efdesign98 | 84cbce2 | 2011-08-04 12:09:17 -0600 | [diff] [blame] | 1 | /* $NoKeywords:$ */ |
| 2 | /** |
| 3 | * @file |
| 4 | * |
| 5 | * AMD Family_14 Optimizations for lower power consumption |
| 6 | * |
| 7 | * Sets some registers for tablet parts at AmdInitEarly. |
| 8 | * |
| 9 | * @xrefitem bom "File Content Label" "Release Content" |
| 10 | * @e project: AGESA |
| 11 | * @e sub-project: CPU/Family/F14 |
| 12 | * @e \$Revision: 45578 $ @e \$Date: 2011-01-18 19:20:41 -0500 (Tue, 18 Jan 2011) $ |
| 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 | * |
efdesign98 | 84cbce2 | 2011-08-04 12:09:17 -0600 | [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 |
efdesign98 | 84cbce2 | 2011-08-04 12:09:17 -0600 | [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 | * |
efdesign98 | 84cbce2 | 2011-08-04 12:09:17 -0600 | [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 | * |
efdesign98 | 84cbce2 | 2011-08-04 12:09:17 -0600 | [diff] [blame] | 43 | ****************************************************************************** |
| 44 | */ |
| 45 | |
| 46 | /*---------------------------------------------------------------------------------------- |
| 47 | * M O D U L E S U S E D |
| 48 | *---------------------------------------------------------------------------------------- |
| 49 | */ |
| 50 | #include "AGESA.h" |
| 51 | #include "amdlib.h" |
| 52 | #include "cpuFamilyTranslation.h" |
| 53 | #include "cpuF14PowerMgmt.h" |
| 54 | #include "cpuF14LowPowerInit.h" |
| 55 | #include "Filecode.h" |
| 56 | |
| 57 | #define FILECODE PROC_CPU_FAMILY_0X14_CPUF14LOWPOWERINIT_FILECODE |
| 58 | |
| 59 | /*---------------------------------------------------------------------------------------- |
| 60 | * D E F I N I T I O N S A N D M A C R O S |
| 61 | *---------------------------------------------------------------------------------------- |
| 62 | */ |
| 63 | |
| 64 | /*---------------------------------------------------------------------------------------- |
| 65 | * T Y P E D E F S A N D S T R U C T U R E S |
| 66 | *---------------------------------------------------------------------------------------- |
| 67 | */ |
| 68 | |
| 69 | /*---------------------------------------------------------------------------------------- |
| 70 | * P R O T O T Y P E S O F L O C A L F U N C T I O N S |
| 71 | *---------------------------------------------------------------------------------------- |
| 72 | */ |
| 73 | |
| 74 | /*---------------------------------------------------------------------------------------- |
| 75 | * E X P O R T E D F U N C T I O N S |
| 76 | *---------------------------------------------------------------------------------------- |
| 77 | */ |
| 78 | |
| 79 | /*---------------------------------------------------------------------------------------*/ |
| 80 | /** |
| 81 | * Family 14h model 0 - 0xF core 0 entry point for programming registers for lower |
| 82 | * power consumption. |
| 83 | * |
| 84 | * Set up D18F6x94[CpuPstateThrEn, CpuPstateThr], and D18F4x134[IntRateCC6DecrRate |
| 85 | * according to the BKDG. |
| 86 | * |
| 87 | * @param[in] FamilySpecificServices The current Family Specific Services. |
| 88 | * @param[in] CpuEarlyParams Service parameters |
| 89 | * @param[in] StdHeader Config handle for library and services. |
| 90 | * |
| 91 | */ |
| 92 | VOID |
| 93 | F14OptimizeForLowPowerInit ( |
| 94 | IN CPU_SPECIFIC_SERVICES *FamilySpecificServices, |
| 95 | IN AMD_CPU_EARLY_PARAMS *CpuEarlyParams, |
| 96 | IN AMD_CONFIG_PARAMS *StdHeader |
| 97 | ) |
| 98 | { |
| 99 | UINT8 NumBoostStates; |
| 100 | UINT32 LocalPciRegister; |
| 101 | BOOLEAN OptimizeForLowPower; |
| 102 | BOOLEAN IsRevC; |
| 103 | PCI_ADDR PciAddress; |
| 104 | CPU_LOGICAL_ID CpuFamilyRevision; |
| 105 | |
| 106 | PciAddress.AddressValue = PRODUCT_INFO_PCI_ADDR; |
| 107 | LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader); |
| 108 | |
| 109 | if ((((PRODUCT_INFO_REGISTER *) &LocalPciRegister)->LowPowerDefault == 1) && |
| 110 | (CpuEarlyParams->PlatformConfig.PlatformProfile.PlatformPowerPolicy == BatteryLife)) { |
| 111 | OptimizeForLowPower = TRUE; |
| 112 | } else { |
| 113 | OptimizeForLowPower = FALSE; |
| 114 | } |
| 115 | |
| 116 | // Get F4x15C [4:2] NumBoostStates |
| 117 | // Get IsRevC |
| 118 | NumBoostStates = 0; |
| 119 | IsRevC = FALSE; |
| 120 | GetLogicalIdOfCurrentCore (&CpuFamilyRevision, StdHeader); |
| 121 | if ((CpuFamilyRevision.Revision & AMD_F14_ON_Cx) != 0) { |
| 122 | IsRevC = TRUE; |
| 123 | PciAddress.AddressValue = CPB_CTRL_PCI_ADDR; |
| 124 | LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader); |
| 125 | NumBoostStates = (UINT8) ((CPB_CTRL_REGISTER *) &LocalPciRegister)->NumBoostStates; |
| 126 | } |
| 127 | |
| 128 | // F6x94[2:0] CpuPstateThr |
| 129 | PciAddress.AddressValue = NB_PSTATE_CFG_HIGH_PCI_ADDR; |
| 130 | LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader); |
| 131 | if (OptimizeForLowPower) { |
| 132 | ((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThr = 0; |
| 133 | } else { |
| 134 | if (NumBoostStates == 0) { |
| 135 | ((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThr = 1; |
| 136 | } else { |
| 137 | ((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThr = 2; |
| 138 | } |
| 139 | } |
| 140 | // F6x94[3] CpuPstateThrEn = 1 |
| 141 | ((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThrEn = 1; |
| 142 | LibAmdPciWrite (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader); |
| 143 | |
| 144 | // F4x134[31:27] IntRateCC6DecrRate |
| 145 | PciAddress.AddressValue = CSTATE_MON_CTRL3_PCI_ADDR; |
| 146 | LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader); |
| 147 | ((CSTATE_MON_CTRL3_REGISTER *) &LocalPciRegister)->IntRateCC6DecrRate = (OptimizeForLowPower || IsRevC) ? 0x18 : 0x8; |
| 148 | LibAmdPciWrite (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader); |
| 149 | } |