mirror of https://github.com/acidanthera/audk.git
120 lines
4.3 KiB
C
120 lines
4.3 KiB
C
/** @file
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CPU MP Initialize Library common functions.
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Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "MpLib.h"
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/**
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MP Initialize Library initialization.
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This service will allocate AP reset vector and wakeup all APs to do APs
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initialization.
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This service must be invoked before all other MP Initialize Library
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service are invoked.
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@retval EFI_SUCCESS MP initialization succeeds.
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@retval Others MP initialization fails.
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**/
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EFI_STATUS
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EFIAPI
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MpInitLibInitialize (
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VOID
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Gets detailed MP-related information on the requested processor at the
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instant this call is made. This service may only be called from the BSP.
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@param[in] ProcessorNumber The handle number of processor.
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@param[out] ProcessorInfoBuffer A pointer to the buffer where information for
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the requested processor is deposited.
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@param[out] HealthData Return processor health data.
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@retval EFI_SUCCESS Processor information was returned.
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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@retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist in the platform.
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@retval EFI_NOT_READY MP Initialize Library is not initialized.
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**/
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EFI_STATUS
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EFIAPI
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MpInitLibGetProcessorInfo (
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IN UINTN ProcessorNumber,
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OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer,
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OUT EFI_HEALTH_FLAGS *HealthData OPTIONAL
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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This return the handle number for the calling processor. This service may be
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called from the BSP and APs.
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@param[out] ProcessorNumber Pointer to the handle number of AP.
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The range is from 0 to the total number of
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logical processors minus 1. The total number of
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logical processors can be retrieved by
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MpInitLibGetNumberOfProcessors().
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@retval EFI_SUCCESS The current processor handle number was returned
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in ProcessorNumber.
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@retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.
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@retval EFI_NOT_READY MP Initialize Library is not initialized.
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**/
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EFI_STATUS
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EFIAPI
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MpInitLibWhoAmI (
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OUT UINTN *ProcessorNumber
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)
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{
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return EFI_UNSUPPORTED;
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}
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/**
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Retrieves the number of logical processor in the platform and the number of
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those logical processors that are enabled on this boot. This service may only
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be called from the BSP.
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@param[out] NumberOfProcessors Pointer to the total number of logical
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processors in the system, including the BSP
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and disabled APs.
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@param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical
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processors that exist in system, including
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the BSP.
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@retval EFI_SUCCESS The number of logical processors and enabled
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logical processors was retrieved.
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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@retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL and NumberOfEnabledProcessors
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is NULL.
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@retval EFI_NOT_READY MP Initialize Library is not initialized.
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**/
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EFI_STATUS
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EFIAPI
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MpInitLibGetNumberOfProcessors (
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OUT UINTN *NumberOfProcessors, OPTIONAL
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OUT UINTN *NumberOfEnabledProcessors OPTIONAL
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)
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{
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return EFI_UNSUPPORTED;
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}
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