drivers/mtd/nand/Kconfig

menu "NAND Device Support"

config SYS_NAND_SELF_INIT
	bool
	help
	  This option, if enabled, provides more flexible and linux-like
	  NAND initialization process.

config NAND_DENALI
	bool "Support Denali NAND controller"
	select SYS_NAND_SELF_INIT
	help
	  Enable support for the Denali NAND controller.

config SYS_NAND_DENALI_64BIT
	bool "Use 64-bit variant of Denali NAND controller"
	depends on NAND_DENALI
	help
	  The Denali NAND controller IP has some variations in terms of
	  the bus interface.  The DMA setup sequence is completely differenct
	  between 32bit / 64bit AXI bus variants.

	  If your Denali NAND controller is the 64-bit variant, say Y.
	  Otherwise (32 bit), say N.

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_VF610_NFC
	bool "Support for Freescale NFC for VF610/MPC5125"
	select SYS_NAND_SELF_INIT
	help
	  Enables support for NAND Flash Controller on some Freescale
	  processors like the VF610, MPC5125, 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

comment "Generic NAND options"

# 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
	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 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_SUNXI
	bool "Support for NAND on Allwinner A20 in SPL"
	depends on MACH_SUN7I
	---help---
	Enable support for NAND. This option allows SPL to read from
	sunxi NAND using DMA transfers.
	Depending on the NAND chip, values like ECC strength and page sizes
	have to be configured.

config NAND_SUNXI_SPL_SYNDROME_PARTITIONS_END
	hex "Size of syndrome partitions in sunxi NAND"
	default 0x400000
	depends on SPL_NAND_SUNXI
	---help---
	End address for boot partitions on NAND. Those partitions have a
	different random seed that has to match the sunxi BROM setting.

config NAND_SUNXI_SPL_ECC_STRENGTH
	int "ECC Strength for sunxi NAND"
	default 40
	depends on SPL_NAND_SUNXI
	---help---
	ECC strength used by the sunxi NAND SPL driver. This is specific to the
	chosen NAND chip and has to match the value used by the sunxi BROM.

config NAND_SUNXI_SPL_ECC_PAGE_SIZE
	hex "ECC page size for sunxi NAND"
	default 0x400
	depends on SPL_NAND_SUNXI
	---help---
	ECC page size used by the sunxi NAND SPL driver for syndrome partitions.
	This setting has to match the value used by the sunxi BROM.

config NAND_SUNXI_SPL_PAGE_SIZE
	hex "Page size for sunxi NAND"
	default 0x2000
	depends on SPL_NAND_SUNXI
	---help---
	Page size of the NAND flash used by the sunxi NAND SPL driver. This is
	specific to the chosen NAND chip.
endif

endmenu