MdePkg/Include/Uefi/UefiAcpiDataTable.h

   1 /** @file
   2   UEFI ACPI Data Table Definition.
   3
   4 Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
   5 This program and the accompanying materials are licensed and made available under
   6 the terms and conditions of the BSD License that accompanies this distribution.
   7 The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php.
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #ifndef __UEFI_ACPI_DATA_TABLE_H__
  16 #define __UEFI_ACPI_DATA_TABLE_H__
  17
  18 #include <IndustryStandard/Acpi.h>
  19
  20 #pragma pack(1)
  21 typedef struct {
  22   EFI_ACPI_DESCRIPTION_HEADER   Header;
  23   GUID                          Identifier;
  24   UINT16                        DataOffset;
  25 } EFI_ACPI_DATA_TABLE;
  26
  27 typedef struct {
  28   EFI_ACPI_DATA_TABLE  UefiAcpiDataTable;
  29   UINT32               SwSmiNumber;
  30   UINT64               BufferPtrAddress;
  31 } EFI_SMM_COMMUNICATION_ACPI_TABLE;
  32
  33 ///
  34 /// To avoid confusion in interpreting frames, the communication buffer should always
  35 /// begin with EFI_SMM_COMMUNICATE_HEADER
  36 ///
  37 typedef struct {
  38   ///
  39   /// Allows for disambiguation of the message format.
  40   ///
  41   EFI_GUID  HeaderGuid;
  42   ///
  43   /// Describes the size of Data (in bytes) and does not include the size of the header.
  44   ///
  45   UINTN     MessageLength;
  46   ///
  47   /// Designates an array of bytes that is MessageLength in size.
  48   ///
  49   UINT8     Data[1];
  50 } EFI_SMM_COMMUNICATE_HEADER;
  51
  52 #pragma pack()
  53
  54 #endif
  55