Signed-off-by: Stefan Reinauer <stepan@coresystems.de>

Acked-by: Jordan Crouse <jordan.crouse@amd.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2736 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 62 insertions, 0 deletions

diff --git a/util/lxbios/cmos_lowlevel.h b/util/lxbios/cmos_lowlevel.h
new file mode 100644
index 0000000000..ccc28dc589
--- /dev/null
+++ b/util/lxbios/cmos_lowlevel.h
@@ -0,0 +1,62 @@
+/*****************************************************************************\
+ * cmos_lowlevel.h
+ * $Id: cmos_lowlevel.h,v 1.2 2005/12/16 22:45:49 dsp_llnl Exp $
+ *****************************************************************************
+ *  Copyright (C) 2002-2005 The Regents of the University of California.
+ *  Produced at the Lawrence Livermore National Laboratory.
+ *  Written by David S. 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_CMOS_LOWLEVEL_H
+#define LXBIOS_CMOS_LOWLEVEL_H
+
+#include "common.h"
+
+#define CMOS_AREA_OUT_OF_RANGE (CMOS_RESULT_START + 0)
+#define CMOS_AREA_OVERLAPS_RTC (CMOS_RESULT_START + 1)
+#define CMOS_AREA_TOO_WIDE (CMOS_RESULT_START + 2)
+
+unsigned long long cmos_read (unsigned bit, unsigned length);
+void cmos_write (unsigned bit, unsigned length, unsigned long long value);
+unsigned char cmos_read_byte (unsigned index);
+void cmos_write_byte (unsigned index, unsigned char value);
+void cmos_read_all (unsigned char data[]);
+void cmos_write_all (unsigned char data[]);
+void set_iopl (int level);
+int verify_cmos_op (unsigned bit, unsigned length);
+
+#define CMOS_SIZE 256  /* size of CMOS memory in bytes */
+#define CMOS_RTC_AREA_SIZE 14  /* first 14 bytes control real time clock */
+
+/****************************************************************************
+ * verify_cmos_byte_index
+ *
+ * Return 1 if 'index' does NOT specify a valid CMOS memory location.  Else
+ * return 0.
+ ****************************************************************************/
+static inline int verify_cmos_byte_index (unsigned index)
+ { return (index < CMOS_RTC_AREA_SIZE) || (index >= CMOS_SIZE); }
+
+#endif  /* LXBIOS_CMOS_LOWLEVEL_H */