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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) && \ |
51bfee19 | 62 | !defined(CONFIG_ENV_IS_IN_NAND) && \ |
75eb82ec | 63 | !defined(CONFIG_ENV_IS_IN_NVRAM) && \ |
9656138f | 64 | !defined(CONFIG_ENV_IS_IN_ONENAND) && \ |
0b5099a8 | 65 | !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ |
93f6d725 | 66 | !defined(CONFIG_ENV_IS_NOWHERE) |
75eb82ec K |
67 | # error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|ONENAND|\ |
68 | SPI_FLASH|MG_DISK|NVRAM|NOWHERE} | |
a68d3ed0 WD |
69 | #endif |
70 | ||
71 | #define XMK_STR(x) #x | |
72 | #define MK_STR(x) XMK_STR(x) | |
73 | ||
74 | /************************************************************************ | |
75 | ************************************************************************/ | |
76 | ||
a68d3ed0 WD |
77 | /* |
78 | * Table with supported baudrates (defined in config_xyz.h) | |
79 | */ | |
6d0f6bcf | 80 | static const unsigned long baudrate_table[] = CONFIG_SYS_BAUDRATE_TABLE; |
a68d3ed0 WD |
81 | #define N_BAUDRATES (sizeof(baudrate_table) / sizeof(baudrate_table[0])) |
82 | ||
da95427c HS |
83 | /* |
84 | * This variable is incremented on each do_setenv (), so it can | |
85 | * be used via get_env_id() as an indication, if the environment | |
86 | * has changed or not. So it is possible to reread an environment | |
87 | * variable only if the environment was changed ... done so for | |
88 | * example in NetInitLoop() | |
89 | */ | |
2f70c49e | 90 | static int env_id = 1; |
a68d3ed0 | 91 | |
2f70c49e HS |
92 | int get_env_id (void) |
93 | { | |
94 | return env_id; | |
95 | } | |
a68d3ed0 WD |
96 | /************************************************************************ |
97 | * Command interface: print one or all environment variables | |
98 | */ | |
99 | ||
4c94f6c5 MF |
100 | /* |
101 | * state 0: finish printing this string and return (matched!) | |
102 | * state 1: no matching to be done; print everything | |
103 | * state 2: continue searching for matched name | |
104 | */ | |
105 | static int printenv(char *name, int state) | |
a68d3ed0 | 106 | { |
4c94f6c5 MF |
107 | int i, j; |
108 | char c, buf[17]; | |
109 | ||
110 | i = 0; | |
111 | buf[16] = '\0'; | |
112 | ||
113 | while (state && env_get_char(i) != '\0') { | |
114 | if (state == 2 && envmatch((uchar *)name, i) >= 0) | |
115 | state = 0; | |
116 | ||
117 | j = 0; | |
118 | do { | |
119 | buf[j++] = c = env_get_char(i++); | |
120 | if (j == sizeof(buf) - 1) { | |
121 | if (state <= 1) | |
122 | puts(buf); | |
123 | j = 0; | |
a68d3ed0 | 124 | } |
4c94f6c5 | 125 | } while (c != '\0'); |
a68d3ed0 | 126 | |
4c94f6c5 MF |
127 | if (state <= 1) { |
128 | if (j) | |
129 | puts(buf); | |
130 | putc('\n'); | |
131 | } | |
a68d3ed0 | 132 | |
4c94f6c5 MF |
133 | if (ctrlc()) |
134 | return -1; | |
a68d3ed0 WD |
135 | } |
136 | ||
4c94f6c5 MF |
137 | if (state == 0) |
138 | i = 0; | |
139 | return i; | |
140 | } | |
a68d3ed0 | 141 | |
4c94f6c5 MF |
142 | int do_printenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
143 | { | |
144 | int i; | |
145 | int rcode = 0; | |
a68d3ed0 | 146 | |
4c94f6c5 MF |
147 | if (argc == 1) { |
148 | /* print all env vars */ | |
149 | rcode = printenv(NULL, 1); | |
150 | if (rcode < 0) | |
151 | return 1; | |
152 | printf("\nEnvironment size: %d/%ld bytes\n", | |
153 | rcode, (ulong)ENV_SIZE); | |
154 | return 0; | |
155 | } | |
a68d3ed0 | 156 | |
4c94f6c5 MF |
157 | /* print selected env vars */ |
158 | for (i = 1; i < argc; ++i) { | |
159 | char *name = argv[i]; | |
160 | if (printenv(name, 2)) { | |
161 | printf("## Error: \"%s\" not defined\n", name); | |
162 | ++rcode; | |
a68d3ed0 WD |
163 | } |
164 | } | |
4c94f6c5 | 165 | |
a68d3ed0 WD |
166 | return rcode; |
167 | } | |
168 | ||
169 | /************************************************************************ | |
170 | * Set a new environment variable, | |
171 | * or replace or delete an existing one. | |
172 | * | |
173 | * This function will ONLY work with a in-RAM copy of the environment | |
174 | */ | |
175 | ||
176 | int _do_setenv (int flag, int argc, char *argv[]) | |
177 | { | |
a68d3ed0 WD |
178 | int i, len, oldval; |
179 | int console = -1; | |
180 | uchar *env, *nxt = NULL; | |
77ddac94 | 181 | char *name; |
a68d3ed0 WD |
182 | bd_t *bd = gd->bd; |
183 | ||
184 | uchar *env_data = env_get_addr(0); | |
185 | ||
186 | if (!env_data) /* need copy in RAM */ | |
187 | return 1; | |
188 | ||
189 | name = argv[1]; | |
190 | ||
471a7be7 WD |
191 | if (strchr(name, '=')) { |
192 | printf ("## Error: illegal character '=' in variable name \"%s\"\n", name); | |
193 | return 1; | |
194 | } | |
195 | ||
2f70c49e | 196 | env_id++; |
a68d3ed0 WD |
197 | /* |
198 | * search if variable with this name already exists | |
199 | */ | |
200 | oldval = -1; | |
201 | for (env=env_data; *env; env=nxt+1) { | |
202 | for (nxt=env; *nxt; ++nxt) | |
203 | ; | |
77ddac94 | 204 | if ((oldval = envmatch((uchar *)name, env-env_data)) >= 0) |
a68d3ed0 WD |
205 | break; |
206 | } | |
207 | ||
9c5586aa AR |
208 | /* Check for console redirection */ |
209 | if (strcmp(name,"stdin") == 0) { | |
210 | console = stdin; | |
211 | } else if (strcmp(name,"stdout") == 0) { | |
212 | console = stdout; | |
213 | } else if (strcmp(name,"stderr") == 0) { | |
214 | console = stderr; | |
215 | } | |
216 | ||
217 | if (console != -1) { | |
218 | if (argc < 3) { /* Cannot delete it! */ | |
219 | printf("Can't delete \"%s\"\n", name); | |
220 | return 1; | |
221 | } | |
222 | ||
223 | #ifdef CONFIG_CONSOLE_MUX | |
224 | i = iomux_doenv(console, argv[2]); | |
225 | if (i) | |
226 | return i; | |
227 | #else | |
228 | /* Try assigning specified device */ | |
229 | if (console_assign (console, argv[2]) < 0) | |
230 | return 1; | |
231 | ||
232 | #ifdef CONFIG_SERIAL_MULTI | |
233 | if (serial_assign (argv[2]) < 0) | |
234 | return 1; | |
235 | #endif | |
236 | #endif /* CONFIG_CONSOLE_MUX */ | |
237 | } | |
238 | ||
a68d3ed0 WD |
239 | /* |
240 | * Delete any existing definition | |
241 | */ | |
242 | if (oldval >= 0) { | |
243 | #ifndef CONFIG_ENV_OVERWRITE | |
244 | ||
245 | /* | |
0587597c SR |
246 | * Ethernet Address and serial# can be set only once, |
247 | * ver is readonly. | |
a68d3ed0 | 248 | */ |
f6a69559 | 249 | if ( |
c74b2108 SK |
250 | #ifdef CONFIG_HAS_UID |
251 | /* Allow serial# forced overwrite with 0xdeaf4add flag */ | |
f6a69559 | 252 | ((strcmp (name, "serial#") == 0) && (flag != 0xdeaf4add)) || |
c74b2108 | 253 | #else |
f6a69559 | 254 | (strcmp (name, "serial#") == 0) || |
c74b2108 | 255 | #endif |
a68d3ed0 WD |
256 | ((strcmp (name, "ethaddr") == 0) |
257 | #if defined(CONFIG_OVERWRITE_ETHADDR_ONCE) && defined(CONFIG_ETHADDR) | |
77ddac94 | 258 | && (strcmp ((char *)env_get_addr(oldval),MK_STR(CONFIG_ETHADDR)) != 0) |
a68d3ed0 WD |
259 | #endif /* CONFIG_OVERWRITE_ETHADDR_ONCE && CONFIG_ETHADDR */ |
260 | ) ) { | |
261 | printf ("Can't overwrite \"%s\"\n", name); | |
262 | return 1; | |
263 | } | |
264 | #endif | |
265 | ||
a68d3ed0 WD |
266 | /* |
267 | * Switch to new baudrate if new baudrate is supported | |
268 | */ | |
269 | if (strcmp(argv[1],"baudrate") == 0) { | |
270 | int baudrate = simple_strtoul(argv[2], NULL, 10); | |
271 | int i; | |
272 | for (i=0; i<N_BAUDRATES; ++i) { | |
273 | if (baudrate == baudrate_table[i]) | |
274 | break; | |
275 | } | |
276 | if (i == N_BAUDRATES) { | |
277 | printf ("## Baudrate %d bps not supported\n", | |
278 | baudrate); | |
279 | return 1; | |
280 | } | |
281 | printf ("## Switch baudrate to %d bps and press ENTER ...\n", | |
282 | baudrate); | |
283 | udelay(50000); | |
284 | gd->baudrate = baudrate; | |
c84bad0e | 285 | #if defined(CONFIG_PPC) || defined(CONFIG_MCF52x2) |
d0fb80c3 WD |
286 | gd->bd->bi_baudrate = baudrate; |
287 | #endif | |
288 | ||
a68d3ed0 WD |
289 | serial_setbrg (); |
290 | udelay(50000); | |
291 | for (;;) { | |
292 | if (getc() == '\r') | |
293 | break; | |
294 | } | |
295 | } | |
296 | ||
297 | if (*++nxt == '\0') { | |
298 | if (env > env_data) { | |
299 | env--; | |
300 | } else { | |
301 | *env = '\0'; | |
302 | } | |
303 | } else { | |
304 | for (;;) { | |
305 | *env = *nxt++; | |
306 | if ((*env == '\0') && (*nxt == '\0')) | |
307 | break; | |
308 | ++env; | |
309 | } | |
310 | } | |
311 | *++env = '\0'; | |
312 | } | |
313 | ||
a68d3ed0 WD |
314 | /* Delete only ? */ |
315 | if ((argc < 3) || argv[2] == NULL) { | |
316 | env_crc_update (); | |
317 | return 0; | |
318 | } | |
319 | ||
320 | /* | |
321 | * Append new definition at the end | |
322 | */ | |
323 | for (env=env_data; *env || *(env+1); ++env) | |
324 | ; | |
325 | if (env > env_data) | |
326 | ++env; | |
327 | /* | |
328 | * Overflow when: | |
329 | * "name" + "=" + "val" +"\0\0" > ENV_SIZE - (env-env_data) | |
330 | */ | |
331 | len = strlen(name) + 2; | |
332 | /* add '=' for first arg, ' ' for all others */ | |
333 | for (i=2; i<argc; ++i) { | |
334 | len += strlen(argv[i]) + 1; | |
335 | } | |
336 | if (len > (&env_data[ENV_SIZE]-env)) { | |
337 | printf ("## Error: environment overflow, \"%s\" deleted\n", name); | |
338 | return 1; | |
339 | } | |
340 | while ((*env = *name++) != '\0') | |
341 | env++; | |
342 | for (i=2; i<argc; ++i) { | |
343 | char *val = argv[i]; | |
344 | ||
345 | *env = (i==2) ? '=' : ' '; | |
346 | while ((*++env = *val++) != '\0') | |
347 | ; | |
348 | } | |
349 | ||
350 | /* end is marked with double '\0' */ | |
351 | *++env = '\0'; | |
352 | ||
353 | /* Update CRC */ | |
354 | env_crc_update (); | |
355 | ||
356 | /* | |
357 | * Some variables should be updated when the corresponding | |
358 | * entry in the enviornment is changed | |
359 | */ | |
360 | ||
56b555a6 | 361 | if (strcmp(argv[1],"ethaddr") == 0) |
a68d3ed0 | 362 | return 0; |
a68d3ed0 WD |
363 | |
364 | if (strcmp(argv[1],"ipaddr") == 0) { | |
365 | char *s = argv[2]; /* always use only one arg */ | |
366 | char *e; | |
367 | unsigned long addr; | |
368 | bd->bi_ip_addr = 0; | |
369 | for (addr=0, i=0; i<4; ++i) { | |
370 | ulong val = s ? simple_strtoul(s, &e, 10) : 0; | |
371 | addr <<= 8; | |
372 | addr |= (val & 0xFF); | |
373 | if (s) s = (*e) ? e+1 : e; | |
374 | } | |
375 | bd->bi_ip_addr = htonl(addr); | |
376 | return 0; | |
377 | } | |
378 | if (strcmp(argv[1],"loadaddr") == 0) { | |
379 | load_addr = simple_strtoul(argv[2], NULL, 16); | |
380 | return 0; | |
381 | } | |
c76fe474 | 382 | #if defined(CONFIG_CMD_NET) |
a68d3ed0 WD |
383 | if (strcmp(argv[1],"bootfile") == 0) { |
384 | copy_filename (BootFile, argv[2], sizeof(BootFile)); | |
385 | return 0; | |
386 | } | |
90253178 | 387 | #endif |
c7de829c | 388 | |
0587597c | 389 | #ifdef CONFIG_AMIGAONEG3SE |
c7de829c WD |
390 | if (strcmp(argv[1], "vga_fg_color") == 0 || |
391 | strcmp(argv[1], "vga_bg_color") == 0 ) { | |
392 | extern void video_set_color(unsigned char attr); | |
393 | extern unsigned char video_get_attr(void); | |
394 | ||
395 | video_set_color(video_get_attr()); | |
396 | return 0; | |
397 | } | |
398 | #endif /* CONFIG_AMIGAONEG3SE */ | |
399 | ||
a68d3ed0 WD |
400 | return 0; |
401 | } | |
402 | ||
75678c80 | 403 | int setenv (char *varname, char *varvalue) |
a68d3ed0 WD |
404 | { |
405 | char *argv[4] = { "setenv", varname, varvalue, NULL }; | |
b0fa8e50 | 406 | if ((varvalue == NULL) || (varvalue[0] == '\0')) |
75678c80 | 407 | return _do_setenv (0, 2, argv); |
9ffd451a | 408 | else |
75678c80 | 409 | return _do_setenv (0, 3, argv); |
a68d3ed0 WD |
410 | } |
411 | ||
c74b2108 SK |
412 | #ifdef CONFIG_HAS_UID |
413 | void forceenv (char *varname, char *varvalue) | |
414 | { | |
415 | char *argv[4] = { "forceenv", varname, varvalue, NULL }; | |
416 | _do_setenv (0xdeaf4add, 3, argv); | |
417 | } | |
418 | #endif | |
419 | ||
420 | int do_setenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
a68d3ed0 WD |
421 | { |
422 | if (argc < 2) { | |
62c3ae7c | 423 | cmd_usage(cmdtp); |
a68d3ed0 WD |
424 | return 1; |
425 | } | |
426 | ||
427 | return _do_setenv (flag, argc, argv); | |
428 | } | |
429 | ||
430 | /************************************************************************ | |
431 | * Prompt for environment variable | |
432 | */ | |
433 | ||
c76fe474 | 434 | #if defined(CONFIG_CMD_ASKENV) |
a68d3ed0 WD |
435 | int do_askenv ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
436 | { | |
6d0f6bcf JCPV |
437 | extern char console_buffer[CONFIG_SYS_CBSIZE]; |
438 | char message[CONFIG_SYS_CBSIZE]; | |
439 | int size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
440 | int len; |
441 | char *local_args[4]; | |
442 | ||
443 | local_args[0] = argv[0]; | |
444 | local_args[1] = argv[1]; | |
445 | local_args[2] = NULL; | |
446 | local_args[3] = NULL; | |
447 | ||
448 | if (argc < 2) { | |
62c3ae7c | 449 | cmd_usage(cmdtp); |
a68d3ed0 WD |
450 | return 1; |
451 | } | |
452 | /* Check the syntax */ | |
453 | switch (argc) { | |
454 | case 1: | |
62c3ae7c | 455 | cmd_usage(cmdtp); |
a68d3ed0 WD |
456 | return 1; |
457 | ||
458 | case 2: /* askenv envname */ | |
459 | sprintf (message, "Please enter '%s':", argv[1]); | |
460 | break; | |
461 | ||
462 | case 3: /* askenv envname size */ | |
463 | sprintf (message, "Please enter '%s':", argv[1]); | |
464 | size = simple_strtoul (argv[2], NULL, 10); | |
465 | break; | |
466 | ||
467 | default: /* askenv envname message1 ... messagen size */ | |
468 | { | |
469 | int i; | |
470 | int pos = 0; | |
471 | ||
472 | for (i = 2; i < argc - 1; i++) { | |
473 | if (pos) { | |
474 | message[pos++] = ' '; | |
475 | } | |
476 | strcpy (message+pos, argv[i]); | |
477 | pos += strlen(argv[i]); | |
478 | } | |
479 | message[pos] = '\0'; | |
480 | size = simple_strtoul (argv[argc - 1], NULL, 10); | |
481 | } | |
482 | break; | |
483 | } | |
484 | ||
6d0f6bcf JCPV |
485 | if (size >= CONFIG_SYS_CBSIZE) |
486 | size = CONFIG_SYS_CBSIZE - 1; | |
a68d3ed0 WD |
487 | |
488 | if (size <= 0) | |
489 | return 1; | |
490 | ||
491 | /* prompt for input */ | |
492 | len = readline (message); | |
493 | ||
494 | if (size < len) | |
495 | console_buffer[size] = '\0'; | |
496 | ||
497 | len = 2; | |
498 | if (console_buffer[0] != '\0') { | |
499 | local_args[2] = console_buffer; | |
500 | len = 3; | |
501 | } | |
502 | ||
503 | /* Continue calling setenv code */ | |
504 | return _do_setenv (flag, len, local_args); | |
505 | } | |
90253178 | 506 | #endif |
a68d3ed0 | 507 | |
246c6922 PT |
508 | /************************************************************************ |
509 | * Interactively edit an environment variable | |
510 | */ | |
511 | #if defined(CONFIG_CMD_EDITENV) | |
512 | int do_editenv(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
513 | { | |
514 | char buffer[CONFIG_SYS_CBSIZE]; | |
515 | char *init_val; | |
516 | int len; | |
517 | ||
518 | if (argc < 2) { | |
519 | cmd_usage(cmdtp); | |
520 | return 1; | |
521 | } | |
522 | ||
523 | /* Set read buffer to initial value or empty sting */ | |
524 | init_val = getenv(argv[1]); | |
525 | if (init_val) | |
526 | len = sprintf(buffer, "%s", init_val); | |
527 | else | |
528 | buffer[0] = '\0'; | |
529 | ||
530 | readline_into_buffer("edit: ", buffer); | |
531 | ||
532 | return setenv(argv[1], buffer); | |
533 | } | |
534 | #endif /* CONFIG_CMD_EDITENV */ | |
535 | ||
a68d3ed0 WD |
536 | /************************************************************************ |
537 | * Look up variable from environment, | |
538 | * return address of storage for that variable, | |
539 | * or NULL if not found | |
540 | */ | |
541 | ||
77ddac94 | 542 | char *getenv (char *name) |
a68d3ed0 WD |
543 | { |
544 | int i, nxt; | |
545 | ||
2a3cb020 WD |
546 | WATCHDOG_RESET(); |
547 | ||
a68d3ed0 WD |
548 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { |
549 | int val; | |
550 | ||
551 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { | |
0e8d1586 | 552 | if (nxt >= CONFIG_ENV_SIZE) { |
a68d3ed0 WD |
553 | return (NULL); |
554 | } | |
555 | } | |
77ddac94 | 556 | if ((val=envmatch((uchar *)name, i)) < 0) |
a68d3ed0 | 557 | continue; |
77ddac94 | 558 | return ((char *)env_get_addr(val)); |
a68d3ed0 WD |
559 | } |
560 | ||
561 | return (NULL); | |
562 | } | |
563 | ||
77ddac94 | 564 | int getenv_r (char *name, char *buf, unsigned len) |
a68d3ed0 WD |
565 | { |
566 | int i, nxt; | |
567 | ||
568 | for (i=0; env_get_char(i) != '\0'; i=nxt+1) { | |
569 | int val, n; | |
570 | ||
571 | for (nxt=i; env_get_char(nxt) != '\0'; ++nxt) { | |
0e8d1586 | 572 | if (nxt >= CONFIG_ENV_SIZE) { |
a68d3ed0 WD |
573 | return (-1); |
574 | } | |
575 | } | |
77ddac94 | 576 | if ((val=envmatch((uchar *)name, i)) < 0) |
a68d3ed0 WD |
577 | continue; |
578 | /* found; copy out */ | |
579 | n = 0; | |
580 | while ((len > n++) && (*buf++ = env_get_char(val++)) != '\0') | |
581 | ; | |
582 | if (len == n) | |
583 | *buf = '\0'; | |
584 | return (n); | |
585 | } | |
586 | return (-1); | |
587 | } | |
588 | ||
bdab39d3 | 589 | #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) |
ba69dc26 | 590 | |
a68d3ed0 WD |
591 | int do_saveenv (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) |
592 | { | |
593 | extern char * env_name_spec; | |
594 | ||
595 | printf ("Saving Environment to %s...\n", env_name_spec); | |
596 | ||
597 | return (saveenv() ? 1 : 0); | |
598 | } | |
8bde7f77 | 599 | |
ba69dc26 MF |
600 | U_BOOT_CMD( |
601 | saveenv, 1, 0, do_saveenv, | |
2fb2604d | 602 | "save environment variables to persistent storage", |
a89c33db | 603 | "" |
ba69dc26 MF |
604 | ); |
605 | ||
a68d3ed0 WD |
606 | #endif |
607 | ||
608 | ||
609 | /************************************************************************ | |
610 | * Match a name / name=value pair | |
611 | * | |
612 | * s1 is either a simple 'name', or a 'name=value' pair. | |
613 | * i2 is the environment index for a 'name2=value2' pair. | |
614 | * If the names match, return the index for the value2, else NULL. | |
615 | */ | |
616 | ||
26a41790 | 617 | int envmatch (uchar *s1, int i2) |
a68d3ed0 WD |
618 | { |
619 | ||
620 | while (*s1 == env_get_char(i2++)) | |
621 | if (*s1++ == '=') | |
622 | return(i2); | |
623 | if (*s1 == '\0' && env_get_char(i2-1) == '=') | |
624 | return(i2); | |
625 | return(-1); | |
626 | } | |
8bde7f77 WD |
627 | |
628 | ||
629 | /**************************************************/ | |
630 | ||
246c6922 PT |
631 | #if defined(CONFIG_CMD_EDITENV) |
632 | U_BOOT_CMD( | |
633 | editenv, 2, 0, do_editenv, | |
634 | "edit environment variable", | |
635 | "name\n" | |
636 | " - edit environment variable 'name'" | |
637 | ); | |
638 | #endif | |
639 | ||
0d498393 | 640 | U_BOOT_CMD( |
6d0f6bcf | 641 | printenv, CONFIG_SYS_MAXARGS, 1, do_printenv, |
2fb2604d | 642 | "print environment variables", |
8bde7f77 WD |
643 | "\n - print values of all environment variables\n" |
644 | "printenv name ...\n" | |
a89c33db | 645 | " - print value of environment variable 'name'" |
8bde7f77 WD |
646 | ); |
647 | ||
0d498393 | 648 | U_BOOT_CMD( |
6d0f6bcf | 649 | setenv, CONFIG_SYS_MAXARGS, 0, do_setenv, |
2fb2604d | 650 | "set environment variables", |
8bde7f77 WD |
651 | "name value ...\n" |
652 | " - set environment variable 'name' to 'value ...'\n" | |
653 | "setenv name\n" | |
a89c33db | 654 | " - delete environment variable 'name'" |
8bde7f77 WD |
655 | ); |
656 | ||
c76fe474 | 657 | #if defined(CONFIG_CMD_ASKENV) |
8bde7f77 | 658 | |
0d498393 | 659 | U_BOOT_CMD( |
6d0f6bcf | 660 | askenv, CONFIG_SYS_MAXARGS, 1, do_askenv, |
2fb2604d | 661 | "get environment variables from stdin", |
8bde7f77 WD |
662 | "name [message] [size]\n" |
663 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
664 | "askenv name\n" | |
665 | " - get environment variable 'name' from stdin\n" | |
666 | "askenv name size\n" | |
667 | " - get environment variable 'name' from stdin (max 'size' chars)\n" | |
668 | "askenv name [message] size\n" | |
669 | " - display 'message' string and get environment variable 'name'" | |
a89c33db | 670 | "from stdin (max 'size' chars)" |
8bde7f77 | 671 | ); |
90253178 | 672 | #endif |
8bde7f77 | 673 | |
c76fe474 | 674 | #if defined(CONFIG_CMD_RUN) |
8bde7f77 | 675 | int do_run (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]); |
0d498393 | 676 | U_BOOT_CMD( |
6d0f6bcf | 677 | run, CONFIG_SYS_MAXARGS, 1, do_run, |
2fb2604d | 678 | "run commands in an environment variable", |
8bde7f77 | 679 | "var [...]\n" |
a89c33db | 680 | " - run the commands in the environment variable(s) 'var'" |
8bde7f77 | 681 | ); |
90253178 | 682 | #endif |