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build-rpi.sh
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build-rpi.sh
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#!/bin/bash
set -e
# Install dependencies in host system
apt-get update
apt-get install -y --no-install-recommends ubuntu-keyring ca-certificates debootstrap git qemu-user-static qemu-utils qemu-system-arm binfmt-support parted kpartx rsync dosfstools xz-utils
# Make sure cross-running ARM ELF executables is enabled
update-binfmts --enable
rootdir=$(pwd)
basedir=$(pwd)/artifacts/elementary-rpi
# Free space on rootfs in MiB
free_space="500"
export packages="elementary-minimal elementary-desktop elementary-standard"
export architecture="arm64"
export codename="jammy"
export channel="daily"
version=7.1
YYYYMMDD="$(date +%Y%m%d)"
imagename=elementaryos-$version-$channel-rpi-$YYYYMMDD
mkdir -p "${basedir}"
cd "${basedir}"
# Bootstrap an ubuntu minimal system
debootstrap --foreign --arch $architecture $codename elementary-$architecture http://ports.ubuntu.com/ubuntu-ports
# Add the QEMU emulator for running ARM executables
cp /usr/bin/qemu-arm-static elementary-$architecture/usr/bin/
# Run the second stage of the bootstrap in QEMU
LANG=C chroot elementary-$architecture /debootstrap/debootstrap --second-stage
# Copy Raspberry Pi specific files
cp -r "${rootdir}"/rpi/rootfs/writable/* elementary-${architecture}/
# Add the rest of the ubuntu repos
cat << EOF > elementary-$architecture/etc/apt/sources.list
deb http://ports.ubuntu.com/ubuntu-ports $codename main restricted universe multiverse
deb http://ports.ubuntu.com/ubuntu-ports $codename-updates main restricted universe multiverse
EOF
# Copy in the elementary PPAs/keys/apt config
for f in "${rootdir}"/etc/config/archives/*.list; do cp -- "$f" "elementary-$architecture/etc/apt/sources.list.d/$(basename -- "$f")"; done
for f in "${rootdir}"/etc/config/archives/*.key; do cp -- "$f" "elementary-$architecture/etc/apt/trusted.gpg.d/$(basename -- "$f").asc"; done
for f in "${rootdir}"/etc/config/archives/*.pref; do cp -- "$f" "elementary-$architecture/etc/apt/preferences.d/$(basename -- "$f")"; done
# Set codename/channel in added repos
sed -i "s/@CHANNEL/$channel/" elementary-$architecture/etc/apt/sources.list.d/*.list*
sed -i "s/@BASECODENAME/$codename/" elementary-$architecture/etc/apt/sources.list.d/*.list*
# Set codename in added preferences
sed -i "s/@BASECODENAME/$codename/" elementary-$architecture/etc/apt/preferences.d/*.pref*
echo "elementary" > elementary-$architecture/etc/hostname
cat << EOF > elementary-${architecture}/etc/hosts
127.0.0.1 elementary localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
EOF
# Configure mount points
cat << EOF > elementary-${architecture}/etc/fstab
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc nodev,noexec,nosuid 0 0
LABEL=writable / ext4 defaults 0 0
LABEL=system-boot /boot/firmware vfat defaults 0 1
EOF
export LC_ALL=C
export DEBIAN_FRONTEND=noninteractive
# Config to stop flash-kernel trying to detect the hardware in chroot
export FK_MACHINE=none
mount -t proc proc elementary-$architecture/proc
mount -o bind /dev/ elementary-$architecture/dev/
mount -o bind /dev/pts elementary-$architecture/dev/pts
# Make a third stage that installs all of the metapackages
cat << EOF > elementary-$architecture/third-stage
#!/bin/bash
apt-get update
apt-get --yes upgrade
apt-get --yes install $packages
rm -f /third-stage
EOF
chmod +x elementary-$architecture/third-stage
LANG=C chroot elementary-$architecture /third-stage
# Install Raspberry Pi specific packages
cat << EOF > elementary-$architecture/hardware
#!/bin/bash
# Make a dummy folder for the boot partition so packages install properly,
# we'll recreate it on the actual partition later
mkdir -p /boot/firmware
apt-get --yes install linux-image-raspi linux-firmware-raspi2 pi-bluetooth
# Symlink to workaround bug with Bluetooth driver looking in the wrong place for firmware
ln -s /lib/firmware /etc/firmware
rm -rf /boot/firmware
rm -f hardware
EOF
chmod +x elementary-$architecture/hardware
LANG=C chroot elementary-$architecture /hardware
# Copy in any file overrides
cp -r "${rootdir}"/etc/config/includes.chroot/* elementary-$architecture/
mkdir elementary-$architecture/hooks
cp "${rootdir}"/etc/config/hooks/live/*.chroot elementary-$architecture/hooks
hook_files="elementary-$architecture/hooks/*"
for f in $hook_files
do
base=$(basename "${f}")
LANG=C chroot elementary-$architecture "/hooks/${base}"
done
rm -r "elementary-$architecture/hooks"
# Add a oneshot service to grow the rootfs on first boot
install -m 755 -o root -g root "${rootdir}/rpi/files/resizerootfs" "elementary-$architecture/usr/sbin/resizerootfs"
install -m 644 -o root -g root "${rootdir}/pinebookpro/files/resizerootfs.service" "elementary-$architecture/etc/systemd/system"
mkdir -p "elementary-$architecture/etc/systemd/system/systemd-remount-fs.service.requires/"
ln -s /etc/systemd/system/resizerootfs.service "elementary-$architecture/etc/systemd/system/systemd-remount-fs.service.requires/resizerootfs.service"
# Support for kernel updates on the Pi 400
cat << EOF >> elementary-$architecture/etc/flash-kernel/db
Machine: Raspberry Pi 400 Rev 1.0
Method: pi
Kernel-Flavors: raspi raspi2
DTB-Id: bcm2711-rpi-4-b.dtb
U-Boot-Script-Name: bootscr.rpi
Required-Packages: u-boot-tools
EOF
# Calculate the space to create the image.
root_size=$(du -s -B1K elementary-$architecture | cut -f1)
raw_size=$(($((free_space*1024))+root_size))
# Create the disk and partition it
echo "Creating image file"
# Sometimes fallocate fails if the filesystem or location doesn't support it, fallback to slower dd in this case
if ! fallocate -l "$(echo ${raw_size}Ki | numfmt --from=iec-i --to=si --format=%.1f)" "${basedir}/${imagename}.img"
then
dd if=/dev/zero of="${basedir}/${imagename}.img" bs=1024 count=${raw_size}
fi
parted "${imagename}.img" --script -- mklabel msdos
parted "${imagename}.img" --script -- mkpart primary fat32 0 256
parted "${imagename}.img" --script -- mkpart primary ext4 256 -1
# Set the partition variables
loopdevice=$(losetup -f --show "${basedir}/${imagename}.img")
device=$(kpartx -va "$loopdevice" | sed -E 's/.*(loop[0-9]+)p.*/\1/g' | head -1)
device="/dev/mapper/${device}"
bootp=${device}p1
rootp=${device}p2
# Create file systems
mkfs.vfat -n system-boot "$bootp"
mkfs.ext4 -L writable "$rootp"
# Create the dirs for the partitions and mount them
mkdir -p "${basedir}/bootp" "${basedir}/root"
mount -t vfat "$bootp" "${basedir}/bootp"
mount "$rootp" "${basedir}/root"
mkdir -p elementary-$architecture/boot/firmware
mount -o bind "${basedir}/bootp/" elementary-$architecture/boot/firmware
# Copy Raspberry Pi specific files
cp -r "${rootdir}"/rpi/rootfs/system-boot/* elementary-${architecture}/boot/firmware/
# Copy kernels and firemware to boot partition
cat << EOF > elementary-$architecture/hardware
#!/bin/bash
cp /boot/vmlinuz /boot/firmware/vmlinuz
cp /boot/initrd.img /boot/firmware/initrd.img
# Copy device-tree blobs to fat32 partition
cp -r /lib/firmware/*-raspi/device-tree/broadcom/* /boot/firmware/
cp -r /lib/firmware/*-raspi/device-tree/overlays /boot/firmware/
rm -f hardware
EOF
chmod +x elementary-$architecture/hardware
LANG=C chroot elementary-$architecture /hardware
# Grab some updated firmware from the Raspberry Pi foundation
git clone -b 'stable' --single-branch --depth 1 https://github.com/raspberrypi/firmware raspi-firmware
cp raspi-firmware/boot/*.elf "${basedir}/bootp/"
cp raspi-firmware/boot/*.dat "${basedir}/bootp/"
cp raspi-firmware/boot/bootcode.bin "${basedir}/bootp/"
umount elementary-$architecture/dev/pts
umount elementary-$architecture/dev/
umount elementary-$architecture/proc
umount elementary-$architecture/boot/firmware
echo "Rsyncing rootfs into image file"
rsync -HPavz -q "${basedir}/elementary-$architecture/" "${basedir}/root/"
# Unmount partitions
umount "$bootp"
umount "$rootp"
kpartx -dv "$loopdevice"
losetup -d "$loopdevice"
echo "Compressing ${imagename}.img"
xz -T0 -z "${basedir}/${imagename}.img"
cd "${basedir}"
md5sum "${imagename}.img.xz" | tee "${imagename}.md5.txt"
sha256sum "${imagename}.img.xz" | tee "${imagename}.sha256.txt"
cd "${rootdir}"
KEY="$1"
SECRET="$2"
ENDPOINT="$3"
BUCKET="$4"
IMGPATH="${basedir}"/${imagename}.img.xz
IMGNAME=${channel}-rpi/$(basename "$IMGPATH")
apt-get install -y curl python3 python3-distutils
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python3 get-pip.py
pip install boto3
python3 upload.py "$KEY" "$SECRET" "$ENDPOINT" "$BUCKET" "$IMGPATH" "$IMGNAME" || exit 1
CHECKSUMPATH="${basedir}"/${imagename}.md5.txt
CHECKSUMNAME=${channel}-rpi/$(basename "$CHECKSUMPATH")
python3 upload.py "$KEY" "$SECRET" "$ENDPOINT" "$BUCKET" "$CHECKSUMPATH" "$CHECKSUMNAME" || exit 1
CHECKSUMPATH="${basedir}"/${imagename}.sha256.txt
CHECKSUMNAME=${channel}-rpi/$(basename "$CHECKSUMPATH")
python3 upload.py "$KEY" "$SECRET" "$ENDPOINT" "$BUCKET" "$CHECKSUMPATH" "$CHECKSUMNAME" || exit 1