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 14 select SYS_NAND_SELF_INIT 15 imply CMD_NAND 16 17config 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 25config 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 34config 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 43config 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 52config 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 63config 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 73choice 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 80config SYS_NAND_VF610_NFC_45_ECC_BYTES 81 bool "24-error correction (45 ECC bytes)" 82 83config SYS_NAND_VF610_NFC_60_ECC_BYTES 84 bool "32-error correction (60 ECC bytes)" 85 86endchoice 87 88config 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 96config NAND_ROCKCHIP 97 bool "Support for NAND on Rockchip SoCs" 98 select SYS_NAND_SELF_INIT 99 default n 100 ---help--- 101 Enable support for Rockchip nand. 102 103config NAND_ROCKCHIP_V9 104 bool "Support for NAND V9 on Rockchip SoCs" 105 select SYS_NAND_SELF_INIT 106 default n 107 ---help--- 108 Enable support for Rockchip nand v9. 109 110if NAND_ROCKCHIP || NAND_ROCKCHIP_V9 111config NAND_ROCKCHIP_DT 112 bool "Support Rockchip NAND controller as a DT device" 113 default y 114 help 115 Enable the driver for Rockchip NAND flash on platforms 116 using device tree. 117endif 118 119config NAND_SUNXI 120 bool "Support for NAND on Allwinner SoCs" 121 depends on MACH_SUN4I || MACH_SUN5I || MACH_SUN7I 122 select SYS_NAND_SELF_INIT 123 select SYS_NAND_U_BOOT_LOCATIONS 124 imply CMD_NAND 125 ---help--- 126 Enable support for NAND. This option enables the standard and 127 SPL drivers. 128 The SPL driver only supports reading from the NAND using DMA 129 transfers. 130 131if NAND_SUNXI 132 133config NAND_SUNXI_SPL_ECC_STRENGTH 134 int "Allwinner NAND SPL ECC Strength" 135 default 64 136 137config NAND_SUNXI_SPL_ECC_SIZE 138 int "Allwinner NAND SPL ECC Step Size" 139 default 1024 140 141config NAND_SUNXI_SPL_USABLE_PAGE_SIZE 142 int "Allwinner NAND SPL Usable Page Size" 143 default 1024 144 145endif 146 147config NAND_ARASAN 148 bool "Configure Arasan Nand" 149 select SYS_NAND_SELF_INIT 150 imply CMD_NAND 151 help 152 This enables Nand driver support for Arasan nand flash 153 controller. This uses the hardware ECC for read and 154 write operations. 155 156config NAND_MXC 157 bool "MXC NAND support" 158 depends on CPU_ARM926EJS || CPU_ARM1136 || MX5 159 imply CMD_NAND 160 help 161 This enables the NAND driver for the NAND flash controller on the 162 i.MX27 / i.MX31 / i.MX5 rocessors. 163 164config NAND_MXS 165 bool "MXS NAND support" 166 depends on MX23 || MX28 || MX6 || MX7 167 imply CMD_NAND 168 select APBH_DMA 169 select APBH_DMA_BURST if ARCH_MX6 || ARCH_MX7 170 select APBH_DMA_BURST8 if ARCH_MX6 || ARCH_MX7 171 help 172 This enables NAND driver for the NAND flash controller on the 173 MXS processors. 174 175config NAND_ZYNQ 176 bool "Support for Zynq Nand controller" 177 select SYS_NAND_SELF_INIT 178 imply CMD_NAND 179 help 180 This enables Nand driver support for Nand flash controller 181 found on Zynq SoC. 182 183config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS 184 bool "Enable use of 1st stage bootloader timing for NAND" 185 depends on NAND_ZYNQ 186 help 187 This flag prevent U-boot reconfigure NAND flash controller and reuse 188 the NAND timing from 1st stage bootloader. 189 190comment "Generic NAND options" 191 192# Enhance depends when converting drivers to Kconfig which use this config 193# option (mxc_nand, ndfc, omap_gpmc). 194config SYS_NAND_BUSWIDTH_16BIT 195 bool "Use 16-bit NAND interface" 196 depends on NAND_VF610_NFC || NAND_OMAP_GPMC || NAND_MXC || ARCH_DAVINCI 197 help 198 Indicates that NAND device has 16-bit wide data-bus. In absence of this 199 config, bus-width of NAND device is assumed to be either 8-bit and later 200 determined by reading ONFI params. 201 Above config is useful when NAND device's bus-width information cannot 202 be determined from on-chip ONFI params, like in following scenarios: 203 - SPL boot does not support reading of ONFI parameters. This is done to 204 keep SPL code foot-print small. 205 - In current U-Boot flow using nand_init(), driver initialization 206 happens in board_nand_init() which is called before any device probe 207 (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are 208 not available while configuring controller. So a static CONFIG_NAND_xx 209 is needed to know the device's bus-width in advance. 210 211if SPL 212 213config SYS_NAND_U_BOOT_LOCATIONS 214 bool "Define U-boot binaries locations in NAND" 215 help 216 Enable CONFIG_SYS_NAND_U_BOOT_OFFS though Kconfig. 217 This option should not be enabled when compiling U-boot for boards 218 defining CONFIG_SYS_NAND_U_BOOT_OFFS in their include/configs/<board>.h 219 file. 220 221config SYS_NAND_U_BOOT_OFFS 222 hex "Location in NAND to read U-Boot from" 223 default 0x800000 if NAND_SUNXI 224 depends on SYS_NAND_U_BOOT_LOCATIONS 225 help 226 Set the offset from the start of the nand where u-boot should be 227 loaded from. 228 229config SYS_NAND_U_BOOT_OFFS_REDUND 230 hex "Location in NAND to read U-Boot from" 231 default SYS_NAND_U_BOOT_OFFS 232 depends on SYS_NAND_U_BOOT_LOCATIONS 233 help 234 Set the offset from the start of the nand where the redundant u-boot 235 should be loaded from. 236 237config SPL_NAND_AM33XX_BCH 238 bool "Enables SPL-NAND driver which supports ELM based" 239 depends on NAND_OMAP_GPMC && !OMAP34XX 240 default y 241 help 242 Hardware ECC correction. This is useful for platforms which have ELM 243 hardware engine and use NAND boot mode. 244 Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine, 245 so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling 246 SPL-NAND driver with software ECC correction support. 247 248config SPL_NAND_DENALI 249 bool "Support Denali NAND controller for SPL" 250 help 251 This is a small implementation of the Denali NAND controller 252 for use on SPL. 253 254config SPL_NAND_SIMPLE 255 bool "Use simple SPL NAND driver" 256 depends on !SPL_NAND_AM33XX_BCH 257 help 258 Support for NAND boot using simple NAND drivers that 259 expose the cmd_ctrl() interface. 260endif 261 262endif # if NAND 263