DxeRegisterCpuFeaturesLib.c File Reference

#include <PiDxe.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiLib.h>
#include "RegisterCpuFeatures.h"

Go to the source code of this file.

Functions
CPU_FEATURES_DATA *	GetCpuFeaturesData (VOID)
MP_SERVICES	GetMpService (VOID)
UINTN	GetProcessorIndex (IN CPU_FEATURES_DATA *CpuFeaturesData)
EFI_STATUS	GetProcessorInformation (IN UINTN ProcessorNumber, OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer)
VOID	StartupAllAPsWorker (IN EFI_AP_PROCEDURE Procedure, IN EFI_EVENT MpEvent)
VOID	SwitchNewBsp (IN UINTN ProcessorNumber)
VOID	GetNumberOfProcessor (OUT UINTN *NumberOfCpus, OUT UINTN *NumberOfEnabledProcessors)
VOID EFIAPI	CpuFeaturesInitialize (VOID)

Variables
CPU_FEATURES_DATA	mCpuFeaturesData = { 0 }

Detailed Description

CPU Register Table Library functions.

Copyright (c) 2017 - 2024, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file DxeRegisterCpuFeaturesLib.c.

Function Documentation

CpuFeaturesInitialize()

VOID EFIAPI CpuFeaturesInitialize

(

VOID

)

Performs CPU features Initialization.

This service will invoke MP service to perform CPU features initialization on BSP/APs per user configuration.

Note

This service could be called by BSP only.

Definition at line 218 of file DxeRegisterCpuFeaturesLib.c.

GetCpuFeaturesData()

CPU_FEATURES_DATA * GetCpuFeaturesData

(

VOID

)

Worker function to get CPU_FEATURES_DATA pointer.

Returns

Pointer to CPU_FEATURES_DATA.

Definition at line 24 of file DxeRegisterCpuFeaturesLib.c.

GetMpService()

MP_SERVICES GetMpService

(

VOID

)

Worker function to get EFI_MP_SERVICES_PROTOCOL pointer.

Returns

MP_SERVICES variable.

Definition at line 37 of file DxeRegisterCpuFeaturesLib.c.

GetNumberOfProcessor()

VOID GetNumberOfProcessor	(	OUT UINTN *	NumberOfCpus,
		OUT UINTN *	NumberOfEnabledProcessors
	)

Worker function to retrieve the number of logical processor in the platform.

Parameters

[out]	NumberOfCpus	Pointer to the total number of logical processors in the system, including the BSP and disabled APs.
[out]	NumberOfEnabledProcessors	Pointer to the number of enabled logical processors that exist in system, including the BSP.

Definition at line 185 of file DxeRegisterCpuFeaturesLib.c.

GetProcessorIndex()

UINTN GetProcessorIndex

(

IN CPU_FEATURES_DATA *

CpuFeaturesData

)

Worker function to return processor index.

Parameters

CpuFeaturesData

Cpu Feature Data structure.

Returns

The processor index.

Definition at line 65 of file DxeRegisterCpuFeaturesLib.c.

GetProcessorInformation()

EFI_STATUS GetProcessorInformation	(	IN UINTN	ProcessorNumber,
		OUT EFI_PROCESSOR_INFORMATION *	ProcessorInfoBuffer
	)

Gets detailed MP-related information on the requested processor at the instant this call is made.

Parameters

[in]	ProcessorNumber	The handle number of processor.
[out]	ProcessorInfoBuffer	A pointer to the buffer where information for the requested processor is deposited.

Returns

Status of MpServices->GetProcessorInfo().

Definition at line 90 of file DxeRegisterCpuFeaturesLib.c.

StartupAllAPsWorker()

VOID StartupAllAPsWorker	(	IN EFI_AP_PROCEDURE	Procedure,
		IN EFI_EVENT	MpEvent
	)

Worker function to execute a caller provided function on all enabled APs.

Parameters

[in]	Procedure	A pointer to the function to be run on enabled APs of the system.
[in]	MpEvent	A pointer to the event to be used later to check whether procedure has done.

Definition at line 119 of file DxeRegisterCpuFeaturesLib.c.

SwitchNewBsp()

VOID SwitchNewBsp

(

IN UINTN

ProcessorNumber

)

Worker function to switch the requested AP to be the BSP from that point onward.

Parameters

[in]

ProcessorNumber

The handle number of AP that is to become the new BSP.

Definition at line 152 of file DxeRegisterCpuFeaturesLib.c.

Variable Documentation

mCpuFeaturesData

CPU_FEATURES_DATA mCpuFeaturesData = { 0 }

Definition at line 16 of file DxeRegisterCpuFeaturesLib.c.