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/* $NoKeywords:$ */
/**
* @file
*
* mfmemclr.c
*
* Feature function for memory clear operation
*
* @xrefitem bom "File Content Label" "Release Content"
* @e project: AGESA
* @e sub-project: (Mem/Feat/Memclr)
*
**/
/*****************************************************************************
*
* Copyright (c) 2008 - 2012, 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 "mfmemclr.h"
#include "Ids.h"
#include "merrhdl.h"
#include "Filecode.h"
CODE_GROUP (G2_PEI)
RDATA_GROUP (G2_PEI)
#define FILECODE PROC_MEM_FEAT_MEMCLR_MFMEMCLR_FILECODE
/*----------------------------------------------------------------------------
* DEFINITIONS AND MACROS
*
*----------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
* TYPEDEFS AND STRUCTURES
*
*----------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------
* PROTOTYPES OF LOCAL FUNCTIONS
*
*----------------------------------------------------------------------------
*/
/*
*-----------------------------------------------------------------------------
* EXPORTED FUNCTIONS
*
*-----------------------------------------------------------------------------
*/
/* -----------------------------------------------------------------------------*/
/**
*
*
* Initiates memory clear operation on one node with Dram on it.
*
* @param[in,out] *NBPtr - Pointer to the MEM_NB_BLOCK
*
*/
BOOLEAN
MemFMctMemClr_Init (
IN OUT MEM_NB_BLOCK *NBPtr
)
{
AGESA_TESTPOINT (TpProcMemMemClr, &NBPtr->MemPtr->StdHeader);
if (NBPtr->RefPtr->EnableMemClr == TRUE) {
if (NBPtr->MCTPtr->NodeMemSize != 0) {
if (!NBPtr->MemCleared) {
NBPtr->PollBitField (NBPtr, BFMemClrBusy, 0, SPECIAL_PCI_ACCESS_TIMEOUT, FALSE);
if (NBPtr->GetBitField (NBPtr, BFDramEnabled) == 1) {
NBPtr->FamilySpecificHook[BeforeMemClr] (NBPtr, NBPtr);
NBPtr->SetBitField (NBPtr, BFDramBaseAddr, 0);
NBPtr->SetBitField (NBPtr, BFMemClrInit, 1);
}
}
}
}
return TRUE;
}
/* -----------------------------------------------------------------------------*/
/**
*
*
* Ensures memory clear operation has completed on one node with Dram on it.
*
* @param[in,out] *NBPtr - Pointer to the MEM_NB_BLOCK
*
*/
BOOLEAN
MemFMctMemClr_Sync (
IN OUT MEM_NB_BLOCK *NBPtr
)
{
UINT32 MicroSecondToWait;
MicroSecondToWait = 0;
if (NBPtr->RefPtr->EnableMemClr == TRUE) {
if (NBPtr->MCTPtr->NodeMemSize != 0) {
// Calculate Timeout value:
// Timeout (in microsecond) = Memory Size * 1.5 ns / 8 Byte * 4 (Margin) * 1000 (change millisecond to us)
// NodeMemSize is system address right shifted by 16, so shift it 4 bits to right to convert it to MB.
// 1.5 / 8 * 4 * 1000 = 750
MicroSecondToWait = (NBPtr->MCTPtr->NodeMemSize >> 4) * 750;
if (!NBPtr->MemCleared) {
NBPtr->PollBitField (NBPtr, BFMemClrBusy, 0, MicroSecondToWait, FALSE);
NBPtr->PollBitField (NBPtr, BFMemCleared, 1, MicroSecondToWait, FALSE);
NBPtr->SetBitField (NBPtr, BFDramBaseAddr, NBPtr->MCTPtr->NodeSysBase >> (27 - 16));
NBPtr->MemCleared = TRUE;
}
}
}
return TRUE;
}
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