1CONFIG_ARM=y 2CONFIG_TARGET_LS1021ATWR=y 3CONFIG_SPL=y 4CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT_PBL,SPL_FSL_PBL,SD_BOOT" 5CONFIG_NETDEVICES=y 6CONFIG_E1000=y 7CONFIG_SYS_NS16550=y 8