Vlv2TbltDevicePkg/PpmPolicy/PpmPolicy.c

   1 /**
   2   Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
   3   SPDX-License-Identifier: BSD-2-Clause-Patent
   4
   5
   6 Module Name:
   7
   8
   9   PpmPolicy.c
  10
  11 Abstract:
  12
  13   This file is a wrapper for Intel PPM Platform Policy driver.
  14   Get Setup Value to initilize Intel PPM DXE Platform Policy.
  15
  16 --*/
  17 #include "PpmPolicy.h"
  18 #include <Protocol/MpService.h>
  19 #include <Library/BaseLib.h>
  20 #include <Library/DebugLib.h>
  21 #include <Library/CpuIA32.h>
  22
  23 #include <PchRegs.h>
  24 #include <Library/PchPlatformLib.h>
  25
  26 #define EFI_CPUID_FAMILY                      0x0F00
  27 #define EFI_CPUID_MODEL                       0x00F0
  28 #define EFI_CPUID_STEPPING                    0x000F
  29
  30 EFI_STATUS
  31 EFIAPI
  32 PpmPolicyEntry(
  33   IN EFI_HANDLE ImageHandle,
  34   IN EFI_SYSTEM_TABLE *SystemTable
  35 )
  36 {
  37   EFI_BOOT_SERVICES        *pBS;
  38   EFI_MP_SERVICES_PROTOCOL *MpService;
  39   EFI_CPUID_REGISTER        Cpuid01 = { 0, 0, 0, 0};
  40   EFI_HANDLE                Handle;
  41   EFI_STATUS                Status;
  42   UINTN                     CpuCount;
  43   UINT8                     CPUMobileFeature;
  44
  45   PCH_STEPPING              Stepping;
  46
  47   pBS = SystemTable->BootServices;
  48
  49   //
  50   // Set PPM policy structure to known value
  51   //
  52   pBS->SetMem (&mDxePlatformPpmPolicy, sizeof(PPM_PLATFORM_POLICY_PROTOCOL), 0);
  53
  54   //
  55   // Find the MpService Protocol
  56   //
  57   Status = pBS->LocateProtocol (&gEfiMpServiceProtocolGuid,
  58                                 NULL,
  59                                 (void **)&MpService
  60                                );
  61   ASSERT_EFI_ERROR (Status);
  62
  63   //
  64   // Get processor count from MP service.
  65   //
  66   Status = MpService->GetNumberOfProcessors (MpService, &CpuCount, NULL);
  67   ASSERT_EFI_ERROR (Status);
  68
  69   //
  70   // Store the CPUID for use by SETUP items.
  71   //
  72   AsmCpuid (EFI_CPUID_VERSION_INFO, &Cpuid01.RegEax, &Cpuid01.RegEbx, &Cpuid01.RegEcx, &Cpuid01.RegEdx);
  73
  74   mDxePlatformPpmPolicy.Revision                       = PPM_PLATFORM_POLICY_PROTOCOL_REVISION_4;
  75
  76   //Read CPU Mobile feature from PLATFORM_ID_MSR MSR(0x17) NOTFB_I_AM_NOT_MOBILE_FUSE_CLIAMC00H Bit 28
  77   //Bit Description: { Disables Mobile features 0 = I am NOT a mobile part 1 = I am a mobile part (default)"}
  78   CPUMobileFeature = ((RShiftU64 (AsmReadMsr64(EFI_MSR_IA32_PLATFORM_ID), 28)) & 0x1);
  79
  80   if (!EFI_ERROR(Status)) {
  81     if (CPUMobileFeature == 1){//CPU mobile feature
  82       mDxePlatformPpmPolicy.FunctionEnables.EnableGv       = ICH_DEVICE_ENABLE;
  83       mDxePlatformPpmPolicy.FunctionEnables.EnableCx       = ICH_DEVICE_ENABLE;
  84       mDxePlatformPpmPolicy.FunctionEnables.EnableCxe      = ICH_DEVICE_DISABLE;
  85       mDxePlatformPpmPolicy.FunctionEnables.EnableTm       = ICH_DEVICE_ENABLE;
  86       //MaxC7
  87       mDxePlatformPpmPolicy.FunctionEnables.EnableC7       = ICH_DEVICE_ENABLE;
  88       mDxePlatformPpmPolicy.FunctionEnables.EnableC6       = ICH_DEVICE_ENABLE;
  89       mDxePlatformPpmPolicy.FunctionEnables.EnableC4       = ICH_DEVICE_ENABLE;
  90
  91
  92     }else{//CPU desktop feature
  93        mDxePlatformPpmPolicy.FunctionEnables.EnableGv       = ICH_DEVICE_DISABLE;
  94        mDxePlatformPpmPolicy.FunctionEnables.EnableCx       = ICH_DEVICE_DISABLE;
  95        mDxePlatformPpmPolicy.FunctionEnables.EnableCxe      = ICH_DEVICE_DISABLE;
  96        mDxePlatformPpmPolicy.FunctionEnables.EnableTm       = ICH_DEVICE_DISABLE;
  97        mDxePlatformPpmPolicy.FunctionEnables.EnableC4       = ICH_DEVICE_DISABLE;
  98        mDxePlatformPpmPolicy.FunctionEnables.EnableC6       = ICH_DEVICE_DISABLE;
  99        mDxePlatformPpmPolicy.FunctionEnables.EnableC7       = ICH_DEVICE_DISABLE;
 100     }
 101
 102
 103     mDxePlatformPpmPolicy.FunctionEnables.EnableProcHot  = ICH_DEVICE_ENABLE;
 104     mDxePlatformPpmPolicy.FunctionEnables.TStatesEnable  = ICH_DEVICE_ENABLE;
 105
 106
 107     Stepping = PchStepping();
 108     if (Stepping < PchB3) {
 109       // If SoC is B0~B2 Stepping, disable the Turbo
 110       mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_DISABLE;
 111     } else {
 112       mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_ENABLE;
 113     }
 114
 115     mDxePlatformPpmPolicy.FunctionEnables.EnableTm      = ICH_DEVICE_ENABLE;
 116
 117     mDxePlatformPpmPolicy.FunctionEnables.EnableCMP      = ICH_DEVICE_ENABLE;
 118
 119   } else {
 120     mDxePlatformPpmPolicy.FunctionEnables.EnableGv       = ICH_DEVICE_ENABLE;
 121     mDxePlatformPpmPolicy.FunctionEnables.EnableCx       = ICH_DEVICE_ENABLE;
 122     mDxePlatformPpmPolicy.FunctionEnables.EnableCxe      = ICH_DEVICE_ENABLE;
 123     mDxePlatformPpmPolicy.FunctionEnables.EnableTm      = ICH_DEVICE_ENABLE;
 124     mDxePlatformPpmPolicy.FunctionEnables.EnableProcHot  = ICH_DEVICE_ENABLE;
 125     mDxePlatformPpmPolicy.FunctionEnables.EnableCMP       = ICH_DEVICE_DISABLE;
 126     mDxePlatformPpmPolicy.FunctionEnables.TStatesEnable  = ICH_DEVICE_ENABLE;
 127     mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_ENABLE;
 128     mDxePlatformPpmPolicy.FunctionEnables.EnableC4       = ICH_DEVICE_ENABLE;
 129     mDxePlatformPpmPolicy.FunctionEnables.EnableC6       = ICH_DEVICE_ENABLE;
 130   }
 131
 132
 133
 134   mDxePlatformPpmPolicy.S3RestoreMsrSwSmiNumber                       = S3_RESTORE_MSR_SW_SMI;
 135
 136   Handle = NULL;
 137   Status = pBS->InstallMultipleProtocolInterfaces (
 138                                                   &Handle,
 139                                                   &gPpmPlatformPolicyProtocolGuid,
 140                                                   &mDxePlatformPpmPolicy,
 141                                                   NULL
 142                                                   );
 143
 144   ASSERT_EFI_ERROR (Status);
 145
 146   return EFI_SUCCESS;
 147 }