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 imply CMD_NAND 150 help 151 This enables Nand driver support for Arasan nand flash 152 controller. This uses the hardware ECC for read and 153 write operations. 154 155config NAND_MXC 156 bool "MXC NAND support" 157 depends on CPU_ARM926EJS || CPU_ARM1136 || MX5 158 imply CMD_NAND 159 help 160 This enables the NAND driver for the NAND flash controller on the 161 i.MX27 / i.MX31 / i.MX5 rocessors. 162 163config NAND_MXS 164 bool "MXS NAND support" 165 depends on MX6 || MX7 166 imply CMD_NAND 167 help 168 This enables NAND driver for the NAND flash controller on the 169 MXS processors. 170 171config NAND_ZYNQ 172 bool "Support for Zynq Nand controller" 173 select SYS_NAND_SELF_INIT 174 imply CMD_NAND 175 help 176 This enables Nand driver support for Nand flash controller 177 found on Zynq SoC. 178 179config NAND_ZYNQ_USE_BOOTLOADER1_TIMINGS 180 bool "Enable use of 1st stage bootloader timing for NAND" 181 depends on NAND_ZYNQ 182 help 183 This flag prevent U-boot reconfigure NAND flash controller and reuse 184 the NAND timing from 1st stage bootloader. 185 186comment "Generic NAND options" 187 188# Enhance depends when converting drivers to Kconfig which use this config 189# option (mxc_nand, ndfc, omap_gpmc). 190config SYS_NAND_BUSWIDTH_16BIT 191 bool "Use 16-bit NAND interface" 192 depends on NAND_VF610_NFC || NAND_OMAP_GPMC || NAND_MXC || ARCH_DAVINCI 193 help 194 Indicates that NAND device has 16-bit wide data-bus. In absence of this 195 config, bus-width of NAND device is assumed to be either 8-bit and later 196 determined by reading ONFI params. 197 Above config is useful when NAND device's bus-width information cannot 198 be determined from on-chip ONFI params, like in following scenarios: 199 - SPL boot does not support reading of ONFI parameters. This is done to 200 keep SPL code foot-print small. 201 - In current U-Boot flow using nand_init(), driver initialization 202 happens in board_nand_init() which is called before any device probe 203 (nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are 204 not available while configuring controller. So a static CONFIG_NAND_xx 205 is needed to know the device's bus-width in advance. 206 207if SPL 208 209config SYS_NAND_U_BOOT_LOCATIONS 210 bool "Define U-boot binaries locations in NAND" 211 help 212 Enable CONFIG_SYS_NAND_U_BOOT_OFFS though Kconfig. 213 This option should not be enabled when compiling U-boot for boards 214 defining CONFIG_SYS_NAND_U_BOOT_OFFS in their include/configs/<board>.h 215 file. 216 217config SYS_NAND_U_BOOT_OFFS 218 hex "Location in NAND to read U-Boot from" 219 default 0x800000 if NAND_SUNXI 220 depends on SYS_NAND_U_BOOT_LOCATIONS 221 help 222 Set the offset from the start of the nand where u-boot should be 223 loaded from. 224 225config SYS_NAND_U_BOOT_OFFS_REDUND 226 hex "Location in NAND to read U-Boot from" 227 default SYS_NAND_U_BOOT_OFFS 228 depends on SYS_NAND_U_BOOT_LOCATIONS 229 help 230 Set the offset from the start of the nand where the redundant u-boot 231 should be loaded from. 232 233config SPL_NAND_AM33XX_BCH 234 bool "Enables SPL-NAND driver which supports ELM based" 235 depends on NAND_OMAP_GPMC && !OMAP34XX 236 default y 237 help 238 Hardware ECC correction. This is useful for platforms which have ELM 239 hardware engine and use NAND boot mode. 240 Some legacy platforms like OMAP3xx do not have in-built ELM h/w engine, 241 so those platforms should use CONFIG_SPL_NAND_SIMPLE for enabling 242 SPL-NAND driver with software ECC correction support. 243 244config SPL_NAND_DENALI 245 bool "Support Denali NAND controller for SPL" 246 help 247 This is a small implementation of the Denali NAND controller 248 for use on SPL. 249 250config SPL_NAND_SIMPLE 251 bool "Use simple SPL NAND driver" 252 depends on !SPL_NAND_AM33XX_BCH 253 help 254 Support for NAND boot using simple NAND drivers that 255 expose the cmd_ctrl() interface. 256endif 257 258endif # if NAND 259