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/*;********************************************************************************
;
; Copyright (c) 2011, Advanced Micro Devices, Inc.
; All rights reserved.
; 
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met:
;     * Redistributions of source code must retain the above copyright
;       notice, this list of conditions and the following disclaimer.
;     * Redistributions in binary form must reproduce the above copyright
;       notice, this list of conditions and the following disclaimer in the
;       documentation and/or other materials provided with the distribution.
;     * Neither the name of Advanced Micro Devices, Inc. nor the names of 
;       its contributors may be used to endorse or promote products derived 
;       from this software without specific prior written permission.
; 
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
; DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
; 
;*********************************************************************************/

/**
 * RSDP - ACPI 2.0 table RSDP
 */
typedef struct _RSDP {
  unsigned long long  Signature;        ///< RSDP signature "RSD PTR"
  unsigned char  Checksum;          ///< checksum of the first 20 bytes
  unsigned char  OEMID[6];          ///< OEM ID, "LXBIOS"
  unsigned char  Revision;          ///< 0 for APCI 1.0, 2 for ACPI 2.0
  unsigned int  RsdtAddress;      ///< physical address of RSDT
  unsigned int  Length;           ///< total length of RSDP (including extended part)
  unsigned long long  XsdtAddress;      ///< physical address of XSDT
  unsigned char  ExtendedChecksum;  ///< chechsum of whole table
  unsigned char  Reserved[3];       ///< Reserved
} RSDP;


/// DESCRIPTION_HEADER - ACPI common table header
typedef struct _DESCRIPTION_HEADER {
  unsigned int  Signature;        ///< ACPI signature (4 ASCII characters)
  unsigned int  Length;           ///< Length of table, in bytes, including header
  unsigned char  Revision;          ///< ACPI Specification minor version #
  unsigned char  Checksum;          ///< To make sum of entire table == 0
  unsigned char  OEMID[6];          ///< OEM identification
  unsigned char  OEMTableID[8];     ///< OEM table identification
  unsigned int  OEMRevision;      ///< OEM revision number
  unsigned int  CreatorID;        ///< ASL compiler vendor ID
  unsigned int  CreatorRevision;  ///< ASL compiler revision number
} DESCRIPTION_HEADER;

void* ACPI_LocateTable (IN unsigned int Signature);
void  ACPI_SetTableChecksum (IN void* TablePtr);
unsigned char ACPI_GetTableChecksum (IN void* TablePtr);
unsigned char GetByteSum (IN void* pData, IN unsigned int Length);