Add new board specific commands for TQM5200/STK52XX

- Sound commands (beep, wav, sound)
- Test commands (led, can, backlight, rs232)
Patch by Martin Krause, 02 May 2005

4 files changed, 1223 insertions, 3 deletions

diff --git a/board/cmc_pu2/cmc_pu2.c b/board/cmc_pu2/cmc_pu2.c
index e54ca9cc37..b5e5e28892 100644
--- a/board/cmc_pu2/cmc_pu2.c
+++ b/board/cmc_pu2/cmc_pu2.c
@@ -138,7 +138,7 @@ int hw_detect (void)
 	pio->PIO_ODR = AT91C_PIO_PB12;
 	pio->PIO_PPUDR = AT91C_PIO_PB12;
 	pio->PIO_PER = AT91C_PIO_PB12;
-	
+
 	/* configure PB13 as input without pull up */
 	pio->PIO_ODR = AT91C_PIO_PB13;
 	pio->PIO_PPUDR = AT91C_PIO_PB13;
diff --git a/board/o2dnt/flash.c b/board/o2dnt/flash.c
index 186e0d2938..dbb49f75ef 100644
--- a/board/o2dnt/flash.c
+++ b/board/o2dnt/flash.c
@@ -585,4 +585,3 @@ static unsigned char intel_sector_protected (flash_info_t *info, ushort sector)
 
 	return ret;
 }
-
diff --git a/board/tqm5200/Makefile b/board/tqm5200/Makefile
index 50ef578aae..c234332566 100644
--- a/board/tqm5200/Makefile
+++ b/board/tqm5200/Makefile
@@ -26,7 +26,7 @@ include $(TOPDIR)/config.mk
 LIB	= lib$(BOARD).a
 
 #OBJS	:= $(BOARD).o flash.o
-OBJS	:= $(BOARD).o
+OBJS	:= $(BOARD).o cmd_stk52xx.o
 
 $(LIB):	$(OBJS) $(SOBJS)
 	$(AR) crv $@ $(OBJS)
diff --git a/board/tqm5200/cmd_stk52xx.c b/board/tqm5200/cmd_stk52xx.c
new file mode 100755
index 0000000000..c30e9dfdfd
--- /dev/null
+++ b/board/tqm5200/cmd_stk52xx.c
@@ -0,0 +1,1221 @@
+/*
+ * (C) Copyright 2005
+ * Martin Krause, TQ-Systems GmbH, martin.krause@tqs.de.
+ *
+ * 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
+ */
+
+/*
+ * SKT52XX specific functions
+ */
+/*#define DEBUG*/
+
+#include <common.h>
+#include <command.h>
+
+#if (CONFIG_COMMANDS & CFG_CMD_BSP)
+
+#define DEFAULT_VOL	45
+#define DEFAULT_FREQ	500
+#define DEFAULT_DURATION	200
+#define LEFT		1
+#define RIGHT		2
+#define LEFT_RIGHT	3
+#define BL_OFF		0
+#define BL_ON		1
+
+#define SM501_GPIO_CTRL_LOW		0x00000008UL
+#define SM501_GPIO_CTRL_HIGH		0x0000000CUL
+#define SM501_POWER_MODE0_GATE		0x00000040UL
+#define SM501_POWER_MODE1_GATE		0x00000048UL
+#define POWER_MODE_GATE_GPIO_PWM_I2C	0x00000040UL
+#define SM501_GPIO_DATA_LOW 		0x00010000UL
+#define SM501_GPIO_DATA_HIGH		0x00010004UL
+#define SM501_GPIO_DATA_DIR_LOW		0x00010008UL
+#define SM501_GPIO_DATA_DIR_HIGH	0x0001000CUL
+#define SM501_PANEL_DISPLAY_CONTROL	0x00080000UL
+
+static int i2s_squarewave(unsigned long duration, unsigned int freq,
+			  unsigned int channel);
+static int i2s_sawtooth(unsigned long duration, unsigned int freq,
+			unsigned int channel);
+static void spi_init(void);
+static int spi_transmit(unsigned char data);
+static void pcm1772_write_reg(unsigned char addr, unsigned char data);
+static void set_attenuation(unsigned char attenuation);
+
+#ifdef CONFIG_STK52XX
+static void spi_init(void)
+{
+	struct mpc5xxx_spi *spi = (struct mpc5xxx_spi*)MPC5XXX_SPI;
+	struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
+
+	/* PSC3 as SPI and GPIOs */
+	gpio->port_config &= 0xFFFFF0FF;
+	gpio->port_config |= 0x00000800;
+	/*
+	 * Its important to use the correct order when initializing the
+	 * registers
+	 */
+	spi->ddr = 0x0F; /* set all SPI pins as output */
+	spi->pdr = 0x08; /* set SS high */
+	spi->cr1 = 0x50; /* SPI is master, SS is general purpose output */
+	spi->cr2 = 0x00; /* normal operation */
+	spi->brr = 0xFF; /* baud rate: IPB clock / 2048 */
+}
+
+static int spi_transmit(unsigned char data)
+{
+	int dummy;
+	struct mpc5xxx_spi *spi = (struct mpc5xxx_spi*)MPC5XXX_SPI;
+
+	spi->dr = data;
+	/* wait for SPI transmission completed */
+	while(!(spi->sr & 0x80))
+	{
+		if (spi->sr & 0x40)	/* if write collision occured */
+		{
+			/* do dummy read to clear status register */
+			dummy = spi->dr;
+			printf ("SPI write collision\n");
+			return -1;
+		}
+	}
+	return (spi->dr);
+}
+
+static void pcm1772_write_reg(unsigned char addr, unsigned char data)
+{
+	struct mpc5xxx_spi *spi = (struct mpc5xxx_spi*)MPC5XXX_SPI;
+
+	spi->pdr = 0x00; /* Set SS low */
+	spi_transmit(addr);
+	spi_transmit(data);
+	/* wait some time to meet MS# hold time of PCM1772 */
+	udelay (1);
+	spi->pdr = 0x08; /* set SS high */
+}
+
+static void set_attenuation(unsigned char attenuation)
+{
+	pcm1772_write_reg(0x01, attenuation); /* left channel */
+	debug ("PCM1772 attenuation left set to %d.\n", attenuation);
+	pcm1772_write_reg(0x02, attenuation); /* right channel */
+	debug ("PCM1772 attenuation right set to %d.\n", attenuation);
+}
+
+void amplifier_init(void)
+{
+	static int init_done = 0;
+	int i;
+	struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
+
+	/* Do this only once, because of the long time delay */
+	if (!init_done) {
+		/* configure PCM1772 audio format as I2S */
+		pcm1772_write_reg(0x03, 0x01);
+		/* enable audio amplifier */
+		gpio->sint_gpioe |=  0x02;	/* PSC3_5 as GPIO */
+		gpio->sint_ode &= ~0x02;	/* PSC3_5 is not open Drain */
+		gpio->sint_dvo &= ~0x02;	/* PSC3_5 is LOW */
+		gpio->sint_ddr |=  0x02;	/* PSC3_5 as output */
+		/*
+		 * wait some time to allow amplifier to recover from shutdown
+		 * mode.
+		 */
+		for(i = 0; i < 350; i++)
+			udelay(1000);
+		/*
+		 * The used amplifier (LM4867) has a so called "pop and click"
+		 * elmination filter. The input signal of the amplifier must
+		 * exceed a certain level once after power up to activate the
+		 * generation of the output signal. This is achieved by
+		 * sending a low frequent (nearly inaudible) sawtooth with a
+		 * sufficient signal level.
+		 */
+		set_attenuation(50);
+		i2s_sawtooth (200, 5, LEFT_RIGHT);
+		init_done = 1;
+	}
+}
+
+static void i2s_init(void)
+{
+	unsigned long i;
+	struct mpc5xxx_psc *psc = (struct mpc5xxx_psc*)MPC5XXX_PSC2;;
+	struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio*)MPC5XXX_GPIO;
+
+	gpio->port_config |= 0x00000070; /* PSC2 ports as Codec with MCLK */
+	psc->command = (PSC_RX_DISABLE | PSC_TX_DISABLE);
+	psc->sicr = 0x22E00000;		/* 16 bit data; I2S */
+
+	*(vu_long *)(CFG_MBAR + 0x22C) = 0x805d; /* PSC2 CDM MCLK config; MCLK
+						  * 5.617 MHz */
+	*(vu_long *)(CFG_MBAR + 0x214) |= 0x00000040; /* CDM clock enable
+						       * register */
+	psc->ccr = 0x1F03;	/* 16 bit data width; 5.617MHz MCLK */
+	psc->ctur = 0x0F;	/* 16 bit frame width */
+
+	for(i=0;i<128;i++)
+	{
+		psc->psc_buffer_32 = 0; /* clear tx fifo */
+	}
+}
+
+static int i2s_play_wave(unsigned long addr, unsigned long len)
+{
+	unsigned long i;
+	unsigned char *wave_file = (char *)addr + 44;	/* quick'n dirty: skip
+							 * wav header*/
+	unsigned char swapped[4];
+	struct mpc5xxx_psc *psc = (struct mpc5xxx_psc*)MPC5XXX_PSC2;
+
+	/*
+	 * play wave file in memory; bytes/words are be swapped
+	 */
+	psc->command = (PSC_RX_ENABLE | PSC_TX_ENABLE);
+
+	for(i = 0;i < (len / 4); i++) {
+		swapped[3]=*wave_file++;
+		swapped[2]=*wave_file++;
+		swapped[1]=*wave_file++;
+		swapped[0]=*wave_file++;
+		psc->psc_buffer_32 =  *((unsigned long*)swapped);
+		while (psc->tfnum > 400) {
+			if(ctrlc())
+				return 0;
+		}
+	}
+	while (psc->tfnum > 0);		/* wait for fifo empty */
+	udelay (100);
+	psc->command = (PSC_RX_DISABLE | PSC_TX_DISABLE);
+	return 0;
+}
+
+static int i2s_sawtooth(unsigned long duration, unsigned int freq,
+			unsigned int channel)
+{
+	long i,j;
+	unsigned long data;
+	struct mpc5xxx_psc *psc = (struct mpc5xxx_psc*)MPC5XXX_PSC2;
+
+	psc->command = (PSC_RX_ENABLE | PSC_TX_ENABLE);
+
+	/*
+	 * Generate sawtooth. Start with middle level up to highest level. Then
+	 * go to lowest level and back to middle level.
+	 */
+	for(j = 0; j < ((duration * freq) / 1000); j++)	{
+		for(i = 0; i <= 0x7FFF; i += (0x7FFF/(44100/(freq*4))))	{
+			data = (i & 0xFFFF);
+			/* data format: right data left data) */
+			if (channel == LEFT_RIGHT)
+				data |= (data<<16);
+			if (channel == RIGHT)
+				data = (data<<16);
+			psc->psc_buffer_32 = data;
+			while (psc->tfnum > 400);
+		}
+		for(i = 0x7FFF; i >= -0x7FFF; i -= (0xFFFF/(44100/(freq*2)))) {
+			data = (i & 0xFFFF);
+			/* data format: right data left data) */
+			if (channel == LEFT_RIGHT)
+				data |= (data<<16);
+			if (channel == RIGHT)
+				data = (data<<16);
+			psc->psc_buffer_32 = data;
+			while (psc->tfnum > 400);
+		}
+		for(i = -0x7FFF; i <= 0; i += (0x7FFF/(44100/(freq*4)))) {
+			data = (i & 0xFFFF);
+			/* data format: right data left data) */
+			if (channel == LEFT_RIGHT)
+				data |= (data<<16);
+			if (channel == RIGHT)
+				data = (data<<16);
+			psc->psc_buffer_32 = data;
+			while (psc->tfnum > 400);
+		}
+	}
+	while (psc->tfnum > 0);		/* wait for fifo empty */
+	udelay (100);
+	psc->command = (PSC_RX_DISABLE | PSC_TX_DISABLE);
+
+	return 0;
+}
+
+static int i2s_squarewave(unsigned long duration, unsigned int freq,
+			 unsigned int channel)
+{
+	long i,j;
+	unsigned long data;
+	struct mpc5xxx_psc *psc = (struct mpc5xxx_psc*)MPC5XXX_PSC2;
+
+	psc->command = (PSC_RX_ENABLE | PSC_TX_ENABLE);
+
+	/*
+	 * Generate sqarewave. Start with high level, duty cycle 1:1.
+	 */
+	for(j = 0; j < ((duration * freq) / 1000); j++)	{
+		for(i = 0; i < (44100/(freq*2)); i ++) {
+			data = 0x7FFF;
+			/* data format: right data left data) */
+			if (channel == LEFT_RIGHT)
+				data |= (data<<16);
+			if (channel == RIGHT)
+				data = (data<<16);
+			psc->psc_buffer_32 = data;
+			while (psc->tfnum > 400);
+		}
+		for(i = 0; i < (44100/(freq*2)); i ++) {
+			data = 0x8000;
+			/* data format: right data left data) */
+			if (channel == LEFT_RIGHT)
+				data |= (data<<16);
+			if (channel == RIGHT)
+				data = (data<<16);
+			psc->psc_buffer_32 = data;
+			while (psc->tfnum > 400);
+		}
+	}
+	while (psc->tfnum > 0);		/* wait for fifo empty */
+	udelay (100);
+	psc->command = (PSC_RX_DISABLE | PSC_TX_DISABLE);
+
+	return 0;
+}
+
+static int cmd_sound(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	unsigned long reg, val, duration;
+	unsigned char *tmp;
+	unsigned int freq, channel;
+	unsigned char volume;
+	int rcode = 1;
+
+#ifdef CONFIG_STK52XX_REV100
+	printf ("Revision 100 of STK52XX not supported!\n");
+	return 1;
+#endif
+	spi_init();
+	i2s_init();
+	amplifier_init();
+
+	if ((tmp = getenv ("volume")) != NULL) {
+		volume = simple_strtoul (tmp, NULL, 10);
+	} else {
+		volume = DEFAULT_VOL;
+	}
+	set_attenuation(volume);
+
+	switch (argc) {
+	case 0:
+	case 1:
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	case 2:
+		if (strncmp(argv[1],"saw",3) == 0) {
+			printf ("Play sawtooth\n");
+			rcode = i2s_sawtooth (DEFAULT_DURATION, DEFAULT_FREQ,
+					      LEFT_RIGHT);
+			return rcode;
+		} else if (strncmp(argv[1],"squ",3) == 0) {
+			printf ("Play squarewave\n");
+			rcode = i2s_squarewave (DEFAULT_DURATION, DEFAULT_FREQ,
+						LEFT_RIGHT);
+			return rcode;
+		}
+
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	case 3:
+		if (strncmp(argv[1],"saw",3) == 0) {
+			duration = simple_strtoul(argv[2], NULL, 10);
+			printf ("Play sawtooth\n");
+			rcode = i2s_sawtooth (duration, DEFAULT_FREQ,
+					      LEFT_RIGHT);
+			return rcode;
+		} else if (strncmp(argv[1],"squ",3) == 0) {
+			duration = simple_strtoul(argv[2], NULL, 10);
+			printf ("Play squarewave\n");
+			rcode = i2s_squarewave (duration, DEFAULT_FREQ,
+						LEFT_RIGHT);
+			return rcode;
+		}
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	case 4:
+		if (strncmp(argv[1],"saw",3) == 0) {
+			duration = simple_strtoul(argv[2], NULL, 10);
+			freq = (unsigned int)simple_strtoul(argv[3], NULL, 10);
+			printf ("Play sawtooth\n");
+			rcode = i2s_sawtooth (duration, freq,
+					      LEFT_RIGHT);
+			return rcode;
+		} else if (strncmp(argv[1],"squ",3) == 0) {
+			duration = simple_strtoul(argv[2], NULL, 10);
+			freq = (unsigned int)simple_strtoul(argv[3], NULL, 10);
+			printf ("Play squarewave\n");
+			rcode = i2s_squarewave (duration, freq,
+						LEFT_RIGHT);
+			return rcode;
+		} else if (strcmp(argv[1],"pcm1772") == 0) {
+			reg = simple_strtoul(argv[2], NULL, 10);
+			val = simple_strtoul(argv[3], NULL, 10);
+			printf("Set PCM1772 %lu. %lu\n", reg, val);
+			pcm1772_write_reg((uchar)reg, (uchar)val);
+			return 0;
+		}
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	case 5:
+		if (strncmp(argv[1],"saw",3) == 0) {
+			duration = simple_strtoul(argv[2], NULL, 10);
+			freq = (unsigned int)simple_strtoul(argv[3], NULL, 10);
+			if (strncmp(argv[4],"l",1) == 0)
+				channel = LEFT;
+			else if (strncmp(argv[4],"r",1) == 0)
+				channel = RIGHT;
+			else
+				channel = LEFT_RIGHT;
+			printf ("Play squarewave\n");
+			rcode = i2s_sawtooth (duration, freq,
+					      channel);
+			return rcode;
+		} else if (strncmp(argv[1],"squ",3) == 0) {
+			duration = simple_strtoul(argv[2], NULL, 10);
+			freq = (unsigned int)simple_strtoul(argv[3], NULL, 10);
+			if (strncmp(argv[4],"l",1) == 0)
+				channel = LEFT;
+			else if (strncmp(argv[4],"r",1) == 0)
+				channel = RIGHT;
+			else
+				channel = LEFT_RIGHT;
+			printf ("Play squarewave\n");
+			rcode = i2s_squarewave (duration, freq,
+						channel);
+			return rcode;
+		}
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+	printf ("Usage:\nsound cmd [arg1] [arg2] ...\n");
+	return 1;
+}
+
+static int cmd_wav(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	unsigned long length, addr;
+	unsigned char volume;
+	int rcode = 1;
+	char *tmp;
+
+#ifdef CONFIG_STK52XX_REV100
+	printf ("Revision 100 of STK52XX not supported!\n");
+	return 1;
+#endif
+	spi_init();
+	i2s_init();
+	amplifier_init();
+
+	switch (argc) {
+
+	case 3:
+		length = simple_strtoul(argv[2], NULL, 16);
+		addr = simple_strtoul(argv[1], NULL, 16);
+		break;
+
+	case 2:
+		if ((tmp = getenv ("filesize")) != NULL) {
+			length = simple_strtoul (tmp, NULL, 16);
+		} else {
+			puts ("No filesize provided\n");
+			return 1;
+		}
+		addr = simple_strtoul(argv[1], NULL, 16);
+
+	case 1:
+		if ((tmp = getenv ("filesize")) != NULL) {
+			length = simple_strtoul (tmp, NULL, 16);
+		} else {
+			puts ("No filesize provided\n");
+			return 1;
+		}
+		if ((tmp = getenv ("loadaddr")) != NULL) {
+			addr = simple_strtoul (tmp, NULL, 16);
+		} else {
+			puts ("No loadaddr provided\n");
+			return 1;
+		}
+		break;
+
+	default:
+		printf("Usage:\nwav <addr> <length[s]\n");
+		return 1;
+		break;
+	}
+
+	if ((tmp = getenv ("volume")) != NULL) {
+		volume = simple_strtoul (tmp, NULL, 10);
+	} else {
+		volume = DEFAULT_VOL;
+	}
+	set_attenuation(volume);
+
+	printf("Play wave file at %#p with length %#x\n", addr, length);
+	rcode = i2s_play_wave(addr, length);
+
+	return rcode;
+}
+
+static int cmd_beep(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	unsigned char volume;
+	unsigned int channel;
+	int rcode;
+	char *tmp;
+
+#ifdef CONFIG_STK52XX_REV100
+	printf ("Revision 100 of STK52XX not supported!\n");
+	return 1;
+#endif
+	spi_init();
+	i2s_init();
+	amplifier_init();
+
+	switch (argc) {
+	case 0:
+	case 1:
+		channel = LEFT_RIGHT;
+		break;
+	case 2:
+		if (strncmp(argv[1],"l",1) == 0)
+			channel = LEFT;
+		else if (strncmp(argv[1],"r",1) == 0)
+			channel = RIGHT;
+		else
+			channel = LEFT_RIGHT;
+		break;
+	default:
+		printf ("Usage:\n%s\n", cmdtp->usage);
+		return 1;
+	}
+
+	if ((tmp = getenv ("volume")) != NULL) {
+		volume = simple_strtoul (tmp, NULL, 10);
+	} else {
+		volume = DEFAULT_VOL;
+	}
+	set_attenuation(volume);
+
+	printf("Beep on ");
+	if (channel == LEFT)
+		printf ("left ");
+	else if (channel == RIGHT)
+		printf ("right ");
+	else
+		printf ("left and right ");
+	printf ("channel\n");
+
+	rcode = i2s_squarewave (DEFAULT_DURATION, DEFAULT_FREQ, channel);
+
+	return rcode;
+}
+
+void led_init(void)
+{
+	struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
+	struct mpc5xxx_gpt_0_7 *gpt = (struct mpc5xxx_gpt_0_7 *)MPC5XXX_GPT;
+
+	/* configure PSC3 for SPI and GPIO */
+	gpio->port_config &= ~(0x00000F00);
+	gpio->port_config |=   0x00000800;
+
+	gpio->simple_gpioe &= ~(0x00000F00);
+	gpio->simple_gpioe |=   0x00000F00;
+
+	gpio->simple_ddr &= ~(0x00000F00);
+	gpio->simple_ddr |=   0x00000F00;
+
+	/* configure timer 4-7 for simple GPIO output */
+	gpt->gpt4.emsr |=  0x00000024;
+	gpt->gpt5.emsr |=  0x00000024;
+	gpt->gpt6.emsr |=  0x00000024;
+	gpt->gpt7.emsr |=  0x00000024;
+
+
+	/* enable SM501 GPIO control (in both power modes) */
+	*(vu_long *) (SM501_MMIO_BASE+SM501_POWER_MODE0_GATE) |=
+		POWER_MODE_GATE_GPIO_PWM_I2C;
+	*(vu_long *) (SM501_MMIO_BASE+SM501_POWER_MODE1_GATE) |=
+		POWER_MODE_GATE_GPIO_PWM_I2C;
+
+	/* configure SM501 gpio pins 24-27 as output */
+	*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_CTRL_LOW) &= ~(0xF << 24);
+	*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_DIR_LOW) |= (0xF << 24);
+
+	/* configure SM501 gpio pins 48-51 as output */
+	*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_DIR_HIGH) |= (0xF << 16);
+}
+
+/*
+ * return 1 if led number unknown
+ * return 0 else
+ */
+int do_led(char *argv[])
+{
+	struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
+	struct mpc5xxx_gpt_0_7 *gpt = (struct mpc5xxx_gpt_0_7 *)MPC5XXX_GPT;
+
+	switch 	(simple_strtoul(argv[2], NULL, 10)) {
+
+	case 0:
+		if (strcmp (argv[3], "on") == 0) {
+			gpio->simple_dvo |=   (1 << 8);
+		} else {
+			gpio->simple_dvo &= ~(1 << 8);
+		}
+		break;
+
+	case 1:
+		if (strcmp (argv[3], "on") == 0) {
+			gpio->simple_dvo |=   (1 << 9);
+		} else {
+			gpio->simple_dvo &= ~(1 << 9);
+		}
+		break;
+
+	case 2:
+		if (strcmp (argv[3], "on") == 0) {
+			gpio->simple_dvo |=   (1 << 10);
+		} else {
+			gpio->simple_dvo &= ~(1 << 10);
+		}
+		break;
+
+	case 3:
+		if (strcmp (argv[3], "on") == 0) {
+			gpio->simple_dvo |=   (1 << 11);
+		} else {
+			gpio->simple_dvo &= ~(1 << 11);
+		}
+		break;
+
+	case 4:
+		if (strcmp (argv[3], "on") == 0) {
+			gpt->gpt4.emsr |=  (1 << 4);
+		} else {
+			gpt->gpt4.emsr &=  ~(1 << 4);
+		}
+		break;
+
+	case 5:
+		if (strcmp (argv[3], "on") == 0) {
+			gpt->gpt5.emsr |=  (1 << 4);
+		} else {
+			gpt->gpt5.emsr &=  ~(1 << 4);
+		}
+		break;
+
+	case 6:
+		if (strcmp (argv[3], "on") == 0) {
+			gpt->gpt6.emsr |=  (1 << 4);
+		} else {
+			gpt->gpt6.emsr &=  ~(1 << 4);
+		}
+		break;
+
+	case 7:
+		if (strcmp (argv[3], "on") == 0) {
+			gpt->gpt7.emsr |=  (1 << 4);
+		} else {
+			gpt->gpt7.emsr &=  ~(1 << 4);
+		}
+		break;
+
+	case 24:
+		if (strcmp (argv[3], "on") == 0) {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_LOW) |=
+				(0x1 << 24);
+		} else {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_LOW) &=
+				~(0x1 << 24);
+		}
+		break;
+
+	case 25:
+		if (strcmp (argv[3], "on") == 0) {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_LOW) |=
+				(0x1 << 25);
+		} else {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_LOW) &=
+				~(0x1 << 25);
+		}
+		break;
+
+	case 26:
+		if (strcmp (argv[3], "on") == 0) {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_LOW) |=
+				(0x1 << 26);
+		} else {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_LOW) &=
+				~(0x1 << 26);
+		}
+		break;
+
+	case 27:
+		if (strcmp (argv[3], "on") == 0) {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_LOW) |=
+				(0x1 << 27);
+		} else {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_LOW) &=
+				~(0x1 << 27);
+		}
+		break;
+
+	case 48:
+		if (strcmp (argv[3], "on") == 0) {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_HIGH) |=
+				(0x1 << 16);
+		} else {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_HIGH) &=
+				~(0x1 << 16);
+		}
+		break;
+
+	case 49:
+		if (strcmp (argv[3], "on") == 0) {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_HIGH) |=
+				(0x1 << 17);
+		} else {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_HIGH) &=
+				~(0x1 << 17);
+		}
+		break;
+
+	case 50:
+		if (strcmp (argv[3], "on") == 0) {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_HIGH) |=
+				(0x1 << 18);
+		} else {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_HIGH) &=
+				~(0x1 << 18);
+		}
+		break;
+
+	case 51:
+		if (strcmp (argv[3], "on") == 0) {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_HIGH) |=
+				(0x1 << 19);
+		} else {
+			*(vu_long *) (SM501_MMIO_BASE+SM501_GPIO_DATA_HIGH) &=
+				~(0x1 << 19);
+		}
+		break;
+
+	default:
+		printf ("%s: invalid led number %s\n", __FUNCTION__, argv[2]);
+		return 1;
+	}
+
+	return 0;
+}
+
+/*
+ * return 1 on CAN initialization failure
+ * return 0 if no failure
+ */
+int can_init(void)
+{
+	static int init_done = 0;
+	int i;
+	struct mpc5xxx_mscan *can1 =
+		(struct mpc5xxx_mscan *)(CFG_MBAR + 0x0900);
+	struct mpc5xxx_mscan *can2 =
+		(struct mpc5xxx_mscan *)(CFG_MBAR + 0x0980);
+
+	/* GPIO configuration of the CAN pins is done in TQM5200.h */
+
+	if (!init_done) {
+		/* init CAN 1 */
+		can1->canctl1 |= 0x80;	/* CAN enable */
+		udelay(100);
+
+		i = 0;
+		can1->canctl0 |= 0x02;	/* sleep mode */
+		/* wait until sleep mode reached */
+		while (!(can1->canctl1 & 0x02)) {
+			udelay(10);
+		i++;
+		if (i == 10) {
+			printf ("%s: CAN1 initialize error, "
+				"can not enter sleep mode!\n",
+				__FUNCTION__);
+			return 1;
+		}
+		}
+		i = 0;
+		can1->canctl0 = 0x01;	/* enter init mode */
+		/* wait until init mode reached */
+		while (!(can1->canctl1 & 0x01)) {
+			udelay(10);
+			i++;
+			if (i == 10) {
+				printf ("%s: CAN1 initialize error, "
+					"can not enter init mode!\n",
+					__FUNCTION__);
+				return 1;
+			}
+		}
+		can1->canctl1 = 0x80;
+		can1->canctl1 |= 0x40;
+		can1->canbtr0 = 0x0F;
+		can1->canbtr1 = 0x7F;
+		can1->canidac &= ~(0x30);
+		can1->canidar1 = 0x00;
+		can1->canidar3 = 0x00;
+		can1->canidar5 = 0x00;
+		can1->canidar7 = 0x00;
+		can1->canidmr0 = 0xFF;
+		can1->canidmr1 = 0xFF;
+		can1->canidmr2 = 0xFF;
+		can1->canidmr3 = 0xFF;
+		can1->canidmr4 = 0xFF;
+		can1->canidmr5 = 0xFF;
+		can1->canidmr6 = 0xFF;
+		can1->canidmr7 = 0xFF;
+
+		i = 0;
+		can1->canctl0 &= ~(0x01);	/* leave init mode */
+		can1->canctl0 &= ~(0x02);
+		/* wait until init and sleep mode left */
+		while ((can1->canctl1 & 0x01) || (can1->canctl1 & 0x02)) {
+			udelay(10);
+			i++;
+			if (i == 10) {
+				printf ("%s: CAN1 initialize error, "
+					"can not leave init/sleep mode!\n",
+					__FUNCTION__);
+				return 1;
+			}
+		}
+
+		/* init CAN 2 */
+		can2->canctl1 |= 0x80;	/* CAN enable */
+		udelay(100);
+
+		i = 0;
+		can2->canctl0 |= 0x02;	/* sleep mode */
+		/* wait until sleep mode reached */
+		while (!(can2->canctl1 & 0x02))	{
+			udelay(10);
+			i++;
+			if (i == 10) {
+				printf ("%s: CAN2 initialize error, "
+					"can not enter sleep mode!\n",
+					__FUNCTION__);
+				return 1;
+			}
+		}
+		i = 0;
+		can2->canctl0 = 0x01;	/* enter init mode */
+		/* wait until init mode reached */
+		while (!(can2->canctl1 & 0x01))	{
+			udelay(10);
+			i++;
+			if (i == 10) {
+				printf ("%s: CAN2 initialize error, "
+					"can not enter init mode!\n",
+					__FUNCTION__);
+				return 1;
+			}
+		}
+		can2->canctl1 = 0x80;
+		can2->canctl1 |= 0x40;
+		can2->canbtr0 = 0x0F;
+		can2->canbtr1 = 0x7F;
+		can2->canidac &= ~(0x30);
+		can2->canidar1 = 0x00;
+		can2->canidar3 = 0x00;
+		can2->canidar5 = 0x00;
+		can2->canidar7 = 0x00;
+		can2->canidmr0 = 0xFF;
+		can2->canidmr1 = 0xFF;
+		can2->canidmr2 = 0xFF;
+		can2->canidmr3 = 0xFF;
+		can2->canidmr4 = 0xFF;
+		can2->canidmr5 = 0xFF;
+		can2->canidmr6 = 0xFF;
+		can2->canidmr7 = 0xFF;
+		can2->canctl0 &= ~(0x01);	/* leave init mode */
+		can2->canctl0 &= ~(0x02);
+
+		i = 0;
+		/* wait until init mode left */
+		while ((can2->canctl1 & 0x01) || (can2->canctl1 & 0x02)) {
+			udelay(10);
+			i++;
+			if (i == 10) {
+				printf ("%s: CAN2 initialize error, "
+					"can not leave init/sleep mode!\n",
+					__FUNCTION__);
+				return 1;
+			}
+		}
+		init_done = 1;
+	}
+	return 0;
+}
+
+/*
+ * return 1 on CAN failure
+ * return 0 if no failure
+ */
+int do_can(char *argv[])
+{
+	int i;
+	struct mpc5xxx_mscan *can1 =
+		(struct mpc5xxx_mscan *)(CFG_MBAR + 0x0900);
+	struct mpc5xxx_mscan *can2 =
+		(struct mpc5xxx_mscan *)(CFG_MBAR + 0x0980);
+
+	/* send a message on CAN1 */
+	can1->cantbsel = 0x01;
+	can1->cantxfg.idr[0] = 0x55;
+	can1->cantxfg.idr[1] = 0x00;
+	can1->cantxfg.idr[1] &= ~0x8;
+	can1->cantxfg.idr[1] &= ~0x10;
+	can1->cantxfg.dsr[0] = 0xCC;
+	can1->cantxfg.dlr = 1;
+	can1->cantxfg.tbpr = 0;
+	can1->cantflg = 0x01;
+
+	i = 0;
+	while ((can1->cantflg & 0x01) == 0) {
+		i++;
+		if (i == 10) {
+			printf ("%s: CAN1 send timeout, "
+				"can not send message!\n",
+				__FUNCTION__);
+			return 1;
+		}
+		udelay(1000);
+	}
+	udelay(1000);
+
+	i = 0;
+	while (!(can2->canrflg & 0x01))	{
+		i++;
+		if (i == 10) {
+			printf ("%s: CAN2 receive timeout, "
+				"no message received!\n",
+				__FUNCTION__);
+			return 1;
+		}
+		udelay(1000);
+	}
+
+	if (can2->canrxfg.dsr[0] != 0xCC) {
+		printf ("%s: CAN2 receive error, "
+			 "data mismatch!\n",
+			__FUNCTION__);
+		return 1;
+	}
+
+	/* send a message on CAN2 */
+	can2->cantbsel = 0x01;
+	can2->cantxfg.idr[0] = 0x55;
+	can2->cantxfg.idr[1] = 0x00;
+	can2->cantxfg.idr[1] &= ~0x8;
+	can2->cantxfg.idr[1] &= ~0x10;
+	can2->cantxfg.dsr[0] = 0xCC;
+	can2->cantxfg.dlr = 1;
+	can2->cantxfg.tbpr = 0;
+	can2->cantflg = 0x01;
+
+	i = 0;
+	while ((can2->cantflg & 0x01) == 0) {
+		i++;
+		if (i == 10) {
+			printf ("%s: CAN2 send error, "
+				"can not send message!\n",
+				__FUNCTION__);
+			return 1;
+		}
+		udelay(1000);
+	}
+	udelay(1000);
+
+	i = 0;
+	while (!(can1->canrflg & 0x01))	{
+		i++;
+		if (i == 10) {
+			printf ("%s: CAN1 receive timeout, "
+				"no message received!\n",
+				__FUNCTION__);
+			return 1;
+		}
+		udelay(1000);
+	}
+
+	if (can1->canrxfg.dsr[0] != 0xCC) {
+		printf ("%s: CAN1 receive error 0x%02x\n",
+			__FUNCTION__, (can1->canrxfg.dsr[0]));
+		return 1;
+	}
+
+	return 0;
+}
+
+/*
+ * return 1 if rs232 port unknown
+ * return 2 on txd/rxd failure (only rs232 2)
+ * return 3 on rts/cts failure
+ * return 0 if no failure
+ */
+int do_rs232(char *argv[])
+{
+	int error_status = 0;
+	struct mpc5xxx_gpio *gpio = (struct mpc5xxx_gpio *)MPC5XXX_GPIO;
+	struct mpc5xxx_psc *psc1 = (struct mpc5xxx_psc *)MPC5XXX_PSC1;
+
+	switch 	(simple_strtoul(argv[2], NULL, 10)) {
+
+	case 1:
+		/* check RTS <-> CTS loop */
+		/* set rts to 0 */
+		psc1->op1 |= 0x01;
+
+		/* wait some time before requesting status */
+		udelay(10);
+
+		/* check status at cts */
+		if ((psc1->ip & 0x01) != 0) {
+			error_status = 3;
+			printf ("%s: failure at rs232_1, cts status is %d "
+				"(should be 0)\n",
+				__FUNCTION__, (psc1->ip & 0x01));
+		}
+
+		/* set rts to 1 */
+		psc1->op0 |= 0x01;
+
+		/* wait some time before requesting status */
+		udelay(10);
+
+		/* check status at cts */
+		if ((psc1->ip & 0x01) != 1) {
+			error_status = 3;
+			printf ("%s: failure at rs232_1, cts status is %d "
+				"(should be 1)\n",
+				__FUNCTION__, (psc1->ip & 0x01));
+		}
+
+		break;
+
+	case 2:
+		/* set PSC3_0, PSC3_2 as output and PSC3_1, PSC3_3 as input */
+		gpio->simple_ddr &= ~(0x00000F00);
+		gpio->simple_ddr |=   0x00000500;
+
+		/* check TXD <-> RXD loop */
+		/* set TXD to 1 */
+		gpio->simple_dvo |=   (1 << 8);
+
+		/* wait some time before requesting status */
+		udelay(10);
+
+		if ((gpio->simple_ival & 0x00000200) != 0x00000200) {
+			error_status = 2;
+			printf ("%s: failure at rs232_2, rxd status is %d "
+				"(should be 1)\n",
+				__FUNCTION__,
+				(gpio->simple_ival & 0x00000200) >> 9);
+		}
+
+		/* set TXD to 0 */
+		gpio->simple_dvo &= ~(1 << 8);
+
+		/* wait some time before requesting status */
+		udelay(10);
+
+		if ((gpio->simple_ival & 0x00000200) != 0x00000000) {
+			error_status = 2;
+			printf ("%s: failure at rs232_2, rxd status is %d "
+				"(should be 0)\n",
+				__FUNCTION__,
+				(gpio->simple_ival & 0x00000200) >> 9);
+		}
+
+		/* check RTS <-> CTS loop */
+		/* set RTS to 1 */
+		gpio->simple_dvo |=   (1 << 10);
+
+		/* wait some time before requesting status */
+		udelay(10);
+
+		if ((gpio->simple_ival & 0x00000800) != 0x00000800) {
+			error_status = 3;
+			printf ("%s: failure at rs232_2, cts status is %d "
+				"(should be 1)\n",
+				__FUNCTION__,
+				(gpio->simple_ival & 0x00000800) >> 11);
+		}
+
+		/* set RTS to 0 */
+		gpio->simple_dvo &= ~(1 << 10);
+
+		/* wait some time before requesting status */
+		udelay(10);
+
+		if ((gpio->simple_ival & 0x00000800) != 0x00000000) {
+			error_status = 3;
+			printf ("%s: failure at rs232_2, cts status is %d "
+				"(should be 0)\n",
+				__FUNCTION__,
+				(gpio->simple_ival & 0x00000800) >> 11);
+		}
+
+		/* set PSC3_0, PSC3_1, PSC3_2 and PSC3_3 as output */
+		gpio->simple_ddr &= ~(0x00000F00);
+		gpio->simple_ddr |=   0x00000F00;
+		break;
+
+	default:
+		printf ("%s: invalid rs232 number %s\n", __FUNCTION__, argv[2]);
+		error_status = 1;
+		break;
+	}
+
+	return error_status;
+}
+
+static void sm501_backlight (unsigned int state)
+{
+	if (state == BL_ON) {
+		*(vu_long *)(SM501_MMIO_BASE+SM501_PANEL_DISPLAY_CONTROL) |=
+			(1 << 26) | (1 << 27);
+	} else if (state == BL_OFF)
+		*(vu_long *)(SM501_MMIO_BASE+SM501_PANEL_DISPLAY_CONTROL) &=
+			~((1 << 26) | (1 << 27));
+}
+
+int cmd_fkt(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	int rcode;
+
+#ifdef CONFIG_STK52XX_REV100
+	printf ("Revision 100 of STK52XX not supported!\n");
+	return 1;
+#endif
+	led_init();
+	can_init();
+
+	switch (argc) {
+
+	case 0:
+	case 1:
+		break;
+
+	case 2:
+		if (strncmp (argv[1], "can", 3) == 0) {
+			rcode = do_can (argv);
+			if (rcode == 0)
+				printf ("OK\n");
+			else
+				printf ("Error\n");
+			return rcode;
+		}
+		break;
+
+	case 3:
+		if (strncmp (argv[1], "rs232", 3) == 0) {
+			rcode = do_rs232 (argv);
+			if (rcode == 0)
+				printf ("OK\n");
+			else
+				printf ("Error\n");
+			return rcode;
+		} else if (strncmp (argv[1], "backlight", 4) == 0) {
+			if (strncmp (argv[2], "on", 2) == 0) {
+				sm501_backlight (BL_ON);
+				return 0;
+			}
+			else if (strncmp (argv[2], "off", 3) == 0) {
+				sm501_backlight (BL_OFF);
+				return 0;
+			}
+		}
+		break;
+
+	case 4:
+		if (strcmp (argv[1], "led") == 0) {
+			return (do_led (argv));
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	printf ("Usage:\nfkt cmd [arg1] [arg2] ...\n");
+	return 1;
+}
+
+
+U_BOOT_CMD(
+	sound ,    5,    1,     cmd_sound,
+	"sound   - Sound sub-system\n",
+	"saw [duration] [freq] [channel]\n"
+	"    - generate sawtooth for 'duration' ms with frequency 'freq'\n"
+	"      on left \"l\" or right \"r\" channel\n"
+	"sound square [duration] [freq] [channel]\n"
+	"    - generate squarewave for 'duration' ms with frequency 'freq'\n"
+	"      on left \"l\" or right \"r\" channel\n"
+	"pcm1772 reg val\n"
+);
+
+U_BOOT_CMD(
+	wav ,    3,    1,     cmd_wav,
+	"wav     - play wav file\n",
+	"[addr] [bytes]\n"
+	"    - play wav file at address 'addr' with length 'bytes'\n"
+);
+
+U_BOOT_CMD(
+	beep ,    2,    1,     cmd_beep,
+	"beep    - play short beep\n",
+	"[channel]\n"
+	"    - play short beep on \"l\"eft or \"r\"ight channel\n"
+);
+
+U_BOOT_CMD(
+	fkt ,	4,	1,	cmd_fkt,
+	"fkt     - Function test routines\n",
+	"led number on/off\n"
+	"     - 'number's like printed on SKT52XX board\n"
+	"fkt can\n"
+	"     - loopback plug for X83 required\n"
+	"fkt rs232 number\n"
+	"     - loopback plug(s) for X2 required\n"
+	"fkt backlight on/off\n"
+	"     - switch backlight on or off\n"
+);
+#endif /* CONFIG_STK52XX */
+#endif /* CFG_CMD_BSP */