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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> | |
2a3cb020 | 45 | #include <watchdog.h> |
281e00a3 | 46 | #include <serial.h> |
a68d3ed0 WD |
47 | #include <linux/stddef.h> |
48 | #include <asm/byteorder.h> | |
c76fe474 | 49 | #if defined(CONFIG_CMD_NET) |
a68d3ed0 WD |
50 | #include <net.h> |
51 | #endif | |
52 | ||
d87080b7 WD |
53 | DECLARE_GLOBAL_DATA_PTR; |
54 | ||
75eb82ec | 55 | #if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ |
5a1aceb0 | 56 | !defined(CONFIG_ENV_IS_IN_FLASH) && \ |
057c849c | 57 | !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ |
75eb82ec | 58 | !defined(CONFIG_ENV_IS_IN_MG_DISK) && \ |
51bfee19 | 59 | !defined(CONFIG_ENV_IS_IN_NAND) && \ |
75eb82ec | 60 | !defined(CONFIG_ENV_IS_IN_NVRAM) && \ |
9656138f | 61 | !defined(CONFIG_ENV_IS_IN_ONENAND) && \ |
0b5099a8 | 62 | !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ |
93f6d725 | 63 | !defined(CONFIG_ENV_IS_NOWHERE) |
75eb82ec K |
64 | # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ |
65 | SPI_FLASH|MG_DISK|NVRAM|NOWHERE} | |
a68d3ed0 WD |
66 | #endif |
67 | ||
68 | #define XMK_STR(x) #x | |
69 | #define MK_STR(x) XMK_STR(x) | |
70 | ||
71 | /************************************************************************ | |
72 | ************************************************************************/ | |
73 | ||
a68d3ed0 WD |
74 | /* |
75 | * Table with supported baudrates (defined in config_xyz.h) | |
76 | */ | |
6d0f6bcf | 77 | static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE; |
a68d3ed0 WD |
78 | #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0])) |
79 | ||
da95427c HS |
80 | /* |
81 | * This variable is incremented on each do_setenv (), so it can | |
82 | * be used via get_env_id() as an indication, if the environment | |
83 | * has changed or not. So it is possible to reread an environment | |
84 | * variable only if the environment was changed ... done so for | |
85 | * example in NetInitLoop() | |
86 | */ | |
2f70c49e | 87 | static int env_id = 1; |
a68d3ed0 | 88 | |
2f70c49e HS |
89 | int get_env_id (void) |
90 | { | |
91 | return env_id; | |
92 | } | |
a68d3ed0 WD |
93 | /************************************************************************ |
94 | * Command interface: print one or all environment variables | |
95 | */ | |
96 | ||
97 | int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
98 | { | |
99 | int i, j, k, nxt; | |
100 | int rcode = 0; | |
101 | ||
102 | if (argc == 1) { /* Print all env variables */ | |
103 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { | |
104 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) | |
105 | ; | |
106 | for (k=i; k<nxt; ++k) | |
107 | putc(env_get_char(k)); | |
108 | putc ('\n'); | |
109 | ||
110 | if (ctrlc()) { | |
111 | puts ("\n ** Abort\n"); | |
112 | return 1; | |
113 | } | |
114 | } | |
115 | ||
d5996dd5 WD |
116 | printf("\nEnvironment size: %d/%ld bytes\n", |
117 | i, (ulong)ENV_SIZE); | |
a68d3ed0 WD |
118 | |
119 | return 0; | |
120 | } | |
121 | ||
122 | for (i=1; i<argc; ++i) { /* print single env variables */ | |
123 | char *name = argv[i]; | |
124 | ||
125 | k = -1; | |
126 | ||
127 | for (j=0; env_get_char(j) != '\0'; j=nxt+1) { | |
128 | ||
129 | for (nxt=j; env_get_char(nxt) != '\0'; ++nxt) | |
130 | ; | |
77ddac94 | 131 | k = envmatch((uchar *)name, j); |
a68d3ed0 WD |
132 | if (k < 0) { |
133 | continue; | |
134 | } | |
135 | puts (name); | |
136 | putc ('='); | |
137 | while (k < nxt) | |
138 | putc(env_get_char(k++)); | |
139 | putc ('\n'); | |
140 | break; | |
141 | } | |
142 | if (k < 0) { | |
143 | printf ("## Error: \"%s\" not defined\n", name); | |
144 | rcode ++; | |
145 | } | |
146 | } | |
147 | return rcode; | |
148 | } | |
149 | ||
150 | /************************************************************************ | |
151 | * Set a new environment variable, | |
152 | * or replace or delete an existing one. | |
153 | * | |
154 | * This function will ONLY work with a in-RAM copy of the environment | |
155 | */ | |
156 | ||
157 | int _do_setenv (int flag, int argc, char *argv[]) | |
158 | { | |
a68d3ed0 WD |
159 | int i, len, oldval; |
160 | int console = -1; | |
161 | uchar *env, *nxt = NULL; | |
77ddac94 | 162 | char *name; |
a68d3ed0 WD |
163 | bd_t *bd = gd->bd; |
164 | ||
165 | uchar *env_data = env_get_addr(0); | |
166 | ||
167 | if (!env_data) /* need copy in RAM */ | |
168 | return 1; | |
169 | ||
170 | name = argv[1]; | |
171 | ||
471a7be7 WD |
172 | if (strchr(name, '=')) { |
173 | printf ("## Error: illegal character '=' in variable name \"%s\"\n", name); | |
174 | return 1; | |
175 | } | |
176 | ||
2f70c49e | 177 | env_id++; |
a68d3ed0 WD |
178 | /* |
179 | * search if variable with this name already exists | |
180 | */ | |
181 | oldval = -1; | |
182 | for (env=env_data; *env; env=nxt+1) { | |
183 | for (nxt=env; *nxt; ++nxt) | |
184 | ; | |
77ddac94 | 185 | if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0) |
a68d3ed0 WD |
186 | break; |
187 | } | |
188 | ||
189 | /* | |
190 | * Delete any existing definition | |
191 | */ | |
192 | if (oldval >= 0) { | |
193 | #ifndef CONFIG_ENV_OVERWRITE | |
194 | ||
195 | /* | |
0587597c SR |
196 | * Ethernet Address and serial# can be set only once, |
197 | * ver is readonly. | |
a68d3ed0 | 198 | */ |
f6a69559 | 199 | if ( |
c74b2108 SK |
200 | #ifdef CONFIG_HAS_UID |
201 | /* Allow serial# forced overwrite with 0xdeaf4add flag */ | |
f6a69559 | 202 | ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) || |
c74b2108 | 203 | #else |
f6a69559 | 204 | (strcmp (name, "serial#") == 0) || |
c74b2108 | 205 | #endif |
a68d3ed0 WD |
206 | ((strcmp (name, "ethaddr") == 0) |
207 | #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) | |
77ddac94 | 208 | && (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0) |
a68d3ed0 WD |
209 | #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */ |
210 | ) ) { | |
211 | printf ("Can't overwrite \"%s\"\n", name); | |
212 | return 1; | |
213 | } | |
214 | #endif | |
215 | ||
216 | /* Check for console redirection */ | |
217 | if (strcmp(name,"stdin") == 0) { | |
218 | console = stdin; | |
219 | } else if (strcmp(name,"stdout") == 0) { | |
220 | console = stdout; | |
221 | } else if (strcmp(name,"stderr") == 0) { | |
222 | console = stderr; | |
223 | } | |
224 | ||
225 | if (console != -1) { | |
226 | if (argc < 3) { /* Cannot delete it! */ | |
227 | printf("Can't delete \"%s\"\n", name); | |
228 | return 1; | |
229 | } | |
230 | ||
16a28ef2 GJ |
231 | #ifdef CONFIG_CONSOLE_MUX |
232 | i = iomux_doenv(console, argv[2]); | |
233 | if (i) | |
234 | return i; | |
235 | #else | |
a68d3ed0 WD |
236 | /* Try assigning specified device */ |
237 | if (console_assign (console, argv[2]) < 0) | |
238 | return 1; | |
281e00a3 WD |
239 | |
240 | #ifdef CONFIG_SERIAL_MULTI | |
241 | if (serial_assign (argv[2]) < 0) | |
242 | return 1; | |
243 | #endif | |
16a28ef2 | 244 | #endif /* CONFIG_CONSOLE_MUX */ |
a68d3ed0 WD |
245 | } |
246 | ||
247 | /* | |
248 | * Switch to new baudrate if new baudrate is supported | |
249 | */ | |
250 | if (strcmp(argv[1],"baudrate") == 0) { | |
251 | int baudrate = simple_strtoul(argv[2], NULL, 10); | |
252 | int i; | |
253 | for (i=0; i<N_BAUDRATES; ++i) { | |
254 | if (baudrate == baudrate_table[i]) | |
255 | break; | |
256 | } | |
257 | if (i == N_BAUDRATES) { | |
258 | printf ("## Baudrate %d bps not supported\n", | |
259 | baudrate); | |
260 | return 1; | |
261 | } | |
262 | printf ("## Switch baudrate to %d bps and press ENTER ...\n", | |
263 | baudrate); | |
264 | udelay(50000); | |
265 | gd->baudrate = baudrate; | |
c84bad0e | 266 | #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2) |
d0fb80c3 WD |
267 | gd->bd->bi_baudrate = baudrate; |
268 | #endif | |
269 | ||
a68d3ed0 WD |
270 | serial_setbrg (); |
271 | udelay(50000); | |
272 | for (;;) { | |
273 | if (getc() == '\r') | |
274 | break; | |
275 | } | |
276 | } | |
277 | ||
278 | if (*++nxt == '\0') { | |
279 | if (env > env_data) { | |
280 | env--; | |
281 | } else { | |
282 | *env = '\0'; | |
283 | } | |
284 | } else { | |
285 | for (;;) { | |
286 | *env = *nxt++; | |
287 | if ((*env == '\0') && (*nxt == '\0')) | |
288 | break; | |
289 | ++env; | |
290 | } | |
291 | } | |
292 | *++env = '\0'; | |
293 | } | |
294 | ||
a68d3ed0 WD |
295 | /* Delete only ? */ |
296 | if ((argc < 3) || argv[2] == NULL) { | |
297 | env_crc_update (); | |
298 | return 0; | |
299 | } | |
300 | ||
301 | /* | |
302 | * Append new definition at the end | |
303 | */ | |
304 | for (env=env_data; *env || *(env+1); ++env) | |
305 | ; | |
306 | if (env > env_data) | |
307 | ++env; | |
308 | /* | |
309 | * Overflow when: | |
310 | * "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data) | |
311 | */ | |
312 | len = strlen(name) + 2; | |
313 | /* add '=' for first arg, ' ' for all others */ | |
314 | for (i=2; i<argc; ++i) { | |
315 | len += strlen(argv[i]) + 1; | |
316 | } | |
317 | if (len > (&env_data[ENV_SIZE]-env)) { | |
318 | printf ("## Error: environment overflow, \"%s\" deleted\n", name); | |
319 | return 1; | |
320 | } | |
321 | while ((*env = *name++) != '\0') | |
322 | env++; | |
323 | for (i=2; i<argc; ++i) { | |
324 | char *val = argv[i]; | |
325 | ||
326 | *env = (i==2) ? '=' : ' '; | |
327 | while ((*++env = *val++) != '\0') | |
328 | ; | |
329 | } | |
330 | ||
331 | /* end is marked with double '\0' */ | |
332 | *++env = '\0'; | |
333 | ||
334 | /* Update CRC */ | |
335 | env_crc_update (); | |
336 | ||
337 | /* | |
338 | * Some variables should be updated when the corresponding | |
339 | * entry in the enviornment is changed | |
340 | */ | |
341 | ||
56b555a6 | 342 | if (strcmp(argv[1],"ethaddr") == 0) |
a68d3ed0 | 343 | return 0; |
a68d3ed0 WD |
344 | |
345 | if (strcmp(argv[1],"ipaddr") == 0) { | |
346 | char *s = argv[2]; /* always use only one arg */ | |
347 | char *e; | |
348 | unsigned long addr; | |
349 | bd->bi_ip_addr = 0; | |
350 | for (addr=0, i=0; i<4; ++i) { | |
351 | ulong val = s ? simple_strtoul(s, &e, 10) : 0; | |
352 | addr <<= 8; | |
353 | addr |= (val & 0xFF); | |
354 | if (s) s = (*e) ? e+1 : e; | |
355 | } | |
356 | bd->bi_ip_addr = htonl(addr); | |
357 | return 0; | |
358 | } | |
359 | if (strcmp(argv[1],"loadaddr") == 0) { | |
360 | load_addr = simple_strtoul(argv[2], NULL, 16); | |
361 | return 0; | |
362 | } | |
c76fe474 | 363 | #if defined(CONFIG_CMD_NET) |
a68d3ed0 WD |
364 | if (strcmp(argv[1],"bootfile") == 0) { |
365 | copy_filename (BootFile, argv[2], sizeof(BootFile)); | |
366 | return 0; | |
367 | } | |
90253178 | 368 | #endif |
c7de829c | 369 | |
0587597c | 370 | #ifdef CONFIG_AMIGAONEG3SE |
c7de829c WD |
371 | if (strcmp(argv[1], "vga_fg_color") == 0 || |
372 | strcmp(argv[1], "vga_bg_color") == 0 ) { | |
373 | extern void video_set_color(unsigned char attr); | |
374 | extern unsigned char video_get_attr(void); | |
375 | ||
376 | video_set_color(video_get_attr()); | |
377 | return 0; | |
378 | } | |
379 | #endif /* CONFIG_AMIGAONEG3SE */ | |
380 | ||
a68d3ed0 WD |
381 | return 0; |
382 | } | |
383 | ||
75678c80 | 384 | int setenv (char *varname, char *varvalue) |
a68d3ed0 WD |
385 | { |
386 | char *argv[4] = { "setenv", varname, varvalue, NULL }; | |
9ffd451a | 387 | if (varvalue == NULL) |
75678c80 | 388 | return _do_setenv (0, 2, argv); |
9ffd451a | 389 | else |
75678c80 | 390 | return _do_setenv (0, 3, argv); |
a68d3ed0 WD |
391 | } |
392 | ||
c74b2108 SK |
393 | #ifdef CONFIG_HAS_UID |
394 | void forceenv (char *varname, char *varvalue) | |
395 | { | |
396 | char *argv[4] = { "forceenv", varname, varvalue, NULL }; | |
397 | _do_setenv (0xdeaf4add, 3, argv); | |
398 | } | |
399 | #endif | |
400 | ||
401 | int do_setenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
a68d3ed0 WD |
402 | { |
403 | if (argc < 2) { | |
62c3ae7c | 404 | cmd_usage(cmdtp); |
a68d3ed0 WD |
405 | return 1; |
406 | } | |
407 | ||
408 | return _do_setenv (flag, argc, argv); | |
409 | } | |
410 | ||
411 | /************************************************************************ | |
412 | * Prompt for environment variable | |
413 | */ | |
414 | ||
c76fe474 | 415 | #if defined(CONFIG_CMD_ASKENV) |
a68d3ed0 WD |
416 | int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
417 | { | |
6d0f6bcf JCPV |
418 | extern char console_buffer[CONFIG_SYS_CBSIZE]; |
419 | char message[CONFIG_SYS_CBSIZE]; | |
420 | int size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
421 | int len; |
422 | char *local_args[4]; | |
423 | ||
424 | local_args[0] = argv[0]; | |
425 | local_args[1] = argv[1]; | |
426 | local_args[2] = NULL; | |
427 | local_args[3] = NULL; | |
428 | ||
429 | if (argc < 2) { | |
62c3ae7c | 430 | cmd_usage(cmdtp); |
a68d3ed0 WD |
431 | return 1; |
432 | } | |
433 | /* Check the syntax */ | |
434 | switch (argc) { | |
435 | case 1: | |
62c3ae7c | 436 | cmd_usage(cmdtp); |
a68d3ed0 WD |
437 | return 1; |
438 | ||
439 | case 2: /* askenv envname */ | |
440 | sprintf (message, "Please enter '%s':", argv[1]); | |
441 | break; | |
442 | ||
443 | case 3: /* askenv envname size */ | |
444 | sprintf (message, "Please enter '%s':", argv[1]); | |
445 | size = simple_strtoul (argv[2], NULL, 10); | |
446 | break; | |
447 | ||
448 | default: /* askenv envname message1 ... messagen size */ | |
449 | { | |
450 | int i; | |
451 | int pos = 0; | |
452 | ||
453 | for (i = 2; i < argc - 1; i++) { | |
454 | if (pos) { | |
455 | message[pos++] = ' '; | |
456 | } | |
457 | strcpy (message+pos, argv[i]); | |
458 | pos += strlen(argv[i]); | |
459 | } | |
460 | message[pos] = '\0'; | |
461 | size = simple_strtoul (argv[argc - 1], NULL, 10); | |
462 | } | |
463 | break; | |
464 | } | |
465 | ||
6d0f6bcf JCPV |
466 | if (size >= CONFIG_SYS_CBSIZE) |
467 | size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
468 | |
469 | if (size <= 0) | |
470 | return 1; | |
471 | ||
472 | /* prompt for input */ | |
473 | len = readline (message); | |
474 | ||
475 | if (size < len) | |
476 | console_buffer[size] = '\0'; | |
477 | ||
478 | len = 2; | |
479 | if (console_buffer[0] != '\0') { | |
480 | local_args[2] = console_buffer; | |
481 | len = 3; | |
482 | } | |
483 | ||
484 | /* Continue calling setenv code */ | |
485 | return _do_setenv (flag, len, local_args); | |
486 | } | |
90253178 | 487 | #endif |
a68d3ed0 WD |
488 | |
489 | /************************************************************************ | |
490 | * Look up variable from environment, | |
491 | * return address of storage for that variable, | |
492 | * or NULL if not found | |
493 | */ | |
494 | ||
77ddac94 | 495 | char *getenv (char *name) |
a68d3ed0 WD |
496 | { |
497 | int i, nxt; | |
498 | ||
2a3cb020 WD |
499 | WATCHDOG_RESET(); |
500 | ||
a68d3ed0 WD |
501 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { |
502 | int val; | |
503 | ||
504 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { | |
0e8d1586 | 505 | if (nxt >= CONFIG_ENV_SIZE) { |
a68d3ed0 WD |
506 | return (NULL); |
507 | } | |
508 | } | |
77ddac94 | 509 | if ((val=envmatch((uchar *)name, i)) < 0) |
a68d3ed0 | 510 | continue; |
77ddac94 | 511 | return ((char *)env_get_addr(val)); |
a68d3ed0 WD |
512 | } |
513 | ||
514 | return (NULL); | |
515 | } | |
516 | ||
77ddac94 | 517 | int getenv_r (char *name, char *buf, unsigned len) |
a68d3ed0 WD |
518 | { |
519 | int i, nxt; | |
520 | ||
521 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { | |
522 | int val, n; | |
523 | ||
524 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { | |
0e8d1586 | 525 | if (nxt >= CONFIG_ENV_SIZE) { |
a68d3ed0 WD |
526 | return (-1); |
527 | } | |
528 | } | |
77ddac94 | 529 | if ((val=envmatch((uchar *)name, i)) < 0) |
a68d3ed0 WD |
530 | continue; |
531 | /* found; copy out */ | |
532 | n = 0; | |
533 | while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0') | |
534 | ; | |
535 | if (len == n) | |
536 | *buf = '\0'; | |
537 | return (n); | |
538 | } | |
539 | return (-1); | |
540 | } | |
541 | ||
bdab39d3 | 542 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
ba69dc26 | 543 | |
a68d3ed0 WD |
544 | int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
545 | { | |
546 | extern char * env_name_spec; | |
547 | ||
548 | printf ("Saving Environment to %s...\n", env_name_spec); | |
549 | ||
550 | return (saveenv() ? 1 : 0); | |
551 | } | |
8bde7f77 | 552 | |
ba69dc26 MF |
553 | U_BOOT_CMD( |
554 | saveenv, 1, 0, do_saveenv, | |
2fb2604d | 555 | "save environment variables to persistent storage", |
ba69dc26 MF |
556 | NULL |
557 | ); | |
558 | ||
a68d3ed0 WD |
559 | #endif |
560 | ||
561 | ||
562 | /************************************************************************ | |
563 | * Match a name / name=value pair | |
564 | * | |
565 | * s1 is either a simple 'name', or a 'name=value' pair. | |
566 | * i2 is the environment index for a 'name2=value2' pair. | |
567 | * If the names match, return the index for the value2, else NULL. | |
568 | */ | |
569 | ||
26a41790 | 570 | int envmatch (uchar *s1, int i2) |
a68d3ed0 WD |
571 | { |
572 | ||
573 | while (*s1 == env_get_char(i2++)) | |
574 | if (*s1++ == '=') | |
575 | return(i2); | |
576 | if (*s1 == '\0' && env_get_char(i2-1) == '=') | |
577 | return(i2); | |
578 | return(-1); | |
579 | } | |
8bde7f77 WD |
580 | |
581 | ||
582 | /**************************************************/ | |
583 | ||
0d498393 | 584 | U_BOOT_CMD( |
6d0f6bcf | 585 | printenv, CONFIG_SYS_MAXARGS, 1, do_printenv, |
2fb2604d | 586 | "print environment variables", |
8bde7f77 WD |
587 | "\n - print values of all environment variables\n" |
588 | "printenv name ...\n" | |
589 | " - print value of environment variable 'name'\n" | |
590 | ); | |
591 | ||
0d498393 | 592 | U_BOOT_CMD( |
6d0f6bcf | 593 | setenv, CONFIG_SYS_MAXARGS, 0, do_setenv, |
2fb2604d | 594 | "set environment variables", |
8bde7f77 WD |
595 | "name value ...\n" |
596 | " - set environment variable 'name' to 'value ...'\n" | |
597 | "setenv name\n" | |
598 | " - delete environment variable 'name'\n" | |
599 | ); | |
600 | ||
c76fe474 | 601 | #if defined(CONFIG_CMD_ASKENV) |
8bde7f77 | 602 | |
0d498393 | 603 | U_BOOT_CMD( |
6d0f6bcf | 604 | askenv, CONFIG_SYS_MAXARGS, 1, do_askenv, |
2fb2604d | 605 | "get environment variables from stdin", |
8bde7f77 WD |
606 | "name [message] [size]\n" |
607 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
608 | "askenv name\n" | |
609 | " - get environment variable 'name' from stdin\n" | |
610 | "askenv name size\n" | |
611 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
612 | "askenv name [message] size\n" | |
613 | " - display 'message' string and get environment variable 'name'" | |
614 | "from stdin (max 'size' chars)\n" | |
615 | ); | |
90253178 | 616 | #endif |
8bde7f77 | 617 | |
c76fe474 | 618 | #if defined(CONFIG_CMD_RUN) |
8bde7f77 | 619 | int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); |
0d498393 | 620 | U_BOOT_CMD( |
6d0f6bcf | 621 | run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d | 622 | "run commands in an environment variable", |
8bde7f77 WD |
623 | "var [...]\n" |
624 | " - run the commands in the environment variable(s) 'var'\n" | |
625 | ); | |
90253178 | 626 | #endif |