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 This program and the accompanying materials
   7 are licensed and made available under the terms and conditions of the BSD License
   8 which accompanies this distribution.  The full text of the license may be found at
   9 http://opensource.org/licenses/bsd-license.php
  10
  11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16
  17 #include "PiPei.h"
  18
  19 #include <Guid/SystemNvDataGuid.h>
  20 #include <Ppi/EmuThunk.h>
  21
  22 #include <Library/DebugLib.h>
  23 #include <Library/PeimEntryPoint.h>
  24 #include <Library/HobLib.h>
  25 #include <Library/PeiServicesLib.h>
  26 #include <Library/PeiServicesTablePointerLib.h>
  27 #include <Library/BaseMemoryLib.h>
  28 #include <Library/PcdLib.h>
  29
  30 EFI_STATUS
  31 EFIAPI
  32 PeimInitializeFlashMap (
  33   IN       EFI_PEI_FILE_HANDLE       FileHandle,
  34   IN CONST EFI_PEI_SERVICES          **PeiServices
  35   )
  36 /*++
  37
  38 Routine Description:
  39   Build GUIDed HOBs for platform specific flash map
  40
  41 Arguments:
  42   FfsHeader   - A pointer to the EFI_FFS_FILE_HEADER structure.
  43   PeiServices - General purpose services available to every PEIM.
  44
  45 Returns:
  46   EFI_STATUS
  47
  48 **/
  49 {
  50   EFI_STATUS              Status;
  51   EMU_THUNK_PPI           *Thunk;
  52   EFI_PEI_PPI_DESCRIPTOR  *PpiDescriptor;
  53   EFI_PHYSICAL_ADDRESS    FdBase;
  54   EFI_PHYSICAL_ADDRESS    FdFixUp;
  55   UINT64                  FdSize;
  56
  57   DEBUG ((EFI_D_ERROR, "EmulatorPkg Flash Map PEIM Loaded\n"));
  58
  59   //
  60   // Get the Fwh Information PPI
  61   //
  62   Status = PeiServicesLocatePpi (
  63             &gEmuThunkPpiGuid, // GUID
  64             0,                 // INSTANCE
  65             &PpiDescriptor,     // EFI_PEI_PPI_DESCRIPTOR
  66             (VOID **)&Thunk       // PPI
  67             );
  68   ASSERT_EFI_ERROR (Status);
  69
  70   //
  71   // Assume that FD0 contains the Flash map.
  72   //
  73   Status = Thunk->FirmwareDevices (0, &FdBase, &FdSize, &FdFixUp);
  74   if (EFI_ERROR (Status)) {
  75     return Status;
  76   }
  77
  78   PcdSet64 (PcdFlashNvStorageVariableBase64, PcdGet64 (PcdEmuFlashNvStorageVariableBase) + FdFixUp);
  79   PcdSet64 (PcdFlashNvStorageFtwWorkingBase64, PcdGet64 (PcdEmuFlashNvStorageFtwWorkingBase) + FdFixUp);
  80   PcdSet64 (PcdFlashNvStorageFtwSpareBase64, PcdGet64 (PcdEmuFlashNvStorageFtwSpareBase) + FdFixUp);
  81
  82   return EFI_SUCCESS;
  83 }