UnixPkg/UnixFlashMapPei/FlashMap.c

   1 /*++
   2
   3 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
   4 This program and the accompanying materials
   5 are licensed and made available under the terms and conditions of the BSD License
   6 which accompanies this distribution.  The full text of the license may be found at
   7 http://opensource.org/licenses/bsd-license.php
   8
   9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 Module Name:
  13
  14   FlashMap.c
  15
  16 Abstract:
  17
  18   PEIM to build GUIDed HOBs for platform specific flash map
  19
  20 --*/
  21
  22
  23 #include "PiPei.h"
  24
  25 #include <Guid/SystemNvDataGuid.h>
  26 #include <Ppi/UnixFwh.h>
  27 #include <Protocol/FirmwareVolumeBlock.h>
  28
  29 #include <Library/DebugLib.h>
  30 #include <Library/PeimEntryPoint.h>
  31 #include <Library/HobLib.h>
  32 #include <Library/PeiServicesLib.h>
  33 #include <Library/PeiServicesTablePointerLib.h>
  34 #include <Library/BaseMemoryLib.h>
  35 #include <Library/PcdLib.h>
  36
  37 EFI_STATUS
  38 EFIAPI
  39 PeimInitializeFlashMap (
  40   IN       EFI_PEI_FILE_HANDLE       FileHandle,
  41   IN CONST EFI_PEI_SERVICES          **PeiServices
  42   )
  43 /*++
  44
  45 Routine Description:
  46   Build GUIDed HOBs for platform specific flash map
  47
  48 Arguments:
  49   FfsHeader   - A pointer to the EFI_FFS_FILE_HEADER structure.
  50   PeiServices - General purpose services available to every PEIM.
  51
  52 Returns:
  53   EFI_STATUS
  54
  55 --*/
  56 // TODO:    EFI_SUCCESS - add return value to function comment
  57 {
  58   EFI_STATUS              Status;
  59   UNIX_FWH_PPI            *UnixFwhPpi;
  60   EFI_PEI_PPI_DESCRIPTOR  *PpiDescriptor;
  61   EFI_PHYSICAL_ADDRESS    FdBase;
  62   EFI_PHYSICAL_ADDRESS    FdFixUp;
  63   UINT64                  FdSize;
  64
  65   DEBUG ((EFI_D_ERROR, "NT 32 Flash Map PEIM Loaded\n"));
  66
  67   //
  68   // Get the Fwh Information PPI
  69   //
  70   Status = PeiServicesLocatePpi (
  71             &gUnixFwhPpiGuid, // GUID
  72             0,              // INSTANCE
  73             &PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
  74             (VOID **)&UnixFwhPpi       // PPI
  75             );
  76   ASSERT_EFI_ERROR (Status);
  77
  78   //
  79   // Assume that FD0 contains the Flash map.
  80   //
  81   Status = UnixFwhPpi->UnixFwh (0, &FdBase, &FdSize, &FdFixUp);
  82   if (EFI_ERROR (Status)) {
  83     return Status;
  84   }
  85
  86   PcdSet64 (PcdFlashNvStorageVariableBase64, PcdGet64 (PcdUnixFlashNvStorageVariableBase) + FdFixUp);
  87   PcdSet64 (PcdFlashNvStorageFtwWorkingBase64, PcdGet64 (PcdUnixFlashNvStorageFtwWorkingBase) + FdFixUp);
  88   PcdSet64 (PcdFlashNvStorageFtwSpareBase64, PcdGet64 (PcdUnixFlashNvStorageFtwSpareBase) + FdFixUp);
  89
  90   return EFI_SUCCESS;
  91 }