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# drivers/mtd/nand/Kconfig
# $Id: Kconfig,v 1.35 2005/11/07 11:14:30 gleixner Exp $

menuconfig MTD_NAND
        tristate "NAND Device Support"
        depends on MTD
        select MTD_NAND_IDS
        help
          This enables support for accessing all type of NAND flash
          devices. For further information see
          <http://www.linux-mtd.infradead.org/doc/nand.html>.

if MTD_NAND

config MTD_NAND_VERIFY_WRITE
        bool "Verify NAND page writes"
        help
          This adds an extra check when data is written to the flash. The
          NAND flash device internally checks only bits transitioning
          from 1 to 0. There is a rare possibility that even though the
          device thinks the write was successful, a bit could have been
          flipped accidentally due to device wear or something else.

config MTD_NAND_ECC_SMC
        bool "NAND ECC Smart Media byte order"
        default n
        help
          Software ECC according to the Smart Media Specification.
          The original Linux implementation had byte 0 and 1 swapped.

config MTD_NAND_MUSEUM_IDS
        bool "Enable chip ids for obsolete ancient NAND devices"
        depends on MTD_NAND
        default n
        help
          Enable this option only when your board has first generation
          NAND chips (page size 256 byte, erase size 4-8KiB). The IDs
          of these chips were reused by later, larger chips.

config MTD_NAND_AUTCPU12
        tristate "SmartMediaCard on autronix autcpu12 board"
        depends on ARCH_AUTCPU12
        help
          This enables the driver for the autronix autcpu12 board to
          access the SmartMediaCard.

config MTD_NAND_EDB7312
        tristate "Support for Cirrus Logic EBD7312 evaluation board"
        depends on ARCH_EDB7312
        help
          This enables the driver for the Cirrus Logic EBD7312 evaluation
          board to access the onboard NAND Flash.

config MTD_NAND_H1900
        tristate "iPAQ H1900 flash"
        depends on ARCH_PXA && MTD_PARTITIONS
        help
          This enables the driver for the iPAQ h1900 flash.

config MTD_NAND_SPIA
        tristate "NAND Flash device on SPIA board"
        depends on ARCH_P720T
        help
          If you had to ask, you don't have one. Say 'N'.

config MTD_NAND_AMS_DELTA
        tristate "NAND Flash device on Amstrad E3"
        depends on MACH_AMS_DELTA
        help
          Support for NAND flash on Amstrad E3 (Delta).

config MTD_NAND_TOTO
        tristate "NAND Flash device on TOTO board"
        depends on ARCH_OMAP && BROKEN
        help
          Support for NAND flash on Texas Instruments Toto platform.

config MTD_NAND_TS7250
        tristate "NAND Flash device on TS-7250 board"
        depends on MACH_TS72XX
        help
          Support for NAND flash on Technologic Systems TS-7250 platform.

config MTD_NAND_IDS
        tristate

config MTD_NAND_AU1550
        tristate "Au1550/1200 NAND support"
        depends on SOC_AU1200 || SOC_AU1550
        help
          This enables the driver for the NAND flash controller on the
          AMD/Alchemy 1550 SOC.

config MTD_NAND_BF5XX
        tristate "Blackfin on-chip NAND Flash Controller driver"
        depends on BF54x && MTD_NAND
        help
          This enables the Blackfin on-chip NAND flash controller

          No board specific support is done by this driver, each board
          must advertise a platform_device for the driver to attach.

          This driver can also be built as a module. If so, the module
          will be called bf5xx-nand.

config MTD_NAND_BF5XX_HWECC
        bool "BF5XX NAND Hardware ECC"
        depends on MTD_NAND_BF5XX
        help
          Enable the use of the BF5XX's internal ECC generator when
          using NAND.

config MTD_NAND_RTC_FROM4
        tristate "Renesas Flash ROM 4-slot interface board (FROM_BOARD4)"
        depends on SH_SOLUTION_ENGINE
        select REED_SOLOMON
        select REED_SOLOMON_DEC8
        select BITREVERSE
        help
          This enables the driver for the Renesas Technology AG-AND
          flash interface board (FROM_BOARD4)

config MTD_NAND_PPCHAMELEONEVB
        tristate "NAND Flash device on PPChameleonEVB board"
        depends on PPCHAMELEONEVB && BROKEN
        help
          This enables the NAND flash driver on the PPChameleon EVB Board.

config MTD_NAND_S3C2410
        tristate "NAND Flash support for S3C2410/S3C2440 SoC"
        depends on ARCH_S3C2410
        help
          This enables the NAND flash controller on the S3C2410 and S3C2440
          SoCs

          No board specific support is done by this driver, each board
          must advertise a platform_device for the driver to attach.

config MTD_NAND_S3C2410_DEBUG
        bool "S3C2410 NAND driver debug"
        depends on MTD_NAND_S3C2410
        help
          Enable debugging of the S3C2410 NAND driver

config MTD_NAND_S3C2410_HWECC
        bool "S3C2410 NAND Hardware ECC"
        depends on MTD_NAND_S3C2410
        help
          Enable the use of the S3C2410's internal ECC generator when
          using NAND. Early versions of the chip have had problems with
          incorrect ECC generation, and if using these, the default of
          software ECC is preferable.

config MTD_NAND_NDFC
        tristate "NDFC NanD Flash Controller"
        depends on 4xx && !PPC_MERGE
        select MTD_NAND_ECC_SMC
        help
         NDFC Nand Flash Controllers are integrated in IBM/AMCC's 4xx SoCs

config MTD_NAND_S3C2410_CLKSTOP
        bool "S3C2410 NAND IDLE clock stop"
        depends on MTD_NAND_S3C2410
        default n
        help
          Stop the clock to the NAND controller when there is no chip
          selected to save power. This will mean there is a small delay
          when the is NAND chip selected or released, but will save
          approximately 5mA of power when there is nothing happening.

config MTD_NAND_DISKONCHIP
        tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)"
        depends on EXPERIMENTAL
        select REED_SOLOMON
        select REED_SOLOMON_DEC16
        help
          This is a reimplementation of M-Systems DiskOnChip 2000,
          Millennium and Millennium Plus as a standard NAND device driver,
          as opposed to the earlier self-contained MTD device drivers.
          This should enable, among other things, proper JFFS2 operation on
          these devices.

config MTD_NAND_DISKONCHIP_PROBE_ADVANCED
        bool "Advanced detection options for DiskOnChip"
        depends on MTD_NAND_DISKONCHIP
        help
          This option allows you to specify nonstandard address at which to
          probe for a DiskOnChip, or to change the detection options.  You
          are unlikely to need any of this unless you are using LinuxBIOS.
          Say 'N'.

config MTD_NAND_DISKONCHIP_PROBE_ADDRESS
        hex "Physical address of DiskOnChip" if MTD_NAND_DISKONCHIP_PROBE_ADVANCED
        depends on MTD_NAND_DISKONCHIP
        default "0"
        ---help---
        By default, the probe for DiskOnChip devices will look for a
        DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
        This option allows you to specify a single address at which to probe
        for the device, which is useful if you have other devices in that
        range which get upset when they are probed.

        (Note that on PowerPC, the normal probe will only check at
        0xE4000000.)

        Normally, you should leave this set to zero, to allow the probe at
        the normal addresses.

config MTD_NAND_DISKONCHIP_PROBE_HIGH
        bool "Probe high addresses"
        depends on MTD_NAND_DISKONCHIP_PROBE_ADVANCED
        help
          By default, the probe for DiskOnChip devices will look for a
          DiskOnChip at every multiple of 0x2000 between 0xC8000 and 0xEE000.
          This option changes to make it probe between 0xFFFC8000 and
          0xFFFEE000.  Unless you are using LinuxBIOS, this is unlikely to be
          useful to you.  Say 'N'.

config MTD_NAND_DISKONCHIP_BBTWRITE
        bool "Allow BBT writes on DiskOnChip Millennium and 2000TSOP"
        depends on MTD_NAND_DISKONCHIP
        help
          On DiskOnChip devices shipped with the INFTL filesystem (Millennium
          and 2000 TSOP/Alon), Linux reserves some space at the end of the
          device for the Bad Block Table (BBT).  If you have existing INFTL
          data on your device (created by non-Linux tools such as M-Systems'
          DOS drivers), your data might overlap the area Linux wants to use for
          the BBT.  If this is a concern for you, leave this option disabled and
          Linux will not write BBT data into this area.
          The downside of leaving this option disabled is that if bad blocks
          are detected by Linux, they will not be recorded in the BBT, which
          could cause future problems.
          Once you enable this option, new filesystems (INFTL or others, created
          in Linux or other operating systems) will not use the reserved area.
          The only reason not to enable this option is to prevent damage to
          preexisting filesystems.
          Even if you leave this disabled, you can enable BBT writes at module
          load time (assuming you build diskonchip as a module) with the module
          parameter "inftl_bbt_write=1".

config MTD_NAND_SHARPSL
        tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
        depends on ARCH_PXA

config MTD_NAND_BASLER_EXCITE
        tristate  "Support for NAND Flash on Basler eXcite"
        depends on BASLER_EXCITE
        help
          This enables the driver for the NAND flash device found on the
          Basler eXcite Smart Camera. If built as a module, the driver
          will be named "excite_nandflash.ko".

config MTD_NAND_CAFE
        tristate "NAND support for OLPC CAFÉ chip"
        depends on PCI
        select REED_SOLOMON
        select REED_SOLOMON_DEC16
        help
          Use NAND flash attached to the CAFÉ chip designed for the OLPC
          laptop.

config MTD_NAND_CS553X
        tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)"
        depends on X86_32 && (X86_PC || X86_GENERICARCH)
        help
          The CS553x companion chips for the AMD Geode processor
          include NAND flash controllers with built-in hardware ECC
          capabilities; enabling this option will allow you to use
          these. The driver will check the MSRs to verify that the
          controller is enabled for NAND, and currently requires that
          the controller be in MMIO mode.

          If you say "m", the module will be called "cs553x_nand.ko".

config MTD_NAND_AT91
        bool "Support for NAND Flash / SmartMedia on AT91"
        depends on ARCH_AT91
        help
          Enables support for NAND Flash / Smart Media Card interface
          on Atmel AT91 processors.

config MTD_NAND_CM_X270
        tristate "Support for NAND Flash on CM-X270 modules"
        depends on MTD_NAND && MACH_ARMCORE


config MTD_NAND_NANDSIM
        tristate "Support for NAND Flash Simulator"
        depends on MTD_PARTITIONS
        help
          The simulator may simulate various NAND flash chips for the
          MTD nand layer.

config MTD_NAND_PLATFORM
        tristate "Support for generic platform NAND driver"
        depends on MTD_NAND
        help
          This implements a generic NAND driver for on-SOC platform
          devices. You will need to provide platform-specific functions
          via platform_data.

config MTD_ALAUDA
        tristate "MTD driver for Olympus MAUSB-10 and Fujifilm DPC-R1"
        depends on MTD_NAND && USB
        help
          These two (and possibly other) Alauda-based cardreaders for
          SmartMedia and xD allow raw flash access.

endif # MTD_NAND