[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 character from the environment */
extern uchar (*env_get_char)(int);

/* 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))
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))
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
	71	/* Function that returns a character from the environment */
	72	extern uchar (*env_get_char)(int);
	73
	74	/* Function that returns a pointer to a value from the environment */
	75	/* (Only memory version supported / needed). */
	76	extern uchar *env_get_addr(int);
	77
	78	/* Function that updates CRC of the enironment */
	79	extern void env_crc_update (void);
	80
	81	/************************************************************************
	82	************************************************************************/
	83
a68d3ed0 WD	84	/*
	85	* Table with supported baudrates (defined in config_xyz.h)
	86	*/
	87	static const unsigned long baudrate_table[] = CFG_BAUDRATE_TABLE;
	88	#define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
	89
	90
	91	/************************************************************************
	92	* Command interface: print one or all environment variables
	93	*/
	94
	95	int do_printenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	96	{
	97	int i, j, k, nxt;
	98	int rcode = 0;
	99
	100	if (argc == 1) { /* Print all env variables */
	101	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	102	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
	103	;
	104	for (k=i; k<nxt; ++k)
	105	putc(env_get_char(k));
	106	putc ('\n');
	107
	108	if (ctrlc()) {
	109	puts ("\n ** Abort\n");
	110	return 1;
	111	}
	112	}
	113
	114	printf("\nEnvironment size: %d/%d bytes\n", i, ENV_SIZE);
	115
	116	return 0;
	117	}
	118
	119	for (i=1; i<argc; ++i) { /* print single env variables */
	120	char *name = argv[i];
	121
	122	k = -1;
	123
	124	for (j=0; env_get_char(j) != '\0'; j=nxt+1) {
	125
	126	for (nxt=j; env_get_char(nxt) != '\0'; ++nxt)
	127	;
77ddac94	128	k = envmatch((uchar *)name, j);
a68d3ed0 WD	129	if (k < 0) {
	130	continue;
	131	}
	132	puts (name);
	133	putc ('=');
	134	while (k < nxt)
	135	putc(env_get_char(k++));
	136	putc ('\n');
	137	break;
	138	}
	139	if (k < 0) {
	140	printf ("## Error: \"%s\" not defined\n", name);
	141	rcode ++;
	142	}
	143	}
	144	return rcode;
	145	}
	146
	147	/************************************************************************
	148	* Set a new environment variable,
	149	* or replace or delete an existing one.
	150	*
	151	* This function will ONLY work with a in-RAM copy of the environment
	152	*/
	153
	154	int _do_setenv (int flag, int argc, char *argv[])
	155	{
a68d3ed0 WD	156	int i, len, oldval;
	157	int console = -1;
	158	uchar env, nxt = NULL;
77ddac94	159	char *name;
a68d3ed0 WD	160	bd_t *bd = gd->bd;
	161
	162	uchar *env_data = env_get_addr(0);
	163
	164	if (!env_data) /* need copy in RAM */
	165	return 1;
	166
	167	name = argv[1];
	168
471a7be7 WD	169	if (strchr(name, '=')) {
	170	printf ("## Error: illegal character '=' in variable name \"%s\"\n", name);
	171	return 1;
	172	}
	173
a68d3ed0 WD	174	/*
	175	* search if variable with this name already exists
	176	*/
	177	oldval = -1;
	178	for (env=env_data; *env; env=nxt+1) {
	179	for (nxt=env; *nxt; ++nxt)
	180	;
77ddac94	181	if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0)
a68d3ed0 WD	182	break;
	183	}
	184
	185	/*
	186	* Delete any existing definition
	187	*/
	188	if (oldval >= 0) {
	189	#ifndef CONFIG_ENV_OVERWRITE
	190
	191	/*
0587597c SR	192	* Ethernet Address and serial# can be set only once,
0587597c SR	193	* ver is readonly.
a68d3ed0	194	*/
c74b2108 SK	195	#ifdef CONFIG_HAS_UID
	196	/* Allow serial# forced overwrite with 0xdeaf4add flag */
	197	if ( ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) \|\|
	198	#else
a68d3ed0	199	if ( (strcmp (name, "serial#") == 0) \|\|
c74b2108	200	#endif
a68d3ed0 WD	201	((strcmp (name, "ethaddr") == 0)
a68d3ed0 WD	202	#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
77ddac94	203	&& (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0)
a68d3ed0 WD	204	#endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
	205	) ) {
	206	printf ("Can't overwrite \"%s\"\n", name);
	207	return 1;
	208	}
	209	#endif
	210
	211	/* Check for console redirection */
	212	if (strcmp(name,"stdin") == 0) {
	213	console = stdin;
	214	} else if (strcmp(name,"stdout") == 0) {
	215	console = stdout;
	216	} else if (strcmp(name,"stderr") == 0) {
	217	console = stderr;
	218	}
	219
	220	if (console != -1) {
	221	if (argc < 3) { /* Cannot delete it! */
	222	printf("Can't delete \"%s\"\n", name);
	223	return 1;
	224	}
	225
	226	/* Try assigning specified device */
	227	if (console_assign (console, argv[2]) < 0)
	228	return 1;
281e00a3 WD	229
	230	#ifdef CONFIG_SERIAL_MULTI
	231	if (serial_assign (argv[2]) < 0)
	232	return 1;
	233	#endif
a68d3ed0 WD	234	}
	235
	236	/*
	237	* Switch to new baudrate if new baudrate is supported
	238	*/
	239	if (strcmp(argv[1],"baudrate") == 0) {
	240	int baudrate = simple_strtoul(argv[2], NULL, 10);
	241	int i;
	242	for (i=0; i<N_BAUDRATES; ++i) {
	243	if (baudrate == baudrate_table[i])
	244	break;
	245	}
	246	if (i == N_BAUDRATES) {
	247	printf ("## Baudrate %d bps not supported\n",
	248	baudrate);
	249	return 1;
	250	}
	251	printf ("## Switch baudrate to %d bps and press ENTER ...\n",
	252	baudrate);
	253	udelay(50000);
	254	gd->baudrate = baudrate;
c84bad0e	255	#if defined(CONFIG_PPC) \|\| defined(CONFIG_MCF52x2)
d0fb80c3 WD	256	gd->bd->bi_baudrate = baudrate;
	257	#endif
	258
a68d3ed0 WD	259	serial_setbrg ();
	260	udelay(50000);
	261	for (;;) {
	262	if (getc() == '\r')
	263	break;
	264	}
	265	}
	266
	267	if (*++nxt == '\0') {
	268	if (env > env_data) {
	269	env--;
	270	} else {
	271	*env = '\0';
	272	}
	273	} else {
	274	for (;;) {
	275	env = nxt++;
	276	if ((env == '\0') && (nxt == '\0'))
	277	break;
	278	++env;
	279	}
	280	}
	281	*++env = '\0';
	282	}
	283
	284	#ifdef CONFIG_NET_MULTI
	285	if (strncmp(name, "eth", 3) == 0) {
	286	char *end;
	287	int num = simple_strtoul(name+3, &end, 10);
	288
	289	if (strcmp(end, "addr") == 0) {
	290	eth_set_enetaddr(num, argv[2]);
	291	}
	292	}
	293	#endif
	294
	295
	296	/* Delete only ? */
	297	if ((argc < 3) \|\| argv[2] == NULL) {
	298	env_crc_update ();
	299	return 0;
	300	}
	301
	302	/*
	303	* Append new definition at the end
	304	*/
	305	for (env=env_data; env \|\| (env+1); ++env)
	306	;
	307	if (env > env_data)
	308	++env;
	309	/*
	310	* Overflow when:
	311	* "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data)
	312	*/
	313	len = strlen(name) + 2;
	314	/* add '=' for first arg, ' ' for all others */
	315	for (i=2; i<argc; ++i) {
	316	len += strlen(argv[i]) + 1;
	317	}
	318	if (len > (&env_data[ENV_SIZE]-env)) {
	319	printf ("## Error: environment overflow, \"%s\" deleted\n", name);
	320	return 1;
	321	}
	322	while ((env = name++) != '\0')
323	env++;
324	for (i=2; i<argc; ++i) {
325	char *val = argv[i];
326
327	*env = (i==2) ? '=' : ' ';
328	while ((++env = val++) != '\0')
329	;
330	}
331
332	/* end is marked with double '\0' */
333	*++env = '\0';
334
335	/* Update CRC */
336	env_crc_update ();
337
338	/*
339	* Some variables should be updated when the corresponding
340	* entry in the enviornment is changed
341	*/
342
343	if (strcmp(argv[1],"ethaddr") == 0) {
344	char s = argv[2]; / always use only one arg */
345	char *e;
346	for (i=0; i<6; ++i) {
347	bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
348	if (s) s = (*e) ? e+1 : e;
349	}
350	#ifdef CONFIG_NET_MULTI
351	eth_set_enetaddr(0, argv[2]);
352	#endif
353	return 0;
354	}
355
356	if (strcmp(argv[1],"ipaddr") == 0) {
357	char s = argv[2]; / always use only one arg */
358	char *e;
359	unsigned long addr;
360	bd->bi_ip_addr = 0;
361	for (addr=0, i=0; i<4; ++i) {
362	ulong val = s ? simple_strtoul(s, &e, 10) : 0;
363	addr <<= 8;
364	addr \|= (val & 0xFF);
365	if (s) s = (*e) ? e+1 : e;
366	}
367	bd->bi_ip_addr = htonl(addr);
368	return 0;
369	}
370	if (strcmp(argv[1],"loadaddr") == 0) {
371	load_addr = simple_strtoul(argv[2], NULL, 16);
372	return 0;
373	}
c76fe474	374	#if defined(CONFIG_CMD_NET)
a68d3ed0 WD	375	if (strcmp(argv[1],"bootfile") == 0) {
	376	copy_filename (BootFile, argv[2], sizeof(BootFile));
	377	return 0;
	378	}
90253178	379	#endif
c7de829c	380
0587597c	381	#ifdef CONFIG_AMIGAONEG3SE
c7de829c WD	382	if (strcmp(argv[1], "vga_fg_color") == 0 \|\|
	383	strcmp(argv[1], "vga_bg_color") == 0 ) {
	384	extern void video_set_color(unsigned char attr);
	385	extern unsigned char video_get_attr(void);
	386
	387	video_set_color(video_get_attr());
	388	return 0;
	389	}
	390	#endif /* CONFIG_AMIGAONEG3SE */
	391
a68d3ed0 WD	392	return 0;
	393	}
	394
	395	void setenv (char varname, char varvalue)
	396	{
	397	char *argv[4] = { "setenv", varname, varvalue, NULL };
9ffd451a JM	398	if (varvalue == NULL)
	399	_do_setenv (0, 2, argv);
	400	else
	401	_do_setenv (0, 3, argv);
a68d3ed0 WD	402	}
a68d3ed0 WD	403
c74b2108 SK	404	#ifdef CONFIG_HAS_UID
	405	void forceenv (char varname, char varvalue)
	406	{
	407	char *argv[4] = { "forceenv", varname, varvalue, NULL };
	408	_do_setenv (0xdeaf4add, 3, argv);
	409	}
	410	#endif
	411
	412	int do_setenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
a68d3ed0 WD	413	{
	414	if (argc < 2) {
	415	printf ("Usage:\n%s\n", cmdtp->usage);
	416	return 1;
	417	}
	418
	419	return _do_setenv (flag, argc, argv);
	420	}
	421
	422	/************************************************************************
	423	* Prompt for environment variable
	424	*/
	425
c76fe474	426	#if defined(CONFIG_CMD_ASKENV)
a68d3ed0 WD	427	int do_askenv ( cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	428	{
	429	extern char console_buffer[CFG_CBSIZE];
	430	char message[CFG_CBSIZE];
	431	int size = CFG_CBSIZE - 1;
	432	int len;
	433	char *local_args[4];
	434
	435	local_args[0] = argv[0];
	436	local_args[1] = argv[1];
	437	local_args[2] = NULL;
	438	local_args[3] = NULL;
	439
	440	if (argc < 2) {
	441	printf ("Usage:\n%s\n", cmdtp->usage);
	442	return 1;
	443	}
	444	/* Check the syntax */
	445	switch (argc) {
	446	case 1:
	447	printf ("Usage:\n%s\n", cmdtp->usage);
	448	return 1;
	449
	450	case 2: /* askenv envname */
	451	sprintf (message, "Please enter '%s':", argv[1]);
	452	break;
	453
	454	case 3: /* askenv envname size */
	455	sprintf (message, "Please enter '%s':", argv[1]);
	456	size = simple_strtoul (argv[2], NULL, 10);
	457	break;
	458
	459	default: /* askenv envname message1 ... messagen size */
	460	{
	461	int i;
	462	int pos = 0;
	463
	464	for (i = 2; i < argc - 1; i++) {
	465	if (pos) {
	466	message[pos++] = ' ';
	467	}
	468	strcpy (message+pos, argv[i]);
	469	pos += strlen(argv[i]);
	470	}
	471	message[pos] = '\0';
	472	size = simple_strtoul (argv[argc - 1], NULL, 10);
	473	}
	474	break;
	475	}
	476
	477	if (size >= CFG_CBSIZE)
	478	size = CFG_CBSIZE - 1;
	479
	480	if (size <= 0)
	481	return 1;
	482
	483	/* prompt for input */
	484	len = readline (message);
	485
	486	if (size < len)
	487	console_buffer[size] = '\0';
	488
	489	len = 2;
	490	if (console_buffer[0] != '\0') {
491	local_args[2] = console_buffer;
492	len = 3;
493	}
494
495	/* Continue calling setenv code */
496	return _do_setenv (flag, len, local_args);
497	}
90253178	498	#endif
a68d3ed0 WD	499
	500	/************************************************************************
	501	* Look up variable from environment,
	502	* return address of storage for that variable,
	503	* or NULL if not found
	504	*/
	505
77ddac94	506	char getenv (char name)
a68d3ed0 WD	507	{
	508	int i, nxt;
	509
2a3cb020 WD	510	WATCHDOG_RESET();
2a3cb020 WD	511
a68d3ed0 WD	512	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	513	int val;
	514
	515	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
	516	if (nxt >= CFG_ENV_SIZE) {
	517	return (NULL);
	518	}
	519	}
77ddac94	520	if ((val=envmatch((uchar *)name, i)) < 0)
a68d3ed0	521	continue;
77ddac94	522	return ((char *)env_get_addr(val));
a68d3ed0 WD	523	}
	524
	525	return (NULL);
	526	}
	527
77ddac94	528	int getenv_r (char name, char buf, unsigned len)
a68d3ed0 WD	529	{
	530	int i, nxt;
	531
	532	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	533	int val, n;
	534
	535	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
	536	if (nxt >= CFG_ENV_SIZE) {
	537	return (-1);
	538	}
	539	}
77ddac94	540	if ((val=envmatch((uchar *)name, i)) < 0)
a68d3ed0 WD	541	continue;
	542	/* found; copy out */
	543	n = 0;
	544	while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0')
	545	;
	546	if (len == n)
	547	*buf = '\0';
	548	return (n);
	549	}
	550	return (-1);
	551	}
	552
3865b1fb	553	#if defined(CFG_ENV_IS_IN_NVRAM) \|\| defined(CFG_ENV_IS_IN_EEPROM) \
65c450b4	554	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
d7e8ce10 KP	555	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
d7e8ce10 KP	556	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))
a68d3ed0 WD	557	int do_saveenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	558	{
	559	extern char * env_name_spec;
	560
	561	printf ("Saving Environment to %s...\n", env_name_spec);
	562
	563	return (saveenv() ? 1 : 0);
	564	}
8bde7f77	565
a68d3ed0 WD	566	#endif
	567
	568
	569	/************************************************************************
	570	* Match a name / name=value pair
	571	*
	572	* s1 is either a simple 'name', or a 'name=value' pair.
	573	* i2 is the environment index for a 'name2=value2' pair.
	574	* If the names match, return the index for the value2, else NULL.
	575	*/
	576
26a41790	577	int envmatch (uchar *s1, int i2)
a68d3ed0 WD	578	{
	579
	580	while (*s1 == env_get_char(i2++))
	581	if (*s1++ == '=')
	582	return(i2);
	583	if (*s1 == '\0' && env_get_char(i2-1) == '=')
	584	return(i2);
	585	return(-1);
	586	}
8bde7f77 WD	587
	588
	589	/**************************************************/
	590
0d498393 WD	591	U_BOOT_CMD(
0d498393 WD	592	printenv, CFG_MAXARGS, 1, do_printenv,
8bde7f77 WD	593	"printenv- print environment variables\n",
	594	"\n - print values of all environment variables\n"
	595	"printenv name ...\n"
	596	" - print value of environment variable 'name'\n"
	597	);
	598
0d498393 WD	599	U_BOOT_CMD(
0d498393 WD	600	setenv, CFG_MAXARGS, 0, do_setenv,
8bde7f77 WD	601	"setenv - set environment variables\n",
	602	"name value ...\n"
	603	" - set environment variable 'name' to 'value ...'\n"
	604	"setenv name\n"
	605	" - delete environment variable 'name'\n"
	606	);
	607
3865b1fb	608	#if defined(CFG_ENV_IS_IN_NVRAM) \|\| defined(CFG_ENV_IS_IN_EEPROM) \
65c450b4	609	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
d7e8ce10 KP	610	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
d7e8ce10 KP	611	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))
0d498393 WD	612	U_BOOT_CMD(
0d498393 WD	613	saveenv, 1, 0, do_saveenv,
8bde7f77 WD	614	"saveenv - save environment variables to persistent storage\n",
	615	NULL
	616	);
	617
90253178	618	#endif
8bde7f77	619
c76fe474	620	#if defined(CONFIG_CMD_ASKENV)
8bde7f77	621
0d498393 WD	622	U_BOOT_CMD(
0d498393 WD	623	askenv, CFG_MAXARGS, 1, do_askenv,
8bde7f77 WD	624	"askenv - get environment variables from stdin\n",
	625	"name [message] [size]\n"
	626	" - get environment variable 'name' from stdin (max 'size' chars)\n"
	627	"askenv name\n"
	628	" - get environment variable 'name' from stdin\n"
	629	"askenv name size\n"
	630	" - get environment variable 'name' from stdin (max 'size' chars)\n"
	631	"askenv name [message] size\n"
	632	" - display 'message' string and get environment variable 'name'"
	633	"from stdin (max 'size' chars)\n"
	634	);
90253178	635	#endif
8bde7f77	636
c76fe474	637	#if defined(CONFIG_CMD_RUN)
8bde7f77	638	int do_run (cmd_tbl_t cmdtp, int flag, int argc, char argv[]);
0d498393 WD	639	U_BOOT_CMD(
0d498393 WD	640	run, CFG_MAXARGS, 1, do_run,
8bde7f77 WD	641	"run - run commands in an environment variable\n",
	642	"var [...]\n"
	643	" - run the commands in the environment variable(s) 'var'\n"
	644	);
90253178	645	#endif