#!/bin/bash

make_qcow() {
    export ROOTFS_BUILD_NUMBER=`wget -q --no-check-certificate -O - https://ci.linaro.org/jenkins/job/ubuntu-armhf-rootfs/label=build,rootfs=nano-lava/lastSuccessfulBuild/buildNumber`
    export ROOTFS_BUILD_TIMESTAMP=`wget -q --no-check-certificate -O - https://ci.linaro.org/jenkins/job/ubuntu-armhf-rootfs/label=build,rootfs=nano-lava/lastSuccessfulBuild/buildTimestamp?format=yyyyMMdd`
    export ROOTFS_BUILD_URL="http://snapshots.linaro.org/ubuntu/images/nano-lava/${ROOTFS_BUILD_NUMBER}/linaro-trustry-nano-lava-${ROOTFS_BUILD_TIMESTAMP}-${ROOTFS_BUILD_NUMBER}.tar.gz"
    wget --progress=dot -e dotbytes=2M ${ROOTFS_BUILD_URL}
    dd if=/dev/zero of=kvm.raw bs=1024 seek=1M count=0
    parted --script kvm.raw mklabel msdos
    parted --script kvm.raw mkpart p fat32 1 50
    parted --script  -- kvm.raw mkpart p ext4 51 -0
    set +e
    sudo kpartx -a kvm.raw
    sudo mkfs.vfat /dev/mapper/loop0p1
    sudo mkfs.ext4 /dev/mapper/loop0p2
    sudo mount /dev/mapper/loop0p2 /mnt/
    sudo tar xaf linaro-trustry-nano-lava-${ROOTFS_BUILD_TIMESTAMP}-${ROOTFS_BUILD_NUMBER}.tar.gz -C /mnt --strip-components=1
    rm linaro-trustry-nano-lava-${ROOTFS_BUILD_TIMESTAMP}-${ROOTFS_BUILD_NUMBER}.tar.gz
cat > interfaces << EOF
# hack By riku 15.1.2014 in jenkins-vexpress-commands.sh
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet dhcp
EOF
sudo cp interfaces /mnt/etc/network/
    sudo umount /mnt
    sudo kpartx -d kvm.raw
    set -e # ensure proper teardown
    qemu-img convert -f raw -O qcow2 kvm.raw kvm.qcow2
    gzip -9 kvm.qcow2
}

set -e
sudo apt-get update
sudo apt-get install -y qemu-utils kpartx
rm -rf lci-build-tools builddir-*
rm -f *deb *.gz kvm.raw

git clone https://git.linaro.org/ci/lci-build-tools.git

# Build KVM kernel for vexpress
export kernel_config="kvm_guest_defconfig"
export make_deb="false"
export MAKE_DTBS="true"

# jenkins needs a different directory for build due to git juggling
if [ ! -z ${WORKSPACE} ]
then
    export WORKSPACE=${WORKSPACE}/build
fi
./lci-build-tools/jenkins_kernel_build_inst

cp ./builddir-*/arch/arm/boot/zImage .
cp ./builddir-*/arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dtb .

make_qcow

cat << EOF > BUILD-INFO.txt
Format-Version: 0.1

Files-Pattern: *
License-Type: open
EOF