1CONFIG_ARM=y 2CONFIG_TARGET_LS1021ATWR=y 3CONFIG_DM_SERIAL=y 4CONFIG_DEFAULT_DEVICE_TREE="ls1021a-twr-duart" 5# CONFIG_CMD_SETEXPR is not set 6CONFIG_OF_CONTROL=y 7CONFIG_DM=y 8CONFIG_NETDEVICES=y 9CONFIG_E1000=y 10CONFIG_SYS_NS16550=y 11