LimitCpuIdMaxval.c File Reference

#include "CpuCommonFeatures.h"

Go to the source code of this file.

Functions
BOOLEAN EFIAPI	LimitCpuidMaxvalSupport (IN UINTN ProcessorNumber, IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, IN VOID *ConfigData OPTIONAL)
RETURN_STATUS EFIAPI	LimitCpuidMaxvalInitialize (IN UINTN ProcessorNumber, IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, IN VOID *ConfigData OPTIONAL, IN BOOLEAN State)

Detailed Description

LimitCpuidMaxval Feature.

Copyright (c) 2017 - 2018, Intel Corporation. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent

Definition in file LimitCpuIdMaxval.c.

Function Documentation

LimitCpuidMaxvalInitialize()

RETURN_STATUS EFIAPI LimitCpuidMaxvalInitialize	(	IN UINTN	ProcessorNumber,
		IN REGISTER_CPU_FEATURE_INFORMATION *	CpuInfo,
		IN VOID *ConfigData	OPTIONAL,
		IN BOOLEAN	State
	)

Initializes LimitCpuidMaxval feature to specific state.

Parameters

[in]	ProcessorNumber	The index of the CPU executing this function.
[in]	CpuInfo	A pointer to the REGISTER_CPU_FEATURE_INFORMATION structure for the CPU executing this function.
[in]	ConfigData	A pointer to the configuration buffer returned by CPU_FEATURE_GET_CONFIG_DATA. NULL if CPU_FEATURE_GET_CONFIG_DATA was not provided in RegisterCpuFeature().
[in]	State	If TRUE, then the LimitCpuidMaxval feature must be enabled. If FALSE, then the LimitCpuidMaxval feature must be disabled.

Return values

RETURN_SUCCESS

LimitCpuidMaxval feature is initialized.

Note

This service could be called by BSP only.

Definition at line 60 of file LimitCpuIdMaxval.c.

LimitCpuidMaxvalSupport()

BOOLEAN EFIAPI LimitCpuidMaxvalSupport	(	IN UINTN	ProcessorNumber,
		IN REGISTER_CPU_FEATURE_INFORMATION *	CpuInfo,
		IN VOID *ConfigData	OPTIONAL
	)

Detects if LimitCpuidMaxval feature supported on current processor.

Parameters

[in]	ProcessorNumber	The index of the CPU executing this function.
[in]	CpuInfo	A pointer to the REGISTER_CPU_FEATURE_INFORMATION structure for the CPU executing this function.
[in]	ConfigData	A pointer to the configuration buffer returned by CPU_FEATURE_GET_CONFIG_DATA. NULL if CPU_FEATURE_GET_CONFIG_DATA was not provided in RegisterCpuFeature().

Return values

TRUE	LimitCpuidMaxval feature is supported.
FALSE	LimitCpuidMaxval feature is not supported.

Note

This service could be called by BSP/APs.

Definition at line 29 of file LimitCpuIdMaxval.c.