MdePkg/Include/Protocol/SmmControl2.h

   1 /** @file
   2   EFI SMM Control2 Protocol as defined in the PI 1.2 specification.
   3
   4   This protocol is used initiate synchronous SMI activations. This protocol could be published by a
   5   processor driver to abstract the SMI IPI or a driver which abstracts the ASIC that is supporting the
   6   APM port. Because of the possibility of performing SMI IPI transactions, the ability to generate this
   7   event from a platform chipset agent is an optional capability for both IA-32 and x64-based systems.
   8
   9   The EFI_SMM_CONTROL2_PROTOCOL is produced by a runtime driver. It provides  an
  10   abstraction of the platform hardware that generates an SMI.  There are often I/O ports that, when
  11   accessed, will generate the SMI.  Also, the hardware optionally supports the periodic generation of
  12   these signals.
  13
  14   Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>
  15   SPDX-License-Identifier: BSD-2-Clause-Patent
  16
  17 **/
  18
  19 #ifndef _SMM_CONTROL2_H_
  20 #define _SMM_CONTROL2_H_
  21
  22 #include <Protocol/MmControl.h>
  23
  24 #define EFI_SMM_CONTROL2_PROTOCOL_GUID  EFI_MM_CONTROL_PROTOCOL_GUID
  25
  26 typedef EFI_MM_CONTROL_PROTOCOL  EFI_SMM_CONTROL2_PROTOCOL;
  27 typedef EFI_MM_PERIOD            EFI_SMM_PERIOD;
  28
  29 typedef EFI_MM_ACTIVATE EFI_SMM_ACTIVATE2;
  30
  31 typedef EFI_MM_DEACTIVATE EFI_SMM_DEACTIVATE2;
  32 extern EFI_GUID  gEfiSmmControl2ProtocolGuid;
  33
  34 #endif