root.sh 4.92 KB
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#!/bin/bash
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#
# Copyright (C) 2017 Purism SPC
#
# SPDX-License-Identifier: GPL-3.0+
#
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# distro and basedir set by calling script 
basedir=$1
image_name=$2
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cwd=`pwd`
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qemu="${basedir}/usr/bin/qemu-arm-static"
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if [ -z ${distro} ]; then
    echo "Must pass in \$distro via the environment" 1>&2
    exit 1
fi

if [ -z ${pureos_board} ]; then
    echo "Must pass in \$pureos_board via the environment" 1>&2
    exit 1
fi

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if [ -z ${packages} ]; then
    echo "Must pass in \$packages via the environment" 1>&2
    exit 1
fi

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set -e
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set -u
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mirror=deb.debian.org
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echo "Configuring ${distro} in ${basedir} for board ${pureos_board}"

case ${pureos_board} in 
  imx5)
    fdt_file=imx53-qsb.dtb
    ;;
  imx6)
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    fdt_file=imx6qp-nitrogen6_max_purism.dtb
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    ;;
  imx8)
    echo "board type ${pureos_board} not configured yet"
    ;;
  qemu)
    echo "board type ${pureos_board} not configured yet"
    exit 1
    ;;
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  *)
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    echo "unrecognized board type ${pureos_board}"
    exit 1
    ;;
esac
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# bindmount qemu into the rootfs so we can chroot into it if needed
function setup_qemu()
{
    [ -f ${qemu} ] || cp /usr/bin/qemu-arm-static "${qemu}"
}


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function setup_kernel()
{
    local link="$(basename $basedir/boot/vmlinuz-*)"
    rm -f "${basedir}/boot/zImage"
    ln -s "${link}" "${basedir}/boot/zImage"

    mkdir -p "${basedir}/boot/dtbs"
    cp "${basedir}"/usr/lib/linux-image-*/${fdt_file} "${basedir}/boot/dtbs/"
}


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function setup_uboot()
{
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    sed -e "s/##DTBNAME##/${fdt_file}/" files/boot-${pureos_board}.txt.in > $basedir/boot/boot.txt
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    mkimage -A arm -T script -O linux -d $basedir/boot/boot.txt $basedir/boot.scr
    ln -fs /boot.scr $basedir/6x_bootscript
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    [ ! -d files/uboot-${pureos_board} ] || cp -a files/uboot-${pureos_board}/* $basedir
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}


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function unmount_binds()
{
    umount $basedir/dev/pts
    umount $basedir/dev
    umount $basedir/sys
    umount $basedir/proc
}


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function setup_gui()
{
    # Allow purism user to launch weston from the console
    chroot $basedir adduser purism weston-launch
}

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# We have to do this because task packages don't work with debootstrap
# (and won't).  See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=841649
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# other packages are better installed late to not confuse deboostrap about
# systemd and systemd-shim (e.g. libpam-systemd)
function install_pkgs()
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{
    # Inspired by https://linux-sunxi.org/Mainline_Debian_HowTo
    mount -t proc chproc $basedir/proc
    mount -t sysfs chsys $basedir/sys
    mount -t devtmpfs chdev $basedir/dev || mount --bind /dev $basedir/dev
    mount -t devpts chpts $basedir/dev/pts
    echo -e '#!/bin/sh\nexit 101' > $basedir/usr/sbin/policy-rc.d
    chmod 755 $basedir/usr/sbin/policy-rc.d
    mv $basedir/etc/resolv.conf $basedir/etc/resolv.conf.bak
    cp /etc/resolv.conf $basedir/etc

    (
        export DEBIAN_FRONTEND=noninteractive
        export DEBCONF_NONINTERACTIVE_SEEN=true
        export LC_ALL=C
        export LANGUAGE=C
        export LANG=C

        chroot $basedir apt-get -y update
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        chroot $basedir apt-get -y install $packages
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    )

    rm $basedir/etc/resolv.conf
    mv $basedir/etc/resolv.conf.bak $basedir/etc/resolv.conf
    rm $basedir/usr/sbin/policy-rc.d
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    unmount_binds
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}

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function cleanup () {
    unmount_binds
}


trap cleanup ERR

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# create the directories so that this script can be tested without the generated filesystem
mkdir -p $basedir/etc/apt/apt.conf.d/
mkdir -p $basedir/etc/network

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cat << EOF > $basedir/etc/apt/sources.list
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deb http://$mirror/debian $distro main contrib non-free
deb-src http://$mirror/debian $distro main contrib non-free
deb http://$mirror/debian $distro-updates main contrib non-free
deb-src http://$mirror/debian $distro-updates main contrib non-free
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deb http://security.debian.org/debian-security $distro/updates main contrib non-free
deb-src http://security.debian.org/debian-security $distro/updates main contrib non-free
EOF

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cat << EOT > $basedir/etc/apt/apt.conf.d/71-no-recommends
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	APT::Install-Recommends "0";
	APT::Install-Suggests "0";
EOT

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echo "pureos" > $basedir/etc/hostname
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cat << EOF > $basedir/etc/hosts
127.0.0.1       pureos   localhost
::1             localhost ip6-localhost ip6-loopback
fe00::0         ip6-localnet
ff00::0         ip6-mcastprefix
ff02::1         ip6-allnodes
ff02::2         ip6-allrouters
EOF

cat << EOF > $basedir/etc/network/interfaces
auto lo
iface lo inet loopback
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allow-hotplug eth0
iface eth0 inet dhcp
EOF

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# Don't setup resolv.conf if it's a symlink
# DHCP will later handle this just fine
if [ -f $basedir/etc/resolv.conf ]; then
    cat <<EOF > $basedir/etc/resolv.conf
    nameserver 208.67.220.220
    nameserver 208.67.222.222
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EOF
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fi
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export MALLOC_CHECK_=0 # workaround for LP: #520465
export LC_ALL=C
export DEBIAN_FRONTEND=noninteractive

cat << EOF > $basedir/debconf.set
console-common console-data/keymap/policy select Select keymap from full list
console-common console-data/keymap/full select en-latin1-nodeadkeys
EOF
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setup_qemu
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install_pkgs
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setup_kernel
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setup_uboot
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setup_gui