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