UnixPkg/UnixFlashMapPei/FlashMap.c

   1 /*++
   2
   3 Copyright (c) 2006 - 2008, Intel Corporation
   4 All rights reserved. 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 <Guid/FirmwareFileSystem.h>
  27 #include <Ppi/UnixFwh.h>
  28 #include <Protocol/FirmwareVolumeBlock.h>
  29
  30 #include <Library/DebugLib.h>
  31 #include <Library/PeimEntryPoint.h>
  32 #include <Library/HobLib.h>
  33 #include <Library/PeiServicesLib.h>
  34 #include <Library/PeiServicesTablePointerLib.h>
  35 #include <Library/BaseMemoryLib.h>
  36 #include <Library/PcdLib.h>
  37
  38 EFI_STATUS
  39 EFIAPI
  40 PeimInitializeFlashMap (
  41   IN       EFI_PEI_FILE_HANDLE       FileHandle,
  42   IN CONST EFI_PEI_SERVICES          **PeiServices
  43   )
  44 /*++
  45
  46 Routine Description:
  47   Build GUIDed HOBs for platform specific flash map
  48
  49 Arguments:
  50   FfsHeader   - A pointer to the EFI_FFS_FILE_HEADER structure.
  51   PeiServices - General purpose services available to every PEIM.
  52
  53 Returns:
  54   EFI_STATUS
  55
  56 --*/
  57 // TODO:    EFI_SUCCESS - add return value to function comment
  58 {
  59   EFI_STATUS              Status;
  60   UNIX_FWH_PPI            *UnixFwhPpi;
  61   EFI_PEI_PPI_DESCRIPTOR  *PpiDescriptor;
  62   EFI_PHYSICAL_ADDRESS    FdBase;
  63   EFI_PHYSICAL_ADDRESS    FdFixUp;
  64   UINT64                  FdSize;
  65
  66   DEBUG ((EFI_D_ERROR, "NT 32 Flash Map PEIM Loaded\n"));
  67
  68   //
  69   // Get the Fwh Information PPI
  70   //
  71   Status = PeiServicesLocatePpi (
  72             &gUnixFwhPpiGuid, // GUID
  73             0,              // INSTANCE
  74             &PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
  75             (VOID **)&UnixFwhPpi       // PPI
  76             );
  77   ASSERT_EFI_ERROR (Status);
  78
  79   //
  80   // Assume that FD0 contains the Flash map.
  81   //
  82   Status = UnixFwhPpi->UnixFwh (0, &FdBase, &FdSize, &FdFixUp);
  83   if (EFI_ERROR (Status)) {
  84     return Status;
  85   }
  86
  87   PcdSet32 (PcdFlashNvStorageVariableBase, PcdGet32 (PcdUnixFlashNvStorageVariableBase) + (UINT32)FdFixUp);
  88   PcdSet32 (PcdFlashNvStorageFtwWorkingBase, PcdGet32 (PcdUnixFlashNvStorageFtwWorkingBase) + (UINT32)FdFixUp);
  89   PcdSet32 (PcdFlashNvStorageFtwSpareBase, PcdGet32 (PcdUnixFlashNvStorageFtwSpareBase) + (UINT32)FdFixUp);
  90
  91   return EFI_SUCCESS;
  92 }