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https://github.com/AsahiLinux/u-boot
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22e7f1d108
This implements the following command:
part type mmc 0:1
-> print partition type UUID
part type mmc 0:1 uuid
-> set environment variable to partition type UUID
"part type" can be useful when writing a bootcmd which searches for a
specific partition type to enable automatic discovery of partitions and
their intended usage or mount point.
Signed-off-by: Enric Balletbo i Serra <eballetbo@redhat.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Fix when CONFIG_PARTITION_TYPE_GUID is disabled and have the
command check for "types" before "type"]
Signed-off-by: Tom Rini <trini@konsulko.com>
154 lines
4.2 KiB
ReStructuredText
154 lines
4.2 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0+:
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part command
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===============
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Synopis
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-------
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::
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part uuid <interface> <dev>:<part> [varname]
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part list <interface> <dev> [flags] [varname]
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part start <interface> <dev> <part> <varname>
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part size <interface> <dev> <part> <varname>
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part number <interface> <dev> <part> <varname>
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part type <interface> <dev>:<part> [varname]
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part types
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Description
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-----------
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The `part` command is used to manage disk partition related commands.
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The 'part uuid' command prints or sets an environment variable to partition UUID
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interface
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interface for accessing the block device (mmc, sata, scsi, usb, ....)
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dev
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device number
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part
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partition number
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varname
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an optional environment variable to store the current partition UUID value into.
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The 'part list' command prints or sets an environment variable to the list of partitions
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interface
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interface for accessing the block device (mmc, sata, scsi, usb, ....)
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dev
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device number
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part
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partition number
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flags
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-bootable
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lists only bootable partitions
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varname
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an optional environment variable to store the list of partitions value into.
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The 'part start' commnad sets an environment variable to the start of the partition (in blocks),
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part can be either partition number or partition name.
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interface
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interface for accessing the block device (mmc, sata, scsi, usb, ....)
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dev
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device number
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part
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partition number
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varname
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a variable to store the current start of the partition value into.
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The 'part size' command sets an environment variable to the size of the partition (in blocks),
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part can be either partition number or partition name.
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interface
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interface for accessing the block device (mmc, sata, scsi, usb, ....)
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dev
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device number
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part
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partition number
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varname
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a variable to store the current size of the partition value into.
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The 'part number' command sets an environment variable to the partition number using the partition name,
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part must be specified as partition name.
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interface
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interface for accessing the block device (mmc, sata, scsi, usb, ....)
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dev
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device number
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part
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partition number
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varname
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a variable to store the current partition number value into
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The 'part type' command prints or sets an environment variable to the partition type UUID.
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interface
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interface for accessing the block device (mmc, sata, scsi, usb, ....)
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dev
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device number
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part
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partition number
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varname
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a variable to store the current partition type UUID value into
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The 'part types' command list supported partition table types.
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Examples
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--------
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::
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=> host bind 0 ./test_gpt_disk_image.bin
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=> part uuid host 0:1
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24156b69-3378-497f-bb3e-b982223de528
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=> part uuid host 0:1 varname
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=> env print varname
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varname=24156b69-3378-497f-bb3e-b982223de528
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=>
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=> part list host 0
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Partition Map for HOST device 0 -- Partition Type: EFI
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Part Start LBA End LBA Name
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Attributes
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Type GUID
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Partition GUID
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1 0x00000800 0x00000fff "second"
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attrs: 0x0000000000000000
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type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
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(data)
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guid: 24156b69-3378-497f-bb3e-b982223de528
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2 0x00001000 0x00001bff "first"
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attrs: 0x0000000000000000
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type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
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(data)
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guid: 5272ee44-29ab-4d46-af6c-4b45ac67d3b7
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=>
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=> part start host 0 2 varname
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=> env print varname
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varname=1000
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=>
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=> part size host 0 2 varname
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=> env print varname
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varname=c00
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=>
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=> part number host 0 2 varname
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=> env print varname
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varname=0x2
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=>
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=> part type host 0:1
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ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
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=> part type host 0:1 varname
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=> env print varname
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varname=ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
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=>
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=> part types
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Supported partition tables: EFI, AMIGA, DOS, ISO, MAC
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Return value
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------------
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The return value $? is set to 0 (true) if the command succededd. If an
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error occurs, the return value $? is set to 1 (false).
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