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#! /bin/bash
# support for GRUB version 2

error=0; trap 'error=$(($?>$error?$?:$error))' ERR # save maximum error code

set -a

# do not set up grub during dirinstall
if [ "$FAI_ACTION" = "dirinstall" ] ; then
    exit 0
fi
# during softupdate use this file
[ -r $LOGDIR/disk_var.sh ] && . $LOGDIR/disk_var.sh

if [ -z "$BOOT_DEVICE" ]; then
    exit 189
fi

# disable os-prober because of #788062
ainsl /etc/default/grub 'GRUB_DISABLE_OS_PROBER=true'

# skip the rest, if not an initial installation
if [ $FAI_ACTION != "install" ]; then
    $ROOTCMD update-grub
    exit $error
fi

$ROOTCMD grub-mkdevicemap --no-floppy
GROOT=$($ROOTCMD grub-probe -tdrive -d $BOOT_DEVICE)

if [[ $GROOT =~ 'hostdisk' ]]; then
    cat > $target/boot/grub/device.map <<EOF
(hd0)   $BOOT_DEVICE
EOF
    if ifclass HIKEY; then
        # Standard grub-install for SD card
        $ROOTCMD grub-install --removable --no-nvram $BOOT_DEVICE
        if [ $? -eq 0 ]; then
            echo "Hikey grub for SD card installed"
        fi
        # Custom grub for emmc and lava
cat << EOF > $target/boot/grub/emmc.config
set root=(hd0,gpt9)
set prefix=(\$root)'/boot/grub'
configfile \$prefix/grub.cfg
EOF
        GRUB_MODULES="boot chain configfile echo efinet eval ext2 fat font gettext gfxterm gzio help linux loadenv lsefi normal part_gpt part_msdos read regexp search search_fs_file search_fs_uuid search_label terminal terminfo test tftp time"

        $ROOTCMD grub-mkimage --prefix='(hd0,gpt9)/boot/grub' \
            --config=/boot/grub/emmc.config --output=/boot/efi/EFI/BOOT/GRUBAA64.EFI \
            --format=arm64-efi --compression=auto $GRUB_MODULES
        echo "Standalone Hikey grub for eMMC and LAVA installed"
    fi
    rm $target/boot/grub/device.map

else
    $ROOTCMD grub-install --no-floppy "$GROOT"
    if [ $? -eq 0 ]; then
        echo "Grub installed on $BOOT_DEVICE = $GROOT"
    fi
fi
$ROOTCMD update-grub

exit $error