The optional parameter bootable is added in gpt command to set the
partition attribute flag "Legacy BIOS bootable"
This flag is used in extlinux and so in with distro to select
the boot partition where is located the configuration file
(please check out doc/README.distro for details).
With this parameter, U-Boot can be used to create the boot partition
needed for device using distro.
example of use:
setenv partitions "name=u-boot,size=60MiB;name=boot,size=60Mib,bootable;\
name=rootfs,size=0"
> gpt write mmc 0 $partitions
> part list mmc 0
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000022 0x0001e021 "u-boot"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
guid: cceb0b18-39cb-d547-9db7-03b405fa77d4
2 0x0001e022 0x0003c021 "boot"
attrs: 0x0000000000000004
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
guid: d4981a2b-0478-544e-9607-7fd3c651068d
3 0x0003c022 0x003a9fde "rootfs"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
guid: 6d6c9a36-e919-264d-a9ee-bd00379686c7
> part list mmc 0 -bootable devplist
> printenv devplist
devplist=2
Then the distro scripts will search extlinux in partition 2
and not in the first partition.
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
./doc/README.gpt entry has been updated to explain usage of "gpt verify"
command.
Signed-off-by: Lukasz Majewski <l.majewski@majess.pl>
Reviewed-by: Tom Rini <trini@konsulko.com>
short strings can be used in type parameter of gpt command
to replace the guid string for the types known by u-boot
partitions = name=boot,size=0x6bc00,type=data; \
name=root,size=0x7538ba00,type=linux;
gpt write mmc 0 $partitions
and they are also used to display the type of partition
in "part list" command
Partition Map for MMC device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00000022 0x0000037f "boot"
attrs: 0x0000000000000000
type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
type: data
guid: d117f98e-6f2c-d04b-a5b2-331a19f91cb2
2 0x00000380 0x003a9fdc "root"
attrs: 0x0000000000000000
type: 0fc63daf-8483-4772-8e79-3d69d8477de4
type: linux
guid: 25718777-d0ad-7443-9e60-02cb591c9737
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
code under flag CONFIG_PARTITION_TYPE_GUID
add parameter "type" to select partition type guid
example of use with gpt command :
partitions = uuid_disk=${uuid_gpt_disk}; \
name=boot,size=0x6bc00,uuid=${uuid_gpt_boot}; \
name=root,size=0x7538ba00,uuid=${uuid_gpt_root}, \
type=0fc63daf-8483-4772-8e79-3d69d8477de4;
gpt write mmc 0 $partitions
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
Previously, Linux used the same GUID for the data partitions as Windows
(Basic data partition: EBD0A0A2-B9E5-4433-87C0-68B6B72699C7).
This created problems when dual-booting Linux and Windows in UEFI-GPT
Setup, so a new GUID (Linux filesystem data:
0FC63DAF-8483-4772-8E79-3D69D8477DE4) was defined jointly by GPT fdisk
and GNU Parted developers.
Signed-off-by: Patrick Delaunay <patrick.delaunay73@gmail.com>
Currently, an environment variable must be used to store the randomly
generated UUID for each partition. This is not necessary, so make storing
the UUID optional. Now passing uuid_disk and uuid are optional when random
UUIDs are enabled.
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Przemyslaw Marczak <p.marczak@samsung.com>
Check the Backup GPT table if the Primary GPT table is invalid.
Renamed "Secondary GPT" to "Backup GPT" as per:
UEFI Specification (Version 2.3.1, Errata A)
Signed-off-by: Steve Rae <srae@broadcom.com>
Changes:
- randomly generate partition uuid if any is undefined and CONFIG_RAND_UUID
is defined
- print debug info about set/unset/generated uuid
- update doc/README.gpt
Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Lukasz Majewski <l.majewski@samsung.com>
Cc: Piotr Wilczek <p.wilczek@samsung.com>
Cc: Tom Rini <trini@ti.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Patrick Delaunay
Lukasz Majewski
Rob Herring
Steve Rae
Przemyslaw Marczak
Wolfgang Denk
Lukasz Majewski