# 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 . 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 accidentally due to device wear or something else. config MTD_NAND_ECC_SMC bool "NAND ECC Smart Media byte order" depends on MTD_NAND default n help Software ECC according to the Smart Media Specification. The original Linux implementation had byte 0 and 1 swapped. 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_AMS_DELTA tristate "NAND Flash device on Amstrad E3" depends on MACH_AMS_DELTA && MTD_NAND help Support for NAND flash on Amstrad E3 (Delta). config MTD_NAND_TOTO tristate "NAND Flash device on TOTO board" depends on ARCH_OMAP && MTD_NAND && 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 && MTD_NAND 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) && 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 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 && MTD_NAND && 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 && MTD_NAND 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. 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_NDFC tristate "NDFC NanD Flash Controller" depends on MTD_NAND && 44x select MTD_NAND_ECC_SMC help NDFC Nand Flash Controllers are integrated in EP44x 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 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_CAFE tristate "NAND support for OLPC CAFÉ chip" depends on PCI help Use NAND flash attached to the CAFÉ chip designed for the $100 laptop. config MTD_NAND_CS553X tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)" depends on MTD_NAND && 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 MTD_NAND && ARCH_AT91 help Enables support for NAND Flash / Smart Media Card interface on Atmel AT91 processors. config MTD_NAND_NANDSIM tristate "Support for NAND Flash Simulator" depends on MTD_NAND && MTD_PARTITIONS help The simulator may simulate various NAND flash chips for the MTD nand layer. endmenu