Frank Vibrans | 2b4c831 | 2011-02-14 18:30:54 +0000 | [diff] [blame] | 1 | /* $NoKeywords:$ */ |
| 2 | /** |
| 3 | * @file |
| 4 | * |
| 5 | * mtot3.c |
| 6 | * |
| 7 | * Technology Non-SPD Timings for DDR3 |
| 8 | * |
| 9 | * @xrefitem bom "File Content Label" "Release Content" |
| 10 | * @e project: AGESA |
| 11 | * @e sub-project: (Mem/Tech/DDR3) |
| 12 | * @e \$Revision: 38442 $ @e \$Date: 2010-09-24 06:39:57 +0800 (Fri, 24 Sep 2010) $ |
| 13 | * |
| 14 | **/ |
| 15 | /* |
| 16 | ***************************************************************************** |
| 17 | * |
| 18 | * Copyright (c) 2011, Advanced Micro Devices, Inc. |
| 19 | * All rights reserved. |
Edward O'Callaghan | 1542a6f | 2014-07-06 19:24:06 +1000 | [diff] [blame] | 20 | * |
Frank Vibrans | 2b4c831 | 2011-02-14 18:30:54 +0000 | [diff] [blame] | 21 | * Redistribution and use in source and binary forms, with or without |
| 22 | * modification, are permitted provided that the following conditions are met: |
| 23 | * * Redistributions of source code must retain the above copyright |
| 24 | * notice, this list of conditions and the following disclaimer. |
| 25 | * * Redistributions in binary form must reproduce the above copyright |
| 26 | * notice, this list of conditions and the following disclaimer in the |
| 27 | * documentation and/or other materials provided with the distribution. |
Edward O'Callaghan | 1542a6f | 2014-07-06 19:24:06 +1000 | [diff] [blame] | 28 | * * Neither the name of Advanced Micro Devices, Inc. nor the names of |
| 29 | * its contributors may be used to endorse or promote products derived |
Frank Vibrans | 2b4c831 | 2011-02-14 18:30:54 +0000 | [diff] [blame] | 30 | * from this software without specific prior written permission. |
Edward O'Callaghan | 1542a6f | 2014-07-06 19:24:06 +1000 | [diff] [blame] | 31 | * |
Frank Vibrans | 2b4c831 | 2011-02-14 18:30:54 +0000 | [diff] [blame] | 32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| 33 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 34 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 35 | * DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY |
| 36 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 37 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 38 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 39 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 40 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 41 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
Edward O'Callaghan | 1542a6f | 2014-07-06 19:24:06 +1000 | [diff] [blame] | 42 | * |
Frank Vibrans | 2b4c831 | 2011-02-14 18:30:54 +0000 | [diff] [blame] | 43 | * *************************************************************************** |
| 44 | * |
| 45 | */ |
| 46 | |
| 47 | /* |
| 48 | *---------------------------------------------------------------------------- |
| 49 | * MODULES USED |
| 50 | * |
| 51 | *---------------------------------------------------------------------------- |
| 52 | */ |
| 53 | |
| 54 | |
| 55 | |
| 56 | #include "AGESA.h" |
| 57 | #include "Ids.h" |
| 58 | #include "mm.h" |
| 59 | #include "mn.h" |
| 60 | #include "mu.h" |
| 61 | #include "mt.h" |
| 62 | #include "mtot3.h" |
| 63 | #include "Filecode.h" |
| 64 | CODE_GROUP (G1_PEICC) |
| 65 | RDATA_GROUP (G1_PEICC) |
| 66 | |
| 67 | #define FILECODE PROC_MEM_TECH_DDR3_MTOT3_FILECODE |
| 68 | /*---------------------------------------------------------------------------- |
| 69 | * DEFINITIONS AND MACROS |
| 70 | * |
| 71 | *---------------------------------------------------------------------------- |
| 72 | */ |
| 73 | |
| 74 | /*---------------------------------------------------------------------------- |
| 75 | * TYPEDEFS AND STRUCTURES |
| 76 | * |
| 77 | *---------------------------------------------------------------------------- |
| 78 | */ |
| 79 | |
| 80 | /*---------------------------------------------------------------------------- |
| 81 | * PROTOTYPES OF LOCAL FUNCTIONS |
| 82 | * |
| 83 | *---------------------------------------------------------------------------- |
| 84 | */ |
| 85 | |
| 86 | /*---------------------------------------------------------------------------- |
| 87 | * EXPORTED FUNCTIONS |
| 88 | * |
| 89 | *---------------------------------------------------------------------------- |
| 90 | */ |
| 91 | |
| 92 | /* -----------------------------------------------------------------------------*/ |
| 93 | /** |
| 94 | * |
| 95 | * This function adjusts the Twrwr value for DDR3. |
| 96 | * |
| 97 | * @param[in,out] *TechPtr - Pointer to the MEM_TECH_BLOCK |
| 98 | * |
| 99 | */ |
| 100 | |
| 101 | VOID |
| 102 | MemTAdjustTwrwr3 ( |
| 103 | IN OUT MEM_TECH_BLOCK *TechPtr |
| 104 | ) |
| 105 | { |
| 106 | DCT_STRUCT *DCTPtr; |
| 107 | |
| 108 | DCTPtr = TechPtr->NBPtr->DCTPtr; |
| 109 | |
| 110 | // For DDR3, value 0000b-0001b and >= 1011b of Twrwr is reserved. |
| 111 | if (DCTPtr->Timings.Twrwr < 2) { |
| 112 | DCTPtr->Timings.Twrwr = 2; |
| 113 | } else if (DCTPtr->Timings.Twrwr > 10) { |
| 114 | DCTPtr->Timings.Twrwr = 10; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | /* -----------------------------------------------------------------------------*/ |
| 119 | /** |
| 120 | * |
| 121 | * This function adjusts the Twrrd value for DDR3. |
| 122 | * |
| 123 | * @param[in,out] *TechPtr - Pointer to the MEM_TECH_BLOCK |
| 124 | * |
| 125 | */ |
| 126 | |
| 127 | VOID |
| 128 | MemTAdjustTwrrd3 ( |
| 129 | IN OUT MEM_TECH_BLOCK *TechPtr |
| 130 | ) |
| 131 | { |
| 132 | DCT_STRUCT *DCTPtr; |
| 133 | |
| 134 | DCTPtr = TechPtr->NBPtr->DCTPtr; |
| 135 | |
| 136 | // For DDR3, value 0000b, 0001b, and > 1010b of Twrrd is reserved. |
| 137 | if (DCTPtr->Timings.Twrrd < 2) { |
| 138 | DCTPtr->Timings.Twrrd = 2; |
| 139 | } else if (DCTPtr->Timings.Twrrd > 10) { |
| 140 | DCTPtr->Timings.Twrrd = 10; |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | /* -----------------------------------------------------------------------------*/ |
| 145 | /** |
| 146 | * |
| 147 | * This function gets the LD value for DDR3. |
| 148 | * |
| 149 | * @param[in,out] *TechPtr - Pointer to the MEM_TECH_BLOCK |
| 150 | * |
| 151 | * @return Value of LD |
| 152 | */ |
| 153 | |
| 154 | INT8 |
| 155 | MemTGetLD3 ( |
| 156 | IN OUT MEM_TECH_BLOCK *TechPtr |
| 157 | ) |
| 158 | { |
| 159 | INT8 LD; |
| 160 | MEM_NB_BLOCK *NBPtr; |
| 161 | NBPtr = TechPtr->NBPtr; |
| 162 | // |
| 163 | // For DDR3, BIOS calculates the latency difference (Ld) as equal to read CAS latency minus write CAS |
| 164 | // latency, in MEMCLKs (see F2x[1, 0]88[Tcl] and F2x[1, 0]84[Tcwl]) which can be a negative or positive |
| 165 | // value. |
| 166 | // |
| 167 | LD = ((INT8) NBPtr->GetBitField (NBPtr, BFTcl) + 4) - ((INT8) NBPtr->GetBitField (NBPtr, BFTcwl) + 5); |
| 168 | |
| 169 | return LD; |
| 170 | } |