IntelFsp2WrapperPkg/FspsWrapperPeim/FspsWrapperPeim.c

   1 /** @file
   2   This will be invoked only once. It will call FspMemoryInit API,
   3   register TemporaryRamDonePpi to call TempRamExit API, and register MemoryDiscoveredPpi
   4   notify to call FspSiliconInit API.
   5
   6   Copyright (c) 2014 - 2021, Intel Corporation. All rights reserved.<BR>
   7   SPDX-License-Identifier: BSD-2-Clause-Patent
   8
   9 **/
  10
  11 #include <PiPei.h>
  12
  13 #include <Library/PeimEntryPoint.h>
  14 #include <Library/PeiServicesLib.h>
  15 #include <Library/PeiServicesTablePointerLib.h>
  16 #include <Library/BaseLib.h>
  17 #include <Library/DebugLib.h>
  18 #include <Library/BaseMemoryLib.h>
  19 #include <Library/HobLib.h>
  20 #include <Library/PcdLib.h>
  21 #include <Library/MemoryAllocationLib.h>
  22 #include <Library/FspWrapperPlatformLib.h>
  23 #include <Library/FspWrapperHobProcessLib.h>
  24 #include <Library/TimerLib.h>
  25 #include <Library/PerformanceLib.h>
  26 #include <Library/FspWrapperApiLib.h>
  27 #include <Library/FspMeasurementLib.h>
  28
  29 #include <Ppi/FspSiliconInitDone.h>
  30 #include <Ppi/EndOfPeiPhase.h>
  31 #include <Ppi/MemoryDiscovered.h>
  32 #include <Ppi/TemporaryRamDone.h>
  33 #include <Ppi/SecPlatformInformation.h>
  34 #include <Ppi/Tcg.h>
  35 #include <Ppi/FirmwareVolumeInfoMeasurementExcluded.h>
  36 #include <Library/FspWrapperApiTestLib.h>
  37 #include <FspEas.h>
  38 #include <FspStatusCode.h>
  39
  40 extern EFI_PEI_NOTIFY_DESCRIPTOR  mS3EndOfPeiNotifyDesc;
  41 extern EFI_GUID                   gFspHobGuid;
  42
  43 /**
  44   This function handles S3 resume task at the end of PEI.
  45
  46   @param[in] PeiServices    Pointer to PEI Services Table.
  47   @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
  48                             caused this function to execute.
  49   @param[in] Ppi            Pointer to the PPI data associated with this function.
  50
  51   @retval EFI_STATUS        Always return EFI_SUCCESS
  52 **/
  53 EFI_STATUS
  54 EFIAPI
  55 S3EndOfPeiNotify (
  56   IN EFI_PEI_SERVICES           **PeiServices,
  57   IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
  58   IN VOID                       *Ppi
  59   );
  60
  61 EFI_PEI_NOTIFY_DESCRIPTOR  mS3EndOfPeiNotifyDesc = {
  62   (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
  63   &gEfiEndOfPeiSignalPpiGuid,
  64   S3EndOfPeiNotify
  65 };
  66
  67 /**
  68   This function handles S3 resume task at the end of PEI.
  69
  70   @param[in] PeiServices    Pointer to PEI Services Table.
  71   @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
  72                             caused this function to execute.
  73   @param[in] Ppi            Pointer to the PPI data associated with this function.
  74
  75   @retval EFI_STATUS        Always return EFI_SUCCESS
  76 **/
  77 EFI_STATUS
  78 EFIAPI
  79 S3EndOfPeiNotify (
  80   IN EFI_PEI_SERVICES           **PeiServices,
  81   IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
  82   IN VOID                       *Ppi
  83   )
  84 {
  85   NOTIFY_PHASE_PARAMS  NotifyPhaseParams;
  86   EFI_STATUS           Status;
  87
  88   DEBUG ((DEBUG_INFO, "S3EndOfPeiNotify enter\n"));
  89
  90   NotifyPhaseParams.Phase = EnumInitPhaseAfterPciEnumeration;
  91   Status                  = CallFspNotifyPhase (&NotifyPhaseParams);
  92   DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase AfterPciEnumeration status: 0x%x\n", Status));
  93
  94   //
  95   // Reset the system if FSP API returned FSP_STATUS_RESET_REQUIRED status
  96   //
  97   if ((Status >= FSP_STATUS_RESET_REQUIRED_COLD) && (Status <= FSP_STATUS_RESET_REQUIRED_8)) {
  98     DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase AfterPciEnumeration requested reset 0x%x\n", Status));
  99     CallFspWrapperResetSystem (Status);
 100   }
 101
 102   NotifyPhaseParams.Phase = EnumInitPhaseReadyToBoot;
 103   Status                  = CallFspNotifyPhase (&NotifyPhaseParams);
 104   DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase ReadyToBoot status: 0x%x\n", Status));
 105
 106   //
 107   // Reset the system if FSP API returned FSP_STATUS_RESET_REQUIRED status
 108   //
 109   if ((Status >= FSP_STATUS_RESET_REQUIRED_COLD) && (Status <= FSP_STATUS_RESET_REQUIRED_8)) {
 110     DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase ReadyToBoot requested reset 0x%x\n", Status));
 111     CallFspWrapperResetSystem (Status);
 112   }
 113
 114   NotifyPhaseParams.Phase = EnumInitPhaseEndOfFirmware;
 115   Status                  = CallFspNotifyPhase (&NotifyPhaseParams);
 116   DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase EndOfFirmware status: 0x%x\n", Status));
 117
 118   //
 119   // Reset the system if FSP API returned FSP_STATUS_RESET_REQUIRED status
 120   //
 121   if ((Status >= FSP_STATUS_RESET_REQUIRED_COLD) && (Status <= FSP_STATUS_RESET_REQUIRED_8)) {
 122     DEBUG ((DEBUG_INFO, "FSP S3NotifyPhase EndOfFirmware requested reset 0x%x\n", Status));
 123     CallFspWrapperResetSystem (Status);
 124   }
 125
 126   return EFI_SUCCESS;
 127 }
 128
 129 /**
 130   Return Hob list produced by FSP.
 131
 132   @param[in]  PeiServices  The pointer to the PEI Services Table.
 133   @param[in]  This         The pointer to this instance of this PPI.
 134   @param[out] FspHobList   The pointer to Hob list produced by FSP.
 135
 136   @return EFI_SUCCESS      Return Hob list produced by FSP successfully.
 137 **/
 138 EFI_STATUS
 139 EFIAPI
 140 FspSiliconInitDoneGetFspHobList (
 141   IN  CONST EFI_PEI_SERVICES     **PeiServices,
 142   IN  FSP_SILICON_INIT_DONE_PPI  *This,
 143   OUT VOID                       **FspHobList
 144   );
 145
 146 FSP_SILICON_INIT_DONE_PPI  mFspSiliconInitDonePpi = {
 147   FspSiliconInitDoneGetFspHobList
 148 };
 149
 150 EFI_PEI_PPI_DESCRIPTOR  mPeiFspSiliconInitDonePpi = {
 151   EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST,
 152   &gFspSiliconInitDonePpiGuid,
 153   &mFspSiliconInitDonePpi
 154 };
 155
 156 /**
 157   Return Hob list produced by FSP.
 158
 159   @param[in]  PeiServices  The pointer to the PEI Services Table.
 160   @param[in]  This         The pointer to this instance of this PPI.
 161   @param[out] FspHobList   The pointer to Hob list produced by FSP.
 162
 163   @return EFI_SUCCESS      Return Hob list produced by FSP successfully.
 164 **/
 165 EFI_STATUS
 166 EFIAPI
 167 FspSiliconInitDoneGetFspHobList (
 168   IN  CONST EFI_PEI_SERVICES     **PeiServices,
 169   IN  FSP_SILICON_INIT_DONE_PPI  *This,
 170   OUT VOID                       **FspHobList
 171   )
 172 {
 173   EFI_HOB_GUID_TYPE  *GuidHob;
 174
 175   GuidHob = GetFirstGuidHob (&gFspHobGuid);
 176   if (GuidHob != NULL) {
 177     *FspHobList = *(VOID **)GET_GUID_HOB_DATA (GuidHob);
 178     return EFI_SUCCESS;
 179   } else {
 180     return EFI_NOT_FOUND;
 181   }
 182 }
 183
 184 /**
 185   Get the FSP S UPD Data address
 186
 187   @return FSP-S UPD Data Address
 188 **/
 189 UINTN
 190 GetFspsUpdDataAddress (
 191   VOID
 192   )
 193 {
 194   if (PcdGet64 (PcdFspsUpdDataAddress64) != 0) {
 195     return (UINTN)PcdGet64 (PcdFspsUpdDataAddress64);
 196   } else {
 197     return (UINTN)PcdGet32 (PcdFspsUpdDataAddress);
 198   }
 199 }
 200
 201 /**
 202   This function is for FSP dispatch mode to perform post FSP-S process.
 203
 204   @param[in] PeiServices    Pointer to PEI Services Table.
 205   @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
 206                             caused this function to execute.
 207   @param[in] Ppi            Pointer to the PPI data associated with this function.
 208
 209   @retval EFI_STATUS        Status returned by PeiServicesInstallPpi ()
 210 **/
 211 EFI_STATUS
 212 EFIAPI
 213 FspsWrapperEndOfPeiNotify (
 214   IN EFI_PEI_SERVICES           **PeiServices,
 215   IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
 216   IN VOID                       *Ppi
 217   )
 218 {
 219   EFI_STATUS  Status;
 220
 221   //
 222   // This step may include platform specific process in some boot loaders so
 223   // aligning the same behavior between API and Dispatch modes.
 224   // Note: In Dispatch mode no FspHobList so passing NULL to function and
 225   //       expecting function will handle it.
 226   //
 227   PostFspsHobProcess (NULL);
 228
 229   //
 230   // Install FspSiliconInitDonePpi so that any other driver can consume this info.
 231   //
 232   Status = PeiServicesInstallPpi (&mPeiFspSiliconInitDonePpi);
 233   ASSERT_EFI_ERROR (Status);
 234
 235   return Status;
 236 }
 237
 238 EFI_PEI_NOTIFY_DESCRIPTOR  mFspsWrapperEndOfPeiNotifyDesc = {
 239   (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
 240   &gEfiEndOfPeiSignalPpiGuid,
 241   FspsWrapperEndOfPeiNotify
 242 };
 243
 244 /**
 245   This function is called after PEI core discover memory and finish migration.
 246
 247   @param[in] PeiServices    Pointer to PEI Services Table.
 248   @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
 249                             caused this function to execute.
 250   @param[in] Ppi            Pointer to the PPI data associated with this function.
 251
 252   @retval EFI_STATUS        Always return EFI_SUCCESS
 253 **/
 254 EFI_STATUS
 255 EFIAPI
 256 PeiMemoryDiscoveredNotify (
 257   IN EFI_PEI_SERVICES           **PeiServices,
 258   IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
 259   IN VOID                       *Ppi
 260   );
 261
 262 EFI_PEI_NOTIFY_DESCRIPTOR  mPeiMemoryDiscoveredNotifyDesc = {
 263   (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
 264   &gEfiPeiMemoryDiscoveredPpiGuid,
 265   PeiMemoryDiscoveredNotify
 266 };
 267
 268 /**
 269   This function is called after PEI core discover memory and finish migration.
 270
 271   @param[in] PeiServices    Pointer to PEI Services Table.
 272   @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
 273                             caused this function to execute.
 274   @param[in] Ppi            Pointer to the PPI data associated with this function.
 275
 276   @retval EFI_STATUS        Always return EFI_SUCCESS
 277 **/
 278 EFI_STATUS
 279 EFIAPI
 280 PeiMemoryDiscoveredNotify (
 281   IN EFI_PEI_SERVICES           **PeiServices,
 282   IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
 283   IN VOID                       *Ppi
 284   )
 285 {
 286   FSP_INFO_HEADER    *FspsHeaderPtr;
 287   UINT64             TimeStampCounterStart;
 288   EFI_STATUS         Status;
 289   VOID               *FspHobListPtr;
 290   EFI_HOB_GUID_TYPE  *GuidHob;
 291   FSPS_UPD_COMMON    *FspsUpdDataPtr;
 292   UINTN              *SourceData;
 293
 294   DEBUG ((DEBUG_INFO, "PeiMemoryDiscoveredNotify enter\n"));
 295   FspsUpdDataPtr = NULL;
 296
 297   FspsHeaderPtr = (FSP_INFO_HEADER *)FspFindFspHeader (PcdGet32 (PcdFspsBaseAddress));
 298   DEBUG ((DEBUG_INFO, "FspsHeaderPtr - 0x%x\n", FspsHeaderPtr));
 299   if (FspsHeaderPtr == NULL) {
 300     return EFI_DEVICE_ERROR;
 301   }
 302
 303   if ((GetFspsUpdDataAddress () == 0) && (FspsHeaderPtr->CfgRegionSize != 0) && (FspsHeaderPtr->CfgRegionOffset != 0)) {
 304     //
 305     // Copy default FSP-S UPD data from Flash
 306     //
 307     FspsUpdDataPtr = (FSPS_UPD_COMMON *)AllocateZeroPool ((UINTN)FspsHeaderPtr->CfgRegionSize);
 308     ASSERT (FspsUpdDataPtr != NULL);
 309     SourceData = (UINTN *)((UINTN)FspsHeaderPtr->ImageBase + (UINTN)FspsHeaderPtr->CfgRegionOffset);
 310     CopyMem (FspsUpdDataPtr, SourceData, (UINTN)FspsHeaderPtr->CfgRegionSize);
 311   } else {
 312     FspsUpdDataPtr = (FSPS_UPD_COMMON *)GetFspsUpdDataAddress ();
 313     ASSERT (FspsUpdDataPtr != NULL);
 314   }
 315
 316   UpdateFspsUpdData ((VOID *)FspsUpdDataPtr);
 317
 318   TimeStampCounterStart = AsmReadTsc ();
 319   PERF_START_EX (&gFspApiPerformanceGuid, "EventRec", NULL, 0, FSP_STATUS_CODE_SILICON_INIT | FSP_STATUS_CODE_COMMON_CODE | FSP_STATUS_CODE_API_ENTRY);
 320   Status = CallFspSiliconInit ((VOID *)FspsUpdDataPtr);
 321   PERF_END_EX (&gFspApiPerformanceGuid, "EventRec", NULL, 0, FSP_STATUS_CODE_SILICON_INIT | FSP_STATUS_CODE_COMMON_CODE | FSP_STATUS_CODE_API_EXIT);
 322   DEBUG ((DEBUG_INFO, "Total time spent executing FspSiliconInitApi: %d millisecond\n", DivU64x32 (GetTimeInNanoSecond (AsmReadTsc () - TimeStampCounterStart), 1000000)));
 323
 324   //
 325   // Reset the system if FSP API returned FSP_STATUS_RESET_REQUIRED status
 326   //
 327   if ((Status >= FSP_STATUS_RESET_REQUIRED_COLD) && (Status <= FSP_STATUS_RESET_REQUIRED_8)) {
 328     DEBUG ((DEBUG_INFO, "FspSiliconInitApi requested reset 0x%x\n", Status));
 329     CallFspWrapperResetSystem (Status);
 330   }
 331
 332   if (EFI_ERROR (Status)) {
 333     DEBUG ((DEBUG_ERROR, "ERROR - Failed to execute FspSiliconInitApi(), Status = %r\n", Status));
 334   }
 335
 336   DEBUG ((DEBUG_INFO, "FspSiliconInit status: 0x%x\n", Status));
 337   ASSERT_EFI_ERROR (Status);
 338
 339   Status = TestFspSiliconInitApiOutput ((VOID *)NULL);
 340   if (RETURN_ERROR (Status)) {
 341     DEBUG ((DEBUG_ERROR, "ERROR - TestFspSiliconInitApiOutput () fail, Status = %r\n", Status));
 342   }
 343
 344   //
 345   // Now FspHobList complete, process it
 346   //
 347   GuidHob = GetFirstGuidHob (&gFspHobGuid);
 348   ASSERT (GuidHob != NULL);
 349   FspHobListPtr = *(VOID **)GET_GUID_HOB_DATA (GuidHob);
 350   DEBUG ((DEBUG_INFO, "FspHobListPtr - 0x%x\n", FspHobListPtr));
 351   PostFspsHobProcess (FspHobListPtr);
 352
 353   //
 354   // Install FspSiliconInitDonePpi so that any other driver can consume this info.
 355   //
 356   Status = PeiServicesInstallPpi (&mPeiFspSiliconInitDonePpi);
 357   ASSERT_EFI_ERROR (Status);
 358
 359   return Status;
 360 }
 361
 362 /**
 363   Do FSP initialization in API mode.
 364
 365   @retval EFI_STATUS        Always return EFI_SUCCESS
 366 **/
 367 EFI_STATUS
 368 FspsWrapperInitApiMode (
 369   VOID
 370   )
 371 {
 372   EFI_STATUS     Status;
 373   EFI_BOOT_MODE  BootMode;
 374
 375   //
 376   // Register MemoryDiscovered Notify to run FspSiliconInit
 377   //
 378   Status = PeiServicesNotifyPpi (&mPeiMemoryDiscoveredNotifyDesc);
 379   ASSERT_EFI_ERROR (Status);
 380
 381   //
 382   // Register EndOfPei Notify for S3 to run FSP NotifyPhase
 383   //
 384   PeiServicesGetBootMode (&BootMode);
 385   if (BootMode == BOOT_ON_S3_RESUME) {
 386     Status = PeiServicesNotifyPpi (&mS3EndOfPeiNotifyDesc);
 387     ASSERT_EFI_ERROR (Status);
 388   }
 389
 390   return EFI_SUCCESS;
 391 }
 392
 393 /**
 394   Do FSP initialization in Dispatch mode.
 395
 396   @retval FSP initialization status.
 397 **/
 398 EFI_STATUS
 399 FspsWrapperInitDispatchMode (
 400   VOID
 401   )
 402 {
 403   EFI_STATUS                                             Status;
 404   EFI_PEI_FIRMWARE_VOLUME_INFO_MEASUREMENT_EXCLUDED_PPI  *MeasurementExcludedFvPpi;
 405   EFI_PEI_PPI_DESCRIPTOR                                 *MeasurementExcludedPpiList;
 406
 407   MeasurementExcludedFvPpi = AllocatePool (sizeof (*MeasurementExcludedFvPpi));
 408   ASSERT (MeasurementExcludedFvPpi != NULL);
 409   MeasurementExcludedFvPpi->Count          = 1;
 410   MeasurementExcludedFvPpi->Fv[0].FvBase   = PcdGet32 (PcdFspsBaseAddress);
 411   MeasurementExcludedFvPpi->Fv[0].FvLength = ((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdFspsBaseAddress))->FvLength;
 412
 413   MeasurementExcludedPpiList = AllocatePool (sizeof (*MeasurementExcludedPpiList));
 414   ASSERT (MeasurementExcludedPpiList != NULL);
 415   MeasurementExcludedPpiList->Flags = EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST;
 416   MeasurementExcludedPpiList->Guid  = &gEfiPeiFirmwareVolumeInfoMeasurementExcludedPpiGuid;
 417   MeasurementExcludedPpiList->Ppi   = MeasurementExcludedFvPpi;
 418
 419   Status = PeiServicesInstallPpi (MeasurementExcludedPpiList);
 420   ASSERT_EFI_ERROR (Status);
 421
 422   //
 423   // FSP-S Wrapper running in Dispatch mode and reports FSP-S FV to PEI dispatcher.
 424   //
 425   PeiServicesInstallFvInfoPpi (
 426     NULL,
 427     (VOID *)(UINTN)PcdGet32 (PcdFspsBaseAddress),
 428     (UINT32)((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdFspsBaseAddress))->FvLength,
 429     NULL,
 430     NULL
 431     );
 432   //
 433   // Register EndOfPei Nofity to run post FSP-S process.
 434   //
 435   Status = PeiServicesNotifyPpi (&mFspsWrapperEndOfPeiNotifyDesc);
 436   ASSERT_EFI_ERROR (Status);
 437   return Status;
 438 }
 439
 440 /**
 441   This function is called after TCG installed PPI.
 442
 443   @param[in] PeiServices    Pointer to PEI Services Table.
 444   @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
 445                             caused this function to execute.
 446   @param[in] Ppi            Pointer to the PPI data associated with this function.
 447
 448   @retval EFI_STATUS        Always return EFI_SUCCESS
 449 **/
 450 EFI_STATUS
 451 EFIAPI
 452 TcgPpiNotify (
 453   IN EFI_PEI_SERVICES           **PeiServices,
 454   IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
 455   IN VOID                       *Ppi
 456   );
 457
 458 EFI_PEI_NOTIFY_DESCRIPTOR  mTcgPpiNotifyDesc = {
 459   (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
 460   &gEdkiiTcgPpiGuid,
 461   TcgPpiNotify
 462 };
 463
 464 /**
 465   This function is called after TCG installed PPI.
 466
 467   @param[in] PeiServices    Pointer to PEI Services Table.
 468   @param[in] NotifyDesc     Pointer to the descriptor for the Notification event that
 469                             caused this function to execute.
 470   @param[in] Ppi            Pointer to the PPI data associated with this function.
 471
 472   @retval EFI_STATUS        Always return EFI_SUCCESS
 473 **/
 474 EFI_STATUS
 475 EFIAPI
 476 TcgPpiNotify (
 477   IN EFI_PEI_SERVICES           **PeiServices,
 478   IN EFI_PEI_NOTIFY_DESCRIPTOR  *NotifyDesc,
 479   IN VOID                       *Ppi
 480   )
 481 {
 482   UINT32  FspMeasureMask;
 483
 484   DEBUG ((DEBUG_INFO, "TcgPpiNotify FSPS\n"));
 485
 486   FspMeasureMask = PcdGet32 (PcdFspMeasurementConfig);
 487
 488   if ((FspMeasureMask & FSP_MEASURE_FSPS) != 0) {
 489     MeasureFspFirmwareBlob (
 490       0,
 491       "FSPS",
 492       PcdGet32 (PcdFspsBaseAddress),
 493       (UINT32)((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)PcdGet32 (PcdFspsBaseAddress))->FvLength
 494       );
 495   }
 496
 497   return EFI_SUCCESS;
 498 }
 499
 500 /**
 501   This is the entrypoint of PEIM.
 502
 503   @param[in] FileHandle  Handle of the file being invoked.
 504   @param[in] PeiServices Describes the list of possible PEI Services.
 505
 506   @retval EFI_SUCCESS if it completed successfully.
 507 **/
 508 EFI_STATUS
 509 EFIAPI
 510 FspsWrapperPeimEntryPoint (
 511   IN       EFI_PEI_FILE_HANDLE  FileHandle,
 512   IN CONST EFI_PEI_SERVICES     **PeiServices
 513   )
 514 {
 515   EFI_STATUS  Status;
 516
 517   DEBUG ((DEBUG_INFO, "FspsWrapperPeimEntryPoint\n"));
 518
 519   Status = PeiServicesNotifyPpi (&mTcgPpiNotifyDesc);
 520   ASSERT_EFI_ERROR (Status);
 521
 522   if (PcdGet8 (PcdFspModeSelection) == 1) {
 523     FspsWrapperInitApiMode ();
 524   } else {
 525     FspsWrapperInitDispatchMode ();
 526   }
 527
 528   return EFI_SUCCESS;
 529 }