/** @file

  Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
                                                                                   

  SPDX-License-Identifier: BSD-2-Clause-Patent

                                                                                   


Module Name:


  PchPlatformPolicy.c

Abstract:


--*/

#include "PlatformDxe.h"
#include <Protocol/PchPlatformPolicy.h>
#include <Protocol/VlvPlatformPolicy.h>
#include <Library/PchPlatformLib.h>

#include "AzaliaVerbTable.h"
#include "Protocol/GlobalNvsArea.h"
#include "Protocol/DxePchPolicyUpdateProtocol.h"

#define MOBILE_PLATFORM 1
#define DESKTOP_PLATFORM 2

EFI_GUID                        gDxePchPolicyUpdateProtocolGuid = DXE_PCH_POLICY_UPDATE_PROTOCOL_GUID;
DXE_PCH_POLICY_UPDATE_PROTOCOL  mDxePchPolicyUpdate = { 0 };

/**

  Updates the feature policies according to the setup variable.

  @retval VOID

**/
VOID
InitPchPlatformPolicy (
  IN EFI_PLATFORM_INFO_HOB      *PlatformInfo
  )
{
  DXE_PCH_PLATFORM_POLICY_PROTOCOL *DxePlatformPchPolicy;
  EFI_STATUS                       Status;
  EFI_GLOBAL_NVS_AREA_PROTOCOL     *GlobalNvsArea;
  UINT8                            PortIndex;
  EFI_HANDLE                       Handle;
  PCH_STEPPING                     SocStepping = PchA0;
  BOOLEAN                          ModifyVariable;

  ModifyVariable = FALSE;
  DEBUG ((EFI_D_INFO, "InitPchPlatformPolicy() - Start\n"));

  Status  = gBS->LocateProtocol (&gDxePchPlatformPolicyProtocolGuid, NULL, (VOID **) &DxePlatformPchPolicy);
  ASSERT_EFI_ERROR (Status);

  //
  //  Locate the Global NVS Protocol.
  //
  Status = gBS->LocateProtocol (
                  &gEfiGlobalNvsAreaProtocolGuid,
                  NULL,
                  (VOID **) &GlobalNvsArea
                  );
  ASSERT_EFI_ERROR (Status);

  //
  // Update system information
  //
  DxePlatformPchPolicy->Revision  = DXE_PCH_PLATFORM_POLICY_PROTOCOL_REVISION_12;

  //
  // General initialization
  //
  DxePlatformPchPolicy->BusNumber = 0;

  //
  // VLV BIOS Spec Section 3.6 Flash Security Recommendation,
  // Intel strongly recommends that BIOS sets the BIOS Interface Lock Down bit. Enabling this bit
  // will mitigate malicious software attempts to replace the system BIOS option ROM with its own code.
  // We always enable this as a platform policy.
  //
  DxePlatformPchPolicy->LockDownConfig->BiosInterface = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->LockDownConfig->BiosLock = mSystemConfiguration.SpiRwProtect;

  //
  // DeviceEnables
  //
  DxePlatformPchPolicy->DeviceEnabling->Lan = mSystemConfiguration.Lan;
  DxePlatformPchPolicy->DeviceEnabling->Azalia        = mSystemConfiguration.PchAzalia;
  DxePlatformPchPolicy->DeviceEnabling->Sata          = mSystemConfiguration.Sata;
  DxePlatformPchPolicy->DeviceEnabling->Smbus         = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->DeviceEnabling->LpeEnabled    = mSystemConfiguration.Lpe;

  DxePlatformPchPolicy->UsbConfig->Ehci1Usbr          = PCH_DEVICE_DISABLE;

  DxePlatformPchPolicy->UsbConfig->UsbXhciLpmSupport =mSystemConfiguration.UsbXhciLpmSupport;

  //
  // Disable FFRD PR0 USB port2 for power saving since PR0 uses non-POR WWAN (but enable on PR0.3/PR0.5/PR1)
  //
  if ((PlatformInfo->BoardId == BOARD_ID_BL_FFRD) && (PlatformInfo->BoardRev == PR0))
    if (mSystemConfiguration.PchUsbPort[2] !=0) {
      mSystemConfiguration.PchUsbPort[2]=0;
      ModifyVariable = TRUE;
    }


  if (ModifyVariable) {
    Status = gRT->SetVariable (
                    NORMAL_SETUP_NAME,
                    &gEfiNormalSetupGuid,
                    EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
                    sizeof(SYSTEM_CONFIGURATION),
                    &mSystemConfiguration
                    );
  }

  SocStepping = PchStepping();
  if (mSystemConfiguration.UsbAutoMode == 1) {   // auto mode is enabled
    if (PchA0 == SocStepping) {
    	//
      //  For A0, EHCI is enabled as default.
      //
      mSystemConfiguration.PchUsb20       = 1;
      mSystemConfiguration.PchUsb30Mode   = 0;
      mSystemConfiguration.UsbXhciSupport = 0;
      DEBUG ((EFI_D_INFO, "EHCI is enabled as default. SOC 0x%x\n", SocStepping));
    } else {
    	//
      //  For A1 and later, XHCI is enabled as default.
      //
      mSystemConfiguration.PchUsb20       = 0;
      mSystemConfiguration.PchUsb30Mode   = 1;
      mSystemConfiguration.UsbXhciSupport = 1;
      DEBUG ((EFI_D_INFO, "XHCI is enabled as default. SOC 0x%x\n", SocStepping));
    }
    //
    //overwrite the setting
    //
    Status = gRT->SetVariable(
                    NORMAL_SETUP_NAME,
                    &gEfiNormalSetupGuid,
                    EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,
                    sizeof(SYSTEM_CONFIGURATION),
                    &mSystemConfiguration
                    );
  }

  //
  // USB Device 29 configuration
  //
  DxePlatformPchPolicy->UsbConfig->Usb20Settings[0].Enable = mSystemConfiguration.PchUsb20;
  DxePlatformPchPolicy->UsbConfig->UsbPerPortCtl           = mSystemConfiguration.PchUsbPerPortCtl;
  if (mSystemConfiguration.PchUsbPerPortCtl != PCH_DEVICE_DISABLE) {
    for (PortIndex = 0; PortIndex < PCH_USB_MAX_PHYSICAL_PORTS; PortIndex++) {
      DxePlatformPchPolicy->UsbConfig->PortSettings[PortIndex].Enable = mSystemConfiguration.PchUsbPort[PortIndex];
    }
  }

  DxePlatformPchPolicy->UsbConfig->EhciDebug               = mSystemConfiguration.PchEhciDebug;

  //
  // xHCI (USB 3.0) related settings from setup variable
  //
  DxePlatformPchPolicy->UsbConfig->Usb30Settings.XhciStreams    = mSystemConfiguration.PchUsb30Streams;

  DxePlatformPchPolicy->UsbConfig->Usb30Settings.Mode           = mSystemConfiguration.PchUsb30Mode;

  //
  // Remove XHCI Pre-Boot Driver setup option selection from end-user view and automate loading of USB 3.0 BIOS driver based on XhciMode selection
  //
  switch (mSystemConfiguration.PchUsb30Mode) {
    case 0: // Disabled
      DxePlatformPchPolicy->UsbConfig->Usb30Settings.PreBootSupport = 0;
      break;
    case 1: // Enabled
      DxePlatformPchPolicy->UsbConfig->Usb30Settings.PreBootSupport = 1;
      break;
    case 2: // Auto
      DxePlatformPchPolicy->UsbConfig->Usb30Settings.PreBootSupport = 0;
      break;
    case 3: // Smart Auto
      DxePlatformPchPolicy->UsbConfig->Usb30Settings.PreBootSupport = 1;
      break;
    default:
      DxePlatformPchPolicy->UsbConfig->Usb30Settings.PreBootSupport = mSystemConfiguration.UsbXhciSupport;
      break;
  }



  DxePlatformPchPolicy->UsbConfig->UsbOtgSettings.Enable  = mSystemConfiguration.PchUsbOtg;

  DxePlatformPchPolicy->UsbConfig->PortSettings[0].Dock   = PCH_DEVICE_DISABLE;
  DxePlatformPchPolicy->UsbConfig->PortSettings[1].Dock   = PCH_DEVICE_DISABLE;
  DxePlatformPchPolicy->UsbConfig->PortSettings[2].Dock   = PCH_DEVICE_DISABLE;
  DxePlatformPchPolicy->UsbConfig->PortSettings[3].Dock   = PCH_DEVICE_DISABLE;

  DxePlatformPchPolicy->UsbConfig->PortSettings[0].Panel  = PCH_USB_FRONT_PANEL;
  DxePlatformPchPolicy->UsbConfig->PortSettings[1].Panel  = PCH_USB_FRONT_PANEL;
  DxePlatformPchPolicy->UsbConfig->PortSettings[2].Panel  = PCH_USB_BACK_PANEL;
  DxePlatformPchPolicy->UsbConfig->PortSettings[3].Panel  = PCH_USB_BACK_PANEL;

  //
  //
  // Enable USB Topology control and program the topology setting for every USB port
  // See Platform Design Guide for description of topologies
  //
  //
  // Port 0: ~5.3", Port 1: ~4.9", Port 2: ~4.7", Port 3: ~8.0"
  //
  DxePlatformPchPolicy->UsbConfig->Usb20PortLength[0]  = 0x53;
  DxePlatformPchPolicy->UsbConfig->Usb20PortLength[1]  = 0x49;
  DxePlatformPchPolicy->UsbConfig->Usb20PortLength[2]  = 0x47;
  DxePlatformPchPolicy->UsbConfig->Usb20PortLength[3]  = 0x80;

  DxePlatformPchPolicy->UsbConfig->Usb20OverCurrentPins[0]  = PchUsbOverCurrentPin0;
  DxePlatformPchPolicy->UsbConfig->Usb20OverCurrentPins[1]  = PchUsbOverCurrentPin0;
  DxePlatformPchPolicy->UsbConfig->Usb20OverCurrentPins[2]  = PchUsbOverCurrentPin1;
  DxePlatformPchPolicy->UsbConfig->Usb20OverCurrentPins[3]  = PchUsbOverCurrentPin1;

  DxePlatformPchPolicy->UsbConfig->Usb30OverCurrentPins[0]  = PchUsbOverCurrentPinSkip;//PchUsbOverCurrentPin0;

  DxePlatformPchPolicy->EhciPllCfgEnable = mSystemConfiguration.EhciPllCfgEnable;
  DEBUG ((EFI_D_INFO, "InitPchPlatformPolicy() DxePlatformPchPolicy->EhciPllCfgEnable = 0x%x \n",DxePlatformPchPolicy->EhciPllCfgEnable));
    DxePlatformPchPolicy->PciExpressConfig->PcieDynamicGating                                 = mSystemConfiguration.PcieDynamicGating;
  for (PortIndex = 0; PortIndex < PCH_PCIE_MAX_ROOT_PORTS; PortIndex++) {
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].Enable                        = mSystemConfiguration.IchPciExp[PortIndex];
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].SlotImplemented               = PCH_DEVICE_ENABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].FunctionNumber                = PortIndex;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].PhysicalSlotNumber            = PortIndex;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].Aspm                          = 4;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].PmSci                         = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].ExtSync                       = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].HotPlug                       = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].AdvancedErrorReporting        = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].UnsupportedRequestReport      = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].FatalErrorReport              = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].NoFatalErrorReport            = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].CorrectableErrorReport        = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].PmeInterrupt                  = 0;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].SystemErrorOnFatalError       = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].SystemErrorOnNonFatalError    = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].SystemErrorOnCorrectableError = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->PciExpressConfig->RootPort[PortIndex].CompletionTimeout             = PchPciECompletionTO_Default;
  }

  //
  // SATA configuration
  //
  for (PortIndex = 0; PortIndex < PCH_AHCI_MAX_PORTS; PortIndex++) {
    if (mSystemConfiguration.SataType == 0) {
      DxePlatformPchPolicy->SataConfig->PortSettings[PortIndex].Enable   = PCH_DEVICE_ENABLE;
      DxePlatformPchPolicy->SataConfig->LegacyMode                       = PCH_DEVICE_ENABLE;
    } else {
      DxePlatformPchPolicy->SataConfig->PortSettings[PortIndex].Enable   = PCH_DEVICE_ENABLE;
      DxePlatformPchPolicy->SataConfig->LegacyMode                       = PCH_DEVICE_DISABLE;
    }
    if(mSystemConfiguration.Sata == 1){
      DxePlatformPchPolicy->SataConfig->PortSettings[PortIndex].Enable   = PCH_DEVICE_ENABLE;
    } else {
      DxePlatformPchPolicy->SataConfig->PortSettings[PortIndex].Enable   = PCH_DEVICE_DISABLE;
    }
    if(0 == PortIndex){
      DxePlatformPchPolicy->SataConfig->PortSettings[PortIndex].HotPlug    = PCH_DEVICE_DISABLE;
    } else if(1 == PortIndex){
      DxePlatformPchPolicy->SataConfig->PortSettings[PortIndex].HotPlug    = PCH_DEVICE_DISABLE;
    }

    DxePlatformPchPolicy->SataConfig->PortSettings[PortIndex].SpinUp     = PCH_DEVICE_DISABLE;
    DxePlatformPchPolicy->SataConfig->PortSettings[PortIndex].MechSw     = PCH_DEVICE_DISABLE;
  }
  DxePlatformPchPolicy->SataConfig->RaidAlternateId                 = PCH_DEVICE_DISABLE;
  DxePlatformPchPolicy->SataConfig->Raid0                           = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->Raid1                           = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->Raid10                          = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->Raid5                           = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->Irrt                            = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->OromUiBanner                    = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->HddUnlock                       = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->LedLocate                       = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->IrrtOnly                        = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->SalpSupport                     = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->SataConfig->TestMode                        = mSystemConfiguration.SataTestMode;

  //
  // AzaliaConfig
  //
  DxePlatformPchPolicy->AzaliaConfig->Pme       = mSystemConfiguration.AzaliaPme;
  DxePlatformPchPolicy->AzaliaConfig->HdmiCodec = mSystemConfiguration.HdmiCodec;
  DxePlatformPchPolicy->AzaliaConfig->DS        = mSystemConfiguration.AzaliaDs;
  DxePlatformPchPolicy->AzaliaConfig->AzaliaVCi = mSystemConfiguration.AzaliaVCiEnable;

  //
  // Set LPSS configuration according to setup value.
  //
  DxePlatformPchPolicy->LpssConfig->LpssPciModeEnabled   = mSystemConfiguration.LpssPciModeEnabled;

  DxePlatformPchPolicy->LpssConfig->Dma1Enabled    = mSystemConfiguration.LpssDma1Enabled;
  DxePlatformPchPolicy->LpssConfig->I2C0Enabled    = mSystemConfiguration.LpssI2C0Enabled;
  DxePlatformPchPolicy->LpssConfig->I2C1Enabled    = mSystemConfiguration.LpssI2C1Enabled;
  DxePlatformPchPolicy->LpssConfig->I2C2Enabled    = mSystemConfiguration.LpssI2C2Enabled;
  DxePlatformPchPolicy->LpssConfig->I2C3Enabled    = mSystemConfiguration.LpssI2C3Enabled;
  DxePlatformPchPolicy->LpssConfig->I2C4Enabled    = mSystemConfiguration.LpssI2C4Enabled;
  DxePlatformPchPolicy->LpssConfig->I2C5Enabled    = mSystemConfiguration.LpssI2C5Enabled;
  DxePlatformPchPolicy->LpssConfig->I2C6Enabled    = mSystemConfiguration.LpssI2C6Enabled;

  DxePlatformPchPolicy->LpssConfig->Dma0Enabled    = mSystemConfiguration.LpssDma0Enabled;;
  DxePlatformPchPolicy->LpssConfig->Pwm0Enabled    = mSystemConfiguration.LpssPwm0Enabled;
  DxePlatformPchPolicy->LpssConfig->Pwm1Enabled    = mSystemConfiguration.LpssPwm1Enabled;
  DxePlatformPchPolicy->LpssConfig->Hsuart0Enabled = mSystemConfiguration.LpssHsuart0Enabled;
  DxePlatformPchPolicy->LpssConfig->Hsuart1Enabled = mSystemConfiguration.LpssHsuart1Enabled;
  DxePlatformPchPolicy->LpssConfig->SpiEnabled     = mSystemConfiguration.LpssSpiEnabled;

  //
  // Set SCC configuration according to setup value.
  //
  DxePlatformPchPolicy->SccConfig->SdioEnabled   = mSystemConfiguration.LpssSdioEnabled;
  DxePlatformPchPolicy->SccConfig->SdcardEnabled = TRUE;
  DxePlatformPchPolicy->SccConfig->SdCardSDR25Enabled = mSystemConfiguration.LpssSdCardSDR25Enabled;
  DxePlatformPchPolicy->SccConfig->SdCardDDR50Enabled = mSystemConfiguration.LpssSdCardDDR50Enabled;
  DxePlatformPchPolicy->SccConfig->HsiEnabled    = mSystemConfiguration.LpssMipiHsi;

  if (mSystemConfiguration.eMMCBootMode== 1) {// Auto detection mode
  //
  // Silicon Stepping
  //
  switch (PchStepping()) {
    case PchA0: // A0 and A1
    case PchA1:
      DEBUG ((EFI_D_ERROR, "Auto Detect: SOC A0/A1: SCC eMMC 4.41 Configuration\n"));
      DxePlatformPchPolicy->SccConfig->eMMCEnabled            = 1;
      DxePlatformPchPolicy->SccConfig->eMMC45Enabled          = 0;
      DxePlatformPchPolicy->SccConfig->eMMC45DDR50Enabled     = 0;
      DxePlatformPchPolicy->SccConfig->eMMC45HS200Enabled     = 0;
      DxePlatformPchPolicy->SccConfig->eMMC45RetuneTimerValue = 0;
      break;
    case PchB0: // B0 and later
    default:
      DEBUG ((EFI_D_ERROR, "Auto Detect: SOC B0 and later: SCC eMMC 4.5 Configuration\n"));
      DxePlatformPchPolicy->SccConfig->eMMCEnabled            = 0;
      DxePlatformPchPolicy->SccConfig->eMMC45Enabled          = mSystemConfiguration.LpsseMMC45Enabled;
      DxePlatformPchPolicy->SccConfig->eMMC45DDR50Enabled     = mSystemConfiguration.LpsseMMC45DDR50Enabled;
      DxePlatformPchPolicy->SccConfig->eMMC45HS200Enabled     = mSystemConfiguration.LpsseMMC45HS200Enabled;
      DxePlatformPchPolicy->SccConfig->eMMC45RetuneTimerValue = mSystemConfiguration.LpsseMMC45RetuneTimerValue;
      break;
  }
 } else if (mSystemConfiguration.eMMCBootMode == 2) { // eMMC 4.41
    DEBUG ((EFI_D_ERROR, "Force to SCC eMMC 4.41 Configuration\n"));
    DxePlatformPchPolicy->SccConfig->eMMCEnabled            = 1;
    DxePlatformPchPolicy->SccConfig->eMMC45Enabled          = 0;
    DxePlatformPchPolicy->SccConfig->eMMC45DDR50Enabled     = 0;
    DxePlatformPchPolicy->SccConfig->eMMC45HS200Enabled     = 0;
    DxePlatformPchPolicy->SccConfig->eMMC45RetuneTimerValue = 0;

 } else if (mSystemConfiguration.eMMCBootMode == 3) { // eMMC 4.5
      DEBUG ((EFI_D_ERROR, "Force to eMMC 4.5 Configuration\n"));
      DxePlatformPchPolicy->SccConfig->eMMCEnabled            = 0;
      DxePlatformPchPolicy->SccConfig->eMMC45Enabled          = mSystemConfiguration.LpsseMMC45Enabled;
      DxePlatformPchPolicy->SccConfig->eMMC45DDR50Enabled     = mSystemConfiguration.LpsseMMC45DDR50Enabled;
      DxePlatformPchPolicy->SccConfig->eMMC45HS200Enabled     = mSystemConfiguration.LpsseMMC45HS200Enabled;
      DxePlatformPchPolicy->SccConfig->eMMC45RetuneTimerValue = mSystemConfiguration.LpsseMMC45RetuneTimerValue;

 } else { // Disable eMMC controllers
      DEBUG ((EFI_D_ERROR, "Disable eMMC controllers\n"));
      DxePlatformPchPolicy->SccConfig->eMMCEnabled            = 0;
      DxePlatformPchPolicy->SccConfig->eMMC45Enabled          = 0;
      DxePlatformPchPolicy->SccConfig->eMMC45DDR50Enabled     = 0;
      DxePlatformPchPolicy->SccConfig->eMMC45HS200Enabled     = 0;
      DxePlatformPchPolicy->SccConfig->eMMC45RetuneTimerValue = 0;
 }

  //
  // Reserved SMBus Address
  //
  DxePlatformPchPolicy->SmbusConfig->NumRsvdSmbusAddresses  = 4;
  DxePlatformPchPolicy->SmbusConfig->RsvdSmbusAddressTable  = mSmbusRsvdAddresses;

  //
  // MiscPm Configuration
  //
  DxePlatformPchPolicy->MiscPmConfig->WakeConfig.WolEnableOverride        = mSystemConfiguration.WakeOnLanS5;
  DxePlatformPchPolicy->MiscPmConfig->SlpLanLowDc                         = mSystemConfiguration.SlpLanLowDc;
  DxePlatformPchPolicy->MiscPmConfig->PowerResetStatusClear.MeWakeSts     = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->MiscPmConfig->PowerResetStatusClear.MeHrstColdSts = PCH_DEVICE_ENABLE;
  DxePlatformPchPolicy->MiscPmConfig->PowerResetStatusClear.MeHrstWarmSts = PCH_DEVICE_ENABLE;

  //
  // Enable / disable serial IRQ according to setup value.
  //
  DxePlatformPchPolicy->SerialIrqConfig->SirqEnable = PCH_DEVICE_ENABLE;

  //
  // Set Serial IRQ Mode Select according to setup value.
  //
  DxePlatformPchPolicy->SerialIrqConfig->SirqMode = PchQuietMode;

  //
  // Program the default Sub System Vendor Device Id
  //
  DxePlatformPchPolicy->DefaultSvidSid->SubSystemVendorId = V_PCH_INTEL_VENDOR_ID;
  DxePlatformPchPolicy->DefaultSvidSid->SubSystemId       = V_PCH_DEFAULT_SID;

  mAzaliaVerbTable[9].VerbTableData = mAzaliaVerbTableData12;

  DxePlatformPchPolicy->AzaliaConfig->AzaliaVerbTableNum  = sizeof (mAzaliaVerbTable) / sizeof (PCH_AZALIA_VERB_TABLE);
  DxePlatformPchPolicy->AzaliaConfig->AzaliaVerbTable     = mAzaliaVerbTable;
  DxePlatformPchPolicy->AzaliaConfig->ResetWaitTimer      = 300;

  DxePlatformPchPolicy->IdleReserve = mSystemConfiguration.IdleReserve;
  DxePlatformPchPolicy->AcpiHWRed = PCH_DEVICE_DISABLE;

  //
  // Install DxePchPolicyUpdateProtocol
  //
  Handle                        = NULL;

  mDxePchPolicyUpdate.Revision  = DXE_PCH_POLICY_UPDATE_PROTOCOL_REVISION_1;

  Status = gBS->InstallMultipleProtocolInterfaces (
                  &Handle,
                  &gDxePchPolicyUpdateProtocolGuid,
                  &mDxePchPolicyUpdate,
                  NULL
                  );
  ASSERT_EFI_ERROR (Status);

  DEBUG ((EFI_D_INFO, "InitPchPlatformPolicy() - End\n"));
}


DXE_VLV_PLATFORM_POLICY_PROTOCOL mDxePlatformVlvPolicy;

VOID
InitVlvPlatformPolicy (
  )
{
  DXE_VLV_PLATFORM_POLICY_PROTOCOL *DxePlatformVlvPolicy;
  EFI_STATUS                      Status;
  EFI_HANDLE                      Handle;

  ZeroMem (&mDxePlatformVlvPolicy, sizeof(DXE_VLV_PLATFORM_POLICY_PROTOCOL));

  DxePlatformVlvPolicy = &mDxePlatformVlvPolicy;


  DxePlatformVlvPolicy->GraphicReserve00 = mSystemConfiguration.GraphicReserve00;
  DxePlatformVlvPolicy->PavpMode = mSystemConfiguration.PavpMode;
  DxePlatformVlvPolicy->GraphicReserve01 = 1;
  DxePlatformVlvPolicy->GraphicReserve02 = mSystemConfiguration.GraphicReserve02;
  DxePlatformVlvPolicy->GraphicReserve03 = 1;
  DxePlatformVlvPolicy->GraphicReserve04 = 0;
  DxePlatformVlvPolicy->GraphicReserve05 = mSystemConfiguration.GraphicReserve05;
  DxePlatformVlvPolicy->IgdPanelFeatures.PFITStatus = mSystemConfiguration.PanelScaling;
  
  DxePlatformVlvPolicy->IgdPanelFeatures.LidStatus = 1;
  DxePlatformVlvPolicy->IdleReserve = mSystemConfiguration.IdleReserve;

  DxePlatformVlvPolicy->GraphicReserve06 = 1;

  if ( (mSystemConfiguration.Lpe == 1) || mSystemConfiguration.Lpe == 2) {
    DxePlatformVlvPolicy ->AudioTypeSupport = LPE_AUDIO ;
  } else if ( mSystemConfiguration.PchAzalia == 1 ) {
    DxePlatformVlvPolicy ->AudioTypeSupport = HD_AUDIO;
  } else {
    DxePlatformVlvPolicy ->AudioTypeSupport = NO_AUDIO;
  }

  Handle = NULL;
  Status = gBS->InstallProtocolInterface (
                  &Handle,
                  &gDxeVlvPlatformPolicyGuid,
                  EFI_NATIVE_INTERFACE,
                  DxePlatformVlvPolicy
                  );
  ASSERT_EFI_ERROR(Status);

}