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# drivers/mtd/nand/Kconfig
# $Id: Kconfig,v 1.35 2005/11/07 11:14:30 gleixner Exp $
menu "NAND Flash Device Drivers"
depends on MTD!=n
config 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/tech/nand.html>.
config MTD_NAND_VERIFY_WRITE
bool "Verify NAND page writes"
depends on MTD_NAND
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 accidentaly due to device wear or something else.
config MTD_NAND_AUTCPU12
tristate "SmartMediaCard on autronix autcpu12 board"
depends on MTD_NAND && 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 MTD_NAND && 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 MTD_NAND && 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 && MTD_NAND
help
If you had to ask, you don't have one. Say 'N'.
config MTD_NAND_TOTO
tristate "NAND Flash device on TOTO board"
depends on ARCH_OMAP && MTD_NAND
help
Support for NAND flash on Texas Instruments Toto platform.
config MTD_NAND_IDS
tristate
config MTD_NAND_AU1550
tristate "Au1550/1200 NAND support"
depends on (SOC_AU1200 || SOC_AU1550) && MTD_NAND
help
This enables the driver for the NAND flash controller on the
AMD/Alchemy 1550 SOC.
config MTD_NAND_RTC_FROM4
tristate "Renesas Flash ROM 4-slot interface board (FROM_BOARD4)"
depends on MTD_NAND && SH_SOLUTION_ENGINE
select REED_SOLOMON
select REED_SOLOMON_DEC8
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 && MTD_NAND
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 && MTD_NAND
help
This enables the NAND flash controller on the S3C2410 and S3C2440
SoCs
No board specfic 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.
If you lay down a device with the hardware ECC, then you will
currently not be able to switch to software, as there is no
implementation for ECC method used by the S3C2410
config MTD_NAND_DISKONCHIP
tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation) (EXPERIMENTAL)"
depends on MTD_NAND && 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 MTD_NAND && ARCH_PXA
config MTD_NAND_NANDSIM
tristate "Support for NAND Flash Simulator"
depends on MTD_NAND && MTD_PARTITIONS
help
The simulator may simulate verious NAND flash chips for the
MTD nand layer.
endmenu
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