uboot/configs/axm_defconfig
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   1CONFIG_ARM=y
   2CONFIG_SKIP_LOWLEVEL_INIT_ONLY=y
   3CONFIG_SPL_SKIP_LOWLEVEL_INIT_ONLY=y
   4CONFIG_SPL_SYS_DCACHE_OFF=y
   5CONFIG_ARCH_CPU_INIT=y
   6CONFIG_SYS_THUMB_BUILD=y
   7# CONFIG_SPL_USE_ARCH_MEMCPY is not set
   8# CONFIG_SPL_USE_ARCH_MEMSET is not set
   9CONFIG_ARCH_AT91=y
  10CONFIG_SPL_LDSCRIPT="arch/arm/cpu/u-boot-spl.lds"
  11CONFIG_SYS_TEXT_BASE=0x21000000
  12CONFIG_SYS_MALLOC_LEN=0x460000
  13CONFIG_SYS_MALLOC_F_LEN=0x2000
  14CONFIG_TARGET_TAURUS=y
  15CONFIG_SPL_GPIO=y
  16CONFIG_SPL_LIBCOMMON_SUPPORT=y
  17CONFIG_SPL_LIBGENERIC_SUPPORT=y
  18CONFIG_NR_DRAM_BANKS=1
  19CONFIG_ENV_OFFSET=0x100000
  20CONFIG_SPL_DM_SPI=y
  21CONFIG_DEFAULT_DEVICE_TREE="at91sam9g20-taurus"
  22CONFIG_SPL_SYS_MALLOC_F_LEN=0x1000
  23CONFIG_SPL=y
  24CONFIG_DEBUG_UART_BASE=0xfffff200
  25CONFIG_DEBUG_UART_CLOCK=18432000
  26CONFIG_ENV_OFFSET_REDUND=0x180000
  27CONFIG_SPL_SPI_FLASH_SUPPORT=y
  28CONFIG_SPL_SPI=y
  29CONFIG_DEBUG_UART=y
  30CONFIG_SYS_LOAD_ADDR=0x22000000
  31CONFIG_SYS_EXTRA_OPTIONS="AT91SAM9G20"
  32CONFIG_BOOTDELAY=3
  33CONFIG_USE_BOOTCOMMAND=y
  34CONFIG_BOOTCOMMAND="run flash_self"
  35# CONFIG_DISPLAY_BOARDINFO is not set
  36CONFIG_BOARD_EARLY_INIT_F=y
  37# CONFIG_SPL_LEGACY_IMAGE_SUPPORT is not set
  38CONFIG_SPL_SYS_MALLOC_SIMPLE=y
  39CONFIG_SPL_CRC32=y
  40CONFIG_SPL_NAND_SUPPORT=y
  41CONFIG_SPL_NAND_DRIVERS=y
  42CONFIG_SPL_NAND_ECC=y
  43CONFIG_SPL_NAND_BASE=y
  44CONFIG_SPL_DM_SPI_FLASH=y
  45CONFIG_HUSH_PARSER=y
  46CONFIG_SYS_PROMPT="U-Boot> "
  47# CONFIG_CMD_BDI is not set
  48CONFIG_CMD_BOOTZ=y
  49# CONFIG_CMD_IMI is not set
  50# CONFIG_CMD_LOADS is not set
  51CONFIG_CMD_NAND=y
  52# CONFIG_CMD_PINMUX is not set
  53CONFIG_CMD_SPI=y
  54# CONFIG_CMD_SOURCE is not set
  55# CONFIG_CMD_SETEXPR is not set
  56CONFIG_CMD_DHCP=y
  57CONFIG_CMD_PING=y
  58CONFIG_CMD_MTDPARTS=y
  59CONFIG_OF_CONTROL=y
  60CONFIG_SPL_OF_CONTROL=y
  61CONFIG_SPL_OF_PLATDATA=y
  62CONFIG_ENV_IS_IN_NAND=y
  63CONFIG_SYS_REDUNDAND_ENVIRONMENT=y
  64CONFIG_SYS_RELOC_GD_ENV_ADDR=y
  65CONFIG_SPL_DM=y
  66CONFIG_BLK=y
  67CONFIG_HAVE_BLOCK_DEVICE=y
  68CONFIG_CLK=y
  69CONFIG_CLK_AT91=y
  70CONFIG_AT91_GPIO=y
  71# CONFIG_MMC is not set
  72CONFIG_MTD=y
  73CONFIG_MTD_RAW_NAND=y
  74# CONFIG_SYS_NAND_USE_FLASH_BBT is not set
  75CONFIG_NAND_ATMEL=y
  76CONFIG_SYS_NAND_BLOCK_SIZE=0x20000
  77CONFIG_SYS_NAND_PAGE_COUNT=0x40
  78CONFIG_SYS_NAND_PAGE_SIZE=0x800
  79CONFIG_SYS_NAND_OOBSIZE=0x40
  80CONFIG_SYS_NAND_U_BOOT_LOCATIONS=y
  81CONFIG_SYS_NAND_U_BOOT_OFFS=0x20000
  82CONFIG_DM_SPI_FLASH=y
  83CONFIG_SPI_FLASH_STMICRO=y
  84CONFIG_MACB=y
  85CONFIG_PINCTRL=y
  86CONFIG_PINCTRL_AT91=y
  87CONFIG_SPECIFY_CONSOLE_INDEX=y
  88CONFIG_ATMEL_USART=y
  89CONFIG_WDT=y
  90CONFIG_WDT_AT91=y
  91CONFIG_HEXDUMP=y
  92