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116 | # create a clean chroot
debootstrap --variant=minbase $LB_DISTRIBUTION chroot $LB_PARENT_MIRROR_BOOTSTRAP
for devarch in $subarches; do
(echo "I: creating $devarch device tarball for $ARCH"
HERE="$(pwd)"
set -x
linux_package="linux-$devarch"
case $ARCH in
amd64)
linux_package="linux-signed-generic"
;;
esac
# make sure all virtual filesystems are available
lb chroot_proc install "$@"
lb chroot_sysfs install "$@"
lb chroot_devpts install "$@"
# prepare the env
Chroot chroot "apt-get -y update"
Chroot chroot "apt-get -y purge linux-image-*"
Chroot chroot "apt-get -y autoremove"
rm -rf chroot/boot/initrd.img* chroot/boot/vmlinu?-* chroot/lib/modules/* \
chroot/boot/abi-* chroot/boot/System.map-* chroot/boot/config-*
mkdir -p chroot/etc/initramfs-tools/conf.d
echo "COMPRESS=lzma" >chroot/etc/initramfs-tools/conf.d/snappy-device-tarball.conf
# install needed packages and the kernel itself
Chroot chroot "apt-get -y install initramfs-tools-ubuntu-core linux-firmware xz-utils"
Chroot chroot "apt-get -y install $linux_package"
# clean up
lb chroot_devpts remove "$@"
lb chroot_sysfs remove "$@"
lb chroot_proc remove "$@"
# now build the actual device tarball
TMPDIR="$(mktemp -d)"
mkdir -p $TMPDIR/system/
mkdir -p $TMPDIR/assets/
cd chroot
cp -ar --parent lib/modules/ $TMPDIR/system/
cp -ar --parent lib/firmware/ $TMPDIR/system/
# new assets handling
if [ -f boot/vmlinu?-*.signed ]; then
kernel=boot/vmlinu?-*.signed
else
kernel=boot/vmlinu?-*
fi
initrd=boot/initrd.img-*
cp -ar $initrd $TMPDIR/assets/
cp -ar $kernel $TMPDIR/assets/
cp -ar boot/abi-* boot/System.map-* boot/config-* $TMPDIR/assets/
dtbs=$(find lib/firmware -type d -name 'device-tree' -print0)
if [ -n "$dtbs" ]; then
mv "$dtbs" $TMPDIR/assets/dtbs
case $devarch in
raspi2)
# ubuntu-device-flash does not like subdirs here, we need to tar it up
if [ -e $TMPDIR/assets/dtbs/overlays ]; then
tar -C $TMPDIR/assets/dtbs -f $TMPDIR/assets/dtbs/overlays.tgz -czv overlays
rm -rf $TMPDIR/assets/dtbs/overlays
fi
;;
esac
fi
# create hardware.yaml
# this assumes armhf == u-boot
# and all others grub
# common bits
cat > $TMPDIR/hardware.yaml << EOF
kernel: assets/$(basename $kernel)
initrd: assets/$(basename $initrd)
partition-layout: system-AB
EOF
# arch specific ones
if [ "$ARCH" = "armhf" ]; then
cat >> $TMPDIR/hardware.yaml << EOF
dtbs: assets/dtbs
bootloader: u-boot
EOF
else
cat >> $TMPDIR/hardware.yaml << EOF
bootloader: grub
EOF
fi
# compress everything
cd $TMPDIR
tarname="device.tar.gz"
if [ "$devarch" = "raspi2" ];then
tarname="raspi2.$tarname"
fi
tar -c -z -f $HERE/$PREFIX.$tarname system assets hardware.yaml
# show size of initrd and kernel in the log
ls -lh assets/
# dump the content list into the log
echo "I: device tarball contents for $PREFIX.$tarname:"
find . -type f
# azure wants its own device tarball
if [ "$ARCH" = "amd64" ]; then
cp $HERE/$PREFIX.$tarname $HERE/$PREFIX.azure.$tarname
fi
cd $HERE)
done
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