1CONFIG_SPL=y 2CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER,SUNXI_EMAC,USB_EHCI" 3CONFIG_DEFAULT_DEVICE_TREE="sun4i-a10-pcduino" 4CONFIG_ARM=y 5CONFIG_ARCH_SUNXI=y 6CONFIG_MACH_SUN4I=y 7CONFIG_DRAM_CLK=408 8CONFIG_DRAM_ZQ=123 9CONFIG_DRAM_EMR1=0 10