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 SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 Module Name:
   8
   9   FlashMap.c
  10
  11 Abstract:
  12
  13   PEIM to build GUIDed HOBs for platform specific flash map
  14
  15 **/
  16
  17 //
  18 // The package level header files this module uses
  19 //
  20 #include <PiPei.h>
  21
  22 #include <WinNtPeim.h>
  23 //
  24 // The protocols, PPI and GUID defintions for this module
  25 //
  26 #include <Ppi/NtFwh.h>
  27
  28 #include <Library/DebugLib.h>
  29 #include <Library/PcdLib.h>
  30 #include <Library/PeiServicesLib.h>
  31
  32 EFI_STATUS
  33 EFIAPI
  34 PeimInitializeFlashMap (
  35   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  36   IN EFI_PEI_SERVICES          **PeiServices
  37   )
  38 /*++
  39
  40 Routine Description:
  41   Build GUIDed HOBs for platform specific flash map
  42
  43 Arguments:
  44   FfsHeader   - A pointer to the EFI_FFS_FILE_HEADER structure.
  45   PeiServices - General purpose services available to every PEIM.
  46
  47 Returns:
  48   EFI_STATUS
  49
  50 --*/
  51 // TODO:    EFI_SUCCESS - add return value to function comment
  52 {
  53   EFI_STATUS              Status;
  54   NT_FWH_PPI              *NtFwhPpi;
  55   EFI_PHYSICAL_ADDRESS    FdBase;
  56   UINT64                  FdSize;
  57   EFI_PEI_PPI_DESCRIPTOR  *PpiDescriptor;
  58
  59   DEBUG ((EFI_D_ERROR, "NT 32 Flash Map PEIM Loaded\n"));
  60
  61   //
  62   // Get the Fwh Information PPI
  63   //
  64   Status = PeiServicesLocatePpi (
  65             &gNtFwhPpiGuid, // GUID
  66             0,              // INSTANCE
  67             &PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
  68             (VOID**)&NtFwhPpi       // PPI
  69             );
  70   ASSERT_EFI_ERROR (Status);
  71
  72   //
  73   // Assume that FD0 contains the Flash map.
  74   //
  75   Status = NtFwhPpi->NtFwh (0, &FdBase, &FdSize);
  76   if (EFI_ERROR (Status)) {
  77     return Status;
  78   }
  79
  80   //
  81   // Relocate the base of FV region
  82   //
  83   if (FdBase >= BASE_4GB) {
  84     PcdSet64 (PcdFlashNvStorageVariableBase64, PcdGet32 (PcdWinNtFlashNvStorageVariableBase) + (UINT64) FdBase);
  85     PcdSet64 (PcdFlashNvStorageFtwWorkingBase64, PcdGet32 (PcdWinNtFlashNvStorageFtwWorkingBase) + (UINT64) FdBase);
  86     PcdSet64 (PcdFlashNvStorageFtwSpareBase64, PcdGet32 (PcdWinNtFlashNvStorageFtwSpareBase) + (UINT64) FdBase);
  87   } else {
  88     PcdSet32 (PcdFlashNvStorageVariableBase, PcdGet32 (PcdWinNtFlashNvStorageVariableBase) + (UINT32) FdBase);
  89     PcdSet32 (PcdFlashNvStorageFtwWorkingBase, PcdGet32 (PcdWinNtFlashNvStorageFtwWorkingBase) + (UINT32) FdBase);
  90     PcdSet32 (PcdFlashNvStorageFtwSpareBase, PcdGet32 (PcdWinNtFlashNvStorageFtwSpareBase) + (UINT32) FdBase);
  91   }
  92
  93   return EFI_SUCCESS;
  94 }
  95