[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)

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

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