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Commit | Line | Data |
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8b096237 PW |
1 | /* |
2 | * cmd_gpt.c -- GPT (GUID Partition Table) handling command | |
3 | * | |
bbb9ffac LM |
4 | * Copyright (C) 2015 |
5 | * Lukasz Majewski <l.majewski@majess.pl> | |
6 | * | |
8b096237 PW |
7 | * Copyright (C) 2012 Samsung Electronics |
8 | * author: Lukasz Majewski <l.majewski@samsung.com> | |
9 | * author: Piotr Wilczek <p.wilczek@samsung.com> | |
10 | * | |
1a459660 | 11 | * SPDX-License-Identifier: GPL-2.0+ |
8b096237 PW |
12 | */ |
13 | ||
14 | #include <common.h> | |
15 | #include <malloc.h> | |
16 | #include <command.h> | |
8b096237 PW |
17 | #include <part_efi.h> |
18 | #include <exports.h> | |
19 | #include <linux/ctype.h> | |
3e34cf7b | 20 | #include <div64.h> |
bbb9ffac | 21 | #include <memalign.h> |
09a49930 | 22 | #include <linux/compat.h> |
203f9b48 AC |
23 | #include <linux/sizes.h> |
24 | #include <stdlib.h> | |
09a49930 AC |
25 | |
26 | static LIST_HEAD(disk_partitions); | |
8b096237 | 27 | |
8b096237 PW |
28 | /** |
29 | * extract_env(): Expand env name from string format '&{env_name}' | |
30 | * and return pointer to the env (if the env is set) | |
31 | * | |
32 | * @param str - pointer to string | |
33 | * @param env - pointer to pointer to extracted env | |
34 | * | |
35 | * @return - zero on successful expand and env is set | |
36 | */ | |
39206382 | 37 | static int extract_env(const char *str, char **env) |
8b096237 | 38 | { |
39206382 | 39 | int ret = -1; |
8b096237 | 40 | char *e, *s; |
39206382 PM |
41 | #ifdef CONFIG_RANDOM_UUID |
42 | char uuid_str[UUID_STR_LEN + 1]; | |
43 | #endif | |
8b096237 PW |
44 | |
45 | if (!str || strlen(str) < 4) | |
46 | return -1; | |
47 | ||
39206382 PM |
48 | if (!((strncmp(str, "${", 2) == 0) && (str[strlen(str) - 1] == '}'))) |
49 | return -1; | |
50 | ||
51 | s = strdup(str); | |
52 | if (s == NULL) | |
53 | return -1; | |
54 | ||
55 | memset(s + strlen(s) - 1, '\0', 1); | |
56 | memmove(s, s + 2, strlen(s) - 1); | |
57 | ||
00caae6d | 58 | e = env_get(s); |
39206382 PM |
59 | if (e == NULL) { |
60 | #ifdef CONFIG_RANDOM_UUID | |
61 | debug("%s unset. ", str); | |
9da52f8f | 62 | gen_rand_uuid_str(uuid_str, UUID_STR_FORMAT_GUID); |
382bee57 | 63 | env_set(s, uuid_str); |
39206382 | 64 | |
00caae6d | 65 | e = env_get(s); |
39206382 PM |
66 | if (e) { |
67 | debug("Set to random.\n"); | |
68 | ret = 0; | |
69 | } else { | |
70 | debug("Can't get random UUID.\n"); | |
8b096237 | 71 | } |
39206382 PM |
72 | #else |
73 | debug("%s unset.\n", str); | |
74 | #endif | |
75 | } else { | |
76 | debug("%s get from environment.\n", str); | |
77 | ret = 0; | |
8b096237 PW |
78 | } |
79 | ||
39206382 PM |
80 | *env = e; |
81 | free(s); | |
82 | ||
83 | return ret; | |
8b096237 PW |
84 | } |
85 | ||
86 | /** | |
87 | * extract_val(): Extract value from a key=value pair list (comma separated). | |
88 | * Only value for the given key is returend. | |
89 | * Function allocates memory for the value, remember to free! | |
90 | * | |
91 | * @param str - pointer to string with key=values pairs | |
92 | * @param key - pointer to the key to search for | |
93 | * | |
94 | * @return - pointer to allocated string with the value | |
95 | */ | |
96 | static char *extract_val(const char *str, const char *key) | |
97 | { | |
98 | char *v, *k; | |
99 | char *s, *strcopy; | |
100 | char *new = NULL; | |
101 | ||
102 | strcopy = strdup(str); | |
103 | if (strcopy == NULL) | |
104 | return NULL; | |
105 | ||
106 | s = strcopy; | |
107 | while (s) { | |
108 | v = strsep(&s, ","); | |
109 | if (!v) | |
110 | break; | |
111 | k = strsep(&v, "="); | |
112 | if (!k) | |
113 | break; | |
114 | if (strcmp(k, key) == 0) { | |
115 | new = strdup(v); | |
116 | break; | |
117 | } | |
118 | } | |
119 | ||
120 | free(strcopy); | |
121 | ||
122 | return new; | |
123 | } | |
124 | ||
cfdaf4ca PD |
125 | /** |
126 | * found_key(): Found key without value in parameter list (comma separated). | |
127 | * | |
128 | * @param str - pointer to string with key | |
129 | * @param key - pointer to the key to search for | |
130 | * | |
131 | * @return - true on found key | |
132 | */ | |
133 | static bool found_key(const char *str, const char *key) | |
134 | { | |
135 | char *k; | |
136 | char *s, *strcopy; | |
137 | bool result = false; | |
138 | ||
139 | strcopy = strdup(str); | |
140 | if (!strcopy) | |
141 | return NULL; | |
142 | ||
143 | s = strcopy; | |
144 | while (s) { | |
145 | k = strsep(&s, ","); | |
146 | if (!k) | |
147 | break; | |
148 | if (strcmp(k, key) == 0) { | |
149 | result = true; | |
150 | break; | |
151 | } | |
152 | } | |
153 | ||
154 | free(strcopy); | |
155 | ||
156 | return result; | |
157 | } | |
158 | ||
2fcaa413 AC |
159 | static int calc_parts_list_len(int numparts) |
160 | { | |
161 | int partlistlen = UUID_STR_LEN + 1 + strlen("uuid_disk="); | |
162 | /* for the comma */ | |
163 | partlistlen++; | |
164 | ||
165 | /* per-partition additions; numparts starts at 1, so this should be correct */ | |
166 | partlistlen += numparts * (strlen("name=,") + PART_NAME_LEN + 1); | |
167 | /* see part.h for definition of struct disk_partition */ | |
168 | partlistlen += numparts * (strlen("start=MiB,") + sizeof(lbaint_t) + 1); | |
169 | partlistlen += numparts * (strlen("size=MiB,") + sizeof(lbaint_t) + 1); | |
170 | partlistlen += numparts * (strlen("uuid=;") + UUID_STR_LEN + 1); | |
171 | /* for the terminating null */ | |
172 | partlistlen++; | |
173 | debug("Length of partitions_list is %d for %d partitions\n", partlistlen, | |
174 | numparts); | |
175 | return partlistlen; | |
176 | } | |
177 | ||
09a49930 AC |
178 | #ifdef CONFIG_CMD_GPT_RENAME |
179 | static void del_gpt_info(void) | |
180 | { | |
181 | struct list_head *pos = &disk_partitions; | |
182 | struct disk_part *curr; | |
183 | while (!list_empty(pos)) { | |
184 | curr = list_entry(pos->next, struct disk_part, list); | |
185 | list_del(pos->next); | |
186 | free(curr); | |
187 | } | |
188 | } | |
189 | ||
190 | static struct disk_part *allocate_disk_part(disk_partition_t *info, int partnum) | |
191 | { | |
192 | struct disk_part *newpart; | |
193 | newpart = malloc(sizeof(*newpart)); | |
194 | if (!newpart) | |
195 | return ERR_PTR(-ENOMEM); | |
196 | memset(newpart, '\0', sizeof(newpart)); | |
197 | ||
198 | newpart->gpt_part_info.start = info->start; | |
199 | newpart->gpt_part_info.size = info->size; | |
200 | newpart->gpt_part_info.blksz = info->blksz; | |
201 | strncpy((char *)newpart->gpt_part_info.name, (const char *)info->name, | |
202 | PART_NAME_LEN); | |
203 | newpart->gpt_part_info.name[PART_NAME_LEN - 1] = '\0'; | |
204 | strncpy((char *)newpart->gpt_part_info.type, (const char *)info->type, | |
205 | PART_TYPE_LEN); | |
206 | newpart->gpt_part_info.type[PART_TYPE_LEN - 1] = '\0'; | |
207 | newpart->gpt_part_info.bootable = info->bootable; | |
208 | #ifdef CONFIG_PARTITION_UUIDS | |
209 | strncpy(newpart->gpt_part_info.uuid, (const char *)info->uuid, | |
210 | UUID_STR_LEN); | |
211 | /* UUID_STR_LEN is correct, as uuid[]'s length is UUID_STR_LEN+1 chars */ | |
212 | newpart->gpt_part_info.uuid[UUID_STR_LEN] = '\0'; | |
213 | #endif | |
214 | newpart->partnum = partnum; | |
215 | ||
216 | return newpart; | |
217 | } | |
218 | ||
203f9b48 AC |
219 | static void prettyprint_part_size(char *sizestr, lbaint_t partsize, |
220 | lbaint_t blksize) | |
221 | { | |
222 | unsigned long long partbytes, partmegabytes; | |
223 | ||
224 | partbytes = partsize * blksize; | |
225 | partmegabytes = lldiv(partbytes, SZ_1M); | |
226 | snprintf(sizestr, 16, "%lluMiB", partmegabytes); | |
227 | } | |
228 | ||
09a49930 AC |
229 | static void print_gpt_info(void) |
230 | { | |
231 | struct list_head *pos; | |
232 | struct disk_part *curr; | |
203f9b48 AC |
233 | char partstartstr[16]; |
234 | char partsizestr[16]; | |
09a49930 AC |
235 | |
236 | list_for_each(pos, &disk_partitions) { | |
237 | curr = list_entry(pos, struct disk_part, list); | |
203f9b48 AC |
238 | prettyprint_part_size(partstartstr, curr->gpt_part_info.start, |
239 | curr->gpt_part_info.blksz); | |
240 | prettyprint_part_size(partsizestr, curr->gpt_part_info.size, | |
241 | curr->gpt_part_info.blksz); | |
242 | ||
09a49930 | 243 | printf("Partition %d:\n", curr->partnum); |
203f9b48 | 244 | printf("Start %s, size %s\n", partstartstr, partsizestr); |
09a49930 AC |
245 | printf("Block size %lu, name %s\n", curr->gpt_part_info.blksz, |
246 | curr->gpt_part_info.name); | |
247 | printf("Type %s, bootable %d\n", curr->gpt_part_info.type, | |
248 | curr->gpt_part_info.bootable); | |
249 | #ifdef CONFIG_PARTITION_UUIDS | |
250 | printf("UUID %s\n", curr->gpt_part_info.uuid); | |
251 | #endif | |
252 | printf("\n"); | |
253 | } | |
254 | } | |
255 | ||
203f9b48 AC |
256 | /* |
257 | * create the string that upstream 'gpt write' command will accept as an | |
258 | * argument | |
259 | * | |
260 | * From doc/README.gpt, Format of partitions layout: | |
261 | * "uuid_disk=...;name=u-boot,size=60MiB,uuid=...; | |
262 | * name=kernel,size=60MiB,uuid=...;" | |
263 | * The fields 'name' and 'size' are mandatory for every partition. | |
264 | * The field 'start' is optional. The fields 'uuid' and 'uuid_disk' | |
265 | * are optional if CONFIG_RANDOM_UUID is enabled. | |
266 | */ | |
267 | static int create_gpt_partitions_list(int numparts, const char *guid, | |
268 | char *partitions_list) | |
269 | { | |
270 | struct list_head *pos; | |
271 | struct disk_part *curr; | |
272 | char partstr[PART_NAME_LEN + 1]; | |
273 | ||
274 | if (!partitions_list) | |
275 | return -EINVAL; | |
276 | ||
277 | strcpy(partitions_list, "uuid_disk="); | |
278 | strncat(partitions_list, guid, UUID_STR_LEN + 1); | |
279 | strcat(partitions_list, ";"); | |
280 | ||
281 | list_for_each(pos, &disk_partitions) { | |
282 | curr = list_entry(pos, struct disk_part, list); | |
283 | strcat(partitions_list, "name="); | |
284 | strncat(partitions_list, (const char *)curr->gpt_part_info.name, | |
285 | PART_NAME_LEN + 1); | |
286 | strcat(partitions_list, ",start="); | |
287 | prettyprint_part_size(partstr, (unsigned long)curr->gpt_part_info.start, | |
288 | (unsigned long) curr->gpt_part_info.blksz); | |
289 | /* one extra byte for NULL */ | |
290 | strncat(partitions_list, partstr, PART_NAME_LEN + 1); | |
291 | strcat(partitions_list, ",size="); | |
292 | prettyprint_part_size(partstr, curr->gpt_part_info.size, | |
293 | curr->gpt_part_info.blksz); | |
294 | strncat(partitions_list, partstr, PART_NAME_LEN + 1); | |
295 | ||
296 | strcat(partitions_list, ",uuid="); | |
297 | strncat(partitions_list, curr->gpt_part_info.uuid, | |
298 | UUID_STR_LEN + 1); | |
299 | strcat(partitions_list, ";"); | |
300 | } | |
301 | return 0; | |
302 | } | |
303 | ||
09a49930 AC |
304 | /* |
305 | * read partition info into disk_partitions list where | |
306 | * it can be printed or modified | |
307 | */ | |
308 | static int get_gpt_info(struct blk_desc *dev_desc) | |
309 | { | |
310 | /* start partition numbering at 1, as U-Boot does */ | |
311 | int valid_parts = 0, p, ret; | |
312 | disk_partition_t info; | |
313 | struct disk_part *new_disk_part; | |
314 | ||
203f9b48 AC |
315 | /* |
316 | * Always re-read partition info from device, in case | |
317 | * it has changed | |
318 | */ | |
319 | INIT_LIST_HEAD(&disk_partitions); | |
09a49930 AC |
320 | |
321 | for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) { | |
322 | ret = part_get_info(dev_desc, p, &info); | |
323 | if (ret) | |
324 | continue; | |
325 | ||
326 | /* Add 1 here because counter is zero-based but p1 is | |
327 | the first partition */ | |
328 | new_disk_part = allocate_disk_part(&info, valid_parts+1); | |
329 | if (IS_ERR(new_disk_part)) | |
330 | goto out; | |
331 | ||
332 | list_add_tail(&new_disk_part->list, &disk_partitions); | |
333 | valid_parts++; | |
334 | } | |
335 | if (valid_parts == 0) { | |
336 | printf("** No valid partitions found **\n"); | |
337 | goto out; | |
338 | } | |
339 | return valid_parts; | |
340 | out: | |
341 | if (valid_parts >= 1) | |
342 | del_gpt_info(); | |
343 | return -ENODEV; | |
344 | } | |
345 | ||
346 | /* a wrapper to test get_gpt_info */ | |
347 | static int do_get_gpt_info(struct blk_desc *dev_desc) | |
348 | { | |
349 | int ret; | |
350 | ||
351 | ret = get_gpt_info(dev_desc); | |
352 | if (ret > 0) { | |
353 | print_gpt_info(); | |
354 | del_gpt_info(); | |
355 | return 0; | |
356 | } | |
357 | return ret; | |
358 | } | |
359 | #endif | |
360 | ||
8b096237 PW |
361 | /** |
362 | * set_gpt_info(): Fill partition information from string | |
363 | * function allocates memory, remember to free! | |
364 | * | |
365 | * @param dev_desc - pointer block device descriptor | |
366 | * @param str_part - pointer to string with partition information | |
367 | * @param str_disk_guid - pointer to pointer to allocated string with disk guid | |
368 | * @param partitions - pointer to pointer to allocated partitions array | |
369 | * @param parts_count - number of partitions | |
370 | * | |
371 | * @return - zero on success, otherwise error | |
372 | * | |
373 | */ | |
4101f687 | 374 | static int set_gpt_info(struct blk_desc *dev_desc, |
8b096237 PW |
375 | const char *str_part, |
376 | char **str_disk_guid, | |
377 | disk_partition_t **partitions, | |
378 | u8 *parts_count) | |
379 | { | |
380 | char *tok, *str, *s; | |
381 | int i; | |
382 | char *val, *p; | |
383 | int p_count; | |
384 | disk_partition_t *parts; | |
385 | int errno = 0; | |
3e34cf7b | 386 | uint64_t size_ll, start_ll; |
66636235 | 387 | lbaint_t offset = 0; |
2fcaa413 | 388 | int max_str_part = calc_parts_list_len(MAX_SEARCH_PARTITIONS); |
8b096237 | 389 | |
619f0fdf | 390 | debug("%s: lba num: 0x%x %d\n", __func__, |
8b096237 PW |
391 | (unsigned int)dev_desc->lba, (unsigned int)dev_desc->lba); |
392 | ||
393 | if (str_part == NULL) | |
394 | return -1; | |
395 | ||
396 | str = strdup(str_part); | |
203f9b48 AC |
397 | if (str == NULL) |
398 | return -ENOMEM; | |
8b096237 PW |
399 | |
400 | /* extract disk guid */ | |
401 | s = str; | |
0c7e8d13 | 402 | val = extract_val(str, "uuid_disk"); |
8b096237 | 403 | if (!val) { |
0c7e8d13 RH |
404 | #ifdef CONFIG_RANDOM_UUID |
405 | *str_disk_guid = malloc(UUID_STR_LEN + 1); | |
2fcaa413 AC |
406 | if (str_disk_guid == NULL) |
407 | return -ENOMEM; | |
0c7e8d13 RH |
408 | gen_rand_uuid_str(*str_disk_guid, UUID_STR_FORMAT_STD); |
409 | #else | |
8b096237 PW |
410 | free(str); |
411 | return -2; | |
0c7e8d13 RH |
412 | #endif |
413 | } else { | |
414 | val = strsep(&val, ";"); | |
415 | if (extract_env(val, &p)) | |
416 | p = val; | |
417 | *str_disk_guid = strdup(p); | |
418 | free(val); | |
419 | /* Move s to first partition */ | |
420 | strsep(&s, ";"); | |
8b096237 | 421 | } |
2fcaa413 AC |
422 | if (s == NULL) { |
423 | printf("Error: is the partitions string NULL-terminated?\n"); | |
424 | return -EINVAL; | |
425 | } | |
426 | if (strnlen(s, max_str_part) == 0) | |
8b096237 PW |
427 | return -3; |
428 | ||
2fcaa413 | 429 | i = strnlen(s, max_str_part) - 1; |
8b096237 PW |
430 | if (s[i] == ';') |
431 | s[i] = '\0'; | |
432 | ||
433 | /* calculate expected number of partitions */ | |
434 | p_count = 1; | |
435 | p = s; | |
436 | while (*p) { | |
437 | if (*p++ == ';') | |
438 | p_count++; | |
439 | } | |
440 | ||
441 | /* allocate memory for partitions */ | |
442 | parts = calloc(sizeof(disk_partition_t), p_count); | |
2fcaa413 AC |
443 | if (parts == NULL) |
444 | return -ENOMEM; | |
8b096237 | 445 | |
1f8b546f | 446 | /* retrieve partitions data from string */ |
8b096237 PW |
447 | for (i = 0; i < p_count; i++) { |
448 | tok = strsep(&s, ";"); | |
449 | ||
450 | if (tok == NULL) | |
451 | break; | |
452 | ||
453 | /* uuid */ | |
454 | val = extract_val(tok, "uuid"); | |
0c7e8d13 RH |
455 | if (!val) { |
456 | /* 'uuid' is optional if random uuid's are enabled */ | |
457 | #ifdef CONFIG_RANDOM_UUID | |
458 | gen_rand_uuid_str(parts[i].uuid, UUID_STR_FORMAT_STD); | |
459 | #else | |
8b096237 PW |
460 | errno = -4; |
461 | goto err; | |
0c7e8d13 RH |
462 | #endif |
463 | } else { | |
464 | if (extract_env(val, &p)) | |
465 | p = val; | |
2fcaa413 | 466 | if (strnlen(p, max_str_part) >= sizeof(parts[i].uuid)) { |
0c7e8d13 RH |
467 | printf("Wrong uuid format for partition %d\n", i); |
468 | errno = -4; | |
469 | goto err; | |
470 | } | |
2fcaa413 | 471 | strncpy((char *)parts[i].uuid, p, max_str_part); |
0c7e8d13 | 472 | free(val); |
8b096237 | 473 | } |
7561b258 PD |
474 | #ifdef CONFIG_PARTITION_TYPE_GUID |
475 | /* guid */ | |
476 | val = extract_val(tok, "type"); | |
477 | if (val) { | |
478 | /* 'type' is optional */ | |
479 | if (extract_env(val, &p)) | |
480 | p = val; | |
2fcaa413 | 481 | if (strnlen(p, max_str_part) >= sizeof(parts[i].type_guid)) { |
7561b258 PD |
482 | printf("Wrong type guid format for partition %d\n", |
483 | i); | |
484 | errno = -4; | |
485 | goto err; | |
486 | } | |
2fcaa413 | 487 | strncpy((char *)parts[i].type_guid, p, max_str_part); |
7561b258 PD |
488 | free(val); |
489 | } | |
490 | #endif | |
8b096237 PW |
491 | /* name */ |
492 | val = extract_val(tok, "name"); | |
493 | if (!val) { /* name is mandatory */ | |
494 | errno = -4; | |
495 | goto err; | |
496 | } | |
497 | if (extract_env(val, &p)) | |
498 | p = val; | |
2fcaa413 | 499 | if (strnlen(p, max_str_part) >= sizeof(parts[i].name)) { |
8b096237 PW |
500 | errno = -4; |
501 | goto err; | |
502 | } | |
2fcaa413 | 503 | strncpy((char *)parts[i].name, p, max_str_part); |
8b096237 PW |
504 | free(val); |
505 | ||
506 | /* size */ | |
507 | val = extract_val(tok, "size"); | |
508 | if (!val) { /* 'size' is mandatory */ | |
509 | errno = -4; | |
510 | goto err; | |
511 | } | |
512 | if (extract_env(val, &p)) | |
513 | p = val; | |
66636235 | 514 | if ((strcmp(p, "-") == 0)) { |
c2fdd345 KY |
515 | /* Let part efi module to auto extend the size */ |
516 | parts[i].size = 0; | |
66636235 MT |
517 | } else { |
518 | size_ll = ustrtoull(p, &p, 0); | |
519 | parts[i].size = lldiv(size_ll, dev_desc->blksz); | |
520 | } | |
521 | ||
8b096237 PW |
522 | free(val); |
523 | ||
524 | /* start address */ | |
525 | val = extract_val(tok, "start"); | |
526 | if (val) { /* start address is optional */ | |
527 | if (extract_env(val, &p)) | |
528 | p = val; | |
3e34cf7b PW |
529 | start_ll = ustrtoull(p, &p, 0); |
530 | parts[i].start = lldiv(start_ll, dev_desc->blksz); | |
8b096237 PW |
531 | free(val); |
532 | } | |
cfdaf4ca | 533 | |
66636235 MT |
534 | offset += parts[i].size + parts[i].start; |
535 | ||
cfdaf4ca PD |
536 | /* bootable */ |
537 | if (found_key(tok, "bootable")) | |
538 | parts[i].bootable = 1; | |
8b096237 PW |
539 | } |
540 | ||
541 | *parts_count = p_count; | |
542 | *partitions = parts; | |
543 | free(str); | |
544 | ||
545 | return 0; | |
546 | err: | |
547 | free(str); | |
548 | free(*str_disk_guid); | |
549 | free(parts); | |
550 | ||
551 | return errno; | |
552 | } | |
553 | ||
4101f687 | 554 | static int gpt_default(struct blk_desc *blk_dev_desc, const char *str_part) |
8b096237 PW |
555 | { |
556 | int ret; | |
557 | char *str_disk_guid; | |
558 | u8 part_count = 0; | |
559 | disk_partition_t *partitions = NULL; | |
560 | ||
8b096237 | 561 | /* fill partitions */ |
619f0fdf | 562 | ret = set_gpt_info(blk_dev_desc, str_part, |
8b096237 PW |
563 | &str_disk_guid, &partitions, &part_count); |
564 | if (ret) { | |
565 | if (ret == -1) | |
566 | printf("No partition list provided\n"); | |
567 | if (ret == -2) | |
568 | printf("Missing disk guid\n"); | |
569 | if ((ret == -3) || (ret == -4)) | |
570 | printf("Partition list incomplete\n"); | |
571 | return -1; | |
572 | } | |
573 | ||
574 | /* save partitions layout to disk */ | |
a150e6c9 | 575 | ret = gpt_restore(blk_dev_desc, str_disk_guid, partitions, part_count); |
8b096237 PW |
576 | free(str_disk_guid); |
577 | free(partitions); | |
578 | ||
a150e6c9 | 579 | return ret; |
8b096237 PW |
580 | } |
581 | ||
4101f687 | 582 | static int gpt_verify(struct blk_desc *blk_dev_desc, const char *str_part) |
bbb9ffac LM |
583 | { |
584 | ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, | |
585 | blk_dev_desc->blksz); | |
586 | disk_partition_t *partitions = NULL; | |
587 | gpt_entry *gpt_pte = NULL; | |
588 | char *str_disk_guid; | |
589 | u8 part_count = 0; | |
590 | int ret = 0; | |
591 | ||
592 | /* fill partitions */ | |
593 | ret = set_gpt_info(blk_dev_desc, str_part, | |
594 | &str_disk_guid, &partitions, &part_count); | |
595 | if (ret) { | |
596 | if (ret == -1) { | |
597 | printf("No partition list provided - only basic check\n"); | |
598 | ret = gpt_verify_headers(blk_dev_desc, gpt_head, | |
599 | &gpt_pte); | |
600 | goto out; | |
601 | } | |
602 | if (ret == -2) | |
603 | printf("Missing disk guid\n"); | |
604 | if ((ret == -3) || (ret == -4)) | |
605 | printf("Partition list incomplete\n"); | |
606 | return -1; | |
607 | } | |
608 | ||
609 | /* Check partition layout with provided pattern */ | |
610 | ret = gpt_verify_partitions(blk_dev_desc, partitions, part_count, | |
611 | gpt_head, &gpt_pte); | |
612 | free(str_disk_guid); | |
613 | free(partitions); | |
614 | out: | |
615 | free(gpt_pte); | |
616 | return ret; | |
617 | } | |
618 | ||
73d6d18b AC |
619 | static int do_disk_guid(struct blk_desc *dev_desc, char * const namestr) |
620 | { | |
621 | int ret; | |
622 | char disk_guid[UUID_STR_LEN + 1]; | |
623 | ||
624 | ret = get_disk_guid(dev_desc, disk_guid); | |
625 | if (ret < 0) | |
626 | return CMD_RET_FAILURE; | |
627 | ||
628 | if (namestr) | |
382bee57 | 629 | env_set(namestr, disk_guid); |
73d6d18b AC |
630 | else |
631 | printf("%s\n", disk_guid); | |
632 | ||
633 | return ret; | |
634 | } | |
635 | ||
203f9b48 AC |
636 | #ifdef CONFIG_CMD_GPT_RENAME |
637 | static int do_rename_gpt_parts(struct blk_desc *dev_desc, char *subcomm, | |
638 | char *name1, char *name2) | |
639 | { | |
640 | struct list_head *pos; | |
641 | struct disk_part *curr; | |
642 | disk_partition_t *new_partitions = NULL; | |
643 | char disk_guid[UUID_STR_LEN + 1]; | |
644 | char *partitions_list, *str_disk_guid; | |
645 | u8 part_count = 0; | |
646 | int partlistlen, ret, numparts = 0, partnum, i = 1, ctr1 = 0, ctr2 = 0; | |
647 | ||
648 | if ((subcomm == NULL) || (name1 == NULL) || (name2 == NULL) || | |
649 | (strcmp(subcomm, "swap") && (strcmp(subcomm, "rename")))) | |
650 | return -EINVAL; | |
651 | ||
652 | ret = get_disk_guid(dev_desc, disk_guid); | |
653 | if (ret < 0) | |
654 | return ret; | |
655 | numparts = get_gpt_info(dev_desc); | |
656 | if (numparts <= 0) | |
657 | return numparts ? numparts : -ENODEV; | |
658 | ||
659 | partlistlen = calc_parts_list_len(numparts); | |
660 | partitions_list = malloc(partlistlen); | |
661 | if (partitions_list == NULL) | |
662 | return -ENOMEM; | |
663 | memset(partitions_list, '\0', partlistlen); | |
664 | ||
665 | ret = create_gpt_partitions_list(numparts, disk_guid, partitions_list); | |
666 | if (ret < 0) | |
667 | return ret; | |
668 | /* | |
669 | * Uncomment the following line to print a string that 'gpt write' | |
670 | * or 'gpt verify' will accept as input. | |
671 | */ | |
672 | debug("OLD partitions_list is %s with %u chars\n", partitions_list, | |
673 | (unsigned)strlen(partitions_list)); | |
674 | ||
675 | ret = set_gpt_info(dev_desc, partitions_list, &str_disk_guid, | |
676 | &new_partitions, &part_count); | |
677 | if (ret < 0) | |
678 | return ret; | |
679 | ||
680 | if (!strcmp(subcomm, "swap")) { | |
681 | if ((strlen(name1) > PART_NAME_LEN) || (strlen(name2) > PART_NAME_LEN)) { | |
682 | printf("Names longer than %d characters are truncated.\n", PART_NAME_LEN); | |
683 | return -EINVAL; | |
684 | } | |
685 | list_for_each(pos, &disk_partitions) { | |
686 | curr = list_entry(pos, struct disk_part, list); | |
687 | if (!strcmp((char *)curr->gpt_part_info.name, name1)) { | |
688 | strcpy((char *)curr->gpt_part_info.name, name2); | |
689 | ctr1++; | |
690 | } else if (!strcmp((char *)curr->gpt_part_info.name, name2)) { | |
691 | strcpy((char *)curr->gpt_part_info.name, name1); | |
692 | ctr2++; | |
693 | } | |
694 | } | |
695 | if ((ctr1 + ctr2 < 2) || (ctr1 != ctr2)) { | |
696 | printf("Cannot swap partition names except in pairs.\n"); | |
697 | return -EINVAL; | |
698 | } | |
699 | } else { /* rename */ | |
700 | if (strlen(name2) > PART_NAME_LEN) { | |
701 | printf("Names longer than %d characters are truncated.\n", PART_NAME_LEN); | |
702 | return -EINVAL; | |
703 | } | |
704 | partnum = (int)simple_strtol(name1, NULL, 10); | |
705 | if ((partnum < 0) || (partnum > numparts)) { | |
706 | printf("Illegal partition number %s\n", name1); | |
707 | return -EINVAL; | |
708 | } | |
709 | ret = part_get_info(dev_desc, partnum, new_partitions); | |
710 | if (ret < 0) | |
711 | return ret; | |
712 | ||
713 | /* U-Boot partition numbering starts at 1 */ | |
714 | list_for_each(pos, &disk_partitions) { | |
715 | curr = list_entry(pos, struct disk_part, list); | |
716 | if (i == partnum) { | |
717 | strcpy((char *)curr->gpt_part_info.name, name2); | |
718 | break; | |
719 | } | |
720 | i++; | |
721 | } | |
722 | } | |
723 | ||
724 | ret = create_gpt_partitions_list(numparts, disk_guid, partitions_list); | |
725 | if (ret < 0) | |
726 | return ret; | |
727 | debug("NEW partitions_list is %s with %u chars\n", partitions_list, | |
728 | (unsigned)strlen(partitions_list)); | |
729 | ||
730 | ret = set_gpt_info(dev_desc, partitions_list, &str_disk_guid, | |
731 | &new_partitions, &part_count); | |
732 | if (ret < 0) | |
733 | return ret; | |
734 | ||
735 | debug("Writing new partition table\n"); | |
736 | ret = gpt_restore(dev_desc, disk_guid, new_partitions, numparts); | |
737 | if (ret < 0) { | |
738 | printf("Writing new partition table failed\n"); | |
739 | return ret; | |
740 | } | |
741 | ||
742 | debug("Reading back new partition table\n"); | |
743 | numparts = get_gpt_info(dev_desc); | |
744 | if (numparts <= 0) | |
745 | return numparts ? numparts : -ENODEV; | |
746 | printf("new partition table with %d partitions is:\n", numparts); | |
747 | print_gpt_info(); | |
748 | ||
749 | del_gpt_info(); | |
750 | free(partitions_list); | |
751 | free(str_disk_guid); | |
752 | free(new_partitions); | |
753 | return ret; | |
754 | } | |
755 | #endif | |
756 | ||
8b096237 PW |
757 | /** |
758 | * do_gpt(): Perform GPT operations | |
759 | * | |
760 | * @param cmdtp - command name | |
761 | * @param flag | |
762 | * @param argc | |
763 | * @param argv | |
764 | * | |
765 | * @return zero on success; otherwise error | |
766 | */ | |
767 | static int do_gpt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) | |
768 | { | |
769 | int ret = CMD_RET_SUCCESS; | |
770 | int dev = 0; | |
619f0fdf | 771 | char *ep; |
4101f687 | 772 | struct blk_desc *blk_dev_desc = NULL; |
8b096237 | 773 | |
203f9b48 | 774 | #ifndef CONFIG_CMD_GPT_RENAME |
bbb9ffac | 775 | if (argc < 4 || argc > 5) |
203f9b48 AC |
776 | #else |
777 | if (argc < 4 || argc > 6) | |
778 | #endif | |
8b096237 PW |
779 | return CMD_RET_USAGE; |
780 | ||
bbb9ffac LM |
781 | dev = (int)simple_strtoul(argv[3], &ep, 10); |
782 | if (!ep || ep[0] != '\0') { | |
783 | printf("'%s' is not a number\n", argv[3]); | |
784 | return CMD_RET_USAGE; | |
785 | } | |
db1d9e78 | 786 | blk_dev_desc = blk_get_dev(argv[2], dev); |
bbb9ffac LM |
787 | if (!blk_dev_desc) { |
788 | printf("%s: %s dev %d NOT available\n", | |
789 | __func__, argv[2], dev); | |
790 | return CMD_RET_FAILURE; | |
791 | } | |
39206382 | 792 | |
bbb9ffac LM |
793 | if ((strcmp(argv[1], "write") == 0) && (argc == 5)) { |
794 | printf("Writing GPT: "); | |
39206382 | 795 | ret = gpt_default(blk_dev_desc, argv[4]); |
bbb9ffac LM |
796 | } else if ((strcmp(argv[1], "verify") == 0)) { |
797 | ret = gpt_verify(blk_dev_desc, argv[4]); | |
798 | printf("Verify GPT: "); | |
73d6d18b AC |
799 | } else if (strcmp(argv[1], "guid") == 0) { |
800 | ret = do_disk_guid(blk_dev_desc, argv[4]); | |
09a49930 AC |
801 | #ifdef CONFIG_CMD_GPT_RENAME |
802 | } else if (strcmp(argv[1], "read") == 0) { | |
803 | ret = do_get_gpt_info(blk_dev_desc); | |
203f9b48 AC |
804 | } else if ((strcmp(argv[1], "swap") == 0) || |
805 | (strcmp(argv[1], "rename") == 0)) { | |
806 | ret = do_rename_gpt_parts(blk_dev_desc, argv[1], argv[4], argv[5]); | |
09a49930 | 807 | #endif |
8b096237 PW |
808 | } else { |
809 | return CMD_RET_USAGE; | |
810 | } | |
bbb9ffac LM |
811 | |
812 | if (ret) { | |
813 | printf("error!\n"); | |
814 | return CMD_RET_FAILURE; | |
815 | } | |
816 | ||
817 | printf("success!\n"); | |
818 | return CMD_RET_SUCCESS; | |
8b096237 PW |
819 | } |
820 | ||
821 | U_BOOT_CMD(gpt, CONFIG_SYS_MAXARGS, 1, do_gpt, | |
822 | "GUID Partition Table", | |
1f8b546f | 823 | "<command> <interface> <dev> <partitions_list>\n" |
74f889b0 LM |
824 | " - GUID partition table restoration and validity check\n" |
825 | " Restore or verify GPT information on a device connected\n" | |
8b096237 | 826 | " to interface\n" |
74f889b0 LM |
827 | " Example usage:\n" |
828 | " gpt write mmc 0 $partitions\n" | |
829 | " gpt verify mmc 0 $partitions\n" | |
09a49930 AC |
830 | " read <interface> <dev>\n" |
831 | " - read GPT into a data structure for manipulation\n" | |
73d6d18b AC |
832 | " guid <interface> <dev>\n" |
833 | " - print disk GUID\n" | |
834 | " guid <interface> <dev> <varname>\n" | |
835 | " - set environment variable to disk GUID\n" | |
836 | " Example usage:\n" | |
837 | " gpt guid mmc 0\n" | |
838 | " gpt guid mmc 0 varname\n" | |
203f9b48 AC |
839 | #ifdef CONFIG_CMD_GPT_RENAME |
840 | "gpt partition renaming commands:\n" | |
841 | "gpt swap <interface> <dev> <name1> <name2>\n" | |
842 | " - change all partitions named name1 to name2\n" | |
843 | " and vice-versa\n" | |
844 | "gpt rename <interface> <dev> <part> <name>\n" | |
845 | " - rename the specified partition\n" | |
846 | " Example usage:\n" | |
847 | " gpt swap mmc 0 foo bar\n" | |
848 | " gpt rename mmc 0 3 foo\n" | |
849 | #endif | |
8b096237 | 850 | ); |