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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 | ||
9314cee6 | 55 | #if !defined(CONFIG_ENV_IS_IN_NVRAM) && \ |
bb1f8b4f | 56 | !defined(CONFIG_ENV_IS_IN_EEPROM) && \ |
5a1aceb0 | 57 | !defined(CONFIG_ENV_IS_IN_FLASH) && \ |
057c849c | 58 | !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ |
51bfee19 | 59 | !defined(CONFIG_ENV_IS_IN_NAND) && \ |
9656138f | 60 | !defined(CONFIG_ENV_IS_IN_ONENAND) && \ |
0b5099a8 | 61 | !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ |
93f6d725 | 62 | !defined(CONFIG_ENV_IS_NOWHERE) |
1ede7871 | 63 | # error Define one of CONFIG_ENV_IS_IN_{NVRAM|EEPROM|FLASH|DATAFLASH|ONENAND|SPI_FLASH|NOWHERE} |
a68d3ed0 WD |
64 | #endif |
65 | ||
66 | #define XMK_STR(x) #x | |
67 | #define MK_STR(x) XMK_STR(x) | |
68 | ||
69 | /************************************************************************ | |
70 | ************************************************************************/ | |
71 | ||
a68d3ed0 WD |
72 | /* |
73 | * Table with supported baudrates (defined in config_xyz.h) | |
74 | */ | |
6d0f6bcf | 75 | static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE; |
a68d3ed0 WD |
76 | #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0])) |
77 | ||
78 | ||
79 | /************************************************************************ | |
80 | * Command interface: print one or all environment variables | |
81 | */ | |
82 | ||
83 | int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
84 | { | |
85 | int i, j, k, nxt; | |
86 | int rcode = 0; | |
87 | ||
88 | if (argc == 1) { /* Print all env variables */ | |
89 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { | |
90 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) | |
91 | ; | |
92 | for (k=i; k<nxt; ++k) | |
93 | putc(env_get_char(k)); | |
94 | putc ('\n'); | |
95 | ||
96 | if (ctrlc()) { | |
97 | puts ("\n ** Abort\n"); | |
98 | return 1; | |
99 | } | |
100 | } | |
101 | ||
d5996dd5 WD |
102 | printf("\nEnvironment size: %d/%ld bytes\n", |
103 | i, (ulong)ENV_SIZE); | |
a68d3ed0 WD |
104 | |
105 | return 0; | |
106 | } | |
107 | ||
108 | for (i=1; i<argc; ++i) { /* print single env variables */ | |
109 | char *name = argv[i]; | |
110 | ||
111 | k = -1; | |
112 | ||
113 | for (j=0; env_get_char(j) != '\0'; j=nxt+1) { | |
114 | ||
115 | for (nxt=j; env_get_char(nxt) != '\0'; ++nxt) | |
116 | ; | |
77ddac94 | 117 | k = envmatch((uchar *)name, j); |
a68d3ed0 WD |
118 | if (k < 0) { |
119 | continue; | |
120 | } | |
121 | puts (name); | |
122 | putc ('='); | |
123 | while (k < nxt) | |
124 | putc(env_get_char(k++)); | |
125 | putc ('\n'); | |
126 | break; | |
127 | } | |
128 | if (k < 0) { | |
129 | printf ("## Error: \"%s\" not defined\n", name); | |
130 | rcode ++; | |
131 | } | |
132 | } | |
133 | return rcode; | |
134 | } | |
135 | ||
136 | /************************************************************************ | |
137 | * Set a new environment variable, | |
138 | * or replace or delete an existing one. | |
139 | * | |
140 | * This function will ONLY work with a in-RAM copy of the environment | |
141 | */ | |
142 | ||
143 | int _do_setenv (int flag, int argc, char *argv[]) | |
144 | { | |
a68d3ed0 WD |
145 | int i, len, oldval; |
146 | int console = -1; | |
147 | uchar *env, *nxt = NULL; | |
77ddac94 | 148 | char *name; |
a68d3ed0 WD |
149 | bd_t *bd = gd->bd; |
150 | ||
151 | uchar *env_data = env_get_addr(0); | |
152 | ||
153 | if (!env_data) /* need copy in RAM */ | |
154 | return 1; | |
155 | ||
156 | name = argv[1]; | |
157 | ||
471a7be7 WD |
158 | if (strchr(name, '=')) { |
159 | printf ("## Error: illegal character '=' in variable name \"%s\"\n", name); | |
160 | return 1; | |
161 | } | |
162 | ||
a68d3ed0 WD |
163 | /* |
164 | * search if variable with this name already exists | |
165 | */ | |
166 | oldval = -1; | |
167 | for (env=env_data; *env; env=nxt+1) { | |
168 | for (nxt=env; *nxt; ++nxt) | |
169 | ; | |
77ddac94 | 170 | if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0) |
a68d3ed0 WD |
171 | break; |
172 | } | |
173 | ||
174 | /* | |
175 | * Delete any existing definition | |
176 | */ | |
177 | if (oldval >= 0) { | |
178 | #ifndef CONFIG_ENV_OVERWRITE | |
179 | ||
180 | /* | |
0587597c SR |
181 | * Ethernet Address and serial# can be set only once, |
182 | * ver is readonly. | |
a68d3ed0 | 183 | */ |
f6a69559 | 184 | if ( |
c74b2108 SK |
185 | #ifdef CONFIG_HAS_UID |
186 | /* Allow serial# forced overwrite with 0xdeaf4add flag */ | |
f6a69559 | 187 | ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) || |
c74b2108 | 188 | #else |
f6a69559 | 189 | (strcmp (name, "serial#") == 0) || |
c74b2108 | 190 | #endif |
a68d3ed0 WD |
191 | ((strcmp (name, "ethaddr") == 0) |
192 | #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) | |
77ddac94 | 193 | && (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0) |
a68d3ed0 WD |
194 | #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */ |
195 | ) ) { | |
196 | printf ("Can't overwrite \"%s\"\n", name); | |
197 | return 1; | |
198 | } | |
199 | #endif | |
200 | ||
201 | /* Check for console redirection */ | |
202 | if (strcmp(name,"stdin") == 0) { | |
203 | console = stdin; | |
204 | } else if (strcmp(name,"stdout") == 0) { | |
205 | console = stdout; | |
206 | } else if (strcmp(name,"stderr") == 0) { | |
207 | console = stderr; | |
208 | } | |
209 | ||
210 | if (console != -1) { | |
211 | if (argc < 3) { /* Cannot delete it! */ | |
212 | printf("Can't delete \"%s\"\n", name); | |
213 | return 1; | |
214 | } | |
215 | ||
16a28ef2 GJ |
216 | #ifdef CONFIG_CONSOLE_MUX |
217 | i = iomux_doenv(console, argv[2]); | |
218 | if (i) | |
219 | return i; | |
220 | #else | |
a68d3ed0 WD |
221 | /* Try assigning specified device */ |
222 | if (console_assign (console, argv[2]) < 0) | |
223 | return 1; | |
281e00a3 WD |
224 | |
225 | #ifdef CONFIG_SERIAL_MULTI | |
226 | if (serial_assign (argv[2]) < 0) | |
227 | return 1; | |
228 | #endif | |
16a28ef2 | 229 | #endif /* CONFIG_CONSOLE_MUX */ |
a68d3ed0 WD |
230 | } |
231 | ||
232 | /* | |
233 | * Switch to new baudrate if new baudrate is supported | |
234 | */ | |
235 | if (strcmp(argv[1],"baudrate") == 0) { | |
236 | int baudrate = simple_strtoul(argv[2], NULL, 10); | |
237 | int i; | |
238 | for (i=0; i<N_BAUDRATES; ++i) { | |
239 | if (baudrate == baudrate_table[i]) | |
240 | break; | |
241 | } | |
242 | if (i == N_BAUDRATES) { | |
243 | printf ("## Baudrate %d bps not supported\n", | |
244 | baudrate); | |
245 | return 1; | |
246 | } | |
247 | printf ("## Switch baudrate to %d bps and press ENTER ...\n", | |
248 | baudrate); | |
249 | udelay(50000); | |
250 | gd->baudrate = baudrate; | |
c84bad0e | 251 | #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2) |
d0fb80c3 WD |
252 | gd->bd->bi_baudrate = baudrate; |
253 | #endif | |
254 | ||
a68d3ed0 WD |
255 | serial_setbrg (); |
256 | udelay(50000); | |
257 | for (;;) { | |
258 | if (getc() == '\r') | |
259 | break; | |
260 | } | |
261 | } | |
262 | ||
263 | if (*++nxt == '\0') { | |
264 | if (env > env_data) { | |
265 | env--; | |
266 | } else { | |
267 | *env = '\0'; | |
268 | } | |
269 | } else { | |
270 | for (;;) { | |
271 | *env = *nxt++; | |
272 | if ((*env == '\0') && (*nxt == '\0')) | |
273 | break; | |
274 | ++env; | |
275 | } | |
276 | } | |
277 | *++env = '\0'; | |
278 | } | |
279 | ||
280 | #ifdef CONFIG_NET_MULTI | |
281 | if (strncmp(name, "eth", 3) == 0) { | |
282 | char *end; | |
283 | int num = simple_strtoul(name+3, &end, 10); | |
284 | ||
285 | if (strcmp(end, "addr") == 0) { | |
286 | eth_set_enetaddr(num, argv[2]); | |
287 | } | |
288 | } | |
289 | #endif | |
290 | ||
291 | ||
292 | /* Delete only ? */ | |
293 | if ((argc < 3) || argv[2] == NULL) { | |
294 | env_crc_update (); | |
295 | return 0; | |
296 | } | |
297 | ||
298 | /* | |
299 | * Append new definition at the end | |
300 | */ | |
301 | for (env=env_data; *env || *(env+1); ++env) | |
302 | ; | |
303 | if (env > env_data) | |
304 | ++env; | |
305 | /* | |
306 | * Overflow when: | |
307 | * "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data) | |
308 | */ | |
309 | len = strlen(name) + 2; | |
310 | /* add '=' for first arg, ' ' for all others */ | |
311 | for (i=2; i<argc; ++i) { | |
312 | len += strlen(argv[i]) + 1; | |
313 | } | |
314 | if (len > (&env_data[ENV_SIZE]-env)) { | |
315 | printf ("## Error: environment overflow, \"%s\" deleted\n", name); | |
316 | return 1; | |
317 | } | |
318 | while ((*env = *name++) != '\0') | |
319 | env++; | |
320 | for (i=2; i<argc; ++i) { | |
321 | char *val = argv[i]; | |
322 | ||
323 | *env = (i==2) ? '=' : ' '; | |
324 | while ((*++env = *val++) != '\0') | |
325 | ; | |
326 | } | |
327 | ||
328 | /* end is marked with double '\0' */ | |
329 | *++env = '\0'; | |
330 | ||
331 | /* Update CRC */ | |
332 | env_crc_update (); | |
333 | ||
334 | /* | |
335 | * Some variables should be updated when the corresponding | |
336 | * entry in the enviornment is changed | |
337 | */ | |
338 | ||
339 | if (strcmp(argv[1],"ethaddr") == 0) { | |
340 | char *s = argv[2]; /* always use only one arg */ | |
341 | char *e; | |
342 | for (i=0; i<6; ++i) { | |
343 | bd->bi_enetaddr[i] = s ? simple_strtoul(s, &e, 16) : 0; | |
344 | if (s) s = (*e) ? e+1 : e; | |
345 | } | |
346 | #ifdef CONFIG_NET_MULTI | |
347 | eth_set_enetaddr(0, argv[2]); | |
348 | #endif | |
349 | return 0; | |
350 | } | |
351 | ||
352 | if (strcmp(argv[1],"ipaddr") == 0) { | |
353 | char *s = argv[2]; /* always use only one arg */ | |
354 | char *e; | |
355 | unsigned long addr; | |
356 | bd->bi_ip_addr = 0; | |
357 | for (addr=0, i=0; i<4; ++i) { | |
358 | ulong val = s ? simple_strtoul(s, &e, 10) : 0; | |
359 | addr <<= 8; | |
360 | addr |= (val & 0xFF); | |
361 | if (s) s = (*e) ? e+1 : e; | |
362 | } | |
363 | bd->bi_ip_addr = htonl(addr); | |
364 | return 0; | |
365 | } | |
366 | if (strcmp(argv[1],"loadaddr") == 0) { | |
367 | load_addr = simple_strtoul(argv[2], NULL, 16); | |
368 | return 0; | |
369 | } | |
c76fe474 | 370 | #if defined(CONFIG_CMD_NET) |
a68d3ed0 WD |
371 | if (strcmp(argv[1],"bootfile") == 0) { |
372 | copy_filename (BootFile, argv[2], sizeof(BootFile)); | |
373 | return 0; | |
374 | } | |
90253178 | 375 | #endif |
c7de829c | 376 | |
0587597c | 377 | #ifdef CONFIG_AMIGAONEG3SE |
c7de829c WD |
378 | if (strcmp(argv[1], "vga_fg_color") == 0 || |
379 | strcmp(argv[1], "vga_bg_color") == 0 ) { | |
380 | extern void video_set_color(unsigned char attr); | |
381 | extern unsigned char video_get_attr(void); | |
382 | ||
383 | video_set_color(video_get_attr()); | |
384 | return 0; | |
385 | } | |
386 | #endif /* CONFIG_AMIGAONEG3SE */ | |
387 | ||
a68d3ed0 WD |
388 | return 0; |
389 | } | |
390 | ||
75678c80 | 391 | int setenv (char *varname, char *varvalue) |
a68d3ed0 WD |
392 | { |
393 | char *argv[4] = { "setenv", varname, varvalue, NULL }; | |
9ffd451a | 394 | if (varvalue == NULL) |
75678c80 | 395 | return _do_setenv (0, 2, argv); |
9ffd451a | 396 | else |
75678c80 | 397 | return _do_setenv (0, 3, argv); |
a68d3ed0 WD |
398 | } |
399 | ||
c74b2108 SK |
400 | #ifdef CONFIG_HAS_UID |
401 | void forceenv (char *varname, char *varvalue) | |
402 | { | |
403 | char *argv[4] = { "forceenv", varname, varvalue, NULL }; | |
404 | _do_setenv (0xdeaf4add, 3, argv); | |
405 | } | |
406 | #endif | |
407 | ||
408 | int do_setenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
a68d3ed0 WD |
409 | { |
410 | if (argc < 2) { | |
62c3ae7c | 411 | cmd_usage(cmdtp); |
a68d3ed0 WD |
412 | return 1; |
413 | } | |
414 | ||
415 | return _do_setenv (flag, argc, argv); | |
416 | } | |
417 | ||
418 | /************************************************************************ | |
419 | * Prompt for environment variable | |
420 | */ | |
421 | ||
c76fe474 | 422 | #if defined(CONFIG_CMD_ASKENV) |
a68d3ed0 WD |
423 | int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
424 | { | |
6d0f6bcf JCPV |
425 | extern char console_buffer[CONFIG_SYS_CBSIZE]; |
426 | char message[CONFIG_SYS_CBSIZE]; | |
427 | int size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
428 | int len; |
429 | char *local_args[4]; | |
430 | ||
431 | local_args[0] = argv[0]; | |
432 | local_args[1] = argv[1]; | |
433 | local_args[2] = NULL; | |
434 | local_args[3] = NULL; | |
435 | ||
436 | if (argc < 2) { | |
62c3ae7c | 437 | cmd_usage(cmdtp); |
a68d3ed0 WD |
438 | return 1; |
439 | } | |
440 | /* Check the syntax */ | |
441 | switch (argc) { | |
442 | case 1: | |
62c3ae7c | 443 | cmd_usage(cmdtp); |
a68d3ed0 WD |
444 | return 1; |
445 | ||
446 | case 2: /* askenv envname */ | |
447 | sprintf (message, "Please enter '%s':", argv[1]); | |
448 | break; | |
449 | ||
450 | case 3: /* askenv envname size */ | |
451 | sprintf (message, "Please enter '%s':", argv[1]); | |
452 | size = simple_strtoul (argv[2], NULL, 10); | |
453 | break; | |
454 | ||
455 | default: /* askenv envname message1 ... messagen size */ | |
456 | { | |
457 | int i; | |
458 | int pos = 0; | |
459 | ||
460 | for (i = 2; i < argc - 1; i++) { | |
461 | if (pos) { | |
462 | message[pos++] = ' '; | |
463 | } | |
464 | strcpy (message+pos, argv[i]); | |
465 | pos += strlen(argv[i]); | |
466 | } | |
467 | message[pos] = '\0'; | |
468 | size = simple_strtoul (argv[argc - 1], NULL, 10); | |
469 | } | |
470 | break; | |
471 | } | |
472 | ||
6d0f6bcf JCPV |
473 | if (size >= CONFIG_SYS_CBSIZE) |
474 | size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
475 | |
476 | if (size <= 0) | |
477 | return 1; | |
478 | ||
479 | /* prompt for input */ | |
480 | len = readline (message); | |
481 | ||
482 | if (size < len) | |
483 | console_buffer[size] = '\0'; | |
484 | ||
485 | len = 2; | |
486 | if (console_buffer[0] != '\0') { | |
487 | local_args[2] = console_buffer; | |
488 | len = 3; | |
489 | } | |
490 | ||
491 | /* Continue calling setenv code */ | |
492 | return _do_setenv (flag, len, local_args); | |
493 | } | |
90253178 | 494 | #endif |
a68d3ed0 WD |
495 | |
496 | /************************************************************************ | |
497 | * Look up variable from environment, | |
498 | * return address of storage for that variable, | |
499 | * or NULL if not found | |
500 | */ | |
501 | ||
77ddac94 | 502 | char *getenv (char *name) |
a68d3ed0 WD |
503 | { |
504 | int i, nxt; | |
505 | ||
2a3cb020 WD |
506 | WATCHDOG_RESET(); |
507 | ||
a68d3ed0 WD |
508 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { |
509 | int val; | |
510 | ||
511 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { | |
0e8d1586 | 512 | if (nxt >= CONFIG_ENV_SIZE) { |
a68d3ed0 WD |
513 | return (NULL); |
514 | } | |
515 | } | |
77ddac94 | 516 | if ((val=envmatch((uchar *)name, i)) < 0) |
a68d3ed0 | 517 | continue; |
77ddac94 | 518 | return ((char *)env_get_addr(val)); |
a68d3ed0 WD |
519 | } |
520 | ||
521 | return (NULL); | |
522 | } | |
523 | ||
77ddac94 | 524 | int getenv_r (char *name, char *buf, unsigned len) |
a68d3ed0 WD |
525 | { |
526 | int i, nxt; | |
527 | ||
528 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { | |
529 | int val, n; | |
530 | ||
531 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { | |
0e8d1586 | 532 | if (nxt >= CONFIG_ENV_SIZE) { |
a68d3ed0 WD |
533 | return (-1); |
534 | } | |
535 | } | |
77ddac94 | 536 | if ((val=envmatch((uchar *)name, i)) < 0) |
a68d3ed0 WD |
537 | continue; |
538 | /* found; copy out */ | |
539 | n = 0; | |
540 | while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0') | |
541 | ; | |
542 | if (len == n) | |
543 | *buf = '\0'; | |
544 | return (n); | |
545 | } | |
546 | return (-1); | |
547 | } | |
548 | ||
ba69dc26 MF |
549 | #if defined(CONFIG_CMD_ENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
550 | ||
a68d3ed0 WD |
551 | int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
552 | { | |
553 | extern char * env_name_spec; | |
554 | ||
555 | printf ("Saving Environment to %s...\n", env_name_spec); | |
556 | ||
557 | return (saveenv() ? 1 : 0); | |
558 | } | |
8bde7f77 | 559 | |
ba69dc26 MF |
560 | U_BOOT_CMD( |
561 | saveenv, 1, 0, do_saveenv, | |
2fb2604d | 562 | "save environment variables to persistent storage", |
ba69dc26 MF |
563 | NULL |
564 | ); | |
565 | ||
a68d3ed0 WD |
566 | #endif |
567 | ||
568 | ||
569 | /************************************************************************ | |
570 | * Match a name / name=value pair | |
571 | * | |
572 | * s1 is either a simple 'name', or a 'name=value' pair. | |
573 | * i2 is the environment index for a 'name2=value2' pair. | |
574 | * If the names match, return the index for the value2, else NULL. | |
575 | */ | |
576 | ||
26a41790 | 577 | int envmatch (uchar *s1, int i2) |
a68d3ed0 WD |
578 | { |
579 | ||
580 | while (*s1 == env_get_char(i2++)) | |
581 | if (*s1++ == '=') | |
582 | return(i2); | |
583 | if (*s1 == '\0' && env_get_char(i2-1) == '=') | |
584 | return(i2); | |
585 | return(-1); | |
586 | } | |
8bde7f77 WD |
587 | |
588 | ||
589 | /**************************************************/ | |
590 | ||
0d498393 | 591 | U_BOOT_CMD( |
6d0f6bcf | 592 | printenv, CONFIG_SYS_MAXARGS, 1, do_printenv, |
2fb2604d | 593 | "print environment variables", |
8bde7f77 WD |
594 | "\n - print values of all environment variables\n" |
595 | "printenv name ...\n" | |
596 | " - print value of environment variable 'name'\n" | |
597 | ); | |
598 | ||
0d498393 | 599 | U_BOOT_CMD( |
6d0f6bcf | 600 | setenv, CONFIG_SYS_MAXARGS, 0, do_setenv, |
2fb2604d | 601 | "set environment variables", |
8bde7f77 WD |
602 | "name value ...\n" |
603 | " - set environment variable 'name' to 'value ...'\n" | |
604 | "setenv name\n" | |
605 | " - delete environment variable 'name'\n" | |
606 | ); | |
607 | ||
c76fe474 | 608 | #if defined(CONFIG_CMD_ASKENV) |
8bde7f77 | 609 | |
0d498393 | 610 | U_BOOT_CMD( |
6d0f6bcf | 611 | askenv, CONFIG_SYS_MAXARGS, 1, do_askenv, |
2fb2604d | 612 | "get environment variables from stdin", |
8bde7f77 WD |
613 | "name [message] [size]\n" |
614 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
615 | "askenv name\n" | |
616 | " - get environment variable 'name' from stdin\n" | |
617 | "askenv name size\n" | |
618 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
619 | "askenv name [message] size\n" | |
620 | " - display 'message' string and get environment variable 'name'" | |
621 | "from stdin (max 'size' chars)\n" | |
622 | ); | |
90253178 | 623 | #endif |
8bde7f77 | 624 | |
c76fe474 | 625 | #if defined(CONFIG_CMD_RUN) |
8bde7f77 | 626 | int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); |
0d498393 | 627 | U_BOOT_CMD( |
6d0f6bcf | 628 | run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d | 629 | "run commands in an environment variable", |
8bde7f77 WD |
630 | "var [...]\n" |
631 | " - run the commands in the environment variable(s) 'var'\n" | |
632 | ); | |
90253178 | 633 | #endif |