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|
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 msdos 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.msdos ${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
}
|
