diff options
Diffstat (limited to 'UefiCpuPkg/Library/MpInitLib/DxeMpLib.c')
| -rw-r--r-- | UefiCpuPkg/Library/MpInitLib/DxeMpLib.c | 743 |
1 files changed, 0 insertions, 743 deletions
diff --git a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c b/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c deleted file mode 100644 index b393244e05..0000000000 --- a/UefiCpuPkg/Library/MpInitLib/DxeMpLib.c +++ /dev/null @@ -1,743 +0,0 @@ -/** @file
- MP initialize support functions for DXE phase.
-
- Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
- 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
- http://opensource.org/licenses/bsd-license.php
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "MpLib.h"
-
-#include <Library/UefiLib.h>
-#include <Library/UefiBootServicesTableLib.h>
-#include <Library/DebugAgentLib.h>
-
-#include <Protocol/Timer.h>
-
-#define AP_CHECK_INTERVAL (EFI_TIMER_PERIOD_MILLISECONDS (100))
-#define AP_SAFE_STACK_SIZE 128
-
-CPU_MP_DATA *mCpuMpData = NULL;
-EFI_EVENT mCheckAllApsEvent = NULL;
-EFI_EVENT mMpInitExitBootServicesEvent = NULL;
-EFI_EVENT mLegacyBootEvent = NULL;
-volatile BOOLEAN mStopCheckAllApsStatus = TRUE;
-VOID *mReservedApLoopFunc = NULL;
-UINTN mReservedTopOfApStack;
-volatile UINT32 mNumberToFinish = 0;
-
-/**
- Enable Debug Agent to support source debugging on AP function.
-
-**/
-VOID
-EnableDebugAgent (
- VOID
- )
-{
- //
- // Initialize Debug Agent to support source level debug in DXE phase
- //
- InitializeDebugAgent (DEBUG_AGENT_INIT_DXE_AP, NULL, NULL);
-}
-
-/**
- Get the pointer to CPU MP Data structure.
-
- @return The pointer to CPU MP Data structure.
-**/
-CPU_MP_DATA *
-GetCpuMpData (
- VOID
- )
-{
- ASSERT (mCpuMpData != NULL);
- return mCpuMpData;
-}
-
-/**
- Save the pointer to CPU MP Data structure.
-
- @param[in] CpuMpData The pointer to CPU MP Data structure will be saved.
-**/
-VOID
-SaveCpuMpData (
- IN CPU_MP_DATA *CpuMpData
- )
-{
- mCpuMpData = CpuMpData;
-}
-
-/**
- Allocate reset vector buffer.
-
- @param[in, out] CpuMpData The pointer to CPU MP Data structure.
-**/
-VOID
-AllocateResetVector (
- IN OUT CPU_MP_DATA *CpuMpData
- )
-{
- EFI_STATUS Status;
- UINTN ApResetVectorSize;
- EFI_PHYSICAL_ADDRESS StartAddress;
-
- if (CpuMpData->SaveRestoreFlag) {
- BackupAndPrepareWakeupBuffer (CpuMpData);
- } else {
- ApResetVectorSize = CpuMpData->AddressMap.RendezvousFunnelSize +
- sizeof (MP_CPU_EXCHANGE_INFO);
-
- StartAddress = BASE_1MB;
- Status = gBS->AllocatePages (
- AllocateMaxAddress,
- EfiACPIMemoryNVS,
- EFI_SIZE_TO_PAGES (ApResetVectorSize),
- &StartAddress
- );
- ASSERT_EFI_ERROR (Status);
-
- CpuMpData->WakeupBuffer = (UINTN) StartAddress;
- CpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN)
- (CpuMpData->WakeupBuffer + CpuMpData->AddressMap.RendezvousFunnelSize);
- //
- // copy AP reset code in it
- //
- CopyMem (
- (VOID *) CpuMpData->WakeupBuffer,
- (VOID *) CpuMpData->AddressMap.RendezvousFunnelAddress,
- CpuMpData->AddressMap.RendezvousFunnelSize
- );
- }
-}
-
-/**
- Free AP reset vector buffer.
-
- @param[in] CpuMpData The pointer to CPU MP Data structure.
-**/
-VOID
-FreeResetVector (
- IN CPU_MP_DATA *CpuMpData
- )
-{
- EFI_STATUS Status;
- UINTN ApResetVectorSize;
-
- if (CpuMpData->SaveRestoreFlag) {
- RestoreWakeupBuffer (CpuMpData);
- } else {
- ApResetVectorSize = CpuMpData->AddressMap.RendezvousFunnelSize +
- sizeof (MP_CPU_EXCHANGE_INFO);
- Status = gBS->FreePages(
- (EFI_PHYSICAL_ADDRESS)CpuMpData->WakeupBuffer,
- EFI_SIZE_TO_PAGES (ApResetVectorSize)
- );
- ASSERT_EFI_ERROR (Status);
- }
-}
-
-/**
- Checks APs status and updates APs status if needed.
-
-**/
-VOID
-CheckAndUpdateApsStatus (
- VOID
- )
-{
- UINTN ProcessorNumber;
- EFI_STATUS Status;
- CPU_MP_DATA *CpuMpData;
-
- CpuMpData = GetCpuMpData ();
-
- //
- // First, check whether pending StartupAllAPs() exists.
- //
- if (CpuMpData->WaitEvent != NULL) {
-
- Status = CheckAllAPs ();
- //
- // If all APs finish for StartupAllAPs(), signal the WaitEvent for it.
- //
- if (Status != EFI_NOT_READY) {
- Status = gBS->SignalEvent (CpuMpData->WaitEvent);
- CpuMpData->WaitEvent = NULL;
- }
- }
-
- //
- // Second, check whether pending StartupThisAPs() callings exist.
- //
- for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {
-
- if (CpuMpData->CpuData[ProcessorNumber].WaitEvent == NULL) {
- continue;
- }
-
- Status = CheckThisAP (ProcessorNumber);
-
- if (Status != EFI_NOT_READY) {
- gBS->SignalEvent (CpuMpData->CpuData[ProcessorNumber].WaitEvent);
- CpuMpData->CpuData[ProcessorNumber].WaitEvent = NULL;
- }
- }
-}
-
-/**
- Checks APs' status periodically.
-
- This function is triggered by timer periodically to check the
- state of APs for StartupAllAPs() and StartupThisAP() executed
- in non-blocking mode.
-
- @param[in] Event Event triggered.
- @param[in] Context Parameter passed with the event.
-
-**/
-VOID
-EFIAPI
-CheckApsStatus (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- //
- // If CheckApsStatus() is not stopped, otherwise return immediately.
- //
- if (!mStopCheckAllApsStatus) {
- CheckAndUpdateApsStatus ();
- }
-}
-
-/**
- Get Protected mode code segment from current GDT table.
-
- @return Protected mode code segment value.
-**/
-UINT16
-GetProtectedModeCS (
- VOID
- )
-{
- IA32_DESCRIPTOR GdtrDesc;
- IA32_SEGMENT_DESCRIPTOR *GdtEntry;
- UINTN GdtEntryCount;
- UINT16 Index;
-
- Index = (UINT16) -1;
- AsmReadGdtr (&GdtrDesc);
- GdtEntryCount = (GdtrDesc.Limit + 1) / sizeof (IA32_SEGMENT_DESCRIPTOR);
- GdtEntry = (IA32_SEGMENT_DESCRIPTOR *) GdtrDesc.Base;
- for (Index = 0; Index < GdtEntryCount; Index++) {
- if (GdtEntry->Bits.L == 0) {
- if (GdtEntry->Bits.Type > 8 && GdtEntry->Bits.L == 0) {
- break;
- }
- }
- GdtEntry++;
- }
- ASSERT (Index != -1);
- return Index * 8;
-}
-
-/**
- Do sync on APs.
-
- @param[in, out] Buffer Pointer to private data buffer.
-**/
-VOID
-EFIAPI
-RelocateApLoop (
- IN OUT VOID *Buffer
- )
-{
- CPU_MP_DATA *CpuMpData;
- BOOLEAN MwaitSupport;
- ASM_RELOCATE_AP_LOOP AsmRelocateApLoopFunc;
- UINTN ProcessorNumber;
-
- MpInitLibWhoAmI (&ProcessorNumber);
- CpuMpData = GetCpuMpData ();
- MwaitSupport = IsMwaitSupport ();
- AsmRelocateApLoopFunc = (ASM_RELOCATE_AP_LOOP) (UINTN) mReservedApLoopFunc;
- AsmRelocateApLoopFunc (
- MwaitSupport,
- CpuMpData->ApTargetCState,
- CpuMpData->PmCodeSegment,
- mReservedTopOfApStack - ProcessorNumber * AP_SAFE_STACK_SIZE,
- (UINTN) &mNumberToFinish
- );
- //
- // It should never reach here
- //
- ASSERT (FALSE);
-}
-
-/**
- Callback function for ExitBootServices.
-
- @param[in] Event Event whose notification function is being invoked.
- @param[in] Context The pointer to the notification function's context,
- which is implementation-dependent.
-
-**/
-VOID
-EFIAPI
-MpInitChangeApLoopCallback (
- IN EFI_EVENT Event,
- IN VOID *Context
- )
-{
- CPU_MP_DATA *CpuMpData;
-
- CpuMpData = GetCpuMpData ();
- CpuMpData->SaveRestoreFlag = TRUE;
- CpuMpData->PmCodeSegment = GetProtectedModeCS ();
- CpuMpData->ApLoopMode = PcdGet8 (PcdCpuApLoopMode);
- mNumberToFinish = CpuMpData->CpuCount - 1;
- WakeUpAP (CpuMpData, TRUE, 0, RelocateApLoop, NULL);
- while (mNumberToFinish > 0) {
- CpuPause ();
- }
- DEBUG ((DEBUG_INFO, "%a() done!\n", __FUNCTION__));
-}
-
-/**
- Initialize global data for MP support.
-
- @param[in] CpuMpData The pointer to CPU MP Data structure.
-**/
-VOID
-InitMpGlobalData (
- IN CPU_MP_DATA *CpuMpData
- )
-{
- EFI_STATUS Status;
- EFI_PHYSICAL_ADDRESS Address;
- UINTN ApSafeBufferSize;
-
- SaveCpuMpData (CpuMpData);
-
- if (CpuMpData->CpuCount == 1) {
- //
- // If only BSP exists, return
- //
- return;
- }
-
- //
- // Avoid APs access invalid buffer data which allocated by BootServices,
- // so we will allocate reserved data for AP loop code. We also need to
- // allocate this buffer below 4GB due to APs may be transferred to 32bit
- // protected mode on long mode DXE.
- // Allocating it in advance since memory services are not available in
- // Exit Boot Services callback function.
- //
- ApSafeBufferSize = CpuMpData->AddressMap.RelocateApLoopFuncSize;
- ApSafeBufferSize += CpuMpData->CpuCount * AP_SAFE_STACK_SIZE;
-
- Address = BASE_4GB - 1;
- Status = gBS->AllocatePages (
- AllocateMaxAddress,
- EfiReservedMemoryType,
- EFI_SIZE_TO_PAGES (ApSafeBufferSize),
- &Address
- );
- ASSERT_EFI_ERROR (Status);
- mReservedApLoopFunc = (VOID *) (UINTN) Address;
- ASSERT (mReservedApLoopFunc != NULL);
- mReservedTopOfApStack = (UINTN) Address + EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (ApSafeBufferSize));
- ASSERT ((mReservedTopOfApStack & (UINTN)(CPU_STACK_ALIGNMENT - 1)) == 0);
- CopyMem (
- mReservedApLoopFunc,
- CpuMpData->AddressMap.RelocateApLoopFuncAddress,
- CpuMpData->AddressMap.RelocateApLoopFuncSize
- );
-
- Status = gBS->CreateEvent (
- EVT_TIMER | EVT_NOTIFY_SIGNAL,
- TPL_NOTIFY,
- CheckApsStatus,
- NULL,
- &mCheckAllApsEvent
- );
- ASSERT_EFI_ERROR (Status);
-
- //
- // Set timer to check all APs status.
- //
- Status = gBS->SetTimer (
- mCheckAllApsEvent,
- TimerPeriodic,
- AP_CHECK_INTERVAL
- );
- ASSERT_EFI_ERROR (Status);
-
- Status = gBS->CreateEvent (
- EVT_SIGNAL_EXIT_BOOT_SERVICES,
- TPL_CALLBACK,
- MpInitChangeApLoopCallback,
- NULL,
- &mMpInitExitBootServicesEvent
- );
- ASSERT_EFI_ERROR (Status);
-
- Status = gBS->CreateEventEx (
- EVT_NOTIFY_SIGNAL,
- TPL_CALLBACK,
- MpInitChangeApLoopCallback,
- NULL,
- &gEfiEventLegacyBootGuid,
- &mLegacyBootEvent
- );
- ASSERT_EFI_ERROR (Status);
-}
-
-/**
- This service executes a caller provided function on all enabled APs.
-
- @param[in] Procedure A pointer to the function to be run on
- enabled APs of the system. See type
- EFI_AP_PROCEDURE.
- @param[in] SingleThread If TRUE, then all the enabled APs execute
- the function specified by Procedure one by
- one, in ascending order of processor handle
- number. If FALSE, then all the enabled APs
- execute the function specified by Procedure
- simultaneously.
- @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
- 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
- expires, this event is signaled. The BSP
- can use the CheckEvent() or WaitForEvent()
- services to check the state of event. Type
- EFI_EVENT is defined in CreateEvent() in
- the Unified Extensible Firmware Interface
- Specification.
- @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
- APs to return from 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
- by MpInitLibStartupAllAPs() or
- MPInitLibStartupThisAP().
- 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[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,
- if all APs finish successfully, then its
- content is set to NULL. If not all APs
- finish before timeout expires, then its
- content is set to address of the buffer
- holding handle numbers of the failed APs.
- The buffer is allocated by MP Initialization
- library, and it's the caller's responsibility to
- free the buffer with FreePool() service.
- In blocking mode, it is ready for consumption
- when the call returns. In non-blocking mode,
- it is ready when WaitEvent is signaled. The
- list of failed CPU is terminated by
- END_OF_CPU_LIST.
-
- @retval EFI_SUCCESS In blocking mode, all APs have finished before
- the timeout expired.
- @retval EFI_SUCCESS In non-blocking mode, function has been dispatched
- to all enabled APs.
- @retval EFI_UNSUPPORTED A non-blocking mode request was made after the
- UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was
- signaled.
- @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not
- supported.
- @retval EFI_DEVICE_ERROR Caller processor is AP.
- @retval EFI_NOT_STARTED No enabled APs exist in the system.
- @retval EFI_NOT_READY Any enabled APs are busy.
- @retval EFI_NOT_READY MP Initialize Library is not initialized.
- @retval EFI_TIMEOUT In blocking mode, the timeout expired before
- all enabled APs have finished.
- @retval EFI_INVALID_PARAMETER Procedure is NULL.
-
-**/
-EFI_STATUS
-EFIAPI
-MpInitLibStartupAllAPs (
- IN EFI_AP_PROCEDURE Procedure,
- IN BOOLEAN SingleThread,
- IN EFI_EVENT WaitEvent OPTIONAL,
- IN UINTN TimeoutInMicroseconds,
- IN VOID *ProcedureArgument OPTIONAL,
- OUT UINTN **FailedCpuList OPTIONAL
- )
-{
- EFI_STATUS Status;
-
- //
- // Temporarily stop checkAllApsStatus for avoid resource dead-lock.
- //
- mStopCheckAllApsStatus = TRUE;
-
- Status = StartupAllAPsWorker (
- Procedure,
- SingleThread,
- WaitEvent,
- TimeoutInMicroseconds,
- ProcedureArgument,
- FailedCpuList
- );
-
- //
- // Start checkAllApsStatus
- //
- mStopCheckAllApsStatus = FALSE;
-
- return Status;
-}
-
-/**
- This service lets the caller get one enabled AP to execute a caller-provided
- function.
-
- @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
- processors minus 1. The total number of
- logical processors can be retrieved by
- MpInitLibGetNumberOfProcessors().
- @param[in] WaitEvent The event created by the caller with CreateEvent()
- service. If it is NULL, then execute in
- 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 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
- EFI_EVENT is defined in CreateEvent() in
- the Unified Extensible Firmware Interface
- Specification.
- @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
- this AP to finish this Procedure, either for
- blocking or non-blocking mode. Zero means
- infinity. If the timeout expires before
- this AP returns from Procedure, then Procedure
- on the AP is terminated. The
- AP is available for next function assigned
- by MpInitLibStartupAllAPs() or
- MpInitLibStartupThisAP().
- 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 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
- Procedure before the timeout expires, its
- content is set to TRUE. Otherwise, the
- value is set to FALSE. The caller can
- determine if the AP returned from Procedure
- by evaluating this value.
-
- @retval EFI_SUCCESS In blocking mode, specified AP finished before
- the timeout expires.
- @retval EFI_SUCCESS In non-blocking mode, the function has been
- dispatched to specified AP.
- @retval EFI_UNSUPPORTED A non-blocking mode request was made after the
- UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was
- signaled.
- @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not
- supported.
- @retval EFI_DEVICE_ERROR The calling processor is an AP.
- @retval EFI_TIMEOUT In blocking mode, the timeout expired before
- the specified AP has finished.
- @retval EFI_NOT_READY The specified AP is busy.
- @retval EFI_NOT_READY MP Initialize Library is not initialized.
- @retval EFI_NOT_FOUND The processor with the handle specified by
- ProcessorNumber does not exist.
- @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.
- @retval EFI_INVALID_PARAMETER Procedure is NULL.
-
-**/
-EFI_STATUS
-EFIAPI
-MpInitLibStartupThisAP (
- IN EFI_AP_PROCEDURE Procedure,
- IN UINTN ProcessorNumber,
- IN EFI_EVENT WaitEvent OPTIONAL,
- IN UINTN TimeoutInMicroseconds,
- IN VOID *ProcedureArgument OPTIONAL,
- OUT BOOLEAN *Finished OPTIONAL
- )
-{
- EFI_STATUS Status;
-
- //
- // temporarily stop checkAllApsStatus for avoid resource dead-lock.
- //
- mStopCheckAllApsStatus = TRUE;
-
- Status = StartupThisAPWorker (
- Procedure,
- ProcessorNumber,
- WaitEvent,
- TimeoutInMicroseconds,
- ProcedureArgument,
- Finished
- );
-
- mStopCheckAllApsStatus = FALSE;
-
- return Status;
-}
-
-/**
- This service switches the requested AP to be the BSP from that point onward.
- This service changes the BSP for all purposes. This call can only be performed
- by the current BSP.
-
- @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
- logical processors minus 1. The total number of
- logical processors can be retrieved by
- MpInitLibGetNumberOfProcessors().
- @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an
- enabled AP. Otherwise, it will be disabled.
-
- @retval EFI_SUCCESS BSP successfully switched.
- @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_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
- a disabled AP.
- @retval EFI_NOT_READY The specified AP is busy.
- @retval EFI_NOT_READY MP Initialize Library is not initialized.
-
-**/
-EFI_STATUS
-EFIAPI
-MpInitLibSwitchBSP (
- IN UINTN ProcessorNumber,
- IN BOOLEAN EnableOldBSP
- )
-{
- EFI_STATUS Status;
- EFI_TIMER_ARCH_PROTOCOL *Timer;
- UINT64 TimerPeriod;
-
- TimerPeriod = 0;
- //
- // Locate Timer Arch Protocol
- //
- Status = gBS->LocateProtocol (&gEfiTimerArchProtocolGuid, NULL, (VOID **) &Timer);
- if (EFI_ERROR (Status)) {
- Timer = NULL;
- }
-
- if (Timer != NULL) {
- //
- // Save current rate of DXE Timer
- //
- Timer->GetTimerPeriod (Timer, &TimerPeriod);
- //
- // Disable DXE Timer and drain pending interrupts
- //
- Timer->SetTimerPeriod (Timer, 0);
- }
-
- Status = SwitchBSPWorker (ProcessorNumber, EnableOldBSP);
-
- if (Timer != NULL) {
- //
- // Enable and restore rate of DXE Timer
- //
- Timer->SetTimerPeriod (Timer, TimerPeriod);
- }
-
- return Status;
-}
-
-/**
- This service lets the caller enable or disable an AP from this point onward.
- This service may only be called from the BSP.
-
- @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
- MpInitLibGetNumberOfProcessors().
- @param[in] EnableAP Specifies the new state for the processor for
- enabled, FALSE for disabled.
- @param[in] HealthFlag If not NULL, a pointer to a value that specifies
- the new health status of the AP. This flag
- corresponds to StatusFlag defined in
- EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only
- the PROCESSOR_HEALTH_STATUS_BIT is used. All other
- bits are ignored. If it is NULL, this parameter
- is ignored.
-
- @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.
- @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed
- prior to this service returning.
- @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.
- @retval EFI_DEVICE_ERROR The calling processor is an AP.
- @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber
- does not exist.
- @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.
- @retval EFI_NOT_READY MP Initialize Library is not initialized.
-
-**/
-EFI_STATUS
-EFIAPI
-MpInitLibEnableDisableAP (
- IN UINTN ProcessorNumber,
- IN BOOLEAN EnableAP,
- IN UINT32 *HealthFlag OPTIONAL
- )
-{
- EFI_STATUS Status;
- BOOLEAN TempStopCheckState;
-
- TempStopCheckState = FALSE;
- //
- // temporarily stop checkAllAPsStatus for initialize parameters.
- //
- if (!mStopCheckAllApsStatus) {
- mStopCheckAllApsStatus = TRUE;
- TempStopCheckState = TRUE;
- }
-
- Status = EnableDisableApWorker (ProcessorNumber, EnableAP, HealthFlag);
-
- if (TempStopCheckState) {
- mStopCheckAllApsStatus = FALSE;
- }
-
- return Status;
-}
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