2 Common header file for MP Initialize Library.
4 Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
20 #include <Register/Cpuid.h>
21 #include <Register/Msr.h>
22 #include <Register/LocalApic.h>
23 #include <Register/Microcode.h>
25 #include <Library/MpInitLib.h>
26 #include <Library/BaseLib.h>
27 #include <Library/BaseMemoryLib.h>
28 #include <Library/MemoryAllocationLib.h>
29 #include <Library/DebugLib.h>
30 #include <Library/LocalApicLib.h>
31 #include <Library/CpuLib.h>
32 #include <Library/UefiCpuLib.h>
33 #include <Library/TimerLib.h>
34 #include <Library/SynchronizationLib.h>
35 #include <Library/MtrrLib.h>
36 #include <Library/HobLib.h>
38 #define WAKEUP_AP_SIGNAL SIGNATURE_32 ('S', 'T', 'A', 'P')
40 #define CPU_INIT_MP_LIB_HOB_GUID \
42 0x58eb6a19, 0x3699, 0x4c68, { 0xa8, 0x36, 0xda, 0xcd, 0x8e, 0xdc, 0xad, 0x4a } \
46 // The MP data for switch BSP
48 #define CPU_SWITCH_STATE_IDLE 0
49 #define CPU_SWITCH_STATE_STORED 1
50 #define CPU_SWITCH_STATE_LOADED 2
53 // CPU exchange information for switch BSP
56 UINT8 State
; // offset 0
57 UINTN StackPointer
; // offset 4 / 8
58 IA32_DESCRIPTOR Gdtr
; // offset 8 / 16
59 IA32_DESCRIPTOR Idtr
; // offset 14 / 26
60 } CPU_EXCHANGE_ROLE_INFO
;
63 // AP loop state when APs are in idle state
64 // It's value is the same with PcdCpuApLoopMode
73 // AP initialization state during APs wakeup
84 // The state transitions for an AP when it process a procedure are:
85 // Idle ----> Ready ----> Busy ----> Idle
96 // CPU volatile registers around INIT-SIPI-SIPI
108 IA32_DESCRIPTOR Gdtr
;
109 IA32_DESCRIPTOR Idtr
;
111 } CPU_VOLATILE_REGISTERS
;
118 volatile UINT32
*StartupApSignal
;
119 volatile UINTN ApFunction
;
120 volatile UINTN ApFunctionArgument
;
122 volatile CPU_STATE State
;
123 CPU_VOLATILE_REGISTERS VolatileRegisters
;
133 // Basic CPU information saved in Guided HOB.
134 // Because the contents will be shard between PEI and DXE,
135 // we need to make sure the each fields offset same in different
140 UINT32 InitialApicId
;
148 // AP reset code information including code address and size,
149 // this structure will be shared be C code and assembly code.
150 // It is natural aligned by design.
153 UINT8
*RendezvousFunnelAddress
;
154 UINTN ModeEntryOffset
;
155 UINTN RendezvousFunnelSize
;
156 UINT8
*RelocateApLoopFuncAddress
;
157 UINTN RelocateApLoopFuncSize
;
158 UINTN ModeTransitionOffset
;
159 } MP_ASSEMBLY_ADDRESS_MAP
;
161 typedef struct _CPU_MP_DATA CPU_MP_DATA
;
166 // MP CPU exchange information for AP reset code
167 // This structure is required to be packed because fixed field offsets
168 // into this structure are used in assembly code in this module
175 IA32_DESCRIPTOR GdtrProfile
;
176 IA32_DESCRIPTOR IdtrProfile
;
182 UINTN EnableExecuteDisable
;
185 CPU_INFO_IN_HOB
*CpuInfo
;
186 UINTN NumApsExecuting
;
187 CPU_MP_DATA
*CpuMpData
;
188 UINTN InitializeFloatingPointUnitsAddress
;
189 UINT32 ModeTransitionMemory
;
190 UINT16 ModeTransitionSegment
;
191 UINT32 ModeHighMemory
;
192 UINT16 ModeHighSegment
;
193 } MP_CPU_EXCHANGE_INFO
;
198 // CPU MP Data save in memory
200 struct _CPU_MP_DATA
{
205 // The above fields data will be passed from PEI to DXE
206 // Please make sure the fields offset same in the different
211 UINTN CpuApStackSize
;
212 MP_ASSEMBLY_ADDRESS_MAP AddressMap
;
214 UINTN WakeupBufferHigh
;
216 UINTN BackupBufferSize
;
218 volatile UINT32 StartCount
;
219 volatile UINT32 FinishedCount
;
220 volatile UINT32 RunningCount
;
221 BOOLEAN SingleThread
;
222 EFI_AP_PROCEDURE Procedure
;
229 UINTN
**FailedCpuList
;
231 AP_INIT_STATE InitFlag
;
232 BOOLEAN X2ApicEnable
;
233 BOOLEAN SwitchBspFlag
;
235 CPU_EXCHANGE_ROLE_INFO BSPInfo
;
236 CPU_EXCHANGE_ROLE_INFO APInfo
;
237 MTRR_SETTINGS MtrrTable
;
239 UINT8 ApTargetCState
;
240 UINT16 PmCodeSegment
;
241 CPU_AP_DATA
*CpuData
;
242 volatile MP_CPU_EXCHANGE_INFO
*MpCpuExchangeInfo
;
244 UINT32 CurrentTimerCount
;
247 BOOLEAN PeriodicMode
;
248 BOOLEAN TimerInterruptState
;
249 UINT64 MicrocodePatchAddress
;
250 UINT64 MicrocodePatchRegionSize
;
252 UINT32 ProcessorSignature
;
253 UINT32 ProcessorFlags
;
254 UINT64 MicrocodeDataAddress
;
255 UINT32 MicrocodeRevision
;
258 // Whether need to use Init-Sipi-Sipi to wake up the APs.
259 // Two cases need to set this value to TRUE. One is in HLT
260 // loop mode, the other is resume from S3 which loop mode
261 // will be hardcode change to HLT mode by PiSmmCpuDxeSmm
264 BOOLEAN WakeUpByInitSipiSipi
;
267 extern EFI_GUID mCpuInitMpLibHobGuid
;
270 Assembly code to place AP into safe loop mode.
272 Place AP into targeted C-State if MONITOR is supported, otherwise
273 place AP into hlt state.
274 Place AP in protected mode if the current is long mode. Due to AP maybe
275 wakeup by some hardware event. It could avoid accessing page table that
276 may not available during booting to OS.
278 @param[in] MwaitSupport TRUE indicates MONITOR is supported.
279 FALSE indicates MONITOR is not supported.
280 @param[in] ApTargetCState Target C-State value.
281 @param[in] PmCodeSegment Protected mode code segment value.
285 (EFIAPI
* ASM_RELOCATE_AP_LOOP
) (
286 IN BOOLEAN MwaitSupport
,
287 IN UINTN ApTargetCState
,
288 IN UINTN PmCodeSegment
,
289 IN UINTN TopOfApStack
,
290 IN UINTN NumberToFinish
294 Assembly code to get starting address and size of the rendezvous entry for APs.
295 Information for fixing a jump instruction in the code is also returned.
297 @param[out] AddressMap Output buffer for address map information.
302 OUT MP_ASSEMBLY_ADDRESS_MAP
*AddressMap
306 This function is called by both the BSP and the AP which is to become the BSP to
307 Exchange execution context including stack between them. After return from this
308 function, the BSP becomes AP and the AP becomes the BSP.
310 @param[in] MyInfo Pointer to buffer holding the exchanging information for the executing processor.
311 @param[in] OthersInfo Pointer to buffer holding the exchanging information for the peer.
317 IN CPU_EXCHANGE_ROLE_INFO
*MyInfo
,
318 IN CPU_EXCHANGE_ROLE_INFO
*OthersInfo
322 Get the pointer to CPU MP Data structure.
324 @return The pointer to CPU MP Data structure.
332 Save the pointer to CPU MP Data structure.
334 @param[in] CpuMpData The pointer to CPU MP Data structure will be saved.
338 IN CPU_MP_DATA
*CpuMpData
343 Get available system memory below 1MB by specified size.
345 @param[in] WakeupBufferSize Wakeup buffer size required
347 @retval other Return wakeup buffer address below 1MB.
348 @retval -1 Cannot find free memory below 1MB.
352 IN UINTN WakeupBufferSize
356 Get available EfiBootServicesCode memory below 4GB by specified size.
358 This buffer is required to safely transfer AP from real address mode to
359 protected mode or long mode, due to the fact that the buffer returned by
360 GetWakeupBuffer() may be marked as non-executable.
362 @param[in] BufferSize Wakeup transition buffer size.
364 @retval other Return wakeup transition buffer address below 4GB.
365 @retval 0 Cannot find free memory below 4GB.
368 GetModeTransitionBuffer (
373 This function will be called by BSP to wakeup AP.
375 @param[in] CpuMpData Pointer to CPU MP Data
376 @param[in] Broadcast TRUE: Send broadcast IPI to all APs
377 FALSE: Send IPI to AP by ApicId
378 @param[in] ProcessorNumber The handle number of specified processor
379 @param[in] Procedure The function to be invoked by AP
380 @param[in] ProcedureArgument The argument to be passed into AP function
384 IN CPU_MP_DATA
*CpuMpData
,
385 IN BOOLEAN Broadcast
,
386 IN UINTN ProcessorNumber
,
387 IN EFI_AP_PROCEDURE Procedure
, OPTIONAL
388 IN VOID
*ProcedureArgument OPTIONAL
392 Initialize global data for MP support.
394 @param[in] CpuMpData The pointer to CPU MP Data structure.
398 IN CPU_MP_DATA
*CpuMpData
402 Worker function to execute a caller provided function on all enabled APs.
404 @param[in] Procedure A pointer to the function to be run on
405 enabled APs of the system.
406 @param[in] SingleThread If TRUE, then all the enabled APs execute
407 the function specified by Procedure one by
408 one, in ascending order of processor handle
409 number. If FALSE, then all the enabled APs
410 execute the function specified by Procedure
412 @param[in] WaitEvent The event created by the caller with CreateEvent()
414 @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
415 APs to return from Procedure, either for
416 blocking or non-blocking mode.
417 @param[in] ProcedureArgument The parameter passed into Procedure for
419 @param[out] FailedCpuList If all APs finish successfully, then its
420 content is set to NULL. If not all APs
421 finish before timeout expires, then its
422 content is set to address of the buffer
423 holding handle numbers of the failed APs.
425 @retval EFI_SUCCESS In blocking mode, all APs have finished before
427 @retval EFI_SUCCESS In non-blocking mode, function has been dispatched
429 @retval others Failed to Startup all APs.
433 StartupAllAPsWorker (
434 IN EFI_AP_PROCEDURE Procedure
,
435 IN BOOLEAN SingleThread
,
436 IN EFI_EVENT WaitEvent OPTIONAL
,
437 IN UINTN TimeoutInMicroseconds
,
438 IN VOID
*ProcedureArgument OPTIONAL
,
439 OUT UINTN
**FailedCpuList OPTIONAL
443 Worker function to let the caller get one enabled AP to execute a caller-provided
446 @param[in] Procedure A pointer to the function to be run on
447 enabled APs of the system.
448 @param[in] ProcessorNumber The handle number of the AP.
449 @param[in] WaitEvent The event created by the caller with CreateEvent()
451 @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for
452 APs to return from Procedure, either for
453 blocking or non-blocking mode.
454 @param[in] ProcedureArgument The parameter passed into Procedure for
456 @param[out] Finished If AP returns from Procedure before the
457 timeout expires, its content is set to TRUE.
458 Otherwise, the value is set to FALSE.
460 @retval EFI_SUCCESS In blocking mode, specified AP finished before
462 @retval others Failed to Startup AP.
466 StartupThisAPWorker (
467 IN EFI_AP_PROCEDURE Procedure
,
468 IN UINTN ProcessorNumber
,
469 IN EFI_EVENT WaitEvent OPTIONAL
,
470 IN UINTN TimeoutInMicroseconds
,
471 IN VOID
*ProcedureArgument OPTIONAL
,
472 OUT BOOLEAN
*Finished OPTIONAL
476 Worker function to switch the requested AP to be the BSP from that point onward.
478 @param[in] ProcessorNumber The handle number of AP that is to become the new BSP.
479 @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an
480 enabled AP. Otherwise, it will be disabled.
482 @retval EFI_SUCCESS BSP successfully switched.
483 @retval others Failed to switch BSP.
488 IN UINTN ProcessorNumber
,
489 IN BOOLEAN EnableOldBSP
493 Worker function to let the caller enable or disable an AP from this point onward.
494 This service may only be called from the BSP.
496 @param[in] ProcessorNumber The handle number of AP.
497 @param[in] EnableAP Specifies the new state for the processor for
498 enabled, FALSE for disabled.
499 @param[in] HealthFlag If not NULL, a pointer to a value that specifies
500 the new health status of the AP.
502 @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.
503 @retval others Failed to Enable/Disable AP.
507 EnableDisableApWorker (
508 IN UINTN ProcessorNumber
,
510 IN UINT32
*HealthFlag OPTIONAL
514 Get pointer to CPU MP Data structure from GUIDed HOB.
516 @return The pointer to CPU MP Data structure.
519 GetCpuMpDataFromGuidedHob (
523 /** Checks status of specified AP.
525 This function checks whether the specified AP has finished the task assigned
526 by StartupThisAP(), and whether timeout expires.
528 @param[in] ProcessorNumber The handle number of processor.
530 @retval EFI_SUCCESS Specified AP has finished task assigned by StartupThisAPs().
531 @retval EFI_TIMEOUT The timeout expires.
532 @retval EFI_NOT_READY Specified AP has not finished task and timeout has not expired.
536 IN UINTN ProcessorNumber
540 Checks status of all APs.
542 This function checks whether all APs have finished task assigned by StartupAllAPs(),
543 and whether timeout expires.
545 @retval EFI_SUCCESS All APs have finished task assigned by StartupAllAPs().
546 @retval EFI_TIMEOUT The timeout expires.
547 @retval EFI_NOT_READY APs have not finished task and timeout has not expired.
555 Checks APs status and updates APs status if needed.
559 CheckAndUpdateApsStatus (
564 Detect whether specified processor can find matching microcode patch and load it.
566 @param[in] CpuMpData The pointer to CPU MP Data structure.
567 @param[in] IsBspCallIn Indicate whether the caller is BSP or not.
571 IN CPU_MP_DATA
*CpuMpData
,
572 IN BOOLEAN IsBspCallIn
576 Detect whether Mwait-monitor feature is supported.
578 @retval TRUE Mwait-monitor feature is supported.
579 @retval FALSE Mwait-monitor feature is not supported.
587 Enable Debug Agent to support source debugging on AP function.