audk/MdePkg/Include/Protocol/SmmControl2.h

36 lines
1.3 KiB
C

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