Nt32Pkg/WinNtFlashMapPei/FlashMap.c

   1 /**@file
   2
   3 Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
   4 (C) Copyright 2016 Hewlett Packard Enterprise Development LP<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 Module Name:
  14
  15   FlashMap.c
  16
  17 Abstract:
  18
  19   PEIM to build GUIDed HOBs for platform specific flash map
  20
  21 **/
  22
  23 //
  24 // The package level header files this module uses
  25 //
  26 #include <PiPei.h>
  27
  28 #include <WinNtPeim.h>
  29 //
  30 // The protocols, PPI and GUID defintions for this module
  31 //
  32 #include <Ppi/NtFwh.h>
  33
  34 #include <Library/DebugLib.h>
  35 #include <Library/PcdLib.h>
  36 #include <Library/PeiServicesLib.h>
  37
  38 EFI_STATUS
  39 EFIAPI
  40 PeimInitializeFlashMap (
  41   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  42   IN 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   NT_FWH_PPI              *NtFwhPpi;
  61   EFI_PHYSICAL_ADDRESS    FdBase;
  62   UINT64                  FdSize;
  63   EFI_PEI_PPI_DESCRIPTOR  *PpiDescriptor;
  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             &gNtFwhPpiGuid, // GUID
  72             0,              // INSTANCE
  73             &PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
  74             (VOID**)&NtFwhPpi       // PPI
  75             );
  76   ASSERT_EFI_ERROR (Status);
  77
  78   //
  79   // Assume that FD0 contains the Flash map.
  80   //
  81   Status = NtFwhPpi->NtFwh (0, &FdBase, &FdSize);
  82   if (EFI_ERROR (Status)) {
  83     return Status;
  84   }
  85
  86   //
  87   // Relocate the base of FV region
  88   //
  89   if (FdBase >= BASE_4GB) {
  90     PcdSet64 (PcdFlashNvStorageVariableBase64, PcdGet32 (PcdWinNtFlashNvStorageVariableBase) + (UINT64) FdBase);
  91     PcdSet64 (PcdFlashNvStorageFtwWorkingBase64, PcdGet32 (PcdWinNtFlashNvStorageFtwWorkingBase) + (UINT64) FdBase);
  92     PcdSet64 (PcdFlashNvStorageFtwSpareBase64, PcdGet32 (PcdWinNtFlashNvStorageFtwSpareBase) + (UINT64) FdBase);
  93   } else {
  94     PcdSet32 (PcdFlashNvStorageVariableBase, PcdGet32 (PcdWinNtFlashNvStorageVariableBase) + (UINT32) FdBase);
  95     PcdSet32 (PcdFlashNvStorageFtwWorkingBase, PcdGet32 (PcdWinNtFlashNvStorageFtwWorkingBase) + (UINT32) FdBase);
  96     PcdSet32 (PcdFlashNvStorageFtwSpareBase, PcdGet32 (PcdWinNtFlashNvStorageFtwSpareBase) + (UINT32) FdBase);
  97   }
  98
  99   return EFI_SUCCESS;
 100 }
 101