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2e3a191e89
Add support for partition table defined in Device Tree. Similar to how it's done with MTD, add support for defining a fixed partition table in device tree. A common scenario for this is fixed block (eMMC) embedded devices that have no MBR or GPT partition table to save storage space. Bootloader access the block device with absolute address of data. This is to complete the functionality with an equivalent implementation with providing partition table with bootargs, for case where the booargs can't be modified and tweaking the Device Tree is the only solution to have an usabe partition table. The implementation follow the fixed-partitions parser used on MTD devices where a "partitions" node is expected to be declared with "fixed-partitions" compatible in the OF node of the disk device (mmc-card for eMMC for example) and each child node declare a label and a reg with offset and size. If label is not declared, the node name is used as fallback. Eventually is also possible to declare the read-only property to flag the partition as read-only. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20241002221306.4403-6-ansuelsmth@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
283 lines
9.9 KiB
Plaintext
283 lines
9.9 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0
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#
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# Partition configuration
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#
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menu "Partition Types"
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config PARTITION_ADVANCED
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bool "Advanced partition selection"
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help
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Say Y here if you would like to use hard disks under Linux which
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were partitioned under an operating system running on a different
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architecture than your Linux system.
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Note that the answer to this question won't directly affect the
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kernel: saying N will just cause the configurator to skip all
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the questions about foreign partitioning schemes.
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If unsure, say N.
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config ACORN_PARTITION
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bool "Acorn partition support" if PARTITION_ADVANCED
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default y if ARCH_ACORN
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help
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Support hard disks partitioned under Acorn operating systems.
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config ACORN_PARTITION_CUMANA
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bool "Cumana partition support" if PARTITION_ADVANCED
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default y if ARCH_ACORN
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depends on ACORN_PARTITION
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help
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Say Y here if you would like to use hard disks under Linux which
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were partitioned using the Cumana interface on Acorn machines.
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config ACORN_PARTITION_EESOX
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bool "EESOX partition support" if PARTITION_ADVANCED
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default y if ARCH_ACORN
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depends on ACORN_PARTITION
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config ACORN_PARTITION_ICS
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bool "ICS partition support" if PARTITION_ADVANCED
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default y if ARCH_ACORN
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depends on ACORN_PARTITION
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help
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Say Y here if you would like to use hard disks under Linux which
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were partitioned using the ICS interface on Acorn machines.
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config ACORN_PARTITION_ADFS
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bool "Native filecore partition support" if PARTITION_ADVANCED
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default y if ARCH_ACORN
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depends on ACORN_PARTITION
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help
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The Acorn Disc Filing System is the standard file system of the
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RiscOS operating system which runs on Acorn's ARM-based Risc PC
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systems and the Acorn Archimedes range of machines. If you say
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`Y' here, Linux will support disk partitions created under ADFS.
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config ACORN_PARTITION_POWERTEC
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bool "PowerTec partition support" if PARTITION_ADVANCED
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default y if ARCH_ACORN
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depends on ACORN_PARTITION
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help
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Support reading partition tables created on Acorn machines using
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the PowerTec SCSI drive.
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config ACORN_PARTITION_RISCIX
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bool "RISCiX partition support" if PARTITION_ADVANCED
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default y if ARCH_ACORN
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depends on ACORN_PARTITION
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help
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Once upon a time, there was a native Unix port for the Acorn series
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of machines called RISCiX. If you say 'Y' here, Linux will be able
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to read disks partitioned under RISCiX.
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config AIX_PARTITION
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bool "AIX basic partition table support" if PARTITION_ADVANCED
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help
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Say Y here if you would like to be able to read the hard disk
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partition table format used by IBM or Motorola PowerPC machines
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running AIX. AIX actually uses a Logical Volume Manager, where
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"logical volumes" can be spread across one or multiple disks,
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but this driver works only for the simple case of partitions which
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are contiguous.
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Otherwise, say N.
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config OSF_PARTITION
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bool "Alpha OSF partition support" if PARTITION_ADVANCED
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default y if ALPHA
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help
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Say Y here if you would like to use hard disks under Linux which
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were partitioned on an Alpha machine.
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config AMIGA_PARTITION
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bool "Amiga partition table support" if PARTITION_ADVANCED
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default y if (AMIGA || AFFS_FS=y)
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help
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Say Y here if you would like to use hard disks under Linux which
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were partitioned under AmigaOS.
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config ATARI_PARTITION
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bool "Atari partition table support" if PARTITION_ADVANCED
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default y if ATARI
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help
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Say Y here if you would like to use hard disks under Linux which
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were partitioned under the Atari OS.
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config IBM_PARTITION
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bool "IBM disk label and partition support"
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depends on PARTITION_ADVANCED && S390
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help
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Say Y here if you would like to be able to read the hard disk
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partition table format used by IBM DASD disks operating under CMS.
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Otherwise, say N.
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config MAC_PARTITION
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bool "Macintosh partition map support" if PARTITION_ADVANCED
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default y if (MAC || PPC_PMAC)
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help
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Say Y here if you would like to use hard disks under Linux which
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were partitioned on a Macintosh.
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config MSDOS_PARTITION
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bool "PC BIOS (MSDOS partition tables) support" if PARTITION_ADVANCED
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default y
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help
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Say Y here.
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config BSD_DISKLABEL
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bool "BSD disklabel (FreeBSD partition tables) support"
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depends on PARTITION_ADVANCED && MSDOS_PARTITION
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help
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FreeBSD uses its own hard disk partition scheme on your PC. It
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requires only one entry in the primary partition table of your disk
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and manages it similarly to DOS extended partitions, putting in its
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first sector a new partition table in BSD disklabel format. Saying Y
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here allows you to read these disklabels and further mount FreeBSD
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partitions from within Linux if you have also said Y to "UFS
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file system support", above. If you don't know what all this is
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about, say N.
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config MINIX_SUBPARTITION
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bool "Minix subpartition support"
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depends on PARTITION_ADVANCED && MSDOS_PARTITION
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help
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Minix 2.0.0/2.0.2 subpartition table support for Linux.
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Say Y here if you want to mount and use Minix 2.0.0/2.0.2
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subpartitions.
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config SOLARIS_X86_PARTITION
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bool "Solaris (x86) partition table support"
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depends on PARTITION_ADVANCED && MSDOS_PARTITION
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help
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Like most systems, Solaris x86 uses its own hard disk partition
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table format, incompatible with all others. Saying Y here allows you
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to read these partition tables and further mount Solaris x86
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partitions from within Linux if you have also said Y to "UFS
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file system support", above.
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config UNIXWARE_DISKLABEL
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bool "Unixware slices support"
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depends on PARTITION_ADVANCED && MSDOS_PARTITION
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help
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Like some systems, UnixWare uses its own slice table inside a
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partition (VTOC - Virtual Table of Contents). Its format is
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incompatible with all other OSes. Saying Y here allows you to read
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VTOC and further mount UnixWare partitions read-only from within
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Linux if you have also said Y to "UFS file system support" or
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"System V and Coherent file system support", above.
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This is mainly used to carry data from a UnixWare box to your
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Linux box via a removable medium like magneto-optical, ZIP or
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removable IDE drives. Note, however, that a good portable way to
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transport files and directories between unixes (and even other
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operating systems) is given by the tar program ("man tar" or
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preferably "info tar").
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If you don't know what all this is about, say N.
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config LDM_PARTITION
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bool "Windows Logical Disk Manager (Dynamic Disk) support"
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depends on PARTITION_ADVANCED
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help
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Say Y here if you would like to use hard disks under Linux which
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were partitioned using Windows 2000's/XP's or Vista's Logical Disk
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Manager. They are also known as "Dynamic Disks".
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Note this driver only supports Dynamic Disks with a protective MBR
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label, i.e. DOS partition table. It does not support GPT labelled
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Dynamic Disks yet as can be created with Vista.
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Windows 2000 introduced the concept of Dynamic Disks to get around
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the limitations of the PC's partitioning scheme. The Logical Disk
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Manager allows the user to repartition a disk and create spanned,
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mirrored, striped or RAID volumes, all without the need for
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rebooting.
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Normal partitions are now called Basic Disks under Windows 2000, XP,
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and Vista.
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For a fuller description read <file:Documentation/admin-guide/ldm.rst>.
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If unsure, say N.
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config LDM_DEBUG
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bool "Windows LDM extra logging"
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depends on LDM_PARTITION
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help
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Say Y here if you would like LDM to log verbosely. This could be
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helpful if the driver doesn't work as expected and you'd like to
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report a bug.
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If unsure, say N.
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config SGI_PARTITION
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bool "SGI partition support" if PARTITION_ADVANCED
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default y if DEFAULT_SGI_PARTITION
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help
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Say Y here if you would like to be able to read the hard disk
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partition table format used by SGI machines.
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config ULTRIX_PARTITION
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bool "Ultrix partition table support" if PARTITION_ADVANCED
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default y if MACH_DECSTATION
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help
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Say Y here if you would like to be able to read the hard disk
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partition table format used by DEC (now Compaq) Ultrix machines.
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Otherwise, say N.
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config SUN_PARTITION
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bool "Sun partition tables support" if PARTITION_ADVANCED
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default y if (SPARC || SUN3 || SUN3X)
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help
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Like most systems, SunOS uses its own hard disk partition table
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format, incompatible with all others. Saying Y here allows you to
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read these partition tables and further mount SunOS partitions from
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within Linux if you have also said Y to "UFS file system support",
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above. This is mainly used to carry data from a SPARC under SunOS to
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your Linux box via a removable medium like magneto-optical or ZIP
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drives; note however that a good portable way to transport files and
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directories between unixes (and even other operating systems) is
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given by the tar program ("man tar" or preferably "info tar"). If
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you don't know what all this is about, say N.
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config KARMA_PARTITION
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bool "Karma Partition support"
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depends on PARTITION_ADVANCED
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help
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Say Y here if you would like to mount the Rio Karma MP3 player, as it
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uses a proprietary partition table.
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config EFI_PARTITION
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bool "EFI GUID Partition support" if PARTITION_ADVANCED
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default y
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select CRC32
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help
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Say Y here if you would like to use hard disks under Linux which
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were partitioned using EFI GPT.
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config SYSV68_PARTITION
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bool "SYSV68 partition table support" if PARTITION_ADVANCED
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default y if VME
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help
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Say Y here if you would like to be able to read the hard disk
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partition table format used by Motorola Delta machines (using
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sysv68).
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Otherwise, say N.
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config CMDLINE_PARTITION
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bool "Command line partition support" if PARTITION_ADVANCED
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help
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Say Y here if you want to read the partition table from bootargs.
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The format for the command line is just like mtdparts.
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config OF_PARTITION
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bool "Device Tree partition support" if PARTITION_ADVANCED
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depends on OF
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help
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Say Y here if you want to enable support for partition table
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defined in Device Tree. (mainly for eMMC)
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The format for the device tree node is just like MTD fixed-partition
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schema.
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endmenu
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