PiSmmCpuDxeSmm.c File Reference

#include "PiSmmCpuCommon.h"
#include <Library/UefiBootServicesTableLib.h>

Go to the source code of this file.

Functions
BOOLEAN	IsSmmProfileEnabled (VOID)
VOID	PerformRemainingTasks (VOID)
VOID	GetSmiCommandPort (VOID)
EFI_STATUS EFIAPI	SmmReadyToLockEventNotify (IN CONST EFI_GUID *Protocol, IN VOID *Interface, IN EFI_HANDLE Handle)
VOID	GetSmmCpuSyncConfigData (IN OUT BOOLEAN *RelaxedMode, OPTIONAL IN OUT UINT64 *SyncTimeout, OPTIONAL IN OUT UINT64 *SyncTimeout2 OPTIONAL)
VOID	GetAcpiS3EnableFlag (VOID)
UINTN	GetSupportedMaxLogicalProcessorNumber (VOID)
EFI_PROCESSOR_INFORMATION *	GetMpInformationFromMpServices (OUT UINTN *NumberOfCpus, OUT UINTN *MaxNumberOfCpus)
EFI_STATUS EFIAPI	PiCpuSmmEntry (IN EFI_HANDLE ImageHandle, IN EFI_SYSTEM_TABLE *SystemTable)

Variables
const BOOLEAN	mIsStandaloneMm = FALSE
BOOLEAN	mSmmReadyToLock = FALSE

Detailed Description

Agent Module to load other modules to deploy SMM Entry Vector for X86 CPU.

Copyright (c) 2009 - 2024, Intel Corporation. All rights reserved.
Copyright (c) 2017, AMD Incorporated. All rights reserved.
Copyright (C) 2023 - 2024 Advanced Micro Devices, Inc. All rights reserved.

SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file PiSmmCpuDxeSmm.c.

Function Documentation

GetAcpiS3EnableFlag()

VOID GetAcpiS3EnableFlag

(

VOID

)

Get ACPI S3 enable flag.

Definition at line 230 of file PiSmmCpuDxeSmm.c.

GetMpInformationFromMpServices()

EFI_PROCESSOR_INFORMATION * GetMpInformationFromMpServices	(	OUT UINTN *	NumberOfCpus,
		OUT UINTN *	MaxNumberOfCpus
	)

Extract NumberOfCpus, MaxNumberOfCpus and EFI_PROCESSOR_INFORMATION for all CPU from gEfiMpServiceProtocolGuid.

Parameters

[out]	NumberOfCpus	Pointer to NumberOfCpus.
[out]	MaxNumberOfCpus	Pointer to MaxNumberOfCpus.

Return values

ProcessorInfo

Pointer to EFI_PROCESSOR_INFORMATION buffer.

Get the MP Services Protocol

Get the number of processors

Allocate buffer for processor information

Get processor information

Definition at line 260 of file PiSmmCpuDxeSmm.c.

GetSmiCommandPort()

VOID GetSmiCommandPort

(

VOID

)

To get system port address of the SMI Command Port in FADT table.

Definition at line 130 of file PiSmmCpuDxeSmm.c.

GetSmmCpuSyncConfigData()

VOID GetSmmCpuSyncConfigData	(	IN OUT BOOLEAN *	RelaxedMode,
		OPTIONAL IN OUT UINT64 *	SyncTimeout,
		OPTIONAL IN OUT UINT64 *SyncTimeout2	OPTIONAL
	)

Get SmmCpuSyncConfig data: RelaxedMode, SyncTimeout, SyncTimeout2.

Parameters

[in,out]	RelaxedMode	It indicates if Relaxed CPU synchronization method or traditional CPU synchronization method is used when processing an SMI.
[in,out]	SyncTimeout	It indicates the 1st BSP/AP synchronization timeout value in SMM.
[in,out]	SyncTimeout2	It indicates the 2nd BSP/AP synchronization timeout value in SMM.

Definition at line 206 of file PiSmmCpuDxeSmm.c.

GetSupportedMaxLogicalProcessorNumber()

UINTN GetSupportedMaxLogicalProcessorNumber

(

VOID

)

Get the maximum number of logical processors supported by the system.

Return values

The	maximum number of logical processors supported by the system is indicated by the return value.

Definition at line 244 of file PiSmmCpuDxeSmm.c.

IsSmmProfileEnabled()

BOOLEAN IsSmmProfileEnabled

(

VOID

)

Check SmmProfile is enabled or not.

Returns

TRUE SmmProfile is enabled. FALSE SmmProfile is not enabled.

Definition at line 34 of file PiSmmCpuDxeSmm.c.

PerformRemainingTasks()

VOID PerformRemainingTasks

(

VOID

)

Perform the remaining tasks.

Definition at line 46 of file PiSmmCpuDxeSmm.c.

PiCpuSmmEntry()

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

The module Entry Point of the CPU SMM driver.

Parameters

ImageHandle	The firmware allocated handle for the EFI image.
SystemTable	A pointer to the EFI System Table.

Return values

EFI_SUCCESS	The entry point is executed successfully.
Other	Some error occurs when executing this entry point.

Definition at line 342 of file PiSmmCpuDxeSmm.c.

SmmReadyToLockEventNotify()

EFI_STATUS EFIAPI SmmReadyToLockEventNotify	(	IN CONST EFI_GUID *	Protocol,
		IN VOID *	Interface,
		IN EFI_HANDLE	Handle
	)

SMM Ready To Lock event notification handler.

mSmmReadyToLock is set to perform additional lock actions that must be performed from SMM on the next SMI.

Parameters

[in]	Protocol	Points to the protocol's unique identifier.
[in]	Interface	Points to the interface instance.
[in]	Handle	The handle on which the interface was installed.

Return values

EFI_SUCCESS

Notification handler runs successfully.

Definition at line 163 of file PiSmmCpuDxeSmm.c.

Variable Documentation

mIsStandaloneMm

const BOOLEAN mIsStandaloneMm = FALSE

Definition at line 19 of file PiSmmCpuDxeSmm.c.

mSmmReadyToLock

BOOLEAN mSmmReadyToLock = FALSE

Definition at line 24 of file PiSmmCpuDxeSmm.c.