UefiCpuPkg/CpuDxe: introduce ResetApStackless()
If timeout expires before AP returns from Procedure, the AP should be terminated, we introduce ResetApStackLess() to send init IPI to let AP exit Procedurce and re-available. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com> Reviewed-by: Jeff Fan <jeff.fan@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16366 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -25,6 +25,7 @@ VOID *mCommonStack = 0;
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VOID *mTopOfApCommonStack = 0;
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VOID *mApStackStart = 0;
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BOOLEAN mAPsAlreadyInitFinished = FALSE;
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volatile BOOLEAN mStopCheckAllAPsStatus = TRUE;
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EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {
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@@ -1112,6 +1113,7 @@ ResetProcessorToIdleState (
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IN CPU_DATA_BLOCK *CpuData
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)
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{
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ResetApStackless ((UINT32)CpuData->Info.ProcessorId);
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}
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/**
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@@ -1138,6 +1140,14 @@ ProcessorToIdleState (
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AsmApDoneWithCommonStack ();
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//
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// Avoid forcibly reset AP caused the AP State is not updated.
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//
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GetMpSpinLock (CpuData);
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CpuData->State = CpuStateIdle;
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CpuData->Procedure = NULL;
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ReleaseMpSpinLock (CpuData);
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while (TRUE) {
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GetMpSpinLock (CpuData);
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ProcedureArgument = CpuData->Parameter;
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@@ -1319,13 +1329,27 @@ ApEntryPointInC (
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VOID
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)
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{
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VOID* TopOfApStack;
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VOID* TopOfApStack;
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UINTN ProcessorNumber;
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FillInProcessorInformation (FALSE, mMpSystemData.NumberOfProcessors);
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TopOfApStack = (UINT8*)mApStackStart + gApStackSize;
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mApStackStart = TopOfApStack;
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if (!mAPsAlreadyInitFinished) {
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FillInProcessorInformation (FALSE, mMpSystemData.NumberOfProcessors);
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TopOfApStack = (UINT8*)mApStackStart + gApStackSize;
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mApStackStart = TopOfApStack;
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mMpSystemData.NumberOfProcessors++;
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//
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// Store the Stack address, when reset the AP, We can found the original address.
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//
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mMpSystemData.CpuDatas[mMpSystemData.NumberOfProcessors].TopOfStack = TopOfApStack;
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mMpSystemData.NumberOfProcessors++;
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mMpSystemData.NumberOfEnabledProcessors++;
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} else {
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WhoAmI (&mMpServicesTemplate, &ProcessorNumber);
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//
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// Get the original stack address.
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//
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TopOfApStack = mMpSystemData.CpuDatas[ProcessorNumber].TopOfStack;
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}
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SwitchStack (
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(SWITCH_STACK_ENTRY_POINT)(UINTN)ProcessorToIdleState,
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@@ -1462,6 +1486,8 @@ InitializeMpSupport (
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return;
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}
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mAPsAlreadyInitFinished = TRUE;
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if (mMpSystemData.NumberOfProcessors < gMaxLogicalProcessorNumber) {
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FreePages (mApStackStart, EFI_SIZE_TO_PAGES (
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(gMaxLogicalProcessorNumber - mMpSystemData.NumberOfProcessors) *
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