src/vendorcode/amd/agesa/f10/Proc/Mem/NB/DA/mnprotoda.c

/**
 * @file
 *
 * mnprotoda.c
 *
 * Northbridge support functions for Errata and early samples
 *
 * @xrefitem bom "File Content Label" "Release Content"
 * @e project: AGESA
 * @e sub-project: (Mem/NB/DA)
 * @e \$Revision: 11190 $ @e \$Date: 2009-03-02 10:39:45 -0600 (Mon, 02 Mar 2009) $
 *
 **/
/*****************************************************************************
*
* Copyright (c) 2011, 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.
* 
* ***************************************************************************
*
*/



#include "AGESA.h"
#include "mm.h"
#include "mn.h"
#include "mnda.h"
#include "Filecode.h"
#define FILECODE PROC_MEM_NB_DA_MNPROTODA_FILECODE

/* -----------------------------------------------------------------------------*/
/**
 *
 *
 *   This function executes Node memory 1GB boundary alignment.
 *
 *     @param[in,out]   *NBPtr   - Pointer to the MEM_NB_BLOCK
 *     @param[in,out]   *NodeSysLimit   - Pointer to the NodeSysLimit
 *
 */

VOID
MemPNodeMemBoundaryDA (
  IN OUT   MEM_NB_BLOCK *NBPtr,
  IN OUT   UINT32 *NodeSysLimit
  )
{
  if (NBPtr->GetBitField (NBPtr, BFDdr3Mode) == 0) {
    // only apply to DDR2.
    if (*NodeSysLimit > ((UINT32)1 << (30 - 16))) {
      // if (NodeSysLimit > 1GB) then set to Node limit to 1GB boundary for each node
      *NodeSysLimit += 1;
      *NodeSysLimit &= 0xFFFFC000;
      *NodeSysLimit -= 1;
    }
  }
}