Vlv2TbltDevicePkg/PpmPolicy/PpmPolicy.c

   1 /**
   2   Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>
   3   This program and the accompanying materials
   4   are licensed and made available under the terms and conditions of the BSD License
   5   which accompanies this distribution.  The full text of the license may be found at
   6   http://opensource.org/licenses/bsd-license.php
   7
   8   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   9   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  10
  11
  12 Module Name:
  13
  14
  15   PpmPolicy.c
  16
  17 Abstract:
  18
  19   This file is a wrapper for Intel PPM Platform Policy driver.
  20   Get Setup Value to initilize Intel PPM DXE Platform Policy.
  21
  22 --*/
  23 #include "PpmPolicy.h"
  24 #include <Protocol/MpService.h>
  25 #include <Library/BaseLib.h>
  26 #include <Library/DebugLib.h>
  27 #include <Library/CpuIA32.h>
  28
  29 #include <PchRegs.h>
  30 #include <Library/PchPlatformLib.h>
  31
  32 #define EFI_CPUID_FAMILY                      0x0F00
  33 #define EFI_CPUID_MODEL                       0x00F0
  34 #define EFI_CPUID_STEPPING                    0x000F
  35
  36
  37
  38 EFI_STATUS
  39 EFIAPI
  40 PpmPolicyEntry(
  41   IN EFI_HANDLE ImageHandle,
  42   IN EFI_SYSTEM_TABLE *SystemTable
  43 )
  44 {
  45   EFI_MP_SERVICES_PROTOCOL *MpService;
  46   EFI_CPUID_REGISTER        Cpuid01 = { 0, 0, 0, 0};
  47   EFI_HANDLE                Handle;
  48   EFI_STATUS                Status;
  49   UINTN                     CpuCount;
  50   UINT64                    MaxRatio;
  51   UINT8                     CPUMobileFeature;
  52
  53   PCH_STEPPING              Stepping;
  54
  55
  56   gBS = SystemTable->BootServices;
  57   pBS = SystemTable->BootServices;
  58   pRS = SystemTable->RuntimeServices;
  59
  60   //
  61   // Set PPM policy structure to known value
  62   //
  63   gBS->SetMem (&mDxePlatformPpmPolicy, sizeof(PPM_PLATFORM_POLICY_PROTOCOL), 0);
  64
  65   //
  66   // Find the MpService Protocol
  67   //
  68   Status = pBS->LocateProtocol (&gEfiMpServiceProtocolGuid,
  69                                 NULL,
  70                                 (void **)&MpService
  71                                );
  72   ASSERT_EFI_ERROR (Status);
  73
  74   //
  75   // Get processor count from MP service.
  76   //
  77   Status = MpService->GetNumberOfProcessors (MpService, &CpuCount, NULL);
  78   ASSERT_EFI_ERROR (Status);
  79
  80   //
  81   // Store the CPUID for use by SETUP items.
  82   //
  83   AsmCpuid (EFI_CPUID_VERSION_INFO, &Cpuid01.RegEax, &Cpuid01.RegEbx, &Cpuid01.RegEcx, &Cpuid01.RegEdx);
  84   MaxRatio = ((RShiftU64 (AsmReadMsr64(EFI_MSR_IA32_PLATFORM_ID), 8)) & 0x1F);
  85
  86
  87   mDxePlatformPpmPolicy.Revision                       = PPM_PLATFORM_POLICY_PROTOCOL_REVISION_4;
  88
  89   //Read CPU Mobile feature from PLATFORM_ID_MSR MSR(0x17) NOTFB_I_AM_NOT_MOBILE_FUSE_CLIAMC00H Bit 28
  90   //Bit Description: { Disables Mobile features 0 = I am NOT a mobile part 1 = I am a mobile part (default)"}
  91   CPUMobileFeature = ((RShiftU64 (AsmReadMsr64(EFI_MSR_IA32_PLATFORM_ID), 28)) & 0x1);
  92
  93   if (!EFI_ERROR(Status)) {
  94     if (CPUMobileFeature == 1){//CPU mobile feature
  95       mDxePlatformPpmPolicy.FunctionEnables.EnableGv       = ICH_DEVICE_ENABLE;
  96       mDxePlatformPpmPolicy.FunctionEnables.EnableCx       = ICH_DEVICE_ENABLE;
  97       mDxePlatformPpmPolicy.FunctionEnables.EnableCxe      = ICH_DEVICE_DISABLE;
  98       mDxePlatformPpmPolicy.FunctionEnables.EnableTm       = ICH_DEVICE_ENABLE;
  99       //MaxC7
 100       mDxePlatformPpmPolicy.FunctionEnables.EnableC7       = ICH_DEVICE_ENABLE;
 101       mDxePlatformPpmPolicy.FunctionEnables.EnableC6       = ICH_DEVICE_ENABLE;
 102       mDxePlatformPpmPolicy.FunctionEnables.EnableC4       = ICH_DEVICE_ENABLE;
 103
 104
 105     }else{//CPU desktop feature
 106        mDxePlatformPpmPolicy.FunctionEnables.EnableGv       = ICH_DEVICE_DISABLE;
 107        mDxePlatformPpmPolicy.FunctionEnables.EnableCx       = ICH_DEVICE_DISABLE;
 108        mDxePlatformPpmPolicy.FunctionEnables.EnableCxe      = ICH_DEVICE_DISABLE;
 109        mDxePlatformPpmPolicy.FunctionEnables.EnableTm       = ICH_DEVICE_DISABLE;
 110        mDxePlatformPpmPolicy.FunctionEnables.EnableC4       = ICH_DEVICE_DISABLE;
 111        mDxePlatformPpmPolicy.FunctionEnables.EnableC6       = ICH_DEVICE_DISABLE;
 112        mDxePlatformPpmPolicy.FunctionEnables.EnableC7       = ICH_DEVICE_DISABLE;
 113     }
 114
 115
 116     mDxePlatformPpmPolicy.FunctionEnables.EnableProcHot  = ICH_DEVICE_ENABLE;
 117     mDxePlatformPpmPolicy.FunctionEnables.TStatesEnable  = ICH_DEVICE_ENABLE;
 118
 119
 120     Stepping = PchStepping();
 121     if (Stepping < PchB3) {
 122       // If SoC is B0~B2 Stepping, disable the Turbo
 123       mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_DISABLE;
 124     } else {
 125       mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_ENABLE;
 126     }
 127
 128     mDxePlatformPpmPolicy.FunctionEnables.EnableTm      = ICH_DEVICE_ENABLE;
 129
 130     mDxePlatformPpmPolicy.FunctionEnables.EnableCMP      = ICH_DEVICE_ENABLE;
 131
 132   } else {
 133     mDxePlatformPpmPolicy.FunctionEnables.EnableGv       = ICH_DEVICE_ENABLE;
 134     mDxePlatformPpmPolicy.FunctionEnables.EnableCx       = ICH_DEVICE_ENABLE;
 135     mDxePlatformPpmPolicy.FunctionEnables.EnableCxe      = ICH_DEVICE_ENABLE;
 136     mDxePlatformPpmPolicy.FunctionEnables.EnableTm      = ICH_DEVICE_ENABLE;
 137     mDxePlatformPpmPolicy.FunctionEnables.EnableProcHot  = ICH_DEVICE_ENABLE;
 138     mDxePlatformPpmPolicy.FunctionEnables.EnableCMP       = ICH_DEVICE_DISABLE;
 139     mDxePlatformPpmPolicy.FunctionEnables.TStatesEnable  = ICH_DEVICE_ENABLE;
 140     mDxePlatformPpmPolicy.FunctionEnables.EnableTurboMode= ICH_DEVICE_ENABLE;
 141     mDxePlatformPpmPolicy.FunctionEnables.EnableC4       = ICH_DEVICE_ENABLE;
 142     mDxePlatformPpmPolicy.FunctionEnables.EnableC6       = ICH_DEVICE_ENABLE;
 143   }
 144
 145
 146
 147   mDxePlatformPpmPolicy.S3RestoreMsrSwSmiNumber                       = S3_RESTORE_MSR_SW_SMI;
 148
 149   Handle = NULL;
 150   Status = gBS->InstallMultipleProtocolInterfaces (
 151                                                   &Handle,
 152                                                   &gPpmPlatformPolicyProtocolGuid,
 153                                                   &mDxePlatformPpmPolicy,
 154                                                   NULL
 155                                                   );
 156
 157   ASSERT_EFI_ERROR (Status);
 158
 159   return EFI_SUCCESS;
 160 }