Nt32Pkg/WinNtThunkPPIToProtocolPeim/WinNtThunkPPIToProtocolPeim.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     WinNtStuff.c
  15
  16 Abstract:
  17
  18     Tiano PEIM to abstract construction of firmware volume in a Windows NT environment.
  19
  20 Revision History
  21
  22 --*/
  23
  24 //
  25 // The package level header files this module uses
  26 //
  27 #include <PiPei.h>
  28 #include <WinNtPeim.h>
  29 //
  30 // The protocols, PPI and GUID defintions for this module
  31 //
  32 #include <Protocol/WinNtThunk.h>
  33 #include <Ppi/NtThunk.h>
  34 //
  35 // The Library classes this module consumes
  36 //
  37 #include <Library/DebugLib.h>
  38 #include <Library/PeimEntryPoint.h>
  39 #include <Library/HobLib.h>
  40
  41 EFI_STATUS
  42 EFIAPI
  43 PeimInitializeWinNtThunkPPIToProtocolPeim (
  44   IN EFI_FFS_FILE_HEADER       *FfsHeader,
  45   IN EFI_PEI_SERVICES          **PeiServices
  46   )
  47 /*++
  48
  49 Routine Description:
  50
  51   Perform a call-back into the SEC simulator to get NT Stuff
  52
  53 Arguments:
  54
  55   PeiServices - General purpose services available to every PEIM.
  56
  57 Returns:
  58
  59   None
  60
  61 --*/
  62 // TODO:    FfsHeader - add argument and description to function comment
  63 {
  64   EFI_STATUS              Status;
  65   EFI_PEI_PPI_DESCRIPTOR  *PpiDescriptor;
  66   PEI_NT_THUNK_PPI        *PeiNtService;
  67   VOID                    *Ptr;
  68
  69   DEBUG ((EFI_D_ERROR, "NT 32 WinNT Stuff PEIM Loaded\n"));
  70
  71   Status = (**PeiServices).LocatePpi (
  72                             PeiServices,
  73                             &gPeiNtThunkPpiGuid,  // GUID
  74                             0,                    // INSTANCE
  75                             &PpiDescriptor,       // EFI_PEI_PPI_DESCRIPTOR
  76                             &PeiNtService         // PPI
  77                             );
  78   ASSERT_EFI_ERROR (Status);
  79
  80   Ptr = PeiNtService->NtThunk ();
  81
  82   BuildGuidDataHob (
  83     &gEfiWinNtThunkProtocolGuid,         // Guid
  84     &Ptr,                                // Buffer
  85     sizeof (VOID *)                      // Sizeof Buffer
  86     );
  87   return Status;
  88 }