2018-05-06 21:58:06 +00:00
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// SPDX-License-Identifier: GPL-2.0+
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2002-11-03 00:38:21 +00:00
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/*
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* (C) Copyright 2001
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* Raymond Lo, lo@routefree.com
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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/*
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* Support for harddisk partitions.
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*
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* To be compatible with LinuxPPC and Apple we use the standard Apple
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* SCSI disk partitioning scheme. For more information see:
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* http://developer.apple.com/techpubs/mac/Devices/Devices-126.html#MARKER-14-92
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*/
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#include <common.h>
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2020-05-10 17:39:58 +00:00
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#include <blk.h>
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2002-11-03 00:38:21 +00:00
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#include <command.h>
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#include <ide.h>
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2015-09-02 23:24:58 +00:00
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#include <memalign.h>
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2020-12-23 12:55:12 +00:00
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#include <asm/unaligned.h>
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2020-12-23 12:55:13 +00:00
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#include <linux/compiler.h>
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2002-11-03 00:38:21 +00:00
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#include "part_dos.h"
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2020-05-10 17:39:58 +00:00
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#include <part.h>
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2002-11-03 00:38:21 +00:00
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2014-06-06 03:48:26 +00:00
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#define DOS_PART_DEFAULT_SECTOR 512
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2019-07-08 23:37:03 +00:00
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/* should this be configurable? It looks like it's not very common at all
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* to use large numbers of partitions */
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#define MAX_EXT_PARTS 256
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2002-11-03 00:38:21 +00:00
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static inline int is_extended(int part_type)
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{
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2020-12-23 12:55:11 +00:00
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return (part_type == DOS_PART_TYPE_EXTENDED ||
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part_type == DOS_PART_TYPE_EXTENDED_LBA ||
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part_type == DOS_PART_TYPE_EXTENDED_LINUX);
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2002-11-03 00:38:21 +00:00
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}
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2020-03-19 12:49:34 +00:00
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static int get_bootable(dos_partition_t *p)
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2012-08-23 11:31:43 +00:00
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{
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2020-03-19 12:49:34 +00:00
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int ret = 0;
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if (p->sys_ind == 0xef)
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ret |= PART_EFI_SYSTEM_PARTITION;
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if (p->boot_ind == 0x80)
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ret |= PART_BOOTABLE;
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return ret;
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2012-08-23 11:31:43 +00:00
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}
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2015-08-25 19:24:13 +00:00
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static void print_one_part(dos_partition_t *p, lbaint_t ext_part_sector,
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2012-10-08 08:14:40 +00:00
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int part_num, unsigned int disksig)
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2002-11-03 00:38:21 +00:00
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{
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2020-12-23 12:55:12 +00:00
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lbaint_t lba_start = ext_part_sector + get_unaligned_le32(p->start4);
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lbaint_t lba_size = get_unaligned_le32(p->size4);
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2002-11-03 00:38:21 +00:00
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2015-08-25 19:24:13 +00:00
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printf("%3d\t%-10" LBAFlength "u\t%-10" LBAFlength
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"u\t%08x-%02x\t%02x%s%s\n",
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2012-10-08 08:14:40 +00:00
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part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
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2012-08-23 11:31:43 +00:00
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(is_extended(p->sys_ind) ? " Extd" : ""),
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2020-03-19 12:49:34 +00:00
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(get_bootable(p) ? " Boot" : ""));
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2002-11-03 00:38:21 +00:00
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}
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2003-09-10 22:30:53 +00:00
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static int test_block_type(unsigned char *buffer)
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{
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2013-04-09 05:46:14 +00:00
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int slot;
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struct dos_partition *p;
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2019-10-15 18:43:42 +00:00
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int part_count = 0;
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2013-04-09 05:46:14 +00:00
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2003-09-10 22:30:53 +00:00
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if((buffer[DOS_PART_MAGIC_OFFSET + 0] != 0x55) ||
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(buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) ) {
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return (-1);
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} /* no DOS Signature at all */
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2013-04-09 05:46:14 +00:00
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p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
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2019-10-15 18:43:42 +00:00
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/* Check that the boot indicators are valid and count the partitions. */
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for (slot = 0; slot < 4; ++slot, ++p) {
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if (p->boot_ind != 0 && p->boot_ind != 0x80)
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break;
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if (p->sys_ind)
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++part_count;
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2010-07-19 09:36:57 +00:00
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}
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2003-09-10 22:30:53 +00:00
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2019-10-15 18:43:42 +00:00
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/*
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* If the partition table is invalid or empty,
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* check if this is a DOS PBR
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*/
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if (slot != 4 || !part_count) {
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if (!strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
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"FAT", 3) ||
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!strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
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"FAT32", 5))
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return DOS_PBR; /* This is a DOS PBR and not an MBR */
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}
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if (slot == 4)
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return DOS_MBR; /* This is an DOS MBR */
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/* This is neither a DOS MBR nor a DOS PBR */
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return -1;
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}
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2002-11-03 00:38:21 +00:00
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2023-08-24 19:55:26 +00:00
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static int part_test_dos(struct blk_desc *desc)
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2002-11-03 00:38:21 +00:00
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{
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2017-10-04 16:29:57 +00:00
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#ifndef CONFIG_SPL_BUILD
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2019-09-04 14:40:12 +00:00
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ALLOC_CACHE_ALIGN_BUFFER(legacy_mbr, mbr,
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2023-08-24 19:55:26 +00:00
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DIV_ROUND_UP(desc->blksz, sizeof(legacy_mbr)));
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2002-11-03 00:38:21 +00:00
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2023-08-24 19:55:26 +00:00
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if (blk_dread(desc, 0, 1, (ulong *)mbr) != 1)
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disk: part_dos: don't claim whole-disk FAT filesystems
Logically, a disk that contains a raw FAT filesystem does not in fact
have a partition table. However, test_part_dos() was claiming that such
disks did in fact have a DOS-style partition table. This caused
get_device_and_partition() not to return a whole-disk disk_partition_t,
since part_type != PART_TYPE_UNKNOWN.
part_dos.c's print_partition_extended() detected the raw FAT filesystem
condition and printed a fake partition table that encompassed the whole
disk.
However, part_dos.c's get_partition_info_extended() did not return any
valid partitions in this case. This combination caused
get_device_and_partition() not to find any valid partitions, and hence
to return an error.
Fix test_part_dos() not to claim that raw FAT filesystems are DOS
partition tables. In turn, this causes get_device_and_partition() to
return a whole-disk disk_partition_t, and hence the following commands
work:
fatls mmc 0 /
fatls mmc 0:auto /
An alternative would be to modify print_partition_extended() to detect
raw FAT filesystems, just like print_partition_extended() does, and to
return a fake partition in this case. However, this seems logically
incorrect, and also duplicates code, since get_device_and_partition()
falls back to returning a whole-disk partition when there is no partition
table on the device.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-10-05 13:17:40 +00:00
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return -1;
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2017-09-13 22:05:25 +00:00
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if (test_block_type((unsigned char *)mbr) != DOS_MBR)
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disk: part_dos: don't claim whole-disk FAT filesystems
Logically, a disk that contains a raw FAT filesystem does not in fact
have a partition table. However, test_part_dos() was claiming that such
disks did in fact have a DOS-style partition table. This caused
get_device_and_partition() not to return a whole-disk disk_partition_t,
since part_type != PART_TYPE_UNKNOWN.
part_dos.c's print_partition_extended() detected the raw FAT filesystem
condition and printed a fake partition table that encompassed the whole
disk.
However, part_dos.c's get_partition_info_extended() did not return any
valid partitions in this case. This combination caused
get_device_and_partition() not to find any valid partitions, and hence
to return an error.
Fix test_part_dos() not to claim that raw FAT filesystems are DOS
partition tables. In turn, this causes get_device_and_partition() to
return a whole-disk disk_partition_t, and hence the following commands
work:
fatls mmc 0 /
fatls mmc 0:auto /
An alternative would be to modify print_partition_extended() to detect
raw FAT filesystems, just like print_partition_extended() does, and to
return a fake partition in this case. However, this seems logically
incorrect, and also duplicates code, since get_device_and_partition()
falls back to returning a whole-disk partition when there is no partition
table on the device.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-10-05 13:17:40 +00:00
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return -1;
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2023-08-24 19:55:26 +00:00
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if (desc->sig_type == SIG_TYPE_NONE && mbr->unique_mbr_signature) {
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desc->sig_type = SIG_TYPE_MBR;
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desc->mbr_sig = mbr->unique_mbr_signature;
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2017-09-13 22:05:25 +00:00
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}
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2017-10-04 16:29:57 +00:00
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#else
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2023-08-24 19:55:26 +00:00
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, desc->blksz);
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2017-10-04 16:29:57 +00:00
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2023-08-24 19:55:26 +00:00
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if (blk_dread(desc, 0, 1, (ulong *)buffer) != 1)
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2017-10-04 16:29:57 +00:00
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return -1;
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if (test_block_type(buffer) != DOS_MBR)
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return -1;
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#endif
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2017-09-13 22:05:25 +00:00
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disk: part_dos: don't claim whole-disk FAT filesystems
Logically, a disk that contains a raw FAT filesystem does not in fact
have a partition table. However, test_part_dos() was claiming that such
disks did in fact have a DOS-style partition table. This caused
get_device_and_partition() not to return a whole-disk disk_partition_t,
since part_type != PART_TYPE_UNKNOWN.
part_dos.c's print_partition_extended() detected the raw FAT filesystem
condition and printed a fake partition table that encompassed the whole
disk.
However, part_dos.c's get_partition_info_extended() did not return any
valid partitions in this case. This combination caused
get_device_and_partition() not to find any valid partitions, and hence
to return an error.
Fix test_part_dos() not to claim that raw FAT filesystems are DOS
partition tables. In turn, this causes get_device_and_partition() to
return a whole-disk disk_partition_t, and hence the following commands
work:
fatls mmc 0 /
fatls mmc 0:auto /
An alternative would be to modify print_partition_extended() to detect
raw FAT filesystems, just like print_partition_extended() does, and to
return a fake partition in this case. However, this seems logically
incorrect, and also duplicates code, since get_device_and_partition()
falls back to returning a whole-disk partition when there is no partition
table on the device.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-10-05 13:17:40 +00:00
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return 0;
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2002-11-03 00:38:21 +00:00
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}
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/* Print a partition that is relative to its Extended partition table
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*/
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2023-08-24 19:55:26 +00:00
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static void print_partition_extended(struct blk_desc *desc,
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2015-08-25 19:24:13 +00:00
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lbaint_t ext_part_sector,
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lbaint_t relative,
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2012-10-08 08:14:40 +00:00
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int part_num, unsigned int disksig)
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2002-11-03 00:38:21 +00:00
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{
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2023-08-24 19:55:26 +00:00
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, desc->blksz);
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2002-11-03 00:38:21 +00:00
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dos_partition_t *pt;
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int i;
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2019-07-08 23:37:03 +00:00
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/* set a maximum recursion level */
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if (part_num > MAX_EXT_PARTS)
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{
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printf("** Nested DOS partitions detected, stopping **\n");
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return;
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}
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2023-08-24 19:55:26 +00:00
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if (blk_dread(desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
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2015-08-25 19:24:13 +00:00
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printf ("** Can't read partition table on %d:" LBAFU " **\n",
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2023-08-24 19:55:26 +00:00
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desc->devnum, ext_part_sector);
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2002-11-03 00:38:21 +00:00
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return;
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}
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2003-09-10 22:30:53 +00:00
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i=test_block_type(buffer);
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disk: part_dos: don't claim whole-disk FAT filesystems
Logically, a disk that contains a raw FAT filesystem does not in fact
have a partition table. However, test_part_dos() was claiming that such
disks did in fact have a DOS-style partition table. This caused
get_device_and_partition() not to return a whole-disk disk_partition_t,
since part_type != PART_TYPE_UNKNOWN.
part_dos.c's print_partition_extended() detected the raw FAT filesystem
condition and printed a fake partition table that encompassed the whole
disk.
However, part_dos.c's get_partition_info_extended() did not return any
valid partitions in this case. This combination caused
get_device_and_partition() not to find any valid partitions, and hence
to return an error.
Fix test_part_dos() not to claim that raw FAT filesystems are DOS
partition tables. In turn, this causes get_device_and_partition() to
return a whole-disk disk_partition_t, and hence the following commands
work:
fatls mmc 0 /
fatls mmc 0:auto /
An alternative would be to modify print_partition_extended() to detect
raw FAT filesystems, just like print_partition_extended() does, and to
return a fake partition in this case. However, this seems logically
incorrect, and also duplicates code, since get_device_and_partition()
falls back to returning a whole-disk partition when there is no partition
table on the device.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-10-05 13:17:40 +00:00
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if (i != DOS_MBR) {
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2002-11-03 00:38:21 +00:00
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printf ("bad MBR sector signature 0x%02x%02x\n",
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buffer[DOS_PART_MAGIC_OFFSET],
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buffer[DOS_PART_MAGIC_OFFSET + 1]);
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return;
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}
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disk: part_dos: don't claim whole-disk FAT filesystems
Logically, a disk that contains a raw FAT filesystem does not in fact
have a partition table. However, test_part_dos() was claiming that such
disks did in fact have a DOS-style partition table. This caused
get_device_and_partition() not to return a whole-disk disk_partition_t,
since part_type != PART_TYPE_UNKNOWN.
part_dos.c's print_partition_extended() detected the raw FAT filesystem
condition and printed a fake partition table that encompassed the whole
disk.
However, part_dos.c's get_partition_info_extended() did not return any
valid partitions in this case. This combination caused
get_device_and_partition() not to find any valid partitions, and hence
to return an error.
Fix test_part_dos() not to claim that raw FAT filesystems are DOS
partition tables. In turn, this causes get_device_and_partition() to
return a whole-disk disk_partition_t, and hence the following commands
work:
fatls mmc 0 /
fatls mmc 0:auto /
An alternative would be to modify print_partition_extended() to detect
raw FAT filesystems, just like print_partition_extended() does, and to
return a fake partition in this case. However, this seems logically
incorrect, and also duplicates code, since get_device_and_partition()
falls back to returning a whole-disk partition when there is no partition
table on the device.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
2012-10-05 13:17:40 +00:00
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2012-10-08 08:14:40 +00:00
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if (!ext_part_sector)
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2020-12-23 12:55:12 +00:00
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disksig = get_unaligned_le32(&buffer[DOS_PART_DISKSIG_OFFSET]);
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2012-10-08 08:14:40 +00:00
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2002-11-03 00:38:21 +00:00
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/* Print all primary/logical partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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/*
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2003-06-27 21:31:46 +00:00
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* fdisk does not show the extended partitions that
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2002-11-03 00:38:21 +00:00
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* are not in the MBR
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*/
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if ((pt->sys_ind != 0) &&
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(ext_part_sector == 0 || !is_extended (pt->sys_ind)) ) {
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2012-10-08 08:14:40 +00:00
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print_one_part(pt, ext_part_sector, part_num, disksig);
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2002-11-03 00:38:21 +00:00
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}
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/* Reverse engr the fdisk part# assignment rule! */
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if ((ext_part_sector == 0) ||
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(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
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part_num++;
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}
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}
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/* Follows the extended partitions */
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pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
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for (i = 0; i < 4; i++, pt++) {
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if (is_extended (pt->sys_ind)) {
|
2015-08-25 19:24:13 +00:00
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lbaint_t lba_start
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2020-12-23 12:55:12 +00:00
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= get_unaligned_le32 (pt->start4) + relative;
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2002-11-03 00:38:21 +00:00
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2023-08-24 19:55:26 +00:00
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print_partition_extended(desc, lba_start,
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!ext_part_sector ? lba_start :
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relative, part_num, disksig);
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2002-11-03 00:38:21 +00:00
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}
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}
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return;
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}
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/* Print a partition that is relative to its Extended partition table
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*/
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2023-08-24 19:55:26 +00:00
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static int part_get_info_extended(struct blk_desc *desc,
|
2016-02-29 22:25:48 +00:00
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lbaint_t ext_part_sector, lbaint_t relative,
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int part_num, int which_part,
|
2020-05-10 17:39:57 +00:00
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struct disk_partition *info, uint disksig)
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2002-11-03 00:38:21 +00:00
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{
|
2023-08-24 19:55:26 +00:00
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, desc->blksz);
|
2023-08-13 23:48:45 +00:00
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struct disk_partition wdinfo = { 0 };
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2002-11-03 00:38:21 +00:00
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|
|
dos_partition_t *pt;
|
2023-08-13 23:48:45 +00:00
|
|
|
int i, ret;
|
2014-06-06 03:48:26 +00:00
|
|
|
int dos_type;
|
2002-11-03 00:38:21 +00:00
|
|
|
|
2019-07-08 23:37:03 +00:00
|
|
|
/* set a maximum recursion level */
|
|
|
|
if (part_num > MAX_EXT_PARTS)
|
|
|
|
{
|
|
|
|
printf("** Nested DOS partitions detected, stopping **\n");
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2023-08-24 19:55:26 +00:00
|
|
|
if (blk_dread(desc, ext_part_sector, 1, (ulong *)buffer) != 1) {
|
2015-08-25 19:24:13 +00:00
|
|
|
printf ("** Can't read partition table on %d:" LBAFU " **\n",
|
2023-08-24 19:55:26 +00:00
|
|
|
desc->devnum, ext_part_sector);
|
2002-11-03 00:38:21 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
|
|
|
|
buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
|
|
|
|
printf ("bad MBR sector signature 0x%02x%02x\n",
|
|
|
|
buffer[DOS_PART_MAGIC_OFFSET],
|
|
|
|
buffer[DOS_PART_MAGIC_OFFSET + 1]);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2023-08-24 19:55:31 +00:00
|
|
|
if (CONFIG_IS_ENABLED(PARTITION_UUIDS) && !ext_part_sector)
|
2020-12-23 12:55:12 +00:00
|
|
|
disksig = get_unaligned_le32(&buffer[DOS_PART_DISKSIG_OFFSET]);
|
2012-09-21 09:51:00 +00:00
|
|
|
|
2023-08-24 19:55:26 +00:00
|
|
|
ret = part_get_info_whole_disk(desc, &wdinfo);
|
2023-08-13 23:48:45 +00:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
|
|
|
|
2002-11-03 00:38:21 +00:00
|
|
|
/* Print all primary/logical partitions */
|
|
|
|
pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
|
|
|
|
for (i = 0; i < 4; i++, pt++) {
|
|
|
|
/*
|
2003-06-27 21:31:46 +00:00
|
|
|
* fdisk does not show the extended partitions that
|
|
|
|
* are not in the MBR
|
2002-11-03 00:38:21 +00:00
|
|
|
*/
|
2009-09-28 09:40:38 +00:00
|
|
|
if (((pt->boot_ind & ~0x80) == 0) &&
|
|
|
|
(pt->sys_ind != 0) &&
|
2003-05-20 14:25:27 +00:00
|
|
|
(part_num == which_part) &&
|
2017-11-02 08:46:34 +00:00
|
|
|
(ext_part_sector == 0 || is_extended(pt->sys_ind) == 0)) {
|
2023-08-13 23:48:45 +00:00
|
|
|
if (wdinfo.blksz > DOS_PART_DEFAULT_SECTOR)
|
|
|
|
info->blksz = wdinfo.blksz;
|
|
|
|
else
|
|
|
|
info->blksz = DOS_PART_DEFAULT_SECTOR;
|
2014-05-26 18:52:23 +00:00
|
|
|
info->start = (lbaint_t)(ext_part_sector +
|
2020-12-23 12:55:12 +00:00
|
|
|
get_unaligned_le32(pt->start4));
|
|
|
|
info->size = (lbaint_t)get_unaligned_le32(pt->size4);
|
2023-08-24 19:55:26 +00:00
|
|
|
part_set_generic_name(desc, part_num,
|
2016-09-09 08:27:17 +00:00
|
|
|
(char *)info->name);
|
2002-11-03 00:38:21 +00:00
|
|
|
/* sprintf(info->type, "%d, pt->sys_ind); */
|
2015-12-30 13:05:58 +00:00
|
|
|
strcpy((char *)info->type, "U-Boot");
|
2020-03-19 12:49:34 +00:00
|
|
|
info->bootable = get_bootable(pt);
|
2023-08-24 19:55:31 +00:00
|
|
|
if (CONFIG_IS_ENABLED(PARTITION_UUIDS)) {
|
|
|
|
char str[12];
|
|
|
|
|
|
|
|
sprintf(str, "%08x-%02x", disksig, part_num);
|
|
|
|
disk_partition_set_uuid(info, str);
|
|
|
|
}
|
2017-02-11 01:15:34 +00:00
|
|
|
info->sys_ind = pt->sys_ind;
|
2002-11-03 00:38:21 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Reverse engr the fdisk part# assignment rule! */
|
|
|
|
if ((ext_part_sector == 0) ||
|
|
|
|
(pt->sys_ind != 0 && !is_extended (pt->sys_ind)) ) {
|
|
|
|
part_num++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Follows the extended partitions */
|
|
|
|
pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
|
|
|
|
for (i = 0; i < 4; i++, pt++) {
|
|
|
|
if (is_extended (pt->sys_ind)) {
|
2015-08-25 19:24:13 +00:00
|
|
|
lbaint_t lba_start
|
2020-12-23 12:55:12 +00:00
|
|
|
= get_unaligned_le32 (pt->start4) + relative;
|
2002-11-03 00:38:21 +00:00
|
|
|
|
2023-08-24 19:55:26 +00:00
|
|
|
return part_get_info_extended(desc, lba_start,
|
2002-11-03 00:38:21 +00:00
|
|
|
ext_part_sector == 0 ? lba_start : relative,
|
2012-09-21 09:51:00 +00:00
|
|
|
part_num, which_part, info, disksig);
|
2002-11-03 00:38:21 +00:00
|
|
|
}
|
|
|
|
}
|
2014-06-06 03:48:26 +00:00
|
|
|
|
|
|
|
/* Check for DOS PBR if no partition is found */
|
|
|
|
dos_type = test_block_type(buffer);
|
|
|
|
|
|
|
|
if (dos_type == DOS_PBR) {
|
|
|
|
info->start = 0;
|
2023-08-24 19:55:26 +00:00
|
|
|
info->size = desc->lba;
|
2023-08-13 23:48:45 +00:00
|
|
|
if (wdinfo.blksz > DOS_PART_DEFAULT_SECTOR)
|
|
|
|
info->blksz = wdinfo.blksz;
|
|
|
|
else
|
|
|
|
info->blksz = DOS_PART_DEFAULT_SECTOR;
|
2014-06-06 03:48:26 +00:00
|
|
|
info->bootable = 0;
|
2015-12-30 13:05:58 +00:00
|
|
|
strcpy((char *)info->type, "U-Boot");
|
2023-08-24 19:55:31 +00:00
|
|
|
disk_partition_clr_uuid(info);
|
2014-06-06 03:48:26 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2002-11-03 00:38:21 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2023-08-24 19:55:26 +00:00
|
|
|
static void __maybe_unused part_print_dos(struct blk_desc *desc)
|
2002-11-03 00:38:21 +00:00
|
|
|
{
|
2012-10-08 08:14:40 +00:00
|
|
|
printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
|
2023-08-24 19:55:26 +00:00
|
|
|
print_partition_extended(desc, 0, 0, 1, 0);
|
2002-11-03 00:38:21 +00:00
|
|
|
}
|
|
|
|
|
2023-08-24 19:55:26 +00:00
|
|
|
static int __maybe_unused part_get_info_dos(struct blk_desc *desc, int part,
|
|
|
|
struct disk_partition *info)
|
2002-11-03 00:38:21 +00:00
|
|
|
{
|
2023-08-24 19:55:26 +00:00
|
|
|
return part_get_info_extended(desc, 0, 0, 1, part, info, 0);
|
2002-11-03 00:38:21 +00:00
|
|
|
}
|
|
|
|
|
2016-09-09 08:27:16 +00:00
|
|
|
int is_valid_dos_buf(void *buf)
|
|
|
|
{
|
|
|
|
return test_block_type(buf) == DOS_MBR ? 0 : -1;
|
|
|
|
}
|
|
|
|
|
2023-02-05 22:36:33 +00:00
|
|
|
#if IS_ENABLED(CONFIG_CMD_MBR)
|
2020-12-23 12:55:14 +00:00
|
|
|
static void lba_to_chs(lbaint_t lba, unsigned char *rc, unsigned char *rh,
|
|
|
|
unsigned char *rs)
|
|
|
|
{
|
|
|
|
unsigned int c, h, s;
|
|
|
|
/* use fixed CHS geometry */
|
|
|
|
unsigned int sectpertrack = 63;
|
|
|
|
unsigned int heads = 255;
|
|
|
|
|
|
|
|
c = (lba + 1) / sectpertrack / heads;
|
|
|
|
h = (lba + 1) / sectpertrack - c * heads;
|
|
|
|
s = (lba + 1) - (c * heads + h) * sectpertrack;
|
|
|
|
|
|
|
|
if (c > 1023) {
|
|
|
|
c = 1023;
|
|
|
|
h = 254;
|
|
|
|
s = 63;
|
|
|
|
}
|
|
|
|
|
|
|
|
*rc = c & 0xff;
|
|
|
|
*rh = h;
|
|
|
|
*rs = s + ((c & 0x300) >> 2);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void mbr_fill_pt_entry(dos_partition_t *pt, lbaint_t start,
|
|
|
|
lbaint_t relative, lbaint_t size, uchar sys_ind, bool bootable)
|
|
|
|
{
|
|
|
|
pt->boot_ind = bootable ? 0x80 : 0x00;
|
|
|
|
pt->sys_ind = sys_ind;
|
|
|
|
lba_to_chs(start, &pt->cyl, &pt->head, &pt->sector);
|
|
|
|
lba_to_chs(start + size - 1, &pt->end_cyl, &pt->end_head, &pt->end_sector);
|
|
|
|
put_unaligned_le32(relative, &pt->start4);
|
|
|
|
put_unaligned_le32(size, &pt->size4);
|
|
|
|
}
|
|
|
|
|
|
|
|
int write_mbr_partitions(struct blk_desc *dev,
|
|
|
|
struct disk_partition *p, int count, unsigned int disksig)
|
|
|
|
{
|
|
|
|
ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev->blksz);
|
|
|
|
lbaint_t ext_part_start = 0, ext_part_size = 0, ext_part_sect = 0;
|
|
|
|
dos_partition_t *pt;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
memset(buffer, 0, dev->blksz);
|
|
|
|
buffer[DOS_PART_MAGIC_OFFSET] = 0x55;
|
|
|
|
buffer[DOS_PART_MAGIC_OFFSET + 1] = 0xaa;
|
|
|
|
put_unaligned_le32(disksig, &buffer[DOS_PART_DISKSIG_OFFSET]);
|
|
|
|
pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
|
|
|
|
|
|
|
|
/* create all primary partitions */
|
|
|
|
for (i = 0; i < 4 && i < count; i++, pt++) {
|
|
|
|
mbr_fill_pt_entry(pt, p[i].start, p[i].start, p[i].size,
|
|
|
|
p[i].sys_ind, p[i].bootable);
|
|
|
|
if (is_extended(p[i].sys_ind)) {
|
|
|
|
ext_part_start = p[i].start;
|
|
|
|
ext_part_size = p[i].size;
|
|
|
|
ext_part_sect = p[i].start;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (i < count && !ext_part_start) {
|
|
|
|
printf("%s: extended partition is needed for more than 4 partitions\n",
|
|
|
|
__func__);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* write MBR */
|
|
|
|
if (blk_dwrite(dev, 0, 1, buffer) != 1) {
|
|
|
|
printf("%s: failed writing 'MBR' (1 blks at 0x0)\n",
|
|
|
|
__func__);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* create extended volumes */
|
|
|
|
for (; i < count; i++) {
|
|
|
|
lbaint_t next_ebr = 0;
|
|
|
|
|
|
|
|
memset(buffer, 0, dev->blksz);
|
|
|
|
buffer[DOS_PART_MAGIC_OFFSET] = 0x55;
|
|
|
|
buffer[DOS_PART_MAGIC_OFFSET + 1] = 0xaa;
|
|
|
|
pt = (dos_partition_t *) (buffer + DOS_PART_TBL_OFFSET);
|
|
|
|
|
|
|
|
mbr_fill_pt_entry(pt, p[i].start, p[i].start - ext_part_sect,
|
|
|
|
p[i].size, p[i].sys_ind, p[i].bootable);
|
|
|
|
|
|
|
|
if (i + 1 < count) {
|
|
|
|
pt++;
|
|
|
|
next_ebr = p[i].start + p[i].size;
|
|
|
|
mbr_fill_pt_entry(pt, next_ebr,
|
|
|
|
next_ebr - ext_part_start,
|
|
|
|
p[i+1].start + p[i+1].size - next_ebr,
|
|
|
|
DOS_PART_TYPE_EXTENDED, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* write EBR */
|
|
|
|
if (blk_dwrite(dev, ext_part_sect, 1, buffer) != 1) {
|
|
|
|
printf("%s: failed writing 'EBR' (1 blks at 0x%lx)\n",
|
|
|
|
__func__, ext_part_sect);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
ext_part_sect = next_ebr;
|
|
|
|
}
|
|
|
|
|
2021-01-28 08:10:07 +00:00
|
|
|
/* Update the partition table entries*/
|
2021-06-07 09:21:15 +00:00
|
|
|
part_init(dev);
|
2021-01-28 08:10:07 +00:00
|
|
|
|
2020-12-23 12:55:14 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int layout_mbr_partitions(struct disk_partition *p, int count,
|
|
|
|
lbaint_t total_sectors)
|
|
|
|
{
|
|
|
|
struct disk_partition *ext = NULL;
|
|
|
|
int i, j;
|
|
|
|
lbaint_t ext_vol_start;
|
|
|
|
|
|
|
|
/* calculate primary partitions start and size if needed */
|
|
|
|
if (!p[0].start)
|
|
|
|
p[0].start = DOS_PART_DEFAULT_GAP;
|
|
|
|
for (i = 0; i < 4 && i < count; i++) {
|
|
|
|
if (!p[i].start)
|
|
|
|
p[i].start = p[i - 1].start + p[i - 1].size;
|
|
|
|
if (!p[i].size) {
|
|
|
|
lbaint_t end = total_sectors;
|
|
|
|
lbaint_t allocated = 0;
|
|
|
|
|
|
|
|
for (j = i + 1; j < 4 && j < count; j++) {
|
|
|
|
if (p[j].start) {
|
|
|
|
end = p[j].start;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
allocated += p[j].size;
|
|
|
|
}
|
|
|
|
p[i].size = end - allocated - p[i].start;
|
|
|
|
}
|
|
|
|
if (p[i].sys_ind == 0x05)
|
|
|
|
ext = &p[i];
|
|
|
|
}
|
|
|
|
|
2021-10-23 23:26:02 +00:00
|
|
|
if (count < 4)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (!ext) {
|
|
|
|
log_err("extended partition is needed for more than 4 partitions\n");
|
|
|
|
return -EINVAL;
|
2020-12-23 12:55:14 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* calculate extended volumes start and size if needed */
|
|
|
|
ext_vol_start = ext->start;
|
|
|
|
for (i = 4; i < count; i++) {
|
|
|
|
if (!p[i].start)
|
|
|
|
p[i].start = ext_vol_start + DOS_PART_DEFAULT_GAP;
|
|
|
|
if (!p[i].size) {
|
|
|
|
lbaint_t end = ext->start + ext->size;
|
|
|
|
lbaint_t allocated = 0;
|
|
|
|
|
|
|
|
for (j = i + 1; j < count; j++) {
|
|
|
|
if (p[j].start) {
|
|
|
|
end = p[j].start - DOS_PART_DEFAULT_GAP;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
allocated += p[j].size + DOS_PART_DEFAULT_GAP;
|
|
|
|
}
|
|
|
|
p[i].size = end - allocated - p[i].start;
|
|
|
|
}
|
|
|
|
ext_vol_start = p[i].start + p[i].size;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2023-08-24 19:55:26 +00:00
|
|
|
int write_mbr_sector(struct blk_desc *desc, void *buf)
|
2016-09-09 08:27:16 +00:00
|
|
|
{
|
|
|
|
if (is_valid_dos_buf(buf))
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
/* write MBR */
|
2023-08-24 19:55:26 +00:00
|
|
|
if (blk_dwrite(desc, 0, 1, buf) != 1) {
|
2016-09-09 08:27:16 +00:00
|
|
|
printf("%s: failed writing '%s' (1 blks at 0x0)\n",
|
|
|
|
__func__, "MBR");
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2021-01-28 08:10:07 +00:00
|
|
|
/* Update the partition table entries*/
|
2023-08-24 19:55:26 +00:00
|
|
|
part_init(desc);
|
2021-01-28 08:10:07 +00:00
|
|
|
|
2016-09-09 08:27:16 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
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2016-02-29 22:25:47 +00:00
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U_BOOT_PART_TYPE(dos) = {
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|
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.name = "DOS",
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.part_type = PART_TYPE_DOS,
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2016-09-09 08:27:15 +00:00
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.max_entries = DOS_ENTRY_NUMBERS,
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2016-02-29 22:25:48 +00:00
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.get_info = part_get_info_ptr(part_get_info_dos),
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2016-02-29 22:26:04 +00:00
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.print = part_print_ptr(part_print_dos),
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.test = part_test_dos,
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2016-02-29 22:25:47 +00:00
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};
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