[J-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(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);

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

static int envmatch (uchar *, int);

/*
 * 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.
 */

static 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, [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
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
	84	static int envmatch (uchar *, int);
	85
	86	/*
	87	* Table with supported baudrates (defined in config_xyz.h)
	88	*/
	89	static const unsigned long baudrate_table[] = CFG_BAUDRATE_TABLE;
	90	#define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0]))
	91
	92
	93	/************************************************************************
	94	* Command interface: print one or all environment variables
	95	*/
	96
	97	int do_printenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	98	{
	99	int i, j, k, nxt;
	100	int rcode = 0;
	101
	102	if (argc == 1) { /* Print all env variables */
	103	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	104	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt)
	105	;
	106	for (k=i; k<nxt; ++k)
	107	putc(env_get_char(k));
	108	putc ('\n');
	109
	110	if (ctrlc()) {
	111	puts ("\n ** Abort\n");
	112	return 1;
	113	}
	114	}
	115
	116	printf("\nEnvironment size: %d/%d bytes\n", i, ENV_SIZE);
	117
	118	return 0;
	119	}
	120
	121	for (i=1; i<argc; ++i) { /* print single env variables */
	122	char *name = argv[i];
	123
	124	k = -1;
	125
	126	for (j=0; env_get_char(j) != '\0'; j=nxt+1) {
127
128	for (nxt=j; env_get_char(nxt) != '\0'; ++nxt)
129	;
77ddac94	130	k = envmatch((uchar *)name, j);
a68d3ed0 WD	131	if (k < 0) {
	132	continue;
	133	}
	134	puts (name);
	135	putc ('=');
	136	while (k < nxt)
	137	putc(env_get_char(k++));
	138	putc ('\n');
	139	break;
	140	}
	141	if (k < 0) {
	142	printf ("## Error: \"%s\" not defined\n", name);
	143	rcode ++;
	144	}
	145	}
	146	return rcode;
	147	}
	148
	149	/************************************************************************
	150	* Set a new environment variable,
	151	* or replace or delete an existing one.
	152	*
	153	* This function will ONLY work with a in-RAM copy of the environment
	154	*/
	155
	156	int _do_setenv (int flag, int argc, char *argv[])
	157	{
a68d3ed0 WD	158	int i, len, oldval;
	159	int console = -1;
	160	uchar env, nxt = NULL;
77ddac94	161	char *name;
a68d3ed0 WD	162	bd_t *bd = gd->bd;
	163
	164	uchar *env_data = env_get_addr(0);
	165
	166	if (!env_data) /* need copy in RAM */
	167	return 1;
	168
	169	name = argv[1];
	170
471a7be7 WD	171	if (strchr(name, '=')) {
	172	printf ("## Error: illegal character '=' in variable name \"%s\"\n", name);
	173	return 1;
	174	}
	175
a68d3ed0 WD	176	/*
	177	* search if variable with this name already exists
	178	*/
	179	oldval = -1;
	180	for (env=env_data; *env; env=nxt+1) {
	181	for (nxt=env; *nxt; ++nxt)
	182	;
77ddac94	183	if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0)
a68d3ed0 WD	184	break;
	185	}
	186
	187	/*
	188	* Delete any existing definition
	189	*/
	190	if (oldval >= 0) {
	191	#ifndef CONFIG_ENV_OVERWRITE
	192
	193	/*
0587597c SR	194	* Ethernet Address and serial# can be set only once,
0587597c SR	195	* ver is readonly.
a68d3ed0	196	*/
c74b2108 SK	197	#ifdef CONFIG_HAS_UID
	198	/* Allow serial# forced overwrite with 0xdeaf4add flag */
	199	if ( ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) \|\|
	200	#else
a68d3ed0	201	if ( (strcmp (name, "serial#") == 0) \|\|
c74b2108	202	#endif
a68d3ed0 WD	203	((strcmp (name, "ethaddr") == 0)
a68d3ed0 WD	204	#if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR)
77ddac94	205	&& (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0)
a68d3ed0 WD	206	#endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */
	207	) ) {
	208	printf ("Can't overwrite \"%s\"\n", name);
	209	return 1;
	210	}
	211	#endif
	212
	213	/* Check for console redirection */
	214	if (strcmp(name,"stdin") == 0) {
	215	console = stdin;
	216	} else if (strcmp(name,"stdout") == 0) {
	217	console = stdout;
	218	} else if (strcmp(name,"stderr") == 0) {
	219	console = stderr;
	220	}
	221
	222	if (console != -1) {
	223	if (argc < 3) { /* Cannot delete it! */
	224	printf("Can't delete \"%s\"\n", name);
	225	return 1;
	226	}
	227
	228	/* Try assigning specified device */
	229	if (console_assign (console, argv[2]) < 0)
	230	return 1;
281e00a3 WD	231
	232	#ifdef CONFIG_SERIAL_MULTI
	233	if (serial_assign (argv[2]) < 0)
	234	return 1;
	235	#endif
a68d3ed0 WD	236	}
	237
	238	/*
	239	* Switch to new baudrate if new baudrate is supported
	240	*/
	241	if (strcmp(argv[1],"baudrate") == 0) {
	242	int baudrate = simple_strtoul(argv[2], NULL, 10);
	243	int i;
	244	for (i=0; i<N_BAUDRATES; ++i) {
	245	if (baudrate == baudrate_table[i])
	246	break;
	247	}
	248	if (i == N_BAUDRATES) {
	249	printf ("## Baudrate %d bps not supported\n",
	250	baudrate);
	251	return 1;
	252	}
	253	printf ("## Switch baudrate to %d bps and press ENTER ...\n",
	254	baudrate);
	255	udelay(50000);
	256	gd->baudrate = baudrate;
c84bad0e	257	#if defined(CONFIG_PPC) \|\| defined(CONFIG_MCF52x2)
d0fb80c3 WD	258	gd->bd->bi_baudrate = baudrate;
	259	#endif
	260
a68d3ed0 WD	261	serial_setbrg ();
	262	udelay(50000);
	263	for (;;) {
	264	if (getc() == '\r')
	265	break;
	266	}
	267	}
	268
	269	if (*++nxt == '\0') {
	270	if (env > env_data) {
	271	env--;
	272	} else {
	273	*env = '\0';
	274	}
	275	} else {
	276	for (;;) {
	277	env = nxt++;
	278	if ((env == '\0') && (nxt == '\0'))
	279	break;
	280	++env;
	281	}
	282	}
	283	*++env = '\0';
	284	}
	285
	286	#ifdef CONFIG_NET_MULTI
	287	if (strncmp(name, "eth", 3) == 0) {
	288	char *end;
	289	int num = simple_strtoul(name+3, &end, 10);
	290
	291	if (strcmp(end, "addr") == 0) {
	292	eth_set_enetaddr(num, argv[2]);
	293	}
	294	}
	295	#endif
	296
	297
	298	/* Delete only ? */
	299	if ((argc < 3) \|\| argv[2] == NULL) {
	300	env_crc_update ();
	301	return 0;
	302	}
	303
	304	/*
	305	* Append new definition at the end
	306	*/
	307	for (env=env_data; env \|\| (env+1); ++env)
	308	;
	309	if (env > env_data)
	310	++env;
	311	/*
	312	* Overflow when:
	313	* "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data)
	314	*/
	315	len = strlen(name) + 2;
	316	/* add '=' for first arg, ' ' for all others */
	317	for (i=2; i<argc; ++i) {
	318	len += strlen(argv[i]) + 1;
	319	}
	320	if (len > (&env_data[ENV_SIZE]-env)) {
	321	printf ("## Error: environment overflow, \"%s\" deleted\n", name);
	322	return 1;
	323	}
	324	while ((env = name++) != '\0')
325	env++;
326	for (i=2; i<argc; ++i) {
327	char *val = argv[i];
328
329	*env = (i==2) ? '=' : ' ';
330	while ((++env = val++) != '\0')
331	;
332	}
333
334	/* end is marked with double '\0' */
335	*++env = '\0';
336
337	/* Update CRC */
338	env_crc_update ();
339
340	/*
341	* Some variables should be updated when the corresponding
342	* entry in the enviornment is changed
343	*/
344
345	if (strcmp(argv[1],"ethaddr") == 0) {
346	char s = argv[2]; / always use only one arg */
347	char *e;
348	for (i=0; i<6; ++i) {
349	bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0;
350	if (s) s = (*e) ? e+1 : e;
351	}
352	#ifdef CONFIG_NET_MULTI
353	eth_set_enetaddr(0, argv[2]);
354	#endif
355	return 0;
356	}
357
358	if (strcmp(argv[1],"ipaddr") == 0) {
359	char s = argv[2]; / always use only one arg */
360	char *e;
361	unsigned long addr;
362	bd->bi_ip_addr = 0;
363	for (addr=0, i=0; i<4; ++i) {
364	ulong val = s ? simple_strtoul(s, &e, 10) : 0;
365	addr <<= 8;
366	addr \|= (val & 0xFF);
367	if (s) s = (*e) ? e+1 : e;
368	}
369	bd->bi_ip_addr = htonl(addr);
370	return 0;
371	}
372	if (strcmp(argv[1],"loadaddr") == 0) {
373	load_addr = simple_strtoul(argv[2], NULL, 16);
374	return 0;
375	}
c76fe474	376	#if defined(CONFIG_CMD_NET)
a68d3ed0 WD	377	if (strcmp(argv[1],"bootfile") == 0) {
	378	copy_filename (BootFile, argv[2], sizeof(BootFile));
	379	return 0;
	380	}
90253178	381	#endif
c7de829c	382
0587597c	383	#ifdef CONFIG_AMIGAONEG3SE
c7de829c WD	384	if (strcmp(argv[1], "vga_fg_color") == 0 \|\|
	385	strcmp(argv[1], "vga_bg_color") == 0 ) {
	386	extern void video_set_color(unsigned char attr);
	387	extern unsigned char video_get_attr(void);
	388
	389	video_set_color(video_get_attr());
	390	return 0;
	391	}
	392	#endif /* CONFIG_AMIGAONEG3SE */
	393
a68d3ed0 WD	394	return 0;
	395	}
	396
	397	void setenv (char varname, char varvalue)
	398	{
	399	char *argv[4] = { "setenv", varname, varvalue, NULL };
9ffd451a JM	400	if (varvalue == NULL)
	401	_do_setenv (0, 2, argv);
	402	else
	403	_do_setenv (0, 3, argv);
a68d3ed0 WD	404	}
a68d3ed0 WD	405
c74b2108 SK	406	#ifdef CONFIG_HAS_UID
	407	void forceenv (char varname, char varvalue)
	408	{
	409	char *argv[4] = { "forceenv", varname, varvalue, NULL };
	410	_do_setenv (0xdeaf4add, 3, argv);
	411	}
	412	#endif
	413
	414	int do_setenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
a68d3ed0 WD	415	{
	416	if (argc < 2) {
	417	printf ("Usage:\n%s\n", cmdtp->usage);
	418	return 1;
	419	}
	420
	421	return _do_setenv (flag, argc, argv);
	422	}
	423
	424	/************************************************************************
	425	* Prompt for environment variable
	426	*/
	427
c76fe474	428	#if defined(CONFIG_CMD_ASKENV)
a68d3ed0 WD	429	int do_askenv ( cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	430	{
	431	extern char console_buffer[CFG_CBSIZE];
	432	char message[CFG_CBSIZE];
	433	int size = CFG_CBSIZE - 1;
	434	int len;
	435	char *local_args[4];
	436
	437	local_args[0] = argv[0];
	438	local_args[1] = argv[1];
	439	local_args[2] = NULL;
	440	local_args[3] = NULL;
	441
	442	if (argc < 2) {
	443	printf ("Usage:\n%s\n", cmdtp->usage);
	444	return 1;
	445	}
	446	/* Check the syntax */
	447	switch (argc) {
	448	case 1:
	449	printf ("Usage:\n%s\n", cmdtp->usage);
	450	return 1;
	451
	452	case 2: /* askenv envname */
	453	sprintf (message, "Please enter '%s':", argv[1]);
	454	break;
	455
	456	case 3: /* askenv envname size */
	457	sprintf (message, "Please enter '%s':", argv[1]);
	458	size = simple_strtoul (argv[2], NULL, 10);
	459	break;
	460
	461	default: /* askenv envname message1 ... messagen size */
	462	{
	463	int i;
	464	int pos = 0;
	465
	466	for (i = 2; i < argc - 1; i++) {
	467	if (pos) {
	468	message[pos++] = ' ';
	469	}
	470	strcpy (message+pos, argv[i]);
	471	pos += strlen(argv[i]);
	472	}
	473	message[pos] = '\0';
	474	size = simple_strtoul (argv[argc - 1], NULL, 10);
	475	}
	476	break;
	477	}
	478
	479	if (size >= CFG_CBSIZE)
	480	size = CFG_CBSIZE - 1;
	481
	482	if (size <= 0)
	483	return 1;
	484
	485	/* prompt for input */
	486	len = readline (message);
	487
	488	if (size < len)
	489	console_buffer[size] = '\0';
	490
	491	len = 2;
	492	if (console_buffer[0] != '\0') {
493	local_args[2] = console_buffer;
494	len = 3;
495	}
496
497	/* Continue calling setenv code */
498	return _do_setenv (flag, len, local_args);
499	}
90253178	500	#endif
a68d3ed0 WD	501
	502	/************************************************************************
	503	* Look up variable from environment,
	504	* return address of storage for that variable,
	505	* or NULL if not found
	506	*/
	507
77ddac94	508	char getenv (char name)
a68d3ed0 WD	509	{
	510	int i, nxt;
	511
2a3cb020 WD	512	WATCHDOG_RESET();
2a3cb020 WD	513
a68d3ed0 WD	514	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	515	int val;
	516
	517	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
	518	if (nxt >= CFG_ENV_SIZE) {
	519	return (NULL);
	520	}
	521	}
77ddac94	522	if ((val=envmatch((uchar *)name, i)) < 0)
a68d3ed0	523	continue;
77ddac94	524	return ((char *)env_get_addr(val));
a68d3ed0 WD	525	}
	526
	527	return (NULL);
	528	}
	529
77ddac94	530	int getenv_r (char name, char buf, unsigned len)
a68d3ed0 WD	531	{
	532	int i, nxt;
	533
	534	for (i=0; env_get_char(i) != '\0'; i=nxt+1) {
	535	int val, n;
	536
	537	for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) {
	538	if (nxt >= CFG_ENV_SIZE) {
	539	return (-1);
	540	}
	541	}
77ddac94	542	if ((val=envmatch((uchar *)name, i)) < 0)
a68d3ed0 WD	543	continue;
	544	/* found; copy out */
	545	n = 0;
	546	while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0')
	547	;
	548	if (len == n)
	549	*buf = '\0';
	550	return (n);
	551	}
	552	return (-1);
	553	}
	554
3865b1fb	555	#if defined(CFG_ENV_IS_IN_NVRAM) \|\| defined(CFG_ENV_IS_IN_EEPROM) \
65c450b4	556	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
d7e8ce10 KP	557	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
d7e8ce10 KP	558	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))
a68d3ed0 WD	559	int do_saveenv (cmd_tbl_t cmdtp, int flag, int argc, char argv[])
	560	{
	561	extern char * env_name_spec;
	562
	563	printf ("Saving Environment to %s...\n", env_name_spec);
	564
	565	return (saveenv() ? 1 : 0);
	566	}
8bde7f77	567
a68d3ed0 WD	568	#endif
	569
	570
	571	/************************************************************************
	572	* Match a name / name=value pair
	573	*
	574	* s1 is either a simple 'name', or a 'name=value' pair.
	575	* i2 is the environment index for a 'name2=value2' pair.
	576	* If the names match, return the index for the value2, else NULL.
	577	*/
	578
	579	static int
	580	envmatch (uchar *s1, int i2)
	581	{
	582
	583	while (*s1 == env_get_char(i2++))
	584	if (*s1++ == '=')
	585	return(i2);
	586	if (*s1 == '\0' && env_get_char(i2-1) == '=')
	587	return(i2);
	588	return(-1);
	589	}
8bde7f77 WD	590
	591
	592	/**************************************************/
	593
0d498393 WD	594	U_BOOT_CMD(
0d498393 WD	595	printenv, CFG_MAXARGS, 1, do_printenv,
8bde7f77 WD	596	"printenv- print environment variables\n",
	597	"\n - print values of all environment variables\n"
	598	"printenv name ...\n"
	599	" - print value of environment variable 'name'\n"
	600	);
	601
0d498393 WD	602	U_BOOT_CMD(
0d498393 WD	603	setenv, CFG_MAXARGS, 0, do_setenv,
8bde7f77 WD	604	"setenv - set environment variables\n",
	605	"name value ...\n"
	606	" - set environment variable 'name' to 'value ...'\n"
	607	"setenv name\n"
	608	" - delete environment variable 'name'\n"
	609	);
	610
3865b1fb	611	#if defined(CFG_ENV_IS_IN_NVRAM) \|\| defined(CFG_ENV_IS_IN_EEPROM) \
65c450b4	612	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_FLASH)) \
d7e8ce10 KP	613	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_NAND)) \
d7e8ce10 KP	614	\|\| (defined(CONFIG_CMD_ENV) && defined(CONFIG_CMD_ONENAND))
0d498393 WD	615	U_BOOT_CMD(
0d498393 WD	616	saveenv, 1, 0, do_saveenv,
8bde7f77 WD	617	"saveenv - save environment variables to persistent storage\n",
	618	NULL
	619	);
	620
90253178	621	#endif
8bde7f77	622
c76fe474	623	#if defined(CONFIG_CMD_ASKENV)
8bde7f77	624
0d498393 WD	625	U_BOOT_CMD(
0d498393 WD	626	askenv, CFG_MAXARGS, 1, do_askenv,
8bde7f77 WD	627	"askenv - get environment variables from stdin\n",
	628	"name [message] [size]\n"
	629	" - get environment variable 'name' from stdin (max 'size' chars)\n"
	630	"askenv name\n"
	631	" - get environment variable 'name' from stdin\n"
	632	"askenv name size\n"
	633	" - get environment variable 'name' from stdin (max 'size' chars)\n"
	634	"askenv name [message] size\n"
	635	" - display 'message' string and get environment variable 'name'"
	636	"from stdin (max 'size' chars)\n"
	637	);
90253178	638	#endif
8bde7f77	639
c76fe474	640	#if defined(CONFIG_CMD_RUN)
8bde7f77	641	int do_run (cmd_tbl_t cmdtp, int flag, int argc, char argv[]);
0d498393 WD	642	U_BOOT_CMD(
0d498393 WD	643	run, CFG_MAXARGS, 1, do_run,
8bde7f77 WD	644	"run - run commands in an environment variable\n",
	645	"var [...]\n"
	646	" - run the commands in the environment variable(s) 'var'\n"
	647	);
90253178	648	#endif