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      1 
      2 menuconfig NAND
      3 	bool "NAND Device Support"
      4 if NAND
      5 
      6 config SYS_NAND_SELF_INIT
      7 	bool
      8 	help
      9 	  This option, if enabled, provides more flexible and linux-like
     10 	  NAND initialization process.
     11 
     12 config NAND_DENALI
     13 	bool
     14 	select SYS_NAND_SELF_INIT
     15 	imply CMD_NAND
     16 
     17 config NAND_DENALI_DT
     18 	bool "Support Denali NAND controller as a DT device"
     19 	select NAND_DENALI
     20 	depends on OF_CONTROL && DM
     21 	help
     22 	  Enable the driver for NAND flash on platforms using a Denali NAND
     23 	  controller as a DT device.
     24 
     25 config NAND_DENALI_SPARE_AREA_SKIP_BYTES
     26 	int "Number of bytes skipped in OOB area"
     27 	depends on NAND_DENALI
     28 	range 0 63
     29 	help
     30 	  This option specifies the number of bytes to skip from the beginning
     31 	  of OOB area before last ECC sector data starts.  This is potentially
     32 	  used to preserve the bad block marker in the OOB area.
     33 
     34 config NAND_OMAP_GPMC
     35 	bool "Support OMAP GPMC NAND controller"
     36 	depends on ARCH_OMAP2PLUS
     37 	help
     38 	  Enables omap_gpmc.c driver for OMAPx and AMxxxx platforms.
     39 	  GPMC controller is used for parallel NAND flash devices, and can
     40 	  do ECC calculation (not ECC error detection) for HAM1, BCH4, BCH8
     41 	  and BCH16 ECC algorithms.
     42 
     43 config NAND_OMAP_GPMC_PREFETCH
     44 	bool "Enable GPMC Prefetch"
     45 	depends on NAND_OMAP_GPMC
     46 	default y
     47 	help
     48 	  On OMAP platforms that use the GPMC controller
     49 	  (CONFIG_NAND_OMAP_GPMC_PREFETCH), this options enables the code that
     50 	  uses the prefetch mode to speed up read operations.
     51 
     52 config NAND_OMAP_ELM
     53 	bool "Enable ELM driver for OMAPxx and AMxx platforms."
     54 	depends on NAND_OMAP_GPMC && !OMAP34XX
     55 	help
     56 	  ELM controller is used for ECC error detection (not ECC calculation)
     57 	  of BCH4, BCH8 and BCH16 ECC algorithms.
     58 	  Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine,
     59 	  thus such SoC platforms need to depend on software library for ECC error
     60 	  detection. However ECC calculation on such plaforms would still be
     61 	  done by GPMC controller.
     62 
     63 config NAND_VF610_NFC
     64 	bool "Support for Freescale NFC for VF610"
     65 	select SYS_NAND_SELF_INIT
     66 	imply CMD_NAND
     67 	help
     68 	  Enables support for NAND Flash Controller on some Freescale
     69 	  processors like the VF610, MCF54418 or Kinetis K70.
     70 	  The driver supports a maximum 2k page size. The driver
     71 	  currently does not support hardware ECC.
     72 
     73 choice
     74 	prompt "Hardware ECC strength"
     75 	depends on NAND_VF610_NFC
     76 	default SYS_NAND_VF610_NFC_45_ECC_BYTES
     77 	help
     78 	  Select the ECC strength used in the hardware BCH ECC block.
     79 
     80 config SYS_NAND_VF610_NFC_45_ECC_BYTES
     81 	bool "24-error correction (45 ECC bytes)"
     82 
     83 config SYS_NAND_VF610_NFC_60_ECC_BYTES
     84 	bool "32-error correction (60 ECC bytes)"
     85 
     86 endchoice
     87 
     88 config NAND_PXA3XX
     89 	bool "Support for NAND on PXA3xx and Armada 370/XP/38x"
     90 	select SYS_NAND_SELF_INIT
     91 	imply CMD_NAND
     92 	help
     93 	  This enables the driver for the NAND flash device found on
     94 	  PXA3xx processors (NFCv1) and also on Armada 370/XP (NFCv2).
     95 
     96 config NAND_SUNXI
     97 	bool "Support for NAND on Allwinner SoCs"
     98 	default ARCH_SUNXI
     99 	depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I || MACH_SUN8I
    100 	select SYS_NAND_SELF_INIT
    101 	select SYS_NAND_U_BOOT_LOCATIONS
    102 	select SPL_NAND_SUPPORT
    103 	imply CMD_NAND
    104 	---help---
    105 	Enable support for NAND. This option enables the standard and
    106 	SPL drivers.
    107 	The SPL driver only supports reading from the NAND using DMA
    108 	transfers.
    109 
    110 if NAND_SUNXI
    111 
    112 config NAND_SUNXI_SPL_ECC_STRENGTH
    113 	int "Allwinner NAND SPL ECC Strength"
    114 	default 64
    115 
    116 config NAND_SUNXI_SPL_ECC_SIZE
    117 	int "Allwinner NAND SPL ECC Step Size"
    118 	default 1024
    119 
    120 config NAND_SUNXI_SPL_USABLE_PAGE_SIZE
    121 	int "Allwinner NAND SPL Usable Page Size"
    122 	default 1024
    123 
    124 endif
    125 
    126 config NAND_ARASAN
    127 	bool "Configure Arasan Nand"
    128 	select SYS_NAND_SELF_INIT
    129 	imply CMD_NAND
    130 	help
    131 	  This enables Nand driver support for Arasan nand flash
    132 	  controller. This uses the hardware ECC for read and
    133 	  write operations.
    134 
    135 config NAND_MXC
    136 	bool "MXC NAND support"
    137 	depends on CPU_ARM926EJS || CPU_ARM1136 || MX5
    138 	imply CMD_NAND
    139 	help
    140 	  This enables the NAND driver for the NAND flash controller on the
    141 	  i.MX27 / i.MX31 / i.MX5 rocessors.
    142 
    143 config NAND_MXS
    144 	bool "MXS NAND support"
    145 	depends on MX23 || MX28 || MX6 || MX7
    146 	select SYS_NAND_SELF_INIT
    147 	imply CMD_NAND
    148 	select APBH_DMA
    149 	select APBH_DMA_BURST if ARCH_MX6 || ARCH_MX7
    150 	select APBH_DMA_BURST8 if ARCH_MX6 || ARCH_MX7
    151 	help
    152 	  This enables NAND driver for the NAND flash controller on the
    153 	  MXS processors.
    154 
    155 if NAND_MXS
    156 
    157 config NAND_MXS_DT
    158 	bool "Support MXS NAND controller as a DT device"
    159 	depends on OF_CONTROL && MTD
    160 	help
    161 	  Enable the driver for MXS NAND flash on platforms using
    162 	  device tree.
    163 
    164 config NAND_MXS_USE_MINIMUM_ECC
    165 	bool "Use minimum ECC strength supported by the controller"
    166 	default false
    167 
    168 endif
    169 
    170 config NAND_ZYNQ
    171 	bool "Support for Zynq Nand controller"
    172 	select SYS_NAND_SELF_INIT
    173 	imply CMD_NAND
    174 	help
    175 	  This enables Nand driver support for Nand flash controller
    176 	  found on Zynq SoC.
    177 
    178 config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS
    179 	bool "Enable use of 1st stage bootloader timing for NAND"
    180 	depends on NAND_ZYNQ
    181 	help
    182 	  This flag prevent U-boot reconfigure NAND flash controller and reuse
    183 	  the NAND timing from 1st stage bootloader.
    184 
    185 comment "Generic NAND options"
    186 
    187 config SYS_NAND_BLOCK_SIZE
    188 	hex "NAND chip eraseblock size"
    189 	depends on ARCH_SUNXI
    190 	help
    191 	  Number of data bytes in one eraseblock for the NAND chip on the
    192 	  board. This is the multiple of NAND_PAGE_SIZE and the number of
    193 	  pages.
    194 
    195 config SYS_NAND_PAGE_SIZE
    196 	hex "NAND chip page size"
    197 	depends on ARCH_SUNXI
    198 	help
    199 	  Number of data bytes in one page for the NAND chip on the
    200 	  board, not including the OOB area.
    201 
    202 config SYS_NAND_OOBSIZE
    203 	hex "NAND chip OOB size"
    204 	depends on ARCH_SUNXI
    205 	help
    206 	  Number of bytes in the Out-Of-Band area for the NAND chip on
    207 	  the board.
    208 
    209 # Enhance depends when converting drivers to Kconfig which use this config
    210 # option (mxc_nand, ndfc, omap_gpmc).
    211 config SYS_NAND_BUSWIDTH_16BIT
    212 	bool "Use 16-bit NAND interface"
    213 	depends on NAND_VF610_NFC || NAND_OMAP_GPMC || NAND_MXC || ARCH_DAVINCI
    214 	help
    215 	  Indicates that NAND device has 16-bit wide data-bus. In absence of this
    216 	  config, bus-width of NAND device is assumed to be either 8-bit and later
    217 	  determined by reading ONFI params.
    218 	  Above config is useful when NAND device's bus-width information cannot
    219 	  be determined from on-chip ONFI params, like in following scenarios:
    220 	  - SPL boot does not support reading of ONFI parameters. This is done to
    221 	    keep SPL code foot-print small.
    222 	  - In current U-Boot flow using nand_init(), driver initialization
    223 	    happens in board_nand_init() which is called before any device probe
    224 	    (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are
    225 	    not available while configuring controller. So a static CONFIG_NAND_xx
    226 	    is needed to know the device's bus-width in advance.
    227 
    228 if SPL
    229 
    230 config SYS_NAND_U_BOOT_LOCATIONS
    231 	bool "Define U-boot binaries locations in NAND"
    232 	help
    233 	Enable CONFIG_SYS_NAND_U_BOOT_OFFS though Kconfig.
    234 	This option should not be enabled when compiling U-boot for boards
    235 	defining CONFIG_SYS_NAND_U_BOOT_OFFS in their include/configs/<board>.h
    236 	file.
    237 
    238 config SYS_NAND_U_BOOT_OFFS
    239 	hex "Location in NAND to read U-Boot from"
    240 	default 0x800000 if NAND_SUNXI
    241 	depends on SYS_NAND_U_BOOT_LOCATIONS
    242 	help
    243 	Set the offset from the start of the nand where u-boot should be
    244 	loaded from.
    245 
    246 config SYS_NAND_U_BOOT_OFFS_REDUND
    247 	hex "Location in NAND to read U-Boot from"
    248 	default SYS_NAND_U_BOOT_OFFS
    249 	depends on SYS_NAND_U_BOOT_LOCATIONS
    250 	help
    251 	Set the offset from the start of the nand where the redundant u-boot
    252 	should be loaded from.
    253 
    254 config SPL_NAND_AM33XX_BCH
    255 	bool "Enables SPL-NAND driver which supports ELM based"
    256 	depends on NAND_OMAP_GPMC && !OMAP34XX
    257 	default y
    258         help
    259 	  Hardware ECC correction. This is useful for platforms which have ELM
    260 	  hardware engine and use NAND boot mode.
    261 	  Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine,
    262 	  so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling
    263           SPL-NAND driver with software ECC correction support.
    264 
    265 config SPL_NAND_DENALI
    266 	bool "Support Denali NAND controller for SPL"
    267 	help
    268 	  This is a small implementation of the Denali NAND controller
    269 	  for use on SPL.
    270 
    271 config SPL_NAND_SIMPLE
    272 	bool "Use simple SPL NAND driver"
    273 	depends on !SPL_NAND_AM33XX_BCH
    274 	help
    275 	  Support for NAND boot using simple NAND drivers that
    276 	  expose the cmd_ctrl() interface.
    277 endif
    278 
    279 endif   # if NAND
    280