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/* $NoKeywords:$ */
/**
* @file
*
* AMD Family_14 Optimizations for lower power consumption
*
* Sets some registers for tablet parts at AmdInitEarly.
*
* @xrefitem bom "File Content Label" "Release Content"
* @e project: AGESA
* @e sub-project: CPU/Family/F14
* @e \$Revision: 45578 $ @e \$Date: 2011-01-18 19:20:41 -0500 (Tue, 18 Jan 2011) $
*
*/
/*
******************************************************************************
*
* 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.
*
******************************************************************************
*/
/*----------------------------------------------------------------------------------------
* M O D U L E S U S E D
*----------------------------------------------------------------------------------------
*/
#include "AGESA.h"
#include "amdlib.h"
#include "cpuFamilyTranslation.h"
#include "cpuF14PowerMgmt.h"
#include "cpuF14LowPowerInit.h"
#include "Filecode.h"
#define FILECODE PROC_CPU_FAMILY_0X14_CPUF14LOWPOWERINIT_FILECODE
/*----------------------------------------------------------------------------------------
* D E F I N I T I O N S A N D M A C R O S
*----------------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------------------
* T Y P E D E F S A N D S T R U C T U R E S
*----------------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------------------
* 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
*----------------------------------------------------------------------------------------
*/
/*----------------------------------------------------------------------------------------
* E X P O R T E D F U N C T I O N S
*----------------------------------------------------------------------------------------
*/
/*---------------------------------------------------------------------------------------*/
/**
* Family 14h model 0 - 0xF core 0 entry point for programming registers for lower
* power consumption.
*
* Set up D18F6x94[CpuPstateThrEn, CpuPstateThr], and D18F4x134[IntRateCC6DecrRate
* according to the BKDG.
*
* @param[in] FamilySpecificServices The current Family Specific Services.
* @param[in] CpuEarlyParams Service parameters
* @param[in] StdHeader Config handle for library and services.
*
*/
VOID
F14OptimizeForLowPowerInit (
IN CPU_SPECIFIC_SERVICES *FamilySpecificServices,
IN AMD_CPU_EARLY_PARAMS *CpuEarlyParams,
IN AMD_CONFIG_PARAMS *StdHeader
)
{
UINT8 NumBoostStates;
UINT32 LocalPciRegister;
BOOLEAN OptimizeForLowPower;
BOOLEAN IsRevC;
PCI_ADDR PciAddress;
CPU_LOGICAL_ID CpuFamilyRevision;
PciAddress.AddressValue = PRODUCT_INFO_PCI_ADDR;
LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
if ((((PRODUCT_INFO_REGISTER *) &LocalPciRegister)->LowPowerDefault == 1) &&
(CpuEarlyParams->PlatformConfig.PlatformProfile.PlatformPowerPolicy == BatteryLife)) {
OptimizeForLowPower = TRUE;
} else {
OptimizeForLowPower = FALSE;
}
// Get F4x15C [4:2] NumBoostStates
// Get IsRevC
NumBoostStates = 0;
IsRevC = FALSE;
GetLogicalIdOfCurrentCore (&CpuFamilyRevision, StdHeader);
if ((CpuFamilyRevision.Revision & AMD_F14_ON_Cx) != 0) {
IsRevC = TRUE;
PciAddress.AddressValue = CPB_CTRL_PCI_ADDR;
LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
NumBoostStates = (UINT8) ((CPB_CTRL_REGISTER *) &LocalPciRegister)->NumBoostStates;
}
// F6x94[2:0] CpuPstateThr
PciAddress.AddressValue = NB_PSTATE_CFG_HIGH_PCI_ADDR;
LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
if (OptimizeForLowPower) {
((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThr = 0;
} else {
if (NumBoostStates == 0) {
((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThr = 1;
} else {
((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThr = 2;
}
}
// F6x94[3] CpuPstateThrEn = 1
((NB_PSTATE_CFG_HIGH_REGISTER *) &LocalPciRegister)->CpuPstateThrEn = 1;
LibAmdPciWrite (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
// F4x134[31:27] IntRateCC6DecrRate
PciAddress.AddressValue = CSTATE_MON_CTRL3_PCI_ADDR;
LibAmdPciRead (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
((CSTATE_MON_CTRL3_REGISTER *) &LocalPciRegister)->IntRateCC6DecrRate = (OptimizeForLowPower || IsRevC) ? 0x18 : 0x8;
LibAmdPciWrite (AccessWidth32, PciAddress, &LocalPciRegister, StdHeader);
}
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