diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f10/Proc/Mem/Feat/MEMCLR/mfmemclr.c')
| -rwxr-xr-x | src/vendorcode/amd/agesa/f10/Proc/Mem/Feat/MEMCLR/mfmemclr.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f10/Proc/Mem/Feat/MEMCLR/mfmemclr.c b/src/vendorcode/amd/agesa/f10/Proc/Mem/Feat/MEMCLR/mfmemclr.c new file mode 100755 index 0000000000..8a07406c37 --- /dev/null +++ b/src/vendorcode/amd/agesa/f10/Proc/Mem/Feat/MEMCLR/mfmemclr.c @@ -0,0 +1,147 @@ +/** + * @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) + * @e \$Revision: 44323 $ @e \$Date: 2010-12-22 01:24:58 -0700 (Wed, 22 Dec 2010) $ + * + **/ +/***************************************************************************** + * + * 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 "mfmemclr.h" +#include "Ids.h" +#include "merrhdl.h" +#include "Filecode.h" +#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->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 mini-second 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; +} + |