blob: 17f2b839d72590dc5d1343cad72cb047d2b5e6ed [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 Glasse6f6f9e2020-05-10 11:39:58 -060014#include <blk.h>
Simon Glass9fb625c2019-08-01 09:46:51 -060015#include <env.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060016#include <log.h>
Piotr Wilczek8b096232012-12-11 11:09:47 +010017#include <malloc.h>
18#include <command.h>
Simon Glasse6f6f9e2020-05-10 11:39:58 -060019#include <part.h>
Piotr Wilczek8b096232012-12-11 11:09:47 +010020#include <part_efi.h>
Corneliu Doban12fc1f32020-11-09 11:49:16 +053021#include <part.h>
Piotr Wilczek8b096232012-12-11 11:09:47 +010022#include <exports.h>
Simon Glassba06b3c2020-05-10 11:39:52 -060023#include <uuid.h>
Piotr Wilczek8b096232012-12-11 11:09:47 +010024#include <linux/ctype.h>
Piotr Wilczek3e34cf72013-01-27 22:59:25 +000025#include <div64.h>
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +010026#include <memalign.h>
Alison Chaiken09a49932017-07-04 11:18:50 -070027#include <linux/compat.h>
Simon Glass61b29b82020-02-03 07:36:15 -070028#include <linux/err.h>
Alison Chaiken203f9b42017-07-04 11:19:18 -070029#include <linux/sizes.h>
30#include <stdlib.h>
Alison Chaiken09a49932017-07-04 11:18:50 -070031
32static LIST_HEAD(disk_partitions);
Piotr Wilczek8b096232012-12-11 11:09:47 +010033
Piotr Wilczek8b096232012-12-11 11:09:47 +010034/**
35 * extract_env(): Expand env name from string format '&{env_name}'
36 * and return pointer to the env (if the env is set)
37 *
38 * @param str - pointer to string
39 * @param env - pointer to pointer to extracted env
40 *
41 * @return - zero on successful expand and env is set
42 */
Przemyslaw Marczak39206382014-04-02 10:20:06 +020043static int extract_env(const char *str, char **env)
Piotr Wilczek8b096232012-12-11 11:09:47 +010044{
Przemyslaw Marczak39206382014-04-02 10:20:06 +020045 int ret = -1;
Piotr Wilczek8b096232012-12-11 11:09:47 +010046 char *e, *s;
Przemyslaw Marczak39206382014-04-02 10:20:06 +020047#ifdef CONFIG_RANDOM_UUID
48 char uuid_str[UUID_STR_LEN + 1];
49#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +010050
51 if (!str || strlen(str) < 4)
52 return -1;
53
Przemyslaw Marczak39206382014-04-02 10:20:06 +020054 if (!((strncmp(str, "${", 2) == 0) && (str[strlen(str) - 1] == '}')))
55 return -1;
56
57 s = strdup(str);
58 if (s == NULL)
59 return -1;
60
61 memset(s + strlen(s) - 1, '\0', 1);
62 memmove(s, s + 2, strlen(s) - 1);
63
Simon Glass00caae62017-08-03 12:22:12 -060064 e = env_get(s);
Przemyslaw Marczak39206382014-04-02 10:20:06 +020065 if (e == NULL) {
66#ifdef CONFIG_RANDOM_UUID
67 debug("%s unset. ", str);
Vincent Tinelli9da52f82017-02-27 16:11:15 +020068 gen_rand_uuid_str(uuid_str, UUID_STR_FORMAT_GUID);
Simon Glass382bee52017-08-03 12:22:09 -060069 env_set(s, uuid_str);
Przemyslaw Marczak39206382014-04-02 10:20:06 +020070
Simon Glass00caae62017-08-03 12:22:12 -060071 e = env_get(s);
Przemyslaw Marczak39206382014-04-02 10:20:06 +020072 if (e) {
73 debug("Set to random.\n");
74 ret = 0;
75 } else {
76 debug("Can't get random UUID.\n");
Piotr Wilczek8b096232012-12-11 11:09:47 +010077 }
Przemyslaw Marczak39206382014-04-02 10:20:06 +020078#else
79 debug("%s unset.\n", str);
80#endif
81 } else {
82 debug("%s get from environment.\n", str);
83 ret = 0;
Piotr Wilczek8b096232012-12-11 11:09:47 +010084 }
85
Przemyslaw Marczak39206382014-04-02 10:20:06 +020086 *env = e;
87 free(s);
88
89 return ret;
Piotr Wilczek8b096232012-12-11 11:09:47 +010090}
91
92/**
93 * extract_val(): Extract value from a key=value pair list (comma separated).
94 * Only value for the given key is returend.
95 * Function allocates memory for the value, remember to free!
96 *
97 * @param str - pointer to string with key=values pairs
98 * @param key - pointer to the key to search for
99 *
100 * @return - pointer to allocated string with the value
101 */
102static char *extract_val(const char *str, const char *key)
103{
104 char *v, *k;
105 char *s, *strcopy;
106 char *new = NULL;
107
108 strcopy = strdup(str);
109 if (strcopy == NULL)
110 return NULL;
111
112 s = strcopy;
113 while (s) {
114 v = strsep(&s, ",");
115 if (!v)
116 break;
117 k = strsep(&v, "=");
118 if (!k)
119 break;
120 if (strcmp(k, key) == 0) {
121 new = strdup(v);
122 break;
123 }
124 }
125
126 free(strcopy);
127
128 return new;
129}
130
131/**
Patrick Delaunaycfdaf4c2015-11-17 11:36:52 +0100132 * found_key(): Found key without value in parameter list (comma separated).
133 *
134 * @param str - pointer to string with key
135 * @param key - pointer to the key to search for
136 *
137 * @return - true on found key
138 */
139static bool found_key(const char *str, const char *key)
140{
141 char *k;
142 char *s, *strcopy;
143 bool result = false;
144
145 strcopy = strdup(str);
146 if (!strcopy)
147 return NULL;
148
149 s = strcopy;
150 while (s) {
151 k = strsep(&s, ",");
152 if (!k)
153 break;
154 if (strcmp(k, key) == 0) {
155 result = true;
156 break;
157 }
158 }
159
160 free(strcopy);
161
162 return result;
163}
164
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700165static int calc_parts_list_len(int numparts)
166{
167 int partlistlen = UUID_STR_LEN + 1 + strlen("uuid_disk=");
168 /* for the comma */
169 partlistlen++;
170
171 /* per-partition additions; numparts starts at 1, so this should be correct */
172 partlistlen += numparts * (strlen("name=,") + PART_NAME_LEN + 1);
173 /* see part.h for definition of struct disk_partition */
174 partlistlen += numparts * (strlen("start=MiB,") + sizeof(lbaint_t) + 1);
175 partlistlen += numparts * (strlen("size=MiB,") + sizeof(lbaint_t) + 1);
176 partlistlen += numparts * (strlen("uuid=;") + UUID_STR_LEN + 1);
177 /* for the terminating null */
178 partlistlen++;
179 debug("Length of partitions_list is %d for %d partitions\n", partlistlen,
180 numparts);
181 return partlistlen;
182}
183
Alison Chaiken09a49932017-07-04 11:18:50 -0700184#ifdef CONFIG_CMD_GPT_RENAME
185static void del_gpt_info(void)
186{
187 struct list_head *pos = &disk_partitions;
188 struct disk_part *curr;
189 while (!list_empty(pos)) {
190 curr = list_entry(pos->next, struct disk_part, list);
191 list_del(pos->next);
192 free(curr);
193 }
194}
195
Simon Glass05289792020-05-10 11:39:57 -0600196static struct disk_part *allocate_disk_part(struct disk_partition *info,
197 int partnum)
Alison Chaiken09a49932017-07-04 11:18:50 -0700198{
199 struct disk_part *newpart;
Heinrich Schuchardtf66bc0e2017-09-21 19:03:06 +0200200 newpart = calloc(1, sizeof(struct disk_part));
Alison Chaiken09a49932017-07-04 11:18:50 -0700201 if (!newpart)
202 return ERR_PTR(-ENOMEM);
Alison Chaiken09a49932017-07-04 11:18:50 -0700203
204 newpart->gpt_part_info.start = info->start;
205 newpart->gpt_part_info.size = info->size;
206 newpart->gpt_part_info.blksz = info->blksz;
207 strncpy((char *)newpart->gpt_part_info.name, (const char *)info->name,
208 PART_NAME_LEN);
209 newpart->gpt_part_info.name[PART_NAME_LEN - 1] = '\0';
210 strncpy((char *)newpart->gpt_part_info.type, (const char *)info->type,
211 PART_TYPE_LEN);
212 newpart->gpt_part_info.type[PART_TYPE_LEN - 1] = '\0';
213 newpart->gpt_part_info.bootable = info->bootable;
214#ifdef CONFIG_PARTITION_UUIDS
215 strncpy(newpart->gpt_part_info.uuid, (const char *)info->uuid,
216 UUID_STR_LEN);
217 /* UUID_STR_LEN is correct, as uuid[]'s length is UUID_STR_LEN+1 chars */
218 newpart->gpt_part_info.uuid[UUID_STR_LEN] = '\0';
219#endif
220 newpart->partnum = partnum;
221
222 return newpart;
223}
224
Alison Chaiken203f9b42017-07-04 11:19:18 -0700225static void prettyprint_part_size(char *sizestr, lbaint_t partsize,
226 lbaint_t blksize)
227{
228 unsigned long long partbytes, partmegabytes;
229
230 partbytes = partsize * blksize;
231 partmegabytes = lldiv(partbytes, SZ_1M);
232 snprintf(sizestr, 16, "%lluMiB", partmegabytes);
233}
234
Alison Chaiken09a49932017-07-04 11:18:50 -0700235static void print_gpt_info(void)
236{
237 struct list_head *pos;
238 struct disk_part *curr;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700239 char partstartstr[16];
240 char partsizestr[16];
Alison Chaiken09a49932017-07-04 11:18:50 -0700241
242 list_for_each(pos, &disk_partitions) {
243 curr = list_entry(pos, struct disk_part, list);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700244 prettyprint_part_size(partstartstr, curr->gpt_part_info.start,
245 curr->gpt_part_info.blksz);
246 prettyprint_part_size(partsizestr, curr->gpt_part_info.size,
247 curr->gpt_part_info.blksz);
248
Alison Chaiken09a49932017-07-04 11:18:50 -0700249 printf("Partition %d:\n", curr->partnum);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700250 printf("Start %s, size %s\n", partstartstr, partsizestr);
Alison Chaiken09a49932017-07-04 11:18:50 -0700251 printf("Block size %lu, name %s\n", curr->gpt_part_info.blksz,
252 curr->gpt_part_info.name);
253 printf("Type %s, bootable %d\n", curr->gpt_part_info.type,
Heinrich Schuchardt25801ac2020-03-19 13:49:34 +0100254 curr->gpt_part_info.bootable & PART_BOOTABLE);
Alison Chaiken09a49932017-07-04 11:18:50 -0700255#ifdef CONFIG_PARTITION_UUIDS
256 printf("UUID %s\n", curr->gpt_part_info.uuid);
257#endif
258 printf("\n");
259 }
260}
261
Alison Chaiken203f9b42017-07-04 11:19:18 -0700262/*
263 * create the string that upstream 'gpt write' command will accept as an
264 * argument
265 *
266 * From doc/README.gpt, Format of partitions layout:
267 * "uuid_disk=...;name=u-boot,size=60MiB,uuid=...;
268 * name=kernel,size=60MiB,uuid=...;"
269 * The fields 'name' and 'size' are mandatory for every partition.
270 * The field 'start' is optional. The fields 'uuid' and 'uuid_disk'
271 * are optional if CONFIG_RANDOM_UUID is enabled.
272 */
273static int create_gpt_partitions_list(int numparts, const char *guid,
274 char *partitions_list)
275{
276 struct list_head *pos;
277 struct disk_part *curr;
278 char partstr[PART_NAME_LEN + 1];
279
280 if (!partitions_list)
281 return -EINVAL;
282
283 strcpy(partitions_list, "uuid_disk=");
284 strncat(partitions_list, guid, UUID_STR_LEN + 1);
285 strcat(partitions_list, ";");
286
287 list_for_each(pos, &disk_partitions) {
288 curr = list_entry(pos, struct disk_part, list);
289 strcat(partitions_list, "name=");
290 strncat(partitions_list, (const char *)curr->gpt_part_info.name,
291 PART_NAME_LEN + 1);
Patrick Delaunay3a2605f2017-10-18 15:11:08 +0200292 sprintf(partstr, ",start=0x%llx",
293 (unsigned long long)curr->gpt_part_info.start *
294 curr->gpt_part_info.blksz);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700295 /* one extra byte for NULL */
296 strncat(partitions_list, partstr, PART_NAME_LEN + 1);
Patrick Delaunay3a2605f2017-10-18 15:11:08 +0200297 sprintf(partstr, ",size=0x%llx",
298 (unsigned long long)curr->gpt_part_info.size *
299 curr->gpt_part_info.blksz);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700300 strncat(partitions_list, partstr, PART_NAME_LEN + 1);
301
302 strcat(partitions_list, ",uuid=");
303 strncat(partitions_list, curr->gpt_part_info.uuid,
304 UUID_STR_LEN + 1);
305 strcat(partitions_list, ";");
306 }
307 return 0;
308}
309
Alison Chaiken09a49932017-07-04 11:18:50 -0700310/*
311 * read partition info into disk_partitions list where
312 * it can be printed or modified
313 */
314static int get_gpt_info(struct blk_desc *dev_desc)
315{
316 /* start partition numbering at 1, as U-Boot does */
317 int valid_parts = 0, p, ret;
Simon Glass05289792020-05-10 11:39:57 -0600318 struct disk_partition info;
Alison Chaiken09a49932017-07-04 11:18:50 -0700319 struct disk_part *new_disk_part;
320
Alison Chaiken203f9b42017-07-04 11:19:18 -0700321 /*
322 * Always re-read partition info from device, in case
323 * it has changed
324 */
325 INIT_LIST_HEAD(&disk_partitions);
Alison Chaiken09a49932017-07-04 11:18:50 -0700326
327 for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
328 ret = part_get_info(dev_desc, p, &info);
329 if (ret)
330 continue;
331
332 /* Add 1 here because counter is zero-based but p1 is
333 the first partition */
334 new_disk_part = allocate_disk_part(&info, valid_parts+1);
335 if (IS_ERR(new_disk_part))
336 goto out;
337
338 list_add_tail(&new_disk_part->list, &disk_partitions);
339 valid_parts++;
340 }
341 if (valid_parts == 0) {
342 printf("** No valid partitions found **\n");
343 goto out;
344 }
345 return valid_parts;
346 out:
347 if (valid_parts >= 1)
348 del_gpt_info();
349 return -ENODEV;
350}
351
352/* a wrapper to test get_gpt_info */
Farhan Ali653cd922021-02-26 10:17:33 -0800353static int do_get_gpt_info(struct blk_desc *dev_desc, char * const namestr)
Alison Chaiken09a49932017-07-04 11:18:50 -0700354{
Farhan Ali653cd922021-02-26 10:17:33 -0800355 int numparts;
Alison Chaiken09a49932017-07-04 11:18:50 -0700356
Farhan Ali653cd922021-02-26 10:17:33 -0800357 numparts = get_gpt_info(dev_desc);
358
359 if (numparts > 0) {
360 if (namestr) {
361 char disk_guid[UUID_STR_LEN + 1];
362 char *partitions_list;
363 int partlistlen;
364 int ret = -1;
365
366 ret = get_disk_guid(dev_desc, disk_guid);
367 if (ret < 0)
368 return ret;
369
370 partlistlen = calc_parts_list_len(numparts);
371 partitions_list = malloc(partlistlen);
372 if (!partitions_list) {
373 del_gpt_info();
374 return -ENOMEM;
375 }
376 memset(partitions_list, '\0', partlistlen);
377
378 ret = create_gpt_partitions_list(numparts, disk_guid,
379 partitions_list);
380 if (ret < 0)
381 printf("Error: Could not create partition list string!\n");
382 else
383 env_set(namestr, partitions_list);
384
385 free(partitions_list);
386 } else {
387 print_gpt_info();
388 }
Alison Chaiken09a49932017-07-04 11:18:50 -0700389 del_gpt_info();
390 return 0;
391 }
Farhan Ali653cd922021-02-26 10:17:33 -0800392 return numparts;
Alison Chaiken09a49932017-07-04 11:18:50 -0700393}
394#endif
395
Patrick Delaunaycfdaf4c2015-11-17 11:36:52 +0100396/**
Piotr Wilczek8b096232012-12-11 11:09:47 +0100397 * set_gpt_info(): Fill partition information from string
398 * function allocates memory, remember to free!
399 *
400 * @param dev_desc - pointer block device descriptor
401 * @param str_part - pointer to string with partition information
402 * @param str_disk_guid - pointer to pointer to allocated string with disk guid
403 * @param partitions - pointer to pointer to allocated partitions array
404 * @param parts_count - number of partitions
405 *
406 * @return - zero on success, otherwise error
407 *
408 */
Simon Glass4101f682016-02-29 15:25:34 -0700409static int set_gpt_info(struct blk_desc *dev_desc,
Piotr Wilczek8b096232012-12-11 11:09:47 +0100410 const char *str_part,
411 char **str_disk_guid,
Simon Glass05289792020-05-10 11:39:57 -0600412 struct disk_partition **partitions,
Piotr Wilczek8b096232012-12-11 11:09:47 +0100413 u8 *parts_count)
414{
415 char *tok, *str, *s;
416 int i;
417 char *val, *p;
418 int p_count;
Simon Glass05289792020-05-10 11:39:57 -0600419 struct disk_partition *parts;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100420 int errno = 0;
Piotr Wilczek3e34cf72013-01-27 22:59:25 +0000421 uint64_t size_ll, start_ll;
Michael Trimarchi6663623562016-06-08 10:18:16 +0200422 lbaint_t offset = 0;
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700423 int max_str_part = calc_parts_list_len(MAX_SEARCH_PARTITIONS);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100424
Egbert Eich619f0fd2013-10-04 18:53:04 +0200425 debug("%s: lba num: 0x%x %d\n", __func__,
Piotr Wilczek8b096232012-12-11 11:09:47 +0100426 (unsigned int)dev_desc->lba, (unsigned int)dev_desc->lba);
427
428 if (str_part == NULL)
429 return -1;
430
431 str = strdup(str_part);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700432 if (str == NULL)
433 return -ENOMEM;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100434
435 /* extract disk guid */
436 s = str;
Rob Herring0c7e8d12015-01-26 09:44:18 -0600437 val = extract_val(str, "uuid_disk");
Piotr Wilczek8b096232012-12-11 11:09:47 +0100438 if (!val) {
Rob Herring0c7e8d12015-01-26 09:44:18 -0600439#ifdef CONFIG_RANDOM_UUID
440 *str_disk_guid = malloc(UUID_STR_LEN + 1);
Tom Rinibf52fcd2017-10-07 11:27:59 -0400441 if (*str_disk_guid == NULL)
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700442 return -ENOMEM;
Rob Herring0c7e8d12015-01-26 09:44:18 -0600443 gen_rand_uuid_str(*str_disk_guid, UUID_STR_FORMAT_STD);
444#else
Piotr Wilczek8b096232012-12-11 11:09:47 +0100445 free(str);
446 return -2;
Rob Herring0c7e8d12015-01-26 09:44:18 -0600447#endif
448 } else {
449 val = strsep(&val, ";");
450 if (extract_env(val, &p))
451 p = val;
452 *str_disk_guid = strdup(p);
453 free(val);
454 /* Move s to first partition */
455 strsep(&s, ";");
Piotr Wilczek8b096232012-12-11 11:09:47 +0100456 }
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700457 if (s == NULL) {
458 printf("Error: is the partitions string NULL-terminated?\n");
459 return -EINVAL;
460 }
461 if (strnlen(s, max_str_part) == 0)
Piotr Wilczek8b096232012-12-11 11:09:47 +0100462 return -3;
463
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700464 i = strnlen(s, max_str_part) - 1;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100465 if (s[i] == ';')
466 s[i] = '\0';
467
468 /* calculate expected number of partitions */
469 p_count = 1;
470 p = s;
471 while (*p) {
472 if (*p++ == ';')
473 p_count++;
474 }
475
476 /* allocate memory for partitions */
Simon Glass05289792020-05-10 11:39:57 -0600477 parts = calloc(sizeof(struct disk_partition), p_count);
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700478 if (parts == NULL)
479 return -ENOMEM;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100480
Robert P. J. Day1f8b5462013-08-21 11:39:19 -0400481 /* retrieve partitions data from string */
Piotr Wilczek8b096232012-12-11 11:09:47 +0100482 for (i = 0; i < p_count; i++) {
483 tok = strsep(&s, ";");
484
485 if (tok == NULL)
486 break;
487
488 /* uuid */
489 val = extract_val(tok, "uuid");
Rob Herring0c7e8d12015-01-26 09:44:18 -0600490 if (!val) {
491 /* 'uuid' is optional if random uuid's are enabled */
492#ifdef CONFIG_RANDOM_UUID
493 gen_rand_uuid_str(parts[i].uuid, UUID_STR_FORMAT_STD);
494#else
Piotr Wilczek8b096232012-12-11 11:09:47 +0100495 errno = -4;
496 goto err;
Rob Herring0c7e8d12015-01-26 09:44:18 -0600497#endif
498 } else {
499 if (extract_env(val, &p))
500 p = val;
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700501 if (strnlen(p, max_str_part) >= sizeof(parts[i].uuid)) {
Rob Herring0c7e8d12015-01-26 09:44:18 -0600502 printf("Wrong uuid format for partition %d\n", i);
503 errno = -4;
504 goto err;
505 }
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700506 strncpy((char *)parts[i].uuid, p, max_str_part);
Rob Herring0c7e8d12015-01-26 09:44:18 -0600507 free(val);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100508 }
Patrick Delaunay7561b252015-10-27 11:00:27 +0100509#ifdef CONFIG_PARTITION_TYPE_GUID
510 /* guid */
511 val = extract_val(tok, "type");
512 if (val) {
513 /* 'type' is optional */
514 if (extract_env(val, &p))
515 p = val;
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700516 if (strnlen(p, max_str_part) >= sizeof(parts[i].type_guid)) {
Patrick Delaunay7561b252015-10-27 11:00:27 +0100517 printf("Wrong type guid format for partition %d\n",
518 i);
519 errno = -4;
520 goto err;
521 }
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700522 strncpy((char *)parts[i].type_guid, p, max_str_part);
Patrick Delaunay7561b252015-10-27 11:00:27 +0100523 free(val);
524 }
525#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +0100526 /* name */
527 val = extract_val(tok, "name");
528 if (!val) { /* name is mandatory */
529 errno = -4;
530 goto err;
531 }
532 if (extract_env(val, &p))
533 p = val;
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700534 if (strnlen(p, max_str_part) >= sizeof(parts[i].name)) {
Piotr Wilczek8b096232012-12-11 11:09:47 +0100535 errno = -4;
536 goto err;
537 }
Alison Chaiken2fcaa412017-07-04 11:19:46 -0700538 strncpy((char *)parts[i].name, p, max_str_part);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100539 free(val);
540
541 /* size */
542 val = extract_val(tok, "size");
543 if (!val) { /* 'size' is mandatory */
544 errno = -4;
545 goto err;
546 }
547 if (extract_env(val, &p))
548 p = val;
Michael Trimarchi6663623562016-06-08 10:18:16 +0200549 if ((strcmp(p, "-") == 0)) {
Kever Yangc2fdd342016-07-29 11:12:18 +0800550 /* Let part efi module to auto extend the size */
551 parts[i].size = 0;
Michael Trimarchi6663623562016-06-08 10:18:16 +0200552 } else {
553 size_ll = ustrtoull(p, &p, 0);
554 parts[i].size = lldiv(size_ll, dev_desc->blksz);
555 }
556
Piotr Wilczek8b096232012-12-11 11:09:47 +0100557 free(val);
558
559 /* start address */
560 val = extract_val(tok, "start");
561 if (val) { /* start address is optional */
562 if (extract_env(val, &p))
563 p = val;
Piotr Wilczek3e34cf72013-01-27 22:59:25 +0000564 start_ll = ustrtoull(p, &p, 0);
565 parts[i].start = lldiv(start_ll, dev_desc->blksz);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100566 free(val);
567 }
Patrick Delaunaycfdaf4c2015-11-17 11:36:52 +0100568
Michael Trimarchi6663623562016-06-08 10:18:16 +0200569 offset += parts[i].size + parts[i].start;
570
Patrick Delaunaycfdaf4c2015-11-17 11:36:52 +0100571 /* bootable */
572 if (found_key(tok, "bootable"))
Heinrich Schuchardt25801ac2020-03-19 13:49:34 +0100573 parts[i].bootable = PART_BOOTABLE;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100574 }
575
576 *parts_count = p_count;
577 *partitions = parts;
578 free(str);
579
580 return 0;
581err:
582 free(str);
583 free(*str_disk_guid);
584 free(parts);
585
586 return errno;
587}
588
Simon Glass4101f682016-02-29 15:25:34 -0700589static int gpt_default(struct blk_desc *blk_dev_desc, const char *str_part)
Piotr Wilczek8b096232012-12-11 11:09:47 +0100590{
591 int ret;
592 char *str_disk_guid;
593 u8 part_count = 0;
Simon Glass05289792020-05-10 11:39:57 -0600594 struct disk_partition *partitions = NULL;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100595
Piotr Wilczek8b096232012-12-11 11:09:47 +0100596 /* fill partitions */
Egbert Eich619f0fd2013-10-04 18:53:04 +0200597 ret = set_gpt_info(blk_dev_desc, str_part,
Piotr Wilczek8b096232012-12-11 11:09:47 +0100598 &str_disk_guid, &partitions, &part_count);
599 if (ret) {
600 if (ret == -1)
601 printf("No partition list provided\n");
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 /* save partitions layout to disk */
Rob Herringa150e6c2015-01-26 09:43:15 -0600610 ret = gpt_restore(blk_dev_desc, str_disk_guid, partitions, part_count);
Piotr Wilczek8b096232012-12-11 11:09:47 +0100611 free(str_disk_guid);
612 free(partitions);
613
Rob Herringa150e6c2015-01-26 09:43:15 -0600614 return ret;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100615}
616
Simon Glass4101f682016-02-29 15:25:34 -0700617static int gpt_verify(struct blk_desc *blk_dev_desc, const char *str_part)
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100618{
619 ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1,
620 blk_dev_desc->blksz);
Simon Glass05289792020-05-10 11:39:57 -0600621 struct disk_partition *partitions = NULL;
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100622 gpt_entry *gpt_pte = NULL;
623 char *str_disk_guid;
624 u8 part_count = 0;
625 int ret = 0;
626
627 /* fill partitions */
628 ret = set_gpt_info(blk_dev_desc, str_part,
629 &str_disk_guid, &partitions, &part_count);
630 if (ret) {
631 if (ret == -1) {
632 printf("No partition list provided - only basic check\n");
633 ret = gpt_verify_headers(blk_dev_desc, gpt_head,
634 &gpt_pte);
635 goto out;
636 }
637 if (ret == -2)
638 printf("Missing disk guid\n");
639 if ((ret == -3) || (ret == -4))
640 printf("Partition list incomplete\n");
641 return -1;
642 }
643
644 /* Check partition layout with provided pattern */
645 ret = gpt_verify_partitions(blk_dev_desc, partitions, part_count,
646 gpt_head, &gpt_pte);
647 free(str_disk_guid);
648 free(partitions);
649 out:
650 free(gpt_pte);
651 return ret;
652}
653
Corneliu Doban12fc1f32020-11-09 11:49:16 +0530654/**
655 * gpt_enumerate() - Enumerate partition names into environment variable.
656 *
657 * Enumerate partition names. Partition names are stored in gpt_partition_list
658 * environment variable. Each partition name is delimited by space.
659 *
660 * @desc: block device descriptor
661 *
662 * @Return: '0' on success and -ve error on failure
663 */
664static int gpt_enumerate(struct blk_desc *desc)
665{
666 struct part_driver *first_drv, *part_drv;
667 int str_len = 0, tmp_len;
668 char part_list[2048];
669 int n_drvs;
670 char *ptr;
671
672 part_list[0] = 0;
673 n_drvs = part_driver_get_count();
674 if (!n_drvs) {
675 printf("Failed to get partition driver count\n");
676 return -ENOENT;
677 }
678
679 first_drv = part_driver_get_first();
680 for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
681 struct disk_partition pinfo;
682 int ret;
683 int i;
684
685 for (i = 1; i < part_drv->max_entries; i++) {
686 ret = part_drv->get_info(desc, i, &pinfo);
687 if (ret) {
688 /* no more entries in table */
689 break;
690 }
691
692 ptr = &part_list[str_len];
693 tmp_len = strlen((const char *)pinfo.name);
694 str_len += tmp_len;
695 /* +1 for space */
696 str_len++;
697 if (str_len > sizeof(part_list)) {
698 printf("Error insufficient memory\n");
699 return -ENOMEM;
700 }
701 strcpy(ptr, (const char *)pinfo.name);
702 /* One byte for space(" ") delimiter */
703 ptr[tmp_len] = ' ';
704 }
705 }
706 if (*part_list)
707 part_list[strlen(part_list) - 1] = 0;
708 debug("setenv gpt_partition_list %s\n", part_list);
709
710 return env_set("gpt_partition_list", part_list);
711}
712
713/**
714 * gpt_setenv_part_variables() - setup partition environmental variables
715 *
716 * Setup the gpt_partition_name, gpt_partition_entry, gpt_partition_addr
717 * and gpt_partition_size environment variables.
718 *
719 * @pinfo: pointer to disk partition
720 * @i: partition entry
721 *
722 * @Return: '0' on success and -ENOENT on failure
723 */
724static int gpt_setenv_part_variables(struct disk_partition *pinfo, int i)
725{
726 int ret;
727
728 ret = env_set_hex("gpt_partition_addr", pinfo->start);
729 if (ret)
730 goto fail;
731
732 ret = env_set_hex("gpt_partition_size", pinfo->size);
733 if (ret)
734 goto fail;
735
736 ret = env_set_ulong("gpt_partition_entry", i);
737 if (ret)
738 goto fail;
739
740 ret = env_set("gpt_partition_name", (const char *)pinfo->name);
741 if (ret)
742 goto fail;
743
744 return 0;
745
746fail:
747 return -ENOENT;
748}
749
750/**
751 * gpt_setenv() - Dynamically setup environment variables.
752 *
753 * Dynamically setup environment variables for name, index, offset and size
754 * for partition in GPT table after running "gpt setenv" for a partition name.
755 *
756 * @desc: block device descriptor
757 * @name: partition name
758 *
759 * @Return: '0' on success and -ve err on failure
760 */
761static int gpt_setenv(struct blk_desc *desc, const char *name)
762{
763 struct part_driver *first_drv, *part_drv;
764 int n_drvs;
765 int ret = -1;
766
767 n_drvs = part_driver_get_count();
768 if (!n_drvs) {
769 printf("Failed to get partition driver count\n");
770 goto fail;
771 }
772
773 first_drv = part_driver_get_first();
774 for (part_drv = first_drv; part_drv != first_drv + n_drvs; part_drv++) {
775 struct disk_partition pinfo;
776 int i;
777
778 for (i = 1; i < part_drv->max_entries; i++) {
779 ret = part_drv->get_info(desc, i, &pinfo);
780 if (ret) {
781 /* no more entries in table */
782 break;
783 }
784
785 if (!strcmp(name, (const char *)pinfo.name)) {
786 /* match found, setup environment variables */
787 ret = gpt_setenv_part_variables(&pinfo, i);
788 if (ret)
789 goto fail;
790
791 return 0;
792 }
793 }
794 }
795
796fail:
797 return ret;
798}
799
Alison Chaiken73d6d182017-06-25 16:43:23 -0700800static int do_disk_guid(struct blk_desc *dev_desc, char * const namestr)
801{
802 int ret;
803 char disk_guid[UUID_STR_LEN + 1];
804
805 ret = get_disk_guid(dev_desc, disk_guid);
806 if (ret < 0)
807 return CMD_RET_FAILURE;
808
809 if (namestr)
Simon Glass382bee52017-08-03 12:22:09 -0600810 env_set(namestr, disk_guid);
Alison Chaiken73d6d182017-06-25 16:43:23 -0700811 else
812 printf("%s\n", disk_guid);
813
814 return ret;
815}
816
Alison Chaiken203f9b42017-07-04 11:19:18 -0700817#ifdef CONFIG_CMD_GPT_RENAME
818static int do_rename_gpt_parts(struct blk_desc *dev_desc, char *subcomm,
819 char *name1, char *name2)
820{
821 struct list_head *pos;
822 struct disk_part *curr;
Simon Glass05289792020-05-10 11:39:57 -0600823 struct disk_partition *new_partitions = NULL;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700824 char disk_guid[UUID_STR_LEN + 1];
Tom Rini5749faa2020-01-21 11:53:38 -0500825 char *partitions_list, *str_disk_guid = NULL;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700826 u8 part_count = 0;
827 int partlistlen, ret, numparts = 0, partnum, i = 1, ctr1 = 0, ctr2 = 0;
828
829 if ((subcomm == NULL) || (name1 == NULL) || (name2 == NULL) ||
830 (strcmp(subcomm, "swap") && (strcmp(subcomm, "rename"))))
831 return -EINVAL;
832
833 ret = get_disk_guid(dev_desc, disk_guid);
834 if (ret < 0)
835 return ret;
Alison Chaiken18030d02017-09-26 07:42:28 -0700836 /*
837 * Allocates disk_partitions, requiring matching call to del_gpt_info()
838 * if successful.
839 */
Alison Chaiken203f9b42017-07-04 11:19:18 -0700840 numparts = get_gpt_info(dev_desc);
841 if (numparts <= 0)
842 return numparts ? numparts : -ENODEV;
843
844 partlistlen = calc_parts_list_len(numparts);
845 partitions_list = malloc(partlistlen);
Alison Chaiken18030d02017-09-26 07:42:28 -0700846 if (!partitions_list) {
847 del_gpt_info();
Alison Chaiken203f9b42017-07-04 11:19:18 -0700848 return -ENOMEM;
Alison Chaiken18030d02017-09-26 07:42:28 -0700849 }
Alison Chaiken203f9b42017-07-04 11:19:18 -0700850 memset(partitions_list, '\0', partlistlen);
851
852 ret = create_gpt_partitions_list(numparts, disk_guid, partitions_list);
Alison Chaiken18030d02017-09-26 07:42:28 -0700853 if (ret < 0) {
854 free(partitions_list);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700855 return ret;
Alison Chaiken18030d02017-09-26 07:42:28 -0700856 }
Alison Chaiken203f9b42017-07-04 11:19:18 -0700857 /*
858 * Uncomment the following line to print a string that 'gpt write'
859 * or 'gpt verify' will accept as input.
860 */
861 debug("OLD partitions_list is %s with %u chars\n", partitions_list,
862 (unsigned)strlen(partitions_list));
863
Alison Chaiken18030d02017-09-26 07:42:28 -0700864 /* set_gpt_info allocates new_partitions and str_disk_guid */
Alison Chaiken203f9b42017-07-04 11:19:18 -0700865 ret = set_gpt_info(dev_desc, partitions_list, &str_disk_guid,
866 &new_partitions, &part_count);
Tom Rini5749faa2020-01-21 11:53:38 -0500867 if (ret < 0)
868 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700869
870 if (!strcmp(subcomm, "swap")) {
871 if ((strlen(name1) > PART_NAME_LEN) || (strlen(name2) > PART_NAME_LEN)) {
872 printf("Names longer than %d characters are truncated.\n", PART_NAME_LEN);
Alison Chaiken18030d02017-09-26 07:42:28 -0700873 ret = -EINVAL;
874 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700875 }
876 list_for_each(pos, &disk_partitions) {
877 curr = list_entry(pos, struct disk_part, list);
878 if (!strcmp((char *)curr->gpt_part_info.name, name1)) {
879 strcpy((char *)curr->gpt_part_info.name, name2);
880 ctr1++;
881 } else if (!strcmp((char *)curr->gpt_part_info.name, name2)) {
882 strcpy((char *)curr->gpt_part_info.name, name1);
883 ctr2++;
884 }
885 }
886 if ((ctr1 + ctr2 < 2) || (ctr1 != ctr2)) {
887 printf("Cannot swap partition names except in pairs.\n");
Alison Chaiken18030d02017-09-26 07:42:28 -0700888 ret = -EINVAL;
889 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700890 }
891 } else { /* rename */
892 if (strlen(name2) > PART_NAME_LEN) {
893 printf("Names longer than %d characters are truncated.\n", PART_NAME_LEN);
Alison Chaiken18030d02017-09-26 07:42:28 -0700894 ret = -EINVAL;
895 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700896 }
897 partnum = (int)simple_strtol(name1, NULL, 10);
898 if ((partnum < 0) || (partnum > numparts)) {
899 printf("Illegal partition number %s\n", name1);
Alison Chaiken18030d02017-09-26 07:42:28 -0700900 ret = -EINVAL;
901 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700902 }
903 ret = part_get_info(dev_desc, partnum, new_partitions);
904 if (ret < 0)
Alison Chaiken18030d02017-09-26 07:42:28 -0700905 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700906
907 /* U-Boot partition numbering starts at 1 */
908 list_for_each(pos, &disk_partitions) {
909 curr = list_entry(pos, struct disk_part, list);
910 if (i == partnum) {
911 strcpy((char *)curr->gpt_part_info.name, name2);
912 break;
913 }
914 i++;
915 }
916 }
917
918 ret = create_gpt_partitions_list(numparts, disk_guid, partitions_list);
919 if (ret < 0)
Alison Chaiken18030d02017-09-26 07:42:28 -0700920 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700921 debug("NEW partitions_list is %s with %u chars\n", partitions_list,
922 (unsigned)strlen(partitions_list));
923
924 ret = set_gpt_info(dev_desc, partitions_list, &str_disk_guid,
925 &new_partitions, &part_count);
Alison Chaiken18030d02017-09-26 07:42:28 -0700926 /*
927 * Even though valid pointers are here passed into set_gpt_info(),
928 * it mallocs again, and there's no way to tell which failed.
929 */
Tom Rini5749faa2020-01-21 11:53:38 -0500930 if (ret < 0)
931 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700932
933 debug("Writing new partition table\n");
934 ret = gpt_restore(dev_desc, disk_guid, new_partitions, numparts);
935 if (ret < 0) {
936 printf("Writing new partition table failed\n");
Alison Chaiken18030d02017-09-26 07:42:28 -0700937 goto out;
Alison Chaiken203f9b42017-07-04 11:19:18 -0700938 }
939
940 debug("Reading back new partition table\n");
Alison Chaiken18030d02017-09-26 07:42:28 -0700941 /*
942 * Empty the existing disk_partitions list, as otherwise the memory in
943 * the original list is unreachable.
944 */
945 del_gpt_info();
Alison Chaiken203f9b42017-07-04 11:19:18 -0700946 numparts = get_gpt_info(dev_desc);
Alison Chaiken18030d02017-09-26 07:42:28 -0700947 if (numparts <= 0) {
948 ret = numparts ? numparts : -ENODEV;
949 goto out;
950 }
Alison Chaiken203f9b42017-07-04 11:19:18 -0700951 printf("new partition table with %d partitions is:\n", numparts);
952 print_gpt_info();
Alison Chaiken18030d02017-09-26 07:42:28 -0700953 out:
Tom Rini5749faa2020-01-21 11:53:38 -0500954 del_gpt_info();
955#ifdef CONFIG_RANDOM_UUID
Heinrich Schuchardtb142d0a2020-04-28 21:40:13 +0200956 free(str_disk_guid);
Tom Rini5749faa2020-01-21 11:53:38 -0500957#endif
Heinrich Schuchardtb142d0a2020-04-28 21:40:13 +0200958 free(new_partitions);
Alison Chaiken18030d02017-09-26 07:42:28 -0700959 free(partitions_list);
Alison Chaiken203f9b42017-07-04 11:19:18 -0700960 return ret;
961}
962#endif
963
Piotr Wilczek8b096232012-12-11 11:09:47 +0100964/**
965 * do_gpt(): Perform GPT operations
966 *
967 * @param cmdtp - command name
968 * @param flag
969 * @param argc
970 * @param argv
971 *
972 * @return zero on success; otherwise error
973 */
Simon Glass09140112020-05-10 11:40:03 -0600974static int do_gpt(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
Piotr Wilczek8b096232012-12-11 11:09:47 +0100975{
976 int ret = CMD_RET_SUCCESS;
977 int dev = 0;
Egbert Eich619f0fd2013-10-04 18:53:04 +0200978 char *ep;
Simon Glass4101f682016-02-29 15:25:34 -0700979 struct blk_desc *blk_dev_desc = NULL;
Piotr Wilczek8b096232012-12-11 11:09:47 +0100980
Alison Chaiken203f9b42017-07-04 11:19:18 -0700981#ifndef CONFIG_CMD_GPT_RENAME
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100982 if (argc < 4 || argc > 5)
Alison Chaiken203f9b42017-07-04 11:19:18 -0700983#else
984 if (argc < 4 || argc > 6)
985#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +0100986 return CMD_RET_USAGE;
987
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100988 dev = (int)simple_strtoul(argv[3], &ep, 10);
989 if (!ep || ep[0] != '\0') {
990 printf("'%s' is not a number\n", argv[3]);
991 return CMD_RET_USAGE;
992 }
Simon Glassdb1d9e72016-02-29 15:25:42 -0700993 blk_dev_desc = blk_get_dev(argv[2], dev);
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +0100994 if (!blk_dev_desc) {
995 printf("%s: %s dev %d NOT available\n",
996 __func__, argv[2], dev);
997 return CMD_RET_FAILURE;
998 }
999
Piotr Wilczek8b096232012-12-11 11:09:47 +01001000 if ((strcmp(argv[1], "write") == 0) && (argc == 5)) {
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +01001001 printf("Writing GPT: ");
Przemyslaw Marczak39206382014-04-02 10:20:06 +02001002 ret = gpt_default(blk_dev_desc, argv[4]);
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +01001003 } else if ((strcmp(argv[1], "verify") == 0)) {
1004 ret = gpt_verify(blk_dev_desc, argv[4]);
1005 printf("Verify GPT: ");
Corneliu Doban12fc1f32020-11-09 11:49:16 +05301006 } else if ((strcmp(argv[1], "setenv") == 0)) {
1007 ret = gpt_setenv(blk_dev_desc, argv[4]);
1008 } else if ((strcmp(argv[1], "enumerate") == 0)) {
1009 ret = gpt_enumerate(blk_dev_desc);
Alison Chaiken73d6d182017-06-25 16:43:23 -07001010 } else if (strcmp(argv[1], "guid") == 0) {
1011 ret = do_disk_guid(blk_dev_desc, argv[4]);
Alison Chaiken09a49932017-07-04 11:18:50 -07001012#ifdef CONFIG_CMD_GPT_RENAME
1013 } else if (strcmp(argv[1], "read") == 0) {
Farhan Ali653cd922021-02-26 10:17:33 -08001014 ret = do_get_gpt_info(blk_dev_desc, (argc == 5) ? argv[4] : NULL);
Alison Chaiken203f9b42017-07-04 11:19:18 -07001015 } else if ((strcmp(argv[1], "swap") == 0) ||
1016 (strcmp(argv[1], "rename") == 0)) {
1017 ret = do_rename_gpt_parts(blk_dev_desc, argv[1], argv[4], argv[5]);
Alison Chaiken09a49932017-07-04 11:18:50 -07001018#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +01001019 } else {
1020 return CMD_RET_USAGE;
1021 }
Lukasz Majewskibbb9ffa2015-11-20 08:06:17 +01001022
1023 if (ret) {
1024 printf("error!\n");
1025 return CMD_RET_FAILURE;
1026 }
1027
1028 printf("success!\n");
1029 return CMD_RET_SUCCESS;
Piotr Wilczek8b096232012-12-11 11:09:47 +01001030}
1031
1032U_BOOT_CMD(gpt, CONFIG_SYS_MAXARGS, 1, do_gpt,
1033 "GUID Partition Table",
Robert P. J. Day1f8b5462013-08-21 11:39:19 -04001034 "<command> <interface> <dev> <partitions_list>\n"
Lukasz Majewski74f889b2015-11-13 07:42:10 +01001035 " - GUID partition table restoration and validity check\n"
1036 " Restore or verify GPT information on a device connected\n"
Piotr Wilczek8b096232012-12-11 11:09:47 +01001037 " to interface\n"
Lukasz Majewski74f889b2015-11-13 07:42:10 +01001038 " Example usage:\n"
1039 " gpt write mmc 0 $partitions\n"
Corneliu Doban12fc1f32020-11-09 11:49:16 +05301040 " - write the GPT to device\n"
Lukasz Majewski74f889b2015-11-13 07:42:10 +01001041 " gpt verify mmc 0 $partitions\n"
Corneliu Doban12fc1f32020-11-09 11:49:16 +05301042 " - verify the GPT on device against $partitions\n"
1043 " gpt setenv mmc 0 $name\n"
1044 " - setup environment variables for partition $name:\n"
1045 " gpt_partition_addr, gpt_partition_size,\n"
1046 " gpt_partition_name, gpt_partition_entry\n"
1047 " gpt enumerate mmc 0\n"
1048 " - store list of partitions to gpt_partition_list environment variable\n"
1049 " read <interface> <dev>\n"
1050 " - read GPT into a data structure for manipulation\n"
Eugeniu Roscad0266092019-04-30 04:53:46 +02001051 " gpt guid <interface> <dev>\n"
Alison Chaiken73d6d182017-06-25 16:43:23 -07001052 " - print disk GUID\n"
Eugeniu Roscad0266092019-04-30 04:53:46 +02001053 " gpt guid <interface> <dev> <varname>\n"
Alison Chaiken73d6d182017-06-25 16:43:23 -07001054 " - set environment variable to disk GUID\n"
1055 " Example usage:\n"
1056 " gpt guid mmc 0\n"
1057 " gpt guid mmc 0 varname\n"
Alison Chaiken203f9b42017-07-04 11:19:18 -07001058#ifdef CONFIG_CMD_GPT_RENAME
1059 "gpt partition renaming commands:\n"
Farhan Ali653cd922021-02-26 10:17:33 -08001060 " gpt read <interface> <dev> [<varname>]\n"
Eugeniu Roscad0266092019-04-30 04:53:46 +02001061 " - read GPT into a data structure for manipulation\n"
Farhan Ali653cd922021-02-26 10:17:33 -08001062 " - read GPT partitions into environment variable\n"
Eugeniu Roscad0266092019-04-30 04:53:46 +02001063 " gpt swap <interface> <dev> <name1> <name2>\n"
Alison Chaiken203f9b42017-07-04 11:19:18 -07001064 " - change all partitions named name1 to name2\n"
1065 " and vice-versa\n"
Eugeniu Roscad0266092019-04-30 04:53:46 +02001066 " gpt rename <interface> <dev> <part> <name>\n"
Alison Chaiken203f9b42017-07-04 11:19:18 -07001067 " - rename the specified partition\n"
1068 " Example usage:\n"
1069 " gpt swap mmc 0 foo bar\n"
1070 " gpt rename mmc 0 3 foo\n"
1071#endif
Piotr Wilczek8b096232012-12-11 11:09:47 +01001072);