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a68d3ed0 1/*
ea009d47 2 * (C) Copyright 2000-2013
a68d3ed0
WD
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>
a000b795
KP
7 *
8 * Copyright 2011 Freescale Semiconductor, Inc.
9 *
3765b3e7 10 * SPDX-License-Identifier: GPL-2.0+
a68d3ed0
WD
11 */
12
ea882baf 13/*
a68d3ed0
WD
14 * Support for persistent environment data
15 *
ea882baf
WD
16 * The "environment" is stored on external storage as a list of '\0'
17 * terminated "name=value" strings. The end of the list is marked by
18 * a double '\0'. The environment is preceeded by a 32 bit CRC over
19 * the data part and, in case of redundant environment, a byte of
20 * flags.
a68d3ed0 21 *
ea882baf
WD
22 * This linearized representation will also be used before
23 * relocation, i. e. as long as we don't have a full C runtime
24 * environment. After that, we use a hash table.
a68d3ed0
WD
25 */
26
27#include <common.h>
18d66533 28#include <cli.h>
a68d3ed0 29#include <command.h>
24b852a7 30#include <console.h>
a68d3ed0 31#include <environment.h>
ea882baf
WD
32#include <search.h>
33#include <errno.h>
246c6922 34#include <malloc.h>
0eb25b61 35#include <mapmem.h>
2a3cb020 36#include <watchdog.h>
a68d3ed0
WD
37#include <linux/stddef.h>
38#include <asm/byteorder.h>
fd37dac9 39#include <asm/io.h>
a68d3ed0 40
d87080b7
WD
41DECLARE_GLOBAL_DATA_PTR;
42
f3c615b8
ML
43#if !defined(CONFIG_ENV_IS_IN_EEPROM) && \
44 !defined(CONFIG_ENV_IS_IN_FLASH) && \
45 !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \
f3c615b8 46 !defined(CONFIG_ENV_IS_IN_MMC) && \
57210c7c 47 !defined(CONFIG_ENV_IS_IN_FAT) && \
f3c615b8
ML
48 !defined(CONFIG_ENV_IS_IN_NAND) && \
49 !defined(CONFIG_ENV_IS_IN_NVRAM) && \
50 !defined(CONFIG_ENV_IS_IN_ONENAND) && \
51 !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \
0a85a9e7 52 !defined(CONFIG_ENV_IS_IN_REMOTE) && \
2b74433f 53 !defined(CONFIG_ENV_IS_IN_UBI) && \
f3c615b8 54 !defined(CONFIG_ENV_IS_NOWHERE)
75eb82ec 55# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\
2b74433f 56SPI_FLASH|NVRAM|MMC|FAT|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE
a68d3ed0
WD
57#endif
58
ea882baf
WD
59/*
60 * Maximum expected input data size for import command
61 */
62#define MAX_ENV_SIZE (1 << 20) /* 1 MiB */
a68d3ed0 63
da95427c 64/*
ea882baf 65 * This variable is incremented on each do_env_set(), so it can
da95427c
HS
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 */
2f70c49e 71static int env_id = 1;
a68d3ed0 72
f3c615b8 73int get_env_id(void)
2f70c49e
HS
74{
75 return env_id;
76}
a68d3ed0 77
7ac2fe2d 78#ifndef CONFIG_SPL_BUILD
4c94f6c5 79/*
ea882baf
WD
80 * Command interface: print one or all environment variables
81 *
82 * Returns 0 in case of error, or length of printed string
4c94f6c5 83 */
be11235a 84static int env_print(char *name, int flag)
a68d3ed0 85{
ea882baf 86 char *res = NULL;
22a4a6c5 87 ssize_t len;
ea882baf
WD
88
89 if (name) { /* print a single name */
90 ENTRY e, *ep;
91
92 e.key = name;
93 e.data = NULL;
be11235a 94 hsearch_r(e, FIND, &ep, &env_htab, flag);
ea882baf
WD
95 if (ep == NULL)
96 return 0;
f3c615b8 97 len = printf("%s=%s\n", ep->key, ep->data);
ea882baf
WD
98 return len;
99 }
a68d3ed0 100
ea882baf 101 /* print whole list */
be11235a 102 len = hexport_r(&env_htab, '\n', flag, &res, 0, 0, NULL);
a68d3ed0 103
ea882baf
WD
104 if (len > 0) {
105 puts(res);
106 free(res);
107 return len;
a68d3ed0
WD
108 }
109
ea882baf 110 /* should never happen */
22a4a6c5 111 printf("## Error: cannot export environment\n");
ea882baf 112 return 0;
4c94f6c5 113}
a68d3ed0 114
088f1b19
KP
115static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc,
116 char * const argv[])
4c94f6c5
MF
117{
118 int i;
119 int rcode = 0;
be11235a
JH
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 }
a68d3ed0 127
4c94f6c5
MF
128 if (argc == 1) {
129 /* print all env vars */
be11235a 130 rcode = env_print(NULL, env_flag);
ea882baf 131 if (!rcode)
4c94f6c5
MF
132 return 1;
133 printf("\nEnvironment size: %d/%ld bytes\n",
134 rcode, (ulong)ENV_SIZE);
135 return 0;
136 }
a68d3ed0 137
4c94f6c5 138 /* print selected env vars */
be11235a 139 env_flag &= ~H_HIDE_DOT;
4c94f6c5 140 for (i = 1; i < argc; ++i) {
be11235a 141 int rc = env_print(argv[i], env_flag);
ea882baf
WD
142 if (!rc) {
143 printf("## Error: \"%s\" not defined\n", argv[i]);
4c94f6c5 144 ++rcode;
a68d3ed0
WD
145 }
146 }
4c94f6c5 147
a68d3ed0
WD
148 return rcode;
149}
150
a000b795 151#ifdef CONFIG_CMD_GREPENV
d09b1787
IG
152static int do_env_grep(cmd_tbl_t *cmdtp, int flag,
153 int argc, char * const argv[])
a000b795 154{
5a31ea04 155 char *res = NULL;
be29df6a 156 int len, grep_how, grep_what;
a000b795
KP
157
158 if (argc < 2)
4c12eeb8 159 return CMD_RET_USAGE;
a000b795 160
be29df6a
WD
161 grep_how = H_MATCH_SUBSTR; /* default: substring search */
162 grep_what = H_MATCH_BOTH; /* default: grep names and values */
d87244d5 163
9a832331
PA
164 while (--argc > 0 && **++argv == '-') {
165 char *arg = *argv;
d87244d5
WD
166 while (*++arg) {
167 switch (*arg) {
be29df6a
WD
168#ifdef CONFIG_REGEX
169 case 'e': /* use regex matching */
170 grep_how = H_MATCH_REGEX;
171 break;
172#endif
d87244d5 173 case 'n': /* grep for name */
be29df6a 174 grep_what = H_MATCH_KEY;
d87244d5
WD
175 break;
176 case 'v': /* grep for value */
be29df6a 177 grep_what = H_MATCH_DATA;
d87244d5
WD
178 break;
179 case 'b': /* grep for both */
be29df6a 180 grep_what = H_MATCH_BOTH;
d87244d5
WD
181 break;
182 case '-':
183 goto DONE;
184 default:
185 return CMD_RET_USAGE;
186 }
187 }
188 }
189
190DONE:
5a31ea04 191 len = hexport_r(&env_htab, '\n',
be29df6a 192 flag | grep_what | grep_how,
5a31ea04 193 &res, 0, argc, argv);
a000b795 194
5a31ea04
WD
195 if (len > 0) {
196 puts(res);
197 free(res);
a000b795
KP
198 }
199
5a31ea04
WD
200 if (len < 2)
201 return 1;
202
203 return 0;
a000b795
KP
204}
205#endif
7ac2fe2d 206#endif /* CONFIG_SPL_BUILD */
a000b795 207
c3f65258
GF
208/*
209 * Set a new environment variable,
210 * or replace or delete an existing one.
2598090b 211 */
94b467b1 212static int _do_env_set(int flag, int argc, char * const argv[], int env_flag)
c3f65258
GF
213{
214 int i, len;
215 char *name, *value, *s;
216 ENTRY e, *ep;
217
24ab5a19
JH
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);
c3f65258
GF
234 name = argv[1];
235 value = argv[2];
236
237 if (strchr(name, '=')) {
238 printf("## Error: illegal character '='"
239 "in variable name \"%s\"\n", name);
240 return 1;
241 }
242
243 env_id++;
c3f65258 244
a68d3ed0 245 /* Delete only ? */
d09b1787 246 if (argc < 3 || argv[2] == NULL) {
24ab5a19 247 int rc = hdelete_r(name, &env_htab, env_flag);
ea882baf 248 return !rc;
a68d3ed0
WD
249 }
250
251 /*
ea882baf 252 * Insert / replace new value
a68d3ed0 253 */
f3c615b8 254 for (i = 2, len = 0; i < argc; ++i)
a68d3ed0 255 len += strlen(argv[i]) + 1;
f3c615b8
ML
256
257 value = malloc(len);
258 if (value == NULL) {
ea882baf 259 printf("## Can't malloc %d bytes\n", len);
a68d3ed0
WD
260 return 1;
261 }
f3c615b8 262 for (i = 2, s = value; i < argc; ++i) {
ea882baf 263 char *v = argv[i];
a68d3ed0 264
ea882baf 265 while ((*s++ = *v++) != '\0')
a68d3ed0 266 ;
d09b1787 267 *(s - 1) = ' ';
ea882baf
WD
268 }
269 if (s != value)
270 *--s = '\0';
271
d09b1787
IG
272 e.key = name;
273 e.data = value;
24ab5a19 274 hsearch_r(e, ENTER, &ep, &env_htab, env_flag);
ea882baf
WD
275 free(value);
276 if (!ep) {
277 printf("## Error inserting \"%s\" variable, errno=%d\n",
278 name, errno);
279 return 1;
a68d3ed0 280 }
a68d3ed0 281
a68d3ed0
WD
282 return 0;
283}
284
84b5e802 285int setenv(const char *varname, const char *varvalue)
a68d3ed0 286{
84b5e802
WD
287 const char * const argv[4] = { "setenv", varname, varvalue, NULL };
288
a7eb1d66
JH
289 /* before import into hashtable */
290 if (!(gd->flags & GD_FLG_ENV_READY))
291 return 1;
292
d09b1787 293 if (varvalue == NULL || varvalue[0] == '\0')
94b467b1 294 return _do_env_set(0, 2, (char * const *)argv, H_PROGRAMMATIC);
9ffd451a 295 else
94b467b1 296 return _do_env_set(0, 3, (char * const *)argv, H_PROGRAMMATIC);
a68d3ed0
WD
297}
298
d67f10ce
SG
299/**
300 * Set an environment variable to an integer value
301 *
9602286d 302 * @param varname Environment variable to set
d67f10ce
SG
303 * @param value Value to set it to
304 * @return 0 if ok, 1 on error
305 */
306int setenv_ulong(const char *varname, ulong value)
307{
308 /* TODO: this should be unsigned */
309 char *str = simple_itoa(value);
310
311 return setenv(varname, str);
312}
313
314/**
bfc59966 315 * Set an environment variable to an value in hex
d67f10ce 316 *
9602286d 317 * @param varname Environment variable to set
bfc59966 318 * @param value Value to set it to
d67f10ce
SG
319 * @return 0 if ok, 1 on error
320 */
bfc59966 321int setenv_hex(const char *varname, ulong value)
d67f10ce
SG
322{
323 char str[17];
324
bfc59966 325 sprintf(str, "%lx", value);
d67f10ce
SG
326 return setenv(varname, str);
327}
328
76b8f79c
SG
329ulong getenv_hex(const char *varname, ulong default_val)
330{
331 const char *s;
332 ulong value;
333 char *endp;
334
335 s = getenv(varname);
336 if (s)
337 value = simple_strtoul(s, &endp, 16);
338 if (!s || endp == s)
339 return default_val;
340
341 return value;
342}
343
7ac2fe2d 344#ifndef CONFIG_SPL_BUILD
088f1b19 345static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
a68d3ed0 346{
47e26b1b 347 if (argc < 2)
4c12eeb8 348 return CMD_RET_USAGE;
a68d3ed0 349
94b467b1 350 return _do_env_set(flag, argc, argv, H_INTERACTIVE);
a68d3ed0
WD
351}
352
ea882baf 353/*
a68d3ed0
WD
354 * Prompt for environment variable
355 */
c76fe474 356#if defined(CONFIG_CMD_ASKENV)
f3c615b8 357int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
a68d3ed0 358{
6d0f6bcf 359 char message[CONFIG_SYS_CBSIZE];
7d85591d 360 int i, len, pos, size;
a68d3ed0 361 char *local_args[4];
7d85591d 362 char *endptr;
a68d3ed0
WD
363
364 local_args[0] = argv[0];
365 local_args[1] = argv[1];
366 local_args[2] = NULL;
367 local_args[3] = NULL;
368
7d85591d
WD
369 /*
370 * Check the syntax:
371 *
372 * env_ask envname [message1 ...] [size]
373 */
374 if (argc == 1)
4c12eeb8 375 return CMD_RET_USAGE;
a68d3ed0 376
7d85591d
WD
377 /*
378 * We test the last argument if it can be converted
379 * into a decimal number. If yes, we assume it's
380 * the size. Otherwise we echo it as part of the
381 * message.
382 */
383 i = simple_strtoul(argv[argc - 1], &endptr, 10);
384 if (*endptr != '\0') { /* no size */
385 size = CONFIG_SYS_CBSIZE - 1;
386 } else { /* size given */
387 size = i;
388 --argc;
389 }
a68d3ed0 390
7d85591d
WD
391 if (argc <= 2) {
392 sprintf(message, "Please enter '%s': ", argv[1]);
393 } else {
394 /* env_ask envname message1 ... messagen [size] */
395 for (i = 2, pos = 0; i < argc; i++) {
f3c615b8 396 if (pos)
a68d3ed0 397 message[pos++] = ' ';
f3c615b8 398
d09b1787 399 strcpy(message + pos, argv[i]);
a68d3ed0
WD
400 pos += strlen(argv[i]);
401 }
7d85591d 402 message[pos++] = ' ';
a68d3ed0 403 message[pos] = '\0';
a68d3ed0
WD
404 }
405
6d0f6bcf
JCPV
406 if (size >= CONFIG_SYS_CBSIZE)
407 size = CONFIG_SYS_CBSIZE - 1;
a68d3ed0
WD
408
409 if (size <= 0)
410 return 1;
411
412 /* prompt for input */
e1bf824d 413 len = cli_readline(message);
a68d3ed0
WD
414
415 if (size < len)
416 console_buffer[size] = '\0';
417
418 len = 2;
419 if (console_buffer[0] != '\0') {
420 local_args[2] = console_buffer;
421 len = 3;
422 }
423
424 /* Continue calling setenv code */
94b467b1 425 return _do_env_set(flag, len, local_args, H_INTERACTIVE);
a68d3ed0 426}
90253178 427#endif
a68d3ed0 428
5e2b3e0c 429#if defined(CONFIG_CMD_ENV_CALLBACK)
cca98fd6
JH
430static int print_static_binding(const char *var_name, const char *callback_name,
431 void *priv)
5e2b3e0c
JH
432{
433 printf("\t%-20s %-20s\n", var_name, callback_name);
434
435 return 0;
436}
437
438static int print_active_callback(ENTRY *entry)
439{
440 struct env_clbk_tbl *clbkp;
441 int i;
442 int num_callbacks;
443
444 if (entry->callback == NULL)
445 return 0;
446
447 /* look up the callback in the linker-list */
448 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
449 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
450 i < num_callbacks;
451 i++, clbkp++) {
452#if defined(CONFIG_NEEDS_MANUAL_RELOC)
453 if (entry->callback == clbkp->callback + gd->reloc_off)
454#else
455 if (entry->callback == clbkp->callback)
456#endif
457 break;
458 }
459
460 if (i == num_callbacks)
461 /* this should probably never happen, but just in case... */
462 printf("\t%-20s %p\n", entry->key, entry->callback);
463 else
464 printf("\t%-20s %-20s\n", entry->key, clbkp->name);
465
466 return 0;
467}
468
469/*
470 * Print the callbacks available and what they are bound to
471 */
472int do_env_callback(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
473{
474 struct env_clbk_tbl *clbkp;
475 int i;
476 int num_callbacks;
477
478 /* Print the available callbacks */
479 puts("Available callbacks:\n");
480 puts("\tCallback Name\n");
481 puts("\t-------------\n");
482 num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk);
483 for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk);
484 i < num_callbacks;
485 i++, clbkp++)
486 printf("\t%s\n", clbkp->name);
487 puts("\n");
488
489 /* Print the static bindings that may exist */
490 puts("Static callback bindings:\n");
491 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
492 printf("\t%-20s %-20s\n", "-------------", "-------------");
cca98fd6 493 env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding, NULL);
5e2b3e0c
JH
494 puts("\n");
495
496 /* walk through each variable and print the callback if it has one */
497 puts("Active callback bindings:\n");
498 printf("\t%-20s %-20s\n", "Variable Name", "Callback Name");
499 printf("\t%-20s %-20s\n", "-------------", "-------------");
500 hwalk_r(&env_htab, print_active_callback);
501 return 0;
502}
503#endif
504
fffad71b 505#if defined(CONFIG_CMD_ENV_FLAGS)
cca98fd6
JH
506static int print_static_flags(const char *var_name, const char *flags,
507 void *priv)
fffad71b
JH
508{
509 enum env_flags_vartype type = env_flags_parse_vartype(flags);
267541f7 510 enum env_flags_varaccess access = env_flags_parse_varaccess(flags);
fffad71b 511
267541f7
JH
512 printf("\t%-20s %-20s %-20s\n", var_name,
513 env_flags_get_vartype_name(type),
514 env_flags_get_varaccess_name(access));
fffad71b
JH
515
516 return 0;
517}
518
519static int print_active_flags(ENTRY *entry)
520{
521 enum env_flags_vartype type;
267541f7 522 enum env_flags_varaccess access;
fffad71b
JH
523
524 if (entry->flags == 0)
525 return 0;
526
527 type = (enum env_flags_vartype)
528 (entry->flags & ENV_FLAGS_VARTYPE_BIN_MASK);
267541f7
JH
529 access = env_flags_parse_varaccess_from_binflags(entry->flags);
530 printf("\t%-20s %-20s %-20s\n", entry->key,
531 env_flags_get_vartype_name(type),
532 env_flags_get_varaccess_name(access));
fffad71b
JH
533
534 return 0;
535}
536
537/*
538 * Print the flags available and what variables have flags
539 */
540int do_env_flags(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
541{
542 /* Print the available variable types */
543 printf("Available variable type flags (position %d):\n",
544 ENV_FLAGS_VARTYPE_LOC);
545 puts("\tFlag\tVariable Type Name\n");
546 puts("\t----\t------------------\n");
547 env_flags_print_vartypes();
548 puts("\n");
549
267541f7
JH
550 /* Print the available variable access types */
551 printf("Available variable access flags (position %d):\n",
552 ENV_FLAGS_VARACCESS_LOC);
553 puts("\tFlag\tVariable Access Name\n");
554 puts("\t----\t--------------------\n");
555 env_flags_print_varaccess();
556 puts("\n");
557
fffad71b
JH
558 /* Print the static flags that may exist */
559 puts("Static flags:\n");
267541f7
JH
560 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
561 "Variable Access");
562 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
563 "---------------");
cca98fd6 564 env_attr_walk(ENV_FLAGS_LIST_STATIC, print_static_flags, NULL);
fffad71b
JH
565 puts("\n");
566
567 /* walk through each variable and print the flags if non-default */
568 puts("Active flags:\n");
267541f7
JH
569 printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type",
570 "Variable Access");
571 printf("\t%-20s %-20s %-20s\n", "-------------", "-------------",
572 "---------------");
fffad71b
JH
573 hwalk_r(&env_htab, print_active_flags);
574 return 0;
575}
576#endif
577
ea882baf 578/*
246c6922
PT
579 * Interactively edit an environment variable
580 */
581#if defined(CONFIG_CMD_EDITENV)
088f1b19
KP
582static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc,
583 char * const argv[])
246c6922
PT
584{
585 char buffer[CONFIG_SYS_CBSIZE];
586 char *init_val;
246c6922 587
47e26b1b 588 if (argc < 2)
4c12eeb8 589 return CMD_RET_USAGE;
246c6922 590
94b467b1
JH
591 /* before import into hashtable */
592 if (!(gd->flags & GD_FLG_ENV_READY))
593 return 1;
594
246c6922
PT
595 /* Set read buffer to initial value or empty sting */
596 init_val = getenv(argv[1]);
597 if (init_val)
7fcd9bbd 598 sprintf(buffer, "%s", init_val);
246c6922
PT
599 else
600 buffer[0] = '\0';
601
e1bf824d 602 if (cli_readline_into_buffer("edit: ", buffer, 0) < 0)
18a3cce9 603 return 1;
246c6922 604
94b467b1
JH
605 if (buffer[0] == '\0') {
606 const char * const _argv[3] = { "setenv", argv[1], NULL };
607
608 return _do_env_set(0, 2, (char * const *)_argv, H_INTERACTIVE);
609 } else {
610 const char * const _argv[4] = { "setenv", argv[1], buffer,
611 NULL };
612
613 return _do_env_set(0, 3, (char * const *)_argv, H_INTERACTIVE);
614 }
246c6922
PT
615}
616#endif /* CONFIG_CMD_EDITENV */
7ac2fe2d 617#endif /* CONFIG_SPL_BUILD */
246c6922 618
ea882baf 619/*
a68d3ed0
WD
620 * Look up variable from environment,
621 * return address of storage for that variable,
622 * or NULL if not found
623 */
84b5e802 624char *getenv(const char *name)
a68d3ed0 625{
d09b1787 626 if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */
ea882baf 627 ENTRY e, *ep;
a68d3ed0 628
91a76751 629 WATCHDOG_RESET();
2a3cb020 630
d09b1787
IG
631 e.key = name;
632 e.data = NULL;
c4e0057f 633 hsearch_r(e, FIND, &ep, &env_htab, 0);
91a76751 634
f3c615b8 635 return ep ? ep->data : NULL;
a68d3ed0
WD
636 }
637
ea882baf 638 /* restricted capabilities before import */
ea882baf
WD
639 if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0)
640 return (char *)(gd->env_buf);
91a76751 641
ea882baf 642 return NULL;
a68d3ed0
WD
643}
644
ea882baf
WD
645/*
646 * Look up variable from environment for restricted C runtime env.
647 */
84b5e802 648int getenv_f(const char *name, char *buf, unsigned len)
a68d3ed0
WD
649{
650 int i, nxt;
651
d09b1787 652 for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) {
a68d3ed0
WD
653 int val, n;
654
f3c615b8
ML
655 for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) {
656 if (nxt >= CONFIG_ENV_SIZE)
657 return -1;
a68d3ed0 658 }
f3c615b8
ML
659
660 val = envmatch((uchar *)name, i);
661 if (val < 0)
a68d3ed0 662 continue;
9ed4a958 663
a68d3ed0 664 /* found; copy out */
f3c615b8 665 for (n = 0; n < len; ++n, ++buf) {
d09b1787
IG
666 *buf = env_get_char(val++);
667 if (*buf == '\0')
9ed4a958
WD
668 return n;
669 }
670
671 if (n)
672 *--buf = '\0';
673
a02a884b
WD
674 printf("env_buf [%d bytes] too small for value of \"%s\"\n",
675 len, name);
9ed4a958
WD
676
677 return n;
a68d3ed0 678 }
d09b1787 679
f3c615b8 680 return -1;
a68d3ed0
WD
681}
682
4a9b4131
SG
683/**
684 * Decode the integer value of an environment variable and return it.
685 *
686 * @param name Name of environemnt variable
687 * @param base Number base to use (normally 10, or 16 for hex)
688 * @param default_val Default value to return if the variable is not
689 * found
690 * @return the decoded value, or default_val if not found
691 */
692ulong getenv_ulong(const char *name, int base, ulong default_val)
693{
694 /*
695 * We can use getenv() here, even before relocation, since the
696 * environment variable value is an integer and thus short.
697 */
698 const char *str = getenv(name);
699
700 return str ? simple_strtoul(str, NULL, base) : default_val;
701}
702
7ac2fe2d 703#ifndef CONFIG_SPL_BUILD
bdab39d3 704#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
088f1b19
KP
705static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc,
706 char * const argv[])
a68d3ed0 707{
f3c615b8 708 printf("Saving Environment to %s...\n", env_name_spec);
a68d3ed0 709
f3c615b8 710 return saveenv() ? 1 : 0;
a68d3ed0 711}
8bde7f77 712
ba69dc26 713U_BOOT_CMD(
ea882baf 714 saveenv, 1, 0, do_env_save,
2fb2604d 715 "save environment variables to persistent storage",
a89c33db 716 ""
ba69dc26 717);
a68d3ed0 718#endif
7ac2fe2d 719#endif /* CONFIG_SPL_BUILD */
a68d3ed0
WD
720
721
ea882baf 722/*
a68d3ed0
WD
723 * Match a name / name=value pair
724 *
725 * s1 is either a simple 'name', or a 'name=value' pair.
726 * i2 is the environment index for a 'name2=value2' pair.
d09b1787 727 * If the names match, return the index for the value2, else -1.
a68d3ed0 728 */
f3c615b8 729int envmatch(uchar *s1, int i2)
a68d3ed0 730{
586197df
JH
731 if (s1 == NULL)
732 return -1;
733
a68d3ed0
WD
734 while (*s1 == env_get_char(i2++))
735 if (*s1++ == '=')
f3c615b8 736 return i2;
d09b1787 737
a68d3ed0 738 if (*s1 == '\0' && env_get_char(i2-1) == '=')
f3c615b8 739 return i2;
d09b1787 740
f3c615b8 741 return -1;
a68d3ed0 742}
8bde7f77 743
7ac2fe2d 744#ifndef CONFIG_SPL_BUILD
b64b7c3d 745static int do_env_default(cmd_tbl_t *cmdtp, int __flag,
d09b1787 746 int argc, char * const argv[])
ea882baf 747{
b64b7c3d 748 int all = 0, flag = 0;
f3c615b8 749
b64b7c3d
GF
750 debug("Initial value for argc=%d\n", argc);
751 while (--argc > 0 && **++argv == '-') {
752 char *arg = *argv;
753
754 while (*++arg) {
755 switch (*arg) {
756 case 'a': /* default all */
757 all = 1;
758 break;
759 case 'f': /* force */
760 flag |= H_FORCE;
761 break;
762 default:
763 return cmd_usage(cmdtp);
764 }
765 }
766 }
767 debug("Final value for argc=%d\n", argc);
768 if (all && (argc == 0)) {
769 /* Reset the whole environment */
770 set_default_env("## Resetting to default environment\n");
771 return 0;
772 }
773 if (!all && (argc > 0)) {
774 /* Reset individual variables */
775 set_default_vars(argc, argv);
776 return 0;
777 }
778
779 return cmd_usage(cmdtp);
ea882baf
WD
780}
781
d09b1787
IG
782static int do_env_delete(cmd_tbl_t *cmdtp, int flag,
783 int argc, char * const argv[])
ea882baf 784{
9d8d661d
JH
785 int env_flag = H_INTERACTIVE;
786 int ret = 0;
787
788 debug("Initial value for argc=%d\n", argc);
789 while (argc > 1 && **(argv + 1) == '-') {
790 char *arg = *++argv;
791
792 --argc;
793 while (*++arg) {
794 switch (*arg) {
795 case 'f': /* force */
796 env_flag |= H_FORCE;
797 break;
798 default:
799 return CMD_RET_USAGE;
800 }
801 }
802 }
803 debug("Final value for argc=%d\n", argc);
804
805 env_id++;
806
807 while (--argc > 0) {
808 char *name = *++argv;
809
810 if (!hdelete_r(name, &env_htab, env_flag))
811 ret = 1;
812 }
813
814 return ret;
ea882baf
WD
815}
816
0c79cda0 817#ifdef CONFIG_CMD_EXPORTENV
ea882baf 818/*
37f2fe74 819 * env export [-t | -b | -c] [-s size] addr [var ...]
ea882baf
WD
820 * -t: export as text format; if size is given, data will be
821 * padded with '\0' bytes; if not, one terminating '\0'
822 * will be added (which is included in the "filesize"
823 * setting so you can for exmple copy this to flash and
824 * keep the termination).
825 * -b: export as binary format (name=value pairs separated by
826 * '\0', list end marked by double "\0\0")
827 * -c: export as checksum protected environment format as
828 * used for example by "saveenv" command
37f2fe74
WD
829 * -s size:
830 * size of output buffer
ea882baf 831 * addr: memory address where environment gets stored
37f2fe74
WD
832 * var... List of variable names that get included into the
833 * export. Without arguments, the whole environment gets
834 * exported.
ea882baf
WD
835 *
836 * With "-c" and size is NOT given, then the export command will
837 * format the data as currently used for the persistent storage,
838 * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and
839 * prepend a valid CRC32 checksum and, in case of resundant
840 * environment, a "current" redundancy flag. If size is given, this
841 * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32
842 * checksum and redundancy flag will be inserted.
843 *
844 * With "-b" and "-t", always only the real data (including a
845 * terminating '\0' byte) will be written; here the optional size
846 * argument will be used to make sure not to overflow the user
847 * provided buffer; the command will abort if the size is not
848 * sufficient. Any remainign space will be '\0' padded.
849 *
850 * On successful return, the variable "filesize" will be set.
851 * Note that filesize includes the trailing/terminating '\0' byte(s).
852 *
853 * Usage szenario: create a text snapshot/backup of the current settings:
854 *
855 * => env export -t 100000
856 * => era ${backup_addr} +${filesize}
857 * => cp.b 100000 ${backup_addr} ${filesize}
858 *
859 * Re-import this snapshot, deleting all other settings:
860 *
861 * => env import -d -t ${backup_addr}
862 */
d09b1787
IG
863static int do_env_export(cmd_tbl_t *cmdtp, int flag,
864 int argc, char * const argv[])
ea882baf
WD
865{
866 char buf[32];
fd37dac9
SG
867 ulong addr;
868 char *ptr, *cmd, *res;
37f2fe74 869 size_t size = 0;
ea882baf
WD
870 ssize_t len;
871 env_t *envp;
872 char sep = '\n';
873 int chk = 0;
874 int fmt = 0;
875
876 cmd = *argv;
877
878 while (--argc > 0 && **++argv == '-') {
879 char *arg = *argv;
880 while (*++arg) {
881 switch (*arg) {
882 case 'b': /* raw binary format */
883 if (fmt++)
884 goto sep_err;
885 sep = '\0';
886 break;
887 case 'c': /* external checksum format */
888 if (fmt++)
889 goto sep_err;
890 sep = '\0';
891 chk = 1;
892 break;
37f2fe74
WD
893 case 's': /* size given */
894 if (--argc <= 0)
895 return cmd_usage(cmdtp);
896 size = simple_strtoul(*++argv, NULL, 16);
897 goto NXTARG;
ea882baf
WD
898 case 't': /* text format */
899 if (fmt++)
900 goto sep_err;
901 sep = '\n';
902 break;
903 default:
4c12eeb8 904 return CMD_RET_USAGE;
ea882baf
WD
905 }
906 }
37f2fe74 907NXTARG: ;
ea882baf
WD
908 }
909
f3c615b8 910 if (argc < 1)
4c12eeb8 911 return CMD_RET_USAGE;
8bde7f77 912
fd37dac9
SG
913 addr = simple_strtoul(argv[0], NULL, 16);
914 ptr = map_sysmem(addr, size);
ea882baf 915
37f2fe74 916 if (size)
fd37dac9 917 memset(ptr, '\0', size);
37f2fe74
WD
918
919 argc--;
920 argv++;
ea882baf
WD
921
922 if (sep) { /* export as text file */
ea009d47
WD
923 len = hexport_r(&env_htab, sep,
924 H_MATCH_KEY | H_MATCH_IDENT,
fd37dac9 925 &ptr, size, argc, argv);
ea882baf 926 if (len < 0) {
d09b1787 927 error("Cannot export environment: errno = %d\n", errno);
ea882baf
WD
928 return 1;
929 }
8c3aff52 930 sprintf(buf, "%zX", (size_t)len);
ea882baf
WD
931 setenv("filesize", buf);
932
933 return 0;
934 }
935
fd37dac9 936 envp = (env_t *)ptr;
ea882baf
WD
937
938 if (chk) /* export as checksum protected block */
939 res = (char *)envp->data;
940 else /* export as raw binary data */
fd37dac9 941 res = ptr;
ea882baf 942
ea009d47
WD
943 len = hexport_r(&env_htab, '\0',
944 H_MATCH_KEY | H_MATCH_IDENT,
945 &res, ENV_SIZE, argc, argv);
ea882baf 946 if (len < 0) {
d09b1787 947 error("Cannot export environment: errno = %d\n", errno);
ea882baf
WD
948 return 1;
949 }
950
951 if (chk) {
d09b1787 952 envp->crc = crc32(0, envp->data, ENV_SIZE);
ea882baf
WD
953#ifdef CONFIG_ENV_ADDR_REDUND
954 envp->flags = ACTIVE_FLAG;
955#endif
956 }
41ef372c 957 setenv_hex("filesize", len + offsetof(env_t, data));
ea882baf
WD
958
959 return 0;
960
961sep_err:
d09b1787 962 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd);
ea882baf
WD
963 return 1;
964}
0c79cda0 965#endif
ea882baf 966
0c79cda0 967#ifdef CONFIG_CMD_IMPORTENV
ea882baf 968/*
ecd1446f 969 * env import [-d] [-t [-r] | -b | -c] addr [size]
ea882baf
WD
970 * -d: delete existing environment before importing;
971 * otherwise overwrite / append to existion definitions
972 * -t: assume text format; either "size" must be given or the
973 * text data must be '\0' terminated
ecd1446f
AH
974 * -r: handle CRLF like LF, that means exported variables with
975 * a content which ends with \r won't get imported. Used
976 * to import text files created with editors which are using CRLF
977 * for line endings. Only effective in addition to -t.
ea882baf
WD
978 * -b: assume binary format ('\0' separated, "\0\0" terminated)
979 * -c: assume checksum protected environment format
980 * addr: memory address to read from
981 * size: length of input data; if missing, proper '\0'
982 * termination is mandatory
983 */
d09b1787
IG
984static int do_env_import(cmd_tbl_t *cmdtp, int flag,
985 int argc, char * const argv[])
ea882baf 986{
fd37dac9
SG
987 ulong addr;
988 char *cmd, *ptr;
ea882baf
WD
989 char sep = '\n';
990 int chk = 0;
991 int fmt = 0;
992 int del = 0;
ecd1446f 993 int crlf_is_lf = 0;
ea882baf
WD
994 size_t size;
995
996 cmd = *argv;
997
998 while (--argc > 0 && **++argv == '-') {
999 char *arg = *argv;
1000 while (*++arg) {
1001 switch (*arg) {
1002 case 'b': /* raw binary format */
1003 if (fmt++)
1004 goto sep_err;
1005 sep = '\0';
1006 break;
1007 case 'c': /* external checksum format */
1008 if (fmt++)
1009 goto sep_err;
1010 sep = '\0';
1011 chk = 1;
1012 break;
1013 case 't': /* text format */
1014 if (fmt++)
1015 goto sep_err;
1016 sep = '\n';
1017 break;
ecd1446f
AH
1018 case 'r': /* handle CRLF like LF */
1019 crlf_is_lf = 1;
1020 break;
ea882baf
WD
1021 case 'd':
1022 del = 1;
1023 break;
1024 default:
4c12eeb8 1025 return CMD_RET_USAGE;
ea882baf
WD
1026 }
1027 }
1028 }
1029
f3c615b8 1030 if (argc < 1)
4c12eeb8 1031 return CMD_RET_USAGE;
ea882baf
WD
1032
1033 if (!fmt)
1034 printf("## Warning: defaulting to text format\n");
1035
ecd1446f
AH
1036 if (sep != '\n' && crlf_is_lf )
1037 crlf_is_lf = 0;
1038
fd37dac9
SG
1039 addr = simple_strtoul(argv[0], NULL, 16);
1040 ptr = map_sysmem(addr, 0);
ea882baf
WD
1041
1042 if (argc == 2) {
1043 size = simple_strtoul(argv[1], NULL, 16);
3775dcd9
TR
1044 } else if (argc == 1 && chk) {
1045 puts("## Error: external checksum format must pass size\n");
1046 return CMD_RET_FAILURE;
ea882baf 1047 } else {
fd37dac9 1048 char *s = ptr;
ea882baf
WD
1049
1050 size = 0;
1051
1052 while (size < MAX_ENV_SIZE) {
1053 if ((*s == sep) && (*(s+1) == '\0'))
1054 break;
1055 ++s;
1056 ++size;
1057 }
1058 if (size == MAX_ENV_SIZE) {
1059 printf("## Warning: Input data exceeds %d bytes"
1060 " - truncated\n", MAX_ENV_SIZE);
1061 }
d3f80c77 1062 size += 2;
79afc88d 1063 printf("## Info: input data size = %zu = 0x%zX\n", size, size);
ea882baf
WD
1064 }
1065
1066 if (chk) {
1067 uint32_t crc;
fd37dac9 1068 env_t *ep = (env_t *)ptr;
ea882baf
WD
1069
1070 size -= offsetof(env_t, data);
1071 memcpy(&crc, &ep->crc, sizeof(crc));
1072
1073 if (crc32(0, ep->data, size) != crc) {
1074 puts("## Error: bad CRC, import failed\n");
1075 return 1;
1076 }
fd37dac9 1077 ptr = (char *)ep->data;
ea882baf
WD
1078 }
1079
ecd1446f
AH
1080 if (himport_r(&env_htab, ptr, size, sep, del ? 0 : H_NOCLEAR,
1081 crlf_is_lf, 0, NULL) == 0) {
ea882baf
WD
1082 error("Environment import failed: errno = %d\n", errno);
1083 return 1;
1084 }
1085 gd->flags |= GD_FLG_ENV_READY;
1086
1087 return 0;
1088
1089sep_err:
1090 printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n",
1091 cmd);
1092 return 1;
1093}
0c79cda0 1094#endif
ea882baf 1095
88733e2c
AR
1096#if defined(CONFIG_CMD_ENV_EXISTS)
1097static int do_env_exists(cmd_tbl_t *cmdtp, int flag, int argc,
1098 char * const argv[])
1099{
1100 ENTRY e, *ep;
1101
1102 if (argc < 2)
1103 return CMD_RET_USAGE;
1104
1105 e.key = argv[1];
1106 e.data = NULL;
1107 hsearch_r(e, FIND, &ep, &env_htab, 0);
1108
1109 return (ep == NULL) ? 1 : 0;
1110}
1111#endif
1112
ea882baf
WD
1113/*
1114 * New command line interface: "env" command with subcommands
1115 */
1116static cmd_tbl_t cmd_env_sub[] = {
1117#if defined(CONFIG_CMD_ASKENV)
1118 U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""),
1119#endif
1120 U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""),
9d8d661d 1121 U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""),
ea882baf
WD
1122#if defined(CONFIG_CMD_EDITENV)
1123 U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""),
1124#endif
5e2b3e0c
JH
1125#if defined(CONFIG_CMD_ENV_CALLBACK)
1126 U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""),
1127#endif
fffad71b
JH
1128#if defined(CONFIG_CMD_ENV_FLAGS)
1129 U_BOOT_CMD_MKENT(flags, 1, 0, do_env_flags, "", ""),
1130#endif
0c79cda0 1131#if defined(CONFIG_CMD_EXPORTENV)
ea882baf 1132 U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""),
0c79cda0 1133#endif
a000b795
KP
1134#if defined(CONFIG_CMD_GREPENV)
1135 U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""),
1136#endif
0c79cda0 1137#if defined(CONFIG_CMD_IMPORTENV)
ea882baf 1138 U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""),
0c79cda0 1139#endif
ea882baf
WD
1140 U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""),
1141#if defined(CONFIG_CMD_RUN)
1142 U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""),
1143#endif
1144#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
1145 U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""),
1146#endif
1147 U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""),
88733e2c
AR
1148#if defined(CONFIG_CMD_ENV_EXISTS)
1149 U_BOOT_CMD_MKENT(exists, 2, 0, do_env_exists, "", ""),
1150#endif
ea882baf
WD
1151};
1152
2e5167cc 1153#if defined(CONFIG_NEEDS_MANUAL_RELOC)
60f7da1f
HS
1154void env_reloc(void)
1155{
1156 fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1157}
1158#endif
1159
f3c615b8 1160static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
ea882baf
WD
1161{
1162 cmd_tbl_t *cp;
1163
5904da02 1164 if (argc < 2)
4c12eeb8 1165 return CMD_RET_USAGE;
5904da02 1166
ea882baf
WD
1167 /* drop initial "env" arg */
1168 argc--;
1169 argv++;
1170
1171 cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub));
1172
1173 if (cp)
1174 return cp->cmd(cmdtp, flag, argc, argv);
1175
4c12eeb8 1176 return CMD_RET_USAGE;
ea882baf
WD
1177}
1178
088f1b19
KP
1179#ifdef CONFIG_SYS_LONGHELP
1180static char env_help_text[] =
ea882baf
WD
1181#if defined(CONFIG_CMD_ASKENV)
1182 "ask name [message] [size] - ask for environment variable\nenv "
5e2b3e0c
JH
1183#endif
1184#if defined(CONFIG_CMD_ENV_CALLBACK)
1185 "callbacks - print callbacks and their associated variables\nenv "
ea882baf 1186#endif
b64b7c3d
GF
1187 "default [-f] -a - [forcibly] reset default environment\n"
1188 "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n"
9d8d661d 1189 "env delete [-f] var [...] - [forcibly] delete variable(s)\n"
ea882baf
WD
1190#if defined(CONFIG_CMD_EDITENV)
1191 "env edit name - edit environment variable\n"
1192#endif
88733e2c
AR
1193#if defined(CONFIG_CMD_ENV_EXISTS)
1194 "env exists name - tests for existence of variable\n"
1195#endif
4796bc4b 1196#if defined(CONFIG_CMD_EXPORTENV)
37f2fe74 1197 "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n"
4796bc4b 1198#endif
fffad71b
JH
1199#if defined(CONFIG_CMD_ENV_FLAGS)
1200 "env flags - print variables that have non-default flags\n"
1201#endif
a000b795 1202#if defined(CONFIG_CMD_GREPENV)
be29df6a
WD
1203#ifdef CONFIG_REGEX
1204 "env grep [-e] [-n | -v | -b] string [...] - search environment\n"
1205#else
d87244d5 1206 "env grep [-n | -v | -b] string [...] - search environment\n"
a000b795 1207#endif
be29df6a 1208#endif
4796bc4b 1209#if defined(CONFIG_CMD_IMPORTENV)
ecd1446f 1210 "env import [-d] [-t [-r] | -b | -c] addr [size] - import environment\n"
4796bc4b 1211#endif
be11235a 1212 "env print [-a | name ...] - print environment\n"
ea882baf
WD
1213#if defined(CONFIG_CMD_RUN)
1214 "env run var [...] - run commands in an environment variable\n"
1215#endif
d798a9b5 1216#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
ea882baf 1217 "env save - save environment\n"
d798a9b5 1218#endif
088f1b19
KP
1219 "env set [-f] name [arg ...]\n";
1220#endif
1221
1222U_BOOT_CMD(
1223 env, CONFIG_SYS_MAXARGS, 1, do_env,
1224 "environment handling commands", env_help_text
ea882baf
WD
1225);
1226
1227/*
1228 * Old command line interface, kept for compatibility
1229 */
8bde7f77 1230
246c6922 1231#if defined(CONFIG_CMD_EDITENV)
722b061b 1232U_BOOT_CMD_COMPLETE(
ea882baf 1233 editenv, 2, 0, do_env_edit,
246c6922
PT
1234 "edit environment variable",
1235 "name\n"
722b061b
MF
1236 " - edit environment variable 'name'",
1237 var_complete
246c6922
PT
1238);
1239#endif
1240
722b061b 1241U_BOOT_CMD_COMPLETE(
ea882baf 1242 printenv, CONFIG_SYS_MAXARGS, 1, do_env_print,
2fb2604d 1243 "print environment variables",
be11235a 1244 "[-a]\n - print [all] values of all environment variables\n"
8bde7f77 1245 "printenv name ...\n"
722b061b
MF
1246 " - print value of environment variable 'name'",
1247 var_complete
8bde7f77
WD
1248);
1249
a000b795
KP
1250#ifdef CONFIG_CMD_GREPENV
1251U_BOOT_CMD_COMPLETE(
1252 grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep,
1253 "search environment variables",
be29df6a
WD
1254#ifdef CONFIG_REGEX
1255 "[-e] [-n | -v | -b] string ...\n"
1256#else
d87244d5 1257 "[-n | -v | -b] string ...\n"
be29df6a 1258#endif
d87244d5 1259 " - list environment name=value pairs matching 'string'\n"
be29df6a
WD
1260#ifdef CONFIG_REGEX
1261 " \"-e\": enable regular expressions;\n"
1262#endif
d87244d5
WD
1263 " \"-n\": search variable names; \"-v\": search values;\n"
1264 " \"-b\": search both names and values (default)",
a000b795
KP
1265 var_complete
1266);
1267#endif
1268
722b061b 1269U_BOOT_CMD_COMPLETE(
ea882baf 1270 setenv, CONFIG_SYS_MAXARGS, 0, do_env_set,
2fb2604d 1271 "set environment variables",
24ab5a19
JH
1272 "[-f] name value ...\n"
1273 " - [forcibly] set environment variable 'name' to 'value ...'\n"
1274 "setenv [-f] name\n"
1275 " - [forcibly] delete environment variable 'name'",
722b061b 1276 var_complete
8bde7f77
WD
1277);
1278
c76fe474 1279#if defined(CONFIG_CMD_ASKENV)
8bde7f77 1280
0d498393 1281U_BOOT_CMD(
ea882baf 1282 askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask,
2fb2604d 1283 "get environment variables from stdin",
8bde7f77 1284 "name [message] [size]\n"
7d85591d 1285 " - get environment variable 'name' from stdin (max 'size' chars)"
8bde7f77 1286);
90253178 1287#endif
8bde7f77 1288
c76fe474 1289#if defined(CONFIG_CMD_RUN)
722b061b 1290U_BOOT_CMD_COMPLETE(
6d0f6bcf 1291 run, CONFIG_SYS_MAXARGS, 1, do_run,
2fb2604d 1292 "run commands in an environment variable",
8bde7f77 1293 "var [...]\n"
722b061b
MF
1294 " - run the commands in the environment variable(s) 'var'",
1295 var_complete
8bde7f77 1296);
90253178 1297#endif
7ac2fe2d 1298#endif /* CONFIG_SPL_BUILD */