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418 lines
20 KiB
C
418 lines
20 KiB
C
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/** @file
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EDKII_PEI_MP_SERVICES2_PPI Implementation code.
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Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "CpuMpPei.h"
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/**
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This service retrieves the number of logical processor in the platform
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and the number of those logical processors that are enabled on this boot.
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This service may only be called from the BSP.
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This function is used to retrieve the following information:
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- The number of logical processors that are present in the system.
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- The number of enabled logical processors in the system at the instant
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this call is made.
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Because MP Service Ppi provides services to enable and disable processors
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dynamically, the number of enabled logical processors may vary during the
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course of a boot session.
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If this service is called from an AP, then EFI_DEVICE_ERROR is returned.
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If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then
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EFI_INVALID_PARAMETER is returned. Otherwise, the total number of processors
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is returned in NumberOfProcessors, the number of currently enabled processor
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is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned.
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@param[in] This Pointer to this instance of the PPI.
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@param[out] NumberOfProcessors Pointer to the total number of logical processors in
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the system, including the BSP and disabled APs.
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@param[out] NumberOfEnabledProcessors
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Number of processors in the system that are enabled.
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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.
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NumberOfEnabledProcessors is NULL.
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**/
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EFI_STATUS
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EFIAPI
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EdkiiPeiGetNumberOfProcessors (
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IN EDKII_PEI_MP_SERVICES2_PPI *This,
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OUT UINTN *NumberOfProcessors,
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OUT UINTN *NumberOfEnabledProcessors
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)
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{
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if ((NumberOfProcessors == NULL) || (NumberOfEnabledProcessors == NULL)) {
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return EFI_INVALID_PARAMETER;
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}
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return MpInitLibGetNumberOfProcessors (
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NumberOfProcessors,
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NumberOfEnabledProcessors
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);
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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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This service retrieves detailed MP-related information about any processor
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on the platform. Note the following:
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- The processor information may change during the course of a boot session.
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- The information presented here is entirely MP related.
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Information regarding the number of caches and their sizes, frequency of operation,
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slot numbers is all considered platform-related information and is not provided
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by this service.
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@param[in] This Pointer to this instance of the PPI.
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@param[in] ProcessorNumber Pointer to the total number of logical processors in
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the system, including the BSP and disabled APs.
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@param[out] ProcessorInfoBuffer Number of processors in the system that are enabled.
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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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**/
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EFI_STATUS
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EFIAPI
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EdkiiPeiGetProcessorInfo (
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IN EDKII_PEI_MP_SERVICES2_PPI *This,
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IN UINTN ProcessorNumber,
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OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
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)
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{
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return MpInitLibGetProcessorInfo (ProcessorNumber, ProcessorInfoBuffer, NULL);
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}
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/**
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This service executes a caller provided function on all enabled APs. APs can
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run either simultaneously or one at a time in sequence. This service supports
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both blocking requests only. This service may only
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be called from the BSP.
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This function is used to dispatch all the enabled APs to the function specified
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by Procedure. If any enabled AP is busy, then EFI_NOT_READY is returned
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immediately and Procedure is not started on any AP.
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If SingleThread is TRUE, all the enabled APs execute the function specified by
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Procedure one by one, in ascending order of processor handle number. Otherwise,
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all the enabled APs execute the function specified by Procedure simultaneously.
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If the timeout specified by TimeoutInMicroSeconds expires before all APs return
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from Procedure, then Procedure on the failed APs is terminated. All enabled APs
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are always available for further calls to EDKII_PEI_MP_SERVICES2_PPI.StartupAllAPs()
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and EDKII_PEI_MP_SERVICES2_PPI.StartupThisAP(). If FailedCpuList is not NULL, its
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content points to the list of processor handle numbers in which Procedure was
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terminated.
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Note: It is the responsibility of the consumer of the EDKII_PEI_MP_SERVICES2_PPI.StartupAllAPs()
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to make sure that the nature of the code that is executed on the BSP and the
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dispatched APs is well controlled. The MP Services Ppi does not guarantee
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that the Procedure function is MP-safe. Hence, the tasks that can be run in
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parallel are limited to certain independent tasks and well-controlled exclusive
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code. PEI services and Ppis may not be called by APs unless otherwise
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specified.
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In blocking execution mode, BSP waits until all APs finish or
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TimeoutInMicroSeconds expires.
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@param[in] This A pointer to the EDKII_PEI_MP_SERVICES2_PPI instance.
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@param[in] Procedure A pointer to the function to be run on enabled APs of
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the system.
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@param[in] SingleThread If TRUE, then all the enabled APs execute the function
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specified by Procedure one by one, in ascending order
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of processor handle number. If FALSE, then all the
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enabled APs execute the function specified by Procedure
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simultaneously.
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@param[in] TimeoutInMicroSeconds
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Indicates the time limit in microseconds for APs to
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return from Procedure, for blocking mode only. Zero
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means infinity. If the timeout expires before all APs
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return from Procedure, then Procedure on the failed APs
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is terminated. All enabled APs are available for next
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function assigned by EDKII_PEI_MP_SERVICES2_PPI.StartupAllAPs()
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or EDKII_PEI_MP_SERVICES2_PPI.StartupThisAP(). If the
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timeout expires in blocking mode, BSP returns
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EFI_TIMEOUT.
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@param[in] ProcedureArgument The parameter passed into Procedure for all APs.
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@retval EFI_SUCCESS In blocking mode, all APs have finished before the
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timeout expired.
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@retval EFI_DEVICE_ERROR Caller processor is AP.
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@retval EFI_NOT_STARTED No enabled APs exist in the system.
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@retval EFI_NOT_READY Any enabled APs are busy.
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@retval EFI_TIMEOUT In blocking mode, the timeout expired before all
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enabled APs have finished.
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@retval EFI_INVALID_PARAMETER Procedure is NULL.
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**/
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EFI_STATUS
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EFIAPI
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EdkiiPeiStartupAllAPs (
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IN EDKII_PEI_MP_SERVICES2_PPI *This,
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IN EFI_AP_PROCEDURE Procedure,
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IN BOOLEAN SingleThread,
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IN UINTN TimeoutInMicroSeconds,
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IN VOID *ProcedureArgument OPTIONAL
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)
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{
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return MpInitLibStartupAllAPs (
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Procedure,
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SingleThread,
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NULL,
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TimeoutInMicroSeconds,
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ProcedureArgument,
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NULL
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);
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}
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/**
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This service lets the caller get one enabled AP to execute a caller-provided
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function. The caller can request the BSP to wait for the completion
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of the AP. This service may only be called from the BSP.
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This function is used to dispatch one enabled AP to the function specified by
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Procedure passing in the argument specified by ProcedureArgument.
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The execution is in blocking mode. The BSP waits until the AP finishes or
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TimeoutInMicroSecondss expires.
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If the timeout specified by TimeoutInMicroseconds expires before the AP returns
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from Procedure, then execution of Procedure by the AP is terminated. The AP is
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available for subsequent calls to EDKII_PEI_MP_SERVICES2_PPI.StartupAllAPs() and
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EDKII_PEI_MP_SERVICES2_PPI.StartupThisAP().
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@param[in] This A pointer to the EDKII_PEI_MP_SERVICES2_PPI instance.
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@param[in] Procedure A pointer to the function to be run on enabled APs of
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the system.
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@param[in] ProcessorNumber The handle number of the AP. The range is from 0 to the
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total number of logical processors minus 1. The total
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number of logical processors can be retrieved by
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EDKII_PEI_MP_SERVICES2_PPI.GetNumberOfProcessors().
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@param[in] TimeoutInMicroseconds
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Indicates the time limit in microseconds for APs to
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return from Procedure, for blocking mode only. Zero
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means infinity. If the timeout expires before all APs
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return from Procedure, then Procedure on the failed APs
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is terminated. All enabled APs are available for next
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function assigned by EDKII_PEI_MP_SERVICES2_PPI.StartupAllAPs()
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or EDKII_PEI_MP_SERVICES2_PPI.StartupThisAP(). If the
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timeout expires in blocking mode, BSP returns
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EFI_TIMEOUT.
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@param[in] ProcedureArgument The parameter passed into Procedure for all APs.
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@retval EFI_SUCCESS In blocking mode, specified AP finished before the
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timeout expires.
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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@retval EFI_TIMEOUT In blocking mode, the timeout expired before the
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specified AP has finished.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.
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@retval EFI_INVALID_PARAMETER Procedure is NULL.
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**/
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EFI_STATUS
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EFIAPI
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EdkiiPeiStartupThisAP (
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IN EDKII_PEI_MP_SERVICES2_PPI *This,
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IN EFI_AP_PROCEDURE Procedure,
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IN UINTN ProcessorNumber,
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IN UINTN TimeoutInMicroseconds,
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IN VOID *ProcedureArgument OPTIONAL
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)
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{
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return MpInitLibStartupThisAP (
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Procedure,
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ProcessorNumber,
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NULL,
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TimeoutInMicroseconds,
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ProcedureArgument,
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NULL
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);
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}
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/**
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This service switches the requested AP to be the BSP from that point onward.
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This service changes the BSP for all purposes. This call can only be performed
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by the current BSP.
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This service switches the requested AP to be the BSP from that point onward.
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This service changes the BSP for all purposes. The new BSP can take over the
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execution of the old BSP and continue seamlessly from where the old one left
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off.
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If the BSP cannot be switched prior to the return from this service, then
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EFI_UNSUPPORTED must be returned.
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@param[in] This A pointer to the EDKII_PEI_MP_SERVICES2_PPI instance.
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@param[in] ProcessorNumber The handle number of the AP. The range is from 0 to the
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total number of logical processors minus 1. The total
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number of logical processors can be retrieved by
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EDKII_PEI_MP_SERVICES2_PPI.GetNumberOfProcessors().
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@param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an enabled
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AP. Otherwise, it will be disabled.
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@retval EFI_SUCCESS BSP successfully switched.
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@retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to this
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service returning.
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@retval EFI_UNSUPPORTED Switching the BSP is not supported.
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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@retval EFI_NOT_FOUND The processor with the handle specified by
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ProcessorNumber does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or a disabled
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AP.
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@retval EFI_NOT_READY The specified AP is busy.
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**/
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EFI_STATUS
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EFIAPI
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EdkiiPeiSwitchBSP (
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IN EDKII_PEI_MP_SERVICES2_PPI *This,
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IN UINTN ProcessorNumber,
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IN BOOLEAN EnableOldBSP
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)
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{
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return MpInitLibSwitchBSP (ProcessorNumber, EnableOldBSP);
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}
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/**
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This service lets the caller enable or disable an AP from this point onward.
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This service may only be called from the BSP.
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This service allows the caller enable or disable an AP from this point onward.
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The caller can optionally specify the health status of the AP by Health. If
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an AP is being disabled, then the state of the disabled AP is implementation
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dependent. If an AP is enabled, then the implementation must guarantee that a
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complete initialization sequence is performed on the AP, so the AP is in a state
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that is compatible with an MP operating system.
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If the enable or disable AP operation cannot be completed prior to the return
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from this service, then EFI_UNSUPPORTED must be returned.
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@param[in] This A pointer to the EDKII_PEI_MP_SERVICES2_PPI instance.
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@param[in] ProcessorNumber The handle number of the AP. The range is from 0 to the
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total number of logical processors minus 1. The total
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number of logical processors can be retrieved by
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EDKII_PEI_MP_SERVICES2_PPI.GetNumberOfProcessors().
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@param[in] EnableAP Specifies the new state for the processor for enabled,
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FALSE for disabled.
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@param[in] HealthFlag If not NULL, a pointer to a value that specifies the
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new health status of the AP. This flag corresponds to
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StatusFlag defined in EDKII_PEI_MP_SERVICES2_PPI.GetProcessorInfo().
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Only the PROCESSOR_HEALTH_STATUS_BIT is used. All other
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bits are ignored. If it is NULL, this parameter is
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ignored.
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@retval EFI_SUCCESS The specified AP was enabled or disabled successfully.
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@retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed prior
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to this service returning.
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@retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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@retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber
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does not exist.
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@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.
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**/
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EFI_STATUS
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EFIAPI
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EdkiiPeiEnableDisableAP (
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IN EDKII_PEI_MP_SERVICES2_PPI *This,
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IN UINTN ProcessorNumber,
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IN BOOLEAN EnableAP,
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IN UINT32 *HealthFlag OPTIONAL
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)
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{
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return MpInitLibEnableDisableAP (ProcessorNumber, EnableAP, HealthFlag);
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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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This service returns the processor handle number for the calling processor.
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The returned value is in the range from 0 to the total number of logical
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processors minus 1. The total number of logical processors can be retrieved
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with EDKII_PEI_MP_SERVICES2_PPI.GetNumberOfProcessors(). This service may be
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called from the BSP and APs. If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER
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is returned. Otherwise, the current processors handle number is returned in
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ProcessorNumber, and EFI_SUCCESS is returned.
|
||
|
|
|
||
|
|
@param[in] This A pointer to the EDKII_PEI_MP_SERVICES2_PPI instance.
|
||
|
|
@param[out] ProcessorNumber The handle number of the AP. The range is from 0 to the
|
||
|
|
total number of logical processors minus 1. The total
|
||
|
|
number of logical processors can be retrieved by
|
||
|
|
EDKII_PEI_MP_SERVICES2_PPI.GetNumberOfProcessors().
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS The current processor handle number was returned in
|
||
|
|
ProcessorNumber.
|
||
|
|
@retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
EdkiiPeiWhoAmI (
|
||
|
|
IN EDKII_PEI_MP_SERVICES2_PPI *This,
|
||
|
|
OUT UINTN *ProcessorNumber
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return MpInitLibWhoAmI (ProcessorNumber);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
This service executes a caller provided function on all enabled CPUs. CPUs can
|
||
|
|
run either simultaneously or one at a time in sequence. This service may only
|
||
|
|
be called from the BSP.
|
||
|
|
|
||
|
|
@param[in] This A pointer to the EDKII_PEI_MP_SERVICES2_PPI instance.
|
||
|
|
@param[in] Procedure A pointer to the function to be run on enabled APs of
|
||
|
|
the system.
|
||
|
|
@param[in] TimeoutInMicroSeconds
|
||
|
|
Indicates the time limit in microseconds for APs to
|
||
|
|
return from Procedure, for blocking mode only. Zero
|
||
|
|
means infinity. If the timeout expires in blocking
|
||
|
|
mode, BSP returns EFI_TIMEOUT.
|
||
|
|
@param[in] ProcedureArgument The parameter passed into Procedure for all CPUs.
|
||
|
|
|
||
|
|
@retval EFI_SUCCESS In blocking mode, all APs have finished before the
|
||
|
|
timeout expired.
|
||
|
|
@retval EFI_DEVICE_ERROR Caller processor is AP.
|
||
|
|
@retval EFI_NOT_READY Any enabled APs are busy.
|
||
|
|
@retval EFI_TIMEOUT In blocking mode, the timeout expired before all
|
||
|
|
enabled APs have finished.
|
||
|
|
@retval EFI_INVALID_PARAMETER Procedure is NULL.
|
||
|
|
**/
|
||
|
|
EFI_STATUS
|
||
|
|
EFIAPI
|
||
|
|
EdkiiPeiStartupAllCPUs (
|
||
|
|
IN EDKII_PEI_MP_SERVICES2_PPI *This,
|
||
|
|
IN EFI_AP_PROCEDURE Procedure,
|
||
|
|
IN UINTN TimeoutInMicroSeconds,
|
||
|
|
IN VOID *ProcedureArgument OPTIONAL
|
||
|
|
)
|
||
|
|
{
|
||
|
|
return MpInitLibStartupAllCPUs (
|
||
|
|
Procedure,
|
||
|
|
TimeoutInMicroSeconds,
|
||
|
|
ProcedureArgument
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// CPU MP2 PPI to be installed
|
||
|
|
//
|
||
|
|
EDKII_PEI_MP_SERVICES2_PPI mMpServices2Ppi = {
|
||
|
|
EdkiiPeiGetNumberOfProcessors,
|
||
|
|
EdkiiPeiGetProcessorInfo,
|
||
|
|
EdkiiPeiStartupAllAPs,
|
||
|
|
EdkiiPeiStartupThisAP,
|
||
|
|
EdkiiPeiSwitchBSP,
|
||
|
|
EdkiiPeiEnableDisableAP,
|
||
|
|
EdkiiPeiWhoAmI,
|
||
|
|
EdkiiPeiStartupAllCPUs
|
||
|
|
};
|
||
|
|
|