menuconfig NAND bool "Raw NAND Device Support" if NAND config SYS_NAND_SELF_INIT bool help This option, if enabled, provides more flexible and linux-like NAND initialization process. config NAND_ATMEL bool "Support Atmel NAND controller" imply SYS_NAND_USE_FLASH_BBT help Enable this driver for NAND flash platforms using an Atmel NAND controller. config NAND_DAVINCI bool "Support TI Davinci NAND controller" help Enable this driver for NAND flash controllers available in TI Davinci and Keystone2 platforms 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 depends on OF_CONTROL && DM help Enable the driver for NAND flash on platforms using a Denali NAND controller as a DT device. config NAND_DENALI_SPARE_AREA_SKIP_BYTES int "Number of bytes skipped in OOB area" depends on 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 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 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. config NAND_OMAP_GPMC_PREFETCH bool "Enable GPMC Prefetch" depends on NAND_OMAP_GPMC 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 NAND_OMAP_GPMC && !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. config NAND_VF610_NFC bool "Support for Freescale NFC for VF610" select SYS_NAND_SELF_INIT 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. 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 config NAND_PXA3XX bool "Support for NAND on PXA3xx and Armada 370/XP/38x" select SYS_NAND_SELF_INIT 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 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 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 rocessors. config NAND_MXS bool "MXS NAND support" depends on MX23 || MX28 || MX6 || MX7 select SYS_NAND_SELF_INIT imply CMD_NAND select APBH_DMA select APBH_DMA_BURST if ARCH_MX6 || ARCH_MX7 select APBH_DMA_BURST8 if ARCH_MX6 || ARCH_MX7 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 && 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_ZYNQ bool "Support for Zynq Nand controller" select SYS_NAND_SELF_INIT 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. comment "Generic NAND options" config SYS_NAND_BLOCK_SIZE hex "NAND chip eraseblock size" depends on ARCH_SUNXI 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_PAGE_SIZE hex "NAND chip page size" depends on ARCH_SUNXI 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 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_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 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" help This is a small implementation of the Denali NAND controller for use on SPL. config SPL_NAND_SIMPLE bool "Use simple SPL NAND driver" depends on !SPL_NAND_AM33XX_BCH help Support for NAND boot using simple NAND drivers that expose the cmd_ctrl() interface. endif endif # if NAND