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Editing File: /etc/grub.d/30_uefi-firmware

#! /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="/usr"
exec_prefix="/usr"
datarootdir="/usr/share"

export TEXTDOMAIN=grub
export TEXTDOMAINDIR="${datarootdir}/locale"

. "$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

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