/*++

Copyright (c)  1999  - 2014, Intel Corporation. All rights reserved

  This program and the accompanying materials are licensed and made available under
  the terms and conditions of the BSD License that 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.



Module Name:

  TcoReset.h

Abstract:

  Protocol to communicate with ICH TCO.

GUID Info:
 {A6A79162-E325-4c30-BCC3-59373064EFB3}
 0xa6a79162, 0xe325, 0x4c30, 0xbc, 0xc3, 0x59, 0x37, 0x30, 0x64, 0xef, 0xb3);


--*/

#ifndef _TCO_RESET_H_
#define _TCO_RESET_H_


#define EFI_TCO_RESET_PROTOCOL_GUID  \
  {0xa6a79162, 0xe325, 0x4c30, 0xbc, 0xc3, 0x59, 0x37, 0x30, 0x64, 0xef, 0xb3}

typedef struct _EFI_TCO_RESET_PROTOCOL EFI_TCO_RESET_PROTOCOL;

typedef
EFI_STATUS
(EFIAPI *EFI_TCO_RESET_PROTOCOL_ENABLE_TCO_RESET) (
  IN      UINT32            *RcrbGcsSaveValue
  )
/*++

Routine Description:

  Enables the TCO timer to reset the system in case of a system hang.  This is
  used when writing the clock registers.

Arguments:

  RcrbGcsSaveValue  - This is the value of the RCRB GCS register before it is
                      changed by this procedure.  This will be used to restore
                      the settings of this register in PpiDisableTcoReset.

Returns:

  EFI_STATUS

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_TCO_RESET_PROTOCOL_DISABLE_TCO_RESET) (
  OUT     UINT32    RcrbGcsRestoreValue
  )
/*++

Routine Description:

  Disables the TCO timer.  This is used after writing the clock registers.

Arguments:

  RcrbGcsRestoreValue - Value saved in PpiEnableTcoReset so that it can
                        restored.

Returns:

  EFI_STATUS

--*/
;

typedef struct _EFI_TCO_RESET_PROTOCOL {
  EFI_TCO_RESET_PROTOCOL_ENABLE_TCO_RESET       EnableTcoReset;
  EFI_TCO_RESET_PROTOCOL_DISABLE_TCO_RESET      DisableTcoReset;
} EFI_TCO_RESET_PROTOCOL;

extern EFI_GUID gEfiTcoResetProtocolGuid;

#endif