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Refine include file of GUID HOB for SMRAM memory reserve, according to review comments. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8763 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
xli24 2009-07-06 15:09:45 +00:00
parent c9c705a855
commit 444bf90deb
1 changed files with 29 additions and 25 deletions
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54
IntelFrameworkPkg/Include/Guid/SmramMemoryReserve.h
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@ -1,5 +1,12 @@
/** @file
GUID for use in reserving SMRAM regions.
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
@ -10,8 +17,6 @@
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name: SmramMemoryReserve.h
@par Revision Reference:
GUIDs defined in SmmCis spec version 0.9
@ -27,42 +32,41 @@
0x6dadf1d1, 0xd4cc, 0x4910, {0xbb, 0x6e, 0x82, 0xb1, 0xfd, 0x80, 0xff, 0x3d } \
}
//
// *******************************************************
// EFI_SMRAM_DESCRIPTOR
// *******************************************************
//
///
/// Describes the candidate regions for SMRAM that are
/// supported by this platform.
///
typedef struct {
EFI_PHYSICAL_ADDRESS PhysicalStart; ///< Phsyical location in DRAM
EFI_PHYSICAL_ADDRESS CpuStart; ///< Address CPU uses to access the SMI handler
// May or may not match PhysicalStart
//
UINT64 PhysicalSize;
UINT64 RegionState;
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;
//
// *******************************************************
// EFI_SMRAM_STATE
// *******************************************************
// 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
#define EFI_NEEDS_TESTING 0x00000020
#define EFI_NEEDS_ECC_INITIALIZATION 0x00000040
//
// *******************************************************
// EFI_SMRAM_HOB_DESCRIPTOR_BLOCK
// *******************************************************
//
///
/// GUID specific data structure of HOB for reserving SMRAM regions.
///
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;
} EFI_HOB_SMRAM_DESCRIPTOR_BLOCK;
extern EFI_GUID gEfiSmmPeiSmramMemoryReserveGuid;