inherit image # Add the fstypes we need IMAGE_FSTYPES_append = " tar.bz2 sdimg" # Change this to match your host distro LOSETUP ?= "/sbin/losetup" # Since these need to go in /etc/fstab we can hardcode them # Since the vars are weakly assigned, you can override them from your local.conf LOOPDEV ?= "/dev/loop1" LOOPDEV_BOOT ?= "/dev/loop2" LOOPDEV_FS ?= "/dev/loop3" # Default to 4GiB images SDIMG_SIZE ?= "444" # FS type for rootfs ROOTFSTYPE ?= "ext3" BOOTPARTNAME_beaglebone = "BEAGLE_BONE" BOOTPARTNAME ?= "${MACHINE}" IMAGEDATESTAMP = "${@time.strftime('%Y.%m.%d',time.gmtime())}" # Files and/or directories to be copied into the vfat partition FATPAYLOAD ?= "" IMAGE_CMD_sdimg () { SDIMG=${WORKDIR}/sd.img # sanity check fstab entry for boot partition mounting if [ "x$(cat /etc/fstab | grep ${LOOPDEV_BOOT} | grep ${WORKDIR}/tmp-mnt-boot | grep user || true)" = "x" ]; then echo "/etc/fstab entries need to be created with the user flag for the loop devices like:" echo "${LOOPDEV_BOOT} ${WORKDIR}/tmp-mnt-boot vfat user 0 0" false fi # cleanup loops for loop in ${LOOPDEV} ${LOOPDEV_BOOT} ${LOOPDEV_FS} ; do ${LOSETUP} -d $loop || true done # If an SD image is already present, reuse and reformat it if [ ! -e ${SDIMG} ] ; then dd if=/dev/zero of=${SDIMG} bs=$(echo '255 * 63 * 512' | bc) count=${SDIMG_SIZE} fi ${LOSETUP} ${LOOPDEV} ${SDIMG} # Create partition table dd if=/dev/zero of=${LOOPDEV} bs=1024 count=1024 SIZE=$(/sbin/fdisk -l ${LOOPDEV} | grep Disk | grep bytes | awk '{print $5}') CYLINDERS=$(echo $SIZE/255/63/512 | bc) { echo ,9,0x0C,* echo ,,,- } | /sbin/sfdisk -D -H 255 -S 63 -C ${CYLINDERS} ${LOOPDEV} # Prepare loop devices for boot and filesystem partitions BOOT_OFFSET=32256 FS_OFFSET_SECT=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /"|cut -d " " -f 2) FS_OFFSET=$(echo "$FS_OFFSET_SECT * 512" | bc) FS_SIZE_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /g" \ |cut -d " " -f 4 | cut -d "+" -f 1) LOOPDEV_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep FAT | perl -p -i -e "s/\s+/ /g"|cut -d " " -f 5) LOOPDEV_BYTES=$(echo "$LOOPDEV_BLOCKS * 1024" | bc) ${LOSETUP} -d ${LOOPDEV} ${LOSETUP} ${LOOPDEV_BOOT} ${SDIMG} -o ${BOOT_OFFSET} /sbin/mkfs.vfat ${LOOPDEV_BOOT} -n ${BOOTPARTNAME} $LOOPDEV_BLOCKS # Prepare filesystem partition # Copy ubi used by flashing scripts if [ -e ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ] ; then echo "Copying UBIFS image to file system" cp ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ${IMAGE_ROOTFS}/boot/fs.ubi fi # Prepare boot partion. First mount the boot partition, and copy the boot loader and supporting files # from the root filesystem mkdir -p ${WORKDIR}/tmp-mnt-boot mount $LOOPDEV_BOOT ${WORKDIR}/tmp-mnt-boot echo "Copying bootloaders into the boot partition" if [ -e ${IMAGE_ROOTFS}/boot/MLO ] ; then cp -v ${IMAGE_ROOTFS}/boot/MLO ${WORKDIR}/tmp-mnt-boot else cp -v ${DEPLOY_DIR_IMAGE}/MLO ${WORKDIR}/tmp-mnt-boot fi # Check for u-boot SPL if [ -e ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.img ] ; then suffix=img else suffix=bin fi cp -v ${IMAGE_ROOTFS}/boot/uEnv.txt ${WORKDIR}/tmp-mnt-boot || true cp -v ${IMAGE_ROOTFS}/boot/user.txt ${WORKDIR}/tmp-mnt-boot || true if [ -e ${IMAGE_ROOTFS}/boot/u-boot.$suffix ] ; then cp -v ${IMAGE_ROOTFS}/boot/{u-boot.$suffix} ${WORKDIR}/tmp-mnt-boot || true else cp -v ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.$suffix ${WORKDIR}/tmp-mnt-boot/u-boot.$suffix fi if [ -n ${FATPAYLOAD} ] ; then echo "Copying payload into VFAT" for entry in ${FATPAYLOAD} ; do # add the || true to stop aborting on vfat issues like not supporting .~lock files cp -av ${IMAGE_ROOTFS}$entry ${WORKDIR}/tmp-mnt-boot || true done fi # Cleanup VFAT mount echo "Cleaning up VFAT mount" umount ${WORKDIR}/tmp-mnt-boot ${LOSETUP} -d ${LOOPDEV_BOOT} || true # Prepare rootfs parition echo "Creating rootfs loopback" ${LOSETUP} ${LOOPDEV_FS} ${SDIMG} -o ${FS_OFFSET} # should use fdisk info echo "Creating rootfs image" touch ${WORKDIR}/${IMAGE_NAME}.rootfs.img FS_NUM_INODES=$(echo $FS_SIZE_BLOCKS / 4 | bc) case "${ROOTFSTYPE}" in ext3) genext2fs -z -N $FS_NUM_INODES -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.img tune2fs -L ${IMAGE_NAME} -j ${WORKDIR}/${IMAGE_NAME}.rootfs.img ;; ext4) genext2fs -z -N $FS_NUM_INODES -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.img tune2fs -L ${IMAGE_NAME} -j -O extents,uninit_bg,dir_index ${WORKDIR}/${IMAGE_NAME}.rootfs.img ;; *) echo "Please set ROOTFSTYPE to something supported" exit 1 ;; esac dd if=${WORKDIR}/${IMAGE_NAME}.rootfs.img of=${LOOPDEV_FS} ${LOSETUP} -d ${LOOPDEV_FS} || true gzip -c ${WORKDIR}/sd.img > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}-${IMAGEDATESTAMP}.img.gz rm -f ${WORKDIR}/sd.img }