EmulatorPkg/ResetRuntimeDxe/Reset.c

/*++ @file
  Reset Architectural Protocol as defined in UEFI/PI under Emulation

Copyright (c) 2004 - 2009, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2010 - 2011, Apple Inc. All rights reserved.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#include <PiDxe.h>

#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/EmuThunkLib.h>

#include <Protocol/Reset.h>


VOID
EFIAPI
EmuResetSystem (
  IN EFI_RESET_TYPE   ResetType,
  IN EFI_STATUS       ResetStatus,
  IN UINTN            DataSize,
  IN VOID             *ResetData OPTIONAL
  )
{
  EFI_STATUS  Status;
  UINTN       HandleCount;
  EFI_HANDLE  *HandleBuffer;
  UINTN       Index;

  //
  // Disconnect all
  //
  Status = gBS->LocateHandleBuffer (
                  AllHandles,
                  NULL,
                  NULL,
                  &HandleCount,
                  &HandleBuffer
                  );
  if (!EFI_ERROR (Status)) {
    for (Index = 0; Index < HandleCount; Index++) {
      Status = gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);
    }

    gBS->FreePool (HandleBuffer);
  }


  //
  // Discard ResetType, always return 0 as exit code
  //
  gEmuThunk->Exit (0);

  //
  // Should never go here
  //
  ASSERT (FALSE);

  return;
}



EFI_STATUS
EFIAPI
InitializeEmuReset (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
/*++

Routine Description:


Arguments:

  ImageHandle of the loaded driver
  Pointer to the System Table

Returns:

  Status
**/
{
  EFI_STATUS  Status;
  EFI_HANDLE  Handle;

  SystemTable->RuntimeServices->ResetSystem = EmuResetSystem;

  Handle = NULL;
  Status = gBS->InstallMultipleProtocolInterfaces (
                  &Handle,
                  &gEfiResetArchProtocolGuid,
                  NULL,
                  NULL
                  );
  ASSERT_EFI_ERROR (Status);

  return Status;
}