BOARD_TYPE=ark1668ed_devb_emmc
BOOTSTRAP_DIR=ark1668ed_board
UBOOT_CONFIG_FILE=ark1668ed_devb_emmc_defconfig
LINUX_CONFIG_FILE=ark1668ed_devb_emmc_defconfig
BR_CONFIG_FILE=ark1668ed_devb_emmc_defconfig
DTB_FILE_NAME=ark1668ed_devb_emmc.dtb
TOOLCHAIN_CROSS_COMPILE=arm-none-linux-gnueabihf-