Ppin.c File Reference

#include "CpuCommonFeatures.h"

Go to the source code of this file.

Functions
VOID *EFIAPI	PpinGetConfigData (IN UINTN NumberOfProcessors)
BOOLEAN EFIAPI	PpinSupport (IN UINTN ProcessorNumber, IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, IN VOID *ConfigData OPTIONAL)
RETURN_STATUS EFIAPI	PpinInitialize (IN UINTN ProcessorNumber, IN REGISTER_CPU_FEATURE_INFORMATION *CpuInfo, IN VOID *ConfigData OPTIONAL, IN BOOLEAN State)

Detailed Description

Protected Processor Inventory Number(PPIN) feature.

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

Definition in file Ppin.c.

Function Documentation

PpinGetConfigData()

VOID *EFIAPI PpinGetConfigData

(

IN UINTN

NumberOfProcessors

)

Prepares for the data used by CPU feature detection and initialization.

Parameters

[in]

NumberOfProcessors

The number of CPUs in the platform.

Returns

Pointer to a buffer of CPU related configuration data.

Note

This service could be called by BSP only.

Definition at line 22 of file Ppin.c.

PpinInitialize()

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

Initializes Protected Processor Inventory Number 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 Protected Processor Inventory Number feature must be enabled. If FALSE, then the Protected Processor Inventory Number feature must be disabled.

Return values

RETURN_SUCCESS	Protected Processor Inventory Number feature is initialized.
RETURN_DEVICE_ERROR	Device can't change state because it has been locked.

Note

This service could be called by BSP only.

Definition at line 109 of file Ppin.c.

PpinSupport()

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

Detects if Protected Processor Inventory Number 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	Protected Processor Inventory Number feature is supported.
FALSE	Protected Processor Inventory Number feature is not supported.

Note

This service could be called by BSP/APs.

Definition at line 52 of file Ppin.c.