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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> |
281e00a3 | 50 | #include <serial.h> |
a68d3ed0 WD |
51 | #include <linux/stddef.h> |
52 | #include <asm/byteorder.h> | |
c76fe474 | 53 | #if defined(CONFIG_CMD_NET) |
a68d3ed0 WD |
54 | #include <net.h> |
55 | #endif | |
56 | ||
d87080b7 WD |
57 | DECLARE_GLOBAL_DATA_PTR; |
58 | ||
f3c615b8 ML |
59 | #if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ |
60 | !defined(CONFIG_ENV_IS_IN_FLASH) && \ | |
61 | !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ | |
f3c615b8 | 62 | !defined(CONFIG_ENV_IS_IN_MMC) && \ |
57210c7c | 63 | !defined(CONFIG_ENV_IS_IN_FAT) && \ |
f3c615b8 ML |
64 | !defined(CONFIG_ENV_IS_IN_NAND) && \ |
65 | !defined(CONFIG_ENV_IS_IN_NVRAM) && \ | |
66 | !defined(CONFIG_ENV_IS_IN_ONENAND) && \ | |
67 | !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ | |
0a85a9e7 | 68 | !defined(CONFIG_ENV_IS_IN_REMOTE) && \ |
f3c615b8 | 69 | !defined(CONFIG_ENV_IS_NOWHERE) |
75eb82ec | 70 | # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ |
b37d41aa | 71 | SPI_FLASH|NVRAM|MMC|FAT|REMOTE} or CONFIG_ENV_IS_NOWHERE |
a68d3ed0 WD |
72 | #endif |
73 | ||
74 | #define XMK_STR(x) #x | |
75 | #define MK_STR(x) XMK_STR(x) | |
76 | ||
ea882baf WD |
77 | /* |
78 | * Maximum expected input data size for import command | |
79 | */ | |
80 | #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */ | |
a68d3ed0 | 81 | |
558605cf | 82 | ulong load_addr = CONFIG_SYS_LOAD_ADDR; /* Default Load Address */ |
1aec244a SG |
83 | ulong save_addr; /* Default Save Address */ |
84 | ulong save_size; /* Default Save Size (in bytes) */ | |
558605cf | 85 | |
a68d3ed0 WD |
86 | /* |
87 | * Table with supported baudrates (defined in config_xyz.h) | |
88 | */ | |
6d0f6bcf | 89 | static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE; |
a68d3ed0 WD |
90 | #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0])) |
91 | ||
da95427c | 92 | /* |
ea882baf | 93 | * This variable is incremented on each do_env_set(), so it can |
da95427c HS |
94 | * be used via get_env_id() as an indication, if the environment |
95 | * has changed or not. So it is possible to reread an environment | |
96 | * variable only if the environment was changed ... done so for | |
97 | * example in NetInitLoop() | |
98 | */ | |
2f70c49e | 99 | static int env_id = 1; |
a68d3ed0 | 100 | |
f3c615b8 | 101 | int get_env_id(void) |
2f70c49e HS |
102 | { |
103 | return env_id; | |
104 | } | |
a68d3ed0 | 105 | |
4c94f6c5 | 106 | /* |
ea882baf WD |
107 | * Command interface: print one or all environment variables |
108 | * | |
109 | * Returns 0 in case of error, or length of printed string | |
4c94f6c5 | 110 | */ |
ea882baf | 111 | static int env_print(char *name) |
a68d3ed0 | 112 | { |
ea882baf WD |
113 | char *res = NULL; |
114 | size_t len; | |
115 | ||
116 | if (name) { /* print a single name */ | |
117 | ENTRY e, *ep; | |
118 | ||
119 | e.key = name; | |
120 | e.data = NULL; | |
2eb1573f | 121 | hsearch_r(e, FIND, &ep, &env_htab); |
ea882baf WD |
122 | if (ep == NULL) |
123 | return 0; | |
f3c615b8 | 124 | len = printf("%s=%s\n", ep->key, ep->data); |
ea882baf WD |
125 | return len; |
126 | } | |
a68d3ed0 | 127 | |
ea882baf | 128 | /* print whole list */ |
37f2fe74 | 129 | len = hexport_r(&env_htab, '\n', &res, 0, 0, NULL); |
a68d3ed0 | 130 | |
ea882baf WD |
131 | if (len > 0) { |
132 | puts(res); | |
133 | free(res); | |
134 | return len; | |
a68d3ed0 WD |
135 | } |
136 | ||
ea882baf WD |
137 | /* should never happen */ |
138 | return 0; | |
4c94f6c5 | 139 | } |
a68d3ed0 | 140 | |
ea882baf | 141 | int do_env_print (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
4c94f6c5 MF |
142 | { |
143 | int i; | |
144 | int rcode = 0; | |
a68d3ed0 | 145 | |
4c94f6c5 MF |
146 | if (argc == 1) { |
147 | /* print all env vars */ | |
ea882baf WD |
148 | rcode = env_print(NULL); |
149 | if (!rcode) | |
4c94f6c5 MF |
150 | return 1; |
151 | printf("\nEnvironment size: %d/%ld bytes\n", | |
152 | rcode, (ulong)ENV_SIZE); | |
153 | return 0; | |
154 | } | |
a68d3ed0 | 155 | |
4c94f6c5 MF |
156 | /* print selected env vars */ |
157 | for (i = 1; i < argc; ++i) { | |
ea882baf WD |
158 | int rc = env_print(argv[i]); |
159 | if (!rc) { | |
160 | printf("## Error: \"%s\" not defined\n", argv[i]); | |
4c94f6c5 | 161 | ++rcode; |
a68d3ed0 WD |
162 | } |
163 | } | |
4c94f6c5 | 164 | |
a68d3ed0 WD |
165 | return rcode; |
166 | } | |
167 | ||
a000b795 | 168 | #ifdef CONFIG_CMD_GREPENV |
d09b1787 IG |
169 | static int do_env_grep(cmd_tbl_t *cmdtp, int flag, |
170 | int argc, char * const argv[]) | |
a000b795 KP |
171 | { |
172 | ENTRY *match; | |
173 | unsigned char matched[env_htab.size / 8]; | |
174 | int rcode = 1, arg = 1, idx; | |
175 | ||
176 | if (argc < 2) | |
4c12eeb8 | 177 | return CMD_RET_USAGE; |
a000b795 KP |
178 | |
179 | memset(matched, 0, env_htab.size / 8); | |
180 | ||
181 | while (arg <= argc) { | |
182 | idx = 0; | |
068f158f | 183 | while ((idx = hstrstr_r(argv[arg], idx, &match, &env_htab))) { |
a000b795 KP |
184 | if (!(matched[idx / 8] & (1 << (idx & 7)))) { |
185 | puts(match->key); | |
186 | puts("="); | |
187 | puts(match->data); | |
188 | puts("\n"); | |
189 | } | |
190 | matched[idx / 8] |= 1 << (idx & 7); | |
191 | rcode = 0; | |
192 | } | |
193 | arg++; | |
194 | } | |
195 | ||
196 | return rcode; | |
197 | } | |
198 | #endif | |
199 | ||
ea882baf | 200 | /* |
a68d3ed0 WD |
201 | * Set a new environment variable, |
202 | * or replace or delete an existing one. | |
a68d3ed0 | 203 | */ |
d09b1787 | 204 | int _do_env_set(int flag, int argc, char * const argv[]) |
a68d3ed0 | 205 | { |
ea882baf | 206 | int i, len; |
a68d3ed0 | 207 | int console = -1; |
ea882baf WD |
208 | char *name, *value, *s; |
209 | ENTRY e, *ep; | |
a68d3ed0 WD |
210 | |
211 | name = argv[1]; | |
212 | ||
471a7be7 | 213 | if (strchr(name, '=')) { |
d09b1787 IG |
214 | printf("## Error: illegal character '=' in variable name" |
215 | "\"%s\"\n", name); | |
471a7be7 WD |
216 | return 1; |
217 | } | |
218 | ||
2f70c49e | 219 | env_id++; |
a68d3ed0 WD |
220 | /* |
221 | * search if variable with this name already exists | |
222 | */ | |
ea882baf WD |
223 | e.key = name; |
224 | e.data = NULL; | |
2eb1573f | 225 | hsearch_r(e, FIND, &ep, &env_htab); |
a68d3ed0 | 226 | |
9c5586aa | 227 | /* Check for console redirection */ |
f3c615b8 | 228 | if (strcmp(name, "stdin") == 0) |
9c5586aa | 229 | console = stdin; |
f3c615b8 | 230 | else if (strcmp(name, "stdout") == 0) |
9c5586aa | 231 | console = stdout; |
f3c615b8 | 232 | else if (strcmp(name, "stderr") == 0) |
9c5586aa | 233 | console = stderr; |
9c5586aa AR |
234 | |
235 | if (console != -1) { | |
236 | if (argc < 3) { /* Cannot delete it! */ | |
237 | printf("Can't delete \"%s\"\n", name); | |
238 | return 1; | |
239 | } | |
240 | ||
241 | #ifdef CONFIG_CONSOLE_MUX | |
c2ba2ff5 GF |
242 | if (iomux_doenv(console, argv[2])) |
243 | return 1; | |
9c5586aa AR |
244 | #else |
245 | /* Try assigning specified device */ | |
f3c615b8 | 246 | if (console_assign(console, argv[2]) < 0) |
9c5586aa AR |
247 | return 1; |
248 | ||
249 | #ifdef CONFIG_SERIAL_MULTI | |
f3c615b8 | 250 | if (serial_assign(argv[2]) < 0) |
9c5586aa AR |
251 | return 1; |
252 | #endif | |
253 | #endif /* CONFIG_CONSOLE_MUX */ | |
254 | } | |
255 | ||
a68d3ed0 | 256 | /* |
ea882baf WD |
257 | * Some variables like "ethaddr" and "serial#" can be set only |
258 | * once and cannot be deleted; also, "ver" is readonly. | |
a68d3ed0 | 259 | */ |
ea882baf | 260 | if (ep) { /* variable exists */ |
a68d3ed0 | 261 | #ifndef CONFIG_ENV_OVERWRITE |
d09b1787 IG |
262 | if (strcmp(name, "serial#") == 0 || |
263 | (strcmp(name, "ethaddr") == 0 | |
a68d3ed0 | 264 | #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) |
d09b1787 | 265 | && strcmp(ep->data, MK_STR(CONFIG_ETHADDR)) != 0 |
a68d3ed0 | 266 | #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */ |
d09b1787 | 267 | )) { |
f3c615b8 | 268 | printf("Can't overwrite \"%s\"\n", name); |
a68d3ed0 WD |
269 | return 1; |
270 | } | |
271 | #endif | |
a68d3ed0 WD |
272 | /* |
273 | * Switch to new baudrate if new baudrate is supported | |
274 | */ | |
f3c615b8 | 275 | if (strcmp(name, "baudrate") == 0) { |
a68d3ed0 WD |
276 | int baudrate = simple_strtoul(argv[2], NULL, 10); |
277 | int i; | |
f3c615b8 | 278 | for (i = 0; i < N_BAUDRATES; ++i) { |
a68d3ed0 WD |
279 | if (baudrate == baudrate_table[i]) |
280 | break; | |
281 | } | |
282 | if (i == N_BAUDRATES) { | |
f3c615b8 | 283 | printf("## Baudrate %d bps not supported\n", |
a68d3ed0 WD |
284 | baudrate); |
285 | return 1; | |
286 | } | |
d09b1787 IG |
287 | printf("## Switch baudrate to %d bps and" |
288 | "press ENTER ...\n", baudrate); | |
a68d3ed0 WD |
289 | udelay(50000); |
290 | gd->baudrate = baudrate; | |
c84bad0e | 291 | #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2) |
d0fb80c3 WD |
292 | gd->bd->bi_baudrate = baudrate; |
293 | #endif | |
294 | ||
f3c615b8 | 295 | serial_setbrg(); |
a68d3ed0 | 296 | udelay(50000); |
d09b1787 IG |
297 | while (getc() != '\r') |
298 | ; | |
a68d3ed0 | 299 | } |
a68d3ed0 WD |
300 | } |
301 | ||
a68d3ed0 | 302 | /* Delete only ? */ |
d09b1787 | 303 | if (argc < 3 || argv[2] == NULL) { |
2eb1573f | 304 | int rc = hdelete_r(name, &env_htab); |
ea882baf | 305 | return !rc; |
a68d3ed0 WD |
306 | } |
307 | ||
308 | /* | |
ea882baf | 309 | * Insert / replace new value |
a68d3ed0 | 310 | */ |
f3c615b8 | 311 | for (i = 2, len = 0; i < argc; ++i) |
a68d3ed0 | 312 | len += strlen(argv[i]) + 1; |
f3c615b8 ML |
313 | |
314 | value = malloc(len); | |
315 | if (value == NULL) { | |
ea882baf | 316 | printf("## Can't malloc %d bytes\n", len); |
a68d3ed0 WD |
317 | return 1; |
318 | } | |
f3c615b8 | 319 | for (i = 2, s = value; i < argc; ++i) { |
ea882baf | 320 | char *v = argv[i]; |
a68d3ed0 | 321 | |
ea882baf | 322 | while ((*s++ = *v++) != '\0') |
a68d3ed0 | 323 | ; |
d09b1787 | 324 | *(s - 1) = ' '; |
ea882baf WD |
325 | } |
326 | if (s != value) | |
327 | *--s = '\0'; | |
328 | ||
d09b1787 IG |
329 | e.key = name; |
330 | e.data = value; | |
2eb1573f | 331 | hsearch_r(e, ENTER, &ep, &env_htab); |
ea882baf WD |
332 | free(value); |
333 | if (!ep) { | |
334 | printf("## Error inserting \"%s\" variable, errno=%d\n", | |
335 | name, errno); | |
336 | return 1; | |
a68d3ed0 | 337 | } |
a68d3ed0 WD |
338 | |
339 | /* | |
340 | * Some variables should be updated when the corresponding | |
ea882baf | 341 | * entry in the environment is changed |
a68d3ed0 | 342 | */ |
50a47d05 | 343 | if (strcmp(argv[1], "loadaddr") == 0) { |
a68d3ed0 WD |
344 | load_addr = simple_strtoul(argv[2], NULL, 16); |
345 | return 0; | |
346 | } | |
c76fe474 | 347 | #if defined(CONFIG_CMD_NET) |
f3c615b8 ML |
348 | else if (strcmp(argv[1], "bootfile") == 0) { |
349 | copy_filename(BootFile, argv[2], sizeof(BootFile)); | |
a68d3ed0 WD |
350 | return 0; |
351 | } | |
90253178 | 352 | #endif |
a68d3ed0 WD |
353 | return 0; |
354 | } | |
355 | ||
84b5e802 | 356 | int setenv(const char *varname, const char *varvalue) |
a68d3ed0 | 357 | { |
84b5e802 WD |
358 | const char * const argv[4] = { "setenv", varname, varvalue, NULL }; |
359 | ||
d09b1787 | 360 | if (varvalue == NULL || varvalue[0] == '\0') |
84b5e802 | 361 | return _do_env_set(0, 2, (char * const *)argv); |
9ffd451a | 362 | else |
84b5e802 | 363 | return _do_env_set(0, 3, (char * const *)argv); |
a68d3ed0 WD |
364 | } |
365 | ||
d67f10ce SG |
366 | /** |
367 | * Set an environment variable to an integer value | |
368 | * | |
369 | * @param varname Environmet variable to set | |
370 | * @param value Value to set it to | |
371 | * @return 0 if ok, 1 on error | |
372 | */ | |
373 | int setenv_ulong(const char *varname, ulong value) | |
374 | { | |
375 | /* TODO: this should be unsigned */ | |
376 | char *str = simple_itoa(value); | |
377 | ||
378 | return setenv(varname, str); | |
379 | } | |
380 | ||
381 | /** | |
382 | * Set an environment variable to an address in hex | |
383 | * | |
384 | * @param varname Environmet variable to set | |
385 | * @param addr Value to set it to | |
386 | * @return 0 if ok, 1 on error | |
387 | */ | |
388 | int setenv_addr(const char *varname, const void *addr) | |
389 | { | |
390 | char str[17]; | |
391 | ||
79afc88d | 392 | sprintf(str, "%lx", (uintptr_t)addr); |
d67f10ce SG |
393 | return setenv(varname, str); |
394 | } | |
395 | ||
f3c615b8 | 396 | int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 397 | { |
47e26b1b | 398 | if (argc < 2) |
4c12eeb8 | 399 | return CMD_RET_USAGE; |
a68d3ed0 | 400 | |
ea882baf | 401 | return _do_env_set(flag, argc, argv); |
a68d3ed0 WD |
402 | } |
403 | ||
ea882baf | 404 | /* |
a68d3ed0 WD |
405 | * Prompt for environment variable |
406 | */ | |
c76fe474 | 407 | #if defined(CONFIG_CMD_ASKENV) |
f3c615b8 | 408 | int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 409 | { |
6d0f6bcf JCPV |
410 | char message[CONFIG_SYS_CBSIZE]; |
411 | int size = CONFIG_SYS_CBSIZE - 1; | |
ea882baf | 412 | int i, len, pos; |
a68d3ed0 WD |
413 | char *local_args[4]; |
414 | ||
415 | local_args[0] = argv[0]; | |
416 | local_args[1] = argv[1]; | |
417 | local_args[2] = NULL; | |
418 | local_args[3] = NULL; | |
419 | ||
a68d3ed0 WD |
420 | /* Check the syntax */ |
421 | switch (argc) { | |
422 | case 1: | |
4c12eeb8 | 423 | return CMD_RET_USAGE; |
a68d3ed0 | 424 | |
ea882baf WD |
425 | case 2: /* env_ask envname */ |
426 | sprintf(message, "Please enter '%s':", argv[1]); | |
a68d3ed0 WD |
427 | break; |
428 | ||
ea882baf WD |
429 | case 3: /* env_ask envname size */ |
430 | sprintf(message, "Please enter '%s':", argv[1]); | |
431 | size = simple_strtoul(argv[2], NULL, 10); | |
a68d3ed0 WD |
432 | break; |
433 | ||
ea882baf | 434 | default: /* env_ask envname message1 ... messagen size */ |
f3c615b8 ML |
435 | for (i = 2, pos = 0; i < argc - 1; i++) { |
436 | if (pos) | |
a68d3ed0 | 437 | message[pos++] = ' '; |
f3c615b8 | 438 | |
d09b1787 | 439 | strcpy(message + pos, argv[i]); |
a68d3ed0 WD |
440 | pos += strlen(argv[i]); |
441 | } | |
d09b1787 | 442 | |
a68d3ed0 | 443 | message[pos] = '\0'; |
ea882baf | 444 | size = simple_strtoul(argv[argc - 1], NULL, 10); |
a68d3ed0 WD |
445 | break; |
446 | } | |
447 | ||
6d0f6bcf JCPV |
448 | if (size >= CONFIG_SYS_CBSIZE) |
449 | size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
450 | |
451 | if (size <= 0) | |
452 | return 1; | |
453 | ||
454 | /* prompt for input */ | |
ea882baf | 455 | len = readline(message); |
a68d3ed0 WD |
456 | |
457 | if (size < len) | |
458 | console_buffer[size] = '\0'; | |
459 | ||
460 | len = 2; | |
461 | if (console_buffer[0] != '\0') { | |
462 | local_args[2] = console_buffer; | |
463 | len = 3; | |
464 | } | |
465 | ||
466 | /* Continue calling setenv code */ | |
ea882baf | 467 | return _do_env_set(flag, len, local_args); |
a68d3ed0 | 468 | } |
90253178 | 469 | #endif |
a68d3ed0 | 470 | |
ea882baf | 471 | /* |
246c6922 PT |
472 | * Interactively edit an environment variable |
473 | */ | |
474 | #if defined(CONFIG_CMD_EDITENV) | |
ea882baf | 475 | int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
246c6922 PT |
476 | { |
477 | char buffer[CONFIG_SYS_CBSIZE]; | |
478 | char *init_val; | |
246c6922 | 479 | |
47e26b1b | 480 | if (argc < 2) |
4c12eeb8 | 481 | return CMD_RET_USAGE; |
246c6922 PT |
482 | |
483 | /* Set read buffer to initial value or empty sting */ | |
484 | init_val = getenv(argv[1]); | |
485 | if (init_val) | |
7fcd9bbd | 486 | sprintf(buffer, "%s", init_val); |
246c6922 PT |
487 | else |
488 | buffer[0] = '\0'; | |
489 | ||
9c348311 | 490 | readline_into_buffer("edit: ", buffer, 0); |
246c6922 PT |
491 | |
492 | return setenv(argv[1], buffer); | |
493 | } | |
494 | #endif /* CONFIG_CMD_EDITENV */ | |
495 | ||
ea882baf | 496 | /* |
a68d3ed0 WD |
497 | * Look up variable from environment, |
498 | * return address of storage for that variable, | |
499 | * or NULL if not found | |
500 | */ | |
84b5e802 | 501 | char *getenv(const char *name) |
a68d3ed0 | 502 | { |
d09b1787 | 503 | if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */ |
ea882baf | 504 | ENTRY e, *ep; |
a68d3ed0 | 505 | |
91a76751 | 506 | WATCHDOG_RESET(); |
2a3cb020 | 507 | |
d09b1787 IG |
508 | e.key = name; |
509 | e.data = NULL; | |
2eb1573f | 510 | hsearch_r(e, FIND, &ep, &env_htab); |
91a76751 | 511 | |
f3c615b8 | 512 | return ep ? ep->data : NULL; |
a68d3ed0 WD |
513 | } |
514 | ||
ea882baf | 515 | /* restricted capabilities before import */ |
ea882baf WD |
516 | if (getenv_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0) |
517 | return (char *)(gd->env_buf); | |
91a76751 | 518 | |
ea882baf | 519 | return NULL; |
a68d3ed0 WD |
520 | } |
521 | ||
ea882baf WD |
522 | /* |
523 | * Look up variable from environment for restricted C runtime env. | |
524 | */ | |
84b5e802 | 525 | int getenv_f(const char *name, char *buf, unsigned len) |
a68d3ed0 WD |
526 | { |
527 | int i, nxt; | |
528 | ||
d09b1787 | 529 | for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) { |
a68d3ed0 WD |
530 | int val, n; |
531 | ||
f3c615b8 ML |
532 | for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) { |
533 | if (nxt >= CONFIG_ENV_SIZE) | |
534 | return -1; | |
a68d3ed0 | 535 | } |
f3c615b8 ML |
536 | |
537 | val = envmatch((uchar *)name, i); | |
538 | if (val < 0) | |
a68d3ed0 | 539 | continue; |
9ed4a958 | 540 | |
a68d3ed0 | 541 | /* found; copy out */ |
f3c615b8 | 542 | for (n = 0; n < len; ++n, ++buf) { |
d09b1787 IG |
543 | *buf = env_get_char(val++); |
544 | if (*buf == '\0') | |
9ed4a958 WD |
545 | return n; |
546 | } | |
547 | ||
548 | if (n) | |
549 | *--buf = '\0'; | |
550 | ||
a02a884b WD |
551 | printf("env_buf [%d bytes] too small for value of \"%s\"\n", |
552 | len, name); | |
9ed4a958 WD |
553 | |
554 | return n; | |
a68d3ed0 | 555 | } |
d09b1787 | 556 | |
f3c615b8 | 557 | return -1; |
a68d3ed0 WD |
558 | } |
559 | ||
4a9b4131 SG |
560 | /** |
561 | * Decode the integer value of an environment variable and return it. | |
562 | * | |
563 | * @param name Name of environemnt variable | |
564 | * @param base Number base to use (normally 10, or 16 for hex) | |
565 | * @param default_val Default value to return if the variable is not | |
566 | * found | |
567 | * @return the decoded value, or default_val if not found | |
568 | */ | |
569 | ulong getenv_ulong(const char *name, int base, ulong default_val) | |
570 | { | |
571 | /* | |
572 | * We can use getenv() here, even before relocation, since the | |
573 | * environment variable value is an integer and thus short. | |
574 | */ | |
575 | const char *str = getenv(name); | |
576 | ||
577 | return str ? simple_strtoul(str, NULL, base) : default_val; | |
578 | } | |
579 | ||
bdab39d3 | 580 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
f3c615b8 | 581 | int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 582 | { |
f3c615b8 | 583 | printf("Saving Environment to %s...\n", env_name_spec); |
a68d3ed0 | 584 | |
f3c615b8 | 585 | return saveenv() ? 1 : 0; |
a68d3ed0 | 586 | } |
8bde7f77 | 587 | |
ba69dc26 | 588 | U_BOOT_CMD( |
ea882baf | 589 | saveenv, 1, 0, do_env_save, |
2fb2604d | 590 | "save environment variables to persistent storage", |
a89c33db | 591 | "" |
ba69dc26 | 592 | ); |
a68d3ed0 WD |
593 | #endif |
594 | ||
595 | ||
ea882baf | 596 | /* |
a68d3ed0 WD |
597 | * Match a name / name=value pair |
598 | * | |
599 | * s1 is either a simple 'name', or a 'name=value' pair. | |
600 | * i2 is the environment index for a 'name2=value2' pair. | |
d09b1787 | 601 | * If the names match, return the index for the value2, else -1. |
a68d3ed0 | 602 | */ |
f3c615b8 | 603 | int envmatch(uchar *s1, int i2) |
a68d3ed0 | 604 | { |
a68d3ed0 WD |
605 | while (*s1 == env_get_char(i2++)) |
606 | if (*s1++ == '=') | |
f3c615b8 | 607 | return i2; |
d09b1787 | 608 | |
a68d3ed0 | 609 | if (*s1 == '\0' && env_get_char(i2-1) == '=') |
f3c615b8 | 610 | return i2; |
d09b1787 | 611 | |
f3c615b8 | 612 | return -1; |
a68d3ed0 | 613 | } |
8bde7f77 | 614 | |
d09b1787 IG |
615 | static int do_env_default(cmd_tbl_t *cmdtp, int flag, |
616 | int argc, char * const argv[]) | |
ea882baf | 617 | { |
d09b1787 | 618 | if (argc != 2 || strcmp(argv[1], "-f") != 0) |
4c12eeb8 | 619 | return CMD_RET_USAGE; |
f3c615b8 | 620 | |
ea882baf WD |
621 | set_default_env("## Resetting to default environment\n"); |
622 | return 0; | |
623 | } | |
624 | ||
d09b1787 IG |
625 | static int do_env_delete(cmd_tbl_t *cmdtp, int flag, |
626 | int argc, char * const argv[]) | |
ea882baf WD |
627 | { |
628 | printf("Not implemented yet\n"); | |
629 | return 0; | |
630 | } | |
631 | ||
0c79cda0 | 632 | #ifdef CONFIG_CMD_EXPORTENV |
ea882baf | 633 | /* |
37f2fe74 | 634 | * env export [-t | -b | -c] [-s size] addr [var ...] |
ea882baf WD |
635 | * -t: export as text format; if size is given, data will be |
636 | * padded with '\0' bytes; if not, one terminating '\0' | |
637 | * will be added (which is included in the "filesize" | |
638 | * setting so you can for exmple copy this to flash and | |
639 | * keep the termination). | |
640 | * -b: export as binary format (name=value pairs separated by | |
641 | * '\0', list end marked by double "\0\0") | |
642 | * -c: export as checksum protected environment format as | |
643 | * used for example by "saveenv" command | |
37f2fe74 WD |
644 | * -s size: |
645 | * size of output buffer | |
ea882baf | 646 | * addr: memory address where environment gets stored |
37f2fe74 WD |
647 | * var... List of variable names that get included into the |
648 | * export. Without arguments, the whole environment gets | |
649 | * exported. | |
ea882baf WD |
650 | * |
651 | * With "-c" and size is NOT given, then the export command will | |
652 | * format the data as currently used for the persistent storage, | |
653 | * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and | |
654 | * prepend a valid CRC32 checksum and, in case of resundant | |
655 | * environment, a "current" redundancy flag. If size is given, this | |
656 | * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32 | |
657 | * checksum and redundancy flag will be inserted. | |
658 | * | |
659 | * With "-b" and "-t", always only the real data (including a | |
660 | * terminating '\0' byte) will be written; here the optional size | |
661 | * argument will be used to make sure not to overflow the user | |
662 | * provided buffer; the command will abort if the size is not | |
663 | * sufficient. Any remainign space will be '\0' padded. | |
664 | * | |
665 | * On successful return, the variable "filesize" will be set. | |
666 | * Note that filesize includes the trailing/terminating '\0' byte(s). | |
667 | * | |
668 | * Usage szenario: create a text snapshot/backup of the current settings: | |
669 | * | |
670 | * => env export -t 100000 | |
671 | * => era ${backup_addr} +${filesize} | |
672 | * => cp.b 100000 ${backup_addr} ${filesize} | |
673 | * | |
674 | * Re-import this snapshot, deleting all other settings: | |
675 | * | |
676 | * => env import -d -t ${backup_addr} | |
677 | */ | |
d09b1787 IG |
678 | static int do_env_export(cmd_tbl_t *cmdtp, int flag, |
679 | int argc, char * const argv[]) | |
ea882baf WD |
680 | { |
681 | char buf[32]; | |
682 | char *addr, *cmd, *res; | |
37f2fe74 | 683 | size_t size = 0; |
ea882baf WD |
684 | ssize_t len; |
685 | env_t *envp; | |
686 | char sep = '\n'; | |
687 | int chk = 0; | |
688 | int fmt = 0; | |
689 | ||
690 | cmd = *argv; | |
691 | ||
692 | while (--argc > 0 && **++argv == '-') { | |
693 | char *arg = *argv; | |
694 | while (*++arg) { | |
695 | switch (*arg) { | |
696 | case 'b': /* raw binary format */ | |
697 | if (fmt++) | |
698 | goto sep_err; | |
699 | sep = '\0'; | |
700 | break; | |
701 | case 'c': /* external checksum format */ | |
702 | if (fmt++) | |
703 | goto sep_err; | |
704 | sep = '\0'; | |
705 | chk = 1; | |
706 | break; | |
37f2fe74 WD |
707 | case 's': /* size given */ |
708 | if (--argc <= 0) | |
709 | return cmd_usage(cmdtp); | |
710 | size = simple_strtoul(*++argv, NULL, 16); | |
711 | goto NXTARG; | |
ea882baf WD |
712 | case 't': /* text format */ |
713 | if (fmt++) | |
714 | goto sep_err; | |
715 | sep = '\n'; | |
716 | break; | |
717 | default: | |
4c12eeb8 | 718 | return CMD_RET_USAGE; |
ea882baf WD |
719 | } |
720 | } | |
37f2fe74 | 721 | NXTARG: ; |
ea882baf WD |
722 | } |
723 | ||
f3c615b8 | 724 | if (argc < 1) |
4c12eeb8 | 725 | return CMD_RET_USAGE; |
8bde7f77 | 726 | |
ea882baf WD |
727 | addr = (char *)simple_strtoul(argv[0], NULL, 16); |
728 | ||
37f2fe74 | 729 | if (size) |
ea882baf | 730 | memset(addr, '\0', size); |
37f2fe74 WD |
731 | |
732 | argc--; | |
733 | argv++; | |
ea882baf WD |
734 | |
735 | if (sep) { /* export as text file */ | |
37f2fe74 | 736 | len = hexport_r(&env_htab, sep, &addr, size, argc, argv); |
ea882baf | 737 | if (len < 0) { |
d09b1787 | 738 | error("Cannot export environment: errno = %d\n", errno); |
ea882baf WD |
739 | return 1; |
740 | } | |
8c3aff52 | 741 | sprintf(buf, "%zX", (size_t)len); |
ea882baf WD |
742 | setenv("filesize", buf); |
743 | ||
744 | return 0; | |
745 | } | |
746 | ||
747 | envp = (env_t *)addr; | |
748 | ||
749 | if (chk) /* export as checksum protected block */ | |
750 | res = (char *)envp->data; | |
751 | else /* export as raw binary data */ | |
752 | res = addr; | |
753 | ||
37f2fe74 | 754 | len = hexport_r(&env_htab, '\0', &res, ENV_SIZE, argc, argv); |
ea882baf | 755 | if (len < 0) { |
d09b1787 | 756 | error("Cannot export environment: errno = %d\n", errno); |
ea882baf WD |
757 | return 1; |
758 | } | |
759 | ||
760 | if (chk) { | |
d09b1787 | 761 | envp->crc = crc32(0, envp->data, ENV_SIZE); |
ea882baf WD |
762 | #ifdef CONFIG_ENV_ADDR_REDUND |
763 | envp->flags = ACTIVE_FLAG; | |
764 | #endif | |
765 | } | |
f3c615b8 | 766 | sprintf(buf, "%zX", (size_t)(len + offsetof(env_t, data))); |
ea882baf WD |
767 | setenv("filesize", buf); |
768 | ||
769 | return 0; | |
770 | ||
771 | sep_err: | |
d09b1787 | 772 | printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd); |
ea882baf WD |
773 | return 1; |
774 | } | |
0c79cda0 | 775 | #endif |
ea882baf | 776 | |
0c79cda0 | 777 | #ifdef CONFIG_CMD_IMPORTENV |
ea882baf WD |
778 | /* |
779 | * env import [-d] [-t | -b | -c] addr [size] | |
780 | * -d: delete existing environment before importing; | |
781 | * otherwise overwrite / append to existion definitions | |
782 | * -t: assume text format; either "size" must be given or the | |
783 | * text data must be '\0' terminated | |
784 | * -b: assume binary format ('\0' separated, "\0\0" terminated) | |
785 | * -c: assume checksum protected environment format | |
786 | * addr: memory address to read from | |
787 | * size: length of input data; if missing, proper '\0' | |
788 | * termination is mandatory | |
789 | */ | |
d09b1787 IG |
790 | static int do_env_import(cmd_tbl_t *cmdtp, int flag, |
791 | int argc, char * const argv[]) | |
ea882baf WD |
792 | { |
793 | char *cmd, *addr; | |
794 | char sep = '\n'; | |
795 | int chk = 0; | |
796 | int fmt = 0; | |
797 | int del = 0; | |
798 | size_t size; | |
799 | ||
800 | cmd = *argv; | |
801 | ||
802 | while (--argc > 0 && **++argv == '-') { | |
803 | char *arg = *argv; | |
804 | while (*++arg) { | |
805 | switch (*arg) { | |
806 | case 'b': /* raw binary format */ | |
807 | if (fmt++) | |
808 | goto sep_err; | |
809 | sep = '\0'; | |
810 | break; | |
811 | case 'c': /* external checksum format */ | |
812 | if (fmt++) | |
813 | goto sep_err; | |
814 | sep = '\0'; | |
815 | chk = 1; | |
816 | break; | |
817 | case 't': /* text format */ | |
818 | if (fmt++) | |
819 | goto sep_err; | |
820 | sep = '\n'; | |
821 | break; | |
822 | case 'd': | |
823 | del = 1; | |
824 | break; | |
825 | default: | |
4c12eeb8 | 826 | return CMD_RET_USAGE; |
ea882baf WD |
827 | } |
828 | } | |
829 | } | |
830 | ||
f3c615b8 | 831 | if (argc < 1) |
4c12eeb8 | 832 | return CMD_RET_USAGE; |
ea882baf WD |
833 | |
834 | if (!fmt) | |
835 | printf("## Warning: defaulting to text format\n"); | |
836 | ||
837 | addr = (char *)simple_strtoul(argv[0], NULL, 16); | |
838 | ||
839 | if (argc == 2) { | |
840 | size = simple_strtoul(argv[1], NULL, 16); | |
841 | } else { | |
842 | char *s = addr; | |
843 | ||
844 | size = 0; | |
845 | ||
846 | while (size < MAX_ENV_SIZE) { | |
847 | if ((*s == sep) && (*(s+1) == '\0')) | |
848 | break; | |
849 | ++s; | |
850 | ++size; | |
851 | } | |
852 | if (size == MAX_ENV_SIZE) { | |
853 | printf("## Warning: Input data exceeds %d bytes" | |
854 | " - truncated\n", MAX_ENV_SIZE); | |
855 | } | |
d3f80c77 | 856 | size += 2; |
79afc88d | 857 | printf("## Info: input data size = %zu = 0x%zX\n", size, size); |
ea882baf WD |
858 | } |
859 | ||
860 | if (chk) { | |
861 | uint32_t crc; | |
862 | env_t *ep = (env_t *)addr; | |
863 | ||
864 | size -= offsetof(env_t, data); | |
865 | memcpy(&crc, &ep->crc, sizeof(crc)); | |
866 | ||
867 | if (crc32(0, ep->data, size) != crc) { | |
868 | puts("## Error: bad CRC, import failed\n"); | |
869 | return 1; | |
870 | } | |
871 | addr = (char *)ep->data; | |
872 | } | |
873 | ||
2eb1573f | 874 | if (himport_r(&env_htab, addr, size, sep, del ? 0 : H_NOCLEAR) == 0) { |
ea882baf WD |
875 | error("Environment import failed: errno = %d\n", errno); |
876 | return 1; | |
877 | } | |
878 | gd->flags |= GD_FLG_ENV_READY; | |
879 | ||
880 | return 0; | |
881 | ||
882 | sep_err: | |
883 | printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", | |
884 | cmd); | |
885 | return 1; | |
886 | } | |
0c79cda0 | 887 | #endif |
ea882baf | 888 | |
ea882baf WD |
889 | /* |
890 | * New command line interface: "env" command with subcommands | |
891 | */ | |
892 | static cmd_tbl_t cmd_env_sub[] = { | |
893 | #if defined(CONFIG_CMD_ASKENV) | |
894 | U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""), | |
895 | #endif | |
896 | U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""), | |
897 | U_BOOT_CMD_MKENT(delete, 2, 0, do_env_delete, "", ""), | |
898 | #if defined(CONFIG_CMD_EDITENV) | |
899 | U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""), | |
900 | #endif | |
0c79cda0 | 901 | #if defined(CONFIG_CMD_EXPORTENV) |
ea882baf | 902 | U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""), |
0c79cda0 | 903 | #endif |
a000b795 KP |
904 | #if defined(CONFIG_CMD_GREPENV) |
905 | U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""), | |
906 | #endif | |
0c79cda0 | 907 | #if defined(CONFIG_CMD_IMPORTENV) |
ea882baf | 908 | U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""), |
0c79cda0 | 909 | #endif |
ea882baf WD |
910 | U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""), |
911 | #if defined(CONFIG_CMD_RUN) | |
912 | U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""), | |
913 | #endif | |
914 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) | |
915 | U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""), | |
916 | #endif | |
917 | U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""), | |
918 | }; | |
919 | ||
2e5167cc | 920 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) |
60f7da1f HS |
921 | void env_reloc(void) |
922 | { | |
923 | fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); | |
924 | } | |
925 | #endif | |
926 | ||
f3c615b8 | 927 | static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
ea882baf WD |
928 | { |
929 | cmd_tbl_t *cp; | |
930 | ||
5904da02 | 931 | if (argc < 2) |
4c12eeb8 | 932 | return CMD_RET_USAGE; |
5904da02 | 933 | |
ea882baf WD |
934 | /* drop initial "env" arg */ |
935 | argc--; | |
936 | argv++; | |
937 | ||
938 | cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); | |
939 | ||
940 | if (cp) | |
941 | return cp->cmd(cmdtp, flag, argc, argv); | |
942 | ||
4c12eeb8 | 943 | return CMD_RET_USAGE; |
ea882baf WD |
944 | } |
945 | ||
946 | U_BOOT_CMD( | |
947 | env, CONFIG_SYS_MAXARGS, 1, do_env, | |
948 | "environment handling commands", | |
949 | #if defined(CONFIG_CMD_ASKENV) | |
950 | "ask name [message] [size] - ask for environment variable\nenv " | |
951 | #endif | |
952 | "default -f - reset default environment\n" | |
953 | #if defined(CONFIG_CMD_EDITENV) | |
954 | "env edit name - edit environment variable\n" | |
955 | #endif | |
4796bc4b | 956 | #if defined(CONFIG_CMD_EXPORTENV) |
37f2fe74 | 957 | "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n" |
4796bc4b | 958 | #endif |
a000b795 KP |
959 | #if defined(CONFIG_CMD_GREPENV) |
960 | "env grep string [...] - search environment\n" | |
961 | #endif | |
4796bc4b | 962 | #if defined(CONFIG_CMD_IMPORTENV) |
a000b795 | 963 | "env import [-d] [-t | -b | -c] addr [size] - import environment\n" |
4796bc4b | 964 | #endif |
ea882baf WD |
965 | "env print [name ...] - print environment\n" |
966 | #if defined(CONFIG_CMD_RUN) | |
967 | "env run var [...] - run commands in an environment variable\n" | |
968 | #endif | |
d798a9b5 | 969 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
ea882baf | 970 | "env save - save environment\n" |
d798a9b5 | 971 | #endif |
ea882baf WD |
972 | "env set [-f] name [arg ...]\n" |
973 | ); | |
974 | ||
975 | /* | |
976 | * Old command line interface, kept for compatibility | |
977 | */ | |
8bde7f77 | 978 | |
246c6922 | 979 | #if defined(CONFIG_CMD_EDITENV) |
722b061b | 980 | U_BOOT_CMD_COMPLETE( |
ea882baf | 981 | editenv, 2, 0, do_env_edit, |
246c6922 PT |
982 | "edit environment variable", |
983 | "name\n" | |
722b061b MF |
984 | " - edit environment variable 'name'", |
985 | var_complete | |
246c6922 PT |
986 | ); |
987 | #endif | |
988 | ||
722b061b | 989 | U_BOOT_CMD_COMPLETE( |
ea882baf | 990 | printenv, CONFIG_SYS_MAXARGS, 1, do_env_print, |
2fb2604d | 991 | "print environment variables", |
8bde7f77 WD |
992 | "\n - print values of all environment variables\n" |
993 | "printenv name ...\n" | |
722b061b MF |
994 | " - print value of environment variable 'name'", |
995 | var_complete | |
8bde7f77 WD |
996 | ); |
997 | ||
a000b795 KP |
998 | #ifdef CONFIG_CMD_GREPENV |
999 | U_BOOT_CMD_COMPLETE( | |
1000 | grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep, | |
1001 | "search environment variables", | |
1002 | "string ...\n" | |
1003 | " - list environment name=value pairs matching 'string'", | |
1004 | var_complete | |
1005 | ); | |
1006 | #endif | |
1007 | ||
722b061b | 1008 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1009 | setenv, CONFIG_SYS_MAXARGS, 0, do_env_set, |
2fb2604d | 1010 | "set environment variables", |
8bde7f77 WD |
1011 | "name value ...\n" |
1012 | " - set environment variable 'name' to 'value ...'\n" | |
1013 | "setenv name\n" | |
722b061b MF |
1014 | " - delete environment variable 'name'", |
1015 | var_complete | |
8bde7f77 WD |
1016 | ); |
1017 | ||
c76fe474 | 1018 | #if defined(CONFIG_CMD_ASKENV) |
8bde7f77 | 1019 | |
0d498393 | 1020 | U_BOOT_CMD( |
ea882baf | 1021 | askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask, |
2fb2604d | 1022 | "get environment variables from stdin", |
8bde7f77 WD |
1023 | "name [message] [size]\n" |
1024 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
1025 | "askenv name\n" | |
1026 | " - get environment variable 'name' from stdin\n" | |
1027 | "askenv name size\n" | |
1028 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
1029 | "askenv name [message] size\n" | |
1030 | " - display 'message' string and get environment variable 'name'" | |
a89c33db | 1031 | "from stdin (max 'size' chars)" |
8bde7f77 | 1032 | ); |
90253178 | 1033 | #endif |
8bde7f77 | 1034 | |
c76fe474 | 1035 | #if defined(CONFIG_CMD_RUN) |
722b061b | 1036 | U_BOOT_CMD_COMPLETE( |
6d0f6bcf | 1037 | run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d | 1038 | "run commands in an environment variable", |
8bde7f77 | 1039 | "var [...]\n" |
722b061b MF |
1040 | " - run the commands in the environment variable(s) 'var'", |
1041 | var_complete | |
8bde7f77 | 1042 | ); |
90253178 | 1043 | #endif |