summaryrefslogtreecommitdiffstats
path: root/drivers/mtd/Kconfig
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /drivers/mtd/Kconfig
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/mtd/Kconfig')
-rw-r--r--drivers/mtd/Kconfig225
1 files changed, 225 insertions, 0 deletions
diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig
new file mode 100644
index 0000000000..796a2eccbe
--- /dev/null
+++ b/drivers/mtd/Kconfig
@@ -0,0 +1,225 @@
+menuconfig MTD
+ tristate "Memory Technology Device (MTD) support"
+ imply NVMEM
+ help
+ Memory Technology Devices are flash, RAM and similar chips, often
+ used for solid state file systems on embedded devices. This option
+ will provide the generic support for MTD drivers to register
+ themselves with the kernel and for potential users of MTD devices
+ to enumerate the devices which are present and obtain a handle on
+ them. It will also allow you to select individual drivers for
+ particular hardware and users of MTD devices. If unsure, say N.
+
+if MTD
+
+config MTD_TESTS
+ tristate "MTD tests support (DANGEROUS)"
+ depends on m
+ help
+ This option includes various MTD tests into compilation. The tests
+ should normally be compiled as kernel modules. The modules perform
+ various checks and verifications when loaded.
+
+ WARNING: some of the tests will ERASE entire MTD device which they
+ test. Do not use these tests unless you really know what you do.
+
+menu "Partition parsers"
+source "drivers/mtd/parsers/Kconfig"
+endmenu
+
+comment "User Modules And Translation Layers"
+
+#
+# MTD block device support is select'ed if needed
+#
+config MTD_BLKDEVS
+ tristate
+
+config MTD_BLOCK
+ tristate "Caching block device access to MTD devices"
+ depends on BLOCK
+ select MTD_BLKDEVS
+ help
+ Although most flash chips have an erase size too large to be useful
+ as block devices, it is possible to use MTD devices which are based
+ on RAM chips in this manner. This block device is a user of MTD
+ devices performing that function.
+
+ Note that mounting a JFFS2 filesystem doesn't require using mtdblock.
+ It's possible to mount a rootfs using the MTD device on the "root="
+ bootargs as "root=mtd2" or "root=mtd:name_of_device".
+
+ Later, it may be extended to perform read/erase/modify/write cycles
+ on flash chips to emulate a smaller block size. Needless to say,
+ this is very unsafe, but could be useful for file systems which are
+ almost never written to.
+
+ You do not need this option for use with the DiskOnChip devices. For
+ those, enable NFTL support (CONFIG_NFTL) instead.
+
+config MTD_BLOCK_RO
+ tristate "Readonly block device access to MTD devices"
+ depends on MTD_BLOCK!=y && BLOCK
+ select MTD_BLKDEVS
+ help
+ This allows you to mount read-only file systems (such as cramfs)
+ from an MTD device, without the overhead (and danger) of the caching
+ driver.
+
+ You do not need this option for use with the DiskOnChip devices. For
+ those, enable NFTL support (CONFIG_NFTL) instead.
+
+comment "Note that in some cases UBI block is preferred. See MTD_UBI_BLOCK."
+ depends on MTD_BLOCK || MTD_BLOCK_RO
+
+config FTL
+ tristate "FTL (Flash Translation Layer) support"
+ depends on BLOCK
+ select MTD_BLKDEVS
+ help
+ This provides support for the original Flash Translation Layer which
+ is part of the PCMCIA specification. It uses a kind of pseudo-
+ file system on a flash device to emulate a block device with
+ 512-byte sectors, on top of which you put a 'normal' file system.
+
+ You may find that the algorithms used in this code are patented
+ unless you live in the Free World where software patents aren't
+ legal - in the USA you are only permitted to use this on PCMCIA
+ hardware, although under the terms of the GPL you're obviously
+ permitted to copy, modify and distribute the code as you wish. Just
+ not use it.
+
+config NFTL
+ tristate "NFTL (NAND Flash Translation Layer) support"
+ depends on BLOCK
+ select MTD_BLKDEVS
+ help
+ This provides support for the NAND Flash Translation Layer which is
+ used on M-Systems' DiskOnChip devices. It uses a kind of pseudo-
+ file system on a flash device to emulate a block device with
+ 512-byte sectors, on top of which you put a 'normal' file system.
+
+ You may find that the algorithms used in this code are patented
+ unless you live in the Free World where software patents aren't
+ legal - in the USA you are only permitted to use this on DiskOnChip
+ hardware, although under the terms of the GPL you're obviously
+ permitted to copy, modify and distribute the code as you wish. Just
+ not use it.
+
+config NFTL_RW
+ bool "Write support for NFTL"
+ depends on NFTL
+ help
+ Support for writing to the NAND Flash Translation Layer, as used
+ on the DiskOnChip.
+
+config INFTL
+ tristate "INFTL (Inverse NAND Flash Translation Layer) support"
+ depends on BLOCK
+ select MTD_BLKDEVS
+ help
+ This provides support for the Inverse NAND Flash Translation
+ Layer which is used on M-Systems' newer DiskOnChip devices. It
+ uses a kind of pseudo-file system on a flash device to emulate
+ a block device with 512-byte sectors, on top of which you put
+ a 'normal' file system.
+
+ You may find that the algorithms used in this code are patented
+ unless you live in the Free World where software patents aren't
+ legal - in the USA you are only permitted to use this on DiskOnChip
+ hardware, although under the terms of the GPL you're obviously
+ permitted to copy, modify and distribute the code as you wish. Just
+ not use it.
+
+config RFD_FTL
+ tristate "Resident Flash Disk (Flash Translation Layer) support"
+ depends on BLOCK
+ select MTD_BLKDEVS
+ help
+ This provides support for the flash translation layer known
+ as the Resident Flash Disk (RFD), as used by the Embedded BIOS
+ of General Software. There is a blurb at:
+
+ http://www.gensw.com/pages/prod/bios/rfd.htm
+
+config SSFDC
+ tristate "NAND SSFDC (SmartMedia) read only translation layer"
+ depends on BLOCK
+ select MTD_BLKDEVS
+ help
+ This enables read only access to SmartMedia formatted NAND
+ flash. You can mount it with FAT file system.
+
+config SM_FTL
+ tristate "SmartMedia/xD new translation layer"
+ depends on BLOCK
+ select MTD_BLKDEVS
+ select MTD_NAND_CORE
+ select MTD_NAND_ECC_SW_HAMMING
+ help
+ This enables EXPERIMENTAL R/W support for SmartMedia/xD
+ FTL (Flash translation layer).
+ Write support is only lightly tested, therefore this driver
+ isn't recommended to use with valuable data (anyway if you have
+ valuable data, do backups regardless of software/hardware you
+ use, because you never know what will eat your data...)
+ If you only need R/O access, you can use older R/O driver
+ (CONFIG_SSFDC)
+
+config MTD_OOPS
+ tristate "Log panic/oops to an MTD buffer"
+ help
+ This enables panic and oops messages to be logged to a circular
+ buffer in a flash partition where it can be read back at some
+ later point.
+
+config MTD_PSTORE
+ tristate "Log panic/oops to an MTD buffer based on pstore"
+ depends on PSTORE_BLK
+ help
+ This enables panic and oops messages to be logged to a circular
+ buffer in a flash partition where it can be read back as files after
+ mounting pstore filesystem.
+
+ If unsure, say N.
+
+config MTD_SWAP
+ tristate "Swap on MTD device support"
+ depends on MTD && SWAP
+ select MTD_BLKDEVS
+ help
+ Provides volatile block device driver on top of mtd partition
+ suitable for swapping. The mapping of written blocks is not saved.
+ The driver provides wear leveling by storing erase counter into the
+ OOB.
+
+config MTD_PARTITIONED_MASTER
+ bool "Retain master device when partitioned"
+ default n
+ depends on MTD
+ help
+ For historical reasons, by default, either a master is present or
+ several partitions are present, but not both. The concern was that
+ data listed in multiple partitions was dangerous; however, SCSI does
+ this and it is frequently useful for applications. This config option
+ leaves the master in even if the device is partitioned. It also makes
+ the parent of the partition device be the master device, rather than
+ what lies behind the master.
+
+source "drivers/mtd/chips/Kconfig"
+
+source "drivers/mtd/maps/Kconfig"
+
+source "drivers/mtd/devices/Kconfig"
+
+source "drivers/mtd/nand/Kconfig"
+
+source "drivers/mtd/lpddr/Kconfig"
+
+source "drivers/mtd/spi-nor/Kconfig"
+
+source "drivers/mtd/ubi/Kconfig"
+
+source "drivers/mtd/hyperbus/Kconfig"
+
+endif # MTD