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This is a special GUID extension Hob to describe SMRAM memory regions Cc: Michael D Kinney <michael.d.kinney@intel.com> Cc: Liming Gao <liming.gao@intel.com> Cc: Ray Ni <ray.ni@intel.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2020 Signed-off-by: Marc W Chen <marc.w.chen@intel.com> Reviewed-by: Liming Gao <liming.gao@intel.com>
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/** @file
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This is a special GUID extension Hob to describe SMRAM memory regions.
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This file defines:
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* the GUID used to identify the GUID HOB for reserving SMRAM regions.
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* the data structure of SMRAM descriptor to describe SMRAM candidate regions
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* values of state of SMRAM candidate regions
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* the GUID specific data structure of HOB for reserving SMRAM regions.
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Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Revision Reference:
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GUIDs defined in PI SPEC version 1.5.
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**/
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#ifndef _SMRAM_MEMORY_RESERVE_H_
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#define _SMRAM_MEMORY_RESERVE_H_
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#define EFI_SMM_SMRAM_MEMORY_GUID \
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{ \
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0x6dadf1d1, 0xd4cc, 0x4910, {0xbb, 0x6e, 0x82, 0xb1, 0xfd, 0x80, 0xff, 0x3d } \
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}
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/**
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* The GUID extension hob is to describe SMRAM memory regions supported by the platform.
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**/
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typedef struct {
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///
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/// Designates the number of possible regions in the system
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/// that can be usable for SMRAM.
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///
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UINT32 NumberOfSmmReservedRegions;
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///
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/// Used throughout this protocol to describe the candidate
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/// regions for SMRAM that are supported by this platform.
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///
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EFI_SMRAM_DESCRIPTOR Descriptor[1];
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} EFI_SMRAM_HOB_DESCRIPTOR_BLOCK;
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extern EFI_GUID gEfiSmmSmramMemoryGuid;
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#endif
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