1CONFIG_ARM=y 2CONFIG_ARCH_SUNXI=y 3CONFIG_MACH_SUN4I=y 4CONFIG_DRAM_CLK=408 5CONFIG_DEFAULT_DEVICE_TREE="sun4i-a10-pcduino" 6CONFIG_SPL=y 7CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER,SUNXI_EMAC,USB_EHCI" 8