drivers/mtd/nand/Kconfig

   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         depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I
  99         select SYS_NAND_SELF_INIT
 100         select SYS_NAND_U_BOOT_LOCATIONS
 101         imply CMD_NAND
 102         ---help---
 103         Enable support for NAND. This option enables the standard and
 104         SPL drivers.
 105         The SPL driver only supports reading from the NAND using DMA
 106         transfers.
 107
 108 if NAND_SUNXI
 109
 110 config NAND_SUNXI_SPL_ECC_STRENGTH
 111         int "Allwinner NAND SPL ECC Strength"
 112         default 64
 113
 114 config NAND_SUNXI_SPL_ECC_SIZE
 115         int "Allwinner NAND SPL ECC Step Size"
 116         default 1024
 117
 118 config NAND_SUNXI_SPL_USABLE_PAGE_SIZE
 119         int "Allwinner NAND SPL Usable Page Size"
 120         default 1024
 121
 122 endif
 123
 124 config NAND_ARASAN
 125         bool "Configure Arasan Nand"
 126         imply CMD_NAND
 127         help
 128           This enables Nand driver support for Arasan nand flash
 129           controller. This uses the hardware ECC for read and
 130           write operations.
 131
 132 config NAND_MXC
 133         bool "MXC NAND support"
 134         depends on CPU_ARM926EJS || CPU_ARM1136 || MX5
 135         imply CMD_NAND
 136         help
 137           This enables the NAND driver for the NAND flash controller on the
 138           i.MX27 / i.MX31 / i.MX5 rocessors.
 139
 140 config NAND_MXS
 141         bool "MXS NAND support"
 142         depends on MX6 || MX7
 143         imply CMD_NAND
 144         help
 145           This enables NAND driver for the NAND flash controller on the
 146           MXS processors.
 147
 148 config NAND_ZYNQ
 149         bool "Support for Zynq Nand controller"
 150         select SYS_NAND_SELF_INIT
 151         imply CMD_NAND
 152         help
 153           This enables Nand driver support for Nand flash controller
 154           found on Zynq SoC.
 155
 156 config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS
 157         bool "Enable use of 1st stage bootloader timing for NAND"
 158         depends on NAND_ZYNQ
 159         help
 160           This flag prevent U-boot reconfigure NAND flash controller and reuse
 161           the NAND timing from 1st stage bootloader.
 162
 163 comment "Generic NAND options"
 164
 165 # Enhance depends when converting drivers to Kconfig which use this config
 166 # option (mxc_nand, ndfc, omap_gpmc).
 167 config SYS_NAND_BUSWIDTH_16BIT
 168         bool "Use 16-bit NAND interface"
 169         depends on NAND_VF610_NFC || NAND_OMAP_GPMC || NAND_MXC || ARCH_DAVINCI
 170         help
 171           Indicates that NAND device has 16-bit wide data-bus. In absence of this
 172           config, bus-width of NAND device is assumed to be either 8-bit and later
 173           determined by reading ONFI params.
 174           Above config is useful when NAND device's bus-width information cannot
 175           be determined from on-chip ONFI params, like in following scenarios:
 176           - SPL boot does not support reading of ONFI parameters. This is done to
 177             keep SPL code foot-print small.
 178           - In current U-Boot flow using nand_init(), driver initialization
 179             happens in board_nand_init() which is called before any device probe
 180             (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are
 181             not available while configuring controller. So a static CONFIG_NAND_xx
 182             is needed to know the device's bus-width in advance.
 183
 184 if SPL
 185
 186 config SYS_NAND_U_BOOT_LOCATIONS
 187         bool "Define U-boot binaries locations in NAND"
 188         help
 189         Enable CONFIG_SYS_NAND_U_BOOT_OFFS though Kconfig.
 190         This option should not be enabled when compiling U-boot for boards
 191         defining CONFIG_SYS_NAND_U_BOOT_OFFS in their include/configs/<board>.h
 192         file.
 193
 194 config SYS_NAND_U_BOOT_OFFS
 195         hex "Location in NAND to read U-Boot from"
 196         default 0x800000 if NAND_SUNXI
 197         depends on SYS_NAND_U_BOOT_LOCATIONS
 198         help
 199         Set the offset from the start of the nand where u-boot should be
 200         loaded from.
 201
 202 config SYS_NAND_U_BOOT_OFFS_REDUND
 203         hex "Location in NAND to read U-Boot from"
 204         default SYS_NAND_U_BOOT_OFFS
 205         depends on SYS_NAND_U_BOOT_LOCATIONS
 206         help
 207         Set the offset from the start of the nand where the redundant u-boot
 208         should be loaded from.
 209
 210 config SPL_NAND_AM33XX_BCH
 211         bool "Enables SPL-NAND driver which supports ELM based"
 212         depends on NAND_OMAP_GPMC && !OMAP34XX
 213         default y
 214         help
 215           Hardware ECC correction. This is useful for platforms which have ELM
 216           hardware engine and use NAND boot mode.
 217           Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine,
 218           so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling
 219           SPL-NAND driver with software ECC correction support.
 220
 221 config SPL_NAND_DENALI
 222         bool "Support Denali NAND controller for SPL"
 223         help
 224           This is a small implementation of the Denali NAND controller
 225           for use on SPL.
 226
 227 config SPL_NAND_SIMPLE
 228         bool "Use simple SPL NAND driver"
 229         depends on !SPL_NAND_AM33XX_BCH
 230         help
 231           Support for NAND boot using simple NAND drivers that
 232           expose the cmd_ctrl() interface.
 233 endif
 234
 235 endif   # if NAND