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 SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #ifndef _PI_SMM_MEMORY_ATTRIBUTES_TABLE_H_
  11 #define _PI_SMM_MEMORY_ATTRIBUTES_TABLE_H_
  12
  13 #define EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE_GUID {\
  14   0x6b9fd3f7, 0x16df, 0x45e8, {0xbd, 0x39, 0xb9, 0x4a, 0x66, 0x54, 0x1a, 0x5d} \
  15 }
  16
  17 //
  18 // The PI SMM memory attribute table contains the SMM memory map for SMM image.
  19 //
  20 // This table is installed to SMST as SMM configuration table.
  21 //
  22 // This table is published at gEfiSmmEndOfDxeProtocolGuid notification, because
  23 // there should be no more SMM driver loaded after that. The EfiRuntimeServicesCode
  24 // region should not be changed any more.
  25 //
  26 // This table is published, if and only if all SMM PE/COFF have aligned section
  27 // as specified in UEFI specification Section 2.3. For example, IA32/X64 alignment is 4KiB.
  28 //
  29 // If this table is published, the EfiRuntimeServicesCode contains code only
  30 // and it is EFI_MEMORY_RO; the EfiRuntimeServicesData contains data only
  31 // and it is EFI_MEMORY_XP.
  32 //
  33 typedef struct {
  34   UINT32                Version;
  35   UINT32                NumberOfEntries;
  36   UINT32                DescriptorSize;
  37   UINT32                Reserved;
  38 //EFI_MEMORY_DESCRIPTOR Entry[1];
  39 } EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE;
  40
  41 #define EDKII_PI_SMM_MEMORY_ATTRIBUTES_TABLE_VERSION  0x00000001
  42
  43 extern EFI_GUID gEdkiiPiSmmMemoryAttributesTableGuid;
  44
  45 #endif