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

/*
 * (C) Copyright 2000-2002
 * Wolfgang Denk, DENX Software Engineering, [email protected].
 *
 * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
 * Andreas Heppel <[email protected]>

 * 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(CONFIG_ENV_IS_IN_EEPROM)	&& \
    !defined(CONFIG_ENV_IS_IN_FLASH)	&& \
    !defined(CONFIG_ENV_IS_IN_DATAFLASH)	&& \
    !defined(CONFIG_ENV_IS_IN_MG_DISK)	&& \
    !defined(CONFIG_ENV_IS_IN_NAND)	&& \
    !defined(CONFIG_ENV_IS_IN_NVRAM)	&& \
    !defined(CONFIG_ENV_IS_IN_ONENAND)	&& \
    !defined(CONFIG_ENV_IS_IN_SPI_FLASH)	&& \
    !defined(CONFIG_ENV_IS_NOWHERE)
# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\
SPI_FLASH|MG_DISK|NVRAM|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[] = CONFIG_SYS_BAUDRATE_TABLE;
#define	N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))

static int env_id = 1;

int get_env_id (void)
{
	return env_id;
}
/************************************************************************
 * 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/%ld bytes\n",
			i, (ulong)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;
	}

	env_id++;
	/*
	 * 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.
		 */
		if (
#ifdef CONFIG_HAS_UID
		/* Allow serial# forced overwrite with 0xdeaf4add flag */
		    ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) ||
#else
		    (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;
			}

#ifdef CONFIG_CONSOLE_MUX
			i = iomux_doenv(console, argv[2]);
			if (i)
				return i;
#else
			/* 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
#endif /* CONFIG_CONSOLE_MUX */
		}

		/*
		 * 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';
	}

	/* 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)
		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;
}

int setenv (char *varname, char *varvalue)
{
	char *argv[4] = { "setenv", varname, varvalue, NULL };
	if (varvalue == NULL)
		return _do_setenv (0, 2, argv);
	else
		return _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) {
		cmd_usage(cmdtp);
		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[CONFIG_SYS_CBSIZE];
	char message[CONFIG_SYS_CBSIZE];
	int size = CONFIG_SYS_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) {
		cmd_usage(cmdtp);
		return 1;
	}
	/* Check the syntax */
	switch (argc) {
	case 1:
		cmd_usage(cmdtp);
		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 >= CONFIG_SYS_CBSIZE)
		size = CONFIG_SYS_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 >= CONFIG_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 >= CONFIG_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(CONFIG_CMD_SAVEENV) && !defined(CONFIG_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);
}

U_BOOT_CMD(
	saveenv, 1, 0,	do_saveenv,
	"save environment variables to persistent storage",
	NULL
);

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

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

#if defined(CONFIG_CMD_ASKENV)

U_BOOT_CMD(
	askenv,	CONFIG_SYS_MAXARGS,	1,	do_askenv,
	"get environment variables from stdin",
	"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,	CONFIG_SYS_MAXARGS,	1,	do_run,
	"run commands in an environment variable",
	"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, [email protected].
	4	*
	5	* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
	6	* Andreas Heppel <[email protected]>
	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
75eb82ec	55	#if !defined(CONFIG_ENV_IS_IN_EEPROM) && \
5a1aceb0	56	!defined(CONFIG_ENV_IS_IN_FLASH) && \
057c849c	57	!defined(CONFIG_ENV_IS_IN_DATAFLASH) && \
75eb82ec	58	!defined(CONFIG_ENV_IS_IN_MG_DISK) && \
51bfee19	59	!defined(CONFIG_ENV_IS_IN_NAND) && \
75eb82ec	60	!defined(CONFIG_ENV_IS_IN_NVRAM) && \
9656138f	61	!defined(CONFIG_ENV_IS_IN_ONENAND) && \
0b5099a8	62	!defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \
93f6d725	63	!defined(CONFIG_ENV_IS_NOWHERE)
75eb82ec K	64	# error Define one of CONFIG_ENV_IS_IN_{EEPROM\|FLASH\|DATAFLASH\|ONENAND\|\
75eb82ec K	65	SPI_FLASH\|MG_DISK\|NVRAM\|NOWHERE}
a68d3ed0 WD	66	#endif
	67
	68	#define XMK_STR(x) #x
	69	#define MK_STR(x) XMK_STR(x)
	70
	71	/************************************************************************
	72	************************************************************************/
	73
a68d3ed0 WD	74	/*
	75	* Table with supported baudrates (defined in config_xyz.h)
	76	*/
6d0f6bcf	77	static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE;
a68d3ed0 WD	78	#define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
a68d3ed0 WD	79
2f70c49e	80	static int env_id = 1;
a68d3ed0	81
2f70c49e HS	82	int get_env_id (void)
	83	{
	84	return env_id;
	85	}
a68d3ed0 WD	86	/************************************************************************
	87	* Command interface: print one or all environment variables
	88	*/
	89
	90	int do_printenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	91	{
	92	int i, j, k, nxt;
	93	int rcode = 0;
	94
	95	if (argc == 1) { /* Print all env variables */
	96	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	97	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
	98	;
	99	for (k=i; k<nxt; ++k)
	100	putc(env_get_char(k));
	101	putc ('\n');
	102
	103	if (ctrlc()) {
	104	puts ("\n ** Abort\n");
	105	return 1;
	106	}
	107	}
	108
d5996dd5 WD	109	printf("\nEnvironment size: %d/%ld bytes\n",
d5996dd5 WD	110	i, (ulong)ENV_SIZE);
a68d3ed0 WD	111
	112	return 0;
	113	}
	114
	115	for (i=1; i<argc; ++i) { /* print single env variables */
	116	char *name = argv[i];
	117
	118	k = -1;
	119
	120	for (j=0; env_get_char(j) != '\0'; j=nxt+1) {
	121
	122	for (nxt=j; env_get_char(nxt) != '\0'; ++nxt)
	123	;
77ddac94	124	k = envmatch((uchar *)name, j);
a68d3ed0 WD	125	if (k < 0) {
	126	continue;
	127	}
	128	puts (name);
	129	putc ('=');
	130	while (k < nxt)
	131	putc(env_get_char(k++));
	132	putc ('\n');
	133	break;
	134	}
	135	if (k < 0) {
	136	printf ("## Error: \"%s\" not defined\n", name);
	137	rcode ++;
	138	}
	139	}
	140	return rcode;
	141	}
	142
	143	/************************************************************************
	144	* Set a new environment variable,
	145	* or replace or delete an existing one.
	146	*
	147	* This function will ONLY work with a in-RAM copy of the environment
	148	*/
	149
	150	int _do_setenv (int flag, int argc, char *argv[])
	151	{
a68d3ed0 WD	152	int i, len, oldval;
	153	int console = -1;
	154	uchar env, nxt = NULL;
77ddac94	155	char *name;
a68d3ed0 WD	156	bd_t *bd = gd->bd;
	157
	158	uchar *env_data = env_get_addr(0);
	159
	160	if (!env_data) /* need copy in RAM */
	161	return 1;
	162
	163	name = argv[1];
	164
471a7be7 WD	165	if (strchr(name, '=')) {
	166	printf ("## Error: illegal character '=' in variable name \"%s\"\n", name);
	167	return 1;
	168	}
	169
2f70c49e	170	env_id++;
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	*/
f6a69559	192	if (
c74b2108 SK	193	#ifdef CONFIG_HAS_UID
c74b2108 SK	194	/* Allow serial# forced overwrite with 0xdeaf4add flag */
f6a69559	195	((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) \|\|
c74b2108	196	#else
f6a69559	197	(strcmp (name, "serial#") == 0) \|\|
c74b2108	198	#endif
a68d3ed0 WD	199	((strcmp (name, "ethaddr") == 0)
a68d3ed0 WD	200	#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
77ddac94	201	&& (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0)
a68d3ed0 WD	202	#endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
	203	) ) {
	204	printf ("Can't overwrite \"%s\"\n", name);
	205	return 1;
	206	}
	207	#endif
	208
	209	/* Check for console redirection */
	210	if (strcmp(name,"stdin") == 0) {
	211	console = stdin;
	212	} else if (strcmp(name,"stdout") == 0) {
	213	console = stdout;
	214	} else if (strcmp(name,"stderr") == 0) {
	215	console = stderr;
	216	}
	217
	218	if (console != -1) {
	219	if (argc < 3) { /* Cannot delete it! */
	220	printf("Can't delete \"%s\"\n", name);
	221	return 1;
	222	}
	223
16a28ef2 GJ	224	#ifdef CONFIG_CONSOLE_MUX
	225	i = iomux_doenv(console, argv[2]);
	226	if (i)
	227	return i;
	228	#else
a68d3ed0 WD	229	/* Try assigning specified device */
	230	if (console_assign (console, argv[2]) < 0)
	231	return 1;
281e00a3 WD	232
	233	#ifdef CONFIG_SERIAL_MULTI
	234	if (serial_assign (argv[2]) < 0)
	235	return 1;
	236	#endif
16a28ef2	237	#endif /* CONFIG_CONSOLE_MUX */
a68d3ed0 WD	238	}
	239
	240	/*
	241	* Switch to new baudrate if new baudrate is supported
	242	*/
	243	if (strcmp(argv[1],"baudrate") == 0) {
	244	int baudrate = simple_strtoul(argv[2], NULL, 10);
	245	int i;
	246	for (i=0; i<N_BAUDRATES; ++i) {
	247	if (baudrate == baudrate_table[i])
	248	break;
	249	}
	250	if (i == N_BAUDRATES) {
	251	printf ("## Baudrate %d bps not supported\n",
	252	baudrate);
	253	return 1;
	254	}
	255	printf ("## Switch baudrate to %d bps and press ENTER ...\n",
	256	baudrate);
	257	udelay(50000);
	258	gd->baudrate = baudrate;
c84bad0e	259	#if defined(CONFIG_PPC) \|\| defined(CONFIG_MCF52x2)
d0fb80c3 WD	260	gd->bd->bi_baudrate = baudrate;
	261	#endif
	262
a68d3ed0 WD	263	serial_setbrg ();
	264	udelay(50000);
	265	for (;;) {
	266	if (getc() == '\r')
	267	break;
	268	}
	269	}
	270
	271	if (*++nxt == '\0') {
	272	if (env > env_data) {
	273	env--;
	274	} else {
	275	*env = '\0';
	276	}
	277	} else {
	278	for (;;) {
	279	env = nxt++;
	280	if ((env == '\0') && (nxt == '\0'))
	281	break;
	282	++env;
	283	}
	284	}
	285	*++env = '\0';
	286	}
	287
a68d3ed0 WD	288	/* Delete only ? */
	289	if ((argc < 3) \|\| argv[2] == NULL) {
	290	env_crc_update ();
	291	return 0;
	292	}
	293
	294	/*
	295	* Append new definition at the end
	296	*/
	297	for (env=env_data; env \|\| (env+1); ++env)
	298	;
	299	if (env > env_data)
	300	++env;
	301	/*
	302	* Overflow when:
	303	* "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data)
	304	*/
	305	len = strlen(name) + 2;
	306	/* add '=' for first arg, ' ' for all others */
	307	for (i=2; i<argc; ++i) {
	308	len += strlen(argv[i]) + 1;
	309	}
	310	if (len > (&env_data[ENV_SIZE]-env)) {
	311	printf ("## Error: environment overflow, \"%s\" deleted\n", name);
	312	return 1;
	313	}
	314	while ((env = name++) != '\0')
	315	env++;
	316	for (i=2; i<argc; ++i) {
	317	char *val = argv[i];
	318
	319	*env = (i==2) ? '=' : ' ';
	320	while ((++env = val++) != '\0')
	321	;
	322	}
	323
	324	/* end is marked with double '\0' */
	325	*++env = '\0';
	326
	327	/* Update CRC */
	328	env_crc_update ();
	329
	330	/*
	331	* Some variables should be updated when the corresponding
	332	* entry in the enviornment is changed
	333	*/
	334
56b555a6	335	if (strcmp(argv[1],"ethaddr") == 0)
a68d3ed0	336	return 0;
a68d3ed0 WD	337
	338	if (strcmp(argv[1],"ipaddr") == 0) {
	339	char s = argv[2]; / always use only one arg */
	340	char *e;
	341	unsigned long addr;
	342	bd->bi_ip_addr = 0;
	343	for (addr=0, i=0; i<4; ++i) {
	344	ulong val = s ? simple_strtoul(s, &e, 10) : 0;
	345	addr <<= 8;
	346	addr \|= (val & 0xFF);
	347	if (s) s = (*e) ? e+1 : e;
	348	}
	349	bd->bi_ip_addr = htonl(addr);
	350	return 0;
	351	}
	352	if (strcmp(argv[1],"loadaddr") == 0) {
	353	load_addr = simple_strtoul(argv[2], NULL, 16);
	354	return 0;
	355	}
c76fe474	356	#if defined(CONFIG_CMD_NET)
a68d3ed0 WD	357	if (strcmp(argv[1],"bootfile") == 0) {
	358	copy_filename (BootFile, argv[2], sizeof(BootFile));
	359	return 0;
	360	}
90253178	361	#endif
c7de829c	362
0587597c	363	#ifdef CONFIG_AMIGAONEG3SE
c7de829c WD	364	if (strcmp(argv[1], "vga_fg_color") == 0 \|\|
	365	strcmp(argv[1], "vga_bg_color") == 0 ) {
	366	extern void video_set_color(unsigned char attr);
	367	extern unsigned char video_get_attr(void);
	368
	369	video_set_color(video_get_attr());
	370	return 0;
	371	}
	372	#endif /* CONFIG_AMIGAONEG3SE */
	373
a68d3ed0 WD	374	return 0;
	375	}
	376
75678c80	377	int setenv (char varname, char varvalue)
a68d3ed0 WD	378	{
a68d3ed0 WD	379	char *argv[4] = { "setenv", varname, varvalue, NULL };
9ffd451a	380	if (varvalue == NULL)
75678c80	381	return _do_setenv (0, 2, argv);
9ffd451a	382	else
75678c80	383	return _do_setenv (0, 3, argv);
a68d3ed0 WD	384	}
a68d3ed0 WD	385
c74b2108 SK	386	#ifdef CONFIG_HAS_UID
	387	void forceenv (char varname, char varvalue)
	388	{
	389	char *argv[4] = { "forceenv", varname, varvalue, NULL };
	390	_do_setenv (0xdeaf4add, 3, argv);
	391	}
	392	#endif
	393
	394	int do_setenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
a68d3ed0 WD	395	{
a68d3ed0 WD	396	if (argc < 2) {
62c3ae7c	397	cmd_usage(cmdtp);
a68d3ed0 WD	398	return 1;
	399	}
	400
	401	return _do_setenv (flag, argc, argv);
	402	}
	403
	404	/************************************************************************
	405	* Prompt for environment variable
	406	*/
	407
c76fe474	408	#if defined(CONFIG_CMD_ASKENV)
a68d3ed0 WD	409	int do_askenv ( cmd_tbl_t cmdtp, int flag, int argc, char argv[])
a68d3ed0 WD	410	{
6d0f6bcf JCPV	411	extern char console_buffer[CONFIG_SYS_CBSIZE];
	412	char message[CONFIG_SYS_CBSIZE];
	413	int size = CONFIG_SYS_CBSIZE - 1;
a68d3ed0 WD	414	int len;
	415	char *local_args[4];
	416
	417	local_args[0] = argv[0];
	418	local_args[1] = argv[1];
	419	local_args[2] = NULL;
	420	local_args[3] = NULL;
	421
	422	if (argc < 2) {
62c3ae7c	423	cmd_usage(cmdtp);
a68d3ed0 WD	424	return 1;
	425	}
	426	/* Check the syntax */
	427	switch (argc) {
	428	case 1:
62c3ae7c	429	cmd_usage(cmdtp);
a68d3ed0 WD	430	return 1;
	431
	432	case 2: /* askenv envname */
	433	sprintf (message, "Please enter '%s':", argv[1]);
	434	break;
	435
	436	case 3: /* askenv envname size */
	437	sprintf (message, "Please enter '%s':", argv[1]);
	438	size = simple_strtoul (argv[2], NULL, 10);
	439	break;
	440
	441	default: /* askenv envname message1 ... messagen size */
	442	{
	443	int i;
	444	int pos = 0;
	445
	446	for (i = 2; i < argc - 1; i++) {
	447	if (pos) {
	448	message[pos++] = ' ';
	449	}
	450	strcpy (message+pos, argv[i]);
	451	pos += strlen(argv[i]);
	452	}
	453	message[pos] = '\0';
	454	size = simple_strtoul (argv[argc - 1], NULL, 10);
	455	}
	456	break;
	457	}
	458
6d0f6bcf JCPV	459	if (size >= CONFIG_SYS_CBSIZE)
6d0f6bcf JCPV	460	size = CONFIG_SYS_CBSIZE - 1;
a68d3ed0 WD	461
	462	if (size <= 0)
	463	return 1;
	464
	465	/* prompt for input */
	466	len = readline (message);
	467
	468	if (size < len)
	469	console_buffer[size] = '\0';
	470
	471	len = 2;
	472	if (console_buffer[0] != '\0') {
	473	local_args[2] = console_buffer;
	474	len = 3;
	475	}
	476
	477	/* Continue calling setenv code */
	478	return _do_setenv (flag, len, local_args);
	479	}
90253178	480	#endif
a68d3ed0 WD	481
	482	/************************************************************************
	483	* Look up variable from environment,
	484	* return address of storage for that variable,
	485	* or NULL if not found
	486	*/
	487
77ddac94	488	char getenv (char name)
a68d3ed0 WD	489	{
	490	int i, nxt;
	491
2a3cb020 WD	492	WATCHDOG_RESET();
2a3cb020 WD	493
a68d3ed0 WD	494	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	495	int val;
	496
	497	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
0e8d1586	498	if (nxt >= CONFIG_ENV_SIZE) {
a68d3ed0 WD	499	return (NULL);
	500	}
	501	}
77ddac94	502	if ((val=envmatch((uchar *)name, i)) < 0)
a68d3ed0	503	continue;
77ddac94	504	return ((char *)env_get_addr(val));
a68d3ed0 WD	505	}
	506
	507	return (NULL);
	508	}
	509
77ddac94	510	int getenv_r (char name, char buf, unsigned len)
a68d3ed0 WD	511	{
	512	int i, nxt;
	513
	514	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	515	int val, n;
	516
	517	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
0e8d1586	518	if (nxt >= CONFIG_ENV_SIZE) {
a68d3ed0 WD	519	return (-1);
	520	}
	521	}
77ddac94	522	if ((val=envmatch((uchar *)name, i)) < 0)
a68d3ed0 WD	523	continue;
	524	/* found; copy out */
	525	n = 0;
	526	while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0')
	527	;
	528	if (len == n)
	529	*buf = '\0';
	530	return (n);
	531	}
	532	return (-1);
	533	}
	534
bdab39d3	535	#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
ba69dc26	536
a68d3ed0 WD	537	int do_saveenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	538	{
	539	extern char * env_name_spec;
	540
	541	printf ("Saving Environment to %s...\n", env_name_spec);
	542
	543	return (saveenv() ? 1 : 0);
	544	}
8bde7f77	545
ba69dc26 MF	546	U_BOOT_CMD(
ba69dc26 MF	547	saveenv, 1, 0, do_saveenv,
2fb2604d	548	"save environment variables to persistent storage",
ba69dc26 MF	549	NULL
	550	);
	551
a68d3ed0 WD	552	#endif
	553
	554
	555	/************************************************************************
	556	* Match a name / name=value pair
	557	*
	558	* s1 is either a simple 'name', or a 'name=value' pair.
	559	* i2 is the environment index for a 'name2=value2' pair.
	560	* If the names match, return the index for the value2, else NULL.
	561	*/
	562
26a41790	563	int envmatch (uchar *s1, int i2)
a68d3ed0 WD	564	{
	565
	566	while (*s1 == env_get_char(i2++))
	567	if (*s1++ == '=')
	568	return(i2);
	569	if (*s1 == '\0' && env_get_char(i2-1) == '=')
	570	return(i2);
	571	return(-1);
	572	}
8bde7f77 WD	573
	574
	575	/**************************************************/
	576
0d498393	577	U_BOOT_CMD(
6d0f6bcf	578	printenv, CONFIG_SYS_MAXARGS, 1, do_printenv,
2fb2604d	579	"print environment variables",
8bde7f77 WD	580	"\n - print values of all environment variables\n"
	581	"printenv name ...\n"
	582	" - print value of environment variable 'name'\n"
	583	);
	584
0d498393	585	U_BOOT_CMD(
6d0f6bcf	586	setenv, CONFIG_SYS_MAXARGS, 0, do_setenv,
2fb2604d	587	"set environment variables",
8bde7f77 WD	588	"name value ...\n"
	589	" - set environment variable 'name' to 'value ...'\n"
	590	"setenv name\n"
	591	" - delete environment variable 'name'\n"
	592	);
	593
c76fe474	594	#if defined(CONFIG_CMD_ASKENV)
8bde7f77	595
0d498393	596	U_BOOT_CMD(
6d0f6bcf	597	askenv, CONFIG_SYS_MAXARGS, 1, do_askenv,
2fb2604d	598	"get environment variables from stdin",
8bde7f77 WD	599	"name [message] [size]\n"
	600	" - get environment variable 'name' from stdin (max 'size' chars)\n"
	601	"askenv name\n"
	602	" - get environment variable 'name' from stdin\n"
	603	"askenv name size\n"
	604	" - get environment variable 'name' from stdin (max 'size' chars)\n"
	605	"askenv name [message] size\n"
	606	" - display 'message' string and get environment variable 'name'"
	607	"from stdin (max 'size' chars)\n"
	608	);
90253178	609	#endif
8bde7f77	610
c76fe474	611	#if defined(CONFIG_CMD_RUN)
8bde7f77	612	int do_run (cmd_tbl_t cmdtp, int flag, int argc, char argv[]);
0d498393	613	U_BOOT_CMD(
6d0f6bcf	614	run, CONFIG_SYS_MAXARGS, 1, do_run,
2fb2604d	615	"run commands in an environment variable",
8bde7f77 WD	616	"var [...]\n"
	617	" - run the commands in the environment variable(s) 'var'\n"
	618	);
90253178	619	#endif