BOARD_TYPE=ark1668e_devb BOOTSTRAP_DIR=ark1668e_devb UBOOT_CONFIG_FILE=ark1668e_devb_defconfig LINUX_CONFIG_FILE=ark1668e_devb_defconfig BR_CONFIG_FILE=ark1668e_devb_defconfig DTB_FILE_NAME=ark1668e_devb.dtb BR_DIR=buildroot-2021.02.2
