diskimage-builder/diskimage_builder/elements/bootloader/finalise.d/50-bootloader
Yolanda Robla 61e6566c48 Fix bootloader for efi on rhel systems
When building the image on a non-efi environment, it generates
linux16/initrd16 entries. But to boot from UEFI they need to have
linuxefi/initrdefi entries.
Use sed to replace those entries, in case we have an EFI image.

Change-Id: I47c96450e10f34b91bcc32888532bd7ab87cf316
2018-06-19 08:37:30 +02:00

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8.6 KiB
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#!/bin/bash
# Configure grub. Note that the various conditionals here are to handle
# different distributions gracefully.
if [ ${DIB_DEBUG_TRACE:-1} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
BOOT_DEV=$IMAGE_BLOCK_DEVICE
# All available devices, handy for some bootloaders...
declare -A DEVICES
eval DEVICES=( $IMAGE_BLOCK_DEVICES )
function install_extlinux {
install-packages -m bootloader extlinux
echo "Installing Extlinux..."
# Find and install mbr.bin
for MBR in /usr/share/syslinux/mbr.bin /usr/lib/syslinux/mbr.bin \
/usr/lib/extlinux/mbr.bin /usr/lib/EXTLINUX/mbr.bin ; do
if [ -f $MBR ]; then
break
fi
done
if [ ! -f $MBR ]; then
echo "mbr.bin (from EXT/SYSLINUX) not found."
exit 1
fi
dd if=$MBR of=$BOOT_DEV
# Find any pre-created extlinux install directory
for EXTDIR in /boot/extlinux /boot/syslinux ; do
if [ -d $EXTDIR ] ; then
break
fi
done
if [ ! -d $EXTDIR ] ; then
# No install directory found so default to /boot/syslinux
EXTDIR=/boot/syslinux
mkdir -p $EXTDIR
fi
# Finally install extlinux
extlinux --install $EXTDIR
}
function install_grub2 {
# Check for offline installation of grub
if [ -f "/tmp/grub/install" ] ; then
source /tmp/grub/install
# Right now we can't use pkg-map to branch by arch, so tag an
# architecture specific virtual package so we can install the
# rigth thing based on distribution.
elif [[ "$ARCH" =~ "ppc" ]]; then
install-packages -m bootloader grub-ppc64
elif [[ "${DIB_BLOCK_DEVICE}" == "mbr" ||
"${DIB_BLOCK_DEVICE}" == "gpt" ]]; then
install-packages -m bootloader grub-pc
elif [[ "${DIB_BLOCK_DEVICE}" == "efi" ]]; then
install-packages -m bootloader grub-efi-$ARCH
else
echo "Failure: I'm not sure what bootloader to install"
echo "Ensure you have included a block-device-* element"
exit 1
fi
# XXX: grub-probe on the nbd0/loop0 device returns nothing - workaround, manually
# specify modules. https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1073731
GRUBNAME=$(type -p grub-install) || echo "trying grub2-install"
if [ -z "$GRUBNAME" ]; then
GRUBNAME=$(type -p grub2-install)
fi
# If no GRUB2 is found, fallback to extlinux
if [ -z "$GRUBNAME" ] || [ $($GRUBNAME --version | grep "0.97" | wc -l) -ne 0 ]; then
echo "No GRUB2 found. Fallback to Extlinux..."
install_extlinux
exit 0
fi
echo "Installing GRUB2..."
# We need --force so grub does not fail due to being installed on the
# root partition of a block device.
GRUB_OPTS=${GRUB_OPTS:-"--force"}
# XXX: This is buggy:
# - --target=i386-pc is invalid for non-i386/amd64 architectures
# - and for UEFI too.
# GRUB_OPTS="$GRUB_OPTS --target=i386-pc"
if [[ ! $GRUB_OPTS == *--target* ]] && [[ $($GRUBNAME --version) =~ ' 2.' ]]; then
# /sys/ comes from the host machine. If the host machine is using EFI
# but the image being built doesn't have EFI boot-images installed we
# should set the --target to use a BIOS-based boot-image.
#
# * --target tells grub what's the target platform
# * the boot images are placed in /usr/lib/grub/<cpu>-<platform>
# * i386-pc is used for BIOS-based machines
# http://www.gnu.org/software/grub/manual/grub.html#Installation
#
if [ -d /sys/firmware/efi ]; then
if [ ! -d /usr/lib/grub/*-efi ]; then
case $ARCH in
"x86_64"|"amd64")
GRUB_OPTS="$GRUB_OPTS --target=i386-pc"
;;
"i386")
target=i386-pc
if [ -e /proc/device-tree ]; then
for x in /proc/device-tree/*; do
if [ -e "$x" ]; then
target="i386-ieee1275"
fi
done
fi
GRUB_OPTS="$GRUB_OPTS --target=$target"
;;
esac
fi
fi
fi
if [[ "$ARCH" =~ "ppc" ]] ; then
# For PPC (64-Bit regardless of Endian-ness), we use the "boot"
# partition as the one to point grub-install to, not the loopback
# device. ppc has a dedicated PReP boot partition.
# For grub2 < 2.02~beta3 this needs to be a /dev/mapper/... node after
# that a dev/loopXpN node will work fine.
$GRUBNAME --modules="part_msdos" $GRUB_OPTS ${DEVICES[boot]} --no-nvram
else
# This set of modules is sufficient for all installs (mbr/gpt/efi)
modules="part_msdos part_gpt lvm"
extra_options=""
if [[ ${DIB_BLOCK_DEVICE} == "mbr" || ${DIB_BLOCK_DEVICE} == "gpt" ]]; then
modules="$modules biosdisk"
elif [[ ${DIB_BLOCK_DEVICE} == "efi" ]]; then
# This tells the EFI install to put the EFI binaries into
# the generic /BOOT directory and avoids trying to update
# nvram settings.
extra_options="--removable"
# We need to manually set the target if it's different to
# the host. Setup for EFI
case $ARCH in
"x86_64"|"amd64")
GRUB_OPTS="--target=x86_64-efi"
;;
# At this point, we don't need to override the target
# for any other architectures.
esac
fi
$GRUBNAME --modules="$modules" $extra_options $GRUB_OPTS $BOOT_DEV
fi
# This might be better factored out into a per-distro 'install-bootblock'
# helper.
if [ -d /boot/grub2 ]; then
GRUB_CFG=/boot/grub2/grub.cfg
elif [ -d /boot/grub ]; then
GRUB_CFG=/boot/grub/grub.cfg
fi
# Override the root device to the default label, and disable uuid
# lookup.
echo "GRUB_DEVICE=LABEL=${DIB_ROOT_LABEL}" >> /etc/default/grub
echo 'GRUB_DISABLE_LINUX_UUID=true' >> /etc/default/grub
echo "GRUB_TIMEOUT=${DIB_GRUB_TIMEOUT:-5}" >>/etc/default/grub
echo 'GRUB_TERMINAL="serial console"' >>/etc/default/grub
echo 'GRUB_GFXPAYLOAD_LINUX=auto' >>/etc/default/grub
# Serial console on Power is hvc0
if [[ "powerpc ppc64 ppc64le" =~ "$ARCH" ]]; then
SERIAL_CONSOLE="hvc0"
elif [[ "arm64" =~ "$ARCH" ]]; then
SERIAL_CONSOLE="ttyAMA0,115200"
else
SERIAL_CONSOLE="ttyS0,115200"
fi
GRUB_CMDLINE_LINUX_DEFAULT="console=tty0 console=${SERIAL_CONSOLE} no_timer_check"
echo "GRUB_CMDLINE_LINUX_DEFAULT=\"${GRUB_CMDLINE_LINUX_DEFAULT}\"" >>/etc/default/grub
echo 'GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"' >>/etc/default/grub
sed -i -e "s/\(^GRUB_CMDLINE_LINUX.*\)\"$/\1 ${DIB_BOOTLOADER_DEFAULT_CMDLINE}\"/" /etc/default/grub
if type grub2-mkconfig >/dev/null; then
GRUB_MKCONFIG="grub2-mkconfig -o $GRUB_CFG"
else
GRUB_MKCONFIG="grub-mkconfig -o $GRUB_CFG"
fi
# os-prober leaks /dev/sda into config file in dual-boot host
# Disable grub-os-prober to avoid the issue while running
# grub-mkconfig
# Setting a flag to track whether the entry is already there in grub config
PROBER_DISABLED=
if ! grep -qe "^\s*GRUB_DISABLE_OS_PROBER=true" /etc/default/grub; then
PROBER_DISABLED=true
echo 'GRUB_DISABLE_OS_PROBER=true' >> /etc/default/grub
fi
$GRUB_MKCONFIG
# Remove the fix to disable os_prober
if [ -n "$PROBER_DISABLED" ]; then
sed -i '$d' /etc/default/grub
fi
# grub-mkconfig generates a config with the device in it,
# This shouldn't be needed, but old code has bugs
DIB_RELEASE=${DIB_RELEASE:-}
if [ "$DIB_RELEASE" = 'wheezy' ]; then
sed -i "s%search --no.*%%" $GRUB_CFG
sed -i "s%set root=.*%set root=(hd0,1)%" $GRUB_CFG
fi
# Fix efi specific instructions in grub config file
if [ -d /sys/firmware/efi ]; then
sed -i 's%\(initrd\|linux\)efi /boot%\1 /boot%g' $GRUB_CFG
fi
# when using efi, and having linux16/initrd16, it needs to be replaced
# by linuxefi/initrdefi. When building images on a non-efi system,
# the 16 suffix is added to linux/initrd entries, but we need it to be
# linuxefi/initrdefi for the image to boot under efi
if [[ ${DIB_BLOCK_DEVICE} == "efi" ]]; then
sed -i 's%\(linux\|initrd\)16 /boot%\1efi /boot%g' $GRUB_CFG
fi
}
DIB_EXTLINUX=${DIB_EXTLINUX:-0}
if [ "$DIB_EXTLINUX" != "0" ]; then
install_extlinux
else
install_grub2
fi