SMBios.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef KERNEL_MACHINE_X86_COMMON_SMBIOS_H
#define KERNEL_MACHINE_X86_COMMON_SMBIOS_H

#if defined(SMBIOS)

#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/processor/types.h"

class SMBios
{
  public:
    SMBios() INITIALISATION_ONLY;
    ~SMBios();

    void initialise() INITIALISATION_ONLY;

  private:
    SMBios(const SMBios &);
    SMBios &operator=(const SMBios &);

    struct EntryPoint
    {
        uint32_t signature;
        uint8_t checksum;
        uint8_t length;
        uint8_t majorVersion;
        uint8_t minorVersion;
        uint16_t maxStructureSize;
        uint8_t revision;
        uint8_t reserved[5];
        uint8_t signature2[5];
        uint8_t checksum2;
        uint16_t tableLength;
        uint32_t tableAddress;
        uint16_t structureCount;
        uint8_t bcdRevision;
    } PACKED;

    struct Header
    {
        uint8_t type;
        uint8_t length;
        uint16_t handle;
    } PACKED;

    struct BiosInformation
    {
        uint8_t vendorIndex;
        uint8_t biosVersionIndex;
        uint16_t biosStartSegment;
        uint8_t biosReleaseDateIndex;
        uint8_t biosRomSize;
        uint32_t biosCharacteristics;
    } PACKED;

    Header *next(Header *pHeader) INITIALISATION_ONLY;
    const char *
    getString(const Header *pHeader, size_t index) INITIALISATION_ONLY;
    void find() INITIALISATION_ONLY;
    bool checksum(const EntryPoint *pEntryPoint) INITIALISATION_ONLY;

    EntryPoint *m_pEntryPoint;
};

#endif

#endif