sh: Move cpu/$CPU to arch/sh/cpu/$CPU

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

24 files changed, 1638 insertions, 0 deletions

diff --git a/arch/sh/cpu/sh2/Makefile b/arch/sh/cpu/sh2/Makefile
new file mode 100644
index 0000000000..346d3285db
--- /dev/null
+++ b/arch/sh/cpu/sh2/Makefile
@@ -0,0 +1,54 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+# Copyright (C) 2008 Renesas Solutions Corp.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(CPU).a
+
+SOBJS	= start.o
+COBJS	= cpu.o interrupts.o watchdog.o
+
+SRCS    := $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS    := $(addprefix $(obj),$(COBJS))
+SOBJS   := $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/sh/cpu/sh2/cache.c b/arch/sh/cpu/sh2/cache.c
new file mode 100644
index 0000000000..b5c47cf21a
--- /dev/null
+++ b/arch/sh/cpu/sh2/cache.c
@@ -0,0 +1,112 @@
+/*
+ * (C) Copyright 2007
+ * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * Copyright (C) 2007, 2008 Nobobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+/*
+ * Jump to P2 area.
+ * When handling TLB or caches, we need to do it from P2 area.
+ */
+#define jump_to_P2()			\
+do {					\
+	unsigned long __dummy;		\
+	__asm__ __volatile__(		\
+		"mov.l  1f, %0\n\t"	\
+		"or     %1, %0\n\t"	\
+		"jmp    @%0\n\t"	\
+		" nop\n\t"		\
+		".balign 4\n"		\
+		"1:     .long 2f\n"	\
+		"2:"			\
+		: "=&r" (__dummy)	\
+		: "r" (0x20000000));	\
+} while (0)
+
+/*
+ * Back to P1 area.
+ */
+#define back_to_P1()			\
+do {					\
+	unsigned long __dummy;		\
+	__asm__ __volatile__(		\
+		"nop;nop;nop;nop;nop;nop;nop\n\t"	\
+		"mov.l  1f, %0\n\t"	\
+		"jmp    @%0\n\t"	\
+		" nop\n\t"		\
+		".balign 4\n"		\
+		"1:     .long 2f\n"	\
+		"2:"			\
+		: "=&r" (__dummy));	\
+} while (0)
+
+#define CACHE_VALID	1
+#define CACHE_UPDATED	2
+
+static inline void cache_wback_all(void)
+{
+	unsigned long addr, data, i, j;
+
+	jump_to_P2();
+	for (i = 0; i < CACHE_OC_NUM_ENTRIES; i++) {
+		for (j = 0; j < CACHE_OC_NUM_WAYS; j++) {
+			addr = CACHE_OC_ADDRESS_ARRAY
+				| (j << CACHE_OC_WAY_SHIFT)
+				| (i << CACHE_OC_ENTRY_SHIFT);
+			data = inl(addr);
+			if (data & CACHE_UPDATED) {
+				data &= ~CACHE_UPDATED;
+				outl(data, addr);
+			}
+		}
+	}
+	back_to_P1();
+}
+
+
+#define CACHE_ENABLE	0
+#define CACHE_DISABLE	1
+
+int cache_control(unsigned int cmd)
+{
+	unsigned long ccr;
+
+	jump_to_P2();
+	ccr = inl(CCR);
+
+	if (ccr & CCR_CACHE_ENABLE)
+		cache_wback_all();
+
+	if (cmd == CACHE_DISABLE)
+		outl(CCR_CACHE_STOP, CCR);
+	else
+		outl(CCR_CACHE_INIT, CCR);
+	back_to_P1();
+
+	return 0;
+}
diff --git a/arch/sh/cpu/sh2/config.mk b/arch/sh/cpu/sh2/config.mk
new file mode 100644
index 0000000000..52d5a0f4d5
--- /dev/null
+++ b/arch/sh/cpu/sh2/config.mk
@@ -0,0 +1,26 @@
+#
+# (C) Copyright 2007-2008
+# Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+#
+PLATFORM_CPPFLAGS += -m3e -mb
+PLATFORM_RELFLAGS += -ffixed-r13
+PLATFORM_LDFLAGS += -EB
diff --git a/arch/sh/cpu/sh2/cpu.c b/arch/sh/cpu/sh2/cpu.c
new file mode 100644
index 0000000000..e0cb04752d
--- /dev/null
+++ b/arch/sh/cpu/sh2/cpu.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+#define STBCR4      0xFFFE040C
+#define cmt_clock_enable() do {\
+		writeb(readb(STBCR4) & ~0x04, STBCR4);\
+	} while (0)
+#define scif0_enable() do {\
+		writeb(readb(STBCR4) & ~0x80, STBCR4);\
+	} while (0)
+
+int checkcpu(void)
+{
+#if defined(CONFIG_SH2A)
+	puts("CPU: SH2A\n");
+#else
+	puts("CPU: SH2\n");
+#endif
+	return 0;
+}
+
+int cpu_init(void)
+{
+	/* SCIF enable */
+	scif0_enable();
+	/* CMT clock enable */
+	cmt_clock_enable() ;
+	return 0;
+}
+
+int cleanup_before_linux(void)
+{
+	disable_interrupts();
+	return 0;
+}
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	disable_interrupts();
+	reset_cpu(0);
+	return 0;
+}
+
+void flush_cache(unsigned long addr, unsigned long size)
+{
+
+}
+
+void icache_enable(void)
+{
+}
+
+void icache_disable(void)
+{
+}
+
+int icache_status(void)
+{
+	return 0;
+}
+
+void dcache_enable(void)
+{
+}
+
+void dcache_disable(void)
+{
+}
+
+int dcache_status(void)
+{
+	return 0;
+}
diff --git a/arch/sh/cpu/sh2/interrupts.c b/arch/sh/cpu/sh2/interrupts.c
new file mode 100644
index 0000000000..fe6ff3a9cb
--- /dev/null
+++ b/arch/sh/cpu/sh2/interrupts.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+int interrupt_init(void)
+{
+	return 0;
+}
+
+void enable_interrupts(void)
+{
+
+}
+
+int disable_interrupts(void)
+{
+	return 0;
+}
diff --git a/arch/sh/cpu/sh2/start.S b/arch/sh/cpu/sh2/start.S
new file mode 100644
index 0000000000..0ab867d54d
--- /dev/null
+++ b/arch/sh/cpu/sh2/start.S
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <version.h>
+
+	.text
+	.align	2
+
+	.global	_start
+_start:
+	.long 0x00000010	/* Ppower ON reset PC*/
+	.long 0x00000000
+	.long 0x00000010	/* Manual reset PC */
+	.long 0x00000000
+_init:
+	mov.l	._lowlevel_init, r0
+100:	bsrf	r0
+	nop
+	bsr	1f
+	nop
+1:	sts	pr, r5
+	mov.l	._reloc_dst, r4
+	add	#(_start-1b), r5
+	mov.l	._reloc_dst_end, r6
+
+2:	mov.l	@r5+, r1
+	mov.l	r1, @r4
+	add	#4, r4
+	cmp/hs	r6, r4
+	bf	2b
+
+	mov.l	._bss_start, r4
+	mov.l	._bss_end, r5
+	mov	#0, r1
+
+3:	mov.l	r1, @r4			/* bss clear */
+	add	#4, r4
+	cmp/hs	r5, r4
+	bf	3b
+
+	mov.l	._gd_init, r13		/* global data */
+	mov.l	._stack_init, r15	/* stack */
+
+	mov.l	._sh_generic_init, r0
+	jsr	@r0
+	nop
+
+loop:
+	bra	loop
+
+	.align	2
+
+._lowlevel_init:	.long	(lowlevel_init - (100b + 4))
+._reloc_dst:		.long	reloc_dst
+._reloc_dst_end:	.long	reloc_dst_end
+._bss_start:		.long	bss_start
+._bss_end:		.long	bss_end
+._gd_init:		.long	(_start - CONFIG_SYS_GBL_DATA_SIZE)
+._stack_init:	.long	(_start - CONFIG_SYS_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16)
+._sh_generic_init:	.long	sh_generic_init
diff --git a/arch/sh/cpu/sh2/u-boot.lds b/arch/sh/cpu/sh2/u-boot.lds
new file mode 100644
index 0000000000..e4e8b60696
--- /dev/null
+++ b/arch/sh/cpu/sh2/u-boot.lds
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2008 Nobuhiro Iwamatsu
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+OUTPUT_FORMAT("elf32-sh-linux", "elf32-sh-linux", "elf32-sh-linux")
+OUTPUT_ARCH(sh)
+ENTRY(_start)
+
+SECTIONS
+{
+	/*
+	 * entry and reloct_dst will be provided via ldflags
+	 */
+	. = .;
+
+	PROVIDE (_ftext = .);
+	PROVIDE (_fcode = .);
+	PROVIDE (_start = .);
+
+	.text :
+	{
+		arch/sh/cpu/sh2/start.o		(.text)
+		. = ALIGN(8192);
+		common/env_embedded.o	(.ppcenv)
+		. = ALIGN(8192);
+		common/env_embedded.o	(.ppcenvr)
+		. = ALIGN(8192);
+		*(.text)
+		. = ALIGN(4);
+	} =0xFF
+	PROVIDE (_ecode = .);
+	.rodata :
+	{
+		*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+		. = ALIGN(4);
+	}
+	PROVIDE (_etext = .);
+
+
+	PROVIDE (_fdata = .);
+	.data :
+	{
+		*(.data)
+		. = ALIGN(4);
+	}
+	PROVIDE (_edata = .);
+
+	PROVIDE (_fgot = .);
+	.got :
+	{
+		*(.got)
+		. = ALIGN(4);
+	}
+	PROVIDE (_egot = .);
+
+	PROVIDE (__u_boot_cmd_start = .);
+	.u_boot_cmd :
+	{
+		*(.u_boot_cmd)
+		. = ALIGN(4);
+	}
+	PROVIDE (__u_boot_cmd_end = .);
+
+	PROVIDE (reloc_dst_end = .);
+
+	PROVIDE (bss_start = .);
+	PROVIDE (__bss_start = .);
+	.bss :
+	{
+		*(.bss)
+		. = ALIGN(4);
+	}
+	PROVIDE (bss_end = .);
+
+	PROVIDE (_end = .);
+}
diff --git a/arch/sh/cpu/sh2/watchdog.c b/arch/sh/cpu/sh2/watchdog.c
new file mode 100644
index 0000000000..de0254b446
--- /dev/null
+++ b/arch/sh/cpu/sh2/watchdog.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2008 Nobuhiro Iwamatsu <iwamatsu.nobuhoro@renesas.com>
+ * Copyright (C) 2008 Renesas Solutions Corp.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+
+int watchdog_init(void)
+{
+	return 0;
+}
+
+void reset_cpu(unsigned long ignored)
+{
+	while (1)
+		;
+}
diff --git a/arch/sh/cpu/sh3/Makefile b/arch/sh/cpu/sh3/Makefile
new file mode 100644
index 0000000000..35e8f51ab1
--- /dev/null
+++ b/arch/sh/cpu/sh3/Makefile
@@ -0,0 +1,57 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2007
+# Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+#
+# (C) Copyright 2007
+# Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(CPU).a
+
+SOBJS	= start.o
+COBJS	= cpu.o interrupts.o watchdog.o cache.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/sh/cpu/sh3/cache.c b/arch/sh/cpu/sh3/cache.c
new file mode 100644
index 0000000000..c294a2b91d
--- /dev/null
+++ b/arch/sh/cpu/sh3/cache.c
@@ -0,0 +1,112 @@
+/*
+ * (C) Copyright 2007
+ * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * (C) Copyright 2007
+ * Nobobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+/*
+ * Jump to P2 area.
+ * When handling TLB or caches, we need to do it from P2 area.
+ */
+#define jump_to_P2()                    \
+  do {                                    \
+    unsigned long __dummy;		\
+    __asm__ __volatile__(			\
+		"mov.l  1f, %0\n\t"     \
+		"or     %1, %0\n\t"     \
+		"jmp    @%0\n\t"        \
+		" nop\n\t"              \
+		".balign 4\n"           \
+		"1:     .long 2f\n"     \
+		"2:"                    \
+		: "=&r" (__dummy)       \
+		: "r" (0x20000000));    \
+  } while (0)
+
+/*
+ * Back to P1 area.
+ */
+#define back_to_P1()                                    \
+  do {                                                    \
+    unsigned long __dummy;                          \
+    __asm__ __volatile__(                           \
+		"nop;nop;nop;nop;nop;nop;nop\n\t"       \
+		"mov.l  1f, %0\n\t"                     \
+		"jmp    @%0\n\t"                        \
+		" nop\n\t"                              \
+		".balign 4\n"                           \
+		"1:     .long 2f\n"                     \
+		"2:"                                    \
+		: "=&r" (__dummy));                     \
+  } while (0)
+
+#define CACHE_VALID       1
+#define CACHE_UPDATED     2
+
+static inline void cache_wback_all(void)
+{
+	unsigned long addr, data, i, j;
+
+	jump_to_P2();
+	for (i = 0; i < CACHE_OC_NUM_ENTRIES; i++) {
+		for (j = 0; j < CACHE_OC_NUM_WAYS; j++) {
+			addr = CACHE_OC_ADDRESS_ARRAY
+				| (j << CACHE_OC_WAY_SHIFT)
+				| (i << CACHE_OC_ENTRY_SHIFT);
+			data = inl(addr);
+			if (data & CACHE_UPDATED) {
+				data &= ~CACHE_UPDATED;
+				outl(data, addr);
+			}
+		}
+	}
+	back_to_P1();
+}
+
+
+#define CACHE_ENABLE      0
+#define CACHE_DISABLE     1
+
+int cache_control(unsigned int cmd)
+{
+	unsigned long ccr;
+
+	jump_to_P2();
+	ccr = inl(CCR);
+
+	if (ccr & CCR_CACHE_ENABLE)
+		cache_wback_all();
+
+	if (cmd == CACHE_DISABLE)
+		outl(CCR_CACHE_STOP, CCR);
+	else
+		outl(CCR_CACHE_INIT, CCR);
+	back_to_P1();
+
+	return 0;
+}
diff --git a/arch/sh/cpu/sh3/config.mk b/arch/sh/cpu/sh3/config.mk
new file mode 100644
index 0000000000..f2da3686e8
--- /dev/null
+++ b/arch/sh/cpu/sh3/config.mk
@@ -0,0 +1,31 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2007
+# Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+#
+# (C) Copyright 2007
+# Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+#
+PLATFORM_CPPFLAGS += -m3
+PLATFORM_RELFLAGS += -ffixed-r13
diff --git a/arch/sh/cpu/sh3/cpu.c b/arch/sh/cpu/sh3/cpu.c
new file mode 100644
index 0000000000..8261d29d48
--- /dev/null
+++ b/arch/sh/cpu/sh3/cpu.c
@@ -0,0 +1,84 @@
+/*
+ * (C) Copyright 2007
+ * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * (C) Copyright 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/processor.h>
+
+int checkcpu(void)
+{
+	puts("CPU: SH3\n");
+	return 0;
+}
+
+int cpu_init(void)
+{
+	return 0;
+}
+
+int cleanup_before_linux(void)
+{
+	disable_interrupts();
+	return 0;
+}
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	disable_interrupts();
+	reset_cpu(0);
+	return 0;
+}
+
+void flush_cache(unsigned long addr, unsigned long size)
+{
+
+}
+
+void icache_enable(void)
+{
+}
+
+void icache_disable(void)
+{
+}
+
+int icache_status(void)
+{
+	return 0;
+}
+
+void dcache_enable(void)
+{
+}
+
+void dcache_disable(void)
+{
+}
+
+int dcache_status(void)
+{
+	return 0;
+}
diff --git a/arch/sh/cpu/sh3/interrupts.c b/arch/sh/cpu/sh3/interrupts.c
new file mode 100644
index 0000000000..55284ccc08
--- /dev/null
+++ b/arch/sh/cpu/sh3/interrupts.c
@@ -0,0 +1,42 @@
+/*
+ * (C) Copyright 2007
+ * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * (C) Copyright 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+int interrupt_init(void)
+{
+	return 0;
+}
+
+void enable_interrupts(void)
+{
+
+}
+
+int disable_interrupts(void)
+{
+	return 0;
+}
diff --git a/arch/sh/cpu/sh3/start.S b/arch/sh/cpu/sh3/start.S
new file mode 100644
index 0000000000..c0f83261d1
--- /dev/null
+++ b/arch/sh/cpu/sh3/start.S
@@ -0,0 +1,77 @@
+/*
+ * (C) Copyright 2007
+ * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * (C) Copyright 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <version.h>
+
+	.text
+	.align	2
+
+	.global	_start
+_start:
+	mov.l	._lowlevel_init, r0
+100:	bsrf	r0
+	nop
+
+	bsr	1f
+	nop
+1:	sts	pr, r5
+	mov.l	._reloc_dst, r4
+	add	#(_start-1b), r5
+	mov.l	._reloc_dst_end, r6
+
+2:	mov.l	@r5+, r1
+	mov.l	r1, @r4
+	add	#4, r4
+	cmp/hs	r6, r4
+	bf	2b
+
+	mov.l	._bss_start, r4
+	mov.l	._bss_end, r5
+	mov	#0, r1
+
+3:	mov.l	r1, @r4			/* bss clear */
+	add	#4, r4
+	cmp/hs	r5, r4
+	bf	3b
+
+	mov.l	._gd_init, r13		/* global data */
+	mov.l	._stack_init, r15	/* stack */
+
+	mov.l	._sh_generic_init, r0
+	jsr	@r0
+	nop
+
+loop:
+	bra	loop
+
+	.align	2
+
+._lowlevel_init:	.long	(lowlevel_init - (100b + 4))
+._reloc_dst:		.long	reloc_dst
+._reloc_dst_end:	.long	reloc_dst_end
+._bss_start:		.long	bss_start
+._bss_end:		.long	bss_end
+._gd_init:		.long	(_start - CONFIG_SYS_GBL_DATA_SIZE)
+._stack_init:	.long	(_start - CONFIG_SYS_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16)
+._sh_generic_init:	.long	sh_generic_init
diff --git a/arch/sh/cpu/sh3/u-boot.lds b/arch/sh/cpu/sh3/u-boot.lds
new file mode 100644
index 0000000000..8afe1603ee
--- /dev/null
+++ b/arch/sh/cpu/sh3/u-boot.lds
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2007
+ * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * Copyright (C) 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * Copyright (C) 2008
+ * Mark Jonas <mark.jonas@de.bosch.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+OUTPUT_FORMAT("elf32-sh-linux", "elf32-sh-linux", "elf32-sh-linux")
+OUTPUT_ARCH(sh)
+ENTRY(_start)
+
+SECTIONS
+{
+	/*
+	 * entry and reloct_dst will be provided via ldflags
+	 */
+	. = .;
+
+	PROVIDE (_ftext = .);
+	PROVIDE (_fcode = .);
+	PROVIDE (_start = .);
+
+	.text :
+	{
+		arch/sh/cpu/sh3/start.o		(.text)
+		. = ALIGN(8192);
+		common/env_embedded.o	(.ppcenv)
+		. = ALIGN(8192);
+		common/env_embedded.o	(.ppcenvr)
+		. = ALIGN(8192);
+		*(.text)
+		. = ALIGN(4);
+	} =0xFF
+	PROVIDE (_ecode = .);
+	.rodata :
+	{
+		*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+		. = ALIGN(4);
+	}
+	PROVIDE (_etext = .);
+
+
+	PROVIDE (_fdata = .);
+	.data :
+	{
+		*(.data)
+		. = ALIGN(4);
+	}
+	PROVIDE (_edata = .);
+
+	PROVIDE (_fgot = .);
+	.got :
+	{
+		*(.got)
+		. = ALIGN(4);
+	}
+	PROVIDE (_egot = .);
+
+	PROVIDE (__u_boot_cmd_start = .);
+	.u_boot_cmd :
+	{
+		*(.u_boot_cmd)
+		. = ALIGN(4);
+	}
+	PROVIDE (__u_boot_cmd_end = .);
+
+	PROVIDE (reloc_dst_end = .);
+	/* _reloc_dst_end = .; */
+
+	PROVIDE (bss_start = .);
+	PROVIDE (__bss_start = .);
+	.bss :
+	{
+		*(.bss)
+		. = ALIGN(4);
+	}
+	PROVIDE (bss_end = .);
+
+	PROVIDE (_end = .);
+}
diff --git a/arch/sh/cpu/sh3/watchdog.c b/arch/sh/cpu/sh3/watchdog.c
new file mode 100644
index 0000000000..92bea74719
--- /dev/null
+++ b/arch/sh/cpu/sh3/watchdog.c
@@ -0,0 +1,33 @@
+/*
+ * (C) Copyright 2007
+ * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+
+int watchdog_init(void)
+{
+	return 0;
+}
+
+void reset_cpu(unsigned long ignored)
+{
+	while (1)
+		;
+}
diff --git a/arch/sh/cpu/sh4/Makefile b/arch/sh/cpu/sh4/Makefile
new file mode 100644
index 0000000000..3c96a49311
--- /dev/null
+++ b/arch/sh/cpu/sh4/Makefile
@@ -0,0 +1,54 @@
+#
+# (C) Copyright 2000-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2007
+# Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(CPU).a
+
+SOBJS	= start.o
+COBJS	= cpu.o interrupts.o watchdog.o cache.o
+
+SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+SOBJS	:= $(addprefix $(obj),$(SOBJS))
+
+$(LIB):	$(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/sh/cpu/sh4/cache.c b/arch/sh/cpu/sh4/cache.c
new file mode 100644
index 0000000000..377005cd4d
--- /dev/null
+++ b/arch/sh/cpu/sh4/cache.c
@@ -0,0 +1,108 @@
+/*
+ * (C) Copyright 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+/*
+ * Jump to P2 area.
+ * When handling TLB or caches, we need to do it from P2 area.
+ */
+#define jump_to_P2()			\
+  do {					\
+    unsigned long __dummy;		\
+    __asm__ __volatile__(		\
+		"mov.l	1f, %0\n\t"	\
+		"or	%1, %0\n\t"	\
+		"jmp	@%0\n\t"	\
+		" nop\n\t"		\
+		".balign 4\n"		\
+		"1:	.long 2f\n"	\
+		"2:"			\
+		: "=&r" (__dummy)	\
+		: "r" (0x20000000));	\
+  } while (0)
+
+/*
+ * Back to P1 area.
+ */
+#define back_to_P1()					\
+  do {							\
+    unsigned long __dummy;				\
+    __asm__ __volatile__(				\
+		"nop;nop;nop;nop;nop;nop;nop\n\t"	\
+		"mov.l	1f, %0\n\t"			\
+		"jmp	@%0\n\t"			\
+		" nop\n\t"				\
+		".balign 4\n"				\
+		"1:	.long 2f\n"			\
+		"2:"					\
+		: "=&r" (__dummy));			\
+  } while (0)
+
+#define CACHE_VALID       1
+#define CACHE_UPDATED     2
+
+static inline void cache_wback_all(void)
+{
+	unsigned long addr, data, i, j;
+
+	jump_to_P2();
+	for (i = 0; i < CACHE_OC_NUM_ENTRIES; i++){
+		for (j = 0; j < CACHE_OC_NUM_WAYS; j++) {
+			addr = CACHE_OC_ADDRESS_ARRAY | (j << CACHE_OC_WAY_SHIFT)
+				| (i << CACHE_OC_ENTRY_SHIFT);
+			data = inl(addr);
+			if (data & CACHE_UPDATED) {
+				data &= ~CACHE_UPDATED;
+				outl(data, addr);
+			}
+		}
+	}
+	back_to_P1();
+}
+
+
+#define CACHE_ENABLE      0
+#define CACHE_DISABLE     1
+
+int cache_control(unsigned int cmd)
+{
+	unsigned long ccr;
+
+	jump_to_P2();
+	ccr = inl(CCR);
+
+	if (ccr & CCR_CACHE_ENABLE)
+		cache_wback_all();
+
+	if (cmd == CACHE_DISABLE)
+		outl(CCR_CACHE_STOP, CCR);
+	else
+		outl(CCR_CACHE_INIT, CCR);
+	back_to_P1();
+
+	return 0;
+}
diff --git a/arch/sh/cpu/sh4/config.mk b/arch/sh/cpu/sh4/config.mk
new file mode 100644
index 0000000000..b3feb2a515
--- /dev/null
+++ b/arch/sh/cpu/sh4/config.mk
@@ -0,0 +1,28 @@
+#
+# (C) Copyright 2000-2004
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# (C) Copyright 2007
+# Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+#
+PLATFORM_CPPFLAGS += -m4-nofpu
+PLATFORM_RELFLAGS += -ffixed-r13
diff --git a/arch/sh/cpu/sh4/cpu.c b/arch/sh/cpu/sh4/cpu.c
new file mode 100644
index 0000000000..be410abf00
--- /dev/null
+++ b/arch/sh/cpu/sh4/cpu.c
@@ -0,0 +1,93 @@
+/*
+ * (C) Copyright 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <netdev.h>
+#include <asm/processor.h>
+#include <asm/cache.h>
+
+int checkcpu(void)
+{
+	puts("CPU: SH4\n");
+	return 0;
+}
+
+int cpu_init (void)
+{
+	return 0;
+}
+
+int cleanup_before_linux (void)
+{
+	disable_interrupts();
+	return 0;
+}
+
+int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	disable_interrupts();
+	reset_cpu (0);
+	return 0;
+}
+
+void flush_cache (unsigned long addr, unsigned long size)
+{
+	dcache_invalid_range( addr , addr + size );
+}
+
+void icache_enable (void)
+{
+	cache_control(0);
+}
+
+void icache_disable (void)
+{
+	cache_control(1);
+}
+
+int icache_status (void)
+{
+	return 0;
+}
+
+void dcache_enable (void)
+{
+}
+
+void dcache_disable (void)
+{
+}
+
+int dcache_status (void)
+{
+	return 0;
+}
+
+int cpu_eth_init(bd_t *bis)
+{
+#ifdef CONFIG_SH_ETHER
+	sh_eth_initialize(bis);
+#endif
+	return 0;
+}
diff --git a/arch/sh/cpu/sh4/interrupts.c b/arch/sh/cpu/sh4/interrupts.c
new file mode 100644
index 0000000000..6988ecc7c2
--- /dev/null
+++ b/arch/sh/cpu/sh4/interrupts.c
@@ -0,0 +1,38 @@
+/*
+ * (C) Copyright 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+
+int interrupt_init (void)
+{
+	return 0;
+}
+
+void enable_interrupts (void)
+{
+
+}
+
+int disable_interrupts (void){
+	return 0;
+}
diff --git a/arch/sh/cpu/sh4/start.S b/arch/sh/cpu/sh4/start.S
new file mode 100644
index 0000000000..711ae668d5
--- /dev/null
+++ b/arch/sh/cpu/sh4/start.S
@@ -0,0 +1,74 @@
+/*
+ * (C) Copyright 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <version.h>
+
+	.text
+	.align	2
+
+	.global	_start
+_start:
+	mov.l	._lowlevel_init, r0
+100:	bsrf	r0
+	nop
+
+	bsr	1f
+	nop
+1:	sts	pr, r5
+	mov.l	._reloc_dst, r4
+	add	#(_start-1b), r5
+	mov.l	._reloc_dst_end, r6
+
+2:	mov.l	@r5+, r1
+	mov.l	r1, @r4
+	add	#4, r4
+	cmp/hs	r6, r4
+	bf	2b
+
+	mov.l	._bss_start, r4
+	mov.l	._bss_end, r5
+	mov	#0, r1
+
+3:	mov.l	r1, @r4			/* bss clear */
+	add	#4, r4
+	cmp/hs	r5, r4
+	bf	3b
+
+	mov.l	._gd_init, r13		/* global data */
+	mov.l	._stack_init, r15	/* stack */
+
+	mov.l	._sh_generic_init, r0
+	jsr	@r0
+	nop
+
+loop:
+	bra	loop
+
+	.align	2
+
+._lowlevel_init:	.long	(lowlevel_init - (100b + 4))
+._reloc_dst:		.long	reloc_dst
+._reloc_dst_end:	.long	reloc_dst_end
+._bss_start:		.long	bss_start
+._bss_end:		.long	bss_end
+._gd_init:		.long	(_start - CONFIG_SYS_GBL_DATA_SIZE)
+._stack_init:		.long	(_start - CONFIG_SYS_GBL_DATA_SIZE - CONFIG_SYS_MALLOC_LEN - 16)
+._sh_generic_init:	.long	sh_generic_init
diff --git a/arch/sh/cpu/sh4/u-boot.lds b/arch/sh/cpu/sh4/u-boot.lds
new file mode 100644
index 0000000000..d3719df543
--- /dev/null
+++ b/arch/sh/cpu/sh4/u-boot.lds
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2007
+ * Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
+ *
+ * Copyright (C) 2008-2009
+ * Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+OUTPUT_FORMAT("elf32-sh-linux", "elf32-sh-linux", "elf32-sh-linux")
+OUTPUT_ARCH(sh)
+ENTRY(_start)
+
+SECTIONS
+{
+	/*
+	 * entry and reloct_dst will be provided via ldflags
+	 */
+	. = .;
+
+	PROVIDE (_ftext = .);
+	PROVIDE (_fcode = .);
+	PROVIDE (_start = .);
+
+	.text :
+	{
+		arch/sh/cpu/sh4/start.o		(.text)
+		. = ALIGN(8192);
+		common/env_embedded.o	(.ppcenv)
+		. = ALIGN(8192);
+		common/env_embedded.o	(.ppcenvr)
+		. = ALIGN(8192);
+		*(.text)
+		. = ALIGN(4);
+	} =0xFF
+	PROVIDE (_ecode = .);
+	.rodata :
+	{
+		*(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+		. = ALIGN(4);
+	}
+	PROVIDE (_etext = .);
+
+
+	PROVIDE (_fdata = .);
+	.data :
+	{
+		*(.data)
+		. = ALIGN(4);
+	}
+	PROVIDE (_edata = .);
+
+	PROVIDE (_fgot = .);
+	.got :
+	{
+		*(.got)
+		. = ALIGN(4);
+	}
+	PROVIDE (_egot = .);
+
+	PROVIDE (__u_boot_cmd_start = .);
+	.u_boot_cmd :
+	{
+		*(.u_boot_cmd)
+		. = ALIGN(4);
+	}
+	PROVIDE (__u_boot_cmd_end = .);
+
+	PROVIDE (reloc_dst_end = .);
+	/* _reloc_dst_end = .; */
+
+	PROVIDE (bss_start = .);
+	PROVIDE (__bss_start = .);
+	.bss (NOLOAD) :
+	{
+		*(.bss)
+		. = ALIGN(4);
+	}
+	PROVIDE (bss_end = .);
+
+	PROVIDE (_end = .);
+}
diff --git a/arch/sh/cpu/sh4/watchdog.c b/arch/sh/cpu/sh4/watchdog.c
new file mode 100644
index 0000000000..f6924290f0
--- /dev/null
+++ b/arch/sh/cpu/sh4/watchdog.c
@@ -0,0 +1,71 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+
+#define WDT_BASE	WTCNT
+
+#define WDT_WD		(1 << 6)
+#define WDT_RST_P	(0)
+#define WDT_RST_M	(1 << 5)
+#define WDT_ENABLE	(1 << 7)
+
+#if defined(CONFIG_WATCHDOG)
+static unsigned char csr_read(void)
+{
+	return inb(WDT_BASE + 0x04);
+}
+
+static void cnt_write(unsigned char value)
+{
+	outl((unsigned short)value | 0x5A00, WDT_BASE + 0x00);
+}
+
+static void csr_write(unsigned char value)
+{
+	outl((unsigned short)value | 0xA500, WDT_BASE + 0x04);
+}
+
+void watchdog_reset(void)
+{
+	outl(0x55000000, WDT_BASE + 0x08);
+}
+
+int watchdog_init(void)
+{
+	/* Set overflow time*/
+	cnt_write(0);
+	/* Power on reset */
+	csr_write(WDT_WD|WDT_RST_P|WDT_ENABLE);
+
+	return 0;
+}
+
+int watchdog_disable(void)
+{
+	csr_write(csr_read() & ~WDT_ENABLE);
+	return 0;
+}
+#endif
+
+void reset_cpu(unsigned long ignored)
+{
+	while (1)
+		;
+}