2015-04-28 09:24:16 +02:00
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/** @file
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This file declares UEFI PI Multi-processor PPI.
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This PPI is installed by some platform or chipset-specific PEIM that abstracts
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handling multiprocessor support.
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2017-07-06 03:23:29 +02:00
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Copyright (c) 2015 - 2017, Intel Corporation. All rights reserved.<BR>
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2015-04-28 09:24:16 +02:00
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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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@par Revision Reference:
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This PPI is introduced in PI Version 1.4.
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**/
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#ifndef __PEI_MP_SERVICES_PPI_H__
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#define __PEI_MP_SERVICES_PPI_H__
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#include <Protocol/MpService.h>
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#define EFI_PEI_MP_SERVICES_PPI_GUID \
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{ \
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0xee16160a, 0xe8be, 0x47a6, { 0x82, 0xa, 0xc6, 0x90, 0xd, 0xb0, 0x25, 0xa } \
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}
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typedef struct _EFI_PEI_MP_SERVICES_PPI EFI_PEI_MP_SERVICES_PPI ;
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/**
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Get the number of CPU's.
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@param[in] PeiServices An indirect pointer to the PEI Services Table
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published by the PEI Foundation.
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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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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_MP_SERVICES_GET_NUMBER_OF_PROCESSORS) (
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IN CONST EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_MP_SERVICES_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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Get information on a specific CPU.
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@param[in] PeiServices An indirect pointer to the PEI Services Table
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published by the PEI Foundation.
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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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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_MP_SERVICES_GET_PROCESSOR_INFO) (
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IN CONST EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_MP_SERVICES_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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Activate all of the application proessors.
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@param[in] PeiServices An indirect pointer to the PEI Services Table
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published by the PEI Foundation.
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@param[in] This A pointer to the EFI_PEI_MP_SERVICES_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 EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()
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or EFI_PEI_MP_SERVICES_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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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_MP_SERVICES_STARTUP_ALL_APS) (
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IN CONST EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_MP_SERVICES_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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Activate a specific application processor.
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@param[in] PeiServices An indirect pointer to the PEI Services Table
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published by the PEI Foundation.
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@param[in] This A pointer to the EFI_PEI_MP_SERVICES_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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EFI_PEI_MP_SERVICES_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 EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()
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or EFI_PEI_MP_SERVICES_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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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_MP_SERVICES_STARTUP_THIS_AP) (
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IN CONST EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_MP_SERVICES_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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Switch the boot strap processor.
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@param[in] PeiServices An indirect pointer to the PEI Services Table
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published by the PEI Foundation.
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@param[in] This A pointer to the EFI_PEI_MP_SERVICES_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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EFI_PEI_MP_SERVICES_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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2017-07-06 03:23:29 +02:00
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@retval EFI_DEVICE_ERROR The calling processor is an AP.
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2015-04-28 09:24:16 +02:00
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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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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_MP_SERVICES_SWITCH_BSP) (
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IN CONST EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_MP_SERVICES_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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Enable or disable an application processor.
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@param[in] PeiServices An indirect pointer to the PEI Services Table
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published by the PEI Foundation.
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@param[in] This A pointer to the EFI_PEI_MP_SERVICES_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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EFI_PEI_MP_SERVICES_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 EFI_PEI_MP_SERVICES_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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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_MP_SERVICES_ENABLEDISABLEAP) (
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IN CONST EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_MP_SERVICES_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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Identify the currently executing processor.
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2015-04-28 09:24:16 +02:00
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@param[in] PeiServices An indirect pointer to the PEI Services Table
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published by the PEI Foundation.
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@param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.
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@param[out] 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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EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors().
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@retval EFI_SUCCESS The current processor handle number was returned in
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ProcessorNumber.
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@retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PEI_MP_SERVICES_WHOAMI) (
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IN CONST EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_MP_SERVICES_PPI *This,
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OUT UINTN *ProcessorNumber
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);
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///
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/// This PPI is installed by some platform or chipset-specific PEIM that abstracts
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/// handling multiprocessor support.
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///
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struct _EFI_PEI_MP_SERVICES_PPI {
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EFI_PEI_MP_SERVICES_GET_NUMBER_OF_PROCESSORS GetNumberOfProcessors;
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EFI_PEI_MP_SERVICES_GET_PROCESSOR_INFO GetProcessorInfo;
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EFI_PEI_MP_SERVICES_STARTUP_ALL_APS StartupAllAPs;
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EFI_PEI_MP_SERVICES_STARTUP_THIS_AP StartupThisAP;
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EFI_PEI_MP_SERVICES_SWITCH_BSP SwitchBSP;
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EFI_PEI_MP_SERVICES_ENABLEDISABLEAP EnableDisableAP;
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EFI_PEI_MP_SERVICES_WHOAMI WhoAmI;
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};
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extern EFI_GUID gEfiPeiMpServicesPpiGuid;
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#endif
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