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sdcard_image bbclass: make it work with older losetup versions among other things
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
This commit is contained in:
Koen Kooi
@@ -1,45 +1,62 @@
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inherit image
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# Add the fstypes we need
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IMAGE_FSTYPES_append = " tar.bz2 sdimg"
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# Change this to match your host distro
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LOSETUP ?= "/sbin/losetup"
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# Since these need to go in /etc/fstab we can hardcode them
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LOOPDEV ?= "/dev/loop1"
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LOOPDEV_BOOT ?= "/dev/loop2"
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LOOPDEV_FS ?= "/dev/loop3"
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IMAGE_CMD_sdimg () {
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SDIMG=${WORKDIR}/sd.img
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# sanity check fstab entry for boot partition mounting
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if [ "x$(cat /etc/fstab | grep ${LOOPDEV_BOOT} | grep ${WORKDIR}/tmp-mnt-boot | grep user || true)" = "x" ]; then
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echo "/etc/fstab entries need to be created with the user flag for the loop devices like:"
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echo "${LOOPDEV_BOOT} ${WORKDIR}/tmp-mnt-boot msdos user 0 0"
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false
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fi
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# cleanup loops
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for loop in $(losetup -j ${SDIMG}); do
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loop_dev=$(echo $loop|cut -d ":" -f 1)
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umount $loop_dev || true
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losetup -d $loop_dev || true
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for loop in ${LOOPDEV} ${LOOPDEV_BOOT} ${LOOPDEV_FS} ; do
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${LOSETUP} -d $loop || true
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done
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dd if=/dev/zero of=${SDIMG} bs=$(echo '255 * 63 * 512' | bc) count=444
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losetup -f ${SDIMG}
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LOOPDEV=$(losetup -j ${SDIMG} -o 0 | cut -d ":" -f 1)
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# If an SD image is already present, reuse and reformat it
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if [ ! -e ${SDIMG} ] ; then
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dd if=/dev/zero of=${SDIMG} bs=$(echo '255 * 63 * 512' | bc) count=444
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fi
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${LOSETUP} ${LOOPDEV} ${SDIMG}
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# Create partition table
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#dd if=/dev/zero of=${LOOPDEV} bs=1024 count=1024
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SIZE=`fdisk -l ${LOOPDEV} | grep Disk | grep bytes | awk '{print $5}'`
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CYLINDERS=`echo $SIZE/255/63/512 | bc`
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dd if=/dev/zero of=${LOOPDEV} bs=1024 count=1024
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SIZE=$(/sbin/fdisk -l ${LOOPDEV} | grep Disk | grep bytes | awk '{print $5}')
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CYLINDERS=$(echo $SIZE/255/63/512 | bc)
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{
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echo ,9,0x0C,*
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echo ,,,-
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} | sfdisk -D -H 255 -S 63 -C ${CYLINDERS} ${LOOPDEV}
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} | /sbin/sfdisk -D -H 255 -S 63 -C ${CYLINDERS} ${LOOPDEV}
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# Prepare loop devices for boot and filesystem partitions
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BOOT_OFFSET=32256
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FS_OFFSET_SECT=$(/sbin/fdisk -l -u $LOOPDEV 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /"|cut -d " " -f 2)
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FS_OFFSET_SECT=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /"|cut -d " " -f 2)
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FS_OFFSET=$(echo "$FS_OFFSET_SECT * 512" | bc)
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FS_SIZE_BLOCKS=$(/sbin/fdisk -l -u $LOOPDEV 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /g" \
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FS_SIZE_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep Linux | perl -p -i -e "s/\s+/ /g" \
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|cut -d " " -f 4 | cut -d "+" -f 1)
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LOOPDEV_BLOCKS=$(/sbin/fdisk -l -u $LOOPDEV 2>&1 | grep FAT | perl -p -i -e "s/\s+/ /g"|cut -d " " -f 5)
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LOOPDEV_BLOCKS=$(/sbin/fdisk -l -u ${LOOPDEV} 2>&1 | grep FAT | perl -p -i -e "s/\s+/ /g"|cut -d " " -f 5)
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LOOPDEV_BYTES=$(echo "$LOOPDEV_BLOCKS * 1024" | bc)
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losetup -f ${SDIMG} -o ${BOOT_OFFSET} --sizelimit=$LOOPDEV_BYTES
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${LOSETUP} -d ${LOOPDEV}
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LOOPDEV_BOOT=$(losetup -j ${SDIMG} -o ${BOOT_OFFSET} | cut -d ":" -f 1)
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mkfs.msdos ${LOOPDEV_BOOT} -n boot
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${LOSETUP} ${LOOPDEV_BOOT} ${SDIMG} -o ${BOOT_OFFSET}
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losetup -f ${SDIMG} -o ${FS_OFFSET}
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LOOPDEV_FS=$(losetup -j ${SDIMG} -o ${FS_OFFSET} | cut -d ":" -f 1)
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/sbin/mkfs.msdos ${LOOPDEV_BOOT} -n boot $LOOPDEV_BLOCKS
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# Prepare filesystem partition
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# Copy ubi used by flashing scripts
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@@ -47,32 +64,59 @@ IMAGE_CMD_sdimg () {
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echo "Copying UBIFS image to file system"
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cp ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ${IMAGE_ROOTFS}/boot/fs.ubi
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fi
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ROOTFS_SIZE="$(du -ks ${IMAGE_ROOTFS} | awk '{print 65536 + $1}')"
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genext2fs -b ${FS_SIZE_BLOCKS} -d ${IMAGE_ROOTFS} ${LOOPDEV_FS}
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tune2fs -j ${LOOPDEV_FS}
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# Prepare boot partion. First mount the boot partition, and copy the boot loader and supporting files
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# from the root filesystem
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# sanity check fstab entry for boot partition mounting
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if [ "x$(cat /etc/fstab | grep $LOOPDEV_BOOT | grep ${WORKDIR}/tmp-mnt-boot | grep user || true)" = "x" ]; then
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echo "/etc/fstab entries need to be created with the user flag for $LOOPDEV_BOOT like:"
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echo "$LOOPDEV_BOOT ${WORKDIR}/tmp-mnt-boot msdos user 0 0"
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false
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fi
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mkdir -p ${WORKDIR}/tmp-mnt-boot
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mount $LOOPDEV_BOOT
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mount $LOOPDEV_BOOT ${WORKDIR}/tmp-mnt-boot
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echo "Copying bootloaders into the boot partition"
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cp -v ${IMAGE_ROOTFS}/boot/MLO ${WORKDIR}/tmp-mnt-boot
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cp -v ${IMAGE_ROOTFS}/boot/{u-boot.bin,user.txt,uEnv.txt} ${WORKDIR}/tmp-mnt-boot || true
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if [ -e ${IMAGE_ROOTFS}/boot/MLO ] ; then
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cp -v ${IMAGE_ROOTFS}/boot/MLO ${WORKDIR}/tmp-mnt-boot
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else
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cp -v ${DEPLOY_DIR_IMAGE}/MLO ${WORKDIR}/tmp-mnt-boot
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fi
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# cleanup
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umount ${LOOPDEV_BOOT}
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/sbin/losetup -d ${LOOPDEV}
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/sbin/losetup -d ${LOOPDEV_BOOT}
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/sbin/losetup -d ${LOOPDEV_FS}
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# Check for u-boot SPL
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if [ -e ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.img ] ; then
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suffix=img
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else
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suffix=bin
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fi
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if [ -e ${IMAGE_ROOTFS}/boot/u-boot.$suffix ] ; then
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cp -v ${IMAGE_ROOTFS}/boot/{u-boot.$suffix,user.txt,uEnv.txt} ${WORKDIR}/tmp-mnt-boot || true
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else
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cp -v ${DEPLOY_DIR_IMAGE}/u-boot-${MACHINE}.$suffix ${WORKDIR}/tmp-mnt-boot/u-boot.$suffix
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fi
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# Deprecated, u-boot should load it from ext3 instead
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if [ -e ${IMAGE_ROOTFS}/boot/uImage ] ; then
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cp -v ${IMAGE_ROOTFS}/boot/uImage ${WORKDIR}/tmp-mnt-boot
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else
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cp -v ${DEPLOY_DIR_IMAGE}/uImage-${MACHINE}.bin ${WORKDIR}/tmp-mnt-boot/uImage
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fi
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# Cleanup VFAT mount
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echo "Cleaning up VFAT mount"
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umount ${WORKDIR}/tmp-mnt-boot
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${LOSETUP} -d ${LOOPDEV_BOOT} || true
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# Prepare ext3 parition
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echo "Creating ext3 loopback"
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${LOSETUP} ${LOOPDEV_FS} ${SDIMG} -o ${FS_OFFSET}
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# should use fdisk info
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echo "Creating ext3 image"
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touch ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
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genext2fs -b $FS_SIZE_BLOCKS -d ${IMAGE_ROOTFS} ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
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tune2fs -L ${IMAGE_NAME} -j ${WORKDIR}/${IMAGE_NAME}.rootfs.ext3
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dd if=${WORKDIR}/${IMAGE_NAME}.rootfs.ext3 of=${LOOPDEV_FS}
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${LOSETUP} -d ${LOOPDEV_FS} || true
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gzip -c ${WORKDIR}/sd.img > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}-${PR}.img.gz
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rm -f ${WORKDIR}/sd.img
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}
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