grub2/0154-Try-to-emit-linux16-initrd16-and-linuxefi-initrdefi-.patch

From 53e38c3eefd1e5f41bf1f3b5bc7bae4e5b667ff1 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Mon, 27 Oct 2014 09:22:55 -0400
Subject: [PATCH 154/154] Try to emit linux16/initrd16 and linuxefi/initrdefi
 in 30-os_prober.

Resolves: rhbz#1108296

Signed-off-by: Peter Jones <pjones@redhat.com>
---
 util/grub.d/30_os-prober.in | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/util/grub.d/30_os-prober.in b/util/grub.d/30_os-prober.in
index 9f955ab..908a09d 100644
--- a/util/grub.d/30_os-prober.in
+++ b/util/grub.d/30_os-prober.in
@@ -135,6 +135,29 @@ for OS in ${OSPROBED} ; do
     LONGNAME="${LABEL}"
   fi
 
+  sixteenbit=""
+  linuxefi="linux"
+  initrdefi="initrd"
+  machine=`uname -m`
+  case "$machine" in
+    i?86|x86_64)
+      sixteenbit="16"
+      linuxefi="linuxefi"
+      initrdefi="initrdefi"
+      ;;
+    aarch64)
+      linuxefi="linux"
+      initrdefi="initrd"
+  esac
+  linux="linux${sixteenbit}"
+  initrd="initrd${sixteenbit}"
+  # there's no way to tell that the /other/ os is booting through UEFI,
+  # but if we are it's an okay bet...
+  if [ -d /sys/firmware/efi ]; then
+    linux=$linuxefi
+    initrd=$initrdefi
+  fi
+
   gettext_printf "Found %s on %s\n" "${LONGNAME}" "${DEVICE}" >&2
 
   case ${BOOT} in
@@ -235,11 +258,11 @@ EOF
 	    save_default_entry | grub_add_tab
 	    printf '%s\n' "${prepare_boot_cache}"
 	    cat <<  EOF
-	linux ${LKERNEL} ${LPARAMS}
+	${linux} ${LKERNEL} ${LPARAMS}
 EOF
             if [ -n "${LINITRD}" ] ; then
           cat << EOF
-	initrd ${LINITRD}
+	${initrd} ${LINITRD}
 EOF
             fi
         cat << EOF
@@ -255,11 +278,11 @@ EOF
 	save_default_entry | sed -e "s/^/$grub_tab$grub_tab/"
 	printf '%s\n' "${prepare_boot_cache}" | grub_add_tab
 	cat <<  EOF
-		linux ${LKERNEL} ${LPARAMS}
+		${linux} ${LKERNEL} ${LPARAMS}
 EOF
         if [ -n "${LINITRD}" ] ; then
             cat << EOF
-		initrd ${LINITRD}
+		${initrd} ${LINITRD}
 EOF
         fi
         cat << EOF
-- 
1.9.3