/** @file\r
- CPU DXE Module.\r
+ CPU DXE Module to produce CPU MP Protocol.\r
\r
- Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2008 - 2017, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
#include "CpuDxe.h"\r
#include "CpuMp.h"\r
\r
-UINTN gMaxLogicalProcessorNumber;\r
-UINTN gApStackSize;\r
-UINTN gPollInterval = 100; // 100 microseconds\r
-\r
-MP_SYSTEM_DATA mMpSystemData;\r
-\r
-VOID *mCommonStack = 0;\r
-VOID *mTopOfApCommonStack = 0;\r
-VOID *mApStackStart = 0;\r
+EFI_HANDLE mMpServiceHandle = NULL;\r
+UINTN mNumberOfProcessors = 1;\r
\r
EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {\r
GetNumberOfProcessors,\r
GetProcessorInfo,\r
- NULL, // StartupAllAPs,\r
+ StartupAllAPs,\r
StartupThisAP,\r
- NULL, // SwitchBSP,\r
+ SwitchBSP,\r
EnableDisableAP,\r
WhoAmI\r
};\r
\r
-/**\r
- Check whether caller processor is BSP.\r
-\r
- @retval TRUE the caller is BSP\r
- @retval FALSE the caller is AP\r
-\r
-**/\r
-BOOLEAN\r
-IsBSP (\r
- VOID\r
- )\r
-{\r
- UINTN CpuIndex;\r
- CPU_DATA_BLOCK *CpuData;\r
-\r
- CpuData = NULL;\r
-\r
- WhoAmI (&mMpServicesTemplate, &CpuIndex);\r
- CpuData = &mMpSystemData.CpuDatas[CpuIndex];\r
-\r
- return CpuData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT ? TRUE : FALSE;\r
-}\r
-\r
-/**\r
- Get the Application Processors state.\r
-\r
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r
-\r
- @retval CPU_STATE the AP status\r
-\r
-**/\r
-CPU_STATE\r
-GetApState (\r
- IN CPU_DATA_BLOCK *CpuData\r
- )\r
-{\r
- CPU_STATE State;\r
-\r
- while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {\r
- CpuPause ();\r
- }\r
-\r
- State = CpuData->State;\r
- ReleaseSpinLock (&CpuData->CpuDataLock);\r
-\r
- return State;\r
-}\r
-\r
-/**\r
- Set the Application Processors state.\r
-\r
- @param CpuData The pointer to CPU_DATA_BLOCK of specified AP\r
- @param State The AP status\r
-\r
-**/\r
-VOID\r
-SetApState (\r
- IN CPU_DATA_BLOCK *CpuData,\r
- IN CPU_STATE State\r
- )\r
-{\r
- while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {\r
- CpuPause ();\r
- }\r
-\r
- CpuData->State = State;\r
- ReleaseSpinLock (&CpuData->CpuDataLock);\r
-}\r
-\r
-/**\r
- Set the Application Processor prepare to run a function specified\r
- by Params.\r
-\r
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r
- @param Procedure A pointer to the function to be run on enabled APs of the system\r
- @param ProcedureArgument Pointer to the optional parameter of the assigned function\r
-\r
-**/\r
-VOID\r
-SetApProcedure (\r
- IN CPU_DATA_BLOCK *CpuData,\r
- IN EFI_AP_PROCEDURE Procedure,\r
- IN VOID *ProcedureArgument\r
- )\r
-{\r
- while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {\r
- CpuPause ();\r
- }\r
-\r
- CpuData->Parameter = ProcedureArgument;\r
- CpuData->Procedure = Procedure;\r
- ReleaseSpinLock (&CpuData->CpuDataLock);\r
-}\r
-\r
-/**\r
- Check the Application Processors Status whether contains the Flags.\r
-\r
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r
- @param Flags the StatusFlag describing in EFI_PROCESSOR_INFORMATION\r
-\r
- @retval TRUE the AP status includes the StatusFlag\r
- @retval FALSE the AP status excludes the StatusFlag\r
-\r
-**/\r
-BOOLEAN\r
-TestCpuStatusFlag (\r
- IN CPU_DATA_BLOCK *CpuData,\r
- IN UINT32 Flags\r
- )\r
-{\r
- UINT32 Ret;\r
-\r
- while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {\r
- CpuPause ();\r
- }\r
-\r
- Ret = CpuData->Info.StatusFlag & Flags;\r
- ReleaseSpinLock (&CpuData->CpuDataLock);\r
-\r
- return !!(Ret);\r
-}\r
-\r
-/**\r
- Bitwise-Or of the Application Processors Status with the Flags.\r
-\r
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r
- @param Flags the StatusFlag describing in EFI_PROCESSOR_INFORMATION\r
-\r
-**/\r
-VOID\r
-CpuStatusFlagOr (\r
- IN CPU_DATA_BLOCK *CpuData,\r
- IN UINT32 Flags\r
- )\r
-{\r
- while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {\r
- CpuPause ();\r
- }\r
-\r
- CpuData->Info.StatusFlag |= Flags;\r
- ReleaseSpinLock (&CpuData->CpuDataLock);\r
-}\r
-\r
-/**\r
- Bitwise-AndNot of the Application Processors Status with the Flags.\r
-\r
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r
- @param Flags the StatusFlag describing in EFI_PROCESSOR_INFORMATION\r
-\r
-**/\r
-VOID\r
-CpuStatusFlagAndNot (\r
- IN CPU_DATA_BLOCK *CpuData,\r
- IN UINT32 Flags\r
- )\r
-{\r
- while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {\r
- CpuPause ();\r
- }\r
-\r
- CpuData->Info.StatusFlag &= ~Flags;\r
- ReleaseSpinLock (&CpuData->CpuDataLock);\r
-}\r
-\r
-/**\r
- Searches for the next blocking AP.\r
-\r
- Search for the next AP that is put in blocking state by single-threaded StartupAllAPs().\r
-\r
- @param NextNumber Pointer to the processor number of the next blocking AP.\r
-\r
- @retval EFI_SUCCESS The next blocking AP has been found.\r
- @retval EFI_NOT_FOUND No blocking AP exists.\r
-\r
-**/\r
-EFI_STATUS\r
-GetNextBlockedNumber (\r
- OUT UINTN *NextNumber\r
- )\r
-{\r
- UINTN Number;\r
- CPU_STATE CpuState;\r
- CPU_DATA_BLOCK *CpuData;\r
-\r
- for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {\r
- CpuData = &mMpSystemData.CpuDatas[Number];\r
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {\r
- //\r
- // Skip BSP\r
- //\r
- continue;\r
- }\r
-\r
- CpuState = GetApState (CpuData);\r
- if (CpuState == CpuStateBlocked) {\r
- *NextNumber = Number;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
/**\r
This service retrieves the number of logical processor in the platform\r
and the number of those logical processors that are enabled on this boot.\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- if (!IsBSP ()) {\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- *NumberOfProcessors = mMpSystemData.NumberOfProcessors;\r
- *NumberOfEnabledProcessors = mMpSystemData.NumberOfEnabledProcessors;\r
- return EFI_SUCCESS;\r
+ return MpInitLibGetNumberOfProcessors (\r
+ NumberOfProcessors,\r
+ NumberOfEnabledProcessors\r
+ );\r
}\r
\r
/**\r
OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer\r
)\r
{\r
- if (ProcessorInfoBuffer == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
+ return MpInitLibGetProcessorInfo (ProcessorNumber, ProcessorInfoBuffer, NULL);\r
+}\r
\r
- if (!IsBSP ()) {\r
- return EFI_DEVICE_ERROR;\r
- }\r
+/**\r
+ This service executes a caller provided function on all enabled APs. APs can\r
+ run either simultaneously or one at a time in sequence. This service supports\r
+ both blocking and non-blocking requests. The non-blocking requests use EFI\r
+ events so the BSP can detect when the APs have finished. This service may only\r
+ be called from the BSP.\r
+\r
+ This function is used to dispatch all the enabled APs to the function specified\r
+ by Procedure. If any enabled AP is busy, then EFI_NOT_READY is returned\r
+ immediately and Procedure is not started on any AP.\r
+\r
+ If SingleThread is TRUE, all the enabled APs execute the function specified by\r
+ Procedure one by one, in ascending order of processor handle number. Otherwise,\r
+ all the enabled APs execute the function specified by Procedure simultaneously.\r
+\r
+ If WaitEvent is NULL, execution is in blocking mode. The BSP waits until all\r
+ APs finish or TimeoutInMicroseconds expires. Otherwise, execution is in non-blocking\r
+ mode, and the BSP returns from this service without waiting for APs. If a\r
+ non-blocking mode is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r
+ is signaled, then EFI_UNSUPPORTED must be returned.\r
+\r
+ If the timeout specified by TimeoutInMicroseconds expires before all APs return\r
+ from Procedure, then Procedure on the failed APs is terminated. All enabled APs\r
+ are always available for further calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r
+ and EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). If FailedCpuList is not NULL, its\r
+ content points to the list of processor handle numbers in which Procedure was\r
+ terminated.\r
+\r
+ Note: It is the responsibility of the consumer of the EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r
+ to make sure that the nature of the code that is executed on the BSP and the\r
+ dispatched APs is well controlled. The MP Services Protocol does not guarantee\r
+ that the Procedure function is MP-safe. Hence, the tasks that can be run in\r
+ parallel are limited to certain independent tasks and well-controlled exclusive\r
+ code. EFI services and protocols may not be called by APs unless otherwise\r
+ specified.\r
+\r
+ In blocking execution mode, BSP waits until all APs finish or\r
+ TimeoutInMicroseconds expires.\r
+\r
+ In non-blocking execution mode, BSP is freed to return to the caller and then\r
+ proceed to the next task without having to wait for APs. The following\r
+ sequence needs to occur in a non-blocking execution mode:\r
+\r
+ -# The caller that intends to use this MP Services Protocol in non-blocking\r
+ mode creates WaitEvent by calling the EFI CreateEvent() service. The caller\r
+ invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the parameter WaitEvent\r
+ is not NULL, then StartupAllAPs() executes in non-blocking mode. It requests\r
+ the function specified by Procedure to be started on all the enabled APs,\r
+ and releases the BSP to continue with other tasks.\r
+ -# The caller can use the CheckEvent() and WaitForEvent() services to check\r
+ the state of the WaitEvent created in step 1.\r
+ -# When the APs complete their task or TimeoutInMicroSecondss expires, the MP\r
+ Service signals WaitEvent by calling the EFI SignalEvent() function. If\r
+ FailedCpuList is not NULL, its content is available when WaitEvent is\r
+ signaled. If all APs returned from Procedure prior to the timeout, then\r
+ FailedCpuList is set to NULL. If not all APs return from Procedure before\r
+ the timeout, then FailedCpuList is filled in with the list of the failed\r
+ APs. The buffer is allocated by MP Service Protocol using AllocatePool().\r
+ It is the caller's responsibility to free the buffer with FreePool() service.\r
+ -# This invocation of SignalEvent() function informs the caller that invoked\r
+ EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() that either all the APs completed\r
+ the specified task or a timeout occurred. The contents of FailedCpuList\r
+ can be examined to determine which APs did not complete the specified task\r
+ prior to the timeout.\r
\r
- if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {\r
- return EFI_NOT_FOUND;\r
- }\r
+ @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r
+ instance.\r
+ @param[in] Procedure A pointer to the function to be run on\r
+ enabled APs of the system. See type\r
+ EFI_AP_PROCEDURE.\r
+ @param[in] SingleThread If TRUE, then all the enabled APs execute\r
+ the function specified by Procedure one by\r
+ one, in ascending order of processor handle\r
+ number. If FALSE, then all the enabled APs\r
+ execute the function specified by Procedure\r
+ simultaneously.\r
+ @param[in] WaitEvent The event created by the caller with CreateEvent()\r
+ service. If it is NULL, then execute in\r
+ blocking mode. BSP waits until all APs finish\r
+ or TimeoutInMicroseconds expires. If it's\r
+ not NULL, then execute in non-blocking mode.\r
+ BSP requests the function specified by\r
+ Procedure to be started on all the enabled\r
+ APs, and go on executing immediately. If\r
+ all return from Procedure, or TimeoutInMicroseconds\r
+ expires, this event is signaled. The BSP\r
+ can use the CheckEvent() or WaitForEvent()\r
+ services to check the state of event. Type\r
+ EFI_EVENT is defined in CreateEvent() in\r
+ the Unified Extensible Firmware Interface\r
+ Specification.\r
+ @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r
+ APs to return from Procedure, either for\r
+ blocking or non-blocking mode. Zero means\r
+ infinity. If the timeout expires before\r
+ all APs return from Procedure, then Procedure\r
+ on the failed APs is terminated. All enabled\r
+ APs are available for next function assigned\r
+ by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r
+ or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r
+ If the timeout expires in blocking mode,\r
+ BSP returns EFI_TIMEOUT. If the timeout\r
+ expires in non-blocking mode, WaitEvent\r
+ is signaled with SignalEvent().\r
+ @param[in] ProcedureArgument The parameter passed into Procedure for\r
+ all APs.\r
+ @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,\r
+ if all APs finish successfully, then its\r
+ content is set to NULL. If not all APs\r
+ finish before timeout expires, then its\r
+ content is set to address of the buffer\r
+ holding handle numbers of the failed APs.\r
+ The buffer is allocated by MP Service Protocol,\r
+ and it's the caller's responsibility to\r
+ free the buffer with FreePool() service.\r
+ In blocking mode, it is ready for consumption\r
+ when the call returns. In non-blocking mode,\r
+ it is ready when WaitEvent is signaled. The\r
+ list of failed CPU is terminated by\r
+ END_OF_CPU_LIST.\r
+\r
+ @retval EFI_SUCCESS In blocking mode, all APs have finished before\r
+ the timeout expired.\r
+ @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r
+ to all enabled APs.\r
+ @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r
+ UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r
+ signaled.\r
+ @retval EFI_DEVICE_ERROR Caller processor is AP.\r
+ @retval EFI_NOT_STARTED No enabled APs exist in the system.\r
+ @retval EFI_NOT_READY Any enabled APs are busy.\r
+ @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r
+ all enabled APs have finished.\r
+ @retval EFI_INVALID_PARAMETER Procedure is NULL.\r
\r
- CopyMem (ProcessorInfoBuffer, &mMpSystemData.CpuDatas[ProcessorNumber], sizeof (EFI_PROCESSOR_INFORMATION));\r
- return EFI_SUCCESS;\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+StartupAllAPs (\r
+ IN EFI_MP_SERVICES_PROTOCOL *This,\r
+ IN EFI_AP_PROCEDURE Procedure,\r
+ IN BOOLEAN SingleThread,\r
+ IN EFI_EVENT WaitEvent OPTIONAL,\r
+ IN UINTN TimeoutInMicroseconds,\r
+ IN VOID *ProcedureArgument OPTIONAL,\r
+ OUT UINTN **FailedCpuList OPTIONAL\r
+ )\r
+{\r
+ return MpInitLibStartupAllAPs (\r
+ Procedure,\r
+ SingleThread,\r
+ WaitEvent,\r
+ TimeoutInMicroseconds,\r
+ ProcedureArgument,\r
+ FailedCpuList\r
+ );\r
}\r
\r
/**\r
\r
@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r
instance.\r
- @param[in] Procedure A pointer to the function to be run on\r
- enabled APs of the system. See type\r
+ @param[in] Procedure A pointer to the function to be run on the\r
+ designated AP of the system. See type\r
EFI_AP_PROCEDURE.\r
@param[in] ProcessorNumber The handle number of the AP. The range is\r
from 0 to the total number of logical\r
EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r
@param[in] WaitEvent The event created by the caller with CreateEvent()\r
service. If it is NULL, then execute in\r
- blocking mode. BSP waits until all APs finish\r
- or TimeoutInMicroseconds expires. If it's\r
+ blocking mode. BSP waits until this AP finish\r
+ or TimeoutInMicroSeconds expires. If it's\r
not NULL, then execute in non-blocking mode.\r
BSP requests the function specified by\r
- Procedure to be started on all the enabled\r
- APs, and go on executing immediately. If\r
- all return from Procedure or TimeoutInMicroseconds\r
+ Procedure to be started on this AP,\r
+ and go on executing immediately. If this AP\r
+ return from Procedure or TimeoutInMicroSeconds\r
expires, this event is signaled. The BSP\r
can use the CheckEvent() or WaitForEvent()\r
services to check the state of event. Type\r
the Unified Extensible Firmware Interface\r
Specification.\r
@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r
- APs to return from Procedure, either for\r
+ this AP to finish this Procedure, either for\r
blocking or non-blocking mode. Zero means\r
infinity. If the timeout expires before\r
- all APs return from Procedure, then Procedure\r
- on the failed APs is terminated. All enabled\r
- APs are available for next function assigned\r
+ this AP returns from Procedure, then Procedure\r
+ on the AP is terminated. The\r
+ AP is available for next function assigned\r
by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r
or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r
If the timeout expires in blocking mode,\r
BSP returns EFI_TIMEOUT. If the timeout\r
expires in non-blocking mode, WaitEvent\r
is signaled with SignalEvent().\r
- @param[in] ProcedureArgument The parameter passed into Procedure for\r
- all APs.\r
+ @param[in] ProcedureArgument The parameter passed into Procedure on the\r
+ specified AP.\r
@param[out] Finished If NULL, this parameter is ignored. In\r
blocking mode, this parameter is ignored.\r
In non-blocking mode, if AP returns from\r
OUT BOOLEAN *Finished OPTIONAL\r
)\r
{\r
- CPU_DATA_BLOCK *CpuData;\r
- EFI_STATUS Status;\r
-\r
- CpuData = NULL;\r
-\r
- if (Finished != NULL) {\r
- *Finished = FALSE;\r
- }\r
-\r
- if (!IsBSP ()) {\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- if (Procedure == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];\r
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT) ||\r
- !TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (GetApState (CpuData) != CpuStateIdle) {\r
- return EFI_NOT_READY;\r
- }\r
-\r
- SetApState (CpuData, CpuStateReady);\r
-\r
- SetApProcedure (CpuData, Procedure, ProcedureArgument);\r
+ return MpInitLibStartupThisAP (\r
+ Procedure,\r
+ ProcessorNumber,\r
+ WaitEvent,\r
+ TimeoutInMicroseconds,\r
+ ProcedureArgument,\r
+ Finished\r
+ );\r
+}\r
\r
- CpuData->Timeout = TimeoutInMicroseconds;\r
- CpuData->WaitEvent = WaitEvent;\r
- CpuData->TimeoutActive = !!(TimeoutInMicroseconds);\r
- CpuData->Finished = Finished;\r
+/**\r
+ This service switches the requested AP to be the BSP from that point onward.\r
+ This service changes the BSP for all purposes. This call can only be performed\r
+ by the current BSP.\r
\r
- if (WaitEvent != NULL) {\r
- //\r
- // Non Blocking\r
- //\r
- Status = gBS->SetTimer (\r
- CpuData->CheckThisAPEvent,\r
- TimerPeriodic,\r
- EFI_TIMER_PERIOD_MICROSECONDS (100)\r
- );\r
- return Status;\r
- }\r
+ This service switches the requested AP to be the BSP from that point onward.\r
+ This service changes the BSP for all purposes. The new BSP can take over the\r
+ execution of the old BSP and continue seamlessly from where the old one left\r
+ off. This service may not be supported after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r
+ is signaled.\r
\r
- //\r
- // Blocking\r
- //\r
- while (TRUE) {\r
- if (GetApState (CpuData) == CpuStateFinished) {\r
- SetApState (CpuData, CpuStateIdle);\r
- break;\r
- }\r
+ If the BSP cannot be switched prior to the return from this service, then\r
+ EFI_UNSUPPORTED must be returned.\r
\r
- if (CpuData->TimeoutActive && CpuData->Timeout < 0) {\r
- ResetProcessorToIdleState (CpuData);\r
- return EFI_TIMEOUT;\r
- }\r
+ @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r
+ @param[in] ProcessorNumber The handle number of AP that is to become the new\r
+ BSP. The range is from 0 to the total number of\r
+ logical processors minus 1. The total number of\r
+ logical processors can be retrieved by\r
+ EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r
+ @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r
+ enabled AP. Otherwise, it will be disabled.\r
\r
- gBS->Stall (gPollInterval);\r
- CpuData->Timeout -= gPollInterval;\r
- }\r
+ @retval EFI_SUCCESS BSP successfully switched.\r
+ @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to\r
+ this service returning.\r
+ @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r
+ @retval EFI_DEVICE_ERROR The calling processor is an AP.\r
+ @retval EFI_NOT_FOUND The processor with the handle specified by\r
+ ProcessorNumber does not exist.\r
+ @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or\r
+ a disabled AP.\r
+ @retval EFI_NOT_READY The specified AP is busy.\r
\r
- return EFI_SUCCESS;\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+SwitchBSP (\r
+ IN EFI_MP_SERVICES_PROTOCOL *This,\r
+ IN UINTN ProcessorNumber,\r
+ IN BOOLEAN EnableOldBSP\r
+ )\r
+{\r
+ return MpInitLibSwitchBSP (ProcessorNumber, EnableOldBSP);\r
}\r
\r
/**\r
from this service, then EFI_UNSUPPORTED must be returned.\r
\r
@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r
- @param[in] ProcessorNumber The handle number of AP that is to become the new\r
- BSP. The range is from 0 to the total number of\r
+ @param[in] ProcessorNumber The handle number of AP.\r
+ The range is from 0 to the total number of\r
logical processors minus 1. The total number of\r
logical processors can be retrieved by\r
EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r
IN UINT32 *HealthFlag OPTIONAL\r
)\r
{\r
- CPU_DATA_BLOCK *CpuData;\r
-\r
- if (!IsBSP ()) {\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];\r
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (GetApState (CpuData) != CpuStateIdle) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- if (EnableAP) {\r
- if (!(TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT))) {\r
- mMpSystemData.NumberOfEnabledProcessors++;\r
- }\r
- CpuStatusFlagOr (CpuData, PROCESSOR_ENABLED_BIT);\r
- } else {\r
- if (TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {\r
- mMpSystemData.NumberOfEnabledProcessors--;\r
- }\r
- CpuStatusFlagAndNot (CpuData, PROCESSOR_ENABLED_BIT);\r
- }\r
-\r
- if (HealthFlag != NULL) {\r
- CpuStatusFlagAndNot (CpuData, (UINT32)~PROCESSOR_HEALTH_STATUS_BIT);\r
- CpuStatusFlagOr (CpuData, (*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT));\r
- }\r
-\r
- return EFI_SUCCESS;\r
+ return MpInitLibEnableDisableAP (ProcessorNumber, EnableAP, HealthFlag);\r
}\r
\r
/**\r
ProcessorNumber, and EFI_SUCCESS is returned.\r
\r
@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r
- @param[out] ProcessorNumber The handle number of AP that is to become the new\r
- BSP. The range is from 0 to the total number of\r
+ @param[out] ProcessorNumber Pointer to the handle number of AP.\r
+ The range is from 0 to the total number of\r
logical processors minus 1. The total number of\r
logical processors can be retrieved by\r
EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r
OUT UINTN *ProcessorNumber\r
)\r
{\r
- UINTN Index;\r
- UINT32 ProcessorId;\r
-\r
- if (ProcessorNumber == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- ProcessorId = GetApicId ();\r
- for (Index = 0; Index < mMpSystemData.NumberOfProcessors; Index++) {\r
- if (mMpSystemData.CpuDatas[Index].Info.ProcessorId == ProcessorId) {\r
- break;\r
- }\r
- }\r
-\r
- *ProcessorNumber = Index;\r
- return EFI_SUCCESS;\r
+ return MpInitLibWhoAmI (ProcessorNumber);;\r
}\r
\r
/**\r
- Terminate AP's task and set it to idle state.\r
-\r
- This function terminates AP's task due to timeout by sending INIT-SIPI,\r
- and sends it to idle state.\r
+ Collects BIST data from HOB.\r
\r
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r
+ This function collects BIST data from HOB built from Sec Platform Information\r
+ PPI or SEC Platform Information2 PPI.\r
\r
**/\r
VOID\r
-ResetProcessorToIdleState (\r
- IN CPU_DATA_BLOCK *CpuData\r
- )\r
-{\r
-}\r
-\r
-/**\r
- Application Processors do loop routine\r
- after switch to its own stack.\r
-\r
- @param Context1 A pointer to the context to pass into the function.\r
- @param Context2 A pointer to the context to pass into the function.\r
-\r
-**/\r
-VOID\r
-ProcessorToIdleState (\r
- IN VOID *Context1, OPTIONAL\r
- IN VOID *Context2 OPTIONAL\r
+CollectBistDataFromHob (\r
+ VOID\r
)\r
{\r
- DEBUG ((DEBUG_INFO, "Ap apicid is %d\n", GetApicId ()));\r
+ EFI_HOB_GUID_TYPE *GuidHob;\r
+ EFI_SEC_PLATFORM_INFORMATION_RECORD2 *SecPlatformInformation2;\r
+ EFI_SEC_PLATFORM_INFORMATION_RECORD *SecPlatformInformation;\r
+ UINTN NumberOfData;\r
+ EFI_SEC_PLATFORM_INFORMATION_CPU *CpuInstance;\r
+ EFI_SEC_PLATFORM_INFORMATION_CPU BspCpuInstance;\r
+ UINTN ProcessorNumber;\r
+ EFI_PROCESSOR_INFORMATION ProcessorInfo;\r
+ EFI_HEALTH_FLAGS BistData;\r
+ UINTN CpuInstanceNumber;\r
+\r
+ SecPlatformInformation2 = NULL;\r
+ SecPlatformInformation = NULL;\r
\r
- AsmApDoneWithCommonStack ();\r
+ //\r
+ // Get gEfiSecPlatformInformation2PpiGuid Guided HOB firstly\r
+ //\r
+ GuidHob = GetFirstGuidHob (&gEfiSecPlatformInformation2PpiGuid);\r
+ if (GuidHob != NULL) {\r
+ //\r
+ // Sec Platform Information2 PPI includes BSP/APs' BIST information\r
+ //\r
+ SecPlatformInformation2 = GET_GUID_HOB_DATA (GuidHob);\r
+ NumberOfData = SecPlatformInformation2->NumberOfCpus;\r
+ CpuInstance = SecPlatformInformation2->CpuInstance;\r
+ } else {\r
+ //\r
+ // Otherwise, get gEfiSecPlatformInformationPpiGuid Guided HOB\r
+ //\r
+ GuidHob = GetFirstGuidHob (&gEfiSecPlatformInformationPpiGuid);\r
+ if (GuidHob != NULL) {\r
+ SecPlatformInformation = GET_GUID_HOB_DATA (GuidHob);\r
+ NumberOfData = 1;\r
+ //\r
+ // SEC Platform Information only includes BSP's BIST information\r
+ // does not have BSP's APIC ID\r
+ //\r
+ BspCpuInstance.CpuLocation = GetApicId ();\r
+ BspCpuInstance.InfoRecord.IA32HealthFlags.Uint32 = SecPlatformInformation->IA32HealthFlags.Uint32;\r
+ CpuInstance = &BspCpuInstance;\r
+ } else {\r
+ DEBUG ((DEBUG_INFO, "Does not find any HOB stored CPU BIST information!\n"));\r
+ //\r
+ // Does not find any HOB stored BIST information\r
+ //\r
+ return;\r
+ }\r
+ }\r
\r
- CpuSleep ();\r
- CpuDeadLoop ();\r
+ for (ProcessorNumber = 0; ProcessorNumber < mNumberOfProcessors; ProcessorNumber++) {\r
+ MpInitLibGetProcessorInfo (ProcessorNumber, &ProcessorInfo, &BistData);\r
+ for (CpuInstanceNumber = 0; CpuInstanceNumber < NumberOfData; CpuInstanceNumber++) {\r
+ if (ProcessorInfo.ProcessorId == CpuInstance[CpuInstanceNumber].CpuLocation) {\r
+ //\r
+ // Update CPU health status for MP Services Protocol according to BIST data.\r
+ //\r
+ BistData = CpuInstance[CpuInstanceNumber].InfoRecord.IA32HealthFlags;\r
+ }\r
+ }\r
+ if (BistData.Uint32 != 0) {\r
+ //\r
+ // Report Status Code that self test is failed\r
+ //\r
+ REPORT_STATUS_CODE (\r
+ EFI_ERROR_CODE | EFI_ERROR_MAJOR,\r
+ (EFI_COMPUTING_UNIT_HOST_PROCESSOR | EFI_CU_HP_EC_SELF_TEST)\r
+ );\r
+ }\r
+ }\r
}\r
\r
/**\r
- Checks AP' status periodically.\r
+ Get GDT register value.\r
\r
- This function is triggerred by timer perodically to check the\r
- state of AP forStartupThisAP() executed in non-blocking mode.\r
+ This function is mainly for AP purpose because AP may have different GDT\r
+ table than BSP.\r
\r
- @param Event Event triggered.\r
- @param Context Parameter passed with the event.\r
+ @param[in,out] Buffer The pointer to private data buffer.\r
\r
**/\r
VOID\r
EFIAPI\r
-CheckThisAPStatus (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
+GetGdtr (\r
+ IN OUT VOID *Buffer\r
)\r
{\r
- CPU_DATA_BLOCK *CpuData;\r
- CPU_STATE CpuState;\r
-\r
- CpuData = (CPU_DATA_BLOCK *) Context;\r
- if (CpuData->TimeoutActive) {\r
- CpuData->Timeout -= gPollInterval;\r
- }\r
-\r
- CpuState = GetApState (CpuData);\r
-\r
- if (CpuState == CpuStateFinished) {\r
- if (CpuData->Finished) {\r
- *CpuData->Finished = TRUE;\r
- }\r
- SetApState (CpuData, CpuStateIdle);\r
- goto out;\r
- }\r
-\r
- if (CpuData->TimeoutActive && CpuData->Timeout < 0) {\r
- if (CpuState != CpuStateIdle &&\r
- CpuData->Finished) {\r
- *CpuData->Finished = FALSE;\r
- }\r
- ResetProcessorToIdleState (CpuData);\r
- goto out;\r
- }\r
-\r
- return;\r
-\r
-out:\r
- gBS->SetTimer (CpuData->CheckThisAPEvent, TimerCancel, 0);\r
- if (CpuData->WaitEvent) {\r
- gBS->SignalEvent (CpuData->WaitEvent);\r
- CpuData->WaitEvent = NULL;\r
- }\r
+ AsmReadGdtr ((IA32_DESCRIPTOR *)Buffer);\r
}\r
\r
/**\r
- Application Processor C code entry point.\r
+ Initializes CPU exceptions handlers for the sake of stack switch requirement.\r
+\r
+ This function is a wrapper of InitializeCpuExceptionHandlersEx. It's mainly\r
+ for the sake of AP's init because of EFI_AP_PROCEDURE API requirement.\r
+\r
+ @param[in,out] Buffer The pointer to private data buffer.\r
\r
**/\r
VOID\r
EFIAPI\r
-ApEntryPointInC (\r
- VOID\r
+InitializeExceptionStackSwitchHandlers (\r
+ IN OUT VOID *Buffer\r
)\r
{\r
- VOID* TopOfApStack;\r
-\r
- FillInProcessorInformation (FALSE, mMpSystemData.NumberOfProcessors);\r
- TopOfApStack = (UINT8*)mApStackStart + gApStackSize;\r
- mApStackStart = TopOfApStack;\r
-\r
- mMpSystemData.NumberOfProcessors++;\r
+ CPU_EXCEPTION_INIT_DATA *EssData;\r
+ IA32_DESCRIPTOR Idtr;\r
+ EFI_STATUS Status;\r
\r
- SwitchStack (\r
- (SWITCH_STACK_ENTRY_POINT)(UINTN)ProcessorToIdleState,\r
- NULL,\r
- NULL,\r
- TopOfApStack);\r
+ EssData = Buffer;\r
+ //\r
+ // We don't plan to replace IDT table with a new one, but we should not assume\r
+ // the AP's IDT is the same as BSP's IDT either.\r
+ //\r
+ AsmReadIdtr (&Idtr);\r
+ EssData->Ia32.IdtTable = (VOID *)Idtr.Base;\r
+ EssData->Ia32.IdtTableSize = Idtr.Limit + 1;\r
+ Status = InitializeCpuExceptionHandlersEx (NULL, EssData);\r
+ ASSERT_EFI_ERROR (Status);\r
}\r
\r
/**\r
- This function is called by all processors (both BSP and AP) once and collects MP related data.\r
+ Initializes MP exceptions handlers for the sake of stack switch requirement.\r
\r
- @param Bsp TRUE if the CPU is BSP\r
- @param ProcessorNumber The specific processor number\r
-\r
- @retval EFI_SUCCESS Data for the processor collected and filled in\r
+ This function will allocate required resources required to setup stack switch\r
+ and pass them through CPU_EXCEPTION_INIT_DATA to each logic processor.\r
\r
**/\r
-EFI_STATUS\r
-FillInProcessorInformation (\r
- IN BOOLEAN Bsp,\r
- IN UINTN ProcessorNumber\r
+VOID\r
+InitializeMpExceptionStackSwitchHandlers (\r
+ VOID\r
)\r
{\r
- CPU_DATA_BLOCK *CpuData;\r
- UINT32 ProcessorId;\r
-\r
- CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];\r
- ProcessorId = GetApicId ();\r
- CpuData->Info.ProcessorId = ProcessorId;\r
- CpuData->Info.StatusFlag = PROCESSOR_ENABLED_BIT | PROCESSOR_HEALTH_STATUS_BIT;\r
- if (Bsp) {\r
- CpuData->Info.StatusFlag |= PROCESSOR_AS_BSP_BIT;\r
+ UINTN Index;\r
+ UINTN Bsp;\r
+ UINTN ExceptionNumber;\r
+ UINTN OldGdtSize;\r
+ UINTN NewGdtSize;\r
+ UINTN NewStackSize;\r
+ IA32_DESCRIPTOR Gdtr;\r
+ CPU_EXCEPTION_INIT_DATA EssData;\r
+ UINT8 *GdtBuffer;\r
+ UINT8 *StackTop;\r
+\r
+ if (!PcdGetBool (PcdCpuStackGuard)) {\r
+ return;\r
}\r
- CpuData->Info.Location.Package = ProcessorId;\r
- CpuData->Info.Location.Core = 0;\r
- CpuData->Info.Location.Thread = 0;\r
- CpuData->State = Bsp ? CpuStateBuzy : CpuStateIdle;\r
\r
- CpuData->Procedure = NULL;\r
- CpuData->Parameter = NULL;\r
- InitializeSpinLock (&CpuData->CpuDataLock);\r
+ ExceptionNumber = FixedPcdGetSize (PcdCpuStackSwitchExceptionList);\r
+ NewStackSize = FixedPcdGet32 (PcdCpuKnownGoodStackSize) * ExceptionNumber;\r
\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Prepare the System Data.\r
+ StackTop = AllocateRuntimeZeroPool (NewStackSize * mNumberOfProcessors);\r
+ ASSERT (StackTop != NULL);\r
+ StackTop += NewStackSize * mNumberOfProcessors;\r
\r
- @retval EFI_SUCCESS the System Data finished initilization.\r
+ //\r
+ // The default exception handlers must have been initialized. Let's just skip\r
+ // it in this method.\r
+ //\r
+ EssData.Ia32.Revision = CPU_EXCEPTION_INIT_DATA_REV;\r
+ EssData.Ia32.InitDefaultHandlers = FALSE;\r
\r
-**/\r
-EFI_STATUS\r
-InitMpSystemData (\r
- VOID\r
- )\r
-{\r
- UINTN ProcessorNumber;\r
- CPU_DATA_BLOCK *CpuData;\r
- EFI_STATUS Status;\r
+ EssData.Ia32.StackSwitchExceptions = FixedPcdGetPtr(PcdCpuStackSwitchExceptionList);\r
+ EssData.Ia32.StackSwitchExceptionNumber = ExceptionNumber;\r
+ EssData.Ia32.KnownGoodStackSize = FixedPcdGet32(PcdCpuKnownGoodStackSize);\r
\r
- ZeroMem (&mMpSystemData, sizeof (MP_SYSTEM_DATA));\r
+ MpInitLibWhoAmI (&Bsp);\r
+ for (Index = 0; Index < mNumberOfProcessors; ++Index) {\r
+ //\r
+ // To support stack switch, we need to re-construct GDT but not IDT.\r
+ //\r
+ if (Index == Bsp) {\r
+ GetGdtr (&Gdtr);\r
+ } else {\r
+ //\r
+ // AP might have different size of GDT from BSP.\r
+ //\r
+ MpInitLibStartupThisAP (GetGdtr, Index, NULL, 0, (VOID *)&Gdtr, NULL);\r
+ }\r
\r
- mMpSystemData.NumberOfProcessors = 1;\r
- mMpSystemData.NumberOfEnabledProcessors = 1;\r
+ //\r
+ // X64 needs only one TSS of current task working for all exceptions\r
+ // because of its IST feature. IA32 needs one TSS for each exception\r
+ // in addition to current task. Since AP is not supposed to allocate\r
+ // memory, we have to do it in BSP. To simplify the code, we allocate\r
+ // memory for IA32 case to cover both IA32 and X64 exception stack\r
+ // switch.\r
+ //\r
+ // Layout of memory to allocate for each processor:\r
+ // --------------------------------\r
+ // | Alignment | (just in case)\r
+ // --------------------------------\r
+ // | |\r
+ // | Original GDT |\r
+ // | |\r
+ // --------------------------------\r
+ // | Current task descriptor |\r
+ // --------------------------------\r
+ // | |\r
+ // | Exception task descriptors | X ExceptionNumber\r
+ // | |\r
+ // --------------------------------\r
+ // | Current task-state segment |\r
+ // --------------------------------\r
+ // | |\r
+ // | Exception task-state segment | X ExceptionNumber\r
+ // | |\r
+ // --------------------------------\r
+ //\r
+ OldGdtSize = Gdtr.Limit + 1;\r
+ EssData.Ia32.ExceptionTssDescSize = sizeof (IA32_TSS_DESCRIPTOR) *\r
+ (ExceptionNumber + 1);\r
+ EssData.Ia32.ExceptionTssSize = sizeof (IA32_TASK_STATE_SEGMENT) *\r
+ (ExceptionNumber + 1);\r
+ NewGdtSize = sizeof (IA32_TSS_DESCRIPTOR) +\r
+ OldGdtSize +\r
+ EssData.Ia32.ExceptionTssDescSize +\r
+ EssData.Ia32.ExceptionTssSize;\r
+\r
+ GdtBuffer = AllocateRuntimeZeroPool (NewGdtSize);\r
+ ASSERT (GdtBuffer != NULL);\r
\r
- mMpSystemData.CpuDatas = AllocateZeroPool (sizeof (CPU_DATA_BLOCK) * gMaxLogicalProcessorNumber);\r
- ASSERT(mMpSystemData.CpuDatas != NULL);\r
+ //\r
+ // Make sure GDT table alignment\r
+ //\r
+ EssData.Ia32.GdtTable = ALIGN_POINTER(GdtBuffer, sizeof (IA32_TSS_DESCRIPTOR));\r
+ NewGdtSize -= ((UINT8 *)EssData.Ia32.GdtTable - GdtBuffer);\r
+ EssData.Ia32.GdtTableSize = NewGdtSize;\r
+\r
+ EssData.Ia32.ExceptionTssDesc = ((UINT8 *)EssData.Ia32.GdtTable + OldGdtSize);\r
+ EssData.Ia32.ExceptionTss = ((UINT8 *)EssData.Ia32.GdtTable + OldGdtSize +\r
+ EssData.Ia32.ExceptionTssDescSize);\r
+\r
+ EssData.Ia32.KnownGoodStackTop = (UINTN)StackTop;\r
+ DEBUG ((DEBUG_INFO,\r
+ "Exception stack top[cpu%lu]: 0x%lX\n",\r
+ (UINT64)(UINTN)Index,\r
+ (UINT64)(UINTN)StackTop));\r
+\r
+ if (Index == Bsp) {\r
+ InitializeExceptionStackSwitchHandlers (&EssData);\r
+ } else {\r
+ MpInitLibStartupThisAP (\r
+ InitializeExceptionStackSwitchHandlers,\r
+ Index,\r
+ NULL,\r
+ 0,\r
+ (VOID *)&EssData,\r
+ NULL\r
+ );\r
+ }\r
\r
- for (ProcessorNumber = 0; ProcessorNumber < gMaxLogicalProcessorNumber; ProcessorNumber++) {\r
- CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];\r
- Status = gBS->CreateEvent (\r
- EVT_TIMER | EVT_NOTIFY_SIGNAL,\r
- TPL_CALLBACK,\r
- CheckThisAPStatus,\r
- (VOID *) CpuData,\r
- &CpuData->CheckThisAPEvent\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
+ StackTop -= NewStackSize;\r
}\r
-\r
- //\r
- // BSP\r
- //\r
- FillInProcessorInformation (TRUE, 0);\r
-\r
- return EFI_SUCCESS;\r
}\r
\r
/**\r
VOID\r
)\r
{\r
- gMaxLogicalProcessorNumber = (UINTN) PcdGet32 (PcdCpuMaxLogicalProcessorNumber);\r
- if (gMaxLogicalProcessorNumber < 1) {\r
- DEBUG ((DEBUG_ERROR, "Setting PcdCpuMaxLogicalProcessorNumber should be more than zero.\n"));\r
- return;\r
- }\r
-\r
- if (gMaxLogicalProcessorNumber == 1) {\r
- return;\r
- }\r
-\r
- gApStackSize = (UINTN) PcdGet32 (PcdCpuApStackSize);\r
- ASSERT ((gApStackSize & (SIZE_4KB - 1)) == 0);\r
-\r
- mApStackStart = AllocatePages (EFI_SIZE_TO_PAGES (gMaxLogicalProcessorNumber * gApStackSize));\r
- ASSERT (mApStackStart != NULL);\r
+ EFI_STATUS Status;\r
+ UINTN NumberOfProcessors;\r
+ UINTN NumberOfEnabledProcessors;\r
\r
//\r
- // the first buffer of stack size used for common stack, when the amount of AP\r
- // more than 1, we should never free the common stack which maybe used for AP reset.\r
+ // Wakeup APs to do initialization\r
//\r
- mCommonStack = mApStackStart;\r
- mTopOfApCommonStack = (UINT8*) mApStackStart + gApStackSize;\r
- mApStackStart = mTopOfApCommonStack;\r
+ Status = MpInitLibInitialize ();\r
+ ASSERT_EFI_ERROR (Status);\r
\r
- InitMpSystemData ();\r
+ MpInitLibGetNumberOfProcessors (&NumberOfProcessors, &NumberOfEnabledProcessors);\r
+ mNumberOfProcessors = NumberOfProcessors;\r
+ DEBUG ((DEBUG_INFO, "Detect CPU count: %d\n", mNumberOfProcessors));\r
\r
- if (mMpSystemData.NumberOfProcessors == 1) {\r
- FreePages (mCommonStack, EFI_SIZE_TO_PAGES (gMaxLogicalProcessorNumber * gApStackSize));\r
- return;\r
- }\r
+ //\r
+ // Initialize exception stack switch handlers for each logic processor.\r
+ //\r
+ InitializeMpExceptionStackSwitchHandlers ();\r
\r
- if (mMpSystemData.NumberOfProcessors < gMaxLogicalProcessorNumber) {\r
- FreePages (mApStackStart, EFI_SIZE_TO_PAGES (\r
- (gMaxLogicalProcessorNumber - mMpSystemData.NumberOfProcessors) *\r
- gApStackSize));\r
- }\r
+ //\r
+ // Update CPU healthy information from Guided HOB\r
+ //\r
+ CollectBistDataFromHob ();\r
+\r
+ Status = gBS->InstallMultipleProtocolInterfaces (\r
+ &mMpServiceHandle,\r
+ &gEfiMpServiceProtocolGuid, &mMpServicesTemplate,\r
+ NULL\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
}\r
+\r
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