]>
Commit | Line | Data |
---|---|---|
d684c216 L |
1 | #include "common.h" |
2 | #include <string.h> | |
3 | #include <stdlib.h> | |
d684c216 L |
4 | #include <avr/eeprom.h> |
5 | ||
6 | #include "config.h" | |
7 | #include "debug.h" | |
8 | #include "xmalloc.h" | |
9 | #include "crc.h" | |
10 | #include "command.h" | |
11 | ||
12 | #include "env.h" | |
13 | ||
14 | ||
323398b1 L |
15 | #define ENV_SIZE (CONFIG_ENV_SIZE - sizeof(uint16_t) -1) |
16 | #define ACTIVE_FLAG 1 | |
17 | #define OBSOLETE_FLAG 0 | |
d684c216 | 18 | |
7e24905c L |
19 | #define ENVLIST_DELETE (1<<0) |
20 | ||
d684c216 | 21 | |
534e1dfc L |
22 | /* |
23 | * Default Environment | |
24 | */ | |
1da3acc4 L |
25 | |
26 | #define DELIM "\0" | |
27 | ||
534e1dfc L |
28 | const FLASH char default_env[] = { |
29 | "bootdelay=" "3" DELIM | |
f76ca346 | 30 | "bootcmd=" "reset; loadf; go ${startaddr}" DELIM |
534e1dfc L |
31 | "baudrate=" "115200" DELIM |
32 | "startaddr=" "0" DELIM | |
33 | DELIM | |
34 | }; | |
35 | ||
1da3acc4 | 36 | /* EEPROM storage */ |
d684c216 L |
37 | typedef struct environment_s { |
38 | uint16_t crc; /* CRC16 over data bytes */ | |
323398b1 | 39 | uint8_t flags; /* active/obsolete flags */ |
d684c216 L |
40 | char data[ENV_SIZE]; /* Environment data */ |
41 | } env_t; | |
42 | ||
43 | ||
1da3acc4 | 44 | /* */ |
d684c216 | 45 | typedef struct env_item_s { |
55027f3b | 46 | char * envvar; |
d684c216 L |
47 | } env_item_t; |
48 | ||
1da3acc4 | 49 | |
323398b1 | 50 | static uint8_t env_valid; |
d684c216 L |
51 | static env_item_t env_list[CONFIG_ENVVAR_MAX]; |
52 | static int entrycount; | |
53 | ||
54 | ||
1da3acc4 L |
55 | static |
56 | char env_get_char(uint16_t index) | |
d684c216 L |
57 | { |
58 | unsigned int off = CONFIG_ENV_OFFSET; | |
55027f3b | 59 | char ret; |
d684c216 | 60 | |
55027f3b L |
61 | switch (env_valid) { |
62 | case 2: | |
63 | off += CONFIG_ENV_SIZE; | |
64 | case 1: | |
65 | ret = (char) eeprom_read_byte((const uint8_t *)off + index + | |
d684c216 | 66 | offsetof(env_t, data)); |
55027f3b | 67 | break; |
d684c216 | 68 | |
55027f3b L |
69 | default: |
70 | ret = default_env[index]; | |
d684c216 | 71 | } |
d684c216 | 72 | |
55027f3b | 73 | return ret; |
d684c216 L |
74 | } |
75 | ||
d684c216 L |
76 | |
77 | static | |
78 | int comp_env_items(const void *m1, const void *m2) | |
79 | { | |
d684c216 L |
80 | env_item_t *ep1 = (env_item_t *) m1; |
81 | env_item_t *ep2 = (env_item_t *) m2; | |
7e24905c | 82 | |
55027f3b | 83 | return strcmp(ep1->envvar, ep2->envvar); |
d684c216 L |
84 | } |
85 | ||
1da3acc4 | 86 | |
7e24905c L |
87 | env_item_t *envlist_search(const MEMX char *name) |
88 | { | |
55027f3b L |
89 | env_item_t e; |
90 | ||
91 | e.envvar = (char *) name; | |
7e24905c L |
92 | |
93 | #ifdef __MEMX | |
94 | char buf[CONFIG_SYS_ENV_NAMELEN+1]; | |
95 | ||
96 | if (__builtin_avr_flash_segment(name) != -1) { | |
55027f3b | 97 | char *p = buf; |
7e24905c L |
98 | while ((*p++ = *name++) != '\0') |
99 | ; | |
55027f3b | 100 | e.envvar = buf; |
7e24905c L |
101 | } |
102 | #endif /* __MEMX */ | |
103 | ||
55027f3b L |
104 | return bsearch(&e, env_list, entrycount, |
105 | sizeof(env_item_t), comp_env_items); | |
7e24905c L |
106 | } |
107 | ||
108 | ||
109 | static | |
110 | env_item_t *envlist_enter(env_item_t *e) | |
111 | { | |
7e24905c L |
112 | const size_t size = sizeof(env_item_t); |
113 | env_item_t *ep; | |
114 | ||
55027f3b L |
115 | ep = bsearch(e, env_list, entrycount, |
116 | size, comp_env_items); | |
7e24905c L |
117 | |
118 | if (ep == NULL) { | |
119 | if (entrycount < CONFIG_ENVVAR_MAX) { | |
120 | ||
121 | env_list[entrycount++] = *e; | |
122 | qsort(env_list, entrycount, size, comp_env_items); | |
55027f3b L |
123 | ep = bsearch(e, env_list, entrycount, |
124 | size, comp_env_items); | |
7e24905c L |
125 | } |
126 | } else { | |
55027f3b L |
127 | free(ep->envvar); |
128 | ep->envvar = e->envvar; | |
7e24905c L |
129 | } |
130 | ||
131 | return ep; | |
132 | } | |
133 | ||
134 | ||
135 | static | |
136 | int env_item_delete(env_item_t *ep) | |
137 | { | |
138 | if (entrycount == 0) | |
139 | return -1; | |
55027f3b L |
140 | |
141 | free(ep->envvar); | |
7e24905c L |
142 | |
143 | entrycount--; | |
144 | size_t size = sizeof(env_item_t); | |
145 | memmove(ep, ep + 1, (env_list - ep)*size + entrycount*size); | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
150 | static | |
151 | int envlist_delete(const char *name) | |
152 | { | |
55027f3b L |
153 | env_item_t e; |
154 | ||
155 | e.envvar = (char *) name; | |
156 | ||
157 | env_item_t *ep = bsearch(&e, env_list, entrycount, | |
158 | sizeof(env_item_t), comp_env_items); | |
7e24905c L |
159 | |
160 | if (ep != NULL) | |
161 | return env_item_delete(ep); | |
162 | ||
163 | return 1; | |
164 | } | |
165 | ||
166 | ||
7e24905c L |
167 | |
168 | static | |
169 | int envlist_import(uint8_t flags) | |
d684c216 | 170 | { |
55027f3b L |
171 | uint16_t index; |
172 | ||
173 | int len; | |
1da3acc4 | 174 | env_item_t e; |
55027f3b L |
175 | char *np, c; |
176 | uint_fast8_t ef; | |
7e24905c L |
177 | |
178 | if ((flags & ENVLIST_DELETE) != 0) | |
179 | while (entrycount != 0) | |
180 | env_item_delete(&env_list[entrycount-1]); | |
181 | ||
55027f3b L |
182 | for (index = 0; env_get_char(index) != '\0'; ) { |
183 | for (len = 0; env_get_char(index + len) != '\0'; ++len) { | |
184 | if ((index + len) >= ENV_SIZE) | |
185 | return -1; | |
1da3acc4 | 186 | } |
d684c216 | 187 | |
55027f3b L |
188 | np = (char *) xmalloc(len+1); |
189 | if (np == NULL) { | |
190 | printf_P(PSTR("## Can't malloc %d bytes\n"), len+1); | |
191 | return 1; | |
d684c216 | 192 | } |
55027f3b L |
193 | e.envvar = np; |
194 | ef = 0; | |
195 | while ((c = env_get_char(index++)) != '\0') { | |
196 | if (!ef && (c == '=')) { | |
197 | *np = '\0'; | |
198 | ef = 1; | |
199 | } else | |
200 | *np = c; | |
201 | np++; | |
202 | } | |
203 | *np = '\0'; | |
204 | envlist_enter(&e); | |
d684c216 | 205 | } |
d684c216 | 206 | |
55027f3b | 207 | |
1da3acc4 L |
208 | return 0; |
209 | } | |
d684c216 L |
210 | |
211 | ||
1da3acc4 L |
212 | static |
213 | uint16_t env_crc(uint16_t data_offset) | |
323398b1 | 214 | { |
7e24905c | 215 | uint16_t crc; |
1da3acc4 L |
216 | uint16_t i; |
217 | char c, c0; | |
323398b1 | 218 | |
1da3acc4 L |
219 | crc = 0xffff; |
220 | c = 0xff; | |
221 | for (i = 0; !(c == 0 && c0 == 0) && i < ENV_SIZE; i++) | |
222 | { | |
7e24905c | 223 | c0 = c; |
1da3acc4 L |
224 | c = eeprom_read_byte((const uint8_t *) data_offset + i); |
225 | crc = crc16(crc, c); | |
323398b1 | 226 | } |
1da3acc4 L |
227 | return crc ; |
228 | } | |
323398b1 L |
229 | |
230 | ||
1da3acc4 L |
231 | /** |
232 | * return valid env | |
323398b1 | 233 | */ |
1da3acc4 L |
234 | static |
235 | int env_check_valid(void) | |
236 | { | |
237 | const uint16_t offset[2] = {CONFIG_ENV_OFFSET, | |
238 | CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE}; | |
239 | uint_fast8_t flags[2], crc_ok[2]; | |
240 | int rc; | |
241 | ||
242 | /* read FLAGS */ | |
243 | flags[0] = eeprom_read_byte ((uint8_t *) offset[0] + | |
244 | offsetof(env_t, flags)); | |
245 | flags[1] = eeprom_read_byte ((uint8_t *) offset[1] + | |
246 | offsetof(env_t, flags)); | |
247 | ||
248 | /* check CRC */ | |
249 | crc_ok[0] = ( | |
250 | eeprom_read_word((uint16_t *) offset[0] + | |
251 | offsetof(env_t, crc)) | |
252 | == env_crc(offset[0] + offsetof(env_t, data)) | |
253 | ); | |
254 | crc_ok[1] = ( | |
255 | eeprom_read_word((uint16_t *) offset[1] + | |
256 | offsetof(env_t, crc)) | |
257 | == env_crc(offset[1] + offsetof(env_t, data)) | |
258 | ); | |
323398b1 | 259 | |
1da3acc4 L |
260 | if (!crc_ok[0] && !crc_ok[1]) { |
261 | rc = 0; | |
323398b1 | 262 | |
1da3acc4 L |
263 | } else if (crc_ok[0] && !crc_ok[1]) { |
264 | rc = 1; | |
265 | } else if (!crc_ok[0] && crc_ok[1]) { | |
266 | rc = 2; | |
267 | } else { | |
268 | /* both ok - check serial */ | |
269 | #if 1 | |
270 | if (flags[1] == ACTIVE_FLAG && flags[0] != ACTIVE_FLAG) | |
271 | rc = 2; | |
272 | else if (flags[1] == OBSOLETE_FLAG && flags[0] == 0xFF) | |
273 | rc = 2; | |
274 | else | |
275 | rc = 1; | |
276 | #else | |
277 | if (flags[0] == ACTIVE_FLAG && flags[1] == OBSOLETE_FLAG) | |
278 | rc = 1; | |
279 | else if (flags[0] == OBSOLETE_FLAG && flags[1] == ACTIVE_FLAG) | |
280 | rc = 2; | |
281 | else if (flags[0] == 0xFF && flags[1] == 0) | |
282 | rc = 2; | |
283 | else if (flags[1] == 0xFF && flags[0] == 0) | |
284 | rc = 1; | |
285 | else /* flags are equal - almost impossible */ | |
286 | rc = 1; | |
287 | #endif | |
323398b1 | 288 | } |
7e24905c | 289 | |
1da3acc4 L |
290 | return rc; |
291 | } | |
323398b1 L |
292 | |
293 | ||
1da3acc4 | 294 | int env_init(void) |
323398b1 | 295 | { |
1da3acc4 L |
296 | env_valid = env_check_valid(); |
297 | if (env_valid == 0) { | |
55027f3b | 298 | printf_P(PSTR("*** Warning - bad CRC, " |
1da3acc4 | 299 | "using default environment\n\n")); |
d684c216 | 300 | } |
55027f3b | 301 | |
7e24905c L |
302 | envlist_import(ENVLIST_DELETE); |
303 | return 0; | |
323398b1 | 304 | } |
d684c216 | 305 | |
1da3acc4 | 306 | |
fc30b18e | 307 | char *getenv(const MEMX char *name) |
d684c216 L |
308 | { |
309 | env_item_t *ep; | |
310 | char *ret = NULL; | |
311 | ||
55027f3b | 312 | ep = envlist_search(name); |
d684c216 | 313 | if (ep != NULL) |
55027f3b | 314 | ret = ep->envvar + strlen(ep->envvar) +1; |
d684c216 L |
315 | return ret; |
316 | } | |
317 | ||
1da3acc4 L |
318 | static |
319 | int env_item_save(env_item_t *ep, uint16_t offset, int space_left) | |
323398b1 | 320 | { |
55027f3b L |
321 | int nlen, vlen; |
322 | char *var = ep->envvar; | |
323398b1 | 323 | |
55027f3b L |
324 | nlen = strlen(var); |
325 | if (nlen == 0) | |
1da3acc4 | 326 | return 0; |
55027f3b L |
327 | vlen = strlen(var + nlen + 1); |
328 | if (vlen == 0) | |
329 | return 0; | |
330 | if (nlen + vlen + 2 > space_left) | |
1da3acc4 | 331 | return 0; |
7e24905c | 332 | |
55027f3b L |
333 | eeprom_update_block(var, (uint8_t *) offset, nlen); |
334 | offset += nlen; | |
335 | eeprom_update_byte((uint8_t *) offset++, '='); | |
336 | eeprom_update_block(var + nlen +1, (uint8_t *) offset, vlen+1); | |
337 | ||
338 | return nlen + vlen + 2; | |
7e24905c | 339 | } |
1da3acc4 | 340 | |
323398b1 | 341 | |
1da3acc4 | 342 | static |
d684c216 L |
343 | int saveenv(void) |
344 | { | |
323398b1 L |
345 | unsigned int off = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; |
346 | unsigned int off_red = CONFIG_ENV_OFFSET; | |
347 | unsigned int pos; | |
348 | int len, left; | |
349 | uint16_t crc; | |
350 | int rc = 0; | |
d684c216 | 351 | |
323398b1 L |
352 | if (env_valid == 2) { |
353 | off = CONFIG_ENV_OFFSET; | |
354 | off_red = CONFIG_ENV_OFFSET + CONFIG_ENV_SIZE; | |
355 | } | |
356 | ||
7e24905c | 357 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), 0xff); |
d684c216 | 358 | |
323398b1 L |
359 | pos = off + offsetof(env_t, data); |
360 | left = ENV_SIZE - 1; | |
361 | for (int i = 0 ; i < entrycount; i++) { | |
362 | len = env_item_save(&env_list[i], pos, left); | |
363 | if (len == 0) { | |
364 | return 1; | |
365 | } | |
366 | pos += len; | |
367 | left -= len; | |
368 | } | |
369 | /* terminate list */ | |
370 | eeprom_update_byte((uint8_t *) pos, 0); | |
371 | crc = env_crc(off + offsetof(env_t, data)); | |
372 | eeprom_update_word((uint16_t *) off + offsetof(env_t, crc), crc); | |
7e24905c | 373 | eeprom_update_byte((uint8_t *) off + offsetof(env_t, flags), |
323398b1 L |
374 | ACTIVE_FLAG); |
375 | ||
376 | if (rc == 0) { | |
7e24905c | 377 | eeprom_update_byte((uint8_t *) off_red + offsetof(env_t, flags), |
323398b1 L |
378 | OBSOLETE_FLAG); |
379 | env_valid = (env_valid == 2) ? 1 : 2; | |
323398b1 | 380 | } |
7e24905c | 381 | |
d684c216 L |
382 | return rc; |
383 | } | |
384 | ||
d684c216 | 385 | |
1da3acc4 L |
386 | static |
387 | int env_item_print(env_item_t *ep) | |
d684c216 | 388 | { |
1da3acc4 | 389 | int len; |
55027f3b L |
390 | char *ev = ep->envvar; |
391 | ||
392 | len = printf_P(PSTR("%s="), ev); | |
393 | len += printf_P(PSTR("%s\n"), ev + len); | |
1da3acc4 L |
394 | |
395 | return len; | |
7e24905c | 396 | } |
323398b1 L |
397 | |
398 | ||
d684c216 L |
399 | /* |
400 | * Command interface: print one or all environment variables | |
401 | * | |
402 | * Returns -1 in case of error, or length of printed string | |
403 | */ | |
7e24905c | 404 | static |
fc30b18e | 405 | int env_print(const MEMX char *name) |
d684c216 L |
406 | { |
407 | int len = -1; | |
408 | ||
409 | if (name) { /* print a single name */ | |
7e24905c | 410 | |
d684c216 L |
411 | env_item_t *ep = envlist_search(name); |
412 | if (ep != NULL) | |
413 | len = env_item_print(ep); | |
414 | ||
415 | } else { /* print whole list */ | |
416 | len = 0; | |
417 | for (int i = 0 ; i < entrycount; i++) { | |
418 | len += env_item_print(&env_list[i]); | |
419 | } | |
420 | } | |
421 | return len; | |
422 | } | |
423 | ||
1da3acc4 | 424 | |
72f58822 L |
425 | /** |
426 | * Set or delete environment variable | |
427 | * | |
d684c216 L |
428 | * Set a new environment variable, |
429 | * or replace or delete an existing one. | |
72f58822 L |
430 | * |
431 | * @param flag (not used) | |
432 | * @param argc | |
433 | * @param argv[1] Environment variable to set or delete | |
434 | * if no more args | |
435 | * @param argv[2] ... Value to set it to | |
436 | * | |
437 | * @return 0 if ok, 1 on error | |
d684c216 | 438 | */ |
1da3acc4 | 439 | static |
d0581f88 | 440 | command_ret_t _do_env_set(int flag, int argc, char * const argv[]) |
d684c216 | 441 | { |
72f58822 | 442 | int i, len; |
55027f3b | 443 | char *name, *value, *valp, *p; |
d684c216 L |
444 | env_item_t e, *ep; |
445 | ||
446 | (void) flag; | |
447 | debug("Initial value for argc=%d\n", argc); | |
448 | ||
449 | name = argv[1]; | |
450 | value = argv[2]; | |
451 | ||
452 | if (strchr(name, '=')) { | |
453 | printf_P(PSTR("## Error: illegal character '='" | |
454 | "in variable name \"%s\"\n"), name); | |
d0581f88 | 455 | return CMD_RET_FAILURE; |
d684c216 | 456 | } |
55027f3b L |
457 | len = strlen(name); |
458 | if (len > CONFIG_SYS_ENV_NAMELEN) { | |
d684c216 L |
459 | printf_P(PSTR("## Error: Variable name \"%s\" too long. " |
460 | "(max %d characters)\n"), name, CONFIG_SYS_ENV_NAMELEN); | |
d0581f88 | 461 | return CMD_RET_FAILURE; |
d684c216 L |
462 | } |
463 | /* | |
464 | env_id++; | |
465 | */ | |
466 | /* Delete only ? */ | |
467 | if (argc < 3 || argv[2] == NULL) { | |
468 | int rc = envlist_delete(name); | |
d0581f88 | 469 | return rc ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
d684c216 L |
470 | } |
471 | ||
472 | /* | |
473 | * Insert / replace new value | |
474 | */ | |
55027f3b | 475 | for (i = 2, len += 1; i < argc; ++i) |
d684c216 L |
476 | len += strlen(argv[i]) + 1; |
477 | ||
478 | value = xmalloc(len); | |
479 | if (value == NULL) { | |
480 | printf_P(PSTR("## Can't malloc %d bytes\n"), len); | |
d0581f88 | 481 | return CMD_RET_FAILURE; |
d684c216 | 482 | } |
55027f3b L |
483 | strcpy(value, name); |
484 | valp = value + strlen(name) + 1; | |
485 | for (i = 2, p = valp; i < argc; ++i) { | |
d684c216 L |
486 | char *v = argv[i]; |
487 | ||
55027f3b | 488 | while ((*p++ = *v++) != '\0') |
d684c216 | 489 | ; |
55027f3b | 490 | *(p - 1) = ' '; |
d684c216 | 491 | } |
55027f3b L |
492 | if (p != valp) |
493 | *--p = '\0'; | |
d684c216 | 494 | |
55027f3b | 495 | e.envvar = value; |
d684c216 L |
496 | ep = envlist_enter(&e); |
497 | if (!ep) { | |
498 | printf_P(PSTR("## Error inserting \"%s\" variable.\n"), | |
499 | name); | |
d0581f88 | 500 | return CMD_RET_FAILURE; |
d684c216 L |
501 | } |
502 | ||
d0581f88 | 503 | return CMD_RET_SUCCESS; |
d684c216 L |
504 | } |
505 | ||
72f58822 L |
506 | /** |
507 | * Set an environment variable | |
508 | * | |
509 | * @param varname Environment variable to set | |
510 | * @param varvalue Value to set it to | |
511 | * @return 0 if ok, 1 on error | |
512 | */ | |
1da3acc4 | 513 | static |
d684c216 L |
514 | int setenv(const char *varname, const char *varvalue) |
515 | { | |
516 | const char * const argv[3] = { NULL, varname, varvalue }; | |
517 | int argc = 3; | |
518 | ||
519 | if (varvalue == NULL || varvalue[0] == '\0') | |
520 | --argc; | |
7e24905c | 521 | |
d0581f88 | 522 | return (int) _do_env_set(0, argc, (char * const *)argv); |
d684c216 L |
523 | } |
524 | ||
d684c216 L |
525 | /** |
526 | * Set an environment variable to an integer value | |
527 | * | |
f76ca346 L |
528 | * @param name Environment variable to set |
529 | * @param value Value to set it to | |
530 | * @param radix Base | |
d684c216 L |
531 | * @return 0 if ok, 1 on error |
532 | */ | |
f76ca346 L |
533 | static |
534 | int setenv_intval(const MEMX char *name, unsigned long value, int radix) | |
d684c216 | 535 | { |
f76ca346 | 536 | char buf[11]; |
d684c216 | 537 | |
f76ca346 | 538 | ultoa(value, buf, radix); |
d684c216 | 539 | |
f76ca346 L |
540 | return setenv(name, buf); |
541 | } | |
d684c216 L |
542 | |
543 | /** | |
f76ca346 | 544 | * Set an environment variable to a decimal integer value |
d684c216 | 545 | * |
f76ca346 L |
546 | * @param name Environment variable to set |
547 | * @param value Value to set it to | |
d684c216 L |
548 | * @return 0 if ok, 1 on error |
549 | */ | |
f76ca346 | 550 | int setenv_ulong(const MEMX char *name, unsigned long value) |
d684c216 | 551 | { |
f76ca346 L |
552 | return setenv_intval(name, value, 10); |
553 | } | |
554 | ||
d684c216 | 555 | |
f76ca346 L |
556 | /** |
557 | * Set an environment variable to a value in hex | |
558 | * | |
559 | * @param name Environment variable to set | |
560 | * @param value Value to set it to | |
561 | * @return 0 if ok, 1 on error | |
562 | */ | |
563 | int setenv_hex(const MEMX char *name, unsigned long value) | |
564 | { | |
565 | return setenv_intval(name, value, 16); | |
d684c216 L |
566 | } |
567 | ||
35e9ec0c | 568 | |
72f58822 | 569 | /** |
35e9ec0c | 570 | * Decode the integer value of an environment variable and return it. |
72f58822 | 571 | * |
35e9ec0c L |
572 | * @param name Name of environemnt variable |
573 | * @param base Number base to use (normally 10, or 16 for hex) | |
574 | * @param default_val Default value to return if the variable is not | |
575 | * found | |
576 | * @return the decoded value, or default_val if not found | |
72f58822 | 577 | */ |
fc30b18e | 578 | unsigned long getenv_ulong(const MEMX char *name, int base, unsigned long default_val) |
d684c216 | 579 | { |
d684c216 | 580 | unsigned long value; |
35e9ec0c L |
581 | char *vp, *endp; |
582 | ||
583 | env_item_t *ep = envlist_search(name); | |
d684c216 | 584 | |
35e9ec0c | 585 | if (ep != NULL ) { |
55027f3b L |
586 | vp = ep->envvar + strlen(ep->envvar) +1; |
587 | value = strtoul(vp, &endp, base); | |
588 | if (endp != vp) | |
589 | return value; | |
35e9ec0c | 590 | } |
d684c216 | 591 | |
35e9ec0c | 592 | return default_val; |
d684c216 L |
593 | } |
594 | ||
35e9ec0c | 595 | |
f76ca346 L |
596 | command_ret_t do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
597 | { | |
598 | command_ret_t rc = CMD_RET_SUCCESS; | |
599 | ||
600 | (void) cmdtp; (void) flag; | |
601 | ||
602 | if (argc == 1) { | |
603 | /* print all env vars */ | |
604 | int size = env_print(NULL); | |
605 | if (size < 0) | |
606 | return CMD_RET_FAILURE; | |
607 | printf_P(PSTR("\nEnvironment size: %d/%d bytes\n"), | |
608 | size, ENV_SIZE); | |
609 | return CMD_RET_SUCCESS; | |
610 | } | |
611 | ||
612 | /* print selected env vars */ | |
613 | for (int i = 1; i < argc; ++i) { | |
614 | int rc = env_print(argv[i]); | |
615 | if (rc < 0) { | |
616 | printf_P(PSTR("## Error: \"%s\" not defined\n"), argv[i]); | |
617 | rc = CMD_RET_FAILURE; | |
618 | } | |
619 | } | |
620 | ||
621 | return rc; | |
622 | } | |
623 | ||
624 | ||
d0581f88 | 625 | command_ret_t do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
d684c216 L |
626 | { |
627 | (void) cmdtp; | |
628 | ||
629 | if (argc < 2) | |
630 | return CMD_RET_USAGE; | |
631 | ||
632 | return _do_env_set(flag, argc, argv); | |
633 | } | |
634 | ||
635 | ||
7e24905c L |
636 | command_ret_t do_env_default(cmd_tbl_t *cmdtp, int flag, |
637 | int argc, char * const argv[]) | |
638 | { | |
639 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
640 | ||
55027f3b L |
641 | uint8_t tmp = env_valid; |
642 | env_valid = 0; | |
643 | ||
7e24905c | 644 | /* Reset the whole environment */ |
55027f3b | 645 | printf_P(PSTR("## Resetting to default environment\n")); |
7e24905c L |
646 | envlist_import(ENVLIST_DELETE); |
647 | ||
55027f3b L |
648 | env_valid = tmp; |
649 | ||
7e24905c L |
650 | return CMD_RET_SUCCESS; |
651 | } | |
652 | ||
55027f3b | 653 | |
d0581f88 | 654 | command_ret_t do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
323398b1 L |
655 | { |
656 | (void) cmdtp; (void) flag; (void) argc; (void) argv; | |
657 | ||
658 | printf_P(PSTR("Saving Environment ...\n")); | |
d0581f88 | 659 | return saveenv() ? CMD_RET_FAILURE : CMD_RET_SUCCESS; |
323398b1 L |
660 | } |
661 | ||
55027f3b | 662 | |
7e24905c | 663 | #if defined(CONFIG_AUTO_COMPLETE) |
d684c216 L |
664 | int env_complete(char *var, int maxv, char *cmdv[], int bufsz, char *buf) |
665 | { | |
666 | ENTRY *match; | |
667 | int found, idx; | |
668 | ||
669 | idx = 0; | |
670 | found = 0; | |
671 | cmdv[0] = NULL; | |
672 | ||
673 | while ((idx = hmatch_r(var, idx, &match, &env_htab))) { | |
674 | int vallen = strlen(match->key) + 1; | |
675 | ||
676 | if (found >= maxv - 2 || bufsz < vallen) | |
677 | break; | |
678 | ||
679 | cmdv[found++] = buf; | |
680 | memcpy(buf, match->key, vallen); | |
681 | buf += vallen; | |
682 | bufsz -= vallen; | |
683 | } | |
684 | ||
685 | qsort(cmdv, found, sizeof(cmdv[0]), strcmp_compar); | |
686 | ||
687 | if (idx) | |
688 | cmdv[found++] = "..."; | |
689 | ||
690 | cmdv[found] = NULL; | |
691 | return found; | |
692 | } | |
693 | #endif |