1 2menuconfig NAND 3 bool "NAND Device Support" 4if NAND 5 6config SYS_NAND_SELF_INIT 7 bool 8 help 9 This option, if enabled, provides more flexible and linux-like 10 NAND initialization process. 11 12config NAND_DENALI 13 bool "Support Denali NAND controller" 14 select SYS_NAND_SELF_INIT 15 imply CMD_NAND 16 help 17 Enable support for the Denali NAND controller. 18 19config NAND_DENALI_DT 20 bool "Support Denali NAND controller as a DT device" 21 depends on NAND_DENALI && OF_CONTROL && DM 22 help 23 Enable the driver for NAND flash on platforms using a Denali NAND 24 controller as a DT device. 25 26config SYS_NAND_DENALI_64BIT 27 bool "Use 64-bit variant of Denali NAND controller" 28 depends on NAND_DENALI 29 help 30 The Denali NAND controller IP has some variations in terms of 31 the bus interface. The DMA setup sequence is completely differenct 32 between 32bit / 64bit AXI bus variants. 33 34 If your Denali NAND controller is the 64-bit variant, say Y. 35 Otherwise (32 bit), say N. 36 37config NAND_DENALI_SPARE_AREA_SKIP_BYTES 38 int "Number of bytes skipped in OOB area" 39 depends on NAND_DENALI 40 range 0 63 41 help 42 This option specifies the number of bytes to skip from the beginning 43 of OOB area before last ECC sector data starts. This is potentially 44 used to preserve the bad block marker in the OOB area. 45 46config NAND_OMAP_GPMC 47 bool "Support OMAP GPMC NAND controller" 48 depends on ARCH_OMAP2PLUS 49 help 50 Enables omap_gpmc.c driver for OMAPx and AMxxxx platforms. 51 GPMC controller is used for parallel NAND flash devices, and can 52 do ECC calculation (not ECC error detection) for HAM1, BCH4, BCH8 53 and BCH16 ECC algorithms. 54 55config NAND_OMAP_GPMC_PREFETCH 56 bool "Enable GPMC Prefetch" 57 depends on NAND_OMAP_GPMC 58 default y 59 help 60 On OMAP platforms that use the GPMC controller 61 (CONFIG_NAND_OMAP_GPMC_PREFETCH), this options enables the code that 62 uses the prefetch mode to speed up read operations. 63 64config NAND_OMAP_ELM 65 bool "Enable ELM driver for OMAPxx and AMxx platforms." 66 depends on NAND_OMAP_GPMC && !OMAP34XX 67 help 68 ELM controller is used for ECC error detection (not ECC calculation) 69 of BCH4, BCH8 and BCH16 ECC algorithms. 70 Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine, 71 thus such SoC platforms need to depend on software library for ECC error 72 detection. However ECC calculation on such plaforms would still be 73 done by GPMC controller. 74 75config NAND_VF610_NFC 76 bool "Support for Freescale NFC for VF610" 77 select SYS_NAND_SELF_INIT 78 imply CMD_NAND 79 help 80 Enables support for NAND Flash Controller on some Freescale 81 processors like the VF610, MCF54418 or Kinetis K70. 82 The driver supports a maximum 2k page size. The driver 83 currently does not support hardware ECC. 84 85choice 86 prompt "Hardware ECC strength" 87 depends on NAND_VF610_NFC 88 default SYS_NAND_VF610_NFC_45_ECC_BYTES 89 help 90 Select the ECC strength used in the hardware BCH ECC block. 91 92config SYS_NAND_VF610_NFC_45_ECC_BYTES 93 bool "24-error correction (45 ECC bytes)" 94 95config SYS_NAND_VF610_NFC_60_ECC_BYTES 96 bool "32-error correction (60 ECC bytes)" 97 98endchoice 99 100config NAND_PXA3XX 101 bool "Support for NAND on PXA3xx and Armada 370/XP/38x" 102 select SYS_NAND_SELF_INIT 103 imply CMD_NAND 104 help 105 This enables the driver for the NAND flash device found on 106 PXA3xx processors (NFCv1) and also on Armada 370/XP (NFCv2). 107 108config NAND_ROCKCHIP 109 bool "Support for NAND on Rockchip SoCs" 110 select SYS_NAND_SELF_INIT 111 default n 112 ---help--- 113 Enable support for Rockchip nand. 114 115config NAND_ROCKCHIP_V9 116 bool "Support for NAND V9 on Rockchip SoCs" 117 select SYS_NAND_SELF_INIT 118 default n 119 ---help--- 120 Enable support for Rockchip nand v9. 121 122if NAND_ROCKCHIP || NAND_ROCKCHIP_V9 123config NAND_ROCKCHIP_DT 124 bool "Support Rockchip NAND controller as a DT device" 125 default y 126 help 127 Enable the driver for Rockchip NAND flash on platforms 128 using device tree. 129endif 130 131config NAND_SUNXI 132 bool "Support for NAND on Allwinner SoCs" 133 depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I 134 select SYS_NAND_SELF_INIT 135 select SYS_NAND_U_BOOT_LOCATIONS 136 imply CMD_NAND 137 ---help--- 138 Enable support for NAND. This option enables the standard and 139 SPL drivers. 140 The SPL driver only supports reading from the NAND using DMA 141 transfers. 142 143if NAND_SUNXI 144 145config NAND_SUNXI_SPL_ECC_STRENGTH 146 int "Allwinner NAND SPL ECC Strength" 147 default 64 148 149config NAND_SUNXI_SPL_ECC_SIZE 150 int "Allwinner NAND SPL ECC Step Size" 151 default 1024 152 153config NAND_SUNXI_SPL_USABLE_PAGE_SIZE 154 int "Allwinner NAND SPL Usable Page Size" 155 default 1024 156 157endif 158 159config NAND_ARASAN 160 bool "Configure Arasan Nand" 161 imply CMD_NAND 162 help 163 This enables Nand driver support for Arasan nand flash 164 controller. This uses the hardware ECC for read and 165 write operations. 166 167config NAND_MXC 168 bool "MXC NAND support" 169 depends on CPU_ARM926EJS || CPU_ARM1136 || MX5 170 imply CMD_NAND 171 help 172 This enables the NAND driver for the NAND flash controller on the 173 i.MX27 / i.MX31 / i.MX5 rocessors. 174 175config NAND_MXS 176 bool "MXS NAND support" 177 depends on MX6 || MX7 178 imply CMD_NAND 179 help 180 This enables NAND driver for the NAND flash controller on the 181 MXS processors. 182 183config NAND_ZYNQ 184 bool "Support for Zynq Nand controller" 185 select SYS_NAND_SELF_INIT 186 imply CMD_NAND 187 help 188 This enables Nand driver support for Nand flash controller 189 found on Zynq SoC. 190 191comment "Generic NAND options" 192 193# Enhance depends when converting drivers to Kconfig which use this config 194# option (mxc_nand, ndfc, omap_gpmc). 195config SYS_NAND_BUSWIDTH_16BIT 196 bool "Use 16-bit NAND interface" 197 depends on NAND_VF610_NFC || NAND_OMAP_GPMC || NAND_MXC || ARCH_DAVINCI 198 help 199 Indicates that NAND device has 16-bit wide data-bus. In absence of this 200 config, bus-width of NAND device is assumed to be either 8-bit and later 201 determined by reading ONFI params. 202 Above config is useful when NAND device's bus-width information cannot 203 be determined from on-chip ONFI params, like in following scenarios: 204 - SPL boot does not support reading of ONFI parameters. This is done to 205 keep SPL code foot-print small. 206 - In current U-Boot flow using nand_init(), driver initialization 207 happens in board_nand_init() which is called before any device probe 208 (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are 209 not available while configuring controller. So a static CONFIG_NAND_xx 210 is needed to know the device's bus-width in advance. 211 212if SPL 213 214config SYS_NAND_U_BOOT_LOCATIONS 215 bool "Define U-boot binaries locations in NAND" 216 help 217 Enable CONFIG_SYS_NAND_U_BOOT_OFFS though Kconfig. 218 This option should not be enabled when compiling U-boot for boards 219 defining CONFIG_SYS_NAND_U_BOOT_OFFS in their include/configs/<board>.h 220 file. 221 222config SYS_NAND_U_BOOT_OFFS 223 hex "Location in NAND to read U-Boot from" 224 default 0x800000 if NAND_SUNXI 225 depends on SYS_NAND_U_BOOT_LOCATIONS 226 help 227 Set the offset from the start of the nand where u-boot should be 228 loaded from. 229 230config SYS_NAND_U_BOOT_OFFS_REDUND 231 hex "Location in NAND to read U-Boot from" 232 default SYS_NAND_U_BOOT_OFFS 233 depends on SYS_NAND_U_BOOT_LOCATIONS 234 help 235 Set the offset from the start of the nand where the redundant u-boot 236 should be loaded from. 237 238config SPL_NAND_AM33XX_BCH 239 bool "Enables SPL-NAND driver which supports ELM based" 240 depends on NAND_OMAP_GPMC && !OMAP34XX 241 default y 242 help 243 Hardware ECC correction. This is useful for platforms which have ELM 244 hardware engine and use NAND boot mode. 245 Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine, 246 so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling 247 SPL-NAND driver with software ECC correction support. 248 249config SPL_NAND_DENALI 250 bool "Support Denali NAND controller for SPL" 251 help 252 This is a small implementation of the Denali NAND controller 253 for use on SPL. 254 255config SPL_NAND_SIMPLE 256 bool "Use simple SPL NAND driver" 257 depends on !SPL_NAND_AM33XX_BCH 258 help 259 Support for NAND boot using simple NAND drivers that 260 expose the cmd_ctrl() interface. 261endif 262 263endif # if NAND 264