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79964ac8 1/** @file\r
444bf90d 2 Definition of GUIDed HOB for reserving SMRAM regions.\r
3\r
4 This file defines:\r
5 * the GUID used to identify the GUID HOB for reserving SMRAM regions.\r
6 * the data structure of SMRAM descriptor to describe SMRAM candidate regions\r
7 * values of state of SMRAM candidate regions\r
8 * the GUID specific data structure of HOB for reserving SMRAM regions.\r
9 This GUIDed HOB can be used to convey the existence of the T-SEG reservation and H-SEG usage\r
79964ac8 10\r
2b3687db 11Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>\r
f22f941e 12This program and the accompanying materials are licensed and made available under \r
13the terms and conditions of the BSD License that accompanies this distribution. \r
14The full text of the license may be found at\r
15http://opensource.org/licenses/bsd-license.php. \r
16 \r
17THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
18WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
79964ac8 19\r
79964ac8 20 @par Revision Reference:\r
f22f941e 21 GUIDs defined in SmmCis spec version 0.9.\r
79964ac8 22\r
23**/\r
24\r
25#ifndef _EFI_SMM_PEI_SMRAM_MEMORY_RESERVE_H_\r
26#define _EFI_SMM_PEI_SMRAM_MEMORY_RESERVE_H_\r
27\r
28#define EFI_SMM_PEI_SMRAM_MEMORY_RESERVE \\r
29 { \\r
30 0x6dadf1d1, 0xd4cc, 0x4910, {0xbb, 0x6e, 0x82, 0xb1, 0xfd, 0x80, 0xff, 0x3d } \\r
31 }\r
32\r
ab6fc27a 33/**\r
34* GUID specific data structure of HOB for reserving SMRAM regions.\r
35*\r
36* Inconsistent with specification here: \r
37* EFI_HOB_SMRAM_DESCRIPTOR_BLOCK has been changed to EFI_SMRAM_HOB_DESCRIPTOR_BLOCK.\r
38* This inconsistency is kept in code in order for backward compatibility.\r
39**/\r
79964ac8 40typedef struct {\r
444bf90d 41 ///\r
42 /// Designates the number of possible regions in the system\r
43 /// that can be usable for SMRAM. \r
44 ///\r
7ae58ec2 45 /// Inconsistent with specification here: \r
46 /// In Framework SMM CIS 0.91 specification, it defines the field type as UINTN.\r
47 /// However, HOBs are supposed to be CPU neutral, so UINT32 should be used instead.\r
48 ///\r
49 UINT32 NumberOfSmmReservedRegions;\r
444bf90d 50 ///\r
51 /// Used throughout this protocol to describe the candidate\r
52 /// regions for SMRAM that are supported by this platform. \r
53 ///\r
79964ac8 54 EFI_SMRAM_DESCRIPTOR Descriptor[1];\r
a5baf845 55} EFI_SMRAM_HOB_DESCRIPTOR_BLOCK;\r
79964ac8 56\r
57extern EFI_GUID gEfiSmmPeiSmramMemoryReserveGuid;\r
58\r
59#endif\r
ab6fc27a 60\r