menuconfig MTD_RAW_NAND bool "Raw NAND Device Support" if MTD_RAW_NAND config SYS_NAND_SELF_INIT bool help This option, if enabled, provides more flexible and linux-like NAND initialization process. config SPL_SYS_NAND_SELF_INIT bool depends on !SPL_NAND_SIMPLE help This option, if enabled, provides more flexible and linux-like NAND initialization process, in SPL. config TPL_SYS_NAND_SELF_INIT bool depends on TPL_NAND_SUPPORT help This option, if enabled, provides more flexible and linux-like NAND initialization process, in SPL. config TPL_NAND_INIT bool config SPL_NAND_INIT bool config SYS_MAX_NAND_DEVICE int "Maximum number of NAND devices to support" default 1 config SYS_NAND_DRIVER_ECC_LAYOUT bool "Omit standard ECC layouts to save space" help Omit standard ECC layouts to save space. Select this if your driver is known to provide its own ECC layout. config SYS_NAND_USE_FLASH_BBT bool "Enable BBT (Bad Block Table) support" help Enable the BBT (Bad Block Table) usage. config SYS_NAND_NO_SUBPAGE_WRITE bool "Disable subpage write support" depends on NAND_ARASAN || NAND_DAVINCI || NAND_KIRKWOOD config DM_NAND_ATMEL bool "Support Atmel NAND controller with DM support" select SYS_NAND_SELF_INIT imply SYS_NAND_USE_FLASH_BBT help Enable this driver for NAND flash platforms using an Atmel NAND controller. config NAND_ATMEL bool "Support Atmel NAND controller" select SYS_NAND_SELF_INIT imply SYS_NAND_USE_FLASH_BBT help Enable this driver for NAND flash platforms using an Atmel NAND controller. if NAND_ATMEL config ATMEL_NAND_HWECC bool "Atmel Hardware ECC" config ATMEL_NAND_HW_PMECC bool "Atmel Programmable Multibit ECC (PMECC)" select ATMEL_NAND_HWECC help The Programmable Multibit ECC (PMECC) controller is a programmable binary BCH(Bose, Chaudhuri and Hocquenghem) encoder and decoder. config PMECC_CAP int "PMECC Correctable ECC Bits" depends on ATMEL_NAND_HW_PMECC default 2 help Correctable ECC bits, can be 2, 4, 8, 12, and 24. config PMECC_SECTOR_SIZE int "PMECC Sector Size" depends on ATMEL_NAND_HW_PMECC default 512 help Sector size, in bytes, can be 512 or 1024. config SPL_GENERATE_ATMEL_PMECC_HEADER bool "Atmel PMECC Header Generation" depends on SPL select ATMEL_NAND_HWECC select ATMEL_NAND_HW_PMECC help Generate Programmable Multibit ECC (PMECC) header for SPL image. choice prompt "NAND bus width (bits)" default SYS_NAND_DBW_8 config SYS_NAND_DBW_8 bool "NAND bus width is 8 bits" config SYS_NAND_DBW_16 bool "NAND bus width is 16 bits" endchoice endif config NAND_BRCMNAND bool "Support Broadcom NAND controller" depends on OF_CONTROL && DM && DM_MTD select SYS_NAND_SELF_INIT help Enable the driver for NAND flash on platforms using a Broadcom NAND controller. config NAND_BRCMNAND_6368 bool "Support Broadcom NAND controller on bcm6368" depends on NAND_BRCMNAND && ARCH_BMIPS help Enable support for broadcom nand driver on bcm6368. config NAND_BRCMNAND_6753 bool "Support Broadcom NAND controller on bcm6753" depends on NAND_BRCMNAND && BCM6855 help Enable support for broadcom nand driver on bcm6753. config NAND_BRCMNAND_68360 bool "Support Broadcom NAND controller on bcm68360" depends on NAND_BRCMNAND && BCM6856 help Enable support for broadcom nand driver on bcm68360. config NAND_BRCMNAND_6838 bool "Support Broadcom NAND controller on bcm6838" depends on NAND_BRCMNAND && ARCH_BMIPS && SOC_BMIPS_BCM6838 help Enable support for broadcom nand driver on bcm6838. config NAND_BRCMNAND_6858 bool "Support Broadcom NAND controller on bcm6858" depends on NAND_BRCMNAND && BCM6858 help Enable support for broadcom nand driver on bcm6858. config NAND_BRCMNAND_63158 bool "Support Broadcom NAND controller on bcm63158" depends on NAND_BRCMNAND && BCM63158 help Enable support for broadcom nand driver on bcm63158. config NAND_BRCMNAND_IPROC bool "Support Broadcom NAND controller on the iproc family" depends on NAND_BRCMNAND help Enable support for broadcom nand driver on the Broadcom iproc family such as Northstar (BCM5301x, BCM4708...) config NAND_DAVINCI bool "Support TI Davinci NAND controller" select SYS_NAND_SELF_INIT if TARGET_DA850EVM help Enable this driver for NAND flash controllers available in TI Davinci and Keystone2 platforms choice prompt "Type of ECC used on NAND" default SYS_NAND_4BIT_HW_ECC_OOBFIRST depends on NAND_DAVINCI config SYS_NAND_HW_ECC bool "Use 1-bit HW ECC" config SYS_NAND_4BIT_HW_ECC_OOBFIRST bool "Use 4-bit HW ECC with OOB at the front" config SYS_NAND_SOFT_ECC bool "Use software ECC" endchoice choice prompt "NAND page size" depends on NAND_DAVINCI default SYS_NAND_PAGE_2K config SYS_NAND_PAGE_2K bool "Page size is 2K" config SYS_NAND_PAGE_4K bool "Page size is 4K" endchoice config KEYSTONE_RBL_NAND depends on ARCH_KEYSTONE def_bool y config SPL_NAND_LOAD def_bool y depends on NAND_DAVINCI && ARCH_DAVINCI && SPL_NAND_SUPPORT config NAND_DENALI bool select SYS_NAND_SELF_INIT imply CMD_NAND config NAND_DENALI_DT bool "Support Denali NAND controller as a DT device" select NAND_DENALI select SPL_SYS_NAND_SELF_INIT depends on OF_CONTROL && DM_MTD help Enable the driver for NAND flash on platforms using a Denali NAND controller as a DT device. config NAND_FSL_ELBC bool "Support Freescale Enhanced Local Bus Controller FCM NAND driver" select TPL_SYS_NAND_SELF_INIT if TPL_NAND_SUPPORT select SPL_SYS_NAND_SELF_INIT select SYS_NAND_SELF_INIT depends on FSL_ELBC help Enable the Freescale Enhanced Local Bus Controller FCM NAND driver. config NAND_FSL_ELBC_DT bool "Support Freescale Enhanced Local Bus Controller FCM NAND driver (DT mode)" depends on NAND_FSL_ELBC config NAND_FSL_IFC bool "Support Freescale Integrated Flash Controller NAND driver" select TPL_SYS_NAND_SELF_INIT if TPL_NAND_SUPPORT select TPL_NAND_INIT if TPL && !TPL_FRAMEWORK select SPL_SYS_NAND_SELF_INIT select SYS_NAND_SELF_INIT select FSL_IFC help Enable the Freescale Integrated Flash Controller NAND driver. config NAND_KIRKWOOD bool "Support for Kirkwood NAND controller" depends on ARCH_KIRKWOOD default y config NAND_ECC_BCH bool config NAND_KMETER1 bool "Support KMETER1 NAND controller" depends on VENDOR_KM select NAND_ECC_BCH config NAND_LPC32XX_MLC bool "Support LPC32XX_MLC controller" select SYS_NAND_SELF_INIT help Enable the LPC32XX MLC NAND controller. config NAND_LPC32XX_SLC bool "Support LPC32XX_SLC controller" help Enable the LPC32XX SLC NAND controller. config NAND_OMAP_GPMC bool "Support OMAP GPMC NAND controller" depends on ARCH_OMAP2PLUS || ARCH_KEYSTONE || ARCH_K3 select SYS_NAND_SELF_INIT if ARCH_K3 select SPL_NAND_INIT if ARCH_K3 select SPL_SYS_NAND_SELF_INIT if ARCH_K3 help Enables omap_gpmc.c driver for OMAPx and AMxxxx platforms. GPMC controller is used for parallel NAND flash devices, and can do ECC calculation (not ECC error detection) for HAM1, BCH4, BCH8 and BCH16 ECC algorithms. if NAND_OMAP_GPMC config NAND_OMAP_GPMC_PREFETCH bool "Enable GPMC Prefetch" default y help On OMAP platforms that use the GPMC controller (CONFIG_NAND_OMAP_GPMC_PREFETCH), this options enables the code that uses the prefetch mode to speed up read operations. config NAND_OMAP_ELM bool "Enable ELM driver for OMAPxx and AMxx platforms." depends on !OMAP34XX help ELM controller is used for ECC error detection (not ECC calculation) of BCH4, BCH8 and BCH16 ECC algorithms. Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine, thus such SoC platforms need to depend on software library for ECC error detection. However ECC calculation on such plaforms would still be done by GPMC controller. choice prompt "ECC scheme" default NAND_OMAP_ECCSCHEME_BCH8_CODE_HW help On OMAP platforms, this CONFIG specifies NAND ECC scheme. It can take following values: OMAP_ECC_HAM1_CODE_SW 1-bit Hamming code using software lib. (for legacy devices only) OMAP_ECC_HAM1_CODE_HW 1-bit Hamming code using GPMC hardware. (for legacy devices only) OMAP_ECC_BCH4_CODE_HW_DETECTION_SW 4-bit BCH code (unsupported) OMAP_ECC_BCH4_CODE_HW 4-bit BCH code (unsupported) OMAP_ECC_BCH8_CODE_HW_DETECTION_SW 8-bit BCH code with - ecc calculation using GPMC hardware engine, - error detection using software library. - requires CONFIG_BCH to enable software BCH library (For legacy device which do not have ELM h/w engine) OMAP_ECC_BCH8_CODE_HW 8-bit BCH code with - ecc calculation using GPMC hardware engine, - error detection using ELM hardware engine. OMAP_ECC_BCH16_CODE_HW 16-bit BCH code with - ecc calculation using GPMC hardware engine, - error detection using ELM hardware engine. How to select ECC scheme on OMAP and AMxx platforms ? ----------------------------------------------------- Though higher ECC schemes have more capability to detect and correct bit-flips, but still selection of ECC scheme is dependent on following - hardware engines present in SoC. Some legacy OMAP SoC do not have ELM h/w engine thus such SoC cannot support BCHx_HW ECC schemes. - size of OOB/Spare region With higher ECC schemes, more OOB/Spare area is required to store ECC. So choice of ECC scheme is limited by NAND oobsize. In general following expression can help: NAND_OOBSIZE >= 2 + (NAND_PAGESIZE / 512) * ECC_BYTES where NAND_OOBSIZE = number of bytes available in OOB/spare area per NAND page. NAND_PAGESIZE = bytes in main-area of NAND page. ECC_BYTES = number of ECC bytes generated to protect 512 bytes of data, which is: 3 for HAM1_xx ecc schemes 7 for BCH4_xx ecc schemes 14 for BCH8_xx ecc schemes 26 for BCH16_xx ecc schemes example to check for BCH16 on 2K page NAND NAND_PAGESIZE = 2048 NAND_OOBSIZE = 64 2 + (2048 / 512) * 26 = 106 > NAND_OOBSIZE Thus BCH16 cannot be supported on 2K page NAND. However, for 4K pagesize NAND NAND_PAGESIZE = 4096 NAND_OOBSIZE = 224 ECC_BYTES = 26 2 + (4096 / 512) * 26 = 210 < NAND_OOBSIZE Thus BCH16 can be supported on 4K page NAND. config NAND_OMAP_ECCSCHEME_HAM1_CODE_SW bool "1-bit Hamming code using software lib" config NAND_OMAP_ECCSCHEME_HAM1_CODE_HW bool "1-bit Hamming code using GPMC hardware" config NAND_OMAP_ECCSCHEME_BCH8_CODE_HW_DETECTION_SW bool "8-bit BCH code with HW calculation SW error detection" config NAND_OMAP_ECCSCHEME_BCH8_CODE_HW bool "8-bit BCH code with HW calculation and error detection" config NAND_OMAP_ECCSCHEME_BCH16_CODE_HW bool "16-bit BCH code with HW calculation and error detection" endchoice config NAND_OMAP_ECCSCHEME int default 1 if NAND_OMAP_ECCSCHEME_HAM1_CODE_SW default 2 if NAND_OMAP_ECCSCHEME_HAM1_CODE_HW default 5 if NAND_OMAP_ECCSCHEME_BCH8_CODE_HW_DETECTION_SW default 6 if NAND_OMAP_ECCSCHEME_BCH8_CODE_HW default 7 if NAND_OMAP_ECCSCHEME_BCH16_CODE_HW help This must be kept in sync with the enum in include/linux/mtd/omap_gpmc.h endif config NAND_VF610_NFC bool "Support for Freescale NFC for VF610" select SYS_NAND_SELF_INIT select SYS_NAND_DRIVER_ECC_LAYOUT imply CMD_NAND help Enables support for NAND Flash Controller on some Freescale processors like the VF610, MCF54418 or Kinetis K70. The driver supports a maximum 2k page size. The driver currently does not support hardware ECC. if NAND_VF610_NFC config NAND_VF610_NFC_DT bool "Support Vybrid's vf610 NAND controller as a DT device" depends on OF_CONTROL && DM_MTD help Enable the driver for Vybrid's vf610 NAND flash on platforms using device tree. choice prompt "Hardware ECC strength" depends on NAND_VF610_NFC default SYS_NAND_VF610_NFC_45_ECC_BYTES help Select the ECC strength used in the hardware BCH ECC block. config SYS_NAND_VF610_NFC_45_ECC_BYTES bool "24-error correction (45 ECC bytes)" config SYS_NAND_VF610_NFC_60_ECC_BYTES bool "32-error correction (60 ECC bytes)" endchoice endif config NAND_PXA3XX bool "Support for NAND on PXA3xx and Armada 370/XP/38x" select SYS_NAND_SELF_INIT select DM_MTD select REGMAP select SYSCON imply CMD_NAND help This enables the driver for the NAND flash device found on PXA3xx processors (NFCv1) and also on Armada 370/XP (NFCv2). config NAND_SUNXI bool "Support for NAND on Allwinner SoCs" default ARCH_SUNXI depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || MACH_SUN8I select SYS_NAND_SELF_INIT select SYS_NAND_U_BOOT_LOCATIONS select SPL_NAND_SUPPORT select SPL_SYS_NAND_SELF_INIT imply CMD_NAND ---help--- Enable support for NAND. This option enables the standard and SPL drivers. The SPL driver only supports reading from the NAND using DMA transfers. if NAND_SUNXI config NAND_SUNXI_SPL_ECC_STRENGTH int "Allwinner NAND SPL ECC Strength" default 64 config NAND_SUNXI_SPL_ECC_SIZE int "Allwinner NAND SPL ECC Step Size" default 1024 config NAND_SUNXI_SPL_USABLE_PAGE_SIZE int "Allwinner NAND SPL Usable Page Size" default 1024 endif config NAND_ARASAN bool "Configure Arasan Nand" select SYS_NAND_SELF_INIT depends on DM_MTD imply CMD_NAND help This enables Nand driver support for Arasan nand flash controller. This uses the hardware ECC for read and write operations. config NAND_MXC bool "MXC NAND support" depends on CPU_ARM926EJS || CPU_ARM1136 || MX5 imply CMD_NAND help This enables the NAND driver for the NAND flash controller on the i.MX27 / i.MX31 / i.MX5 processors. config SYS_NAND_SIZE int "Size of NAND in kilobytes" depends on NAND_MXC && SPL_NAND_SUPPORT default 268435456 config MXC_NAND_HWECC bool "Hardware ECC support in MXC NAND" depends on NAND_MXC config NAND_MXS bool "MXS NAND support" depends on MX23 || MX28 || MX6 || MX7 || IMX8 || IMX8M select SPL_SYS_NAND_SELF_INIT select SYS_NAND_SELF_INIT imply CMD_NAND select APBH_DMA select APBH_DMA_BURST if ARCH_MX6 || ARCH_MX7 || ARCH_IMX8 || ARCH_IMX8M select APBH_DMA_BURST8 if ARCH_MX6 || ARCH_MX7 || ARCH_IMX8 || ARCH_IMX8M help This enables NAND driver for the NAND flash controller on the MXS processors. if NAND_MXS config NAND_MXS_DT bool "Support MXS NAND controller as a DT device" depends on OF_CONTROL && DM_MTD help Enable the driver for MXS NAND flash on platforms using device tree. config NAND_MXS_USE_MINIMUM_ECC bool "Use minimum ECC strength supported by the controller" default false endif config NAND_MXIC bool "Macronix raw NAND controller" select SYS_NAND_SELF_INIT help This selects the Macronix raw NAND controller driver. config NAND_ZYNQ bool "Support for Zynq Nand controller" select SPL_SYS_NAND_SELF_INIT select SYS_NAND_SELF_INIT select DM_MTD imply CMD_NAND help This enables Nand driver support for Nand flash controller found on Zynq SoC. config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS bool "Enable use of 1st stage bootloader timing for NAND" depends on NAND_ZYNQ help This flag prevent U-Boot reconfigure NAND flash controller and reuse the NAND timing from 1st stage bootloader. config NAND_OCTEONTX bool "Support for OcteonTX NAND controller" select SYS_NAND_SELF_INIT imply CMD_NAND help This enables Nand flash controller hardware found on the OcteonTX processors. config NAND_OCTEONTX_HW_ECC bool "Support Hardware ECC for OcteonTX NAND controller" depends on NAND_OCTEONTX default y help This enables Hardware BCH engine found on the OcteonTX processors to support ECC for NAND flash controller. config NAND_STM32_FMC2 bool "Support for NAND controller on STM32MP SoCs" depends on ARCH_STM32MP select SYS_NAND_SELF_INIT imply CMD_NAND help Enables support for NAND Flash chips on SoCs containing the FMC2 NAND controller. This controller is found on STM32MP SoCs. The controller supports a maximum 8k page size and supports a maximum 8-bit correction error per sector of 512 bytes. config CORTINA_NAND bool "Support for NAND controller on Cortina-Access SoCs" depends on CORTINA_PLATFORM select SYS_NAND_SELF_INIT select DM_MTD imply CMD_NAND help Enables support for NAND Flash chips on Coartina-Access SoCs platform This controller is found on Presidio/Venus SoCs. The controller supports a maximum 8k page size and supports a maximum 40-bit error correction per sector of 1024 bytes. config ROCKCHIP_NAND bool "Support for NAND controller on Rockchip SoCs" depends on ARCH_ROCKCHIP select SYS_NAND_SELF_INIT select DM_MTD imply CMD_NAND help Enables support for NAND Flash chips on Rockchip SoCs platform. This controller is found on Rockchip SoCs. There are four different versions of NAND FLASH Controllers, including: NFC v600: RK2928, RK3066, RK3188 NFC v622: RK3036, RK3128 NFC v800: RK3308, RV1108 NFC v900: PX30, RK3326 config TEGRA_NAND bool "Support for NAND controller on Tegra SoCs" depends on ARCH_TEGRA select SYS_NAND_SELF_INIT imply CMD_NAND help Enables support for NAND Flash chips on Tegra SoCs platforms. config NAND_MT7621 bool "Support for MediaTek MT7621 NAND flash controller" depends on SOC_MT7621 select SYS_NAND_SELF_INIT select SPL_SYS_NAND_SELF_INIT imply CMD_NAND help This enables NAND driver for the NAND flash controller on MediaTek MT7621 platform. The controller supports 4~12 bits correction per 512 bytes with a maximum 4KB page size. comment "Generic NAND options" config SYS_NAND_BLOCK_SIZE hex "NAND chip eraseblock size" depends on ARCH_SUNXI || SPL_NAND_SUPPORT || TPL_NAND_SUPPORT || \ MVEBU_SPL_BOOT_DEVICE_NAND depends on !NAND_MXS && !NAND_DENALI_DT && !NAND_LPC32XX_MLC && \ !NAND_FSL_IFC && !NAND_MT7621 help Number of data bytes in one eraseblock for the NAND chip on the board. This is the multiple of NAND_PAGE_SIZE and the number of pages. config SYS_NAND_ONFI_DETECTION bool "Enable detection of ONFI compliant devices during probe" help Enables detection of ONFI compliant devices during probe. And fetching device parameters flashed on device, by parsing ONFI parameter page. config SYS_NAND_PAGE_COUNT hex "NAND chip page count" depends on SPL_NAND_SUPPORT && (NAND_ATMEL || NAND_MXC || \ SPL_NAND_AM33XX_BCH || SPL_NAND_LOAD || SPL_NAND_SIMPLE || \ NAND_OMAP_GPMC) help Number of pages in the NAND chip. config SYS_NAND_PAGE_SIZE hex "NAND chip page size" depends on ARCH_SUNXI || NAND_OMAP_GPMC || NAND_LPC32XX_SLC || \ SPL_NAND_SIMPLE || (NAND_MXC && SPL_NAND_SUPPORT) || \ MVEBU_SPL_BOOT_DEVICE_NAND || \ (NAND_ATMEL && SPL_NAND_SUPPORT) || SPL_GENERATE_ATMEL_PMECC_HEADER depends on !NAND_MXS && !NAND_DENALI_DT && !NAND_LPC32XX_MLC && !NAND_MT7621 help Number of data bytes in one page for the NAND chip on the board, not including the OOB area. config SYS_NAND_OOBSIZE hex "NAND chip OOB size" depends on ARCH_SUNXI || NAND_OMAP_GPMC || NAND_LPC32XX_SLC || \ SPL_NAND_SIMPLE || (NAND_MXC && SPL_NAND_SUPPORT) || \ (NAND_ATMEL && SPL_NAND_SUPPORT) || SPL_GENERATE_ATMEL_PMECC_HEADER depends on !NAND_MXS && !NAND_DENALI_DT && !NAND_LPC32XX_MLC help Number of bytes in the Out-Of-Band area for the NAND chip on the board. # Enhance depends when converting drivers to Kconfig which use this config # option (mxc_nand, ndfc, omap_gpmc). config SYS_NAND_BUSWIDTH_16BIT bool "Use 16-bit NAND interface" depends on NAND_VF610_NFC || NAND_OMAP_GPMC || NAND_MXC || ARCH_DAVINCI help Indicates that NAND device has 16-bit wide data-bus. In absence of this config, bus-width of NAND device is assumed to be either 8-bit and later determined by reading ONFI params. Above config is useful when NAND device's bus-width information cannot be determined from on-chip ONFI params, like in following scenarios: - SPL boot does not support reading of ONFI parameters. This is done to keep SPL code foot-print small. - In current U-Boot flow using nand_init(), driver initialization happens in board_nand_init() which is called before any device probe (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are not available while configuring controller. So a static CONFIG_NAND_xx is needed to know the device's bus-width in advance. if SPL config SYS_NAND_5_ADDR_CYCLE bool "Wait 5 address cycles during NAND commands" depends on SPL_NAND_AM33XX_BCH || SPL_NAND_SIMPLE || \ (SPL_NAND_SUPPORT && NAND_ATMEL) default y help Some controllers require waiting for 5 address cycles when issuing some commands, on NAND chips larger than 128MiB. choice prompt "NAND bad block marker/indicator position in the OOB" depends on SPL_NAND_AM33XX_BCH || SPL_NAND_DENALI || SPL_NAND_SIMPLE || \ SPL_NAND_SUPPORT && (NAND_ATMEL || NAND_MXC) default HAS_NAND_LARGE_BADBLOCK_POS help In the OOB, which position contains the badblock information. config HAS_NAND_LARGE_BADBLOCK_POS bool "Set the bad block marker/indicator to the 'large' position" config HAS_NAND_SMALL_BADBLOCK_POS bool "Set the bad block marker/indicator to the 'small' position" endchoice config SYS_NAND_BAD_BLOCK_POS int default 0 if HAS_NAND_LARGE_BADBLOCK_POS default 5 if HAS_NAND_SMALL_BADBLOCK_POS config SYS_NAND_U_BOOT_LOCATIONS bool "Define U-Boot binaries locations in NAND" help Enable CONFIG_SYS_NAND_U_BOOT_OFFS though Kconfig. This option should not be enabled when compiling U-Boot for boards defining CONFIG_SYS_NAND_U_BOOT_OFFS in their include/configs/.h file. config SYS_NAND_U_BOOT_OFFS hex "Location in NAND to read U-Boot from" default 0x800000 if NAND_SUNXI depends on SYS_NAND_U_BOOT_LOCATIONS help Set the offset from the start of the nand where u-boot should be loaded from. config SYS_NAND_U_BOOT_OFFS_REDUND hex "Location in NAND to read U-Boot from" default SYS_NAND_U_BOOT_OFFS depends on SYS_NAND_U_BOOT_LOCATIONS help Set the offset from the start of the nand where the redundant u-boot should be loaded from. config SPL_NAND_AM33XX_BCH bool "Enables SPL-NAND driver which supports ELM based" depends on SPL_NAND_SUPPORT && NAND_OMAP_GPMC && !OMAP34XX default y help Hardware ECC correction. This is useful for platforms which have ELM hardware engine and use NAND boot mode. Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine, so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling SPL-NAND driver with software ECC correction support. config SPL_NAND_DENALI bool "Support Denali NAND controller for SPL" depends on SPL_NAND_SUPPORT help This is a small implementation of the Denali NAND controller for use on SPL. config NAND_DENALI_SPARE_AREA_SKIP_BYTES int "Number of bytes skipped in OOB area" depends on SPL_NAND_DENALI range 0 63 help This option specifies the number of bytes to skip from the beginning of OOB area before last ECC sector data starts. This is potentially used to preserve the bad block marker in the OOB area. config SPL_NAND_SIMPLE bool "Use simple SPL NAND driver" depends on !SPL_NAND_AM33XX_BCH && SPL_NAND_SUPPORT help Support for NAND boot using simple NAND drivers that expose the cmd_ctrl() interface. config SYS_NAND_HW_ECC_OOBFIRST bool "In SPL, read the OOB first and then the data from NAND" depends on SPL_NAND_SIMPLE endif endif # if NAND