1CONFIG_ARM=y 2CONFIG_TARGET_MX28EVK=y 3CONFIG_SPL=y 4CONFIG_SYS_EXTRA_OPTIONS="MXS_AUART,MXS_AUART_BASE=MXS_UARTAPP3_BASE,ENV_IS_IN_MMC" 5CONFIG_CMD_SETEXPR=y 6CONFIG_CMD_NET=y 7CONFIG_SPI_FLASH=y 8