EmulatorPkg/ResetRuntimeDxe/Reset.c

   1 /*++ @file
   2   Reset Architectural Protocol as defined in UEFI/PI under Emulation
   3
   4 Copyright (c) 2004 - 2009, Intel Corporation. All rights reserved.<BR>
   5 Portions copyright (c) 2010 - 2011, Apple Inc. All rights reserved.
   6 This program and the accompanying materials
   7 are licensed and made available under the terms and conditions of the BSD License
   8 which accompanies this distribution.  The full text of the license may be found at
   9 http://opensource.org/licenses/bsd-license.php
  10
  11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include <PiDxe.h>
  17
  18 #include <Library/BaseLib.h>
  19 #include <Library/DebugLib.h>
  20 #include <Library/UefiLib.h>
  21 #include <Library/UefiDriverEntryPoint.h>
  22 #include <Library/MemoryAllocationLib.h>
  23 #include <Library/UefiBootServicesTableLib.h>
  24 #include <Library/EmuThunkLib.h>
  25
  26 #include <Protocol/Reset.h>
  27
  28
  29 VOID
  30 EFIAPI
  31 EmuResetSystem (
  32   IN EFI_RESET_TYPE   ResetType,
  33   IN EFI_STATUS       ResetStatus,
  34   IN UINTN            DataSize,
  35   IN VOID             *ResetData OPTIONAL
  36   )
  37 {
  38   EFI_STATUS  Status;
  39   UINTN       HandleCount;
  40   EFI_HANDLE  *HandleBuffer;
  41   UINTN       Index;
  42
  43   //
  44   // Disconnect all
  45   //
  46   Status = gBS->LocateHandleBuffer (
  47                   AllHandles,
  48                   NULL,
  49                   NULL,
  50                   &HandleCount,
  51                   &HandleBuffer
  52                   );
  53   if (!EFI_ERROR (Status)) {
  54     for (Index = 0; Index < HandleCount; Index++) {
  55       Status = gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);
  56     }
  57
  58     gBS->FreePool (HandleBuffer);
  59   }
  60
  61
  62   //
  63   // Discard ResetType, always return 0 as exit code
  64   //
  65   gEmuThunk->Exit (0);
  66
  67   //
  68   // Should never go here
  69   //
  70   ASSERT (FALSE);
  71
  72   return;
  73 }
  74
  75
  76
  77 EFI_STATUS
  78 EFIAPI
  79 InitializeEmuReset (
  80   IN EFI_HANDLE        ImageHandle,
  81   IN EFI_SYSTEM_TABLE  *SystemTable
  82   )
  83 /*++
  84
  85 Routine Description:
  86
  87
  88 Arguments:
  89
  90   ImageHandle of the loaded driver
  91   Pointer to the System Table
  92
  93 Returns:
  94
  95   Status
  96 **/
  97 {
  98   EFI_STATUS  Status;
  99   EFI_HANDLE  Handle;
 100
 101   SystemTable->RuntimeServices->ResetSystem = EmuResetSystem;
 102
 103   Handle = NULL;
 104   Status = gBS->InstallMultipleProtocolInterfaces (
 105                   &Handle,
 106                   &gEfiResetArchProtocolGuid,
 107                   NULL,
 108                   NULL
 109                   );
 110   ASSERT_EFI_ERROR (Status);
 111
 112   return Status;
 113 }
 114