1BR2_PACKAGE_MTD=y 2BR2_TARGET_ROOTFS_UBI=y 3BR2_TARGET_ROOTFS_UBI_SUBSIZE=2048 4BR2_TARGET_ROOTFS_UBI_OPTS="-v" 5BR2_TARGET_ROOTFS_UBIFS_LEBSIZE=0x1f000 6BR2_TARGET_ROOTFS_UBIFS_OPTS="-F -v" 7