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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 | ||
4c94f6c5 MF |
97 | /* |
98 | * state 0: finish printing this string and return (matched!) | |
99 | * state 1: no matching to be done; print everything | |
100 | * state 2: continue searching for matched name | |
101 | */ | |
102 | static int printenv(char *name, int state) | |
a68d3ed0 | 103 | { |
4c94f6c5 MF |
104 | int i, j; |
105 | char c, buf[17]; | |
106 | ||
107 | i = 0; | |
108 | buf[16] = '\0'; | |
109 | ||
110 | while (state && env_get_char(i) != '\0') { | |
111 | if (state == 2 && envmatch((uchar *)name, i) >= 0) | |
112 | state = 0; | |
113 | ||
114 | j = 0; | |
115 | do { | |
116 | buf[j++] = c = env_get_char(i++); | |
117 | if (j == sizeof(buf) - 1) { | |
118 | if (state <= 1) | |
119 | puts(buf); | |
120 | j = 0; | |
a68d3ed0 | 121 | } |
4c94f6c5 | 122 | } while (c != '\0'); |
a68d3ed0 | 123 | |
4c94f6c5 MF |
124 | if (state <= 1) { |
125 | if (j) | |
126 | puts(buf); | |
127 | putc('\n'); | |
128 | } | |
a68d3ed0 | 129 | |
4c94f6c5 MF |
130 | if (ctrlc()) |
131 | return -1; | |
a68d3ed0 WD |
132 | } |
133 | ||
4c94f6c5 MF |
134 | if (state == 0) |
135 | i = 0; | |
136 | return i; | |
137 | } | |
a68d3ed0 | 138 | |
4c94f6c5 MF |
139 | int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
140 | { | |
141 | int i; | |
142 | int rcode = 0; | |
a68d3ed0 | 143 | |
4c94f6c5 MF |
144 | if (argc == 1) { |
145 | /* print all env vars */ | |
146 | rcode = printenv(NULL, 1); | |
147 | if (rcode < 0) | |
148 | return 1; | |
149 | printf("\nEnvironment size: %d/%ld bytes\n", | |
150 | rcode, (ulong)ENV_SIZE); | |
151 | return 0; | |
152 | } | |
a68d3ed0 | 153 | |
4c94f6c5 MF |
154 | /* print selected env vars */ |
155 | for (i = 1; i < argc; ++i) { | |
156 | char *name = argv[i]; | |
157 | if (printenv(name, 2)) { | |
158 | printf("## Error: \"%s\" not defined\n", name); | |
159 | ++rcode; | |
a68d3ed0 WD |
160 | } |
161 | } | |
4c94f6c5 | 162 | |
a68d3ed0 WD |
163 | return rcode; |
164 | } | |
165 | ||
166 | /************************************************************************ | |
167 | * Set a new environment variable, | |
168 | * or replace or delete an existing one. | |
169 | * | |
170 | * This function will ONLY work with a in-RAM copy of the environment | |
171 | */ | |
172 | ||
173 | int _do_setenv (int flag, int argc, char *argv[]) | |
174 | { | |
a68d3ed0 WD |
175 | int i, len, oldval; |
176 | int console = -1; | |
177 | uchar *env, *nxt = NULL; | |
77ddac94 | 178 | char *name; |
a68d3ed0 WD |
179 | bd_t *bd = gd->bd; |
180 | ||
181 | uchar *env_data = env_get_addr(0); | |
182 | ||
183 | if (!env_data) /* need copy in RAM */ | |
184 | return 1; | |
185 | ||
186 | name = argv[1]; | |
187 | ||
471a7be7 WD |
188 | if (strchr(name, '=')) { |
189 | printf ("## Error: illegal character '=' in variable name \"%s\"\n", name); | |
190 | return 1; | |
191 | } | |
192 | ||
2f70c49e | 193 | env_id++; |
a68d3ed0 WD |
194 | /* |
195 | * search if variable with this name already exists | |
196 | */ | |
197 | oldval = -1; | |
198 | for (env=env_data; *env; env=nxt+1) { | |
199 | for (nxt=env; *nxt; ++nxt) | |
200 | ; | |
77ddac94 | 201 | if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0) |
a68d3ed0 WD |
202 | break; |
203 | } | |
204 | ||
205 | /* | |
206 | * Delete any existing definition | |
207 | */ | |
208 | if (oldval >= 0) { | |
209 | #ifndef CONFIG_ENV_OVERWRITE | |
210 | ||
211 | /* | |
0587597c SR |
212 | * Ethernet Address and serial# can be set only once, |
213 | * ver is readonly. | |
a68d3ed0 | 214 | */ |
f6a69559 | 215 | if ( |
c74b2108 SK |
216 | #ifdef CONFIG_HAS_UID |
217 | /* Allow serial# forced overwrite with 0xdeaf4add flag */ | |
f6a69559 | 218 | ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) || |
c74b2108 | 219 | #else |
f6a69559 | 220 | (strcmp (name, "serial#") == 0) || |
c74b2108 | 221 | #endif |
a68d3ed0 WD |
222 | ((strcmp (name, "ethaddr") == 0) |
223 | #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) | |
77ddac94 | 224 | && (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0) |
a68d3ed0 WD |
225 | #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */ |
226 | ) ) { | |
227 | printf ("Can't overwrite \"%s\"\n", name); | |
228 | return 1; | |
229 | } | |
230 | #endif | |
231 | ||
232 | /* Check for console redirection */ | |
233 | if (strcmp(name,"stdin") == 0) { | |
234 | console = stdin; | |
235 | } else if (strcmp(name,"stdout") == 0) { | |
236 | console = stdout; | |
237 | } else if (strcmp(name,"stderr") == 0) { | |
238 | console = stderr; | |
239 | } | |
240 | ||
241 | if (console != -1) { | |
242 | if (argc < 3) { /* Cannot delete it! */ | |
243 | printf("Can't delete \"%s\"\n", name); | |
244 | return 1; | |
245 | } | |
246 | ||
16a28ef2 GJ |
247 | #ifdef CONFIG_CONSOLE_MUX |
248 | i = iomux_doenv(console, argv[2]); | |
249 | if (i) | |
250 | return i; | |
251 | #else | |
a68d3ed0 WD |
252 | /* Try assigning specified device */ |
253 | if (console_assign (console, argv[2]) < 0) | |
254 | return 1; | |
281e00a3 WD |
255 | |
256 | #ifdef CONFIG_SERIAL_MULTI | |
257 | if (serial_assign (argv[2]) < 0) | |
258 | return 1; | |
259 | #endif | |
16a28ef2 | 260 | #endif /* CONFIG_CONSOLE_MUX */ |
a68d3ed0 WD |
261 | } |
262 | ||
263 | /* | |
264 | * Switch to new baudrate if new baudrate is supported | |
265 | */ | |
266 | if (strcmp(argv[1],"baudrate") == 0) { | |
267 | int baudrate = simple_strtoul(argv[2], NULL, 10); | |
268 | int i; | |
269 | for (i=0; i<N_BAUDRATES; ++i) { | |
270 | if (baudrate == baudrate_table[i]) | |
271 | break; | |
272 | } | |
273 | if (i == N_BAUDRATES) { | |
274 | printf ("## Baudrate %d bps not supported\n", | |
275 | baudrate); | |
276 | return 1; | |
277 | } | |
278 | printf ("## Switch baudrate to %d bps and press ENTER ...\n", | |
279 | baudrate); | |
280 | udelay(50000); | |
281 | gd->baudrate = baudrate; | |
c84bad0e | 282 | #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2) |
d0fb80c3 WD |
283 | gd->bd->bi_baudrate = baudrate; |
284 | #endif | |
285 | ||
a68d3ed0 WD |
286 | serial_setbrg (); |
287 | udelay(50000); | |
288 | for (;;) { | |
289 | if (getc() == '\r') | |
290 | break; | |
291 | } | |
292 | } | |
293 | ||
294 | if (*++nxt == '\0') { | |
295 | if (env > env_data) { | |
296 | env--; | |
297 | } else { | |
298 | *env = '\0'; | |
299 | } | |
300 | } else { | |
301 | for (;;) { | |
302 | *env = *nxt++; | |
303 | if ((*env == '\0') && (*nxt == '\0')) | |
304 | break; | |
305 | ++env; | |
306 | } | |
307 | } | |
308 | *++env = '\0'; | |
309 | } | |
310 | ||
a68d3ed0 WD |
311 | /* Delete only ? */ |
312 | if ((argc < 3) || argv[2] == NULL) { | |
313 | env_crc_update (); | |
314 | return 0; | |
315 | } | |
316 | ||
317 | /* | |
318 | * Append new definition at the end | |
319 | */ | |
320 | for (env=env_data; *env || *(env+1); ++env) | |
321 | ; | |
322 | if (env > env_data) | |
323 | ++env; | |
324 | /* | |
325 | * Overflow when: | |
326 | * "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data) | |
327 | */ | |
328 | len = strlen(name) + 2; | |
329 | /* add '=' for first arg, ' ' for all others */ | |
330 | for (i=2; i<argc; ++i) { | |
331 | len += strlen(argv[i]) + 1; | |
332 | } | |
333 | if (len > (&env_data[ENV_SIZE]-env)) { | |
334 | printf ("## Error: environment overflow, \"%s\" deleted\n", name); | |
335 | return 1; | |
336 | } | |
337 | while ((*env = *name++) != '\0') | |
338 | env++; | |
339 | for (i=2; i<argc; ++i) { | |
340 | char *val = argv[i]; | |
341 | ||
342 | *env = (i==2) ? '=' : ' '; | |
343 | while ((*++env = *val++) != '\0') | |
344 | ; | |
345 | } | |
346 | ||
347 | /* end is marked with double '\0' */ | |
348 | *++env = '\0'; | |
349 | ||
350 | /* Update CRC */ | |
351 | env_crc_update (); | |
352 | ||
353 | /* | |
354 | * Some variables should be updated when the corresponding | |
355 | * entry in the enviornment is changed | |
356 | */ | |
357 | ||
56b555a6 | 358 | if (strcmp(argv[1],"ethaddr") == 0) |
a68d3ed0 | 359 | return 0; |
a68d3ed0 WD |
360 | |
361 | if (strcmp(argv[1],"ipaddr") == 0) { | |
362 | char *s = argv[2]; /* always use only one arg */ | |
363 | char *e; | |
364 | unsigned long addr; | |
365 | bd->bi_ip_addr = 0; | |
366 | for (addr=0, i=0; i<4; ++i) { | |
367 | ulong val = s ? simple_strtoul(s, &e, 10) : 0; | |
368 | addr <<= 8; | |
369 | addr |= (val & 0xFF); | |
370 | if (s) s = (*e) ? e+1 : e; | |
371 | } | |
372 | bd->bi_ip_addr = htonl(addr); | |
373 | return 0; | |
374 | } | |
375 | if (strcmp(argv[1],"loadaddr") == 0) { | |
376 | load_addr = simple_strtoul(argv[2], NULL, 16); | |
377 | return 0; | |
378 | } | |
c76fe474 | 379 | #if defined(CONFIG_CMD_NET) |
a68d3ed0 WD |
380 | if (strcmp(argv[1],"bootfile") == 0) { |
381 | copy_filename (BootFile, argv[2], sizeof(BootFile)); | |
382 | return 0; | |
383 | } | |
90253178 | 384 | #endif |
c7de829c | 385 | |
0587597c | 386 | #ifdef CONFIG_AMIGAONEG3SE |
c7de829c WD |
387 | if (strcmp(argv[1], "vga_fg_color") == 0 || |
388 | strcmp(argv[1], "vga_bg_color") == 0 ) { | |
389 | extern void video_set_color(unsigned char attr); | |
390 | extern unsigned char video_get_attr(void); | |
391 | ||
392 | video_set_color(video_get_attr()); | |
393 | return 0; | |
394 | } | |
395 | #endif /* CONFIG_AMIGAONEG3SE */ | |
396 | ||
a68d3ed0 WD |
397 | return 0; |
398 | } | |
399 | ||
75678c80 | 400 | int setenv (char *varname, char *varvalue) |
a68d3ed0 WD |
401 | { |
402 | char *argv[4] = { "setenv", varname, varvalue, NULL }; | |
9ffd451a | 403 | if (varvalue == NULL) |
75678c80 | 404 | return _do_setenv (0, 2, argv); |
9ffd451a | 405 | else |
75678c80 | 406 | return _do_setenv (0, 3, argv); |
a68d3ed0 WD |
407 | } |
408 | ||
c74b2108 SK |
409 | #ifdef CONFIG_HAS_UID |
410 | void forceenv (char *varname, char *varvalue) | |
411 | { | |
412 | char *argv[4] = { "forceenv", varname, varvalue, NULL }; | |
413 | _do_setenv (0xdeaf4add, 3, argv); | |
414 | } | |
415 | #endif | |
416 | ||
417 | int do_setenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
a68d3ed0 WD |
418 | { |
419 | if (argc < 2) { | |
62c3ae7c | 420 | cmd_usage(cmdtp); |
a68d3ed0 WD |
421 | return 1; |
422 | } | |
423 | ||
424 | return _do_setenv (flag, argc, argv); | |
425 | } | |
426 | ||
427 | /************************************************************************ | |
428 | * Prompt for environment variable | |
429 | */ | |
430 | ||
c76fe474 | 431 | #if defined(CONFIG_CMD_ASKENV) |
a68d3ed0 WD |
432 | int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
433 | { | |
6d0f6bcf JCPV |
434 | extern char console_buffer[CONFIG_SYS_CBSIZE]; |
435 | char message[CONFIG_SYS_CBSIZE]; | |
436 | int size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
437 | int len; |
438 | char *local_args[4]; | |
439 | ||
440 | local_args[0] = argv[0]; | |
441 | local_args[1] = argv[1]; | |
442 | local_args[2] = NULL; | |
443 | local_args[3] = NULL; | |
444 | ||
445 | if (argc < 2) { | |
62c3ae7c | 446 | cmd_usage(cmdtp); |
a68d3ed0 WD |
447 | return 1; |
448 | } | |
449 | /* Check the syntax */ | |
450 | switch (argc) { | |
451 | case 1: | |
62c3ae7c | 452 | cmd_usage(cmdtp); |
a68d3ed0 WD |
453 | return 1; |
454 | ||
455 | case 2: /* askenv envname */ | |
456 | sprintf (message, "Please enter '%s':", argv[1]); | |
457 | break; | |
458 | ||
459 | case 3: /* askenv envname size */ | |
460 | sprintf (message, "Please enter '%s':", argv[1]); | |
461 | size = simple_strtoul (argv[2], NULL, 10); | |
462 | break; | |
463 | ||
464 | default: /* askenv envname message1 ... messagen size */ | |
465 | { | |
466 | int i; | |
467 | int pos = 0; | |
468 | ||
469 | for (i = 2; i < argc - 1; i++) { | |
470 | if (pos) { | |
471 | message[pos++] = ' '; | |
472 | } | |
473 | strcpy (message+pos, argv[i]); | |
474 | pos += strlen(argv[i]); | |
475 | } | |
476 | message[pos] = '\0'; | |
477 | size = simple_strtoul (argv[argc - 1], NULL, 10); | |
478 | } | |
479 | break; | |
480 | } | |
481 | ||
6d0f6bcf JCPV |
482 | if (size >= CONFIG_SYS_CBSIZE) |
483 | size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
484 | |
485 | if (size <= 0) | |
486 | return 1; | |
487 | ||
488 | /* prompt for input */ | |
489 | len = readline (message); | |
490 | ||
491 | if (size < len) | |
492 | console_buffer[size] = '\0'; | |
493 | ||
494 | len = 2; | |
495 | if (console_buffer[0] != '\0') { | |
496 | local_args[2] = console_buffer; | |
497 | len = 3; | |
498 | } | |
499 | ||
500 | /* Continue calling setenv code */ | |
501 | return _do_setenv (flag, len, local_args); | |
502 | } | |
90253178 | 503 | #endif |
a68d3ed0 WD |
504 | |
505 | /************************************************************************ | |
506 | * Look up variable from environment, | |
507 | * return address of storage for that variable, | |
508 | * or NULL if not found | |
509 | */ | |
510 | ||
77ddac94 | 511 | char *getenv (char *name) |
a68d3ed0 WD |
512 | { |
513 | int i, nxt; | |
514 | ||
2a3cb020 WD |
515 | WATCHDOG_RESET(); |
516 | ||
a68d3ed0 WD |
517 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { |
518 | int val; | |
519 | ||
520 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { | |
0e8d1586 | 521 | if (nxt >= CONFIG_ENV_SIZE) { |
a68d3ed0 WD |
522 | return (NULL); |
523 | } | |
524 | } | |
77ddac94 | 525 | if ((val=envmatch((uchar *)name, i)) < 0) |
a68d3ed0 | 526 | continue; |
77ddac94 | 527 | return ((char *)env_get_addr(val)); |
a68d3ed0 WD |
528 | } |
529 | ||
530 | return (NULL); | |
531 | } | |
532 | ||
77ddac94 | 533 | int getenv_r (char *name, char *buf, unsigned len) |
a68d3ed0 WD |
534 | { |
535 | int i, nxt; | |
536 | ||
537 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { | |
538 | int val, n; | |
539 | ||
540 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { | |
0e8d1586 | 541 | if (nxt >= CONFIG_ENV_SIZE) { |
a68d3ed0 WD |
542 | return (-1); |
543 | } | |
544 | } | |
77ddac94 | 545 | if ((val=envmatch((uchar *)name, i)) < 0) |
a68d3ed0 WD |
546 | continue; |
547 | /* found; copy out */ | |
548 | n = 0; | |
549 | while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0') | |
550 | ; | |
551 | if (len == n) | |
552 | *buf = '\0'; | |
553 | return (n); | |
554 | } | |
555 | return (-1); | |
556 | } | |
557 | ||
bdab39d3 | 558 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
ba69dc26 | 559 | |
a68d3ed0 WD |
560 | int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
561 | { | |
562 | extern char * env_name_spec; | |
563 | ||
564 | printf ("Saving Environment to %s...\n", env_name_spec); | |
565 | ||
566 | return (saveenv() ? 1 : 0); | |
567 | } | |
8bde7f77 | 568 | |
ba69dc26 MF |
569 | U_BOOT_CMD( |
570 | saveenv, 1, 0, do_saveenv, | |
2fb2604d | 571 | "save environment variables to persistent storage", |
a89c33db | 572 | "" |
ba69dc26 MF |
573 | ); |
574 | ||
a68d3ed0 WD |
575 | #endif |
576 | ||
577 | ||
578 | /************************************************************************ | |
579 | * Match a name / name=value pair | |
580 | * | |
581 | * s1 is either a simple 'name', or a 'name=value' pair. | |
582 | * i2 is the environment index for a 'name2=value2' pair. | |
583 | * If the names match, return the index for the value2, else NULL. | |
584 | */ | |
585 | ||
26a41790 | 586 | int envmatch (uchar *s1, int i2) |
a68d3ed0 WD |
587 | { |
588 | ||
589 | while (*s1 == env_get_char(i2++)) | |
590 | if (*s1++ == '=') | |
591 | return(i2); | |
592 | if (*s1 == '\0' && env_get_char(i2-1) == '=') | |
593 | return(i2); | |
594 | return(-1); | |
595 | } | |
8bde7f77 WD |
596 | |
597 | ||
598 | /**************************************************/ | |
599 | ||
0d498393 | 600 | U_BOOT_CMD( |
6d0f6bcf | 601 | printenv, CONFIG_SYS_MAXARGS, 1, do_printenv, |
2fb2604d | 602 | "print environment variables", |
8bde7f77 WD |
603 | "\n - print values of all environment variables\n" |
604 | "printenv name ...\n" | |
a89c33db | 605 | " - print value of environment variable 'name'" |
8bde7f77 WD |
606 | ); |
607 | ||
0d498393 | 608 | U_BOOT_CMD( |
6d0f6bcf | 609 | setenv, CONFIG_SYS_MAXARGS, 0, do_setenv, |
2fb2604d | 610 | "set environment variables", |
8bde7f77 WD |
611 | "name value ...\n" |
612 | " - set environment variable 'name' to 'value ...'\n" | |
613 | "setenv name\n" | |
a89c33db | 614 | " - delete environment variable 'name'" |
8bde7f77 WD |
615 | ); |
616 | ||
c76fe474 | 617 | #if defined(CONFIG_CMD_ASKENV) |
8bde7f77 | 618 | |
0d498393 | 619 | U_BOOT_CMD( |
6d0f6bcf | 620 | askenv, CONFIG_SYS_MAXARGS, 1, do_askenv, |
2fb2604d | 621 | "get environment variables from stdin", |
8bde7f77 WD |
622 | "name [message] [size]\n" |
623 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
624 | "askenv name\n" | |
625 | " - get environment variable 'name' from stdin\n" | |
626 | "askenv name size\n" | |
627 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
628 | "askenv name [message] size\n" | |
629 | " - display 'message' string and get environment variable 'name'" | |
a89c33db | 630 | "from stdin (max 'size' chars)" |
8bde7f77 | 631 | ); |
90253178 | 632 | #endif |
8bde7f77 | 633 | |
c76fe474 | 634 | #if defined(CONFIG_CMD_RUN) |
8bde7f77 | 635 | int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); |
0d498393 | 636 | U_BOOT_CMD( |
6d0f6bcf | 637 | run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d | 638 | "run commands in an environment variable", |
8bde7f77 | 639 | "var [...]\n" |
a89c33db | 640 | " - run the commands in the environment variable(s) 'var'" |
8bde7f77 | 641 | ); |
90253178 | 642 | #endif |