-# $Id: Kconfig,v 1.9 2005/06/16 08:49:29 sean Exp $
-
-menu "Memory Technology Devices (MTD)"
-
-config MTD
+menuconfig MTD
tristate "Memory Technology Device (MTD) support"
+ depends on HAS_IOMEM
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
+ 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_DEBUG
bool "Debugging"
- depends on MTD
help
This turns on low-level debugging for the entire MTD sub-system.
Normally, you should say 'N'.
help
Determines the verbosity level of the MTD debugging messages.
+config MTD_TESTS
+ tristate "MTD tests support"
+ 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.
+
config MTD_CONCAT
tristate "MTD concatenating support"
- depends on MTD
help
Support for concatenating several MTD devices into a single
(virtual) one. This allows you to have -for example- a JFFS(2)
config MTD_PARTITIONS
bool "MTD partitioning support"
- depends on MTD
help
If you have a device which needs to divide its flash chip(s) up
into multiple 'partitions', each of which appears to the user as
If you need code which can detect and parse this table, and register
MTD 'partitions' corresponding to each image in the table, enable
- this option.
+ this option.
You will still need the parsing functions to be called by the driver
- for your particular device. It won't happen automatically. The
- SA1100 map driver (CONFIG_MTD_SA1100) has an option for this, for
+ for your particular device. It won't happen automatically. The
+ SA1100 map driver (CONFIG_MTD_SA1100) has an option for this, for
example.
config MTD_REDBOOT_DIRECTORY_BLOCK
option.
The option specifies which Flash sectors holds the RedBoot
- partition table. A zero or positive value gives an absolete
+ partition table. A zero or positive value gives an absolute
erase block number. A negative value specifies a number of
sectors before the end of the device.
-
+
For example "2" means block number 2, "-1" means the last
block and "-2" means the penultimate block.
-
+
config MTD_REDBOOT_PARTS_UNALLOCATED
- bool " Include unallocated flash regions"
+ bool "Include unallocated flash regions"
depends on MTD_REDBOOT_PARTS
help
If you need to register each unallocated flash region as a MTD
'partition', enable this option.
config MTD_REDBOOT_PARTS_READONLY
- bool " Force read-only for RedBoot system images"
+ bool "Force read-only for RedBoot system images"
depends on MTD_REDBOOT_PARTS
help
If you need to force read-only for 'RedBoot', 'RedBoot Config' and
config MTD_CMDLINE_PARTS
bool "Command line partition table parsing"
- depends on MTD_PARTITIONS = "y"
+ depends on MTD_PARTITIONS = "y" && MTD = "y"
---help---
- Allow generic configuration of the MTD paritition tables via the kernel
+ Allow generic configuration of the MTD partition tables via the kernel
command line. Multiple flash resources are supported for hardware where
- different kinds of flash memory are available.
+ different kinds of flash memory are available.
You will still need the parsing functions to be called by the driver
- for your particular device. It won't happen automatically. The
- SA1100 map driver (CONFIG_MTD_SA1100) has an option for this, for
+ for your particular device. It won't happen automatically. The
+ SA1100 map driver (CONFIG_MTD_SA1100) has an option for this, for
example.
The format for the command line is as follows:
<mtddef> := <mtd-id>:<partdef>[,<partdef>]
<partdef> := <size>[@offset][<name>][ro]
<mtd-id> := unique id used in mapping driver/device
- <size> := standard linux memsize OR "-" to denote all
+ <size> := standard linux memsize OR "-" to denote all
remaining space
<name> := (NAME)
- Due to the way Linux handles the command line, no spaces are
- allowed in the partition definition, including mtd id's and partition
+ Due to the way Linux handles the command line, no spaces are
+ allowed in the partition definition, including mtd id's and partition
names.
Examples:
You will still need the parsing functions to be called by the driver
for your particular device. It won't happen automatically. The
- 'armflash' map driver (CONFIG_MTD_ARMFLASH) does this, for example.
+ 'armflash' map driver (CONFIG_MTD_ARM_INTEGRATOR) does this, for
+ example.
+
+config MTD_OF_PARTS
+ tristate "Flash partition map based on OF description"
+ depends on (MICROBLAZE || PPC_OF) && MTD_PARTITIONS
+ help
+ This provides a partition parsing function which derives
+ the partition map from the children of the flash node,
+ as described in Documentation/powerpc/booting-without-of.txt.
+
+config MTD_AR7_PARTS
+ tristate "TI AR7 partitioning support"
+ depends on MTD_PARTITIONS
+ ---help---
+ TI AR7 partitioning support
comment "User Modules And Translation Layers"
- depends on MTD
config MTD_CHAR
tristate "Direct char device access to MTD devices"
- depends on MTD
help
This provides a character device for each MTD device present in
the system, allowing the user to read and write directly to the
memory chips, and also use ioctl() to obtain information about
the device, or to erase parts of it.
+config HAVE_MTD_OTP
+ bool
+ help
+ Enable access to OTP regions using MTD_CHAR.
+
+config MTD_BLKDEVS
+ tristate "Common interface to block layer for MTD 'translation layers'"
+ depends on BLOCK
+ default n
+
config MTD_BLOCK
tristate "Caching block device access to MTD devices"
- depends on MTD
+ 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
config MTD_BLOCK_RO
tristate "Readonly block device access to MTD devices"
- depends on MTD_BLOCK!=y && MTD
+ 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
config FTL
tristate "FTL (Flash Translation Layer) support"
- depends on MTD
+ 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-
config NFTL
tristate "NFTL (NAND Flash Translation Layer) support"
- depends on MTD
+ 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-
config INFTL
tristate "INFTL (Inverse NAND Flash Translation Layer) support"
- depends on MTD
+ depends on BLOCK
+ select MTD_BLKDEVS
---help---
- This provides support for the Inverse NAND Flash Translation
+ 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
config RFD_FTL
tristate "Resident Flash Disk (Flash Translation Layer) support"
- depends on MTD
+ 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.
- See http://www.gensw.com/pages/prod/bios/rfd.htm for further
- information.
+ 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 MTD_OOPS
+ tristate "Log panic/oops to an MTD buffer"
+ depends on MTD
+ 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.
+
+ To use, add console=ttyMTDx to the kernel command line,
+ where x is the MTD device number to use.
source "drivers/mtd/chips/Kconfig"
source "drivers/mtd/nand/Kconfig"
-endmenu
+source "drivers/mtd/onenand/Kconfig"
+
+source "drivers/mtd/lpddr/Kconfig"
+
+source "drivers/mtd/ubi/Kconfig"
+endif # MTD