diff --git a/common/g45/hw-gfx-gma-gmch-vga.ads b/common/g45/hw-gfx-gma-gmch-vga.ads
new file mode 100644
index 0000000..8a4e934
--- /dev/null
+++ b/common/g45/hw-gfx-gma-gmch-vga.ads
@@ -0,0 +1,22 @@
+--
+-- Copyright (C) 2015-2016 secunet Security Networks AG
+--
+-- 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.
+--
+
+package HW.GFX.GMA.GMCH.VGA is
+
+   procedure On
+     (Pipe : in Pipe_Index;
+      Mode : in Mode_Type);
+   procedure Off;
+
+end HW.GFX.GMA.GMCH.VGA;