diff --git a/util/lxbios/layout.h b/util/lxbios/layout.h
new file mode 100644
index 0000000..8a6ab80
--- /dev/null
+++ b/util/lxbios/layout.h
@@ -0,0 +1,114 @@
+/*****************************************************************************\
+ * layout.h
+ * $Id: layout.h,v 1.2 2006/01/24 00:25:40 dsp_llnl Exp $
+ *****************************************************************************
+ *  Copyright (C) 2002-2005 The Regents of the University of California.
+ *  Produced at the Lawrence Livermore National Laboratory.
+ *  Written by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>.
+ *  UCRL-CODE-2003-012
+ *  All rights reserved.
+ *
+ *  This file is part of lxbios, a utility for reading/writing LinuxBIOS
+ *  parameters and displaying information from the LinuxBIOS table.
+ *  For details, see <http://www.llnl.gov/linux/lxbios/>.
+ *
+ *  Please also read the file DISCLAIMER which is included in this software
+ *  distribution.
+ *
+ *  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) version 2, dated June 1991.
+ *
+ *  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 terms and
+ *  conditions of 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.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+\*****************************************************************************/
+
+#ifndef LXBIOS_LAYOUT_H
+#define LXBIOS_LAYOUT_H
+
+#include "common.h"
+#include "linuxbios_tables.h"
+
+#define LAYOUT_ENTRY_OVERLAP (LAYOUT_RESULT_START + 0)
+#define LAYOUT_ENTRY_BAD_LENGTH (LAYOUT_RESULT_START + 1)
+#define LAYOUT_DUPLICATE_ENUM (LAYOUT_RESULT_START + 2)
+#define LAYOUT_SUMMED_AREA_START_NOT_ALIGNED (LAYOUT_RESULT_START + 3)
+#define LAYOUT_SUMMED_AREA_END_NOT_ALIGNED (LAYOUT_RESULT_START + 4)
+#define LAYOUT_CHECKSUM_LOCATION_NOT_ALIGNED (LAYOUT_RESULT_START + 5)
+#define LAYOUT_INVALID_SUMMED_AREA (LAYOUT_RESULT_START + 6)
+#define LAYOUT_CHECKSUM_OVERLAPS_SUMMED_AREA (LAYOUT_RESULT_START + 7)
+#define LAYOUT_SUMMED_AREA_OUT_OF_RANGE (LAYOUT_RESULT_START + 8)
+#define LAYOUT_CHECKSUM_LOCATION_OUT_OF_RANGE (LAYOUT_RESULT_START + 9)
+
+typedef enum
+ { CMOS_ENTRY_ENUM,
+   CMOS_ENTRY_HEX,
+   CMOS_ENTRY_RESERVED
+ }
+cmos_entry_config_t;
+
+/* This represents a CMOS parameter. */
+typedef struct
+ { unsigned bit;
+   unsigned length;
+   cmos_entry_config_t config;
+   unsigned config_id;
+   char name[CMOS_MAX_NAME_LENGTH];
+ }
+cmos_entry_t;
+
+/* This represents a possible value for a CMOS parameter of type
+ * CMOS_ENTRY_ENUM.
+ */
+typedef struct
+ { unsigned config_id;
+   unsigned long long value;
+   char text[CMOS_MAX_TEXT_LENGTH];
+ }
+cmos_enum_t;
+
+/* This represents the location of the CMOS checksum and the area over which
+ * it is computed.  Depending on the context, the values may be represented as
+ * either bit positions or byte positions.
+ */
+typedef struct
+ { unsigned summed_area_start;  /* first checksummed location */
+   unsigned summed_area_end;  /* last checksummed location */
+   unsigned checksum_at;  /* location of checksum */
+ }
+cmos_checksum_layout_t;
+
+extern const char checksum_param_name[];
+
+extern unsigned cmos_checksum_start;
+
+extern unsigned cmos_checksum_end;
+
+extern unsigned cmos_checksum_index;
+
+typedef void (*cmos_layout_get_fn_t) (void);
+
+void register_cmos_layout_get_fn (cmos_layout_get_fn_t fn);
+void get_cmos_layout (void);
+int add_cmos_entry (const cmos_entry_t *e, const cmos_entry_t **conflict);
+const cmos_entry_t * find_cmos_entry (const char name[]);
+const cmos_entry_t * first_cmos_entry (void);
+const cmos_entry_t * next_cmos_entry (const cmos_entry_t *last);
+int add_cmos_enum (const cmos_enum_t *e);
+const cmos_enum_t * find_cmos_enum (unsigned config_id,
+                                    unsigned long long value);
+const cmos_enum_t * first_cmos_enum (void);
+const cmos_enum_t * next_cmos_enum (const cmos_enum_t *last);
+const cmos_enum_t * first_cmos_enum_id (unsigned config_id);
+const cmos_enum_t * next_cmos_enum_id (const cmos_enum_t *last);
+int is_checksum_name (const char name[]);
+int checksum_layout_to_bytes (cmos_checksum_layout_t *layout);
+void checksum_layout_to_bits (cmos_checksum_layout_t *layout);
+
+#endif  /* LXBIOS_LAYOUT_H */