[people/ms/u-boot.git] / common / cmd_nvedit.c

/*
 * (C) Copyright 2000-2002
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Andreas Heppel <aheppel@sysgo.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
 */

/**************************************************************************
 *
 * Support for persistent environment data
 *
 * The "environment" is stored as a list of '\0' terminated
 * "name=value" strings. The end of the list is marked by a double
 * '\0'. New entries are always added at the end. Deleting an entry
 * shifts the remaining entries to the front. Replacing an entry is a
 * combination of deleting the old value and adding the new one.
 *
 * The environment is preceeded by a 32 bit CRC over the data part.
 *
 **************************************************************************
 */

#include <common.h>
#include <command.h>
#include <environment.h>
#include <watchdog.h>
#include <serial.h>
#include <linux/stddef.h>
#include <asm/byteorder.h>
#if defined(CONFIG_CMD_NET)
#include <net.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

#if !defined(CFG_ENV_IS_IN_NVRAM)	&& \
    !defined(CFG_ENV_IS_IN_EEPROM)	&& \
    !defined(CFG_ENV_IS_IN_FLASH)	&& \
    !defined(CFG_ENV_IS_IN_DATAFLASH)	&& \
    !defined(CFG_ENV_IS_IN_NAND)	&& \
    !defined(CFG_ENV_IS_IN_ONENAND)	&& \
    !defined(CFG_ENV_IS_NOWHERE)
# error Define one of CFG_ENV_IS_IN_{NVRAM|EEPROM|FLASH|DATAFLASH|ONENAND|NOWHERE}
#endif

#define XMK_STR(x)	#x
#define MK_STR(x)	XMK_STR(x)

/************************************************************************
************************************************************************/

/* Function that returns a pointer to a value from the environment */
/* (Only memory version supported / needed). */
extern uchar *env_get_addr(int);

/* Function that updates CRC of the enironment */
extern void env_crc_update (void);

/************************************************************************
************************************************************************/

/*
 * Table with supported baudrates (defined in config_xyz.h)
 */
static const unsigned long baudrate_table[] = CFG_BAUDRATE_TABLE;
#define	N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))


/************************************************************************
 * Command interface: print one or all environment variables
 */

int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	int i, j, k, nxt;
	int rcode = 0;

	if (argc == 1) {		/* Print all env variables	*/
		for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
			for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
				;
			for (k=i; k<nxt; ++k)
				putc(env_get_char(k));
			putc  ('\n');

			if (ctrlc()) {
				puts ("\n ** Abort\n");
				return 1;
			}
		}

		printf("\nEnvironment size: %d/%d bytes\n", i, ENV_SIZE);

		return 0;
	}

	for (i=1; i<argc; ++i) {	/* print single env variables	*/
		char *name = argv[i];

		k = -1;

		for (j=0; env_get_char(j) != '\0'; j=nxt+1) {

			for (nxt=j; env_get_char(nxt) != '\0'; ++nxt)
				;
			k = envmatch((uchar *)name, j);
			if (k < 0) {
				continue;
			}
			puts (name);
			putc ('=');
			while (k < nxt)
				putc(env_get_char(k++));
			putc ('\n');
			break;
		}
		if (k < 0) {
			printf ("## Error: \"%s\" not defined\n", name);
			rcode ++;
		}
	}
	return rcode;
}

/************************************************************************
 * Set a new environment variable,
 * or replace or delete an existing one.
 *
 * This function will ONLY work with a in-RAM copy of the environment
 */

int _do_setenv (int flag, int argc, char *argv[])
{
	int   i, len, oldval;
	int   console = -1;
	uchar *env, *nxt = NULL;
	char *name;
	bd_t *bd = gd->bd;

	uchar *env_data = env_get_addr(0);

	if (!env_data)	/* need copy in RAM */
		return 1;

	name = argv[1];

	if (strchr(name, '=')) {
		printf ("## Error: illegal character '=' in variable name \"%s\"\n", name);
		return 1;
	}

	/*
	 * search if variable with this name already exists
	 */
	oldval = -1;
	for (env=env_data; *env; env=nxt+1) {
		for (nxt=env; *nxt; ++nxt)
			;
		if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0)
			break;
	}

	/*
	 * Delete any existing definition
	 */
	if (oldval >= 0) {
#ifndef CONFIG_ENV_OVERWRITE

		/*
		 * Ethernet Address and serial# can be set only once,
		 * ver is readonly.
		 */
#ifdef CONFIG_HAS_UID
		/* Allow serial# forced overwrite with 0xdeaf4add flag */
		if ( ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) ||
#else
		if ( (strcmp (name, "serial#") == 0) ||
#endif
		    ((strcmp (name, "ethaddr") == 0)
#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
		     && (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0)
#endif	/* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
		    ) ) {
			printf ("Can't overwrite \"%s\"\n", name);
			return 1;
		}
#endif

		/* Check for console redirection */
		if (strcmp(name,"stdin") == 0) {
			console = stdin;
		} else if (strcmp(name,"stdout") == 0) {
			console = stdout;
		} else if (strcmp(name,"stderr") == 0) {
			console = stderr;
		}

		if (console != -1) {
			if (argc < 3) {		/* Cannot delete it! */
				printf("Can't delete \"%s\"\n", name);
				return 1;
			}

			/* Try assigning specified device */
			if (console_assign (console, argv[2]) < 0)
				return 1;

#ifdef CONFIG_SERIAL_MULTI
			if (serial_assign (argv[2]) < 0)
				return 1;
#endif
		}

		/*
		 * Switch to new baudrate if new baudrate is supported
		 */
		if (strcmp(argv[1],"baudrate") == 0) {
			int baudrate = simple_strtoul(argv[2], NULL, 10);
			int i;
			for (i=0; i<N_BAUDRATES; ++i) {
				if (baudrate == baudrate_table[i])
					break;
			}
			if (i == N_BAUDRATES) {
				printf ("## Baudrate %d bps not supported\n",
					baudrate);
				return 1;
			}
			printf ("## Switch baudrate to %d bps and press ENTER ...\n",
				baudrate);
			udelay(50000);
			gd->baudrate = baudrate;
#if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2)
			gd->bd->bi_baudrate = baudrate;
#endif

			serial_setbrg ();
			udelay(50000);
			for (;;) {
				if (getc() == '\r')
				      break;
			}
		}

		if (*++nxt == '\0') {
			if (env > env_data) {
				env--;
			} else {
				*env = '\0';
			}
		} else {
			for (;;) {
				*env = *nxt++;
				if ((*env == '\0') && (*nxt == '\0'))
					break;
				++env;
			}
		}
		*++env = '\0';
	}

#ifdef CONFIG_NET_MULTI
	if (strncmp(name, "eth", 3) == 0) {
		char *end;
		int   num = simple_strtoul(name+3, &end, 10);

		if (strcmp(end, "addr") == 0) {
			eth_set_enetaddr(num, argv[2]);
		}
	}
#endif


	/* Delete only ? */
	if ((argc < 3) || argv[2] == NULL) {
		env_crc_update ();
		return 0;
	}

	/*
	 * Append new definition at the end
	 */
	for (env=env_data; *env || *(env+1); ++env)
		;
	if (env > env_data)
		++env;
	/*
	 * Overflow when:
	 * "name" + "=" + "val" +"\0\0"  > ENV_SIZE - (env-env_data)
	 */
	len = strlen(name) + 2;
	/* add '=' for first arg, ' ' for all others */
	for (i=2; i<argc; ++i) {
		len += strlen(argv[i]) + 1;
	}
	if (len > (&env_data[ENV_SIZE]-env)) {
		printf ("## Error: environment overflow, \"%s\" deleted\n", name);
		return 1;
	}
	while ((*env = *name++) != '\0')
		env++;
	for (i=2; i<argc; ++i) {
		char *val = argv[i];

		*env = (i==2) ? '=' : ' ';
		while ((*++env = *val++) != '\0')
			;
	}

	/* end is marked with double '\0' */
	*++env = '\0';

	/* Update CRC */
	env_crc_update ();

	/*
	 * Some variables should be updated when the corresponding
	 * entry in the enviornment is changed
	 */

	if (strcmp(argv[1],"ethaddr") == 0) {
		char *s = argv[2];	/* always use only one arg */
		char *e;
		for (i=0; i<6; ++i) {
			bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
			if (s) s = (*e) ? e+1 : e;
		}
#ifdef CONFIG_NET_MULTI
		eth_set_enetaddr(0, argv[2]);
#endif
		return 0;
	}

	if (strcmp(argv[1],"ipaddr") == 0) {
		char *s = argv[2];	/* always use only one arg */
		char *e;
		unsigned long addr;
		bd->bi_ip_addr = 0;
		for (addr=0, i=0; i<4; ++i) {
			ulong val = s ? simple_strtoul(s, &e, 10) : 0;
			addr <<= 8;
			addr  |= (val & 0xFF);
			if (s) s = (*e) ? e+1 : e;
		}
		bd->bi_ip_addr = htonl(addr);
		return 0;
	}
	if (strcmp(argv[1],"loadaddr") == 0) {
		load_addr = simple_strtoul(argv[2], NULL, 16);
		return 0;
	}
#if defined(CONFIG_CMD_NET)
	if (strcmp(argv[1],"bootfile") == 0) {
		copy_filename (BootFile, argv[2], sizeof(BootFile));
		return 0;
	}
#endif

#ifdef CONFIG_AMIGAONEG3SE
	if (strcmp(argv[1], "vga_fg_color") == 0 ||
	    strcmp(argv[1], "vga_bg_color") == 0 ) {
		extern void video_set_color(unsigned char attr);
		extern unsigned char video_get_attr(void);

		video_set_color(video_get_attr());
		return 0;
	}
#endif	/* CONFIG_AMIGAONEG3SE */

	return 0;
}

void setenv (char *varname, char *varvalue)
{
	char *argv[4] = { "setenv", varname, varvalue, NULL };
	if (varvalue == NULL)
		_do_setenv (0, 2, argv);
	else
		_do_setenv (0, 3, argv);
}

#ifdef CONFIG_HAS_UID
void forceenv (char *varname, char *varvalue)
{
	char *argv[4] = { "forceenv", varname, varvalue, NULL };
	_do_setenv (0xdeaf4add, 3, argv);
}
#endif

int do_setenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	if (argc < 2) {
		printf ("Usage:\n%s\n", cmdtp->usage);
		return 1;
	}

	return _do_setenv (flag, argc, argv);
}

/************************************************************************
 * Prompt for environment variable
 */

#if defined(CONFIG_CMD_ASKENV)
int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	extern char console_buffer[CFG_CBSIZE];
	char message[CFG_CBSIZE];
	int size = CFG_CBSIZE - 1;
	int len;
	char *local_args[4];

	local_args[0] = argv[0];
	local_args[1] = argv[1];
	local_args[2] = NULL;
	local_args[3] = NULL;

	if (argc < 2) {
		printf ("Usage:\n%s\n", cmdtp->usage);
		return 1;
	}
	/* Check the syntax */
	switch (argc) {
	case 1:
		printf ("Usage:\n%s\n", cmdtp->usage);
		return 1;

	case 2:		/* askenv envname */
		sprintf (message, "Please enter '%s':", argv[1]);
		break;

	case 3:		/* askenv envname size */
		sprintf (message, "Please enter '%s':", argv[1]);
		size = simple_strtoul (argv[2], NULL, 10);
		break;

	default:	/* askenv envname message1 ... messagen size */
	    {
		int i;
		int pos = 0;

		for (i = 2; i < argc - 1; i++) {
			if (pos) {
				message[pos++] = ' ';
			}
			strcpy (message+pos, argv[i]);
			pos += strlen(argv[i]);
		}
		message[pos] = '\0';
		size = simple_strtoul (argv[argc - 1], NULL, 10);
	    }
		break;
	}

	if (size >= CFG_CBSIZE)
		size = CFG_CBSIZE - 1;

	if (size <= 0)
		return 1;

	/* prompt for input */
	len = readline (message);

	if (size < len)
		console_buffer[size] = '\0';

	len = 2;
	if (console_buffer[0] != '\0') {
		local_args[2] = console_buffer;
		len = 3;
	}

	/* Continue calling setenv code */
	return _do_setenv (flag, len, local_args);
}
#endif

/************************************************************************
 * Look up variable from environment,
 * return address of storage for that variable,
 * or NULL if not found
 */

char *getenv (char *name)
{
	int i, nxt;

	WATCHDOG_RESET();

	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
		int val;

		for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
			if (nxt >= CFG_ENV_SIZE) {
				return (NULL);
			}
		}
		if ((val=envmatch((uchar *)name, i)) < 0)
			continue;
		return ((char *)env_get_addr(val));
	}

	return (NULL);
}

int getenv_r (char *name, char *buf, unsigned len)
{
	int i, nxt;

	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
		int val, n;

		for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
			if (nxt >= CFG_ENV_SIZE) {
				return (-1);
			}
		}
		if ((val=envmatch((uchar *)name, i)) < 0)
			continue;
		/* found; copy out */
		n = 0;
		while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0')
			;
		if (len == n)
			*buf = '\0';
		return (n);
	}
	return (-1);
}

#if ((defined(CFG_ENV_IS_IN_NVRAM) || defined(CFG_ENV_IS_IN_EEPROM) \
    || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
    || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
    || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))) \
    && !defined(CFG_ENV_IS_NOWHERE))
int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
	extern char * env_name_spec;

	printf ("Saving Environment to %s...\n", env_name_spec);

	return (saveenv() ? 1 : 0);
}

#endif


/************************************************************************
 * Match a name / name=value pair
 *
 * s1 is either a simple 'name', or a 'name=value' pair.
 * i2 is the environment index for a 'name2=value2' pair.
 * If the names match, return the index for the value2, else NULL.
 */

int envmatch (uchar *s1, int i2)
{

	while (*s1 == env_get_char(i2++))
		if (*s1++ == '=')
			return(i2);
	if (*s1 == '\0' && env_get_char(i2-1) == '=')
		return(i2);
	return(-1);
}


/**************************************************/

U_BOOT_CMD(
	printenv, CFG_MAXARGS, 1,	do_printenv,
	"printenv- print environment variables\n",
	"\n    - print values of all environment variables\n"
	"printenv name ...\n"
	"    - print value of environment variable 'name'\n"
);

U_BOOT_CMD(
	setenv, CFG_MAXARGS, 0,	do_setenv,
	"setenv  - set environment variables\n",
	"name value ...\n"
	"    - set environment variable 'name' to 'value ...'\n"
	"setenv name\n"
	"    - delete environment variable 'name'\n"
);

#if ((defined(CFG_ENV_IS_IN_NVRAM) || defined(CFG_ENV_IS_IN_EEPROM) \
    || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
    || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
    || (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))) \
    && !defined(CFG_ENV_IS_NOWHERE))
U_BOOT_CMD(
	saveenv, 1, 0,	do_saveenv,
	"saveenv - save environment variables to persistent storage\n",
	NULL
);

#endif

#if defined(CONFIG_CMD_ASKENV)

U_BOOT_CMD(
	askenv,	CFG_MAXARGS,	1,	do_askenv,
	"askenv  - get environment variables from stdin\n",
	"name [message] [size]\n"
	"    - get environment variable 'name' from stdin (max 'size' chars)\n"
	"askenv name\n"
	"    - get environment variable 'name' from stdin\n"
	"askenv name size\n"
	"    - get environment variable 'name' from stdin (max 'size' chars)\n"
	"askenv name [message] size\n"
	"    - display 'message' string and get environment variable 'name'"
	"from stdin (max 'size' chars)\n"
);
#endif

#if defined(CONFIG_CMD_RUN)
int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
U_BOOT_CMD(
	run,	CFG_MAXARGS,	1,	do_run,
	"run     - run commands in an environment variable\n",
	"var [...]\n"
	"    - run the commands in the environment variable(s) 'var'\n"
);
#endif
Commit	Line	Data
a68d3ed0 WD	1	/*
	2	* (C) Copyright 2000-2002
	3	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	4	*
	5	* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
	6	* Andreas Heppel <aheppel@sysgo.de>
	7
	8	* See file CREDITS for list of people who contributed to this
	9	* project.
	10	*
	11	* This program is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU General Public License as
	13	* published by the Free Software Foundation; either version 2 of
	14	* the License, or (at your option) any later version.
	15	*
	16	* This program is distributed in the hope that it will be useful,
	17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	19	* GNU General Public License for more details.
	20	*
	21	* You should have received a copy of the GNU General Public License
	22	* along with this program; if not, write to the Free Software
	23	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	24	* MA 02111-1307 USA
	25	*/
	26
	27	/**************************************************************************
	28	*
	29	* Support for persistent environment data
	30	*
	31	* The "environment" is stored as a list of '\0' terminated
	32	* "name=value" strings. The end of the list is marked by a double
	33	* '\0'. New entries are always added at the end. Deleting an entry
	34	* shifts the remaining entries to the front. Replacing an entry is a
	35	* combination of deleting the old value and adding the new one.
	36	*
	37	* The environment is preceeded by a 32 bit CRC over the data part.
	38	*
	39	**************************************************************************
	40	*/
	41
	42	#include <common.h>
	43	#include <command.h>
	44	#include <environment.h>
2a3cb020	45	#include <watchdog.h>
281e00a3	46	#include <serial.h>
a68d3ed0 WD	47	#include <linux/stddef.h>
a68d3ed0 WD	48	#include <asm/byteorder.h>
c76fe474	49	#if defined(CONFIG_CMD_NET)
a68d3ed0 WD	50	#include <net.h>
	51	#endif
	52
d87080b7 WD	53	DECLARE_GLOBAL_DATA_PTR;
d87080b7 WD	54
5779d8d9 WD	55	#if !defined(CFG_ENV_IS_IN_NVRAM) && \
	56	!defined(CFG_ENV_IS_IN_EEPROM) && \
	57	!defined(CFG_ENV_IS_IN_FLASH) && \
	58	!defined(CFG_ENV_IS_IN_DATAFLASH) && \
13a5695b	59	!defined(CFG_ENV_IS_IN_NAND) && \
d7e8ce10	60	!defined(CFG_ENV_IS_IN_ONENAND) && \
5779d8d9	61	!defined(CFG_ENV_IS_NOWHERE)
d7e8ce10	62	# error Define one of CFG_ENV_IS_IN_{NVRAM\|EEPROM\|FLASH\|DATAFLASH\|ONENAND\|NOWHERE}
a68d3ed0 WD	63	#endif
	64
	65	#define XMK_STR(x) #x
	66	#define MK_STR(x) XMK_STR(x)
	67
	68	/************************************************************************
	69	************************************************************************/
	70
a68d3ed0 WD	71	/* Function that returns a pointer to a value from the environment */
	72	/* (Only memory version supported / needed). */
	73	extern uchar *env_get_addr(int);
	74
	75	/* Function that updates CRC of the enironment */
	76	extern void env_crc_update (void);
	77
	78	/************************************************************************
	79	************************************************************************/
	80
a68d3ed0 WD	81	/*
	82	* Table with supported baudrates (defined in config_xyz.h)
	83	*/
	84	static const unsigned long baudrate_table[] = CFG_BAUDRATE_TABLE;
	85	#define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
	86
	87
	88	/************************************************************************
	89	* Command interface: print one or all environment variables
	90	*/
	91
	92	int do_printenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	93	{
	94	int i, j, k, nxt;
	95	int rcode = 0;
	96
	97	if (argc == 1) { /* Print all env variables */
	98	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	99	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
	100	;
	101	for (k=i; k<nxt; ++k)
	102	putc(env_get_char(k));
	103	putc ('\n');
	104
	105	if (ctrlc()) {
	106	puts ("\n ** Abort\n");
	107	return 1;
	108	}
	109	}
	110
	111	printf("\nEnvironment size: %d/%d bytes\n", i, ENV_SIZE);
	112
	113	return 0;
	114	}
	115
	116	for (i=1; i<argc; ++i) { /* print single env variables */
	117	char *name = argv[i];
	118
	119	k = -1;
	120
	121	for (j=0; env_get_char(j) != '\0'; j=nxt+1) {
	122
	123	for (nxt=j; env_get_char(nxt) != '\0'; ++nxt)
	124	;
77ddac94	125	k = envmatch((uchar *)name, j);
a68d3ed0 WD	126	if (k < 0) {
	127	continue;
	128	}
	129	puts (name);
	130	putc ('=');
	131	while (k < nxt)
	132	putc(env_get_char(k++));
	133	putc ('\n');
	134	break;
	135	}
	136	if (k < 0) {
	137	printf ("## Error: \"%s\" not defined\n", name);
	138	rcode ++;
	139	}
	140	}
	141	return rcode;
	142	}
	143
	144	/************************************************************************
	145	* Set a new environment variable,
	146	* or replace or delete an existing one.
	147	*
	148	* This function will ONLY work with a in-RAM copy of the environment
	149	*/
	150
	151	int _do_setenv (int flag, int argc, char *argv[])
	152	{
a68d3ed0 WD	153	int i, len, oldval;
	154	int console = -1;
	155	uchar env, nxt = NULL;
77ddac94	156	char *name;
a68d3ed0 WD	157	bd_t *bd = gd->bd;
	158
	159	uchar *env_data = env_get_addr(0);
	160
	161	if (!env_data) /* need copy in RAM */
	162	return 1;
	163
	164	name = argv[1];
	165
471a7be7 WD	166	if (strchr(name, '=')) {
	167	printf ("## Error: illegal character '=' in variable name \"%s\"\n", name);
	168	return 1;
	169	}
	170
a68d3ed0 WD	171	/*
	172	* search if variable with this name already exists
	173	*/
	174	oldval = -1;
	175	for (env=env_data; *env; env=nxt+1) {
	176	for (nxt=env; *nxt; ++nxt)
	177	;
77ddac94	178	if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0)
a68d3ed0 WD	179	break;
	180	}
	181
	182	/*
	183	* Delete any existing definition
	184	*/
	185	if (oldval >= 0) {
	186	#ifndef CONFIG_ENV_OVERWRITE
	187
	188	/*
0587597c SR	189	* Ethernet Address and serial# can be set only once,
0587597c SR	190	* ver is readonly.
a68d3ed0	191	*/
c74b2108 SK	192	#ifdef CONFIG_HAS_UID
	193	/* Allow serial# forced overwrite with 0xdeaf4add flag */
	194	if ( ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) \|\|
	195	#else
a68d3ed0	196	if ( (strcmp (name, "serial#") == 0) \|\|
c74b2108	197	#endif
a68d3ed0 WD	198	((strcmp (name, "ethaddr") == 0)
a68d3ed0 WD	199	#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
77ddac94	200	&& (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0)
a68d3ed0 WD	201	#endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
	202	) ) {
	203	printf ("Can't overwrite \"%s\"\n", name);
	204	return 1;
	205	}
	206	#endif
	207
	208	/* Check for console redirection */
	209	if (strcmp(name,"stdin") == 0) {
	210	console = stdin;
	211	} else if (strcmp(name,"stdout") == 0) {
	212	console = stdout;
	213	} else if (strcmp(name,"stderr") == 0) {
	214	console = stderr;
	215	}
	216
	217	if (console != -1) {
	218	if (argc < 3) { /* Cannot delete it! */
	219	printf("Can't delete \"%s\"\n", name);
	220	return 1;
	221	}
	222
	223	/* Try assigning specified device */
	224	if (console_assign (console, argv[2]) < 0)
	225	return 1;
281e00a3 WD	226
	227	#ifdef CONFIG_SERIAL_MULTI
	228	if (serial_assign (argv[2]) < 0)
	229	return 1;
	230	#endif
a68d3ed0 WD	231	}
	232
	233	/*
	234	* Switch to new baudrate if new baudrate is supported
	235	*/
	236	if (strcmp(argv[1],"baudrate") == 0) {
	237	int baudrate = simple_strtoul(argv[2], NULL, 10);
	238	int i;
	239	for (i=0; i<N_BAUDRATES; ++i) {
	240	if (baudrate == baudrate_table[i])
	241	break;
	242	}
	243	if (i == N_BAUDRATES) {
	244	printf ("## Baudrate %d bps not supported\n",
	245	baudrate);
	246	return 1;
	247	}
	248	printf ("## Switch baudrate to %d bps and press ENTER ...\n",
	249	baudrate);
	250	udelay(50000);
	251	gd->baudrate = baudrate;
c84bad0e	252	#if defined(CONFIG_PPC) \|\| defined(CONFIG_MCF52x2)
d0fb80c3 WD	253	gd->bd->bi_baudrate = baudrate;
	254	#endif
	255
a68d3ed0 WD	256	serial_setbrg ();
	257	udelay(50000);
	258	for (;;) {
	259	if (getc() == '\r')
	260	break;
	261	}
	262	}
	263
	264	if (*++nxt == '\0') {
	265	if (env > env_data) {
	266	env--;
	267	} else {
	268	*env = '\0';
	269	}
	270	} else {
	271	for (;;) {
	272	env = nxt++;
	273	if ((env == '\0') && (nxt == '\0'))
	274	break;
	275	++env;
	276	}
	277	}
	278	*++env = '\0';
	279	}
	280
	281	#ifdef CONFIG_NET_MULTI
	282	if (strncmp(name, "eth", 3) == 0) {
	283	char *end;
	284	int num = simple_strtoul(name+3, &end, 10);
	285
	286	if (strcmp(end, "addr") == 0) {
	287	eth_set_enetaddr(num, argv[2]);
	288	}
	289	}
	290	#endif
	291
	292
	293	/* Delete only ? */
	294	if ((argc < 3) \|\| argv[2] == NULL) {
	295	env_crc_update ();
	296	return 0;
	297	}
	298
	299	/*
	300	* Append new definition at the end
	301	*/
	302	for (env=env_data; env \|\| (env+1); ++env)
	303	;
	304	if (env > env_data)
	305	++env;
	306	/*
	307	* Overflow when:
	308	* "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data)
	309	*/
	310	len = strlen(name) + 2;
	311	/* add '=' for first arg, ' ' for all others */
	312	for (i=2; i<argc; ++i) {
	313	len += strlen(argv[i]) + 1;
	314	}
	315	if (len > (&env_data[ENV_SIZE]-env)) {
	316	printf ("## Error: environment overflow, \"%s\" deleted\n", name);
	317	return 1;
	318	}
	319	while ((env = name++) != '\0')
320	env++;
321	for (i=2; i<argc; ++i) {
322	char *val = argv[i];
323
324	*env = (i==2) ? '=' : ' ';
325	while ((++env = val++) != '\0')
326	;
327	}
328
329	/* end is marked with double '\0' */
330	*++env = '\0';
331
332	/* Update CRC */
333	env_crc_update ();
334
335	/*
336	* Some variables should be updated when the corresponding
337	* entry in the enviornment is changed
338	*/
339
340	if (strcmp(argv[1],"ethaddr") == 0) {
341	char s = argv[2]; / always use only one arg */
342	char *e;
343	for (i=0; i<6; ++i) {
344	bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
345	if (s) s = (*e) ? e+1 : e;
346	}
347	#ifdef CONFIG_NET_MULTI
348	eth_set_enetaddr(0, argv[2]);
349	#endif
350	return 0;
351	}
352
353	if (strcmp(argv[1],"ipaddr") == 0) {
354	char s = argv[2]; / always use only one arg */
355	char *e;
356	unsigned long addr;
357	bd->bi_ip_addr = 0;
358	for (addr=0, i=0; i<4; ++i) {
359	ulong val = s ? simple_strtoul(s, &e, 10) : 0;
360	addr <<= 8;
361	addr \|= (val & 0xFF);
362	if (s) s = (*e) ? e+1 : e;
363	}
364	bd->bi_ip_addr = htonl(addr);
365	return 0;
366	}
367	if (strcmp(argv[1],"loadaddr") == 0) {
368	load_addr = simple_strtoul(argv[2], NULL, 16);
369	return 0;
370	}
c76fe474	371	#if defined(CONFIG_CMD_NET)
a68d3ed0 WD	372	if (strcmp(argv[1],"bootfile") == 0) {
	373	copy_filename (BootFile, argv[2], sizeof(BootFile));
	374	return 0;
	375	}
90253178	376	#endif
c7de829c	377
0587597c	378	#ifdef CONFIG_AMIGAONEG3SE
c7de829c WD	379	if (strcmp(argv[1], "vga_fg_color") == 0 \|\|
	380	strcmp(argv[1], "vga_bg_color") == 0 ) {
	381	extern void video_set_color(unsigned char attr);
	382	extern unsigned char video_get_attr(void);
	383
	384	video_set_color(video_get_attr());
	385	return 0;
	386	}
	387	#endif /* CONFIG_AMIGAONEG3SE */
	388
a68d3ed0 WD	389	return 0;
	390	}
	391
	392	void setenv (char varname, char varvalue)
	393	{
	394	char *argv[4] = { "setenv", varname, varvalue, NULL };
9ffd451a JM	395	if (varvalue == NULL)
	396	_do_setenv (0, 2, argv);
	397	else
	398	_do_setenv (0, 3, argv);
a68d3ed0 WD	399	}
a68d3ed0 WD	400
c74b2108 SK	401	#ifdef CONFIG_HAS_UID
	402	void forceenv (char varname, char varvalue)
	403	{
	404	char *argv[4] = { "forceenv", varname, varvalue, NULL };
	405	_do_setenv (0xdeaf4add, 3, argv);
	406	}
	407	#endif
	408
	409	int do_setenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
a68d3ed0 WD	410	{
	411	if (argc < 2) {
	412	printf ("Usage:\n%s\n", cmdtp->usage);
	413	return 1;
	414	}
	415
	416	return _do_setenv (flag, argc, argv);
	417	}
	418
	419	/************************************************************************
	420	* Prompt for environment variable
	421	*/
	422
c76fe474	423	#if defined(CONFIG_CMD_ASKENV)
a68d3ed0 WD	424	int do_askenv ( cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	425	{
	426	extern char console_buffer[CFG_CBSIZE];
	427	char message[CFG_CBSIZE];
	428	int size = CFG_CBSIZE - 1;
	429	int len;
	430	char *local_args[4];
	431
	432	local_args[0] = argv[0];
	433	local_args[1] = argv[1];
	434	local_args[2] = NULL;
	435	local_args[3] = NULL;
	436
	437	if (argc < 2) {
	438	printf ("Usage:\n%s\n", cmdtp->usage);
	439	return 1;
	440	}
	441	/* Check the syntax */
	442	switch (argc) {
	443	case 1:
	444	printf ("Usage:\n%s\n", cmdtp->usage);
	445	return 1;
	446
	447	case 2: /* askenv envname */
	448	sprintf (message, "Please enter '%s':", argv[1]);
	449	break;
	450
	451	case 3: /* askenv envname size */
	452	sprintf (message, "Please enter '%s':", argv[1]);
	453	size = simple_strtoul (argv[2], NULL, 10);
	454	break;
	455
	456	default: /* askenv envname message1 ... messagen size */
	457	{
	458	int i;
	459	int pos = 0;
	460
	461	for (i = 2; i < argc - 1; i++) {
	462	if (pos) {
	463	message[pos++] = ' ';
	464	}
	465	strcpy (message+pos, argv[i]);
	466	pos += strlen(argv[i]);
	467	}
	468	message[pos] = '\0';
	469	size = simple_strtoul (argv[argc - 1], NULL, 10);
	470	}
	471	break;
	472	}
	473
	474	if (size >= CFG_CBSIZE)
	475	size = CFG_CBSIZE - 1;
	476
	477	if (size <= 0)
	478	return 1;
	479
	480	/* prompt for input */
	481	len = readline (message);
	482
	483	if (size < len)
	484	console_buffer[size] = '\0';
	485
	486	len = 2;
	487	if (console_buffer[0] != '\0') {
488	local_args[2] = console_buffer;
489	len = 3;
490	}
491
492	/* Continue calling setenv code */
493	return _do_setenv (flag, len, local_args);
494	}
90253178	495	#endif
a68d3ed0 WD	496
	497	/************************************************************************
	498	* Look up variable from environment,
	499	* return address of storage for that variable,
	500	* or NULL if not found
	501	*/
	502
77ddac94	503	char getenv (char name)
a68d3ed0 WD	504	{
	505	int i, nxt;
	506
2a3cb020 WD	507	WATCHDOG_RESET();
2a3cb020 WD	508
a68d3ed0 WD	509	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	510	int val;
	511
	512	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
	513	if (nxt >= CFG_ENV_SIZE) {
	514	return (NULL);
	515	}
	516	}
77ddac94	517	if ((val=envmatch((uchar *)name, i)) < 0)
a68d3ed0	518	continue;
77ddac94	519	return ((char *)env_get_addr(val));
a68d3ed0 WD	520	}
	521
	522	return (NULL);
	523	}
	524
77ddac94	525	int getenv_r (char name, char buf, unsigned len)
a68d3ed0 WD	526	{
	527	int i, nxt;
	528
	529	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	530	int val, n;
	531
	532	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
	533	if (nxt >= CFG_ENV_SIZE) {
	534	return (-1);
	535	}
	536	}
77ddac94	537	if ((val=envmatch((uchar *)name, i)) < 0)
a68d3ed0 WD	538	continue;
	539	/* found; copy out */
	540	n = 0;
	541	while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0')
	542	;
	543	if (len == n)
	544	*buf = '\0';
	545	return (n);
	546	}
	547	return (-1);
	548	}
	549
00b48a48	550	#if ((defined(CFG_ENV_IS_IN_NVRAM) \|\| defined(CFG_ENV_IS_IN_EEPROM) \
65c450b4	551	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
d7e8ce10	552	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
00b48a48 JCPV	553	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))) \
00b48a48 JCPV	554	&& !defined(CFG_ENV_IS_NOWHERE))
a68d3ed0 WD	555	int do_saveenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	556	{
	557	extern char * env_name_spec;
	558
	559	printf ("Saving Environment to %s...\n", env_name_spec);
	560
	561	return (saveenv() ? 1 : 0);
	562	}
8bde7f77	563
a68d3ed0 WD	564	#endif
	565
	566
	567	/************************************************************************
	568	* Match a name / name=value pair
	569	*
	570	* s1 is either a simple 'name', or a 'name=value' pair.
	571	* i2 is the environment index for a 'name2=value2' pair.
	572	* If the names match, return the index for the value2, else NULL.
	573	*/
	574
26a41790	575	int envmatch (uchar *s1, int i2)
a68d3ed0 WD	576	{
	577
	578	while (*s1 == env_get_char(i2++))
	579	if (*s1++ == '=')
	580	return(i2);
	581	if (*s1 == '\0' && env_get_char(i2-1) == '=')
	582	return(i2);
	583	return(-1);
	584	}
8bde7f77 WD	585
	586
	587	/**************************************************/
	588
0d498393 WD	589	U_BOOT_CMD(
0d498393 WD	590	printenv, CFG_MAXARGS, 1, do_printenv,
8bde7f77 WD	591	"printenv- print environment variables\n",
	592	"\n - print values of all environment variables\n"
	593	"printenv name ...\n"
	594	" - print value of environment variable 'name'\n"
	595	);
	596
0d498393 WD	597	U_BOOT_CMD(
0d498393 WD	598	setenv, CFG_MAXARGS, 0, do_setenv,
8bde7f77 WD	599	"setenv - set environment variables\n",
	600	"name value ...\n"
	601	" - set environment variable 'name' to 'value ...'\n"
	602	"setenv name\n"
	603	" - delete environment variable 'name'\n"
	604	);
	605
00b48a48	606	#if ((defined(CFG_ENV_IS_IN_NVRAM) \|\| defined(CFG_ENV_IS_IN_EEPROM) \
65c450b4	607	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
d7e8ce10	608	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
00b48a48 JCPV	609	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))) \
00b48a48 JCPV	610	&& !defined(CFG_ENV_IS_NOWHERE))
0d498393 WD	611	U_BOOT_CMD(
0d498393 WD	612	saveenv, 1, 0, do_saveenv,
8bde7f77 WD	613	"saveenv - save environment variables to persistent storage\n",
	614	NULL
	615	);
	616
90253178	617	#endif
8bde7f77	618
c76fe474	619	#if defined(CONFIG_CMD_ASKENV)
8bde7f77	620
0d498393 WD	621	U_BOOT_CMD(
0d498393 WD	622	askenv, CFG_MAXARGS, 1, do_askenv,
8bde7f77 WD	623	"askenv - get environment variables from stdin\n",
	624	"name [message] [size]\n"
	625	" - get environment variable 'name' from stdin (max 'size' chars)\n"
	626	"askenv name\n"
	627	" - get environment variable 'name' from stdin\n"
	628	"askenv name size\n"
	629	" - get environment variable 'name' from stdin (max 'size' chars)\n"
	630	"askenv name [message] size\n"
	631	" - display 'message' string and get environment variable 'name'"
	632	"from stdin (max 'size' chars)\n"
	633	);
90253178	634	#endif
8bde7f77	635
c76fe474	636	#if defined(CONFIG_CMD_RUN)
8bde7f77	637	int do_run (cmd_tbl_t cmdtp, int flag, int argc, char argv[]);
0d498393 WD	638	U_BOOT_CMD(
0d498393 WD	639	run, CFG_MAXARGS, 1, do_run,
8bde7f77 WD	640	"run - run commands in an environment variable\n",
	641	"var [...]\n"
	642	" - run the commands in the environment variable(s) 'var'\n"
	643	);
90253178	644	#endif