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a68d3ed0 | 1 | /* |
ea009d47 | 2 | * (C) Copyright 2000-2013 |
a68d3ed0 WD |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
4 | * | |
5 | * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com> | |
6 | * Andreas Heppel <aheppel@sysgo.de> | |
a000b795 KP |
7 | * |
8 | * Copyright 2011 Freescale Semiconductor, Inc. | |
9 | * | |
3765b3e7 | 10 | * SPDX-License-Identifier: GPL-2.0+ |
a68d3ed0 WD |
11 | */ |
12 | ||
ea882baf | 13 | /* |
a68d3ed0 WD |
14 | * Support for persistent environment data |
15 | * | |
ea882baf WD |
16 | * The "environment" is stored on external storage as a list of '\0' |
17 | * terminated "name=value" strings. The end of the list is marked by | |
fc0b5948 | 18 | * a double '\0'. The environment is preceded by a 32 bit CRC over |
ea882baf WD |
19 | * the data part and, in case of redundant environment, a byte of |
20 | * flags. | |
a68d3ed0 | 21 | * |
ea882baf WD |
22 | * This linearized representation will also be used before |
23 | * relocation, i. e. as long as we don't have a full C runtime | |
24 | * environment. After that, we use a hash table. | |
a68d3ed0 WD |
25 | */ |
26 | ||
27 | #include <common.h> | |
18d66533 | 28 | #include <cli.h> |
a68d3ed0 | 29 | #include <command.h> |
24b852a7 | 30 | #include <console.h> |
a68d3ed0 | 31 | #include <environment.h> |
ea882baf WD |
32 | #include <search.h> |
33 | #include <errno.h> | |
246c6922 | 34 | #include <malloc.h> |
0eb25b61 | 35 | #include <mapmem.h> |
2a3cb020 | 36 | #include <watchdog.h> |
a68d3ed0 WD |
37 | #include <linux/stddef.h> |
38 | #include <asm/byteorder.h> | |
fd37dac9 | 39 | #include <asm/io.h> |
a68d3ed0 | 40 | |
d87080b7 WD |
41 | DECLARE_GLOBAL_DATA_PTR; |
42 | ||
f3c615b8 ML |
43 | #if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ |
44 | !defined(CONFIG_ENV_IS_IN_FLASH) && \ | |
f3c615b8 | 45 | !defined(CONFIG_ENV_IS_IN_MMC) && \ |
57210c7c | 46 | !defined(CONFIG_ENV_IS_IN_FAT) && \ |
fd1000b9 | 47 | !defined(CONFIG_ENV_IS_IN_EXT4) && \ |
f3c615b8 ML |
48 | !defined(CONFIG_ENV_IS_IN_NAND) && \ |
49 | !defined(CONFIG_ENV_IS_IN_NVRAM) && \ | |
50 | !defined(CONFIG_ENV_IS_IN_ONENAND) && \ | |
125d193c | 51 | !defined(CONFIG_ENV_IS_IN_SATA) && \ |
f3c615b8 | 52 | !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ |
0a85a9e7 | 53 | !defined(CONFIG_ENV_IS_IN_REMOTE) && \ |
2b74433f | 54 | !defined(CONFIG_ENV_IS_IN_UBI) && \ |
f3c615b8 | 55 | !defined(CONFIG_ENV_IS_NOWHERE) |
7b7341d7 | 56 | # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|MMC|FAT|EXT4|\ |
d1b88cd3 | 57 | NAND|NVRAM|ONENAND|SATA|SPI_FLASH|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE |
a68d3ed0 WD |
58 | #endif |
59 | ||
ea882baf WD |
60 | /* |
61 | * Maximum expected input data size for import command | |
62 | */ | |
63 | #define MAX_ENV_SIZE (1 << 20) /* 1 MiB */ | |
a68d3ed0 | 64 | |
da95427c | 65 | /* |
ea882baf | 66 | * This variable is incremented on each do_env_set(), so it can |
da95427c HS |
67 | * be used via get_env_id() as an indication, if the environment |
68 | * has changed or not. So it is possible to reread an environment | |
69 | * variable only if the environment was changed ... done so for | |
70 | * example in NetInitLoop() | |
71 | */ | |
2f70c49e | 72 | static int env_id = 1; |
a68d3ed0 | 73 | |
f3c615b8 | 74 | int get_env_id(void) |
2f70c49e HS |
75 | { |
76 | return env_id; | |
77 | } | |
a68d3ed0 | 78 | |
7ac2fe2d | 79 | #ifndef CONFIG_SPL_BUILD |
4c94f6c5 | 80 | /* |
ea882baf WD |
81 | * Command interface: print one or all environment variables |
82 | * | |
83 | * Returns 0 in case of error, or length of printed string | |
4c94f6c5 | 84 | */ |
be11235a | 85 | static int env_print(char *name, int flag) |
a68d3ed0 | 86 | { |
ea882baf | 87 | char *res = NULL; |
22a4a6c5 | 88 | ssize_t len; |
ea882baf WD |
89 | |
90 | if (name) { /* print a single name */ | |
91 | ENTRY e, *ep; | |
92 | ||
93 | e.key = name; | |
94 | e.data = NULL; | |
be11235a | 95 | hsearch_r(e, FIND, &ep, &env_htab, flag); |
ea882baf WD |
96 | if (ep == NULL) |
97 | return 0; | |
f3c615b8 | 98 | len = printf("%s=%s\n", ep->key, ep->data); |
ea882baf WD |
99 | return len; |
100 | } | |
a68d3ed0 | 101 | |
ea882baf | 102 | /* print whole list */ |
be11235a | 103 | len = hexport_r(&env_htab, '\n', flag, &res, 0, 0, NULL); |
a68d3ed0 | 104 | |
ea882baf WD |
105 | if (len > 0) { |
106 | puts(res); | |
107 | free(res); | |
108 | return len; | |
a68d3ed0 WD |
109 | } |
110 | ||
ea882baf | 111 | /* should never happen */ |
22a4a6c5 | 112 | printf("## Error: cannot export environment\n"); |
ea882baf | 113 | return 0; |
4c94f6c5 | 114 | } |
a68d3ed0 | 115 | |
088f1b19 KP |
116 | static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, |
117 | char * const argv[]) | |
4c94f6c5 MF |
118 | { |
119 | int i; | |
120 | int rcode = 0; | |
be11235a JH |
121 | int env_flag = H_HIDE_DOT; |
122 | ||
123 | if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') { | |
124 | argc--; | |
125 | argv++; | |
126 | env_flag &= ~H_HIDE_DOT; | |
127 | } | |
a68d3ed0 | 128 | |
4c94f6c5 MF |
129 | if (argc == 1) { |
130 | /* print all env vars */ | |
be11235a | 131 | rcode = env_print(NULL, env_flag); |
ea882baf | 132 | if (!rcode) |
4c94f6c5 MF |
133 | return 1; |
134 | printf("\nEnvironment size: %d/%ld bytes\n", | |
135 | rcode, (ulong)ENV_SIZE); | |
136 | return 0; | |
137 | } | |
a68d3ed0 | 138 | |
4c94f6c5 | 139 | /* print selected env vars */ |
be11235a | 140 | env_flag &= ~H_HIDE_DOT; |
4c94f6c5 | 141 | for (i = 1; i < argc; ++i) { |
be11235a | 142 | int rc = env_print(argv[i], env_flag); |
ea882baf WD |
143 | if (!rc) { |
144 | printf("## Error: \"%s\" not defined\n", argv[i]); | |
4c94f6c5 | 145 | ++rcode; |
a68d3ed0 WD |
146 | } |
147 | } | |
4c94f6c5 | 148 | |
a68d3ed0 WD |
149 | return rcode; |
150 | } | |
151 | ||
a000b795 | 152 | #ifdef CONFIG_CMD_GREPENV |
d09b1787 IG |
153 | static int do_env_grep(cmd_tbl_t *cmdtp, int flag, |
154 | int argc, char * const argv[]) | |
a000b795 | 155 | { |
5a31ea04 | 156 | char *res = NULL; |
be29df6a | 157 | int len, grep_how, grep_what; |
a000b795 KP |
158 | |
159 | if (argc < 2) | |
4c12eeb8 | 160 | return CMD_RET_USAGE; |
a000b795 | 161 | |
be29df6a WD |
162 | grep_how = H_MATCH_SUBSTR; /* default: substring search */ |
163 | grep_what = H_MATCH_BOTH; /* default: grep names and values */ | |
d87244d5 | 164 | |
9a832331 PA |
165 | while (--argc > 0 && **++argv == '-') { |
166 | char *arg = *argv; | |
d87244d5 WD |
167 | while (*++arg) { |
168 | switch (*arg) { | |
be29df6a WD |
169 | #ifdef CONFIG_REGEX |
170 | case 'e': /* use regex matching */ | |
171 | grep_how = H_MATCH_REGEX; | |
172 | break; | |
173 | #endif | |
d87244d5 | 174 | case 'n': /* grep for name */ |
be29df6a | 175 | grep_what = H_MATCH_KEY; |
d87244d5 WD |
176 | break; |
177 | case 'v': /* grep for value */ | |
be29df6a | 178 | grep_what = H_MATCH_DATA; |
d87244d5 WD |
179 | break; |
180 | case 'b': /* grep for both */ | |
be29df6a | 181 | grep_what = H_MATCH_BOTH; |
d87244d5 WD |
182 | break; |
183 | case '-': | |
184 | goto DONE; | |
185 | default: | |
186 | return CMD_RET_USAGE; | |
187 | } | |
188 | } | |
189 | } | |
190 | ||
191 | DONE: | |
5a31ea04 | 192 | len = hexport_r(&env_htab, '\n', |
be29df6a | 193 | flag | grep_what | grep_how, |
5a31ea04 | 194 | &res, 0, argc, argv); |
a000b795 | 195 | |
5a31ea04 WD |
196 | if (len > 0) { |
197 | puts(res); | |
198 | free(res); | |
a000b795 KP |
199 | } |
200 | ||
5a31ea04 WD |
201 | if (len < 2) |
202 | return 1; | |
203 | ||
204 | return 0; | |
a000b795 KP |
205 | } |
206 | #endif | |
7ac2fe2d | 207 | #endif /* CONFIG_SPL_BUILD */ |
a000b795 | 208 | |
c3f65258 GF |
209 | /* |
210 | * Set a new environment variable, | |
211 | * or replace or delete an existing one. | |
2598090b | 212 | */ |
94b467b1 | 213 | static int _do_env_set(int flag, int argc, char * const argv[], int env_flag) |
c3f65258 GF |
214 | { |
215 | int i, len; | |
216 | char *name, *value, *s; | |
217 | ENTRY e, *ep; | |
218 | ||
24ab5a19 JH |
219 | debug("Initial value for argc=%d\n", argc); |
220 | while (argc > 1 && **(argv + 1) == '-') { | |
221 | char *arg = *++argv; | |
222 | ||
223 | --argc; | |
224 | while (*++arg) { | |
225 | switch (*arg) { | |
226 | case 'f': /* force */ | |
227 | env_flag |= H_FORCE; | |
228 | break; | |
229 | default: | |
230 | return CMD_RET_USAGE; | |
231 | } | |
232 | } | |
233 | } | |
234 | debug("Final value for argc=%d\n", argc); | |
c3f65258 | 235 | name = argv[1]; |
c3f65258 GF |
236 | |
237 | if (strchr(name, '=')) { | |
238 | printf("## Error: illegal character '='" | |
239 | "in variable name \"%s\"\n", name); | |
240 | return 1; | |
241 | } | |
242 | ||
243 | env_id++; | |
c3f65258 | 244 | |
a68d3ed0 | 245 | /* Delete only ? */ |
d09b1787 | 246 | if (argc < 3 || argv[2] == NULL) { |
24ab5a19 | 247 | int rc = hdelete_r(name, &env_htab, env_flag); |
ea882baf | 248 | return !rc; |
a68d3ed0 WD |
249 | } |
250 | ||
251 | /* | |
ea882baf | 252 | * Insert / replace new value |
a68d3ed0 | 253 | */ |
f3c615b8 | 254 | for (i = 2, len = 0; i < argc; ++i) |
a68d3ed0 | 255 | len += strlen(argv[i]) + 1; |
f3c615b8 ML |
256 | |
257 | value = malloc(len); | |
258 | if (value == NULL) { | |
ea882baf | 259 | printf("## Can't malloc %d bytes\n", len); |
a68d3ed0 WD |
260 | return 1; |
261 | } | |
f3c615b8 | 262 | for (i = 2, s = value; i < argc; ++i) { |
ea882baf | 263 | char *v = argv[i]; |
a68d3ed0 | 264 | |
ea882baf | 265 | while ((*s++ = *v++) != '\0') |
a68d3ed0 | 266 | ; |
d09b1787 | 267 | *(s - 1) = ' '; |
ea882baf WD |
268 | } |
269 | if (s != value) | |
270 | *--s = '\0'; | |
271 | ||
d09b1787 IG |
272 | e.key = name; |
273 | e.data = value; | |
24ab5a19 | 274 | hsearch_r(e, ENTER, &ep, &env_htab, env_flag); |
ea882baf WD |
275 | free(value); |
276 | if (!ep) { | |
277 | printf("## Error inserting \"%s\" variable, errno=%d\n", | |
278 | name, errno); | |
279 | return 1; | |
a68d3ed0 | 280 | } |
a68d3ed0 | 281 | |
a68d3ed0 WD |
282 | return 0; |
283 | } | |
284 | ||
382bee57 | 285 | int env_set(const char *varname, const char *varvalue) |
a68d3ed0 | 286 | { |
84b5e802 WD |
287 | const char * const argv[4] = { "setenv", varname, varvalue, NULL }; |
288 | ||
a7eb1d66 JH |
289 | /* before import into hashtable */ |
290 | if (!(gd->flags & GD_FLG_ENV_READY)) | |
291 | return 1; | |
292 | ||
d09b1787 | 293 | if (varvalue == NULL || varvalue[0] == '\0') |
94b467b1 | 294 | return _do_env_set(0, 2, (char * const *)argv, H_PROGRAMMATIC); |
9ffd451a | 295 | else |
94b467b1 | 296 | return _do_env_set(0, 3, (char * const *)argv, H_PROGRAMMATIC); |
a68d3ed0 WD |
297 | } |
298 | ||
d67f10ce SG |
299 | /** |
300 | * Set an environment variable to an integer value | |
301 | * | |
9602286d | 302 | * @param varname Environment variable to set |
d67f10ce SG |
303 | * @param value Value to set it to |
304 | * @return 0 if ok, 1 on error | |
305 | */ | |
018f5303 | 306 | int env_set_ulong(const char *varname, ulong value) |
d67f10ce SG |
307 | { |
308 | /* TODO: this should be unsigned */ | |
309 | char *str = simple_itoa(value); | |
310 | ||
382bee57 | 311 | return env_set(varname, str); |
d67f10ce SG |
312 | } |
313 | ||
314 | /** | |
bfc59966 | 315 | * Set an environment variable to an value in hex |
d67f10ce | 316 | * |
9602286d | 317 | * @param varname Environment variable to set |
bfc59966 | 318 | * @param value Value to set it to |
d67f10ce SG |
319 | * @return 0 if ok, 1 on error |
320 | */ | |
018f5303 | 321 | int env_set_hex(const char *varname, ulong value) |
d67f10ce SG |
322 | { |
323 | char str[17]; | |
324 | ||
bfc59966 | 325 | sprintf(str, "%lx", value); |
382bee57 | 326 | return env_set(varname, str); |
d67f10ce SG |
327 | } |
328 | ||
bfebc8c9 | 329 | ulong env_get_hex(const char *varname, ulong default_val) |
76b8f79c SG |
330 | { |
331 | const char *s; | |
332 | ulong value; | |
333 | char *endp; | |
334 | ||
00caae6d | 335 | s = env_get(varname); |
76b8f79c SG |
336 | if (s) |
337 | value = simple_strtoul(s, &endp, 16); | |
338 | if (!s || endp == s) | |
339 | return default_val; | |
340 | ||
341 | return value; | |
342 | } | |
343 | ||
7ac2fe2d | 344 | #ifndef CONFIG_SPL_BUILD |
088f1b19 | 345 | static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 346 | { |
47e26b1b | 347 | if (argc < 2) |
4c12eeb8 | 348 | return CMD_RET_USAGE; |
a68d3ed0 | 349 | |
94b467b1 | 350 | return _do_env_set(flag, argc, argv, H_INTERACTIVE); |
a68d3ed0 WD |
351 | } |
352 | ||
ea882baf | 353 | /* |
a68d3ed0 WD |
354 | * Prompt for environment variable |
355 | */ | |
c76fe474 | 356 | #if defined(CONFIG_CMD_ASKENV) |
f3c615b8 | 357 | int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 358 | { |
6d0f6bcf | 359 | char message[CONFIG_SYS_CBSIZE]; |
7d85591d | 360 | int i, len, pos, size; |
a68d3ed0 | 361 | char *local_args[4]; |
7d85591d | 362 | char *endptr; |
a68d3ed0 WD |
363 | |
364 | local_args[0] = argv[0]; | |
365 | local_args[1] = argv[1]; | |
366 | local_args[2] = NULL; | |
367 | local_args[3] = NULL; | |
368 | ||
7d85591d WD |
369 | /* |
370 | * Check the syntax: | |
371 | * | |
372 | * env_ask envname [message1 ...] [size] | |
373 | */ | |
374 | if (argc == 1) | |
4c12eeb8 | 375 | return CMD_RET_USAGE; |
a68d3ed0 | 376 | |
7d85591d WD |
377 | /* |
378 | * We test the last argument if it can be converted | |
379 | * into a decimal number. If yes, we assume it's | |
380 | * the size. Otherwise we echo it as part of the | |
381 | * message. | |
382 | */ | |
383 | i = simple_strtoul(argv[argc - 1], &endptr, 10); | |
384 | if (*endptr != '\0') { /* no size */ | |
385 | size = CONFIG_SYS_CBSIZE - 1; | |
386 | } else { /* size given */ | |
387 | size = i; | |
388 | --argc; | |
389 | } | |
a68d3ed0 | 390 | |
7d85591d WD |
391 | if (argc <= 2) { |
392 | sprintf(message, "Please enter '%s': ", argv[1]); | |
393 | } else { | |
394 | /* env_ask envname message1 ... messagen [size] */ | |
bf52fcde | 395 | for (i = 2, pos = 0; i < argc && pos+1 < sizeof(message); i++) { |
f3c615b8 | 396 | if (pos) |
a68d3ed0 | 397 | message[pos++] = ' '; |
f3c615b8 | 398 | |
c667723f | 399 | strncpy(message + pos, argv[i], sizeof(message) - pos); |
a68d3ed0 WD |
400 | pos += strlen(argv[i]); |
401 | } | |
c667723f TR |
402 | if (pos < sizeof(message) - 1) { |
403 | message[pos++] = ' '; | |
404 | message[pos] = '\0'; | |
405 | } else | |
406 | message[CONFIG_SYS_CBSIZE - 1] = '\0'; | |
a68d3ed0 WD |
407 | } |
408 | ||
6d0f6bcf JCPV |
409 | if (size >= CONFIG_SYS_CBSIZE) |
410 | size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
411 | |
412 | if (size <= 0) | |
413 | return 1; | |
414 | ||
415 | /* prompt for input */ | |
e1bf824d | 416 | len = cli_readline(message); |
a68d3ed0 WD |
417 | |
418 | if (size < len) | |
419 | console_buffer[size] = '\0'; | |
420 | ||
421 | len = 2; | |
422 | if (console_buffer[0] != '\0') { | |
423 | local_args[2] = console_buffer; | |
424 | len = 3; | |
425 | } | |
426 | ||
427 | /* Continue calling setenv code */ | |
94b467b1 | 428 | return _do_env_set(flag, len, local_args, H_INTERACTIVE); |
a68d3ed0 | 429 | } |
90253178 | 430 | #endif |
a68d3ed0 | 431 | |
5e2b3e0c | 432 | #if defined(CONFIG_CMD_ENV_CALLBACK) |
cca98fd6 JH |
433 | static int print_static_binding(const char *var_name, const char *callback_name, |
434 | void *priv) | |
5e2b3e0c JH |
435 | { |
436 | printf("\t%-20s %-20s\n", var_name, callback_name); | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
441 | static int print_active_callback(ENTRY *entry) | |
442 | { | |
443 | struct env_clbk_tbl *clbkp; | |
444 | int i; | |
445 | int num_callbacks; | |
446 | ||
447 | if (entry->callback == NULL) | |
448 | return 0; | |
449 | ||
450 | /* look up the callback in the linker-list */ | |
451 | num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk); | |
452 | for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk); | |
453 | i < num_callbacks; | |
454 | i++, clbkp++) { | |
455 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) | |
456 | if (entry->callback == clbkp->callback + gd->reloc_off) | |
457 | #else | |
458 | if (entry->callback == clbkp->callback) | |
459 | #endif | |
460 | break; | |
461 | } | |
462 | ||
463 | if (i == num_callbacks) | |
464 | /* this should probably never happen, but just in case... */ | |
465 | printf("\t%-20s %p\n", entry->key, entry->callback); | |
466 | else | |
467 | printf("\t%-20s %-20s\n", entry->key, clbkp->name); | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | /* | |
473 | * Print the callbacks available and what they are bound to | |
474 | */ | |
475 | int do_env_callback(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
476 | { | |
477 | struct env_clbk_tbl *clbkp; | |
478 | int i; | |
479 | int num_callbacks; | |
480 | ||
481 | /* Print the available callbacks */ | |
482 | puts("Available callbacks:\n"); | |
483 | puts("\tCallback Name\n"); | |
484 | puts("\t-------------\n"); | |
485 | num_callbacks = ll_entry_count(struct env_clbk_tbl, env_clbk); | |
486 | for (i = 0, clbkp = ll_entry_start(struct env_clbk_tbl, env_clbk); | |
487 | i < num_callbacks; | |
488 | i++, clbkp++) | |
489 | printf("\t%s\n", clbkp->name); | |
490 | puts("\n"); | |
491 | ||
492 | /* Print the static bindings that may exist */ | |
493 | puts("Static callback bindings:\n"); | |
494 | printf("\t%-20s %-20s\n", "Variable Name", "Callback Name"); | |
495 | printf("\t%-20s %-20s\n", "-------------", "-------------"); | |
cca98fd6 | 496 | env_attr_walk(ENV_CALLBACK_LIST_STATIC, print_static_binding, NULL); |
5e2b3e0c JH |
497 | puts("\n"); |
498 | ||
499 | /* walk through each variable and print the callback if it has one */ | |
500 | puts("Active callback bindings:\n"); | |
501 | printf("\t%-20s %-20s\n", "Variable Name", "Callback Name"); | |
502 | printf("\t%-20s %-20s\n", "-------------", "-------------"); | |
503 | hwalk_r(&env_htab, print_active_callback); | |
504 | return 0; | |
505 | } | |
506 | #endif | |
507 | ||
fffad71b | 508 | #if defined(CONFIG_CMD_ENV_FLAGS) |
cca98fd6 JH |
509 | static int print_static_flags(const char *var_name, const char *flags, |
510 | void *priv) | |
fffad71b JH |
511 | { |
512 | enum env_flags_vartype type = env_flags_parse_vartype(flags); | |
267541f7 | 513 | enum env_flags_varaccess access = env_flags_parse_varaccess(flags); |
fffad71b | 514 | |
267541f7 JH |
515 | printf("\t%-20s %-20s %-20s\n", var_name, |
516 | env_flags_get_vartype_name(type), | |
517 | env_flags_get_varaccess_name(access)); | |
fffad71b JH |
518 | |
519 | return 0; | |
520 | } | |
521 | ||
522 | static int print_active_flags(ENTRY *entry) | |
523 | { | |
524 | enum env_flags_vartype type; | |
267541f7 | 525 | enum env_flags_varaccess access; |
fffad71b JH |
526 | |
527 | if (entry->flags == 0) | |
528 | return 0; | |
529 | ||
530 | type = (enum env_flags_vartype) | |
531 | (entry->flags & ENV_FLAGS_VARTYPE_BIN_MASK); | |
267541f7 JH |
532 | access = env_flags_parse_varaccess_from_binflags(entry->flags); |
533 | printf("\t%-20s %-20s %-20s\n", entry->key, | |
534 | env_flags_get_vartype_name(type), | |
535 | env_flags_get_varaccess_name(access)); | |
fffad71b JH |
536 | |
537 | return 0; | |
538 | } | |
539 | ||
540 | /* | |
541 | * Print the flags available and what variables have flags | |
542 | */ | |
543 | int do_env_flags(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
544 | { | |
545 | /* Print the available variable types */ | |
546 | printf("Available variable type flags (position %d):\n", | |
547 | ENV_FLAGS_VARTYPE_LOC); | |
548 | puts("\tFlag\tVariable Type Name\n"); | |
549 | puts("\t----\t------------------\n"); | |
550 | env_flags_print_vartypes(); | |
551 | puts("\n"); | |
552 | ||
267541f7 JH |
553 | /* Print the available variable access types */ |
554 | printf("Available variable access flags (position %d):\n", | |
555 | ENV_FLAGS_VARACCESS_LOC); | |
556 | puts("\tFlag\tVariable Access Name\n"); | |
557 | puts("\t----\t--------------------\n"); | |
558 | env_flags_print_varaccess(); | |
559 | puts("\n"); | |
560 | ||
fffad71b JH |
561 | /* Print the static flags that may exist */ |
562 | puts("Static flags:\n"); | |
267541f7 JH |
563 | printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type", |
564 | "Variable Access"); | |
565 | printf("\t%-20s %-20s %-20s\n", "-------------", "-------------", | |
566 | "---------------"); | |
cca98fd6 | 567 | env_attr_walk(ENV_FLAGS_LIST_STATIC, print_static_flags, NULL); |
fffad71b JH |
568 | puts("\n"); |
569 | ||
570 | /* walk through each variable and print the flags if non-default */ | |
571 | puts("Active flags:\n"); | |
267541f7 JH |
572 | printf("\t%-20s %-20s %-20s\n", "Variable Name", "Variable Type", |
573 | "Variable Access"); | |
574 | printf("\t%-20s %-20s %-20s\n", "-------------", "-------------", | |
575 | "---------------"); | |
fffad71b JH |
576 | hwalk_r(&env_htab, print_active_flags); |
577 | return 0; | |
578 | } | |
579 | #endif | |
580 | ||
ea882baf | 581 | /* |
246c6922 PT |
582 | * Interactively edit an environment variable |
583 | */ | |
584 | #if defined(CONFIG_CMD_EDITENV) | |
088f1b19 KP |
585 | static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, |
586 | char * const argv[]) | |
246c6922 PT |
587 | { |
588 | char buffer[CONFIG_SYS_CBSIZE]; | |
589 | char *init_val; | |
246c6922 | 590 | |
47e26b1b | 591 | if (argc < 2) |
4c12eeb8 | 592 | return CMD_RET_USAGE; |
246c6922 | 593 | |
94b467b1 JH |
594 | /* before import into hashtable */ |
595 | if (!(gd->flags & GD_FLG_ENV_READY)) | |
596 | return 1; | |
597 | ||
246c6922 | 598 | /* Set read buffer to initial value or empty sting */ |
00caae6d | 599 | init_val = env_get(argv[1]); |
246c6922 | 600 | if (init_val) |
5d49b4cd | 601 | snprintf(buffer, CONFIG_SYS_CBSIZE, "%s", init_val); |
246c6922 PT |
602 | else |
603 | buffer[0] = '\0'; | |
604 | ||
e1bf824d | 605 | if (cli_readline_into_buffer("edit: ", buffer, 0) < 0) |
18a3cce9 | 606 | return 1; |
246c6922 | 607 | |
94b467b1 JH |
608 | if (buffer[0] == '\0') { |
609 | const char * const _argv[3] = { "setenv", argv[1], NULL }; | |
610 | ||
611 | return _do_env_set(0, 2, (char * const *)_argv, H_INTERACTIVE); | |
612 | } else { | |
613 | const char * const _argv[4] = { "setenv", argv[1], buffer, | |
614 | NULL }; | |
615 | ||
616 | return _do_env_set(0, 3, (char * const *)_argv, H_INTERACTIVE); | |
617 | } | |
246c6922 PT |
618 | } |
619 | #endif /* CONFIG_CMD_EDITENV */ | |
7ac2fe2d | 620 | #endif /* CONFIG_SPL_BUILD */ |
246c6922 | 621 | |
ea882baf | 622 | /* |
a68d3ed0 WD |
623 | * Look up variable from environment, |
624 | * return address of storage for that variable, | |
625 | * or NULL if not found | |
626 | */ | |
00caae6d | 627 | char *env_get(const char *name) |
a68d3ed0 | 628 | { |
d09b1787 | 629 | if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */ |
ea882baf | 630 | ENTRY e, *ep; |
a68d3ed0 | 631 | |
91a76751 | 632 | WATCHDOG_RESET(); |
2a3cb020 | 633 | |
d09b1787 IG |
634 | e.key = name; |
635 | e.data = NULL; | |
c4e0057f | 636 | hsearch_r(e, FIND, &ep, &env_htab, 0); |
91a76751 | 637 | |
f3c615b8 | 638 | return ep ? ep->data : NULL; |
a68d3ed0 WD |
639 | } |
640 | ||
ea882baf | 641 | /* restricted capabilities before import */ |
00caae6d | 642 | if (env_get_f(name, (char *)(gd->env_buf), sizeof(gd->env_buf)) > 0) |
ea882baf | 643 | return (char *)(gd->env_buf); |
91a76751 | 644 | |
ea882baf | 645 | return NULL; |
a68d3ed0 WD |
646 | } |
647 | ||
ea882baf WD |
648 | /* |
649 | * Look up variable from environment for restricted C runtime env. | |
650 | */ | |
00caae6d | 651 | int env_get_f(const char *name, char *buf, unsigned len) |
a68d3ed0 | 652 | { |
87c7fb39 | 653 | int i, nxt, c; |
a68d3ed0 | 654 | |
d09b1787 | 655 | for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) { |
a68d3ed0 WD |
656 | int val, n; |
657 | ||
87c7fb39 SG |
658 | for (nxt = i; (c = env_get_char(nxt)) != '\0'; ++nxt) { |
659 | if (c < 0) | |
660 | return c; | |
f3c615b8 ML |
661 | if (nxt >= CONFIG_ENV_SIZE) |
662 | return -1; | |
a68d3ed0 | 663 | } |
f3c615b8 ML |
664 | |
665 | val = envmatch((uchar *)name, i); | |
666 | if (val < 0) | |
a68d3ed0 | 667 | continue; |
9ed4a958 | 668 | |
a68d3ed0 | 669 | /* found; copy out */ |
f3c615b8 | 670 | for (n = 0; n < len; ++n, ++buf) { |
87c7fb39 SG |
671 | c = env_get_char(val++); |
672 | if (c < 0) | |
673 | return c; | |
674 | *buf = c; | |
d09b1787 | 675 | if (*buf == '\0') |
9ed4a958 WD |
676 | return n; |
677 | } | |
678 | ||
679 | if (n) | |
680 | *--buf = '\0'; | |
681 | ||
a02a884b WD |
682 | printf("env_buf [%d bytes] too small for value of \"%s\"\n", |
683 | len, name); | |
9ed4a958 WD |
684 | |
685 | return n; | |
a68d3ed0 | 686 | } |
d09b1787 | 687 | |
f3c615b8 | 688 | return -1; |
a68d3ed0 WD |
689 | } |
690 | ||
4a9b4131 SG |
691 | /** |
692 | * Decode the integer value of an environment variable and return it. | |
693 | * | |
694 | * @param name Name of environemnt variable | |
695 | * @param base Number base to use (normally 10, or 16 for hex) | |
696 | * @param default_val Default value to return if the variable is not | |
697 | * found | |
698 | * @return the decoded value, or default_val if not found | |
699 | */ | |
bfebc8c9 | 700 | ulong env_get_ulong(const char *name, int base, ulong default_val) |
4a9b4131 SG |
701 | { |
702 | /* | |
00caae6d | 703 | * We can use env_get() here, even before relocation, since the |
4a9b4131 SG |
704 | * environment variable value is an integer and thus short. |
705 | */ | |
00caae6d | 706 | const char *str = env_get(name); |
4a9b4131 SG |
707 | |
708 | return str ? simple_strtoul(str, NULL, base) : default_val; | |
709 | } | |
710 | ||
7ac2fe2d | 711 | #ifndef CONFIG_SPL_BUILD |
bdab39d3 | 712 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
088f1b19 KP |
713 | static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, |
714 | char * const argv[]) | |
a68d3ed0 | 715 | { |
01510091 | 716 | return env_save() ? 1 : 0; |
a68d3ed0 | 717 | } |
8bde7f77 | 718 | |
ba69dc26 | 719 | U_BOOT_CMD( |
ea882baf | 720 | saveenv, 1, 0, do_env_save, |
2fb2604d | 721 | "save environment variables to persistent storage", |
a89c33db | 722 | "" |
ba69dc26 | 723 | ); |
a68d3ed0 | 724 | #endif |
7ac2fe2d | 725 | #endif /* CONFIG_SPL_BUILD */ |
a68d3ed0 WD |
726 | |
727 | ||
ea882baf | 728 | /* |
a68d3ed0 WD |
729 | * Match a name / name=value pair |
730 | * | |
731 | * s1 is either a simple 'name', or a 'name=value' pair. | |
732 | * i2 is the environment index for a 'name2=value2' pair. | |
d09b1787 | 733 | * If the names match, return the index for the value2, else -1. |
a68d3ed0 | 734 | */ |
f3c615b8 | 735 | int envmatch(uchar *s1, int i2) |
a68d3ed0 | 736 | { |
586197df JH |
737 | if (s1 == NULL) |
738 | return -1; | |
739 | ||
a68d3ed0 WD |
740 | while (*s1 == env_get_char(i2++)) |
741 | if (*s1++ == '=') | |
f3c615b8 | 742 | return i2; |
d09b1787 | 743 | |
a68d3ed0 | 744 | if (*s1 == '\0' && env_get_char(i2-1) == '=') |
f3c615b8 | 745 | return i2; |
d09b1787 | 746 | |
f3c615b8 | 747 | return -1; |
a68d3ed0 | 748 | } |
8bde7f77 | 749 | |
7ac2fe2d | 750 | #ifndef CONFIG_SPL_BUILD |
b64b7c3d | 751 | static int do_env_default(cmd_tbl_t *cmdtp, int __flag, |
d09b1787 | 752 | int argc, char * const argv[]) |
ea882baf | 753 | { |
b64b7c3d | 754 | int all = 0, flag = 0; |
f3c615b8 | 755 | |
b64b7c3d GF |
756 | debug("Initial value for argc=%d\n", argc); |
757 | while (--argc > 0 && **++argv == '-') { | |
758 | char *arg = *argv; | |
759 | ||
760 | while (*++arg) { | |
761 | switch (*arg) { | |
762 | case 'a': /* default all */ | |
763 | all = 1; | |
764 | break; | |
765 | case 'f': /* force */ | |
766 | flag |= H_FORCE; | |
767 | break; | |
768 | default: | |
769 | return cmd_usage(cmdtp); | |
770 | } | |
771 | } | |
772 | } | |
773 | debug("Final value for argc=%d\n", argc); | |
774 | if (all && (argc == 0)) { | |
775 | /* Reset the whole environment */ | |
776 | set_default_env("## Resetting to default environment\n"); | |
777 | return 0; | |
778 | } | |
779 | if (!all && (argc > 0)) { | |
780 | /* Reset individual variables */ | |
781 | set_default_vars(argc, argv); | |
782 | return 0; | |
783 | } | |
784 | ||
785 | return cmd_usage(cmdtp); | |
ea882baf WD |
786 | } |
787 | ||
d09b1787 IG |
788 | static int do_env_delete(cmd_tbl_t *cmdtp, int flag, |
789 | int argc, char * const argv[]) | |
ea882baf | 790 | { |
9d8d661d JH |
791 | int env_flag = H_INTERACTIVE; |
792 | int ret = 0; | |
793 | ||
794 | debug("Initial value for argc=%d\n", argc); | |
795 | while (argc > 1 && **(argv + 1) == '-') { | |
796 | char *arg = *++argv; | |
797 | ||
798 | --argc; | |
799 | while (*++arg) { | |
800 | switch (*arg) { | |
801 | case 'f': /* force */ | |
802 | env_flag |= H_FORCE; | |
803 | break; | |
804 | default: | |
805 | return CMD_RET_USAGE; | |
806 | } | |
807 | } | |
808 | } | |
809 | debug("Final value for argc=%d\n", argc); | |
810 | ||
811 | env_id++; | |
812 | ||
813 | while (--argc > 0) { | |
814 | char *name = *++argv; | |
815 | ||
816 | if (!hdelete_r(name, &env_htab, env_flag)) | |
817 | ret = 1; | |
818 | } | |
819 | ||
820 | return ret; | |
ea882baf WD |
821 | } |
822 | ||
0c79cda0 | 823 | #ifdef CONFIG_CMD_EXPORTENV |
ea882baf | 824 | /* |
37f2fe74 | 825 | * env export [-t | -b | -c] [-s size] addr [var ...] |
ea882baf WD |
826 | * -t: export as text format; if size is given, data will be |
827 | * padded with '\0' bytes; if not, one terminating '\0' | |
828 | * will be added (which is included in the "filesize" | |
829 | * setting so you can for exmple copy this to flash and | |
830 | * keep the termination). | |
831 | * -b: export as binary format (name=value pairs separated by | |
832 | * '\0', list end marked by double "\0\0") | |
833 | * -c: export as checksum protected environment format as | |
834 | * used for example by "saveenv" command | |
37f2fe74 WD |
835 | * -s size: |
836 | * size of output buffer | |
ea882baf | 837 | * addr: memory address where environment gets stored |
37f2fe74 WD |
838 | * var... List of variable names that get included into the |
839 | * export. Without arguments, the whole environment gets | |
840 | * exported. | |
ea882baf WD |
841 | * |
842 | * With "-c" and size is NOT given, then the export command will | |
843 | * format the data as currently used for the persistent storage, | |
844 | * i. e. it will use CONFIG_ENV_SECT_SIZE as output block size and | |
fc0b5948 | 845 | * prepend a valid CRC32 checksum and, in case of redundant |
ea882baf WD |
846 | * environment, a "current" redundancy flag. If size is given, this |
847 | * value will be used instead of CONFIG_ENV_SECT_SIZE; again, CRC32 | |
848 | * checksum and redundancy flag will be inserted. | |
849 | * | |
850 | * With "-b" and "-t", always only the real data (including a | |
851 | * terminating '\0' byte) will be written; here the optional size | |
852 | * argument will be used to make sure not to overflow the user | |
853 | * provided buffer; the command will abort if the size is not | |
fc0b5948 | 854 | * sufficient. Any remaining space will be '\0' padded. |
ea882baf WD |
855 | * |
856 | * On successful return, the variable "filesize" will be set. | |
857 | * Note that filesize includes the trailing/terminating '\0' byte(s). | |
858 | * | |
fc0b5948 | 859 | * Usage scenario: create a text snapshot/backup of the current settings: |
ea882baf WD |
860 | * |
861 | * => env export -t 100000 | |
862 | * => era ${backup_addr} +${filesize} | |
863 | * => cp.b 100000 ${backup_addr} ${filesize} | |
864 | * | |
865 | * Re-import this snapshot, deleting all other settings: | |
866 | * | |
867 | * => env import -d -t ${backup_addr} | |
868 | */ | |
d09b1787 IG |
869 | static int do_env_export(cmd_tbl_t *cmdtp, int flag, |
870 | int argc, char * const argv[]) | |
ea882baf WD |
871 | { |
872 | char buf[32]; | |
fd37dac9 SG |
873 | ulong addr; |
874 | char *ptr, *cmd, *res; | |
37f2fe74 | 875 | size_t size = 0; |
ea882baf WD |
876 | ssize_t len; |
877 | env_t *envp; | |
878 | char sep = '\n'; | |
879 | int chk = 0; | |
880 | int fmt = 0; | |
881 | ||
882 | cmd = *argv; | |
883 | ||
884 | while (--argc > 0 && **++argv == '-') { | |
885 | char *arg = *argv; | |
886 | while (*++arg) { | |
887 | switch (*arg) { | |
888 | case 'b': /* raw binary format */ | |
889 | if (fmt++) | |
890 | goto sep_err; | |
891 | sep = '\0'; | |
892 | break; | |
893 | case 'c': /* external checksum format */ | |
894 | if (fmt++) | |
895 | goto sep_err; | |
896 | sep = '\0'; | |
897 | chk = 1; | |
898 | break; | |
37f2fe74 WD |
899 | case 's': /* size given */ |
900 | if (--argc <= 0) | |
901 | return cmd_usage(cmdtp); | |
902 | size = simple_strtoul(*++argv, NULL, 16); | |
903 | goto NXTARG; | |
ea882baf WD |
904 | case 't': /* text format */ |
905 | if (fmt++) | |
906 | goto sep_err; | |
907 | sep = '\n'; | |
908 | break; | |
909 | default: | |
4c12eeb8 | 910 | return CMD_RET_USAGE; |
ea882baf WD |
911 | } |
912 | } | |
37f2fe74 | 913 | NXTARG: ; |
ea882baf WD |
914 | } |
915 | ||
f3c615b8 | 916 | if (argc < 1) |
4c12eeb8 | 917 | return CMD_RET_USAGE; |
8bde7f77 | 918 | |
fd37dac9 SG |
919 | addr = simple_strtoul(argv[0], NULL, 16); |
920 | ptr = map_sysmem(addr, size); | |
ea882baf | 921 | |
37f2fe74 | 922 | if (size) |
fd37dac9 | 923 | memset(ptr, '\0', size); |
37f2fe74 WD |
924 | |
925 | argc--; | |
926 | argv++; | |
ea882baf WD |
927 | |
928 | if (sep) { /* export as text file */ | |
ea009d47 WD |
929 | len = hexport_r(&env_htab, sep, |
930 | H_MATCH_KEY | H_MATCH_IDENT, | |
fd37dac9 | 931 | &ptr, size, argc, argv); |
ea882baf | 932 | if (len < 0) { |
9b643e31 | 933 | pr_err("Cannot export environment: errno = %d\n", errno); |
ea882baf WD |
934 | return 1; |
935 | } | |
8c3aff52 | 936 | sprintf(buf, "%zX", (size_t)len); |
382bee57 | 937 | env_set("filesize", buf); |
ea882baf WD |
938 | |
939 | return 0; | |
940 | } | |
941 | ||
fd37dac9 | 942 | envp = (env_t *)ptr; |
ea882baf WD |
943 | |
944 | if (chk) /* export as checksum protected block */ | |
945 | res = (char *)envp->data; | |
946 | else /* export as raw binary data */ | |
fd37dac9 | 947 | res = ptr; |
ea882baf | 948 | |
ea009d47 WD |
949 | len = hexport_r(&env_htab, '\0', |
950 | H_MATCH_KEY | H_MATCH_IDENT, | |
951 | &res, ENV_SIZE, argc, argv); | |
ea882baf | 952 | if (len < 0) { |
9b643e31 | 953 | pr_err("Cannot export environment: errno = %d\n", errno); |
ea882baf WD |
954 | return 1; |
955 | } | |
956 | ||
957 | if (chk) { | |
d09b1787 | 958 | envp->crc = crc32(0, envp->data, ENV_SIZE); |
ea882baf WD |
959 | #ifdef CONFIG_ENV_ADDR_REDUND |
960 | envp->flags = ACTIVE_FLAG; | |
961 | #endif | |
962 | } | |
018f5303 | 963 | env_set_hex("filesize", len + offsetof(env_t, data)); |
ea882baf WD |
964 | |
965 | return 0; | |
966 | ||
967 | sep_err: | |
d09b1787 | 968 | printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd); |
ea882baf WD |
969 | return 1; |
970 | } | |
0c79cda0 | 971 | #endif |
ea882baf | 972 | |
0c79cda0 | 973 | #ifdef CONFIG_CMD_IMPORTENV |
ea882baf | 974 | /* |
ecd1446f | 975 | * env import [-d] [-t [-r] | -b | -c] addr [size] |
ea882baf | 976 | * -d: delete existing environment before importing; |
fc0b5948 | 977 | * otherwise overwrite / append to existing definitions |
ea882baf WD |
978 | * -t: assume text format; either "size" must be given or the |
979 | * text data must be '\0' terminated | |
ecd1446f AH |
980 | * -r: handle CRLF like LF, that means exported variables with |
981 | * a content which ends with \r won't get imported. Used | |
982 | * to import text files created with editors which are using CRLF | |
983 | * for line endings. Only effective in addition to -t. | |
ea882baf WD |
984 | * -b: assume binary format ('\0' separated, "\0\0" terminated) |
985 | * -c: assume checksum protected environment format | |
986 | * addr: memory address to read from | |
987 | * size: length of input data; if missing, proper '\0' | |
988 | * termination is mandatory | |
989 | */ | |
d09b1787 IG |
990 | static int do_env_import(cmd_tbl_t *cmdtp, int flag, |
991 | int argc, char * const argv[]) | |
ea882baf | 992 | { |
fd37dac9 SG |
993 | ulong addr; |
994 | char *cmd, *ptr; | |
ea882baf WD |
995 | char sep = '\n'; |
996 | int chk = 0; | |
997 | int fmt = 0; | |
998 | int del = 0; | |
ecd1446f | 999 | int crlf_is_lf = 0; |
ea882baf WD |
1000 | size_t size; |
1001 | ||
1002 | cmd = *argv; | |
1003 | ||
1004 | while (--argc > 0 && **++argv == '-') { | |
1005 | char *arg = *argv; | |
1006 | while (*++arg) { | |
1007 | switch (*arg) { | |
1008 | case 'b': /* raw binary format */ | |
1009 | if (fmt++) | |
1010 | goto sep_err; | |
1011 | sep = '\0'; | |
1012 | break; | |
1013 | case 'c': /* external checksum format */ | |
1014 | if (fmt++) | |
1015 | goto sep_err; | |
1016 | sep = '\0'; | |
1017 | chk = 1; | |
1018 | break; | |
1019 | case 't': /* text format */ | |
1020 | if (fmt++) | |
1021 | goto sep_err; | |
1022 | sep = '\n'; | |
1023 | break; | |
ecd1446f AH |
1024 | case 'r': /* handle CRLF like LF */ |
1025 | crlf_is_lf = 1; | |
1026 | break; | |
ea882baf WD |
1027 | case 'd': |
1028 | del = 1; | |
1029 | break; | |
1030 | default: | |
4c12eeb8 | 1031 | return CMD_RET_USAGE; |
ea882baf WD |
1032 | } |
1033 | } | |
1034 | } | |
1035 | ||
f3c615b8 | 1036 | if (argc < 1) |
4c12eeb8 | 1037 | return CMD_RET_USAGE; |
ea882baf WD |
1038 | |
1039 | if (!fmt) | |
1040 | printf("## Warning: defaulting to text format\n"); | |
1041 | ||
ecd1446f AH |
1042 | if (sep != '\n' && crlf_is_lf ) |
1043 | crlf_is_lf = 0; | |
1044 | ||
fd37dac9 SG |
1045 | addr = simple_strtoul(argv[0], NULL, 16); |
1046 | ptr = map_sysmem(addr, 0); | |
ea882baf WD |
1047 | |
1048 | if (argc == 2) { | |
1049 | size = simple_strtoul(argv[1], NULL, 16); | |
3775dcd9 TR |
1050 | } else if (argc == 1 && chk) { |
1051 | puts("## Error: external checksum format must pass size\n"); | |
1052 | return CMD_RET_FAILURE; | |
ea882baf | 1053 | } else { |
fd37dac9 | 1054 | char *s = ptr; |
ea882baf WD |
1055 | |
1056 | size = 0; | |
1057 | ||
1058 | while (size < MAX_ENV_SIZE) { | |
1059 | if ((*s == sep) && (*(s+1) == '\0')) | |
1060 | break; | |
1061 | ++s; | |
1062 | ++size; | |
1063 | } | |
1064 | if (size == MAX_ENV_SIZE) { | |
1065 | printf("## Warning: Input data exceeds %d bytes" | |
1066 | " - truncated\n", MAX_ENV_SIZE); | |
1067 | } | |
d3f80c77 | 1068 | size += 2; |
79afc88d | 1069 | printf("## Info: input data size = %zu = 0x%zX\n", size, size); |
ea882baf WD |
1070 | } |
1071 | ||
1072 | if (chk) { | |
1073 | uint32_t crc; | |
fd37dac9 | 1074 | env_t *ep = (env_t *)ptr; |
ea882baf WD |
1075 | |
1076 | size -= offsetof(env_t, data); | |
1077 | memcpy(&crc, &ep->crc, sizeof(crc)); | |
1078 | ||
1079 | if (crc32(0, ep->data, size) != crc) { | |
1080 | puts("## Error: bad CRC, import failed\n"); | |
1081 | return 1; | |
1082 | } | |
fd37dac9 | 1083 | ptr = (char *)ep->data; |
ea882baf WD |
1084 | } |
1085 | ||
ecd1446f AH |
1086 | if (himport_r(&env_htab, ptr, size, sep, del ? 0 : H_NOCLEAR, |
1087 | crlf_is_lf, 0, NULL) == 0) { | |
9b643e31 | 1088 | pr_err("Environment import failed: errno = %d\n", errno); |
ea882baf WD |
1089 | return 1; |
1090 | } | |
1091 | gd->flags |= GD_FLG_ENV_READY; | |
1092 | ||
1093 | return 0; | |
1094 | ||
1095 | sep_err: | |
1096 | printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", | |
1097 | cmd); | |
1098 | return 1; | |
1099 | } | |
0c79cda0 | 1100 | #endif |
ea882baf | 1101 | |
88733e2c AR |
1102 | #if defined(CONFIG_CMD_ENV_EXISTS) |
1103 | static int do_env_exists(cmd_tbl_t *cmdtp, int flag, int argc, | |
1104 | char * const argv[]) | |
1105 | { | |
1106 | ENTRY e, *ep; | |
1107 | ||
1108 | if (argc < 2) | |
1109 | return CMD_RET_USAGE; | |
1110 | ||
1111 | e.key = argv[1]; | |
1112 | e.data = NULL; | |
1113 | hsearch_r(e, FIND, &ep, &env_htab, 0); | |
1114 | ||
1115 | return (ep == NULL) ? 1 : 0; | |
1116 | } | |
1117 | #endif | |
1118 | ||
ea882baf WD |
1119 | /* |
1120 | * New command line interface: "env" command with subcommands | |
1121 | */ | |
1122 | static cmd_tbl_t cmd_env_sub[] = { | |
1123 | #if defined(CONFIG_CMD_ASKENV) | |
1124 | U_BOOT_CMD_MKENT(ask, CONFIG_SYS_MAXARGS, 1, do_env_ask, "", ""), | |
1125 | #endif | |
1126 | U_BOOT_CMD_MKENT(default, 1, 0, do_env_default, "", ""), | |
9d8d661d | 1127 | U_BOOT_CMD_MKENT(delete, CONFIG_SYS_MAXARGS, 0, do_env_delete, "", ""), |
ea882baf WD |
1128 | #if defined(CONFIG_CMD_EDITENV) |
1129 | U_BOOT_CMD_MKENT(edit, 2, 0, do_env_edit, "", ""), | |
1130 | #endif | |
5e2b3e0c JH |
1131 | #if defined(CONFIG_CMD_ENV_CALLBACK) |
1132 | U_BOOT_CMD_MKENT(callbacks, 1, 0, do_env_callback, "", ""), | |
1133 | #endif | |
fffad71b JH |
1134 | #if defined(CONFIG_CMD_ENV_FLAGS) |
1135 | U_BOOT_CMD_MKENT(flags, 1, 0, do_env_flags, "", ""), | |
1136 | #endif | |
0c79cda0 | 1137 | #if defined(CONFIG_CMD_EXPORTENV) |
ea882baf | 1138 | U_BOOT_CMD_MKENT(export, 4, 0, do_env_export, "", ""), |
0c79cda0 | 1139 | #endif |
a000b795 KP |
1140 | #if defined(CONFIG_CMD_GREPENV) |
1141 | U_BOOT_CMD_MKENT(grep, CONFIG_SYS_MAXARGS, 1, do_env_grep, "", ""), | |
1142 | #endif | |
0c79cda0 | 1143 | #if defined(CONFIG_CMD_IMPORTENV) |
ea882baf | 1144 | U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""), |
0c79cda0 | 1145 | #endif |
ea882baf WD |
1146 | U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""), |
1147 | #if defined(CONFIG_CMD_RUN) | |
1148 | U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""), | |
1149 | #endif | |
1150 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) | |
1151 | U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""), | |
1152 | #endif | |
1153 | U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""), | |
88733e2c AR |
1154 | #if defined(CONFIG_CMD_ENV_EXISTS) |
1155 | U_BOOT_CMD_MKENT(exists, 2, 0, do_env_exists, "", ""), | |
1156 | #endif | |
ea882baf WD |
1157 | }; |
1158 | ||
2e5167cc | 1159 | #if defined(CONFIG_NEEDS_MANUAL_RELOC) |
60f7da1f HS |
1160 | void env_reloc(void) |
1161 | { | |
1162 | fixup_cmdtable(cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); | |
1163 | } | |
1164 | #endif | |
1165 | ||
f3c615b8 | 1166 | static int do_env(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
ea882baf WD |
1167 | { |
1168 | cmd_tbl_t *cp; | |
1169 | ||
5904da02 | 1170 | if (argc < 2) |
4c12eeb8 | 1171 | return CMD_RET_USAGE; |
5904da02 | 1172 | |
ea882baf WD |
1173 | /* drop initial "env" arg */ |
1174 | argc--; | |
1175 | argv++; | |
1176 | ||
1177 | cp = find_cmd_tbl(argv[0], cmd_env_sub, ARRAY_SIZE(cmd_env_sub)); | |
1178 | ||
1179 | if (cp) | |
1180 | return cp->cmd(cmdtp, flag, argc, argv); | |
1181 | ||
4c12eeb8 | 1182 | return CMD_RET_USAGE; |
ea882baf WD |
1183 | } |
1184 | ||
088f1b19 KP |
1185 | #ifdef CONFIG_SYS_LONGHELP |
1186 | static char env_help_text[] = | |
ea882baf WD |
1187 | #if defined(CONFIG_CMD_ASKENV) |
1188 | "ask name [message] [size] - ask for environment variable\nenv " | |
5e2b3e0c JH |
1189 | #endif |
1190 | #if defined(CONFIG_CMD_ENV_CALLBACK) | |
1191 | "callbacks - print callbacks and their associated variables\nenv " | |
ea882baf | 1192 | #endif |
b64b7c3d GF |
1193 | "default [-f] -a - [forcibly] reset default environment\n" |
1194 | "env default [-f] var [...] - [forcibly] reset variable(s) to their default values\n" | |
9d8d661d | 1195 | "env delete [-f] var [...] - [forcibly] delete variable(s)\n" |
ea882baf WD |
1196 | #if defined(CONFIG_CMD_EDITENV) |
1197 | "env edit name - edit environment variable\n" | |
1198 | #endif | |
88733e2c AR |
1199 | #if defined(CONFIG_CMD_ENV_EXISTS) |
1200 | "env exists name - tests for existence of variable\n" | |
1201 | #endif | |
4796bc4b | 1202 | #if defined(CONFIG_CMD_EXPORTENV) |
37f2fe74 | 1203 | "env export [-t | -b | -c] [-s size] addr [var ...] - export environment\n" |
4796bc4b | 1204 | #endif |
fffad71b JH |
1205 | #if defined(CONFIG_CMD_ENV_FLAGS) |
1206 | "env flags - print variables that have non-default flags\n" | |
1207 | #endif | |
a000b795 | 1208 | #if defined(CONFIG_CMD_GREPENV) |
be29df6a WD |
1209 | #ifdef CONFIG_REGEX |
1210 | "env grep [-e] [-n | -v | -b] string [...] - search environment\n" | |
1211 | #else | |
d87244d5 | 1212 | "env grep [-n | -v | -b] string [...] - search environment\n" |
a000b795 | 1213 | #endif |
be29df6a | 1214 | #endif |
4796bc4b | 1215 | #if defined(CONFIG_CMD_IMPORTENV) |
ecd1446f | 1216 | "env import [-d] [-t [-r] | -b | -c] addr [size] - import environment\n" |
4796bc4b | 1217 | #endif |
be11235a | 1218 | "env print [-a | name ...] - print environment\n" |
ea882baf WD |
1219 | #if defined(CONFIG_CMD_RUN) |
1220 | "env run var [...] - run commands in an environment variable\n" | |
1221 | #endif | |
d798a9b5 | 1222 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
ea882baf | 1223 | "env save - save environment\n" |
d798a9b5 | 1224 | #endif |
088f1b19 KP |
1225 | "env set [-f] name [arg ...]\n"; |
1226 | #endif | |
1227 | ||
1228 | U_BOOT_CMD( | |
1229 | env, CONFIG_SYS_MAXARGS, 1, do_env, | |
1230 | "environment handling commands", env_help_text | |
ea882baf WD |
1231 | ); |
1232 | ||
1233 | /* | |
1234 | * Old command line interface, kept for compatibility | |
1235 | */ | |
8bde7f77 | 1236 | |
246c6922 | 1237 | #if defined(CONFIG_CMD_EDITENV) |
722b061b | 1238 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1239 | editenv, 2, 0, do_env_edit, |
246c6922 PT |
1240 | "edit environment variable", |
1241 | "name\n" | |
722b061b MF |
1242 | " - edit environment variable 'name'", |
1243 | var_complete | |
246c6922 PT |
1244 | ); |
1245 | #endif | |
1246 | ||
722b061b | 1247 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1248 | printenv, CONFIG_SYS_MAXARGS, 1, do_env_print, |
2fb2604d | 1249 | "print environment variables", |
be11235a | 1250 | "[-a]\n - print [all] values of all environment variables\n" |
8bde7f77 | 1251 | "printenv name ...\n" |
722b061b MF |
1252 | " - print value of environment variable 'name'", |
1253 | var_complete | |
8bde7f77 WD |
1254 | ); |
1255 | ||
a000b795 KP |
1256 | #ifdef CONFIG_CMD_GREPENV |
1257 | U_BOOT_CMD_COMPLETE( | |
1258 | grepenv, CONFIG_SYS_MAXARGS, 0, do_env_grep, | |
1259 | "search environment variables", | |
be29df6a WD |
1260 | #ifdef CONFIG_REGEX |
1261 | "[-e] [-n | -v | -b] string ...\n" | |
1262 | #else | |
d87244d5 | 1263 | "[-n | -v | -b] string ...\n" |
be29df6a | 1264 | #endif |
d87244d5 | 1265 | " - list environment name=value pairs matching 'string'\n" |
be29df6a WD |
1266 | #ifdef CONFIG_REGEX |
1267 | " \"-e\": enable regular expressions;\n" | |
1268 | #endif | |
d87244d5 WD |
1269 | " \"-n\": search variable names; \"-v\": search values;\n" |
1270 | " \"-b\": search both names and values (default)", | |
a000b795 KP |
1271 | var_complete |
1272 | ); | |
1273 | #endif | |
1274 | ||
722b061b | 1275 | U_BOOT_CMD_COMPLETE( |
ea882baf | 1276 | setenv, CONFIG_SYS_MAXARGS, 0, do_env_set, |
2fb2604d | 1277 | "set environment variables", |
24ab5a19 JH |
1278 | "[-f] name value ...\n" |
1279 | " - [forcibly] set environment variable 'name' to 'value ...'\n" | |
1280 | "setenv [-f] name\n" | |
1281 | " - [forcibly] delete environment variable 'name'", | |
722b061b | 1282 | var_complete |
8bde7f77 WD |
1283 | ); |
1284 | ||
c76fe474 | 1285 | #if defined(CONFIG_CMD_ASKENV) |
8bde7f77 | 1286 | |
0d498393 | 1287 | U_BOOT_CMD( |
ea882baf | 1288 | askenv, CONFIG_SYS_MAXARGS, 1, do_env_ask, |
2fb2604d | 1289 | "get environment variables from stdin", |
8bde7f77 | 1290 | "name [message] [size]\n" |
7d85591d | 1291 | " - get environment variable 'name' from stdin (max 'size' chars)" |
8bde7f77 | 1292 | ); |
90253178 | 1293 | #endif |
8bde7f77 | 1294 | |
c76fe474 | 1295 | #if defined(CONFIG_CMD_RUN) |
722b061b | 1296 | U_BOOT_CMD_COMPLETE( |
6d0f6bcf | 1297 | run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d | 1298 | "run commands in an environment variable", |
8bde7f77 | 1299 | "var [...]\n" |
722b061b MF |
1300 | " - run the commands in the environment variable(s) 'var'", |
1301 | var_complete | |
8bde7f77 | 1302 | ); |
90253178 | 1303 | #endif |
7ac2fe2d | 1304 | #endif /* CONFIG_SPL_BUILD */ |