upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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444 lines
12 KiB
444 lines
12 KiB
/*
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* Copyright (C) 2008 RuggedCom, Inc.
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* Richard Retanubun <RichardRetanubun@RuggedCom.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* Problems with CONFIG_SYS_64BIT_LBA:
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*
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* struct disk_partition.start in include/part.h is sized as ulong.
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* When CONFIG_SYS_64BIT_LBA is activated, lbaint_t changes from ulong to uint64_t.
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* For now, it is cast back to ulong at assignment.
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*
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* This limits the maximum size of addressable storage to < 2 Terra Bytes
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*/
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#include <common.h>
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#include <command.h>
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#include <ide.h>
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#include <malloc.h>
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#include "part_efi.h"
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#include <linux/ctype.h>
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#if defined(CONFIG_CMD_IDE) || \
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defined(CONFIG_CMD_MG_DISK) || \
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defined(CONFIG_CMD_SATA) || \
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defined(CONFIG_CMD_SCSI) || \
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defined(CONFIG_CMD_USB) || \
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defined(CONFIG_MMC) || \
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defined(CONFIG_SYSTEMACE)
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/* Convert char[2] in little endian format to the host format integer
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*/
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static inline unsigned short le16_to_int(unsigned char *le16)
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{
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return ((le16[1] << 8) + le16[0]);
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}
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/* Convert char[4] in little endian format to the host format integer
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*/
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static inline unsigned long le32_to_int(unsigned char *le32)
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{
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return ((le32[3] << 24) + (le32[2] << 16) + (le32[1] << 8) + le32[0]);
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}
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/* Convert char[8] in little endian format to the host format integer
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*/
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static inline unsigned long long le64_to_int(unsigned char *le64)
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{
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return (((unsigned long long)le64[7] << 56) +
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((unsigned long long)le64[6] << 48) +
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((unsigned long long)le64[5] << 40) +
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((unsigned long long)le64[4] << 32) +
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((unsigned long long)le64[3] << 24) +
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((unsigned long long)le64[2] << 16) +
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((unsigned long long)le64[1] << 8) +
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(unsigned long long)le64[0]);
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}
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/**
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* efi_crc32() - EFI version of crc32 function
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* @buf: buffer to calculate crc32 of
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* @len - length of buf
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*
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* Description: Returns EFI-style CRC32 value for @buf
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*/
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static inline unsigned long efi_crc32(const void *buf, unsigned long len)
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{
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return crc32(0, buf, len);
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}
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/*
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* Private function prototypes
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*/
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static int pmbr_part_valid(struct partition *part);
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static int is_pmbr_valid(legacy_mbr * mbr);
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static int is_gpt_valid(block_dev_desc_t * dev_desc, unsigned long long lba,
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gpt_header * pgpt_head, gpt_entry ** pgpt_pte);
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static gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * dev_desc,
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gpt_header * pgpt_head);
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static int is_pte_valid(gpt_entry * pte);
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static char *print_efiname(gpt_entry *pte)
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{
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static char name[PARTNAME_SZ + 1];
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int i;
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for (i = 0; i < PARTNAME_SZ; i++) {
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u8 c;
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c = pte->partition_name[i] & 0xff;
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c = (c && !isprint(c)) ? '.' : c;
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name[i] = c;
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}
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name[PARTNAME_SZ] = 0;
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return name;
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}
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/*
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* Public Functions (include/part.h)
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*/
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void print_part_efi(block_dev_desc_t * dev_desc)
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{
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ALLOC_CACHE_ALIGN_BUFFER(gpt_header, gpt_head, 1);
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gpt_entry **pgpt_pte = NULL;
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int i = 0;
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if (!dev_desc) {
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printf("%s: Invalid Argument(s)\n", __FUNCTION__);
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return;
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}
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/* This function validates AND fills in the GPT header and PTE */
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if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA,
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gpt_head, pgpt_pte) != 1) {
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printf("%s: *** ERROR: Invalid GPT ***\n", __FUNCTION__);
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return;
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}
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debug("%s: gpt-entry at 0x%08X\n", __FUNCTION__, (unsigned int)*pgpt_pte);
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printf("Part\tName\t\t\tStart LBA\tEnd LBA\n");
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for (i = 0; i < le32_to_int(gpt_head->num_partition_entries); i++) {
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if (is_pte_valid(&(*pgpt_pte)[i])) {
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printf("%3d\t%-18s\t0x%08llX\t0x%08llX\n", (i + 1),
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print_efiname(&(*pgpt_pte)[i]),
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le64_to_int((*pgpt_pte)[i].starting_lba),
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le64_to_int((*pgpt_pte)[i].ending_lba));
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} else {
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break; /* Stop at the first non valid PTE */
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}
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}
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/* Remember to free pte */
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if (*pgpt_pte != NULL) {
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debug("%s: Freeing pgpt_pte\n", __FUNCTION__);
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free(*pgpt_pte);
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}
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return;
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}
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int get_partition_info_efi(block_dev_desc_t * dev_desc, int part,
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disk_partition_t * info)
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{
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ALLOC_CACHE_ALIGN_BUFFER(gpt_header, gpt_head, 1);
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gpt_entry **pgpt_pte = NULL;
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/* "part" argument must be at least 1 */
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if (!dev_desc || !info || part < 1) {
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printf("%s: Invalid Argument(s)\n", __FUNCTION__);
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return -1;
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}
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/* This function validates AND fills in the GPT header and PTE */
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if (is_gpt_valid(dev_desc, GPT_PRIMARY_PARTITION_TABLE_LBA,
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gpt_head, pgpt_pte) != 1) {
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printf("%s: *** ERROR: Invalid GPT ***\n", __FUNCTION__);
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return -1;
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}
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/* The ulong casting limits the maximum disk size to 2 TB */
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info->start = (ulong) le64_to_int((*pgpt_pte)[part - 1].starting_lba);
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/* The ending LBA is inclusive, to calculate size, add 1 to it */
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info->size = ((ulong)le64_to_int((*pgpt_pte)[part - 1].ending_lba) + 1)
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- info->start;
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info->blksz = GPT_BLOCK_SIZE;
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sprintf((char *)info->name, "%s",
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print_efiname(&(*pgpt_pte)[part - 1]));
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sprintf((char *)info->type, "U-Boot");
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debug("%s: start 0x%lX, size 0x%lX, name %s", __FUNCTION__,
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info->start, info->size, info->name);
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/* Remember to free pte */
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if (*pgpt_pte != NULL) {
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debug("%s: Freeing pgpt_pte\n", __FUNCTION__);
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free(*pgpt_pte);
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}
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return 0;
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}
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int test_part_efi(block_dev_desc_t * dev_desc)
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{
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ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, legacymbr, 1);
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/* Read legacy MBR from block 0 and validate it */
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if ((dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)legacymbr) != 1)
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|| (is_pmbr_valid(legacymbr) != 1)) {
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return -1;
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}
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return 0;
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}
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/*
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* Private functions
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*/
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/*
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* pmbr_part_valid(): Check for EFI partition signature
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*
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* Returns: 1 if EFI GPT partition type is found.
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*/
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static int pmbr_part_valid(struct partition *part)
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{
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if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT &&
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le32_to_int(part->start_sect) == 1UL) {
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return 1;
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}
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return 0;
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}
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/*
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* is_pmbr_valid(): test Protective MBR for validity
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*
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* Returns: 1 if PMBR is valid, 0 otherwise.
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* Validity depends on two things:
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* 1) MSDOS signature is in the last two bytes of the MBR
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* 2) One partition of type 0xEE is found, checked by pmbr_part_valid()
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*/
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static int is_pmbr_valid(legacy_mbr * mbr)
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{
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int i = 0;
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if (!mbr || le16_to_int(mbr->signature) != MSDOS_MBR_SIGNATURE) {
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return 0;
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}
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for (i = 0; i < 4; i++) {
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if (pmbr_part_valid(&mbr->partition_record[i])) {
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return 1;
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}
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}
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return 0;
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}
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/**
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* is_gpt_valid() - tests one GPT header and PTEs for validity
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*
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* lba is the logical block address of the GPT header to test
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* gpt is a GPT header ptr, filled on return.
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* ptes is a PTEs ptr, filled on return.
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*
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* Description: returns 1 if valid, 0 on error.
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* If valid, returns pointers to PTEs.
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*/
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static int is_gpt_valid(block_dev_desc_t * dev_desc, unsigned long long lba,
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gpt_header * pgpt_head, gpt_entry ** pgpt_pte)
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{
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unsigned char crc32_backup[4] = { 0 };
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unsigned long calc_crc32;
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unsigned long long lastlba;
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if (!dev_desc || !pgpt_head) {
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printf("%s: Invalid Argument(s)\n", __FUNCTION__);
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return 0;
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}
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/* Read GPT Header from device */
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if (dev_desc->block_read(dev_desc->dev, lba, 1, pgpt_head) != 1) {
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printf("*** ERROR: Can't read GPT header ***\n");
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return 0;
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}
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/* Check the GPT header signature */
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if (le64_to_int(pgpt_head->signature) != GPT_HEADER_SIGNATURE) {
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printf("GUID Partition Table Header signature is wrong:"
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"0x%llX != 0x%llX\n",
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(unsigned long long)le64_to_int(pgpt_head->signature),
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(unsigned long long)GPT_HEADER_SIGNATURE);
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return 0;
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}
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/* Check the GUID Partition Table CRC */
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memcpy(crc32_backup, pgpt_head->header_crc32, sizeof(crc32_backup));
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memset(pgpt_head->header_crc32, 0, sizeof(pgpt_head->header_crc32));
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calc_crc32 = efi_crc32((const unsigned char *)pgpt_head,
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le32_to_int(pgpt_head->header_size));
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memcpy(pgpt_head->header_crc32, crc32_backup, sizeof(crc32_backup));
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if (calc_crc32 != le32_to_int(crc32_backup)) {
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printf("GUID Partition Table Header CRC is wrong:"
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"0x%08lX != 0x%08lX\n",
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le32_to_int(crc32_backup), calc_crc32);
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return 0;
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}
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/* Check that the my_lba entry points to the LBA that contains the GPT */
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if (le64_to_int(pgpt_head->my_lba) != lba) {
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printf("GPT: my_lba incorrect: %llX != %llX\n",
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(unsigned long long)le64_to_int(pgpt_head->my_lba),
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(unsigned long long)lba);
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return 0;
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}
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/* Check the first_usable_lba and last_usable_lba are within the disk. */
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lastlba = (unsigned long long)dev_desc->lba;
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if (le64_to_int(pgpt_head->first_usable_lba) > lastlba) {
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printf("GPT: first_usable_lba incorrect: %llX > %llX\n",
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le64_to_int(pgpt_head->first_usable_lba), lastlba);
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return 0;
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}
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if (le64_to_int(pgpt_head->last_usable_lba) > lastlba) {
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printf("GPT: last_usable_lba incorrect: %llX > %llX\n",
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le64_to_int(pgpt_head->last_usable_lba), lastlba);
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return 0;
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}
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debug("GPT: first_usable_lba: %llX last_usable_lba %llX last lba %llX\n",
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le64_to_int(pgpt_head->first_usable_lba),
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le64_to_int(pgpt_head->last_usable_lba), lastlba);
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/* Read and allocate Partition Table Entries */
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*pgpt_pte = alloc_read_gpt_entries(dev_desc, pgpt_head);
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if (*pgpt_pte == NULL) {
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printf("GPT: Failed to allocate memory for PTE\n");
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return 0;
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}
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/* Check the GUID Partition Table Entry Array CRC */
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calc_crc32 = efi_crc32((const unsigned char *)*pgpt_pte,
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le32_to_int(pgpt_head->num_partition_entries) *
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le32_to_int(pgpt_head->sizeof_partition_entry));
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if (calc_crc32 != le32_to_int(pgpt_head->partition_entry_array_crc32)) {
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printf("GUID Partition Table Entry Array CRC is wrong:"
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"0x%08lX != 0x%08lX\n",
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le32_to_int(pgpt_head->partition_entry_array_crc32),
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calc_crc32);
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if (*pgpt_pte != NULL) {
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free(*pgpt_pte);
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}
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return 0;
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}
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/* We're done, all's well */
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return 1;
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}
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/**
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* alloc_read_gpt_entries(): reads partition entries from disk
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* @dev_desc
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* @gpt - GPT header
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*
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* Description: Returns ptes on success, NULL on error.
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* Allocates space for PTEs based on information found in @gpt.
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* Notes: remember to free pte when you're done!
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*/
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static gpt_entry *alloc_read_gpt_entries(block_dev_desc_t * dev_desc,
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gpt_header * pgpt_head)
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{
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size_t count = 0;
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gpt_entry *pte = NULL;
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if (!dev_desc || !pgpt_head) {
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printf("%s: Invalid Argument(s)\n", __FUNCTION__);
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return NULL;
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}
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count = le32_to_int(pgpt_head->num_partition_entries) *
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le32_to_int(pgpt_head->sizeof_partition_entry);
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debug("%s: count = %lu * %lu = %u\n", __FUNCTION__,
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le32_to_int(pgpt_head->num_partition_entries),
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le32_to_int(pgpt_head->sizeof_partition_entry), count);
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/* Allocate memory for PTE, remember to FREE */
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if (count != 0) {
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pte = memalign(CONFIG_SYS_CACHELINE_SIZE, count);
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}
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if (count == 0 || pte == NULL) {
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printf("%s: ERROR: Can't allocate 0x%X bytes for GPT Entries\n",
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__FUNCTION__, count);
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return NULL;
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}
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/* Read GPT Entries from device */
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if (dev_desc->block_read (dev_desc->dev,
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(unsigned long)le64_to_int(pgpt_head->partition_entry_lba),
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(lbaint_t) (count / GPT_BLOCK_SIZE), pte)
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!= (count / GPT_BLOCK_SIZE)) {
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printf("*** ERROR: Can't read GPT Entries ***\n");
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free(pte);
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return NULL;
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}
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return pte;
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}
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/**
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* is_pte_valid(): validates a single Partition Table Entry
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* @gpt_entry - Pointer to a single Partition Table Entry
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*
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* Description: returns 1 if valid, 0 on error.
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*/
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static int is_pte_valid(gpt_entry * pte)
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{
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efi_guid_t unused_guid;
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if (!pte) {
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printf("%s: Invalid Argument(s)\n", __FUNCTION__);
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return 0;
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}
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/* Only one validation for now:
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* The GUID Partition Type != Unused Entry (ALL-ZERO)
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*/
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memset(unused_guid.b, 0, sizeof(unused_guid.b));
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if (memcmp(pte->partition_type_guid.b, unused_guid.b,
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sizeof(unused_guid.b)) == 0) {
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debug("%s: Found an unused PTE GUID at 0x%08X\n", __FUNCTION__,
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(unsigned int)pte);
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return 0;
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} else {
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return 1;
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}
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}
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#endif
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