add the code to generate grub efi images

1 files changed, 48 insertions, 0 deletions

diff --git a/grub-efi.sh b/grub-efi.sh
new file mode 100755
index 0000000..76ee34a
--- /dev/null
+++ b/grub-efi.sh
@@ -0,0 +1,48 @@
+#!/bin/sh
+grub_config()
+{
+    cat <<EOF
+insmod echo
+echo GRUB
+insmod part_acorn
+insmod part_amiga
+insmod part_apple
+insmod part_bsd
+insmod part_dvh
+insmod part_gpt
+insmod part_msdos
+insmod part_plan
+insmod part_sun
+insmod part_sunpc
+
+insmod linux
+insmod iso9660
+
+echo Loading vmlinuz...
+linux /linux/vmlinuz boot=samizdat components quiet splash
+echo Loading initrd.img...
+initrd /linux/initrd.img
+echo Booting.
+echo
+boot
+
+EOF
+}
+
+real_destdir=grub-efi
+destdir=grub-efi.tmp
+
+set -e
+rm -r "${destdir}" 2>/dev/null || true
+mkdir -p "${destdir}"/grub/i386-pc/
+cp -r /usr/lib/grub/i386-pc/*  "${destdir}"/grub/i386-pc/
+rm "${destdir}"/grub/i386-pc/*.img || true
+
+grub_config > "${destdir}"/load_cfg
+set -x
+grub-mkimage -O i386-pc -d /usr/lib/grub/i386-pc/ -o "${destdir}"/core.img -c "${destdir}"/load_cfg  --prefix=/grub iso9660 biosdisk
+cat /usr/lib/grub/i386-pc/cdboot.img "${destdir}"/core.img > "${destdir}"/grub/i386-pc/eltorito.img
+cat /usr/lib/grub/i386-pc/boot.img "${destdir}"/core.img > "${destdir}"/embedded.img
+
+rm -r "$real_destdir" 2>/dev/null || true
+mv -T "$destdir" "$real_destdir"