add diskless support.

stage2/nbi.h

@@ -0,0 +1,27 @@
+/* nbi.h - definitions for Net Boot Image */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2000  Free Software Foundation, Inc.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef GRUB_NBI_HEADER
+#define GRUB_NBI_HEADER
+
+#define NBI_MAGIC	0x1B031336
+#define NBI_DEST_ADDR	0x8000
+
+#endif /* ! GRUB_NBI_HEADER */