[PATCH] CRIS update: new subarchitecture v32

New CRIS sub architecture named v32.

From: Dave Jones <davej@redhat.com>

	Fix swapped kmalloc args

Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

23 files changed, 9028 insertions, 0 deletions

diff --git a/arch/cris/arch-v32/kernel/Makefile b/arch/cris/arch-v32/kernel/Makefile
new file mode 100644
index 00000000000..5d5b613cde8
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/Makefile
@@ -0,0 +1,21 @@
+# $Id: Makefile,v 1.11 2004/12/17 10:16:13 starvik Exp $
+#
+# Makefile for the linux kernel.
+#
+
+extra-y	:= head.o
+
+
+obj-y   := entry.o traps.o irq.o debugport.o dma.o pinmux.o \
+	   process.o ptrace.o setup.o signal.o traps.o time.o \
+	   arbiter.o io.o
+
+obj-$(CONFIG_ETRAXFS_SIM) += vcs_hook.o
+
+obj-$(CONFIG_SMP) += smp.o
+obj-$(CONFIG_ETRAX_KGDB) += kgdb.o kgdb_asm.o
+obj-$(CONFIG_ETRAX_FAST_TIMER) += fasttimer.o
+obj-$(CONFIG_MODULES)    += crisksyms.o
+
+clean:
+
diff --git a/arch/cris/arch-v32/kernel/arbiter.c b/arch/cris/arch-v32/kernel/arbiter.c
new file mode 100644
index 00000000000..3870d2fd516
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/arbiter.c
@@ -0,0 +1,297 @@
+/*
+ * Memory arbiter functions. Allocates bandwith through the
+ * arbiter and sets up arbiter breakpoints.
+ *
+ * The algorithm first assigns slots to the clients that has specified
+ * bandwith (e.g. ethernet) and then the remaining slots are divided
+ * on all the active clients.
+ *
+ * Copyright (c) 2004, 2005 Axis Communications AB.
+ */
+
+#include <linux/config.h>
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/marb_defs.h>
+#include <asm/arch/arbiter.h>
+#include <asm/arch/hwregs/intr_vect.h>
+#include <linux/interrupt.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/spinlock.h>
+#include <asm/io.h>
+
+struct crisv32_watch_entry
+{
+  unsigned long instance;
+  watch_callback* cb;
+  unsigned long start;
+  unsigned long end;
+  int used;
+};
+
+#define NUMBER_OF_BP 4
+#define NBR_OF_CLIENTS 14
+#define NBR_OF_SLOTS 64
+#define SDRAM_BANDWIDTH 100000000 /* Some kind of expected value */
+#define INTMEM_BANDWIDTH 400000000
+#define NBR_OF_REGIONS 2
+
+static struct crisv32_watch_entry watches[NUMBER_OF_BP] =
+{
+  {regi_marb_bp0},
+  {regi_marb_bp1},
+  {regi_marb_bp2},
+  {regi_marb_bp3}
+};
+
+static int requested_slots[NBR_OF_REGIONS][NBR_OF_CLIENTS];
+static int active_clients[NBR_OF_REGIONS][NBR_OF_CLIENTS];
+static int max_bandwidth[NBR_OF_REGIONS] = {SDRAM_BANDWIDTH, INTMEM_BANDWIDTH};
+
+DEFINE_SPINLOCK(arbiter_lock);
+
+static irqreturn_t
+crisv32_arbiter_irq(int irq, void* dev_id, struct pt_regs* regs);
+
+static void crisv32_arbiter_config(int region)
+{
+	int slot;
+	int client;
+	int interval = 0;
+	int val[NBR_OF_SLOTS];
+
+	for (slot = 0; slot < NBR_OF_SLOTS; slot++)
+	    val[slot] = NBR_OF_CLIENTS + 1;
+
+	for (client = 0; client < NBR_OF_CLIENTS; client++)
+	{
+	    int pos;
+	    if (!requested_slots[region][client])
+	       continue;
+	    interval = NBR_OF_SLOTS / requested_slots[region][client];
+	    pos = 0;
+	    while (pos < NBR_OF_SLOTS)
+	    {
+		if (val[pos] != NBR_OF_CLIENTS + 1)
+		   pos++;
+		else
+		{
+			val[pos] = client;
+			pos += interval;
+		}
+	    }
+	}
+
+	client = 0;
+	for (slot = 0; slot < NBR_OF_SLOTS; slot++)
+	{
+		if (val[slot] == NBR_OF_CLIENTS + 1)
+		{
+			int first = client;
+			while(!active_clients[region][client]) {
+				client = (client + 1) % NBR_OF_CLIENTS;
+				if (client == first)
+				   break;
+			}
+			val[slot] = client;
+			client = (client + 1) % NBR_OF_CLIENTS;
+		}
+		if (region == EXT_REGION)
+		   REG_WR_INT_VECT(marb, regi_marb, rw_ext_slots, slot, val[slot]);
+		else if (region == INT_REGION)
+		   REG_WR_INT_VECT(marb, regi_marb, rw_int_slots, slot, val[slot]);
+	}
+}
+
+extern char _stext, _etext;
+
+static void crisv32_arbiter_init(void)
+{
+	static int initialized = 0;
+
+	if (initialized)
+		return;
+
+	initialized = 1;
+
+	/* CPU caches are active. */
+	active_clients[EXT_REGION][10] = active_clients[EXT_REGION][11] = 1;
+        crisv32_arbiter_config(EXT_REGION);
+        crisv32_arbiter_config(INT_REGION);
+
+	if (request_irq(MEMARB_INTR_VECT, crisv32_arbiter_irq, SA_INTERRUPT,
+                        "arbiter", NULL))
+		printk(KERN_ERR "Couldn't allocate arbiter IRQ\n");
+
+#ifndef CONFIG_ETRAX_KGDB
+        /* Global watch for writes to kernel text segment. */
+        crisv32_arbiter_watch(virt_to_phys(&_stext), &_etext - &_stext,
+                              arbiter_all_clients, arbiter_all_write, NULL);
+#endif
+}
+
+
+
+int crisv32_arbiter_allocate_bandwith(int client, int region,
+	                              unsigned long bandwidth)
+{
+	int i;
+	int total_assigned = 0;
+	int total_clients = 0;
+	int req;
+
+	crisv32_arbiter_init();
+
+	for (i = 0; i < NBR_OF_CLIENTS; i++)
+	{
+		total_assigned += requested_slots[region][i];
+		total_clients += active_clients[region][i];
+	}
+	req = NBR_OF_SLOTS / (max_bandwidth[region] / bandwidth);
+
+	if (total_assigned + total_clients + req + 1 > NBR_OF_SLOTS)
+	   return -ENOMEM;
+
+	active_clients[region][client] = 1;
+	requested_slots[region][client] = req;
+	crisv32_arbiter_config(region);
+
+	return 0;
+}
+
+int crisv32_arbiter_watch(unsigned long start, unsigned long size,
+                          unsigned long clients, unsigned long accesses,
+                          watch_callback* cb)
+{
+	int i;
+
+	crisv32_arbiter_init();
+
+	if (start > 0x80000000) {
+		printk("Arbiter: %lX doesn't look like a physical address", start);
+		return -EFAULT;
+	}
+
+	spin_lock(&arbiter_lock);
+
+	for (i = 0; i < NUMBER_OF_BP; i++) {
+		if (!watches[i].used) {
+			reg_marb_rw_intr_mask intr_mask = REG_RD(marb, regi_marb, rw_intr_mask);
+
+			watches[i].used = 1;
+			watches[i].start = start;
+			watches[i].end = start + size;
+			watches[i].cb = cb;
+
+			REG_WR_INT(marb_bp, watches[i].instance, rw_first_addr, watches[i].start);
+			REG_WR_INT(marb_bp, watches[i].instance, rw_last_addr, watches[i].end);
+			REG_WR_INT(marb_bp, watches[i].instance, rw_op, accesses);
+			REG_WR_INT(marb_bp, watches[i].instance, rw_clients, clients);
+
+			if (i == 0)
+				intr_mask.bp0 = regk_marb_yes;
+			else if (i == 1)
+				intr_mask.bp1 = regk_marb_yes;
+			else if (i == 2)
+				intr_mask.bp2 = regk_marb_yes;
+			else if (i == 3)
+				intr_mask.bp3 = regk_marb_yes;
+
+			REG_WR(marb, regi_marb, rw_intr_mask, intr_mask);
+			spin_unlock(&arbiter_lock);
+
+			return i;
+		}
+	}
+	spin_unlock(&arbiter_lock);
+	return -ENOMEM;
+}
+
+int crisv32_arbiter_unwatch(int id)
+{
+	reg_marb_rw_intr_mask intr_mask = REG_RD(marb, regi_marb, rw_intr_mask);
+
+	crisv32_arbiter_init();
+
+	spin_lock(&arbiter_lock);
+
+	if ((id < 0) || (id >= NUMBER_OF_BP) || (!watches[id].used)) {
+		spin_unlock(&arbiter_lock);
+		return -EINVAL;
+	}
+
+	memset(&watches[id], 0, sizeof(struct crisv32_watch_entry));
+
+	if (id == 0)
+		intr_mask.bp0 = regk_marb_no;
+	else if (id == 1)
+		intr_mask.bp2 = regk_marb_no;
+	else if (id == 2)
+		intr_mask.bp2 = regk_marb_no;
+	else if (id == 3)
+		intr_mask.bp3 = regk_marb_no;
+
+	REG_WR(marb, regi_marb, rw_intr_mask, intr_mask);
+
+	spin_unlock(&arbiter_lock);
+	return 0;
+}
+
+extern void show_registers(struct pt_regs *regs);
+
+static irqreturn_t
+crisv32_arbiter_irq(int irq, void* dev_id, struct pt_regs* regs)
+{
+	reg_marb_r_masked_intr masked_intr = REG_RD(marb, regi_marb, r_masked_intr);
+	reg_marb_bp_r_brk_clients r_clients;
+	reg_marb_bp_r_brk_addr r_addr;
+	reg_marb_bp_r_brk_op r_op;
+	reg_marb_bp_r_brk_first_client r_first;
+	reg_marb_bp_r_brk_size r_size;
+	reg_marb_bp_rw_ack ack = {0};
+	reg_marb_rw_ack_intr ack_intr = {.bp0=1,.bp1=1,.bp2=1,.bp3=1};
+	struct crisv32_watch_entry* watch;
+
+	if (masked_intr.bp0) {
+		watch = &watches[0];
+		ack_intr.bp0 = regk_marb_yes;
+	} else if (masked_intr.bp1) {
+		watch = &watches[1];
+		ack_intr.bp1 = regk_marb_yes;
+	} else if (masked_intr.bp2) {
+		watch = &watches[2];
+		ack_intr.bp2 = regk_marb_yes;
+	} else if (masked_intr.bp3) {
+		watch = &watches[3];
+		ack_intr.bp3 = regk_marb_yes;
+	} else {
+		return IRQ_NONE;
+	}
+
+	/* Retrieve all useful information and print it. */
+	r_clients = REG_RD(marb_bp, watch->instance, r_brk_clients);
+	r_addr = REG_RD(marb_bp, watch->instance, r_brk_addr);
+	r_op = REG_RD(marb_bp, watch->instance, r_brk_op);
+	r_first = REG_RD(marb_bp, watch->instance, r_brk_first_client);
+	r_size = REG_RD(marb_bp, watch->instance, r_brk_size);
+
+	printk("Arbiter IRQ\n");
+	printk("Clients %X addr %X op %X first %X size %X\n",
+	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_clients, r_clients),
+	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_addr, r_addr),
+	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_op, r_op),
+	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_first_client, r_first),
+	       REG_TYPE_CONV(int, reg_marb_bp_r_brk_size, r_size));
+
+	REG_WR(marb_bp, watch->instance, rw_ack, ack);
+	REG_WR(marb, regi_marb, rw_ack_intr, ack_intr);
+
+	printk("IRQ occured at %lX\n", regs->erp);
+
+	if (watch->cb)
+		watch->cb();
+
+
+	return IRQ_HANDLED;
+}
diff --git a/arch/cris/arch-v32/kernel/asm-offsets.c b/arch/cris/arch-v32/kernel/asm-offsets.c
new file mode 100644
index 00000000000..15b3d93a049
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/asm-offsets.c
@@ -0,0 +1,49 @@
+#include <linux/sched.h>
+#include <asm/thread_info.h>
+
+/*
+ * Generate definitions needed by assembly language modules.
+ * This code generates raw asm output which is post-processed to extract
+ * and format the required data.
+ */
+
+#define DEFINE(sym, val) \
+        asm volatile("\n->" #sym " %0 " #val : : "i" (val))
+
+#define BLANK() asm volatile("\n->" : : )
+
+int main(void)
+{
+#define ENTRY(entry) DEFINE(PT_ ## entry, offsetof(struct pt_regs, entry))
+	ENTRY(orig_r10);
+	ENTRY(r13);
+	ENTRY(r12);
+	ENTRY(r11);
+        ENTRY(r10);
+        ENTRY(r9);
+	ENTRY(acr);
+	ENTRY(srs);
+        ENTRY(mof);
+        ENTRY(ccs);
+        ENTRY(srp);
+	BLANK();
+#undef ENTRY
+#define ENTRY(entry) DEFINE(TI_ ## entry, offsetof(struct thread_info, entry))
+        ENTRY(task);
+        ENTRY(flags);
+        ENTRY(preempt_count);
+        BLANK();
+#undef ENTRY
+#define ENTRY(entry) DEFINE(THREAD_ ## entry, offsetof(struct thread_struct, entry))
+	ENTRY(ksp);
+        ENTRY(usp);
+        ENTRY(ccs);
+        BLANK();
+#undef ENTRY
+#define ENTRY(entry) DEFINE(TASK_ ## entry, offsetof(struct task_struct, entry))
+        ENTRY(pid);
+        BLANK();
+        DEFINE(LCLONE_VM, CLONE_VM);
+        DEFINE(LCLONE_UNTRACED, CLONE_UNTRACED);
+        return 0;
+}
diff --git a/arch/cris/arch-v32/kernel/crisksyms.c b/arch/cris/arch-v32/kernel/crisksyms.c
new file mode 100644
index 00000000000..2c3bb9a0afe
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/crisksyms.c
@@ -0,0 +1,24 @@
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/irq.h>
+#include <asm/arch/dma.h>
+#include <asm/arch/intmem.h>
+#include <asm/arch/pinmux.h>
+
+/* Functions for allocating DMA channels */
+EXPORT_SYMBOL(crisv32_request_dma);
+EXPORT_SYMBOL(crisv32_free_dma);
+
+/* Functions for handling internal RAM */
+EXPORT_SYMBOL(crisv32_intmem_alloc);
+EXPORT_SYMBOL(crisv32_intmem_free);
+EXPORT_SYMBOL(crisv32_intmem_phys_to_virt);
+EXPORT_SYMBOL(crisv32_intmem_virt_to_phys);
+
+/* Functions for handling pinmux */
+EXPORT_SYMBOL(crisv32_pinmux_alloc);
+EXPORT_SYMBOL(crisv32_pinmux_dealloc);
+
+/* Functions masking/unmasking interrupts */
+EXPORT_SYMBOL(mask_irq);
+EXPORT_SYMBOL(unmask_irq);
diff --git a/arch/cris/arch-v32/kernel/debugport.c b/arch/cris/arch-v32/kernel/debugport.c
new file mode 100644
index 00000000000..ffc1ebf2dfe
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/debugport.c
@@ -0,0 +1,461 @@
+/*
+ * Copyright (C) 2003, Axis Communications AB.
+ */
+
+#include <linux/config.h>
+#include <linux/console.h>
+#include <linux/init.h>
+#include <linux/major.h>
+#include <linux/delay.h>
+#include <linux/tty.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/arch/hwregs/ser_defs.h>
+#include <asm/arch/hwregs/dma_defs.h>
+#include <asm/arch/pinmux.h>
+
+#include <asm/irq.h>
+#include <asm/arch/hwregs/intr_vect_defs.h>
+
+struct dbg_port
+{
+	unsigned char nbr;
+	unsigned long instance;
+	unsigned int started;
+	unsigned long baudrate;
+	unsigned char parity;
+	unsigned int bits;
+};
+
+struct dbg_port ports[] =
+{
+  {
+    0,
+    regi_ser0,
+    0,
+    115200,
+    'N',
+    8
+  },
+  {
+    1,
+    regi_ser1,
+    0,
+    115200,
+    'N',
+    8
+  },
+  {
+    2,
+    regi_ser2,
+    0,
+    115200,
+    'N',
+    8
+  },
+  {
+    3,
+    regi_ser3,
+    0,
+    115200,
+    'N',
+    8
+  }
+};
+static struct dbg_port *port =
+#if defined(CONFIG_ETRAX_DEBUG_PORT0)
+&ports[0];
+#elif defined(CONFIG_ETRAX_DEBUG_PORT1)
+&ports[1];
+#elif defined(CONFIG_ETRAX_DEBUG_PORT2)
+&ports[2];
+#elif defined(CONFIG_ETRAX_DEBUG_PORT3)
+&ports[3];
+#else
+NULL;
+#endif
+
+#ifdef CONFIG_ETRAX_KGDB
+static struct dbg_port *kgdb_port =
+#if defined(CONFIG_ETRAX_KGDB_PORT0)
+&ports[0];
+#elif defined(CONFIG_ETRAX_KGDB_PORT1)
+&ports[1];
+#elif defined(CONFIG_ETRAX_KGDB_PORT2)
+&ports[2];
+#elif defined(CONFIG_ETRAX_KGDB_PORT3)
+&ports[3];
+#else
+NULL;
+#endif
+#endif
+
+#ifdef CONFIG_ETRAXFS_SIM
+extern void print_str( const char *str );
+static char buffer[1024];
+static char msg[] = "Debug: ";
+static int buffer_pos = sizeof(msg) - 1;
+#endif
+
+extern struct tty_driver *serial_driver;
+
+static void
+start_port(struct dbg_port* p)
+{
+	if (!p)
+		return;
+
+	if (p->started)
+		return;
+	p->started = 1;
+
+	if (p->nbr == 1)
+		crisv32_pinmux_alloc_fixed(pinmux_ser1);
+	else if (p->nbr == 2)
+		crisv32_pinmux_alloc_fixed(pinmux_ser2);
+	else if (p->nbr == 3)
+		crisv32_pinmux_alloc_fixed(pinmux_ser3);
+
+	/* Set up serial port registers */
+	reg_ser_rw_tr_ctrl tr_ctrl = {0};
+	reg_ser_rw_tr_dma_en tr_dma_en = {0};
+
+	reg_ser_rw_rec_ctrl rec_ctrl = {0};
+	reg_ser_rw_tr_baud_div tr_baud_div = {0};
+	reg_ser_rw_rec_baud_div rec_baud_div = {0};
+
+	tr_ctrl.base_freq = rec_ctrl.base_freq = regk_ser_f29_493;
+	tr_dma_en.en = rec_ctrl.dma_mode = regk_ser_no;
+	tr_baud_div.div = rec_baud_div.div = 29493000 / p->baudrate / 8;
+	tr_ctrl.en = rec_ctrl.en = 1;
+
+	if (p->parity == 'O')
+	{
+		tr_ctrl.par_en = regk_ser_yes;
+		tr_ctrl.par = regk_ser_odd;
+		rec_ctrl.par_en = regk_ser_yes;
+		rec_ctrl.par = regk_ser_odd;
+	}
+	else if (p->parity == 'E')
+	{
+		tr_ctrl.par_en = regk_ser_yes;
+		tr_ctrl.par = regk_ser_even;
+		rec_ctrl.par_en = regk_ser_yes;
+		rec_ctrl.par = regk_ser_odd;
+	}
+
+	if (p->bits == 7)
+	{
+		tr_ctrl.data_bits = regk_ser_bits7;
+		rec_ctrl.data_bits = regk_ser_bits7;
+	}
+
+	REG_WR (ser, p->instance, rw_tr_baud_div, tr_baud_div);
+	REG_WR (ser, p->instance, rw_rec_baud_div, rec_baud_div);
+	REG_WR (ser, p->instance, rw_tr_dma_en, tr_dma_en);
+	REG_WR (ser, p->instance, rw_tr_ctrl, tr_ctrl);
+	REG_WR (ser, p->instance, rw_rec_ctrl, rec_ctrl);
+}
+
+/* No debug */
+#ifdef CONFIG_ETRAX_DEBUG_PORT_NULL
+
+static void
+console_write(struct console *co, const char *buf, unsigned int len)
+{
+	return;
+}
+
+/* Target debug */
+#elif !defined(CONFIG_ETRAXFS_SIM)
+
+static void
+console_write_direct(struct console *co, const char *buf, unsigned int len)
+{
+	int i;
+	reg_ser_r_stat_din stat;
+	reg_ser_rw_tr_dma_en tr_dma_en, old;
+
+	/* Switch to manual mode */
+	tr_dma_en = old = REG_RD (ser, port->instance, rw_tr_dma_en);
+	if (tr_dma_en.en == regk_ser_yes) {
+		tr_dma_en.en = regk_ser_no;
+		REG_WR(ser, port->instance, rw_tr_dma_en, tr_dma_en);
+	}
+
+	/* Send data */
+	for (i = 0; i < len; i++) {
+		/* LF -> CRLF */
+		if (buf[i] == '\n') {
+			do {
+				stat = REG_RD (ser, port->instance, r_stat_din);
+			} while (!stat.tr_rdy);
+			REG_WR_INT (ser, port->instance, rw_dout, '\r');
+		}
+		/* Wait until transmitter is ready and send.*/
+		do {
+			stat = REG_RD (ser, port->instance, r_stat_din);
+		} while (!stat.tr_rdy);
+		REG_WR_INT (ser, port->instance, rw_dout, buf[i]);
+	}
+
+	/* Restore mode */
+	if (tr_dma_en.en != old.en)
+		REG_WR(ser, port->instance, rw_tr_dma_en, old);
+}
+
+static void
+console_write(struct console *co, const char *buf, unsigned int len)
+{
+	if (!port)
+		return;
+        console_write_direct(co, buf, len);
+}
+
+
+
+#else
+
+/* VCS debug */
+
+static void
+console_write(struct console *co, const char *buf, unsigned int len)
+{
+	char* pos;
+	pos = memchr(buf, '\n', len);
+	if (pos) {
+		int l = ++pos - buf;
+		memcpy(buffer + buffer_pos, buf, l);
+		memcpy(buffer, msg, sizeof(msg) - 1);
+		buffer[buffer_pos + l] = '\0';
+		print_str(buffer);
+		buffer_pos = sizeof(msg) - 1;
+		if (pos - buf != len) {
+			memcpy(buffer + buffer_pos, pos, len - l);
+			buffer_pos += len - l;
+		}
+	} else {
+		memcpy(buffer + buffer_pos, buf, len);
+		buffer_pos += len;
+	}
+}
+
+#endif
+
+int raw_printk(const char *fmt, ...)
+{
+	static char buf[1024];
+	int printed_len;
+	va_list args;
+	va_start(args, fmt);
+	printed_len = vsnprintf(buf, sizeof(buf), fmt, args);
+	va_end(args);
+	console_write(NULL, buf, strlen(buf));
+	return printed_len;
+}
+
+void
+stupid_debug(char* buf)
+{
+  console_write(NULL, buf, strlen(buf));
+}
+
+#ifdef CONFIG_ETRAX_KGDB
+/* Use polling to get a single character from the kernel debug port */
+int
+getDebugChar(void)
+{
+	reg_ser_rs_status_data stat;
+	reg_ser_rw_ack_intr ack_intr = { 0 };
+
+	do {
+		stat = REG_RD(ser, kgdb_instance, rs_status_data);
+	} while (!stat.data_avail);
+
+	/* Ack the data_avail interrupt. */
+	ack_intr.data_avail = 1;
+	REG_WR(ser, kgdb_instance, rw_ack_intr, ack_intr);
+
+	return stat.data;
+}
+
+/* Use polling to put a single character to the kernel debug port */
+void
+putDebugChar(int val)
+{
+	reg_ser_r_status_data stat;
+	do {
+		stat = REG_RD (ser, kgdb_instance, r_status_data);
+	} while (!stat.tr_ready);
+	REG_WR (ser, kgdb_instance, rw_data_out, REG_TYPE_CONV(reg_ser_rw_data_out, int, val));
+}
+#endif /* CONFIG_ETRAX_KGDB */
+
+static int __init
+console_setup(struct console *co, char *options)
+{
+	char* s;
+
+	if (options) {
+		port = &ports[co->index];
+		port->baudrate = 115200;
+		port->parity = 'N';
+		port->bits = 8;
+		port->baudrate = simple_strtoul(options, NULL, 10);
+		s = options;
+		while(*s >= '0' && *s <= '9')
+			s++;
+		if (*s) port->parity = *s++;
+		if (*s) port->bits   = *s++ - '0';
+		port->started = 0;
+		start_port(port);
+	}
+	return 0;
+}
+
+/* This is a dummy serial device that throws away anything written to it.
+ * This is used when no debug output is wanted.
+ */
+static struct tty_driver dummy_driver;
+
+static int dummy_open(struct tty_struct *tty, struct file * filp)
+{
+	return 0;
+}
+
+static void dummy_close(struct tty_struct *tty, struct file * filp)
+{
+}
+
+static int dummy_write(struct tty_struct * tty,
+                       const unsigned char *buf, int count)
+{
+	return count;
+}
+
+static int
+dummy_write_room(struct tty_struct *tty)
+{
+	return 8192;
+}
+
+void __init
+init_dummy_console(void)
+{
+	memset(&dummy_driver, 0, sizeof(struct tty_driver));
+	dummy_driver.driver_name = "serial";
+	dummy_driver.name = "ttyS";
+	dummy_driver.major = TTY_MAJOR;
+	dummy_driver.minor_start = 68;
+	dummy_driver.num = 1;       /* etrax100 has 4 serial ports */
+	dummy_driver.type = TTY_DRIVER_TYPE_SERIAL;
+	dummy_driver.subtype = SERIAL_TYPE_NORMAL;
+	dummy_driver.init_termios = tty_std_termios;
+	dummy_driver.init_termios.c_cflag =
+		B115200 | CS8 | CREAD | HUPCL | CLOCAL; /* is normally B9600 default... */
+	dummy_driver.flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_NO_DEVFS;
+
+	dummy_driver.open = dummy_open;
+	dummy_driver.close = dummy_close;
+	dummy_driver.write = dummy_write;
+	dummy_driver.write_room = dummy_write_room;
+	if (tty_register_driver(&dummy_driver))
+		panic("Couldn't register dummy serial driver\n");
+}
+
+static struct tty_driver*
+crisv32_console_device(struct console* co, int *index)
+{
+	if (port)
+		*index = port->nbr;
+        return port ? serial_driver : &dummy_driver;
+}
+
+static struct console sercons = {
+	name : "ttyS",
+	write: console_write,
+	read : NULL,
+	device : crisv32_console_device,
+	unblank : NULL,
+	setup : console_setup,
+	flags : CON_PRINTBUFFER,
+	index : -1,
+	cflag : 0,
+	next : NULL
+};
+static struct console sercons0 = {
+	name : "ttyS",
+	write: console_write,
+	read : NULL,
+	device : crisv32_console_device,
+	unblank : NULL,
+	setup : console_setup,
+	flags : CON_PRINTBUFFER,
+	index : 0,
+	cflag : 0,
+	next : NULL
+};
+
+static struct console sercons1 = {
+	name : "ttyS",
+	write: console_write,
+	read : NULL,
+	device : crisv32_console_device,
+	unblank : NULL,
+	setup : console_setup,
+	flags : CON_PRINTBUFFER,
+	index : 1,
+	cflag : 0,
+	next : NULL
+};
+static struct console sercons2 = {
+	name : "ttyS",
+	write: console_write,
+	read : NULL,
+	device : crisv32_console_device,
+	unblank : NULL,
+	setup : console_setup,
+	flags : CON_PRINTBUFFER,
+	index : 2,
+	cflag : 0,
+	next : NULL
+};
+static struct console sercons3 = {
+	name : "ttyS",
+	write: console_write,
+	read : NULL,
+	device : crisv32_console_device,
+	unblank : NULL,
+	setup : console_setup,
+	flags : CON_PRINTBUFFER,
+	index : 3,
+	cflag : 0,
+	next : NULL
+};
+
+/* Register console for printk's, etc. */
+int __init
+init_etrax_debug(void)
+{
+  	static int first = 1;
+
+	if (!first) {
+		unregister_console(&sercons);
+		register_console(&sercons0);
+		register_console(&sercons1);
+		register_console(&sercons2);
+		register_console(&sercons3);
+		init_dummy_console();
+		return 0;
+	}
+	first = 0;
+        register_console(&sercons);
+        start_port(port);
+
+#ifdef CONFIG_ETRAX_KGDB
+	start_port(kgdb_port);
+#endif /* CONFIG_ETRAX_KGDB */
+	return 0;
+}
+
+__initcall(init_etrax_debug);
diff --git a/arch/cris/arch-v32/kernel/dma.c b/arch/cris/arch-v32/kernel/dma.c
new file mode 100644
index 00000000000..b92e85799b4
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/dma.c
@@ -0,0 +1,224 @@
+/* Wrapper for DMA channel allocator that starts clocks etc */
+
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <asm/dma.h>
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/marb_defs.h>
+#include <asm/arch/hwregs/config_defs.h>
+#include <asm/arch/hwregs/strmux_defs.h>
+#include <linux/errno.h>
+#include <asm/system.h>
+#include <asm/arch/arbiter.h>
+
+static char used_dma_channels[MAX_DMA_CHANNELS];
+static const char * used_dma_channels_users[MAX_DMA_CHANNELS];
+
+static DEFINE_SPINLOCK(dma_lock);
+
+int crisv32_request_dma(unsigned int dmanr, const char * device_id,
+                        unsigned options, unsigned int bandwidth,
+			enum dma_owner owner)
+{
+	unsigned long flags;
+	reg_config_rw_clk_ctrl clk_ctrl;
+	reg_strmux_rw_cfg strmux_cfg;
+
+        if (crisv32_arbiter_allocate_bandwith(dmanr,
+                                              options & DMA_INT_MEM ? INT_REGION : EXT_REGION,
+                                              bandwidth))
+          return -ENOMEM;
+
+	spin_lock_irqsave(&dma_lock, flags);
+
+	if (used_dma_channels[dmanr]) {
+		spin_unlock_irqrestore(&dma_lock, flags);
+		if (options & DMA_VERBOSE_ON_ERROR) {
+			printk("Failed to request DMA %i for %s, already allocated by %s\n", dmanr, device_id, used_dma_channels_users[dmanr]);
+		}
+		if (options & DMA_PANIC_ON_ERROR)
+			panic("request_dma error!");
+		return -EBUSY;
+	}
+	clk_ctrl = REG_RD(config, regi_config, rw_clk_ctrl);
+	strmux_cfg = REG_RD(strmux, regi_strmux, rw_cfg);
+
+	switch(dmanr)
+	{
+	case 0:
+	case 1:
+		clk_ctrl.dma01_eth0 = 1;
+		break;
+	case 2:
+	case 3:
+		clk_ctrl.dma23 = 1;
+		break;
+	case 4:
+	case 5:
+		clk_ctrl.dma45 = 1;
+		break;
+	case 6:
+	case 7:
+		clk_ctrl.dma67 = 1;
+		break;
+	case 8:
+	case 9:
+		clk_ctrl.dma89_strcop = 1;
+		break;
+#if MAX_DMA_CHANNELS-1 != 9
+#error Check dma.c
+#endif
+	default:
+		spin_unlock_irqrestore(&dma_lock, flags);
+		if (options & DMA_VERBOSE_ON_ERROR) {
+			printk("Failed to request DMA %i for %s, only 0-%i valid)\n", dmanr, device_id, MAX_DMA_CHANNELS-1);
+		}
+
+		if (options & DMA_PANIC_ON_ERROR)
+			panic("request_dma error!");
+		return -EINVAL;
+	}
+
+	switch(owner)
+	{
+	case dma_eth0:
+		if (dmanr == 0)
+			strmux_cfg.dma0 = regk_strmux_eth0;
+		else if (dmanr == 1)
+			strmux_cfg.dma1 = regk_strmux_eth0;
+		else
+			panic("Invalid DMA channel for eth0\n");
+		break;
+	case dma_eth1:
+		if (dmanr == 6)
+			strmux_cfg.dma6 = regk_strmux_eth1;
+		else if (dmanr == 7)
+			strmux_cfg.dma7 = regk_strmux_eth1;
+		else
+			panic("Invalid DMA channel for eth1\n");
+		break;
+	case dma_iop0:
+		if (dmanr == 2)
+			strmux_cfg.dma2 = regk_strmux_iop0;
+		else if (dmanr == 3)
+			strmux_cfg.dma3 = regk_strmux_iop0;
+		else
+			panic("Invalid DMA channel for iop0\n");
+		break;
+	case dma_iop1:
+		if (dmanr == 4)
+			strmux_cfg.dma4 = regk_strmux_iop1;
+		else if (dmanr == 5)
+			strmux_cfg.dma5 = regk_strmux_iop1;
+		else
+			panic("Invalid DMA channel for iop1\n");
+		break;
+	case dma_ser0:
+		if (dmanr == 6)
+			strmux_cfg.dma6 = regk_strmux_ser0;
+		else if (dmanr == 7)
+			strmux_cfg.dma7 = regk_strmux_ser0;
+		else
+			panic("Invalid DMA channel for ser0\n");
+		break;
+	case dma_ser1:
+		if (dmanr == 4)
+			strmux_cfg.dma4 = regk_strmux_ser1;
+		else if (dmanr == 5)
+			strmux_cfg.dma5 = regk_strmux_ser1;
+		else
+			panic("Invalid DMA channel for ser1\n");
+		break;
+	case dma_ser2:
+		if (dmanr == 2)
+			strmux_cfg.dma2 = regk_strmux_ser2;
+		else if (dmanr == 3)
+			strmux_cfg.dma3 = regk_strmux_ser2;
+		else
+			panic("Invalid DMA channel for ser2\n");
+		break;
+	case dma_ser3:
+		if (dmanr == 8)
+			strmux_cfg.dma8 = regk_strmux_ser3;
+		else if (dmanr == 9)
+			strmux_cfg.dma9 = regk_strmux_ser3;
+		else
+			panic("Invalid DMA channel for ser3\n");
+		break;
+	case dma_sser0:
+		if (dmanr == 4)
+			strmux_cfg.dma4 = regk_strmux_sser0;
+		else if (dmanr == 5)
+			strmux_cfg.dma5 = regk_strmux_sser0;
+		else
+			panic("Invalid DMA channel for sser0\n");
+		break;
+	case dma_sser1:
+		if (dmanr == 6)
+			strmux_cfg.dma6 = regk_strmux_sser1;
+		else if (dmanr == 7)
+			strmux_cfg.dma7 = regk_strmux_sser1;
+		else
+			panic("Invalid DMA channel for sser1\n");
+		break;
+	case dma_ata:
+		if (dmanr == 2)
+			strmux_cfg.dma2 = regk_strmux_ata;
+		else if (dmanr == 3)
+			strmux_cfg.dma3 = regk_strmux_ata;
+		else
+			panic("Invalid DMA channel for ata\n");
+		break;
+	case dma_strp:
+		if (dmanr == 8)
+			strmux_cfg.dma8 = regk_strmux_strcop;
+		else if (dmanr == 9)
+			strmux_cfg.dma9 = regk_strmux_strcop;
+		else
+			panic("Invalid DMA channel for strp\n");
+		break;
+	case dma_ext0:
+		if (dmanr == 6)
+			strmux_cfg.dma6 = regk_strmux_ext0;
+		else
+			panic("Invalid DMA channel for ext0\n");
+		break;
+	case dma_ext1:
+		if (dmanr == 7)
+			strmux_cfg.dma7 = regk_strmux_ext1;
+		else
+			panic("Invalid DMA channel for ext1\n");
+		break;
+	case dma_ext2:
+		if (dmanr == 2)
+			strmux_cfg.dma2 = regk_strmux_ext2;
+		else if (dmanr == 8)
+			strmux_cfg.dma8 = regk_strmux_ext2;
+		else
+			panic("Invalid DMA channel for ext2\n");
+		break;
+	case dma_ext3:
+		if (dmanr == 3)
+			strmux_cfg.dma3 = regk_strmux_ext3;
+		else if (dmanr == 9)
+			strmux_cfg.dma9 = regk_strmux_ext2;
+		else
+			panic("Invalid DMA channel for ext2\n");
+		break;
+	}
+
+	used_dma_channels[dmanr] = 1;
+	used_dma_channels_users[dmanr] = device_id;
+	REG_WR(config, regi_config, rw_clk_ctrl, clk_ctrl);
+	REG_WR(strmux, regi_strmux, rw_cfg, strmux_cfg);
+	spin_unlock_irqrestore(&dma_lock,flags);
+	return 0;
+}
+
+void crisv32_free_dma(unsigned int dmanr)
+{
+	spin_lock(&dma_lock);
+	used_dma_channels[dmanr] = 0;
+	spin_unlock(&dma_lock);
+}
diff --git a/arch/cris/arch-v32/kernel/entry.S b/arch/cris/arch-v32/kernel/entry.S
new file mode 100644
index 00000000000..a8ed55e5b40
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/entry.S
@@ -0,0 +1,820 @@
+/*
+ *  Copyright (C) 2000-2003 Axis Communications AB
+ *
+ *  Authors:	Bjorn Wesen (bjornw@axis.com)
+ *              Tobias Anderberg (tobiasa@axis.com), CRISv32 port.
+ *
+ * Code for the system-call and fault low-level handling routines.
+ *
+ * NOTE: This code handles signal-recognition, which happens every time
+ * after a timer-interrupt and after each system call.
+ *
+ * Stack layout in 'ret_from_system_call':
+ * 	ptrace needs to have all regs on the stack.
+ *	if the order here is changed, it needs to be
+ *	updated in fork.c:copy_process, signal.c:do_signal,
+ *	ptrace.c and ptrace.h
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/linkage.h>
+#include <linux/sys.h>
+#include <asm/unistd.h>
+#include <asm/errno.h>
+#include <asm/thread_info.h>
+#include <asm/arch/offset.h>
+
+#include <asm/arch/hwregs/asm/reg_map_asm.h>
+#include <asm/arch/hwregs/asm/intr_vect_defs_asm.h>
+
+	;; Exported functions.
+	.globl system_call
+	.globl ret_from_intr
+	.globl ret_from_fork
+	.globl resume
+	.globl multiple_interrupt
+	.globl nmi_interrupt
+	.globl spurious_interrupt
+	.globl do_sigtrap
+	.globl gdb_handle_exception
+	.globl sys_call_table
+
+	; Check if preemptive kernel scheduling should be done.
+#ifdef CONFIG_PREEMPT
+_resume_kernel:
+	di
+	; Load current task struct.
+	movs.w	-8192, $r0		; THREAD_SIZE = 8192
+	and.d	$sp, $r0
+
+	addoq	+TI_preempt_count, $r0, $acr
+	move.d	[$acr], $r10		; Preemption disabled?
+	bne	_Rexit
+	nop
+
+_need_resched:
+	addoq	+TI_flags, $r0, $acr
+	move.d	[$acr], $r10
+	btstq	TIF_NEED_RESCHED, $r10	; Check if need_resched is set.
+	bpl	_Rexit
+	nop
+
+	; Do preemptive kernel scheduling.
+	jsr	preempt_schedule_irq
+	nop
+
+	; Load new task struct.
+	movs.w	-8192, $r0		; THREAD_SIZE = 8192.
+	and.d	$sp, $r0
+
+	; One more time with new task.
+	ba	_need_resched
+	nop
+#else
+#define _resume_kernel _Rexit
+#endif
+
+	; Called at exit from fork. schedule_tail must be called to drop
+	; spinlock if CONFIG_PREEMPT.
+ret_from_fork:
+	jsr schedule_tail
+	nop
+	ba  ret_from_sys_call
+	nop
+
+ret_from_intr:
+	;; Check for resched if preemptive kernel, or if we're going back to
+	;; user-mode. This test matches the user_regs(regs) macro. Don't simply
+	;; test CCS since that doesn't necessarily reflect what mode we'll
+	;; return into.
+	addoq	+PT_ccs, $sp, $acr
+	move.d	[$acr], $r0
+	btstq	16, $r0			; User-mode flag.
+	bpl	_resume_kernel
+
+	; Note that di below is in delay slot.
+
+_resume_userspace:
+	di			; So need_resched and sigpending don't change.
+
+	movs.w	-8192, $r0		; THREAD_SIZE == 8192
+	and.d	$sp, $r0
+
+	addoq	+TI_flags, $r0, $acr	; current->work
+	move.d	[$acr], $r10
+	and.d	_TIF_WORK_MASK, $r10	; Work to be done on return?
+	bne	_work_pending
+	nop
+	ba	_Rexit
+	nop
+
+	;; The system_call is called by a BREAK instruction, which looks pretty
+	;; much like any other exception.
+	;;
+	;; System calls can't be made from interrupts but we still stack ERP
+	;; to have a complete stack frame.
+	;;
+	;; In r9 we have the wanted syscall number. Arguments come in r10,r11,r12,
+	;; r13,mof,srp
+	;;
+	;; This function looks on the _surface_ like spaghetti programming, but it's
+	;; really designed so that the fast-path does not force cache-loading of
+	;; non-used instructions. Only the non-common cases cause the outlined code
+	;; to run..
+
+system_call:
+	;; Stack-frame similar to the irq heads, which is reversed in
+	;; ret_from_sys_call.
+	subq	12, $sp		; Skip EXS, EDA.
+	move	$erp, [$sp]
+	subq	4, $sp
+	move	$srp, [$sp]
+	subq	4, $sp
+	move	$ccs, [$sp]
+	subq	4, $sp
+	ei			; Allow IRQs while handling system call
+	move	$spc, [$sp]
+	subq	4, $sp
+	move	$mof, [$sp]
+	subq	4, $sp
+	move	$srs, [$sp]
+	subq	4, $sp
+	move.d	$acr, [$sp]
+	subq	14*4, $sp	; Make room for R0-R13.
+	movem	$r13, [$sp]	; Push R0-R13
+	subq	4, $sp
+	move.d	$r10, [$sp]	; Push orig_r10.
+
+; Set S-bit when kernel debugging to keep hardware breakpoints active.
+#ifdef CONFIG_ETRAX_KGDB
+	move $ccs, $r0
+	or.d (1<<9), $r0
+	move $r0, $ccs
+#endif
+
+	movs.w	-ENOSYS, $r0
+	addoq	+PT_r10, $sp, $acr
+	move.d	$r0, [$acr]
+
+	;; Check if this process is syscall-traced.
+	movs.w	-8192, $r0	; THREAD_SIZE == 8192
+	and.d	$sp, $r0
+
+	addoq	+TI_flags, $r0, $acr
+	move.d	[$acr], $r0
+	btstq	TIF_SYSCALL_TRACE, $r0
+	bmi	_syscall_trace_entry
+	nop
+
+_syscall_traced:
+	;; Check for sanity in the requested syscall number.
+	cmpu.w	NR_syscalls, $r9
+	bhs	ret_from_sys_call
+	lslq	2, $r9		;  Multiply by 4, in the delay slot.
+
+	;; The location on the stack for the register structure is passed as a
+	;; seventh argument. Some system calls need this.
+	move.d  $sp, $r0
+	subq	4, $sp
+	move.d	$r0, [$sp]
+
+	;; The registers carrying parameters (R10-R13) are intact. The optional
+	;; fifth and sixth parameters is in MOF and SRP respectivly. Put them
+	;; back on the stack.
+	subq	4, $sp
+	move	$srp, [$sp]
+	subq	4, $sp
+	move	$mof, [$sp]
+
+	;; Actually to the system call.
+	addo.d	+sys_call_table, $r9, $acr
+	move.d	[$acr], $acr
+	jsr	$acr
+	nop
+
+	addq	3*4, $sp		; Pop the mof, srp and regs parameters.
+	addoq	+PT_r10, $sp, $acr
+	move.d	$r10, [$acr]		; Save the return value.
+
+	moveq	1, $r9			; "Parameter" to ret_from_sys_call to
+					; show it was a sys call.
+
+	;; Fall through into ret_from_sys_call to return.
+
+ret_from_sys_call:
+	;; R9 is a parameter:
+	;;  >= 1 from syscall
+	;;     0 from irq
+
+	;; Get the current task-struct pointer.
+	movs.w	-8192, $r0	; THREAD_SIZE == 8192
+	and.d	$sp, $r0
+
+	di		; Make sure need_resched and sigpending don't change.
+
+	addoq	+TI_flags, $r0, $acr
+	move.d	[$acr], $r1
+	and.d	_TIF_ALLWORK_MASK, $r1
+	bne	_syscall_exit_work
+	nop
+
+_Rexit:
+	;; This epilogue MUST match the prologues in multiple_interrupt, irq.h
+	;; and ptregs.h.
+	addq	4, $sp		; Skip orig_r10.
+	movem	[$sp+], $r13	; Registers R0-R13.
+	move.d	[$sp+], $acr
+	move	[$sp], $srs
+	addq	4, $sp
+	move	[$sp+], $mof
+	move	[$sp+], $spc
+	move	[$sp+], $ccs
+	move	[$sp+], $srp
+	move	[$sp+], $erp
+	addq    8, $sp		; Skip EXS, EDA.
+	jump	$erp
+	rfe			; Restore condition code stack in delay-slot.
+
+	;; We get here after doing a syscall if extra work might need to be done
+	;; perform syscall exit tracing if needed.
+
+_syscall_exit_work:
+	;; R0 contains current at this point and irq's are disabled.
+
+	addoq	+TI_flags, $r0, $acr
+	move.d	[$acr], $r1
+	btstq	TIF_SYSCALL_TRACE, $r1
+	bpl	_work_pending
+	nop
+	ei
+	move.d	$r9, $r1		; Preserve R9.
+	jsr	do_syscall_trace
+	nop
+	move.d	$r1, $r9
+	ba	_resume_userspace
+	nop
+
+_work_pending:
+	addoq	+TI_flags, $r0, $acr
+	move.d	[$acr], $r10
+	btstq	TIF_NEED_RESCHED, $r10	; Need resched?
+	bpl	_work_notifysig		; No, must be signal/notify.
+	nop
+
+_work_resched:
+	move.d	$r9, $r1		; Preserve R9.
+	jsr	schedule
+	nop
+	move.d	$r1, $r9
+	di
+
+	addoq	+TI_flags, $r0, $acr
+	move.d	[$acr], $r1
+	and.d	_TIF_WORK_MASK, $r1	; Ignore sycall trace counter.
+	beq	_Rexit
+	nop
+	btstq	TIF_NEED_RESCHED, $r1
+	bmi	_work_resched		; current->work.need_resched.
+	nop
+
+_work_notifysig:
+	;; Deal with pending signals and notify-resume requests.
+
+	addoq	+TI_flags, $r0, $acr
+	move.d	[$acr], $r13		; The thread_info_flags parameter.
+	move.d	$r9, $r10		; do_notify_resume syscall/irq param.
+	moveq	0, $r11			; oldset param - 0 in this case.
+	move.d	$sp, $r12		; The regs param.
+	jsr	do_notify_resume
+	nop
+
+	ba _Rexit
+	nop
+
+	;; We get here as a sidetrack when we've entered a syscall with the
+	;; trace-bit set. We need to call do_syscall_trace and then continue
+	;; with the call.
+
+_syscall_trace_entry:
+	;; PT_r10 in the frame contains -ENOSYS as required, at this point.
+
+	jsr	do_syscall_trace
+	nop
+
+	;; Now re-enter the syscall code to do the syscall itself. We need to
+	;; restore R9 here to contain the wanted syscall, and the other
+	;; parameter-bearing registers.
+	addoq	+PT_r9, $sp, $acr
+	move.d	[$acr], $r9
+	addoq	+PT_orig_r10, $sp, $acr
+	move.d	[$acr], $r10		; PT_r10 is already -ENOSYS.
+	addoq	+PT_r11, $sp, $acr
+	move.d	[$acr], $r11
+	addoq	+PT_r12, $sp, $acr
+	move.d	[$acr], $r12
+	addoq	+PT_r13, $sp, $acr
+	move.d	[$acr], $r13
+	addoq	+PT_mof, $sp, $acr
+	move	[$acr], $mof
+	addoq	+PT_srp, $sp, $acr
+	move	[$acr], $srp
+
+	ba	_syscall_traced
+	nop
+
+	;; Resume performs the actual task-switching, by switching stack
+	;; pointers. Input arguments are:
+	;;
+	;; R10 = prev
+	;; R11 = next
+	;; R12 = thread offset in task struct.
+	;;
+	;; Returns old current in R10.
+
+resume:
+	subq	4, $sp
+	move	$srp, [$sp]		; Keep old/new PC on the stack.
+	add.d	$r12, $r10		; R10 = current tasks tss.
+	addoq	+THREAD_ccs, $r10, $acr
+	move	$ccs, [$acr]		; Save IRQ enable state.
+	di
+
+	addoq	+THREAD_usp, $r10, $acr
+	move	$usp, [$acr]		; Save user-mode stackpointer.
+
+	;; See copy_thread for the reason why register R9 is saved.
+	subq	10*4, $sp
+	movem	$r9, [$sp]		; Save non-scratch registers and R9.
+
+	addoq	+THREAD_ksp, $r10, $acr
+	move.d	$sp, [$acr]		; Save kernel SP for old task.
+
+	move.d	$sp, $r10		; Return last running task in R10.
+	and.d   -8192, $r10		; Get thread_info from stackpointer.
+	addoq	+TI_task, $r10, $acr
+	move.d	[$acr], $r10		; Get task.
+	add.d	$r12, $r11		; Find the new tasks tss.
+	addoq	+THREAD_ksp, $r11, $acr
+	move.d	[$acr], $sp		; Switch to new stackframe.
+	movem	[$sp+], $r9		; Restore non-scratch registers and R9.
+
+	addoq	+THREAD_usp, $r11, $acr
+	move	[$acr], $usp		; Restore user-mode stackpointer.
+
+	addoq	+THREAD_ccs, $r11, $acr
+	move	[$acr], $ccs		; Restore IRQ enable status.
+	move.d	[$sp+], $acr
+	jump	$acr			; Restore PC.
+	nop
+
+nmi_interrupt:
+
+;; If we receive a watchdog interrupt while it is not expected, then set
+;; up a canonical frame and dump register contents before dying.
+
+	;; This prologue MUST match the one in irq.h and the struct in ptregs.h!
+	subq	12, $sp		;  Skip EXS, EDA.
+	move	$nrp, [$sp]
+	subq	4, $sp
+	move	$srp, [$sp]
+	subq	4, $sp
+	move	$ccs, [$sp]
+	subq	4, $sp
+	move	$spc, [$sp]
+	subq	4, $sp
+	move	$mof, [$sp]
+	subq	4, $sp
+	move	$srs, [$sp]
+	subq	4, $sp
+	move.d	$acr, [$sp]
+	subq	14*4, $sp		; Make room for R0-R13.
+	movem	$r13, [$sp]		; Push R0-R13.
+	subq	4, $sp
+	move.d	$r10, [$sp]		; Push orig_r10.
+	move.d  REG_ADDR(intr_vect, regi_irq, r_nmi), $r0
+	move.d  [$r0], $r0
+	btstq	REG_BIT(intr_vect, r_nmi, watchdog), $r0
+	bpl     1f
+	nop
+	jsr 	handle_watchdog_bite	; In time.c.
+        move.d	$sp, $r10		; Pointer to registers
+1:	btstq	REG_BIT(intr_vect, r_nmi, ext), $r0
+	bpl     1f
+	nop
+	jsr	handle_nmi
+	move.d	$sp, $r10		; Pointer to registers
+1:	addq    4, $sp			; Skip orig_r10
+	movem   [$sp+], $r13
+	move.d  [$sp+], $acr
+	move    [$sp], $srs
+	addq    4, $sp
+	move    [$sp+], $mof
+	move    [$sp+], $spc
+	move    [$sp+], $ccs
+	move	[$sp+], $srp
+	move	[$sp+], $nrp
+	addq    8, $sp			; Skip EXS, EDA.
+	jump    $nrp
+	rfn
+
+	.comm	cause_of_death, 4	;; Don't declare this anywhere.
+
+spurious_interrupt:
+	di
+	jump hard_reset_now
+	nop
+
+	;; This handles the case when multiple interrupts arrive at the same
+	;; time. Jump to the first set interrupt bit in a priotiry fashion. The
+	;; hardware will call the unserved interrupts after the handler
+	;; finishes.
+multiple_interrupt:
+	;; This prologue MUST match the one in irq.h and the struct in ptregs.h!
+	subq	12, $sp		; Skip EXS, EDA.
+	move	$erp, [$sp]
+	subq	4, $sp
+	move	$srp, [$sp]
+	subq	4, $sp
+	move	$ccs, [$sp]
+	subq	4, $sp
+	move	$spc, [$sp]
+	subq	4, $sp
+	move	$mof, [$sp]
+	subq	4, $sp
+	move	$srs, [$sp]
+	subq	4, $sp
+	move.d	$acr, [$sp]
+	subq	14*4, $sp	; Make room for R0-R13.
+	movem	$r13, [$sp]	; Push R0-R13.
+	subq	4, $sp
+	move.d	$r10, [$sp]	; Push orig_r10.
+
+; Set S-bit when kernel debugging to keep hardware breakpoints active.
+#ifdef CONFIG_ETRAX_KGDB
+	move $ccs, $r0
+	or.d (1<<9), $r0
+	move $r0, $ccs
+#endif
+
+	jsr	crisv32_do_multiple
+	move.d	$sp, $r10
+	jump    ret_from_intr
+	nop
+
+do_sigtrap:
+	;; Sigtraps the process that executed the BREAK instruction. Creates a
+	;; frame that Rexit expects.
+	subq	4, $sp
+	move    $eda, [$sp]
+	subq    4, $sp
+	move    $exs, [$sp]
+	subq    4, $sp
+	move	$erp, [$sp]
+	subq	4, $sp
+	move	$srp, [$sp]
+	subq	4, $sp
+	move	$ccs, [$sp]
+	subq	4, $sp
+	move	$spc, [$sp]
+	subq	4, $sp
+	move	$mof, [$sp]
+	subq	4, $sp
+	move	$srs, [$sp]
+	subq	4, $sp
+	move.d	$acr, [$sp]
+	di				; Need to disable irq's at this point.
+	subq	14*4, $sp		; Make room for r0-r13.
+	movem	$r13, [$sp]		; Push the r0-r13 registers.
+	subq	4, $sp
+	move.d	$r10, [$sp]		; Push orig_r10.
+
+	movs.w	-8192, $r9		; THREAD_SIZE == 8192
+	and.d	$sp, $r9
+
+	;; thread_info as first parameter
+	move.d  $r9, $r10
+	moveq	5, $r11			; SIGTRAP as second argument.
+	jsr	ugdb_trap_user
+	nop
+	jump	ret_from_intr		; Use the return routine for interrupts.
+	nop
+
+gdb_handle_exception:
+	subq	4, $sp
+	move.d	$r0, [$sp]
+#ifdef CONFIG_ETRAX_KGDB
+	move	$ccs, $r0		; U-flag not affected by previous insns.
+	btstq	16, $r0			; Test the U-flag.
+	bmi	_ugdb_handle_exception	; Go to user mode debugging.
+	nop				; Empty delay-slot (cannot pop R0 here).
+	ba	kgdb_handle_exception	; Go to kernel debugging.
+	move.d	[$sp+], $r0		; Restore R0 in delay slot.
+#endif
+
+_ugdb_handle_exception:
+	ba	do_sigtrap		; SIGTRAP the offending process.
+	move.d	[$sp+], $r0		; Restore R0 in delay slot.
+
+	.data
+
+	.section .rodata,"a"
+sys_call_table:
+	.long sys_restart_syscall	; 0 - old "setup()" system call, used
+					; for restarting.
+	.long sys_exit
+	.long sys_fork
+	.long sys_read
+	.long sys_write
+	.long sys_open		/* 5 */
+	.long sys_close
+	.long sys_waitpid
+	.long sys_creat
+	.long sys_link
+	.long sys_unlink	/* 10 */
+	.long sys_execve
+	.long sys_chdir
+	.long sys_time
+	.long sys_mknod
+	.long sys_chmod		/* 15 */
+	.long sys_lchown16
+	.long sys_ni_syscall	/* old break syscall holder */
+	.long sys_stat
+	.long sys_lseek
+	.long sys_getpid	/* 20 */
+	.long sys_mount
+	.long sys_oldumount
+	.long sys_setuid16
+	.long sys_getuid16
+	.long sys_stime		/* 25 */
+	.long sys_ptrace
+	.long sys_alarm
+	.long sys_fstat
+	.long sys_pause
+	.long sys_utime		/* 30 */
+	.long sys_ni_syscall	/* old stty syscall holder */
+	.long sys_ni_syscall	/* old gtty syscall holder */
+	.long sys_access
+	.long sys_nice
+	.long sys_ni_syscall	/* 35  old ftime syscall holder */
+	.long sys_sync
+	.long sys_kill
+	.long sys_rename
+	.long sys_mkdir
+	.long sys_rmdir		/* 40 */
+	.long sys_dup
+	.long sys_pipe
+	.long sys_times
+	.long sys_ni_syscall	/* old prof syscall holder */
+	.long sys_brk		/* 45 */
+	.long sys_setgid16
+	.long sys_getgid16
+	.long sys_signal
+	.long sys_geteuid16
+	.long sys_getegid16	/* 50 */
+	.long sys_acct
+	.long sys_umount	/* recycled never used phys( */
+	.long sys_ni_syscall	/* old lock syscall holder */
+	.long sys_ioctl
+	.long sys_fcntl		/* 55 */
+	.long sys_ni_syscall	/* old mpx syscall holder */
+	.long sys_setpgid
+	.long sys_ni_syscall	/* old ulimit syscall holder */
+	.long sys_ni_syscall	/* old sys_olduname holder */
+	.long sys_umask		/* 60 */
+	.long sys_chroot
+	.long sys_ustat
+	.long sys_dup2
+	.long sys_getppid
+	.long sys_getpgrp	/* 65 */
+	.long sys_setsid
+	.long sys_sigaction
+	.long sys_sgetmask
+	.long sys_ssetmask
+	.long sys_setreuid16	/* 70 */
+	.long sys_setregid16
+	.long sys_sigsuspend
+	.long sys_sigpending
+	.long sys_sethostname
+	.long sys_setrlimit	/* 75 */
+	.long sys_old_getrlimit
+	.long sys_getrusage
+	.long sys_gettimeofday
+	.long sys_settimeofday
+	.long sys_getgroups16	/* 80 */
+	.long sys_setgroups16
+	.long sys_select	/* was old_select in Linux/E100 */
+	.long sys_symlink
+	.long sys_lstat
+	.long sys_readlink	/* 85 */
+	.long sys_uselib
+	.long sys_swapon
+	.long sys_reboot
+	.long old_readdir
+	.long old_mmap		/* 90 */
+	.long sys_munmap
+	.long sys_truncate
+	.long sys_ftruncate
+	.long sys_fchmod
+	.long sys_fchown16	/* 95 */
+	.long sys_getpriority
+	.long sys_setpriority
+	.long sys_ni_syscall	/* old profil syscall holder */
+	.long sys_statfs
+	.long sys_fstatfs	/* 100 */
+	.long sys_ni_syscall	/* sys_ioperm in i386 */
+	.long sys_socketcall
+	.long sys_syslog
+	.long sys_setitimer
+	.long sys_getitimer	/* 105 */
+	.long sys_newstat
+	.long sys_newlstat
+	.long sys_newfstat
+	.long sys_ni_syscall	/* old sys_uname holder */
+	.long sys_ni_syscall	/* sys_iopl in i386 */
+	.long sys_vhangup
+	.long sys_ni_syscall	/* old "idle" system call */
+	.long sys_ni_syscall	/* vm86old in i386 */
+	.long sys_wait4
+	.long sys_swapoff	/* 115 */
+	.long sys_sysinfo
+	.long sys_ipc
+	.long sys_fsync
+	.long sys_sigreturn
+	.long sys_clone		/* 120 */
+	.long sys_setdomainname
+	.long sys_newuname
+	.long sys_ni_syscall	/* sys_modify_ldt */
+	.long sys_adjtimex
+	.long sys_mprotect	/* 125 */
+	.long sys_sigprocmask
+	.long sys_ni_syscall	/* old "create_module" */
+	.long sys_init_module
+	.long sys_delete_module
+	.long sys_ni_syscall	/* 130:	old "get_kernel_syms" */
+	.long sys_quotactl
+	.long sys_getpgid
+	.long sys_fchdir
+	.long sys_bdflush
+	.long sys_sysfs		/* 135 */
+	.long sys_personality
+	.long sys_ni_syscall	/* for afs_syscall */
+	.long sys_setfsuid16
+	.long sys_setfsgid16
+	.long sys_llseek	/* 140 */
+	.long sys_getdents
+	.long sys_select
+	.long sys_flock
+	.long sys_msync
+	.long sys_readv		/* 145 */
+	.long sys_writev
+	.long sys_getsid
+	.long sys_fdatasync
+	.long sys_sysctl
+	.long sys_mlock		/* 150 */
+	.long sys_munlock
+	.long sys_mlockall
+	.long sys_munlockall
+	.long sys_sched_setparam
+	.long sys_sched_getparam	/* 155 */
+	.long sys_sched_setscheduler
+	.long sys_sched_getscheduler
+	.long sys_sched_yield
+	.long sys_sched_get_priority_max
+	.long sys_sched_get_priority_min	/* 160 */
+	.long sys_sched_rr_get_interval
+	.long sys_nanosleep
+	.long sys_mremap
+	.long sys_setresuid16
+	.long sys_getresuid16	/* 165 */
+	.long sys_ni_syscall	/* sys_vm86 */
+	.long sys_ni_syscall	/* Old sys_query_module */
+	.long sys_poll
+	.long sys_nfsservctl
+	.long sys_setresgid16	/* 170 */
+	.long sys_getresgid16
+	.long sys_prctl
+	.long sys_rt_sigreturn
+	.long sys_rt_sigaction
+	.long sys_rt_sigprocmask	/* 175 */
+	.long sys_rt_sigpending
+	.long sys_rt_sigtimedwait
+	.long sys_rt_sigqueueinfo
+	.long sys_rt_sigsuspend
+	.long sys_pread64	/* 180 */
+	.long sys_pwrite64
+	.long sys_chown16
+	.long sys_getcwd
+	.long sys_capget
+	.long sys_capset	/* 185 */
+	.long sys_sigaltstack
+	.long sys_sendfile
+	.long sys_ni_syscall	/* streams1 */
+	.long sys_ni_syscall	/* streams2 */
+	.long sys_vfork		/* 190 */
+	.long sys_getrlimit
+	.long sys_mmap2
+	.long sys_truncate64
+	.long sys_ftruncate64
+	.long sys_stat64	/* 195 */
+	.long sys_lstat64
+	.long sys_fstat64
+	.long sys_lchown
+	.long sys_getuid
+	.long sys_getgid	/* 200 */
+	.long sys_geteuid
+	.long sys_getegid
+	.long sys_setreuid
+	.long sys_setregid
+	.long sys_getgroups	/* 205 */
+	.long sys_setgroups
+	.long sys_fchown
+	.long sys_setresuid
+	.long sys_getresuid
+	.long sys_setresgid	/* 210 */
+	.long sys_getresgid
+	.long sys_chown
+	.long sys_setuid
+	.long sys_setgid
+	.long sys_setfsuid	/* 215 */
+	.long sys_setfsgid
+	.long sys_pivot_root
+	.long sys_mincore
+	.long sys_madvise
+	.long sys_getdents64	/* 220 */
+	.long sys_fcntl64
+	.long sys_ni_syscall	/* reserved for TUX */
+	.long sys_ni_syscall
+	.long sys_gettid
+	.long sys_readahead	/* 225 */
+	.long sys_setxattr
+	.long sys_lsetxattr
+	.long sys_fsetxattr
+	.long sys_getxattr
+	.long sys_lgetxattr	/* 230 */
+	.long sys_fgetxattr
+	.long sys_listxattr
+	.long sys_llistxattr
+	.long sys_flistxattr
+	.long sys_removexattr	/* 235 */
+	.long sys_lremovexattr
+	.long sys_fremovexattr
+	.long sys_tkill
+	.long sys_sendfile64
+	.long sys_futex		/* 240 */
+	.long sys_sched_setaffinity
+	.long sys_sched_getaffinity
+	.long sys_ni_syscall	/* sys_set_thread_area */
+	.long sys_ni_syscall	/* sys_get_thread_area */
+	.long sys_io_setup	/* 245 */
+	.long sys_io_destroy
+	.long sys_io_getevents
+	.long sys_io_submit
+	.long sys_io_cancel
+	.long sys_fadvise64	/* 250 */
+	.long sys_ni_syscall
+	.long sys_exit_group
+	.long sys_lookup_dcookie
+	.long sys_epoll_create
+	.long sys_epoll_ctl	/* 255 */
+	.long sys_epoll_wait
+	.long sys_remap_file_pages
+ 	.long sys_set_tid_address
+ 	.long sys_timer_create
+ 	.long sys_timer_settime		/* 260 */
+ 	.long sys_timer_gettime
+ 	.long sys_timer_getoverrun
+ 	.long sys_timer_delete
+ 	.long sys_clock_settime
+ 	.long sys_clock_gettime		/* 265 */
+ 	.long sys_clock_getres
+ 	.long sys_clock_nanosleep
+	.long sys_statfs64
+	.long sys_fstatfs64
+	.long sys_tgkill	/* 270 */
+	.long sys_utimes
+ 	.long sys_fadvise64_64
+	.long sys_ni_syscall	/* sys_vserver */
+	.long sys_ni_syscall	/* sys_mbind */
+	.long sys_ni_syscall	/* 275 sys_get_mempolicy */
+	.long sys_ni_syscall	/* sys_set_mempolicy */
+	.long sys_mq_open
+	.long sys_mq_unlink
+	.long sys_mq_timedsend
+	.long sys_mq_timedreceive	/* 280 */
+	.long sys_mq_notify
+	.long sys_mq_getsetattr
+	.long sys_ni_syscall		/* reserved for kexec */
+	.long sys_waitid
+
+        /*
+         * NOTE!! This doesn't have to be exact - we just have
+         * to make sure we have _enough_ of the "sys_ni_syscall"
+         * entries. Don't panic if you notice that this hasn't
+         * been shrunk every time we add a new system call.
+         */
+
+	.rept NR_syscalls - (.-sys_call_table) / 4
+		.long sys_ni_syscall
+	.endr
+
diff --git a/arch/cris/arch-v32/kernel/fasttimer.c b/arch/cris/arch-v32/kernel/fasttimer.c
new file mode 100644
index 00000000000..ea2b4a97c8c
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/fasttimer.c
@@ -0,0 +1,996 @@
+/* $Id: fasttimer.c,v 1.11 2005/01/04 11:15:46 starvik Exp $
+ * linux/arch/cris/kernel/fasttimer.c
+ *
+ * Fast timers for ETRAX FS
+ * This may be useful in other OS than Linux so use 2 space indentation...
+ *
+ * $Log: fasttimer.c,v $
+ * Revision 1.11  2005/01/04 11:15:46  starvik
+ * Don't share timer IRQ.
+ *
+ * Revision 1.10  2004/12/07 09:19:38  starvik
+ * Corrected includes.
+ * Use correct interrupt macros.
+ *
+ * Revision 1.9  2004/05/14 10:18:58  starvik
+ * Export fast_timer_list
+ *
+ * Revision 1.8  2004/05/14 07:58:03  starvik
+ * Merge of changes from 2.4
+ *
+ * Revision 1.7  2003/07/10 12:06:14  starvik
+ * Return IRQ_NONE if irq wasn't handled
+ *
+ * Revision 1.6  2003/07/04 08:27:49  starvik
+ * Merge of Linux 2.5.74
+ *
+ * Revision 1.5  2003/06/05 10:16:22  johana
+ * New INTR_VECT macros.
+ *
+ * Revision 1.4  2003/06/03 08:49:45  johana
+ * Fixed typo.
+ *
+ * Revision 1.3  2003/06/02 12:51:27  johana
+ * Now compiles.
+ * Commented some include files that probably can be removed.
+ *
+ * Revision 1.2  2003/06/02 12:09:41  johana
+ * Ported to ETRAX FS using the trig interrupt instead of timer1.
+ *
+ * Revision 1.3  2002/12/12 08:26:32  starvik
+ * Don't use C-comments inside CVS comments
+ *
+ * Revision 1.2  2002/12/11 15:42:02  starvik
+ * Extracted v10 (ETRAX 100LX) specific stuff from arch/cris/kernel/
+ *
+ * Revision 1.1  2002/11/18 07:58:06  starvik
+ * Fast timers (from Linux 2.4)
+ *
+ * Revision 1.5  2002/10/15 06:21:39  starvik
+ * Added call to init_waitqueue_head
+ *
+ * Revision 1.4  2002/05/28 17:47:59  johana
+ * Added del_fast_timer()
+ *
+ * Revision 1.3  2002/05/28 16:16:07  johana
+ * Handle empty fast_timer_list
+ *
+ * Revision 1.2  2002/05/27 15:38:42  johana
+ * Made it compile without warnings on Linux 2.4.
+ * (includes, wait_queue, PROC_FS and snprintf)
+ *
+ * Revision 1.1  2002/05/27 15:32:25  johana
+ * arch/etrax100/kernel/fasttimer.c v1.8 from the elinux tree.
+ *
+ * Revision 1.8  2001/11/27 13:50:40  pkj
+ * Disable interrupts while stopping the timer and while modifying the
+ * list of active timers in timer1_handler() as it may be interrupted
+ * by other interrupts (e.g., the serial interrupt) which may add fast
+ * timers.
+ *
+ * Revision 1.7  2001/11/22 11:50:32  pkj
+ * * Only store information about the last 16 timers.
+ * * proc_fasttimer_read() now uses an allocated buffer, since it
+ *   requires more space than just a page even for only writing the
+ *   last 16 timers. The buffer is only allocated on request, so
+ *   unless /proc/fasttimer is read, it is never allocated.
+ * * Renamed fast_timer_started to fast_timers_started to match
+ *   fast_timers_added and fast_timers_expired.
+ * * Some clean-up.
+ *
+ * Revision 1.6  2000/12/13 14:02:08  johana
+ * Removed volatile for fast_timer_list
+ *
+ * Revision 1.5  2000/12/13 13:55:35  johana
+ * Added DEBUG_LOG, added som cli() and cleanup
+ *
+ * Revision 1.4  2000/12/05 13:48:50  johana
+ * Added range check when writing proc file, modified timer int handling
+ *
+ * Revision 1.3  2000/11/23 10:10:20  johana
+ * More debug/logging possibilities.
+ * Moved GET_JIFFIES_USEC() to timex.h and time.c
+ *
+ * Revision 1.2  2000/11/01 13:41:04  johana
+ * Clean up and bugfixes.
+ * Created new do_gettimeofday_fast() that gets a timeval struct
+ * with time based on jiffies and *R_TIMER0_DATA, uses a table
+ * for fast conversion of timer value to microseconds.
+ * (Much faster the standard do_gettimeofday() and we don't really
+ * wan't to use the true time - we wan't the "uptime" so timers don't screw up
+ * when we change the time.
+ * TODO: Add efficient support for continuous timers as well.
+ *
+ * Revision 1.1  2000/10/26 15:49:16  johana
+ * Added fasttimer, highresolution timers.
+ *
+ * Copyright (C) 2000,2001 2002, 2003 Axis Communications AB, Lund, Sweden
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/param.h>
+#include <linux/string.h>
+#include <linux/vmalloc.h>
+#include <linux/interrupt.h>
+#include <linux/time.h>
+#include <linux/delay.h>
+
+#include <asm/irq.h>
+#include <asm/system.h>
+
+#include <linux/config.h>
+#include <linux/version.h>
+
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/timer_defs.h>
+#include <asm/fasttimer.h>
+#include <linux/proc_fs.h>
+
+/*
+ * timer0 is running at 100MHz and generating jiffies timer ticks
+ * at 100 or 1000 HZ.
+ * fasttimer gives an API that gives timers that expire "between" the jiffies
+ * giving microsecond resolution (10 ns).
+ * fasttimer uses reg_timer_rw_trig register to get interrupt when
+ * r_time reaches a certain value.
+ */
+
+
+#define DEBUG_LOG_INCLUDED
+#define FAST_TIMER_LOG
+//#define FAST_TIMER_TEST
+
+#define FAST_TIMER_SANITY_CHECKS
+
+#ifdef FAST_TIMER_SANITY_CHECKS
+#define SANITYCHECK(x) x
+static int sanity_failed = 0;
+#else
+#define SANITYCHECK(x)
+#endif
+
+#define D1(x)
+#define D2(x)
+#define DP(x)
+
+#define __INLINE__ inline
+
+static int fast_timer_running = 0;
+static int fast_timers_added = 0;
+static int fast_timers_started = 0;
+static int fast_timers_expired = 0;
+static int fast_timers_deleted = 0;
+static int fast_timer_is_init = 0;
+static int fast_timer_ints = 0;
+
+struct fast_timer *fast_timer_list = NULL;
+
+#ifdef DEBUG_LOG_INCLUDED
+#define DEBUG_LOG_MAX 128
+static const char * debug_log_string[DEBUG_LOG_MAX];
+static unsigned long debug_log_value[DEBUG_LOG_MAX];
+static int debug_log_cnt = 0;
+static int debug_log_cnt_wrapped = 0;
+
+#define DEBUG_LOG(string, value) \
+{ \
+  unsigned long log_flags; \
+  local_irq_save(log_flags); \
+  debug_log_string[debug_log_cnt] = (string); \
+  debug_log_value[debug_log_cnt] = (unsigned long)(value); \
+  if (++debug_log_cnt >= DEBUG_LOG_MAX) \
+  { \
+    debug_log_cnt = debug_log_cnt % DEBUG_LOG_MAX; \
+    debug_log_cnt_wrapped = 1; \
+  } \
+  local_irq_restore(log_flags); \
+}
+#else
+#define DEBUG_LOG(string, value)
+#endif
+
+
+#define NUM_TIMER_STATS 16
+#ifdef FAST_TIMER_LOG
+struct fast_timer timer_added_log[NUM_TIMER_STATS];
+struct fast_timer timer_started_log[NUM_TIMER_STATS];
+struct fast_timer timer_expired_log[NUM_TIMER_STATS];
+#endif
+
+int timer_div_settings[NUM_TIMER_STATS];
+int timer_delay_settings[NUM_TIMER_STATS];
+
+
+static void
+timer_trig_handler(void);
+
+
+
+/* Not true gettimeofday, only checks the jiffies (uptime) + useconds */
+void __INLINE__ do_gettimeofday_fast(struct timeval *tv)
+{
+  unsigned long sec = jiffies;
+  unsigned long usec = GET_JIFFIES_USEC();
+
+  usec += (sec % HZ) * (1000000 / HZ);
+  sec = sec / HZ;
+
+  if (usec > 1000000)
+  {
+    usec -= 1000000;
+    sec++;
+  }
+  tv->tv_sec = sec;
+  tv->tv_usec = usec;
+}
+
+int __INLINE__ timeval_cmp(struct timeval *t0, struct timeval *t1)
+{
+  if (t0->tv_sec < t1->tv_sec)
+  {
+    return -1;
+  }
+  else if (t0->tv_sec > t1->tv_sec)
+  {
+    return 1;
+  }
+  if (t0->tv_usec < t1->tv_usec)
+  {
+    return -1;
+  }
+  else if (t0->tv_usec > t1->tv_usec)
+  {
+    return 1;
+  }
+  return 0;
+}
+
+/* Called with ints off */
+void __INLINE__ start_timer_trig(unsigned long delay_us)
+{
+  reg_timer_rw_ack_intr ack_intr = { 0 };
+  reg_timer_rw_intr_mask intr_mask;
+  reg_timer_rw_trig trig;
+  reg_timer_rw_trig_cfg trig_cfg = { 0 };
+  reg_timer_r_time r_time;
+
+  r_time = REG_RD(timer, regi_timer, r_time);
+
+  D1(printk("start_timer_trig : %d us freq: %i div: %i\n",
+            delay_us, freq_index, div));
+  /* Clear trig irq */
+  intr_mask = REG_RD(timer, regi_timer, rw_intr_mask);
+  intr_mask.trig = 0;
+  REG_WR(timer, regi_timer, rw_intr_mask, intr_mask);
+
+  /* Set timer values */
+  /* r_time is 100MHz (10 ns resolution) */
+  trig = r_time + delay_us*(1000/10);
+
+  timer_div_settings[fast_timers_started % NUM_TIMER_STATS] = trig;
+  timer_delay_settings[fast_timers_started % NUM_TIMER_STATS] = delay_us;
+
+  /* Ack interrupt */
+  ack_intr.trig = 1;
+  REG_WR(timer, regi_timer, rw_ack_intr, ack_intr);
+
+  /* Start timer */
+  REG_WR(timer, regi_timer, rw_trig, trig);
+  trig_cfg.tmr = regk_timer_time;
+  REG_WR(timer, regi_timer, rw_trig_cfg, trig_cfg);
+
+  /* Check if we have already passed the trig time */
+  r_time = REG_RD(timer, regi_timer, r_time);
+  if (r_time < trig) {
+    /* No, Enable trig irq */
+    intr_mask = REG_RD(timer, regi_timer, rw_intr_mask);
+    intr_mask.trig = 1;
+    REG_WR(timer, regi_timer, rw_intr_mask, intr_mask);
+    fast_timers_started++;
+    fast_timer_running = 1;
+  }
+  else
+  {
+    /* We have passed the time, disable trig point, ack intr */
+    trig_cfg.tmr = regk_timer_off;
+    REG_WR(timer, regi_timer, rw_trig_cfg, trig_cfg);
+    REG_WR(timer, regi_timer, rw_ack_intr, ack_intr);
+    /* call the int routine directly */
+    timer_trig_handler();
+  }
+
+}
+
+/* In version 1.4 this function takes 27 - 50 us */
+void start_one_shot_timer(struct fast_timer *t,
+                          fast_timer_function_type *function,
+                          unsigned long data,
+                          unsigned long delay_us,
+                          const char *name)
+{
+  unsigned long flags;
+  struct fast_timer *tmp;
+
+  D1(printk("sft %s %d us\n", name, delay_us));
+
+  local_irq_save(flags);
+
+  do_gettimeofday_fast(&t->tv_set);
+  tmp = fast_timer_list;
+
+  SANITYCHECK({ /* Check so this is not in the list already... */
+    while (tmp != NULL)
+    {
+      if (tmp == t)
+      {
+        printk("timer name: %s data: 0x%08lX already in list!\n", name, data);
+        sanity_failed++;
+        return;
+      }
+      else
+      {
+        tmp = tmp->next;
+      }
+    }
+    tmp = fast_timer_list;
+  });
+
+  t->delay_us = delay_us;
+  t->function = function;
+  t->data = data;
+  t->name = name;
+
+  t->tv_expires.tv_usec = t->tv_set.tv_usec + delay_us % 1000000;
+  t->tv_expires.tv_sec  = t->tv_set.tv_sec  + delay_us / 1000000;
+  if (t->tv_expires.tv_usec > 1000000)
+  {
+    t->tv_expires.tv_usec -= 1000000;
+    t->tv_expires.tv_sec++;
+  }
+#ifdef FAST_TIMER_LOG
+  timer_added_log[fast_timers_added % NUM_TIMER_STATS] = *t;
+#endif
+  fast_timers_added++;
+
+  /* Check if this should timeout before anything else */
+  if (tmp == NULL || timeval_cmp(&t->tv_expires, &tmp->tv_expires) < 0)
+  {
+    /* Put first in list and modify the timer value */
+    t->prev = NULL;
+    t->next = fast_timer_list;
+    if (fast_timer_list)
+    {
+      fast_timer_list->prev = t;
+    }
+    fast_timer_list = t;
+#ifdef FAST_TIMER_LOG
+    timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
+#endif
+    start_timer_trig(delay_us);
+  } else {
+    /* Put in correct place in list */
+    while (tmp->next &&
+           timeval_cmp(&t->tv_expires, &tmp->next->tv_expires) > 0)
+    {
+      tmp = tmp->next;
+    }
+    /* Insert t after tmp */
+    t->prev = tmp;
+    t->next = tmp->next;
+    if (tmp->next)
+    {
+      tmp->next->prev = t;
+    }
+    tmp->next = t;
+  }
+
+  D2(printk("start_one_shot_timer: %d us done\n", delay_us));
+
+  local_irq_restore(flags);
+} /* start_one_shot_timer */
+
+static inline int fast_timer_pending (const struct fast_timer * t)
+{
+  return (t->next != NULL) || (t->prev != NULL) || (t == fast_timer_list);
+}
+
+static inline int detach_fast_timer (struct fast_timer *t)
+{
+  struct fast_timer *next, *prev;
+  if (!fast_timer_pending(t))
+    return 0;
+  next = t->next;
+  prev = t->prev;
+  if (next)
+    next->prev = prev;
+  if (prev)
+    prev->next = next;
+  else
+    fast_timer_list = next;
+  fast_timers_deleted++;
+  return 1;
+}
+
+int del_fast_timer(struct fast_timer * t)
+{
+  unsigned long flags;
+  int ret;
+
+  local_irq_save(flags);
+  ret = detach_fast_timer(t);
+  t->next = t->prev = NULL;
+  local_irq_restore(flags);
+  return ret;
+} /* del_fast_timer */
+
+
+/* Interrupt routines or functions called in interrupt context */
+
+/* Timer interrupt handler for trig interrupts */
+
+static irqreturn_t
+timer_trig_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+  reg_timer_r_masked_intr masked_intr;
+
+  /* Check if the timer interrupt is for us (a trig int) */
+  masked_intr = REG_RD(timer, regi_timer, r_masked_intr);
+  if (!masked_intr.trig)
+    return IRQ_NONE;
+  timer_trig_handler();
+  return IRQ_HANDLED;
+}
+
+static void timer_trig_handler(void)
+{
+  reg_timer_rw_ack_intr ack_intr = { 0 };
+  reg_timer_rw_intr_mask intr_mask;
+  reg_timer_rw_trig_cfg trig_cfg = { 0 };
+  struct fast_timer *t;
+  unsigned long flags;
+
+  local_irq_save(flags);
+
+  /* Clear timer trig interrupt */
+  intr_mask = REG_RD(timer, regi_timer, rw_intr_mask);
+  intr_mask.trig = 0;
+  REG_WR(timer, regi_timer, rw_intr_mask, intr_mask);
+
+  /* First stop timer, then ack interrupt */
+  /* Stop timer */
+  trig_cfg.tmr = regk_timer_off;
+  REG_WR(timer, regi_timer, rw_trig_cfg, trig_cfg);
+
+  /* Ack interrupt */
+  ack_intr.trig = 1;
+  REG_WR(timer, regi_timer, rw_ack_intr, ack_intr);
+
+  fast_timer_running = 0;
+  fast_timer_ints++;
+
+  local_irq_restore(flags);
+
+  t = fast_timer_list;
+  while (t)
+  {
+    struct timeval tv;
+
+    /* Has it really expired? */
+    do_gettimeofday_fast(&tv);
+    D1(printk("t: %is %06ius\n", tv.tv_sec, tv.tv_usec));
+
+    if (timeval_cmp(&t->tv_expires, &tv) <= 0)
+    {
+      /* Yes it has expired */
+#ifdef FAST_TIMER_LOG
+      timer_expired_log[fast_timers_expired % NUM_TIMER_STATS] = *t;
+#endif
+      fast_timers_expired++;
+
+      /* Remove this timer before call, since it may reuse the timer */
+      local_irq_save(flags);
+      if (t->prev)
+      {
+        t->prev->next = t->next;
+      }
+      else
+      {
+        fast_timer_list = t->next;
+      }
+      if (t->next)
+      {
+        t->next->prev = t->prev;
+      }
+      t->prev = NULL;
+      t->next = NULL;
+      local_irq_restore(flags);
+
+      if (t->function != NULL)
+      {
+        t->function(t->data);
+      }
+      else
+      {
+        DEBUG_LOG("!trimertrig %i function==NULL!\n", fast_timer_ints);
+      }
+    }
+    else
+    {
+      /* Timer is to early, let's set it again using the normal routines */
+      D1(printk(".\n"));
+    }
+
+    local_irq_save(flags);
+    if ((t = fast_timer_list) != NULL)
+    {
+      /* Start next timer.. */
+      long us;
+      struct timeval tv;
+
+      do_gettimeofday_fast(&tv);
+      us = ((t->tv_expires.tv_sec - tv.tv_sec) * 1000000 +
+            t->tv_expires.tv_usec - tv.tv_usec);
+      if (us > 0)
+      {
+        if (!fast_timer_running)
+        {
+#ifdef FAST_TIMER_LOG
+          timer_started_log[fast_timers_started % NUM_TIMER_STATS] = *t;
+#endif
+          start_timer_trig(us);
+        }
+        local_irq_restore(flags);
+        break;
+      }
+      else
+      {
+        /* Timer already expired, let's handle it better late than never.
+         * The normal loop handles it
+         */
+        D1(printk("e! %d\n", us));
+      }
+    }
+    local_irq_restore(flags);
+  }
+
+  if (!t)
+  {
+    D1(printk("ttrig stop!\n"));
+  }
+}
+
+static void wake_up_func(unsigned long data)
+{
+#ifdef DECLARE_WAITQUEUE
+  wait_queue_head_t  *sleep_wait_p = (wait_queue_head_t*)data;
+#else
+  struct wait_queue **sleep_wait_p = (struct wait_queue **)data;
+#endif
+  wake_up(sleep_wait_p);
+}
+
+
+/* Useful API */
+
+void schedule_usleep(unsigned long us)
+{
+  struct fast_timer t;
+#ifdef DECLARE_WAITQUEUE
+  wait_queue_head_t sleep_wait;
+  init_waitqueue_head(&sleep_wait);
+  {
+  DECLARE_WAITQUEUE(wait, current);
+#else
+  struct wait_queue *sleep_wait = NULL;
+  struct wait_queue wait = { current, NULL };
+#endif
+
+  D1(printk("schedule_usleep(%d)\n", us));
+  add_wait_queue(&sleep_wait, &wait);
+  set_current_state(TASK_INTERRUPTIBLE);
+  start_one_shot_timer(&t, wake_up_func, (unsigned long)&sleep_wait, us,
+                       "usleep");
+  schedule();
+  set_current_state(TASK_RUNNING);
+  remove_wait_queue(&sleep_wait, &wait);
+  D1(printk("done schedule_usleep(%d)\n", us));
+#ifdef DECLARE_WAITQUEUE
+  }
+#endif
+}
+
+#ifdef CONFIG_PROC_FS
+static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
+                       ,int *eof, void *data_unused
+#else
+                        ,int unused
+#endif
+                               );
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
+static struct proc_dir_entry *fasttimer_proc_entry;
+#else
+static struct proc_dir_entry fasttimer_proc_entry =
+{
+  0, 9, "fasttimer",
+  S_IFREG | S_IRUGO, 1, 0, 0,
+  0, NULL /* ops -- default to array */,
+  &proc_fasttimer_read /* get_info */,
+};
+#endif
+#endif /* CONFIG_PROC_FS */
+
+#ifdef CONFIG_PROC_FS
+
+/* This value is very much based on testing */
+#define BIG_BUF_SIZE (500 + NUM_TIMER_STATS * 300)
+
+static int proc_fasttimer_read(char *buf, char **start, off_t offset, int len
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
+                       ,int *eof, void *data_unused
+#else
+                        ,int unused
+#endif
+                               )
+{
+  unsigned long flags;
+  int i = 0;
+  int num_to_show;
+  struct timeval tv;
+  struct fast_timer *t, *nextt;
+  static char *bigbuf = NULL;
+  static unsigned long used;
+
+  if (!bigbuf && !(bigbuf = vmalloc(BIG_BUF_SIZE)))
+  {
+    used = 0;
+    bigbuf[0] = '\0';
+    return 0;
+  }
+
+  if (!offset || !used)
+  {
+    do_gettimeofday_fast(&tv);
+
+    used = 0;
+    used += sprintf(bigbuf + used, "Fast timers added:     %i\n",
+                    fast_timers_added);
+    used += sprintf(bigbuf + used, "Fast timers started:   %i\n",
+                    fast_timers_started);
+    used += sprintf(bigbuf + used, "Fast timer interrupts: %i\n",
+                    fast_timer_ints);
+    used += sprintf(bigbuf + used, "Fast timers expired:   %i\n",
+                    fast_timers_expired);
+    used += sprintf(bigbuf + used, "Fast timers deleted:   %i\n",
+                    fast_timers_deleted);
+    used += sprintf(bigbuf + used, "Fast timer running:    %s\n",
+                    fast_timer_running ? "yes" : "no");
+    used += sprintf(bigbuf + used, "Current time:          %lu.%06lu\n",
+                    (unsigned long)tv.tv_sec,
+                    (unsigned long)tv.tv_usec);
+#ifdef FAST_TIMER_SANITY_CHECKS
+    used += sprintf(bigbuf + used, "Sanity failed:         %i\n",
+                    sanity_failed);
+#endif
+    used += sprintf(bigbuf + used, "\n");
+
+#ifdef DEBUG_LOG_INCLUDED
+    {
+      int end_i = debug_log_cnt;
+      i = 0;
+
+      if (debug_log_cnt_wrapped)
+      {
+        i = debug_log_cnt;
+      }
+
+      while ((i != end_i || (debug_log_cnt_wrapped && !used)) &&
+             used+100 < BIG_BUF_SIZE)
+      {
+        used += sprintf(bigbuf + used, debug_log_string[i],
+                        debug_log_value[i]);
+        i = (i+1) % DEBUG_LOG_MAX;
+      }
+    }
+    used += sprintf(bigbuf + used, "\n");
+#endif
+
+    num_to_show = (fast_timers_started < NUM_TIMER_STATS ? fast_timers_started:
+                   NUM_TIMER_STATS);
+    used += sprintf(bigbuf + used, "Timers started: %i\n", fast_timers_started);
+    for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE) ; i++)
+    {
+      int cur = (fast_timers_started - i - 1) % NUM_TIMER_STATS;
+
+#if 1 //ndef FAST_TIMER_LOG
+      used += sprintf(bigbuf + used, "div: %i delay: %i"
+                      "\n",
+                      timer_div_settings[cur],
+                      timer_delay_settings[cur]
+                      );
+#endif
+#ifdef FAST_TIMER_LOG
+      t = &timer_started_log[cur];
+      used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
+                      "d: %6li us data: 0x%08lX"
+                      "\n",
+                      t->name,
+                      (unsigned long)t->tv_set.tv_sec,
+                      (unsigned long)t->tv_set.tv_usec,
+                      (unsigned long)t->tv_expires.tv_sec,
+                      (unsigned long)t->tv_expires.tv_usec,
+                      t->delay_us,
+                      t->data
+                      );
+#endif
+    }
+    used += sprintf(bigbuf + used, "\n");
+
+#ifdef FAST_TIMER_LOG
+    num_to_show = (fast_timers_added < NUM_TIMER_STATS ? fast_timers_added:
+                   NUM_TIMER_STATS);
+    used += sprintf(bigbuf + used, "Timers added: %i\n", fast_timers_added);
+    for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE); i++)
+    {
+      t = &timer_added_log[(fast_timers_added - i - 1) % NUM_TIMER_STATS];
+      used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
+                      "d: %6li us data: 0x%08lX"
+                      "\n",
+                      t->name,
+                      (unsigned long)t->tv_set.tv_sec,
+                      (unsigned long)t->tv_set.tv_usec,
+                      (unsigned long)t->tv_expires.tv_sec,
+                      (unsigned long)t->tv_expires.tv_usec,
+                      t->delay_us,
+                      t->data
+                      );
+    }
+    used += sprintf(bigbuf + used, "\n");
+
+    num_to_show = (fast_timers_expired < NUM_TIMER_STATS ? fast_timers_expired:
+                   NUM_TIMER_STATS);
+    used += sprintf(bigbuf + used, "Timers expired: %i\n", fast_timers_expired);
+    for (i = 0; i < num_to_show && (used+100 < BIG_BUF_SIZE); i++)
+    {
+      t = &timer_expired_log[(fast_timers_expired - i - 1) % NUM_TIMER_STATS];
+      used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
+                      "d: %6li us data: 0x%08lX"
+                      "\n",
+                      t->name,
+                      (unsigned long)t->tv_set.tv_sec,
+                      (unsigned long)t->tv_set.tv_usec,
+                      (unsigned long)t->tv_expires.tv_sec,
+                      (unsigned long)t->tv_expires.tv_usec,
+                      t->delay_us,
+                      t->data
+                      );
+    }
+    used += sprintf(bigbuf + used, "\n");
+#endif
+
+    used += sprintf(bigbuf + used, "Active timers:\n");
+    local_irq_save(flags);
+    local_irq_save(flags);
+    t = fast_timer_list;
+    while (t != NULL && (used+100 < BIG_BUF_SIZE))
+    {
+      nextt = t->next;
+      local_irq_restore(flags);
+      used += sprintf(bigbuf + used, "%-14s s: %6lu.%06lu e: %6lu.%06lu "
+                      "d: %6li us data: 0x%08lX"
+/*                      " func: 0x%08lX" */
+                      "\n",
+                      t->name,
+                      (unsigned long)t->tv_set.tv_sec,
+                      (unsigned long)t->tv_set.tv_usec,
+                      (unsigned long)t->tv_expires.tv_sec,
+                      (unsigned long)t->tv_expires.tv_usec,
+                      t->delay_us,
+                      t->data
+/*                      , t->function */
+                      );
+      local_irq_disable();
+      if (t->next != nextt)
+      {
+        printk("timer removed!\n");
+      }
+      t = nextt;
+    }
+    local_irq_restore(flags);
+  }
+
+  if (used - offset < len)
+  {
+    len = used - offset;
+  }
+
+  memcpy(buf, bigbuf + offset, len);
+  *start = buf;
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
+  *eof = 1;
+#endif
+
+  return len;
+}
+#endif /* PROC_FS */
+
+#ifdef FAST_TIMER_TEST
+static volatile unsigned long i = 0;
+static volatile int num_test_timeout = 0;
+static struct fast_timer tr[10];
+static int exp_num[10];
+
+static struct timeval tv_exp[100];
+
+static void test_timeout(unsigned long data)
+{
+  do_gettimeofday_fast(&tv_exp[data]);
+  exp_num[data] = num_test_timeout;
+
+  num_test_timeout++;
+}
+
+static void test_timeout1(unsigned long data)
+{
+  do_gettimeofday_fast(&tv_exp[data]);
+  exp_num[data] = num_test_timeout;
+  if (data < 7)
+  {
+    start_one_shot_timer(&tr[i], test_timeout1, i, 1000, "timeout1");
+    i++;
+  }
+  num_test_timeout++;
+}
+
+DP(
+static char buf0[2000];
+static char buf1[2000];
+static char buf2[2000];
+static char buf3[2000];
+static char buf4[2000];
+);
+
+static char buf5[6000];
+static int j_u[1000];
+
+static void fast_timer_test(void)
+{
+  int prev_num;
+  int j;
+
+  struct timeval tv, tv0, tv1, tv2;
+
+  printk("fast_timer_test() start\n");
+  do_gettimeofday_fast(&tv);
+
+  for (j = 0; j < 1000; j++)
+  {
+    j_u[j] = GET_JIFFIES_USEC();
+  }
+  for (j = 0; j < 100; j++)
+  {
+    do_gettimeofday_fast(&tv_exp[j]);
+  }
+  printk("fast_timer_test() %is %06i\n", tv.tv_sec, tv.tv_usec);
+
+  for (j = 0; j < 1000; j++)
+  {
+    printk("%i %i %i %i %i\n",j_u[j], j_u[j+1], j_u[j+2], j_u[j+3], j_u[j+4]);
+    j += 4;
+  }
+  for (j = 0; j < 100; j++)
+  {
+    printk("%i.%i %i.%i %i.%i %i.%i %i.%i\n",
+           tv_exp[j].tv_sec,tv_exp[j].tv_usec,
+           tv_exp[j+1].tv_sec,tv_exp[j+1].tv_usec,
+           tv_exp[j+2].tv_sec,tv_exp[j+2].tv_usec,
+           tv_exp[j+3].tv_sec,tv_exp[j+3].tv_usec,
+           tv_exp[j+4].tv_sec,tv_exp[j+4].tv_usec);
+    j += 4;
+  }
+  do_gettimeofday_fast(&tv0);
+  start_one_shot_timer(&tr[i], test_timeout, i, 50000, "test0");
+  DP(proc_fasttimer_read(buf0, NULL, 0, 0, 0));
+  i++;
+  start_one_shot_timer(&tr[i], test_timeout, i, 70000, "test1");
+  DP(proc_fasttimer_read(buf1, NULL, 0, 0, 0));
+  i++;
+  start_one_shot_timer(&tr[i], test_timeout, i, 40000, "test2");
+  DP(proc_fasttimer_read(buf2, NULL, 0, 0, 0));
+  i++;
+  start_one_shot_timer(&tr[i], test_timeout, i, 60000, "test3");
+  DP(proc_fasttimer_read(buf3, NULL, 0, 0, 0));
+  i++;
+  start_one_shot_timer(&tr[i], test_timeout1, i, 55000, "test4xx");
+  DP(proc_fasttimer_read(buf4, NULL, 0, 0, 0));
+  i++;
+  do_gettimeofday_fast(&tv1);
+
+  proc_fasttimer_read(buf5, NULL, 0, 0, 0);
+
+  prev_num = num_test_timeout;
+  while (num_test_timeout < i)
+  {
+    if (num_test_timeout != prev_num)
+    {
+      prev_num = num_test_timeout;
+    }
+  }
+  do_gettimeofday_fast(&tv2);
+  printk("Timers started    %is %06i\n", tv0.tv_sec, tv0.tv_usec);
+  printk("Timers started at %is %06i\n", tv1.tv_sec, tv1.tv_usec);
+  printk("Timers done       %is %06i\n", tv2.tv_sec, tv2.tv_usec);
+  DP(printk("buf0:\n");
+     printk(buf0);
+     printk("buf1:\n");
+     printk(buf1);
+     printk("buf2:\n");
+     printk(buf2);
+     printk("buf3:\n");
+     printk(buf3);
+     printk("buf4:\n");
+     printk(buf4);
+  );
+  printk("buf5:\n");
+  printk(buf5);
+
+  printk("timers set:\n");
+  for(j = 0; j<i; j++)
+  {
+    struct fast_timer *t = &tr[j];
+    printk("%-10s set: %6is %06ius exp: %6is %06ius "
+           "data: 0x%08X func: 0x%08X\n",
+           t->name,
+           t->tv_set.tv_sec,
+           t->tv_set.tv_usec,
+           t->tv_expires.tv_sec,
+           t->tv_expires.tv_usec,
+           t->data,
+           t->function
+           );
+
+    printk("           del: %6ius     did exp: %6is %06ius as #%i error: %6li\n",
+           t->delay_us,
+           tv_exp[j].tv_sec,
+           tv_exp[j].tv_usec,
+           exp_num[j],
+           (tv_exp[j].tv_sec - t->tv_expires.tv_sec)*1000000 + tv_exp[j].tv_usec - t->tv_expires.tv_usec);
+  }
+  proc_fasttimer_read(buf5, NULL, 0, 0, 0);
+  printk("buf5 after all done:\n");
+  printk(buf5);
+  printk("fast_timer_test() done\n");
+}
+#endif
+
+
+void fast_timer_init(void)
+{
+  /* For some reason, request_irq() hangs when called froom time_init() */
+  if (!fast_timer_is_init)
+  {
+    printk("fast_timer_init()\n");
+
+#ifdef CONFIG_PROC_FS
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
+   if ((fasttimer_proc_entry = create_proc_entry( "fasttimer", 0, 0 )))
+     fasttimer_proc_entry->read_proc = proc_fasttimer_read;
+#else
+    proc_register_dynamic(&proc_root, &fasttimer_proc_entry);
+#endif
+#endif /* PROC_FS */
+    if(request_irq(TIMER_INTR_VECT, timer_trig_interrupt, SA_INTERRUPT,
+                   "fast timer int", NULL))
+    {
+      printk("err: timer1 irq\n");
+    }
+    fast_timer_is_init = 1;
+#ifdef FAST_TIMER_TEST
+    printk("do test\n");
+    fast_timer_test();
+#endif
+  }
+}
diff --git a/arch/cris/arch-v32/kernel/head.S b/arch/cris/arch-v32/kernel/head.S
new file mode 100644
index 00000000000..3cfe57dc391
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/head.S
@@ -0,0 +1,448 @@
+/*
+ * CRISv32 kernel startup code.
+ *
+ * Copyright (C) 2003, Axis Communications AB
+ */
+
+#include <linux/config.h>
+
+#define ASSEMBLER_MACROS_ONLY
+
+/*
+ * The macros found in mmu_defs_asm.h uses the ## concatenation operator, so
+ * -traditional must not be used when assembling this file.
+ */
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/asm/mmu_defs_asm.h>
+#include <asm/arch/hwregs/asm/reg_map_asm.h>
+#include <asm/arch/hwregs/asm/config_defs_asm.h>
+#include <asm/arch/hwregs/asm/bif_core_defs_asm.h>
+
+#define CRAMFS_MAGIC 0x28cd3d45
+#define RAM_INIT_MAGIC 0x56902387
+#define COMMAND_LINE_MAGIC 0x87109563
+
+	;; NOTE: R8 and R9 carry information from the decompressor (if the
+	;; kernel was compressed). They must not be used in the code below
+	;; until they are read!
+
+	;; Exported symbols.
+	.global etrax_irv
+	.global romfs_start
+	.global romfs_length
+	.global romfs_in_flash
+	.global swapper_pg_dir
+	.global crisv32_nand_boot
+	.global crisv32_nand_cramfs_offset
+
+	;; Dummy section to make it bootable with current VCS simulator
+#ifdef CONFIG_ETRAXFS_SIM
+	.section ".boot", "ax"
+	ba tstart
+	nop
+#endif
+
+	.text
+tstart:
+	;; This is the entry point of the kernel. The CPU is currently in
+	;; supervisor mode.
+	;;
+	;; 0x00000000 if flash.
+	;; 0x40004000 if DRAM.
+	;;
+	di
+
+	;; Start clocks for used blocks.
+	move.d REG_ADDR(config, regi_config, rw_clk_ctrl), $r1
+	move.d [$r1], $r0
+	or.d   REG_STATE(config, rw_clk_ctrl, cpu, yes) | \
+	       REG_STATE(config, rw_clk_ctrl, bif, yes) | \
+	       REG_STATE(config, rw_clk_ctrl, fix_io, yes), $r0
+	move.d $r0, [$r1]
+
+	;; Set up waitstates etc
+	move.d   REG_ADDR(bif_core, regi_bif_core, rw_grp1_cfg), $r0
+	move.d   CONFIG_ETRAX_MEM_GRP1_CONFIG, $r1
+	move.d   $r1, [$r0]
+	move.d   REG_ADDR(bif_core, regi_bif_core, rw_grp2_cfg), $r0
+	move.d   CONFIG_ETRAX_MEM_GRP2_CONFIG, $r1
+	move.d   $r1, [$r0]
+	move.d   REG_ADDR(bif_core, regi_bif_core, rw_grp3_cfg), $r0
+	move.d   CONFIG_ETRAX_MEM_GRP3_CONFIG, $r1
+	move.d   $r1, [$r0]
+	move.d   REG_ADDR(bif_core, regi_bif_core, rw_grp4_cfg), $r0
+	move.d   CONFIG_ETRAX_MEM_GRP4_CONFIG, $r1
+	move.d   $r1, [$r0]
+
+#ifdef CONFIG_ETRAXFS_SIM
+	;; Set up minimal flash waitstates
+	move.d 0, $r10
+	move.d REG_ADDR(bif_core, regi_bif_core, rw_grp1_cfg), $r11
+	move.d $r10, [$r11]
+#endif
+
+	;; Setup and enable the MMU. Use same configuration for both the data
+	;; and the instruction MMU.
+	;;
+	;; Note; 3 cycles is needed for a bank-select to take effect. Further;
+	;; bank 1 is the instruction MMU, bank 2 is the data MMU.
+#ifndef CONFIG_ETRAXFS_SIM
+	move.d	REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 8)	\
+		| REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 4)	\
+		| REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb), $r0
+#else
+	;; Map the virtual DRAM to the RW eprom area at address 0.
+	;; Also map 0xa for the hook calls,
+	move.d	REG_FIELD(mmu, rw_mm_kbase_hi, base_e, 8)	\
+		| REG_FIELD(mmu, rw_mm_kbase_hi, base_c, 0)	\
+		| REG_FIELD(mmu, rw_mm_kbase_hi, base_b, 0xb)   \
+		| REG_FIELD(mmu, rw_mm_kbase_hi, base_a, 0xa), $r0
+#endif
+
+	;; Temporary map of 0x40 -> 0x40 and 0x00 -> 0x00.
+	move.d	REG_FIELD(mmu, rw_mm_kbase_lo, base_4, 4)  \
+		| REG_FIELD(mmu, rw_mm_kbase_lo, base_0, 0), $r1
+
+	;; Enable certain page protections and setup linear mapping
+	;; for f,e,c,b,4,0.
+#ifndef CONFIG_ETRAXFS_SIM
+	move.d	REG_STATE(mmu, rw_mm_cfg, we, on)		\
+		| REG_STATE(mmu, rw_mm_cfg, acc, on)		\
+		| REG_STATE(mmu, rw_mm_cfg, ex, on)		\
+		| REG_STATE(mmu, rw_mm_cfg, inv, on)		\
+		| REG_STATE(mmu, rw_mm_cfg, seg_f, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_e, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_d, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_c, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_b, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_a, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_9, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_8, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_7, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_6, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_5, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_4, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_3, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_2, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_1, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_0, linear), $r2
+#else
+	move.d	REG_STATE(mmu, rw_mm_cfg, we, on)		\
+		| REG_STATE(mmu, rw_mm_cfg, acc, on)		\
+		| REG_STATE(mmu, rw_mm_cfg, ex, on)		\
+		| REG_STATE(mmu, rw_mm_cfg, inv, on)		\
+		| REG_STATE(mmu, rw_mm_cfg, seg_f, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_e, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_d, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_c, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_b, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_a, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_9, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_8, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_7, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_6, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_5, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_4, linear)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_3, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_2, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_1, page)	\
+		| REG_STATE(mmu, rw_mm_cfg, seg_0, linear), $r2
+#endif
+
+	;; Update instruction MMU.
+	move	1, $srs
+	nop
+	nop
+	nop
+	move	$r0, $s2	; kbase_hi.
+	move	$r1, $s1	; kbase_lo.
+	move	$r2, $s0	; mm_cfg, virtual memory configuration.
+
+	;; Update data MMU.
+	move	2, $srs
+	nop
+	nop
+	nop
+	move	$r0, $s2	; kbase_hi.
+	move	$r1, $s1	; kbase_lo
+	move	$r2, $s0	; mm_cfg, virtual memory configuration.
+
+	;; Enable data and instruction MMU.
+	move	0, $srs
+	moveq	0xf, $r0	;  IMMU, DMMU, DCache, Icache on
+	nop
+	nop
+	nop
+	move	$r0, $s0
+	nop
+	nop
+	nop
+
+#ifdef CONFIG_SMP
+	;; Read CPU ID
+	move    0, $srs
+	nop
+	nop
+	nop
+	move    $s10, $r0
+	cmpq    0, $r0
+	beq	master_cpu
+	nop
+slave_cpu:
+	; A slave waits for cpu_now_booting to be equal to CPU ID.
+	move.d	cpu_now_booting, $r1
+slave_wait:
+	cmp.d	[$r1], $r0
+	bne	slave_wait
+	nop
+	; Time to boot-up. Get stack location provided by master CPU.
+	move.d  smp_init_current_idle_thread, $r1
+	move.d  [$r1], $sp
+	add.d	8192, $sp
+	move.d	ebp_start, $r0	; Defined in linker-script.
+	move	$r0, $ebp
+	jsr	smp_callin
+	nop
+master_cpu:
+#endif
+#ifndef CONFIG_ETRAXFS_SIM
+	;; Check if starting from DRAM or flash.
+	lapcq	., $r0
+	and.d	0x7fffffff, $r0 ; Mask off the non-cache bit.
+	cmp.d	0x10000, $r0	; Arbitrary, something above this code.
+	blo	_inflash0
+	nop
+#endif
+
+	jump	_inram		; Jump to cached RAM.
+	nop
+
+	;; Jumpgate.
+_inflash0:
+	jump _inflash
+	nop
+
+	;; Put the following in a section so that storage for it can be
+	;; reclaimed after init is finished.
+	.section ".init.text", "ax"
+
+_inflash:
+
+	;; Initialize DRAM.
+	cmp.d	RAM_INIT_MAGIC, $r8 ; Already initialized?
+	beq	_dram_initialized
+	nop
+
+#include "../lib/dram_init.S"
+
+_dram_initialized:
+	;; Copy the text and data section to DRAM. This depends on that the
+	;; variables used below are correctly set up by the linker script.
+	;; The calculated value stored in R4 is used below.
+	moveq	0, $r0		; Source.
+	move.d	text_start, $r1	; Destination.
+	move.d	__vmlinux_end, $r2
+	move.d	$r2, $r4
+	sub.d	$r1, $r4
+1:	move.w	[$r0+], $r3
+	move.w	$r3, [$r1+]
+	cmp.d	$r2, $r1
+	blo	1b
+	nop
+
+	;; Keep CRAMFS in flash.
+	moveq	0, $r0
+	move.d	romfs_length, $r1
+	move.d	$r0, [$r1]
+	move.d	[$r4], $r0	; cramfs_super.magic
+	cmp.d	CRAMFS_MAGIC, $r0
+	bne 1f
+	nop
+
+	addoq	+4, $r4, $acr
+	move.d	[$acr], $r0
+	move.d	romfs_length, $r1
+	move.d	$r0, [$r1]
+	add.d	0xf0000000, $r4	; Add cached flash start in virtual memory.
+	move.d	romfs_start, $r1
+	move.d	$r4, [$r1]
+1:	moveq	1, $r0
+	move.d	romfs_in_flash, $r1
+	move.d	$r0, [$r1]
+
+	jump	_start_it	; Jump to cached code.
+	nop
+
+_inram:
+	;; Check if booting from NAND flash (in that case we just remember the offset
+	;; into the flash where cramfs should be).
+	move.d	REG_ADDR(config, regi_config, r_bootsel), $r0
+	move.d	[$r0], $r0
+	and.d	REG_MASK(config, r_bootsel, boot_mode), $r0
+	cmp.d	REG_STATE(config, r_bootsel, boot_mode, nand), $r0
+	bne	move_cramfs
+	moveq	1,$r0
+	move.d	crisv32_nand_boot, $r1
+	move.d	$r0, [$r1]
+	move.d	crisv32_nand_cramfs_offset, $r1
+	move.d	$r9, [$r1]
+	moveq	1, $r0
+	move.d	romfs_in_flash, $r1
+	move.d	$r0, [$r1]
+	jump	_start_it
+	nop
+
+move_cramfs:
+	;; Move the cramfs after BSS.
+	moveq	0, $r0
+	move.d	romfs_length, $r1
+	move.d	$r0, [$r1]
+
+#ifndef CONFIG_ETRAXFS_SIM
+	;; The kernel could have been unpacked to DRAM by the loader, but
+	;; the cramfs image could still be inte the flash immediately
+	;; following the compressed kernel image. The loaded passes the address
+	;; of the bute succeeding the last compressed byte in the flash in
+	;; register R9 when starting the kernel.
+	cmp.d	0x0ffffff8, $r9
+	bhs	_no_romfs_in_flash ; R9 points outside the flash area.
+	nop
+#else
+	ba _no_romfs_in_flash
+	nop
+#endif
+	move.d	[$r9], $r0	; cramfs_super.magic
+	cmp.d	CRAMFS_MAGIC, $r0
+	bne	_no_romfs_in_flash
+	nop
+
+	addoq	+4, $r9, $acr
+	move.d	[$acr], $r0
+	move.d	romfs_length, $r1
+	move.d	$r0, [$r1]
+	add.d	0xf0000000, $r9	; Add cached flash start in virtual memory.
+	move.d	romfs_start, $r1
+	move.d	$r9, [$r1]
+	moveq	1, $r0
+	move.d	romfs_in_flash, $r1
+	move.d	$r0, [$r1]
+
+	jump	_start_it	; Jump to cached code.
+	nop
+
+_no_romfs_in_flash:
+	;; Look for cramfs.
+#ifndef CONFIG_ETRAXFS_SIM
+	move.d	__vmlinux_end, $r0
+#else
+	move.d	__end, $r0
+#endif
+	move.d	[$r0], $r1
+	cmp.d	CRAMFS_MAGIC, $r1
+	bne	2f
+	nop
+
+	addoq	+4, $r0, $acr
+	move.d	[$acr], $r2
+	move.d	_end, $r1
+	move.d	romfs_start, $r3
+	move.d	$r1, [$r3]
+	move.d	romfs_length, $r3
+	move.d	$r2, [$r3]
+
+#ifndef CONFIG_ETRAXFS_SIM
+	add.d	$r2, $r0
+	add.d	$r2, $r1
+
+	lsrq	1, $r2		; Size is in bytes, we copy words.
+	addq    1, $r2
+1:
+	move.w	[$r0], $r3
+	move.w	$r3, [$r1]
+	subq	2, $r0
+	subq	2, $r1
+	subq	1, $r2
+	bne	1b
+	nop
+#endif
+
+2:
+	moveq	0, $r0
+	move.d	romfs_in_flash, $r1
+	move.d	$r0, [$r1]
+
+	jump	_start_it	; Jump to cached code.
+	nop
+
+_start_it:
+
+	;; Check if kernel command line is supplied
+	cmp.d	COMMAND_LINE_MAGIC, $r10
+	bne	no_command_line
+	nop
+
+	move.d	256, $r13
+	move.d  cris_command_line, $r10
+	or.d	0x80000000, $r11 ; Make it virtual
+1:
+	move.b  [$r11+], $r12
+	move.b  $r12, [$r10+]
+	subq	1, $r13
+	bne	1b
+	nop
+
+no_command_line:
+
+	;; The kernel stack contains a task structure for each task. This
+	;; the initial kernel stack is in the same page as the init_task,
+	;; but starts at the top of the page, i.e. + 8192 bytes.
+	move.d	init_thread_union + 8192, $sp
+	move.d	ebp_start, $r0	; Defined in linker-script.
+	move	$r0, $ebp
+	move.d	etrax_irv, $r1	; Set the exception base register and pointer.
+	move.d	$r0, [$r1]
+
+#ifndef CONFIG_ETRAXFS_SIM
+	;; Clear the BSS region from _bss_start to _end.
+	move.d	__bss_start, $r0
+	move.d	_end, $r1
+1:	clear.d	[$r0+]
+	cmp.d	$r1, $r0
+	blo 1b
+	nop
+#endif
+
+#ifdef CONFIG_ETRAXFS_SIM
+	/* Set the watchdog timeout to something big. Will be removed when */
+	/* watchdog can be disabled with command line option */
+	move.d  0x7fffffff, $r10
+	jsr     CPU_WATCHDOG_TIMEOUT
+	nop
+#endif
+
+	; Initialize registers to increase determinism
+	move.d __bss_start, $r0
+	movem [$r0], $r13
+
+	jump	start_kernel	; Jump to start_kernel() in init/main.c.
+	nop
+
+	.data
+etrax_irv:
+	.dword 0
+romfs_start:
+	.dword 0
+romfs_length:
+	.dword 0
+romfs_in_flash:
+	.dword 0
+crisv32_nand_boot:
+	.dword 0
+crisv32_nand_cramfs_offset:
+	.dword 0
+
+swapper_pg_dir = 0xc0002000
+
+	.section ".init.data", "aw"
+
+#include "../lib/hw_settings.S"
diff --git a/arch/cris/arch-v32/kernel/io.c b/arch/cris/arch-v32/kernel/io.c
new file mode 100644
index 00000000000..6bc9f263c3d
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/io.c
@@ -0,0 +1,154 @@
+/*
+ * Helper functions for I/O pins.
+ *
+ * Copyright (c) 2004 Axis Communications AB.
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <asm/io.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/hwregs/gio_defs.h>
+
+struct crisv32_ioport crisv32_ioports[] =
+{
+	{
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pa_oe),
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pa_dout),
+		(unsigned long*)REG_ADDR(gio, regi_gio, r_pa_din),
+		8
+	},
+	{
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pb_oe),
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pb_dout),
+		(unsigned long*)REG_ADDR(gio, regi_gio, r_pb_din),
+		18
+	},
+	{
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pc_oe),
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pc_dout),
+		(unsigned long*)REG_ADDR(gio, regi_gio, r_pc_din),
+		18
+	},
+	{
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pd_oe),
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pd_dout),
+		(unsigned long*)REG_ADDR(gio, regi_gio, r_pd_din),
+		18
+	},
+	{
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pe_oe),
+		(unsigned long*)REG_ADDR(gio, regi_gio, rw_pe_dout),
+		(unsigned long*)REG_ADDR(gio, regi_gio, r_pe_din),
+		18
+	}
+};
+
+#define NBR_OF_PORTS sizeof(crisv32_ioports)/sizeof(struct crisv32_ioport)
+
+struct crisv32_iopin crisv32_led1_green;
+struct crisv32_iopin crisv32_led1_red;
+struct crisv32_iopin crisv32_led2_green;
+struct crisv32_iopin crisv32_led2_red;
+struct crisv32_iopin crisv32_led3_green;
+struct crisv32_iopin crisv32_led3_red;
+
+/* Dummy port used when green LED and red LED is on the same bit */
+static unsigned long io_dummy;
+static struct crisv32_ioport dummy_port =
+{
+	&io_dummy,
+	&io_dummy,
+	&io_dummy,
+	18
+};
+static struct crisv32_iopin dummy_led =
+{
+	&dummy_port,
+	0
+};
+
+static int __init crisv32_io_init(void)
+{
+	int ret = 0;
+	/* Initialize LEDs */
+	ret += crisv32_io_get_name(&crisv32_led1_green, CONFIG_ETRAX_LED1G);
+	ret += crisv32_io_get_name(&crisv32_led1_red, CONFIG_ETRAX_LED1R);
+	ret += crisv32_io_get_name(&crisv32_led2_green, CONFIG_ETRAX_LED2G);
+	ret += crisv32_io_get_name(&crisv32_led2_red, CONFIG_ETRAX_LED2R);
+	ret += crisv32_io_get_name(&crisv32_led3_green, CONFIG_ETRAX_LED3G);
+	ret += crisv32_io_get_name(&crisv32_led3_red, CONFIG_ETRAX_LED3R);
+	crisv32_io_set_dir(&crisv32_led1_green, crisv32_io_dir_out);
+	crisv32_io_set_dir(&crisv32_led1_red, crisv32_io_dir_out);
+	crisv32_io_set_dir(&crisv32_led2_green, crisv32_io_dir_out);
+	crisv32_io_set_dir(&crisv32_led2_red, crisv32_io_dir_out);
+	crisv32_io_set_dir(&crisv32_led3_green, crisv32_io_dir_out);
+	crisv32_io_set_dir(&crisv32_led3_red, crisv32_io_dir_out);
+
+	if (!strcmp(CONFIG_ETRAX_LED1G, CONFIG_ETRAX_LED1R))
+		crisv32_led1_red = dummy_led;
+	if (!strcmp(CONFIG_ETRAX_LED2G, CONFIG_ETRAX_LED2R))
+		crisv32_led2_red = dummy_led;
+
+	return ret;
+}
+
+__initcall(crisv32_io_init);
+
+int crisv32_io_get(struct crisv32_iopin* iopin,
+                   unsigned int port, unsigned int pin)
+{
+	if (port > NBR_OF_PORTS)
+		return -EINVAL;
+	if (port > crisv32_ioports[port].pin_count)
+		return -EINVAL;
+
+	iopin->bit = 1 << pin;
+	iopin->port = &crisv32_ioports[port];
+
+	if (crisv32_pinmux_alloc(port, pin, pin, pinmux_gpio))
+		return -EIO;
+
+	return 0;
+}
+
+int crisv32_io_get_name(struct crisv32_iopin* iopin,
+                         char* name)
+{
+	int port;
+	int pin;
+
+	if (toupper(*name) == 'P')
+		name++;
+
+	if (toupper(*name) < 'A' || toupper(*name) > 'E')
+		return -EINVAL;
+
+	port = toupper(*name) - 'A';
+	name++;
+	pin = simple_strtoul(name, NULL, 10);
+
+	if (pin < 0 || pin > crisv32_ioports[port].pin_count)
+		return -EINVAL;
+
+	iopin->bit = 1 << pin;
+	iopin->port = &crisv32_ioports[port];
+
+	if (crisv32_pinmux_alloc(port, pin, pin, pinmux_gpio))
+		return -EIO;
+
+	return 0;
+}
+
+#ifdef CONFIG_PCI
+/* PCI I/O access stuff */
+struct cris_io_operations* cris_iops = NULL;
+EXPORT_SYMBOL(cris_iops);
+#endif
+
diff --git a/arch/cris/arch-v32/kernel/irq.c b/arch/cris/arch-v32/kernel/irq.c
new file mode 100644
index 00000000000..c78cc268513
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/irq.c
@@ -0,0 +1,413 @@
+/*
+ * Copyright (C) 2003, Axis Communications AB.
+ */
+
+#include <asm/irq.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/smp.h>
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/profile.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <linux/threads.h>
+#include <linux/spinlock.h>
+#include <linux/kernel_stat.h>
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/intr_vect.h>
+#include <asm/arch/hwregs/intr_vect_defs.h>
+
+#define CPU_FIXED -1
+
+/* IRQ masks (refer to comment for crisv32_do_multiple) */
+#define TIMER_MASK (1 << (TIMER_INTR_VECT - FIRST_IRQ))
+#ifdef CONFIG_ETRAX_KGDB
+#if defined(CONFIG_ETRAX_KGDB_PORT0)
+#define IGNOREMASK (1 << (SER0_INTR_VECT - FIRST_IRQ))
+#elif defined(CONFIG_ETRAX_KGDB_PORT1)
+#define IGNOREMASK (1 << (SER1_INTR_VECT - FIRST_IRQ))
+#elif defined(CONFIG_ETRAX_KGB_PORT2)
+#define IGNOREMASK (1 << (SER2_INTR_VECT - FIRST_IRQ))
+#elif defined(CONFIG_ETRAX_KGDB_PORT3)
+#define IGNOREMASK (1 << (SER3_INTR_VECT - FIRST_IRQ))
+#endif
+#endif
+
+DEFINE_SPINLOCK(irq_lock);
+
+struct cris_irq_allocation
+{
+  int cpu; /* The CPU to which the IRQ is currently allocated. */
+  cpumask_t mask; /* The CPUs to which the IRQ may be allocated. */
+};
+
+struct cris_irq_allocation irq_allocations[NR_IRQS] =
+  {[0 ... NR_IRQS - 1] = {0, CPU_MASK_ALL}};
+
+static unsigned long irq_regs[NR_CPUS] =
+{
+  regi_irq,
+#ifdef CONFIG_SMP
+  regi_irq2,
+#endif
+};
+
+unsigned long cpu_irq_counters[NR_CPUS];
+unsigned long irq_counters[NR_REAL_IRQS];
+
+/* From irq.c. */
+extern void weird_irq(void);
+
+/* From entry.S. */
+extern void system_call(void);
+extern void nmi_interrupt(void);
+extern void multiple_interrupt(void);
+extern void gdb_handle_exception(void);
+extern void i_mmu_refill(void);
+extern void i_mmu_invalid(void);
+extern void i_mmu_access(void);
+extern void i_mmu_execute(void);
+extern void d_mmu_refill(void);
+extern void d_mmu_invalid(void);
+extern void d_mmu_access(void);
+extern void d_mmu_write(void);
+
+/* From kgdb.c. */
+extern void kgdb_init(void);
+extern void breakpoint(void);
+
+/*
+ * Build the IRQ handler stubs using macros from irq.h. First argument is the
+ * IRQ number, the second argument is the corresponding bit in
+ * intr_rw_vect_mask found in asm/arch/hwregs/intr_vect_defs.h.
+ */
+BUILD_IRQ(0x31, (1 << 0))	/* memarb */
+BUILD_IRQ(0x32, (1 << 1))	/* gen_io */
+BUILD_IRQ(0x33, (1 << 2))	/* iop0 */
+BUILD_IRQ(0x34, (1 << 3))	/* iop1 */
+BUILD_IRQ(0x35, (1 << 4))	/* iop2 */
+BUILD_IRQ(0x36, (1 << 5))	/* iop3 */
+BUILD_IRQ(0x37, (1 << 6))	/* dma0 */
+BUILD_IRQ(0x38, (1 << 7))	/* dma1 */
+BUILD_IRQ(0x39, (1 << 8))	/* dma2 */
+BUILD_IRQ(0x3a, (1 << 9))	/* dma3 */
+BUILD_IRQ(0x3b, (1 << 10))	/* dma4 */
+BUILD_IRQ(0x3c, (1 << 11))	/* dma5 */
+BUILD_IRQ(0x3d, (1 << 12))	/* dma6 */
+BUILD_IRQ(0x3e, (1 << 13))	/* dma7 */
+BUILD_IRQ(0x3f, (1 << 14))	/* dma8 */
+BUILD_IRQ(0x40, (1 << 15))	/* dma9 */
+BUILD_IRQ(0x41, (1 << 16))	/* ata */
+BUILD_IRQ(0x42, (1 << 17))	/* sser0 */
+BUILD_IRQ(0x43, (1 << 18))	/* sser1 */
+BUILD_IRQ(0x44, (1 << 19))	/* ser0 */
+BUILD_IRQ(0x45, (1 << 20))	/* ser1 */
+BUILD_IRQ(0x46, (1 << 21))	/* ser2 */
+BUILD_IRQ(0x47, (1 << 22))	/* ser3 */
+BUILD_IRQ(0x48, (1 << 23))
+BUILD_IRQ(0x49, (1 << 24))	/* eth0 */
+BUILD_IRQ(0x4a, (1 << 25))	/* eth1 */
+BUILD_TIMER_IRQ(0x4b, (1 << 26))/* timer */
+BUILD_IRQ(0x4c, (1 << 27))	/* bif_arb */
+BUILD_IRQ(0x4d, (1 << 28))	/* bif_dma */
+BUILD_IRQ(0x4e, (1 << 29))	/* ext */
+BUILD_IRQ(0x4f, (1 << 29))	/* ipi */
+
+/* Pointers to the low-level handlers. */
+static void (*interrupt[NR_IRQS])(void) = {
+	IRQ0x31_interrupt, IRQ0x32_interrupt, IRQ0x33_interrupt,
+	IRQ0x34_interrupt, IRQ0x35_interrupt, IRQ0x36_interrupt,
+	IRQ0x37_interrupt, IRQ0x38_interrupt, IRQ0x39_interrupt,
+	IRQ0x3a_interrupt, IRQ0x3b_interrupt, IRQ0x3c_interrupt,
+	IRQ0x3d_interrupt, IRQ0x3e_interrupt, IRQ0x3f_interrupt,
+	IRQ0x40_interrupt, IRQ0x41_interrupt, IRQ0x42_interrupt,
+	IRQ0x43_interrupt, IRQ0x44_interrupt, IRQ0x45_interrupt,
+	IRQ0x46_interrupt, IRQ0x47_interrupt, IRQ0x48_interrupt,
+	IRQ0x49_interrupt, IRQ0x4a_interrupt, IRQ0x4b_interrupt,
+	IRQ0x4c_interrupt, IRQ0x4d_interrupt, IRQ0x4e_interrupt,
+	IRQ0x4f_interrupt
+};
+
+void
+block_irq(int irq, int cpu)
+{
+	int intr_mask;
+        unsigned long flags;
+
+        spin_lock_irqsave(&irq_lock, flags);
+        intr_mask = REG_RD_INT(intr_vect, irq_regs[cpu], rw_mask);
+
+	/* Remember; 1 let thru, 0 block. */
+	intr_mask &= ~(1 << (irq - FIRST_IRQ));
+
+	REG_WR_INT(intr_vect, irq_regs[cpu], rw_mask, intr_mask);
+        spin_unlock_irqrestore(&irq_lock, flags);
+}
+
+void
+unblock_irq(int irq, int cpu)
+{
+	int intr_mask;
+        unsigned long flags;
+
+        spin_lock_irqsave(&irq_lock, flags);
+        intr_mask = REG_RD_INT(intr_vect, irq_regs[cpu], rw_mask);
+
+	/* Remember; 1 let thru, 0 block. */
+	intr_mask |= (1 << (irq - FIRST_IRQ));
+
+	REG_WR_INT(intr_vect, irq_regs[cpu], rw_mask, intr_mask);
+        spin_unlock_irqrestore(&irq_lock, flags);
+}
+
+/* Find out which CPU the irq should be allocated to. */
+static int irq_cpu(int irq)
+{
+	int cpu;
+        unsigned long flags;
+
+        spin_lock_irqsave(&irq_lock, flags);
+        cpu = irq_allocations[irq - FIRST_IRQ].cpu;
+
+	/* Fixed interrupts stay on the local CPU. */
+	if (cpu == CPU_FIXED)
+        {
+		spin_unlock_irqrestore(&irq_lock, flags);
+		return smp_processor_id();
+        }
+
+
+	/* Let the interrupt stay if possible */
+	if (cpu_isset(cpu, irq_allocations[irq - FIRST_IRQ].mask))
+		goto out;
+
+	/* IRQ must be moved to another CPU. */
+	cpu = first_cpu(irq_allocations[irq - FIRST_IRQ].mask);
+	irq_allocations[irq - FIRST_IRQ].cpu = cpu;
+out:
+	spin_unlock_irqrestore(&irq_lock, flags);
+	return cpu;
+}
+
+void
+mask_irq(int irq)
+{
+	int cpu;
+
+	for (cpu = 0; cpu < NR_CPUS; cpu++)
+		block_irq(irq, cpu);
+}
+
+void
+unmask_irq(int irq)
+{
+	unblock_irq(irq, irq_cpu(irq));
+}
+
+
+static unsigned int startup_crisv32_irq(unsigned int irq)
+{
+	unmask_irq(irq);
+	return 0;
+}
+
+static void shutdown_crisv32_irq(unsigned int irq)
+{
+	mask_irq(irq);
+}
+
+static void enable_crisv32_irq(unsigned int irq)
+{
+	unmask_irq(irq);
+}
+
+static void disable_crisv32_irq(unsigned int irq)
+{
+	mask_irq(irq);
+}
+
+static void ack_crisv32_irq(unsigned int irq)
+{
+}
+
+static void end_crisv32_irq(unsigned int irq)
+{
+}
+
+void set_affinity_crisv32_irq(unsigned int irq, cpumask_t dest)
+{
+	unsigned long flags;
+	spin_lock_irqsave(&irq_lock, flags);
+	irq_allocations[irq - FIRST_IRQ].mask = dest;
+	spin_unlock_irqrestore(&irq_lock, flags);
+}
+
+static struct hw_interrupt_type crisv32_irq_type = {
+	.typename =    "CRISv32",
+	.startup =     startup_crisv32_irq,
+	.shutdown =    shutdown_crisv32_irq,
+	.enable =      enable_crisv32_irq,
+	.disable =     disable_crisv32_irq,
+	.ack =         ack_crisv32_irq,
+	.end =         end_crisv32_irq,
+	.set_affinity = set_affinity_crisv32_irq
+};
+
+void
+set_exception_vector(int n, irqvectptr addr)
+{
+	etrax_irv->v[n] = (irqvectptr) addr;
+}
+
+extern void do_IRQ(int irq, struct pt_regs * regs);
+
+void
+crisv32_do_IRQ(int irq, int block, struct pt_regs* regs)
+{
+	/* Interrupts that may not be moved to another CPU and
+         * are SA_INTERRUPT may skip blocking. This is currently
+         * only valid for the timer IRQ and the IPI and is used
+         * for the timer interrupt to avoid watchdog starvation.
+         */
+	if (!block) {
+		do_IRQ(irq, regs);
+		return;
+	}
+
+	block_irq(irq, smp_processor_id());
+	do_IRQ(irq, regs);
+
+	unblock_irq(irq, irq_cpu(irq));
+}
+
+/* If multiple interrupts occur simultaneously we get a multiple
+ * interrupt from the CPU and software has to sort out which
+ * interrupts that happened. There are two special cases here:
+ *
+ * 1. Timer interrupts may never be blocked because of the
+ *    watchdog (refer to comment in include/asr/arch/irq.h)
+ * 2. GDB serial port IRQs are unhandled here and will be handled
+ *    as a single IRQ when it strikes again because the GDB
+ *    stubb wants to save the registers in its own fashion.
+ */
+void
+crisv32_do_multiple(struct pt_regs* regs)
+{
+	int cpu;
+	int mask;
+	int masked;
+	int bit;
+
+	cpu = smp_processor_id();
+
+	/* An extra irq_enter here to prevent softIRQs to run after
+         * each do_IRQ. This will decrease the interrupt latency.
+	 */
+	irq_enter();
+
+	/* Get which IRQs that happend. */
+	masked = REG_RD_INT(intr_vect, irq_regs[cpu], r_masked_vect);
+
+	/* Calculate new IRQ mask with these IRQs disabled. */
+	mask = REG_RD_INT(intr_vect, irq_regs[cpu], rw_mask);
+	mask &= ~masked;
+
+	/* Timer IRQ is never masked */
+	if (masked & TIMER_MASK)
+		mask |= TIMER_MASK;
+
+	/* Block all the IRQs */
+	REG_WR_INT(intr_vect, irq_regs[cpu], rw_mask, mask);
+
+	/* Check for timer IRQ and handle it special. */
+	if (masked & TIMER_MASK) {
+	        masked &= ~TIMER_MASK;
+		do_IRQ(TIMER_INTR_VECT, regs);
+	}
+
+#ifdef IGNORE_MASK
+	/* Remove IRQs that can't be handled as multiple. */
+	masked &= ~IGNORE_MASK;
+#endif
+
+	/* Handle the rest of the IRQs. */
+	for (bit = 0; bit < 32; bit++)
+	{
+		if (masked & (1 << bit))
+			do_IRQ(bit + FIRST_IRQ, regs);
+	}
+
+	/* Unblock all the IRQs. */
+	mask = REG_RD_INT(intr_vect, irq_regs[cpu], rw_mask);
+	mask |= masked;
+	REG_WR_INT(intr_vect, irq_regs[cpu], rw_mask, mask);
+
+	/* This irq_exit() will trigger the soft IRQs. */
+	irq_exit();
+}
+
+/*
+ * This is called by start_kernel. It fixes the IRQ masks and setup the
+ * interrupt vector table to point to bad_interrupt pointers.
+ */
+void __init
+init_IRQ(void)
+{
+	int i;
+	int j;
+	reg_intr_vect_rw_mask vect_mask = {0};
+
+	/* Clear all interrupts masks. */
+	REG_WR(intr_vect, regi_irq, rw_mask, vect_mask);
+
+	for (i = 0; i < 256; i++)
+		etrax_irv->v[i] = weird_irq;
+
+	/* Point all IRQ's to bad handlers. */
+	for (i = FIRST_IRQ, j = 0; j < NR_IRQS; i++, j++) {
+		irq_desc[j].handler = &crisv32_irq_type;
+		set_exception_vector(i, interrupt[j]);
+	}
+
+        /* Mark Timer and IPI IRQs as CPU local */
+	irq_allocations[TIMER_INTR_VECT - FIRST_IRQ].cpu = CPU_FIXED;
+	irq_desc[TIMER_INTR_VECT].status |= IRQ_PER_CPU;
+	irq_allocations[IPI_INTR_VECT - FIRST_IRQ].cpu = CPU_FIXED;
+	irq_desc[IPI_INTR_VECT].status |= IRQ_PER_CPU;
+
+	set_exception_vector(0x00, nmi_interrupt);
+	set_exception_vector(0x30, multiple_interrupt);
+
+	/* Set up handler for various MMU bus faults. */
+	set_exception_vector(0x04, i_mmu_refill);
+	set_exception_vector(0x05, i_mmu_invalid);
+	set_exception_vector(0x06, i_mmu_access);
+	set_exception_vector(0x07, i_mmu_execute);
+	set_exception_vector(0x08, d_mmu_refill);
+	set_exception_vector(0x09, d_mmu_invalid);
+	set_exception_vector(0x0a, d_mmu_access);
+	set_exception_vector(0x0b, d_mmu_write);
+
+	/* The system-call trap is reached by "break 13". */
+	set_exception_vector(0x1d, system_call);
+
+	/* Exception handlers for debugging, both user-mode and kernel-mode. */
+
+	/* Break 8. */
+	set_exception_vector(0x18, gdb_handle_exception);
+	/* Hardware single step. */
+	set_exception_vector(0x3, gdb_handle_exception);
+	/* Hardware breakpoint. */
+	set_exception_vector(0xc, gdb_handle_exception);
+
+#ifdef CONFIG_ETRAX_KGDB
+	kgdb_init();
+	/* Everything is set up; now trap the kernel. */
+	breakpoint();
+#endif
+}
+
diff --git a/arch/cris/arch-v32/kernel/kgdb.c b/arch/cris/arch-v32/kernel/kgdb.c
new file mode 100644
index 00000000000..480e56348be
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/kgdb.c
@@ -0,0 +1,1660 @@
+/*
+ *  arch/cris/arch-v32/kernel/kgdb.c
+ *
+ *  CRIS v32 version by Orjan Friberg, Axis Communications AB.
+ *
+ *  S390 version
+ *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
+ *
+ *  Originally written by Glenn Engel, Lake Stevens Instrument Division
+ *
+ *  Contributed by HP Systems
+ *
+ *  Modified for SPARC by Stu Grossman, Cygnus Support.
+ *
+ *  Modified for Linux/MIPS (and MIPS in general) by Andreas Busse
+ *  Send complaints, suggestions etc. to <andy@waldorf-gmbh.de>
+ *
+ *  Copyright (C) 1995 Andreas Busse
+ */
+
+/* FIXME: Check the documentation. */
+
+/*
+ *  kgdb usage notes:
+ *  -----------------
+ *
+ * If you select CONFIG_ETRAX_KGDB in the configuration, the kernel will be
+ * built with different gcc flags: "-g" is added to get debug infos, and
+ * "-fomit-frame-pointer" is omitted to make debugging easier. Since the
+ * resulting kernel will be quite big (approx. > 7 MB), it will be stripped
+ * before compresion. Such a kernel will behave just as usually, except if
+ * given a "debug=<device>" command line option. (Only serial devices are
+ * allowed for <device>, i.e. no printers or the like; possible values are
+ * machine depedend and are the same as for the usual debug device, the one
+ * for logging kernel messages.) If that option is given and the device can be
+ * initialized, the kernel will connect to the remote gdb in trap_init(). The
+ * serial parameters are fixed to 8N1 and 115200 bps, for easyness of
+ * implementation.
+ *
+ * To start a debugging session, start that gdb with the debugging kernel
+ * image (the one with the symbols, vmlinux.debug) named on the command line.
+ * This file will be used by gdb to get symbol and debugging infos about the
+ * kernel. Next, select remote debug mode by
+ *    target remote <device>
+ * where <device> is the name of the serial device over which the debugged
+ * machine is connected. Maybe you have to adjust the baud rate by
+ *    set remotebaud <rate>
+ * or also other parameters with stty:
+ *    shell stty ... </dev/...
+ * If the kernel to debug has already booted, it waited for gdb and now
+ * connects, and you'll see a breakpoint being reported. If the kernel isn't
+ * running yet, start it now. The order of gdb and the kernel doesn't matter.
+ * Another thing worth knowing about in the getting-started phase is how to
+ * debug the remote protocol itself. This is activated with
+ *    set remotedebug 1
+ * gdb will then print out each packet sent or received. You'll also get some
+ * messages about the gdb stub on the console of the debugged machine.
+ *
+ * If all that works, you can use lots of the usual debugging techniques on
+ * the kernel, e.g. inspecting and changing variables/memory, setting
+ * breakpoints, single stepping and so on. It's also possible to interrupt the
+ * debugged kernel by pressing C-c in gdb. Have fun! :-)
+ *
+ * The gdb stub is entered (and thus the remote gdb gets control) in the
+ * following situations:
+ *
+ *  - If breakpoint() is called. This is just after kgdb initialization, or if
+ *    a breakpoint() call has been put somewhere into the kernel source.
+ *    (Breakpoints can of course also be set the usual way in gdb.)
+ *    In eLinux, we call breakpoint() in init/main.c after IRQ initialization.
+ *
+ *  - If there is a kernel exception, i.e. bad_super_trap() or die_if_kernel()
+ *    are entered. All the CPU exceptions are mapped to (more or less..., see
+ *    the hard_trap_info array below) appropriate signal, which are reported
+ *    to gdb. die_if_kernel() is usually called after some kind of access
+ *    error and thus is reported as SIGSEGV.
+ *
+ *  - When panic() is called. This is reported as SIGABRT.
+ *
+ *  - If C-c is received over the serial line, which is treated as
+ *    SIGINT.
+ *
+ * Of course, all these signals are just faked for gdb, since there is no
+ * signal concept as such for the kernel. It also isn't possible --obviously--
+ * to set signal handlers from inside gdb, or restart the kernel with a
+ * signal.
+ *
+ * Current limitations:
+ *
+ *  - While the kernel is stopped, interrupts are disabled for safety reasons
+ *    (i.e., variables not changing magically or the like). But this also
+ *    means that the clock isn't running anymore, and that interrupts from the
+ *    hardware may get lost/not be served in time. This can cause some device
+ *    errors...
+ *
+ *  - When single-stepping, only one instruction of the current thread is
+ *    executed, but interrupts are allowed for that time and will be serviced
+ *    if pending. Be prepared for that.
+ *
+ *  - All debugging happens in kernel virtual address space. There's no way to
+ *    access physical memory not mapped in kernel space, or to access user
+ *    space. A way to work around this is using get_user_long & Co. in gdb
+ *    expressions, but only for the current process.
+ *
+ *  - Interrupting the kernel only works if interrupts are currently allowed,
+ *    and the interrupt of the serial line isn't blocked by some other means
+ *    (IPL too high, disabled, ...)
+ *
+ *  - The gdb stub is currently not reentrant, i.e. errors that happen therein
+ *    (e.g. accessing invalid memory) may not be caught correctly. This could
+ *    be removed in future by introducing a stack of struct registers.
+ *
+ */
+
+/*
+ *  To enable debugger support, two things need to happen.  One, a
+ *  call to kgdb_init() is necessary in order to allow any breakpoints
+ *  or error conditions to be properly intercepted and reported to gdb.
+ *  Two, a breakpoint needs to be generated to begin communication.  This
+ *  is most easily accomplished by a call to breakpoint().
+ *
+ *    The following gdb commands are supported:
+ *
+ * command          function                               Return value
+ *
+ *    g             return the value of the CPU registers  hex data or ENN
+ *    G             set the value of the CPU registers     OK or ENN
+ *
+ *    mAA..AA,LLLL  Read LLLL bytes at address AA..AA      hex data or ENN
+ *    MAA..AA,LLLL: Write LLLL bytes at address AA.AA      OK or ENN
+ *
+ *    c             Resume at current address              SNN   ( signal NN)
+ *    cAA..AA       Continue at address AA..AA             SNN
+ *
+ *    s             Step one instruction                   SNN
+ *    sAA..AA       Step one instruction from AA..AA       SNN
+ *
+ *    k             kill
+ *
+ *    ?             What was the last sigval ?             SNN   (signal NN)
+ *
+ *    bBB..BB	    Set baud rate to BB..BB		   OK or BNN, then sets
+ *							   baud rate
+ *
+ * All commands and responses are sent with a packet which includes a
+ * checksum.  A packet consists of
+ *
+ * $<packet info>#<checksum>.
+ *
+ * where
+ * <packet info> :: <characters representing the command or response>
+ * <checksum>    :: < two hex digits computed as modulo 256 sum of <packetinfo>>
+ *
+ * When a packet is received, it is first acknowledged with either '+' or '-'.
+ * '+' indicates a successful transfer.  '-' indicates a failed transfer.
+ *
+ * Example:
+ *
+ * Host:                  Reply:
+ * $m0,10#2a               +$00010203040506070809101112131415#42
+ *
+ */
+
+
+#include <linux/string.h>
+#include <linux/signal.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/linkage.h>
+#include <linux/reboot.h>
+
+#include <asm/setup.h>
+#include <asm/ptrace.h>
+
+#include <asm/irq.h>
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/intr_vect_defs.h>
+#include <asm/arch/hwregs/ser_defs.h>
+
+/* From entry.S. */
+extern void gdb_handle_exception(void);
+/* From kgdb_asm.S. */
+extern void kgdb_handle_exception(void);
+
+static int kgdb_started = 0;
+
+/********************************* Register image ****************************/
+
+typedef
+struct register_image
+{
+	                      /* Offset */
+	unsigned int   r0;    /* 0x00 */
+	unsigned int   r1;    /* 0x04 */
+	unsigned int   r2;    /* 0x08 */
+	unsigned int   r3;    /* 0x0C */
+	unsigned int   r4;    /* 0x10 */
+	unsigned int   r5;    /* 0x14 */
+	unsigned int   r6;    /* 0x18 */
+	unsigned int   r7;    /* 0x1C */
+	unsigned int   r8;    /* 0x20; Frame pointer (if any) */
+	unsigned int   r9;    /* 0x24 */
+	unsigned int   r10;   /* 0x28 */
+	unsigned int   r11;   /* 0x2C */
+	unsigned int   r12;   /* 0x30 */
+	unsigned int   r13;   /* 0x34 */
+	unsigned int   sp;    /* 0x38; R14, Stack pointer */
+	unsigned int   acr;   /* 0x3C; R15, Address calculation register. */
+
+	unsigned char  bz;    /* 0x40; P0, 8-bit zero register */
+	unsigned char  vr;    /* 0x41; P1, Version register (8-bit) */
+	unsigned int   pid;   /* 0x42; P2, Process ID */
+	unsigned char  srs;   /* 0x46; P3, Support register select (8-bit) */
+        unsigned short wz;    /* 0x47; P4, 16-bit zero register */
+	unsigned int   exs;   /* 0x49; P5, Exception status */
+	unsigned int   eda;   /* 0x4D; P6, Exception data address */
+	unsigned int   mof;   /* 0x51; P7, Multiply overflow register */
+	unsigned int   dz;    /* 0x55; P8, 32-bit zero register */
+	unsigned int   ebp;   /* 0x59; P9, Exception base pointer */
+	unsigned int   erp;   /* 0x5D; P10, Exception return pointer. Contains the PC we are interested in. */
+	unsigned int   srp;   /* 0x61; P11, Subroutine return pointer */
+	unsigned int   nrp;   /* 0x65; P12, NMI return pointer */
+	unsigned int   ccs;   /* 0x69; P13, Condition code stack */
+	unsigned int   usp;   /* 0x6D; P14, User mode stack pointer */
+	unsigned int   spc;   /* 0x71; P15, Single step PC */
+	unsigned int   pc;    /* 0x75; Pseudo register (for the most part set to ERP). */
+
+} registers;
+
+typedef
+struct bp_register_image
+{
+	/* Support register bank 0. */
+	unsigned int   s0_0;
+	unsigned int   s1_0;
+	unsigned int   s2_0;
+	unsigned int   s3_0;
+	unsigned int   s4_0;
+	unsigned int   s5_0;
+	unsigned int   s6_0;
+	unsigned int   s7_0;
+	unsigned int   s8_0;
+	unsigned int   s9_0;
+	unsigned int   s10_0;
+	unsigned int   s11_0;
+	unsigned int   s12_0;
+	unsigned int   s13_0;
+	unsigned int   s14_0;
+	unsigned int   s15_0;
+
+	/* Support register bank 1. */
+	unsigned int   s0_1;
+	unsigned int   s1_1;
+	unsigned int   s2_1;
+	unsigned int   s3_1;
+	unsigned int   s4_1;
+	unsigned int   s5_1;
+	unsigned int   s6_1;
+	unsigned int   s7_1;
+	unsigned int   s8_1;
+	unsigned int   s9_1;
+	unsigned int   s10_1;
+	unsigned int   s11_1;
+	unsigned int   s12_1;
+	unsigned int   s13_1;
+	unsigned int   s14_1;
+	unsigned int   s15_1;
+
+	/* Support register bank 2. */
+	unsigned int   s0_2;
+	unsigned int   s1_2;
+	unsigned int   s2_2;
+	unsigned int   s3_2;
+	unsigned int   s4_2;
+	unsigned int   s5_2;
+	unsigned int   s6_2;
+	unsigned int   s7_2;
+	unsigned int   s8_2;
+	unsigned int   s9_2;
+	unsigned int   s10_2;
+	unsigned int   s11_2;
+	unsigned int   s12_2;
+	unsigned int   s13_2;
+	unsigned int   s14_2;
+	unsigned int   s15_2;
+
+	/* Support register bank 3. */
+	unsigned int   s0_3; /* BP_CTRL */
+	unsigned int   s1_3; /* BP_I0_START */
+	unsigned int   s2_3; /* BP_I0_END */
+	unsigned int   s3_3; /* BP_D0_START */
+	unsigned int   s4_3; /* BP_D0_END */
+	unsigned int   s5_3; /* BP_D1_START */
+	unsigned int   s6_3; /* BP_D1_END */
+	unsigned int   s7_3; /* BP_D2_START */
+	unsigned int   s8_3; /* BP_D2_END */
+	unsigned int   s9_3; /* BP_D3_START */
+	unsigned int   s10_3; /* BP_D3_END */
+	unsigned int   s11_3; /* BP_D4_START */
+	unsigned int   s12_3; /* BP_D4_END */
+	unsigned int   s13_3; /* BP_D5_START */
+	unsigned int   s14_3; /* BP_D5_END */
+	unsigned int   s15_3; /* BP_RESERVED */
+
+} support_registers;
+
+enum register_name
+{
+	R0,  R1,  R2,  R3,
+	R4,  R5,  R6,  R7,
+	R8,  R9,  R10, R11,
+	R12, R13, SP,  ACR,
+
+	BZ,  VR,  PID, SRS,
+	WZ,  EXS, EDA, MOF,
+	DZ,  EBP, ERP, SRP,
+	NRP, CCS, USP, SPC,
+	PC,
+
+	S0,  S1,  S2,  S3,
+	S4,  S5,  S6,  S7,
+	S8,  S9,  S10, S11,
+	S12, S13, S14, S15
+
+};
+
+/* The register sizes of the registers in register_name. An unimplemented register
+   is designated by size 0 in this array. */
+static int register_size[] =
+{
+	4, 4, 4, 4,
+	4, 4, 4, 4,
+	4, 4, 4, 4,
+	4, 4, 4, 4,
+
+	1, 1, 4, 1,
+	2, 4, 4, 4,
+	4, 4, 4, 4,
+	4, 4, 4, 4,
+
+	4,
+
+	4, 4, 4, 4,
+	4, 4, 4, 4,
+	4, 4, 4, 4,
+	4, 4, 4
+
+};
+
+/* Contains the register image of the kernel.
+   (Global so that they can be reached from assembler code.) */
+registers reg;
+support_registers sreg;
+
+/************** Prototypes for local library functions ***********************/
+
+/* Copy of strcpy from libc. */
+static char *gdb_cris_strcpy(char *s1, const char *s2);
+
+/* Copy of strlen from libc. */
+static int gdb_cris_strlen(const char *s);
+
+/* Copy of memchr from libc. */
+static void *gdb_cris_memchr(const void *s, int c, int n);
+
+/* Copy of strtol from libc. Does only support base 16. */
+static int gdb_cris_strtol(const char *s, char **endptr, int base);
+
+/********************** Prototypes for local functions. **********************/
+
+/* Write a value to a specified register regno in the register image
+   of the current thread. */
+static int write_register(int regno, char *val);
+
+/* Read a value from a specified register in the register image. Returns the
+   status of the read operation. The register value is returned in valptr. */
+static int read_register(char regno, unsigned int *valptr);
+
+/* Serial port, reads one character. ETRAX 100 specific. from debugport.c */
+int getDebugChar(void);
+
+#ifdef CONFIG_ETRAXFS_SIM
+int getDebugChar(void)
+{
+  return socketread();
+}
+#endif
+
+/* Serial port, writes one character. ETRAX 100 specific. from debugport.c */
+void putDebugChar(int val);
+
+#ifdef CONFIG_ETRAXFS_SIM
+void putDebugChar(int val)
+{
+  socketwrite((char *)&val, 1);
+}
+#endif
+
+/* Returns the character equivalent of a nibble, bit 7, 6, 5, and 4 of a byte,
+   represented by int x. */
+static char highhex(int x);
+
+/* Returns the character equivalent of a nibble, bit 3, 2, 1, and 0 of a byte,
+   represented by int x. */
+static char lowhex(int x);
+
+/* Returns the integer equivalent of a hexadecimal character. */
+static int hex(char ch);
+
+/* Convert the memory, pointed to by mem into hexadecimal representation.
+   Put the result in buf, and return a pointer to the last character
+   in buf (null). */
+static char *mem2hex(char *buf, unsigned char *mem, int count);
+
+/* Convert the array, in hexadecimal representation, pointed to by buf into
+   binary representation. Put the result in mem, and return a pointer to
+   the character after the last byte written. */
+static unsigned char *hex2mem(unsigned char *mem, char *buf, int count);
+
+/* Put the content of the array, in binary representation, pointed to by buf
+   into memory pointed to by mem, and return a pointer to
+   the character after the last byte written. */
+static unsigned char *bin2mem(unsigned char *mem, unsigned char *buf, int count);
+
+/* Await the sequence $<data>#<checksum> and store <data> in the array buffer
+   returned. */
+static void getpacket(char *buffer);
+
+/* Send $<data>#<checksum> from the <data> in the array buffer. */
+static void putpacket(char *buffer);
+
+/* Build and send a response packet in order to inform the host the
+   stub is stopped. */
+static void stub_is_stopped(int sigval);
+
+/* All expected commands are sent from remote.c. Send a response according
+   to the description in remote.c. Not static since it needs to be reached
+   from assembler code. */
+void handle_exception(int sigval);
+
+/* Performs a complete re-start from scratch. ETRAX specific. */
+static void kill_restart(void);
+
+/******************** Prototypes for global functions. ***********************/
+
+/* The string str is prepended with the GDB printout token and sent. */
+void putDebugString(const unsigned char *str, int len);
+
+/* A static breakpoint to be used at startup. */
+void breakpoint(void);
+
+/* Avoid warning as the internal_stack is not used in the C-code. */
+#define USEDVAR(name)    { if (name) { ; } }
+#define USEDFUN(name) { void (*pf)(void) = (void *)name; USEDVAR(pf) }
+
+/********************************** Packet I/O ******************************/
+/* BUFMAX defines the maximum number of characters in
+   inbound/outbound buffers */
+/* FIXME: How do we know it's enough? */
+#define BUFMAX 512
+
+/* Run-length encoding maximum length. Send 64 at most. */
+#define RUNLENMAX 64
+
+/* Definition of all valid hexadecimal characters */
+static const char hexchars[] = "0123456789abcdef";
+
+/* The inbound/outbound buffers used in packet I/O */
+static char input_buffer[BUFMAX];
+static char output_buffer[BUFMAX];
+
+/* Error and warning messages. */
+enum error_type
+{
+	SUCCESS, E01, E02, E03, E04, E05, E06,
+};
+
+static char *error_message[] =
+{
+	"",
+	"E01 Set current or general thread - H[c,g] - internal error.",
+	"E02 Change register content - P - cannot change read-only register.",
+	"E03 Thread is not alive.", /* T, not used. */
+	"E04 The command is not supported - [s,C,S,!,R,d,r] - internal error.",
+	"E05 Change register content - P - the register is not implemented..",
+	"E06 Change memory content - M - internal error.",
+};
+
+/********************************** Breakpoint *******************************/
+/* Use an internal stack in the breakpoint and interrupt response routines.
+   FIXME: How do we know the size of this stack is enough?
+   Global so it can be reached from assembler code. */
+#define INTERNAL_STACK_SIZE 1024
+char internal_stack[INTERNAL_STACK_SIZE];
+
+/* Due to the breakpoint return pointer, a state variable is needed to keep
+   track of whether it is a static (compiled) or dynamic (gdb-invoked)
+   breakpoint to be handled. A static breakpoint uses the content of register
+   ERP as it is whereas a dynamic breakpoint requires subtraction with 2
+   in order to execute the instruction. The first breakpoint is static; all
+   following are assumed to be dynamic. */
+static int dynamic_bp = 0;
+
+/********************************* String library ****************************/
+/* Single-step over library functions creates trap loops. */
+
+/* Copy char s2[] to s1[]. */
+static char*
+gdb_cris_strcpy(char *s1, const char *s2)
+{
+	char *s = s1;
+
+	for (s = s1; (*s++ = *s2++) != '\0'; )
+		;
+	return s1;
+}
+
+/* Find length of s[]. */
+static int
+gdb_cris_strlen(const char *s)
+{
+	const char *sc;
+
+	for (sc = s; *sc != '\0'; sc++)
+		;
+	return (sc - s);
+}
+
+/* Find first occurrence of c in s[n]. */
+static void*
+gdb_cris_memchr(const void *s, int c, int n)
+{
+	const unsigned char uc = c;
+	const unsigned char *su;
+
+	for (su = s; 0 < n; ++su, --n)
+		if (*su == uc)
+			return (void *)su;
+	return NULL;
+}
+/******************************* Standard library ****************************/
+/* Single-step over library functions creates trap loops. */
+/* Convert string to long. */
+static int
+gdb_cris_strtol(const char *s, char **endptr, int base)
+{
+	char *s1;
+	char *sd;
+	int x = 0;
+
+	for (s1 = (char*)s; (sd = gdb_cris_memchr(hexchars, *s1, base)) != NULL; ++s1)
+		x = x * base + (sd - hexchars);
+
+        if (endptr) {
+                /* Unconverted suffix is stored in endptr unless endptr is NULL. */
+                *endptr = s1;
+        }
+
+	return x;
+}
+
+/********************************* Register image ****************************/
+
+/* Write a value to a specified register in the register image of the current
+   thread. Returns status code SUCCESS, E02 or E05. */
+static int
+write_register(int regno, char *val)
+{
+	int status = SUCCESS;
+
+        if (regno >= R0 && regno <= ACR) {
+		/* Consecutive 32-bit registers. */
+		hex2mem((unsigned char *)&reg.r0 + (regno - R0) * sizeof(unsigned int),
+			val, sizeof(unsigned int));
+
+	} else if (regno == BZ || regno == VR || regno == WZ || regno == DZ) {
+		/* Read-only registers. */
+		status = E02;
+
+	} else if (regno == PID) {
+		/* 32-bit register. (Even though we already checked SRS and WZ, we cannot
+		   combine this with the EXS - SPC write since SRS and WZ have different size.) */
+		hex2mem((unsigned char *)&reg.pid, val, sizeof(unsigned int));
+
+	} else if (regno == SRS) {
+		/* 8-bit register. */
+		hex2mem((unsigned char *)&reg.srs, val, sizeof(unsigned char));
+
+	} else if (regno >= EXS && regno <= SPC) {
+		/* Consecutive 32-bit registers. */
+		hex2mem((unsigned char *)&reg.exs + (regno - EXS) * sizeof(unsigned int),
+			 val, sizeof(unsigned int));
+
+       } else if (regno == PC) {
+               /* Pseudo-register. Treat as read-only. */
+               status = E02;
+
+       } else if (regno >= S0 && regno <= S15) {
+               /* 32-bit registers. */
+               hex2mem((unsigned char *)&sreg.s0_0 + (reg.srs * 16 * sizeof(unsigned int)) + (regno - S0) * sizeof(unsigned int), val, sizeof(unsigned int));
+	} else {
+		/* Non-existing register. */
+		status = E05;
+	}
+	return status;
+}
+
+/* Read a value from a specified register in the register image. Returns the
+   value in the register or -1 for non-implemented registers. */
+static int
+read_register(char regno, unsigned int *valptr)
+{
+	int status = SUCCESS;
+
+	/* We read the zero registers from the register struct (instead of just returning 0)
+	   to catch errors. */
+
+	if (regno >= R0 && regno <= ACR) {
+		/* Consecutive 32-bit registers. */
+		*valptr = *(unsigned int *)((char *)&reg.r0 + (regno - R0) * sizeof(unsigned int));
+
+	} else if (regno == BZ || regno == VR) {
+		/* Consecutive 8-bit registers. */
+		*valptr = (unsigned int)(*(unsigned char *)
+                                         ((char *)&reg.bz + (regno - BZ) * sizeof(char)));
+
+	} else if (regno == PID) {
+		/* 32-bit register. */
+		*valptr =  *(unsigned int *)((char *)&reg.pid);
+
+	} else if (regno == SRS) {
+		/* 8-bit register. */
+		*valptr = (unsigned int)(*(unsigned char *)((char *)&reg.srs));
+
+	} else if (regno == WZ) {
+		/* 16-bit register. */
+		*valptr = (unsigned int)(*(unsigned short *)(char *)&reg.wz);
+
+	} else if (regno >= EXS && regno <= PC) {
+		/* Consecutive 32-bit registers. */
+		*valptr = *(unsigned int *)((char *)&reg.exs + (regno - EXS) * sizeof(unsigned int));
+
+	} else if (regno >= S0 && regno <= S15) {
+		/* Consecutive 32-bit registers, located elsewhere. */
+		*valptr = *(unsigned int *)((char *)&sreg.s0_0 + (reg.srs * 16 * sizeof(unsigned int)) + (regno - S0) * sizeof(unsigned int));
+
+	} else {
+		/* Non-existing register. */
+		status = E05;
+	}
+	return status;
+
+}
+
+/********************************** Packet I/O ******************************/
+/* Returns the character equivalent of a nibble, bit 7, 6, 5, and 4 of a byte,
+   represented by int x. */
+static inline char
+highhex(int x)
+{
+	return hexchars[(x >> 4) & 0xf];
+}
+
+/* Returns the character equivalent of a nibble, bit 3, 2, 1, and 0 of a byte,
+   represented by int x. */
+static inline char
+lowhex(int x)
+{
+	return hexchars[x & 0xf];
+}
+
+/* Returns the integer equivalent of a hexadecimal character. */
+static int
+hex(char ch)
+{
+	if ((ch >= 'a') && (ch <= 'f'))
+		return (ch - 'a' + 10);
+	if ((ch >= '0') && (ch <= '9'))
+		return (ch - '0');
+	if ((ch >= 'A') && (ch <= 'F'))
+		return (ch - 'A' + 10);
+	return -1;
+}
+
+/* Convert the memory, pointed to by mem into hexadecimal representation.
+   Put the result in buf, and return a pointer to the last character
+   in buf (null). */
+
+static char *
+mem2hex(char *buf, unsigned char *mem, int count)
+{
+	int i;
+	int ch;
+
+        if (mem == NULL) {
+		/* Invalid address, caught by 'm' packet handler. */
+                for (i = 0; i < count; i++) {
+                        *buf++ = '0';
+                        *buf++ = '0';
+                }
+        } else {
+                /* Valid mem address. */
+		for (i = 0; i < count; i++) {
+			ch = *mem++;
+			*buf++ = highhex (ch);
+			*buf++ = lowhex (ch);
+		}
+        }
+        /* Terminate properly. */
+	*buf = '\0';
+	return buf;
+}
+
+/* Same as mem2hex, but puts it in network byte order. */
+static char *
+mem2hex_nbo(char *buf, unsigned char *mem, int count)
+{
+	int i;
+	int ch;
+
+	mem += count - 1;
+	for (i = 0; i < count; i++) {
+		ch = *mem--;
+		*buf++ = highhex (ch);
+		*buf++ = lowhex (ch);
+        }
+
+        /* Terminate properly. */
+	*buf = '\0';
+	return buf;
+}
+
+/* Convert the array, in hexadecimal representation, pointed to by buf into
+   binary representation. Put the result in mem, and return a pointer to
+   the character after the last byte written. */
+static unsigned char*
+hex2mem(unsigned char *mem, char *buf, int count)
+{
+	int i;
+	unsigned char ch;
+	for (i = 0; i < count; i++) {
+		ch = hex (*buf++) << 4;
+		ch = ch + hex (*buf++);
+		*mem++ = ch;
+	}
+	return mem;
+}
+
+/* Put the content of the array, in binary representation, pointed to by buf
+   into memory pointed to by mem, and return a pointer to the character after
+   the last byte written.
+   Gdb will escape $, #, and the escape char (0x7d). */
+static unsigned char*
+bin2mem(unsigned char *mem, unsigned char *buf, int count)
+{
+	int i;
+	unsigned char *next;
+	for (i = 0; i < count; i++) {
+		/* Check for any escaped characters. Be paranoid and
+		   only unescape chars that should be escaped. */
+		if (*buf == 0x7d) {
+			next = buf + 1;
+			if (*next == 0x3 || *next == 0x4 || *next == 0x5D) {
+				 /* #, $, ESC */
+				buf++;
+				*buf += 0x20;
+			}
+		}
+		*mem++ = *buf++;
+	}
+	return mem;
+}
+
+/* Await the sequence $<data>#<checksum> and store <data> in the array buffer
+   returned. */
+static void
+getpacket(char *buffer)
+{
+	unsigned char checksum;
+	unsigned char xmitcsum;
+	int i;
+	int count;
+	char ch;
+
+	do {
+		while((ch = getDebugChar ()) != '$')
+			/* Wait for the start character $ and ignore all other characters */;
+		checksum = 0;
+		xmitcsum = -1;
+		count = 0;
+		/* Read until a # or the end of the buffer is reached */
+		while (count < BUFMAX) {
+			ch = getDebugChar();
+			if (ch == '#')
+				break;
+			checksum = checksum + ch;
+			buffer[count] = ch;
+			count = count + 1;
+		}
+
+		if (count >= BUFMAX)
+			continue;
+
+		buffer[count] = 0;
+
+		if (ch == '#') {
+			xmitcsum = hex(getDebugChar()) << 4;
+			xmitcsum += hex(getDebugChar());
+			if (checksum != xmitcsum) {
+				/* Wrong checksum */
+				putDebugChar('-');
+			} else {
+				/* Correct checksum */
+				putDebugChar('+');
+				/* If sequence characters are received, reply with them */
+				if (buffer[2] == ':') {
+					putDebugChar(buffer[0]);
+					putDebugChar(buffer[1]);
+					/* Remove the sequence characters from the buffer */
+					count = gdb_cris_strlen(buffer);
+					for (i = 3; i <= count; i++)
+						buffer[i - 3] = buffer[i];
+				}
+			}
+		}
+	} while (checksum != xmitcsum);
+}
+
+/* Send $<data>#<checksum> from the <data> in the array buffer. */
+
+static void
+putpacket(char *buffer)
+{
+	int checksum;
+	int runlen;
+	int encode;
+
+	do {
+		char *src = buffer;
+		putDebugChar('$');
+		checksum = 0;
+		while (*src) {
+			/* Do run length encoding */
+			putDebugChar(*src);
+			checksum += *src;
+			runlen = 0;
+			while (runlen < RUNLENMAX && *src == src[runlen]) {
+				runlen++;
+			}
+			if (runlen > 3) {
+				/* Got a useful amount */
+				putDebugChar ('*');
+				checksum += '*';
+				encode = runlen + ' ' - 4;
+				putDebugChar(encode);
+				checksum += encode;
+				src += runlen;
+			} else {
+				src++;
+			}
+		}
+		putDebugChar('#');
+		putDebugChar(highhex (checksum));
+		putDebugChar(lowhex (checksum));
+	} while(kgdb_started && (getDebugChar() != '+'));
+}
+
+/* The string str is prepended with the GDB printout token and sent. Required
+   in traditional implementations. */
+void
+putDebugString(const unsigned char *str, int len)
+{
+	/* Move SPC forward if we are single-stepping. */
+	asm("spchere:");
+	asm("move $spc, $r10");
+	asm("cmp.d spchere, $r10");
+	asm("bne nosstep");
+	asm("nop");
+	asm("move.d spccont, $r10");
+	asm("move $r10, $spc");
+	asm("nosstep:");
+
+        output_buffer[0] = 'O';
+        mem2hex(&output_buffer[1], (unsigned char *)str, len);
+        putpacket(output_buffer);
+
+	asm("spccont:");
+}
+
+/********************************** Handle exceptions ************************/
+/* Build and send a response packet in order to inform the host the
+   stub is stopped. TAAn...:r...;n...:r...;n...:r...;
+                    AA = signal number
+                    n... = register number (hex)
+                    r... = register contents
+                    n... = `thread'
+                    r... = thread process ID.  This is a hex integer.
+                    n... = other string not starting with valid hex digit.
+                    gdb should ignore this n,r pair and go on to the next.
+                    This way we can extend the protocol. */
+static void
+stub_is_stopped(int sigval)
+{
+	char *ptr = output_buffer;
+	unsigned int reg_cont;
+
+	/* Send trap type (converted to signal) */
+
+	*ptr++ = 'T';
+	*ptr++ = highhex(sigval);
+	*ptr++ = lowhex(sigval);
+
+	if (((reg.exs & 0xff00) >> 8) == 0xc) {
+
+		/* Some kind of hardware watchpoint triggered. Find which one
+		   and determine its type (read/write/access).  */
+		int S, bp, trig_bits = 0, rw_bits = 0;
+		int trig_mask = 0;
+		unsigned int *bp_d_regs = &sreg.s3_3;
+		/* In a lot of cases, the stopped data address will simply be EDA.
+		   In some cases, we adjust it to match the watched data range.
+		   (We don't want to change the actual EDA though). */
+		unsigned int stopped_data_address;
+		/* The S field of EXS. */
+		S = (reg.exs & 0xffff0000) >> 16;
+
+		if (S & 1) {
+			/* Instruction watchpoint. */
+			/* FIXME: Check against, and possibly adjust reported EDA. */
+		} else {
+			/* Data watchpoint.  Find the one that triggered. */
+			for (bp = 0; bp < 6; bp++) {
+
+				/* Dx_RD, Dx_WR in the S field of EXS for this BP. */
+				int bitpos_trig = 1 + bp * 2;
+				/* Dx_BPRD, Dx_BPWR in BP_CTRL for this BP. */
+				int bitpos_config = 2 + bp * 4;
+
+				/* Get read/write trig bits for this BP. */
+				trig_bits = (S & (3 << bitpos_trig)) >> bitpos_trig;
+
+				/* Read/write config bits for this BP. */
+				rw_bits = (sreg.s0_3 & (3 << bitpos_config)) >> bitpos_config;
+				if (trig_bits) {
+					/* Sanity check: the BP shouldn't trigger for accesses
+					   that it isn't configured for. */
+					if ((rw_bits == 0x1 && trig_bits != 0x1) ||
+					    (rw_bits == 0x2 && trig_bits != 0x2))
+						panic("Invalid r/w trigging for this BP");
+
+					/* Mark this BP as trigged for future reference. */
+					trig_mask |= (1 << bp);
+
+					if (reg.eda >= bp_d_regs[bp * 2] &&
+					    reg.eda <= bp_d_regs[bp * 2 + 1]) {
+						/* EDA withing range for this BP; it must be the one
+						   we're looking for. */
+						stopped_data_address = reg.eda;
+						break;
+					}
+				}
+			}
+			if (bp < 6) {
+				/* Found a trigged BP with EDA within its configured data range. */
+			} else if (trig_mask) {
+				/* Something triggered, but EDA doesn't match any BP's range. */
+				for (bp = 0; bp < 6; bp++) {
+					/* Dx_BPRD, Dx_BPWR in BP_CTRL for this BP. */
+					int bitpos_config = 2 + bp * 4;
+
+					/* Read/write config bits for this BP (needed later). */
+					rw_bits = (sreg.s0_3 & (3 << bitpos_config)) >> bitpos_config;
+
+					if (trig_mask & (1 << bp)) {
+						/* EDA within 31 bytes of the configured start address? */
+						if (reg.eda + 31 >= bp_d_regs[bp * 2]) {
+							/* Changing the reported address to match
+							   the start address of the first applicable BP. */
+							stopped_data_address = bp_d_regs[bp * 2];
+							break;
+						} else {
+							/* We continue since we might find another useful BP. */
+							printk("EDA doesn't match trigged BP's range");
+						}
+					}
+				}
+			}
+
+			/* No match yet? */
+			BUG_ON(bp >= 6);
+			/* Note that we report the type according to what the BP is configured
+			   for (otherwise we'd never report an 'awatch'), not according to how
+			   it trigged. We did check that the trigged bits match what the BP is
+			   configured for though. */
+			if (rw_bits == 0x1) {
+				/* read */
+				strncpy(ptr, "rwatch", 6);
+				ptr += 6;
+			} else if (rw_bits == 0x2) {
+				/* write */
+				strncpy(ptr, "watch", 5);
+				ptr += 5;
+			} else if (rw_bits == 0x3) {
+				/* access */
+				strncpy(ptr, "awatch", 6);
+				ptr += 6;
+			} else {
+				panic("Invalid r/w bits for this BP.");
+			}
+
+			*ptr++ = ':';
+			/* Note that we don't read_register(EDA, ...) */
+			ptr = mem2hex_nbo(ptr, (unsigned char *)&stopped_data_address, register_size[EDA]);
+			*ptr++ = ';';
+		}
+	}
+	/* Only send PC, frame and stack pointer. */
+	read_register(PC, &reg_cont);
+	*ptr++ = highhex(PC);
+	*ptr++ = lowhex(PC);
+	*ptr++ = ':';
+	ptr = mem2hex(ptr, (unsigned char *)&reg_cont, register_size[PC]);
+	*ptr++ = ';';
+
+	read_register(R8, &reg_cont);
+	*ptr++ = highhex(R8);
+	*ptr++ = lowhex(R8);
+	*ptr++ = ':';
+	ptr = mem2hex(ptr, (unsigned char *)&reg_cont, register_size[R8]);
+	*ptr++ = ';';
+
+	read_register(SP, &reg_cont);
+	*ptr++ = highhex(SP);
+	*ptr++ = lowhex(SP);
+	*ptr++ = ':';
+	ptr = mem2hex(ptr, (unsigned char *)&reg_cont, register_size[SP]);
+	*ptr++ = ';';
+
+	/* Send ERP as well; this will save us an entire register fetch in some cases. */
+        read_register(ERP, &reg_cont);
+        *ptr++ = highhex(ERP);
+        *ptr++ = lowhex(ERP);
+        *ptr++ = ':';
+        ptr = mem2hex(ptr, (unsigned char *)&reg_cont, register_size[ERP]);
+        *ptr++ = ';';
+
+	/* null-terminate and send it off */
+	*ptr = 0;
+	putpacket(output_buffer);
+}
+
+/* Returns the size of an instruction that has a delay slot. */
+
+int insn_size(unsigned long pc)
+{
+	unsigned short opcode = *(unsigned short *)pc;
+	int size = 0;
+
+	switch ((opcode & 0x0f00) >> 8) {
+	case 0x0:
+	case 0x9:
+	case 0xb:
+		size = 2;
+		break;
+	case 0xe:
+	case 0xf:
+		size = 6;
+		break;
+	case 0xd:
+		/* Could be 4 or 6; check more bits. */
+		if ((opcode & 0xff) == 0xff)
+			size = 4;
+		else
+			size = 6;
+		break;
+	default:
+		panic("Couldn't find size of opcode 0x%x at 0x%lx\n", opcode, pc);
+	}
+
+	return size;
+}
+
+void register_fixup(int sigval)
+{
+	/* Compensate for ACR push at the beginning of exception handler. */
+	reg.sp += 4;
+
+	/* Standard case. */
+	reg.pc = reg.erp;
+	if (reg.erp & 0x1) {
+		/* Delay slot bit set.  Report as stopped on proper instruction.  */
+		if (reg.spc) {
+			/* Rely on SPC if set. */
+			reg.pc = reg.spc;
+		} else {
+			/* Calculate the PC from the size of the instruction
+			   that the delay slot we're in belongs to. */
+			reg.pc += insn_size(reg.erp & ~1) - 1 ;
+		}
+	}
+
+	if ((reg.exs & 0x3) == 0x0) {
+		/* Bits 1 - 0 indicate the type of memory operation performed
+		   by the interrupted instruction. 0 means no memory operation,
+		   and EDA is undefined in that case. We zero it to avoid confusion. */
+		reg.eda = 0;
+	}
+
+	if (sigval == SIGTRAP) {
+		/* Break 8, single step or hardware breakpoint exception. */
+
+		/* Check IDX field of EXS. */
+		if (((reg.exs & 0xff00) >> 8) == 0x18) {
+
+			/* Break 8. */
+
+                        /* Static (compiled) breakpoints must return to the next instruction
+			   in order to avoid infinite loops (default value of ERP). Dynamic
+			   (gdb-invoked) must subtract the size of the break instruction from
+			   the ERP so that the instruction that was originally in the break
+			   instruction's place will be run when we return from the exception. */
+			if (!dynamic_bp) {
+				/* Assuming that all breakpoints are dynamic from now on. */
+				dynamic_bp = 1;
+			} else {
+
+				/* Only if not in a delay slot. */
+				if (!(reg.erp & 0x1)) {
+					reg.erp -= 2;
+					reg.pc -= 2;
+				}
+			}
+
+		} else if (((reg.exs & 0xff00) >> 8) == 0x3) {
+			/* Single step. */
+			/* Don't fiddle with S1. */
+
+		} else if (((reg.exs & 0xff00) >> 8) == 0xc) {
+
+			/* Hardware watchpoint exception. */
+
+			/* SPC has been updated so that we will get a single step exception
+			   when we return, but we don't want that. */
+			reg.spc = 0;
+
+			/* Don't fiddle with S1. */
+		}
+
+	} else if (sigval == SIGINT) {
+		/* Nothing special. */
+	}
+}
+
+static void insert_watchpoint(char type, int addr, int len)
+{
+	/* Breakpoint/watchpoint types (GDB terminology):
+	   0 = memory breakpoint for instructions
+	   (not supported; done via memory write instead)
+	   1 = hardware breakpoint for instructions (supported)
+	   2 = write watchpoint (supported)
+	   3 = read watchpoint (supported)
+	   4 = access watchpoint (supported) */
+
+	if (type < '1' || type > '4') {
+		output_buffer[0] = 0;
+		return;
+	}
+
+	/* Read watchpoints are set as access watchpoints, because of GDB's
+	   inability to deal with pure read watchpoints. */
+	if (type == '3')
+		type = '4';
+
+	if (type == '1') {
+		/* Hardware (instruction) breakpoint. */
+		/* Bit 0 in BP_CTRL holds the configuration for I0. */
+		if (sreg.s0_3 & 0x1) {
+			/* Already in use. */
+			gdb_cris_strcpy(output_buffer, error_message[E04]);
+			return;
+		}
+		/* Configure. */
+		sreg.s1_3 = addr;
+		sreg.s2_3 = (addr + len - 1);
+		sreg.s0_3 |= 1;
+	} else {
+		int bp;
+		unsigned int *bp_d_regs = &sreg.s3_3;
+
+		/* The watchpoint allocation scheme is the simplest possible.
+		   For example, if a region is watched for read and
+		   a write watch is requested, a new watchpoint will
+		   be used. Also, if a watch for a region that is already
+		   covered by one or more existing watchpoints, a new
+		   watchpoint will be used. */
+
+		/* First, find a free data watchpoint. */
+		for (bp = 0; bp < 6; bp++) {
+			/* Each data watchpoint's control registers occupy 2 bits
+			   (hence the 3), starting at bit 2 for D0 (hence the 2)
+			   with 4 bits between for each watchpoint (yes, the 4). */
+			if (!(sreg.s0_3 & (0x3 << (2 + (bp * 4))))) {
+				break;
+			}
+		}
+
+		if (bp > 5) {
+			/* We're out of watchpoints. */
+			gdb_cris_strcpy(output_buffer, error_message[E04]);
+			return;
+		}
+
+		/* Configure the control register first. */
+		if (type == '3' || type == '4') {
+			/* Trigger on read. */
+			sreg.s0_3 |= (1 << (2 + bp * 4));
+		}
+		if (type == '2' || type == '4') {
+			/* Trigger on write. */
+			sreg.s0_3 |= (2 << (2 + bp * 4));
+		}
+
+		/* Ugly pointer arithmetics to configure the watched range. */
+		bp_d_regs[bp * 2] = addr;
+		bp_d_regs[bp * 2 + 1] = (addr + len - 1);
+	}
+
+	/* Set the S1 flag to enable watchpoints. */
+	reg.ccs |= (1 << (S_CCS_BITNR + CCS_SHIFT));
+	gdb_cris_strcpy(output_buffer, "OK");
+}
+
+static void remove_watchpoint(char type, int addr, int len)
+{
+	/* Breakpoint/watchpoint types:
+	   0 = memory breakpoint for instructions
+	   (not supported; done via memory write instead)
+	   1 = hardware breakpoint for instructions (supported)
+	   2 = write watchpoint (supported)
+	   3 = read watchpoint (supported)
+	   4 = access watchpoint (supported) */
+	if (type < '1' || type > '4') {
+		output_buffer[0] = 0;
+		return;
+	}
+
+	/* Read watchpoints are set as access watchpoints, because of GDB's
+	   inability to deal with pure read watchpoints. */
+	if (type == '3')
+		type = '4';
+
+	if (type == '1') {
+		/* Hardware breakpoint. */
+		/* Bit 0 in BP_CTRL holds the configuration for I0. */
+		if (!(sreg.s0_3 & 0x1)) {
+			/* Not in use. */
+			gdb_cris_strcpy(output_buffer, error_message[E04]);
+			return;
+		}
+		/* Deconfigure. */
+		sreg.s1_3 = 0;
+		sreg.s2_3 = 0;
+		sreg.s0_3 &= ~1;
+	} else {
+		int bp;
+		unsigned int *bp_d_regs = &sreg.s3_3;
+		/* Try to find a watchpoint that is configured for the
+		   specified range, then check that read/write also matches. */
+
+		/* Ugly pointer arithmetic, since I cannot rely on a
+		   single switch (addr) as there may be several watchpoints with
+		   the same start address for example. */
+
+		for (bp = 0; bp < 6; bp++) {
+			if (bp_d_regs[bp * 2] == addr &&
+			    bp_d_regs[bp * 2 + 1] == (addr + len - 1)) {
+				/* Matching range. */
+				int bitpos = 2 + bp * 4;
+				int rw_bits;
+
+				/* Read/write bits for this BP. */
+				rw_bits = (sreg.s0_3 & (0x3 << bitpos)) >> bitpos;
+
+				if ((type == '3' && rw_bits == 0x1) ||
+				    (type == '2' && rw_bits == 0x2) ||
+				    (type == '4' && rw_bits == 0x3)) {
+					/* Read/write matched. */
+					break;
+				}
+			}
+		}
+
+		if (bp > 5) {
+			/* No watchpoint matched. */
+			gdb_cris_strcpy(output_buffer, error_message[E04]);
+			return;
+		}
+
+		/* Found a matching watchpoint. Now, deconfigure it by
+		   both disabling read/write in bp_ctrl and zeroing its
+		   start/end addresses. */
+		sreg.s0_3 &= ~(3 << (2 + (bp * 4)));
+		bp_d_regs[bp * 2] = 0;
+		bp_d_regs[bp * 2 + 1] = 0;
+	}
+
+	/* Note that we don't clear the S1 flag here. It's done when continuing.  */
+	gdb_cris_strcpy(output_buffer, "OK");
+}
+
+
+
+/* All expected commands are sent from remote.c. Send a response according
+   to the description in remote.c. */
+void
+handle_exception(int sigval)
+{
+	/* Avoid warning of not used. */
+
+	USEDFUN(handle_exception);
+	USEDVAR(internal_stack[0]);
+
+	register_fixup(sigval);
+
+	/* Send response. */
+	stub_is_stopped(sigval);
+
+	for (;;) {
+		output_buffer[0] = '\0';
+		getpacket(input_buffer);
+		switch (input_buffer[0]) {
+			case 'g':
+				/* Read registers: g
+				   Success: Each byte of register data is described by two hex digits.
+				   Registers are in the internal order for GDB, and the bytes
+				   in a register  are in the same order the machine uses.
+				   Failure: void. */
+			{
+				char *buf;
+				/* General and special registers. */
+				buf = mem2hex(output_buffer, (char *)&reg, sizeof(registers));
+				/* Support registers. */
+				/* -1 because of the null termination that mem2hex adds. */
+				mem2hex(buf,
+					(char *)&sreg + (reg.srs * 16 * sizeof(unsigned int)),
+					16 * sizeof(unsigned int));
+				break;
+			}
+			case 'G':
+				/* Write registers. GXX..XX
+				   Each byte of register data  is described by two hex digits.
+				   Success: OK
+				   Failure: void. */
+				/* General and special registers. */
+				hex2mem((char *)&reg, &input_buffer[1], sizeof(registers));
+				/* Support registers. */
+				hex2mem((char *)&sreg + (reg.srs * 16 * sizeof(unsigned int)),
+					&input_buffer[1] + sizeof(registers),
+					16 * sizeof(unsigned int));
+				gdb_cris_strcpy(output_buffer, "OK");
+				break;
+
+			case 'P':
+				/* Write register. Pn...=r...
+				   Write register n..., hex value without 0x, with value r...,
+				   which contains a hex value without 0x and two hex digits
+				   for each byte in the register (target byte order). P1f=11223344 means
+				   set register 31 to 44332211.
+				   Success: OK
+				   Failure: E02, E05 */
+				{
+					char *suffix;
+					int regno = gdb_cris_strtol(&input_buffer[1], &suffix, 16);
+					int status;
+
+					status = write_register(regno, suffix+1);
+
+					switch (status) {
+						case E02:
+							/* Do not support read-only registers. */
+							gdb_cris_strcpy(output_buffer, error_message[E02]);
+							break;
+						case E05:
+							/* Do not support non-existing registers. */
+							gdb_cris_strcpy(output_buffer, error_message[E05]);
+							break;
+						default:
+							/* Valid register number. */
+							gdb_cris_strcpy(output_buffer, "OK");
+							break;
+					}
+				}
+				break;
+
+			case 'm':
+				/* Read from memory. mAA..AA,LLLL
+				   AA..AA is the address and LLLL is the length.
+				   Success: XX..XX is the memory content.  Can be fewer bytes than
+				   requested if only part of the data may be read. m6000120a,6c means
+				   retrieve 108 byte from base address 6000120a.
+				   Failure: void. */
+				{
+                                        char *suffix;
+					unsigned char *addr = (unsigned char *)gdb_cris_strtol(&input_buffer[1],
+                                                                                               &suffix, 16);
+					int len = gdb_cris_strtol(suffix+1, 0, 16);
+
+					/* Bogus read (i.e. outside the kernel's
+					   segment)? . */
+					if (!((unsigned int)addr >= 0xc0000000 &&
+					      (unsigned int)addr < 0xd0000000))
+						addr = NULL;
+
+                                        mem2hex(output_buffer, addr, len);
+                                }
+				break;
+
+			case 'X':
+				/* Write to memory. XAA..AA,LLLL:XX..XX
+				   AA..AA is the start address,  LLLL is the number of bytes, and
+				   XX..XX is the binary data.
+				   Success: OK
+				   Failure: void. */
+			case 'M':
+				/* Write to memory. MAA..AA,LLLL:XX..XX
+				   AA..AA is the start address,  LLLL is the number of bytes, and
+				   XX..XX is the hexadecimal data.
+				   Success: OK
+				   Failure: void. */
+				{
+					char *lenptr;
+					char *dataptr;
+					unsigned char *addr = (unsigned char *)gdb_cris_strtol(&input_buffer[1],
+										      &lenptr, 16);
+					int len = gdb_cris_strtol(lenptr+1, &dataptr, 16);
+					if (*lenptr == ',' && *dataptr == ':') {
+						if (input_buffer[0] == 'M') {
+							hex2mem(addr, dataptr + 1, len);
+						} else /* X */ {
+							bin2mem(addr, dataptr + 1, len);
+						}
+						gdb_cris_strcpy(output_buffer, "OK");
+					}
+					else {
+						gdb_cris_strcpy(output_buffer, error_message[E06]);
+					}
+				}
+				break;
+
+			case 'c':
+				/* Continue execution. cAA..AA
+				   AA..AA is the address where execution is resumed. If AA..AA is
+				   omitted, resume at the present address.
+				   Success: return to the executing thread.
+				   Failure: will never know. */
+
+				if (input_buffer[1] != '\0') {
+					/* FIXME: Doesn't handle address argument. */
+					gdb_cris_strcpy(output_buffer, error_message[E04]);
+					break;
+				}
+
+				/* Before continuing, make sure everything is set up correctly. */
+
+				/* Set the SPC to some unlikely value.  */
+				reg.spc = 0;
+				/* Set the S1 flag to 0 unless some watchpoint is enabled (since setting
+				   S1 to 0 would also disable watchpoints). (Note that bits 26-31 in BP_CTRL
+				   are reserved, so don't check against those). */
+				if ((sreg.s0_3 & 0x3fff) == 0) {
+					reg.ccs &= ~(1 << (S_CCS_BITNR + CCS_SHIFT));
+				}
+
+				return;
+
+			case 's':
+				/* Step. sAA..AA
+				   AA..AA is the address where execution is resumed. If AA..AA is
+				   omitted, resume at the present address. Success: return to the
+				   executing thread. Failure: will never know. */
+
+				if (input_buffer[1] != '\0') {
+					/* FIXME: Doesn't handle address argument. */
+					gdb_cris_strcpy(output_buffer, error_message[E04]);
+					break;
+				}
+
+				/* Set the SPC to PC, which is where we'll return
+				   (deduced previously). */
+				reg.spc = reg.pc;
+
+				/* Set the S1 (first stacked, not current) flag, which will
+				   kick into action when we rfe. */
+				reg.ccs |= (1 << (S_CCS_BITNR + CCS_SHIFT));
+				return;
+
+                       case 'Z':
+
+                               /* Insert breakpoint or watchpoint, Ztype,addr,length.
+                                  Remote protocol says: A remote target shall return an empty string
+                                  for an unrecognized breakpoint or watchpoint packet type. */
+                               {
+                                       char *lenptr;
+                                       char *dataptr;
+                                       int addr = gdb_cris_strtol(&input_buffer[3], &lenptr, 16);
+                                       int len = gdb_cris_strtol(lenptr + 1, &dataptr, 16);
+                                       char type = input_buffer[1];
+
+				       insert_watchpoint(type, addr, len);
+                                       break;
+                               }
+
+                       case 'z':
+                               /* Remove breakpoint or watchpoint, Ztype,addr,length.
+                                  Remote protocol says: A remote target shall return an empty string
+                                  for an unrecognized breakpoint or watchpoint packet type. */
+                               {
+                                       char *lenptr;
+                                       char *dataptr;
+                                       int addr = gdb_cris_strtol(&input_buffer[3], &lenptr, 16);
+                                       int len = gdb_cris_strtol(lenptr + 1, &dataptr, 16);
+                                       char type = input_buffer[1];
+
+                                       remove_watchpoint(type, addr, len);
+                                       break;
+                               }
+
+
+			case '?':
+				/* The last signal which caused a stop. ?
+				   Success: SAA, where AA is the signal number.
+				   Failure: void. */
+				output_buffer[0] = 'S';
+				output_buffer[1] = highhex(sigval);
+				output_buffer[2] = lowhex(sigval);
+				output_buffer[3] = 0;
+				break;
+
+			case 'D':
+				/* Detach from host. D
+				   Success: OK, and return to the executing thread.
+				   Failure: will never know */
+				putpacket("OK");
+				return;
+
+			case 'k':
+			case 'r':
+				/* kill request or reset request.
+				   Success: restart of target.
+				   Failure: will never know. */
+				kill_restart();
+				break;
+
+			case 'C':
+			case 'S':
+			case '!':
+			case 'R':
+			case 'd':
+				/* Continue with signal sig. Csig;AA..AA
+				   Step with signal sig. Ssig;AA..AA
+				   Use the extended remote protocol. !
+				   Restart the target system. R0
+				   Toggle debug flag. d
+				   Search backwards. tAA:PP,MM
+				   Not supported: E04 */
+
+				/* FIXME: What's the difference between not supported
+				   and ignored (below)? */
+				gdb_cris_strcpy(output_buffer, error_message[E04]);
+				break;
+
+			default:
+				/* The stub should ignore other request and send an empty
+				   response ($#<checksum>). This way we can extend the protocol and GDB
+				   can tell whether the stub it is talking to uses the old or the new. */
+				output_buffer[0] = 0;
+				break;
+		}
+		putpacket(output_buffer);
+	}
+}
+
+void
+kgdb_init(void)
+{
+	reg_intr_vect_rw_mask intr_mask;
+	reg_ser_rw_intr_mask ser_intr_mask;
+
+	/* Configure the kgdb serial port. */
+#if defined(CONFIG_ETRAX_KGDB_PORT0)
+	/* Note: no shortcut registered (not handled by multiple_interrupt).
+	   See entry.S.  */
+	set_exception_vector(SER0_INTR_VECT, kgdb_handle_exception);
+	/* Enable the ser irq in the global config. */
+	intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
+	intr_mask.ser0 = 1;
+	REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
+
+	ser_intr_mask = REG_RD(ser, regi_ser0, rw_intr_mask);
+	ser_intr_mask.data_avail = regk_ser_yes;
+	REG_WR(ser, regi_ser0, rw_intr_mask, ser_intr_mask);
+#elif defined(CONFIG_ETRAX_KGDB_PORT1)
+	/* Note: no shortcut registered (not handled by multiple_interrupt).
+	   See entry.S.  */
+	set_exception_vector(SER1_INTR_VECT, kgdb_handle_exception);
+	/* Enable the ser irq in the global config. */
+	intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
+	intr_mask.ser1 = 1;
+	REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
+
+	ser_intr_mask = REG_RD(ser, regi_ser1, rw_intr_mask);
+	ser_intr_mask.data_avail = regk_ser_yes;
+	REG_WR(ser, regi_ser1, rw_intr_mask, ser_intr_mask);
+#elif defined(CONFIG_ETRAX_KGDB_PORT2)
+	/* Note: no shortcut registered (not handled by multiple_interrupt).
+	   See entry.S.  */
+	set_exception_vector(SER2_INTR_VECT, kgdb_handle_exception);
+	/* Enable the ser irq in the global config. */
+	intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
+	intr_mask.ser2 = 1;
+	REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
+
+	ser_intr_mask = REG_RD(ser, regi_ser2, rw_intr_mask);
+	ser_intr_mask.data_avail = regk_ser_yes;
+	REG_WR(ser, regi_ser2, rw_intr_mask, ser_intr_mask);
+#elif defined(CONFIG_ETRAX_KGDB_PORT3)
+	/* Note: no shortcut registered (not handled by multiple_interrupt).
+	   See entry.S.  */
+	set_exception_vector(SER3_INTR_VECT, kgdb_handle_exception);
+	/* Enable the ser irq in the global config. */
+	intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
+	intr_mask.ser3 = 1;
+	REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
+
+	ser_intr_mask = REG_RD(ser, regi_ser3, rw_intr_mask);
+	ser_intr_mask.data_avail = regk_ser_yes;
+	REG_WR(ser, regi_ser3, rw_intr_mask, ser_intr_mask);
+#endif
+
+}
+/* Performs a complete re-start from scratch. */
+static void
+kill_restart(void)
+{
+	machine_restart("");
+}
+
+/* Use this static breakpoint in the start-up only. */
+
+void
+breakpoint(void)
+{
+	kgdb_started = 1;
+	dynamic_bp = 0;     /* This is a static, not a dynamic breakpoint. */
+	__asm__ volatile ("break 8"); /* Jump to kgdb_handle_breakpoint. */
+}
+
+/****************************** End of file **********************************/
diff --git a/arch/cris/arch-v32/kernel/kgdb_asm.S b/arch/cris/arch-v32/kernel/kgdb_asm.S
new file mode 100644
index 00000000000..b350dd279ed
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/kgdb_asm.S
@@ -0,0 +1,552 @@
+/*
+ *  Copyright (C) 2004 Axis Communications AB
+ *
+ * Code for handling break 8, hardware breakpoint, single step, and serial
+ * port exceptions for kernel debugging purposes.
+ */
+
+#include <linux/config.h>
+#include <asm/arch/hwregs/intr_vect.h>
+
+	;; Exported functions.
+	.globl kgdb_handle_exception
+
+kgdb_handle_exception:
+
+;; Create a register image of the caller.
+;;
+;; First of all, save the ACR on the stack since we need it for address calculations.
+;; We put it into the register struct later.
+
+  subq     4, $sp
+  move.d   $acr, [$sp]
+
+;; Now we are free to use ACR all we want.
+;; If we were running this handler with interrupts on, we would have to be careful
+;; to save and restore CCS manually, but since we aren't we treat it like every other
+;; register.
+
+  move.d   reg,  $acr
+  move.d   $r0,  [$acr]        ; Save R0 (start of register struct)
+  addq     4,    $acr
+  move.d   $r1,  [$acr]        ; Save R1
+  addq     4,    $acr
+  move.d   $r2,  [$acr]        ; Save R2
+  addq     4,    $acr
+  move.d   $r3,  [$acr]        ; Save R3
+  addq     4,    $acr
+  move.d   $r4,  [$acr]        ; Save R4
+  addq     4,    $acr
+  move.d   $r5,  [$acr]        ; Save R5
+  addq     4,    $acr
+  move.d   $r6,  [$acr]        ; Save R6
+  addq     4,    $acr
+  move.d   $r7,  [$acr]        ; Save R7
+  addq     4,    $acr
+  move.d   $r8,  [$acr]        ; Save R8
+  addq     4,    $acr
+  move.d   $r9,  [$acr]        ; Save R9
+  addq     4,    $acr
+  move.d   $r10, [$acr]        ; Save R10
+  addq     4,    $acr
+  move.d   $r11, [$acr]        ; Save R11
+  addq     4,    $acr
+  move.d   $r12, [$acr]        ; Save R12
+  addq     4,    $acr
+  move.d   $r13, [$acr]        ; Save R13
+  addq     4,    $acr
+  move.d   $sp,  [$acr]        ; Save SP (R14)
+  addq     4,    $acr
+
+  ;; The ACR register is already saved on the stack, so pop it from there.
+  move.d   [$sp],$r0
+  move.d   $r0,  [$acr]
+  addq     4,    $acr
+
+  move     $bz,  [$acr]
+  addq     1,    $acr
+  move     $vr,  [$acr]
+  addq     1,    $acr
+  move     $pid, [$acr]
+  addq     4,    $acr
+  move     $srs, [$acr]
+  addq     1,    $acr
+  move     $wz,  [$acr]
+  addq     2,    $acr
+  move     $exs, [$acr]
+  addq     4,    $acr
+  move     $eda, [$acr]
+  addq     4,    $acr
+  move     $mof, [$acr]
+  addq     4,    $acr
+  move     $dz,  [$acr]
+  addq     4,    $acr
+  move     $ebp, [$acr]
+  addq     4,    $acr
+  move     $erp, [$acr]
+  addq     4,    $acr
+  move     $srp, [$acr]
+  addq     4,    $acr
+  move     $nrp, [$acr]
+  addq     4,    $acr
+  move     $ccs, [$acr]
+  addq     4,    $acr
+  move     $usp, [$acr]
+  addq     4,    $acr
+  move     $spc, [$acr]
+  addq     4,     $acr
+
+;; Skip the pseudo-PC.
+  addq     4,     $acr
+
+;; Save the support registers in bank 0 - 3.
+  clear.d $r1 ; Bank counter
+  move.d  sreg, $acr
+
+;; Bank 0
+  move    $r1,  $srs
+  nop
+  nop
+  nop
+  move    $s0,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s1,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s2,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s3,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s4,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s5,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s6,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s7,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s8,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s9,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s10,  $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s11,  $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s12,  $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+
+  ;; Nothing in S13 - S15, bank 0
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+
+;; Bank 1 and bank 2 have the same layout, hence the loop.
+  addq    1, $r1
+1:
+  move    $r1,  $srs
+  nop
+  nop
+  nop
+  move    $s0,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s1,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s2,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s3,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s4,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s5,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s6,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+
+  ;; Nothing in S7 - S15, bank 1 and 2
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+  clear.d [$acr]
+  addq    4,     $acr
+
+  addq 1, $r1
+  cmpq 3, $r1
+  bne 1b
+  nop
+
+;; Bank 3
+  move    $r1,  $srs
+  nop
+  nop
+  nop
+  move    $s0,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s1,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s2,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s3,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s4,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s5,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s6,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s7,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s8,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s9,   $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s10,  $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s11,  $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s12,  $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s13,  $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+  move    $s14,  $r0
+  move.d  $r0,   [$acr]
+  addq    4,     $acr
+;; Nothing in S15, bank 3
+  clear.d [$acr]
+  addq    4,     $acr
+
+;; Check what got us here: get IDX field of EXS.
+  move $exs,    $r10
+  and.d 0xff00, $r10
+  lsrq 8,       $r10
+#if defined(CONFIG_ETRAX_KGDB_PORT0)
+  cmp.d SER0_INTR_VECT,   $r10 ; IRQ for serial port 0
+  beq sigint
+  nop
+#elif defined(CONFIG_ETRAX_KGDB_PORT1)
+  cmp.d SER1_INTR_VECT,   $r10 ; IRQ for serial port 1
+  beq sigint
+  nop
+#elif defined(CONFIG_ETRAX_KGDB_PORT2)
+  cmp.d SER2_INTR_VECT,   $r10 ; IRQ for serial port 2
+  beq sigint
+  nop
+#elif defined(CONFIG_ETRAX_KGDB_PORT3)
+  cmp.d SER3_INTR_VECT,   $r10 ; IRQ for serial port 3
+  beq sigint
+  nop
+#endif
+;; Multiple interrupt must be due to serial break.
+  cmp.d 0x30,   $r10 ; Multiple interrupt
+  beq sigint
+  nop
+;; Neither of those? Then it's a sigtrap.
+  ba handle_comm
+  moveq 5, $r10      ; Set SIGTRAP (delay slot)
+
+sigint:
+  ;; Serial interrupt; get character
+  jsr getDebugChar
+  nop                ; Delay slot
+  cmp.b 3, $r10      ; \003 (Ctrl-C)?
+  bne return         ; No, get out of here
+  nop
+  moveq 2, $r10      ; Set SIGINT
+
+;;
+;; Handle the communication
+;;
+handle_comm:
+  move.d   internal_stack+1020, $sp ; Use the internal stack which grows upwards
+  jsr      handle_exception         ; Interactive routine
+  nop
+
+;;
+;; Return to the caller
+;;
+return:
+
+;; First of all, write the support registers.
+  clear.d $r1 ; Bank counter
+  move.d  sreg, $acr
+
+;; Bank 0
+  move    $r1,  $srs
+  nop
+  nop
+  nop
+  move.d  [$acr], $r0
+  move    $r0,    $s0
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s1
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s2
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s3
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s4
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s5
+  addq    4,      $acr
+
+;; Nothing in S6 - S7, bank 0.
+  addq    4,      $acr
+  addq    4,      $acr
+
+  move.d  [$acr], $r0
+  move    $r0,    $s8
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s9
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s10
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s11
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s12
+  addq    4,      $acr
+
+;; Nothing in S13 - S15, bank 0
+  addq    4,      $acr
+  addq    4,      $acr
+  addq    4,      $acr
+
+;; Bank 1 and bank 2 have the same layout, hence the loop.
+  addq    1, $r1
+2:
+  move    $r1,  $srs
+  nop
+  nop
+  nop
+  move.d  [$acr], $r0
+  move    $r0,    $s0
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s1
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s2
+  addq    4,      $acr
+
+;; S3 (MM_CAUSE) is read-only.
+  addq    4,      $acr
+
+  move.d  [$acr], $r0
+  move    $r0,    $s4
+  addq    4,      $acr
+
+;; FIXME: Actually write S5/S6? (Affects MM_CAUSE.)
+  addq    4,      $acr
+  addq    4,      $acr
+
+;; Nothing in S7 - S15, bank 1 and 2
+  addq    4,      $acr
+  addq    4,      $acr
+  addq    4,      $acr
+  addq    4,      $acr
+  addq    4,      $acr
+  addq    4,      $acr
+  addq    4,      $acr
+  addq    4,      $acr
+  addq    4,      $acr
+
+  addq 1, $r1
+  cmpq 3, $r1
+  bne 2b
+  nop
+
+;; Bank 3
+  move    $r1,  $srs
+  nop
+  nop
+  nop
+  move.d  [$acr], $r0
+  move    $r0,    $s0
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s1
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s2
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s3
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s4
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s5
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s6
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s7
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s8
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s9
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s10
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s11
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s12
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s13
+  addq    4,      $acr
+  move.d  [$acr], $r0
+  move    $r0,    $s14
+  addq    4,      $acr
+
+;; Nothing in S15, bank 3
+  addq    4,      $acr
+
+;; Now, move on to the regular register restoration process.
+
+   move.d  reg,    $acr   ; Reset ACR to point at the beginning of the register image
+   move.d  [$acr], $r0    ; Restore R0
+   addq    4,      $acr
+   move.d  [$acr], $r1    ; Restore R1
+   addq    4,      $acr
+   move.d  [$acr], $r2    ; Restore R2
+   addq    4,      $acr
+   move.d  [$acr], $r3    ; Restore R3
+   addq    4,      $acr
+   move.d  [$acr], $r4    ; Restore R4
+   addq    4,      $acr
+   move.d  [$acr], $r5    ; Restore R5
+   addq    4,      $acr
+   move.d  [$acr], $r6    ; Restore R6
+   addq    4,      $acr
+   move.d  [$acr], $r7    ; Restore R7
+   addq    4,      $acr
+   move.d  [$acr], $r8    ; Restore R8
+   addq    4,      $acr
+   move.d  [$acr], $r9    ; Restore R9
+   addq    4,      $acr
+   move.d  [$acr], $r10   ; Restore R10
+   addq    4,      $acr
+   move.d  [$acr], $r11   ; Restore R11
+   addq    4,      $acr
+   move.d  [$acr], $r12   ; Restore R12
+   addq    4,      $acr
+   move.d  [$acr], $r13   ; Restore R13
+
+;;
+;; We restore all registers, even though some of them probably haven't changed.
+;;
+
+   addq    4,      $acr
+   move.d  [$acr], $sp    ; Restore SP (R14)
+
+   ;; ACR cannot be restored just yet.
+   addq    8,      $acr
+
+   ;; Skip BZ, VR.
+   addq    2,      $acr
+
+   move    [$acr], $pid   ; Restore PID
+   addq    4,      $acr
+   move    [$acr], $srs   ; Restore SRS
+   nop
+   nop
+   nop
+   addq    1,      $acr
+
+   ;; Skip WZ.
+   addq    2,      $acr
+
+   move    [$acr], $exs    ; Restore EXS.
+   addq    4,      $acr
+   move    [$acr], $eda    ; Restore EDA.
+   addq    4,      $acr
+   move    [$acr], $mof    ; Restore MOF.
+
+   ;; Skip DZ.
+   addq    8,      $acr
+
+   move    [$acr], $ebp    ; Restore EBP.
+   addq    4,      $acr
+   move    [$acr], $erp    ; Restore ERP.
+   addq    4,      $acr
+   move    [$acr], $srp    ; Restore SRP.
+   addq    4,      $acr
+   move    [$acr], $nrp    ; Restore NRP.
+   addq    4,      $acr
+   move    [$acr], $ccs    ; Restore CCS like an ordinary register.
+   addq    4,      $acr
+   move    [$acr], $usp    ; Restore USP
+   addq    4,      $acr
+   move    [$acr], $spc    ; Restore SPC
+                           ; No restoration of pseudo-PC of course.
+
+   move.d  reg,    $acr    ; Reset ACR to point at the beginning of the register image
+   add.d   15*4,   $acr
+   move.d  [$acr], $acr    ; Finally, restore ACR.
+   rete                    ; Same as jump ERP
+   rfe                     ; Shifts CCS
diff --git a/arch/cris/arch-v32/kernel/pinmux.c b/arch/cris/arch-v32/kernel/pinmux.c
new file mode 100644
index 00000000000..a2b8aa37c1b
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/pinmux.c
@@ -0,0 +1,229 @@
+/*
+ * Allocator for I/O pins. All pins are allocated to GPIO at bootup.
+ * Unassigned pins and GPIO pins can be allocated to a fixed interface
+ * or the I/O processor instead.
+ *
+ * Copyright (c) 2004 Axis Communications AB.
+ */
+
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/spinlock.h>
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/pinmux.h>
+#include <asm/arch/hwregs/pinmux_defs.h>
+
+#undef DEBUG
+
+#define PORT_PINS 18
+#define PORTS 4
+
+static char pins[PORTS][PORT_PINS];
+static DEFINE_SPINLOCK(pinmux_lock);
+
+static void crisv32_pinmux_set(int port);
+
+int
+crisv32_pinmux_init(void)
+{
+	static int initialized = 0;
+
+	if (!initialized) {
+		reg_pinmux_rw_pa pa = REG_RD(pinmux, regi_pinmux, rw_pa);
+		initialized = 1;
+		pa.pa0 = pa.pa1 = pa.pa2 = pa.pa3 =
+		pa.pa4 = pa.pa5 = pa.pa6 = pa.pa7 = regk_pinmux_yes;
+		REG_WR(pinmux, regi_pinmux, rw_pa, pa);
+		crisv32_pinmux_alloc(PORT_B, 0, PORT_PINS - 1, pinmux_gpio);
+		crisv32_pinmux_alloc(PORT_C, 0, PORT_PINS - 1, pinmux_gpio);
+		crisv32_pinmux_alloc(PORT_D, 0, PORT_PINS - 1, pinmux_gpio);
+		crisv32_pinmux_alloc(PORT_E, 0, PORT_PINS - 1, pinmux_gpio);
+	}
+
+	return 0;
+}
+
+int
+crisv32_pinmux_alloc(int port, int first_pin, int last_pin, enum pin_mode mode)
+{
+	int i;
+	unsigned long flags;
+
+	crisv32_pinmux_init();
+
+	if (port > PORTS)
+		return -EINVAL;
+
+	spin_lock_irqsave(&pinmux_lock, flags);
+
+	for (i = first_pin; i <= last_pin; i++)
+	{
+		if ((pins[port][i] != pinmux_none) && (pins[port][i] != pinmux_gpio) &&
+		    (pins[port][i] != mode))
+		{
+			spin_unlock_irqrestore(&pinmux_lock, flags);
+#ifdef DEBUG
+			panic("Pinmux alloc failed!\n");
+#endif
+			return -EPERM;
+		}
+	}
+
+	for (i = first_pin; i <= last_pin; i++)
+		pins[port][i] = mode;
+
+	crisv32_pinmux_set(port);
+
+	spin_unlock_irqrestore(&pinmux_lock, flags);
+
+	return 0;
+}
+
+int
+crisv32_pinmux_alloc_fixed(enum fixed_function function)
+{
+	int ret = -EINVAL;
+	char saved[sizeof pins];
+	unsigned long flags;
+
+	spin_lock_irqsave(&pinmux_lock, flags);
+
+	/* Save internal data for recovery */
+	memcpy(saved, pins, sizeof pins);
+
+	reg_pinmux_rw_hwprot hwprot = REG_RD(pinmux, regi_pinmux, rw_hwprot);
+
+	switch(function)
+	{
+	case pinmux_ser1:
+		ret = crisv32_pinmux_alloc(PORT_C, 4, 7, pinmux_fixed);
+		hwprot.ser1 = regk_pinmux_yes;
+		break;
+	case pinmux_ser2:
+		ret = crisv32_pinmux_alloc(PORT_C, 8, 11, pinmux_fixed);
+		hwprot.ser2 = regk_pinmux_yes;
+		break;
+	case pinmux_ser3:
+		ret = crisv32_pinmux_alloc(PORT_C, 12, 15, pinmux_fixed);
+		hwprot.ser3 = regk_pinmux_yes;
+		break;
+	case pinmux_sser0:
+		ret = crisv32_pinmux_alloc(PORT_C, 0, 3, pinmux_fixed);
+		ret |= crisv32_pinmux_alloc(PORT_C, 16, 16, pinmux_fixed);
+		hwprot.sser0 = regk_pinmux_yes;
+		break;
+	case pinmux_sser1:
+		ret = crisv32_pinmux_alloc(PORT_D, 0, 4, pinmux_fixed);
+		hwprot.sser1 = regk_pinmux_yes;
+		break;
+	case pinmux_ata0:
+		ret = crisv32_pinmux_alloc(PORT_D, 5, 7, pinmux_fixed);
+		ret |= crisv32_pinmux_alloc(PORT_D, 15, 17, pinmux_fixed);
+		hwprot.ata0 = regk_pinmux_yes;
+		break;
+	case pinmux_ata1:
+		ret = crisv32_pinmux_alloc(PORT_D, 0, 4, pinmux_fixed);
+		ret |= crisv32_pinmux_alloc(PORT_E, 17, 17, pinmux_fixed);
+		hwprot.ata1 = regk_pinmux_yes;
+		break;
+	case pinmux_ata2:
+		ret = crisv32_pinmux_alloc(PORT_C, 11, 15, pinmux_fixed);
+		ret |= crisv32_pinmux_alloc(PORT_E, 3, 3, pinmux_fixed);
+		hwprot.ata2 = regk_pinmux_yes;
+		break;
+	case pinmux_ata3:
+		ret = crisv32_pinmux_alloc(PORT_C, 8, 10, pinmux_fixed);
+		ret |= crisv32_pinmux_alloc(PORT_C, 0, 2, pinmux_fixed);
+		hwprot.ata2 = regk_pinmux_yes;
+		break;
+	case pinmux_ata:
+		ret = crisv32_pinmux_alloc(PORT_B, 0, 15, pinmux_fixed);
+		ret |= crisv32_pinmux_alloc(PORT_D, 8, 15, pinmux_fixed);
+		hwprot.ata = regk_pinmux_yes;
+		break;
+	case pinmux_eth1:
+		ret = crisv32_pinmux_alloc(PORT_E, 0, 17, pinmux_fixed);
+		hwprot.eth1 = regk_pinmux_yes;
+		hwprot.eth1_mgm = regk_pinmux_yes;
+		break;
+	case pinmux_timer:
+		ret = crisv32_pinmux_alloc(PORT_C, 16, 16, pinmux_fixed);
+		hwprot.timer = regk_pinmux_yes;
+		spin_unlock_irqrestore(&pinmux_lock, flags);
+		return ret;
+	}
+
+	if (!ret)
+		REG_WR(pinmux, regi_pinmux, rw_hwprot, hwprot);
+	else
+		memcpy(pins, saved, sizeof pins);
+
+  spin_unlock_irqrestore(&pinmux_lock, flags);
+
+  return ret;
+}
+
+void
+crisv32_pinmux_set(int port)
+{
+	int i;
+	int gpio_val = 0;
+	int iop_val = 0;
+
+	for (i = 0; i < PORT_PINS; i++)
+	{
+		if (pins[port][i] == pinmux_gpio)
+			gpio_val |= (1 << i);
+		else if (pins[port][i] == pinmux_iop)
+			iop_val |= (1 << i);
+	}
+
+	REG_WRITE(int, regi_pinmux + REG_RD_ADDR_pinmux_rw_pb_gio + 8*port, gpio_val);
+	REG_WRITE(int, regi_pinmux + REG_RD_ADDR_pinmux_rw_pb_iop + 8*port, iop_val);
+
+#ifdef DEBUG
+       crisv32_pinmux_dump();
+#endif
+}
+
+int
+crisv32_pinmux_dealloc(int port, int first_pin, int last_pin)
+{
+	int i;
+	unsigned long flags;
+
+	crisv32_pinmux_init();
+
+	if (port > PORTS)
+		return -EINVAL;
+
+	spin_lock_irqsave(&pinmux_lock, flags);
+
+	for (i = first_pin; i <= last_pin; i++)
+		pins[port][i] = pinmux_none;
+
+	crisv32_pinmux_set(port);
+	spin_unlock_irqrestore(&pinmux_lock, flags);
+
+	return 0;
+}
+
+void
+crisv32_pinmux_dump(void)
+{
+	int i, j;
+
+	crisv32_pinmux_init();
+
+	for (i = 0; i < PORTS; i++)
+	{
+		printk("Port %c\n", 'B'+i);
+		for (j = 0; j < PORT_PINS; j++)
+			printk("  Pin %d = %d\n", j, pins[i][j]);
+	}
+}
+
+__initcall(crisv32_pinmux_init);
diff --git a/arch/cris/arch-v32/kernel/process.c b/arch/cris/arch-v32/kernel/process.c
new file mode 100644
index 00000000000..882be42114f
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/process.c
@@ -0,0 +1,270 @@
+/*
+ *  Copyright (C) 2000-2003  Axis Communications AB
+ *
+ *  Authors:   Bjorn Wesen (bjornw@axis.com)
+ *             Mikael Starvik (starvik@axis.com)
+ *             Tobias Anderberg (tobiasa@axis.com), CRISv32 port.
+ *
+ * This file handles the architecture-dependent parts of process handling..
+ */
+
+#include <linux/config.h>
+#include <linux/sched.h>
+#include <linux/err.h>
+#include <linux/fs.h>
+#include <linux/slab.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/timer_defs.h>
+#include <asm/arch/hwregs/intr_vect_defs.h>
+
+extern void stop_watchdog(void);
+
+#ifdef CONFIG_ETRAX_GPIO
+extern void etrax_gpio_wake_up_check(void); /* Defined in drivers/gpio.c. */
+#endif
+
+extern int cris_hlt_counter;
+
+/* We use this if we don't have any better idle routine. */
+void default_idle(void)
+{
+	local_irq_disable();
+	if (!need_resched() && !cris_hlt_counter) {
+	        /* Halt until exception. */
+		__asm__ volatile("ei    \n\t"
+                                 "halt      ");
+	}
+	local_irq_enable();
+}
+
+/*
+ * Free current thread data structures etc..
+ */
+
+extern void deconfigure_bp(long pid);
+void exit_thread(void)
+{
+	deconfigure_bp(current->pid);
+}
+
+/*
+ * If the watchdog is enabled, disable interrupts and enter an infinite loop.
+ * The watchdog will reset the CPU after 0.1s. If the watchdog isn't enabled
+ * then enable it and wait.
+ */
+extern void arch_enable_nmi(void);
+
+void
+hard_reset_now(void)
+{
+	/*
+	 * Don't declare this variable elsewhere.  We don't want any other
+	 * code to know about it than the watchdog handler in entry.S and
+	 * this code, implementing hard reset through the watchdog.
+	 */
+#if defined(CONFIG_ETRAX_WATCHDOG)
+	extern int cause_of_death;
+#endif
+
+	printk("*** HARD RESET ***\n");
+	local_irq_disable();
+
+#if defined(CONFIG_ETRAX_WATCHDOG)
+	cause_of_death = 0xbedead;
+#else
+{
+	reg_timer_rw_wd_ctrl wd_ctrl = {0};
+
+	stop_watchdog();
+
+	wd_ctrl.key = 16;	/* Arbitrary key. */
+	wd_ctrl.cnt = 1;	/* Minimum time. */
+	wd_ctrl.cmd = regk_timer_start;
+
+        arch_enable_nmi();
+	REG_WR(timer, regi_timer, rw_wd_ctrl, wd_ctrl);
+}
+#endif
+
+	while (1)
+		; /* Wait for reset. */
+}
+
+/*
+ * Return saved PC of a blocked thread.
+ */
+unsigned long thread_saved_pc(struct task_struct *t)
+{
+	return (unsigned long)user_regs(t->thread_info)->erp;
+}
+
+static void
+kernel_thread_helper(void* dummy, int (*fn)(void *), void * arg)
+{
+	fn(arg);
+	do_exit(-1); /* Should never be called, return bad exit value. */
+}
+
+/* Create a kernel thread. */
+int
+kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
+{
+	struct pt_regs regs;
+
+	memset(&regs, 0, sizeof(regs));
+
+        /* Don't use r10 since that is set to 0 in copy_thread. */
+	regs.r11 = (unsigned long) fn;
+	regs.r12 = (unsigned long) arg;
+	regs.erp = (unsigned long) kernel_thread_helper;
+	regs.ccs = 1 << (I_CCS_BITNR + CCS_SHIFT);
+
+	/* Create the new process. */
+        return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
+}
+
+/*
+ * Setup the child's kernel stack with a pt_regs and call switch_stack() on it.
+ * It will be unnested during _resume and _ret_from_sys_call when the new thread
+ * is scheduled.
+ *
+ * Also setup the thread switching structure which is used to keep
+ * thread-specific data during _resumes.
+ */
+
+extern asmlinkage void ret_from_fork(void);
+
+int
+copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
+	unsigned long unused,
+	struct task_struct *p, struct pt_regs *regs)
+{
+	struct pt_regs *childregs;
+	struct switch_stack *swstack;
+
+	/*
+	 * Put the pt_regs structure at the end of the new kernel stack page and
+	 * fix it up. Note: the task_struct doubles as the kernel stack for the
+	 * task.
+	 */
+	childregs = user_regs(p->thread_info);
+	*childregs = *regs;	/* Struct copy of pt_regs. */
+        p->set_child_tid = p->clear_child_tid = NULL;
+        childregs->r10 = 0;	/* Child returns 0 after a fork/clone. */
+
+	/* Set a new TLS ?
+	 * The TLS is in $mof beacuse it is the 5th argument to sys_clone.
+	 */
+	if (p->mm && (clone_flags & CLONE_SETTLS)) {
+		p->thread_info->tls = regs->mof;
+	}
+
+	/* Put the switch stack right below the pt_regs. */
+	swstack = ((struct switch_stack *) childregs) - 1;
+
+	/* Paramater to ret_from_sys_call. 0 is don't restart the syscall. */
+	swstack->r9 = 0;
+
+	/*
+	 * We want to return into ret_from_sys_call after the _resume.
+	 * ret_from_fork will call ret_from_sys_call.
+	 */
+	swstack->return_ip = (unsigned long) ret_from_fork;
+
+	/* Fix the user-mode and kernel-mode stackpointer. */
+	p->thread.usp = usp;
+	p->thread.ksp = (unsigned long) swstack;
+
+	return 0;
+}
+
+/*
+ * Be aware of the "magic" 7th argument in the four system-calls below.
+ * They need the latest stackframe, which is put as the 7th argument by
+ * entry.S. The previous arguments are dummies or actually used, but need
+ * to be defined to reach the 7th argument.
+ *
+ * N.B.: Another method to get the stackframe is to use current_regs(). But
+ * it returns the latest stack-frame stacked when going from _user mode_ and
+ * some of these (at least sys_clone) are called from kernel-mode sometimes
+ * (for example during kernel_thread, above) and thus cannot use it. Thus,
+ * to be sure not to get any surprises, we use the method for the other calls
+ * as well.
+ */
+asmlinkage int
+sys_fork(long r10, long r11, long r12, long r13, long mof, long srp,
+	struct pt_regs *regs)
+{
+	return do_fork(SIGCHLD, rdusp(), regs, 0, NULL, NULL);
+}
+
+/* FIXME: Is parent_tid/child_tid really third/fourth argument? Update lib? */
+asmlinkage int
+sys_clone(unsigned long newusp, unsigned long flags, int *parent_tid, int *child_tid,
+	unsigned long tls, long srp, struct pt_regs *regs)
+{
+	if (!newusp)
+		newusp = rdusp();
+
+	return do_fork(flags, newusp, regs, 0, parent_tid, child_tid);
+}
+
+/*
+ * vfork is a system call in i386 because of register-pressure - maybe
+ * we can remove it and handle it in libc but we put it here until then.
+ */
+asmlinkage int
+sys_vfork(long r10, long r11, long r12, long r13, long mof, long srp,
+	struct pt_regs *regs)
+{
+	return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0, NULL, NULL);
+}
+
+/* sys_execve() executes a new program. */
+asmlinkage int
+sys_execve(const char *fname, char **argv, char **envp, long r13, long mof, long srp,
+	struct pt_regs *regs)
+{
+	int error;
+	char *filename;
+
+	filename = getname(fname);
+	error = PTR_ERR(filename);
+
+	if (IS_ERR(filename))
+	        goto out;
+
+	error = do_execve(filename, argv, envp, regs);
+	putname(filename);
+ out:
+	return error;
+}
+
+unsigned long
+get_wchan(struct task_struct *p)
+{
+	/* TODO */
+	return 0;
+}
+#undef last_sched
+#undef first_sched
+
+void show_regs(struct pt_regs * regs)
+{
+	unsigned long usp = rdusp();
+        printk("ERP: %08lx SRP: %08lx  CCS: %08lx USP: %08lx MOF: %08lx\n",
+		regs->erp, regs->srp, regs->ccs, usp, regs->mof);
+
+	printk(" r0: %08lx  r1: %08lx   r2: %08lx  r3: %08lx\n",
+		regs->r0, regs->r1, regs->r2, regs->r3);
+
+	printk(" r4: %08lx  r5: %08lx   r6: %08lx  r7: %08lx\n",
+		regs->r4, regs->r5, regs->r6, regs->r7);
+
+	printk(" r8: %08lx  r9: %08lx  r10: %08lx r11: %08lx\n",
+		regs->r8, regs->r9, regs->r10, regs->r11);
+
+	printk("r12: %08lx r13: %08lx oR10: %08lx\n",
+		regs->r12, regs->r13, regs->orig_r10);
+}
diff --git a/arch/cris/arch-v32/kernel/ptrace.c b/arch/cris/arch-v32/kernel/ptrace.c
new file mode 100644
index 00000000000..208489da2a8
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/ptrace.c
@@ -0,0 +1,597 @@
+/*
+ * Copyright (C) 2000-2003, Axis Communications AB.
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+#include <linux/signal.h>
+#include <linux/security.h>
+
+#include <asm/uaccess.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+#include <asm/arch/hwregs/supp_reg.h>
+
+/*
+ * Determines which bits in CCS the user has access to.
+ * 1 = access, 0 = no access.
+ */
+#define CCS_MASK 0x00087c00     /* SXNZVC */
+
+#define SBIT_USER (1 << (S_CCS_BITNR + CCS_SHIFT))
+
+static int put_debugreg(long pid, unsigned int regno, long data);
+static long get_debugreg(long pid, unsigned int regno);
+static unsigned long get_pseudo_pc(struct task_struct *child);
+void deconfigure_bp(long pid);
+
+extern unsigned long cris_signal_return_page;
+
+/*
+ * Get contents of register REGNO in task TASK.
+ */
+long get_reg(struct task_struct *task, unsigned int regno)
+{
+	/* USP is a special case, it's not in the pt_regs struct but
+	 * in the tasks thread struct
+	 */
+	unsigned long ret;
+
+	if (regno <= PT_EDA)
+		ret = ((unsigned long *)user_regs(task->thread_info))[regno];
+	else if (regno == PT_USP)
+		ret = task->thread.usp;
+	else if (regno == PT_PPC)
+		ret = get_pseudo_pc(task);
+	else if (regno <= PT_MAX)
+		ret = get_debugreg(task->pid, regno);
+	else
+		ret = 0;
+
+	return ret;
+}
+
+/*
+ * Write contents of register REGNO in task TASK.
+ */
+int put_reg(struct task_struct *task, unsigned int regno, unsigned long data)
+{
+	if (regno <= PT_EDA)
+		((unsigned long *)user_regs(task->thread_info))[regno] = data;
+	else if (regno == PT_USP)
+		task->thread.usp = data;
+	else if (regno == PT_PPC) {
+		/* Write pseudo-PC to ERP only if changed. */
+		if (data != get_pseudo_pc(task))
+			((unsigned long *)user_regs(task->thread_info))[PT_ERP] = data;
+	} else if (regno <= PT_MAX)
+		return put_debugreg(task->pid, regno, data);
+	else
+		return -1;
+	return 0;
+}
+
+/*
+ * Called by kernel/ptrace.c when detaching.
+ *
+ * Make sure the single step bit is not set.
+ */
+void
+ptrace_disable(struct task_struct *child)
+{
+	unsigned long tmp;
+
+	/* Deconfigure SPC and S-bit. */
+	tmp = get_reg(child, PT_CCS) & ~SBIT_USER;
+	put_reg(child, PT_CCS, tmp);
+	put_reg(child, PT_SPC, 0);
+
+	/* Deconfigure any watchpoints associated with the child. */
+	deconfigure_bp(child->pid);
+}
+
+
+asmlinkage int
+sys_ptrace(long request, long pid, long addr, long data)
+{
+	struct task_struct *child;
+	int ret;
+	unsigned long __user *datap = (unsigned long __user *)data;
+
+	lock_kernel();
+	ret = -EPERM;
+
+	if (request == PTRACE_TRACEME) {
+		/* are we already being traced? */
+		if (current->ptrace & PT_PTRACED)
+			goto out;
+		ret = security_ptrace(current->parent, current);
+		if (ret)
+			goto out;
+		/* set the ptrace bit in the process flags. */
+		current->ptrace |= PT_PTRACED;
+		ret = 0;
+		goto out;
+	}
+
+	ret = -ESRCH;
+	read_lock(&tasklist_lock);
+	child = find_task_by_pid(pid);
+
+	if (child)
+		get_task_struct(child);
+
+	read_unlock(&tasklist_lock);
+
+	if (!child)
+		goto out;
+
+	ret = -EPERM;
+
+	if (pid == 1)		/* Leave the init process alone! */
+		goto out_tsk;
+
+	if (request == PTRACE_ATTACH) {
+		ret = ptrace_attach(child);
+		goto out_tsk;
+	}
+
+	ret = ptrace_check_attach(child, request == PTRACE_KILL);
+	if (ret < 0)
+		goto out_tsk;
+
+	switch (request) {
+		/* Read word at location address. */
+		case PTRACE_PEEKTEXT:
+		case PTRACE_PEEKDATA: {
+			unsigned long tmp;
+			int copied;
+
+			ret = -EIO;
+
+			/* The signal trampoline page is outside the normal user-addressable
+			 * space but still accessible. This is hack to make it possible to
+			 * access the signal handler code in GDB.
+			 */
+			if ((addr & PAGE_MASK) == cris_signal_return_page) {
+				/* The trampoline page is globally mapped, no page table to traverse.*/
+				tmp = *(unsigned long*)addr;
+			} else {
+				copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0);
+
+				if (copied != sizeof(tmp))
+					break;
+			}
+
+			ret = put_user(tmp,datap);
+			break;
+		}
+
+		/* Read the word at location address in the USER area. */
+		case PTRACE_PEEKUSR: {
+			unsigned long tmp;
+
+			ret = -EIO;
+			if ((addr & 3) || addr < 0 || addr > PT_MAX << 2)
+				break;
+
+			tmp = get_reg(child, addr >> 2);
+			ret = put_user(tmp, datap);
+			break;
+		}
+
+		/* Write the word at location address. */
+		case PTRACE_POKETEXT:
+		case PTRACE_POKEDATA:
+			ret = 0;
+
+			if (access_process_vm(child, addr, &data, sizeof(data), 1) == sizeof(data))
+				break;
+
+			ret = -EIO;
+			break;
+
+ 		/* Write the word at location address in the USER area. */
+		case PTRACE_POKEUSR:
+			ret = -EIO;
+			if ((addr & 3) || addr < 0 || addr > PT_MAX << 2)
+				break;
+
+			addr >>= 2;
+
+			if (addr == PT_CCS) {
+				/* don't allow the tracing process to change stuff like
+				 * interrupt enable, kernel/user bit, dma enables etc.
+				 */
+				data &= CCS_MASK;
+				data |= get_reg(child, PT_CCS) & ~CCS_MASK;
+			}
+			if (put_reg(child, addr, data))
+				break;
+			ret = 0;
+			break;
+
+		case PTRACE_SYSCALL:
+		case PTRACE_CONT:
+			ret = -EIO;
+
+			if (!valid_signal(data))
+				break;
+
+			/* Continue means no single-step. */
+			put_reg(child, PT_SPC, 0);
+
+			if (!get_debugreg(child->pid, PT_BP_CTRL)) {
+				unsigned long tmp;
+				/* If no h/w bp configured, disable S bit. */
+				tmp = get_reg(child, PT_CCS) & ~SBIT_USER;
+				put_reg(child, PT_CCS, tmp);
+			}
+
+			if (request == PTRACE_SYSCALL) {
+				set_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+			}
+			else {
+				clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+			}
+
+			child->exit_code = data;
+
+			/* TODO: make sure any pending breakpoint is killed */
+			wake_up_process(child);
+			ret = 0;
+
+			break;
+
+ 		/* Make the child exit by sending it a sigkill. */
+		case PTRACE_KILL:
+			ret = 0;
+
+			if (child->exit_state == EXIT_ZOMBIE)
+				break;
+
+			child->exit_code = SIGKILL;
+
+			/* Deconfigure single-step and h/w bp. */
+			ptrace_disable(child);
+
+			/* TODO: make sure any pending breakpoint is killed */
+			wake_up_process(child);
+			break;
+
+		/* Set the trap flag. */
+		case PTRACE_SINGLESTEP:	{
+			unsigned long tmp;
+			ret = -EIO;
+
+			/* Set up SPC if not set already (in which case we have
+			   no other choice but to trust it). */
+			if (!get_reg(child, PT_SPC)) {
+				/* In case we're stopped in a delay slot. */
+				tmp = get_reg(child, PT_ERP) & ~1;
+				put_reg(child, PT_SPC, tmp);
+			}
+			tmp = get_reg(child, PT_CCS) | SBIT_USER;
+			put_reg(child, PT_CCS, tmp);
+
+			if (!valid_signal(data))
+				break;
+
+			clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
+
+			/* TODO: set some clever breakpoint mechanism... */
+
+			child->exit_code = data;
+			wake_up_process(child);
+			ret = 0;
+			break;
+
+		}
+		case PTRACE_DETACH:
+			ret = ptrace_detach(child, data);
+			break;
+
+		/* Get all GP registers from the child. */
+		case PTRACE_GETREGS: {
+		  	int i;
+			unsigned long tmp;
+
+			for (i = 0; i <= PT_MAX; i++) {
+				tmp = get_reg(child, i);
+
+				if (put_user(tmp, datap)) {
+					ret = -EFAULT;
+					goto out_tsk;
+				}
+
+				datap++;
+			}
+
+			ret = 0;
+			break;
+		}
+
+		/* Set all GP registers in the child. */
+		case PTRACE_SETREGS: {
+			int i;
+			unsigned long tmp;
+
+			for (i = 0; i <= PT_MAX; i++) {
+				if (get_user(tmp, datap)) {
+					ret = -EFAULT;
+					goto out_tsk;
+				}
+
+				if (i == PT_CCS) {
+					tmp &= CCS_MASK;
+					tmp |= get_reg(child, PT_CCS) & ~CCS_MASK;
+				}
+
+				put_reg(child, i, tmp);
+				datap++;
+			}
+
+			ret = 0;
+			break;
+		}
+
+		default:
+			ret = ptrace_request(child, request, addr, data);
+			break;
+	}
+out_tsk:
+	put_task_struct(child);
+out:
+	unlock_kernel();
+	return ret;
+}
+
+void do_syscall_trace(void)
+{
+	if (!test_thread_flag(TIF_SYSCALL_TRACE))
+		return;
+
+	if (!(current->ptrace & PT_PTRACED))
+		return;
+
+	/* the 0x80 provides a way for the tracing parent to distinguish
+	   between a syscall stop and SIGTRAP delivery */
+	ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD)
+				 ? 0x80 : 0));
+
+	/*
+	 * This isn't the same as continuing with a signal, but it will do for
+	 * normal use.
+	 */
+	if (current->exit_code) {
+		send_sig(current->exit_code, current, 1);
+		current->exit_code = 0;
+	}
+}
+
+/* Returns the size of an instruction that has a delay slot. */
+
+static int insn_size(struct task_struct *child, unsigned long pc)
+{
+  unsigned long opcode;
+  int copied;
+  int opsize = 0;
+
+  /* Read the opcode at pc (do what PTRACE_PEEKTEXT would do). */
+  copied = access_process_vm(child, pc, &opcode, sizeof(opcode), 0);
+  if (copied != sizeof(opcode))
+    return 0;
+
+  switch ((opcode & 0x0f00) >> 8) {
+  case 0x0:
+  case 0x9:
+  case 0xb:
+	  opsize = 2;
+	  break;
+  case 0xe:
+  case 0xf:
+	  opsize = 6;
+	  break;
+  case 0xd:
+	  /* Could be 4 or 6; check more bits. */
+	  if ((opcode & 0xff) == 0xff)
+		  opsize = 4;
+	  else
+		  opsize = 6;
+	  break;
+  default:
+	  panic("ERROR: Couldn't find size of opcode 0x%lx at 0x%lx\n",
+		opcode, pc);
+  }
+
+  return opsize;
+}
+
+static unsigned long get_pseudo_pc(struct task_struct *child)
+{
+	/* Default value for PC is ERP. */
+	unsigned long pc = get_reg(child, PT_ERP);
+
+	if (pc & 0x1) {
+		unsigned long spc = get_reg(child, PT_SPC);
+		/* Delay slot bit set. Report as stopped on proper
+		   instruction. */
+		if (spc) {
+			/* Rely on SPC if set. FIXME: We might want to check
+			   that EXS indicates we stopped due to a single-step
+			   exception. */
+			pc = spc;
+		} else {
+			/* Calculate the PC from the size of the instruction
+			   that the delay slot we're in belongs to. */
+			pc += insn_size(child, pc & ~1) - 1;
+		}
+	}
+	return pc;
+}
+
+static long bp_owner = 0;
+
+/* Reachable from exit_thread in signal.c, so not static. */
+void deconfigure_bp(long pid)
+{
+	int bp;
+
+	/* Only deconfigure if the pid is the owner. */
+	if (bp_owner != pid)
+		return;
+
+	for (bp = 0; bp < 6; bp++) {
+		unsigned long tmp;
+		/* Deconfigure start and end address (also gets rid of ownership). */
+		put_debugreg(pid, PT_BP + 3 + (bp * 2), 0);
+		put_debugreg(pid, PT_BP + 4 + (bp * 2), 0);
+
+		/* Deconfigure relevant bits in control register. */
+		tmp = get_debugreg(pid, PT_BP_CTRL) & ~(3 << (2 + (bp * 4)));
+		put_debugreg(pid, PT_BP_CTRL, tmp);
+	}
+	/* No owner now. */
+	bp_owner = 0;
+}
+
+static int put_debugreg(long pid, unsigned int regno, long data)
+{
+	int ret = 0;
+	register int old_srs;
+
+#ifdef CONFIG_ETRAX_KGDB
+	/* Ignore write, but pretend it was ok if value is 0
+	   (we don't want POKEUSR/SETREGS failing unnessecarily). */
+	return (data == 0) ? ret : -1;
+#endif
+
+	/* Simple owner management. */
+	if (!bp_owner)
+		bp_owner = pid;
+	else if (bp_owner != pid) {
+		/* Ignore write, but pretend it was ok if value is 0
+		   (we don't want POKEUSR/SETREGS failing unnessecarily). */
+		return (data == 0) ? ret : -1;
+	}
+
+	/* Remember old SRS. */
+	SPEC_REG_RD(SPEC_REG_SRS, old_srs);
+	/* Switch to BP bank. */
+	SUPP_BANK_SEL(BANK_BP);
+
+	switch (regno - PT_BP) {
+	case 0:
+		SUPP_REG_WR(0, data); break;
+	case 1:
+	case 2:
+		if (data)
+			ret = -1;
+		break;
+	case 3:
+		SUPP_REG_WR(3, data); break;
+	case 4:
+		SUPP_REG_WR(4, data); break;
+	case 5:
+		SUPP_REG_WR(5, data); break;
+	case 6:
+		SUPP_REG_WR(6, data); break;
+	case 7:
+		SUPP_REG_WR(7, data); break;
+	case 8:
+		SUPP_REG_WR(8, data); break;
+	case 9:
+		SUPP_REG_WR(9, data); break;
+	case 10:
+		SUPP_REG_WR(10, data); break;
+	case 11:
+		SUPP_REG_WR(11, data); break;
+	case 12:
+		SUPP_REG_WR(12, data); break;
+	case 13:
+		SUPP_REG_WR(13, data); break;
+	case 14:
+		SUPP_REG_WR(14, data); break;
+	default:
+		ret = -1;
+		break;
+	}
+
+	/* Restore SRS. */
+	SPEC_REG_WR(SPEC_REG_SRS, old_srs);
+	/* Just for show. */
+	NOP();
+	NOP();
+	NOP();
+
+	return ret;
+}
+
+static long get_debugreg(long pid, unsigned int regno)
+{
+	register int old_srs;
+	register long data;
+
+	if (pid != bp_owner) {
+		return 0;
+	}
+
+	/* Remember old SRS. */
+	SPEC_REG_RD(SPEC_REG_SRS, old_srs);
+	/* Switch to BP bank. */
+	SUPP_BANK_SEL(BANK_BP);
+
+	switch (regno - PT_BP) {
+	case 0:
+		SUPP_REG_RD(0, data); break;
+	case 1:
+	case 2:
+		/* error return value? */
+		data = 0;
+		break;
+	case 3:
+		SUPP_REG_RD(3, data); break;
+	case 4:
+		SUPP_REG_RD(4, data); break;
+	case 5:
+		SUPP_REG_RD(5, data); break;
+	case 6:
+		SUPP_REG_RD(6, data); break;
+	case 7:
+		SUPP_REG_RD(7, data); break;
+	case 8:
+		SUPP_REG_RD(8, data); break;
+	case 9:
+		SUPP_REG_RD(9, data); break;
+	case 10:
+		SUPP_REG_RD(10, data); break;
+	case 11:
+		SUPP_REG_RD(11, data); break;
+	case 12:
+		SUPP_REG_RD(12, data); break;
+	case 13:
+		SUPP_REG_RD(13, data); break;
+	case 14:
+		SUPP_REG_RD(14, data); break;
+	default:
+		/* error return value? */
+		data = 0;
+	}
+
+	/* Restore SRS. */
+	SPEC_REG_WR(SPEC_REG_SRS, old_srs);
+	/* Just for show. */
+	NOP();
+	NOP();
+	NOP();
+
+	return data;
+}
diff --git a/arch/cris/arch-v32/kernel/setup.c b/arch/cris/arch-v32/kernel/setup.c
new file mode 100644
index 00000000000..b17a39a2e16
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/setup.c
@@ -0,0 +1,118 @@
+/*
+ * Display CPU info in /proc/cpuinfo.
+ *
+ * Copyright (C) 2003, Axis Communications AB.
+ */
+
+#include <linux/config.h>
+#include <linux/seq_file.h>
+#include <linux/proc_fs.h>
+#include <linux/delay.h>
+#include <linux/param.h>
+
+#ifdef CONFIG_PROC_FS
+
+#define HAS_FPU         0x0001
+#define HAS_MMU         0x0002
+#define HAS_ETHERNET100 0x0004
+#define HAS_TOKENRING   0x0008
+#define HAS_SCSI        0x0010
+#define HAS_ATA         0x0020
+#define HAS_USB         0x0040
+#define HAS_IRQ_BUG     0x0080
+#define HAS_MMU_BUG     0x0100
+
+struct cpu_info {
+	char *cpu_model;
+	unsigned short rev;
+	unsigned short cache_size;
+	unsigned short flags;
+};
+
+/* Some of these model are here for historical reasons only. */
+static struct cpu_info cpinfo[] = {
+	{"ETRAX 1", 0, 0, 0},
+	{"ETRAX 2", 1, 0, 0},
+	{"ETRAX 3", 2, 0, 0},
+	{"ETRAX 4", 3, 0, 0},
+	{"Simulator", 7, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA},
+	{"ETRAX 100", 8, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_IRQ_BUG},
+	{"ETRAX 100", 9, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA},
+
+	{"ETRAX 100LX", 10, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_USB
+			     | HAS_MMU | HAS_MMU_BUG},
+
+	{"ETRAX 100LX v2", 11, 8, HAS_ETHERNET100 | HAS_SCSI | HAS_ATA | HAS_USB
+			        | HAS_MMU},
+
+	{"ETRAX FS", 32, 32, HAS_ETHERNET100 | HAS_ATA | HAS_MMU},
+
+	{"Unknown", 0, 0, 0}
+};
+
+int
+show_cpuinfo(struct seq_file *m, void *v)
+{
+	int i;
+	int cpu = (int)v - 1;
+	int entries;
+	unsigned long revision;
+	struct cpu_info *info;
+
+	entries = sizeof cpinfo / sizeof(struct cpu_info);
+	info = &cpinfo[entries - 1];
+
+#ifdef CONFIG_SMP
+	if (!cpu_online(cpu))
+		return 0;
+#endif
+
+	revision = rdvr();
+
+	for (i = 0; i < entries; i++) {
+		if (cpinfo[i].rev == revision) {
+			info = &cpinfo[i];
+			break;
+		}
+	}
+
+	return seq_printf(m,
+		"processor\t: %d\n"
+		"cpu\t\t: CRIS\n"
+		"cpu revision\t: %lu\n"
+		"cpu model\t: %s\n"
+		"cache size\t: %d KB\n"
+		"fpu\t\t: %s\n"
+		"mmu\t\t: %s\n"
+		"mmu DMA bug\t: %s\n"
+		"ethernet\t: %s Mbps\n"
+		"token ring\t: %s\n"
+		"scsi\t\t: %s\n"
+		"ata\t\t: %s\n"
+		"usb\t\t: %s\n"
+		"bogomips\t: %lu.%02lu\n\n",
+
+		cpu,
+		revision,
+		info->cpu_model,
+		info->cache_size,
+		info->flags & HAS_FPU ? "yes" : "no",
+		info->flags & HAS_MMU ? "yes" : "no",
+		info->flags & HAS_MMU_BUG ? "yes" : "no",
+		info->flags & HAS_ETHERNET100 ? "10/100" : "10",
+		info->flags & HAS_TOKENRING ? "4/16 Mbps" : "no",
+		info->flags & HAS_SCSI ? "yes" : "no",
+		info->flags & HAS_ATA ? "yes" : "no",
+		info->flags & HAS_USB ? "yes" : "no",
+		(loops_per_jiffy * HZ + 500) / 500000,
+		((loops_per_jiffy * HZ + 500) / 5000) % 100);
+}
+
+#endif /* CONFIG_PROC_FS */
+
+void
+show_etrax_copyright(void)
+{
+	printk(KERN_INFO
+               "Linux/CRISv32 port on ETRAX FS (C) 2003, 2004 Axis Communications AB\n");
+}
diff --git a/arch/cris/arch-v32/kernel/signal.c b/arch/cris/arch-v32/kernel/signal.c
new file mode 100644
index 00000000000..fb4c79d5b76
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/signal.c
@@ -0,0 +1,708 @@
+/*
+ * Copyright (C) 2003, Axis Communications AB.
+ */
+
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/errno.h>
+#include <linux/wait.h>
+#include <linux/ptrace.h>
+#include <linux/unistd.h>
+#include <linux/stddef.h>
+#include <linux/syscalls.h>
+#include <linux/vmalloc.h>
+
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/ucontext.h>
+#include <asm/uaccess.h>
+#include <asm/arch/ptrace.h>
+#include <asm/arch/hwregs/cpu_vect.h>
+
+extern unsigned long cris_signal_return_page;
+
+/* Flag to check if a signal is blockable. */
+#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
+
+/*
+ * A syscall in CRIS is really a "break 13" instruction, which is 2
+ * bytes. The registers is manipulated so upon return the instruction
+ * will be executed again.
+ *
+ * This relies on that PC points to the instruction after the break call.
+ */
+#define RESTART_CRIS_SYS(regs) regs->r10 = regs->orig_r10; regs->erp -= 2;
+
+/* Signal frames. */
+struct signal_frame {
+	struct sigcontext sc;
+	unsigned long extramask[_NSIG_WORDS - 1];
+	unsigned char retcode[8];	/* Trampoline code. */
+};
+
+struct rt_signal_frame {
+	struct siginfo *pinfo;
+	void *puc;
+	struct siginfo info;
+	struct ucontext uc;
+	unsigned char retcode[8];	/* Trampoline code. */
+};
+
+int do_signal(int restart, sigset_t *oldset, struct pt_regs *regs);
+void keep_debug_flags(unsigned long oldccs, unsigned long oldspc,
+		      struct pt_regs *regs);
+/*
+ * Swap in the new signal mask, and wait for a signal. Define some
+ * dummy arguments to be able to reach the regs argument.
+ */
+int
+sys_sigsuspend(old_sigset_t mask, long r11, long r12, long r13, long mof,
+	       long srp, struct pt_regs *regs)
+{
+	sigset_t saveset;
+
+	mask &= _BLOCKABLE;
+
+	spin_lock_irq(&current->sighand->siglock);
+
+	saveset = current->blocked;
+
+	siginitset(&current->blocked, mask);
+
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	regs->r10 = -EINTR;
+
+	while (1) {
+		current->state = TASK_INTERRUPTIBLE;
+		schedule();
+
+		if (do_signal(0, &saveset, regs)) {
+			/*
+			 * This point is reached twice: once to call
+			 * the signal handler, then again to return
+			 * from the sigsuspend system call. When
+			 * calling the signal handler, R10 hold the
+			 * signal number as set by do_signal(). The
+			 * sigsuspend  call will always return with
+			 * the restored value above; -EINTR.
+			 */
+			return regs->r10;
+		}
+	}
+}
+
+/* Define some dummy arguments to be able to reach the regs argument. */
+int
+sys_rt_sigsuspend(sigset_t *unewset, size_t sigsetsize, long r12, long r13,
+		  long mof, long srp, struct pt_regs *regs)
+{
+	sigset_t saveset;
+	sigset_t newset;
+
+	if (sigsetsize != sizeof(sigset_t))
+		return -EINVAL;
+
+	if (copy_from_user(&newset, unewset, sizeof(newset)))
+		return -EFAULT;
+
+	sigdelsetmask(&newset, ~_BLOCKABLE);
+	spin_lock_irq(&current->sighand->siglock);
+
+	saveset = current->blocked;
+	current->blocked = newset;
+
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	regs->r10 = -EINTR;
+
+	while (1) {
+		current->state = TASK_INTERRUPTIBLE;
+		schedule();
+
+		if (do_signal(0, &saveset, regs)) {
+			/* See comment in function above. */
+			return regs->r10;
+		}
+	}
+}
+
+int
+sys_sigaction(int signal, const struct old_sigaction *act,
+	      struct old_sigaction *oact)
+{
+	int retval;
+	struct k_sigaction newk;
+	struct k_sigaction oldk;
+
+	if (act) {
+		old_sigset_t mask;
+
+		if (!access_ok(VERIFY_READ, act, sizeof(*act)) ||
+		    __get_user(newk.sa.sa_handler, &act->sa_handler) ||
+		    __get_user(newk.sa.sa_restorer, &act->sa_restorer))
+			return -EFAULT;
+
+		__get_user(newk.sa.sa_flags, &act->sa_flags);
+		__get_user(mask, &act->sa_mask);
+		siginitset(&newk.sa.sa_mask, mask);
+	}
+
+	retval = do_sigaction(signal, act ? &newk : NULL, oact ? &oldk : NULL);
+
+	if (!retval && oact) {
+		if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) ||
+		    __put_user(oldk.sa.sa_handler, &oact->sa_handler) ||
+		    __put_user(oldk.sa.sa_restorer, &oact->sa_restorer))
+			return -EFAULT;
+
+		__put_user(oldk.sa.sa_flags, &oact->sa_flags);
+		__put_user(oldk.sa.sa_mask.sig[0], &oact->sa_mask);
+	}
+
+	return retval;
+}
+
+int
+sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
+{
+	return do_sigaltstack(uss, uoss, rdusp());
+}
+
+static int
+restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
+{
+	unsigned int err = 0;
+	unsigned long old_usp;
+
+        /* Always make any pending restarted system calls return -EINTR */
+	current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
+	/*
+	 * Restore the registers from &sc->regs. sc is already checked
+	 * for VERIFY_READ since the signal_frame was previously
+	 * checked in sys_sigreturn().
+	 */
+	if (__copy_from_user(regs, sc, sizeof(struct pt_regs)))
+		goto badframe;
+
+	/* Make that the user-mode flag is set. */
+	regs->ccs |= (1 << (U_CCS_BITNR + CCS_SHIFT));
+
+	/* Restore the old USP. */
+	err |= __get_user(old_usp, &sc->usp);
+	wrusp(old_usp);
+
+	return err;
+
+badframe:
+	return 1;
+}
+
+/* Define some dummy arguments to be able to reach the regs argument. */
+asmlinkage int
+sys_sigreturn(long r10, long r11, long r12, long r13, long mof, long srp,
+	      struct pt_regs *regs)
+{
+	sigset_t set;
+	struct signal_frame __user *frame;
+	unsigned long oldspc = regs->spc;
+	unsigned long oldccs = regs->ccs;
+
+	frame = (struct signal_frame *) rdusp();
+
+	/*
+	 * Since the signal is stacked on a dword boundary, the frame
+	 * should be dword aligned here as well. It it's not, then the
+	 * user is trying some funny business.
+	 */
+	if (((long)frame) & 3)
+		goto badframe;
+
+	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+		goto badframe;
+
+	if (__get_user(set.sig[0], &frame->sc.oldmask) ||
+	    (_NSIG_WORDS > 1 && __copy_from_user(&set.sig[1],
+						 frame->extramask,
+						 sizeof(frame->extramask))))
+		goto badframe;
+
+	sigdelsetmask(&set, ~_BLOCKABLE);
+	spin_lock_irq(&current->sighand->siglock);
+
+	current->blocked = set;
+
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	if (restore_sigcontext(regs, &frame->sc))
+		goto badframe;
+
+	keep_debug_flags(oldccs, oldspc, regs);
+
+	return regs->r10;
+
+badframe:
+	force_sig(SIGSEGV, current);
+	return 0;
+}
+
+/* Define some dummy variables to be able to reach the regs argument. */
+asmlinkage int
+sys_rt_sigreturn(long r10, long r11, long r12, long r13, long mof, long srp,
+		 struct pt_regs *regs)
+{
+	sigset_t set;
+	struct rt_signal_frame __user *frame;
+	unsigned long oldspc = regs->spc;
+	unsigned long oldccs = regs->ccs;
+
+	frame = (struct rt_signal_frame *) rdusp();
+
+	/*
+	 * Since the signal is stacked on a dword boundary, the frame
+	 * should be dword aligned here as well. It it's not, then the
+	 * user is trying some funny business.
+	 */
+	if (((long)frame) & 3)
+		goto badframe;
+
+	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
+		goto badframe;
+
+	if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
+		goto badframe;
+
+	sigdelsetmask(&set, ~_BLOCKABLE);
+	spin_lock_irq(&current->sighand->siglock);
+
+	current->blocked = set;
+
+	recalc_sigpending();
+	spin_unlock_irq(&current->sighand->siglock);
+
+	if (restore_sigcontext(regs, &frame->uc.uc_mcontext))
+		goto badframe;
+
+	if (do_sigaltstack(&frame->uc.uc_stack, NULL, rdusp()) == -EFAULT)
+ 		goto badframe;
+
+	keep_debug_flags(oldccs, oldspc, regs);
+
+	return regs->r10;
+
+badframe:
+	force_sig(SIGSEGV, current);
+	return 0;
+}
+
+/* Setup a signal frame. */
+static int
+setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
+		 unsigned long mask)
+{
+	int err;
+	unsigned long usp;
+
+	err = 0;
+	usp = rdusp();
+
+	/*
+	 * Copy the registers. They are located first in sc, so it's
+	 * possible to use sc directly.
+	 */
+	err |= __copy_to_user(sc, regs, sizeof(struct pt_regs));
+
+	err |= __put_user(mask, &sc->oldmask);
+	err |= __put_user(usp, &sc->usp);
+
+	return err;
+}
+
+/* Figure out where to put the new signal frame - usually on the stack. */
+static inline void __user *
+get_sigframe(struct k_sigaction *ka, struct pt_regs * regs, size_t frame_size)
+{
+	unsigned long sp;
+
+	sp = rdusp();
+
+	/* This is the X/Open sanctioned signal stack switching. */
+	if (ka->sa.sa_flags & SA_ONSTACK) {
+		if (!on_sig_stack(sp))
+			sp = current->sas_ss_sp + current->sas_ss_size;
+	}
+
+	/* Make sure the frame is dword-aligned. */
+	sp &= ~3;
+
+	return (void __user *)(sp - frame_size);
+}
+
+/* Grab and setup a signal frame.
+ *
+ * Basically a lot of state-info is stacked, and arranged for the
+ * user-mode program to return to the kernel using either a trampiline
+ * which performs the syscall sigreturn(), or a provided user-mode
+ * trampoline.
+  */
+static void
+setup_frame(int sig, struct k_sigaction *ka,  sigset_t *set,
+	    struct pt_regs * regs)
+{
+	int err;
+	unsigned long return_ip;
+	struct signal_frame __user *frame;
+
+	err = 0;
+	frame = get_sigframe(ka, regs, sizeof(*frame));
+
+	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+		goto give_sigsegv;
+
+	err |= setup_sigcontext(&frame->sc, regs, set->sig[0]);
+
+	if (err)
+		goto give_sigsegv;
+
+	if (_NSIG_WORDS > 1) {
+		err |= __copy_to_user(frame->extramask, &set->sig[1],
+				      sizeof(frame->extramask));
+	}
+
+	if (err)
+		goto give_sigsegv;
+
+	/*
+	 * Set up to return from user-space. If provided, use a stub
+	 * already located in user-space.
+	 */
+	if (ka->sa.sa_flags & SA_RESTORER) {
+		return_ip = (unsigned long)ka->sa.sa_restorer;
+	} else {
+		/* Trampoline - the desired return ip is in the signal return page. */
+		return_ip = cris_signal_return_page;
+
+		/*
+		 * This is movu.w __NR_sigreturn, r9; break 13;
+		 *
+		 * WE DO NOT USE IT ANY MORE! It's only left here for historical
+		 * reasons and because gdb uses it as a signature to notice
+		 * signal handler stack frames.
+		 */
+		err |= __put_user(0x9c5f,         (short __user*)(frame->retcode+0));
+		err |= __put_user(__NR_sigreturn, (short __user*)(frame->retcode+2));
+		err |= __put_user(0xe93d,         (short __user*)(frame->retcode+4));
+	}
+
+	if (err)
+		goto give_sigsegv;
+
+	/*
+	 * Set up registers for signal handler.
+	 *
+	 * Where the code enters now.
+	 * Where the code enter later.
+	 * First argument, signo.
+	 */
+	regs->erp = (unsigned long) ka->sa.sa_handler;
+	regs->srp = return_ip;
+	regs->r10 = sig;
+
+	/* Actually move the USP to reflect the stacked frame. */
+	wrusp((unsigned long)frame);
+
+	return;
+
+give_sigsegv:
+	if (sig == SIGSEGV)
+		ka->sa.sa_handler = SIG_DFL;
+
+	force_sig(SIGSEGV, current);
+}
+
+static void
+setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
+	       sigset_t *set, struct pt_regs * regs)
+{
+	int err;
+	unsigned long return_ip;
+	struct rt_signal_frame __user *frame;
+
+	err = 0;
+	frame = get_sigframe(ka, regs, sizeof(*frame));
+
+	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
+		goto give_sigsegv;
+
+	/* TODO: what is the current->exec_domain stuff and invmap ? */
+
+	err |= __put_user(&frame->info, &frame->pinfo);
+	err |= __put_user(&frame->uc, &frame->puc);
+	err |= copy_siginfo_to_user(&frame->info, info);
+
+	if (err)
+		goto give_sigsegv;
+
+	/* Clear all the bits of the ucontext we don't use.  */
+	err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));
+	err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
+	err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+
+	if (err)
+		goto give_sigsegv;
+
+	/*
+	 * Set up to return from user-space. If provided, use a stub
+	 * already located in user-space.
+	 */
+	if (ka->sa.sa_flags & SA_RESTORER) {
+		return_ip = (unsigned long) ka->sa.sa_restorer;
+	} else {
+		/* Trampoline - the desired return ip is in the signal return page. */
+		return_ip = cris_signal_return_page + 6;
+
+		/*
+		 * This is movu.w __NR_rt_sigreturn, r9; break 13;
+		 *
+		 * WE DO NOT USE IT ANY MORE! It's only left here for historical
+		 * reasons and because gdb uses it as a signature to notice
+		 * signal handler stack frames.
+		 */
+		err |= __put_user(0x9c5f, (short __user*)(frame->retcode+0));
+
+		err |= __put_user(__NR_rt_sigreturn,
+				  (short __user*)(frame->retcode+2));
+
+		err |= __put_user(0xe93d, (short __user*)(frame->retcode+4));
+	}
+
+	if (err)
+		goto give_sigsegv;
+
+	/*
+	 * Set up registers for signal handler.
+	 *
+	 * Where the code enters now.
+	 * Where the code enters later.
+	 * First argument is signo.
+	 * Second argument is (siginfo_t *).
+	 * Third argument is unused.
+	 */
+	regs->erp = (unsigned long) ka->sa.sa_handler;
+	regs->srp = return_ip;
+	regs->r10 = sig;
+	regs->r11 = (unsigned long) &frame->info;
+	regs->r12 = 0;
+
+	/* Actually move the usp to reflect the stacked frame. */
+	wrusp((unsigned long)frame);
+
+	return;
+
+give_sigsegv:
+	if (sig == SIGSEGV)
+		ka->sa.sa_handler = SIG_DFL;
+
+	force_sig(SIGSEGV, current);
+}
+
+/* Invoke a singal handler to, well, handle the signal. */
+extern inline void
+handle_signal(int canrestart, unsigned long sig,
+	      siginfo_t *info, struct k_sigaction *ka,
+              sigset_t *oldset, struct pt_regs * regs)
+{
+	/* Check if this got called from a system call. */
+	if (canrestart) {
+		/* If so, check system call restarting. */
+		switch (regs->r10) {
+			case -ERESTART_RESTARTBLOCK:
+			case -ERESTARTNOHAND:
+				/*
+				 * This means that the syscall should
+				 * only be restarted if there was no
+				 * handler for the signal, and since
+				 * this point isn't reached unless
+				 * there is a handler, there's no need
+				 * to restart.
+				 */
+				regs->r10 = -EINTR;
+				break;
+
+                        case -ERESTARTSYS:
+				/*
+				 * This means restart the syscall if
+                                 * there is no handler, or the handler
+                                 * was registered with SA_RESTART.
+				 */
+				if (!(ka->sa.sa_flags & SA_RESTART)) {
+					regs->r10 = -EINTR;
+					break;
+				}
+
+				/* Fall through. */
+
+			case -ERESTARTNOINTR:
+				/*
+				 * This means that the syscall should
+                                 * be called again after the signal
+                                 * handler returns.
+				 */
+				RESTART_CRIS_SYS(regs);
+				break;
+                }
+        }
+
+	/* Set up the stack frame. */
+	if (ka->sa.sa_flags & SA_SIGINFO)
+		setup_rt_frame(sig, ka, info, oldset, regs);
+	else
+		setup_frame(sig, ka, oldset, regs);
+
+	if (ka->sa.sa_flags & SA_ONESHOT)
+		ka->sa.sa_handler = SIG_DFL;
+
+	if (!(ka->sa.sa_flags & SA_NODEFER)) {
+		spin_lock_irq(&current->sighand->siglock);
+		sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
+		sigaddset(&current->blocked,sig);
+		recalc_sigpending();
+		spin_unlock_irq(&current->sighand->siglock);
+	}
+}
+
+/*
+ * Note that 'init' is a special process: it doesn't get signals it doesn't
+ * want to handle. Thus you cannot kill init even with a SIGKILL even by
+ * mistake.
+ *
+ * Also note that the regs structure given here as an argument, is the latest
+ * pushed pt_regs. It may or may not be the same as the first pushed registers
+ * when the initial usermode->kernelmode transition took place. Therefore
+ * we can use user_mode(regs) to see if we came directly from kernel or user
+ * mode below.
+ */
+int
+do_signal(int canrestart, sigset_t *oldset, struct pt_regs *regs)
+{
+	int signr;
+	siginfo_t info;
+        struct k_sigaction ka;
+
+	/*
+	 * The common case should go fast, which is why this point is
+	 * reached from kernel-mode. If that's the case, just return
+	 * without doing anything.
+	 */
+	if (!user_mode(regs))
+		return 1;
+
+	if (!oldset)
+		oldset = &current->blocked;
+
+	signr = get_signal_to_deliver(&info, &ka, regs, NULL);
+
+	if (signr > 0) {
+		/* Deliver the signal. */
+		handle_signal(canrestart, signr, &info, &ka, oldset, regs);
+		return 1;
+	}
+
+	/* Got here from a system call? */
+	if (canrestart) {
+		/* Restart the system call - no handlers present. */
+		if (regs->r10 == -ERESTARTNOHAND ||
+		    regs->r10 == -ERESTARTSYS ||
+		    regs->r10 == -ERESTARTNOINTR) {
+			RESTART_CRIS_SYS(regs);
+		}
+
+		if (regs->r10 == -ERESTART_RESTARTBLOCK){
+			regs->r10 = __NR_restart_syscall;
+			regs->erp -= 2;
+		}
+	}
+
+	return 0;
+}
+
+asmlinkage void
+ugdb_trap_user(struct thread_info *ti, int sig)
+{
+	if (((user_regs(ti)->exs & 0xff00) >> 8) != SINGLE_STEP_INTR_VECT) {
+		/* Zero single-step PC if the reason we stopped wasn't a single
+		   step exception. This is to avoid relying on it when it isn't
+		   reliable. */
+		user_regs(ti)->spc = 0;
+	}
+	/* FIXME: Filter out false h/w breakpoint hits (i.e. EDA
+	   not withing any configured h/w breakpoint range). Synchronize with
+	   what already exists for kernel debugging.  */
+	if (((user_regs(ti)->exs & 0xff00) >> 8) == BREAK_8_INTR_VECT) {
+		/* Break 8: subtract 2 from ERP unless in a delay slot. */
+		if (!(user_regs(ti)->erp & 0x1))
+			user_regs(ti)->erp -= 2;
+	}
+	sys_kill(ti->task->pid, sig);
+}
+
+void
+keep_debug_flags(unsigned long oldccs, unsigned long oldspc,
+		 struct pt_regs *regs)
+{
+	if (oldccs & (1 << Q_CCS_BITNR)) {
+		/* Pending single step due to single-stepping the break 13
+		   in the signal trampoline: keep the Q flag. */
+		regs->ccs |= (1 << Q_CCS_BITNR);
+		/* S flag should be set - complain if it's not. */
+		if (!(oldccs & (1 << (S_CCS_BITNR + CCS_SHIFT)))) {
+			printk("Q flag but no S flag?");
+		}
+		regs->ccs |= (1 << (S_CCS_BITNR + CCS_SHIFT));
+		/* Assume the SPC is valid and interesting. */
+		regs->spc = oldspc;
+
+	} else if (oldccs & (1 << (S_CCS_BITNR + CCS_SHIFT))) {
+		/* If a h/w bp was set in the signal handler we need
+		   to keep the S flag. */
+		regs->ccs |= (1 << (S_CCS_BITNR + CCS_SHIFT));
+		/* Don't keep the old SPC though; if we got here due to
+		   a single-step, the Q flag should have been set. */
+	} else if (regs->spc) {
+		/* If we were single-stepping *before* the signal was taken,
+		   we don't want to restore that state now, because GDB will
+		   have forgotten all about it. */
+		regs->spc = 0;
+		regs->ccs &= ~(1 << (S_CCS_BITNR + CCS_SHIFT));
+	}
+}
+
+/* Set up the trampolines on the signal return page. */
+int __init
+cris_init_signal(void)
+{
+	u16* data = (u16*)kmalloc(PAGE_SIZE, GFP_KERNEL);
+
+	/* This is movu.w __NR_sigreturn, r9; break 13; */
+	data[0] = 0x9c5f;
+	data[1] = __NR_sigreturn;
+	data[2] = 0xe93d;
+	/* This is movu.w __NR_rt_sigreturn, r9; break 13; */
+	data[3] = 0x9c5f;
+	data[4] = __NR_rt_sigreturn;
+	data[5] = 0xe93d;
+
+	/* Map to userspace with appropriate permissions (no write access...) */
+	cris_signal_return_page = (unsigned long)
+          __ioremap_prot(virt_to_phys(data), PAGE_SIZE, PAGE_SIGNAL_TRAMPOLINE);
+
+	return 0;
+}
+
+__initcall(cris_init_signal);
diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c
new file mode 100644
index 00000000000..2c5cae04a95
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/smp.c
@@ -0,0 +1,348 @@
+#include <asm/delay.h>
+#include <asm/arch/irq.h>
+#include <asm/arch/hwregs/intr_vect.h>
+#include <asm/arch/hwregs/intr_vect_defs.h>
+#include <asm/tlbflush.h>
+#include <asm/mmu_context.h>
+#include <asm/arch/hwregs/mmu_defs_asm.h>
+#include <asm/arch/hwregs/supp_reg.h>
+#include <asm/atomic.h>
+
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/timex.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/cpumask.h>
+#include <linux/interrupt.h>
+
+#define IPI_SCHEDULE 1
+#define IPI_CALL 2
+#define IPI_FLUSH_TLB 4
+
+#define FLUSH_ALL (void*)0xffffffff
+
+/* Vector of locks used for various atomic operations */
+spinlock_t cris_atomic_locks[] = { [0 ... LOCK_COUNT - 1] = SPIN_LOCK_UNLOCKED};
+
+/* CPU masks */
+cpumask_t cpu_online_map = CPU_MASK_NONE;
+cpumask_t phys_cpu_present_map = CPU_MASK_NONE;
+
+/* Variables used during SMP boot */
+volatile int cpu_now_booting = 0;
+volatile struct thread_info *smp_init_current_idle_thread;
+
+/* Variables used during IPI */
+static DEFINE_SPINLOCK(call_lock);
+static DEFINE_SPINLOCK(tlbstate_lock);
+
+struct call_data_struct {
+	void (*func) (void *info);
+	void *info;
+	int wait;
+};
+
+static struct call_data_struct * call_data;
+
+static struct mm_struct* flush_mm;
+static struct vm_area_struct* flush_vma;
+static unsigned long flush_addr;
+
+extern int setup_irq(int, struct irqaction *);
+
+/* Mode registers */
+static unsigned long irq_regs[NR_CPUS] =
+{
+  regi_irq,
+  regi_irq2
+};
+
+static irqreturn_t crisv32_ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs);
+static int send_ipi(int vector, int wait, cpumask_t cpu_mask);
+static struct irqaction irq_ipi  = { crisv32_ipi_interrupt, SA_INTERRUPT,
+                                     CPU_MASK_NONE, "ipi", NULL, NULL};
+
+extern void cris_mmu_init(void);
+extern void cris_timer_init(void);
+
+/* SMP initialization */
+void __init smp_prepare_cpus(unsigned int max_cpus)
+{
+	int i;
+
+	/* From now on we can expect IPIs so set them up */
+	setup_irq(IPI_INTR_VECT, &irq_ipi);
+
+	/* Mark all possible CPUs as present */
+	for (i = 0; i < max_cpus; i++)
+	    cpu_set(i, phys_cpu_present_map);
+}
+
+void __devinit smp_prepare_boot_cpu(void)
+{
+	/* PGD pointer has moved after per_cpu initialization so
+	 * update the MMU.
+	 */
+  	pgd_t **pgd;
+	pgd = (pgd_t**)&per_cpu(current_pgd, smp_processor_id());
+
+	SUPP_BANK_SEL(1);
+	SUPP_REG_WR(RW_MM_TLB_PGD, pgd);
+	SUPP_BANK_SEL(2);
+	SUPP_REG_WR(RW_MM_TLB_PGD, pgd);
+
+	cpu_set(0, cpu_online_map);
+	cpu_set(0, phys_cpu_present_map);
+}
+
+void __init smp_cpus_done(unsigned int max_cpus)
+{
+}
+
+/* Bring one cpu online.*/
+static int __init
+smp_boot_one_cpu(int cpuid)
+{
+	unsigned timeout;
+	struct task_struct *idle;
+
+	idle = fork_idle(cpuid);
+	if (IS_ERR(idle))
+		panic("SMP: fork failed for CPU:%d", cpuid);
+
+	idle->thread_info->cpu = cpuid;
+
+	/* Information to the CPU that is about to boot */
+	smp_init_current_idle_thread = idle->thread_info;
+	cpu_now_booting = cpuid;
+
+	/* Wait for CPU to come online */
+	for (timeout = 0; timeout < 10000; timeout++) {
+		if(cpu_online(cpuid)) {
+			cpu_now_booting = 0;
+			smp_init_current_idle_thread = NULL;
+			return 0; /* CPU online */
+		}
+		udelay(100);
+		barrier();
+	}
+
+	put_task_struct(idle);
+	idle = NULL;
+
+	printk(KERN_CRIT "SMP: CPU:%d is stuck.\n", cpuid);
+	return -1;
+}
+
+/* Secondary CPUs starts uing C here. Here we need to setup CPU
+ * specific stuff such as the local timer and the MMU. */
+void __init smp_callin(void)
+{
+	extern void cpu_idle(void);
+
+	int cpu = cpu_now_booting;
+	reg_intr_vect_rw_mask vect_mask = {0};
+
+	/* Initialise the idle task for this CPU */
+	atomic_inc(&init_mm.mm_count);
+	current->active_mm = &init_mm;
+
+	/* Set up MMU */
+	cris_mmu_init();
+	__flush_tlb_all();
+
+	/* Setup local timer. */
+	cris_timer_init();
+
+	/* Enable IRQ and idle */
+	REG_WR(intr_vect, irq_regs[cpu], rw_mask, vect_mask);
+	unmask_irq(IPI_INTR_VECT);
+	unmask_irq(TIMER_INTR_VECT);
+	local_irq_enable();
+
+	cpu_set(cpu, cpu_online_map);
+	cpu_idle();
+}
+
+/* Stop execution on this CPU.*/
+void stop_this_cpu(void* dummy)
+{
+	local_irq_disable();
+	asm volatile("halt");
+}
+
+/* Other calls */
+void smp_send_stop(void)
+{
+	smp_call_function(stop_this_cpu, NULL, 1, 0);
+}
+
+int setup_profiling_timer(unsigned int multiplier)
+{
+	return -EINVAL;
+}
+
+
+/* cache_decay_ticks is used by the scheduler to decide if a process
+ * is "hot" on one CPU. A higher value means a higher penalty to move
+ * a process to another CPU. Our cache is rather small so we report
+ * 1 tick.
+ */
+unsigned long cache_decay_ticks = 1;
+
+int __devinit __cpu_up(unsigned int cpu)
+{
+	smp_boot_one_cpu(cpu);
+	return cpu_online(cpu) ? 0 : -ENOSYS;
+}
+
+void smp_send_reschedule(int cpu)
+{
+	cpumask_t cpu_mask = CPU_MASK_NONE;
+	cpu_set(cpu, cpu_mask);
+	send_ipi(IPI_SCHEDULE, 0, cpu_mask);
+}
+
+/* TLB flushing
+ *
+ * Flush needs to be done on the local CPU and on any other CPU that
+ * may have the same mapping. The mm->cpu_vm_mask is used to keep track
+ * of which CPUs that a specific process has been executed on.
+ */
+void flush_tlb_common(struct mm_struct* mm, struct vm_area_struct* vma, unsigned long addr)
+{
+	unsigned long flags;
+	cpumask_t cpu_mask;
+
+	spin_lock_irqsave(&tlbstate_lock, flags);
+	cpu_mask = (mm == FLUSH_ALL ? CPU_MASK_ALL : mm->cpu_vm_mask);
+	cpu_clear(smp_processor_id(), cpu_mask);
+	flush_mm = mm;
+	flush_vma = vma;
+	flush_addr = addr;
+	send_ipi(IPI_FLUSH_TLB, 1, cpu_mask);
+	spin_unlock_irqrestore(&tlbstate_lock, flags);
+}
+
+void flush_tlb_all(void)
+{
+	__flush_tlb_all();
+	flush_tlb_common(FLUSH_ALL, FLUSH_ALL, 0);
+}
+
+void flush_tlb_mm(struct mm_struct *mm)
+{
+	__flush_tlb_mm(mm);
+	flush_tlb_common(mm, FLUSH_ALL, 0);
+	/* No more mappings in other CPUs */
+	cpus_clear(mm->cpu_vm_mask);
+	cpu_set(smp_processor_id(), mm->cpu_vm_mask);
+}
+
+void flush_tlb_page(struct vm_area_struct *vma,
+			   unsigned long addr)
+{
+	__flush_tlb_page(vma, addr);
+	flush_tlb_common(vma->vm_mm, vma, addr);
+}
+
+/* Inter processor interrupts
+ *
+ * The IPIs are used for:
+ *   * Force a schedule on a CPU
+ *   * FLush TLB on other CPUs
+ *   * Call a function on other CPUs
+ */
+
+int send_ipi(int vector, int wait, cpumask_t cpu_mask)
+{
+	int i = 0;
+	reg_intr_vect_rw_ipi ipi = REG_RD(intr_vect, irq_regs[i], rw_ipi);
+	int ret = 0;
+
+	/* Calculate CPUs to send to. */
+	cpus_and(cpu_mask, cpu_mask, cpu_online_map);
+
+	/* Send the IPI. */
+	for_each_cpu_mask(i, cpu_mask)
+	{
+		ipi.vector |= vector;
+		REG_WR(intr_vect, irq_regs[i], rw_ipi, ipi);
+	}
+
+	/* Wait for IPI to finish on other CPUS */
+	if (wait) {
+		for_each_cpu_mask(i, cpu_mask) {
+                        int j;
+                        for (j = 0 ; j < 1000; j++) {
+				ipi = REG_RD(intr_vect, irq_regs[i], rw_ipi);
+				if (!ipi.vector)
+					break;
+				udelay(100);
+			}
+
+			/* Timeout? */
+			if (ipi.vector) {
+				printk("SMP call timeout from %d to %d\n", smp_processor_id(), i);
+				ret = -ETIMEDOUT;
+				dump_stack();
+			}
+		}
+	}
+	return ret;
+}
+
+/*
+ * You must not call this function with disabled interrupts or from a
+ * hardware interrupt handler or from a bottom half handler.
+ */
+int smp_call_function(void (*func)(void *info), void *info,
+		      int nonatomic, int wait)
+{
+	cpumask_t cpu_mask = CPU_MASK_ALL;
+	struct call_data_struct data;
+	int ret;
+
+	cpu_clear(smp_processor_id(), cpu_mask);
+
+	WARN_ON(irqs_disabled());
+
+	data.func = func;
+	data.info = info;
+	data.wait = wait;
+
+	spin_lock(&call_lock);
+	call_data = &data;
+	ret = send_ipi(IPI_CALL, wait, cpu_mask);
+	spin_unlock(&call_lock);
+
+	return ret;
+}
+
+irqreturn_t crisv32_ipi_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	void (*func) (void *info) = call_data->func;
+	void *info = call_data->info;
+	reg_intr_vect_rw_ipi ipi;
+
+	ipi = REG_RD(intr_vect, irq_regs[smp_processor_id()], rw_ipi);
+
+	if (ipi.vector & IPI_CALL) {
+	         func(info);
+	}
+	if (ipi.vector & IPI_FLUSH_TLB) {
+		     if (flush_mm == FLUSH_ALL)
+			 __flush_tlb_all();
+		     else if (flush_vma == FLUSH_ALL)
+			__flush_tlb_mm(flush_mm);
+		     else
+			__flush_tlb_page(flush_vma, flush_addr);
+	}
+
+	ipi.vector = 0;
+	REG_WR(intr_vect, irq_regs[smp_processor_id()], rw_ipi, ipi);
+
+	return IRQ_HANDLED;
+}
+
diff --git a/arch/cris/arch-v32/kernel/time.c b/arch/cris/arch-v32/kernel/time.c
new file mode 100644
index 00000000000..d48e397f5fa
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/time.c
@@ -0,0 +1,341 @@
+/* $Id: time.c,v 1.19 2005/04/29 05:40:09 starvik Exp $
+ *
+ *  linux/arch/cris/arch-v32/kernel/time.c
+ *
+ *  Copyright (C) 2003 Axis Communications AB
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/timex.h>
+#include <linux/time.h>
+#include <linux/jiffies.h>
+#include <linux/interrupt.h>
+#include <linux/swap.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/threads.h>
+#include <asm/types.h>
+#include <asm/signal.h>
+#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/rtc.h>
+#include <asm/irq.h>
+
+#include <asm/arch/hwregs/reg_map.h>
+#include <asm/arch/hwregs/reg_rdwr.h>
+#include <asm/arch/hwregs/timer_defs.h>
+#include <asm/arch/hwregs/intr_vect_defs.h>
+
+/* Watchdog defines */
+#define ETRAX_WD_KEY_MASK 0x7F /* key is 7 bit */
+#define ETRAX_WD_HZ       763 /* watchdog counts at 763 Hz */
+#define ETRAX_WD_CNT      ((2*ETRAX_WD_HZ)/HZ + 1) /* Number of 763 counts before watchdog bites */
+
+unsigned long timer_regs[NR_CPUS] =
+{
+  regi_timer,
+#ifdef CONFIG_SMP
+  regi_timer2
+#endif
+};
+
+extern void update_xtime_from_cmos(void);
+extern int set_rtc_mmss(unsigned long nowtime);
+extern int setup_irq(int, struct irqaction *);
+extern int have_rtc;
+
+unsigned long get_ns_in_jiffie(void)
+{
+	reg_timer_r_tmr0_data data;
+	unsigned long ns;
+
+	data = REG_RD(timer, regi_timer, r_tmr0_data);
+	ns = (TIMER0_DIV - data) * 10;
+	return ns;
+}
+
+unsigned long do_slow_gettimeoffset(void)
+{
+	unsigned long count;
+	unsigned long usec_count = 0;
+
+	static unsigned long count_p = TIMER0_DIV;/* for the first call after boot */
+	static unsigned long jiffies_p = 0;
+
+	/*
+	 * cache volatile jiffies temporarily; we have IRQs turned off.
+	 */
+	unsigned long jiffies_t;
+
+	/* The timer interrupt comes from Etrax timer 0. In order to get
+	 * better precision, we check the current value. It might have
+	 * underflowed already though.
+	 */
+
+	count = REG_RD(timer, regi_timer, r_tmr0_data);
+ 	jiffies_t = jiffies;
+
+	/*
+	 * avoiding timer inconsistencies (they are rare, but they happen)...
+	 * there are one problem that must be avoided here:
+	 *  1. the timer counter underflows
+	 */
+	if( jiffies_t == jiffies_p ) {
+		if( count > count_p ) {
+			/* Timer wrapped, use new count and prescale
+			 * increase the time corresponding to one jiffie
+			 */
+			usec_count = 1000000/HZ;
+		}
+	} else
+		jiffies_p = jiffies_t;
+        count_p = count;
+	/* Convert timer value to usec */
+	/* 100 MHz timer, divide by 100 to get usec */
+	usec_count +=  (TIMER0_DIV - count) / 100;
+	return usec_count;
+}
+
+/* From timer MDS describing the hardware watchdog:
+ * 4.3.1 Watchdog Operation
+ * The watchdog timer is an 8-bit timer with a configurable start value.
+ * Once started the whatchdog counts downwards with a frequency of 763 Hz
+ * (100/131072 MHz). When the watchdog counts down to 1, it generates an
+ * NMI (Non Maskable Interrupt), and when it counts down to 0, it resets the
+ * chip.
+ */
+/* This gives us 1.3 ms to do something useful when the NMI comes */
+
+/* right now, starting the watchdog is the same as resetting it */
+#define start_watchdog reset_watchdog
+
+#if defined(CONFIG_ETRAX_WATCHDOG)
+static short int watchdog_key = 42;  /* arbitrary 7 bit number */
+#endif
+
+/* number of pages to consider "out of memory". it is normal that the memory
+ * is used though, so put this really low.
+ */
+
+#define WATCHDOG_MIN_FREE_PAGES 8
+
+void
+reset_watchdog(void)
+{
+#if defined(CONFIG_ETRAX_WATCHDOG)
+	reg_timer_rw_wd_ctrl wd_ctrl = { 0 };
+
+	/* only keep watchdog happy as long as we have memory left! */
+	if(nr_free_pages() > WATCHDOG_MIN_FREE_PAGES) {
+		/* reset the watchdog with the inverse of the old key */
+		watchdog_key ^= ETRAX_WD_KEY_MASK; /* invert key, which is 7 bits */
+		wd_ctrl.cnt = ETRAX_WD_CNT;
+		wd_ctrl.cmd = regk_timer_start;
+		wd_ctrl.key = watchdog_key;
+		REG_WR(timer, regi_timer, rw_wd_ctrl, wd_ctrl);
+	}
+#endif
+}
+
+/* stop the watchdog - we still need the correct key */
+
+void
+stop_watchdog(void)
+{
+#if defined(CONFIG_ETRAX_WATCHDOG)
+	reg_timer_rw_wd_ctrl wd_ctrl = { 0 };
+	watchdog_key ^= ETRAX_WD_KEY_MASK; /* invert key, which is 7 bits */
+	wd_ctrl.cnt = ETRAX_WD_CNT;
+	wd_ctrl.cmd = regk_timer_stop;
+	wd_ctrl.key = watchdog_key;
+	REG_WR(timer, regi_timer, rw_wd_ctrl, wd_ctrl);
+#endif
+}
+
+extern void show_registers(struct pt_regs *regs);
+
+void
+handle_watchdog_bite(struct pt_regs* regs)
+{
+#if defined(CONFIG_ETRAX_WATCHDOG)
+	extern int cause_of_death;
+
+	raw_printk("Watchdog bite\n");
+
+	/* Check if forced restart or unexpected watchdog */
+	if (cause_of_death == 0xbedead) {
+		while(1);
+	}
+
+	/* Unexpected watchdog, stop the watchdog and dump registers*/
+	stop_watchdog();
+	raw_printk("Oops: bitten by watchdog\n");
+        show_registers(regs);
+#ifndef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
+	reset_watchdog();
+#endif
+	while(1) /* nothing */;
+#endif
+}
+
+/* last time the cmos clock got updated */
+static long last_rtc_update = 0;
+
+/*
+ * timer_interrupt() needs to keep up the real-time clock,
+ * as well as call the "do_timer()" routine every clocktick
+ */
+
+//static unsigned short myjiff; /* used by our debug routine print_timestamp */
+
+extern void cris_do_profile(struct pt_regs *regs);
+
+static inline irqreturn_t
+timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	int cpu = smp_processor_id();
+	reg_timer_r_masked_intr masked_intr;
+	reg_timer_rw_ack_intr ack_intr = { 0 };
+
+	/* Check if the timer interrupt is for us (a tmr0 int) */
+	masked_intr = REG_RD(timer, timer_regs[cpu], r_masked_intr);
+	if (!masked_intr.tmr0)
+		return IRQ_NONE;
+
+	/* acknowledge the timer irq */
+	ack_intr.tmr0 = 1;
+	REG_WR(timer, timer_regs[cpu], rw_ack_intr, ack_intr);
+
+	/* reset watchdog otherwise it resets us! */
+	reset_watchdog();
+
+        /* Update statistics. */
+	update_process_times(user_mode(regs));
+
+	cris_do_profile(regs); /* Save profiling information */
+
+	/* The master CPU is responsible for the time keeping. */
+	if (cpu != 0)
+		return IRQ_HANDLED;
+
+	/* call the real timer interrupt handler */
+	do_timer(regs);
+
+	/*
+	 * If we have an externally synchronized Linux clock, then update
+	 * CMOS clock accordingly every ~11 minutes. Set_rtc_mmss() has to be
+	 * called as close as possible to 500 ms before the new second starts.
+	 *
+	 * The division here is not time critical since it will run once in
+	 * 11 minutes
+	 */
+	if ((time_status & STA_UNSYNC) == 0 &&
+	    xtime.tv_sec > last_rtc_update + 660 &&
+	    (xtime.tv_nsec / 1000) >= 500000 - (tick_nsec / 1000) / 2 &&
+	    (xtime.tv_nsec / 1000) <= 500000 + (tick_nsec / 1000) / 2) {
+		if (set_rtc_mmss(xtime.tv_sec) == 0)
+			last_rtc_update = xtime.tv_sec;
+		else
+			last_rtc_update = xtime.tv_sec - 600; /* do it again in 60 s */
+	}
+        return IRQ_HANDLED;
+}
+
+/* timer is SA_SHIRQ so drivers can add stuff to the timer irq chain
+ * it needs to be SA_INTERRUPT to make the jiffies update work properly
+ */
+
+static struct irqaction irq_timer  = { timer_interrupt, SA_SHIRQ | SA_INTERRUPT,
+				  CPU_MASK_NONE, "timer", NULL, NULL};
+
+void __init
+cris_timer_init(void)
+{
+	int cpu = smp_processor_id();
+  	reg_timer_rw_tmr0_ctrl tmr0_ctrl = { 0 };
+       	reg_timer_rw_tmr0_div tmr0_div = TIMER0_DIV;
+	reg_timer_rw_intr_mask timer_intr_mask;
+
+	/* Setup the etrax timers
+	 * Base frequency is 100MHz, divider 1000000 -> 100 HZ
+	 * We use timer0, so timer1 is free.
+	 * The trig timer is used by the fasttimer API if enabled.
+	 */
+
+       	tmr0_ctrl.op = regk_timer_ld;
+	tmr0_ctrl.freq = regk_timer_f100;
+       	REG_WR(timer, timer_regs[cpu], rw_tmr0_div, tmr0_div);
+       	REG_WR(timer, timer_regs[cpu], rw_tmr0_ctrl, tmr0_ctrl); /* Load */
+       	tmr0_ctrl.op = regk_timer_run;
+       	REG_WR(timer, timer_regs[cpu], rw_tmr0_ctrl, tmr0_ctrl); /* Start */
+
+       	/* enable the timer irq */
+       	timer_intr_mask = REG_RD(timer, timer_regs[cpu], rw_intr_mask);
+       	timer_intr_mask.tmr0 = 1;
+       	REG_WR(timer, timer_regs[cpu], rw_intr_mask, timer_intr_mask);
+}
+
+void __init
+time_init(void)
+{
+	reg_intr_vect_rw_mask intr_mask;
+
+	/* probe for the RTC and read it if it exists
+	 * Before the RTC can be probed the loops_per_usec variable needs
+	 * to be initialized to make usleep work. A better value for
+	 * loops_per_usec is calculated by the kernel later once the
+	 * clock has started.
+	 */
+	loops_per_usec = 50;
+
+	if(RTC_INIT() < 0) {
+		/* no RTC, start at 1980 */
+		xtime.tv_sec = 0;
+		xtime.tv_nsec = 0;
+		have_rtc = 0;
+	} else {
+		/* get the current time */
+		have_rtc = 1;
+		update_xtime_from_cmos();
+	}
+
+	/*
+	 * Initialize wall_to_monotonic such that adding it to xtime will yield zero, the
+	 * tv_nsec field must be normalized (i.e., 0 <= nsec < NSEC_PER_SEC).
+	 */
+	set_normalized_timespec(&wall_to_monotonic, -xtime.tv_sec, -xtime.tv_nsec);
+
+	/* Start CPU local timer */
+	cris_timer_init();
+
+	/* enable the timer irq in global config */
+	intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
+	intr_mask.timer = 1;
+	REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
+
+	/* now actually register the timer irq handler that calls timer_interrupt() */
+
+	setup_irq(TIMER_INTR_VECT, &irq_timer);
+
+	/* enable watchdog if we should use one */
+
+#if defined(CONFIG_ETRAX_WATCHDOG)
+	printk("Enabling watchdog...\n");
+	start_watchdog();
+
+	/* If we use the hardware watchdog, we want to trap it as an NMI
+	   and dump registers before it resets us.  For this to happen, we
+	   must set the "m" NMI enable flag (which once set, is unset only
+	   when an NMI is taken).
+
+	   The same goes for the external NMI, but that doesn't have any
+	   driver or infrastructure support yet.  */
+        {
+          unsigned long flags;
+          local_save_flags(flags);
+          flags |= (1<<30); /* NMI M flag is at bit 30 */
+          local_irq_restore(flags);
+        }
+#endif
+}
diff --git a/arch/cris/arch-v32/kernel/traps.c b/arch/cris/arch-v32/kernel/traps.c
new file mode 100644
index 00000000000..6e378704556
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/traps.c
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2003, Axis Communications AB.
+ */
+
+#include <linux/config.h>
+#include <linux/ptrace.h>
+#include <asm/uaccess.h>
+
+#include <asm/arch/hwregs/supp_reg.h>
+
+extern void reset_watchdog(void);
+extern void stop_watchdog(void);
+
+extern int raw_printk(const char *fmt, ...);
+
+void
+show_registers(struct pt_regs *regs)
+{
+	/*
+	 * It's possible to use either the USP register or current->thread.usp.
+	 * USP might not correspond to the current proccess for all cases this
+	 * function is called, and current->thread.usp isn't up to date for the
+	 * current proccess. Experience shows that using USP is the way to go.
+	 */
+	unsigned long usp;
+	unsigned long d_mmu_cause;
+	unsigned long i_mmu_cause;
+
+	usp = rdusp();
+
+	raw_printk("CPU: %d\n", smp_processor_id());
+
+	raw_printk("ERP: %08lx SRP: %08lx  CCS: %08lx USP: %08lx MOF: %08lx\n",
+		regs->erp, regs->srp, regs->ccs, usp, regs->mof);
+
+	raw_printk(" r0: %08lx  r1: %08lx   r2: %08lx  r3: %08lx\n",
+		regs->r0, regs->r1, regs->r2, regs->r3);
+
+	raw_printk(" r4: %08lx  r5: %08lx   r6: %08lx  r7: %08lx\n",
+		regs->r4, regs->r5, regs->r6, regs->r7);
+
+	raw_printk(" r8: %08lx  r9: %08lx  r10: %08lx r11: %08lx\n",
+		regs->r8, regs->r9, regs->r10, regs->r11);
+
+	raw_printk("r12: %08lx r13: %08lx oR10: %08lx acr: %08lx\n",
+		regs->r12, regs->r13, regs->orig_r10, regs->acr);
+
+	raw_printk("sp: %08lx\n", regs);
+
+	SUPP_BANK_SEL(BANK_IM);
+	SUPP_REG_RD(RW_MM_CAUSE, i_mmu_cause);
+
+	SUPP_BANK_SEL(BANK_DM);
+	SUPP_REG_RD(RW_MM_CAUSE, d_mmu_cause);
+
+	raw_printk("       Data MMU Cause: %08lx\n", d_mmu_cause);
+	raw_printk("Instruction MMU Cause: %08lx\n", i_mmu_cause);
+
+	raw_printk("Process %s (pid: %d, stackpage: %08lx)\n",
+		current->comm, current->pid, (unsigned long) current);
+
+	/* Show additional info if in kernel-mode. */
+	if (!user_mode(regs)) {
+		int i;
+		unsigned char c;
+
+		show_stack(NULL, (unsigned long *) usp);
+
+		/*
+		 * If the previous stack-dump wasn't a kernel one, dump the
+		 * kernel stack now.
+		 */
+		if (usp != 0)
+			show_stack(NULL, NULL);
+
+		raw_printk("\nCode: ");
+
+		if (regs->erp < PAGE_OFFSET)
+			goto bad_value;
+
+		/*
+		 * Quite often the value at regs->erp doesn't point to the
+		 * interesting instruction, which often is the previous
+		 * instruction. So dump at an offset large enough that the
+		 * instruction decoding should be in sync at the interesting
+		 * point, but small enough to fit on a row. The regs->erp
+		 * location is pointed out in a ksymoops-friendly way by
+		 * wrapping the byte for that address in parenthesis.
+		 */
+		for (i = -12; i < 12; i++) {
+			if (__get_user(c, &((unsigned char *) regs->erp)[i])) {
+bad_value:
+				raw_printk(" Bad IP value.");
+				break;
+			}
+
+			if (i == 0)
+				raw_printk("(%02x) ", c);
+			else
+				raw_printk("%02x ", c);
+		}
+
+		raw_printk("\n");
+	}
+}
+
+/*
+ * This gets called from entry.S when the watchdog has bitten. Show something
+ * similiar to an Oops dump, and if the kernel if configured to be a nice doggy;
+ * halt instead of reboot.
+ */
+void
+watchdog_bite_hook(struct pt_regs *regs)
+{
+#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
+	local_irq_disable();
+	stop_watchdog();
+	show_registers(regs);
+
+	while (1)
+		; /* Do nothing. */
+#else
+	show_registers(regs);
+#endif
+}
+
+/* This is normally the Oops function. */
+void
+die_if_kernel(const char *str, struct pt_regs *regs, long err)
+{
+	if (user_mode(regs))
+		return;
+
+#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
+	/*
+	 * This printout might take too long and could trigger
+	 * the watchdog normally. If NICE_DOGGY is set, simply
+	 * stop the watchdog during the printout.
+	 */
+	stop_watchdog();
+#endif
+
+	raw_printk("%s: %04lx\n", str, err & 0xffff);
+
+	show_registers(regs);
+
+#ifdef CONFIG_ETRAX_WATCHDOG_NICE_DOGGY
+	reset_watchdog();
+#endif
+
+	do_exit(SIGSEGV);
+}
+
+void arch_enable_nmi(void)
+{
+	unsigned long flags;
+	local_save_flags(flags);
+	flags |= (1<<30); /* NMI M flag is at bit 30 */
+	local_irq_restore(flags);
+}
diff --git a/arch/cris/arch-v32/kernel/vcs_hook.c b/arch/cris/arch-v32/kernel/vcs_hook.c
new file mode 100644
index 00000000000..64d71c54c22
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/vcs_hook.c
@@ -0,0 +1,96 @@
+// $Id: vcs_hook.c,v 1.2 2003/08/12 12:01:06 starvik Exp $
+//
+// Call simulator hook. This is the part running in the
+// simulated program.
+//
+
+#include "vcs_hook.h"
+#include <stdarg.h>
+#include <asm/arch-v32/hwregs/reg_map.h>
+#include <asm/arch-v32/hwregs/intr_vect_defs.h>
+
+#define HOOK_TRIG_ADDR     0xb7000000   /* hook cvlog model reg address */
+#define HOOK_MEM_BASE_ADDR 0xa0000000   /* csp4 (shared mem) base addr */
+
+#define HOOK_DATA(offset) ((unsigned*) HOOK_MEM_BASE_ADDR)[offset]
+#define VHOOK_DATA(offset) ((volatile unsigned*) HOOK_MEM_BASE_ADDR)[offset]
+#define HOOK_TRIG(funcid) do { *((unsigned *) HOOK_TRIG_ADDR) = funcid; } while(0)
+#define HOOK_DATA_BYTE(offset) ((unsigned char*) HOOK_MEM_BASE_ADDR)[offset]
+
+
+// ------------------------------------------------------------------ hook_call
+int hook_call( unsigned id, unsigned pcnt, ...) {
+  va_list ap;
+  unsigned i;
+  unsigned ret;
+#ifdef USING_SOS
+  PREEMPT_OFF_SAVE();
+#endif
+
+  // pass parameters
+  HOOK_DATA(0) = id;
+
+  /* Have to make hook_print_str a special case since we call with a
+     parameter of byte type. Should perhaps be a separate
+     hook_call. */
+
+  if (id == hook_print_str) {
+    int i;
+    char *str;
+
+    HOOK_DATA(1) = pcnt;
+
+    va_start(ap, pcnt);
+    str = (char*)va_arg(ap,unsigned);
+
+    for (i=0; i!=pcnt; i++) {
+      HOOK_DATA_BYTE(8+i) = str[i];
+    }
+    HOOK_DATA_BYTE(8+i) = 0;	/* null byte */
+  }
+  else {
+    va_start(ap, pcnt);
+    for( i = 1; i <= pcnt; i++ ) HOOK_DATA(i) = va_arg(ap,unsigned);
+    va_end(ap);
+  }
+
+  // read from mem to make sure data has propagated to memory before trigging
+  *((volatile unsigned*) HOOK_MEM_BASE_ADDR);
+
+  // trigger hook
+  HOOK_TRIG(id);
+
+  // wait for call to finish
+  while( VHOOK_DATA(0) > 0 ) {}
+
+  // extract return value
+
+  ret = VHOOK_DATA(1);
+
+#ifdef USING_SOS
+  PREEMPT_RESTORE();
+#endif
+  return ret;
+}
+
+unsigned
+hook_buf(unsigned i)
+{
+  return (HOOK_DATA(i));
+}
+
+void print_str( const char *str ) {
+  int i;
+  for (i=1; str[i]; i++);         /* find null at end of string */
+  hook_call(hook_print_str, i, str);
+}
+
+// --------------------------------------------------------------- CPU_KICK_DOG
+void CPU_KICK_DOG(void) {
+  (void) hook_call( hook_kick_dog, 0 );
+}
+
+// ------------------------------------------------------- CPU_WATCHDOG_TIMEOUT
+void CPU_WATCHDOG_TIMEOUT( unsigned t ) {
+  (void) hook_call( hook_dog_timeout, 1, t );
+}
diff --git a/arch/cris/arch-v32/kernel/vcs_hook.h b/arch/cris/arch-v32/kernel/vcs_hook.h
new file mode 100644
index 00000000000..7d73709e3cc
--- /dev/null
+++ b/arch/cris/arch-v32/kernel/vcs_hook.h
@@ -0,0 +1,42 @@
+// $Id: vcs_hook.h,v 1.1 2003/08/12 12:01:06 starvik Exp $
+//
+// Call simulator hook functions
+
+#ifndef HOOK_H
+#define HOOK_H
+
+int hook_call( unsigned id, unsigned pcnt, ...);
+
+enum hook_ids {
+  hook_debug_on = 1,
+  hook_debug_off,
+  hook_stop_sim_ok,
+  hook_stop_sim_fail,
+  hook_alloc_shared,
+  hook_ptr_shared,
+  hook_free_shared,
+  hook_file2shared,
+  hook_cmp_shared,
+  hook_print_params,
+  hook_sim_time,
+  hook_stop_sim,
+  hook_kick_dog,
+  hook_dog_timeout,
+  hook_rand,
+  hook_srand,
+  hook_rand_range,
+  hook_print_str,
+  hook_print_hex,
+  hook_cmp_offset_shared,
+  hook_fill_random_shared,
+  hook_alloc_random_data,
+  hook_calloc_random_data,
+  hook_print_int,
+  hook_print_uint,
+  hook_fputc,
+  hook_init_fd,
+  hook_sbrk
+
+};
+
+#endif