2002-11-03 09:38:21 +09:00
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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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2013-07-08 16:37:19 +09:00
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* SPDX-License-Identifier: GPL-2.0+
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2002-11-03 09:38:21 +09:00
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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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#include <command.h>
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#include <ide.h>
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2015-09-03 08:24:58 +09:00
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#include <memalign.h>
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2002-11-03 09:38:21 +09:00
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#include "part_dos.h"
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2013-03-01 00:03:46 +09:00
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#ifdef HAVE_BLOCK_DEVICE
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2002-11-03 09:38:21 +09:00
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2014-06-06 12:48:26 +09:00
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#define DOS_PART_DEFAULT_SECTOR 512
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2002-11-03 09:38:21 +09:00
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/* Convert char[4] in little endian format to the host format integer
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*/
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2015-08-26 04:24:13 +09:00
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static inline unsigned int le32_to_int(unsigned char *le32)
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2002-11-03 09:38:21 +09:00
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{
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return ((le32[3] << 24) +
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(le32[2] << 16) +
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(le32[1] << 8) +
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le32[0]
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);
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}
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static inline int is_extended(int part_type)
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{
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return (part_type == 0x5 ||
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part_type == 0xf ||
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part_type == 0x85);
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}
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2012-08-23 20:31:43 +09:00
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static inline int is_bootable(dos_partition_t *p)
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{
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return p->boot_ind == 0x80;
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}
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2015-08-26 04:24:13 +09:00
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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 17:14:40 +09:00
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int part_num, unsigned int disksig)
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2002-11-03 09:38:21 +09:00
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{
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2015-08-26 04:24:13 +09:00
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lbaint_t lba_start = ext_part_sector + le32_to_int (p->start4);
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lbaint_t lba_size = le32_to_int (p->size4);
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2002-11-03 09:38:21 +09:00
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2015-08-26 04:24:13 +09:00
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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 17:14:40 +09:00
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part_num, lba_start, lba_size, disksig, part_num, p->sys_ind,
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2012-08-23 20:31:43 +09:00
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(is_extended(p->sys_ind) ? " Extd" : ""),
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(is_bootable(p) ? " Boot" : ""));
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2002-11-03 09:38:21 +09:00
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}
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2003-09-11 07:30:53 +09:00
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static int test_block_type(unsigned char *buffer)
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{
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2013-04-09 14:46:14 +09:00
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int slot;
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struct dos_partition *p;
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2003-09-11 07:30:53 +09:00
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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 14:46:14 +09:00
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p = (struct dos_partition *)&buffer[DOS_PART_TBL_OFFSET];
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for (slot = 0; slot < 3; slot++) {
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if (p->boot_ind != 0 && p->boot_ind != 0x80) {
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if (!slot &&
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(strncmp((char *)&buffer[DOS_PBR_FSTYPE_OFFSET],
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"FAT", 3) == 0 ||
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strncmp((char *)&buffer[DOS_PBR32_FSTYPE_OFFSET],
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"FAT32", 5) == 0)) {
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return DOS_PBR; /* is PBR */
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} else {
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return -1;
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}
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}
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2010-07-19 18:36:57 +09:00
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}
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2003-09-11 07:30:53 +09:00
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return DOS_MBR; /* Is MBR */
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}
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2002-11-03 09:38:21 +09:00
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int test_part_dos (block_dev_desc_t *dev_desc)
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{
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2012-03-03 21:02:20 +09:00
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
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2002-11-03 09:38:21 +09:00
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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 22:17:40 +09:00
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if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *) buffer) != 1)
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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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return 0;
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2002-11-03 09:38:21 +09:00
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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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2012-10-08 17:14:38 +09:00
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static void print_partition_extended(block_dev_desc_t *dev_desc,
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2015-08-26 04:24:13 +09:00
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lbaint_t ext_part_sector,
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lbaint_t relative,
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2012-10-08 17:14:40 +09:00
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int part_num, unsigned int disksig)
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2002-11-03 09:38:21 +09:00
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{
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2012-03-03 21:02:20 +09:00
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
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2002-11-03 09:38:21 +09:00
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dos_partition_t *pt;
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int i;
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if (dev_desc->block_read(dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
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2015-08-26 04:24:13 +09:00
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printf ("** Can't read partition table on %d:" LBAFU " **\n",
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2002-11-03 09:38:21 +09:00
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dev_desc->dev, ext_part_sector);
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return;
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}
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2003-09-11 07:30:53 +09:00
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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 22:17:40 +09:00
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if (i != DOS_MBR) {
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2002-11-03 09:38:21 +09:00
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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 22:17:40 +09:00
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2012-10-08 17:14:40 +09:00
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if (!ext_part_sector)
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disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
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2002-11-03 09:38:21 +09:00
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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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2003-06-28 06:31:46 +09:00
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* fdisk does not show the extended partitions that
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2002-11-03 09:38:21 +09:00
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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 17:14:40 +09:00
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print_one_part(pt, ext_part_sector, part_num, disksig);
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2002-11-03 09:38:21 +09:00
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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)) {
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2015-08-26 04:24:13 +09:00
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lbaint_t lba_start
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= le32_to_int (pt->start4) + relative;
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2002-11-03 09:38:21 +09:00
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2012-10-08 17:14:38 +09:00
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print_partition_extended(dev_desc, lba_start,
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ext_part_sector == 0 ? lba_start : relative,
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2012-10-08 17:14:40 +09:00
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part_num, disksig);
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2002-11-03 09:38:21 +09:00
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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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2015-08-26 04:24:13 +09:00
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static int get_partition_info_extended (block_dev_desc_t *dev_desc,
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lbaint_t ext_part_sector,
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lbaint_t relative, int part_num,
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2012-09-21 18:51:00 +09:00
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int which_part, disk_partition_t *info,
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unsigned int disksig)
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2002-11-03 09:38:21 +09:00
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{
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2012-03-03 21:02:20 +09:00
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ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, dev_desc->blksz);
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2002-11-03 09:38:21 +09:00
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dos_partition_t *pt;
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int i;
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2014-06-06 12:48:26 +09:00
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int dos_type;
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2002-11-03 09:38:21 +09:00
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if (dev_desc->block_read (dev_desc->dev, ext_part_sector, 1, (ulong *) buffer) != 1) {
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2015-08-26 04:24:13 +09:00
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printf ("** Can't read partition table on %d:" LBAFU " **\n",
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2002-11-03 09:38:21 +09:00
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dev_desc->dev, ext_part_sector);
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return -1;
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}
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if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
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buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
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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 -1;
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}
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2012-09-21 18:51:00 +09:00
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#ifdef CONFIG_PARTITION_UUIDS
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if (!ext_part_sector)
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disksig = le32_to_int(&buffer[DOS_PART_DISKSIG_OFFSET]);
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#endif
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2002-11-03 09:38:21 +09:00
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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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2003-06-28 06:31:46 +09:00
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* fdisk does not show the extended partitions that
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* are not in the MBR
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2002-11-03 09:38:21 +09:00
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*/
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2009-09-28 18:40:38 +09:00
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if (((pt->boot_ind & ~0x80) == 0) &&
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(pt->sys_ind != 0) &&
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2003-05-20 23:25:27 +09:00
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(part_num == which_part) &&
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(is_extended(pt->sys_ind) == 0)) {
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2014-06-06 12:48:26 +09:00
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info->blksz = DOS_PART_DEFAULT_SECTOR;
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2014-05-27 03:52:23 +09:00
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info->start = (lbaint_t)(ext_part_sector +
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le32_to_int(pt->start4));
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info->size = (lbaint_t)le32_to_int(pt->size4);
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2002-11-03 09:38:21 +09:00
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switch(dev_desc->if_type) {
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case IF_TYPE_IDE:
|
2008-03-26 23:49:44 +09:00
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case IF_TYPE_SATA:
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2002-11-03 09:38:21 +09:00
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case IF_TYPE_ATAPI:
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2009-07-29 05:35:39 +09:00
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sprintf ((char *)info->name, "hd%c%d",
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'a' + dev_desc->dev, part_num);
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2002-11-03 09:38:21 +09:00
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break;
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case IF_TYPE_SCSI:
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2009-07-29 05:35:39 +09:00
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sprintf ((char *)info->name, "sd%c%d",
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'a' + dev_desc->dev, part_num);
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2002-11-03 09:38:21 +09:00
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break;
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case IF_TYPE_USB:
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2009-07-29 05:35:39 +09:00
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sprintf ((char *)info->name, "usbd%c%d",
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'a' + dev_desc->dev, part_num);
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2002-11-03 09:38:21 +09:00
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break;
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case IF_TYPE_DOC:
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2009-07-29 05:35:39 +09:00
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sprintf ((char *)info->name, "docd%c%d",
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'a' + dev_desc->dev, part_num);
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2002-11-03 09:38:21 +09:00
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break;
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default:
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2009-07-29 05:35:39 +09:00
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sprintf ((char *)info->name, "xx%c%d",
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'a' + dev_desc->dev, part_num);
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2002-11-03 09:38:21 +09:00
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break;
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}
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/* sprintf(info->type, "%d, pt->sys_ind); */
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2005-10-13 23:45:02 +09:00
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sprintf ((char *)info->type, "U-Boot");
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2012-08-23 20:31:43 +09:00
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info->bootable = is_bootable(pt);
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2012-09-21 18:51:00 +09:00
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#ifdef CONFIG_PARTITION_UUIDS
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sprintf(info->uuid, "%08x-%02x", disksig, part_num);
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#endif
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2002-11-03 09:38:21 +09:00
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return 0;
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}
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/* 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)) {
|
2015-08-26 04:24:13 +09:00
|
|
|
lbaint_t lba_start
|
|
|
|
= le32_to_int (pt->start4) + relative;
|
2002-11-03 09:38:21 +09:00
|
|
|
|
|
|
|
return get_partition_info_extended (dev_desc, lba_start,
|
|
|
|
ext_part_sector == 0 ? lba_start : relative,
|
2012-09-21 18:51:00 +09:00
|
|
|
part_num, which_part, info, disksig);
|
2002-11-03 09:38:21 +09:00
|
|
|
}
|
|
|
|
}
|
2014-06-06 12:48:26 +09:00
|
|
|
|
|
|
|
/* Check for DOS PBR if no partition is found */
|
|
|
|
dos_type = test_block_type(buffer);
|
|
|
|
|
|
|
|
if (dos_type == DOS_PBR) {
|
|
|
|
info->start = 0;
|
|
|
|
info->size = dev_desc->lba;
|
|
|
|
info->blksz = DOS_PART_DEFAULT_SECTOR;
|
|
|
|
info->bootable = 0;
|
|
|
|
sprintf ((char *)info->type, "U-Boot");
|
|
|
|
#ifdef CONFIG_PARTITION_UUIDS
|
|
|
|
info->uuid[0] = 0;
|
|
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2002-11-03 09:38:21 +09:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
void print_part_dos (block_dev_desc_t *dev_desc)
|
|
|
|
{
|
2012-10-08 17:14:40 +09:00
|
|
|
printf("Part\tStart Sector\tNum Sectors\tUUID\t\tType\n");
|
|
|
|
print_partition_extended(dev_desc, 0, 0, 1, 0);
|
2002-11-03 09:38:21 +09:00
|
|
|
}
|
|
|
|
|
|
|
|
int get_partition_info_dos (block_dev_desc_t *dev_desc, int part, disk_partition_t * info)
|
|
|
|
{
|
2012-09-21 18:51:00 +09:00
|
|
|
return get_partition_info_extended(dev_desc, 0, 0, 1, part, info, 0);
|
2002-11-03 09:38:21 +09:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2007-07-10 07:22:37 +09:00
|
|
|
#endif
|