/** @file
  This will be invoked only once. It will call FspMemoryInit API,
  register TemporaryRamDonePpi to call TempRamExit API, and register MemoryDiscoveredPpi
  notify to call FspSiliconInit API.

  Copyright (c) 2014 - 2021, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include <PiPei.h>

#include <Library/PeimEntryPoint.h>
#include <Library/PeiServicesLib.h>
#include <Library/PeiServicesTablePointerLib.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/HobLib.h>
#include <Library/PcdLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/FspWrapperPlatformLib.h>
#include <Library/FspWrapperHobProcessLib.h>
#include <Library/FspWrapperMultiPhaseProcessLib.h>
#include <Library/TimerLib.h>
#include <Library/PerformanceLib.h>
#include <Library/FspWrapperApiLib.h>
#include <Library/FspMeasurementLib.h>

#include <Ppi/FspSiliconInitDone.h>
#include <Ppi/EndOfPeiPhase.h>
#include <Ppi/MemoryDiscovered.h>
#include <Ppi/TemporaryRamDone.h>
#include <Ppi/SecPlatformInformation.h>
#include <Ppi/Tcg.h>
#include <Ppi/FirmwareVolumeInfoMeasurementExcluded.h>
#include <Library/FspWrapperApiTestLib.h>
#include <FspEas.h>
#include <FspStatusCode.h>
#include <FspGlobalData.h>

extern EFI_PEI_NOTIFY_DESCRIPTOR  mS3EndOfPeiNotifyDesc;
extern EFI_GUID                   gFspHobGuid;

/**
  This function handles S3 resume task at the end of PEI.

  @param[in] PeiServices    Pointer to PEI Services Table.
  @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
                            caused this function to execute.
  @param[in] Ppi            Pointer to the PPI data associated with this function.

  @retval EFI_STATUS        Always return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
S3EndOfPeiNotify (
  IN EFI_PEI_SERVICES           **PeiServices,
  IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
  IN VOID                       *Ppi
  );

EFI_PEI_NOTIFY_DESCRIPTOR  mS3EndOfPeiNotifyDesc = {
  (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  &gEfiEndOfPeiSignalPpiGuid,
  S3EndOfPeiNotify
};

/**
  This function handles S3 resume task at the end of PEI.

  @param[in] PeiServices    Pointer to PEI Services Table.
  @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
                            caused this function to execute.
  @param[in] Ppi            Pointer to the PPI data associated with this function.

  @retval EFI_STATUS        Always return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
S3EndOfPeiNotify (
  IN EFI_PEI_SERVICES           **PeiServices,
  IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
  IN VOID                       *Ppi
  )
{
  NOTIFY_PHASE_PARAMS  NotifyPhaseParams;
  EFI_STATUS           Status;

  DEBUG ((DEBUG_INFO, "S3EndOfPeiNotify enter\n"));

  NotifyPhaseParams.Phase = EnumInitPhaseAfterPciEnumeration;
  Status                  = CallFspNotifyPhase (&NotifyPhaseParams);
  DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase AfterPciEnumeration status: 0x%x\n", Status));

  //
  // Reset the system if FSP API returned FSP_STATUS_RESET_REQUIRED status
  //
  if ((Status >= FSP_STATUS_RESET_REQUIRED_COLD) && (Status <= FSP_STATUS_RESET_REQUIRED_8)) {
    DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase AfterPciEnumeration requested reset 0x%x\n", Status));
    CallFspWrapperResetSystem (Status);
  }

  NotifyPhaseParams.Phase = EnumInitPhaseReadyToBoot;
  Status                  = CallFspNotifyPhase (&NotifyPhaseParams);
  DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase ReadyToBoot status: 0x%x\n", Status));

  //
  // Reset the system if FSP API returned FSP_STATUS_RESET_REQUIRED status
  //
  if ((Status >= FSP_STATUS_RESET_REQUIRED_COLD) && (Status <= FSP_STATUS_RESET_REQUIRED_8)) {
    DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase ReadyToBoot requested reset 0x%x\n", Status));
    CallFspWrapperResetSystem (Status);
  }

  NotifyPhaseParams.Phase = EnumInitPhaseEndOfFirmware;
  Status                  = CallFspNotifyPhase (&NotifyPhaseParams);
  DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase EndOfFirmware status: 0x%x\n", Status));

  //
  // Reset the system if FSP API returned FSP_STATUS_RESET_REQUIRED status
  //
  if ((Status >= FSP_STATUS_RESET_REQUIRED_COLD) && (Status <= FSP_STATUS_RESET_REQUIRED_8)) {
    DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase EndOfFirmware requested reset 0x%x\n", Status));
    CallFspWrapperResetSystem (Status);
  }

  return EFI_SUCCESS;
}

/**
  Return Hob list produced by FSP.

  @param[in]  PeiServices  The pointer to the PEI Services Table.
  @param[in]  This         The pointer to this instance of this PPI.
  @param[out] FspHobList   The pointer to Hob list produced by FSP.

  @return EFI_SUCCESS      Return Hob list produced by FSP successfully.
**/
EFI_STATUS
EFIAPI
FspSiliconInitDoneGetFspHobList (
  IN  CONST EFI_PEI_SERVICES     **PeiServices,
  IN  FSP_SILICON_INIT_DONE_PPI  *This,
  OUT VOID                       **FspHobList
  );

FSP_SILICON_INIT_DONE_PPI  mFspSiliconInitDonePpi = {
  FspSiliconInitDoneGetFspHobList
};

EFI_PEI_PPI_DESCRIPTOR  mPeiFspSiliconInitDonePpi = {
  EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
  &gFspSiliconInitDonePpiGuid,
  &mFspSiliconInitDonePpi
};

/**
  Return Hob list produced by FSP.

  @param[in]  PeiServices  The pointer to the PEI Services Table.
  @param[in]  This         The pointer to this instance of this PPI.
  @param[out] FspHobList   The pointer to Hob list produced by FSP.

  @return EFI_SUCCESS      Return Hob list produced by FSP successfully.
**/
EFI_STATUS
EFIAPI
FspSiliconInitDoneGetFspHobList (
  IN  CONST EFI_PEI_SERVICES     **PeiServices,
  IN  FSP_SILICON_INIT_DONE_PPI  *This,
  OUT VOID                       **FspHobList
  )
{
  EFI_HOB_GUID_TYPE  *GuidHob;

  GuidHob = GetFirstGuidHob (&gFspHobGuid);
  if (GuidHob != NULL) {
    *FspHobList = *(VOID **)GET_GUID_HOB_DATA (GuidHob);
    return EFI_SUCCESS;
  } else {
    return EFI_NOT_FOUND;
  }
}

/**
  Get the FSP S UPD Data address

  @return FSP-S UPD Data Address
**/
UINTN
GetFspsUpdDataAddress (
  VOID
  )
{
  if (PcdGet64 (PcdFspsUpdDataAddress64) != 0) {
    return (UINTN)PcdGet64 (PcdFspsUpdDataAddress64);
  } else {
    return (UINTN)PcdGet32 (PcdFspsUpdDataAddress);
  }
}

/**
  This function is for FSP dispatch mode to perform post FSP-S process.

  @param[in] PeiServices    Pointer to PEI Services Table.
  @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
                            caused this function to execute.
  @param[in] Ppi            Pointer to the PPI data associated with this function.

  @retval EFI_STATUS        Status returned by PeiServicesInstallPpi ()
**/
EFI_STATUS
EFIAPI
FspsWrapperEndOfPeiNotify (
  IN EFI_PEI_SERVICES           **PeiServices,
  IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
  IN VOID                       *Ppi
  )
{
  EFI_STATUS  Status;

  //
  // This step may include platform specific process in some boot loaders so
  // aligning the same behavior between API and Dispatch modes.
  // Note: In Dispatch mode no FspHobList so passing NULL to function and
  //       expecting function will handle it.
  //
  PostFspsHobProcess (NULL);

  //
  // Install FspSiliconInitDonePpi so that any other driver can consume this info.
  //
  Status = PeiServicesInstallPpi (&mPeiFspSiliconInitDonePpi);
  ASSERT_EFI_ERROR (Status);

  return Status;
}

EFI_PEI_NOTIFY_DESCRIPTOR  mFspsWrapperEndOfPeiNotifyDesc = {
  (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  &gEfiEndOfPeiSignalPpiGuid,
  FspsWrapperEndOfPeiNotify
};

/**
  This function is called after PEI core discover memory and finish migration.

  @param[in] PeiServices    Pointer to PEI Services Table.
  @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
                            caused this function to execute.
  @param[in] Ppi            Pointer to the PPI data associated with this function.

  @retval EFI_STATUS        Always return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
PeiMemoryDiscoveredNotify (
  IN EFI_PEI_SERVICES           **PeiServices,
  IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
  IN VOID                       *Ppi
  );

EFI_PEI_NOTIFY_DESCRIPTOR  mPeiMemoryDiscoveredNotifyDesc = {
  (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  &gEfiPeiMemoryDiscoveredPpiGuid,
  PeiMemoryDiscoveredNotify
};

/**
  This function is called after PEI core discover memory and finish migration.

  @param[in] PeiServices    Pointer to PEI Services Table.
  @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
                            caused this function to execute.
  @param[in] Ppi            Pointer to the PPI data associated with this function.

  @retval EFI_STATUS        Always return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
PeiMemoryDiscoveredNotify (
  IN EFI_PEI_SERVICES           **PeiServices,
  IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
  IN VOID                       *Ppi
  )
{
  FSP_INFO_HEADER    *FspsHeaderPtr;
  UINT64             TimeStampCounterStart;
  EFI_STATUS         Status;
  VOID               *FspHobListPtr;
  EFI_HOB_GUID_TYPE  *GuidHob;
  FSPS_UPD_COMMON    *FspsUpdDataPtr;
  UINTN              *SourceData;

  DEBUG ((DEBUG_INFO, "PeiMemoryDiscoveredNotify enter\n"));
  FspsUpdDataPtr = NULL;

  FspsHeaderPtr = (FSP_INFO_HEADER *)FspFindFspHeader (PcdGet32 (PcdFspsBaseAddress));
  DEBUG ((DEBUG_INFO, "FspsHeaderPtr - 0x%x\n", FspsHeaderPtr));
  if (FspsHeaderPtr == NULL) {
    return EFI_DEVICE_ERROR;
  }

  if ((GetFspsUpdDataAddress () == 0) && (FspsHeaderPtr->CfgRegionSize != 0) && (FspsHeaderPtr->CfgRegionOffset != 0)) {
    //
    // Copy default FSP-S UPD data from Flash
    //
    FspsUpdDataPtr = (FSPS_UPD_COMMON *)AllocateZeroPool ((UINTN)FspsHeaderPtr->CfgRegionSize);
    ASSERT (FspsUpdDataPtr != NULL);
    SourceData = (UINTN *)((UINTN)FspsHeaderPtr->ImageBase + (UINTN)FspsHeaderPtr->CfgRegionOffset);
    CopyMem (FspsUpdDataPtr, SourceData, (UINTN)FspsHeaderPtr->CfgRegionSize);
  } else {
    FspsUpdDataPtr = (FSPS_UPD_COMMON *)GetFspsUpdDataAddress ();
    ASSERT (FspsUpdDataPtr != NULL);
  }

  UpdateFspsUpdData ((VOID *)FspsUpdDataPtr);

  TimeStampCounterStart = AsmReadTsc ();
  PERF_START_EX (&gFspApiPerformanceGuid, "EventRec", NULL, 0, FSP_STATUS_CODE_SILICON_INIT | FSP_STATUS_CODE_COMMON_CODE | FSP_STATUS_CODE_API_ENTRY);
  Status = CallFspSiliconInit ((VOID *)FspsUpdDataPtr);

  //
  // Reset the system if FSP API returned FSP_STATUS_RESET_REQUIRED status
  //
  if ((Status >= FSP_STATUS_RESET_REQUIRED_COLD) && (Status <= FSP_STATUS_RESET_REQUIRED_8)) {
    DEBUG ((DEBUG_INFO, "FspSiliconInitApi requested reset %r\n", Status));
    CallFspWrapperResetSystem (Status);
  }

  if ((Status != FSP_STATUS_VARIABLE_REQUEST) && EFI_ERROR (Status)) {
    DEBUG ((DEBUG_ERROR, "ERROR - Failed to execute FspSiliconInitApi(), Status = %r\n", Status));
    ASSERT_EFI_ERROR (Status);
  }

  DEBUG ((DEBUG_INFO, "FspSiliconInit status: %r\n", Status));

  //
  // Get FspHobList
  //
  GuidHob = GetFirstGuidHob (&gFspHobGuid);
  ASSERT (GuidHob != NULL);
  FspHobListPtr = *(VOID **)GET_GUID_HOB_DATA (GuidHob);
  DEBUG ((DEBUG_INFO, "FspHobListPtr - 0x%x\n", FspHobListPtr));

  if (Status == FSP_STATUS_VARIABLE_REQUEST) {
    //
    // call to Variable request handler
    //
    FspWrapperVariableRequestHandler (&FspHobListPtr, FspMultiPhaseSiInitApiIndex);
  }

  //
  // See if MultiPhase process is required or not
  //
  FspWrapperMultiPhaseHandler (&FspHobListPtr, FspMultiPhaseSiInitApiIndex);    // FspS MultiPhase

  PERF_END_EX (&gFspApiPerformanceGuid, "EventRec", NULL, 0, FSP_STATUS_CODE_SILICON_INIT | FSP_STATUS_CODE_COMMON_CODE | FSP_STATUS_CODE_API_EXIT);
  DEBUG ((DEBUG_INFO, "Total time spent executing FspSiliconInitApi: %d millisecond\n", DivU64x32 (GetTimeInNanoSecond (AsmReadTsc () - TimeStampCounterStart), 1000000)));

  Status = TestFspSiliconInitApiOutput ((VOID *)NULL);
  if (RETURN_ERROR (Status)) {
    DEBUG ((DEBUG_ERROR, "ERROR - TestFspSiliconInitApiOutput () fail, Status = %r\n", Status));
  }

  PostFspsHobProcess (FspHobListPtr);

  //
  // Install FspSiliconInitDonePpi so that any other driver can consume this info.
  //
  Status = PeiServicesInstallPpi (&mPeiFspSiliconInitDonePpi);
  ASSERT_EFI_ERROR (Status);

  return Status;
}

/**
  Do FSP initialization in API mode.

  @retval EFI_STATUS        Always return EFI_SUCCESS
**/
EFI_STATUS
FspsWrapperInitApiMode (
  VOID
  )
{
  EFI_STATUS     Status;
  EFI_BOOT_MODE  BootMode;

  //
  // Register MemoryDiscovered Notify to run FspSiliconInit
  //
  Status = PeiServicesNotifyPpi (&mPeiMemoryDiscoveredNotifyDesc);
  ASSERT_EFI_ERROR (Status);

  //
  // Register EndOfPei Notify for S3 to run FSP NotifyPhase
  //
  PeiServicesGetBootMode (&BootMode);
  if (BootMode == BOOT_ON_S3_RESUME) {
    Status = PeiServicesNotifyPpi (&mS3EndOfPeiNotifyDesc);
    ASSERT_EFI_ERROR (Status);
  }

  return EFI_SUCCESS;
}

/**
  Do FSP initialization in Dispatch mode.

  @retval FSP initialization status.
**/
EFI_STATUS
FspsWrapperInitDispatchMode (
  VOID
  )
{
  EFI_STATUS                                             Status;
  EFI_PEI_FIRMWARE_VOLUME_INFO_MEASUREMENT_EXCLUDED_PPI  *MeasurementExcludedFvPpi;
  EFI_PEI_PPI_DESCRIPTOR                                 *MeasurementExcludedPpiList;

  MeasurementExcludedFvPpi = AllocatePool (sizeof (*MeasurementExcludedFvPpi));
  ASSERT (MeasurementExcludedFvPpi != NULL);
  MeasurementExcludedFvPpi->Count          = 1;
  MeasurementExcludedFvPpi->Fv[0].FvBase   = PcdGet32 (PcdFspsBaseAddress);
  MeasurementExcludedFvPpi->Fv[0].FvLength = ((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdFspsBaseAddress))->FvLength;

  MeasurementExcludedPpiList = AllocatePool (sizeof (*MeasurementExcludedPpiList));
  ASSERT (MeasurementExcludedPpiList != NULL);
  MeasurementExcludedPpiList->Flags = EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST;
  MeasurementExcludedPpiList->Guid  = &gEfiPeiFirmwareVolumeInfoMeasurementExcludedPpiGuid;
  MeasurementExcludedPpiList->Ppi   = MeasurementExcludedFvPpi;

  Status = PeiServicesInstallPpi (MeasurementExcludedPpiList);
  ASSERT_EFI_ERROR (Status);

  //
  // FSP-S Wrapper running in Dispatch mode and reports FSP-S FV to PEI dispatcher.
  //
  PeiServicesInstallFvInfoPpi (
    &((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdFspsBaseAddress))->FileSystemGuid,
    (VOID *)(UINTN)PcdGet32 (PcdFspsBaseAddress),
    (UINT32)((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdFspsBaseAddress))->FvLength,
    NULL,
    NULL
    );
  //
  // Register EndOfPei Nofity to run post FSP-S process.
  //
  Status = PeiServicesNotifyPpi (&mFspsWrapperEndOfPeiNotifyDesc);
  ASSERT_EFI_ERROR (Status);
  return Status;
}

/**
  This function is called after TCG installed PPI.

  @param[in] PeiServices    Pointer to PEI Services Table.
  @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
                            caused this function to execute.
  @param[in] Ppi            Pointer to the PPI data associated with this function.

  @retval EFI_STATUS        Always return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
TcgPpiNotify (
  IN EFI_PEI_SERVICES           **PeiServices,
  IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
  IN VOID                       *Ppi
  );

EFI_PEI_NOTIFY_DESCRIPTOR  mTcgPpiNotifyDesc = {
  (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  &gEdkiiTcgPpiGuid,
  TcgPpiNotify
};

/**
  This function is called after TCG installed PPI.

  @param[in] PeiServices    Pointer to PEI Services Table.
  @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
                            caused this function to execute.
  @param[in] Ppi            Pointer to the PPI data associated with this function.

  @retval EFI_STATUS        Always return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
TcgPpiNotify (
  IN EFI_PEI_SERVICES           **PeiServices,
  IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
  IN VOID                       *Ppi
  )
{
  UINT32  FspMeasureMask;

  DEBUG ((DEBUG_INFO, "TcgPpiNotify FSPS\n"));

  FspMeasureMask = PcdGet32 (PcdFspMeasurementConfig);

  if ((FspMeasureMask & FSP_MEASURE_FSPS) != 0) {
    MeasureFspFirmwareBlob (
      0,
      "FSPS",
      PcdGet32 (PcdFspsBaseAddress),
      (UINT32)((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdFspsBaseAddress))->FvLength
      );
  }

  return EFI_SUCCESS;
}

/**
  This is the entrypoint of PEIM.

  @param[in] FileHandle  Handle of the file being invoked.
  @param[in] PeiServices Describes the list of possible PEI Services.

  @retval EFI_SUCCESS if it completed successfully.
**/
EFI_STATUS
EFIAPI
FspsWrapperPeimEntryPoint (
  IN       EFI_PEI_FILE_HANDLE  FileHandle,
  IN CONST EFI_PEI_SERVICES     **PeiServices
  )
{
  EFI_STATUS  Status;

  DEBUG ((DEBUG_INFO, "FspsWrapperPeimEntryPoint\n"));

  Status = PeiServicesNotifyPpi (&mTcgPpiNotifyDesc);
  ASSERT_EFI_ERROR (Status);

  if (PcdGet8 (PcdFspModeSelection) == 1) {
    FspsWrapperInitApiMode ();
  } else {
    FspsWrapperInitDispatchMode ();
  }

  return EFI_SUCCESS;
}