[people/ms/u-boot.git] / board / zeus / zeus.c

/*
 * (C) Copyright 2007
 * Stefan Roese, DENX Software Engineering, sr@denx.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
 */

#include <common.h>
#include <command.h>
#include <malloc.h>
#include <environment.h>
#include <logbuff.h>
#include <post.h>

#include <asm/processor.h>
#include <asm/io.h>
#include <asm/ppc4xx-gpio.h>

DECLARE_GLOBAL_DATA_PTR;

#define REBOOT_MAGIC	0x07081967
#define REBOOT_NOP	0x00000000
#define REBOOT_DO_POST	0x00000001

extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
extern env_t *env_ptr;
extern uchar default_environment[];

ulong flash_get_size(ulong base, int banknum);
void env_crc_update(void);

static u32 start_time;

int board_early_init_f(void)
{
	mtdcr(UIC0SR, 0xFFFFFFFF);	/* clear all ints */
	mtdcr(UIC0ER, 0x00000000);	/* disable all ints */
	mtdcr(UIC0CR, 0x00000000);
	mtdcr(UIC0PR, 0xFFFF7F00);	/* set int polarities */
	mtdcr(UIC0TR, 0x00000000);	/* set int trigger levels */
	mtdcr(UIC0SR, 0xFFFFFFFF);	/* clear all ints */
	mtdcr(UIC0VCR, 0x00000001);	/* set vect base=0,INT0 highest priority */

	/*
	 * Configure CPC0_PCI to enable PerWE as output
	 */
	mtdcr(CPC0_PCI, CPC0_PCI_SPE);

	return 0;
}

int misc_init_r(void)
{
	u32 pbcr;
	int size_val = 0;
	u32 post_magic;
	u32 post_val;

	post_magic = in_be32((void *)CONFIG_SYS_POST_MAGIC);
	post_val = in_be32((void *)CONFIG_SYS_POST_VAL);
	if ((post_magic == REBOOT_MAGIC) && (post_val == REBOOT_DO_POST)) {
		/*
		 * Set special bootline bootparameter to pass this POST boot
		 * mode to Linux to reset the username/password
		 */
		setenv("addmisc", "setenv bootargs \\${bootargs} factory_reset=yes");

		/*
		 * Normally don't run POST tests, only when enabled
		 * via the sw-reset button. So disable further tests
		 * upon next bootup here.
		 */
		out_be32((void *)CONFIG_SYS_POST_VAL, REBOOT_NOP);
	} else {
		/*
		 * Only run POST when initiated via the sw-reset button mechanism
		 */
		post_word_store(0);
	}

	/*
	 * Get current time
	 */
	start_time = get_timer(0);

	/*
	 * FLASH stuff...
	 */

	/* Re-do sizing to get full correct info */

	/* adjust flash start and offset */
	mfebc(PB0CR, pbcr);
	switch (gd->bd->bi_flashsize) {
	case 1 << 20:
		size_val = 0;
		break;
	case 2 << 20:
		size_val = 1;
		break;
	case 4 << 20:
		size_val = 2;
		break;
	case 8 << 20:
		size_val = 3;
		break;
	case 16 << 20:
		size_val = 4;
		break;
	case 32 << 20:
		size_val = 5;
		break;
	case 64 << 20:
		size_val = 6;
		break;
	case 128 << 20:
		size_val = 7;
		break;
	}
	pbcr = (pbcr & 0x0001ffff) | gd->bd->bi_flashstart | (size_val << 17);
	mtebc(PB0CR, pbcr);

	/*
	 * Re-check to get correct base address
	 */
	flash_get_size(gd->bd->bi_flashstart, 0);

	/* Monitor protection ON by default */
	(void)flash_protect(FLAG_PROTECT_SET,
			    -CONFIG_SYS_MONITOR_LEN,
			    0xffffffff,
			    &flash_info[0]);

	/* Env protection ON by default */
	(void)flash_protect(FLAG_PROTECT_SET,
			    CONFIG_ENV_ADDR_REDUND,
			    CONFIG_ENV_ADDR_REDUND + 2*CONFIG_ENV_SECT_SIZE - 1,
			    &flash_info[0]);

	return 0;
}

/*
 * Check Board Identity:
 */
int checkboard(void)
{
	char buf[64];
	int i = getenv_f("serial#", buf, sizeof(buf));

	puts("Board: Zeus-");

	if (in_be32((void *)GPIO0_IR) & GPIO_VAL(CONFIG_SYS_GPIO_ZEUS_PE))
		puts("PE");
	else
		puts("CE");

	puts(" of BulletEndPoint");

	if (i > 0) {
		puts(", serial# ");
		puts(buf);
	}
	putc('\n');

	/* both LED's off */
	gpio_write_bit(CONFIG_SYS_GPIO_LED_RED, 0);
	gpio_write_bit(CONFIG_SYS_GPIO_LED_GREEN, 0);
	udelay(10000);
	/* and on again */
	gpio_write_bit(CONFIG_SYS_GPIO_LED_RED, 1);
	gpio_write_bit(CONFIG_SYS_GPIO_LED_GREEN, 1);

	return (0);
}

static int default_env_var(char *buf, char *var)
{
	char *ptr;
	char *val;

	/*
	 * Find env variable
	 */
	ptr = strstr(buf + 4, var);
	if (ptr == NULL) {
		printf("ERROR: %s not found!\n", var);
		return -1;
	}
	ptr += strlen(var) + 1;

	/*
	 * Now the ethaddr needs to be updated in the "normal"
	 * environment storage -> redundant flash.
	 */
	val = ptr;
	setenv(var, val);
	printf("Updated %s from eeprom to %s!\n", var, val);

	return 0;
}

static int restore_default(void)
{
	char *buf;
	char *buf_save;
	u32 crc;

	set_default_env("");

	gd->env_valid = 1;

	/*
	 * Read board specific values from I2C EEPROM
	 * and set env variables accordingly
	 * -> ethaddr, eth1addr, serial#
	 */
	buf = buf_save = malloc(FACTORY_RESET_ENV_SIZE);
	if (buf == NULL) {
		printf("ERROR: malloc() failed\n");
		return -1;
	}
	if (eeprom_read(FACTORY_RESET_I2C_EEPROM, FACTORY_RESET_ENV_OFFS,
			(u8 *)buf, FACTORY_RESET_ENV_SIZE)) {
		puts("\nError reading EEPROM!\n");
	} else {
		crc = crc32(0, (u8 *)(buf + 4), FACTORY_RESET_ENV_SIZE - 4);
		if (crc != *(u32 *)buf) {
			printf("ERROR: crc mismatch %08x %08x\n", crc, *(u32 *)buf);
			return -1;
		}

		default_env_var(buf, "ethaddr");
		buf += 8 + 18;
		default_env_var(buf, "eth1addr");
		buf += 9 + 18;
		default_env_var(buf, "serial#");
	}

	/*
	 * Finally save updated env variables back to flash
	 */
	saveenv();

	free(buf_save);

	return 0;
}

int do_set_default(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	char *buf;
	char *buf_save;
	char str[32];
	u32 crc;
	char var[32];

	if (argc < 4) {
		puts("ERROR!\n");
		return -1;
	}

	buf = buf_save = malloc(FACTORY_RESET_ENV_SIZE);
	memset(buf, 0, FACTORY_RESET_ENV_SIZE);

	strcpy(var, "ethaddr");
	printf("Setting %s to %s\n", var, argv[1]);
	sprintf(str, "%s=%s", var, argv[1]);
	strcpy(buf + 4, str);
	buf += strlen(str) + 1;

	strcpy(var, "eth1addr");
	printf("Setting %s to %s\n", var, argv[2]);
	sprintf(str, "%s=%s", var, argv[2]);
	strcpy(buf + 4, str);
	buf += strlen(str) + 1;

	strcpy(var, "serial#");
	printf("Setting %s to %s\n", var, argv[3]);
	sprintf(str, "%s=%s", var, argv[3]);
	strcpy(buf + 4, str);

	crc = crc32(0, (u8 *)(buf_save + 4), FACTORY_RESET_ENV_SIZE - 4);
	*(u32 *)buf_save = crc;

	if (eeprom_write(FACTORY_RESET_I2C_EEPROM, FACTORY_RESET_ENV_OFFS,
			 (u8 *)buf_save, FACTORY_RESET_ENV_SIZE)) {
		puts("\nError writing EEPROM!\n");
		return -1;
	}

	free(buf_save);

	return 0;
}

U_BOOT_CMD(
	setdef,	4,	1,	do_set_default,
	"write board-specific values to EEPROM (ethaddr...)",
	"ethaddr eth1addr serial#\n    - write board-specific values to EEPROM"
	);

static inline int sw_reset_pressed(void)
{
	return !(in_be32((void *)GPIO0_IR) & GPIO_VAL(CONFIG_SYS_GPIO_SW_RESET));
}

int do_chkreset(cmd_tbl_t* cmdtp, int flag, int argc, char * const argv[])
{
	int delta;
	int count = 0;
	int post = 0;
	int factory_reset = 0;

	if (!sw_reset_pressed()) {
		printf("SW-Reset already high (Button released)\n");
		printf("-> No action taken!\n");
		return 0;
	}

	printf("Waiting for SW-Reset button to be released.");

	while (1) {
		delta = get_timer(start_time);
		if (!sw_reset_pressed())
			break;

		if ((delta > CONFIG_SYS_TIME_POST) && !post) {
			printf("\nWhen released now, POST tests will be started.");
			gpio_write_bit(CONFIG_SYS_GPIO_LED_GREEN, 0);
			post = 1;
		}

		if ((delta > CONFIG_SYS_TIME_FACTORY_RESET) && !factory_reset) {
			printf("\nWhen released now, factory default values"
			       " will be restored.");
			gpio_write_bit(CONFIG_SYS_GPIO_LED_RED, 0);
			factory_reset = 1;
		}

		udelay(1000);
		if (!(count++ % 1000))
			printf(".");
	}


	printf("\nSW-Reset Button released after %d milli-seconds!\n", delta);

	if (delta > CONFIG_SYS_TIME_FACTORY_RESET) {
		printf("Starting factory reset value restoration...\n");

		/*
		 * Restore default setting
		 */
		restore_default();

		/*
		 * Reset the board for default to become valid
		 */
		do_reset(NULL, 0, 0, NULL);

		return 0;
	}

	if (delta > CONFIG_SYS_TIME_POST) {
		printf("Starting POST configuration...\n");

		/*
		 * Enable POST upon next bootup
		 */
		out_be32((void *)CONFIG_SYS_POST_MAGIC, REBOOT_MAGIC);
		out_be32((void *)CONFIG_SYS_POST_VAL, REBOOT_DO_POST);
		post_bootmode_init();

		/*
		 * Reset the logbuffer for a clean start
		 */
		logbuff_reset();

		do_reset(NULL, 0, 0, NULL);

		return 0;
	}

	return 0;
}

U_BOOT_CMD (
	chkreset, 1, 1, do_chkreset,
	"Check for status of SW-reset button and act accordingly",
	""
);

#if defined(CONFIG_POST)
/*
 * Returns 1 if keys pressed to start the power-on long-running tests
 * Called from board_init_f().
 */
int post_hotkeys_pressed(void)
{
	u32 post_magic;
	u32 post_val;

	post_magic = in_be32((void *)CONFIG_SYS_POST_MAGIC);
	post_val = in_be32((void *)CONFIG_SYS_POST_VAL);

	if ((post_magic == REBOOT_MAGIC) && (post_val == REBOOT_DO_POST))
		return 1;
	else
		return 0;
}
#endif /* CONFIG_POST */
Commit	Line	Data
779e9751 SR	1	/*
	2	* (C) Copyright 2007
	3	* Stefan Roese, DENX Software Engineering, sr@denx.de.
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	#include <common.h>
	25	#include <command.h>
	26	#include <malloc.h>
	27	#include <environment.h>
	28	#include <logbuff.h>
	29	#include <post.h>
	30
	31	#include <asm/processor.h>
	32	#include <asm/io.h>
09887762	33	#include <asm/ppc4xx-gpio.h>
779e9751 SR	34
	35	DECLARE_GLOBAL_DATA_PTR;
	36
	37	#define REBOOT_MAGIC 0x07081967
	38	#define REBOOT_NOP 0x00000000
	39	#define REBOOT_DO_POST 0x00000001
	40
6d0f6bcf	41	extern flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
779e9751 SR	42	extern env_t *env_ptr;
	43	extern uchar default_environment[];
	44
	45	ulong flash_get_size(ulong base, int banknum);
	46	void env_crc_update(void);
779e9751 SR	47
	48	static u32 start_time;
	49
	50	int board_early_init_f(void)
	51	{
952e7760 SR	52	mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
	53	mtdcr(UIC0ER, 0x00000000); /* disable all ints */
	54	mtdcr(UIC0CR, 0x00000000);
	55	mtdcr(UIC0PR, 0xFFFF7F00); /* set int polarities */
	56	mtdcr(UIC0TR, 0x00000000); /* set int trigger levels */
	57	mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
	58	mtdcr(UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority */
779e9751 SR	59
	60	/*
	61	* Configure CPC0_PCI to enable PerWE as output
	62	*/
d1c3b275	63	mtdcr(CPC0_PCI, CPC0_PCI_SPE);
779e9751 SR	64
	65	return 0;
	66	}
	67
	68	int misc_init_r(void)
	69	{
	70	u32 pbcr;
	71	int size_val = 0;
	72	u32 post_magic;
	73	u32 post_val;
	74
6d0f6bcf JCPV	75	post_magic = in_be32((void *)CONFIG_SYS_POST_MAGIC);
6d0f6bcf JCPV	76	post_val = in_be32((void *)CONFIG_SYS_POST_VAL);
779e9751 SR	77	if ((post_magic == REBOOT_MAGIC) && (post_val == REBOOT_DO_POST)) {
	78	/*
	79	* Set special bootline bootparameter to pass this POST boot
	80	* mode to Linux to reset the username/password
	81	*/
	82	setenv("addmisc", "setenv bootargs \\${bootargs} factory_reset=yes");
	83
	84	/*
	85	* Normally don't run POST tests, only when enabled
	86	* via the sw-reset button. So disable further tests
	87	* upon next bootup here.
	88	*/
6d0f6bcf	89	out_be32((void *)CONFIG_SYS_POST_VAL, REBOOT_NOP);
779e9751 SR	90	} else {
	91	/*
	92	* Only run POST when initiated via the sw-reset button mechanism
	93	*/
	94	post_word_store(0);
	95	}
	96
	97	/*
	98	* Get current time
	99	*/
	100	start_time = get_timer(0);
	101
	102	/*
	103	* FLASH stuff...
	104	*/
	105
	106	/* Re-do sizing to get full correct info */
	107
	108	/* adjust flash start and offset */
d1c3b275	109	mfebc(PB0CR, pbcr);
779e9751 SR	110	switch (gd->bd->bi_flashsize) {
	111	case 1 << 20:
	112	size_val = 0;
	113	break;
	114	case 2 << 20:
	115	size_val = 1;
	116	break;
	117	case 4 << 20:
	118	size_val = 2;
	119	break;
	120	case 8 << 20:
	121	size_val = 3;
	122	break;
	123	case 16 << 20:
	124	size_val = 4;
	125	break;
	126	case 32 << 20:
	127	size_val = 5;
	128	break;
	129	case 64 << 20:
	130	size_val = 6;
	131	break;
	132	case 128 << 20:
	133	size_val = 7;
	134	break;
	135	}
	136	pbcr = (pbcr & 0x0001ffff) \| gd->bd->bi_flashstart \| (size_val << 17);
d1c3b275	137	mtebc(PB0CR, pbcr);
779e9751 SR	138
	139	/*
	140	* Re-check to get correct base address
	141	*/
	142	flash_get_size(gd->bd->bi_flashstart, 0);
	143
	144	/* Monitor protection ON by default */
	145	(void)flash_protect(FLAG_PROTECT_SET,
6d0f6bcf	146	-CONFIG_SYS_MONITOR_LEN,
779e9751 SR	147	0xffffffff,
	148	&flash_info[0]);
	149
	150	/* Env protection ON by default */
	151	(void)flash_protect(FLAG_PROTECT_SET,
0e8d1586 JCPV	152	CONFIG_ENV_ADDR_REDUND,
0e8d1586 JCPV	153	CONFIG_ENV_ADDR_REDUND + 2*CONFIG_ENV_SECT_SIZE - 1,
779e9751 SR	154	&flash_info[0]);
	155
	156	return 0;
	157	}
	158
	159	/*
	160	* Check Board Identity:
	161	*/
	162	int checkboard(void)
	163	{
f0c0b3a9 WD	164	char buf[64];
f0c0b3a9 WD	165	int i = getenv_f("serial#", buf, sizeof(buf));
779e9751 SR	166
	167	puts("Board: Zeus-");
	168
6d0f6bcf	169	if (in_be32((void *)GPIO0_IR) & GPIO_VAL(CONFIG_SYS_GPIO_ZEUS_PE))
779e9751 SR	170	puts("PE");
	171	else
	172	puts("CE");
	173
	174	puts(" of BulletEndPoint");
	175
f0c0b3a9	176	if (i > 0) {
779e9751	177	puts(", serial# ");
f0c0b3a9	178	puts(buf);
779e9751 SR	179	}
	180	putc('\n');
	181
	182	/* both LED's off */
6d0f6bcf JCPV	183	gpio_write_bit(CONFIG_SYS_GPIO_LED_RED, 0);
6d0f6bcf JCPV	184	gpio_write_bit(CONFIG_SYS_GPIO_LED_GREEN, 0);
779e9751 SR	185	udelay(10000);
779e9751 SR	186	/* and on again */
6d0f6bcf JCPV	187	gpio_write_bit(CONFIG_SYS_GPIO_LED_RED, 1);
6d0f6bcf JCPV	188	gpio_write_bit(CONFIG_SYS_GPIO_LED_GREEN, 1);
779e9751 SR	189
	190	return (0);
	191	}
	192
779e9751 SR	193	static int default_env_var(char buf, char var)
	194	{
	195	char *ptr;
	196	char *val;
	197
	198	/*
	199	* Find env variable
	200	*/
	201	ptr = strstr(buf + 4, var);
	202	if (ptr == NULL) {
	203	printf("ERROR: %s not found!\n", var);
	204	return -1;
	205	}
	206	ptr += strlen(var) + 1;
	207
	208	/*
	209	* Now the ethaddr needs to be updated in the "normal"
	210	* environment storage -> redundant flash.
	211	*/
	212	val = ptr;
	213	setenv(var, val);
	214	printf("Updated %s from eeprom to %s!\n", var, val);
	215
	216	return 0;
	217	}
	218
	219	static int restore_default(void)
	220	{
	221	char *buf;
	222	char *buf_save;
	223	u32 crc;
	224
ea882baf	225	set_default_env("");
779e9751	226
779e9751 SR	227	gd->env_valid = 1;
	228
	229	/*
	230	* Read board specific values from I2C EEPROM
	231	* and set env variables accordingly
	232	* -> ethaddr, eth1addr, serial#
	233	*/
	234	buf = buf_save = malloc(FACTORY_RESET_ENV_SIZE);
ea882baf WD	235	if (buf == NULL) {
	236	printf("ERROR: malloc() failed\n");
	237	return -1;
	238	}
779e9751 SR	239	if (eeprom_read(FACTORY_RESET_I2C_EEPROM, FACTORY_RESET_ENV_OFFS,
	240	(u8 *)buf, FACTORY_RESET_ENV_SIZE)) {
	241	puts("\nError reading EEPROM!\n");
	242	} else {
	243	crc = crc32(0, (u8 *)(buf + 4), FACTORY_RESET_ENV_SIZE - 4);
	244	if (crc != (u32 )buf) {
b002144e	245	printf("ERROR: crc mismatch %08x %08x\n", crc, (u32 )buf);
779e9751 SR	246	return -1;
	247	}
	248
	249	default_env_var(buf, "ethaddr");
	250	buf += 8 + 18;
	251	default_env_var(buf, "eth1addr");
	252	buf += 9 + 18;
	253	default_env_var(buf, "serial#");
	254	}
	255
	256	/*
	257	* Finally save updated env variables back to flash
	258	*/
	259	saveenv();
	260
	261	free(buf_save);
	262
	263	return 0;
	264	}
	265
54841ab5	266	int do_set_default(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
779e9751 SR	267	{
	268	char *buf;
	269	char *buf_save;
	270	char str[32];
	271	u32 crc;
	272	char var[32];
	273
	274	if (argc < 4) {
	275	puts("ERROR!\n");
	276	return -1;
	277	}
	278
	279	buf = buf_save = malloc(FACTORY_RESET_ENV_SIZE);
	280	memset(buf, 0, FACTORY_RESET_ENV_SIZE);
	281
	282	strcpy(var, "ethaddr");
	283	printf("Setting %s to %s\n", var, argv[1]);
	284	sprintf(str, "%s=%s", var, argv[1]);
	285	strcpy(buf + 4, str);
	286	buf += strlen(str) + 1;
	287
	288	strcpy(var, "eth1addr");
	289	printf("Setting %s to %s\n", var, argv[2]);
	290	sprintf(str, "%s=%s", var, argv[2]);
	291	strcpy(buf + 4, str);
	292	buf += strlen(str) + 1;
	293
	294	strcpy(var, "serial#");
	295	printf("Setting %s to %s\n", var, argv[3]);
	296	sprintf(str, "%s=%s", var, argv[3]);
	297	strcpy(buf + 4, str);
	298
	299	crc = crc32(0, (u8 *)(buf_save + 4), FACTORY_RESET_ENV_SIZE - 4);
	300	(u32 )buf_save = crc;
	301
	302	if (eeprom_write(FACTORY_RESET_I2C_EEPROM, FACTORY_RESET_ENV_OFFS,
	303	(u8 *)buf_save, FACTORY_RESET_ENV_SIZE)) {
	304	puts("\nError writing EEPROM!\n");
	305	return -1;
	306	}
	307
	308	free(buf_save);
	309
	310	return 0;
	311	}
	312
	313	U_BOOT_CMD(
	314	setdef, 4, 1, do_set_default,
2fb2604d	315	"write board-specific values to EEPROM (ethaddr...)",
a89c33db	316	"ethaddr eth1addr serial#\n - write board-specific values to EEPROM"
779e9751 SR	317	);
	318
	319	static inline int sw_reset_pressed(void)
	320	{
6d0f6bcf	321	return !(in_be32((void *)GPIO0_IR) & GPIO_VAL(CONFIG_SYS_GPIO_SW_RESET));
779e9751 SR	322	}
779e9751 SR	323
54841ab5	324	int do_chkreset(cmd_tbl_t* cmdtp, int flag, int argc, char * const argv[])
779e9751 SR	325	{
	326	int delta;
	327	int count = 0;
	328	int post = 0;
	329	int factory_reset = 0;
	330
	331	if (!sw_reset_pressed()) {
	332	printf("SW-Reset already high (Button released)\n");
	333	printf("-> No action taken!\n");
	334	return 0;
	335	}
	336
	337	printf("Waiting for SW-Reset button to be released.");
	338
	339	while (1) {
	340	delta = get_timer(start_time);
	341	if (!sw_reset_pressed())
	342	break;
	343
6d0f6bcf	344	if ((delta > CONFIG_SYS_TIME_POST) && !post) {
779e9751	345	printf("\nWhen released now, POST tests will be started.");
6d0f6bcf	346	gpio_write_bit(CONFIG_SYS_GPIO_LED_GREEN, 0);
779e9751 SR	347	post = 1;
	348	}
	349
6d0f6bcf	350	if ((delta > CONFIG_SYS_TIME_FACTORY_RESET) && !factory_reset) {
779e9751 SR	351	printf("\nWhen released now, factory default values"
779e9751 SR	352	" will be restored.");
6d0f6bcf	353	gpio_write_bit(CONFIG_SYS_GPIO_LED_RED, 0);
779e9751 SR	354	factory_reset = 1;
	355	}
	356
	357	udelay(1000);
	358	if (!(count++ % 1000))
	359	printf(".");
	360	}
	361
	362
	363	printf("\nSW-Reset Button released after %d milli-seconds!\n", delta);
	364
6d0f6bcf	365	if (delta > CONFIG_SYS_TIME_FACTORY_RESET) {
779e9751 SR	366	printf("Starting factory reset value restoration...\n");
	367
	368	/*
	369	* Restore default setting
	370	*/
	371	restore_default();
	372
	373	/*
	374	* Reset the board for default to become valid
	375	*/
	376	do_reset(NULL, 0, 0, NULL);
	377
	378	return 0;
	379	}
	380
6d0f6bcf	381	if (delta > CONFIG_SYS_TIME_POST) {
779e9751 SR	382	printf("Starting POST configuration...\n");
	383
	384	/*
	385	* Enable POST upon next bootup
	386	*/
6d0f6bcf JCPV	387	out_be32((void *)CONFIG_SYS_POST_MAGIC, REBOOT_MAGIC);
6d0f6bcf JCPV	388	out_be32((void *)CONFIG_SYS_POST_VAL, REBOOT_DO_POST);
779e9751 SR	389	post_bootmode_init();
	390
	391	/*
	392	* Reset the logbuffer for a clean start
	393	*/
	394	logbuff_reset();
	395
	396	do_reset(NULL, 0, 0, NULL);
	397
	398	return 0;
	399	}
	400
	401	return 0;
	402	}
	403
	404	U_BOOT_CMD (
	405	chkreset, 1, 1, do_chkreset,
2fb2604d	406	"Check for status of SW-reset button and act accordingly",
a89c33db	407	""
779e9751 SR	408	);
	409
	410	#if defined(CONFIG_POST)
	411	/*
	412	* Returns 1 if keys pressed to start the power-on long-running tests
	413	* Called from board_init_f().
	414	*/
	415	int post_hotkeys_pressed(void)
	416	{
	417	u32 post_magic;
	418	u32 post_val;
	419
6d0f6bcf JCPV	420	post_magic = in_be32((void *)CONFIG_SYS_POST_MAGIC);
6d0f6bcf JCPV	421	post_val = in_be32((void *)CONFIG_SYS_POST_VAL);
779e9751 SR	422
	423	if ((post_magic == REBOOT_MAGIC) && (post_val == REBOOT_DO_POST))
	424	return 1;
	425	else
	426	return 0;
	427	}
	428	#endif /* CONFIG_POST */