util/nvramtool/cmos_ops.h

   1 /*****************************************************************************\
   2  * cmos_ops.h
   3  *****************************************************************************
   4  *  Copyright (C) 2002-2005 The Regents of the University of California.
   5  *  Produced at the Lawrence Livermore National Laboratory.
   6  *  Written by David S. Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>.
   7  *  UCRL-CODE-2003-012
   8  *  All rights reserved.
   9  *
  10  *  This file is part of nvramtool, a utility for reading/writing coreboot
  11  *  parameters and displaying information from the coreboot table.
  12  *  For details, see https://coreboot.org/nvramtool.
  13  *
  14  *  Please also read the file DISCLAIMER which is included in this software
  15  *  distribution.
  16  *
  17  *  This program is free software; you can redistribute it and/or modify it
  18  *  under the terms of the GNU General Public License (as published by the
  19  *  Free Software Foundation) version 2, dated June 1991.
  20  *
  21  *  This program is distributed in the hope that it will be useful, but
  22  *  WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
  23  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the terms and
  24  *  conditions of the GNU General Public License for more details.
  25 \*****************************************************************************/
  26
  27 #ifndef CMOS_OPS_H
  28 #define CMOS_OPS_H
  29
  30 #include "common.h"
  31 #include "layout.h"
  32
  33 #define CMOS_OP_BAD_ENUM_VALUE (CMOS_OP_RESULT_START + 0)
  34 #define CMOS_OP_NEGATIVE_INT (CMOS_OP_RESULT_START + 1)
  35 #define CMOS_OP_INVALID_INT (CMOS_OP_RESULT_START + 2)
  36 #define CMOS_OP_RESERVED (CMOS_OP_RESULT_START + 3)
  37 #define CMOS_OP_VALUE_TOO_WIDE (CMOS_OP_RESULT_START + 4)
  38 #define CMOS_OP_NO_MATCHING_ENUM (CMOS_OP_RESULT_START + 5)
  39
  40 int prepare_cmos_read(const cmos_entry_t * e);
  41 int prepare_cmos_write(const cmos_entry_t * e, const char value_str[],
  42                        unsigned long long *value);
  43 uint16_t cmos_checksum_read(void);
  44 void cmos_checksum_write(uint16_t checksum);
  45 uint16_t cmos_checksum_compute(void);
  46 void cmos_checksum_verify(void);
  47
  48 #endif                          /* CMOS_OPS_H */