SmmAccess2.h File Reference

#include <Protocol/MmAccess.h>

Go to the source code of this file.

Macros
#define	EFI_SMM_ACCESS2_PROTOCOL_GUID   EFI_MM_ACCESS_PROTOCOL_GUID

Typedefs
typedef EFI_MM_ACCESS_PROTOCOL	EFI_SMM_ACCESS2_PROTOCOL
typedef EFI_MM_OPEN	EFI_SMM_OPEN2
typedef EFI_MM_CLOSE	EFI_SMM_CLOSE2
typedef EFI_MM_LOCK	EFI_SMM_LOCK2
typedef EFI_MM_CAPABILITIES	EFI_SMM_CAPABILITIES2

Variables
EFI_GUID	gEfiSmmAccess2ProtocolGuid

Detailed Description

EFI SMM Access2 Protocol as defined in the PI 1.2 specification.

This protocol is used to control the visibility of the SMRAM on the platform. It abstracts the location and characteristics of SMRAM. The expectation is that the north bridge or memory controller would publish this protocol.

The principal functionality found in the memory controller includes the following:

• Exposing the SMRAM to all non-SMM agents, or the "open" state
• Shrouding the SMRAM to all but the SMM agents, or the "closed" state
• Preserving the system integrity, or "locking" the SMRAM, such that the settings cannot be perturbed by either boot service or runtime agents

Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file SmmAccess2.h.

Macro Definition Documentation

EFI_SMM_ACCESS2_PROTOCOL_GUID

#define EFI_SMM_ACCESS2_PROTOCOL_GUID   EFI_MM_ACCESS_PROTOCOL_GUID

Definition at line 24 of file SmmAccess2.h.

Typedef Documentation

EFI_SMM_ACCESS2_PROTOCOL

typedef EFI_MM_ACCESS_PROTOCOL EFI_SMM_ACCESS2_PROTOCOL

Definition at line 26 of file SmmAccess2.h.

EFI_SMM_CAPABILITIES2

typedef EFI_MM_CAPABILITIES EFI_SMM_CAPABILITIES2

Definition at line 34 of file SmmAccess2.h.

EFI_SMM_CLOSE2

typedef EFI_MM_CLOSE EFI_SMM_CLOSE2

Definition at line 30 of file SmmAccess2.h.

EFI_SMM_LOCK2

typedef EFI_MM_LOCK EFI_SMM_LOCK2

Definition at line 32 of file SmmAccess2.h.

EFI_SMM_OPEN2

typedef EFI_MM_OPEN EFI_SMM_OPEN2

Definition at line 28 of file SmmAccess2.h.