Build grub.img for loading grub from within syslinux

[grml-live.git] / etc / grml / fai / config / scripts / GRMLBASE / 45-grub-images

diff --git a/etc/grml/fai/config/scripts/GRMLBASE/45-grub-images b/etc/grml/fai/config/scripts/GRMLBASE/45-grub-images
new file mode 100755 (executable)
index 0000000..75fc1b2
--- /dev/null
+++ b/etc/grml/fai/config/scripts/GRMLBASE/45-grub-images
@@ -0,0 +1,87 @@
+#!/bin/bash
+# Filename:      ${GRML_FAI_CONFIG}/config/scripts/GRMLBASE/45-efi
+# Purpose:       create grub image for use in ISO for EFI boot
+# Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
+# Bug-Reports:   see http://grml.org/bugs/
+# License:       This file is licensed under the GPL v2 or any later version.
+################################################################################
+
+set -e
+
+
+BOOTX64="${target}/boot/bootx64.efi"
+EFI_IMG="${target}/boot/efi.img"
+TMP_CONFIG="${target}/tmp/grub_config_efi"
+
+rm -f "$BOOTX64" "$EFI_IMG" "$TMP_CONFIG"
+
+cat > "$TMP_CONFIG" <<EOF
+search --set -f /conf/bootid.txt root
+if [ -e /boot/grub/grub.cfg ]; then
+ set prefix=(\$root)/boot/grub
+ configfile /boot/grub/grub.cfg
+else
+ echo "E: Could not find root device!"
+fi
+EOF
+
+BOOTX64="${BOOTX64##${target}}"
+EFI_IMG="${EFI_IMG##${target}}"
+TMP_CONFIG="${TMP_CONFIG##${target}}"
+
+ARCHS=(i386-pc)
+
+declare -A ADDITIONAL_MODULES
+ADDITIONAL_MODULES[i386-pc]="biosdisk"
+
+if ifclass AMD64 ; then
+  if [ -r "${target}"/usr/lib/grub/x86_64-efi/moddep.lst ] ; then
+    ARCHS+=(x86_64-efi)
+    ADDITIONAL_MODULES[x86_64-efi]="efi_gop efi_uga"
+  else
+    echo "/usr/lib/grub/x86_64-efi/moddep.lst could not be found, skipping."
+    echo "NOTE: grub-efi-amd64-bin not installed?"
+  fi
+fi
+
+BOOTX64="${BOOTX64##${target}}"
+EFI_IMG="${EFI_IMG##${target}}"
+TMP_CONFIG="${TMP_CONFIG##${target}}"
+
+for arch in ${ARCHS[@]} ; do
+$ROOTCMD grub-mkimage -O $arch -o /boot/$arch.img --prefix=/boot/grub/ --config="$TMP_CONFIG" \
+  bitmap boot btrfs cat chain cmp configfile cpio echo elf ext2    \
+  fat gfxmenu gfxterm gzio help iso9660 jpeg linux loopback lvm    \
+  memdisk minicmd multiboot normal part_gpt part_msdos play png    \
+  probe raid regexp reiserfs search search_fs_file search_fs_uuid  \
+  search_label squash4 terminal test video videoinfo xfs ${ADDITIONAL_MODULES[$arch]}
+done
+
+if [ -f "${target}/boot/i386-pc.img" ] ; then
+  mv "${target}/boot/i386-pc.img" "${target}/boot/grub/grub.img"
+fi
+
+if [ -f "${target}/boot/x86_64-efi.img" ] ; then
+  mv "${target}/boot/x86_64-efi.img" "${target}/${BOOTX64}"
+fi
+if ! [ -r "${target}/${BOOTX64}" ] ; then
+  echo "Can not access grub efi image." >&2
+  exit 1
+fi
+
+SIZE=$(du -sk "${target}/${BOOTX64}" | awk -F" " '{print $1'})
+SIZE=$(((($SIZE / 32 )+2)*32))
+
+dd if=/dev/zero of="${target}/${EFI_IMG}" bs=1k count="$SIZE" 2>/dev/null
+$ROOTCMD mkfs.vfat -n GRML "$EFI_IMG" >/dev/null
+$ROOTCMD mmd -i "$EFI_IMG" ::EFI
+$ROOTCMD mmd -i "$EFI_IMG" ::EFI/BOOT
+$ROOTCMD mcopy -i "$EFI_IMG" "$BOOTX64" ::EFI/BOOT/bootx64.efi >/dev/null
+
+rm -f "${target}/${TMP_CONFIG}"
+
+echo "Generated EFI image $BOOTX64"
+echo "Generated bootx64 image $EFI_IMG"
+
+## END OF FILE #################################################################
+# vim:ft=sh expandtab ai tw=80 tabstop=4 shiftwidth=2