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      1 // SPDX-License-Identifier: GPL-2.0+
      2 /*
      3  * (C) Copyright 2000-2013
      4  * Wolfgang Denk, DENX Software Engineering, wd (at) denx.de.
      5  *
      6  * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
      7  * Andreas Heppel <aheppel (at) sysgo.de>
      8  *
      9  * Copyright 2011 Freescale Semiconductor, Inc.
     10  */
     11 
     12 /*
     13  * Support for persistent environment data
     14  *
     15  * The "environment" is stored on external storage as a list of '\0'
     16  * terminated "name=value" strings. The end of the list is marked by
     17  * a double '\0'. The environment is preceded by a 32 bit CRC over
     18  * the data part and, in case of redundant environment, a byte of
     19  * flags.
     20  *
     21  * This linearized representation will also be used before
     22  * relocation, i. e. as long as we don't have a full C runtime
     23  * environment. After that, we use a hash table.
     24  */
     25 
     26 #include <common.h>
     27 #include <cli.h>
     28 #include <command.h>
     29 #include <console.h>
     30 #include <environment.h>
     31 #include <search.h>
     32 #include <errno.h>
     33 #include <malloc.h>
     34 #include <mapmem.h>
     35 #include <watchdog.h>
     36 #include <linux/stddef.h>
     37 #include <asm/byteorder.h>
     38 #include <asm/io.h>
     39 
     40 DECLARE_GLOBAL_DATA_PTR;
     41 
     42 #if	!defined(CONFIG_ENV_IS_IN_EEPROM)	&& \
     43 	!defined(CONFIG_ENV_IS_IN_FLASH)	&& \
     44 	!defined(CONFIG_ENV_IS_IN_MMC)		&& \
     45 	!defined(CONFIG_ENV_IS_IN_FAT)		&& \
     46 	!defined(CONFIG_ENV_IS_IN_EXT4)		&& \
     47 	!defined(CONFIG_ENV_IS_IN_NAND)		&& \
     48 	!defined(CONFIG_ENV_IS_IN_NVRAM)	&& \
     49 	!defined(CONFIG_ENV_IS_IN_ONENAND)	&& \
     50 	!defined(CONFIG_ENV_IS_IN_SATA)		&& \
     51 	!defined(CONFIG_ENV_IS_IN_SPI_FLASH)	&& \
     52 	!defined(CONFIG_ENV_IS_IN_REMOTE)	&& \
     53 	!defined(CONFIG_ENV_IS_IN_UBI)		&& \
     54 	!defined(CONFIG_ENV_IS_NOWHERE)
     55 # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|MMC|FAT|EXT4|\
     56 NAND|NVRAM|ONENAND|SATA|SPI_FLASH|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE
     57 #endif
     58 
     59 /*
     60  * Maximum expected input data size for import command
     61  */
     62 #define	MAX_ENV_SIZE	(1 << 20)	/* 1 MiB */
     63 
     64 /*
     65  * This variable is incremented on each do_env_set(), so it can
     66  * be used via get_env_id() as an indication, if the environment
     67  * has changed or not. So it is possible to reread an environment
     68  * variable only if the environment was changed ... done so for
     69  * example in NetInitLoop()
     70  */
     71 static int env_id = 1;
     72 
     73 int get_env_id(void)
     74 {
     75 	return env_id;
     76 }
     77 
     78 #ifndef CONFIG_SPL_BUILD
     79 /*
     80  * Command interface: print one or all environment variables
     81  *
     82  * Returns 0 in case of error, or length of printed string
     83  */
     84 static int env_print(char *name, int flag)
     85 {
     86 	char *res = NULL;
     87 	ssize_t len;
     88 
     89 	if (name) {		/* print a single name */
     90 		ENTRY e, *ep;
     91 
     92 		e.key = name;
     93 		e.data = NULL;
     94 		hsearch_r(e, FIND, &ep, &env_htab, flag);
     95 		if (ep == NULL)
     96 			return 0;
     97 		len = printf("%s=%s\n", ep->key, ep->data);
     98 		return len;
     99 	}
    100 
    101 	/* print whole list */
    102 	len = hexport_r(&env_htab, '\n', flag, &res, 0, 0, NULL);
    103 
    104 	if (len > 0) {
    105 		puts(res);
    106 		free(res);
    107 		return len;
    108 	}
    109 
    110 	/* should never happen */
    111 	printf("## Error: cannot export environment\n");
    112 	return 0;
    113 }
    114 
    115 static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc,
    116 			char * const argv[])
    117 {
    118 	int i;
    119 	int rcode = 0;
    120 	int env_flag = H_HIDE_DOT;
    121 
    122 	if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') {
    123 		argc--;
    124 		argv++;
    125 		env_flag &= ~H_HIDE_DOT;
    126 	}
    127 
    128 	if (argc == 1) {
    129 		/* print all env vars */
    130 		rcode = env_print(NULL, env_flag);
    131 		if (!rcode)
    132 			return 1;
    133 		printf("\nEnvironment size: %d/%ld bytes\n",
    134 			rcode, (ulong)ENV_SIZE);
    135 		return 0;
    136 	}
    137 
    138 	/* print selected env vars */
    139 	env_flag &= ~H_HIDE_DOT;
    140 	for (i = 1; i < argc; ++i) {
    141 		int rc = env_print(argv[i], env_flag);
    142 		if (!rc) {
    143 			printf("## Error: \"%s\" not defined\n", argv[i]);
    144 			++rcode;
    145 		}
    146 	}
    147 
    148 	return rcode;
    149 }
    150 
    151 #ifdef CONFIG_CMD_GREPENV
    152 static int do_env_grep(cmd_tbl_t *cmdtp, int flag,
    153 		       int argc, char * const argv[])
    154 {
    155 	char *res = NULL;
    156 	int len, grep_how, grep_what;
    157 
    158 	if (argc < 2)
    159 		return CMD_RET_USAGE;
    160 
    161 	grep_how  = H_MATCH_SUBSTR;	/* default: substring search	*/
    162 	grep_what = H_MATCH_BOTH;	/* default: grep names and values */
    163 
    164 	while (--argc > 0 && **++argv == '-') {
    165 		char *arg = *argv;
    166 		while (*++arg) {
    167 			switch (*arg) {
    168 #ifdef CONFIG_REGEX
    169 			case 'e':		/* use regex matching */
    170 				grep_how  = H_MATCH_REGEX;
    171 				break;
    172 #endif
    173 			case 'n':		/* grep for name */
    174 				grep_what = H_MATCH_KEY;
    175 				break;
    176 			case 'v':		/* grep for value */
    177 				grep_what = H_MATCH_DATA;
    178 				break;
    179 			case 'b':		/* grep for both */
    180 				grep_what = H_MATCH_BOTH;
    181 				break;
    182 			case '-':
    183 				goto DONE;
    184 			default:
    185 				return CMD_RET_USAGE;
    186 			}
    187 		}
    188 	}
    189 
    190 DONE:
    191 	len = hexport_r(&env_htab, '\n',
    192 			flag | grep_what | grep_how,
    193 			&res, 0, argc, argv);
    194 
    195 	if (len > 0) {
    196 		puts(res);
    197 		free(res);
    198 	}
    199 
    200 	if (len < 2)
    201 		return 1;
    202 
    203 	return 0;
    204 }
    205 #endif
    206 #endif /* CONFIG_SPL_BUILD */
    207 
    208 /*
    209  * Set a new environment variable,
    210  * or replace or delete an existing one.
    211  */
    212 static int _do_env_set(int flag, int argc, char * const argv[], int env_flag)
    213 {
    214 	int   i, len;
    215 	char  *name, *value, *s;
    216 	ENTRY e, *ep;
    217 
    218 	debug("Initial value for argc=%d\n", argc);
    219 	while (argc > 1 && **(argv + 1) == '-') {
    220 		char *arg = *++argv;
    221 
    222 		--argc;
    223 		while (*++arg) {
    224 			switch (*arg) {
    225 			case 'f':		/* force */
    226 				env_flag |= H_FORCE;
    227 				break;
    228 			default:
    229 				return CMD_RET_USAGE;
    230 			}
    231 		}
    232 	}
    233 	debug("Final value for argc=%d\n", argc);
    234 	name = argv[1];
    235 
    236 	if (strchr(name, '=')) {
    237 		printf("## Error: illegal character '='"
    238 		       "in variable name \"%s\"\n", name);
    239 		return 1;
    240 	}
    241 
    242 	env_id++;
    243 
    244 	/* Delete only ? */
    245 	if (argc < 3 || argv[2] == NULL) {
    246 		int rc = hdelete_r(name, &env_htab, env_flag);
    247 		return !rc;
    248 	}
    249 
    250 	/*
    251 	 * Insert / replace new value
    252 	 */
    253 	for (i = 2, len = 0; i < argc; ++i)
    254 		len += strlen(argv[i]) + 1;
    255 
    256 	value = malloc(len);
    257 	if (value == NULL) {
    258 		printf("## Can't malloc %d bytes\n", len);
    259 		return 1;
    260 	}
    261 	for (i = 2, s = value; i < argc; ++i) {
    262 		char *v = argv[i];
    263 
    264 		while ((*s++ = *v++) != '\0')
    265 			;
    266 		*(s - 1) = ' ';
    267 	}
    268 	if (s != value)
    269 		*--s = '\0';
    270 
    271 	e.key	= name;
    272 	e.data	= value;
    273 	hsearch_r(e, ENTER, &ep, &env_htab, env_flag);
    274 	free(value);
    275 	if (!ep) {
    276 		printf("## Error inserting \"%s\" variable, errno=%d\n",
    277 			name, errno);
    278 		return 1;
    279 	}
    280 
    281 	return 0;
    282 }
    283 
    284 int env_set(const char *varname, const char *varvalue)
    285 {
    286 	const char * const argv[4] = { "setenv", varname, varvalue, NULL };
    287 
    288 	/* before import into hashtable */
    289 	if (!(gd->flags & GD_FLG_ENV_READY))
    290 		return 1;
    291 
    292 	if (varvalue == NULL || varvalue[0] == '\0')
    293 		return _do_env_set(0, 2, (char * const *)argv, H_PROGRAMMATIC);
    294 	else
    295 		return _do_env_set(0, 3, (char * const *)argv, H_PROGRAMMATIC);
    296 }
    297 
    298 /**
    299  * Set an environment variable to an integer value
    300  *
    301  * @param varname	Environment variable to set
    302  * @param value		Value to set it to
    303  * @return 0 if ok, 1 on error
    304  */
    305 int env_set_ulong(const char *varname, ulong value)
    306 {
    307 	/* TODO: this should be unsigned */
    308 	char *str = simple_itoa(value);
    309 
    310 	return env_set(varname, str);
    311 }
    312 
    313 /**
    314  * Set an environment variable to an value in hex
    315  *
    316  * @param varname	Environment variable to set
    317  * @param value		Value to set it to
    318  * @return 0 if ok, 1 on error
    319  */
    320 int env_set_hex(const char *varname, ulong value)
    321 {
    322 	char str[17];
    323 
    324 	sprintf(str, "%lx", value);
    325 	return env_set(varname, str);
    326 }
    327 
    328 ulong env_get_hex(const char *varname, ulong default_val)
    329 {
    330 	const char *s;
    331 	ulong value;
    332 	char *endp;
    333 
    334 	s = env_get(varname);
    335 	if (s)
    336 		value = simple_strtoul(s, &endp, 16);
    337 	if (!s || endp == s)
    338 		return default_val;
    339 
    340 	return value;
    341 }
    342 
    343 void eth_parse_enetaddr(const char *addr, uint8_t *enetaddr)
    344 {
    345 	char *end;
    346 	int i;
    347 
    348 	for (i = 0; i < 6; ++i) {
    349 		enetaddr[i] = addr ? simple_strtoul(addr, &end, 16) : 0;
    350 		if (addr)
    351 			addr = (*end) ? end + 1 : end;
    352 	}
    353 }
    354 
    355 int eth_env_get_enetaddr(const char *name, uint8_t *enetaddr)
    356 {
    357 	eth_parse_enetaddr(env_get(name), enetaddr);
    358 	return is_valid_ethaddr(enetaddr);
    359 }
    360 
    361 int eth_env_set_enetaddr(const char *name, const uint8_t *enetaddr)
    362 {
    363 	char buf[ARP_HLEN_ASCII + 1];
    364 
    365 	if (eth_env_get_enetaddr(name, (uint8_t *)buf))
    366 		return -EEXIST;
    367 
    368 	sprintf(buf, "%pM", enetaddr);
    369 
    370 	return env_set(name, buf);
    371 }
    372 
    373 #ifndef CONFIG_SPL_BUILD
    374 static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
    375 {
    376 	if (argc < 2)
    377 		return CMD_RET_USAGE;
    378 
    379 	return _do_env_set(flag, argc, argv, H_INTERACTIVE);
    380 }
    381 
    382 /*
    383  * Prompt for environment variable
    384  */
    385 #if defined(CONFIG_CMD_ASKENV)
    386 int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
    387 {
    388 	char message[CONFIG_SYS_CBSIZE];
    389 	int i, len, pos, size;
    390 	char *local_args[4];
    391 	char *endptr;
    392 
    393 	local_args[0] = argv[0];
    394 	local_args[1] = argv[1];
    395 	local_args[2] = NULL;
    396 	local_args[3] = NULL;
    397 
    398 	/*
    399 	 * Check the syntax:
    400 	 *
    401 	 * env_ask envname [message1 ...] [size]
    402 	 */
    403 	if (argc == 1)
    404 		return CMD_RET_USAGE;
    405 
    406 	/*
    407 	 * We test the last argument if it can be converted
    408 	 * into a decimal number.  If yes, we assume it's
    409 	 * the size.  Otherwise we echo it as part of the
    410 	 * message.
    411 	 */
    412 	i = simple_strtoul(argv[argc - 1], &endptr, 10);
    413 	if (*endptr != '\0') {			/* no size */
    414 		size = CONFIG_SYS_CBSIZE - 1;
    415 	} else {				/* size given */
    416 		size = i;
    417 		--argc;
    418 	}
    419 
    420 	if (argc <= 2) {
    421 		sprintf(message, "Please enter '%s': ", argv[1]);
    422 	} else {
    423 		/* env_ask envname message1 ... messagen [size] */
    424 		for (i = 2, pos = 0; i < argc && pos+1 < sizeof(message); i++) {
    425 			if (pos)
    426 				message[pos++] = ' ';
    427 
    428 			strncpy(message + pos, argv[i], sizeof(message) - pos);
    429 			pos += strlen(argv[i]);
    430 		}
    431 		if (pos < sizeof(message) - 1) {
    432 			message[pos++] = ' ';
    433 			message[pos] = '\0';
    434 		} else
    435 			message[CONFIG_SYS_CBSIZE - 1] = '\0';
    436 	}
    437 
    438 	if (size >= CONFIG_SYS_CBSIZE)
    439 		size = CONFIG_SYS_CBSIZE - 1;
    440 
    441 	if (size <= 0)
    442 		return 1;
    443 
    444 	/* prompt for input */
    445 	len = cli_readline(message);
    446 
    447 	if (size < len)
    448 		console_buffer[size] = '\0';
    449 
    450 	len = 2;
    451 	if (console_buffer[0] != '\0') {
    452 		local_args[2] = console_buffer;
    453 		len = 3;
    454 	}
    455 
    456 	/* Continue calling setenv code */
    457 	return _do_env_set(flag, len, local_args, H_INTERACTIVE);
    458 }
    459 #endif
    460 
    461 #if defined(CONFIG_CMD_ENV_CALLBACK)
    462 static int print_static_binding(const char *var_name, const char *callback_name,
    463 				void *priv)
    464 {
    465 	printf("\t%-20s %-20s\n", var_name, callback_name);
    466 
    467 	return 0;
    468 }
    469 
    470 static int print_active_callback(ENTRY *entry)
    471 {
    472 	struct env_clbk_tbl *clbkp;
    473 	int i;
    474 	int num_callbacks;
    475 
    476 	if (entry->callback == NULL)
    477 		return 0;
    478 
    479 	/* look up the callback in the linker-list */
    480 	num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
    481 	for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
    482 	     i < num_callbacks;
    483 	     i++, clbkp++) {
    484 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
    485 		if (entry->callback == clbkp->callback + gd->reloc_off)
    486 #else
    487 		if (entry->callback == clbkp->callback)
    488 #endif
    489 			break;
    490 	}
    491 
    492 	if (i == num_callbacks)
    493 		/* this should probably never happen, but just in case... */
    494 		printf("\t%-20s %p\n", entry->key, entry->callback);
    495 	else
    496 		printf("\t%-20s %-20s\n", entry->key, clbkp->name);
    497 
    498 	return 0;
    499 }
    500 
    501 /*
    502  * Print the callbacks available and what they are bound to
    503  */
    504 int do_env_callback(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
    505 {
    506 	struct env_clbk_tbl *clbkp;
    507 	int i;
    508 	int num_callbacks;
    509 
    510 	/* Print the available callbacks */
    511 	puts("Available callbacks:\n");
    512 	puts("\tCallback Name\n");
    513 	puts("\t-------------\n");
    514 	num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
    515 	for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
    516 	     i < num_callbacks;
    517 	     i++, clbkp++)
    518 		printf("\t%s\n", clbkp->name);
    519 	puts("\n");
    520 
    521 	/* Print the static bindings that may exist */
    522 	puts("Static callback bindings:\n");
    523 	printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
    524 	printf("\t%-20s %-20s\n", "-------------", "-------------");
    525 	env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding, NULL);
    526 	puts("\n");
    527 
    528 	/* walk through each variable and print the callback if it has one */
    529 	puts("Active callback bindings:\n");
    530 	printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
    531 	printf("\t%-20s %-20s\n", "-------------", "-------------");
    532 	hwalk_r(&env_htab, print_active_callback);
    533 	return 0;
    534 }
    535 #endif
    536 
    537 #if defined(CONFIG_CMD_ENV_FLAGS)
    538 static int print_static_flags(const char *var_name, const char *flags,
    539 			      void *priv)
    540 {
    541 	enum env_flags_vartype type = env_flags_parse_vartype(flags);
    542 	enum env_flags_varaccess access = env_flags_parse_varaccess(flags);
    543 
    544 	printf("\t%-20s %-20s %-20s\n", var_name,
    545 		env_flags_get_vartype_name(type),
    546 		env_flags_get_varaccess_name(access));
    547 
    548 	return 0;
    549 }
    550 
    551 static int print_active_flags(ENTRY *entry)
    552 {
    553 	enum env_flags_vartype type;
    554 	enum env_flags_varaccess access;
    555 
    556 	if (entry->flags == 0)
    557 		return 0;
    558 
    559 	type = (enum env_flags_vartype)
    560 		(entry->flags & ENV_FLAGS_VARTYPE_BIN_MASK);
    561 	access = env_flags_parse_varaccess_from_binflags(entry->flags);
    562 	printf("\t%-20s %-20s %-20s\n", entry->key,
    563 		env_flags_get_vartype_name(type),
    564 		env_flags_get_varaccess_name(access));
    565 
    566 	return 0;
    567 }
    568 
    569 /*
    570  * Print the flags available and what variables have flags
    571  */
    572 int do_env_flags(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
    573 {
    574 	/* Print the available variable types */
    575 	printf("Available variable type flags (position %d):\n",
    576 		ENV_FLAGS_VARTYPE_LOC);
    577 	puts("\tFlag\tVariable Type Name\n");
    578 	puts("\t----\t------------------\n");
    579 	env_flags_print_vartypes();
    580 	puts("\n");
    581 
    582 	/* Print the available variable access types */
    583 	printf("Available variable access flags (position %d):\n",
    584 		ENV_FLAGS_VARACCESS_LOC);
    585 	puts("\tFlag\tVariable Access Name\n");
    586 	puts("\t----\t--------------------\n");
    587 	env_flags_print_varaccess();
    588 	puts("\n");
    589 
    590 	/* Print the static flags that may exist */
    591 	puts("Static flags:\n");
    592 	printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
    593 		"Variable Access");
    594 	printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
    595 		"---------------");
    596 	env_attr_walk(ENV_FLAGS_LIST_STATIC, print_static_flags, NULL);
    597 	puts("\n");
    598 
    599 	/* walk through each variable and print the flags if non-default */
    600 	puts("Active flags:\n");
    601 	printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
    602 		"Variable Access");
    603 	printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
    604 		"---------------");
    605 	hwalk_r(&env_htab, print_active_flags);
    606 	return 0;
    607 }
    608 #endif
    609 
    610 /*
    611  * Interactively edit an environment variable
    612  */
    613 #if defined(CONFIG_CMD_EDITENV)
    614 static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc,
    615 		       char * const argv[])
    616 {
    617 	char buffer[CONFIG_SYS_CBSIZE];
    618 	char *init_val;
    619 
    620 	if (argc < 2)
    621 		return CMD_RET_USAGE;
    622 
    623 	/* before import into hashtable */
    624 	if (!(gd->flags & GD_FLG_ENV_READY))
    625 		return 1;
    626 
    627 	/* Set read buffer to initial value or empty sting */
    628 	init_val = env_get(argv[1]);
    629 	if (init_val)
    630 		snprintf(buffer, CONFIG_SYS_CBSIZE, "%s", init_val);
    631 	else
    632 		buffer[0] = '\0';
    633 
    634 	if (cli_readline_into_buffer("edit: ", buffer, 0) < 0)
    635 		return 1;
    636 
    637 	if (buffer[0] == '\0') {
    638 		const char * const _argv[3] = { "setenv", argv[1], NULL };
    639 
    640 		return _do_env_set(0, 2, (char * const *)_argv, H_INTERACTIVE);
    641 	} else {
    642 		const char * const _argv[4] = { "setenv", argv[1], buffer,
    643 			NULL };
    644 
    645 		return _do_env_set(0, 3, (char * const *)_argv, H_INTERACTIVE);
    646 	}
    647 }
    648 #endif /* CONFIG_CMD_EDITENV */
    649 #endif /* CONFIG_SPL_BUILD */
    650 
    651 /*
    652  * Look up variable from environment,
    653  * return address of storage for that variable,
    654  * or NULL if not found
    655  */
    656 char *env_get(const char *name)
    657 {
    658 	if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
    659 		ENTRY e, *ep;
    660 
    661 		WATCHDOG_RESET();
    662 
    663 		e.key	= name;
    664 		e.data	= NULL;
    665 		hsearch_r(e, FIND, &ep, &env_htab, 0);
    666 
    667 		return ep ? ep->data : NULL;
    668 	}
    669 
    670 	/* restricted capabilities before import */
    671 	if (env_get_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0)
    672 		return (char *)(gd->env_buf);
    673 
    674 	return NULL;
    675 }
    676 
    677 /*
    678  * Look up variable from environment for restricted C runtime env.
    679  */
    680 int env_get_f(const char *name, char *buf, unsigned len)
    681 {
    682 	int i, nxt, c;
    683 
    684 	for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
    685 		int val, n;
    686 
    687 		for (nxt = i; (c = env_get_char(nxt)) != '\0'; ++nxt) {
    688 			if (c < 0)
    689 				return c;
    690 			if (nxt >= CONFIG_ENV_SIZE)
    691 				return -1;
    692 		}
    693 
    694 		val = envmatch((uchar *)name, i);
    695 		if (val < 0)
    696 			continue;
    697 
    698 		/* found; copy out */
    699 		for (n = 0; n < len; ++n, ++buf) {
    700 			c = env_get_char(val++);
    701 			if (c < 0)
    702 				return c;
    703 			*buf = c;
    704 			if (*buf == '\0')
    705 				return n;
    706 		}
    707 
    708 		if (n)
    709 			*--buf = '\0';
    710 
    711 		printf("env_buf [%d bytes] too small for value of \"%s\"\n",
    712 			len, name);
    713 
    714 		return n;
    715 	}
    716 
    717 	return -1;
    718 }
    719 
    720 /**
    721  * Decode the integer value of an environment variable and return it.
    722  *
    723  * @param name		Name of environment variable
    724  * @param base		Number base to use (normally 10, or 16 for hex)
    725  * @param default_val	Default value to return if the variable is not
    726  *			found
    727  * @return the decoded value, or default_val if not found
    728  */
    729 ulong env_get_ulong(const char *name, int base, ulong default_val)
    730 {
    731 	/*
    732 	 * We can use env_get() here, even before relocation, since the
    733 	 * environment variable value is an integer and thus short.
    734 	 */
    735 	const char *str = env_get(name);
    736 
    737 	return str ? simple_strtoul(str, NULL, base) : default_val;
    738 }
    739 
    740 #ifndef CONFIG_SPL_BUILD
    741 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
    742 static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc,
    743 		       char * const argv[])
    744 {
    745 	return env_save() ? 1 : 0;
    746 }
    747 
    748 U_BOOT_CMD(
    749 	saveenv, 1, 0,	do_env_save,
    750 	"save environment variables to persistent storage",
    751 	""
    752 );
    753 #endif
    754 #endif /* CONFIG_SPL_BUILD */
    755 
    756 
    757 /*
    758  * Match a name / name=value pair
    759  *
    760  * s1 is either a simple 'name', or a 'name=value' pair.
    761  * i2 is the environment index for a 'name2=value2' pair.
    762  * If the names match, return the index for the value2, else -1.
    763  */
    764 int envmatch(uchar *s1, int i2)
    765 {
    766 	if (s1 == NULL)
    767 		return -1;
    768 
    769 	while (*s1 == env_get_char(i2++))
    770 		if (*s1++ == '=')
    771 			return i2;
    772 
    773 	if (*s1 == '\0' && env_get_char(i2-1) == '=')
    774 		return i2;
    775 
    776 	return -1;
    777 }
    778 
    779 #ifndef CONFIG_SPL_BUILD
    780 static int do_env_default(cmd_tbl_t *cmdtp, int __flag,
    781 			  int argc, char * const argv[])
    782 {
    783 	int all = 0, flag = 0;
    784 
    785 	debug("Initial value for argc=%d\n", argc);
    786 	while (--argc > 0 && **++argv == '-') {
    787 		char *arg = *argv;
    788 
    789 		while (*++arg) {
    790 			switch (*arg) {
    791 			case 'a':		/* default all */
    792 				all = 1;
    793 				break;
    794 			case 'f':		/* force */
    795 				flag |= H_FORCE;
    796 				break;
    797 			default:
    798 				return cmd_usage(cmdtp);
    799 			}
    800 		}
    801 	}
    802 	debug("Final value for argc=%d\n", argc);
    803 	if (all && (argc == 0)) {
    804 		/* Reset the whole environment */
    805 		set_default_env("## Resetting to default environment\n");
    806 		return 0;
    807 	}
    808 	if (!all && (argc > 0)) {
    809 		/* Reset individual variables */
    810 		set_default_vars(argc, argv);
    811 		return 0;
    812 	}
    813 
    814 	return cmd_usage(cmdtp);
    815 }
    816 
    817 static int do_env_delete(cmd_tbl_t *cmdtp, int flag,
    818 			 int argc, char * const argv[])
    819 {
    820 	int env_flag = H_INTERACTIVE;
    821 	int ret = 0;
    822 
    823 	debug("Initial value for argc=%d\n", argc);
    824 	while (argc > 1 && **(argv + 1) == '-') {
    825 		char *arg = *++argv;
    826 
    827 		--argc;
    828 		while (*++arg) {
    829 			switch (*arg) {
    830 			case 'f':		/* force */
    831 				env_flag |= H_FORCE;
    832 				break;
    833 			default:
    834 				return CMD_RET_USAGE;
    835 			}
    836 		}
    837 	}
    838 	debug("Final value for argc=%d\n", argc);
    839 
    840 	env_id++;
    841 
    842 	while (--argc > 0) {
    843 		char *name = *++argv;
    844 
    845 		if (!hdelete_r(name, &env_htab, env_flag))
    846 			ret = 1;
    847 	}
    848 
    849 	return ret;
    850 }
    851 
    852 #ifdef CONFIG_CMD_EXPORTENV
    853 /*
    854  * env export [-t | -b | -c] [-s size] addr [var ...]
    855  *	-t:	export as text format; if size is given, data will be
    856  *		padded with '\0' bytes; if not, one terminating '\0'
    857  *		will be added (which is included in the "filesize"
    858  *		setting so you can for exmple copy this to flash and
    859  *		keep the termination).
    860  *	-b:	export as binary format (name=value pairs separated by
    861  *		'\0', list end marked by double "\0\0")
    862  *	-c:	export as checksum protected environment format as
    863  *		used for example by "saveenv" command
    864  *	-s size:
    865  *		size of output buffer
    866  *	addr:	memory address where environment gets stored
    867  *	var...	List of variable names that get included into the
    868  *		export. Without arguments, the whole environment gets
    869  *		exported.
    870  *
    871  * With "-c" and size is NOT given, then the export command will
    872  * format the data as currently used for the persistent storage,
    873  * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
    874  * prepend a valid CRC32 checksum and, in case of redundant
    875  * environment, a "current" redundancy flag. If size is given, this
    876  * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
    877  * checksum and redundancy flag will be inserted.
    878  *
    879  * With "-b" and "-t", always only the real data (including a
    880  * terminating '\0' byte) will be written; here the optional size
    881  * argument will be used to make sure not to overflow the user
    882  * provided buffer; the command will abort if the size is not
    883  * sufficient. Any remaining space will be '\0' padded.
    884  *
    885  * On successful return, the variable "filesize" will be set.
    886  * Note that filesize includes the trailing/terminating '\0' byte(s).
    887  *
    888  * Usage scenario:  create a text snapshot/backup of the current settings:
    889  *
    890  *	=> env export -t 100000
    891  *	=> era ${backup_addr} +${filesize}
    892  *	=> cp.b 100000 ${backup_addr} ${filesize}
    893  *
    894  * Re-import this snapshot, deleting all other settings:
    895  *
    896  *	=> env import -d -t ${backup_addr}
    897  */
    898 static int do_env_export(cmd_tbl_t *cmdtp, int flag,
    899 			 int argc, char * const argv[])
    900 {
    901 	char	buf[32];
    902 	ulong	addr;
    903 	char	*ptr, *cmd, *res;
    904 	size_t	size = 0;
    905 	ssize_t	len;
    906 	env_t	*envp;
    907 	char	sep = '\n';
    908 	int	chk = 0;
    909 	int	fmt = 0;
    910 
    911 	cmd = *argv;
    912 
    913 	while (--argc > 0 && **++argv == '-') {
    914 		char *arg = *argv;
    915 		while (*++arg) {
    916 			switch (*arg) {
    917 			case 'b':		/* raw binary format */
    918 				if (fmt++)
    919 					goto sep_err;
    920 				sep = '\0';
    921 				break;
    922 			case 'c':		/* external checksum format */
    923 				if (fmt++)
    924 					goto sep_err;
    925 				sep = '\0';
    926 				chk = 1;
    927 				break;
    928 			case 's':		/* size given */
    929 				if (--argc <= 0)
    930 					return cmd_usage(cmdtp);
    931 				size = simple_strtoul(*++argv, NULL, 16);
    932 				goto NXTARG;
    933 			case 't':		/* text format */
    934 				if (fmt++)
    935 					goto sep_err;
    936 				sep = '\n';
    937 				break;
    938 			default:
    939 				return CMD_RET_USAGE;
    940 			}
    941 		}
    942 NXTARG:		;
    943 	}
    944 
    945 	if (argc < 1)
    946 		return CMD_RET_USAGE;
    947 
    948 	addr = simple_strtoul(argv[0], NULL, 16);
    949 	ptr = map_sysmem(addr, size);
    950 
    951 	if (size)
    952 		memset(ptr, '\0', size);
    953 
    954 	argc--;
    955 	argv++;
    956 
    957 	if (sep) {		/* export as text file */
    958 		len = hexport_r(&env_htab, sep,
    959 				H_MATCH_KEY | H_MATCH_IDENT,
    960 				&ptr, size, argc, argv);
    961 		if (len < 0) {
    962 			pr_err("Cannot export environment: errno = %d\n", errno);
    963 			return 1;
    964 		}
    965 		sprintf(buf, "%zX", (size_t)len);
    966 		env_set("filesize", buf);
    967 
    968 		return 0;
    969 	}
    970 
    971 	envp = (env_t *)ptr;
    972 
    973 	if (chk)		/* export as checksum protected block */
    974 		res = (char *)envp->data;
    975 	else			/* export as raw binary data */
    976 		res = ptr;
    977 
    978 	len = hexport_r(&env_htab, '\0',
    979 			H_MATCH_KEY | H_MATCH_IDENT,
    980 			&res, ENV_SIZE, argc, argv);
    981 	if (len < 0) {
    982 		pr_err("Cannot export environment: errno = %d\n", errno);
    983 		return 1;
    984 	}
    985 
    986 	if (chk) {
    987 		envp->crc = crc32(0, envp->data, ENV_SIZE);
    988 #ifdef CONFIG_ENV_ADDR_REDUND
    989 		envp->flags = ACTIVE_FLAG;
    990 #endif
    991 	}
    992 	env_set_hex("filesize", len + offsetof(env_t, data));
    993 
    994 	return 0;
    995 
    996 sep_err:
    997 	printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",	cmd);
    998 	return 1;
    999 }
   1000 #endif
   1001 
   1002 #ifdef CONFIG_CMD_IMPORTENV
   1003 /*
   1004  * env import [-d] [-t [-r] | -b | -c] addr [size]
   1005  *	-d:	delete existing environment before importing;
   1006  *		otherwise overwrite / append to existing definitions
   1007  *	-t:	assume text format; either "size" must be given or the
   1008  *		text data must be '\0' terminated
   1009  *	-r:	handle CRLF like LF, that means exported variables with
   1010  *		a content which ends with \r won't get imported. Used
   1011  *		to import text files created with editors which are using CRLF
   1012  *		for line endings. Only effective in addition to -t.
   1013  *	-b:	assume binary format ('\0' separated, "\0\0" terminated)
   1014  *	-c:	assume checksum protected environment format
   1015  *	addr:	memory address to read from
   1016  *	size:	length of input data; if missing, proper '\0'
   1017  *		termination is mandatory
   1018  */
   1019 static int do_env_import(cmd_tbl_t *cmdtp, int flag,
   1020 			 int argc, char * const argv[])
   1021 {
   1022 	ulong	addr;
   1023 	char	*cmd, *ptr;
   1024 	char	sep = '\n';
   1025 	int	chk = 0;
   1026 	int	fmt = 0;
   1027 	int	del = 0;
   1028 	int	crlf_is_lf = 0;
   1029 	size_t	size;
   1030 
   1031 	cmd = *argv;
   1032 
   1033 	while (--argc > 0 && **++argv == '-') {
   1034 		char *arg = *argv;
   1035 		while (*++arg) {
   1036 			switch (*arg) {
   1037 			case 'b':		/* raw binary format */
   1038 				if (fmt++)
   1039 					goto sep_err;
   1040 				sep = '\0';
   1041 				break;
   1042 			case 'c':		/* external checksum format */
   1043 				if (fmt++)
   1044 					goto sep_err;
   1045 				sep = '\0';
   1046 				chk = 1;
   1047 				break;
   1048 			case 't':		/* text format */
   1049 				if (fmt++)
   1050 					goto sep_err;
   1051 				sep = '\n';
   1052 				break;
   1053 			case 'r':		/* handle CRLF like LF */
   1054 				crlf_is_lf = 1;
   1055 				break;
   1056 			case 'd':
   1057 				del = 1;
   1058 				break;
   1059 			default:
   1060 				return CMD_RET_USAGE;
   1061 			}
   1062 		}
   1063 	}
   1064 
   1065 	if (argc < 1)
   1066 		return CMD_RET_USAGE;
   1067 
   1068 	if (!fmt)
   1069 		printf("## Warning: defaulting to text format\n");
   1070 
   1071 	if (sep != '\n' && crlf_is_lf )
   1072 		crlf_is_lf = 0;
   1073 
   1074 	addr = simple_strtoul(argv[0], NULL, 16);
   1075 	ptr = map_sysmem(addr, 0);
   1076 
   1077 	if (argc == 2) {
   1078 		size = simple_strtoul(argv[1], NULL, 16);
   1079 	} else if (argc == 1 && chk) {
   1080 		puts("## Error: external checksum format must pass size\n");
   1081 		return CMD_RET_FAILURE;
   1082 	} else {
   1083 		char *s = ptr;
   1084 
   1085 		size = 0;
   1086 
   1087 		while (size < MAX_ENV_SIZE) {
   1088 			if ((*s == sep) && (*(s+1) == '\0'))
   1089 				break;
   1090 			++s;
   1091 			++size;
   1092 		}
   1093 		if (size == MAX_ENV_SIZE) {
   1094 			printf("## Warning: Input data exceeds %d bytes"
   1095 				" - truncated\n", MAX_ENV_SIZE);
   1096 		}
   1097 		size += 2;
   1098 		printf("## Info: input data size = %zu = 0x%zX\n", size, size);
   1099 	}
   1100 
   1101 	if (chk) {
   1102 		uint32_t crc;
   1103 		env_t *ep = (env_t *)ptr;
   1104 
   1105 		size -= offsetof(env_t, data);
   1106 		memcpy(&crc, &ep->crc, sizeof(crc));
   1107 
   1108 		if (crc32(0, ep->data, size) != crc) {
   1109 			puts("## Error: bad CRC, import failed\n");
   1110 			return 1;
   1111 		}
   1112 		ptr = (char *)ep->data;
   1113 	}
   1114 
   1115 	if (himport_r(&env_htab, ptr, size, sep, del ? 0 : H_NOCLEAR,
   1116 			crlf_is_lf, 0, NULL) == 0) {
   1117 		pr_err("Environment import failed: errno = %d\n", errno);
   1118 		return 1;
   1119 	}
   1120 	gd->flags |= GD_FLG_ENV_READY;
   1121 
   1122 	return 0;
   1123 
   1124 sep_err:
   1125 	printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
   1126 		cmd);
   1127 	return 1;
   1128 }
   1129 #endif
   1130 
   1131 #if defined(CONFIG_CMD_ENV_EXISTS)
   1132 static int do_env_exists(cmd_tbl_t *cmdtp, int flag, int argc,
   1133 		       char * const argv[])
   1134 {
   1135 	ENTRY e, *ep;
   1136 
   1137 	if (argc < 2)
   1138 		return CMD_RET_USAGE;
   1139 
   1140 	e.key = argv[1];
   1141 	e.data = NULL;
   1142 	hsearch_r(e, FIND, &ep, &env_htab, 0);
   1143 
   1144 	return (ep == NULL) ? 1 : 0;
   1145 }
   1146 #endif
   1147 
   1148 /*
   1149  * New command line interface: "env" command with subcommands
   1150  */
   1151 static cmd_tbl_t cmd_env_sub[] = {
   1152 #if defined(CONFIG_CMD_ASKENV)
   1153 	U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
   1154 #endif
   1155 	U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
   1156 	U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""),
   1157 #if defined(CONFIG_CMD_EDITENV)
   1158 	U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
   1159 #endif
   1160 #if defined(CONFIG_CMD_ENV_CALLBACK)
   1161 	U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""),
   1162 #endif
   1163 #if defined(CONFIG_CMD_ENV_FLAGS)
   1164 	U_BOOT_CMD_MKENT(flags, 1, 0, do_env_flags, "", ""),
   1165 #endif
   1166 #if defined(CONFIG_CMD_EXPORTENV)
   1167 	U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
   1168 #endif
   1169 #if defined(CONFIG_CMD_GREPENV)
   1170 	U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
   1171 #endif
   1172 #if defined(CONFIG_CMD_IMPORTENV)
   1173 	U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
   1174 #endif
   1175 	U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
   1176 #if defined(CONFIG_CMD_RUN)
   1177 	U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
   1178 #endif
   1179 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
   1180 	U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""),
   1181 #endif
   1182 	U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""),
   1183 #if defined(CONFIG_CMD_ENV_EXISTS)
   1184 	U_BOOT_CMD_MKENT(exists, 2, 0, do_env_exists, "", ""),
   1185 #endif
   1186 };
   1187 
   1188 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
   1189 void env_reloc(void)
   1190 {
   1191 	fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
   1192 }
   1193 #endif
   1194 
   1195 static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
   1196 {
   1197 	cmd_tbl_t *cp;
   1198 
   1199 	if (argc < 2)
   1200 		return CMD_RET_USAGE;
   1201 
   1202 	/* drop initial "env" arg */
   1203 	argc--;
   1204 	argv++;
   1205 
   1206 	cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
   1207 
   1208 	if (cp)
   1209 		return cp->cmd(cmdtp, flag, argc, argv);
   1210 
   1211 	return CMD_RET_USAGE;
   1212 }
   1213 
   1214 #ifdef CONFIG_SYS_LONGHELP
   1215 static char env_help_text[] =
   1216 #if defined(CONFIG_CMD_ASKENV)
   1217 	"ask name [message] [size] - ask for environment variable\nenv "
   1218 #endif
   1219 #if defined(CONFIG_CMD_ENV_CALLBACK)
   1220 	"callbacks - print callbacks and their associated variables\nenv "
   1221 #endif
   1222 	"default [-f] -a - [forcibly] reset default environment\n"
   1223 	"env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
   1224 	"env delete [-f] var [...] - [forcibly] delete variable(s)\n"
   1225 #if defined(CONFIG_CMD_EDITENV)
   1226 	"env edit name - edit environment variable\n"
   1227 #endif
   1228 #if defined(CONFIG_CMD_ENV_EXISTS)
   1229 	"env exists name - tests for existence of variable\n"
   1230 #endif
   1231 #if defined(CONFIG_CMD_EXPORTENV)
   1232 	"env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
   1233 #endif
   1234 #if defined(CONFIG_CMD_ENV_FLAGS)
   1235 	"env flags - print variables that have non-default flags\n"
   1236 #endif
   1237 #if defined(CONFIG_CMD_GREPENV)
   1238 #ifdef CONFIG_REGEX
   1239 	"env grep [-e] [-n | -v | -b] string [...] - search environment\n"
   1240 #else
   1241 	"env grep [-n | -v | -b] string [...] - search environment\n"
   1242 #endif
   1243 #endif
   1244 #if defined(CONFIG_CMD_IMPORTENV)
   1245 	"env import [-d] [-t [-r] | -b | -c] addr [size] - import environment\n"
   1246 #endif
   1247 	"env print [-a | name ...] - print environment\n"
   1248 #if defined(CONFIG_CMD_RUN)
   1249 	"env run var [...] - run commands in an environment variable\n"
   1250 #endif
   1251 #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
   1252 	"env save - save environment\n"
   1253 #endif
   1254 	"env set [-f] name [arg ...]\n";
   1255 #endif
   1256 
   1257 U_BOOT_CMD(
   1258 	env, CONFIG_SYS_MAXARGS, 1, do_env,
   1259 	"environment handling commands", env_help_text
   1260 );
   1261 
   1262 /*
   1263  * Old command line interface, kept for compatibility
   1264  */
   1265 
   1266 #if defined(CONFIG_CMD_EDITENV)
   1267 U_BOOT_CMD_COMPLETE(
   1268 	editenv, 2, 0,	do_env_edit,
   1269 	"edit environment variable",
   1270 	"name\n"
   1271 	"    - edit environment variable 'name'",
   1272 	var_complete
   1273 );
   1274 #endif
   1275 
   1276 U_BOOT_CMD_COMPLETE(
   1277 	printenv, CONFIG_SYS_MAXARGS, 1,	do_env_print,
   1278 	"print environment variables",
   1279 	"[-a]\n    - print [all] values of all environment variables\n"
   1280 	"printenv name ...\n"
   1281 	"    - print value of environment variable 'name'",
   1282 	var_complete
   1283 );
   1284 
   1285 #ifdef CONFIG_CMD_GREPENV
   1286 U_BOOT_CMD_COMPLETE(
   1287 	grepenv, CONFIG_SYS_MAXARGS, 0,  do_env_grep,
   1288 	"search environment variables",
   1289 #ifdef CONFIG_REGEX
   1290 	"[-e] [-n | -v | -b] string ...\n"
   1291 #else
   1292 	"[-n | -v | -b] string ...\n"
   1293 #endif
   1294 	"    - list environment name=value pairs matching 'string'\n"
   1295 #ifdef CONFIG_REGEX
   1296 	"      \"-e\": enable regular expressions;\n"
   1297 #endif
   1298 	"      \"-n\": search variable names; \"-v\": search values;\n"
   1299 	"      \"-b\": search both names and values (default)",
   1300 	var_complete
   1301 );
   1302 #endif
   1303 
   1304 U_BOOT_CMD_COMPLETE(
   1305 	setenv, CONFIG_SYS_MAXARGS, 0,	do_env_set,
   1306 	"set environment variables",
   1307 	"[-f] name value ...\n"
   1308 	"    - [forcibly] set environment variable 'name' to 'value ...'\n"
   1309 	"setenv [-f] name\n"
   1310 	"    - [forcibly] delete environment variable 'name'",
   1311 	var_complete
   1312 );
   1313 
   1314 #if defined(CONFIG_CMD_ASKENV)
   1315 
   1316 U_BOOT_CMD(
   1317 	askenv,	CONFIG_SYS_MAXARGS,	1,	do_env_ask,
   1318 	"get environment variables from stdin",
   1319 	"name [message] [size]\n"
   1320 	"    - get environment variable 'name' from stdin (max 'size' chars)"
   1321 );
   1322 #endif
   1323 
   1324 #if defined(CONFIG_CMD_RUN)
   1325 U_BOOT_CMD_COMPLETE(
   1326 	run,	CONFIG_SYS_MAXARGS,	1,	do_run,
   1327 	"run commands in an environment variable",
   1328 	"var [...]\n"
   1329 	"    - run the commands in the environment variable(s) 'var'",
   1330 	var_complete
   1331 );
   1332 #endif
   1333 #endif /* CONFIG_SPL_BUILD */
   1334