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menuconfig NAND
bool "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_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_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.
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/<board>.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
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