blob: efaf1bcecb2bae46c83268b5e69564f6857b40bd [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Piotr Wilczek8b096232012-12-11 11:09:47 +01002/*
3 * cmd_gpt.c -- GPT (GUID Partition Table) handling command
4 *
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +01005 * Copyright (C) 2015
6 * Lukasz Majewski <l.majewski@majess.pl>
7 *
Piotr Wilczek8b096232012-12-11 11:09:47 +01008 * Copyright (C) 2012 Samsung Electronics
9 * author: Lukasz Majewski <l.majewski@samsung.com>
10 * author: Piotr Wilczek <p.wilczek@samsung.com>
Piotr Wilczek8b096232012-12-11 11:09:47 +010011 */
12
13#include <common.h>
Simon Glass9fb625c2019-08-01 09:46:51 -060014#include <env.h>
Piotr Wilczek8b096232012-12-11 11:09:47 +010015#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>
Simon Glass61b29b82020-02-03 07:36:15 -070023#include <linux/err.h>
Alison Chaiken203f9b42017-07-04 11:19:18 -070024#include <linux/sizes.h>
25#include <stdlib.h>
Alison Chaiken09a49932017-07-04 11:18:50 -070026
27static LIST_HEAD(disk_partitions);
Piotr Wilczek8b096232012-12-11 11:09:47 +010028
Piotr Wilczek8b096232012-12-11 11:09:47 +010029/**
30 * extract_env(): Expand env name from string format '&{env_name}'
31 * and return pointer to the env (if the env is set)
32 *
33 * @param str - pointer to string
34 * @param env - pointer to pointer to extracted env
35 *
36 * @return - zero on successful expand and env is set
37 */
Przemyslaw Marczak39206382014-04-02 10:20:06 +020038static int extract_env(const char *str, char **env)
Piotr Wilczek8b096232012-12-11 11:09:47 +010039{
Przemyslaw Marczak39206382014-04-02 10:20:06 +020040 int ret = -1;
Piotr Wilczek8b096232012-12-11 11:09:47 +010041 char *e, *s;
Przemyslaw Marczak39206382014-04-02 10:20:06 +020042#ifdef CONFIG_RANDOM_UUID
43 char uuid_str[UUID_STR_LEN + 1];
44#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +010045
46 if (!str || strlen(str) < 4)
47 return -1;
48
Przemyslaw Marczak39206382014-04-02 10:20:06 +020049 if (!((strncmp(str, "${", 2) == 0) && (str[strlen(str) - 1] == '}')))
50 return -1;
51
52 s = strdup(str);
53 if (s == NULL)
54 return -1;
55
56 memset(s + strlen(s) - 1, '\0', 1);
57 memmove(s, s + 2, strlen(s) - 1);
58
Simon Glass00caae62017-08-03 12:22:12 -060059 e = env_get(s);
Przemyslaw Marczak39206382014-04-02 10:20:06 +020060 if (e == NULL) {
61#ifdef CONFIG_RANDOM_UUID
62 debug("%s unset. ", str);
Vincent Tinelli9da52f82017-02-27 16:11:15 +020063 gen_rand_uuid_str(uuid_str, UUID_STR_FORMAT_GUID);
Simon Glass382bee52017-08-03 12:22:09 -060064 env_set(s, uuid_str);
Przemyslaw Marczak39206382014-04-02 10:20:06 +020065
Simon Glass00caae62017-08-03 12:22:12 -060066 e = env_get(s);
Przemyslaw Marczak39206382014-04-02 10:20:06 +020067 if (e) {
68 debug("Set to random.\n");
69 ret = 0;
70 } else {
71 debug("Can't get random UUID.\n");
Piotr Wilczek8b096232012-12-11 11:09:47 +010072 }
Przemyslaw Marczak39206382014-04-02 10:20:06 +020073#else
74 debug("%s unset.\n", str);
75#endif
76 } else {
77 debug("%s get from environment.\n", str);
78 ret = 0;
Piotr Wilczek8b096232012-12-11 11:09:47 +010079 }
80
Przemyslaw Marczak39206382014-04-02 10:20:06 +020081 *env = e;
82 free(s);
83
84 return ret;
Piotr Wilczek8b096232012-12-11 11:09:47 +010085}
86
87/**
88 * extract_val(): Extract value from a key=value pair list (comma separated).
89 * Only value for the given key is returend.
90 * Function allocates memory for the value, remember to free!
91 *
92 * @param str - pointer to string with key=values pairs
93 * @param key - pointer to the key to search for
94 *
95 * @return - pointer to allocated string with the value
96 */
97static char *extract_val(const char *str, const char *key)
98{
99 char *v, *k;
100 char *s, *strcopy;
101 char *new = NULL;
102
103 strcopy = strdup(str);
104 if (strcopy == NULL)
105 return NULL;
106
107 s = strcopy;
108 while (s) {
109 v = strsep(&s, ",");
110 if (!v)
111 break;
112 k = strsep(&v, "=");
113 if (!k)
114 break;
115 if (strcmp(k, key) == 0) {
116 new = strdup(v);
117 break;
118 }
119 }
120
121 free(strcopy);
122
123 return new;
124}
125
126/**
Patrick Delaunaycfdaf4c2015-11-17 11:36:52 +0100127 * found_key(): Found key without value in parameter list (comma separated).
128 *
129 * @param str - pointer to string with key
130 * @param key - pointer to the key to search for
131 *
132 * @return - true on found key
133 */
134static bool found_key(const char *str, const char *key)
135{
136 char *k;
137 char *s, *strcopy;
138 bool result = false;
139
140 strcopy = strdup(str);
141 if (!strcopy)
142 return NULL;
143
144 s = strcopy;
145 while (s) {
146 k = strsep(&s, ",");
147 if (!k)
148 break;
149 if (strcmp(k, key) == 0) {
150 result = true;
151 break;
152 }
153 }
154
155 free(strcopy);
156
157 return result;
158}
159
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700160static int calc_parts_list_len(int numparts)
161{
162 int partlistlen = UUID_STR_LEN + 1 + strlen("uuid_disk=");
163 /* for the comma */
164 partlistlen++;
165
166 /* per-partition additions; numparts starts at 1, so this should be correct */
167 partlistlen += numparts * (strlen("name=,") + PART_NAME_LEN + 1);
168 /* see part.h for definition of struct disk_partition */
169 partlistlen += numparts * (strlen("start=MiB,") + sizeof(lbaint_t) + 1);
170 partlistlen += numparts * (strlen("size=MiB,") + sizeof(lbaint_t) + 1);
171 partlistlen += numparts * (strlen("uuid=;") + UUID_STR_LEN + 1);
172 /* for the terminating null */
173 partlistlen++;
174 debug("Length of partitions_list is %d for %d partitions\n", partlistlen,
175 numparts);
176 return partlistlen;
177}
178
Alison Chaiken09a49932017-07-04 11:18:50 -0700179#ifdef CONFIG_CMD_GPT_RENAME
180static void del_gpt_info(void)
181{
182 struct list_head *pos = &disk_partitions;
183 struct disk_part *curr;
184 while (!list_empty(pos)) {
185 curr = list_entry(pos->next, struct disk_part, list);
186 list_del(pos->next);
187 free(curr);
188 }
189}
190
191static struct disk_part *allocate_disk_part(disk_partition_t *info, int partnum)
192{
193 struct disk_part *newpart;
Heinrich Schuchardtf66bc0e2017-09-21 19:03:06 +0200194 newpart = calloc(1, sizeof(struct disk_part));
Alison Chaiken09a49932017-07-04 11:18:50 -0700195 if (!newpart)
196 return ERR_PTR(-ENOMEM);
Alison Chaiken09a49932017-07-04 11:18:50 -0700197
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);
Patrick Delaunay3a2605f2017-10-18 15:11:08 +0200286 sprintf(partstr, ",start=0x%llx",
287 (unsigned long long)curr->gpt_part_info.start *
288 curr->gpt_part_info.blksz);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700289 /* one extra byte for NULL */
290 strncat(partitions_list, partstr, PART_NAME_LEN + 1);
Patrick Delaunay3a2605f2017-10-18 15:11:08 +0200291 sprintf(partstr, ",size=0x%llx",
292 (unsigned long long)curr->gpt_part_info.size *
293 curr->gpt_part_info.blksz);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700294 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);
Tom Rinibf52fcd2017-10-07 11:27:59 -0400406 if (*str_disk_guid == NULL)
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700407 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)
Simon Glass382bee52017-08-03 12:22:09 -0600629 env_set(namestr, disk_guid);
Alison Chaiken73d6d182017-06-25 16:43:23 -0700630 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];
Tom Rini5749faa2020-01-21 11:53:38 -0500644 char *partitions_list, *str_disk_guid = NULL;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700645 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;
Alison Chaiken18030d02017-09-26 07:42:28 -0700655 /*
656 * Allocates disk_partitions, requiring matching call to del_gpt_info()
657 * if successful.
658 */
Alison Chaiken203f9b42017-07-04 11:19:18 -0700659 numparts = get_gpt_info(dev_desc);
660 if (numparts <= 0)
661 return numparts ? numparts : -ENODEV;
662
663 partlistlen = calc_parts_list_len(numparts);
664 partitions_list = malloc(partlistlen);
Alison Chaiken18030d02017-09-26 07:42:28 -0700665 if (!partitions_list) {
666 del_gpt_info();
Alison Chaiken203f9b42017-07-04 11:19:18 -0700667 return -ENOMEM;
Alison Chaiken18030d02017-09-26 07:42:28 -0700668 }
Alison Chaiken203f9b42017-07-04 11:19:18 -0700669 memset(partitions_list, '\0', partlistlen);
670
671 ret = create_gpt_partitions_list(numparts, disk_guid, partitions_list);
Alison Chaiken18030d02017-09-26 07:42:28 -0700672 if (ret < 0) {
673 free(partitions_list);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700674 return ret;
Alison Chaiken18030d02017-09-26 07:42:28 -0700675 }
Alison Chaiken203f9b42017-07-04 11:19:18 -0700676 /*
677 * Uncomment the following line to print a string that 'gpt write'
678 * or 'gpt verify' will accept as input.
679 */
680 debug("OLD partitions_list is %s with %u chars\n", partitions_list,
681 (unsigned)strlen(partitions_list));
682
Alison Chaiken18030d02017-09-26 07:42:28 -0700683 /* set_gpt_info allocates new_partitions and str_disk_guid */
Alison Chaiken203f9b42017-07-04 11:19:18 -0700684 ret = set_gpt_info(dev_desc, partitions_list, &str_disk_guid,
685 &new_partitions, &part_count);
Tom Rini5749faa2020-01-21 11:53:38 -0500686 if (ret < 0)
687 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700688
689 if (!strcmp(subcomm, "swap")) {
690 if ((strlen(name1) > PART_NAME_LEN) || (strlen(name2) > PART_NAME_LEN)) {
691 printf("Names longer than %d characters are truncated.\n", PART_NAME_LEN);
Alison Chaiken18030d02017-09-26 07:42:28 -0700692 ret = -EINVAL;
693 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700694 }
695 list_for_each(pos, &disk_partitions) {
696 curr = list_entry(pos, struct disk_part, list);
697 if (!strcmp((char *)curr->gpt_part_info.name, name1)) {
698 strcpy((char *)curr->gpt_part_info.name, name2);
699 ctr1++;
700 } else if (!strcmp((char *)curr->gpt_part_info.name, name2)) {
701 strcpy((char *)curr->gpt_part_info.name, name1);
702 ctr2++;
703 }
704 }
705 if ((ctr1 + ctr2 < 2) || (ctr1 != ctr2)) {
706 printf("Cannot swap partition names except in pairs.\n");
Alison Chaiken18030d02017-09-26 07:42:28 -0700707 ret = -EINVAL;
708 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700709 }
710 } else { /* rename */
711 if (strlen(name2) > PART_NAME_LEN) {
712 printf("Names longer than %d characters are truncated.\n", PART_NAME_LEN);
Alison Chaiken18030d02017-09-26 07:42:28 -0700713 ret = -EINVAL;
714 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700715 }
716 partnum = (int)simple_strtol(name1, NULL, 10);
717 if ((partnum < 0) || (partnum > numparts)) {
718 printf("Illegal partition number %s\n", name1);
Alison Chaiken18030d02017-09-26 07:42:28 -0700719 ret = -EINVAL;
720 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700721 }
722 ret = part_get_info(dev_desc, partnum, new_partitions);
723 if (ret < 0)
Alison Chaiken18030d02017-09-26 07:42:28 -0700724 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700725
726 /* U-Boot partition numbering starts at 1 */
727 list_for_each(pos, &disk_partitions) {
728 curr = list_entry(pos, struct disk_part, list);
729 if (i == partnum) {
730 strcpy((char *)curr->gpt_part_info.name, name2);
731 break;
732 }
733 i++;
734 }
735 }
736
737 ret = create_gpt_partitions_list(numparts, disk_guid, partitions_list);
738 if (ret < 0)
Alison Chaiken18030d02017-09-26 07:42:28 -0700739 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700740 debug("NEW partitions_list is %s with %u chars\n", partitions_list,
741 (unsigned)strlen(partitions_list));
742
743 ret = set_gpt_info(dev_desc, partitions_list, &str_disk_guid,
744 &new_partitions, &part_count);
Alison Chaiken18030d02017-09-26 07:42:28 -0700745 /*
746 * Even though valid pointers are here passed into set_gpt_info(),
747 * it mallocs again, and there's no way to tell which failed.
748 */
Tom Rini5749faa2020-01-21 11:53:38 -0500749 if (ret < 0)
750 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700751
752 debug("Writing new partition table\n");
753 ret = gpt_restore(dev_desc, disk_guid, new_partitions, numparts);
754 if (ret < 0) {
755 printf("Writing new partition table failed\n");
Alison Chaiken18030d02017-09-26 07:42:28 -0700756 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700757 }
758
759 debug("Reading back new partition table\n");
Alison Chaiken18030d02017-09-26 07:42:28 -0700760 /*
761 * Empty the existing disk_partitions list, as otherwise the memory in
762 * the original list is unreachable.
763 */
764 del_gpt_info();
Alison Chaiken203f9b42017-07-04 11:19:18 -0700765 numparts = get_gpt_info(dev_desc);
Alison Chaiken18030d02017-09-26 07:42:28 -0700766 if (numparts <= 0) {
767 ret = numparts ? numparts : -ENODEV;
768 goto out;
769 }
Alison Chaiken203f9b42017-07-04 11:19:18 -0700770 printf("new partition table with %d partitions is:\n", numparts);
771 print_gpt_info();
Alison Chaiken18030d02017-09-26 07:42:28 -0700772 out:
Tom Rini5749faa2020-01-21 11:53:38 -0500773 del_gpt_info();
774#ifdef CONFIG_RANDOM_UUID
775 if (str_disk_guid)
776 free(str_disk_guid);
777#endif
778 if (new_partitions)
779 free(new_partitions);
Alison Chaiken18030d02017-09-26 07:42:28 -0700780 free(partitions_list);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700781 return ret;
782}
783#endif
784
Piotr Wilczek8b096232012-12-11 11:09:47 +0100785/**
786 * do_gpt(): Perform GPT operations
787 *
788 * @param cmdtp - command name
789 * @param flag
790 * @param argc
791 * @param argv
792 *
793 * @return zero on success; otherwise error
794 */
795static int do_gpt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
796{
797 int ret = CMD_RET_SUCCESS;
798 int dev = 0;
Egbert Eich619f0fd2013-10-04 18:53:04 +0200799 char *ep;
Simon Glass4101f682016-02-29 15:25:34 -0700800 struct blk_desc *blk_dev_desc = NULL;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100801
Alison Chaiken203f9b42017-07-04 11:19:18 -0700802#ifndef CONFIG_CMD_GPT_RENAME
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100803 if (argc < 4 || argc > 5)
Alison Chaiken203f9b42017-07-04 11:19:18 -0700804#else
805 if (argc < 4 || argc > 6)
806#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +0100807 return CMD_RET_USAGE;
808
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100809 dev = (int)simple_strtoul(argv[3], &ep, 10);
810 if (!ep || ep[0] != '\0') {
811 printf("'%s' is not a number\n", argv[3]);
812 return CMD_RET_USAGE;
813 }
Simon Glassdb1d9e72016-02-29 15:25:42 -0700814 blk_dev_desc = blk_get_dev(argv[2], dev);
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100815 if (!blk_dev_desc) {
816 printf("%s: %s dev %d NOT available\n",
817 __func__, argv[2], dev);
818 return CMD_RET_FAILURE;
819 }
820
Piotr Wilczek8b096232012-12-11 11:09:47 +0100821 if ((strcmp(argv[1], "write") == 0) && (argc == 5)) {
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100822 printf("Writing GPT: ");
Przemyslaw Marczak39206382014-04-02 10:20:06 +0200823 ret = gpt_default(blk_dev_desc, argv[4]);
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100824 } else if ((strcmp(argv[1], "verify") == 0)) {
825 ret = gpt_verify(blk_dev_desc, argv[4]);
826 printf("Verify GPT: ");
Alison Chaiken73d6d182017-06-25 16:43:23 -0700827 } else if (strcmp(argv[1], "guid") == 0) {
828 ret = do_disk_guid(blk_dev_desc, argv[4]);
Alison Chaiken09a49932017-07-04 11:18:50 -0700829#ifdef CONFIG_CMD_GPT_RENAME
830 } else if (strcmp(argv[1], "read") == 0) {
831 ret = do_get_gpt_info(blk_dev_desc);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700832 } else if ((strcmp(argv[1], "swap") == 0) ||
833 (strcmp(argv[1], "rename") == 0)) {
834 ret = do_rename_gpt_parts(blk_dev_desc, argv[1], argv[4], argv[5]);
Alison Chaiken09a49932017-07-04 11:18:50 -0700835#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +0100836 } else {
837 return CMD_RET_USAGE;
838 }
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100839
840 if (ret) {
841 printf("error!\n");
842 return CMD_RET_FAILURE;
843 }
844
845 printf("success!\n");
846 return CMD_RET_SUCCESS;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100847}
848
849U_BOOT_CMD(gpt, CONFIG_SYS_MAXARGS, 1, do_gpt,
850 "GUID Partition Table",
Robert P. J. Day1f8b5462013-08-21 11:39:19 -0400851 "<command> <interface> <dev> <partitions_list>\n"
Lukasz Majewski74f889b2015-11-13 07:42:10 +0100852 " - GUID partition table restoration and validity check\n"
853 " Restore or verify GPT information on a device connected\n"
Piotr Wilczek8b096232012-12-11 11:09:47 +0100854 " to interface\n"
Lukasz Majewski74f889b2015-11-13 07:42:10 +0100855 " Example usage:\n"
856 " gpt write mmc 0 $partitions\n"
857 " gpt verify mmc 0 $partitions\n"
Eugeniu Roscad0266092019-04-30 04:53:46 +0200858 " gpt guid <interface> <dev>\n"
Alison Chaiken73d6d182017-06-25 16:43:23 -0700859 " - print disk GUID\n"
Eugeniu Roscad0266092019-04-30 04:53:46 +0200860 " gpt guid <interface> <dev> <varname>\n"
Alison Chaiken73d6d182017-06-25 16:43:23 -0700861 " - set environment variable to disk GUID\n"
862 " Example usage:\n"
863 " gpt guid mmc 0\n"
864 " gpt guid mmc 0 varname\n"
Alison Chaiken203f9b42017-07-04 11:19:18 -0700865#ifdef CONFIG_CMD_GPT_RENAME
866 "gpt partition renaming commands:\n"
Eugeniu Roscad0266092019-04-30 04:53:46 +0200867 " gpt read <interface> <dev>\n"
868 " - read GPT into a data structure for manipulation\n"
869 " gpt swap <interface> <dev> <name1> <name2>\n"
Alison Chaiken203f9b42017-07-04 11:19:18 -0700870 " - change all partitions named name1 to name2\n"
871 " and vice-versa\n"
Eugeniu Roscad0266092019-04-30 04:53:46 +0200872 " gpt rename <interface> <dev> <part> <name>\n"
Alison Chaiken203f9b42017-07-04 11:19:18 -0700873 " - rename the specified partition\n"
874 " Example usage:\n"
875 " gpt swap mmc 0 foo bar\n"
876 " gpt rename mmc 0 3 foo\n"
877#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +0100878);