107 lines
4.0 KiB
C
107 lines
4.0 KiB
C
/*****************************************************************************\
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* layout.h
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*****************************************************************************
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* Copyright (C) 2002-2005 The Regents of the University of California.
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* Produced at the Lawrence Livermore National Laboratory.
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* Written by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>.
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* UCRL-CODE-2003-012
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* All rights reserved.
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*
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* This file is part of nvramtool, a utility for reading/writing coreboot
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* parameters and displaying information from the coreboot table.
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* For details, see https://coreboot.org/nvramtool.
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*
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* Please also read the file DISCLAIMER which is included in this software
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* distribution.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License (as published by the
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* Free Software Foundation) version 2, dated June 1991.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
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* conditions of the GNU General Public License for more details.
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\*****************************************************************************/
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#ifndef LAYOUT_H
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#define LAYOUT_H
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#include "common.h"
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#include "coreboot_tables.h"
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#define LAYOUT_ENTRY_OVERLAP (LAYOUT_RESULT_START + 0)
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#define LAYOUT_ENTRY_BAD_LENGTH (LAYOUT_RESULT_START + 1)
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#define LAYOUT_DUPLICATE_ENUM (LAYOUT_RESULT_START + 2)
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#define LAYOUT_SUMMED_AREA_START_NOT_ALIGNED (LAYOUT_RESULT_START + 3)
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#define LAYOUT_SUMMED_AREA_END_NOT_ALIGNED (LAYOUT_RESULT_START + 4)
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#define LAYOUT_CHECKSUM_LOCATION_NOT_ALIGNED (LAYOUT_RESULT_START + 5)
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#define LAYOUT_INVALID_SUMMED_AREA (LAYOUT_RESULT_START + 6)
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#define LAYOUT_CHECKSUM_OVERLAPS_SUMMED_AREA (LAYOUT_RESULT_START + 7)
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#define LAYOUT_SUMMED_AREA_OUT_OF_RANGE (LAYOUT_RESULT_START + 8)
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#define LAYOUT_CHECKSUM_LOCATION_OUT_OF_RANGE (LAYOUT_RESULT_START + 9)
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#define LAYOUT_MULTIBYTE_ENTRY_NOT_ALIGNED (LAYOUT_RESULT_START + 10)
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typedef enum {
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CMOS_ENTRY_ENUM = 'e',
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CMOS_ENTRY_HEX = 'h',
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CMOS_ENTRY_STRING = 's',
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CMOS_ENTRY_RESERVED = 'r',
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} cmos_entry_config_t;
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/* This represents a CMOS parameter. */
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typedef struct {
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unsigned bit;
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unsigned length;
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cmos_entry_config_t config;
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unsigned config_id;
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char name[CMOS_MAX_NAME_LENGTH + 1];
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} cmos_entry_t;
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/* This represents a possible value for a CMOS parameter of type
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* CMOS_ENTRY_ENUM.
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*/
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typedef struct {
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unsigned config_id;
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unsigned long long value;
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char text[CMOS_MAX_TEXT_LENGTH + 1];
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} cmos_enum_t;
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/* This represents the location of the CMOS checksum and the area over
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* which it is computed. Depending on the context, the values may be
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* represented as either bit positions or byte positions.
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*/
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typedef struct {
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unsigned summed_area_start; /* first checksummed location */
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unsigned summed_area_end; /* last checksummed location */
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unsigned checksum_at; /* location of checksum */
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} cmos_checksum_layout_t;
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extern const char checksum_param_name[];
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extern unsigned cmos_checksum_start;
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extern unsigned cmos_checksum_end;
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extern unsigned cmos_checksum_index;
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typedef void (*cmos_layout_get_fn_t) (void);
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void register_cmos_layout_get_fn(cmos_layout_get_fn_t fn);
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void get_cmos_layout(void);
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int add_cmos_entry(const cmos_entry_t * e, const cmos_entry_t ** conflict);
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const cmos_entry_t *find_cmos_entry(const char name[]);
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const cmos_entry_t *first_cmos_entry(void);
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const cmos_entry_t *next_cmos_entry(const cmos_entry_t * last);
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int add_cmos_enum(const cmos_enum_t * e);
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const cmos_enum_t *find_cmos_enum(unsigned config_id, unsigned long long value);
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const cmos_enum_t *first_cmos_enum(void);
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const cmos_enum_t *next_cmos_enum(const cmos_enum_t * last);
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const cmos_enum_t *first_cmos_enum_id(unsigned config_id);
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const cmos_enum_t *next_cmos_enum_id(const cmos_enum_t * last);
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int is_checksum_name(const char name[]);
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int checksum_layout_to_bytes(cmos_checksum_layout_t * layout);
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void checksum_layout_to_bits(cmos_checksum_layout_t * layout);
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#endif /* LAYOUT_H */
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