1 files changed, 56 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h b/src/VBox/Devices/EFI/Firmware/StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h
new file mode 100644
index 00000000..1d98d601
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h
@@ -0,0 +1,56 @@
+/** @file
+  Definition of GUIDed HOB for reserving MMRAM regions.
+
+  This file defines:
+  * the GUID used to identify the GUID HOB for reserving MMRAM regions.
+  * the data structure of MMRAM descriptor to describe MMRAM candidate regions
+  * values of state of MMRAM candidate regions
+  * the GUID specific data structure of HOB for reserving MMRAM regions.
+  This GUIDed HOB can be used to convey the existence of the T-SEG reservation and H-SEG usage
+
+Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
+
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  @par Revision Reference:
+  GUIDs defined in MmCis spec version 0.9.
+
+**/
+
+#ifndef _EFI_MM_PEI_MMRAM_MEMORY_RESERVE_H_
+#define _EFI_MM_PEI_MMRAM_MEMORY_RESERVE_H_
+
+#define EFI_MM_PEI_MMRAM_MEMORY_RESERVE \
+  { \
+    0x0703f912, 0xbf8d, 0x4e2a, {0xbe, 0x07, 0xab, 0x27, 0x25, 0x25, 0xc5, 0x92 } \
+  }
+
+/**
+* GUID specific data structure of HOB for reserving MMRAM regions.
+*
+* Inconsistent with specification here:
+* EFI_HOB_MMRAM_DESCRIPTOR_BLOCK has been changed to EFI_MMRAM_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 MMRAM.
+  ///
+  /// Inconsistent with specification here:
+  /// In Framework MM 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                NumberOfMmReservedRegions;
+  ///
+  /// Used throughout this protocol to describe the candidate
+  /// regions for MMRAM that are supported by this platform.
+  ///
+  EFI_MMRAM_DESCRIPTOR  Descriptor[1];
+} EFI_MMRAM_HOB_DESCRIPTOR_BLOCK;
+
+extern EFI_GUID gEfiMmPeiSmramMemoryReserveGuid;
+
+#endif
+