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diff --git a/src/usr/diag/prdf/common/plat/mem/prdfMemRank.H b/src/usr/diag/prdf/common/plat/mem/prdfMemRank.H
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+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/usr/diag/prdf/common/plat/mem/prdfMemRank.H $             */
+/*                                                                        */
+/* OpenPOWER HostBoot Project                                             */
+/*                                                                        */
+/* Contributors Listed Below - COPYRIGHT 2016                             */
+/* [+] International Business Machines Corp.                              */
+/*                                                                        */
+/*                                                                        */
+/* Licensed under the Apache License, Version 2.0 (the "License");        */
+/* you may not use this file except in compliance with the License.       */
+/* You may obtain a copy of the License at                                */
+/*                                                                        */
+/*     http://www.apache.org/licenses/LICENSE-2.0                         */
+/*                                                                        */
+/* Unless required by applicable law or agreed to in writing, software    */
+/* distributed under the License is distributed on an "AS IS" BASIS,      */
+/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or        */
+/* implied. See the License for the specific language governing           */
+/* permissions and limitations under the License.                         */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+
+/** @file  prdfMemRank.H
+ *  @brief Memory rank container class for Centaur MBA and P9 MCBIST.
+ */
+
+#ifndef __prdfMemRank_H
+#define __prdfMemRank_H
+
+#include <prdfAssert.h>
+
+namespace PRDF
+{
+
+//------------------------------------------------------------------------------
+//  Class MemRank
+//------------------------------------------------------------------------------
+
+/** @brief Container for a memory rank. */
+class MemRank
+{
+  public: // enums, constants
+
+    enum
+    {
+        MAX_DSLCT_PER_PORT  = 2, ///< DIMM select per port
+        MAX_RSLCT_PER_DSLCT = 4, ///< rank select per DIMM select
+
+        MAX_MRNK_PER_PORT = MAX_DSLCT_PER_PORT * MAX_RSLCT_PER_DSLCT,
+        MAX_SRNK_PER_MRNK = 8,
+    };
+
+  public: // functions
+
+    /** @brief Default constructor */
+    MemRank() :
+        iv_mrnk(0), iv_srnk(0)
+    {}
+
+    /**
+     * @brief Constructor from components.
+     * @param i_mrank The 3-bit master rank (combined DIMM slct and rank slct).
+     * @param i_srank The 3-bit slave rank.
+     */
+    explicit MemRank( uint8_t i_mrnk, uint8_t i_srnk = 0 ) :
+        iv_mrnk(i_mrnk), iv_srnk(i_srnk)
+    {
+        PRDF_ASSERT( iv_mrnk < MAX_MRNK_PER_PORT  );
+        PRDF_ASSERT( iv_srnk < MAX_SRNK_PER_MRNK );
+    }
+
+    /** @return The master rank (combined DIMM slct and rank slct). */
+    uint8_t getMaster() const { return iv_mrnk; }
+
+    /** @return The slave rank. */
+    uint8_t getSlave() const { return iv_srnk; }
+
+    /** @return The master DIMM select. */
+    uint8_t getDimmSlct() const { return iv_mrnk >> 2; }
+
+    /** @return The master rank select. */
+    uint8_t getRankSlct() const { return iv_mrnk & 0x3; }
+
+    /** @brief '==' operator */
+    bool operator==( const MemRank & i_rank ) const
+    {
+        return ( (this->getMaster() == i_rank.getMaster()) &&
+                 (this->getSlave()  == i_rank.getSlave() )    );
+    }
+
+    /** @brief '<' operator */
+    bool operator<( const MemRank & i_rank ) const
+    {
+        return ( ( (this->getMaster() <  i_rank.getMaster())    ) ||
+                 ( (this->getMaster() == i_rank.getMaster()) &&
+                   (this->getSlave()  <  i_rank.getSlave() )    )    );
+    }
+
+  private: // data
+
+    uint8_t iv_mrnk; ///< Master rank (combined DIMM slct and rank slct)
+    uint8_t iv_srnk; ///< Slave rank
+};
+
+} // end namespace PRDF
+
+#endif // __prdfMemRank_H
+