diff options
Diffstat (limited to 'drivers/mtd/nand/raw/Kconfig')
| -rw-r--r-- | drivers/mtd/nand/raw/Kconfig | 393 |
1 files changed, 190 insertions, 203 deletions
diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig index e604625e2dfa..0500c42f31cb 100644 --- a/drivers/mtd/nand/raw/Kconfig +++ b/drivers/mtd/nand/raw/Kconfig @@ -1,34 +1,29 @@ -config MTD_NAND_ECC +config MTD_NAND_ECC_SW_HAMMING tristate -config MTD_NAND_ECC_SMC +config MTD_NAND_ECC_SW_HAMMING_SMC bool "NAND ECC Smart Media byte order" - depends on MTD_NAND_ECC + depends on MTD_NAND_ECC_SW_HAMMING default n help Software ECC according to the Smart Media Specification. The original Linux implementation had byte 0 and 1 swapped. - -menuconfig MTD_NAND +menuconfig MTD_RAW_NAND tristate "Raw/Parallel NAND Device Support" depends on MTD - select MTD_NAND_ECC + select MTD_NAND_CORE + select MTD_NAND_ECC_SW_HAMMING help This enables support for accessing all type of raw/parallel NAND flash devices. For further information see <http://www.linux-mtd.infradead.org/doc/nand.html>. -if MTD_NAND +if MTD_RAW_NAND -config MTD_NAND_BCH - tristate - select BCH - depends on MTD_NAND_ECC_BCH - default MTD_NAND - -config MTD_NAND_ECC_BCH +config MTD_NAND_ECC_SW_BCH bool "Support software BCH ECC" + select BCH default n help This enables support for software BCH error correction. Binary BCH @@ -36,15 +31,13 @@ config MTD_NAND_ECC_BCH ECC codes. They are used with NAND devices requiring more than 1 bit of error correction. -config MTD_SM_COMMON - tristate - default n +comment "Raw/parallel NAND flash controllers" config MTD_NAND_DENALI tristate config MTD_NAND_DENALI_PCI - tristate "Support Denali NAND controller on Intel Moorestown" + tristate "Denali NAND controller on Intel Moorestown" select MTD_NAND_DENALI depends on PCI help @@ -52,31 +45,22 @@ config MTD_NAND_DENALI_PCI Denali NAND controller core. config MTD_NAND_DENALI_DT - tristate "Support Denali NAND controller as a DT device" + tristate "Denali NAND controller as a DT device" select MTD_NAND_DENALI depends on HAS_DMA && HAVE_CLK && OF help Enable the driver for NAND flash on platforms using a Denali NAND controller as a DT device. -config MTD_NAND_GPIO - tristate "GPIO assisted NAND Flash driver" - depends on GPIOLIB || COMPILE_TEST - depends on HAS_IOMEM - help - This enables a NAND flash driver where control signals are - connected to GPIO pins, and commands and data are communicated - via a memory mapped interface. - config MTD_NAND_AMS_DELTA - tristate "NAND Flash device on Amstrad E3" + tristate "Amstrad E3 NAND controller" depends on MACH_AMS_DELTA || COMPILE_TEST default y help Support for NAND flash on Amstrad E3 (Delta). config MTD_NAND_OMAP2 - tristate "NAND Flash device on OMAP2, OMAP3, OMAP4 and Keystone" + tristate "OMAP2, OMAP3, OMAP4 and Keystone NAND controller" depends on ARCH_OMAP2PLUS || ARCH_KEYSTONE || COMPILE_TEST depends on HAS_IOMEM help @@ -98,18 +82,6 @@ config MTD_NAND_OMAP_BCH config MTD_NAND_OMAP_BCH_BUILD def_tristate MTD_NAND_OMAP2 && MTD_NAND_OMAP_BCH -config MTD_NAND_RICOH - tristate "Ricoh xD card reader" - default n - depends on PCI - select MTD_SM_COMMON - help - Enable support for Ricoh R5C852 xD card reader - You also need to enable ether - NAND SSFDC (SmartMedia) read only translation layer' or new - expermental, readwrite - 'SmartMedia/xD new translation layer' - config MTD_NAND_AU1550 tristate "Au1550/1200 NAND support" depends on MIPS_ALCHEMY @@ -117,8 +89,15 @@ config MTD_NAND_AU1550 This enables the driver for the NAND flash controller on the AMD/Alchemy 1550 SOC. +config MTD_NAND_NDFC + tristate "IBM/MCC 4xx NAND controller" + depends on 4xx + select MTD_NAND_ECC_SW_HAMMING_SMC + help + NDFC Nand Flash Controllers are integrated in IBM/AMCC's 4xx SoCs + config MTD_NAND_S3C2410 - tristate "NAND Flash support for Samsung S3C SoCs" + tristate "Samsung S3C NAND controller" depends on ARCH_S3C24XX || ARCH_S3C64XX help This enables the NAND flash controller on the S3C24xx and S3C64xx @@ -128,18 +107,11 @@ config MTD_NAND_S3C2410 must advertise a platform_device for the driver to attach. config MTD_NAND_S3C2410_DEBUG - bool "Samsung S3C NAND driver debug" + bool "Samsung S3C NAND controller debug" depends on MTD_NAND_S3C2410 help Enable debugging of the S3C NAND driver -config MTD_NAND_NDFC - tristate "NDFC NanD Flash Controller" - depends on 4xx - select MTD_NAND_ECC_SMC - help - NDFC Nand Flash Controllers are integrated in IBM/AMCC's 4xx SoCs - config MTD_NAND_S3C2410_CLKSTOP bool "Samsung S3C NAND IDLE clock stop" depends on MTD_NAND_S3C2410 @@ -151,89 +123,19 @@ config MTD_NAND_S3C2410_CLKSTOP approximately 5mA of power when there is nothing happening. config MTD_NAND_TANGO - tristate "NAND Flash support for Tango chips" + tristate "Tango NAND controller" depends on ARCH_TANGO || COMPILE_TEST depends on HAS_IOMEM help Enables the NAND Flash controller on Tango chips. -config MTD_NAND_DISKONCHIP - tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation)" - depends on HAS_IOMEM - 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)" + tristate "Sharp SL Series (C7xx + others) NAND controller" depends on ARCH_PXA || COMPILE_TEST depends on HAS_IOMEM config MTD_NAND_CAFE - tristate "NAND support for OLPC CAFÉ chip" + tristate "OLPC CAFÉ NAND controller" depends on PCI select REED_SOLOMON select REED_SOLOMON_DEC16 @@ -242,7 +144,7 @@ config MTD_NAND_CAFE laptop. config MTD_NAND_CS553X - tristate "NAND support for CS5535/CS5536 (AMD Geode companion chip)" + tristate "CS5535/CS5536 (AMD Geode companion) NAND controller" depends on X86_32 depends on !UML && HAS_IOMEM help @@ -256,7 +158,7 @@ config MTD_NAND_CS553X If you say "m", the module will be called cs553x_nand. config MTD_NAND_ATMEL - tristate "Support for NAND Flash / SmartMedia on AT91" + tristate "Atmel AT91 NAND Flash/SmartMedia NAND controller" depends on ARCH_AT91 || COMPILE_TEST depends on HAS_IOMEM select GENERIC_ALLOCATOR @@ -265,8 +167,17 @@ config MTD_NAND_ATMEL Enables support for NAND Flash / Smart Media Card interface on Atmel AT91 processors. +config MTD_NAND_ORION + tristate "Marvell Orion NAND controller" + depends on PLAT_ORION + help + This enables the NAND flash controller on Orion machines. + + No board specific support is done by this driver, each board + must advertise a platform_device for the driver to attach. + config MTD_NAND_MARVELL - tristate "NAND controller support on Marvell boards" + tristate "Marvell EBU NAND controller" depends on PXA3xx || ARCH_MMP || PLAT_ORION || ARCH_MVEBU || \ COMPILE_TEST depends on HAS_IOMEM @@ -278,7 +189,7 @@ config MTD_NAND_MARVELL - 64-bit Aramda platforms (7k, 8k) (NFCv2) config MTD_NAND_SLC_LPC32XX - tristate "NXP LPC32xx SLC Controller" + tristate "NXP LPC32xx SLC NAND controller" depends on ARCH_LPC32XX || COMPILE_TEST depends on HAS_IOMEM help @@ -290,7 +201,7 @@ config MTD_NAND_SLC_LPC32XX by the SLC NAND controller. config MTD_NAND_MLC_LPC32XX - tristate "NXP LPC32xx MLC Controller" + tristate "NXP LPC32xx MLC NAND controller" depends on ARCH_LPC32XX || COMPILE_TEST depends on HAS_IOMEM help @@ -302,38 +213,23 @@ config MTD_NAND_MLC_LPC32XX by the MLC NAND controller. config MTD_NAND_CM_X270 - tristate "Support for NAND Flash on CM-X270 modules" + tristate "CM-X270 modules NAND controller" depends on MACH_ARMCORE config MTD_NAND_PASEMI - tristate "NAND support for PA Semi PWRficient" + tristate "PA Semi PWRficient NAND controller" depends on PPC_PASEMI help Enables support for NAND Flash interface on PA Semi PWRficient based boards config MTD_NAND_TMIO - tristate "NAND Flash device on Toshiba Mobile IO Controller" + tristate "Toshiba Mobile IO NAND controller" depends on MFD_TMIO help Support for NAND flash connected to a Toshiba Mobile IO Controller in some PDAs, including the Sharp SL6000x. -config MTD_NAND_NANDSIM - tristate "Support for NAND Flash Simulator" - help - The simulator may simulate various NAND flash chips for the - MTD nand layer. - -config MTD_NAND_GPMI_NAND - tristate "GPMI NAND Flash Controller driver" - depends on MXS_DMA - help - Enables NAND Flash support for IMX23, IMX28 or IMX6. - The GPMI controller is very powerful, with the help of BCH - module, it can do the hardware ECC. The GPMI supports several - NAND flashs at the same time. - config MTD_NAND_BRCMNAND tristate "Broadcom STB NAND controller" depends on ARM || ARM64 || MIPS || COMPILE_TEST @@ -344,7 +240,7 @@ config MTD_NAND_BRCMNAND BCM3xxx, BCM63xxx, iProc/Cygnus and more. config MTD_NAND_BCM47XXNFLASH - tristate "Support for NAND flash on BCM4706 BCMA bus" + tristate "BCM4706 BCMA NAND controller" depends on BCMA_NFLASH depends on BCMA help @@ -352,32 +248,31 @@ config MTD_NAND_BCM47XXNFLASH registered by bcma as platform devices. This enables driver for NAND flash memories. For now only BCM4706 is supported. -config MTD_NAND_PLATFORM - tristate "Support for generic platform NAND driver" +config MTD_NAND_OXNAS + tristate "Oxford Semiconductor NAND controller" + depends on ARCH_OXNAS || COMPILE_TEST depends on HAS_IOMEM help - This implements a generic NAND driver for on-SOC platform - devices. You will need to provide platform-specific functions - via platform_data. + This enables the NAND flash controller on Oxford Semiconductor SoCs. -config MTD_NAND_ORION - tristate "NAND Flash support for Marvell Orion SoC" - depends on PLAT_ORION +config MTD_NAND_MPC5121_NFC + tristate "MPC5121 NAND controller" + depends on PPC_MPC512x help - This enables the NAND flash controller on Orion machines. - - No board specific support is done by this driver, each board - must advertise a platform_device for the driver to attach. + This enables the driver for the NAND flash controller on the + MPC5121 SoC. -config MTD_NAND_OXNAS - tristate "NAND Flash support for Oxford Semiconductor SoC" - depends on ARCH_OXNAS || COMPILE_TEST - depends on HAS_IOMEM +config MTD_NAND_GPMI_NAND + tristate "Freescale GPMI NAND controller" + depends on MXS_DMA help - This enables the NAND flash controller on Oxford Semiconductor SoCs. + Enables NAND Flash support for IMX23, IMX28 or IMX6. + The GPMI controller is very powerful, with the help of BCH + module, it can do the hardware ECC. The GPMI supports several + NAND flashs at the same time. config MTD_NAND_FSL_ELBC - tristate "NAND support for Freescale eLBC controllers" + tristate "Freescale eLBC NAND controller" depends on FSL_SOC select FSL_LBC help @@ -387,7 +282,7 @@ config MTD_NAND_FSL_ELBC external NAND devices. config MTD_NAND_FSL_IFC - tristate "NAND support for Freescale IFC controller" + tristate "Freescale IFC NAND controller" depends on FSL_SOC || ARCH_LAYERSCAPE || SOC_LS1021A || COMPILE_TEST depends on HAS_IOMEM select FSL_IFC @@ -399,22 +294,15 @@ config MTD_NAND_FSL_IFC external NAND devices. config MTD_NAND_FSL_UPM - tristate "Support for NAND on Freescale UPM" + tristate "Freescale UPM NAND controller" depends on PPC_83xx || PPC_85xx select FSL_LBC help Enables support for NAND Flash chips wired onto Freescale PowerPC processor localbus with User-Programmable Machine support. -config MTD_NAND_MPC5121_NFC - tristate "MPC5121 built-in NAND Flash Controller support" - depends on PPC_MPC512x - help - This enables the driver for the NAND flash controller on the - MPC5121 SoC. - config MTD_NAND_VF610_NFC - tristate "Support for Freescale NFC for VF610/MPC5125" + tristate "Freescale VF610/MPC5125 NAND controller" depends on (SOC_VF610 || COMPILE_TEST) depends on HAS_IOMEM help @@ -426,7 +314,7 @@ config MTD_NAND_VF610_NFC device tree. config MTD_NAND_MXC - tristate "MXC NAND support" + tristate "Freescale MXC NAND controller" depends on ARCH_MXC || COMPILE_TEST depends on HAS_IOMEM help @@ -434,7 +322,7 @@ config MTD_NAND_MXC MXC processors. config MTD_NAND_SH_FLCTL - tristate "Support for NAND on Renesas SuperH FLCTL" + tristate "Renesas SuperH FLCTL NAND controller" depends on SUPERH || COMPILE_TEST depends on HAS_IOMEM help @@ -442,7 +330,7 @@ config MTD_NAND_SH_FLCTL for NAND Flash using FLCTL. config MTD_NAND_DAVINCI - tristate "Support NAND on DaVinci/Keystone SoC" + tristate "DaVinci/Keystone NAND controller" depends on ARCH_DAVINCI || (ARCH_KEYSTONE && TI_AEMIF) || COMPILE_TEST depends on HAS_IOMEM help @@ -450,42 +338,30 @@ config MTD_NAND_DAVINCI DaVinci/Keystone processors. config MTD_NAND_TXX9NDFMC - tristate "NAND Flash support for TXx9 SoC" + tristate "TXx9 NAND controller" depends on SOC_TX4938 || SOC_TX4939 || COMPILE_TEST depends on HAS_IOMEM help This enables the NAND flash controller on the TXx9 SoCs. config MTD_NAND_SOCRATES - tristate "Support for NAND on Socrates board" + tristate "Socrates NAND controller" depends on SOCRATES help Enables support for NAND Flash chips wired onto Socrates board. config MTD_NAND_NUC900 - tristate "Support for NAND on Nuvoton NUC9xx/w90p910 evaluation boards." + tristate "Nuvoton NUC9xx/w90p910 NAND controller" depends on ARCH_W90X900 || COMPILE_TEST depends on HAS_IOMEM help This enables the driver for the NAND Flash on evaluation board based on w90p910 / NUC9xx. -config MTD_NAND_JZ4740 - tristate "Support for JZ4740 SoC NAND controller" - depends on MACH_JZ4740 || COMPILE_TEST - depends on HAS_IOMEM - help - Enables support for NAND Flash on JZ4740 SoC based boards. - -config MTD_NAND_JZ4780 - tristate "Support for NAND on JZ4780 SoC" - depends on JZ4780_NEMC - help - Enables support for NAND Flash connected to the NEMC on JZ4780 SoC - based boards, using the BCH controller for hardware error correction. +source "drivers/mtd/nand/raw/ingenic/Kconfig" config MTD_NAND_FSMC - tristate "Support for NAND on ST Micros FSMC" + tristate "ST Micros FSMC NAND controller" depends on OF && HAS_IOMEM depends on PLAT_SPEAR || ARCH_NOMADIK || ARCH_U8500 || MACH_U300 || \ COMPILE_TEST @@ -494,28 +370,28 @@ config MTD_NAND_FSMC Flexible Static Memory Controller (FSMC) config MTD_NAND_XWAY - bool "Support for NAND on Lantiq XWAY SoC" + bool "Lantiq XWAY NAND controller" depends on LANTIQ && SOC_TYPE_XWAY help Enables support for NAND Flash chips on Lantiq XWAY SoCs. NAND is attached to the External Bus Unit (EBU). config MTD_NAND_SUNXI - tristate "Support for NAND on Allwinner SoCs" + tristate "Allwinner NAND controller" depends on ARCH_SUNXI || COMPILE_TEST depends on HAS_IOMEM help Enables support for NAND Flash chips on Allwinner SoCs. config MTD_NAND_HISI504 - tristate "Support for NAND controller on Hisilicon SoC Hip04" + tristate "Hisilicon Hip04 NAND controller" depends on ARCH_HISI || COMPILE_TEST depends on HAS_IOMEM help Enables support for NAND controller on Hisilicon SoC Hip04. config MTD_NAND_QCOM - tristate "Support for NAND on QCOM SoCs" + tristate "QCOM NAND controller" depends on ARCH_QCOM || COMPILE_TEST depends on HAS_IOMEM help @@ -523,7 +399,7 @@ config MTD_NAND_QCOM controller. This controller is found on IPQ806x SoC. config MTD_NAND_MTK - tristate "Support for NAND controller on MTK SoCs" + tristate "MTK NAND controller" depends on ARCH_MEDIATEK || COMPILE_TEST depends on HAS_IOMEM help @@ -531,7 +407,7 @@ config MTD_NAND_MTK This controller is found on mt27xx, mt81xx, mt65xx SoCs. config MTD_NAND_TEGRA - tristate "Support for NAND controller on NVIDIA Tegra" + tristate "NVIDIA Tegra NAND controller" depends on ARCH_TEGRA || COMPILE_TEST depends on HAS_IOMEM help @@ -558,4 +434,115 @@ config MTD_NAND_MESON Enables support for NAND controller on Amlogic's Meson SoCs. This controller is found on Meson SoCs. -endif # MTD_NAND +config MTD_NAND_GPIO + tristate "GPIO assisted NAND controller" + depends on GPIOLIB || COMPILE_TEST + depends on HAS_IOMEM + help + This enables a NAND flash driver where control signals are + connected to GPIO pins, and commands and data are communicated + via a memory mapped interface. + +config MTD_NAND_PLATFORM + tristate "Generic NAND controller" + depends on HAS_IOMEM + help + This implements a generic NAND driver for on-SOC platform + devices. You will need to provide platform-specific functions + via platform_data. + +comment "Misc" + +config MTD_SM_COMMON + tristate + default n + +config MTD_NAND_NANDSIM + tristate "Support for NAND Flash Simulator" + help + The simulator may simulate various NAND flash chips for the + MTD nand layer. + +config MTD_NAND_RICOH + tristate "Ricoh xD card reader" + default n + depends on PCI + select MTD_SM_COMMON + help + Enable support for Ricoh R5C852 xD card reader + You also need to enable ether + NAND SSFDC (SmartMedia) read only translation layer' or new + expermental, readwrite + 'SmartMedia/xD new translation layer' + +config MTD_NAND_DISKONCHIP + tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation)" + depends on HAS_IOMEM + 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". + +endif # MTD_RAW_NAND |