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diff --git a/src/vendorcode/amd/pi/00670F00/Include/Topology.h b/src/vendorcode/amd/pi/00670F00/Include/Topology.h
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+/* $NoKeywords:$ */
+/**
+ * @file
+ *
+ * Topology interface definitions.
+ *
+ * Contains AMD AGESA internal interface for topology related data which
+ * is consumed by code other than Topology Services init.
+ *
+ * @xrefitem bom "File Content Label" "Release Content"
+ * @e project:      AGESA
+ * @e sub-project:  Core
+ * @e \$Revision: 309090 $   @e \$Date: 2014-12-09 12:28:05 -0600 (Tue, 09 Dec 2014) $
+ */
+ /*****************************************************************************
+ *
+ * Copyright (c) 2008 - 2015, Advanced Micro Devices, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Advanced Micro Devices, Inc. nor the names of
+ *       its contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ***************************************************************************/
+
+#ifndef _TOPOLOGY_H_
+#define _TOPOLOGY_H_
+
+// Defines for limiting data structure maximum allocation and limit checking.
+#define MAX_NODES 1
+#define MAX_SOCKETS MAX_NODES
+#define MAX_DIES 1
+
+/**
+ * Socket and Module to Node Map Item.
+ * Provide the Node Id and core id range for each module in each processor.
+ */
+typedef struct {
+  UINT8 Node;                 ///< The module's Node id.
+  UINT8 LowCore;              ///< The lowest processor core id for this module.
+  UINT8 HighCore;             ///< The highest processor core id for this module.
+  UINT8 EnabledComputeUnits;  ///< The value of Enabled for this processor module.
+  UINT8 DualCoreComputeUnits; ///< The value of DualCore for this processor module.
+  UINT8 TripleCoreComputeUnits;///< The value of TripleCore for this processor module.
+  UINT8 QuadCoreComputeUnits; ///< The value of QuadCore for this processor module.
+} SOCKET_DIE_TO_NODE_ITEM;
+
+/**
+ * Socket and Module to Node Map.
+ * This type is a pointer to the actual map, it can be used for a struct item or
+ * for typecasting a heap buffer pointer.
+ */
+typedef SOCKET_DIE_TO_NODE_ITEM (*SOCKET_DIE_TO_NODE_MAP)[MAX_SOCKETS][MAX_DIES];
+
+/**
+ * Node id to Socket Die Map Item.
+ */
+typedef struct {
+  UINT8 Socket;             ///< socket of the processor containing the Node.
+  UINT8 Die;                ///< the module in the processor which is Node.
+} NODE_TO_SOCKET_DIE_ITEM;
+
+/**
+ * Node id to Socket Die Map.
+ */
+typedef NODE_TO_SOCKET_DIE_ITEM (*NODE_TO_SOCKET_DIE_MAP)[MAX_NODES];
+
+#endif  // _TOPOLOGY_H_