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"
+ depends on FSL_ELBC
+ help
+ Enable the Freescale Enhanced Local Bus Controller FCM NAND driver.
+
+config NAND_FSL_IFC
+ bool "Support Freescale Integrated Flash Controller NAND driver"
+ help
+ Enable the Freescale Integrated Flash Controller NAND driver.
+
config NAND_LPC32XX_MLC
bool "Support LPC32XX_MLC controller"
help
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"
- depends on NAND_OMAP_GPMC
default y
help
On OMAP platforms that use the GPMC controller
config NAND_OMAP_ELM
bool "Enable ELM driver for OMAPxx and AMxx platforms."
- depends on NAND_OMAP_GPMC && !OMAP34XX
+ depends on !OMAP34XX
help
ELM controller is used for ECC error detection (not ECC calculation)
of BCH4, BCH8 and BCH16 ECC algorithms.
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
imply CMD_NAND
help
This enables the NAND driver for the NAND flash controller on the
- i.MX27 / i.MX31 / i.MX5 rocessors.
+ i.MX27 / i.MX31 / i.MX5 processors.
config NAND_MXS
bool "MXS NAND support"
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 SYS_NAND_SELF_INIT
config SYS_NAND_BLOCK_SIZE
hex "NAND chip eraseblock size"
depends on ARCH_SUNXI || SPL_NAND_SUPPORT || TPL_NAND_SUPPORT
- depends on !NAND_MXS_DT && !NAND_DENALI_DT && !NAND_LPC32XX_MLC
+ depends on !NAND_MXS && !NAND_DENALI_DT && !NAND_LPC32XX_MLC && !NAND_FSL_IFC
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
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_DT && !NAND_DENALI_DT && !NAND_LPC32XX_MLC
+ depends on !NAND_MXS && !NAND_DENALI_DT && !NAND_LPC32XX_MLC
help
Number of data bytes in one page for the NAND chip on the
board, not including the OOB area.
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_DT && !NAND_DENALI_DT && !NAND_LPC32XX_MLC
+ 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.
not available while configuring controller. So a static CONFIG_NAND_xx
is needed to know the device's bus-width in advance.
-config SYS_NAND_MAX_CHIPS
- int "NAND max chips"
- default 1
- depends on NAND_ARASAN
- help
- The maximum number of NAND chips per device to be supported.
-
if SPL
config SYS_NAND_5_ADDR_CYCLE