#!/bin/bash -eux
case $ARCH in
    ppc64el|powerpc)
        ;;
    *)
        exit 0
        ;;
esac

. /build/config/functions

create_partitions() {
    disk_image="$1"
    apt-get install -qqy gdisk
    sgdisk "${disk_image}" \
        --zap-all
    sgdisk "${disk_image}" \
        --new=2::+8M \
        --new=1:
    sgdisk "${disk_image}" -t 2:4100
    sgdisk "${disk_image}" \
        --print
}

install_grub() {
    mkdir mountpoint
    mount_partition "${rootfs_dev_mapper}" mountpoint

    chroot mountpoint apt-get -qqy update
    chroot mountpoint apt-get -qqy install grub2
    chroot mountpoint apt-get -qqy remove --purge grub-legacy-ec2

    # set the kernel commandline to use hvc0
    mkdir -p mountpoint/etc/default/grub.d
    cat << EOF > mountpoint/etc/default/grub.d/50-cloudimg-settings.cfg
${CLOUD_IMG_STR}

# Set the recordfail timeout
GRUB_RECORDFAIL_TIMEOUT=0

# Do not wait on grub prompt
GRUB_TIMEOUT=0

# Set the default commandline
GRUB_CMDLINE_LINUX_DEFAULT="console=hvc0 earlyprintk"
EOF
    prep_partition="/dev/mapper${loop_device///dev/}p2"
    chroot mountpoint grub-install "${prep_partition}" \
        --no-nvram \
        --boot-directory=/boot \
        --target=powerpc-ieee1275

    chroot mountpoint dpkg-divert --local --rename /etc/grub.d/30_os-prober
    chroot mountpoint update-grub
    sed -i "s,root=.* ,root=LABEL=cloudimg-rootfs ,g" mountpoint/boot/grub/grub.cfg
    chroot mountpoint dpkg-divert --remove --local --rename /etc/grub.d/30_os-prober

    umount_partition mountpoint
    rmdir mountpoint
}

disk_image=binary/boot/disk.ext4

create_empty_disk_image "${disk_image}"
create_partitions "${disk_image}"
mount_image "${disk_image}" 1

# Copy the chroot in to the disk
make_ext4_partition "${rootfs_dev_mapper}"
mkdir mountpoint
mount "${rootfs_dev_mapper}" mountpoint
cp -a chroot/* mountpoint/
umount mountpoint
rmdir mountpoint

install_grub

clean_loops
trap - EXIT