BOARD_TYPE=ark1668e_c281 BOOTSTRAP_DIR=ark1668e_devb UBOOT_CONFIG_FILE=ark1668e_c281_defconfig LINUX_CONFIG_FILE=ark1668e_c281_defconfig BR_CONFIG_FILE=ark1668e_c281_defconfig DTB_FILE_NAME=ark1668e_c281.dtb BR_DIR=buildroot-2021.02.2
