IntelFspWrapperPkg/FspInitPei/FspInitPei.c

   1 /** @file
   2   This PEIM initialize FSP.
   3
   4   Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR>
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9
  10 #include "FspInitPei.h"
  11
  12 /**
  13   This is the entrypoint of PEIM
  14
  15   @param[in] FileHandle  Handle of the file being invoked.
  16   @param[in] PeiServices Describes the list of possible PEI Services.
  17
  18   @retval EFI_SUCCESS if it completed successfully.
  19 **/
  20 EFI_STATUS
  21 EFIAPI
  22 FspPeiEntryPoint (
  23   IN       EFI_PEI_FILE_HANDLE  FileHandle,
  24   IN CONST EFI_PEI_SERVICES     **PeiServices
  25   )
  26 {
  27   FSP_INFO_HEADER      *FspHeader;
  28   UINT8                PcdFspApiVersion;
  29
  30   DEBUG ((DEBUG_INFO, "FspPeiEntryPoint\n"));
  31   PcdFspApiVersion = 1;
  32
  33   FspHeader = FspFindFspHeader (PcdGet32 (PcdFlashFvFspBase));
  34   DEBUG ((DEBUG_INFO, "FspHeader - 0x%x\n", FspHeader));
  35   if (FspHeader == NULL) {
  36     return EFI_DEVICE_ERROR;
  37   }
  38
  39   ASSERT (FspHeader->TempRamInitEntryOffset != 0);
  40   ASSERT (FspHeader->FspInitEntryOffset != 0);
  41   ASSERT (FspHeader->NotifyPhaseEntryOffset != 0);
  42
  43   if ((PcdGet8 (PcdFspApiVersion) >= 2) &&
  44       (FspHeader->HeaderRevision >= FSP_HEADER_REVISION_2) &&
  45       (FspHeader->ApiEntryNum >= 6) ) {
  46     ASSERT (FspHeader->FspMemoryInitEntryOffset != 0);
  47     ASSERT (FspHeader->TempRamExitEntryOffset != 0);
  48     ASSERT (FspHeader->FspSiliconInitEntryOffset != 0);
  49     PcdFspApiVersion = PcdGet8 (PcdFspApiVersion);
  50   }
  51   DEBUG ((DEBUG_INFO, "PcdFspApiVersion - 0x%x\n", PcdFspApiVersion));
  52
  53   if (PcdFspApiVersion == 1) {
  54     PeiFspInitV1 (FspHeader);
  55   } else {
  56     PeiFspInitV2 (FspHeader);
  57   }
  58
  59   return EFI_SUCCESS;
  60 }