mirror of https://github.com/acidanthera/audk.git
78 lines
2.9 KiB
C
78 lines
2.9 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 - 2009, Intel Corporation
|
|
All rights reserved. This program and the accompanying materials
|
|
are licensed and made available under the terms and conditions of the BSD License
|
|
which accompanies this distribution. The full text of the license may be found at
|
|
http://opensource.org/licenses/bsd-license.php
|
|
|
|
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
|
|
|
@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 } \
|
|
}
|
|
|
|
///
|
|
/// Describes the candidate regions for SMRAM that are
|
|
/// supported by this platform.
|
|
///
|
|
typedef struct {
|
|
EFI_PHYSICAL_ADDRESS PhysicalStart; ///< Designates the physical address of the SMRAM in memory.
|
|
EFI_PHYSICAL_ADDRESS CpuStart; ///< Designates the address of the SMRAM, as seen by software executing on the processors.
|
|
UINT64 PhysicalSize; ///< Describes the number of bytes in the SMRAM region.
|
|
UINT64 RegionState; ///< Describes the accessibility attributes of the SMRAM.
|
|
} EFI_SMRAM_DESCRIPTOR;
|
|
|
|
///
|
|
/// Definition of SMRAM states, used as value for EFI_SMRAM_DESCRIPTOR.RegionState.
|
|
///@{
|
|
#define EFI_SMRAM_OPEN 0x00000001
|
|
#define EFI_SMRAM_CLOSED 0x00000002
|
|
#define EFI_SMRAM_LOCKED 0x00000004
|
|
#define EFI_CACHEABLE 0x00000008
|
|
#define EFI_ALLOCATED 0x00000010
|
|
///@}
|
|
|
|
/**
|
|
* 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.
|
|
///
|
|
UINTN 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
|
|
|