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bootloader: clean up EFI checking

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The check removed here came in with
I4481b43e4a8fe4144be9c7eb9d9c618bbb2df21e a long time ago.  At that
time we were not building EFI images, and were building i386 images;
both of which are now untrue.

We can simplify this now by merging it into the gpt/mbr path.  If we
are in there we know that we should set --target=i386-pc for BIOS
boot.  For sanity check that we are x86 in this path -- PPC is handled
separately (although it's probably bit-rotted) and ARM64 is EFI.

Change-Id: Ie9839c9adc642b0dd688bced3faa46e9314e9799
Co-Authored-By: Clark Boylan <clark.boylan@gmail.com>
This commit is contained in:
Ian Wienand 2022-02-22 10:13:07 +11:00
parent 0b48d74322
commit 7f98cfbcf7
1 changed files with 6 additions and 17 deletions
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23
diskimage_builder/elements/bootloader/finalise.d/50-bootloader
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@ -87,22 +87,6 @@ fi
# root partition of a block device.
GRUB_OPTS="--force "
# /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
# * this check is only valid for x86_64; other platforms we support
# are either not EFI (ppc) or always EFI (arm64)
if [[ "x86_64 amd64" =~ ${ARCH} ]]; then
if [[ -d /sys/firmware/efi && ! -d /usr/lib/grub/x86_64-efi ]]; then
GRUB_OPTS="$GRUB_OPTS --target=i386-pc"
fi
fi
if [[ "$ARCH" =~ "ppc" ]] ; then
# For PPC (64-Bit regardless of Endian-ness), we use the "boot"
# partition as the one to point grub-install to, not the loopback
@ -113,8 +97,13 @@ if [[ "$ARCH" =~ "ppc" ]] ; then
else
# This set of modules is sufficient for all installs (mbr/gpt/efi)
modules="part_msdos part_gpt lvm"
if [[ ${DIB_BLOCK_DEVICE} == "mbr" || ${DIB_BLOCK_DEVICE} == "gpt" ]]; then
$GRUBNAME --modules="$modules biosdisk" $GRUB_OPTS $BOOT_DEV
if [[ ! "x86_64 amd64" =~ ${ARCH} ]]; then
echo "*** ${ARCH} is not supported by mbr/gpt"
fi
$GRUBNAME --modules="$modules biosdisk" --target=i386-pc \
$GRUB_OPTS $BOOT_DEV
elif [[ ${DIB_BLOCK_DEVICE} == "efi" ]]; then
# We need to manually set the target if it's different to
# the host. Setup for EFI