/*
* cmd_gpt.c -- GPT (GUID Partition Table) handling command
*
+ * Copyright (C) 2015
+ * Lukasz Majewski <l.majewski@majess.pl>
+ *
* Copyright (C) 2012 Samsung Electronics
* author: Lukasz Majewski <l.majewski@samsung.com>
* author: Piotr Wilczek <p.wilczek@samsung.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
#include <command.h>
-#include <mmc.h>
#include <part_efi.h>
#include <exports.h>
#include <linux/ctype.h>
+#include <div64.h>
+#include <memalign.h>
#ifndef CONFIG_PARTITION_UUIDS
#error CONFIG_PARTITION_UUIDS must be enabled for CONFIG_CMD_GPT to be enabled
*
* @return - zero on successful expand and env is set
*/
-static char extract_env(const char *str, char **env)
+static int extract_env(const char *str, char **env)
{
+ int ret = -1;
char *e, *s;
+#ifdef CONFIG_RANDOM_UUID
+ char uuid_str[UUID_STR_LEN + 1];
+#endif
if (!str || strlen(str) < 4)
return -1;
- if ((strncmp(str, "${", 2) == 0) && (str[strlen(str) - 1] == '}')) {
- s = strdup(str);
- if (s == NULL)
- return -1;
- memset(s + strlen(s) - 1, '\0', 1);
- memmove(s, s + 2, strlen(s) - 1);
+ if (!((strncmp(str, "${", 2) == 0) && (str[strlen(str) - 1] == '}')))
+ return -1;
+
+ s = strdup(str);
+ if (s == NULL)
+ return -1;
+
+ memset(s + strlen(s) - 1, '\0', 1);
+ memmove(s, s + 2, strlen(s) - 1);
+
+ e = getenv(s);
+ if (e == NULL) {
+#ifdef CONFIG_RANDOM_UUID
+ debug("%s unset. ", str);
+ gen_rand_uuid_str(uuid_str, UUID_STR_FORMAT_STD);
+ setenv(s, uuid_str);
+
e = getenv(s);
- free(s);
- if (e == NULL) {
- printf("Environmental '%s' not set\n", str);
- return -1; /* env not set */
+ if (e) {
+ debug("Set to random.\n");
+ ret = 0;
+ } else {
+ debug("Can't get random UUID.\n");
}
- *env = e;
- return 0;
+#else
+ debug("%s unset.\n", str);
+#endif
+ } else {
+ debug("%s get from environment.\n", str);
+ ret = 0;
}
- return -1;
+ *env = e;
+ free(s);
+
+ return ret;
}
/**
return new;
}
+/**
+ * found_key(): Found key without value in parameter list (comma separated).
+ *
+ * @param str - pointer to string with key
+ * @param key - pointer to the key to search for
+ *
+ * @return - true on found key
+ */
+static bool found_key(const char *str, const char *key)
+{
+ char *k;
+ char *s, *strcopy;
+ bool result = false;
+
+ strcopy = strdup(str);
+ if (!strcopy)
+ return NULL;
+
+ s = strcopy;
+ while (s) {
+ k = strsep(&s, ",");
+ if (!k)
+ break;
+ if (strcmp(k, key) == 0) {
+ result = true;
+ break;
+ }
+ }
+
+ free(strcopy);
+
+ return result;
+}
+
/**
* set_gpt_info(): Fill partition information from string
* function allocates memory, remember to free!
int p_count;
disk_partition_t *parts;
int errno = 0;
+ uint64_t size_ll, start_ll;
- debug("%s: MMC lba num: 0x%x %d\n", __func__,
+ debug("%s: lba num: 0x%x %d\n", __func__,
(unsigned int)dev_desc->lba, (unsigned int)dev_desc->lba);
if (str_part == NULL)
/* extract disk guid */
s = str;
- tok = strsep(&s, ";");
- val = extract_val(tok, "uuid_disk");
+ val = extract_val(str, "uuid_disk");
if (!val) {
+#ifdef CONFIG_RANDOM_UUID
+ *str_disk_guid = malloc(UUID_STR_LEN + 1);
+ gen_rand_uuid_str(*str_disk_guid, UUID_STR_FORMAT_STD);
+#else
free(str);
return -2;
+#endif
+ } else {
+ val = strsep(&val, ";");
+ if (extract_env(val, &p))
+ p = val;
+ *str_disk_guid = strdup(p);
+ free(val);
+ /* Move s to first partition */
+ strsep(&s, ";");
}
- if (extract_env(val, &p))
- p = val;
- *str_disk_guid = strdup(p);
- free(val);
-
if (strlen(s) == 0)
return -3;
/* allocate memory for partitions */
parts = calloc(sizeof(disk_partition_t), p_count);
- /* retrive partions data from string */
+ /* retrieve partitions data from string */
for (i = 0; i < p_count; i++) {
tok = strsep(&s, ";");
/* uuid */
val = extract_val(tok, "uuid");
- if (!val) { /* 'uuid' is mandatory */
+ if (!val) {
+ /* 'uuid' is optional if random uuid's are enabled */
+#ifdef CONFIG_RANDOM_UUID
+ gen_rand_uuid_str(parts[i].uuid, UUID_STR_FORMAT_STD);
+#else
errno = -4;
goto err;
+#endif
+ } else {
+ if (extract_env(val, &p))
+ p = val;
+ if (strlen(p) >= sizeof(parts[i].uuid)) {
+ printf("Wrong uuid format for partition %d\n", i);
+ errno = -4;
+ goto err;
+ }
+ strcpy((char *)parts[i].uuid, p);
+ free(val);
}
- if (extract_env(val, &p))
- p = val;
- if (strlen(p) >= sizeof(parts[i].uuid)) {
- printf("Wrong uuid format for partition %d\n", i);
- errno = -4;
- goto err;
+#ifdef CONFIG_PARTITION_TYPE_GUID
+ /* guid */
+ val = extract_val(tok, "type");
+ if (val) {
+ /* 'type' is optional */
+ if (extract_env(val, &p))
+ p = val;
+ if (strlen(p) >= sizeof(parts[i].type_guid)) {
+ printf("Wrong type guid format for partition %d\n",
+ i);
+ errno = -4;
+ goto err;
+ }
+ strcpy((char *)parts[i].type_guid, p);
+ free(val);
}
- strcpy((char *)parts[i].uuid, p);
- free(val);
-
+#endif
/* name */
val = extract_val(tok, "name");
if (!val) { /* name is mandatory */
}
if (extract_env(val, &p))
p = val;
- parts[i].size = ustrtoul(p, &p, 0);
- parts[i].size /= dev_desc->blksz;
+ size_ll = ustrtoull(p, &p, 0);
+ parts[i].size = lldiv(size_ll, dev_desc->blksz);
free(val);
/* start address */
if (val) { /* start address is optional */
if (extract_env(val, &p))
p = val;
- parts[i].start = ustrtoul(p, &p, 0);
- parts[i].start /= dev_desc->blksz;
+ start_ll = ustrtoull(p, &p, 0);
+ parts[i].start = lldiv(start_ll, dev_desc->blksz);
free(val);
}
+
+ /* bootable */
+ if (found_key(tok, "bootable"))
+ parts[i].bootable = 1;
}
*parts_count = p_count;
return errno;
}
-static int gpt_mmc_default(int dev, const char *str_part)
+static int gpt_default(block_dev_desc_t *blk_dev_desc, const char *str_part)
{
int ret;
char *str_disk_guid;
u8 part_count = 0;
disk_partition_t *partitions = NULL;
- struct mmc *mmc = find_mmc_device(dev);
-
- if (mmc == NULL) {
- printf("%s: mmc dev %d NOT available\n", __func__, dev);
- return CMD_RET_FAILURE;
- }
-
- if (!str_part)
- return -1;
-
/* fill partitions */
- ret = set_gpt_info(&mmc->block_dev, str_part,
+ ret = set_gpt_info(blk_dev_desc, str_part,
&str_disk_guid, &partitions, &part_count);
if (ret) {
if (ret == -1)
}
/* save partitions layout to disk */
- gpt_restore(&mmc->block_dev, str_disk_guid, partitions, part_count);
+ ret = gpt_restore(blk_dev_desc, str_disk_guid, partitions, part_count);
free(str_disk_guid);
free(partitions);
- return 0;
+ return ret;
+}
+
+static int gpt_verify(block_dev_desc_t *blk_dev_desc, const char *str_part)
+{
+ ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1,
+ blk_dev_desc->blksz);
+ disk_partition_t *partitions = NULL;
+ gpt_entry *gpt_pte = NULL;
+ char *str_disk_guid;
+ u8 part_count = 0;
+ int ret = 0;
+
+ /* fill partitions */
+ ret = set_gpt_info(blk_dev_desc, str_part,
+ &str_disk_guid, &partitions, &part_count);
+ if (ret) {
+ if (ret == -1) {
+ printf("No partition list provided - only basic check\n");
+ ret = gpt_verify_headers(blk_dev_desc, gpt_head,
+ &gpt_pte);
+ goto out;
+ }
+ if (ret == -2)
+ printf("Missing disk guid\n");
+ if ((ret == -3) || (ret == -4))
+ printf("Partition list incomplete\n");
+ return -1;
+ }
+
+ /* Check partition layout with provided pattern */
+ ret = gpt_verify_partitions(blk_dev_desc, partitions, part_count,
+ gpt_head, &gpt_pte);
+ free(str_disk_guid);
+ free(partitions);
+ out:
+ free(gpt_pte);
+ return ret;
}
/**
{
int ret = CMD_RET_SUCCESS;
int dev = 0;
- char *pstr;
+ char *ep;
+ block_dev_desc_t *blk_dev_desc = NULL;
- if (argc < 5)
+ if (argc < 4 || argc > 5)
return CMD_RET_USAGE;
- /* command: 'write' */
+ dev = (int)simple_strtoul(argv[3], &ep, 10);
+ if (!ep || ep[0] != '\0') {
+ printf("'%s' is not a number\n", argv[3]);
+ return CMD_RET_USAGE;
+ }
+ blk_dev_desc = get_dev(argv[2], dev);
+ if (!blk_dev_desc) {
+ printf("%s: %s dev %d NOT available\n",
+ __func__, argv[2], dev);
+ return CMD_RET_FAILURE;
+ }
+
if ((strcmp(argv[1], "write") == 0) && (argc == 5)) {
- /* device: 'mmc' */
- if (strcmp(argv[2], "mmc") == 0) {
- /* check if 'dev' is a number */
- for (pstr = argv[3]; *pstr != '\0'; pstr++)
- if (!isdigit(*pstr)) {
- printf("'%s' is not a number\n",
- argv[3]);
- return CMD_RET_USAGE;
- }
- dev = (int)simple_strtoul(argv[3], NULL, 10);
- /* write to mmc */
- if (gpt_mmc_default(dev, argv[4]))
- return CMD_RET_FAILURE;
- }
+ printf("Writing GPT: ");
+ ret = gpt_default(blk_dev_desc, argv[4]);
+ } else if ((strcmp(argv[1], "verify") == 0)) {
+ ret = gpt_verify(blk_dev_desc, argv[4]);
+ printf("Verify GPT: ");
} else {
return CMD_RET_USAGE;
}
- return ret;
+
+ if (ret) {
+ printf("error!\n");
+ return CMD_RET_FAILURE;
+ }
+
+ printf("success!\n");
+ return CMD_RET_SUCCESS;
}
U_BOOT_CMD(gpt, CONFIG_SYS_MAXARGS, 1, do_gpt,
"GUID Partition Table",
- "<command> <interface> <dev> <partions_list>\n"
- " - GUID partition table restoration\n"
- " Restore GPT information on a device connected\n"
+ "<command> <interface> <dev> <partitions_list>\n"
+ " - GUID partition table restoration and validity check\n"
+ " Restore or verify GPT information on a device connected\n"
" to interface\n"
+ " Example usage:\n"
+ " gpt write mmc 0 $partitions\n"
+ " gpt verify mmc 0 $partitions\n"
);
projects / oweals / u-boot.git / blobdiff