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a68d3ed0 WD |
1 | /* |
2 | * (C) Copyright 2000-2002 | |
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> | |
7 | ||
8 | * See file CREDITS for list of people who contributed to this | |
9 | * project. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License as | |
13 | * published by the Free Software Foundation; either version 2 of | |
14 | * the License, or (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
24 | * MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | /************************************************************************** | |
28 | * | |
29 | * Support for persistent environment data | |
30 | * | |
31 | * The "environment" is stored as a list of '\0' terminated | |
32 | * "name=value" strings. The end of the list is marked by a double | |
33 | * '\0'. New entries are always added at the end. Deleting an entry | |
34 | * shifts the remaining entries to the front. Replacing an entry is a | |
35 | * combination of deleting the old value and adding the new one. | |
36 | * | |
37 | * The environment is preceeded by a 32 bit CRC over the data part. | |
38 | * | |
39 | ************************************************************************** | |
40 | */ | |
41 | ||
42 | #include <common.h> | |
43 | #include <command.h> | |
44 | #include <environment.h> | |
246c6922 PT |
45 | #if defined(CONFIG_CMD_EDITENV) |
46 | #include <malloc.h> | |
47 | #endif | |
2a3cb020 | 48 | #include <watchdog.h> |
281e00a3 | 49 | #include <serial.h> |
a68d3ed0 WD |
50 | #include <linux/stddef.h> |
51 | #include <asm/byteorder.h> | |
c76fe474 | 52 | #if defined(CONFIG_CMD_NET) |
a68d3ed0 WD |
53 | #include <net.h> |
54 | #endif | |
55 | ||
d87080b7 WD |
56 | DECLARE_GLOBAL_DATA_PTR; |
57 | ||
75eb82ec | 58 | #if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ |
5a1aceb0 | 59 | !defined(CONFIG_ENV_IS_IN_FLASH) && \ |
057c849c | 60 | !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ |
75eb82ec | 61 | !defined(CONFIG_ENV_IS_IN_MG_DISK) && \ |
a8060359 | 62 | !defined(CONFIG_ENV_IS_IN_MMC) && \ |
51bfee19 | 63 | !defined(CONFIG_ENV_IS_IN_NAND) && \ |
75eb82ec | 64 | !defined(CONFIG_ENV_IS_IN_NVRAM) && \ |
9656138f | 65 | !defined(CONFIG_ENV_IS_IN_ONENAND) && \ |
0b5099a8 | 66 | !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ |
93f6d725 | 67 | !defined(CONFIG_ENV_IS_NOWHERE) |
75eb82ec | 68 | # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ |
a8060359 | 69 | SPI_FLASH|MG_DISK|NVRAM|MMC|NOWHERE} |
a68d3ed0 WD |
70 | #endif |
71 | ||
72 | #define XMK_STR(x) #x | |
73 | #define MK_STR(x) XMK_STR(x) | |
74 | ||
75 | /************************************************************************ | |
76 | ************************************************************************/ | |
77 | ||
a68d3ed0 WD |
78 | /* |
79 | * Table with supported baudrates (defined in config_xyz.h) | |
80 | */ | |
6d0f6bcf | 81 | static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE; |
a68d3ed0 WD |
82 | #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0])) |
83 | ||
da95427c HS |
84 | /* |
85 | * This variable is incremented on each do_setenv (), so it can | |
86 | * be used via get_env_id() as an indication, if the environment | |
87 | * has changed or not. So it is possible to reread an environment | |
88 | * variable only if the environment was changed ... done so for | |
89 | * example in NetInitLoop() | |
90 | */ | |
2f70c49e | 91 | static int env_id = 1; |
a68d3ed0 | 92 | |
2f70c49e HS |
93 | int get_env_id (void) |
94 | { | |
95 | return env_id; | |
96 | } | |
a68d3ed0 WD |
97 | /************************************************************************ |
98 | * Command interface: print one or all environment variables | |
99 | */ | |
100 | ||
4c94f6c5 MF |
101 | /* |
102 | * state 0: finish printing this string and return (matched!) | |
103 | * state 1: no matching to be done; print everything | |
104 | * state 2: continue searching for matched name | |
105 | */ | |
106 | static int printenv(char *name, int state) | |
a68d3ed0 | 107 | { |
4c94f6c5 MF |
108 | int i, j; |
109 | char c, buf[17]; | |
110 | ||
111 | i = 0; | |
112 | buf[16] = '\0'; | |
113 | ||
114 | while (state && env_get_char(i) != '\0') { | |
115 | if (state == 2 && envmatch((uchar *)name, i) >= 0) | |
116 | state = 0; | |
117 | ||
118 | j = 0; | |
119 | do { | |
120 | buf[j++] = c = env_get_char(i++); | |
121 | if (j == sizeof(buf) - 1) { | |
122 | if (state <= 1) | |
123 | puts(buf); | |
124 | j = 0; | |
a68d3ed0 | 125 | } |
4c94f6c5 | 126 | } while (c != '\0'); |
a68d3ed0 | 127 | |
4c94f6c5 MF |
128 | if (state <= 1) { |
129 | if (j) | |
130 | puts(buf); | |
131 | putc('\n'); | |
132 | } | |
a68d3ed0 | 133 | |
4c94f6c5 MF |
134 | if (ctrlc()) |
135 | return -1; | |
a68d3ed0 WD |
136 | } |
137 | ||
4c94f6c5 MF |
138 | if (state == 0) |
139 | i = 0; | |
140 | return i; | |
141 | } | |
a68d3ed0 | 142 | |
54841ab5 | 143 | int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
4c94f6c5 MF |
144 | { |
145 | int i; | |
146 | int rcode = 0; | |
a68d3ed0 | 147 | |
4c94f6c5 MF |
148 | if (argc == 1) { |
149 | /* print all env vars */ | |
150 | rcode = printenv(NULL, 1); | |
151 | if (rcode < 0) | |
152 | return 1; | |
153 | printf("\nEnvironment size: %d/%ld bytes\n", | |
154 | rcode, (ulong)ENV_SIZE); | |
155 | return 0; | |
156 | } | |
a68d3ed0 | 157 | |
4c94f6c5 MF |
158 | /* print selected env vars */ |
159 | for (i = 1; i < argc; ++i) { | |
160 | char *name = argv[i]; | |
161 | if (printenv(name, 2)) { | |
162 | printf("## Error: \"%s\" not defined\n", name); | |
163 | ++rcode; | |
a68d3ed0 WD |
164 | } |
165 | } | |
4c94f6c5 | 166 | |
a68d3ed0 WD |
167 | return rcode; |
168 | } | |
169 | ||
170 | /************************************************************************ | |
171 | * Set a new environment variable, | |
172 | * or replace or delete an existing one. | |
173 | * | |
174 | * This function will ONLY work with a in-RAM copy of the environment | |
175 | */ | |
176 | ||
54841ab5 | 177 | int _do_setenv (int flag, int argc, char * const argv[]) |
a68d3ed0 | 178 | { |
a68d3ed0 WD |
179 | int i, len, oldval; |
180 | int console = -1; | |
181 | uchar *env, *nxt = NULL; | |
77ddac94 | 182 | char *name; |
a68d3ed0 WD |
183 | bd_t *bd = gd->bd; |
184 | ||
185 | uchar *env_data = env_get_addr(0); | |
186 | ||
187 | if (!env_data) /* need copy in RAM */ | |
188 | return 1; | |
189 | ||
190 | name = argv[1]; | |
191 | ||
471a7be7 WD |
192 | if (strchr(name, '=')) { |
193 | printf ("## Error: illegal character '=' in variable name \"%s\"\n", name); | |
194 | return 1; | |
195 | } | |
196 | ||
2f70c49e | 197 | env_id++; |
a68d3ed0 WD |
198 | /* |
199 | * search if variable with this name already exists | |
200 | */ | |
201 | oldval = -1; | |
202 | for (env=env_data; *env; env=nxt+1) { | |
203 | for (nxt=env; *nxt; ++nxt) | |
204 | ; | |
77ddac94 | 205 | if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0) |
a68d3ed0 WD |
206 | break; |
207 | } | |
208 | ||
9c5586aa AR |
209 | /* Check for console redirection */ |
210 | if (strcmp(name,"stdin") == 0) { | |
211 | console = stdin; | |
212 | } else if (strcmp(name,"stdout") == 0) { | |
213 | console = stdout; | |
214 | } else if (strcmp(name,"stderr") == 0) { | |
215 | console = stderr; | |
216 | } | |
217 | ||
218 | if (console != -1) { | |
219 | if (argc < 3) { /* Cannot delete it! */ | |
220 | printf("Can't delete \"%s\"\n", name); | |
221 | return 1; | |
222 | } | |
223 | ||
224 | #ifdef CONFIG_CONSOLE_MUX | |
225 | i = iomux_doenv(console, argv[2]); | |
226 | if (i) | |
227 | return i; | |
228 | #else | |
229 | /* Try assigning specified device */ | |
230 | if (console_assign (console, argv[2]) < 0) | |
231 | return 1; | |
232 | ||
233 | #ifdef CONFIG_SERIAL_MULTI | |
234 | if (serial_assign (argv[2]) < 0) | |
235 | return 1; | |
236 | #endif | |
237 | #endif /* CONFIG_CONSOLE_MUX */ | |
238 | } | |
239 | ||
a68d3ed0 WD |
240 | /* |
241 | * Delete any existing definition | |
242 | */ | |
243 | if (oldval >= 0) { | |
244 | #ifndef CONFIG_ENV_OVERWRITE | |
245 | ||
246 | /* | |
0587597c SR |
247 | * Ethernet Address and serial# can be set only once, |
248 | * ver is readonly. | |
a68d3ed0 | 249 | */ |
f6a69559 | 250 | if ( |
f6a69559 | 251 | (strcmp (name, "serial#") == 0) || |
a68d3ed0 WD |
252 | ((strcmp (name, "ethaddr") == 0) |
253 | #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) | |
77ddac94 | 254 | && (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0) |
a68d3ed0 WD |
255 | #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */ |
256 | ) ) { | |
257 | printf ("Can't overwrite \"%s\"\n", name); | |
258 | return 1; | |
259 | } | |
260 | #endif | |
261 | ||
a68d3ed0 WD |
262 | /* |
263 | * Switch to new baudrate if new baudrate is supported | |
264 | */ | |
265 | if (strcmp(argv[1],"baudrate") == 0) { | |
266 | int baudrate = simple_strtoul(argv[2], NULL, 10); | |
267 | int i; | |
268 | for (i=0; i<N_BAUDRATES; ++i) { | |
269 | if (baudrate == baudrate_table[i]) | |
270 | break; | |
271 | } | |
272 | if (i == N_BAUDRATES) { | |
273 | printf ("## Baudrate %d bps not supported\n", | |
274 | baudrate); | |
275 | return 1; | |
276 | } | |
277 | printf ("## Switch baudrate to %d bps and press ENTER ...\n", | |
278 | baudrate); | |
279 | udelay(50000); | |
280 | gd->baudrate = baudrate; | |
c84bad0e | 281 | #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2) |
d0fb80c3 WD |
282 | gd->bd->bi_baudrate = baudrate; |
283 | #endif | |
284 | ||
a68d3ed0 WD |
285 | serial_setbrg (); |
286 | udelay(50000); | |
287 | for (;;) { | |
288 | if (getc() == '\r') | |
289 | break; | |
290 | } | |
291 | } | |
292 | ||
293 | if (*++nxt == '\0') { | |
294 | if (env > env_data) { | |
295 | env--; | |
296 | } else { | |
297 | *env = '\0'; | |
298 | } | |
299 | } else { | |
300 | for (;;) { | |
301 | *env = *nxt++; | |
302 | if ((*env == '\0') && (*nxt == '\0')) | |
303 | break; | |
304 | ++env; | |
305 | } | |
306 | } | |
307 | *++env = '\0'; | |
308 | } | |
309 | ||
a68d3ed0 WD |
310 | /* Delete only ? */ |
311 | if ((argc < 3) || argv[2] == NULL) { | |
312 | env_crc_update (); | |
313 | return 0; | |
314 | } | |
315 | ||
316 | /* | |
317 | * Append new definition at the end | |
318 | */ | |
319 | for (env=env_data; *env || *(env+1); ++env) | |
320 | ; | |
321 | if (env > env_data) | |
322 | ++env; | |
323 | /* | |
324 | * Overflow when: | |
325 | * "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data) | |
326 | */ | |
327 | len = strlen(name) + 2; | |
328 | /* add '=' for first arg, ' ' for all others */ | |
329 | for (i=2; i<argc; ++i) { | |
330 | len += strlen(argv[i]) + 1; | |
331 | } | |
332 | if (len > (&env_data[ENV_SIZE]-env)) { | |
333 | printf ("## Error: environment overflow, \"%s\" deleted\n", name); | |
334 | return 1; | |
335 | } | |
336 | while ((*env = *name++) != '\0') | |
337 | env++; | |
338 | for (i=2; i<argc; ++i) { | |
339 | char *val = argv[i]; | |
340 | ||
341 | *env = (i==2) ? '=' : ' '; | |
342 | while ((*++env = *val++) != '\0') | |
343 | ; | |
344 | } | |
345 | ||
346 | /* end is marked with double '\0' */ | |
347 | *++env = '\0'; | |
348 | ||
349 | /* Update CRC */ | |
350 | env_crc_update (); | |
351 | ||
352 | /* | |
353 | * Some variables should be updated when the corresponding | |
354 | * entry in the enviornment is changed | |
355 | */ | |
356 | ||
56b555a6 | 357 | if (strcmp(argv[1],"ethaddr") == 0) |
a68d3ed0 | 358 | return 0; |
a68d3ed0 WD |
359 | |
360 | if (strcmp(argv[1],"ipaddr") == 0) { | |
361 | char *s = argv[2]; /* always use only one arg */ | |
362 | char *e; | |
363 | unsigned long addr; | |
364 | bd->bi_ip_addr = 0; | |
365 | for (addr=0, i=0; i<4; ++i) { | |
366 | ulong val = s ? simple_strtoul(s, &e, 10) : 0; | |
367 | addr <<= 8; | |
368 | addr |= (val & 0xFF); | |
369 | if (s) s = (*e) ? e+1 : e; | |
370 | } | |
371 | bd->bi_ip_addr = htonl(addr); | |
372 | return 0; | |
373 | } | |
374 | if (strcmp(argv[1],"loadaddr") == 0) { | |
375 | load_addr = simple_strtoul(argv[2], NULL, 16); | |
376 | return 0; | |
377 | } | |
c76fe474 | 378 | #if defined(CONFIG_CMD_NET) |
a68d3ed0 WD |
379 | if (strcmp(argv[1],"bootfile") == 0) { |
380 | copy_filename (BootFile, argv[2], sizeof(BootFile)); | |
381 | return 0; | |
382 | } | |
90253178 | 383 | #endif |
a68d3ed0 WD |
384 | return 0; |
385 | } | |
386 | ||
75678c80 | 387 | int setenv (char *varname, char *varvalue) |
a68d3ed0 | 388 | { |
54841ab5 | 389 | char * const argv[4] = { "setenv", varname, varvalue, NULL }; |
b0fa8e50 | 390 | if ((varvalue == NULL) || (varvalue[0] == '\0')) |
75678c80 | 391 | return _do_setenv (0, 2, argv); |
9ffd451a | 392 | else |
75678c80 | 393 | return _do_setenv (0, 3, argv); |
a68d3ed0 WD |
394 | } |
395 | ||
54841ab5 | 396 | int do_setenv (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 397 | { |
47e26b1b WD |
398 | if (argc < 2) |
399 | return cmd_usage(cmdtp); | |
a68d3ed0 WD |
400 | |
401 | return _do_setenv (flag, argc, argv); | |
402 | } | |
403 | ||
404 | /************************************************************************ | |
405 | * Prompt for environment variable | |
406 | */ | |
407 | ||
c76fe474 | 408 | #if defined(CONFIG_CMD_ASKENV) |
54841ab5 | 409 | int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 | 410 | { |
6d0f6bcf JCPV |
411 | extern char console_buffer[CONFIG_SYS_CBSIZE]; |
412 | char message[CONFIG_SYS_CBSIZE]; | |
413 | int size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
414 | int len; |
415 | char *local_args[4]; | |
416 | ||
417 | local_args[0] = argv[0]; | |
418 | local_args[1] = argv[1]; | |
419 | local_args[2] = NULL; | |
420 | local_args[3] = NULL; | |
421 | ||
47e26b1b WD |
422 | if (argc < 2) |
423 | return cmd_usage(cmdtp); | |
424 | ||
a68d3ed0 WD |
425 | /* Check the syntax */ |
426 | switch (argc) { | |
427 | case 1: | |
47e26b1b | 428 | return cmd_usage(cmdtp); |
a68d3ed0 WD |
429 | |
430 | case 2: /* askenv envname */ | |
431 | sprintf (message, "Please enter '%s':", argv[1]); | |
432 | break; | |
433 | ||
434 | case 3: /* askenv envname size */ | |
435 | sprintf (message, "Please enter '%s':", argv[1]); | |
436 | size = simple_strtoul (argv[2], NULL, 10); | |
437 | break; | |
438 | ||
439 | default: /* askenv envname message1 ... messagen size */ | |
440 | { | |
441 | int i; | |
442 | int pos = 0; | |
443 | ||
444 | for (i = 2; i < argc - 1; i++) { | |
445 | if (pos) { | |
446 | message[pos++] = ' '; | |
447 | } | |
448 | strcpy (message+pos, argv[i]); | |
449 | pos += strlen(argv[i]); | |
450 | } | |
451 | message[pos] = '\0'; | |
452 | size = simple_strtoul (argv[argc - 1], NULL, 10); | |
453 | } | |
454 | break; | |
455 | } | |
456 | ||
6d0f6bcf JCPV |
457 | if (size >= CONFIG_SYS_CBSIZE) |
458 | size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
459 | |
460 | if (size <= 0) | |
461 | return 1; | |
462 | ||
463 | /* prompt for input */ | |
464 | len = readline (message); | |
465 | ||
466 | if (size < len) | |
467 | console_buffer[size] = '\0'; | |
468 | ||
469 | len = 2; | |
470 | if (console_buffer[0] != '\0') { | |
471 | local_args[2] = console_buffer; | |
472 | len = 3; | |
473 | } | |
474 | ||
475 | /* Continue calling setenv code */ | |
476 | return _do_setenv (flag, len, local_args); | |
477 | } | |
90253178 | 478 | #endif |
a68d3ed0 | 479 | |
246c6922 PT |
480 | /************************************************************************ |
481 | * Interactively edit an environment variable | |
482 | */ | |
483 | #if defined(CONFIG_CMD_EDITENV) | |
54841ab5 | 484 | int do_editenv(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
246c6922 PT |
485 | { |
486 | char buffer[CONFIG_SYS_CBSIZE]; | |
487 | char *init_val; | |
488 | int len; | |
489 | ||
47e26b1b WD |
490 | if (argc < 2) |
491 | return cmd_usage(cmdtp); | |
246c6922 PT |
492 | |
493 | /* Set read buffer to initial value or empty sting */ | |
494 | init_val = getenv(argv[1]); | |
495 | if (init_val) | |
496 | len = sprintf(buffer, "%s", init_val); | |
497 | else | |
498 | buffer[0] = '\0'; | |
499 | ||
500 | readline_into_buffer("edit: ", buffer); | |
501 | ||
502 | return setenv(argv[1], buffer); | |
503 | } | |
504 | #endif /* CONFIG_CMD_EDITENV */ | |
505 | ||
a68d3ed0 WD |
506 | /************************************************************************ |
507 | * Look up variable from environment, | |
508 | * return address of storage for that variable, | |
509 | * or NULL if not found | |
510 | */ | |
511 | ||
77ddac94 | 512 | char *getenv (char *name) |
a68d3ed0 | 513 | { |
91a76751 WD |
514 | if (gd->flags & GD_FLG_RELOC) { /* full C runtime after reloc */ |
515 | int i, nxt; | |
a68d3ed0 | 516 | |
91a76751 | 517 | WATCHDOG_RESET(); |
2a3cb020 | 518 | |
91a76751 WD |
519 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { |
520 | int val; | |
a68d3ed0 | 521 | |
91a76751 WD |
522 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { |
523 | if (nxt >= CONFIG_ENV_SIZE) { | |
524 | return (NULL); | |
525 | } | |
a68d3ed0 | 526 | } |
91a76751 WD |
527 | if ((val=envmatch((uchar *)name, i)) < 0) |
528 | continue; | |
529 | return ((char *)env_get_addr(val)); | |
a68d3ed0 | 530 | } |
91a76751 WD |
531 | |
532 | return (NULL); | |
a68d3ed0 WD |
533 | } |
534 | ||
91a76751 WD |
535 | /* restricted C runtime before reloc */ |
536 | ||
537 | return ((getenv_f(name,gd->env_buf,sizeof(gd->env_buf)) > 0) ? | |
538 | gd->env_buf : NULL); | |
a68d3ed0 WD |
539 | } |
540 | ||
cdb74977 | 541 | int getenv_f(char *name, char *buf, unsigned len) |
a68d3ed0 WD |
542 | { |
543 | int i, nxt; | |
544 | ||
545 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { | |
546 | int val, n; | |
547 | ||
548 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { | |
0e8d1586 | 549 | if (nxt >= CONFIG_ENV_SIZE) { |
a68d3ed0 WD |
550 | return (-1); |
551 | } | |
552 | } | |
77ddac94 | 553 | if ((val=envmatch((uchar *)name, i)) < 0) |
a68d3ed0 | 554 | continue; |
9ed4a958 | 555 | |
a68d3ed0 | 556 | /* found; copy out */ |
9ed4a958 WD |
557 | for (n=0; n<len; ++n, ++buf) { |
558 | if ((*buf = env_get_char(val++)) == '\0') | |
559 | return n; | |
560 | } | |
561 | ||
562 | if (n) | |
563 | *--buf = '\0'; | |
564 | ||
565 | printf("env_buf too small [%d]\n", len); | |
566 | ||
567 | return n; | |
a68d3ed0 WD |
568 | } |
569 | return (-1); | |
570 | } | |
571 | ||
bdab39d3 | 572 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
ba69dc26 | 573 | |
54841ab5 | 574 | int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
a68d3ed0 WD |
575 | { |
576 | extern char * env_name_spec; | |
577 | ||
578 | printf ("Saving Environment to %s...\n", env_name_spec); | |
579 | ||
580 | return (saveenv() ? 1 : 0); | |
581 | } | |
8bde7f77 | 582 | |
ba69dc26 MF |
583 | U_BOOT_CMD( |
584 | saveenv, 1, 0, do_saveenv, | |
2fb2604d | 585 | "save environment variables to persistent storage", |
a89c33db | 586 | "" |
ba69dc26 MF |
587 | ); |
588 | ||
a68d3ed0 WD |
589 | #endif |
590 | ||
591 | ||
592 | /************************************************************************ | |
593 | * Match a name / name=value pair | |
594 | * | |
595 | * s1 is either a simple 'name', or a 'name=value' pair. | |
596 | * i2 is the environment index for a 'name2=value2' pair. | |
597 | * If the names match, return the index for the value2, else NULL. | |
598 | */ | |
599 | ||
26a41790 | 600 | int envmatch (uchar *s1, int i2) |
a68d3ed0 WD |
601 | { |
602 | ||
603 | while (*s1 == env_get_char(i2++)) | |
604 | if (*s1++ == '=') | |
605 | return(i2); | |
606 | if (*s1 == '\0' && env_get_char(i2-1) == '=') | |
607 | return(i2); | |
608 | return(-1); | |
609 | } | |
8bde7f77 WD |
610 | |
611 | ||
612 | /**************************************************/ | |
613 | ||
246c6922 PT |
614 | #if defined(CONFIG_CMD_EDITENV) |
615 | U_BOOT_CMD( | |
616 | editenv, 2, 0, do_editenv, | |
617 | "edit environment variable", | |
618 | "name\n" | |
619 | " - edit environment variable 'name'" | |
620 | ); | |
621 | #endif | |
622 | ||
0d498393 | 623 | U_BOOT_CMD( |
6d0f6bcf | 624 | printenv, CONFIG_SYS_MAXARGS, 1, do_printenv, |
2fb2604d | 625 | "print environment variables", |
8bde7f77 WD |
626 | "\n - print values of all environment variables\n" |
627 | "printenv name ...\n" | |
a89c33db | 628 | " - print value of environment variable 'name'" |
8bde7f77 WD |
629 | ); |
630 | ||
0d498393 | 631 | U_BOOT_CMD( |
6d0f6bcf | 632 | setenv, CONFIG_SYS_MAXARGS, 0, do_setenv, |
2fb2604d | 633 | "set environment variables", |
8bde7f77 WD |
634 | "name value ...\n" |
635 | " - set environment variable 'name' to 'value ...'\n" | |
636 | "setenv name\n" | |
a89c33db | 637 | " - delete environment variable 'name'" |
8bde7f77 WD |
638 | ); |
639 | ||
c76fe474 | 640 | #if defined(CONFIG_CMD_ASKENV) |
8bde7f77 | 641 | |
0d498393 | 642 | U_BOOT_CMD( |
6d0f6bcf | 643 | askenv, CONFIG_SYS_MAXARGS, 1, do_askenv, |
2fb2604d | 644 | "get environment variables from stdin", |
8bde7f77 WD |
645 | "name [message] [size]\n" |
646 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
647 | "askenv name\n" | |
648 | " - get environment variable 'name' from stdin\n" | |
649 | "askenv name size\n" | |
650 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
651 | "askenv name [message] size\n" | |
652 | " - display 'message' string and get environment variable 'name'" | |
a89c33db | 653 | "from stdin (max 'size' chars)" |
8bde7f77 | 654 | ); |
90253178 | 655 | #endif |
8bde7f77 | 656 | |
c76fe474 | 657 | #if defined(CONFIG_CMD_RUN) |
54841ab5 | 658 | int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]); |
0d498393 | 659 | U_BOOT_CMD( |
6d0f6bcf | 660 | run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d | 661 | "run commands in an environment variable", |
8bde7f77 | 662 | "var [...]\n" |
a89c33db | 663 | " - run the commands in the environment variable(s) 'var'" |
8bde7f77 | 664 | ); |
90253178 | 665 | #endif |