u-boot.git/disk/part_dos.c, branch v2014.10 Unnamed repository; edit this file 'description' to name the repository. disk: part_dos.c: Add a PBR check when MBR checking fails 2014-06-11T20:27:05+00:00 Darwin Dingel darwin.dingel@alliedtelesis.co.nz 2014-06-06T03:48:26+00:00 4a36be9bdb42157401618681c9ac28e3824c120e Bug: SDCard with a messed up partition but still has a FAT signature intact is readable in Linux but unreadable in uboot with 'fatls'. Fix: When partition info checking fails, there is no checking for a FAT signature (DOS_PBR) which will fail 'fatls'. FAT signature checking is done when no valid partition is found in partition table. If FAT signature is found, the disk will be read as PBR and continue processing. Signed-off-by: Darwin Dingel <darwin.dingel@alliedtelesis.co.nz> 
Bug: SDCard with a messed up partition but still has a FAT signature
intact is readable in Linux but unreadable in uboot with 'fatls'.

Fix: When partition info checking fails, there is no checking for a
FAT signature (DOS_PBR) which will fail 'fatls'. FAT signature checking
is done when no valid partition is found in partition table. If FAT
signature is found, the disk will be read as PBR and continue
processing.

Signed-off-by: Darwin Dingel <darwin.dingel@alliedtelesis.co.nz>
disk: part_efi: clarify lbaint_t usage 2014-06-05T18:44:56+00:00 Steve Rae srae@broadcom.com 2014-05-26T18:52:23+00:00 e04350d2991ed628587e94b5b6d89c24f439e172 - update the comments regarding lbaint_t usage - cleanup casting of values related to the lbaint_t type - cleanup of a type that requires a u64 Tested on little endian ARMv7 and ARMv8 configurations Signed-off-by: Steve Rae <srae@broadcom.com> 
- update the comments regarding lbaint_t usage
- cleanup casting of values related to the lbaint_t type
- cleanup of a type that requires a u64

Tested on little endian ARMv7 and ARMv8 configurations

Signed-off-by: Steve Rae <srae@broadcom.com>
Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24T13:44:38+00:00 Wolfgang Denk wd@denx.de 2013-07-08T07:37:19+00:00 1a4596601fd395f3afb8f82f3f840c5e00bdd57a Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com> 
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
disk/part_dos: check harder for partition table 2013-05-01T20:24:01+00:00 Egbert Eich eich@suse.com 2013-04-09T05:46:14+00:00 9d956e0fefa39ba49250f61e3c7aa3dadafdb7fd Devices that used to have a whole disk FAT filesystem but got then partitioned will most likely still have a FAT or FAT32 signature in the first sector as this sector does not get overwritten by a partitioning tool (otherwise the tool would risk to kill the mbr). The current partition search algorithm will erronously detects such a device as a raw FAT device. Instead of looking for the FAT or FAT32 signatures immediately we use the same algorithm as used by the Linux kernel and first check for a valid boot indicator flag on each of the 4 partitions. If the value of this flag is invalid for the first entry we then do the raw partition check. If the flag for any higher partition is wrong we assume the device is neiter a MBR nor PBR device. Signed-off-by: Egbert Eich <eich@suse.com> 
Devices that used to have a whole disk FAT filesystem but got then
partitioned will most likely still have a FAT or FAT32 signature
in the first sector as this sector does not get overwritten by
a partitioning tool (otherwise the tool would risk to kill the mbr).

The current partition search algorithm will erronously detects such
a device as a raw FAT device.

Instead of looking for the FAT or FAT32 signatures immediately we
use the same algorithm as used by the Linux kernel and first check
for a valid boot indicator flag on each of the 4 partitions.
If the value of this flag is invalid for the first entry we then
do the raw partition check.
If the flag for any higher partition is wrong we assume the device
is neiter a MBR nor PBR device.

Signed-off-by: Egbert Eich <eich@suse.com>
disk: define HAVE_BLOCK_DEVICE in a common place 2013-03-14T18:06:44+00:00 Stephen Warren swarren@nvidia.com 2013-02-28T15:03:46+00:00 2c1af9dcdcf4ede8d153c0918beca9067ec0eb36 This set of ifdefs is used in a number of places. Move its definition somewhere common so it doesn't have to be repeated. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Tom Rini <trini@ti.com> Signed-off-by: Tom Warren <twarren@nvidia.com> 
This set of ifdefs is used in a number of places. Move its definition
somewhere common so it doesn't have to be repeated.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Tom Rini <trini@ti.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
disk: part_dos: print partition UUID in partition list 2012-10-17T14:59:11+00:00 Stephen Warren swarren@nvidia.com 2012-10-08T08:14:40+00:00 e2e9b37898c4d9f7330ce256d95a37da5064e0cf This information may be useful to compare against command "part uuid", or if you want to manually paste the information into the kernel command-line. Signed-off-by: Stephen Warren <swarren@nvidia.com> [trini: print_one_part / print_part_dos output strings didn't quite match before the changes] Signed-off-by: Tom Rini <trini@ti.com> 
This information may be useful to compare against command "part uuid",
or if you want to manually paste the information into the kernel
command-line.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
[trini: print_one_part / print_part_dos output strings didn't quite
match before the changes]
Signed-off-by: Tom Rini <trini@ti.com>
disk: part_dos: checkpatch cleanups 2012-10-17T14:59:11+00:00 Stephen Warren swarren@nvidia.com 2012-10-08T08:14:38+00:00 304b57113041bdbef00ef79b963a569abbc787f9 Minor cleanups required so later patches don't trigger checkpatch. Signed-off-by: Stephen Warren <swarren@nvidia.com> 
Minor cleanups required so later patches don't trigger checkpatch.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
disk: part_dos: don't claim whole-disk FAT filesystems 2012-10-08T18:15:04+00:00 Stephen Warren swarren@nvidia.com 2012-10-05T13:17:40+00:00 d1efb6442a0a0eec1933fce500f69008e2df70fd 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> 
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>
disk: part_msdos: parse and store partition UUID 2012-09-25T22:05:45+00:00 Stephen Warren swarren@nvidia.com 2012-09-21T09:51:00+00:00 d27b5f9398aba377ff2185fb4b8170eeca7c3b65 The MSDOS/MBR partition table includes a 32-bit unique ID, often referred to as the NT disk signature. When combined with a partition number within the table, this can form a unique ID similar in concept to EFI/GPT's partition UUID. This patch generates UUIDs in the format 0002dd75-01, which matches the format expected by the Linux kernel. Signed-off-by: Stephen Warren <swarren@nvidia.com> 
The MSDOS/MBR partition table includes a 32-bit unique ID, often referred
to as the NT disk signature. When combined with a partition number within
the table, this can form a unique ID similar in concept to EFI/GPT's
partition UUID.

This patch generates UUIDs in the format 0002dd75-01, which matches the
format expected by the Linux kernel.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
disk/part: check bootable flag for DOS partitions 2012-09-25T21:43:19+00:00 Rob Herring rob.herring@calxeda.com 2012-08-23T11:31:43+00:00 40e0e5686accd2f7ae7fd81297620d0e132624d9 Determine which partitions are bootable/active. In the partition listing, print "Boot" for partitions with the bootable/active flag set. Signed-off-by: Rob Herring <rob.herring@calxeda.com> 
Determine which partitions are bootable/active. In the partition listing,
print "Boot" for partitions with the bootable/active flag set.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>