X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=UefiCpuPkg%2FCpuDxe%2FCpuMp.c;h=56ba02615203ea560686a2c982b13608b92802f3;hp=f864de1f6f4db3eb31d5a5fb472a24826a014ecf;hb=147fd35c3e389ecd025dbfd243312bf5b22da7c9;hpb=4a50c2728540b9c487c9eccf19548f5322851212
diff --git a/UefiCpuPkg/CpuDxe/CpuMp.c b/UefiCpuPkg/CpuDxe/CpuMp.c
index f864de1f6f..56ba026152 100644
--- a/UefiCpuPkg/CpuDxe/CpuMp.c
+++ b/UefiCpuPkg/CpuDxe/CpuMp.c
@@ -1,7 +1,7 @@
/** @file
- CPU DXE Module.
+ CPU DXE Module to produce CPU MP Protocol.
- Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.
+ Copyright (c) 2008 - 2017, Intel Corporation. All rights reserved.
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -15,19 +15,8 @@
#include "CpuDxe.h"
#include "CpuMp.h"
-UINTN gMaxLogicalProcessorNumber;
-UINTN gApStackSize;
-UINTN gPollInterval = 100; // 100 microseconds
-
-MP_SYSTEM_DATA mMpSystemData;
-EFI_HANDLE mMpServiceHandle = NULL;
-
-VOID *mCommonStack = 0;
-VOID *mTopOfApCommonStack = 0;
-VOID *mApStackStart = 0;
-
-volatile BOOLEAN mAPsAlreadyInitFinished = FALSE;
-volatile BOOLEAN mStopCheckAllAPsStatus = TRUE;
+EFI_HANDLE mMpServiceHandle = NULL;
+UINTN mNumberOfProcessors = 1;
EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {
GetNumberOfProcessors,
@@ -39,322 +28,6 @@ EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {
WhoAmI
};
-/**
- Get Mp Service Lock.
-
- @param CpuData the pointer to CPU_DATA_BLOCK of specified processor
-
-**/
-VOID
-GetMpSpinLock (
- IN CPU_DATA_BLOCK *CpuData
- )
-{
- while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {
- CpuPause ();
- }
- CpuData->LockSelf = GetApicId ();
-}
-
-/**
- Release Mp Service Lock.
-
- @param CpuData the pointer to CPU_DATA_BLOCK of specified processor
-
-**/
-VOID
-ReleaseMpSpinLock (
- IN CPU_DATA_BLOCK *CpuData
- )
-{
- ReleaseSpinLock (&CpuData->CpuDataLock);
-}
-
-/**
- Check whether caller processor is BSP.
-
- @retval TRUE the caller is BSP
- @retval FALSE the caller is AP
-
-**/
-BOOLEAN
-IsBSP (
- VOID
- )
-{
- UINTN CpuIndex;
- CPU_DATA_BLOCK *CpuData;
-
- CpuData = NULL;
-
- WhoAmI (&mMpServicesTemplate, &CpuIndex);
- CpuData = &mMpSystemData.CpuDatas[CpuIndex];
-
- return CpuData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT ? TRUE : FALSE;
-}
-
-/**
- Get the Application Processors state.
-
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP
-
- @retval CPU_STATE the AP status
-
-**/
-CPU_STATE
-GetApState (
- IN CPU_DATA_BLOCK *CpuData
- )
-{
- CPU_STATE State;
-
- GetMpSpinLock (CpuData);
- State = CpuData->State;
- ReleaseMpSpinLock (CpuData);
-
- return State;
-}
-
-/**
- Set the Application Processors state.
-
- @param CpuData The pointer to CPU_DATA_BLOCK of specified AP
- @param State The AP status
-
-**/
-VOID
-SetApState (
- IN CPU_DATA_BLOCK *CpuData,
- IN CPU_STATE State
- )
-{
- GetMpSpinLock (CpuData);
- CpuData->State = State;
- ReleaseMpSpinLock (CpuData);
-}
-
-/**
- Set the Application Processor prepare to run a function specified
- by Params.
-
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP
- @param Procedure A pointer to the function to be run on enabled APs of the system
- @param ProcedureArgument Pointer to the optional parameter of the assigned function
-
-**/
-VOID
-SetApProcedure (
- IN CPU_DATA_BLOCK *CpuData,
- IN EFI_AP_PROCEDURE Procedure,
- IN VOID *ProcedureArgument
- )
-{
- GetMpSpinLock (CpuData);
- CpuData->Parameter = ProcedureArgument;
- CpuData->Procedure = Procedure;
- ReleaseMpSpinLock (CpuData);
-}
-
-/**
- Check the Application Processors Status whether contains the Flags.
-
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP
- @param Flags the StatusFlag describing in EFI_PROCESSOR_INFORMATION
-
- @retval TRUE the AP status includes the StatusFlag
- @retval FALSE the AP status excludes the StatusFlag
-
-**/
-BOOLEAN
-TestCpuStatusFlag (
- IN CPU_DATA_BLOCK *CpuData,
- IN UINT32 Flags
- )
-{
- UINT32 Ret;
-
- GetMpSpinLock (CpuData);
- Ret = CpuData->Info.StatusFlag & Flags;
- ReleaseMpSpinLock (CpuData);
-
- return !!(Ret);
-}
-
-/**
- Bitwise-Or of the Application Processors Status with the Flags.
-
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP
- @param Flags the StatusFlag describing in EFI_PROCESSOR_INFORMATION
-
-**/
-VOID
-CpuStatusFlagOr (
- IN CPU_DATA_BLOCK *CpuData,
- IN UINT32 Flags
- )
-{
- GetMpSpinLock (CpuData);
- CpuData->Info.StatusFlag |= Flags;
- ReleaseMpSpinLock (CpuData);
-}
-
-/**
- Bitwise-AndNot of the Application Processors Status with the Flags.
-
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP
- @param Flags the StatusFlag describing in EFI_PROCESSOR_INFORMATION
-
-**/
-VOID
-CpuStatusFlagAndNot (
- IN CPU_DATA_BLOCK *CpuData,
- IN UINT32 Flags
- )
-{
- GetMpSpinLock (CpuData);
- CpuData->Info.StatusFlag &= ~Flags;
- ReleaseMpSpinLock (CpuData);
-}
-
-/**
- Searches for the next blocking AP.
-
- Search for the next AP that is put in blocking state by single-threaded StartupAllAPs().
-
- @param NextNumber Pointer to the processor number of the next blocking AP.
-
- @retval EFI_SUCCESS The next blocking AP has been found.
- @retval EFI_NOT_FOUND No blocking AP exists.
-
-**/
-EFI_STATUS
-GetNextBlockedNumber (
- OUT UINTN *NextNumber
- )
-{
- UINTN Number;
- CPU_STATE CpuState;
- CPU_DATA_BLOCK *CpuData;
-
- for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {
- CpuData = &mMpSystemData.CpuDatas[Number];
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {
- //
- // Skip BSP
- //
- continue;
- }
-
- CpuState = GetApState (CpuData);
- if (CpuState == CpuStateBlocked) {
- *NextNumber = Number;
- return EFI_SUCCESS;
- }
- }
-
- return EFI_NOT_FOUND;
-}
-
-/**
- Check if the APs state are finished, and update them to idle state
- by StartupAllAPs().
-
-**/
-VOID
-CheckAndUpdateAllAPsToIdleState (
- VOID
- )
-{
- UINTN ProcessorNumber;
- UINTN NextNumber;
- CPU_DATA_BLOCK *CpuData;
- EFI_STATUS Status;
- CPU_STATE CpuState;
-
- for (ProcessorNumber = 0; ProcessorNumber < mMpSystemData.NumberOfProcessors; ProcessorNumber++) {
- CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {
- //
- // Skip BSP
- //
- continue;
- }
-
- if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {
- //
- // Skip Disabled processors
- //
- continue;
- }
-
- CpuState = GetApState (CpuData);
- if (CpuState == CpuStateFinished) {
- mMpSystemData.FinishCount++;
- if (mMpSystemData.SingleThread) {
- Status = GetNextBlockedNumber (&NextNumber);
- if (!EFI_ERROR (Status)) {
- SetApState (&mMpSystemData.CpuDatas[NextNumber], CpuStateReady);
- SetApProcedure (&mMpSystemData.CpuDatas[NextNumber],
- mMpSystemData.Procedure,
- mMpSystemData.ProcedureArgument);
- }
- }
-
- SetApState (CpuData, CpuStateIdle);
- }
- }
-}
-
-/**
- If the timeout expires before all APs returns from Procedure,
- we should forcibly terminate the executing AP and fill FailedList back
- by StartupAllAPs().
-
-**/
-VOID
-ResetAllFailedAPs (
- VOID
- )
-{
- CPU_DATA_BLOCK *CpuData;
- UINTN Number;
- CPU_STATE CpuState;
-
- if (mMpSystemData.FailedList != NULL) {
- *mMpSystemData.FailedList = AllocatePool ((mMpSystemData.StartCount - mMpSystemData.FinishCount + 1) * sizeof(UINTN));
- ASSERT (*mMpSystemData.FailedList != NULL);
- }
-
- for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {
- CpuData = &mMpSystemData.CpuDatas[Number];
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {
- //
- // Skip BSP
- //
- continue;
- }
-
- if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {
- //
- // Skip Disabled processors
- //
- continue;
- }
-
- CpuState = GetApState (CpuData);
- if (CpuState != CpuStateIdle) {
- if (mMpSystemData.FailedList != NULL) {
- (*mMpSystemData.FailedList)[mMpSystemData.FailedListIndex++] = Number;
- }
- ResetProcessorToIdleState (CpuData);
- }
- }
-
- if (mMpSystemData.FailedList != NULL) {
- (*mMpSystemData.FailedList)[mMpSystemData.FailedListIndex] = END_OF_CPU_LIST;
- }
-}
-
/**
This service retrieves the number of logical processor in the platform
and the number of those logical processors that are enabled on this boot.
@@ -403,13 +76,10 @@ GetNumberOfProcessors (
return EFI_INVALID_PARAMETER;
}
- if (!IsBSP ()) {
- return EFI_DEVICE_ERROR;
- }
-
- *NumberOfProcessors = mMpSystemData.NumberOfProcessors;
- *NumberOfEnabledProcessors = mMpSystemData.NumberOfEnabledProcessors;
- return EFI_SUCCESS;
+ return MpInitLibGetNumberOfProcessors (
+ NumberOfProcessors,
+ NumberOfEnabledProcessors
+ );
}
/**
@@ -446,20 +116,7 @@ GetProcessorInfo (
OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer
)
{
- if (ProcessorInfoBuffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (!IsBSP ()) {
- return EFI_DEVICE_ERROR;
- }
-
- if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {
- return EFI_NOT_FOUND;
- }
-
- CopyMem (ProcessorInfoBuffer, &mMpSystemData.CpuDatas[ProcessorNumber], sizeof (EFI_PROCESSOR_INFORMATION));
- return EFI_SUCCESS;
+ return MpInitLibGetProcessorInfo (ProcessorNumber, ProcessorInfoBuffer, NULL);
}
/**
@@ -610,141 +267,14 @@ StartupAllAPs (
OUT UINTN **FailedCpuList OPTIONAL
)
{
- EFI_STATUS Status;
- CPU_DATA_BLOCK *CpuData;
- UINTN Number;
- CPU_STATE APInitialState;
-
- CpuData = NULL;
-
- if (FailedCpuList != NULL) {
- *FailedCpuList = NULL;
- }
-
- if (!IsBSP ()) {
- return EFI_DEVICE_ERROR;
- }
-
- if (mMpSystemData.NumberOfProcessors == 1) {
- return EFI_NOT_STARTED;
- }
-
- if (Procedure == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // temporarily stop checkAllAPsStatus for avoid resource dead-lock.
- //
- mStopCheckAllAPsStatus = TRUE;
-
- for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {
- CpuData = &mMpSystemData.CpuDatas[Number];
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {
- //
- // Skip BSP
- //
- continue;
- }
-
- if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {
- //
- // Skip Disabled processors
- //
- continue;
- }
-
- if (GetApState (CpuData) != CpuStateIdle) {
- return EFI_NOT_READY;
- }
- }
-
- mMpSystemData.Procedure = Procedure;
- mMpSystemData.ProcedureArgument = ProcedureArgument;
- mMpSystemData.WaitEvent = WaitEvent;
- mMpSystemData.Timeout = TimeoutInMicroseconds;
- mMpSystemData.TimeoutActive = !!(TimeoutInMicroseconds);
- mMpSystemData.FinishCount = 0;
- mMpSystemData.StartCount = 0;
- mMpSystemData.SingleThread = SingleThread;
- mMpSystemData.FailedList = FailedCpuList;
- mMpSystemData.FailedListIndex = 0;
- APInitialState = CpuStateReady;
-
- for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {
- CpuData = &mMpSystemData.CpuDatas[Number];
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {
- //
- // Skip BSP
- //
- continue;
- }
-
- if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {
- //
- // Skip Disabled processors
- //
- continue;
- }
-
- //
- // Get APs prepared, and put failing APs into FailedCpuList
- // if "SingleThread", only 1 AP will put to ready state, other AP will be put to ready
- // state 1 by 1, until the previous 1 finished its task
- // if not "SingleThread", all APs are put to ready state from the beginning
- //
- if (GetApState (CpuData) == CpuStateIdle) {
- mMpSystemData.StartCount++;
-
- SetApState (CpuData, APInitialState);
-
- if (APInitialState == CpuStateReady) {
- SetApProcedure (CpuData, Procedure, ProcedureArgument);
- }
-
- if (SingleThread) {
- APInitialState = CpuStateBlocked;
- }
- }
- }
-
- mStopCheckAllAPsStatus = FALSE;
-
- if (WaitEvent != NULL) {
- //
- // non blocking
- //
- return EFI_SUCCESS;
- }
-
- //
- // Blocking temporarily stop CheckAllAPsStatus()
- //
- mStopCheckAllAPsStatus = TRUE;
-
- while (TRUE) {
- CheckAndUpdateAllAPsToIdleState ();
- if (mMpSystemData.FinishCount == mMpSystemData.StartCount) {
- Status = EFI_SUCCESS;
- goto Done;
- }
-
- //
- // task timeout
- //
- if (mMpSystemData.TimeoutActive && mMpSystemData.Timeout < 0) {
- ResetAllFailedAPs();
- Status = EFI_TIMEOUT;
- goto Done;
- }
-
- gBS->Stall (gPollInterval);
- mMpSystemData.Timeout -= gPollInterval;
- }
-
-Done:
-
- return Status;
+ return MpInitLibStartupAllAPs (
+ Procedure,
+ SingleThread,
+ WaitEvent,
+ TimeoutInMicroseconds,
+ ProcedureArgument,
+ FailedCpuList
+ );
}
/**
@@ -769,8 +299,8 @@ Done:
@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL
instance.
- @param[in] Procedure A pointer to the function to be run on
- enabled APs of the system. See type
+ @param[in] Procedure A pointer to the function to be run on the
+ designated AP of the system. See type
EFI_AP_PROCEDURE.
@param[in] ProcessorNumber The handle number of the AP. The range is
from 0 to the total number of logical
@@ -779,13 +309,13 @@ Done:
EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().
@param[in] WaitEvent The event created by the caller with CreateEvent()
service. If it is NULL, then execute in
- blocking mode. BSP waits until all APs finish
- or TimeoutInMicroseconds expires. If it's
+ blocking mode. BSP waits until this AP finish
+ or TimeoutInMicroSeconds expires. If it's
not NULL, then execute in non-blocking mode.
BSP requests the function specified by
- Procedure to be started on all the enabled
- APs, and go on executing immediately. If
- all return from Procedure or TimeoutInMicroseconds
+ Procedure to be started on this AP,
+ and go on executing immediately. If this AP
+ return from Procedure or TimeoutInMicroSeconds
expires, this event is signaled. The BSP
can use the CheckEvent() or WaitForEvent()
services to check the state of event. Type
@@ -793,20 +323,20 @@ Done:
the Unified Extensible Firmware Interface
Specification.
@param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
- APs to return from Procedure, either for
+ this AP to finish this Procedure, either for
blocking or non-blocking mode. Zero means
infinity. If the timeout expires before
- all APs return from Procedure, then Procedure
- on the failed APs is terminated. All enabled
- APs are available for next function assigned
+ this AP returns from Procedure, then Procedure
+ on the AP is terminated. The
+ AP is available for next function assigned
by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()
or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().
If the timeout expires in blocking mode,
BSP returns EFI_TIMEOUT. If the timeout
expires in non-blocking mode, WaitEvent
is signaled with SignalEvent().
- @param[in] ProcedureArgument The parameter passed into Procedure for
- all APs.
+ @param[in] ProcedureArgument The parameter passed into Procedure on the
+ specified AP.
@param[out] Finished If NULL, this parameter is ignored. In
blocking mode, this parameter is ignored.
In non-blocking mode, if AP returns from
@@ -845,78 +375,14 @@ StartupThisAP (
OUT BOOLEAN *Finished OPTIONAL
)
{
- CPU_DATA_BLOCK *CpuData;
-
- CpuData = NULL;
-
- if (Finished != NULL) {
- *Finished = FALSE;
- }
-
- if (!IsBSP ()) {
- return EFI_DEVICE_ERROR;
- }
-
- if (Procedure == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {
- return EFI_NOT_FOUND;
- }
-
- //
- // temporarily stop checkAllAPsStatus for avoid resource dead-lock.
- //
- mStopCheckAllAPsStatus = TRUE;
-
- CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT) ||
- !TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (GetApState (CpuData) != CpuStateIdle) {
- return EFI_NOT_READY;
- }
-
- SetApState (CpuData, CpuStateReady);
-
- SetApProcedure (CpuData, Procedure, ProcedureArgument);
-
- CpuData->Timeout = TimeoutInMicroseconds;
- CpuData->WaitEvent = WaitEvent;
- CpuData->TimeoutActive = !!(TimeoutInMicroseconds);
- CpuData->Finished = Finished;
-
- mStopCheckAllAPsStatus = FALSE;
-
- if (WaitEvent != NULL) {
- //
- // Non Blocking
- //
- return EFI_SUCCESS;
- }
-
- //
- // Blocking
- //
- while (TRUE) {
- if (GetApState (CpuData) == CpuStateFinished) {
- SetApState (CpuData, CpuStateIdle);
- break;
- }
-
- if (CpuData->TimeoutActive && CpuData->Timeout < 0) {
- ResetProcessorToIdleState (CpuData);
- return EFI_TIMEOUT;
- }
-
- gBS->Stall (gPollInterval);
- CpuData->Timeout -= gPollInterval;
- }
-
- return EFI_SUCCESS;
+ return MpInitLibStartupThisAP (
+ Procedure,
+ ProcessorNumber,
+ WaitEvent,
+ TimeoutInMicroseconds,
+ ProcedureArgument,
+ Finished
+ );
}
/**
@@ -946,7 +412,7 @@ StartupThisAP (
@retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to
this service returning.
@retval EFI_UNSUPPORTED Switching the BSP is not supported.
- @retval EFI_SUCCESS The calling processor is an AP.
+ @retval EFI_DEVICE_ERROR The calling processor is an AP.
@retval EFI_NOT_FOUND The processor with the handle specified by
ProcessorNumber does not exist.
@retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or
@@ -962,10 +428,7 @@ SwitchBSP (
IN BOOLEAN EnableOldBSP
)
{
- //
- // Current always return unsupported.
- //
- return EFI_UNSUPPORTED;
+ return MpInitLibSwitchBSP (ProcessorNumber, EnableOldBSP);
}
/**
@@ -984,8 +447,8 @@ SwitchBSP (
from this service, then EFI_UNSUPPORTED must be returned.
@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.
- @param[in] ProcessorNumber The handle number of AP that is to become the new
- BSP. The range is from 0 to the total number of
+ @param[in] ProcessorNumber The handle number of AP.
+ The range is from 0 to the total number of
logical processors minus 1. The total number of
logical processors can be retrieved by
EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().
@@ -1018,59 +481,7 @@ EnableDisableAP (
IN UINT32 *HealthFlag OPTIONAL
)
{
- CPU_DATA_BLOCK *CpuData;
- BOOLEAN TempStopCheckState;
-
- CpuData = NULL;
- TempStopCheckState = FALSE;
-
- if (!IsBSP ()) {
- return EFI_DEVICE_ERROR;
- }
-
- if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {
- return EFI_NOT_FOUND;
- }
-
- //
- // temporarily stop checkAllAPsStatus for initialize parameters.
- //
- if (!mStopCheckAllAPsStatus) {
- mStopCheckAllAPsStatus = TRUE;
- TempStopCheckState = TRUE;
- }
-
- CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];
- if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (GetApState (CpuData) != CpuStateIdle) {
- return EFI_UNSUPPORTED;
- }
-
- if (EnableAP) {
- if (!(TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT))) {
- mMpSystemData.NumberOfEnabledProcessors++;
- }
- CpuStatusFlagOr (CpuData, PROCESSOR_ENABLED_BIT);
- } else {
- if (TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {
- mMpSystemData.NumberOfEnabledProcessors--;
- }
- CpuStatusFlagAndNot (CpuData, PROCESSOR_ENABLED_BIT);
- }
-
- if (HealthFlag != NULL) {
- CpuStatusFlagAndNot (CpuData, (UINT32)~PROCESSOR_HEALTH_STATUS_BIT);
- CpuStatusFlagOr (CpuData, (*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT));
- }
-
- if (TempStopCheckState) {
- mStopCheckAllAPsStatus = FALSE;
- }
-
- return EFI_SUCCESS;
+ return MpInitLibEnableDisableAP (ProcessorNumber, EnableAP, HealthFlag);
}
/**
@@ -1086,8 +497,8 @@ EnableDisableAP (
ProcessorNumber, and EFI_SUCCESS is returned.
@param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.
- @param[out] ProcessorNumber The handle number of AP that is to become the new
- BSP. The range is from 0 to the total number of
+ @param[out] ProcessorNumber Pointer to the handle number of AP.
+ The range is from 0 to the total number of
logical processors minus 1. The total number of
logical processors can be retrieved by
EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().
@@ -1104,420 +515,308 @@ WhoAmI (
OUT UINTN *ProcessorNumber
)
{
- UINTN Index;
- UINT32 ProcessorId;
-
- if (ProcessorNumber == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- ProcessorId = GetApicId ();
- for (Index = 0; Index < mMpSystemData.NumberOfProcessors; Index++) {
- if (mMpSystemData.CpuDatas[Index].Info.ProcessorId == ProcessorId) {
- break;
- }
- }
-
- *ProcessorNumber = Index;
- return EFI_SUCCESS;
-}
-
-/**
- Terminate AP's task and set it to idle state.
-
- This function terminates AP's task due to timeout by sending INIT-SIPI,
- and sends it to idle state.
-
- @param CpuData the pointer to CPU_DATA_BLOCK of specified AP
-
-**/
-VOID
-ResetProcessorToIdleState (
- IN CPU_DATA_BLOCK *CpuData
- )
-{
- ResetApStackless ((UINT32)CpuData->Info.ProcessorId);
+ return MpInitLibWhoAmI (ProcessorNumber);;
}
/**
- Application Processors do loop routine
- after switch to its own stack.
+ Collects BIST data from HOB.
- @param Context1 A pointer to the context to pass into the function.
- @param Context2 A pointer to the context to pass into the function.
+ This function collects BIST data from HOB built from Sec Platform Information
+ PPI or SEC Platform Information2 PPI.
**/
VOID
-ProcessorToIdleState (
- IN VOID *Context1, OPTIONAL
- IN VOID *Context2 OPTIONAL
+CollectBistDataFromHob (
+ VOID
)
{
- UINTN ProcessorNumber;
- CPU_DATA_BLOCK *CpuData;
- EFI_AP_PROCEDURE Procedure;
- VOID *ProcedureArgument;
-
- AsmApDoneWithCommonStack ();
-
- while (!mAPsAlreadyInitFinished) {
- CpuPause ();
- }
-
- WhoAmI (&mMpServicesTemplate, &ProcessorNumber);
- CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];
+ EFI_HOB_GUID_TYPE *GuidHob;
+ EFI_SEC_PLATFORM_INFORMATION_RECORD2 *SecPlatformInformation2;
+ EFI_SEC_PLATFORM_INFORMATION_RECORD *SecPlatformInformation;
+ UINTN NumberOfData;
+ EFI_SEC_PLATFORM_INFORMATION_CPU *CpuInstance;
+ EFI_SEC_PLATFORM_INFORMATION_CPU BspCpuInstance;
+ UINTN ProcessorNumber;
+ EFI_PROCESSOR_INFORMATION ProcessorInfo;
+ EFI_HEALTH_FLAGS BistData;
+ UINTN CpuInstanceNumber;
+
+ SecPlatformInformation2 = NULL;
+ SecPlatformInformation = NULL;
//
- // Avoid forcibly reset AP caused the AP got lock not release.
+ // Get gEfiSecPlatformInformation2PpiGuid Guided HOB firstly
//
- if (CpuData->LockSelf == (INTN) GetApicId ()) {
- ReleaseSpinLock (&CpuData->CpuDataLock);
+ GuidHob = GetFirstGuidHob (&gEfiSecPlatformInformation2PpiGuid);
+ if (GuidHob != NULL) {
+ //
+ // Sec Platform Information2 PPI includes BSP/APs' BIST information
+ //
+ SecPlatformInformation2 = GET_GUID_HOB_DATA (GuidHob);
+ NumberOfData = SecPlatformInformation2->NumberOfCpus;
+ CpuInstance = SecPlatformInformation2->CpuInstance;
+ } else {
+ //
+ // Otherwise, get gEfiSecPlatformInformationPpiGuid Guided HOB
+ //
+ GuidHob = GetFirstGuidHob (&gEfiSecPlatformInformationPpiGuid);
+ if (GuidHob != NULL) {
+ SecPlatformInformation = GET_GUID_HOB_DATA (GuidHob);
+ NumberOfData = 1;
+ //
+ // SEC Platform Information only includes BSP's BIST information
+ // does not have BSP's APIC ID
+ //
+ BspCpuInstance.CpuLocation = GetApicId ();
+ BspCpuInstance.InfoRecord.IA32HealthFlags.Uint32 = SecPlatformInformation->IA32HealthFlags.Uint32;
+ CpuInstance = &BspCpuInstance;
+ } else {
+ DEBUG ((DEBUG_INFO, "Does not find any HOB stored CPU BIST information!\n"));
+ //
+ // Does not find any HOB stored BIST information
+ //
+ return;
+ }
}
- //
- // Avoid forcibly reset AP caused the AP State is not updated.
- //
- GetMpSpinLock (CpuData);
- CpuData->State = CpuStateIdle;
- CpuData->Procedure = NULL;
- ReleaseMpSpinLock (CpuData);
-
- while (TRUE) {
- GetMpSpinLock (CpuData);
- ProcedureArgument = CpuData->Parameter;
- Procedure = CpuData->Procedure;
- ReleaseMpSpinLock (CpuData);
-
- if (Procedure != NULL) {
- Procedure (ProcedureArgument);
-
- GetMpSpinLock (CpuData);
- CpuData->Procedure = NULL;
- CpuData->State = CpuStateFinished;
- ReleaseMpSpinLock (CpuData);
+ for (ProcessorNumber = 0; ProcessorNumber < mNumberOfProcessors; ProcessorNumber++) {
+ MpInitLibGetProcessorInfo (ProcessorNumber, &ProcessorInfo, &BistData);
+ for (CpuInstanceNumber = 0; CpuInstanceNumber < NumberOfData; CpuInstanceNumber++) {
+ if (ProcessorInfo.ProcessorId == CpuInstance[CpuInstanceNumber].CpuLocation) {
+ //
+ // Update CPU health status for MP Services Protocol according to BIST data.
+ //
+ BistData = CpuInstance[CpuInstanceNumber].InfoRecord.IA32HealthFlags;
+ }
+ }
+ if (BistData.Uint32 != 0) {
+ //
+ // Report Status Code that self test is failed
+ //
+ REPORT_STATUS_CODE (
+ EFI_ERROR_CODE | EFI_ERROR_MAJOR,
+ (EFI_COMPUTING_UNIT_HOST_PROCESSOR | EFI_CU_HP_EC_SELF_TEST)
+ );
}
-
- CpuPause ();
}
-
- CpuSleep ();
- CpuDeadLoop ();
}
/**
- Checks AP' status periodically.
+ Get GDT register value.
- This function is triggerred by timer perodically to check the
- state of AP forStartupThisAP() executed in non-blocking mode.
+ This function is mainly for AP purpose because AP may have different GDT
+ table than BSP.
- @param Event Event triggered.
- @param Context Parameter passed with the event.
+ @param[in,out] Buffer The pointer to private data buffer.
**/
VOID
EFIAPI
-CheckThisAPStatus (
- IN EFI_EVENT Event,
- IN VOID *Context
+GetGdtr (
+ IN OUT VOID *Buffer
)
{
- CPU_DATA_BLOCK *CpuData;
- CPU_STATE CpuState;
-
- CpuData = (CPU_DATA_BLOCK *) Context;
- if (CpuData->TimeoutActive) {
- CpuData->Timeout -= gPollInterval;
- }
-
- CpuState = GetApState (CpuData);
-
- if (CpuState == CpuStateFinished) {
- if (CpuData->Finished) {
- *CpuData->Finished = TRUE;
- }
- SetApState (CpuData, CpuStateIdle);
- goto out;
- }
-
- if (CpuData->TimeoutActive && CpuData->Timeout < 0) {
- if (CpuState != CpuStateIdle &&
- CpuData->Finished) {
- *CpuData->Finished = FALSE;
- }
- ResetProcessorToIdleState (CpuData);
- goto out;
- }
-
- return;
-
-out:
- CpuData->TimeoutActive = FALSE;
- gBS->SignalEvent (CpuData->WaitEvent);
- CpuData->WaitEvent = NULL;
+ AsmReadGdtr ((IA32_DESCRIPTOR *)Buffer);
}
/**
- Checks APs' status periodically.
+ Initializes CPU exceptions handlers for the sake of stack switch requirement.
- This function is triggerred by timer perodically to check the
- state of APs for StartupAllAPs() executed in non-blocking mode.
+ This function is a wrapper of InitializeCpuExceptionHandlersEx. It's mainly
+ for the sake of AP's init because of EFI_AP_PROCEDURE API requirement.
- @param Event Event triggered.
- @param Context Parameter passed with the event.
+ @param[in,out] Buffer The pointer to private data buffer.
**/
VOID
EFIAPI
-CheckAllAPsStatus (
- IN EFI_EVENT Event,
- IN VOID *Context
+InitializeExceptionStackSwitchHandlers (
+ IN OUT VOID *Buffer
)
{
- CPU_DATA_BLOCK *CpuData;
- UINTN Number;
- EFI_STATUS Status;
-
- if (mMpSystemData.TimeoutActive) {
- mMpSystemData.Timeout -= gPollInterval;
- }
-
- if (mStopCheckAllAPsStatus) {
- return;
- }
+ CPU_EXCEPTION_INIT_DATA *EssData;
+ IA32_DESCRIPTOR Idtr;
+ EFI_STATUS Status;
+ EssData = Buffer;
//
- // avoid next timer enter.
+ // We don't plan to replace IDT table with a new one, but we should not assume
+ // the AP's IDT is the same as BSP's IDT either.
//
- Status = gBS->SetTimer (
- mMpSystemData.CheckAllAPsEvent,
- TimerCancel,
- 0
- );
- ASSERT_EFI_ERROR (Status);
-
- if (mMpSystemData.WaitEvent != NULL) {
- CheckAndUpdateAllAPsToIdleState ();
- //
- // task timeout
- //
- if (mMpSystemData.TimeoutActive && mMpSystemData.Timeout < 0) {
- ResetAllFailedAPs();
- //
- // force exit
- //
- mMpSystemData.FinishCount = mMpSystemData.StartCount;
- }
-
- if (mMpSystemData.FinishCount != mMpSystemData.StartCount) {
- goto EXIT;
- }
-
- mMpSystemData.TimeoutActive = FALSE;
- gBS->SignalEvent (mMpSystemData.WaitEvent);
- mMpSystemData.WaitEvent = NULL;
- mStopCheckAllAPsStatus = TRUE;
-
- goto EXIT;
- }
-
- //
- // check each AP status for StartupThisAP
- //
- for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {
- CpuData = &mMpSystemData.CpuDatas[Number];
- if (CpuData->WaitEvent) {
- CheckThisAPStatus (NULL, (VOID *)CpuData);
- }
- }
-
-EXIT:
- Status = gBS->SetTimer (
- mMpSystemData.CheckAllAPsEvent,
- TimerPeriodic,
- EFI_TIMER_PERIOD_MICROSECONDS (100)
- );
+ AsmReadIdtr (&Idtr);
+ EssData->Ia32.IdtTable = (VOID *)Idtr.Base;
+ EssData->Ia32.IdtTableSize = Idtr.Limit + 1;
+ Status = InitializeCpuExceptionHandlersEx (NULL, EssData);
ASSERT_EFI_ERROR (Status);
}
/**
- Application Processor C code entry point.
+ Initializes MP exceptions handlers for the sake of stack switch requirement.
+
+ This function will allocate required resources required to setup stack switch
+ and pass them through CPU_EXCEPTION_INIT_DATA to each logic processor.
**/
VOID
-EFIAPI
-ApEntryPointInC (
+InitializeMpExceptionStackSwitchHandlers (
VOID
)
{
- VOID* TopOfApStack;
- UINTN ProcessorNumber;
+ UINTN Index;
+ UINTN Bsp;
+ UINTN ExceptionNumber;
+ UINTN OldGdtSize;
+ UINTN NewGdtSize;
+ UINTN NewStackSize;
+ IA32_DESCRIPTOR Gdtr;
+ CPU_EXCEPTION_INIT_DATA EssData;
+ UINT8 *GdtBuffer;
+ UINT8 *StackTop;
+
+ if (!PcdGetBool (PcdCpuStackGuard)) {
+ return;
+ }
- if (!mAPsAlreadyInitFinished) {
- FillInProcessorInformation (FALSE, mMpSystemData.NumberOfProcessors);
- TopOfApStack = (UINT8*)mApStackStart + gApStackSize;
- mApStackStart = TopOfApStack;
+ ExceptionNumber = FixedPcdGetSize (PcdCpuStackSwitchExceptionList);
+ NewStackSize = FixedPcdGet32 (PcdCpuKnownGoodStackSize) * ExceptionNumber;
+ StackTop = AllocateRuntimeZeroPool (NewStackSize * mNumberOfProcessors);
+ ASSERT (StackTop != NULL);
+ StackTop += NewStackSize * mNumberOfProcessors;
+
+ //
+ // The default exception handlers must have been initialized. Let's just skip
+ // it in this method.
+ //
+ EssData.Ia32.Revision = CPU_EXCEPTION_INIT_DATA_REV;
+ EssData.Ia32.InitDefaultHandlers = FALSE;
+
+ EssData.Ia32.StackSwitchExceptions = FixedPcdGetPtr(PcdCpuStackSwitchExceptionList);
+ EssData.Ia32.StackSwitchExceptionNumber = ExceptionNumber;
+ EssData.Ia32.KnownGoodStackSize = FixedPcdGet32(PcdCpuKnownGoodStackSize);
+
+ MpInitLibWhoAmI (&Bsp);
+ for (Index = 0; Index < mNumberOfProcessors; ++Index) {
//
- // Store the Stack address, when reset the AP, We can found the original address.
+ // To support stack switch, we need to re-construct GDT but not IDT.
//
- mMpSystemData.CpuDatas[mMpSystemData.NumberOfProcessors].TopOfStack = TopOfApStack;
- mMpSystemData.NumberOfProcessors++;
- mMpSystemData.NumberOfEnabledProcessors++;
- } else {
- WhoAmI (&mMpServicesTemplate, &ProcessorNumber);
+ if (Index == Bsp) {
+ GetGdtr (&Gdtr);
+ } else {
+ //
+ // AP might have different size of GDT from BSP.
+ //
+ MpInitLibStartupThisAP (GetGdtr, Index, NULL, 0, (VOID *)&Gdtr, NULL);
+ }
+
//
- // Get the original stack address.
+ // X64 needs only one TSS of current task working for all exceptions
+ // because of its IST feature. IA32 needs one TSS for each exception
+ // in addition to current task. Since AP is not supposed to allocate
+ // memory, we have to do it in BSP. To simplify the code, we allocate
+ // memory for IA32 case to cover both IA32 and X64 exception stack
+ // switch.
//
- TopOfApStack = mMpSystemData.CpuDatas[ProcessorNumber].TopOfStack;
- }
-
- SwitchStack (
- (SWITCH_STACK_ENTRY_POINT)(UINTN)ProcessorToIdleState,
- NULL,
- NULL,
- TopOfApStack);
-}
-
-/**
- This function is called by all processors (both BSP and AP) once and collects MP related data.
-
- @param Bsp TRUE if the CPU is BSP
- @param ProcessorNumber The specific processor number
+ // Layout of memory to allocate for each processor:
+ // --------------------------------
+ // | Alignment | (just in case)
+ // --------------------------------
+ // | |
+ // | Original GDT |
+ // | |
+ // --------------------------------
+ // | Current task descriptor |
+ // --------------------------------
+ // | |
+ // | Exception task descriptors | X ExceptionNumber
+ // | |
+ // --------------------------------
+ // | Current task-state segment |
+ // --------------------------------
+ // | |
+ // | Exception task-state segment | X ExceptionNumber
+ // | |
+ // --------------------------------
+ //
+ OldGdtSize = Gdtr.Limit + 1;
+ EssData.Ia32.ExceptionTssDescSize = sizeof (IA32_TSS_DESCRIPTOR) *
+ (ExceptionNumber + 1);
+ EssData.Ia32.ExceptionTssSize = sizeof (IA32_TASK_STATE_SEGMENT) *
+ (ExceptionNumber + 1);
+ NewGdtSize = sizeof (IA32_TSS_DESCRIPTOR) +
+ OldGdtSize +
+ EssData.Ia32.ExceptionTssDescSize +
+ EssData.Ia32.ExceptionTssSize;
+
+ GdtBuffer = AllocateRuntimeZeroPool (NewGdtSize);
+ ASSERT (GdtBuffer != NULL);
- @retval EFI_SUCCESS Data for the processor collected and filled in
+ //
+ // Make sure GDT table alignment
+ //
+ EssData.Ia32.GdtTable = ALIGN_POINTER(GdtBuffer, sizeof (IA32_TSS_DESCRIPTOR));
+ NewGdtSize -= ((UINT8 *)EssData.Ia32.GdtTable - GdtBuffer);
+ EssData.Ia32.GdtTableSize = NewGdtSize;
+
+ EssData.Ia32.ExceptionTssDesc = ((UINT8 *)EssData.Ia32.GdtTable + OldGdtSize);
+ EssData.Ia32.ExceptionTss = ((UINT8 *)EssData.Ia32.GdtTable + OldGdtSize +
+ EssData.Ia32.ExceptionTssDescSize);
+
+ EssData.Ia32.KnownGoodStackTop = (UINTN)StackTop;
+ DEBUG ((DEBUG_INFO,
+ "Exception stack top[cpu%lu]: 0x%lX\n",
+ (UINT64)(UINTN)Index,
+ (UINT64)(UINTN)StackTop));
+
+ if (Index == Bsp) {
+ InitializeExceptionStackSwitchHandlers (&EssData);
+ } else {
+ MpInitLibStartupThisAP (
+ InitializeExceptionStackSwitchHandlers,
+ Index,
+ NULL,
+ 0,
+ (VOID *)&EssData,
+ NULL
+ );
+ }
-**/
-EFI_STATUS
-FillInProcessorInformation (
- IN BOOLEAN Bsp,
- IN UINTN ProcessorNumber
- )
-{
- CPU_DATA_BLOCK *CpuData;
- UINT32 ProcessorId;
-
- CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];
- ProcessorId = GetApicId ();
- CpuData->Info.ProcessorId = ProcessorId;
- CpuData->Info.StatusFlag = PROCESSOR_ENABLED_BIT | PROCESSOR_HEALTH_STATUS_BIT;
- if (Bsp) {
- CpuData->Info.StatusFlag |= PROCESSOR_AS_BSP_BIT;
+ StackTop -= NewStackSize;
}
- CpuData->Info.Location.Package = ProcessorId;
- CpuData->Info.Location.Core = 0;
- CpuData->Info.Location.Thread = 0;
- CpuData->State = Bsp ? CpuStateBuzy : CpuStateIdle;
-
- CpuData->Procedure = NULL;
- CpuData->Parameter = NULL;
- InitializeSpinLock (&CpuData->CpuDataLock);
- CpuData->LockSelf = -1;
-
- return EFI_SUCCESS;
}
/**
- Prepare the System Data.
-
- @retval EFI_SUCCESS the System Data finished initilization.
+ Initialize Multi-processor support.
**/
-EFI_STATUS
-InitMpSystemData (
+VOID
+InitializeMpSupport (
VOID
)
{
EFI_STATUS Status;
-
- ZeroMem (&mMpSystemData, sizeof (MP_SYSTEM_DATA));
-
- mMpSystemData.NumberOfProcessors = 1;
- mMpSystemData.NumberOfEnabledProcessors = 1;
-
- mMpSystemData.CpuDatas = AllocateZeroPool (sizeof (CPU_DATA_BLOCK) * gMaxLogicalProcessorNumber);
- ASSERT(mMpSystemData.CpuDatas != NULL);
-
- Status = gBS->CreateEvent (
- EVT_TIMER | EVT_NOTIFY_SIGNAL,
- TPL_CALLBACK,
- CheckAllAPsStatus,
- NULL,
- &mMpSystemData.CheckAllAPsEvent
- );
- ASSERT_EFI_ERROR (Status);
+ UINTN NumberOfProcessors;
+ UINTN NumberOfEnabledProcessors;
//
- // Set timer to check all APs status.
+ // Wakeup APs to do initialization
//
- Status = gBS->SetTimer (
- mMpSystemData.CheckAllAPsEvent,
- TimerPeriodic,
- EFI_TIMER_PERIOD_MICROSECONDS (100)
- );
+ Status = MpInitLibInitialize ();
ASSERT_EFI_ERROR (Status);
+ MpInitLibGetNumberOfProcessors (&NumberOfProcessors, &NumberOfEnabledProcessors);
+ mNumberOfProcessors = NumberOfProcessors;
+ DEBUG ((DEBUG_INFO, "Detect CPU count: %d\n", mNumberOfProcessors));
+
//
- // BSP
+ // Initialize exception stack switch handlers for each logic processor.
//
- FillInProcessorInformation (TRUE, 0);
-
- return EFI_SUCCESS;
-}
-
-/**
- Initialize Multi-processor support.
-
-**/
-VOID
-InitializeMpSupport (
- VOID
- )
-{
- EFI_STATUS Status;
-
- gMaxLogicalProcessorNumber = (UINTN) PcdGet32 (PcdCpuMaxLogicalProcessorNumber);
- if (gMaxLogicalProcessorNumber < 1) {
- DEBUG ((DEBUG_ERROR, "Setting PcdCpuMaxLogicalProcessorNumber should be more than zero.\n"));
- return;
- }
-
- if (gMaxLogicalProcessorNumber == 1) {
- return;
- }
-
- gApStackSize = (UINTN) PcdGet32 (PcdCpuApStackSize);
- ASSERT ((gApStackSize & (SIZE_4KB - 1)) == 0);
-
- mApStackStart = AllocatePages (EFI_SIZE_TO_PAGES (gMaxLogicalProcessorNumber * gApStackSize));
- ASSERT (mApStackStart != NULL);
+ InitializeMpExceptionStackSwitchHandlers ();
//
- // the first buffer of stack size used for common stack, when the amount of AP
- // more than 1, we should never free the common stack which maybe used for AP reset.
+ // Update CPU healthy information from Guided HOB
//
- mCommonStack = mApStackStart;
- mTopOfApCommonStack = (UINT8*) mApStackStart + gApStackSize;
- mApStackStart = mTopOfApCommonStack;
-
- InitMpSystemData ();
-
- PrepareAPStartupCode ();
-
- StartApsStackless ();
-
- DEBUG ((DEBUG_INFO, "Detect CPU count: %d\n", mMpSystemData.NumberOfProcessors));
- if (mMpSystemData.NumberOfProcessors == 1) {
- FreeApStartupCode ();
- FreePages (mCommonStack, EFI_SIZE_TO_PAGES (gMaxLogicalProcessorNumber * gApStackSize));
- return;
- }
-
- mMpSystemData.CpuDatas = ReallocatePool (
- sizeof (CPU_DATA_BLOCK) * gMaxLogicalProcessorNumber,
- sizeof (CPU_DATA_BLOCK) * mMpSystemData.NumberOfProcessors,
- mMpSystemData.CpuDatas);
-
- mAPsAlreadyInitFinished = TRUE;
+ CollectBistDataFromHob ();
Status = gBS->InstallMultipleProtocolInterfaces (
&mMpServiceHandle,
@@ -1525,10 +824,5 @@ InitializeMpSupport (
NULL
);
ASSERT_EFI_ERROR (Status);
-
- if (mMpSystemData.NumberOfProcessors < gMaxLogicalProcessorNumber) {
- FreePages (mApStackStart, EFI_SIZE_TO_PAGES (
- (gMaxLogicalProcessorNumber - mMpSystemData.NumberOfProcessors) *
- gApStackSize));
- }
}
+