MdeModulePkg/Include/Guid/PiSmmMemoryAttributesTable.h

   1 /** @file
   2   Define the GUID of the EDKII PI SMM memory attribute table, which
   3   is published by PI SMM Core.
   4
   5 Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
   6 This program and the accompanying materials are licensed and made available under
   7 the terms and conditions of the BSD License that accompanies this distribution.
   8 The full text of the license may be found at
   9 http://opensource.org/licenses/bsd-license.php.
  10
  11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #ifndef _PI_SMM_MEMORY_ATTRIBUTES_TABLE_H_
  17 #define _PI_SMM_MEMORY_ATTRIBUTES_TABLE_H_
  18
  19 #define EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE_GUID {\
  20   0x6b9fd3f7, 0x16df, 0x45e8, {0xbd, 0x39, 0xb9, 0x4a, 0x66, 0x54, 0x1a, 0x5d} \
  21 }
  22
  23 //
  24 // The PI SMM memory attribute table contains the SMM memory map for SMM image.
  25 //
  26 // This table is installed to SMST as SMM configuration table.
  27 //
  28 // This table is published at gEfiSmmEndOfDxeProtocolGuid notification, because
  29 // there should be no more SMM driver loaded after that. The EfiRuntimeServicesCode
  30 // region should not be changed any more.
  31 //
  32 // This table is published, if and only if all SMM PE/COFF have aligned section
  33 // as specified in UEFI specification Section 2.3. For example, IA32/X64 alignment is 4KiB.
  34 //
  35 // If this table is published, the EfiRuntimeServicesCode contains code only
  36 // and it is EFI_MEMORY_RO; the EfiRuntimeServicesData contains data only
  37 // and it is EFI_MEMORY_XP.
  38 //
  39 typedef struct {
  40   UINT32                Version;
  41   UINT32                NumberOfEntries;
  42   UINT32                DescriptorSize;
  43   UINT32                Reserved;
  44 //EFI_MEMORY_DESCRIPTOR Entry[1];
  45 } EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE;
  46
  47 #define EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE_VERSION  0x00000001
  48
  49 extern EFI_GUID gEdkiiPiSmmMemoryAttributesTableGuid;
  50
  51 #endif