EmulatorPkg/FlashMapPei/FlashMapPei.c

   1 /*++ @file
   2   PEIM to build GUIDed HOBs for platform specific flash map
   3
   4 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
   5 Portions copyright (c) 2011, Apple Inc. All rights reserved.
   6 SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10
  11 #include "PiPei.h"
  12
  13 #include <Guid/SystemNvDataGuid.h>
  14 #include <Ppi/EmuThunk.h>
  15
  16 #include <Library/DebugLib.h>
  17 #include <Library/PeimEntryPoint.h>
  18 #include <Library/HobLib.h>
  19 #include <Library/PeiServicesLib.h>
  20 #include <Library/PeiServicesTablePointerLib.h>
  21 #include <Library/BaseMemoryLib.h>
  22 #include <Library/PcdLib.h>
  23
  24 EFI_STATUS
  25 EFIAPI
  26 PeimInitializeFlashMap (
  27   IN       EFI_PEI_FILE_HANDLE       FileHandle,
  28   IN CONST EFI_PEI_SERVICES          **PeiServices
  29   )
  30 /*++
  31
  32 Routine Description:
  33   Build GUIDed HOBs for platform specific flash map
  34
  35 Arguments:
  36   FfsHeader   - A pointer to the EFI_FFS_FILE_HEADER structure.
  37   PeiServices - General purpose services available to every PEIM.
  38
  39 Returns:
  40   EFI_STATUS
  41
  42 **/
  43 {
  44   EFI_STATUS              Status;
  45   EMU_THUNK_PPI           *Thunk;
  46   EFI_PEI_PPI_DESCRIPTOR  *PpiDescriptor;
  47   EFI_PHYSICAL_ADDRESS    FdBase;
  48   EFI_PHYSICAL_ADDRESS    FdFixUp;
  49   UINT64                  FdSize;
  50
  51   DEBUG ((EFI_D_ERROR, "EmulatorPkg Flash Map PEIM Loaded\n"));
  52
  53   //
  54   // Get the Fwh Information PPI
  55   //
  56   Status = PeiServicesLocatePpi (
  57             &gEmuThunkPpiGuid, // GUID
  58             0,                 // INSTANCE
  59             &PpiDescriptor,     // EFI_PEI_PPI_DESCRIPTOR
  60             (VOID **)&Thunk       // PPI
  61             );
  62   ASSERT_EFI_ERROR (Status);
  63
  64   //
  65   // Assume that FD0 contains the Flash map.
  66   //
  67   Status = Thunk->FirmwareDevices (0, &FdBase, &FdSize, &FdFixUp);
  68   if (EFI_ERROR (Status)) {
  69     return Status;
  70   }
  71
  72   PcdSet64 (PcdFlashNvStorageVariableBase64, PcdGet64 (PcdEmuFlashNvStorageVariableBase) + FdFixUp);
  73   PcdSet64 (PcdFlashNvStorageFtwWorkingBase64, PcdGet64 (PcdEmuFlashNvStorageFtwWorkingBase) + FdFixUp);
  74   PcdSet64 (PcdFlashNvStorageFtwSpareBase64, PcdGet64 (PcdEmuFlashNvStorageFtwSpareBase) + FdFixUp);
  75
  76   return EFI_SUCCESS;
  77 }