diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuLowPwrPstate.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuLowPwrPstate.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuLowPwrPstate.c b/src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuLowPwrPstate.c new file mode 100644 index 0000000000..0b29512dac --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/CPU/Feature/cpuLowPwrPstate.c @@ -0,0 +1,206 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * AMD AGESA CPU create low power P-state for PROCHOT_L throttling support code. + * + * Contains code that declares the AGESA CPU low power P-state related APIs + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: CPU/Feature + * @e \$Revision: 35155 $ @e \$Date: 2010-07-16 17:11:52 +0800 (Fri, 16 Jul 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. + * + * *************************************************************************** + * + */ + +/*---------------------------------------------------------------------------------------- + * M O D U L E S U S E D + *---------------------------------------------------------------------------------------- + */ +#include "AGESA.h" +#include "cpuFamilyTranslation.h" +#include "OptionMultiSocket.h" +#include "cpuRegisters.h" +#include "cpuApicUtilities.h" +#include "cpuFeatures.h" +#include "cpuLowPwrPstate.h" +#include "Filecode.h" +CODE_GROUP (G1_PEICC) +RDATA_GROUP (G1_PEICC) + +#define FILECODE PROC_CPU_FEATURE_CPULOWPWRPSTATE_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 + *---------------------------------------------------------------------------------------- + */ +VOID +STATIC +EnableLowPwrPstateOnSocket ( + IN VOID *EntryPoint, + IN AMD_CONFIG_PARAMS *StdHeader, + IN AMD_CPU_EARLY_PARAMS *CpuEarlyParams + ); + +/*---------------------------------------------------------------------------------------- + * E X P O R T E D F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ +extern CPU_FAMILY_SUPPORT_TABLE LowPwrPstateFamilyServiceTable; +extern OPTION_MULTISOCKET_CONFIGURATION OptionMultiSocketConfiguration; + +/*---------------------------------------------------------------------------------------*/ +/** + * Should Low Power P-state be enabled + * If all processors support Low Power P-state, reture TRUE, otherwise reture FALSE + * + * @param[in] PlatformConfig Contains the runtime modifiable feature input data. + * @param[in] StdHeader Config Handle for library, services. + * + * @retval TRUE Low Power P-state is supported. + * @retval FALSE Low Power P-state cannot be enabled. + * + */ +BOOLEAN +STATIC +IsLowPwrPstateFeatureSupported ( + IN PLATFORM_CONFIGURATION *PlatformConfig, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT32 Socket; + BOOLEAN IsSupported; + LOW_PWR_PSTATE_FAMILY_SERVICES *FamilyServices; + + IsSupported = FALSE; + for (Socket = 0; Socket < GetPlatformNumberOfSockets (); Socket++) { + if (IsProcessorPresent (Socket, StdHeader)) { + GetFeatureServicesOfSocket (&LowPwrPstateFamilyServiceTable, Socket, &FamilyServices, StdHeader); + if (FamilyServices != NULL) { + if (FamilyServices->IsLowPwrPstateSupported (FamilyServices, PlatformConfig, Socket, StdHeader)) { + IsSupported = TRUE; + } else { + IsSupported = FALSE; + break; + } + } else { + IsSupported = FALSE; + break; + } + } + } + IDS_OPTION_HOOK (IDS_LOW_POWER_PSTATE, &IsSupported, StdHeader); + return IsSupported; +} + +/*---------------------------------------------------------------------------------------*/ +/** + * Enable low power P-state + * + * @param[in] EntryPoint Timepoint designator. + * @param[in] PlatformConfig Contains the runtime modifiable feature input data. + * @param[in] StdHeader Config Handle for library, services. + * + * @retval AGESA_SUCCESS Always succeeds. + * + */ +AGESA_STATUS +STATIC +InitializeLowPwrPstateFeature ( + IN UINT64 EntryPoint, + IN PLATFORM_CONFIGURATION *PlatformConfig, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + AP_TASK TaskPtr; + AMD_CPU_EARLY_PARAMS CpuEarlyParams; + + IDS_HDT_CONSOLE (CPU_TRACE, " Low pwr P-state is enabled\n"); + + CpuEarlyParams.PlatformConfig = *PlatformConfig; + + TaskPtr.FuncAddress.PfApTaskIC = EnableLowPwrPstateOnSocket; + TaskPtr.DataTransfer.DataSizeInDwords = 2; + TaskPtr.DataTransfer.DataPtr = &EntryPoint; + TaskPtr.DataTransfer.DataTransferFlags = 0; + TaskPtr.ExeFlags = PASS_EARLY_PARAMS; + OptionMultiSocketConfiguration.BscRunCodeOnAllSystemCore0s (&TaskPtr, StdHeader, &CpuEarlyParams); + + return AGESA_SUCCESS; +} + +/*---------------------------------------------------------------------------------------*/ +/** + * 'Local' core 0 task to enable low power P-state + * + * @param[in] EntryPoint Timepoint designator. + * @param[in] StdHeader Config Handle for library, services. + * @param[in] CpuEarlyParams Service parameters. + * + */ +VOID +STATIC +EnableLowPwrPstateOnSocket ( + IN VOID *EntryPoint, + IN AMD_CONFIG_PARAMS *StdHeader, + IN AMD_CPU_EARLY_PARAMS *CpuEarlyParams + ) +{ + LOW_PWR_PSTATE_FAMILY_SERVICES *FamilyServices; + + GetFeatureServicesOfCurrentCore (&LowPwrPstateFamilyServiceTable, &FamilyServices, StdHeader); + FamilyServices->EnableLowPwrPstate (FamilyServices, + &CpuEarlyParams->PlatformConfig, + *((UINT64 *) EntryPoint), + StdHeader); +} + + +CONST CPU_FEATURE_DESCRIPTOR ROMDATA CpuFeatureLowPwrPstate = +{ + LowPwrPstate, + CPU_FEAT_AFTER_PM_INIT, + IsLowPwrPstateFeatureSupported, + InitializeLowPwrPstateFeature +}; |