1CONFIG_ARM=y 2CONFIG_TARGET_VF610TWR=y 3CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/vf610twr/imximage.cfg,ENV_IS_IN_MMC" 4CONFIG_NAND_VF610_NFC=y 5CONFIG_SYS_NAND_BUSWIDTH_16BIT=y 6