diff options
Diffstat (limited to 'UefiCpuPkg/CpuMpPei/CpuMpPei.c')
| -rw-r--r-- | UefiCpuPkg/CpuMpPei/CpuMpPei.c | 837 |
1 files changed, 0 insertions, 837 deletions
diff --git a/UefiCpuPkg/CpuMpPei/CpuMpPei.c b/UefiCpuPkg/CpuMpPei/CpuMpPei.c index b5f8887007..a36adf6345 100644 --- a/UefiCpuPkg/CpuMpPei/CpuMpPei.c +++ b/UefiCpuPkg/CpuMpPei/CpuMpPei.c @@ -13,843 +13,6 @@ **/
#include "CpuMpPei.h"
-
-GLOBAL_REMOVE_IF_UNREFERENCED EFI_PEI_NOTIFY_DESCRIPTOR mNotifyList = {
- (EFI_PEI_PPI_DESCRIPTOR_NOTIFY_CALLBACK | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
- &gEfiEndOfPeiSignalPpiGuid,
- CpuMpEndOfPeiCallback
-};
-
-/**
- Sort the APIC ID of all processors.
-
- This function sorts the APIC ID of all processors so that processor number is
- assigned in the ascending order of APIC ID which eases MP debugging.
-
- @param PeiCpuMpData Pointer to PEI CPU MP Data
-**/
-STATIC
-VOID
-SortApicId (
- IN PEI_CPU_MP_DATA *PeiCpuMpData
- )
-{
- UINTN Index1;
- UINTN Index2;
- UINTN Index3;
- UINT32 ApicId;
- PEI_CPU_DATA CpuData;
- UINT32 ApCount;
-
- ApCount = PeiCpuMpData->CpuCount - 1;
-
- if (ApCount != 0) {
- for (Index1 = 0; Index1 < ApCount; Index1++) {
- Index3 = Index1;
- //
- // Sort key is the hardware default APIC ID
- //
- ApicId = PeiCpuMpData->CpuData[Index1].ApicId;
- for (Index2 = Index1 + 1; Index2 <= ApCount; Index2++) {
- if (ApicId > PeiCpuMpData->CpuData[Index2].ApicId) {
- Index3 = Index2;
- ApicId = PeiCpuMpData->CpuData[Index2].ApicId;
- }
- }
- if (Index3 != Index1) {
- CopyMem (&CpuData, &PeiCpuMpData->CpuData[Index3], sizeof (PEI_CPU_DATA));
- CopyMem (
- &PeiCpuMpData->CpuData[Index3],
- &PeiCpuMpData->CpuData[Index1],
- sizeof (PEI_CPU_DATA)
- );
- CopyMem (&PeiCpuMpData->CpuData[Index1], &CpuData, sizeof (PEI_CPU_DATA));
- }
- }
-
- //
- // Get the processor number for the BSP
- //
- ApicId = GetInitialApicId ();
- for (Index1 = 0; Index1 < PeiCpuMpData->CpuCount; Index1++) {
- if (PeiCpuMpData->CpuData[Index1].ApicId == ApicId) {
- PeiCpuMpData->BspNumber = (UINT32) Index1;
- break;
- }
- }
- }
-}
-
-/**
- Enable x2APIC mode on APs.
-
- @param Buffer Pointer to private data buffer.
-**/
-STATIC
-VOID
-EFIAPI
-ApFuncEnableX2Apic (
- IN OUT VOID *Buffer
- )
-{
- SetApicMode (LOCAL_APIC_MODE_X2APIC);
-}
-
-/**
- Get AP loop mode.
-
- @param MonitorFilterSize Returns the largest monitor-line size in bytes.
-
- @return The AP loop mode.
-**/
-STATIC
-UINT8
-GetApLoopMode (
- OUT UINT16 *MonitorFilterSize
- )
-{
- UINT8 ApLoopMode;
- UINT32 RegEbx;
- UINT32 RegEcx;
- UINT32 RegEdx;
-
- ASSERT (MonitorFilterSize != NULL);
-
- ApLoopMode = PcdGet8 (PcdCpuApLoopMode);
- ASSERT (ApLoopMode >= ApInHltLoop && ApLoopMode <= ApInRunLoop);
- if (ApLoopMode == ApInMwaitLoop) {
- AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, &RegEcx, NULL);
- if ((RegEcx & BIT3) == 0) {
- //
- // If processor does not support MONITOR/MWAIT feature
- // by CPUID.[EAX=01H]:ECX.BIT3, force AP in Hlt-loop mode
- //
- ApLoopMode = ApInHltLoop;
- }
- }
-
- if (ApLoopMode == ApInHltLoop) {
- *MonitorFilterSize = 0;
- } else if (ApLoopMode == ApInRunLoop) {
- *MonitorFilterSize = sizeof (UINT32);
- } else if (ApLoopMode == ApInMwaitLoop) {
- //
- // CPUID.[EAX=05H]:EBX.BIT0-15: Largest monitor-line size in bytes
- // CPUID.[EAX=05H].EDX: C-states supported using MWAIT
- //
- AsmCpuid (CPUID_MONITOR_MWAIT, NULL, &RegEbx, NULL, &RegEdx);
- *MonitorFilterSize = RegEbx & 0xFFFF;
- }
-
- return ApLoopMode;
-}
-
-/**
- Get CPU MP Data pointer from the Guided HOB.
-
- @return Pointer to Pointer to PEI CPU MP Data
-**/
-PEI_CPU_MP_DATA *
-GetMpHobData (
- VOID
- )
-{
- EFI_HOB_GUID_TYPE *GuidHob;
- VOID *DataInHob;
- PEI_CPU_MP_DATA *CpuMpData;
-
- CpuMpData = NULL;
- GuidHob = GetFirstGuidHob (&gEfiCallerIdGuid);
- if (GuidHob != NULL) {
- DataInHob = GET_GUID_HOB_DATA (GuidHob);
- CpuMpData = (PEI_CPU_MP_DATA *)(*(UINTN *)DataInHob);
- }
- ASSERT (CpuMpData != NULL);
- return CpuMpData;
-}
-
-/**
- Save the volatile registers required to be restored following INIT IPI.
-
- @param VolatileRegisters Returns buffer saved the volatile resisters
-**/
-STATIC
-VOID
-SaveVolatileRegisters (
- OUT CPU_VOLATILE_REGISTERS *VolatileRegisters
- )
-{
- UINT32 RegEdx;
-
- VolatileRegisters->Cr0 = AsmReadCr0 ();
- VolatileRegisters->Cr3 = AsmReadCr3 ();
- VolatileRegisters->Cr4 = AsmReadCr4 ();
-
- AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &RegEdx);
- if ((RegEdx & BIT2) != 0) {
- //
- // If processor supports Debugging Extensions feature
- // by CPUID.[EAX=01H]:EDX.BIT2
- //
- VolatileRegisters->Dr0 = AsmReadDr0 ();
- VolatileRegisters->Dr1 = AsmReadDr1 ();
- VolatileRegisters->Dr2 = AsmReadDr2 ();
- VolatileRegisters->Dr3 = AsmReadDr3 ();
- VolatileRegisters->Dr6 = AsmReadDr6 ();
- VolatileRegisters->Dr7 = AsmReadDr7 ();
- }
-}
-
-/**
- Restore the volatile registers following INIT IPI.
-
- @param VolatileRegisters Pointer to volatile resisters
- @param IsRestoreDr TRUE: Restore DRx if supported
- FALSE: Do not restore DRx
-**/
-STATIC
-VOID
-RestoreVolatileRegisters (
- IN CPU_VOLATILE_REGISTERS *VolatileRegisters,
- IN BOOLEAN IsRestoreDr
- )
-{
- UINT32 RegEdx;
-
- AsmWriteCr0 (VolatileRegisters->Cr0);
- AsmWriteCr3 (VolatileRegisters->Cr3);
- AsmWriteCr4 (VolatileRegisters->Cr4);
-
- if (IsRestoreDr) {
- AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &RegEdx);
- if ((RegEdx & BIT2) != 0) {
- //
- // If processor supports Debugging Extensions feature
- // by CPUID.[EAX=01H]:EDX.BIT2
- //
- AsmWriteDr0 (VolatileRegisters->Dr0);
- AsmWriteDr1 (VolatileRegisters->Dr1);
- AsmWriteDr2 (VolatileRegisters->Dr2);
- AsmWriteDr3 (VolatileRegisters->Dr3);
- AsmWriteDr6 (VolatileRegisters->Dr6);
- AsmWriteDr7 (VolatileRegisters->Dr7);
- }
- }
-}
-
-/**
- Find the current Processor number by APIC ID.
-
- @param PeiCpuMpData Pointer to PEI CPU MP Data
- @param ProcessorNumber Return the pocessor number found
-
- @retval EFI_SUCCESS ProcessorNumber is found and returned.
- @retval EFI_NOT_FOUND ProcessorNumber is not found.
-**/
-STATIC
-EFI_STATUS
-GetProcessorNumber (
- IN PEI_CPU_MP_DATA *PeiCpuMpData,
- OUT UINTN *ProcessorNumber
- )
-{
- UINTN TotalProcessorNumber;
- UINTN Index;
-
- TotalProcessorNumber = PeiCpuMpData->CpuCount;
- for (Index = 0; Index < TotalProcessorNumber; Index ++) {
- if (PeiCpuMpData->CpuData[Index].ApicId == GetInitialApicId ()) {
- *ProcessorNumber = Index;
- return EFI_SUCCESS;
- }
- }
- return EFI_NOT_FOUND;
-}
-
-/**
- This function will be called from AP reset code if BSP uses WakeUpAP.
-
- @param ExchangeInfo Pointer to the MP exchange info buffer
- @param NumApsExecuting Number of current executing AP
-**/
-STATIC
-VOID
-EFIAPI
-ApCFunction (
- IN MP_CPU_EXCHANGE_INFO *ExchangeInfo,
- IN UINTN NumApsExecuting
- )
-{
- PEI_CPU_MP_DATA *PeiCpuMpData;
- UINTN ProcessorNumber;
- EFI_AP_PROCEDURE Procedure;
- UINTN BistData;
- volatile UINT32 *ApStartupSignalBuffer;
-
- PeiCpuMpData = ExchangeInfo->PeiCpuMpData;
- while (TRUE) {
- if (PeiCpuMpData->InitFlag) {
- ProcessorNumber = NumApsExecuting;
- //
- // Sync BSP's Control registers to APs
- //
- RestoreVolatileRegisters (&PeiCpuMpData->CpuData[0].VolatileRegisters, FALSE);
- //
- // This is first time AP wakeup, get BIST information from AP stack
- //
- BistData = *(UINTN *) (PeiCpuMpData->Buffer + ProcessorNumber * PeiCpuMpData->CpuApStackSize - sizeof (UINTN));
- PeiCpuMpData->CpuData[ProcessorNumber].Health.Uint32 = (UINT32) BistData;
- PeiCpuMpData->CpuData[ProcessorNumber].ApicId = GetInitialApicId ();
- if (PeiCpuMpData->CpuData[ProcessorNumber].ApicId >= 0xFF) {
- //
- // Set x2APIC mode if there are any logical processor reporting
- // an APIC ID of 255 or greater.
- //
- AcquireSpinLock(&PeiCpuMpData->MpLock);
- PeiCpuMpData->X2ApicEnable = TRUE;
- ReleaseSpinLock(&PeiCpuMpData->MpLock);
- }
- //
- // Sync BSP's Mtrr table to all wakeup APs and load microcode on APs.
- //
- MtrrSetAllMtrrs (&PeiCpuMpData->MtrrTable);
- MicrocodeDetect (PeiCpuMpData);
- PeiCpuMpData->CpuData[ProcessorNumber].State = CpuStateIdle;
- } else {
- //
- // Execute AP function if AP is not disabled
- //
- GetProcessorNumber (PeiCpuMpData, &ProcessorNumber);
- if (PeiCpuMpData->ApLoopMode == ApInHltLoop) {
- //
- // Restore AP's volatile registers saved
- //
- RestoreVolatileRegisters (&PeiCpuMpData->CpuData[ProcessorNumber].VolatileRegisters, TRUE);
- }
-
- if ((PeiCpuMpData->CpuData[ProcessorNumber].State != CpuStateDisabled) &&
- (PeiCpuMpData->ApFunction != 0)) {
- PeiCpuMpData->CpuData[ProcessorNumber].State = CpuStateBusy;
- Procedure = (EFI_AP_PROCEDURE)(UINTN)PeiCpuMpData->ApFunction;
- //
- // Invoke AP function here
- //
- Procedure ((VOID *)(UINTN)PeiCpuMpData->ApFunctionArgument);
- //
- // Re-get the processor number due to BSP/AP maybe exchange in AP function
- //
- GetProcessorNumber (PeiCpuMpData, &ProcessorNumber);
- PeiCpuMpData->CpuData[ProcessorNumber].State = CpuStateIdle;
- }
- }
-
- //
- // AP finished executing C code
- //
- InterlockedIncrement ((UINT32 *)&PeiCpuMpData->FinishedCount);
-
- //
- // Place AP is specified loop mode
- //
- if (PeiCpuMpData->ApLoopMode == ApInHltLoop) {
- //
- // Save AP volatile registers
- //
- SaveVolatileRegisters (&PeiCpuMpData->CpuData[ProcessorNumber].VolatileRegisters);
- //
- // Place AP in Hlt-loop
- //
- while (TRUE) {
- DisableInterrupts ();
- CpuSleep ();
- CpuPause ();
- }
- }
- ApStartupSignalBuffer = PeiCpuMpData->CpuData[ProcessorNumber].StartupApSignal;
- while (TRUE) {
- DisableInterrupts ();
- if (PeiCpuMpData->ApLoopMode == ApInMwaitLoop) {
- //
- // Place AP in Mwait-loop
- //
- AsmMonitor ((UINTN)ApStartupSignalBuffer, 0, 0);
- if (*ApStartupSignalBuffer != WAKEUP_AP_SIGNAL) {
- //
- // If AP start-up signal is not set, place AP into
- // the maximum C-state
- //
- AsmMwait (PeiCpuMpData->ApTargetCState << 4, 0);
- }
- } else if (PeiCpuMpData->ApLoopMode == ApInRunLoop) {
- //
- // Place AP in Run-loop
- //
- CpuPause ();
- } else {
- ASSERT (FALSE);
- }
-
- //
- // If AP start-up signal is written, AP is waken up
- // otherwise place AP in loop again
- //
- if (*ApStartupSignalBuffer == WAKEUP_AP_SIGNAL) {
- //
- // Clear AP start-up signal when AP waken up
- //
- InterlockedCompareExchange32 (
- (UINT32 *)ApStartupSignalBuffer,
- WAKEUP_AP_SIGNAL,
- 0
- );
- break;
- }
- }
- }
-}
-
-/**
- Write AP start-up signal to wakeup AP.
-
- @param ApStartupSignalBuffer Pointer to AP wakeup signal
-**/
-VOID
-WriteStartupSignal (
- IN volatile UINT32 *ApStartupSignalBuffer
- )
-{
- *ApStartupSignalBuffer = WAKEUP_AP_SIGNAL;
- //
- // If AP is waken up, StartupApSignal should be cleared.
- // Otherwise, write StartupApSignal again till AP waken up.
- //
- while (InterlockedCompareExchange32 (
- (UINT32 *)ApStartupSignalBuffer,
- WAKEUP_AP_SIGNAL,
- WAKEUP_AP_SIGNAL
- ) != 0) {
- CpuPause ();
- }
-}
-
-/**
- This function will be called by BSP to wakeup AP.
-
- @param PeiCpuMpData Pointer to PEI CPU MP Data
- @param Broadcast TRUE: Send broadcast IPI to all APs
- FALSE: Send IPI to AP by ApicId
- @param ProcessorNumber The handle number of specified processor
- @param Procedure The function to be invoked by AP
- @param ProcedureArgument The argument to be passed into AP function
-**/
-STATIC
-VOID
-WakeUpAP (
- IN PEI_CPU_MP_DATA *PeiCpuMpData,
- IN BOOLEAN Broadcast,
- IN UINTN ProcessorNumber,
- IN EFI_AP_PROCEDURE Procedure, OPTIONAL
- IN VOID *ProcedureArgument OPTIONAL
- )
-{
- volatile MP_CPU_EXCHANGE_INFO *ExchangeInfo;
- UINTN Index;
-
- PeiCpuMpData->ApFunction = (UINTN) Procedure;
- PeiCpuMpData->ApFunctionArgument = (UINTN) ProcedureArgument;
- PeiCpuMpData->FinishedCount = 0;
-
- ExchangeInfo = PeiCpuMpData->MpCpuExchangeInfo;
- ExchangeInfo->Lock = 0;
- ExchangeInfo->StackStart = PeiCpuMpData->Buffer;
- ExchangeInfo->StackSize = PeiCpuMpData->CpuApStackSize;
- ExchangeInfo->BufferStart = PeiCpuMpData->WakeupBuffer;
- ExchangeInfo->ModeOffset = PeiCpuMpData->AddressMap.ModeEntryOffset;
- ExchangeInfo->Cr3 = AsmReadCr3 ();
- ExchangeInfo->CodeSegment = AsmReadCs ();
- ExchangeInfo->DataSegment = AsmReadDs ();
- ExchangeInfo->CFunction = (UINTN) ApCFunction;
- ExchangeInfo->NumApsExecuting = 0;
- ExchangeInfo->PeiCpuMpData = PeiCpuMpData;
-
- //
- // Get the BSP's data of GDT and IDT
- //
- AsmReadGdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->GdtrProfile);
- AsmReadIdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->IdtrProfile);
-
- if (PeiCpuMpData->ApLoopMode == ApInMwaitLoop) {
- //
- // Get AP target C-state each time when waking up AP,
- // for it maybe updated by platform again
- //
- PeiCpuMpData->ApTargetCState = PcdGet8 (PcdCpuApTargetCstate);
- }
-
- //
- // Wakeup APs per AP loop state
- //
- if (PeiCpuMpData->ApLoopMode == ApInHltLoop || PeiCpuMpData->InitFlag) {
- if (Broadcast) {
- SendInitSipiSipiAllExcludingSelf ((UINT32) ExchangeInfo->BufferStart);
- } else {
- SendInitSipiSipi (
- PeiCpuMpData->CpuData[ProcessorNumber].ApicId,
- (UINT32) ExchangeInfo->BufferStart
- );
- }
- } else if ((PeiCpuMpData->ApLoopMode == ApInMwaitLoop) ||
- (PeiCpuMpData->ApLoopMode == ApInRunLoop)) {
- if (Broadcast) {
- for (Index = 0; Index < PeiCpuMpData->CpuCount; Index++) {
- if (Index != PeiCpuMpData->BspNumber) {
- WriteStartupSignal (PeiCpuMpData->CpuData[Index].StartupApSignal);
- }
- }
- } else {
- WriteStartupSignal (PeiCpuMpData->CpuData[ProcessorNumber].StartupApSignal);
- }
- } else {
- ASSERT (FALSE);
- }
- return ;
-}
-
-/**
- Get available system memory below 1MB by specified size.
-
- @param WakeupBufferSize Wakeup buffer size required
-
- @retval other Return wakeup buffer address below 1MB.
- @retval -1 Cannot find free memory below 1MB.
-**/
-STATIC
-UINTN
-GetWakeupBuffer (
- IN UINTN WakeupBufferSize
- )
-{
- EFI_PEI_HOB_POINTERS Hob;
- UINTN WakeupBufferStart;
- UINTN WakeupBufferEnd;
-
- //
- // Get the HOB list for processing
- //
- Hob.Raw = GetHobList ();
-
- //
- // Collect memory ranges
- //
- while (!END_OF_HOB_LIST (Hob)) {
- if (Hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
- if ((Hob.ResourceDescriptor->PhysicalStart < BASE_1MB) &&
- (Hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) &&
- ((Hob.ResourceDescriptor->ResourceAttribute &
- (EFI_RESOURCE_ATTRIBUTE_READ_PROTECTED |
- EFI_RESOURCE_ATTRIBUTE_WRITE_PROTECTED |
- EFI_RESOURCE_ATTRIBUTE_EXECUTION_PROTECTED
- )) == 0)
- ) {
- //
- // Need memory under 1MB to be collected here
- //
- WakeupBufferEnd = (UINTN) (Hob.ResourceDescriptor->PhysicalStart + Hob.ResourceDescriptor->ResourceLength);
- if (WakeupBufferEnd > BASE_1MB) {
- //
- // Wakeup buffer should be under 1MB
- //
- WakeupBufferEnd = BASE_1MB;
- }
- //
- // Wakeup buffer should be aligned on 4KB
- //
- WakeupBufferStart = (WakeupBufferEnd - WakeupBufferSize) & ~(SIZE_4KB - 1);
- if (WakeupBufferStart < Hob.ResourceDescriptor->PhysicalStart) {
- continue;
- }
- //
- // Create a memory allocation HOB.
- //
- BuildMemoryAllocationHob (
- WakeupBufferStart,
- WakeupBufferSize,
- EfiBootServicesData
- );
- return WakeupBufferStart;
- }
- }
- //
- // Find the next HOB
- //
- Hob.Raw = GET_NEXT_HOB (Hob);
- }
-
- return (UINTN) -1;
-}
-
-/**
- Get available system memory below 1MB by specified size.
-
- @param PeiCpuMpData Pointer to PEI CPU MP Data
-**/
-STATIC
-VOID
-BackupAndPrepareWakeupBuffer(
- IN PEI_CPU_MP_DATA *PeiCpuMpData
- )
-{
- CopyMem (
- (VOID *) PeiCpuMpData->BackupBuffer,
- (VOID *) PeiCpuMpData->WakeupBuffer,
- PeiCpuMpData->BackupBufferSize
- );
- CopyMem (
- (VOID *) PeiCpuMpData->WakeupBuffer,
- (VOID *) PeiCpuMpData->AddressMap.RendezvousFunnelAddress,
- PeiCpuMpData->AddressMap.RendezvousFunnelSize
- );
-}
-
-/**
- Restore wakeup buffer data.
-
- @param PeiCpuMpData Pointer to PEI CPU MP Data
-**/
-STATIC
-VOID
-RestoreWakeupBuffer(
- IN PEI_CPU_MP_DATA *PeiCpuMpData
- )
-{
- CopyMem ((VOID *) PeiCpuMpData->WakeupBuffer, (VOID *) PeiCpuMpData->BackupBuffer, PeiCpuMpData->BackupBufferSize);
-}
-
-/**
- This function will get CPU count in the system.
-
- @param PeiCpuMpData Pointer to PEI CPU MP Data
-
- @return AP processor count
-**/
-UINT32
-CountProcessorNumber (
- IN PEI_CPU_MP_DATA *PeiCpuMpData
- )
-{
- //
- // Load Microcode on BSP
- //
- MicrocodeDetect (PeiCpuMpData);
- //
- // Store BSP's MTRR setting
- //
- MtrrGetAllMtrrs (&PeiCpuMpData->MtrrTable);
-
- //
- // Only perform AP detection if PcdCpuMaxLogicalProcessorNumber is greater than 1
- //
- if (PcdGet32 (PcdCpuMaxLogicalProcessorNumber) > 1) {
- //
- // Send 1st broadcast IPI to APs to wakeup APs
- //
- PeiCpuMpData->InitFlag = TRUE;
- PeiCpuMpData->X2ApicEnable = FALSE;
- WakeUpAP (PeiCpuMpData, TRUE, 0, NULL, NULL);
- //
- // Wait for AP task to complete and then exit.
- //
- MicroSecondDelay (PcdGet32 (PcdCpuApInitTimeOutInMicroSeconds));
- PeiCpuMpData->InitFlag = FALSE;
- PeiCpuMpData->CpuCount += (UINT32)PeiCpuMpData->MpCpuExchangeInfo->NumApsExecuting;
- ASSERT (PeiCpuMpData->CpuCount <= PcdGet32 (PcdCpuMaxLogicalProcessorNumber));
- //
- // Wait for all APs finished the initialization
- //
- while (PeiCpuMpData->FinishedCount < (PeiCpuMpData->CpuCount - 1)) {
- CpuPause ();
- }
-
- if (PeiCpuMpData->X2ApicEnable) {
- DEBUG ((EFI_D_INFO, "Force x2APIC mode!\n"));
- //
- // Wakeup all APs to enable x2APIC mode
- //
- WakeUpAP (PeiCpuMpData, TRUE, 0, ApFuncEnableX2Apic, NULL);
- //
- // Wait for all known APs finished
- //
- while (PeiCpuMpData->FinishedCount < (PeiCpuMpData->CpuCount - 1)) {
- CpuPause ();
- }
- //
- // Enable x2APIC on BSP
- //
- SetApicMode (LOCAL_APIC_MODE_X2APIC);
- }
- DEBUG ((EFI_D_INFO, "APIC MODE is %d\n", GetApicMode ()));
- //
- // Sort BSP/Aps by CPU APIC ID in ascending order
- //
- SortApicId (PeiCpuMpData);
- }
-
- DEBUG ((EFI_D_INFO, "CpuMpPei: Find %d processors in system.\n", PeiCpuMpData->CpuCount));
- return PeiCpuMpData->CpuCount;
-}
-
-/**
- Prepare for AP wakeup buffer and copy AP reset code into it.
-
- Get wakeup buffer below 1MB. Allocate memory for CPU MP Data and APs Stack.
-
- @return Pointer to PEI CPU MP Data
-**/
-PEI_CPU_MP_DATA *
-PrepareAPStartupVector (
- VOID
- )
-{
- EFI_STATUS Status;
- UINT32 MaxCpuCount;
- PEI_CPU_MP_DATA *PeiCpuMpData;
- EFI_PHYSICAL_ADDRESS Buffer;
- UINTN BufferSize;
- UINTN WakeupBuffer;
- UINTN WakeupBufferSize;
- MP_ASSEMBLY_ADDRESS_MAP AddressMap;
- UINT8 ApLoopMode;
- UINT16 MonitorFilterSize;
- UINT8 *MonitorBuffer;
- UINTN Index;
-
- AsmGetAddressMap (&AddressMap);
- WakeupBufferSize = AddressMap.RendezvousFunnelSize + sizeof (MP_CPU_EXCHANGE_INFO);
- WakeupBuffer = GetWakeupBuffer ((WakeupBufferSize + SIZE_4KB - 1) & ~(SIZE_4KB - 1));
- ASSERT (WakeupBuffer != (UINTN) -1);
- DEBUG ((EFI_D_INFO, "CpuMpPei: WakeupBuffer = 0x%x\n", WakeupBuffer));
-
- //
- // Allocate Pages for APs stack, CPU MP Data, backup buffer for wakeup buffer,
- // and monitor buffer if required.
- //
- MaxCpuCount = PcdGet32(PcdCpuMaxLogicalProcessorNumber);
- BufferSize = PcdGet32 (PcdCpuApStackSize) * MaxCpuCount + sizeof (PEI_CPU_MP_DATA)
- + WakeupBufferSize + sizeof (PEI_CPU_DATA) * MaxCpuCount;
- ApLoopMode = GetApLoopMode (&MonitorFilterSize);
- BufferSize += MonitorFilterSize * MaxCpuCount;
- Status = PeiServicesAllocatePages (
- EfiBootServicesData,
- EFI_SIZE_TO_PAGES (BufferSize),
- &Buffer
- );
- ASSERT_EFI_ERROR (Status);
-
- PeiCpuMpData = (PEI_CPU_MP_DATA *) (UINTN) (Buffer + PcdGet32 (PcdCpuApStackSize) * MaxCpuCount);
- PeiCpuMpData->Buffer = (UINTN) Buffer;
- PeiCpuMpData->CpuApStackSize = PcdGet32 (PcdCpuApStackSize);
- PeiCpuMpData->WakeupBuffer = WakeupBuffer;
- PeiCpuMpData->BackupBuffer = (UINTN)PeiCpuMpData + sizeof (PEI_CPU_MP_DATA);
- PeiCpuMpData->BackupBufferSize = WakeupBufferSize;
- PeiCpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN) (WakeupBuffer + AddressMap.RendezvousFunnelSize);
-
- PeiCpuMpData->CpuCount = 1;
- PeiCpuMpData->BspNumber = 0;
- PeiCpuMpData->CpuData = (PEI_CPU_DATA *) (PeiCpuMpData->BackupBuffer +
- PeiCpuMpData->BackupBufferSize);
- PeiCpuMpData->CpuData[0].ApicId = GetInitialApicId ();
- PeiCpuMpData->CpuData[0].Health.Uint32 = 0;
- PeiCpuMpData->EndOfPeiFlag = FALSE;
- InitializeSpinLock(&PeiCpuMpData->MpLock);
- SaveVolatileRegisters (&PeiCpuMpData->CpuData[0].VolatileRegisters);
- CopyMem (&PeiCpuMpData->AddressMap, &AddressMap, sizeof (MP_ASSEMBLY_ADDRESS_MAP));
- //
- // Initialize AP loop mode
- //
- PeiCpuMpData->ApLoopMode = ApLoopMode;
- DEBUG ((EFI_D_INFO, "AP Loop Mode is %d\n", PeiCpuMpData->ApLoopMode));
- MonitorBuffer = (UINT8 *)(PeiCpuMpData->CpuData + MaxCpuCount);
- if (PeiCpuMpData->ApLoopMode != ApInHltLoop) {
- //
- // Set up APs wakeup signal buffer
- //
- for (Index = 0; Index < MaxCpuCount; Index++) {
- PeiCpuMpData->CpuData[Index].StartupApSignal =
- (UINT32 *)(MonitorBuffer + MonitorFilterSize * Index);
- }
- }
- //
- // Backup original data and copy AP reset code in it
- //
- BackupAndPrepareWakeupBuffer(PeiCpuMpData);
-
- return PeiCpuMpData;
-}
-
-/**
- Notify function on End Of Pei PPI.
-
- On S3 boot, this function will restore wakeup buffer data.
- On normal boot, this function will flag wakeup buffer to be un-used type.
-
- @param PeiServices The pointer to the PEI Services Table.
- @param NotifyDescriptor Address of the notification descriptor data structure.
- @param Ppi Address of the PPI that was installed.
-
- @retval EFI_SUCCESS When everything is OK.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-CpuMpEndOfPeiCallback (
- IN EFI_PEI_SERVICES **PeiServices,
- IN EFI_PEI_NOTIFY_DESCRIPTOR *NotifyDescriptor,
- IN VOID *Ppi
- )
-{
- EFI_STATUS Status;
- EFI_BOOT_MODE BootMode;
- PEI_CPU_MP_DATA *PeiCpuMpData;
- EFI_PEI_HOB_POINTERS Hob;
- EFI_HOB_MEMORY_ALLOCATION *MemoryHob;
-
- DEBUG ((EFI_D_INFO, "CpuMpPei: CpuMpEndOfPeiCallback () invoked\n"));
-
- Status = PeiServicesGetBootMode (&BootMode);
- ASSERT_EFI_ERROR (Status);
-
- PeiCpuMpData = GetMpHobData ();
- ASSERT (PeiCpuMpData != NULL);
-
- if (BootMode != BOOT_ON_S3_RESUME) {
- //
- // Get the HOB list for processing
- //
- Hob.Raw = GetHobList ();
- //
- // Collect memory ranges
- //
- while (!END_OF_HOB_LIST (Hob)) {
- if (Hob.Header->HobType == EFI_HOB_TYPE_MEMORY_ALLOCATION) {
- MemoryHob = Hob.MemoryAllocation;
- if(MemoryHob->AllocDescriptor.MemoryBaseAddress == PeiCpuMpData->WakeupBuffer) {
- //
- // Flag this HOB type to un-used
- //
- GET_HOB_TYPE (Hob) = EFI_HOB_TYPE_UNUSED;
- break;
- }
- }
- Hob.Raw = GET_NEXT_HOB (Hob);
- }
- } else {
- RestoreWakeupBuffer (PeiCpuMpData);
- PeiCpuMpData->EndOfPeiFlag = TRUE;
- }
- return EFI_SUCCESS;
-}
-
/**
The Entry point of the MP CPU PEIM.
|