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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; | |
24ab5a19 | 203 | int env_flag = H_INTERACTIVE; |
c3f65258 | 204 | |
24ab5a19 JH |
205 | debug("Initial value for argc=%d\n", argc); |
206 | while (argc > 1 && **(argv + 1) == '-') { | |
207 | char *arg = *++argv; | |
208 | ||
209 | --argc; | |
210 | while (*++arg) { | |
211 | switch (*arg) { | |
212 | case 'f': /* force */ | |
213 | env_flag |= H_FORCE; | |
214 | break; | |
215 | default: | |
216 | return CMD_RET_USAGE; | |
217 | } | |
218 | } | |
219 | } | |
220 | debug("Final value for argc=%d\n", argc); | |
c3f65258 GF |
221 | name = argv[1]; |
222 | value = argv[2]; | |
223 | ||
224 | if (strchr(name, '=')) { | |
225 | printf("## Error: illegal character '='" | |
226 | "in variable name \"%s\"\n", name); | |
227 | return 1; | |
228 | } | |
229 | ||
230 | env_id++; | |
c3f65258 | 231 | |
a68d3ed0 | 232 | /* Delete only ? */ |
d09b1787 | 233 | if (argc < 3 || argv[2] == NULL) { |
24ab5a19 | 234 | int rc = hdelete_r(name, &env_htab, env_flag); |
ea882baf | 235 | return !rc; |
a68d3ed0 WD |
236 | } |
237 | ||
238 | /* | |
ea882baf | 239 | * Insert / replace new value |
a68d3ed0 | 240 | */ |
f3c615b8 | 241 | for (i = 2, len = 0; i < argc; ++i) |
a68d3ed0 | 242 | len += strlen(argv[i]) + 1; |
f3c615b8 ML |
243 | |
244 | value = malloc(len); | |
245 | if (value == NULL) { | |
ea882baf | 246 | printf("## Can't malloc %d bytes\n", len); |
a68d3ed0 WD |
247 | return 1; |
248 | } | |
f3c615b8 | 249 | for (i = 2, s = value; i < argc; ++i) { |
ea882baf | 250 | char *v = argv[i]; |
a68d3ed0 | 251 | |
ea882baf | 252 | while ((*s++ = *v++) != '\0') |
a68d3ed0 | 253 | ; |
d09b1787 | 254 | *(s - 1) = ' '; |
ea882baf WD |
255 | } |
256 | if (s != value) | |
257 | *--s = '\0'; | |
258 | ||
d09b1787 IG |
259 | e.key = name; |
260 | e.data = value; | |
24ab5a19 | 261 | hsearch_r(e, ENTER, &ep, &env_htab, env_flag); |
ea882baf WD |
262 | free(value); |
263 | if (!ep) { | |
264 | printf("## Error inserting \"%s\" variable, errno=%d\n", | |
265 | name, errno); | |
266 | return 1; | |
a68d3ed0 | 267 | } |
a68d3ed0 | 268 | |
a68d3ed0 WD |
269 | return 0; |
270 | } | |
271 | ||
84b5e802 | 272 | int setenv(const char *varname, const char *varvalue) |
a68d3ed0 | 273 | { |
84b5e802 WD |
274 | const char * const argv[4] = { "setenv", varname, varvalue, NULL }; |
275 | ||
d09b1787 | 276 | if (varvalue == NULL || varvalue[0] == '\0') |
84b5e802 | 277 | return _do_env_set(0, 2, (char * const *)argv); |
9ffd451a | 278 | else |
84b5e802 | 279 | return _do_env_set(0, 3, (char * const *)argv); |
a68d3ed0 WD |
280 | } |
281 | ||
d67f10ce SG |
282 | /** |
283 | * Set an environment variable to an integer value | |
284 | * | |
285 | * @param varname Environmet variable to set | |
286 | * @param value Value to set it to | |
287 | * @return 0 if ok, 1 on error | |
288 | */ | |
289 | int setenv_ulong(const char *varname, ulong value) | |
290 | { | |
291 | /* TODO: this should be unsigned */ | |
292 | char *str = simple_itoa(value); | |
293 | ||
294 | return setenv(varname, str); | |
295 | } | |
296 | ||
297 | /** | |
bfc59966 | 298 | * Set an environment variable to an value in hex |
d67f10ce SG |
299 | * |
300 | * @param varname Environmet variable to set | |
bfc59966 | 301 | * @param value Value to set it to |
d67f10ce SG |
302 | * @return 0 if ok, 1 on error |
303 | */ | |
bfc59966 | 304 | int setenv_hex(const char *varname, ulong value) |
d67f10ce SG |
305 | { |
306 | char str[17]; | |
307 | ||
bfc59966 | 308 | sprintf(str, "%lx", value); |
d67f10ce SG |
309 | return setenv(varname, str); |
310 | } | |
311 | ||
7ac2fe2d | 312 | #ifndef CONFIG_SPL_BUILD |
088f1b19 | 313 | static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 314 | { |
47e26b1b | 315 | if (argc < 2) |
4c12eeb8 | 316 | return CMD_RET_USAGE; |
a68d3ed0 | 317 | |
ea882baf | 318 | return _do_env_set(flag, argc, argv); |
a68d3ed0 WD |
319 | } |
320 | ||
ea882baf | 321 | /* |
a68d3ed0 WD |
322 | * Prompt for environment variable |
323 | */ | |
c76fe474 | 324 | #if defined(CONFIG_CMD_ASKENV) |
f3c615b8 | 325 | int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 326 | { |
6d0f6bcf JCPV |
327 | char message[CONFIG_SYS_CBSIZE]; |
328 | int size = CONFIG_SYS_CBSIZE - 1; | |
ea882baf | 329 | int i, len, pos; |
a68d3ed0 WD |
330 | char *local_args[4]; |
331 | ||
332 | local_args[0] = argv[0]; | |
333 | local_args[1] = argv[1]; | |
334 | local_args[2] = NULL; | |
335 | local_args[3] = NULL; | |
336 | ||
a68d3ed0 WD |
337 | /* Check the syntax */ |
338 | switch (argc) { | |
339 | case 1: | |
4c12eeb8 | 340 | return CMD_RET_USAGE; |
a68d3ed0 | 341 | |
ea882baf WD |
342 | case 2: /* env_ask envname */ |
343 | sprintf(message, "Please enter '%s':", argv[1]); | |
a68d3ed0 WD |
344 | break; |
345 | ||
ea882baf WD |
346 | case 3: /* env_ask envname size */ |
347 | sprintf(message, "Please enter '%s':", argv[1]); | |
348 | size = simple_strtoul(argv[2], NULL, 10); | |
a68d3ed0 WD |
349 | break; |
350 | ||
ea882baf | 351 | default: /* env_ask envname message1 ... messagen size */ |
f3c615b8 ML |
352 | for (i = 2, pos = 0; i < argc - 1; i++) { |
353 | if (pos) | |
a68d3ed0 | 354 | message[pos++] = ' '; |
f3c615b8 | 355 | |
d09b1787 | 356 | strcpy(message + pos, argv[i]); |
a68d3ed0 WD |
357 | pos += strlen(argv[i]); |
358 | } | |
d09b1787 | 359 | |
a68d3ed0 | 360 | message[pos] = '\0'; |
ea882baf | 361 | size = simple_strtoul(argv[argc - 1], NULL, 10); |
a68d3ed0 WD |
362 | break; |
363 | } | |
364 | ||
6d0f6bcf JCPV |
365 | if (size >= CONFIG_SYS_CBSIZE) |
366 | size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
367 | |
368 | if (size <= 0) | |
369 | return 1; | |
370 | ||
371 | /* prompt for input */ | |
ea882baf | 372 | len = readline(message); |
a68d3ed0 WD |
373 | |
374 | if (size < len) | |
375 | console_buffer[size] = '\0'; | |
376 | ||
377 | len = 2; | |
378 | if (console_buffer[0] != '\0') { | |
379 | local_args[2] = console_buffer; | |
380 | len = 3; | |
381 | } | |
382 | ||
383 | /* Continue calling setenv code */ | |
ea882baf | 384 | return _do_env_set(flag, len, local_args); |
a68d3ed0 | 385 | } |
90253178 | 386 | #endif |
a68d3ed0 | 387 | |
5e2b3e0c JH |
388 | #if defined(CONFIG_CMD_ENV_CALLBACK) |
389 | static int print_static_binding(const char *var_name, const char *callback_name) | |
390 | { | |
391 | printf("\t%-20s %-20s\n", var_name, callback_name); | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
396 | static int print_active_callback(ENTRY *entry) | |
397 | { | |
398 | struct env_clbk_tbl *clbkp; | |
399 | int i; | |
400 | int num_callbacks; | |
401 | ||
402 | if (entry->callback == NULL) | |
403 | return 0; | |
404 | ||
405 | /* look up the callback in the linker-list */ | |
406 | num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk); | |
407 | for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk); | |
408 | i < num_callbacks; | |
409 | i++, clbkp++) { | |
410 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) | |
411 | if (entry->callback == clbkp->callback + gd->reloc_off) | |
412 | #else | |
413 | if (entry->callback == clbkp->callback) | |
414 | #endif | |
415 | break; | |
416 | } | |
417 | ||
418 | if (i == num_callbacks) | |
419 | /* this should probably never happen, but just in case... */ | |
420 | printf("\t%-20s %p\n", entry->key, entry->callback); | |
421 | else | |
422 | printf("\t%-20s %-20s\n", entry->key, clbkp->name); | |
423 | ||
424 | return 0; | |
425 | } | |
426 | ||
427 | /* | |
428 | * Print the callbacks available and what they are bound to | |
429 | */ | |
430 | int do_env_callback(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
431 | { | |
432 | struct env_clbk_tbl *clbkp; | |
433 | int i; | |
434 | int num_callbacks; | |
435 | ||
436 | /* Print the available callbacks */ | |
437 | puts("Available callbacks:\n"); | |
438 | puts("\tCallback Name\n"); | |
439 | puts("\t-------------\n"); | |
440 | num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk); | |
441 | for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk); | |
442 | i < num_callbacks; | |
443 | i++, clbkp++) | |
444 | printf("\t%s\n", clbkp->name); | |
445 | puts("\n"); | |
446 | ||
447 | /* Print the static bindings that may exist */ | |
448 | puts("Static callback bindings:\n"); | |
449 | printf("\t%-20s %-20s\n", "Variable Name", "Callback Name"); | |
450 | printf("\t%-20s %-20s\n", "-------------", "-------------"); | |
451 | env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding); | |
452 | puts("\n"); | |
453 | ||
454 | /* walk through each variable and print the callback if it has one */ | |
455 | puts("Active callback bindings:\n"); | |
456 | printf("\t%-20s %-20s\n", "Variable Name", "Callback Name"); | |
457 | printf("\t%-20s %-20s\n", "-------------", "-------------"); | |
458 | hwalk_r(&env_htab, print_active_callback); | |
459 | return 0; | |
460 | } | |
461 | #endif | |
462 | ||
fffad71b JH |
463 | #if defined(CONFIG_CMD_ENV_FLAGS) |
464 | static int print_static_flags(const char *var_name, const char *flags) | |
465 | { | |
466 | enum env_flags_vartype type = env_flags_parse_vartype(flags); | |
267541f7 | 467 | enum env_flags_varaccess access = env_flags_parse_varaccess(flags); |
fffad71b | 468 | |
267541f7 JH |
469 | printf("\t%-20s %-20s %-20s\n", var_name, |
470 | env_flags_get_vartype_name(type), | |
471 | env_flags_get_varaccess_name(access)); | |
fffad71b JH |
472 | |
473 | return 0; | |
474 | } | |
475 | ||
476 | static int print_active_flags(ENTRY *entry) | |
477 | { | |
478 | enum env_flags_vartype type; | |
267541f7 | 479 | enum env_flags_varaccess access; |
fffad71b JH |
480 | |
481 | if (entry->flags == 0) | |
482 | return 0; | |
483 | ||
484 | type = (enum env_flags_vartype) | |
485 | (entry->flags & ENV_FLAGS_VARTYPE_BIN_MASK); | |
267541f7 JH |
486 | access = env_flags_parse_varaccess_from_binflags(entry->flags); |
487 | printf("\t%-20s %-20s %-20s\n", entry->key, | |
488 | env_flags_get_vartype_name(type), | |
489 | env_flags_get_varaccess_name(access)); | |
fffad71b JH |
490 | |
491 | return 0; | |
492 | } | |
493 | ||
494 | /* | |
495 | * Print the flags available and what variables have flags | |
496 | */ | |
497 | int do_env_flags(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
498 | { | |
499 | /* Print the available variable types */ | |
500 | printf("Available variable type flags (position %d):\n", | |
501 | ENV_FLAGS_VARTYPE_LOC); | |
502 | puts("\tFlag\tVariable Type Name\n"); | |
503 | puts("\t----\t------------------\n"); | |
504 | env_flags_print_vartypes(); | |
505 | puts("\n"); | |
506 | ||
267541f7 JH |
507 | /* Print the available variable access types */ |
508 | printf("Available variable access flags (position %d):\n", | |
509 | ENV_FLAGS_VARACCESS_LOC); | |
510 | puts("\tFlag\tVariable Access Name\n"); | |
511 | puts("\t----\t--------------------\n"); | |
512 | env_flags_print_varaccess(); | |
513 | puts("\n"); | |
514 | ||
fffad71b JH |
515 | /* Print the static flags that may exist */ |
516 | puts("Static flags:\n"); | |
267541f7 JH |
517 | printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type", |
518 | "Variable Access"); | |
519 | printf("\t%-20s %-20s %-20s\n", "-------------", "-------------", | |
520 | "---------------"); | |
fffad71b JH |
521 | env_attr_walk(ENV_FLAGS_LIST_STATIC, print_static_flags); |
522 | puts("\n"); | |
523 | ||
524 | /* walk through each variable and print the flags if non-default */ | |
525 | puts("Active flags:\n"); | |
267541f7 JH |
526 | printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type", |
527 | "Variable Access"); | |
528 | printf("\t%-20s %-20s %-20s\n", "-------------", "-------------", | |
529 | "---------------"); | |
fffad71b JH |
530 | hwalk_r(&env_htab, print_active_flags); |
531 | return 0; | |
532 | } | |
533 | #endif | |
534 | ||
ea882baf | 535 | /* |
246c6922 PT |
536 | * Interactively edit an environment variable |
537 | */ | |
538 | #if defined(CONFIG_CMD_EDITENV) | |
088f1b19 KP |
539 | static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, |
540 | char * const argv[]) | |
246c6922 PT |
541 | { |
542 | char buffer[CONFIG_SYS_CBSIZE]; | |
543 | char *init_val; | |
246c6922 | 544 | |
47e26b1b | 545 | if (argc < 2) |
4c12eeb8 | 546 | return CMD_RET_USAGE; |
246c6922 PT |
547 | |
548 | /* Set read buffer to initial value or empty sting */ | |
549 | init_val = getenv(argv[1]); | |
550 | if (init_val) | |
7fcd9bbd | 551 | sprintf(buffer, "%s", init_val); |
246c6922 PT |
552 | else |
553 | buffer[0] = '\0'; | |
554 | ||
18a3cce9 JH |
555 | if (readline_into_buffer("edit: ", buffer, 0) < 0) |
556 | return 1; | |
246c6922 PT |
557 | |
558 | return setenv(argv[1], buffer); | |
559 | } | |
560 | #endif /* CONFIG_CMD_EDITENV */ | |
7ac2fe2d | 561 | #endif /* CONFIG_SPL_BUILD */ |
246c6922 | 562 | |
ea882baf | 563 | /* |
a68d3ed0 WD |
564 | * Look up variable from environment, |
565 | * return address of storage for that variable, | |
566 | * or NULL if not found | |
567 | */ | |
84b5e802 | 568 | char *getenv(const char *name) |
a68d3ed0 | 569 | { |
d09b1787 | 570 | if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */ |
ea882baf | 571 | ENTRY e, *ep; |
a68d3ed0 | 572 | |
91a76751 | 573 | WATCHDOG_RESET(); |
2a3cb020 | 574 | |
d09b1787 IG |
575 | e.key = name; |
576 | e.data = NULL; | |
c4e0057f | 577 | hsearch_r(e, FIND, &ep, &env_htab, 0); |
91a76751 | 578 | |
f3c615b8 | 579 | return ep ? ep->data : NULL; |
a68d3ed0 WD |
580 | } |
581 | ||
ea882baf | 582 | /* restricted capabilities before import */ |
ea882baf WD |
583 | if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0) |
584 | return (char *)(gd->env_buf); | |
91a76751 | 585 | |
ea882baf | 586 | return NULL; |
a68d3ed0 WD |
587 | } |
588 | ||
ea882baf WD |
589 | /* |
590 | * Look up variable from environment for restricted C runtime env. | |
591 | */ | |
84b5e802 | 592 | int getenv_f(const char *name, char *buf, unsigned len) |
a68d3ed0 WD |
593 | { |
594 | int i, nxt; | |
595 | ||
d09b1787 | 596 | for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) { |
a68d3ed0 WD |
597 | int val, n; |
598 | ||
f3c615b8 ML |
599 | for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) { |
600 | if (nxt >= CONFIG_ENV_SIZE) | |
601 | return -1; | |
a68d3ed0 | 602 | } |
f3c615b8 ML |
603 | |
604 | val = envmatch((uchar *)name, i); | |
605 | if (val < 0) | |
a68d3ed0 | 606 | continue; |
9ed4a958 | 607 | |
a68d3ed0 | 608 | /* found; copy out */ |
f3c615b8 | 609 | for (n = 0; n < len; ++n, ++buf) { |
d09b1787 IG |
610 | *buf = env_get_char(val++); |
611 | if (*buf == '\0') | |
9ed4a958 WD |
612 | return n; |
613 | } | |
614 | ||
615 | if (n) | |
616 | *--buf = '\0'; | |
617 | ||
a02a884b WD |
618 | printf("env_buf [%d bytes] too small for value of \"%s\"\n", |
619 | len, name); | |
9ed4a958 WD |
620 | |
621 | return n; | |
a68d3ed0 | 622 | } |
d09b1787 | 623 | |
f3c615b8 | 624 | return -1; |
a68d3ed0 WD |
625 | } |
626 | ||
4a9b4131 SG |
627 | /** |
628 | * Decode the integer value of an environment variable and return it. | |
629 | * | |
630 | * @param name Name of environemnt variable | |
631 | * @param base Number base to use (normally 10, or 16 for hex) | |
632 | * @param default_val Default value to return if the variable is not | |
633 | * found | |
634 | * @return the decoded value, or default_val if not found | |
635 | */ | |
636 | ulong getenv_ulong(const char *name, int base, ulong default_val) | |
637 | { | |
638 | /* | |
639 | * We can use getenv() here, even before relocation, since the | |
640 | * environment variable value is an integer and thus short. | |
641 | */ | |
642 | const char *str = getenv(name); | |
643 | ||
644 | return str ? simple_strtoul(str, NULL, base) : default_val; | |
645 | } | |
646 | ||
7ac2fe2d | 647 | #ifndef CONFIG_SPL_BUILD |
bdab39d3 | 648 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
088f1b19 KP |
649 | static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, |
650 | char * const argv[]) | |
a68d3ed0 | 651 | { |
f3c615b8 | 652 | printf("Saving Environment to %s...\n", env_name_spec); |
a68d3ed0 | 653 | |
f3c615b8 | 654 | return saveenv() ? 1 : 0; |
a68d3ed0 | 655 | } |
8bde7f77 | 656 | |
ba69dc26 | 657 | U_BOOT_CMD( |
ea882baf | 658 | saveenv, 1, 0, do_env_save, |
2fb2604d | 659 | "save environment variables to persistent storage", |
a89c33db | 660 | "" |
ba69dc26 | 661 | ); |
a68d3ed0 | 662 | #endif |
7ac2fe2d | 663 | #endif /* CONFIG_SPL_BUILD */ |
a68d3ed0 WD |
664 | |
665 | ||
ea882baf | 666 | /* |
a68d3ed0 WD |
667 | * Match a name / name=value pair |
668 | * | |
669 | * s1 is either a simple 'name', or a 'name=value' pair. | |
670 | * i2 is the environment index for a 'name2=value2' pair. | |
d09b1787 | 671 | * If the names match, return the index for the value2, else -1. |
a68d3ed0 | 672 | */ |
f3c615b8 | 673 | int envmatch(uchar *s1, int i2) |
a68d3ed0 | 674 | { |
586197df JH |
675 | if (s1 == NULL) |
676 | return -1; | |
677 | ||
a68d3ed0 WD |
678 | while (*s1 == env_get_char(i2++)) |
679 | if (*s1++ == '=') | |
f3c615b8 | 680 | return i2; |
d09b1787 | 681 | |
a68d3ed0 | 682 | if (*s1 == '\0' && env_get_char(i2-1) == '=') |
f3c615b8 | 683 | return i2; |
d09b1787 | 684 | |
f3c615b8 | 685 | return -1; |
a68d3ed0 | 686 | } |
8bde7f77 | 687 | |
7ac2fe2d | 688 | #ifndef CONFIG_SPL_BUILD |
b64b7c3d | 689 | static int do_env_default(cmd_tbl_t *cmdtp, int __flag, |
d09b1787 | 690 | int argc, char * const argv[]) |
ea882baf | 691 | { |
b64b7c3d | 692 | int all = 0, flag = 0; |
f3c615b8 | 693 | |
b64b7c3d GF |
694 | debug("Initial value for argc=%d\n", argc); |
695 | while (--argc > 0 && **++argv == '-') { | |
696 | char *arg = *argv; | |
697 | ||
698 | while (*++arg) { | |
699 | switch (*arg) { | |
700 | case 'a': /* default all */ | |
701 | all = 1; | |
702 | break; | |
703 | case 'f': /* force */ | |
704 | flag |= H_FORCE; | |
705 | break; | |
706 | default: | |
707 | return cmd_usage(cmdtp); | |
708 | } | |
709 | } | |
710 | } | |
711 | debug("Final value for argc=%d\n", argc); | |
712 | if (all && (argc == 0)) { | |
713 | /* Reset the whole environment */ | |
714 | set_default_env("## Resetting to default environment\n"); | |
715 | return 0; | |
716 | } | |
717 | if (!all && (argc > 0)) { | |
718 | /* Reset individual variables */ | |
719 | set_default_vars(argc, argv); | |
720 | return 0; | |
721 | } | |
722 | ||
723 | return cmd_usage(cmdtp); | |
ea882baf WD |
724 | } |
725 | ||
d09b1787 IG |
726 | static int do_env_delete(cmd_tbl_t *cmdtp, int flag, |
727 | int argc, char * const argv[]) | |
ea882baf | 728 | { |
9d8d661d JH |
729 | int env_flag = H_INTERACTIVE; |
730 | int ret = 0; | |
731 | ||
732 | debug("Initial value for argc=%d\n", argc); | |
733 | while (argc > 1 && **(argv + 1) == '-') { | |
734 | char *arg = *++argv; | |
735 | ||
736 | --argc; | |
737 | while (*++arg) { | |
738 | switch (*arg) { | |
739 | case 'f': /* force */ | |
740 | env_flag |= H_FORCE; | |
741 | break; | |
742 | default: | |
743 | return CMD_RET_USAGE; | |
744 | } | |
745 | } | |
746 | } | |
747 | debug("Final value for argc=%d\n", argc); | |
748 | ||
749 | env_id++; | |
750 | ||
751 | while (--argc > 0) { | |
752 | char *name = *++argv; | |
753 | ||
754 | if (!hdelete_r(name, &env_htab, env_flag)) | |
755 | ret = 1; | |
756 | } | |
757 | ||
758 | return ret; | |
ea882baf WD |
759 | } |
760 | ||
0c79cda0 | 761 | #ifdef CONFIG_CMD_EXPORTENV |
ea882baf | 762 | /* |
37f2fe74 | 763 | * env export [-t | -b | -c] [-s size] addr [var ...] |
ea882baf WD |
764 | * -t: export as text format; if size is given, data will be |
765 | * padded with '\0' bytes; if not, one terminating '\0' | |
766 | * will be added (which is included in the "filesize" | |
767 | * setting so you can for exmple copy this to flash and | |
768 | * keep the termination). | |
769 | * -b: export as binary format (name=value pairs separated by | |
770 | * '\0', list end marked by double "\0\0") | |
771 | * -c: export as checksum protected environment format as | |
772 | * used for example by "saveenv" command | |
37f2fe74 WD |
773 | * -s size: |
774 | * size of output buffer | |
ea882baf | 775 | * addr: memory address where environment gets stored |
37f2fe74 WD |
776 | * var... List of variable names that get included into the |
777 | * export. Without arguments, the whole environment gets | |
778 | * exported. | |
ea882baf WD |
779 | * |
780 | * With "-c" and size is NOT given, then the export command will | |
781 | * format the data as currently used for the persistent storage, | |
782 | * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and | |
783 | * prepend a valid CRC32 checksum and, in case of resundant | |
784 | * environment, a "current" redundancy flag. If size is given, this | |
785 | * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32 | |
786 | * checksum and redundancy flag will be inserted. | |
787 | * | |
788 | * With "-b" and "-t", always only the real data (including a | |
789 | * terminating '\0' byte) will be written; here the optional size | |
790 | * argument will be used to make sure not to overflow the user | |
791 | * provided buffer; the command will abort if the size is not | |
792 | * sufficient. Any remainign space will be '\0' padded. | |
793 | * | |
794 | * On successful return, the variable "filesize" will be set. | |
795 | * Note that filesize includes the trailing/terminating '\0' byte(s). | |
796 | * | |
797 | * Usage szenario: create a text snapshot/backup of the current settings: | |
798 | * | |
799 | * => env export -t 100000 | |
800 | * => era ${backup_addr} +${filesize} | |
801 | * => cp.b 100000 ${backup_addr} ${filesize} | |
802 | * | |
803 | * Re-import this snapshot, deleting all other settings: | |
804 | * | |
805 | * => env import -d -t ${backup_addr} | |
806 | */ | |
d09b1787 IG |
807 | static int do_env_export(cmd_tbl_t *cmdtp, int flag, |
808 | int argc, char * const argv[]) | |
ea882baf WD |
809 | { |
810 | char buf[32]; | |
811 | char *addr, *cmd, *res; | |
37f2fe74 | 812 | size_t size = 0; |
ea882baf WD |
813 | ssize_t len; |
814 | env_t *envp; | |
815 | char sep = '\n'; | |
816 | int chk = 0; | |
817 | int fmt = 0; | |
818 | ||
819 | cmd = *argv; | |
820 | ||
821 | while (--argc > 0 && **++argv == '-') { | |
822 | char *arg = *argv; | |
823 | while (*++arg) { | |
824 | switch (*arg) { | |
825 | case 'b': /* raw binary format */ | |
826 | if (fmt++) | |
827 | goto sep_err; | |
828 | sep = '\0'; | |
829 | break; | |
830 | case 'c': /* external checksum format */ | |
831 | if (fmt++) | |
832 | goto sep_err; | |
833 | sep = '\0'; | |
834 | chk = 1; | |
835 | break; | |
37f2fe74 WD |
836 | case 's': /* size given */ |
837 | if (--argc <= 0) | |
838 | return cmd_usage(cmdtp); | |
839 | size = simple_strtoul(*++argv, NULL, 16); | |
840 | goto NXTARG; | |
ea882baf WD |
841 | case 't': /* text format */ |
842 | if (fmt++) | |
843 | goto sep_err; | |
844 | sep = '\n'; | |
845 | break; | |
846 | default: | |
4c12eeb8 | 847 | return CMD_RET_USAGE; |
ea882baf WD |
848 | } |
849 | } | |
37f2fe74 | 850 | NXTARG: ; |
ea882baf WD |
851 | } |
852 | ||
f3c615b8 | 853 | if (argc < 1) |
4c12eeb8 | 854 | return CMD_RET_USAGE; |
8bde7f77 | 855 | |
ea882baf WD |
856 | addr = (char *)simple_strtoul(argv[0], NULL, 16); |
857 | ||
37f2fe74 | 858 | if (size) |
ea882baf | 859 | memset(addr, '\0', size); |
37f2fe74 WD |
860 | |
861 | argc--; | |
862 | argv++; | |
ea882baf WD |
863 | |
864 | if (sep) { /* export as text file */ | |
be11235a | 865 | len = hexport_r(&env_htab, sep, 0, &addr, size, argc, argv); |
ea882baf | 866 | if (len < 0) { |
d09b1787 | 867 | error("Cannot export environment: errno = %d\n", errno); |
ea882baf WD |
868 | return 1; |
869 | } | |
8c3aff52 | 870 | sprintf(buf, "%zX", (size_t)len); |
ea882baf WD |
871 | setenv("filesize", buf); |
872 | ||
873 | return 0; | |
874 | } | |
875 | ||
876 | envp = (env_t *)addr; | |
877 | ||
878 | if (chk) /* export as checksum protected block */ | |
879 | res = (char *)envp->data; | |
880 | else /* export as raw binary data */ | |
881 | res = addr; | |
882 | ||
be11235a | 883 | len = hexport_r(&env_htab, '\0', 0, &res, ENV_SIZE, argc, argv); |
ea882baf | 884 | if (len < 0) { |
d09b1787 | 885 | error("Cannot export environment: errno = %d\n", errno); |
ea882baf WD |
886 | return 1; |
887 | } | |
888 | ||
889 | if (chk) { | |
d09b1787 | 890 | envp->crc = crc32(0, envp->data, ENV_SIZE); |
ea882baf WD |
891 | #ifdef CONFIG_ENV_ADDR_REDUND |
892 | envp->flags = ACTIVE_FLAG; | |
893 | #endif | |
894 | } | |
41ef372c | 895 | setenv_hex("filesize", len + offsetof(env_t, data)); |
ea882baf WD |
896 | |
897 | return 0; | |
898 | ||
899 | sep_err: | |
d09b1787 | 900 | printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd); |
ea882baf WD |
901 | return 1; |
902 | } | |
0c79cda0 | 903 | #endif |
ea882baf | 904 | |
0c79cda0 | 905 | #ifdef CONFIG_CMD_IMPORTENV |
ea882baf WD |
906 | /* |
907 | * env import [-d] [-t | -b | -c] addr [size] | |
908 | * -d: delete existing environment before importing; | |
909 | * otherwise overwrite / append to existion definitions | |
910 | * -t: assume text format; either "size" must be given or the | |
911 | * text data must be '\0' terminated | |
912 | * -b: assume binary format ('\0' separated, "\0\0" terminated) | |
913 | * -c: assume checksum protected environment format | |
914 | * addr: memory address to read from | |
915 | * size: length of input data; if missing, proper '\0' | |
916 | * termination is mandatory | |
917 | */ | |
d09b1787 IG |
918 | static int do_env_import(cmd_tbl_t *cmdtp, int flag, |
919 | int argc, char * const argv[]) | |
ea882baf WD |
920 | { |
921 | char *cmd, *addr; | |
922 | char sep = '\n'; | |
923 | int chk = 0; | |
924 | int fmt = 0; | |
925 | int del = 0; | |
926 | size_t size; | |
927 | ||
928 | cmd = *argv; | |
929 | ||
930 | while (--argc > 0 && **++argv == '-') { | |
931 | char *arg = *argv; | |
932 | while (*++arg) { | |
933 | switch (*arg) { | |
934 | case 'b': /* raw binary format */ | |
935 | if (fmt++) | |
936 | goto sep_err; | |
937 | sep = '\0'; | |
938 | break; | |
939 | case 'c': /* external checksum format */ | |
940 | if (fmt++) | |
941 | goto sep_err; | |
942 | sep = '\0'; | |
943 | chk = 1; | |
944 | break; | |
945 | case 't': /* text format */ | |
946 | if (fmt++) | |
947 | goto sep_err; | |
948 | sep = '\n'; | |
949 | break; | |
950 | case 'd': | |
951 | del = 1; | |
952 | break; | |
953 | default: | |
4c12eeb8 | 954 | return CMD_RET_USAGE; |
ea882baf WD |
955 | } |
956 | } | |
957 | } | |
958 | ||
f3c615b8 | 959 | if (argc < 1) |
4c12eeb8 | 960 | return CMD_RET_USAGE; |
ea882baf WD |
961 | |
962 | if (!fmt) | |
963 | printf("## Warning: defaulting to text format\n"); | |
964 | ||
965 | addr = (char *)simple_strtoul(argv[0], NULL, 16); | |
966 | ||
967 | if (argc == 2) { | |
968 | size = simple_strtoul(argv[1], NULL, 16); | |
969 | } else { | |
970 | char *s = addr; | |
971 | ||
972 | size = 0; | |
973 | ||
974 | while (size < MAX_ENV_SIZE) { | |
975 | if ((*s == sep) && (*(s+1) == '\0')) | |
976 | break; | |
977 | ++s; | |
978 | ++size; | |
979 | } | |
980 | if (size == MAX_ENV_SIZE) { | |
981 | printf("## Warning: Input data exceeds %d bytes" | |
982 | " - truncated\n", MAX_ENV_SIZE); | |
983 | } | |
d3f80c77 | 984 | size += 2; |
79afc88d | 985 | printf("## Info: input data size = %zu = 0x%zX\n", size, size); |
ea882baf WD |
986 | } |
987 | ||
988 | if (chk) { | |
989 | uint32_t crc; | |
990 | env_t *ep = (env_t *)addr; | |
991 | ||
992 | size -= offsetof(env_t, data); | |
993 | memcpy(&crc, &ep->crc, sizeof(crc)); | |
994 | ||
995 | if (crc32(0, ep->data, size) != crc) { | |
996 | puts("## Error: bad CRC, import failed\n"); | |
997 | return 1; | |
998 | } | |
999 | addr = (char *)ep->data; | |
1000 | } | |
1001 | ||
348b1f1c | 1002 | if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR, |
c4e0057f | 1003 | 0, NULL) == 0) { |
ea882baf WD |
1004 | error("Environment import failed: errno = %d\n", errno); |
1005 | return 1; | |
1006 | } | |
1007 | gd->flags |= GD_FLG_ENV_READY; | |
1008 | ||
1009 | return 0; | |
1010 | ||
1011 | sep_err: | |
1012 | printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", | |
1013 | cmd); | |
1014 | return 1; | |
1015 | } | |
0c79cda0 | 1016 | #endif |
ea882baf | 1017 | |
ea882baf WD |
1018 | /* |
1019 | * New command line interface: "env" command with subcommands | |
1020 | */ | |
1021 | static cmd_tbl_t cmd_env_sub[] = { | |
1022 | #if defined(CONFIG_CMD_ASKENV) | |
1023 | U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""), | |
1024 | #endif | |
1025 | U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""), | |
9d8d661d | 1026 | U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""), |
ea882baf WD |
1027 | #if defined(CONFIG_CMD_EDITENV) |
1028 | U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""), | |
1029 | #endif | |
5e2b3e0c JH |
1030 | #if defined(CONFIG_CMD_ENV_CALLBACK) |
1031 | U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""), | |
1032 | #endif | |
fffad71b JH |
1033 | #if defined(CONFIG_CMD_ENV_FLAGS) |
1034 | U_BOOT_CMD_MKENT(flags, 1, 0, do_env_flags, "", ""), | |
1035 | #endif | |
0c79cda0 | 1036 | #if defined(CONFIG_CMD_EXPORTENV) |
ea882baf | 1037 | U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""), |
0c79cda0 | 1038 | #endif |
a000b795 KP |
1039 | #if defined(CONFIG_CMD_GREPENV) |
1040 | U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""), | |
1041 | #endif | |
0c79cda0 | 1042 | #if defined(CONFIG_CMD_IMPORTENV) |
ea882baf | 1043 | U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""), |
0c79cda0 | 1044 | #endif |
ea882baf WD |
1045 | U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""), |
1046 | #if defined(CONFIG_CMD_RUN) | |
1047 | U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""), | |
1048 | #endif | |
1049 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) | |
1050 | U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""), | |
1051 | #endif | |
1052 | U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""), | |
1053 | }; | |
1054 | ||
2e5167cc | 1055 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) |
60f7da1f HS |
1056 | void env_reloc(void) |
1057 | { | |
1058 | fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); | |
1059 | } | |
1060 | #endif | |
1061 | ||
f3c615b8 | 1062 | static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
ea882baf WD |
1063 | { |
1064 | cmd_tbl_t *cp; | |
1065 | ||
5904da02 | 1066 | if (argc < 2) |
4c12eeb8 | 1067 | return CMD_RET_USAGE; |
5904da02 | 1068 | |
ea882baf WD |
1069 | /* drop initial "env" arg */ |
1070 | argc--; | |
1071 | argv++; | |
1072 | ||
1073 | cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); | |
1074 | ||
1075 | if (cp) | |
1076 | return cp->cmd(cmdtp, flag, argc, argv); | |
1077 | ||
4c12eeb8 | 1078 | return CMD_RET_USAGE; |
ea882baf WD |
1079 | } |
1080 | ||
088f1b19 KP |
1081 | #ifdef CONFIG_SYS_LONGHELP |
1082 | static char env_help_text[] = | |
ea882baf WD |
1083 | #if defined(CONFIG_CMD_ASKENV) |
1084 | "ask name [message] [size] - ask for environment variable\nenv " | |
5e2b3e0c JH |
1085 | #endif |
1086 | #if defined(CONFIG_CMD_ENV_CALLBACK) | |
1087 | "callbacks - print callbacks and their associated variables\nenv " | |
ea882baf | 1088 | #endif |
b64b7c3d GF |
1089 | "default [-f] -a - [forcibly] reset default environment\n" |
1090 | "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n" | |
9d8d661d | 1091 | "env delete [-f] var [...] - [forcibly] delete variable(s)\n" |
ea882baf WD |
1092 | #if defined(CONFIG_CMD_EDITENV) |
1093 | "env edit name - edit environment variable\n" | |
1094 | #endif | |
4796bc4b | 1095 | #if defined(CONFIG_CMD_EXPORTENV) |
37f2fe74 | 1096 | "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n" |
4796bc4b | 1097 | #endif |
fffad71b JH |
1098 | #if defined(CONFIG_CMD_ENV_FLAGS) |
1099 | "env flags - print variables that have non-default flags\n" | |
1100 | #endif | |
a000b795 KP |
1101 | #if defined(CONFIG_CMD_GREPENV) |
1102 | "env grep string [...] - search environment\n" | |
1103 | #endif | |
4796bc4b | 1104 | #if defined(CONFIG_CMD_IMPORTENV) |
a000b795 | 1105 | "env import [-d] [-t | -b | -c] addr [size] - import environment\n" |
4796bc4b | 1106 | #endif |
be11235a | 1107 | "env print [-a | name ...] - print environment\n" |
ea882baf WD |
1108 | #if defined(CONFIG_CMD_RUN) |
1109 | "env run var [...] - run commands in an environment variable\n" | |
1110 | #endif | |
d798a9b5 | 1111 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
ea882baf | 1112 | "env save - save environment\n" |
d798a9b5 | 1113 | #endif |
088f1b19 KP |
1114 | "env set [-f] name [arg ...]\n"; |
1115 | #endif | |
1116 | ||
1117 | U_BOOT_CMD( | |
1118 | env, CONFIG_SYS_MAXARGS, 1, do_env, | |
1119 | "environment handling commands", env_help_text | |
ea882baf WD |
1120 | ); |
1121 | ||
1122 | /* | |
1123 | * Old command line interface, kept for compatibility | |
1124 | */ | |
8bde7f77 | 1125 | |
246c6922 | 1126 | #if defined(CONFIG_CMD_EDITENV) |
722b061b | 1127 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1128 | editenv, 2, 0, do_env_edit, |
246c6922 PT |
1129 | "edit environment variable", |
1130 | "name\n" | |
722b061b MF |
1131 | " - edit environment variable 'name'", |
1132 | var_complete | |
246c6922 PT |
1133 | ); |
1134 | #endif | |
1135 | ||
722b061b | 1136 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1137 | printenv, CONFIG_SYS_MAXARGS, 1, do_env_print, |
2fb2604d | 1138 | "print environment variables", |
be11235a | 1139 | "[-a]\n - print [all] values of all environment variables\n" |
8bde7f77 | 1140 | "printenv name ...\n" |
722b061b MF |
1141 | " - print value of environment variable 'name'", |
1142 | var_complete | |
8bde7f77 WD |
1143 | ); |
1144 | ||
a000b795 KP |
1145 | #ifdef CONFIG_CMD_GREPENV |
1146 | U_BOOT_CMD_COMPLETE( | |
1147 | grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep, | |
1148 | "search environment variables", | |
1149 | "string ...\n" | |
1150 | " - list environment name=value pairs matching 'string'", | |
1151 | var_complete | |
1152 | ); | |
1153 | #endif | |
1154 | ||
722b061b | 1155 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1156 | setenv, CONFIG_SYS_MAXARGS, 0, do_env_set, |
2fb2604d | 1157 | "set environment variables", |
24ab5a19 JH |
1158 | "[-f] name value ...\n" |
1159 | " - [forcibly] set environment variable 'name' to 'value ...'\n" | |
1160 | "setenv [-f] name\n" | |
1161 | " - [forcibly] delete environment variable 'name'", | |
722b061b | 1162 | var_complete |
8bde7f77 WD |
1163 | ); |
1164 | ||
c76fe474 | 1165 | #if defined(CONFIG_CMD_ASKENV) |
8bde7f77 | 1166 | |
0d498393 | 1167 | U_BOOT_CMD( |
ea882baf | 1168 | askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask, |
2fb2604d | 1169 | "get environment variables from stdin", |
8bde7f77 WD |
1170 | "name [message] [size]\n" |
1171 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
1172 | "askenv name\n" | |
1173 | " - get environment variable 'name' from stdin\n" | |
1174 | "askenv name size\n" | |
1175 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
1176 | "askenv name [message] size\n" | |
1177 | " - display 'message' string and get environment variable 'name'" | |
a89c33db | 1178 | "from stdin (max 'size' chars)" |
8bde7f77 | 1179 | ); |
90253178 | 1180 | #endif |
8bde7f77 | 1181 | |
c76fe474 | 1182 | #if defined(CONFIG_CMD_RUN) |
722b061b | 1183 | U_BOOT_CMD_COMPLETE( |
6d0f6bcf | 1184 | run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d | 1185 | "run commands in an environment variable", |
8bde7f77 | 1186 | "var [...]\n" |
722b061b MF |
1187 | " - run the commands in the environment variable(s) 'var'", |
1188 | var_complete | |
8bde7f77 | 1189 | ); |
90253178 | 1190 | #endif |
7ac2fe2d | 1191 | #endif /* CONFIG_SPL_BUILD */ |