[PATCH v3 3/4] * util/grub.d/20_linux_xen.in: Add xen_boot command support

[fu.wei@linaro.org]

From: Fu Wei <fu.wei@linaro.org>

This patch adds the support of xen_boot command:
    xen_hypervisor
    xen_module

Also add a new "feature_xen_boot" to indicate this grub support
xen_boot command.

Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
 grub-core/normal/main.c     |  2 +-
 util/grub.d/20_linux_xen.in | 13 ++++++++++---
 2 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c
index 78a70a8..3402a05 100644
--- a/grub-core/normal/main.c
+++ b/grub-core/normal/main.c
@@ -488,7 +488,7 @@ static const char *features[] = {
   "feature_chainloader_bpb", "feature_ntldr", "feature_platform_search_hint",
   "feature_default_font_path", "feature_all_video_module",
   "feature_menuentry_id", "feature_menuentry_options", "feature_200_final",
-  "feature_nativedisk_cmd", "feature_timeout_style"
+  "feature_nativedisk_cmd", "feature_timeout_style", "feature_xen_boot"
 };
 
 GRUB_MOD_INIT(normal)
diff --git a/util/grub.d/20_linux_xen.in b/util/grub.d/20_linux_xen.in
index 46045db..998ac21 100644
--- a/util/grub.d/20_linux_xen.in
+++ b/util/grub.d/20_linux_xen.in
@@ -122,16 +122,23 @@ linux_entry ()
         else
             xen_rm_opts="no-real-mode edd=off"
         fi
-	multiboot	${rel_xen_dirname}/${xen_basename} placeholder ${xen_args} \${xen_rm_opts}
+        if [ "x\$feature_xen_boot" != xy ]; then
+            xen_loader="multiboot"
+            module_loader="module"
+        else
+            xen_loader="xen_hypervisor"
+            module_loader="xen_module"
+        fi
+	\${xen_loader}	${rel_xen_dirname}/${xen_basename} placeholder ${xen_args} \${xen_rm_opts}
 	echo	'$(echo "$lmessage" | grub_quote)'
-	module	${rel_dirname}/${basename} placeholder root=${linux_root_device_thisversion} ro ${args}
+	\${module_loader}	${rel_dirname}/${basename} placeholder root=${linux_root_device_thisversion} ro ${args}
 EOF
   if test -n "${initrd}" ; then
     # TRANSLATORS: ramdisk isn't identifier. Should be translated.
     message="$(gettext_printf "Loading initial ramdisk ...")"
     sed "s/^/$submenu_indentation/" << EOF
 	echo	'$(echo "$message" | grub_quote)'
-	module	--nounzip   ${rel_dirname}/${initrd}
+	\${module_loader} --nounzip	${rel_dirname}/${initrd}
 EOF
   fi
   sed "s/^/$submenu_indentation/" << EOF
-- 
2.5.0