mirror of https://github.com/acidanthera/audk.git
55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/** @file
|
|
Definition of GUIDed HOB for reserving SMRAM 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.
|
|
This GUIDed HOB can be used to convey the existence of the T-SEG reservation and H-SEG usage
|
|
|
|
Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
@par Revision Reference:
|
|
GUIDs defined in SmmCis spec version 0.9.
|
|
|
|
**/
|
|
|
|
#ifndef _EFI_SMM_PEI_SMRAM_MEMORY_RESERVE_H_
|
|
#define _EFI_SMM_PEI_SMRAM_MEMORY_RESERVE_H_
|
|
|
|
#define EFI_SMM_PEI_SMRAM_MEMORY_RESERVE \
|
|
{ \
|
|
0x6dadf1d1, 0xd4cc, 0x4910, {0xbb, 0x6e, 0x82, 0xb1, 0xfd, 0x80, 0xff, 0x3d } \
|
|
}
|
|
|
|
/**
|
|
* GUID specific data structure of HOB for reserving SMRAM regions.
|
|
*
|
|
* Inconsistent with specification here:
|
|
* EFI_HOB_SMRAM_DESCRIPTOR_BLOCK has been changed to EFI_SMRAM_HOB_DESCRIPTOR_BLOCK.
|
|
* This inconsistency is kept in code in order for backward compatibility.
|
|
**/
|
|
typedef struct {
|
|
///
|
|
/// Designates the number of possible regions in the system
|
|
/// that can be usable for SMRAM.
|
|
///
|
|
/// Inconsistent with specification here:
|
|
/// In Framework SMM CIS 0.91 specification, it defines the field type as UINTN.
|
|
/// However, HOBs are supposed to be CPU neutral, so UINT32 should be used instead.
|
|
///
|
|
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 gEfiSmmPeiSmramMemoryReserveGuid;
|
|
|
|
#endif
|
|
|