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125194e6a1
Some devices have multiple partition types available on the same media. It is sometimes useful to see these to check that everything is working correctly. Provide a way to manually set the partition-table type, avoiding the auto-detection process. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
228 lines
6.6 KiB
ReStructuredText
228 lines
6.6 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 set <interface> <dev> <part> <type>
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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 set' command sets the type of a partition. This is useful when
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autodetection fails or does not do the correct thing:
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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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type
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partition type to use (see 'part types') to check available types
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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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This shows looking at a device with multiple partition tables::
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=> virtio scan
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=> part list virtio 0
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Partition Map for VirtIO 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 0x00000040 0x0092b093 "ISO9660"
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attrs: 0x1000000000000001
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type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
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guid: a0891d7e-b930-4513-94d8-f629dbd637b2
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2 0x0092b094 0x0092d7e7 "Appended2"
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attrs: 0x0000000000000000
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type: c12a7328-f81f-11d2-ba4b-00a0c93ec93b
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guid: a0891d7e-b930-4513-94db-f629dbd637b2
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3 0x0092d7e8 0x0092da3f "Gap1"
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attrs: 0x1000000000000001
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type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
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guid: a0891d7e-b930-4513-94da-f629dbd637b2
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=> ls virtio 0:3
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=> part types
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Supported partition tables: EFI, DOS, ISO
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=> part set virtio 0 dos
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Partition Map for VirtIO device 0 -- Partition Type: DOS
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Part Start Sector Num Sectors UUID Type
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1 1 9624191 00000000-01 ee
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=> part set virtio 0 iso
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Partition Map for VirtIO device 0 -- Partition Type: ISO
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Part Start Sect x Size Type
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1 3020 4 512 U-Boot
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2 9613460 10068 512 U-Boot
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=> part set virtio 0 efi
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Partition Map for VirtIO 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 0x00000040 0x0092b093 "ISO9660"
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attrs: 0x1000000000000001
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type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
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guid: a0891d7e-b930-4513-94d8-f629dbd637b2
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2 0x0092b094 0x0092d7e7 "Appended2"
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attrs: 0x0000000000000000
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type: c12a7328-f81f-11d2-ba4b-00a0c93ec93b
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guid: a0891d7e-b930-4513-94db-f629dbd637b2
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3 0x0092d7e8 0x0092da3f "Gap1"
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attrs: 0x1000000000000001
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type: ebd0a0a2-b9e5-4433-87c0-68b6b72699c7
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guid: a0891d7e-b930-4513-94da-f629dbd637b2
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=>
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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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