* Copyright (C) 2008 RuggedCom, Inc.
* Richard Retanubun <RichardRetanubun@RuggedCom.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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+
*/
/*
*
* This limits the maximum size of addressable storage to < 2 Terra Bytes
*/
+#include <asm/unaligned.h>
#include <common.h>
#include <command.h>
#include <ide.h>
#include <part_efi.h>
#include <linux/ctype.h>
-#if defined(CONFIG_CMD_IDE) || \
- defined(CONFIG_CMD_SATA) || \
- defined(CONFIG_CMD_SCSI) || \
- defined(CONFIG_CMD_USB) || \
- defined(CONFIG_MMC) || \
- defined(CONFIG_SYSTEMACE)
+DECLARE_GLOBAL_DATA_PTR;
+#ifdef HAVE_BLOCK_DEVICE
/**
* efi_crc32() - EFI version of crc32 function
* @buf: buffer to calculate crc32 of
static int pmbr_part_valid(struct partition *part);
static int is_pmbr_valid(legacy_mbr * mbr);
-
static int is_gpt_valid(block_dev_desc_t * dev_desc, unsigned long long lba,
gpt_header * pgpt_head, gpt_entry ** pgpt_pte);
-
static gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * dev_desc,
gpt_header * pgpt_head);
-
static int is_pte_valid(gpt_entry * pte);
static char *print_efiname(gpt_entry *pte)
sizeof(efi_guid_t));
}
+#ifdef CONFIG_EFI_PARTITION
/*
* Public Functions (include/part.h)
*/
void print_part_efi(block_dev_desc_t * dev_desc)
{
- ALLOC_CACHE_ALIGN_BUFFER(gpt_header, gpt_head, 1);
+ ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz);
gpt_entry *gpt_pte = NULL;
int i = 0;
char uuid[37];
int get_partition_info_efi(block_dev_desc_t * dev_desc, int part,
disk_partition_t * info)
{
- ALLOC_CACHE_ALIGN_BUFFER(gpt_header, gpt_head, 1);
+ ALLOC_CACHE_ALIGN_BUFFER_PAD(gpt_header, gpt_head, 1, dev_desc->blksz);
gpt_entry *gpt_pte = NULL;
/* "part" argument must be at least 1 */
if (part > le32_to_cpu(gpt_head->num_partition_entries) ||
!is_pte_valid(&gpt_pte[part - 1])) {
- printf("%s: *** ERROR: Invalid partition number %d ***\n",
+ debug("%s: *** ERROR: Invalid partition number %d ***\n",
__func__, part);
+ free(gpt_pte);
return -1;
}
/* The ending LBA is inclusive, to calculate size, add 1 to it */
info->size = ((u64)le64_to_cpu(gpt_pte[part - 1].ending_lba) + 1)
- info->start;
- info->blksz = GPT_BLOCK_SIZE;
+ info->blksz = dev_desc->blksz;
sprintf((char *)info->name, "%s",
print_efiname(&gpt_pte[part - 1]));
uuid_string(gpt_pte[part - 1].unique_partition_guid.b, info->uuid);
#endif
- debug("%s: start 0x%lX, size 0x%lX, name %s", __func__,
- info->start, info->size, info->name);
+ debug("%s: start 0x" LBAF ", size 0x" LBAF ", name %s", __func__,
+ info->start, info->size, info->name);
/* Remember to free pte */
free(gpt_pte);
int test_part_efi(block_dev_desc_t * dev_desc)
{
- ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, legacymbr, 1);
+ ALLOC_CACHE_ALIGN_BUFFER_PAD(legacy_mbr, legacymbr, 1, dev_desc->blksz);
/* Read legacy MBR from block 0 and validate it */
if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)legacymbr) != 1)
return 0;
}
+/**
+ * set_protective_mbr(): Set the EFI protective MBR
+ * @param dev_desc - block device descriptor
+ *
+ * @return - zero on success, otherwise error
+ */
+static int set_protective_mbr(block_dev_desc_t *dev_desc)
+{
+ legacy_mbr *p_mbr;
+
+ /* Setup the Protective MBR */
+ p_mbr = calloc(1, sizeof(p_mbr));
+ if (p_mbr == NULL) {
+ printf("%s: calloc failed!\n", __func__);
+ return -1;
+ }
+ /* Append signature */
+ p_mbr->signature = MSDOS_MBR_SIGNATURE;
+ p_mbr->partition_record[0].sys_ind = EFI_PMBR_OSTYPE_EFI_GPT;
+ p_mbr->partition_record[0].start_sect = 1;
+ p_mbr->partition_record[0].nr_sects = (u32) dev_desc->lba;
+
+ /* Write MBR sector to the MMC device */
+ if (dev_desc->block_write(dev_desc->dev, 0, 1, p_mbr) != 1) {
+ printf("** Can't write to device %d **\n",
+ dev_desc->dev);
+ free(p_mbr);
+ return -1;
+ }
+
+ free(p_mbr);
+ return 0;
+}
+
+/**
+ * string_uuid(); Convert UUID stored as string to bytes
+ *
+ * @param uuid - UUID represented as string
+ * @param dst - GUID buffer
+ *
+ * @return return 0 on successful conversion
+ */
+static int string_uuid(char *uuid, u8 *dst)
+{
+ efi_guid_t guid;
+ u16 b, c, d;
+ u64 e;
+ u32 a;
+ u8 *p;
+ u8 i;
+
+ const u8 uuid_str_len = 36;
+
+ /* The UUID is written in text: */
+ /* 1 9 14 19 24 */
+ /* xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx */
+
+ debug("%s: uuid: %s\n", __func__, uuid);
+
+ if (strlen(uuid) != uuid_str_len)
+ return -1;
+
+ for (i = 0; i < uuid_str_len; i++) {
+ if ((i == 8) || (i == 13) || (i == 18) || (i == 23)) {
+ if (uuid[i] != '-')
+ return -1;
+ } else {
+ if (!isxdigit(uuid[i]))
+ return -1;
+ }
+ }
+
+ a = (u32)simple_strtoul(uuid, NULL, 16);
+ b = (u16)simple_strtoul(uuid + 9, NULL, 16);
+ c = (u16)simple_strtoul(uuid + 14, NULL, 16);
+ d = (u16)simple_strtoul(uuid + 19, NULL, 16);
+ e = (u64)simple_strtoull(uuid + 24, NULL, 16);
+
+ p = (u8 *) &e;
+ guid = EFI_GUID(a, b, c, d >> 8, d & 0xFF,
+ *(p + 5), *(p + 4), *(p + 3),
+ *(p + 2), *(p + 1) , *p);
+
+ memcpy(dst, guid.b, sizeof(efi_guid_t));
+
+ return 0;
+}
+
+int write_gpt_table(block_dev_desc_t *dev_desc,
+ gpt_header *gpt_h, gpt_entry *gpt_e)
+{
+ const int pte_blk_cnt = BLOCK_CNT((gpt_h->num_partition_entries
+ * sizeof(gpt_entry)), dev_desc);
+ u32 calc_crc32;
+ u64 val;
+
+ debug("max lba: %x\n", (u32) dev_desc->lba);
+ /* Setup the Protective MBR */
+ if (set_protective_mbr(dev_desc) < 0)
+ goto err;
+
+ /* Generate CRC for the Primary GPT Header */
+ calc_crc32 = efi_crc32((const unsigned char *)gpt_e,
+ le32_to_cpu(gpt_h->num_partition_entries) *
+ le32_to_cpu(gpt_h->sizeof_partition_entry));
+ gpt_h->partition_entry_array_crc32 = cpu_to_le32(calc_crc32);
+
+ calc_crc32 = efi_crc32((const unsigned char *)gpt_h,
+ le32_to_cpu(gpt_h->header_size));
+ gpt_h->header_crc32 = cpu_to_le32(calc_crc32);
+
+ /* Write the First GPT to the block right after the Legacy MBR */
+ if (dev_desc->block_write(dev_desc->dev, 1, 1, gpt_h) != 1)
+ goto err;
+
+ if (dev_desc->block_write(dev_desc->dev, 2, pte_blk_cnt, gpt_e)
+ != pte_blk_cnt)
+ goto err;
+
+ /* recalculate the values for the Second GPT Header */
+ val = le64_to_cpu(gpt_h->my_lba);
+ gpt_h->my_lba = gpt_h->alternate_lba;
+ gpt_h->alternate_lba = cpu_to_le64(val);
+ gpt_h->header_crc32 = 0;
+
+ calc_crc32 = efi_crc32((const unsigned char *)gpt_h,
+ le32_to_cpu(gpt_h->header_size));
+ gpt_h->header_crc32 = cpu_to_le32(calc_crc32);
+
+ if (dev_desc->block_write(dev_desc->dev,
+ le32_to_cpu(gpt_h->last_usable_lba + 1),
+ pte_blk_cnt, gpt_e) != pte_blk_cnt)
+ goto err;
+
+ if (dev_desc->block_write(dev_desc->dev,
+ le32_to_cpu(gpt_h->my_lba), 1, gpt_h) != 1)
+ goto err;
+
+ debug("GPT successfully written to block device!\n");
+ return 0;
+
+ err:
+ printf("** Can't write to device %d **\n", dev_desc->dev);
+ return -1;
+}
+
+int gpt_fill_pte(gpt_header *gpt_h, gpt_entry *gpt_e,
+ disk_partition_t *partitions, int parts)
+{
+ u32 offset = (u32)le32_to_cpu(gpt_h->first_usable_lba);
+ ulong start;
+ int i, k;
+ size_t efiname_len, dosname_len;
+#ifdef CONFIG_PARTITION_UUIDS
+ char *str_uuid;
+#endif
+
+ for (i = 0; i < parts; i++) {
+ /* partition starting lba */
+ start = partitions[i].start;
+ if (start && (start < offset)) {
+ printf("Partition overlap\n");
+ return -1;
+ }
+ if (start) {
+ gpt_e[i].starting_lba = cpu_to_le64(start);
+ offset = start + partitions[i].size;
+ } else {
+ gpt_e[i].starting_lba = cpu_to_le64(offset);
+ offset += partitions[i].size;
+ }
+ if (offset >= gpt_h->last_usable_lba) {
+ printf("Partitions layout exceds disk size\n");
+ return -1;
+ }
+ /* partition ending lba */
+ if ((i == parts - 1) && (partitions[i].size == 0))
+ /* extend the last partition to maximuim */
+ gpt_e[i].ending_lba = gpt_h->last_usable_lba;
+ else
+ gpt_e[i].ending_lba = cpu_to_le64(offset - 1);
+
+ /* partition type GUID */
+ memcpy(gpt_e[i].partition_type_guid.b,
+ &PARTITION_BASIC_DATA_GUID, 16);
+
+#ifdef CONFIG_PARTITION_UUIDS
+ str_uuid = partitions[i].uuid;
+ if (string_uuid(str_uuid, gpt_e[i].unique_partition_guid.b)) {
+ printf("Partition no. %d: invalid guid: %s\n",
+ i, str_uuid);
+ return -1;
+ }
+#endif
+
+ /* partition attributes */
+ memset(&gpt_e[i].attributes, 0,
+ sizeof(gpt_entry_attributes));
+
+ /* partition name */
+ efiname_len = sizeof(gpt_e[i].partition_name)
+ / sizeof(efi_char16_t);
+ dosname_len = sizeof(partitions[i].name);
+
+ memset(gpt_e[i].partition_name, 0,
+ sizeof(gpt_e[i].partition_name));
+
+ for (k = 0; k < min(dosname_len, efiname_len); k++)
+ gpt_e[i].partition_name[k] =
+ (efi_char16_t)(partitions[i].name[k]);
+
+ debug("%s: name: %s offset[%d]: 0x%x size[%d]: 0x" LBAF "\n",
+ __func__, partitions[i].name, i,
+ offset, i, partitions[i].size);
+ }
+
+ return 0;
+}
+
+int gpt_fill_header(block_dev_desc_t *dev_desc, gpt_header *gpt_h,
+ char *str_guid, int parts_count)
+{
+ gpt_h->signature = cpu_to_le64(GPT_HEADER_SIGNATURE);
+ gpt_h->revision = cpu_to_le32(GPT_HEADER_REVISION_V1);
+ gpt_h->header_size = cpu_to_le32(sizeof(gpt_header));
+ gpt_h->my_lba = cpu_to_le64(1);
+ gpt_h->alternate_lba = cpu_to_le64(dev_desc->lba - 1);
+ gpt_h->first_usable_lba = cpu_to_le64(34);
+ gpt_h->last_usable_lba = cpu_to_le64(dev_desc->lba - 34);
+ gpt_h->partition_entry_lba = cpu_to_le64(2);
+ gpt_h->num_partition_entries = cpu_to_le32(GPT_ENTRY_NUMBERS);
+ gpt_h->sizeof_partition_entry = cpu_to_le32(sizeof(gpt_entry));
+ gpt_h->header_crc32 = 0;
+ gpt_h->partition_entry_array_crc32 = 0;
+
+ if (string_uuid(str_guid, gpt_h->disk_guid.b))
+ return -1;
+
+ return 0;
+}
+
+int gpt_restore(block_dev_desc_t *dev_desc, char *str_disk_guid,
+ disk_partition_t *partitions, int parts_count)
+{
+ int ret;
+
+ gpt_header *gpt_h = calloc(1, PAD_TO_BLOCKSIZE(sizeof(gpt_header),
+ dev_desc));
+ gpt_entry *gpt_e;
+
+ if (gpt_h == NULL) {
+ printf("%s: calloc failed!\n", __func__);
+ return -1;
+ }
+
+ gpt_e = calloc(1, PAD_TO_BLOCKSIZE(GPT_ENTRY_NUMBERS
+ * sizeof(gpt_entry),
+ dev_desc));
+ if (gpt_e == NULL) {
+ printf("%s: calloc failed!\n", __func__);
+ free(gpt_h);
+ return -1;
+ }
+
+ /* Generate Primary GPT header (LBA1) */
+ ret = gpt_fill_header(dev_desc, gpt_h, str_disk_guid, parts_count);
+ if (ret)
+ goto err;
+
+ /* Generate partition entries */
+ ret = gpt_fill_pte(gpt_h, gpt_e, partitions, parts_count);
+ if (ret)
+ goto err;
+
+ /* Write GPT partition table */
+ ret = write_gpt_table(dev_desc, gpt_h, gpt_e);
+
+err:
+ free(gpt_e);
+ free(gpt_h);
+ return ret;
+}
+#endif
+
/*
* Private functions
*/
static int pmbr_part_valid(struct partition *part)
{
if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT &&
- le32_to_cpu(part->start_sect) == 1UL) {
+ get_unaligned_le32(&part->start_sect) == 1UL) {
return 1;
}
static gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * dev_desc,
gpt_header * pgpt_head)
{
- size_t count = 0;
+ size_t count = 0, blk_cnt;
gpt_entry *pte = NULL;
if (!dev_desc || !pgpt_head) {
/* Allocate memory for PTE, remember to FREE */
if (count != 0) {
- pte = memalign(ARCH_DMA_MINALIGN, count);
+ pte = memalign(ARCH_DMA_MINALIGN,
+ PAD_TO_BLOCKSIZE(count, dev_desc));
}
if (count == 0 || pte == NULL) {
}
/* Read GPT Entries from device */
+ blk_cnt = BLOCK_CNT(count, dev_desc);
if (dev_desc->block_read (dev_desc->dev,
le64_to_cpu(pgpt_head->partition_entry_lba),
- (lbaint_t) (count / GPT_BLOCK_SIZE), pte)
- != (count / GPT_BLOCK_SIZE)) {
+ (lbaint_t) (blk_cnt), pte)
+ != blk_cnt) {
printf("*** ERROR: Can't read GPT Entries ***\n");
free(pte);
projects / platform / kernel / u-boot.git / blobdiff