This is a special GUID extension Hob to describe SMRAM memory regions
Cc: Michael D Kinney <michael.d.kin...@intel.com>
Cc: Liming Gao <liming....@intel.com>
Cc: Ray Ni <ray...@intel.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2020
Signed-off-by: Marc W Chen <marc.w.c...@intel.com>
---
MdePkg/Include/Guid/SmramMemoryReserve.h | 45 ++++++++++++++++++++++++++++++++
MdePkg/MdePkg.dec | 3 +++
2 files changed, 48 insertions(+)
create mode 100644 MdePkg/Include/Guid/SmramMemoryReserve.h
diff --git a/MdePkg/Include/Guid/SmramMemoryReserve.h
b/MdePkg/Include/Guid/SmramMemoryReserve.h
new file mode 100644
index 0000000000..3ba8c6f526
--- /dev/null
+++ b/MdePkg/Include/Guid/SmramMemoryReserve.h
@@ -0,0 +1,45 @@
+/** @file
+ This is a special GUID extension Hob to describe SMRAM memory 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.
+
+ Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+ @par Revision Reference:
+ GUIDs defined in PI SPEC version 1.5.
+
+**/
+
+#ifndef _SMRAM_MEMORY_RESERVE_H_
+#define _SMRAM_MEMORY_RESERVE_H_
+
+#define EFI_SMM_SMRAM_MEMORY_GUID \
+ { \
+ 0x6dadf1d1, 0xd4cc, 0x4910, {0xbb, 0x6e, 0x82, 0xb1, 0xfd, 0x80, 0xff,
0x3d } \
+ }
+
+/**
+* The GUID extension hob is to describe SMRAM memory regions supported by the
platform.
+**/
+typedef struct {
+ ///
+ /// Designates the number of possible regions in the system
+ /// that can be usable for SMRAM.
+ ///
+ 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 gEfiSmmSmramMemoryReserveGuid;
+
+#endif
+
diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
index b382efd578..ccfa220a02 100644
--- a/MdePkg/MdePkg.dec
+++ b/MdePkg/MdePkg.dec
@@ -749,6 +749,9 @@
## Include/Guid/GraphicsInfoHob.h
gEfiGraphicsDeviceInfoHobGuid = { 0xe5cb2ac9, 0xd35d, 0x4430, { 0x93,
0x6e, 0x1d, 0xe3, 0x32, 0x47, 0x8d, 0xe7 }}
+ ## Include/Guid/SmramMemoryReserve.h
+ gEfiSmmSmramMemoryReserveGuid = { 0x6dadf1d1, 0xd4cc, 0x4910, { 0xbb,
0x6e, 0x82, 0xb1, 0xfd, 0x80, 0xff, 0x3d }}
+
#
# GUID defined in PI1.6
#
--
2.16.2.windows.1
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