PiSmmCommunicationSmm.c File Reference

#include <PiSmm.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/SmmServicesTableLib.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/SmmMemLib.h>
#include <Protocol/SmmSwDispatch2.h>
#include <Protocol/SmmCommunication.h>
#include <Ppi/SmmCommunication.h>
#include "PiSmmCommunicationPrivate.h"

Go to the source code of this file.

Functions
VOID	SetCommunicationContext (VOID)
EFI_STATUS EFIAPI	PiSmmCommunicationHandler (IN EFI_HANDLE DispatchHandle, IN CONST VOID *Context OPTIONAL, IN OUT VOID *CommBuffer OPTIONAL, IN OUT UINTN *CommBufferSize OPTIONAL)
VOID *	AllocateAcpiNvsMemoryBelow4G (IN UINTN Size)
EFI_STATUS EFIAPI	PiSmmCommunicationSmmEntryPoint (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)

Variables
EFI_SMM_COMMUNICATION_CONTEXT	mSmmCommunicationContext

Detailed Description

PiSmmCommunication SMM Driver.

Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file PiSmmCommunicationSmm.c.

Function Documentation

AllocateAcpiNvsMemoryBelow4G()

VOID * AllocateAcpiNvsMemoryBelow4G

(

IN UINTN

Size

)

Allocate EfiACPIMemoryNVS below 4G memory address.

This function allocates EfiACPIMemoryNVS below 4G memory address.

Parameters

Size	Size of memory to allocate.

Returns

Allocated address for output.

Definition at line 126 of file PiSmmCommunicationSmm.c.

PiSmmCommunicationHandler()

EFI_STATUS EFIAPI PiSmmCommunicationHandler	(	IN EFI_HANDLE	DispatchHandle,
		IN CONST VOID *Context	OPTIONAL,
		IN OUT VOID *CommBuffer	OPTIONAL,
		IN OUT UINTN *CommBufferSize	OPTIONAL
	)

Dispatch function for a Software SMI handler.

Parameters

DispatchHandle	The unique handle assigned to this handler by SmiHandlerRegister().
Context	Points to an optional handler context which was specified when the handler was registered.
CommBuffer	A pointer to a collection of data in memory that will be conveyed from a non-SMM environment into an SMM environment.
CommBufferSize	The size of the CommBuffer.

Return values

EFI_SUCCESS

Command is handled successfully.

Definition at line 62 of file PiSmmCommunicationSmm.c.

PiSmmCommunicationSmmEntryPoint()

EFI_STATUS EFIAPI PiSmmCommunicationSmmEntryPoint	(	IN EFI_HANDLE	ImageHandle,
		IN EFI_SYSTEM_TABLE *	SystemTable
	)

Entry Point for PI SMM communication SMM driver.

Parameters

[in]	ImageHandle	Image handle of this driver.
[in]	SystemTable	A Pointer to the EFI System Table.

Return values

EFI_SUCCESS

Returns

Others Some error occurs.

Definition at line 163 of file PiSmmCommunicationSmm.c.

SetCommunicationContext()

VOID SetCommunicationContext

(

VOID

)

Set SMM communication context.

Definition at line 32 of file PiSmmCommunicationSmm.c.

Variable Documentation

mSmmCommunicationContext

EFI_SMM_COMMUNICATION_CONTEXT mSmmCommunicationContext

Initial value:

= {
  SMM_COMMUNICATION_SIGNATURE
}

Definition at line 24 of file PiSmmCommunicationSmm.c.