From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Subject: Don't accept text modes on EFI when booting Linux.
Date: 2011-08-16 16:11:10 +0200

------------------------------------------------------------
revno: 3402
committer: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
branch nick: grub
timestamp: Tue 2011-08-16 16:11:10 +0200
message:
  	Don't accept text modes on EFI when booting Linux.
  
  	* grub-core/loader/i386/linux.c (ACCEPTS_PURE_TEXT): New define.
  	(grub_linux_boot) [!ACCEPTS_PURE_TEXT]: Restrict to graphics modes.
diff:

=== modified file 'grub-core/loader/i386/linux.c'
--- a/grub-core/loader/i386/linux.c	2011-05-18 07:56:33 +0000
+++ b/grub-core/loader/i386/linux.c	2011-08-16 14:11:10 +0000
@@ -45,15 +45,18 @@
 #include <grub/efi/efi.h>
 #define HAS_VGA_TEXT 0
 #define DEFAULT_VIDEO_MODE "auto"
+#define ACCEPTS_PURE_TEXT 0
 #elif defined (GRUB_MACHINE_IEEE1275)
 #include <grub/ieee1275/ieee1275.h>
 #define HAS_VGA_TEXT 0
 #define DEFAULT_VIDEO_MODE "text"
+#define ACCEPTS_PURE_TEXT 1
 #else
 #include <grub/i386/pc/vbe.h>
 #include <grub/i386/pc/console.h>
 #define HAS_VGA_TEXT 1
 #define DEFAULT_VIDEO_MODE "text"
+#define ACCEPTS_PURE_TEXT 1
 #endif
 
 #define GRUB_LINUX_CL_OFFSET		0x1000
@@ -483,12 +486,22 @@
       tmp = grub_xasprintf ("%s;" DEFAULT_VIDEO_MODE, modevar);
       if (! tmp)
 	return grub_errno;
+#if ACCEPTS_PURE_TEXT
       err = grub_video_set_mode (tmp, 0, 0);
+#else
+      err = grub_video_set_mode (tmp, GRUB_VIDEO_MODE_TYPE_PURE_TEXT, 0);
+#endif
       grub_free (tmp);
     }
   else
-    err = grub_video_set_mode (DEFAULT_VIDEO_MODE, 0, 0);
-
+    {
+#if ACCEPTS_PURE_TEXT
+      err = grub_video_set_mode (DEFAULT_VIDEO_MODE, 0, 0);
+#else
+      err = grub_video_set_mode (DEFAULT_VIDEO_MODE,
+				 GRUB_VIDEO_MODE_TYPE_PURE_TEXT, 0);
+#endif
+    }
   if (err)
     {
       grub_print_error ();