1BR2_nds32=y 2BR2_GLOBAL_PATCH_DIR="board/andes/patches/" 3BR2_TOOLCHAIN_EXTERNAL=y 4BR2_TOOLCHAIN_EXTERNAL_ANDES_NDS32=y 5BR2_LINUX_KERNEL=y 6BR2_LINUX_KERNEL_CUSTOM_VERSION=y 7BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="4.17" 8BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG=y 9BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="board/andes/ae3xx/ae3xx.fragment" 10BR2_TARGET_ROOTFS_INITRAMFS=y 11