Nt32Pkg/WinNtFlashMapPei/FlashMap.c

   1 /*++
   2
   3 Copyright (c) 2006, 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 // The package level header files this module uses
  24 //
  25 #include <PiPei.h>
  26
  27 #include <WinNtPeim.h>
  28 //
  29 // The protocols, PPI and GUID defintions for this module
  30 //
  31 #include <Ppi/NtFwh.h>
  32
  33 #include <Library/DebugLib.h>
  34 #include <Library/PcdLib.h>
  35 #include <Library/PeiServicesLib.h>
  36
  37 EFI_STATUS
  38 EFIAPI
  39 PeimInitializeFlashMap (
  40   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  41   IN 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   NT_FWH_PPI              *NtFwhPpi;
  60   EFI_PHYSICAL_ADDRESS    FdBase;
  61   UINT64                  FdSize;
  62   EFI_PEI_PPI_DESCRIPTOR  *PpiDescriptor;
  63
  64   DEBUG ((EFI_D_ERROR, "NT 32 Flash Map PEIM Loaded\n"));
  65
  66   __asm int 3;
  67   //
  68   // Get the Fwh Information PPI
  69   //
  70   Status = PeiServicesLocatePpi (
  71             &gNtFwhPpiGuid, // GUID
  72             0,              // INSTANCE
  73             &PpiDescriptor, // EFI_PEI_PPI_DESCRIPTOR
  74             &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   PcdSet32 (PcdFlashNvStorageVariableBase, PcdGet32 (PcdWinNtFlashNvStorageVariableBase) + (UINT32) FdBase);
  90   PcdSet32 (PcdFlashNvStorageFtwWorkingBase, PcdGet32 (PcdWinNtFlashNvStorageFtwWorkingBase) + (UINT32) FdBase);
  91   PcdSet32 (PcdFlashNvStorageFtwSpareBase, PcdGet32 (PcdWinNtFlashNvStorageFtwWorkingBase) + (UINT32) FdBase);
  92
  93   return EFI_SUCCESS;
  94 }
  95