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templates: Output a menu entry for firmware setup on UEFI FastBoot systems

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The fwsetup command allows to reboot into the EFI firmware setup menu, add
a template to include a menu entry on EFI systems that makes use of that
command to reboot into the EFI firmware settings.

This is useful for users since the hotkey to enter into the EFI setup menu
may not be the same on all systems so users can use the menu entry without
needing to figure out what key needs to be pressed.

Also, if fastboot is enabled in the BIOS then often it is not possible to
enter the firmware setup menu. So the entry is again useful for this case.

Signed-off-by: Steve Langasek <steve.langasek@ubuntu.com>
Signed-off-by: Dimitri John Ledkov <xnox@ubuntu.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Steve Langasek 2020-04-15 12:32:17 +02:00 committed by Daniel Kiper
parent 12341958d2
commit 46d76f8fef
2 changed files with 50 additions and 0 deletions
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6
Makefile.util.def
View file

@ -515,6 +515,12 @@ script = {
installdir = grubconf; installdir = grubconf;
}; };
script = {
name = '30_uefi-firmware';
common = util/grub.d/30_uefi-firmware.in;
installdir = grubconf;
};
script = { script = {
name = '40_custom'; name = '40_custom';
common = util/grub.d/40_custom.in; common = util/grub.d/40_custom.in;

44
util/grub.d/30_uefi-firmware.in Normal file
View file

@ -0,0 +1,44 @@
#! /bin/sh
set -e
# grub-mkconfig helper script.
# Copyright (C) 2020 Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB. If not, see <http://www.gnu.org/licenses/>.
prefix="@prefix@"
exec_prefix="@exec_prefix@"
datarootdir="@datarootdir@"
export TEXTDOMAIN=@PACKAGE@
export TEXTDOMAINDIR="@localedir@"
. "$pkgdatadir/grub-mkconfig_lib"
EFI_VARS_DIR=/sys/firmware/efi/efivars
EFI_GLOBAL_VARIABLE=8be4df61-93ca-11d2-aa0d-00e098032b8c
OS_INDICATIONS="$EFI_VARS_DIR/OsIndicationsSupported-$EFI_GLOBAL_VARIABLE"
if [ -e "$OS_INDICATIONS" ] && \
[ "$(( $(printf 0x%x \'"$(cat $OS_INDICATIONS | cut -b5)"\') & 1 ))" = 1 ]; then
LABEL="UEFI Firmware Settings"
gettext_printf "Adding boot menu entry for UEFI Firmware Settings ...\n" >&2
cat << EOF
menuentry '$LABEL' \$menuentry_id_option 'uefi-firmware' {
fwsetup
}
EOF
fi