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+/** @file
+*
+* Copyright (c) 2011, ARM Limited. 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.
+*
+**/
+
+#ifndef __ARM_GLOBAL_VARIABLE_GUID_H__
+#define __ARM_GLOBAL_VARIABLE_GUID_H__
+
+#define ARM_HOB_GLOBAL_VARIABLE_GUID \
+ { 0xc3253c90, 0xa24f, 0x4599, { 0xa6, 0x64, 0x1f, 0x88, 0x13, 0x77, 0x8f, 0xc9} };
+
+extern EFI_GUID gArmGlobalVariableGuid;
+
+///
+/// Describes all memory ranges used during the HOB producer
+/// phase that exist outside the HOB list. This HOB type
+/// describes how memory is used, not the physical attributes of memory.
+///
+typedef struct {
+ ///
+ /// The Guid HOB header. Header.HobType = EFI_HOB_TYPE_GUID_EXTENSION
+ /// and Header.Name = gArmGlobalVariableGuid
+ ///
+ EFI_HOB_GUID_TYPE Header;
+
+ ///
+ /// The base address of memory allocated by this HOB. Type
+ /// EFI_PHYSICAL_ADDRESS is defined in AllocatePages() in the UEFI 2.0
+ /// specification.
+ ///
+ EFI_PHYSICAL_ADDRESS GlobalVariableBase;
+
+ ///
+ /// The length in bytes of memory allocated by this HOB.
+ ///
+ UINT32 GlobalVariableSize;
+} ARM_HOB_GLOBAL_VARIABLE;
+
+#endif