/** Copyright (c) 2009 - 2019, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent Module Name: PpmPolicy.c Abstract: This file is a wrapper for Intel PPM Platform Policy driver. Get Setup Value to initilize Intel PPM DXE Platform Policy. --*/ #include "PpmPolicy.h" #include #include #include #include #include #include #include EFI_STATUS EFIAPI PpmPolicyEntry( IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable ) { EFI_BOOT_SERVICES *pBS; EFI_MP_SERVICES_PROTOCOL *MpService; EFI_HANDLE Handle; EFI_STATUS Status; UINTN CpuCount; UINTN CpuEnabledCount; UINT8 CPUMobileFeature; PCH_STEPPING Stepping; pBS = SystemTable->BootServices; // // Set PPM policy structure to known value // pBS->SetMem (&mDxePlatformPpmPolicy, sizeof(PPM_PLATFORM_POLICY_PROTOCOL), 0); // // Find the MpService Protocol // Status = pBS->LocateProtocol (&gEfiMpServiceProtocolGuid, NULL, (void **)&MpService ); ASSERT_EFI_ERROR (Status); // // Get processor count from MP service. // Status = MpService->GetNumberOfProcessors (MpService, &CpuCount, &CpuEnabledCount); ASSERT_EFI_ERROR (Status); // // Store the CPUID for use by SETUP items. // AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, NULL); mDxePlatformPpmPolicy.Revision = PPM_PLATFORM_POLICY_PROTOCOL_REVISION_4; //Read CPU Mobile feature from PLATFORM_ID_MSR MSR(0x17) NOTFB_I_AM_NOT_MOBILE_FUSE_CLIAMC00H Bit 28 //Bit Description: { Disables Mobile features 0 = I am NOT a mobile part 1 = I am a mobile part (default)"} CPUMobileFeature = ((RShiftU64 (AsmReadMsr64(MSR_IA32_PLATFORM_ID), 28)) & 0x1); if (!EFI_ERROR(Status)) { if (CPUMobileFeature == 1){//CPU mobile feature mDxePlatformPpmPolicy.FunctionEnables.EnableGv = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableCx = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableCxe = ICH_DEVICE_DISABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableTm = ICH_DEVICE_ENABLE; //MaxC7 mDxePlatformPpmPolicy.FunctionEnables.EnableC7 = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableC6 = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableC4 = ICH_DEVICE_ENABLE; }else{//CPU desktop feature mDxePlatformPpmPolicy.FunctionEnables.EnableGv = ICH_DEVICE_DISABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableCx = ICH_DEVICE_DISABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableCxe = ICH_DEVICE_DISABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableTm = ICH_DEVICE_DISABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableC4 = ICH_DEVICE_DISABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableC6 = ICH_DEVICE_DISABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableC7 = ICH_DEVICE_DISABLE; } mDxePlatformPpmPolicy.FunctionEnables.EnableProcHot = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.TStatesEnable = ICH_DEVICE_ENABLE; Stepping = PchStepping(); if (Stepping < PchB3) { // If SoC is B0~B2 Stepping, disable the Turbo mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_DISABLE; } else { mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_ENABLE; } mDxePlatformPpmPolicy.FunctionEnables.EnableTm = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableCMP = ICH_DEVICE_ENABLE; } else { mDxePlatformPpmPolicy.FunctionEnables.EnableGv = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableCx = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableCxe = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableTm = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableProcHot = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableCMP = ICH_DEVICE_DISABLE; mDxePlatformPpmPolicy.FunctionEnables.TStatesEnable = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableC4 = ICH_DEVICE_ENABLE; mDxePlatformPpmPolicy.FunctionEnables.EnableC6 = ICH_DEVICE_ENABLE; } mDxePlatformPpmPolicy.S3RestoreMsrSwSmiNumber = S3_RESTORE_MSR_SW_SMI; Handle = NULL; Status = pBS->InstallMultipleProtocolInterfaces ( &Handle, &gPpmPlatformPolicyProtocolGuid, &mDxePlatformPpmPolicy, NULL ); ASSERT_EFI_ERROR (Status); return EFI_SUCCESS; }