| 1 | /** @file
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| 2 | Definitions to install Multiple Processor PPI.
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| 3 |
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| 4 | Copyright (c) 2015 - 2021, Intel Corporation. All rights reserved.<BR>
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| 5 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 6 |
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| 7 | **/
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| 8 |
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| 9 | #ifndef _CPU_MP_PEI_H_
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| 10 | #define _CPU_MP_PEI_H_
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| 11 |
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| 12 | #include <PiPei.h>
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| 13 |
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| 14 | #include <Ppi/MpServices.h>
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| 15 | #include <Ppi/SecPlatformInformation.h>
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| 16 | #include <Ppi/SecPlatformInformation2.h>
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| 17 | #include <Ppi/EndOfPeiPhase.h>
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| 18 | #include <Ppi/MpServices2.h>
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| 19 |
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| 20 | #include <Library/BaseLib.h>
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| 21 | #include <Library/DebugLib.h>
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| 22 | #include <Library/HobLib.h>
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| 23 | #include <Library/LocalApicLib.h>
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| 24 | #include <Library/PeimEntryPoint.h>
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| 25 | #include <Library/PeiServicesLib.h>
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| 26 | #include <Library/ReportStatusCodeLib.h>
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| 27 | #include <Library/CpuExceptionHandlerLib.h>
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| 28 | #include <Library/MpInitLib.h>
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| 29 | #include <Library/BaseMemoryLib.h>
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| 30 | #include <Library/MemoryAllocationLib.h>
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| 31 |
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| 32 | extern EFI_PEI_PPI_DESCRIPTOR mPeiCpuMpPpiDesc;
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| 33 |
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| 34 | /**
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| 35 | This service retrieves the number of logical processor in the platform
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| 36 | and the number of those logical processors that are enabled on this boot.
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| 37 | This service may only be called from the BSP.
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| 38 |
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| 39 | This function is used to retrieve the following information:
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| 40 | - The number of logical processors that are present in the system.
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| 41 | - The number of enabled logical processors in the system at the instant
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| 42 | this call is made.
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| 43 |
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| 44 | Because MP Service Ppi provides services to enable and disable processors
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| 45 | dynamically, the number of enabled logical processors may vary during the
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| 46 | course of a boot session.
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| 47 |
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| 48 | If this service is called from an AP, then EFI_DEVICE_ERROR is returned.
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| 49 | If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then
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| 50 | EFI_INVALID_PARAMETER is returned. Otherwise, the total number of processors
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| 51 | is returned in NumberOfProcessors, the number of currently enabled processor
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| 52 | is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned.
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| 53 |
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| 54 | @param[in] PeiServices An indirect pointer to the PEI Services Table
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| 55 | published by the PEI Foundation.
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| 56 | @param[in] This Pointer to this instance of the PPI.
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| 57 | @param[out] NumberOfProcessors Pointer to the total number of logical processors in
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| 58 | the system, including the BSP and disabled APs.
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| 59 | @param[out] NumberOfEnabledProcessors
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| 60 | Number of processors in the system that are enabled.
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| 61 |
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| 62 | @retval EFI_SUCCESS The number of logical processors and enabled
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| 63 | logical processors was retrieved.
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| 64 | @retval EFI_DEVICE_ERROR The calling processor is an AP.
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| 65 | @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL.
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| 66 | NumberOfEnabledProcessors is NULL.
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| 67 | **/
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| 68 | EFI_STATUS
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| 69 | EFIAPI
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| 70 | PeiGetNumberOfProcessors (
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| 71 | IN CONST EFI_PEI_SERVICES **PeiServices,
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| 72 | IN EFI_PEI_MP_SERVICES_PPI *This,
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| 73 | OUT UINTN *NumberOfProcessors,
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| 74 | OUT UINTN *NumberOfEnabledProcessors
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| 75 | );
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| 76 |
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| 77 | /**
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| 78 | Gets detailed MP-related information on the requested processor at the
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| 79 | instant this call is made. This service may only be called from the BSP.
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| 80 |
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| 81 | This service retrieves detailed MP-related information about any processor
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| 82 | on the platform. Note the following:
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| 83 | - The processor information may change during the course of a boot session.
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| 84 | - The information presented here is entirely MP related.
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| 85 |
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| 86 | Information regarding the number of caches and their sizes, frequency of operation,
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| 87 | slot numbers is all considered platform-related information and is not provided
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| 88 | by this service.
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| 89 |
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| 90 | @param[in] PeiServices An indirect pointer to the PEI Services Table
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| 91 | published by the PEI Foundation.
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| 92 | @param[in] This Pointer to this instance of the PPI.
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| 93 | @param[in] ProcessorNumber Pointer to the total number of logical processors in
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| 94 | the system, including the BSP and disabled APs.
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| 95 | @param[out] ProcessorInfoBuffer Number of processors in the system that are enabled.
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| 96 |
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| 97 | @retval EFI_SUCCESS Processor information was returned.
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| 98 | @retval EFI_DEVICE_ERROR The calling processor is an AP.
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| 99 | @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.
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| 100 | @retval EFI_NOT_FOUND The processor with the handle specified by
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| 101 | ProcessorNumber does not exist in the platform.
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| 102 | **/
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| 103 | EFI_STATUS
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| 104 | EFIAPI
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| 105 | PeiGetProcessorInfo (
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| 106 | IN CONST EFI_PEI_SERVICES **PeiServices,
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| 107 | IN EFI_PEI_MP_SERVICES_PPI *This,
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| 108 | IN UINTN ProcessorNumber,
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| 109 | OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
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| 110 | );
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| 111 |
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| 112 | /**
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| 113 | This service executes a caller provided function on all enabled APs. APs can
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| 114 | run either simultaneously or one at a time in sequence. This service supports
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| 115 | both blocking requests only. This service may only
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| 116 | be called from the BSP.
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| 117 |
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| 118 | This function is used to dispatch all the enabled APs to the function specified
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| 119 | by Procedure. If any enabled AP is busy, then EFI_NOT_READY is returned
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| 120 | immediately and Procedure is not started on any AP.
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| 121 |
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| 122 | If SingleThread is TRUE, all the enabled APs execute the function specified by
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| 123 | Procedure one by one, in ascending order of processor handle number. Otherwise,
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| 124 | all the enabled APs execute the function specified by Procedure simultaneously.
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| 125 |
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| 126 | If the timeout specified by TimeoutInMicroSeconds expires before all APs return
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| 127 | from Procedure, then Procedure on the failed APs is terminated. All enabled APs
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| 128 | are always available for further calls to EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()
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| 129 | and EFI_PEI_MP_SERVICES_PPI.StartupThisAP(). If FailedCpuList is not NULL, its
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| 130 | content points to the list of processor handle numbers in which Procedure was
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| 131 | terminated.
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| 132 |
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| 133 | Note: It is the responsibility of the consumer of the EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()
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| 134 | to make sure that the nature of the code that is executed on the BSP and the
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| 135 | dispatched APs is well controlled. The MP Services Ppi does not guarantee
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| 136 | that the Procedure function is MP-safe. Hence, the tasks that can be run in
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| 137 | parallel are limited to certain independent tasks and well-controlled exclusive
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| 138 | code. PEI services and Ppis may not be called by APs unless otherwise
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| 139 | specified.
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| 140 |
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| 141 | In blocking execution mode, BSP waits until all APs finish or
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| 142 | TimeoutInMicroSeconds expires.
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| 143 |
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| 144 | @param[in] PeiServices An indirect pointer to the PEI Services Table
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| 145 | published by the PEI Foundation.
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| 146 | @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.
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| 147 | @param[in] Procedure A pointer to the function to be run on enabled APs of
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| 148 | the system.
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| 149 | @param[in] SingleThread If TRUE, then all the enabled APs execute the function
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| 150 | specified by Procedure one by one, in ascending order
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| 151 | of processor handle number. If FALSE, then all the
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| 152 | enabled APs execute the function specified by Procedure
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| 153 | simultaneously.
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| 154 | @param[in] TimeoutInMicroSeconds
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| 155 | Indicates the time limit in microseconds for APs to
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| 156 | return from Procedure, for blocking mode only. Zero
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| 157 | means infinity. If the timeout expires before all APs
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| 158 | return from Procedure, then Procedure on the failed APs
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| 159 | is terminated. All enabled APs are available for next
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| 160 | function assigned by EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()
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| 161 | or EFI_PEI_MP_SERVICES_PPI.StartupThisAP(). If the
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| 162 | timeout expires in blocking mode, BSP returns
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| 163 | EFI_TIMEOUT.
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| 164 | @param[in] ProcedureArgument The parameter passed into Procedure for all APs.
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| 165 |
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| 166 | @retval EFI_SUCCESS In blocking mode, all APs have finished before the
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| 167 | timeout expired.
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| 168 | @retval EFI_DEVICE_ERROR Caller processor is AP.
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| 169 | @retval EFI_NOT_STARTED No enabled APs exist in the system.
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| 170 | @retval EFI_NOT_READY Any enabled APs are busy.
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| 171 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before all
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| 172 | enabled APs have finished.
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| 173 | @retval EFI_INVALID_PARAMETER Procedure is NULL.
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| 174 | **/
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| 175 | EFI_STATUS
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| 176 | EFIAPI
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| 177 | PeiStartupAllAPs (
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| 178 | IN CONST EFI_PEI_SERVICES **PeiServices,
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| 179 | IN EFI_PEI_MP_SERVICES_PPI *This,
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| 180 | IN EFI_AP_PROCEDURE Procedure,
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| 181 | IN BOOLEAN SingleThread,
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| 182 | IN UINTN TimeoutInMicroSeconds,
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| 183 | IN VOID *ProcedureArgument OPTIONAL
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| 184 | );
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| 185 |
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| 186 | /**
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| 187 | This service lets the caller get one enabled AP to execute a caller-provided
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| 188 | function. The caller can request the BSP to wait for the completion
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| 189 | of the AP. This service may only be called from the BSP.
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| 190 |
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| 191 | This function is used to dispatch one enabled AP to the function specified by
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| 192 | Procedure passing in the argument specified by ProcedureArgument.
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| 193 | The execution is in blocking mode. The BSP waits until the AP finishes or
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| 194 | TimeoutInMicroSecondss expires.
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| 195 |
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| 196 | If the timeout specified by TimeoutInMicroseconds expires before the AP returns
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| 197 | from Procedure, then execution of Procedure by the AP is terminated. The AP is
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| 198 | available for subsequent calls to EFI_PEI_MP_SERVICES_PPI.StartupAllAPs() and
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| 199 | EFI_PEI_MP_SERVICES_PPI.StartupThisAP().
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| 200 |
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| 201 | @param[in] PeiServices An indirect pointer to the PEI Services Table
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| 202 | published by the PEI Foundation.
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| 203 | @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.
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| 204 | @param[in] Procedure A pointer to the function to be run on enabled APs of
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| 205 | the system.
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| 206 | @param[in] ProcessorNumber The handle number of the AP. The range is from 0 to the
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| 207 | total number of logical processors minus 1. The total
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| 208 | number of logical processors can be retrieved by
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| 209 | EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors().
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| 210 | @param[in] TimeoutInMicroseconds
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| 211 | Indicates the time limit in microseconds for APs to
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| 212 | return from Procedure, for blocking mode only. Zero
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| 213 | means infinity. If the timeout expires before all APs
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| 214 | return from Procedure, then Procedure on the failed APs
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| 215 | is terminated. All enabled APs are available for next
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| 216 | function assigned by EFI_PEI_MP_SERVICES_PPI.StartupAllAPs()
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| 217 | or EFI_PEI_MP_SERVICES_PPI.StartupThisAP(). If the
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| 218 | timeout expires in blocking mode, BSP returns
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| 219 | EFI_TIMEOUT.
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| 220 | @param[in] ProcedureArgument The parameter passed into Procedure for all APs.
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| 221 |
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| 222 | @retval EFI_SUCCESS In blocking mode, specified AP finished before the
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| 223 | timeout expires.
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| 224 | @retval EFI_DEVICE_ERROR The calling processor is an AP.
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| 225 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before the
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| 226 | specified AP has finished.
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| 227 | @retval EFI_NOT_FOUND The processor with the handle specified by
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| 228 | ProcessorNumber does not exist.
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| 229 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.
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| 230 | @retval EFI_INVALID_PARAMETER Procedure is NULL.
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| 231 | **/
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| 232 | EFI_STATUS
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| 233 | EFIAPI
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| 234 | PeiStartupThisAP (
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| 235 | IN CONST EFI_PEI_SERVICES **PeiServices,
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| 236 | IN EFI_PEI_MP_SERVICES_PPI *This,
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| 237 | IN EFI_AP_PROCEDURE Procedure,
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| 238 | IN UINTN ProcessorNumber,
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| 239 | IN UINTN TimeoutInMicroseconds,
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| 240 | IN VOID *ProcedureArgument OPTIONAL
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| 241 | );
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| 242 |
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| 243 | /**
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| 244 | This service switches the requested AP to be the BSP from that point onward.
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| 245 | This service changes the BSP for all purposes. This call can only be performed
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| 246 | by the current BSP.
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| 247 |
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| 248 | This service switches the requested AP to be the BSP from that point onward.
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| 249 | This service changes the BSP for all purposes. The new BSP can take over the
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| 250 | execution of the old BSP and continue seamlessly from where the old one left
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| 251 | off.
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| 252 |
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| 253 | If the BSP cannot be switched prior to the return from this service, then
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| 254 | EFI_UNSUPPORTED must be returned.
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| 255 |
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| 256 | @param[in] PeiServices An indirect pointer to the PEI Services Table
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| 257 | published by the PEI Foundation.
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| 258 | @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.
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| 259 | @param[in] ProcessorNumber The handle number of the AP. The range is from 0 to the
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| 260 | total number of logical processors minus 1. The total
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| 261 | number of logical processors can be retrieved by
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| 262 | EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors().
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| 263 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an enabled
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| 264 | AP. Otherwise, it will be disabled.
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| 265 |
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| 266 | @retval EFI_SUCCESS BSP successfully switched.
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| 267 | @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to this
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| 268 | service returning.
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| 269 | @retval EFI_UNSUPPORTED Switching the BSP is not supported.
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| 270 | @retval EFI_DEVICE_ERROR The calling processor is an AP.
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| 271 | @retval EFI_NOT_FOUND The processor with the handle specified by
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| 272 | ProcessorNumber does not exist.
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| 273 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or a disabled
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| 274 | AP.
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| 275 | @retval EFI_NOT_READY The specified AP is busy.
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| 276 | **/
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| 277 | EFI_STATUS
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| 278 | EFIAPI
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| 279 | PeiSwitchBSP (
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| 280 | IN CONST EFI_PEI_SERVICES **PeiServices,
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| 281 | IN EFI_PEI_MP_SERVICES_PPI *This,
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| 282 | IN UINTN ProcessorNumber,
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| 283 | IN BOOLEAN EnableOldBSP
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| 284 | );
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| 285 |
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| 286 | /**
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| 287 | This service lets the caller enable or disable an AP from this point onward.
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| 288 | This service may only be called from the BSP.
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| 289 |
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| 290 | This service allows the caller enable or disable an AP from this point onward.
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| 291 | The caller can optionally specify the health status of the AP by Health. If
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| 292 | an AP is being disabled, then the state of the disabled AP is implementation
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| 293 | dependent. If an AP is enabled, then the implementation must guarantee that a
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| 294 | complete initialization sequence is performed on the AP, so the AP is in a state
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| 295 | that is compatible with an MP operating system.
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| 296 |
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| 297 | If the enable or disable AP operation cannot be completed prior to the return
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| 298 | from this service, then EFI_UNSUPPORTED must be returned.
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| 299 |
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| 300 | @param[in] PeiServices An indirect pointer to the PEI Services Table
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| 301 | published by the PEI Foundation.
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| 302 | @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.
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| 303 | @param[in] ProcessorNumber The handle number of the AP. The range is from 0 to the
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| 304 | total number of logical processors minus 1. The total
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| 305 | number of logical processors can be retrieved by
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| 306 | EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors().
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| 307 | @param[in] EnableAP Specifies the new state for the processor for enabled,
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| 308 | FALSE for disabled.
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| 309 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies the
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| 310 | new health status of the AP. This flag corresponds to
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| 311 | StatusFlag defined in EFI_PEI_MP_SERVICES_PPI.GetProcessorInfo().
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| 312 | Only the PROCESSOR_HEALTH_STATUS_BIT is used. All other
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| 313 | bits are ignored. If it is NULL, this parameter is
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| 314 | ignored.
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| 315 |
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| 316 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.
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| 317 | @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed prior
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| 318 | to this service returning.
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| 319 | @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.
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| 320 | @retval EFI_DEVICE_ERROR The calling processor is an AP.
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| 321 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber
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| 322 | does not exist.
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| 323 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.
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| 324 | **/
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| 325 | EFI_STATUS
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| 326 | EFIAPI
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| 327 | PeiEnableDisableAP (
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| 328 | IN CONST EFI_PEI_SERVICES **PeiServices,
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| 329 | IN EFI_PEI_MP_SERVICES_PPI *This,
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| 330 | IN UINTN ProcessorNumber,
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| 331 | IN BOOLEAN EnableAP,
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| 332 | IN UINT32 *HealthFlag OPTIONAL
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| 333 | );
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| 334 |
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| 335 | /**
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| 336 | This return the handle number for the calling processor. This service may be
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| 337 | called from the BSP and APs.
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| 338 |
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| 339 | This service returns the processor handle number for the calling processor.
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| 340 | The returned value is in the range from 0 to the total number of logical
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| 341 | processors minus 1. The total number of logical processors can be retrieved
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| 342 | with EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors(). This service may be
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| 343 | called from the BSP and APs. If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER
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| 344 | is returned. Otherwise, the current processors handle number is returned in
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| 345 | ProcessorNumber, and EFI_SUCCESS is returned.
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| 346 |
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| 347 | @param[in] PeiServices An indirect pointer to the PEI Services Table
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| 348 | published by the PEI Foundation.
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| 349 | @param[in] This A pointer to the EFI_PEI_MP_SERVICES_PPI instance.
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| 350 | @param[out] ProcessorNumber The handle number of the AP. The range is from 0 to the
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| 351 | total number of logical processors minus 1. The total
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| 352 | number of logical processors can be retrieved by
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| 353 | EFI_PEI_MP_SERVICES_PPI.GetNumberOfProcessors().
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| 354 |
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| 355 | @retval EFI_SUCCESS The current processor handle number was returned in
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| 356 | ProcessorNumber.
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| 357 | @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.
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| 358 | **/
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| 359 | EFI_STATUS
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| 360 | EFIAPI
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| 361 | PeiWhoAmI (
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| 362 | IN CONST EFI_PEI_SERVICES **PeiServices,
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| 363 | IN EFI_PEI_MP_SERVICES_PPI *This,
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| 364 | OUT UINTN *ProcessorNumber
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| 365 | );
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| 366 |
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| 367 | /**
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| 368 | Collects BIST data from PPI.
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| 369 |
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| 370 | This function collects BIST data from Sec Platform Information2 PPI
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| 371 | or SEC Platform Information PPI.
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| 372 |
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| 373 | @param PeiServices Pointer to PEI Services Table
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|---|
| 374 |
|
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| 375 | **/
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|---|
| 376 | VOID
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|---|
| 377 | CollectBistDataFromPpi (
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| 378 | IN CONST EFI_PEI_SERVICES **PeiServices
|
|---|
| 379 | );
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| 380 |
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| 381 | /**
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| 382 | Implementation of the PlatformInformation2 service in EFI_SEC_PLATFORM_INFORMATION2_PPI.
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| 383 |
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| 384 | @param PeiServices The pointer to the PEI Services Table.
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|---|
| 385 | @param StructureSize The pointer to the variable describing size of the input buffer.
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|---|
| 386 | @param PlatformInformationRecord2 The pointer to the EFI_SEC_PLATFORM_INFORMATION_RECORD2.
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|---|
| 387 |
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|---|
| 388 | @retval EFI_SUCCESS The data was successfully returned.
|
|---|
| 389 | @retval EFI_BUFFER_TOO_SMALL The buffer was too small. The current buffer size needed to
|
|---|
| 390 | hold the record is returned in StructureSize.
|
|---|
| 391 |
|
|---|
| 392 | **/
|
|---|
| 393 | EFI_STATUS
|
|---|
| 394 | EFIAPI
|
|---|
| 395 | SecPlatformInformation2 (
|
|---|
| 396 | IN CONST EFI_PEI_SERVICES **PeiServices,
|
|---|
| 397 | IN OUT UINT64 *StructureSize,
|
|---|
| 398 | OUT EFI_SEC_PLATFORM_INFORMATION_RECORD2 *PlatformInformationRecord2
|
|---|
| 399 | );
|
|---|
| 400 |
|
|---|
| 401 | /**
|
|---|
| 402 | Migrates the Global Descriptor Table (GDT) to permanent memory.
|
|---|
| 403 |
|
|---|
| 404 | @retval EFI_SUCCESS The GDT was migrated successfully.
|
|---|
| 405 | @retval EFI_OUT_OF_RESOURCES The GDT could not be migrated due to lack of available memory.
|
|---|
| 406 |
|
|---|
| 407 | **/
|
|---|
| 408 | EFI_STATUS
|
|---|
| 409 | MigrateGdt (
|
|---|
| 410 | VOID
|
|---|
| 411 | );
|
|---|
| 412 |
|
|---|
| 413 | /**
|
|---|
| 414 | Initializes MP and exceptions handlers.
|
|---|
| 415 |
|
|---|
| 416 | @param PeiServices The pointer to the PEI Services Table.
|
|---|
| 417 |
|
|---|
| 418 | @retval EFI_SUCCESS MP was successfully initialized.
|
|---|
| 419 | @retval others Error occurred in MP initialization.
|
|---|
| 420 |
|
|---|
| 421 | **/
|
|---|
| 422 | EFI_STATUS
|
|---|
| 423 | InitializeCpuMpWorker (
|
|---|
| 424 | IN CONST EFI_PEI_SERVICES **PeiServices
|
|---|
| 425 | );
|
|---|
| 426 |
|
|---|
| 427 | /**
|
|---|
| 428 | Enable/setup stack guard for each processor if PcdCpuStackGuard is set to TRUE.
|
|---|
| 429 |
|
|---|
| 430 | Doing this in the memory-discovered callback is to make sure the Stack Guard
|
|---|
| 431 | feature to cover as most PEI code as possible.
|
|---|
| 432 |
|
|---|
| 433 | @param[in] PeiServices General purpose services available to every PEIM.
|
|---|
| 434 | @param[in] NotifyDescriptor The notification structure this PEIM registered on install.
|
|---|
| 435 | @param[in] Ppi The memory discovered PPI. Not used.
|
|---|
| 436 |
|
|---|
| 437 | @retval EFI_SUCCESS The function completed successfully.
|
|---|
| 438 | @retval others There's error in MP initialization.
|
|---|
| 439 | **/
|
|---|
| 440 | EFI_STATUS
|
|---|
| 441 | EFIAPI
|
|---|
| 442 | MemoryDiscoveredPpiNotifyCallback (
|
|---|
| 443 | IN EFI_PEI_SERVICES **PeiServices,
|
|---|
| 444 | IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
|
|---|
| 445 | IN VOID *Ppi
|
|---|
| 446 | );
|
|---|
| 447 |
|
|---|
| 448 | extern EFI_PEI_NOTIFY_DESCRIPTOR mPostMemNotifyList[];
|
|---|
| 449 |
|
|---|
| 450 | #endif
|
|---|
