diff options
Diffstat (limited to 'ReferenceCode/Chipset/SystemAgent/SaInit/Pei/SaOcInit.c')
| -rw-r--r-- | ReferenceCode/Chipset/SystemAgent/SaInit/Pei/SaOcInit.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/ReferenceCode/Chipset/SystemAgent/SaInit/Pei/SaOcInit.c b/ReferenceCode/Chipset/SystemAgent/SaInit/Pei/SaOcInit.c new file mode 100644 index 0000000..80a1ffb --- /dev/null +++ b/ReferenceCode/Chipset/SystemAgent/SaInit/Pei/SaOcInit.c @@ -0,0 +1,189 @@ +/** @file + OC System Agent Early Post initializations. + +@copyright + Copyright (c) 2011 - 2012 Intel Corporation. All rights reserved + This software and associated documentation (if any) is furnished + under a license and may only be used or copied in accordance + with the terms of the license. Except as permitted by such + license, no part of this software or documentation may be + reproduced, stored in a retrieval system, or transmitted in any + form or by any means without the express written consent of + Intel Corporation. + + This file contains an 'Intel Peripheral Driver' and uniquely + identified as "Intel Reference Module" and is + licensed for Intel CPUs and chipsets under the terms of your + license agreement with Intel or your vendor. This file may + be modified by the user, subject to additional terms of the + license agreement +**/ + +/// +/// External include files do NOT need to be explicitly specified in real EDKII +/// environment +/// +#if !defined(EDK_RELEASE_VERSION) || (EDK_RELEASE_VERSION < 0x00020000) +#include "EdkIIGluePeim.h" +#include "SaOcInit.h" +#endif + +EFI_STATUS +SaOcInit ( + IN EFI_PEI_SERVICES **PeiServices, + IN SA_PLATFORM_POLICY_PPI *SaPlatformPolicyPpi + ) +/** + Initializes Overclocking settings in the processor. + + @param[in] PeiServices - General purpose services available to every PEIM. + @param[in] OverclockingtConfig Pointer to Policy protocol instance + + @retval EFI_SUCCESS +**/ +{ + EFI_STATUS Status; + OC_CAPABILITIES_ITEM OcCaps; + VOLTAGE_FREQUENCY_ITEM CurrentVfItem; + VOLTAGE_FREQUENCY_ITEM RequestedVfItem; + UINT32 LibStatus; + UINT8 DomainId; + BOOLEAN VfUpdateNeeded; + WDT_PPI *gWdtPei; + + LibStatus = 0; + VfUpdateNeeded = FALSE; + + if (SaPlatformPolicyPpi->OcConfig->OcSupport == 0){ + /// + /// Overclocking is disabled + /// + DEBUG ((EFI_D_ERROR, "(OC) Overclocking is disabled. Bypassing SA overclocking flow.\n")); + return EFI_SUCCESS; + } + + Status = EFI_SUCCESS; + ZeroMem(&CurrentVfItem,sizeof(CurrentVfItem)); + ZeroMem(&RequestedVfItem,sizeof(RequestedVfItem)); + + // + // Locate WDT_PPI (ICC WDT PPI) + // + Status = PeiServicesLocatePpi ( + &gWdtPpiGuid, + 0, + NULL, + (VOID **) &gWdtPei + ); + ASSERT_EFI_ERROR (Status); + + /// + /// We will loop on the CPU domains to manage the voltage/frequency settings + /// + for (DomainId = OC_LIB_DOMAIN_ID_GT; DomainId <= OC_LIB_DOMAIN_ID_IOD; DomainId++) { + /// + /// Only GT, Uncore, IOA, and IOD are valid for System Agent + /// + if ((DomainId == OC_LIB_DOMAIN_ID_GT) ||(DomainId == OC_LIB_DOMAIN_ID_UNCORE) || + (DomainId == OC_LIB_DOMAIN_ID_IOA) || (DomainId == OC_LIB_DOMAIN_ID_IOD)){ + /// + /// Get OC Capabilities of the domain + /// + ZeroMem(&OcCaps,sizeof(OcCaps)); + OcCaps.DomainId = DomainId; + Status = GetOcCapabilities(&OcCaps,&LibStatus); + + if (LibStatus == OC_LIB_COMPLETION_CODE_SUCCESS){ + /// + /// If any OC is supported on this domain, then proceed + /// + if (OcCaps.RatioOcSupported || OcCaps.VoltageOverridesSupported || OcCaps.VoltageOffsetSupported){ + /// + /// Need to populate the user requested settings from the platform policy + /// to determine if OC changes are desired. + /// + ZeroMem(&CurrentVfItem,sizeof(CurrentVfItem)); + CurrentVfItem.DomainId = DomainId; + + /// + /// Get a copy of the current domain VfSettings from the Mailbox Library + /// + Status = GetVoltageFrequencyItem(&CurrentVfItem,&LibStatus); + if ((Status != EFI_SUCCESS) || (LibStatus != OC_LIB_COMPLETION_CODE_SUCCESS)){ + continue; + } + + /// + /// Populate the user requested VfSettings struct + /// + ZeroMem(&RequestedVfItem,sizeof(RequestedVfItem)); + RequestedVfItem.DomainId = DomainId; + if (DomainId == OC_LIB_DOMAIN_ID_GT){ + RequestedVfItem.VfSettings.MaxOcRatio = (UINT8) SaPlatformPolicyPpi->OcConfig->GtMaxOcTurboRatio; + + /// + /// VoltageTarget has 2 uses and we need to update the target based + /// on the voltagemode requested + /// + RequestedVfItem.VfSettings.VoltageTargetMode = SaPlatformPolicyPpi->OcConfig->GtVoltageMode; + if (RequestedVfItem.VfSettings.VoltageTargetMode == OC_LIB_OFFSET_ADAPTIVE){ + RequestedVfItem.VfSettings.VoltageTarget = SaPlatformPolicyPpi->OcConfig->GtExtraTurboVoltage; + } + else { + RequestedVfItem.VfSettings.VoltageTarget = SaPlatformPolicyPpi->OcConfig->GtVoltageOverride; + } + RequestedVfItem.VfSettings.VoltageOffset = SaPlatformPolicyPpi->OcConfig->GtVoltageOffset; + + VfUpdateNeeded = (BOOLEAN)CompareMem((VOID*)&RequestedVfItem,(VOID*)&CurrentVfItem,sizeof(VOLTAGE_FREQUENCY_ITEM)); + } + else if ((DomainId == OC_LIB_DOMAIN_ID_UNCORE) || (DomainId == OC_LIB_DOMAIN_ID_IOA) || (DomainId == OC_LIB_DOMAIN_ID_IOD)){ + /// + /// Uncore,IOA, and IOD domains only supports voltage offset, other settings are ignored + /// + switch (DomainId) { + case OC_LIB_DOMAIN_ID_UNCORE: + RequestedVfItem.VfSettings.VoltageOffset = SaPlatformPolicyPpi->OcConfig->SaVoltageOffset; + break; + + case OC_LIB_DOMAIN_ID_IOA: + RequestedVfItem.VfSettings.VoltageOffset = SaPlatformPolicyPpi->OcConfig->IoaVoltageOffset; + break; + + case OC_LIB_DOMAIN_ID_IOD: + RequestedVfItem.VfSettings.VoltageOffset = SaPlatformPolicyPpi->OcConfig->IodVoltageOffset; + break; + } + + if (RequestedVfItem.VfSettings.VoltageOffset != CurrentVfItem.VfSettings.VoltageOffset) + VfUpdateNeeded = TRUE; + } + + if (VfUpdateNeeded){ + VfUpdateNeeded = FALSE; + + /// + /// Arm watchdog timer for OC changes + /// + Status = gWdtPei->ReloadAndStart (WDT_TIMEOUT_BETWEEN_PEI_DXE); + + /// + /// Need to update the requested voltage/frequency values + /// + Status = SetVoltageFrequencyItem(RequestedVfItem,&LibStatus); + if ((Status != EFI_SUCCESS) || (LibStatus != OC_LIB_COMPLETION_CODE_SUCCESS)){ + DEBUG ((EFI_D_ERROR, "(OC) Set Voltage Frequency failed. EFI Status = %X, Library Status = %X\n", Status, LibStatus)); + } + } + } + else { + DEBUG ((EFI_D_INFO, "(OC) No OC support for this Domain = %X\n", DomainId)); + } + } + else { + DEBUG ((EFI_D_ERROR, "(OC) GetOcCapabilities message failed. Library Status = %X, Domain = %X\n", LibStatus, DomainId)); + } + } + } + + return Status; +} |