IntelFspWrapperPkg/FspInitPei/FspInitPei.c

   1 /** @file
   2   This PEIM initialize FSP.
   3
   4   Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15
  16 #include "FspInitPei.h"
  17
  18 /**
  19   This is the entrypoint of PEIM
  20
  21   @param[in] FileHandle  Handle of the file being invoked.
  22   @param[in] PeiServices Describes the list of possible PEI Services.
  23
  24   @retval EFI_SUCCESS if it completed successfully.
  25 **/
  26 EFI_STATUS
  27 EFIAPI
  28 FspPeiEntryPoint (
  29   IN       EFI_PEI_FILE_HANDLE  FileHandle,
  30   IN CONST EFI_PEI_SERVICES     **PeiServices
  31   )
  32 {
  33   FSP_INFO_HEADER      *FspHeader;
  34   UINT8                PcdFspApiVersion;
  35
  36   DEBUG ((DEBUG_INFO, "FspPeiEntryPoint\n"));
  37   PcdFspApiVersion = 1;
  38
  39   FspHeader = FspFindFspHeader (PcdGet32 (PcdFlashFvFspBase));
  40   DEBUG ((DEBUG_INFO, "FspHeader - 0x%x\n", FspHeader));
  41   if (FspHeader == NULL) {
  42     return EFI_DEVICE_ERROR;
  43   }
  44
  45   if ((PcdGet8 (PcdFspApiVersion) >= 2) &&
  46       (FspHeader->HeaderRevision >= FSP_HEADER_REVISION_2) &&
  47       (FspHeader->ApiEntryNum >= 6) &&
  48       (FspHeader->FspMemoryInitEntryOffset != 0) &&
  49       (FspHeader->TempRamExitEntryOffset != 0) &&
  50       (FspHeader->FspSiliconInitEntryOffset != 0) ) {
  51     PcdFspApiVersion = FSP_HEADER_REVISION_2;
  52   }
  53   DEBUG ((DEBUG_INFO, "PcdFspApiVersion - 0x%x\n", PcdFspApiVersion));
  54
  55   if (PcdFspApiVersion == FSP_HEADER_REVISION_1) {
  56     PeiFspInitV1 (FspHeader);
  57   } else {
  58     PeiFspInitV2 (FspHeader);
  59   }
  60
  61   return EFI_SUCCESS;
  62 }