diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/Mem/Tech/DDR3/mtot3.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/Mem/Tech/DDR3/mtot3.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/Mem/Tech/DDR3/mtot3.c b/src/vendorcode/amd/agesa/f14/Proc/Mem/Tech/DDR3/mtot3.c new file mode 100644 index 0000000000..2163ccf919 --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/Mem/Tech/DDR3/mtot3.c @@ -0,0 +1,170 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * mtot3.c + * + * Technology Non-SPD Timings for DDR3 + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: (Mem/Tech/DDR3) + * @e \$Revision: 38442 $ @e \$Date: 2010-09-24 06:39:57 +0800 (Fri, 24 Sep 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. + * + * *************************************************************************** + * + */ + +/* + *---------------------------------------------------------------------------- + * MODULES USED + * + *---------------------------------------------------------------------------- + */ + + + +#include "AGESA.h" +#include "Ids.h" +#include "mm.h" +#include "mn.h" +#include "mu.h" +#include "mt.h" +#include "mtot3.h" +#include "Filecode.h" +CODE_GROUP (G1_PEICC) +RDATA_GROUP (G1_PEICC) + +#define FILECODE PROC_MEM_TECH_DDR3_MTOT3_FILECODE +/*---------------------------------------------------------------------------- + * DEFINITIONS AND MACROS + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * TYPEDEFS AND STRUCTURES + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * PROTOTYPES OF LOCAL FUNCTIONS + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * EXPORTED FUNCTIONS + * + *---------------------------------------------------------------------------- + */ + +/* -----------------------------------------------------------------------------*/ +/** + * + * This function adjusts the Twrwr value for DDR3. + * + * @param[in,out] *TechPtr - Pointer to the MEM_TECH_BLOCK + * + */ + +VOID +MemTAdjustTwrwr3 ( + IN OUT MEM_TECH_BLOCK *TechPtr + ) +{ + DCT_STRUCT *DCTPtr; + + DCTPtr = TechPtr->NBPtr->DCTPtr; + + // For DDR3, value 0000b-0001b and >= 1011b of Twrwr is reserved. + if (DCTPtr->Timings.Twrwr < 2) { + DCTPtr->Timings.Twrwr = 2; + } else if (DCTPtr->Timings.Twrwr > 10) { + DCTPtr->Timings.Twrwr = 10; + } +} + +/* -----------------------------------------------------------------------------*/ +/** + * + * This function adjusts the Twrrd value for DDR3. + * + * @param[in,out] *TechPtr - Pointer to the MEM_TECH_BLOCK + * + */ + +VOID +MemTAdjustTwrrd3 ( + IN OUT MEM_TECH_BLOCK *TechPtr + ) +{ + DCT_STRUCT *DCTPtr; + + DCTPtr = TechPtr->NBPtr->DCTPtr; + + // For DDR3, value 0000b, 0001b, and > 1010b of Twrrd is reserved. + if (DCTPtr->Timings.Twrrd < 2) { + DCTPtr->Timings.Twrrd = 2; + } else if (DCTPtr->Timings.Twrrd > 10) { + DCTPtr->Timings.Twrrd = 10; + } +} + +/* -----------------------------------------------------------------------------*/ +/** + * + * This function gets the LD value for DDR3. + * + * @param[in,out] *TechPtr - Pointer to the MEM_TECH_BLOCK + * + * @return Value of LD + */ + +INT8 +MemTGetLD3 ( + IN OUT MEM_TECH_BLOCK *TechPtr + ) +{ + INT8 LD; + MEM_NB_BLOCK *NBPtr; + NBPtr = TechPtr->NBPtr; + // + // For DDR3, BIOS calculates the latency difference (Ld) as equal to read CAS latency minus write CAS + // latency, in MEMCLKs (see F2x[1, 0]88[Tcl] and F2x[1, 0]84[Tcwl]) which can be a negative or positive + // value. + // + LD = ((INT8) NBPtr->GetBitField (NBPtr, BFTcl) + 4) - ((INT8) NBPtr->GetBitField (NBPtr, BFTcwl) + 5); + + return LD; +} |