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/** @file
This is a special GUID extension Hob to describe SMRAM memory regions.
This file defines:
* the GUID used to identify the GUID HOB for reserving SMRAM regions.
* the data structure of SMRAM descriptor to describe SMRAM candidate regions
* values of state of SMRAM candidate regions
* the GUID specific data structure of HOB for reserving SMRAM regions.
Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@par Revision Reference:
GUIDs defined in PI SPEC version 1.5.
**/
#ifndef _SMRAM_MEMORY_RESERVE_H_
#define _SMRAM_MEMORY_RESERVE_H_
#define EFI_SMM_SMRAM_MEMORY_GUID \
{ \
0x6dadf1d1, 0xd4cc, 0x4910, {0xbb, 0x6e, 0x82, 0xb1, 0xfd, 0x80, 0xff, 0x3d } \
}
/**
* The GUID extension hob is to describe SMRAM memory regions supported by the platform.
**/
typedef struct {
///
/// Designates the number of possible regions in the system
/// that can be usable for SMRAM.
///
UINT32 NumberOfSmmReservedRegions;
///
/// Used throughout this protocol to describe the candidate
/// regions for SMRAM that are supported by this platform.
///
EFI_SMRAM_DESCRIPTOR Descriptor[1];
} EFI_SMRAM_HOB_DESCRIPTOR_BLOCK;
extern EFI_GUID gEfiSmmSmramMemoryGuid;
#endif
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