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a68d3ed0 | 1 | /* |
ea882baf | 2 | * (C) Copyright 2000-2010 |
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 | * | |
a68d3ed0 WD |
10 | * See file CREDITS for list of people who contributed to this |
11 | * project. | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License as | |
15 | * published by the Free Software Foundation; either version 2 of | |
16 | * the License, or (at your option) any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
26 | * MA 02111-1307 USA | |
27 | */ | |
28 | ||
ea882baf | 29 | /* |
a68d3ed0 WD |
30 | * Support for persistent environment data |
31 | * | |
ea882baf WD |
32 | * The "environment" is stored on external storage as a list of '\0' |
33 | * terminated "name=value" strings. The end of the list is marked by | |
34 | * a double '\0'. The environment is preceeded by a 32 bit CRC over | |
35 | * the data part and, in case of redundant environment, a byte of | |
36 | * flags. | |
a68d3ed0 | 37 | * |
ea882baf WD |
38 | * This linearized representation will also be used before |
39 | * relocation, i. e. as long as we don't have a full C runtime | |
40 | * environment. After that, we use a hash table. | |
a68d3ed0 WD |
41 | */ |
42 | ||
43 | #include <common.h> | |
44 | #include <command.h> | |
45 | #include <environment.h> | |
ea882baf WD |
46 | #include <search.h> |
47 | #include <errno.h> | |
246c6922 | 48 | #include <malloc.h> |
2a3cb020 | 49 | #include <watchdog.h> |
a68d3ed0 WD |
50 | #include <linux/stddef.h> |
51 | #include <asm/byteorder.h> | |
a68d3ed0 | 52 | |
d87080b7 WD |
53 | DECLARE_GLOBAL_DATA_PTR; |
54 | ||
f3c615b8 ML |
55 | #if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ |
56 | !defined(CONFIG_ENV_IS_IN_FLASH) && \ | |
57 | !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ | |
f3c615b8 | 58 | !defined(CONFIG_ENV_IS_IN_MMC) && \ |
57210c7c | 59 | !defined(CONFIG_ENV_IS_IN_FAT) && \ |
f3c615b8 ML |
60 | !defined(CONFIG_ENV_IS_IN_NAND) && \ |
61 | !defined(CONFIG_ENV_IS_IN_NVRAM) && \ | |
62 | !defined(CONFIG_ENV_IS_IN_ONENAND) && \ | |
63 | !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ | |
0a85a9e7 | 64 | !defined(CONFIG_ENV_IS_IN_REMOTE) && \ |
f3c615b8 | 65 | !defined(CONFIG_ENV_IS_NOWHERE) |
75eb82ec | 66 | # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ |
b37d41aa | 67 | SPI_FLASH|NVRAM|MMC|FAT|REMOTE} or CONFIG_ENV_IS_NOWHERE |
a68d3ed0 WD |
68 | #endif |
69 | ||
ea882baf WD |
70 | /* |
71 | * Maximum expected input data size for import command | |
72 | */ | |
73 | #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */ | |
a68d3ed0 | 74 | |
da95427c | 75 | /* |
ea882baf | 76 | * This variable is incremented on each do_env_set(), so it can |
da95427c HS |
77 | * be used via get_env_id() as an indication, if the environment |
78 | * has changed or not. So it is possible to reread an environment | |
79 | * variable only if the environment was changed ... done so for | |
80 | * example in NetInitLoop() | |
81 | */ | |
2f70c49e | 82 | static int env_id = 1; |
a68d3ed0 | 83 | |
f3c615b8 | 84 | int get_env_id(void) |
2f70c49e HS |
85 | { |
86 | return env_id; | |
87 | } | |
a68d3ed0 | 88 | |
7ac2fe2d | 89 | #ifndef CONFIG_SPL_BUILD |
4c94f6c5 | 90 | /* |
ea882baf WD |
91 | * Command interface: print one or all environment variables |
92 | * | |
93 | * Returns 0 in case of error, or length of printed string | |
4c94f6c5 | 94 | */ |
be11235a | 95 | static int env_print(char *name, int flag) |
a68d3ed0 | 96 | { |
ea882baf WD |
97 | char *res = NULL; |
98 | size_t len; | |
99 | ||
100 | if (name) { /* print a single name */ | |
101 | ENTRY e, *ep; | |
102 | ||
103 | e.key = name; | |
104 | e.data = NULL; | |
be11235a | 105 | hsearch_r(e, FIND, &ep, &env_htab, flag); |
ea882baf WD |
106 | if (ep == NULL) |
107 | return 0; | |
f3c615b8 | 108 | len = printf("%s=%s\n", ep->key, ep->data); |
ea882baf WD |
109 | return len; |
110 | } | |
a68d3ed0 | 111 | |
ea882baf | 112 | /* print whole list */ |
be11235a | 113 | len = hexport_r(&env_htab, '\n', flag, &res, 0, 0, NULL); |
a68d3ed0 | 114 | |
ea882baf WD |
115 | if (len > 0) { |
116 | puts(res); | |
117 | free(res); | |
118 | return len; | |
a68d3ed0 WD |
119 | } |
120 | ||
ea882baf WD |
121 | /* should never happen */ |
122 | return 0; | |
4c94f6c5 | 123 | } |
a68d3ed0 | 124 | |
088f1b19 KP |
125 | static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, |
126 | char * const argv[]) | |
4c94f6c5 MF |
127 | { |
128 | int i; | |
129 | int rcode = 0; | |
be11235a JH |
130 | int env_flag = H_HIDE_DOT; |
131 | ||
132 | if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') { | |
133 | argc--; | |
134 | argv++; | |
135 | env_flag &= ~H_HIDE_DOT; | |
136 | } | |
a68d3ed0 | 137 | |
4c94f6c5 MF |
138 | if (argc == 1) { |
139 | /* print all env vars */ | |
be11235a | 140 | rcode = env_print(NULL, env_flag); |
ea882baf | 141 | if (!rcode) |
4c94f6c5 MF |
142 | return 1; |
143 | printf("\nEnvironment size: %d/%ld bytes\n", | |
144 | rcode, (ulong)ENV_SIZE); | |
145 | return 0; | |
146 | } | |
a68d3ed0 | 147 | |
4c94f6c5 | 148 | /* print selected env vars */ |
be11235a | 149 | env_flag &= ~H_HIDE_DOT; |
4c94f6c5 | 150 | for (i = 1; i < argc; ++i) { |
be11235a | 151 | int rc = env_print(argv[i], env_flag); |
ea882baf WD |
152 | if (!rc) { |
153 | printf("## Error: \"%s\" not defined\n", argv[i]); | |
4c94f6c5 | 154 | ++rcode; |
a68d3ed0 WD |
155 | } |
156 | } | |
4c94f6c5 | 157 | |
a68d3ed0 WD |
158 | return rcode; |
159 | } | |
160 | ||
a000b795 | 161 | #ifdef CONFIG_CMD_GREPENV |
d09b1787 IG |
162 | static int do_env_grep(cmd_tbl_t *cmdtp, int flag, |
163 | int argc, char * const argv[]) | |
a000b795 KP |
164 | { |
165 | ENTRY *match; | |
166 | unsigned char matched[env_htab.size / 8]; | |
167 | int rcode = 1, arg = 1, idx; | |
168 | ||
169 | if (argc < 2) | |
4c12eeb8 | 170 | return CMD_RET_USAGE; |
a000b795 KP |
171 | |
172 | memset(matched, 0, env_htab.size / 8); | |
173 | ||
174 | while (arg <= argc) { | |
175 | idx = 0; | |
068f158f | 176 | while ((idx = hstrstr_r(argv[arg], idx, &match, &env_htab))) { |
a000b795 KP |
177 | if (!(matched[idx / 8] & (1 << (idx & 7)))) { |
178 | puts(match->key); | |
179 | puts("="); | |
180 | puts(match->data); | |
181 | puts("\n"); | |
182 | } | |
183 | matched[idx / 8] |= 1 << (idx & 7); | |
184 | rcode = 0; | |
185 | } | |
186 | arg++; | |
187 | } | |
188 | ||
189 | return rcode; | |
190 | } | |
191 | #endif | |
7ac2fe2d | 192 | #endif /* CONFIG_SPL_BUILD */ |
a000b795 | 193 | |
c3f65258 GF |
194 | /* |
195 | * Set a new environment variable, | |
196 | * or replace or delete an existing one. | |
2598090b | 197 | */ |
088f1b19 | 198 | static int _do_env_set(int flag, int argc, char * const argv[]) |
c3f65258 GF |
199 | { |
200 | int i, len; | |
201 | char *name, *value, *s; | |
202 | ENTRY e, *ep; | |
203 | ||
204 | name = argv[1]; | |
205 | value = argv[2]; | |
206 | ||
207 | if (strchr(name, '=')) { | |
208 | printf("## Error: illegal character '='" | |
209 | "in variable name \"%s\"\n", name); | |
210 | return 1; | |
211 | } | |
212 | ||
213 | env_id++; | |
c3f65258 | 214 | |
a68d3ed0 | 215 | /* Delete only ? */ |
d09b1787 | 216 | if (argc < 3 || argv[2] == NULL) { |
c4e0057f | 217 | int rc = hdelete_r(name, &env_htab, H_INTERACTIVE); |
ea882baf | 218 | return !rc; |
a68d3ed0 WD |
219 | } |
220 | ||
221 | /* | |
ea882baf | 222 | * Insert / replace new value |
a68d3ed0 | 223 | */ |
f3c615b8 | 224 | for (i = 2, len = 0; i < argc; ++i) |
a68d3ed0 | 225 | len += strlen(argv[i]) + 1; |
f3c615b8 ML |
226 | |
227 | value = malloc(len); | |
228 | if (value == NULL) { | |
ea882baf | 229 | printf("## Can't malloc %d bytes\n", len); |
a68d3ed0 WD |
230 | return 1; |
231 | } | |
f3c615b8 | 232 | for (i = 2, s = value; i < argc; ++i) { |
ea882baf | 233 | char *v = argv[i]; |
a68d3ed0 | 234 | |
ea882baf | 235 | while ((*s++ = *v++) != '\0') |
a68d3ed0 | 236 | ; |
d09b1787 | 237 | *(s - 1) = ' '; |
ea882baf WD |
238 | } |
239 | if (s != value) | |
240 | *--s = '\0'; | |
241 | ||
d09b1787 IG |
242 | e.key = name; |
243 | e.data = value; | |
c4e0057f | 244 | hsearch_r(e, ENTER, &ep, &env_htab, H_INTERACTIVE); |
ea882baf WD |
245 | free(value); |
246 | if (!ep) { | |
247 | printf("## Error inserting \"%s\" variable, errno=%d\n", | |
248 | name, errno); | |
249 | return 1; | |
a68d3ed0 | 250 | } |
a68d3ed0 | 251 | |
a68d3ed0 WD |
252 | return 0; |
253 | } | |
254 | ||
84b5e802 | 255 | int setenv(const char *varname, const char *varvalue) |
a68d3ed0 | 256 | { |
84b5e802 WD |
257 | const char * const argv[4] = { "setenv", varname, varvalue, NULL }; |
258 | ||
d09b1787 | 259 | if (varvalue == NULL || varvalue[0] == '\0') |
84b5e802 | 260 | return _do_env_set(0, 2, (char * const *)argv); |
9ffd451a | 261 | else |
84b5e802 | 262 | return _do_env_set(0, 3, (char * const *)argv); |
a68d3ed0 WD |
263 | } |
264 | ||
d67f10ce SG |
265 | /** |
266 | * Set an environment variable to an integer value | |
267 | * | |
268 | * @param varname Environmet variable to set | |
269 | * @param value Value to set it to | |
270 | * @return 0 if ok, 1 on error | |
271 | */ | |
272 | int setenv_ulong(const char *varname, ulong value) | |
273 | { | |
274 | /* TODO: this should be unsigned */ | |
275 | char *str = simple_itoa(value); | |
276 | ||
277 | return setenv(varname, str); | |
278 | } | |
279 | ||
280 | /** | |
281 | * Set an environment variable to an address in hex | |
282 | * | |
283 | * @param varname Environmet variable to set | |
284 | * @param addr Value to set it to | |
285 | * @return 0 if ok, 1 on error | |
286 | */ | |
287 | int setenv_addr(const char *varname, const void *addr) | |
288 | { | |
289 | char str[17]; | |
290 | ||
79afc88d | 291 | sprintf(str, "%lx", (uintptr_t)addr); |
d67f10ce SG |
292 | return setenv(varname, str); |
293 | } | |
294 | ||
7ac2fe2d | 295 | #ifndef CONFIG_SPL_BUILD |
088f1b19 | 296 | static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 297 | { |
47e26b1b | 298 | if (argc < 2) |
4c12eeb8 | 299 | return CMD_RET_USAGE; |
a68d3ed0 | 300 | |
ea882baf | 301 | return _do_env_set(flag, argc, argv); |
a68d3ed0 WD |
302 | } |
303 | ||
ea882baf | 304 | /* |
a68d3ed0 WD |
305 | * Prompt for environment variable |
306 | */ | |
c76fe474 | 307 | #if defined(CONFIG_CMD_ASKENV) |
f3c615b8 | 308 | int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 309 | { |
6d0f6bcf JCPV |
310 | char message[CONFIG_SYS_CBSIZE]; |
311 | int size = CONFIG_SYS_CBSIZE - 1; | |
ea882baf | 312 | int i, len, pos; |
a68d3ed0 WD |
313 | char *local_args[4]; |
314 | ||
315 | local_args[0] = argv[0]; | |
316 | local_args[1] = argv[1]; | |
317 | local_args[2] = NULL; | |
318 | local_args[3] = NULL; | |
319 | ||
a68d3ed0 WD |
320 | /* Check the syntax */ |
321 | switch (argc) { | |
322 | case 1: | |
4c12eeb8 | 323 | return CMD_RET_USAGE; |
a68d3ed0 | 324 | |
ea882baf WD |
325 | case 2: /* env_ask envname */ |
326 | sprintf(message, "Please enter '%s':", argv[1]); | |
a68d3ed0 WD |
327 | break; |
328 | ||
ea882baf WD |
329 | case 3: /* env_ask envname size */ |
330 | sprintf(message, "Please enter '%s':", argv[1]); | |
331 | size = simple_strtoul(argv[2], NULL, 10); | |
a68d3ed0 WD |
332 | break; |
333 | ||
ea882baf | 334 | default: /* env_ask envname message1 ... messagen size */ |
f3c615b8 ML |
335 | for (i = 2, pos = 0; i < argc - 1; i++) { |
336 | if (pos) | |
a68d3ed0 | 337 | message[pos++] = ' '; |
f3c615b8 | 338 | |
d09b1787 | 339 | strcpy(message + pos, argv[i]); |
a68d3ed0 WD |
340 | pos += strlen(argv[i]); |
341 | } | |
d09b1787 | 342 | |
a68d3ed0 | 343 | message[pos] = '\0'; |
ea882baf | 344 | size = simple_strtoul(argv[argc - 1], NULL, 10); |
a68d3ed0 WD |
345 | break; |
346 | } | |
347 | ||
6d0f6bcf JCPV |
348 | if (size >= CONFIG_SYS_CBSIZE) |
349 | size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
350 | |
351 | if (size <= 0) | |
352 | return 1; | |
353 | ||
354 | /* prompt for input */ | |
ea882baf | 355 | len = readline(message); |
a68d3ed0 WD |
356 | |
357 | if (size < len) | |
358 | console_buffer[size] = '\0'; | |
359 | ||
360 | len = 2; | |
361 | if (console_buffer[0] != '\0') { | |
362 | local_args[2] = console_buffer; | |
363 | len = 3; | |
364 | } | |
365 | ||
366 | /* Continue calling setenv code */ | |
ea882baf | 367 | return _do_env_set(flag, len, local_args); |
a68d3ed0 | 368 | } |
90253178 | 369 | #endif |
a68d3ed0 | 370 | |
5e2b3e0c JH |
371 | #if defined(CONFIG_CMD_ENV_CALLBACK) |
372 | static int print_static_binding(const char *var_name, const char *callback_name) | |
373 | { | |
374 | printf("\t%-20s %-20s\n", var_name, callback_name); | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static int print_active_callback(ENTRY *entry) | |
380 | { | |
381 | struct env_clbk_tbl *clbkp; | |
382 | int i; | |
383 | int num_callbacks; | |
384 | ||
385 | if (entry->callback == NULL) | |
386 | return 0; | |
387 | ||
388 | /* look up the callback in the linker-list */ | |
389 | num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk); | |
390 | for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk); | |
391 | i < num_callbacks; | |
392 | i++, clbkp++) { | |
393 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) | |
394 | if (entry->callback == clbkp->callback + gd->reloc_off) | |
395 | #else | |
396 | if (entry->callback == clbkp->callback) | |
397 | #endif | |
398 | break; | |
399 | } | |
400 | ||
401 | if (i == num_callbacks) | |
402 | /* this should probably never happen, but just in case... */ | |
403 | printf("\t%-20s %p\n", entry->key, entry->callback); | |
404 | else | |
405 | printf("\t%-20s %-20s\n", entry->key, clbkp->name); | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | /* | |
411 | * Print the callbacks available and what they are bound to | |
412 | */ | |
413 | int do_env_callback(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
414 | { | |
415 | struct env_clbk_tbl *clbkp; | |
416 | int i; | |
417 | int num_callbacks; | |
418 | ||
419 | /* Print the available callbacks */ | |
420 | puts("Available callbacks:\n"); | |
421 | puts("\tCallback Name\n"); | |
422 | puts("\t-------------\n"); | |
423 | num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk); | |
424 | for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk); | |
425 | i < num_callbacks; | |
426 | i++, clbkp++) | |
427 | printf("\t%s\n", clbkp->name); | |
428 | puts("\n"); | |
429 | ||
430 | /* Print the static bindings that may exist */ | |
431 | puts("Static callback bindings:\n"); | |
432 | printf("\t%-20s %-20s\n", "Variable Name", "Callback Name"); | |
433 | printf("\t%-20s %-20s\n", "-------------", "-------------"); | |
434 | env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding); | |
435 | puts("\n"); | |
436 | ||
437 | /* walk through each variable and print the callback if it has one */ | |
438 | puts("Active callback bindings:\n"); | |
439 | printf("\t%-20s %-20s\n", "Variable Name", "Callback Name"); | |
440 | printf("\t%-20s %-20s\n", "-------------", "-------------"); | |
441 | hwalk_r(&env_htab, print_active_callback); | |
442 | return 0; | |
443 | } | |
444 | #endif | |
445 | ||
ea882baf | 446 | /* |
246c6922 PT |
447 | * Interactively edit an environment variable |
448 | */ | |
449 | #if defined(CONFIG_CMD_EDITENV) | |
088f1b19 KP |
450 | static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, |
451 | char * const argv[]) | |
246c6922 PT |
452 | { |
453 | char buffer[CONFIG_SYS_CBSIZE]; | |
454 | char *init_val; | |
246c6922 | 455 | |
47e26b1b | 456 | if (argc < 2) |
4c12eeb8 | 457 | return CMD_RET_USAGE; |
246c6922 PT |
458 | |
459 | /* Set read buffer to initial value or empty sting */ | |
460 | init_val = getenv(argv[1]); | |
461 | if (init_val) | |
7fcd9bbd | 462 | sprintf(buffer, "%s", init_val); |
246c6922 PT |
463 | else |
464 | buffer[0] = '\0'; | |
465 | ||
9c348311 | 466 | readline_into_buffer("edit: ", buffer, 0); |
246c6922 PT |
467 | |
468 | return setenv(argv[1], buffer); | |
469 | } | |
470 | #endif /* CONFIG_CMD_EDITENV */ | |
7ac2fe2d | 471 | #endif /* CONFIG_SPL_BUILD */ |
246c6922 | 472 | |
ea882baf | 473 | /* |
a68d3ed0 WD |
474 | * Look up variable from environment, |
475 | * return address of storage for that variable, | |
476 | * or NULL if not found | |
477 | */ | |
84b5e802 | 478 | char *getenv(const char *name) |
a68d3ed0 | 479 | { |
d09b1787 | 480 | if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */ |
ea882baf | 481 | ENTRY e, *ep; |
a68d3ed0 | 482 | |
91a76751 | 483 | WATCHDOG_RESET(); |
2a3cb020 | 484 | |
d09b1787 IG |
485 | e.key = name; |
486 | e.data = NULL; | |
c4e0057f | 487 | hsearch_r(e, FIND, &ep, &env_htab, 0); |
91a76751 | 488 | |
f3c615b8 | 489 | return ep ? ep->data : NULL; |
a68d3ed0 WD |
490 | } |
491 | ||
ea882baf | 492 | /* restricted capabilities before import */ |
ea882baf WD |
493 | if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0) |
494 | return (char *)(gd->env_buf); | |
91a76751 | 495 | |
ea882baf | 496 | return NULL; |
a68d3ed0 WD |
497 | } |
498 | ||
ea882baf WD |
499 | /* |
500 | * Look up variable from environment for restricted C runtime env. | |
501 | */ | |
84b5e802 | 502 | int getenv_f(const char *name, char *buf, unsigned len) |
a68d3ed0 WD |
503 | { |
504 | int i, nxt; | |
505 | ||
d09b1787 | 506 | for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) { |
a68d3ed0 WD |
507 | int val, n; |
508 | ||
f3c615b8 ML |
509 | for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) { |
510 | if (nxt >= CONFIG_ENV_SIZE) | |
511 | return -1; | |
a68d3ed0 | 512 | } |
f3c615b8 ML |
513 | |
514 | val = envmatch((uchar *)name, i); | |
515 | if (val < 0) | |
a68d3ed0 | 516 | continue; |
9ed4a958 | 517 | |
a68d3ed0 | 518 | /* found; copy out */ |
f3c615b8 | 519 | for (n = 0; n < len; ++n, ++buf) { |
d09b1787 IG |
520 | *buf = env_get_char(val++); |
521 | if (*buf == '\0') | |
9ed4a958 WD |
522 | return n; |
523 | } | |
524 | ||
525 | if (n) | |
526 | *--buf = '\0'; | |
527 | ||
a02a884b WD |
528 | printf("env_buf [%d bytes] too small for value of \"%s\"\n", |
529 | len, name); | |
9ed4a958 WD |
530 | |
531 | return n; | |
a68d3ed0 | 532 | } |
d09b1787 | 533 | |
f3c615b8 | 534 | return -1; |
a68d3ed0 WD |
535 | } |
536 | ||
4a9b4131 SG |
537 | /** |
538 | * Decode the integer value of an environment variable and return it. | |
539 | * | |
540 | * @param name Name of environemnt variable | |
541 | * @param base Number base to use (normally 10, or 16 for hex) | |
542 | * @param default_val Default value to return if the variable is not | |
543 | * found | |
544 | * @return the decoded value, or default_val if not found | |
545 | */ | |
546 | ulong getenv_ulong(const char *name, int base, ulong default_val) | |
547 | { | |
548 | /* | |
549 | * We can use getenv() here, even before relocation, since the | |
550 | * environment variable value is an integer and thus short. | |
551 | */ | |
552 | const char *str = getenv(name); | |
553 | ||
554 | return str ? simple_strtoul(str, NULL, base) : default_val; | |
555 | } | |
556 | ||
7ac2fe2d | 557 | #ifndef CONFIG_SPL_BUILD |
bdab39d3 | 558 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
088f1b19 KP |
559 | static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, |
560 | char * const argv[]) | |
a68d3ed0 | 561 | { |
f3c615b8 | 562 | printf("Saving Environment to %s...\n", env_name_spec); |
a68d3ed0 | 563 | |
f3c615b8 | 564 | return saveenv() ? 1 : 0; |
a68d3ed0 | 565 | } |
8bde7f77 | 566 | |
ba69dc26 | 567 | U_BOOT_CMD( |
ea882baf | 568 | saveenv, 1, 0, do_env_save, |
2fb2604d | 569 | "save environment variables to persistent storage", |
a89c33db | 570 | "" |
ba69dc26 | 571 | ); |
a68d3ed0 | 572 | #endif |
7ac2fe2d | 573 | #endif /* CONFIG_SPL_BUILD */ |
a68d3ed0 WD |
574 | |
575 | ||
ea882baf | 576 | /* |
a68d3ed0 WD |
577 | * Match a name / name=value pair |
578 | * | |
579 | * s1 is either a simple 'name', or a 'name=value' pair. | |
580 | * i2 is the environment index for a 'name2=value2' pair. | |
d09b1787 | 581 | * If the names match, return the index for the value2, else -1. |
a68d3ed0 | 582 | */ |
f3c615b8 | 583 | int envmatch(uchar *s1, int i2) |
a68d3ed0 | 584 | { |
586197df JH |
585 | if (s1 == NULL) |
586 | return -1; | |
587 | ||
a68d3ed0 WD |
588 | while (*s1 == env_get_char(i2++)) |
589 | if (*s1++ == '=') | |
f3c615b8 | 590 | return i2; |
d09b1787 | 591 | |
a68d3ed0 | 592 | if (*s1 == '\0' && env_get_char(i2-1) == '=') |
f3c615b8 | 593 | return i2; |
d09b1787 | 594 | |
f3c615b8 | 595 | return -1; |
a68d3ed0 | 596 | } |
8bde7f77 | 597 | |
7ac2fe2d | 598 | #ifndef CONFIG_SPL_BUILD |
b64b7c3d | 599 | static int do_env_default(cmd_tbl_t *cmdtp, int __flag, |
d09b1787 | 600 | int argc, char * const argv[]) |
ea882baf | 601 | { |
b64b7c3d | 602 | int all = 0, flag = 0; |
f3c615b8 | 603 | |
b64b7c3d GF |
604 | debug("Initial value for argc=%d\n", argc); |
605 | while (--argc > 0 && **++argv == '-') { | |
606 | char *arg = *argv; | |
607 | ||
608 | while (*++arg) { | |
609 | switch (*arg) { | |
610 | case 'a': /* default all */ | |
611 | all = 1; | |
612 | break; | |
613 | case 'f': /* force */ | |
614 | flag |= H_FORCE; | |
615 | break; | |
616 | default: | |
617 | return cmd_usage(cmdtp); | |
618 | } | |
619 | } | |
620 | } | |
621 | debug("Final value for argc=%d\n", argc); | |
622 | if (all && (argc == 0)) { | |
623 | /* Reset the whole environment */ | |
624 | set_default_env("## Resetting to default environment\n"); | |
625 | return 0; | |
626 | } | |
627 | if (!all && (argc > 0)) { | |
628 | /* Reset individual variables */ | |
629 | set_default_vars(argc, argv); | |
630 | return 0; | |
631 | } | |
632 | ||
633 | return cmd_usage(cmdtp); | |
ea882baf WD |
634 | } |
635 | ||
d09b1787 IG |
636 | static int do_env_delete(cmd_tbl_t *cmdtp, int flag, |
637 | int argc, char * const argv[]) | |
ea882baf WD |
638 | { |
639 | printf("Not implemented yet\n"); | |
640 | return 0; | |
641 | } | |
642 | ||
0c79cda0 | 643 | #ifdef CONFIG_CMD_EXPORTENV |
ea882baf | 644 | /* |
37f2fe74 | 645 | * env export [-t | -b | -c] [-s size] addr [var ...] |
ea882baf WD |
646 | * -t: export as text format; if size is given, data will be |
647 | * padded with '\0' bytes; if not, one terminating '\0' | |
648 | * will be added (which is included in the "filesize" | |
649 | * setting so you can for exmple copy this to flash and | |
650 | * keep the termination). | |
651 | * -b: export as binary format (name=value pairs separated by | |
652 | * '\0', list end marked by double "\0\0") | |
653 | * -c: export as checksum protected environment format as | |
654 | * used for example by "saveenv" command | |
37f2fe74 WD |
655 | * -s size: |
656 | * size of output buffer | |
ea882baf | 657 | * addr: memory address where environment gets stored |
37f2fe74 WD |
658 | * var... List of variable names that get included into the |
659 | * export. Without arguments, the whole environment gets | |
660 | * exported. | |
ea882baf WD |
661 | * |
662 | * With "-c" and size is NOT given, then the export command will | |
663 | * format the data as currently used for the persistent storage, | |
664 | * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and | |
665 | * prepend a valid CRC32 checksum and, in case of resundant | |
666 | * environment, a "current" redundancy flag. If size is given, this | |
667 | * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32 | |
668 | * checksum and redundancy flag will be inserted. | |
669 | * | |
670 | * With "-b" and "-t", always only the real data (including a | |
671 | * terminating '\0' byte) will be written; here the optional size | |
672 | * argument will be used to make sure not to overflow the user | |
673 | * provided buffer; the command will abort if the size is not | |
674 | * sufficient. Any remainign space will be '\0' padded. | |
675 | * | |
676 | * On successful return, the variable "filesize" will be set. | |
677 | * Note that filesize includes the trailing/terminating '\0' byte(s). | |
678 | * | |
679 | * Usage szenario: create a text snapshot/backup of the current settings: | |
680 | * | |
681 | * => env export -t 100000 | |
682 | * => era ${backup_addr} +${filesize} | |
683 | * => cp.b 100000 ${backup_addr} ${filesize} | |
684 | * | |
685 | * Re-import this snapshot, deleting all other settings: | |
686 | * | |
687 | * => env import -d -t ${backup_addr} | |
688 | */ | |
d09b1787 IG |
689 | static int do_env_export(cmd_tbl_t *cmdtp, int flag, |
690 | int argc, char * const argv[]) | |
ea882baf WD |
691 | { |
692 | char buf[32]; | |
693 | char *addr, *cmd, *res; | |
37f2fe74 | 694 | size_t size = 0; |
ea882baf WD |
695 | ssize_t len; |
696 | env_t *envp; | |
697 | char sep = '\n'; | |
698 | int chk = 0; | |
699 | int fmt = 0; | |
700 | ||
701 | cmd = *argv; | |
702 | ||
703 | while (--argc > 0 && **++argv == '-') { | |
704 | char *arg = *argv; | |
705 | while (*++arg) { | |
706 | switch (*arg) { | |
707 | case 'b': /* raw binary format */ | |
708 | if (fmt++) | |
709 | goto sep_err; | |
710 | sep = '\0'; | |
711 | break; | |
712 | case 'c': /* external checksum format */ | |
713 | if (fmt++) | |
714 | goto sep_err; | |
715 | sep = '\0'; | |
716 | chk = 1; | |
717 | break; | |
37f2fe74 WD |
718 | case 's': /* size given */ |
719 | if (--argc <= 0) | |
720 | return cmd_usage(cmdtp); | |
721 | size = simple_strtoul(*++argv, NULL, 16); | |
722 | goto NXTARG; | |
ea882baf WD |
723 | case 't': /* text format */ |
724 | if (fmt++) | |
725 | goto sep_err; | |
726 | sep = '\n'; | |
727 | break; | |
728 | default: | |
4c12eeb8 | 729 | return CMD_RET_USAGE; |
ea882baf WD |
730 | } |
731 | } | |
37f2fe74 | 732 | NXTARG: ; |
ea882baf WD |
733 | } |
734 | ||
f3c615b8 | 735 | if (argc < 1) |
4c12eeb8 | 736 | return CMD_RET_USAGE; |
8bde7f77 | 737 | |
ea882baf WD |
738 | addr = (char *)simple_strtoul(argv[0], NULL, 16); |
739 | ||
37f2fe74 | 740 | if (size) |
ea882baf | 741 | memset(addr, '\0', size); |
37f2fe74 WD |
742 | |
743 | argc--; | |
744 | argv++; | |
ea882baf WD |
745 | |
746 | if (sep) { /* export as text file */ | |
be11235a | 747 | len = hexport_r(&env_htab, sep, 0, &addr, size, argc, argv); |
ea882baf | 748 | if (len < 0) { |
d09b1787 | 749 | error("Cannot export environment: errno = %d\n", errno); |
ea882baf WD |
750 | return 1; |
751 | } | |
8c3aff52 | 752 | sprintf(buf, "%zX", (size_t)len); |
ea882baf WD |
753 | setenv("filesize", buf); |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
758 | envp = (env_t *)addr; | |
759 | ||
760 | if (chk) /* export as checksum protected block */ | |
761 | res = (char *)envp->data; | |
762 | else /* export as raw binary data */ | |
763 | res = addr; | |
764 | ||
be11235a | 765 | len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, argc, argv); |
ea882baf | 766 | if (len < 0) { |
d09b1787 | 767 | error("Cannot export environment: errno = %d\n", errno); |
ea882baf WD |
768 | return 1; |
769 | } | |
770 | ||
771 | if (chk) { | |
d09b1787 | 772 | envp->crc = crc32(0, envp->data, ENV_SIZE); |
ea882baf WD |
773 | #ifdef CONFIG_ENV_ADDR_REDUND |
774 | envp->flags = ACTIVE_FLAG; | |
775 | #endif | |
776 | } | |
f3c615b8 | 777 | sprintf(buf, "%zX", (size_t)(len + offsetof(env_t, data))); |
ea882baf WD |
778 | setenv("filesize", buf); |
779 | ||
780 | return 0; | |
781 | ||
782 | sep_err: | |
d09b1787 | 783 | printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd); |
ea882baf WD |
784 | return 1; |
785 | } | |
0c79cda0 | 786 | #endif |
ea882baf | 787 | |
0c79cda0 | 788 | #ifdef CONFIG_CMD_IMPORTENV |
ea882baf WD |
789 | /* |
790 | * env import [-d] [-t | -b | -c] addr [size] | |
791 | * -d: delete existing environment before importing; | |
792 | * otherwise overwrite / append to existion definitions | |
793 | * -t: assume text format; either "size" must be given or the | |
794 | * text data must be '\0' terminated | |
795 | * -b: assume binary format ('\0' separated, "\0\0" terminated) | |
796 | * -c: assume checksum protected environment format | |
797 | * addr: memory address to read from | |
798 | * size: length of input data; if missing, proper '\0' | |
799 | * termination is mandatory | |
800 | */ | |
d09b1787 IG |
801 | static int do_env_import(cmd_tbl_t *cmdtp, int flag, |
802 | int argc, char * const argv[]) | |
ea882baf WD |
803 | { |
804 | char *cmd, *addr; | |
805 | char sep = '\n'; | |
806 | int chk = 0; | |
807 | int fmt = 0; | |
808 | int del = 0; | |
809 | size_t size; | |
810 | ||
811 | cmd = *argv; | |
812 | ||
813 | while (--argc > 0 && **++argv == '-') { | |
814 | char *arg = *argv; | |
815 | while (*++arg) { | |
816 | switch (*arg) { | |
817 | case 'b': /* raw binary format */ | |
818 | if (fmt++) | |
819 | goto sep_err; | |
820 | sep = '\0'; | |
821 | break; | |
822 | case 'c': /* external checksum format */ | |
823 | if (fmt++) | |
824 | goto sep_err; | |
825 | sep = '\0'; | |
826 | chk = 1; | |
827 | break; | |
828 | case 't': /* text format */ | |
829 | if (fmt++) | |
830 | goto sep_err; | |
831 | sep = '\n'; | |
832 | break; | |
833 | case 'd': | |
834 | del = 1; | |
835 | break; | |
836 | default: | |
4c12eeb8 | 837 | return CMD_RET_USAGE; |
ea882baf WD |
838 | } |
839 | } | |
840 | } | |
841 | ||
f3c615b8 | 842 | if (argc < 1) |
4c12eeb8 | 843 | return CMD_RET_USAGE; |
ea882baf WD |
844 | |
845 | if (!fmt) | |
846 | printf("## Warning: defaulting to text format\n"); | |
847 | ||
848 | addr = (char *)simple_strtoul(argv[0], NULL, 16); | |
849 | ||
850 | if (argc == 2) { | |
851 | size = simple_strtoul(argv[1], NULL, 16); | |
852 | } else { | |
853 | char *s = addr; | |
854 | ||
855 | size = 0; | |
856 | ||
857 | while (size < MAX_ENV_SIZE) { | |
858 | if ((*s == sep) && (*(s+1) == '\0')) | |
859 | break; | |
860 | ++s; | |
861 | ++size; | |
862 | } | |
863 | if (size == MAX_ENV_SIZE) { | |
864 | printf("## Warning: Input data exceeds %d bytes" | |
865 | " - truncated\n", MAX_ENV_SIZE); | |
866 | } | |
d3f80c77 | 867 | size += 2; |
79afc88d | 868 | printf("## Info: input data size = %zu = 0x%zX\n", size, size); |
ea882baf WD |
869 | } |
870 | ||
871 | if (chk) { | |
872 | uint32_t crc; | |
873 | env_t *ep = (env_t *)addr; | |
874 | ||
875 | size -= offsetof(env_t, data); | |
876 | memcpy(&crc, &ep->crc, sizeof(crc)); | |
877 | ||
878 | if (crc32(0, ep->data, size) != crc) { | |
879 | puts("## Error: bad CRC, import failed\n"); | |
880 | return 1; | |
881 | } | |
882 | addr = (char *)ep->data; | |
883 | } | |
884 | ||
348b1f1c | 885 | if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR, |
c4e0057f | 886 | 0, NULL) == 0) { |
ea882baf WD |
887 | error("Environment import failed: errno = %d\n", errno); |
888 | return 1; | |
889 | } | |
890 | gd->flags |= GD_FLG_ENV_READY; | |
891 | ||
892 | return 0; | |
893 | ||
894 | sep_err: | |
895 | printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", | |
896 | cmd); | |
897 | return 1; | |
898 | } | |
0c79cda0 | 899 | #endif |
ea882baf | 900 | |
ea882baf WD |
901 | /* |
902 | * New command line interface: "env" command with subcommands | |
903 | */ | |
904 | static cmd_tbl_t cmd_env_sub[] = { | |
905 | #if defined(CONFIG_CMD_ASKENV) | |
906 | U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""), | |
907 | #endif | |
908 | U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""), | |
909 | U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete, "", ""), | |
910 | #if defined(CONFIG_CMD_EDITENV) | |
911 | U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""), | |
912 | #endif | |
5e2b3e0c JH |
913 | #if defined(CONFIG_CMD_ENV_CALLBACK) |
914 | U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""), | |
915 | #endif | |
0c79cda0 | 916 | #if defined(CONFIG_CMD_EXPORTENV) |
ea882baf | 917 | U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""), |
0c79cda0 | 918 | #endif |
a000b795 KP |
919 | #if defined(CONFIG_CMD_GREPENV) |
920 | U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""), | |
921 | #endif | |
0c79cda0 | 922 | #if defined(CONFIG_CMD_IMPORTENV) |
ea882baf | 923 | U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""), |
0c79cda0 | 924 | #endif |
ea882baf WD |
925 | U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""), |
926 | #if defined(CONFIG_CMD_RUN) | |
927 | U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""), | |
928 | #endif | |
929 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) | |
930 | U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""), | |
931 | #endif | |
932 | U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""), | |
933 | }; | |
934 | ||
2e5167cc | 935 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) |
60f7da1f HS |
936 | void env_reloc(void) |
937 | { | |
938 | fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); | |
939 | } | |
940 | #endif | |
941 | ||
f3c615b8 | 942 | static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
ea882baf WD |
943 | { |
944 | cmd_tbl_t *cp; | |
945 | ||
5904da02 | 946 | if (argc < 2) |
4c12eeb8 | 947 | return CMD_RET_USAGE; |
5904da02 | 948 | |
ea882baf WD |
949 | /* drop initial "env" arg */ |
950 | argc--; | |
951 | argv++; | |
952 | ||
953 | cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); | |
954 | ||
955 | if (cp) | |
956 | return cp->cmd(cmdtp, flag, argc, argv); | |
957 | ||
4c12eeb8 | 958 | return CMD_RET_USAGE; |
ea882baf WD |
959 | } |
960 | ||
088f1b19 KP |
961 | #ifdef CONFIG_SYS_LONGHELP |
962 | static char env_help_text[] = | |
ea882baf WD |
963 | #if defined(CONFIG_CMD_ASKENV) |
964 | "ask name [message] [size] - ask for environment variable\nenv " | |
5e2b3e0c JH |
965 | #endif |
966 | #if defined(CONFIG_CMD_ENV_CALLBACK) | |
967 | "callbacks - print callbacks and their associated variables\nenv " | |
ea882baf | 968 | #endif |
b64b7c3d GF |
969 | "default [-f] -a - [forcibly] reset default environment\n" |
970 | "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n" | |
ea882baf WD |
971 | #if defined(CONFIG_CMD_EDITENV) |
972 | "env edit name - edit environment variable\n" | |
973 | #endif | |
4796bc4b | 974 | #if defined(CONFIG_CMD_EXPORTENV) |
37f2fe74 | 975 | "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n" |
4796bc4b | 976 | #endif |
a000b795 KP |
977 | #if defined(CONFIG_CMD_GREPENV) |
978 | "env grep string [...] - search environment\n" | |
979 | #endif | |
4796bc4b | 980 | #if defined(CONFIG_CMD_IMPORTENV) |
a000b795 | 981 | "env import [-d] [-t | -b | -c] addr [size] - import environment\n" |
4796bc4b | 982 | #endif |
be11235a | 983 | "env print [-a | name ...] - print environment\n" |
ea882baf WD |
984 | #if defined(CONFIG_CMD_RUN) |
985 | "env run var [...] - run commands in an environment variable\n" | |
986 | #endif | |
d798a9b5 | 987 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
ea882baf | 988 | "env save - save environment\n" |
d798a9b5 | 989 | #endif |
088f1b19 KP |
990 | "env set [-f] name [arg ...]\n"; |
991 | #endif | |
992 | ||
993 | U_BOOT_CMD( | |
994 | env, CONFIG_SYS_MAXARGS, 1, do_env, | |
995 | "environment handling commands", env_help_text | |
ea882baf WD |
996 | ); |
997 | ||
998 | /* | |
999 | * Old command line interface, kept for compatibility | |
1000 | */ | |
8bde7f77 | 1001 | |
246c6922 | 1002 | #if defined(CONFIG_CMD_EDITENV) |
722b061b | 1003 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1004 | editenv, 2, 0, do_env_edit, |
246c6922 PT |
1005 | "edit environment variable", |
1006 | "name\n" | |
722b061b MF |
1007 | " - edit environment variable 'name'", |
1008 | var_complete | |
246c6922 PT |
1009 | ); |
1010 | #endif | |
1011 | ||
722b061b | 1012 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1013 | printenv, CONFIG_SYS_MAXARGS, 1, do_env_print, |
2fb2604d | 1014 | "print environment variables", |
be11235a | 1015 | "[-a]\n - print [all] values of all environment variables\n" |
8bde7f77 | 1016 | "printenv name ...\n" |
722b061b MF |
1017 | " - print value of environment variable 'name'", |
1018 | var_complete | |
8bde7f77 WD |
1019 | ); |
1020 | ||
a000b795 KP |
1021 | #ifdef CONFIG_CMD_GREPENV |
1022 | U_BOOT_CMD_COMPLETE( | |
1023 | grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep, | |
1024 | "search environment variables", | |
1025 | "string ...\n" | |
1026 | " - list environment name=value pairs matching 'string'", | |
1027 | var_complete | |
1028 | ); | |
1029 | #endif | |
1030 | ||
722b061b | 1031 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1032 | setenv, CONFIG_SYS_MAXARGS, 0, do_env_set, |
2fb2604d | 1033 | "set environment variables", |
8bde7f77 WD |
1034 | "name value ...\n" |
1035 | " - set environment variable 'name' to 'value ...'\n" | |
1036 | "setenv name\n" | |
722b061b MF |
1037 | " - delete environment variable 'name'", |
1038 | var_complete | |
8bde7f77 WD |
1039 | ); |
1040 | ||
c76fe474 | 1041 | #if defined(CONFIG_CMD_ASKENV) |
8bde7f77 | 1042 | |
0d498393 | 1043 | U_BOOT_CMD( |
ea882baf | 1044 | askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask, |
2fb2604d | 1045 | "get environment variables from stdin", |
8bde7f77 WD |
1046 | "name [message] [size]\n" |
1047 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
1048 | "askenv name\n" | |
1049 | " - get environment variable 'name' from stdin\n" | |
1050 | "askenv name size\n" | |
1051 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
1052 | "askenv name [message] size\n" | |
1053 | " - display 'message' string and get environment variable 'name'" | |
a89c33db | 1054 | "from stdin (max 'size' chars)" |
8bde7f77 | 1055 | ); |
90253178 | 1056 | #endif |
8bde7f77 | 1057 | |
c76fe474 | 1058 | #if defined(CONFIG_CMD_RUN) |
722b061b | 1059 | U_BOOT_CMD_COMPLETE( |
6d0f6bcf | 1060 | run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d | 1061 | "run commands in an environment variable", |
8bde7f77 | 1062 | "var [...]\n" |
722b061b MF |
1063 | " - run the commands in the environment variable(s) 'var'", |
1064 | var_complete | |
8bde7f77 | 1065 | ); |
90253178 | 1066 | #endif |
7ac2fe2d | 1067 | #endif /* CONFIG_SPL_BUILD */ |