blob: 6f08f611168d422c4f44b10cd83533c58b9e9a0d [file] [log] [blame]
Piotr Wilczek8b096232012-12-11 11:09:47 +01001/*
2 * cmd_gpt.c -- GPT (GUID Partition Table) handling command
3 *
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +01004 * Copyright (C) 2015
5 * Lukasz Majewski <l.majewski@majess.pl>
6 *
Piotr Wilczek8b096232012-12-11 11:09:47 +01007 * Copyright (C) 2012 Samsung Electronics
8 * author: Lukasz Majewski <l.majewski@samsung.com>
9 * author: Piotr Wilczek <p.wilczek@samsung.com>
10 *
Wolfgang Denk1a459662013-07-08 09:37:19 +020011 * SPDX-License-Identifier: GPL-2.0+
Piotr Wilczek8b096232012-12-11 11:09:47 +010012 */
13
14#include <common.h>
15#include <malloc.h>
16#include <command.h>
Piotr Wilczek8b096232012-12-11 11:09:47 +010017#include <part_efi.h>
18#include <exports.h>
19#include <linux/ctype.h>
Piotr Wilczek3e34cf72013-01-27 22:59:25 +000020#include <div64.h>
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +010021#include <memalign.h>
Alison Chaiken09a49932017-07-04 11:18:50 -070022#include <linux/compat.h>
Alison Chaiken203f9b42017-07-04 11:19:18 -070023#include <linux/sizes.h>
24#include <stdlib.h>
Alison Chaiken09a49932017-07-04 11:18:50 -070025
26static LIST_HEAD(disk_partitions);
Piotr Wilczek8b096232012-12-11 11:09:47 +010027
Piotr Wilczek8b096232012-12-11 11:09:47 +010028/**
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 */
Przemyslaw Marczak39206382014-04-02 10:20:06 +020037static int extract_env(const char *str, char **env)
Piotr Wilczek8b096232012-12-11 11:09:47 +010038{
Przemyslaw Marczak39206382014-04-02 10:20:06 +020039 int ret = -1;
Piotr Wilczek8b096232012-12-11 11:09:47 +010040 char *e, *s;
Przemyslaw Marczak39206382014-04-02 10:20:06 +020041#ifdef CONFIG_RANDOM_UUID
42 char uuid_str[UUID_STR_LEN + 1];
43#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +010044
45 if (!str || strlen(str) < 4)
46 return -1;
47
Przemyslaw Marczak39206382014-04-02 10:20:06 +020048 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
58 e = getenv(s);
59 if (e == NULL) {
60#ifdef CONFIG_RANDOM_UUID
61 debug("%s unset. ", str);
Vincent Tinelli9da52f82017-02-27 16:11:15 +020062 gen_rand_uuid_str(uuid_str, UUID_STR_FORMAT_GUID);
Przemyslaw Marczak39206382014-04-02 10:20:06 +020063 setenv(s, uuid_str);
64
Piotr Wilczek8b096232012-12-11 11:09:47 +010065 e = getenv(s);
Przemyslaw Marczak39206382014-04-02 10:20:06 +020066 if (e) {
67 debug("Set to random.\n");
68 ret = 0;
69 } else {
70 debug("Can't get random UUID.\n");
Piotr Wilczek8b096232012-12-11 11:09:47 +010071 }
Przemyslaw Marczak39206382014-04-02 10:20:06 +020072#else
73 debug("%s unset.\n", str);
74#endif
75 } else {
76 debug("%s get from environment.\n", str);
77 ret = 0;
Piotr Wilczek8b096232012-12-11 11:09:47 +010078 }
79
Przemyslaw Marczak39206382014-04-02 10:20:06 +020080 *env = e;
81 free(s);
82
83 return ret;
Piotr Wilczek8b096232012-12-11 11:09:47 +010084}
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 */
96static 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
125/**
Patrick Delaunaycfdaf4c2015-11-17 11:36:52 +0100126 * 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 */
133static 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
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700159static 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
Alison Chaiken09a49932017-07-04 11:18:50 -0700178#ifdef CONFIG_CMD_GPT_RENAME
179static 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
190static 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
Alison Chaiken203f9b42017-07-04 11:19:18 -0700219static 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
Alison Chaiken09a49932017-07-04 11:18:50 -0700229static void print_gpt_info(void)
230{
231 struct list_head *pos;
232 struct disk_part *curr;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700233 char partstartstr[16];
234 char partsizestr[16];
Alison Chaiken09a49932017-07-04 11:18:50 -0700235
236 list_for_each(pos, &disk_partitions) {
237 curr = list_entry(pos, struct disk_part, list);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700238 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
Alison Chaiken09a49932017-07-04 11:18:50 -0700243 printf("Partition %d:\n", curr->partnum);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700244 printf("Start %s, size %s\n", partstartstr, partsizestr);
Alison Chaiken09a49932017-07-04 11:18:50 -0700245 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
Alison Chaiken203f9b42017-07-04 11:19:18 -0700256/*
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 */
267static 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
Alison Chaiken09a49932017-07-04 11:18:50 -0700304/*
305 * read partition info into disk_partitions list where
306 * it can be printed or modified
307 */
308static 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
Alison Chaiken203f9b42017-07-04 11:19:18 -0700315 /*
316 * Always re-read partition info from device, in case
317 * it has changed
318 */
319 INIT_LIST_HEAD(&disk_partitions);
Alison Chaiken09a49932017-07-04 11:18:50 -0700320
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 */
347static 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
Patrick Delaunaycfdaf4c2015-11-17 11:36:52 +0100361/**
Piotr Wilczek8b096232012-12-11 11:09:47 +0100362 * 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 */
Simon Glass4101f682016-02-29 15:25:34 -0700374static int set_gpt_info(struct blk_desc *dev_desc,
Piotr Wilczek8b096232012-12-11 11:09:47 +0100375 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;
Piotr Wilczek3e34cf72013-01-27 22:59:25 +0000386 uint64_t size_ll, start_ll;
Michael Trimarchi6663623562016-06-08 10:18:16 +0200387 lbaint_t offset = 0;
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700388 int max_str_part = calc_parts_list_len(MAX_SEARCH_PARTITIONS);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100389
Egbert Eich619f0fd2013-10-04 18:53:04 +0200390 debug("%s: lba num: 0x%x %d\n", __func__,
Piotr Wilczek8b096232012-12-11 11:09:47 +0100391 (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);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700397 if (str == NULL)
398 return -ENOMEM;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100399
400 /* extract disk guid */
401 s = str;
Rob Herring0c7e8d12015-01-26 09:44:18 -0600402 val = extract_val(str, "uuid_disk");
Piotr Wilczek8b096232012-12-11 11:09:47 +0100403 if (!val) {
Rob Herring0c7e8d12015-01-26 09:44:18 -0600404#ifdef CONFIG_RANDOM_UUID
405 *str_disk_guid = malloc(UUID_STR_LEN + 1);
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700406 if (str_disk_guid == NULL)
407 return -ENOMEM;
Rob Herring0c7e8d12015-01-26 09:44:18 -0600408 gen_rand_uuid_str(*str_disk_guid, UUID_STR_FORMAT_STD);
409#else
Piotr Wilczek8b096232012-12-11 11:09:47 +0100410 free(str);
411 return -2;
Rob Herring0c7e8d12015-01-26 09:44:18 -0600412#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, ";");
Piotr Wilczek8b096232012-12-11 11:09:47 +0100421 }
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700422 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)
Piotr Wilczek8b096232012-12-11 11:09:47 +0100427 return -3;
428
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700429 i = strnlen(s, max_str_part) - 1;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100430 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);
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700443 if (parts == NULL)
444 return -ENOMEM;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100445
Robert P. J. Day1f8b5462013-08-21 11:39:19 -0400446 /* retrieve partitions data from string */
Piotr Wilczek8b096232012-12-11 11:09:47 +0100447 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");
Rob Herring0c7e8d12015-01-26 09:44:18 -0600455 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
Piotr Wilczek8b096232012-12-11 11:09:47 +0100460 errno = -4;
461 goto err;
Rob Herring0c7e8d12015-01-26 09:44:18 -0600462#endif
463 } else {
464 if (extract_env(val, &p))
465 p = val;
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700466 if (strnlen(p, max_str_part) >= sizeof(parts[i].uuid)) {
Rob Herring0c7e8d12015-01-26 09:44:18 -0600467 printf("Wrong uuid format for partition %d\n", i);
468 errno = -4;
469 goto err;
470 }
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700471 strncpy((char *)parts[i].uuid, p, max_str_part);
Rob Herring0c7e8d12015-01-26 09:44:18 -0600472 free(val);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100473 }
Patrick Delaunay7561b252015-10-27 11:00:27 +0100474#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;
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700481 if (strnlen(p, max_str_part) >= sizeof(parts[i].type_guid)) {
Patrick Delaunay7561b252015-10-27 11:00:27 +0100482 printf("Wrong type guid format for partition %d\n",
483 i);
484 errno = -4;
485 goto err;
486 }
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700487 strncpy((char *)parts[i].type_guid, p, max_str_part);
Patrick Delaunay7561b252015-10-27 11:00:27 +0100488 free(val);
489 }
490#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +0100491 /* 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;
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700499 if (strnlen(p, max_str_part) >= sizeof(parts[i].name)) {
Piotr Wilczek8b096232012-12-11 11:09:47 +0100500 errno = -4;
501 goto err;
502 }
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700503 strncpy((char *)parts[i].name, p, max_str_part);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100504 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;
Michael Trimarchi6663623562016-06-08 10:18:16 +0200514 if ((strcmp(p, "-") == 0)) {
Kever Yangc2fdd342016-07-29 11:12:18 +0800515 /* Let part efi module to auto extend the size */
516 parts[i].size = 0;
Michael Trimarchi6663623562016-06-08 10:18:16 +0200517 } else {
518 size_ll = ustrtoull(p, &p, 0);
519 parts[i].size = lldiv(size_ll, dev_desc->blksz);
520 }
521
Piotr Wilczek8b096232012-12-11 11:09:47 +0100522 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;
Piotr Wilczek3e34cf72013-01-27 22:59:25 +0000529 start_ll = ustrtoull(p, &p, 0);
530 parts[i].start = lldiv(start_ll, dev_desc->blksz);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100531 free(val);
532 }
Patrick Delaunaycfdaf4c2015-11-17 11:36:52 +0100533
Michael Trimarchi6663623562016-06-08 10:18:16 +0200534 offset += parts[i].size + parts[i].start;
535
Patrick Delaunaycfdaf4c2015-11-17 11:36:52 +0100536 /* bootable */
537 if (found_key(tok, "bootable"))
538 parts[i].bootable = 1;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100539 }
540
541 *parts_count = p_count;
542 *partitions = parts;
543 free(str);
544
545 return 0;
546err:
547 free(str);
548 free(*str_disk_guid);
549 free(parts);
550
551 return errno;
552}
553
Simon Glass4101f682016-02-29 15:25:34 -0700554static int gpt_default(struct blk_desc *blk_dev_desc, const char *str_part)
Piotr Wilczek8b096232012-12-11 11:09:47 +0100555{
556 int ret;
557 char *str_disk_guid;
558 u8 part_count = 0;
559 disk_partition_t *partitions = NULL;
560
Piotr Wilczek8b096232012-12-11 11:09:47 +0100561 /* fill partitions */
Egbert Eich619f0fd2013-10-04 18:53:04 +0200562 ret = set_gpt_info(blk_dev_desc, str_part,
Piotr Wilczek8b096232012-12-11 11:09:47 +0100563 &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 */
Rob Herringa150e6c2015-01-26 09:43:15 -0600575 ret = gpt_restore(blk_dev_desc, str_disk_guid, partitions, part_count);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100576 free(str_disk_guid);
577 free(partitions);
578
Rob Herringa150e6c2015-01-26 09:43:15 -0600579 return ret;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100580}
581
Simon Glass4101f682016-02-29 15:25:34 -0700582static int gpt_verify(struct blk_desc *blk_dev_desc, const char *str_part)
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100583{
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
Alison Chaiken73d6d182017-06-25 16:43:23 -0700619static 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)
629 setenv(namestr, disk_guid);
630 else
631 printf("%s\n", disk_guid);
632
633 return ret;
634}
635
Alison Chaiken203f9b42017-07-04 11:19:18 -0700636#ifdef CONFIG_CMD_GPT_RENAME
637static 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
Piotr Wilczek8b096232012-12-11 11:09:47 +0100757/**
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 */
767static 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;
Egbert Eich619f0fd2013-10-04 18:53:04 +0200771 char *ep;
Simon Glass4101f682016-02-29 15:25:34 -0700772 struct blk_desc *blk_dev_desc = NULL;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100773
Alison Chaiken203f9b42017-07-04 11:19:18 -0700774#ifndef CONFIG_CMD_GPT_RENAME
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100775 if (argc < 4 || argc > 5)
Alison Chaiken203f9b42017-07-04 11:19:18 -0700776#else
777 if (argc < 4 || argc > 6)
778#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +0100779 return CMD_RET_USAGE;
780
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100781 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 }
Simon Glassdb1d9e72016-02-29 15:25:42 -0700786 blk_dev_desc = blk_get_dev(argv[2], dev);
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100787 if (!blk_dev_desc) {
788 printf("%s: %s dev %d NOT available\n",
789 __func__, argv[2], dev);
790 return CMD_RET_FAILURE;
791 }
792
Piotr Wilczek8b096232012-12-11 11:09:47 +0100793 if ((strcmp(argv[1], "write") == 0) && (argc == 5)) {
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100794 printf("Writing GPT: ");
Przemyslaw Marczak39206382014-04-02 10:20:06 +0200795 ret = gpt_default(blk_dev_desc, argv[4]);
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100796 } else if ((strcmp(argv[1], "verify") == 0)) {
797 ret = gpt_verify(blk_dev_desc, argv[4]);
798 printf("Verify GPT: ");
Alison Chaiken73d6d182017-06-25 16:43:23 -0700799 } else if (strcmp(argv[1], "guid") == 0) {
800 ret = do_disk_guid(blk_dev_desc, argv[4]);
Alison Chaiken09a49932017-07-04 11:18:50 -0700801#ifdef CONFIG_CMD_GPT_RENAME
802 } else if (strcmp(argv[1], "read") == 0) {
803 ret = do_get_gpt_info(blk_dev_desc);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700804 } 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]);
Alison Chaiken09a49932017-07-04 11:18:50 -0700807#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +0100808 } else {
809 return CMD_RET_USAGE;
810 }
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100811
812 if (ret) {
813 printf("error!\n");
814 return CMD_RET_FAILURE;
815 }
816
817 printf("success!\n");
818 return CMD_RET_SUCCESS;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100819}
820
821U_BOOT_CMD(gpt, CONFIG_SYS_MAXARGS, 1, do_gpt,
822 "GUID Partition Table",
Robert P. J. Day1f8b5462013-08-21 11:39:19 -0400823 "<command> <interface> <dev> <partitions_list>\n"
Lukasz Majewski74f889b2015-11-13 07:42:10 +0100824 " - GUID partition table restoration and validity check\n"
825 " Restore or verify GPT information on a device connected\n"
Piotr Wilczek8b096232012-12-11 11:09:47 +0100826 " to interface\n"
Lukasz Majewski74f889b2015-11-13 07:42:10 +0100827 " Example usage:\n"
828 " gpt write mmc 0 $partitions\n"
829 " gpt verify mmc 0 $partitions\n"
Alison Chaiken09a49932017-07-04 11:18:50 -0700830 " read <interface> <dev>\n"
831 " - read GPT into a data structure for manipulation\n"
Alison Chaiken73d6d182017-06-25 16:43:23 -0700832 " 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"
Alison Chaiken203f9b42017-07-04 11:19:18 -0700839#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
Piotr Wilczek8b096232012-12-11 11:09:47 +0100850);