1CONFIG_ARM=y 2CONFIG_TARGET_LS1021AQDS=y 3CONFIG_SYS_EXTRA_OPTIONS="SYS_FSL_DDR4,LPUART" 4# CONFIG_CMD_SETEXPR is not set 5CONFIG_NETDEVICES=y 6CONFIG_E1000=y 7CONFIG_FSL_LPUART=y 8