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768e2a90 | 1 | /** @file\r |
2 | Produces PI MP Services Protocol on top of Framework MP Services Protocol.\r | |
3 | \r | |
4 | Intel's Framework MP Services Protocol is replaced by EFI_MP_SERVICES_PROTOCOL in PI 1.1.\r | |
5 | This module produces PI MP Services Protocol on top of Framework MP Services Protocol.\r | |
6 | \r | |
584d5652 HT |
7 | Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r |
8 | This program and the accompanying materials\r | |
768e2a90 | 9 | are licensed and made available under the terms and conditions of the BSD License\r |
10 | which accompanies this distribution. The full text of the license may be found at\r | |
11 | http://opensource.org/licenses/bsd-license.php\r | |
12 | \r | |
13 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
14 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
15 | Module Name:\r | |
16 | \r | |
17 | **/\r | |
18 | \r | |
19 | #include "MpServicesOnFrameworkMpServicesThunk.h"\r | |
20 | \r | |
21 | EFI_HANDLE mHandle = NULL;\r | |
22 | MP_SYSTEM_DATA mMPSystemData;\r | |
23 | EFI_PHYSICAL_ADDRESS mStartupVector;\r | |
24 | MP_CPU_EXCHANGE_INFO *mExchangeInfo;\r | |
768e2a90 | 25 | BOOLEAN mStopCheckAPsStatus = FALSE;\r |
26 | UINTN mNumberOfProcessors;\r | |
27 | EFI_GENERIC_MEMORY_TEST_PROTOCOL *mGenMemoryTest;\r | |
28 | \r | |
29 | FRAMEWORK_EFI_MP_SERVICES_PROTOCOL *mFrameworkMpService;\r | |
30 | EFI_MP_SERVICES_PROTOCOL mMpService = {\r | |
31 | GetNumberOfProcessors,\r | |
32 | GetProcessorInfo,\r | |
33 | StartupAllAPs,\r | |
34 | StartupThisAP,\r | |
35 | SwitchBSP,\r | |
36 | EnableDisableAP,\r | |
37 | WhoAmI\r | |
38 | };\r | |
39 | \r | |
40 | \r | |
41 | /**\r | |
42 | Implementation of GetNumberOfProcessors() service of MP Services Protocol.\r | |
43 | \r | |
44 | This service retrieves the number of logical processor in the platform\r | |
45 | and the number of those logical processors that are enabled on this boot.\r | |
46 | This service may only be called from the BSP.\r | |
47 | \r | |
48 | @param This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
49 | @param NumberOfProcessors Pointer to the total number of logical processors in the system,\r | |
50 | including the BSP and disabled APs.\r | |
51 | @param NumberOfEnabledProcessors Pointer to the number of enabled logical processors that exist\r | |
52 | in system, including the BSP.\r | |
53 | \r | |
54 | @retval EFI_SUCCESS Number of logical processors and enabled logical processors retrieved..\r | |
55 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
56 | @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL\r | |
57 | @retval EFI_INVALID_PARAMETER NumberOfEnabledProcessors is NULL\r | |
58 | \r | |
59 | **/\r | |
60 | EFI_STATUS\r | |
61 | EFIAPI\r | |
62 | GetNumberOfProcessors (\r | |
63 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
64 | OUT UINTN *NumberOfProcessors,\r | |
65 | OUT UINTN *NumberOfEnabledProcessors\r | |
66 | )\r | |
67 | {\r | |
68 | EFI_STATUS Status;\r | |
69 | UINTN CallerNumber;\r | |
70 | \r | |
71 | //\r | |
72 | // Check whether caller processor is BSP\r | |
73 | //\r | |
74 | WhoAmI (This, &CallerNumber);\r | |
75 | if (CallerNumber != GetBspNumber ()) {\r | |
76 | return EFI_DEVICE_ERROR;\r | |
77 | }\r | |
78 | \r | |
79 | //\r | |
80 | // Check parameter NumberOfProcessors\r | |
81 | //\r | |
82 | if (NumberOfProcessors == NULL) {\r | |
83 | return EFI_INVALID_PARAMETER;\r | |
84 | }\r | |
85 | \r | |
86 | //\r | |
87 | // Check parameter NumberOfEnabledProcessors\r | |
88 | //\r | |
89 | if (NumberOfEnabledProcessors == NULL) {\r | |
90 | return EFI_INVALID_PARAMETER;\r | |
91 | }\r | |
92 | \r | |
93 | Status = mFrameworkMpService->GetGeneralMPInfo (\r | |
94 | mFrameworkMpService,\r | |
95 | NumberOfProcessors,\r | |
96 | NULL,\r | |
97 | NumberOfEnabledProcessors,\r | |
98 | NULL,\r | |
99 | NULL\r | |
100 | );\r | |
101 | ASSERT_EFI_ERROR (Status);\r | |
102 | \r | |
103 | return EFI_SUCCESS;\r | |
104 | }\r | |
105 | \r | |
106 | /**\r | |
107 | Implementation of GetNumberOfProcessors() service of MP Services Protocol.\r | |
108 | \r | |
109 | Gets detailed MP-related information on the requested processor at the\r | |
110 | instant this call is made. This service may only be called from the BSP.\r | |
111 | \r | |
112 | @param This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
113 | @param ProcessorNumber The handle number of processor.\r | |
114 | @param ProcessorInfoBuffer A pointer to the buffer where information for the requested processor is deposited.\r | |
115 | \r | |
116 | @retval EFI_SUCCESS Processor information successfully returned.\r | |
117 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
118 | @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL\r | |
de243ee4 | 119 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber does not exist.\r |
768e2a90 | 120 | \r |
121 | **/\r | |
122 | EFI_STATUS\r | |
123 | EFIAPI\r | |
124 | GetProcessorInfo (\r | |
125 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
126 | IN UINTN ProcessorNumber,\r | |
127 | OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer\r | |
128 | )\r | |
129 | {\r | |
130 | EFI_STATUS Status;\r | |
131 | UINTN CallerNumber;\r | |
132 | UINTN BufferSize;\r | |
133 | EFI_MP_PROC_CONTEXT ProcessorContextBuffer;\r | |
134 | \r | |
135 | //\r | |
136 | // Check whether caller processor is BSP\r | |
137 | //\r | |
138 | WhoAmI (This, &CallerNumber);\r | |
139 | if (CallerNumber != GetBspNumber ()) {\r | |
140 | return EFI_DEVICE_ERROR;\r | |
141 | }\r | |
142 | \r | |
143 | //\r | |
144 | // Check parameter ProcessorInfoBuffer\r | |
145 | //\r | |
146 | if (ProcessorInfoBuffer == NULL) {\r | |
147 | return EFI_INVALID_PARAMETER;\r | |
148 | }\r | |
149 | \r | |
150 | //\r | |
151 | // Check whether processor with the handle specified by ProcessorNumber exists\r | |
152 | //\r | |
153 | if (ProcessorNumber >= mNumberOfProcessors) {\r | |
154 | return EFI_NOT_FOUND;\r | |
155 | }\r | |
156 | \r | |
157 | BufferSize = sizeof (EFI_MP_PROC_CONTEXT);\r | |
158 | Status = mFrameworkMpService->GetProcessorContext (\r | |
159 | mFrameworkMpService,\r | |
160 | ProcessorNumber,\r | |
161 | &BufferSize,\r | |
162 | &ProcessorContextBuffer\r | |
163 | );\r | |
164 | ASSERT_EFI_ERROR (Status);\r | |
165 | \r | |
166 | ProcessorInfoBuffer->ProcessorId = (UINT64) ProcessorContextBuffer.ApicID;\r | |
de243ee4 | 167 | \r |
768e2a90 | 168 | //\r |
169 | // Get Status Flag of specified processor\r | |
170 | //\r | |
171 | ProcessorInfoBuffer->StatusFlag = 0;\r | |
172 | \r | |
173 | if (ProcessorContextBuffer.Enabled) {\r | |
174 | ProcessorInfoBuffer->StatusFlag |= PROCESSOR_ENABLED_BIT;\r | |
175 | }\r | |
176 | \r | |
177 | if (ProcessorContextBuffer.Designation == EfiCpuBSP) {\r | |
178 | ProcessorInfoBuffer->StatusFlag |= PROCESSOR_AS_BSP_BIT;\r | |
179 | }\r | |
180 | \r | |
181 | if (ProcessorContextBuffer.Health.Flags.Uint32 == 0) {\r | |
182 | ProcessorInfoBuffer->StatusFlag |= PROCESSOR_HEALTH_STATUS_BIT;\r | |
183 | }\r | |
184 | \r | |
185 | ProcessorInfoBuffer->Location.Package = (UINT32) ProcessorContextBuffer.PackageNumber;\r | |
186 | ProcessorInfoBuffer->Location.Core = (UINT32) ProcessorContextBuffer.NumberOfCores;\r | |
187 | ProcessorInfoBuffer->Location.Thread = (UINT32) ProcessorContextBuffer.NumberOfThreads;\r | |
188 | \r | |
189 | return EFI_SUCCESS;\r | |
190 | }\r | |
191 | \r | |
192 | /**\r | |
193 | Implementation of StartupAllAPs() service of MP Services Protocol.\r | |
194 | \r | |
195 | This service lets the caller get all enabled APs to execute a caller-provided function.\r | |
196 | This service may only be called from the BSP.\r | |
197 | \r | |
198 | @param This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
199 | @param Procedure A pointer to the function to be run on enabled APs of the system.\r | |
200 | @param SingleThread Indicates whether to execute the function simultaneously or one by one..\r | |
201 | @param WaitEvent The event created by the caller.\r | |
202 | If it is NULL, then execute in blocking mode.\r | |
203 | If it is not NULL, then execute in non-blocking mode.\r | |
204 | @param TimeoutInMicroSeconds The time limit in microseconds for this AP to finish the function.\r | |
205 | Zero means infinity.\r | |
206 | @param ProcedureArgument Pointer to the optional parameter of the assigned function.\r | |
207 | @param FailedCpuList The list of processor numbers that fail to finish the function before\r | |
208 | TimeoutInMicrosecsond expires.\r | |
209 | \r | |
de243ee4 | 210 | @retval EFI_SUCCESS In blocking mode, all APs have finished before the timeout expired.\r |
768e2a90 | 211 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched to all enabled APs.\r |
212 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
213 | @retval EFI_NOT_STARTED No enabled AP exists in the system.\r | |
214 | @retval EFI_NOT_READY Any enabled AP is busy.\r | |
215 | @retval EFI_TIMEOUT In blocking mode, The timeout expired before all enabled APs have finished.\r | |
216 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
217 | \r | |
218 | **/\r | |
219 | EFI_STATUS\r | |
220 | EFIAPI\r | |
221 | StartupAllAPs (\r | |
222 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
223 | IN EFI_AP_PROCEDURE Procedure,\r | |
224 | IN BOOLEAN SingleThread,\r | |
225 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
226 | IN UINTN TimeoutInMicroSeconds,\r | |
227 | IN VOID *ProcedureArgument OPTIONAL,\r | |
228 | OUT UINTN **FailedCpuList OPTIONAL\r | |
229 | )\r | |
230 | {\r | |
231 | EFI_STATUS Status;\r | |
232 | UINTN ProcessorNumber;\r | |
233 | CPU_DATA_BLOCK *CpuData;\r | |
234 | BOOLEAN Blocking;\r | |
235 | UINTN BspNumber;\r | |
236 | \r | |
237 | if (FailedCpuList != NULL) {\r | |
238 | *FailedCpuList = NULL;\r | |
239 | }\r | |
240 | \r | |
241 | //\r | |
242 | // Check whether caller processor is BSP\r | |
243 | //\r | |
244 | BspNumber = GetBspNumber ();\r | |
245 | WhoAmI (This, &ProcessorNumber);\r | |
246 | if (ProcessorNumber != BspNumber) {\r | |
247 | return EFI_DEVICE_ERROR;\r | |
248 | }\r | |
249 | \r | |
250 | //\r | |
251 | // Check parameter Procedure\r | |
252 | //\r | |
253 | if (Procedure == NULL) {\r | |
254 | return EFI_INVALID_PARAMETER;\r | |
255 | }\r | |
256 | \r | |
257 | //\r | |
258 | // Temporarily suppress CheckAPsStatus()\r | |
259 | //\r | |
260 | mStopCheckAPsStatus = TRUE;\r | |
261 | \r | |
262 | //\r | |
263 | // Check whether all enabled APs are idle.\r | |
264 | // If any enabled AP is not idle, return EFI_NOT_READY.\r | |
265 | //\r | |
266 | for (ProcessorNumber = 0; ProcessorNumber < mNumberOfProcessors; ProcessorNumber++) {\r | |
267 | \r | |
268 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r | |
269 | \r | |
270 | mMPSystemData.CpuList[ProcessorNumber] = FALSE;\r | |
271 | if (ProcessorNumber != BspNumber) {\r | |
272 | if (CpuData->State != CpuStateDisabled) {\r | |
273 | if (CpuData->State != CpuStateIdle) {\r | |
274 | mStopCheckAPsStatus = FALSE;\r | |
275 | return EFI_NOT_READY;\r | |
276 | } else {\r | |
de243ee4 | 277 | //\r |
768e2a90 | 278 | // Mark this processor as responsible for current calling.\r |
279 | //\r | |
280 | mMPSystemData.CpuList[ProcessorNumber] = TRUE;\r | |
281 | }\r | |
282 | }\r | |
283 | }\r | |
284 | }\r | |
285 | \r | |
286 | mMPSystemData.FinishCount = 0;\r | |
287 | mMPSystemData.StartCount = 0;\r | |
288 | Blocking = FALSE;\r | |
289 | //\r | |
290 | // Go through all enabled APs to wakeup them for Procedure.\r | |
291 | // If in Single Thread mode, then only one AP is woken up, and others are waiting.\r | |
292 | //\r | |
293 | for (ProcessorNumber = 0; ProcessorNumber < mNumberOfProcessors; ProcessorNumber++) {\r | |
294 | \r | |
295 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r | |
296 | //\r | |
297 | // Check whether this processor is responsible for current calling.\r | |
298 | //\r | |
299 | if (mMPSystemData.CpuList[ProcessorNumber]) {\r | |
300 | \r | |
301 | mMPSystemData.StartCount++;\r | |
302 | \r | |
303 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
304 | CpuData->State = CpuStateReady;\r | |
305 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
306 | \r | |
307 | if (!Blocking) {\r | |
308 | WakeUpAp (\r | |
309 | ProcessorNumber,\r | |
310 | Procedure,\r | |
311 | ProcedureArgument\r | |
312 | );\r | |
313 | }\r | |
314 | \r | |
315 | if (SingleThread) {\r | |
316 | Blocking = TRUE;\r | |
317 | }\r | |
318 | }\r | |
319 | }\r | |
de243ee4 | 320 | \r |
768e2a90 | 321 | //\r |
322 | // If no enabled AP exists, return EFI_NOT_STARTED.\r | |
323 | //\r | |
324 | if (mMPSystemData.StartCount == 0) {\r | |
325 | mStopCheckAPsStatus = FALSE;\r | |
326 | return EFI_NOT_STARTED;\r | |
327 | }\r | |
328 | \r | |
329 | //\r | |
330 | // If WaitEvent is not NULL, execute in non-blocking mode.\r | |
331 | // BSP saves data for CheckAPsStatus(), and returns EFI_SUCCESS.\r | |
332 | // CheckAPsStatus() will check completion and timeout periodically.\r | |
333 | //\r | |
334 | mMPSystemData.Procedure = Procedure;\r | |
335 | mMPSystemData.ProcArguments = ProcedureArgument;\r | |
336 | mMPSystemData.SingleThread = SingleThread;\r | |
337 | mMPSystemData.FailedCpuList = FailedCpuList;\r | |
338 | mMPSystemData.ExpectedTime = CalculateTimeout (TimeoutInMicroSeconds, &mMPSystemData.CurrentTime);\r | |
339 | mMPSystemData.WaitEvent = WaitEvent;\r | |
340 | \r | |
341 | //\r | |
342 | // Allow CheckAPsStatus()\r | |
343 | //\r | |
344 | mStopCheckAPsStatus = FALSE;\r | |
345 | \r | |
346 | if (WaitEvent != NULL) {\r | |
347 | return EFI_SUCCESS;\r | |
348 | }\r | |
349 | \r | |
350 | //\r | |
351 | // If WaitEvent is NULL, execute in blocking mode.\r | |
352 | // BSP checks APs'state until all APs finish or TimeoutInMicrosecsond expires.\r | |
353 | //\r | |
354 | do {\r | |
355 | Status = CheckAllAPs ();\r | |
356 | } while (Status == EFI_NOT_READY);\r | |
357 | \r | |
358 | return Status;\r | |
359 | }\r | |
360 | \r | |
361 | /**\r | |
362 | Implementation of StartupThisAP() service of MP Services Protocol.\r | |
363 | \r | |
364 | This service lets the caller get one enabled AP to execute a caller-provided function.\r | |
365 | This service may only be called from the BSP.\r | |
366 | \r | |
367 | @param This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
368 | @param Procedure A pointer to the function to be run on the designated AP.\r | |
369 | @param ProcessorNumber The handle number of AP..\r | |
370 | @param WaitEvent The event created by the caller.\r | |
371 | If it is NULL, then execute in blocking mode.\r | |
372 | If it is not NULL, then execute in non-blocking mode.\r | |
373 | @param TimeoutInMicroseconds The time limit in microseconds for this AP to finish the function.\r | |
374 | Zero means infinity.\r | |
375 | @param ProcedureArgument Pointer to the optional parameter of the assigned function.\r | |
376 | @param Finished Indicates whether AP has finished assigned function.\r | |
377 | In blocking mode, it is ignored.\r | |
378 | \r | |
379 | @retval EFI_SUCCESS In blocking mode, specified AP has finished before the timeout expires.\r | |
380 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched to specified AP.\r | |
381 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
382 | @retval EFI_TIMEOUT In blocking mode, the timeout expires before specified AP has finished.\r | |
383 | @retval EFI_NOT_READY Specified AP is busy.\r | |
384 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber does not exist.\r | |
385 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
386 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
387 | \r | |
388 | **/\r | |
389 | EFI_STATUS\r | |
390 | EFIAPI\r | |
391 | StartupThisAP (\r | |
392 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
393 | IN EFI_AP_PROCEDURE Procedure,\r | |
394 | IN UINTN ProcessorNumber,\r | |
395 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
396 | IN UINTN TimeoutInMicroseconds,\r | |
397 | IN VOID *ProcedureArgument OPTIONAL,\r | |
398 | OUT BOOLEAN *Finished OPTIONAL\r | |
399 | )\r | |
400 | {\r | |
401 | CPU_DATA_BLOCK *CpuData;\r | |
402 | UINTN CallerNumber;\r | |
403 | EFI_STATUS Status;\r | |
404 | UINTN BspNumber;\r | |
405 | \r | |
406 | if (Finished != NULL) {\r | |
407 | *Finished = TRUE;\r | |
408 | }\r | |
409 | \r | |
410 | //\r | |
411 | // Check whether caller processor is BSP\r | |
412 | //\r | |
413 | BspNumber = GetBspNumber ();\r | |
414 | WhoAmI (This, &CallerNumber);\r | |
415 | if (CallerNumber != BspNumber) {\r | |
416 | return EFI_DEVICE_ERROR;\r | |
417 | }\r | |
418 | \r | |
419 | //\r | |
420 | // Check whether processor with the handle specified by ProcessorNumber exists\r | |
421 | //\r | |
422 | if (ProcessorNumber >= mNumberOfProcessors) {\r | |
423 | return EFI_NOT_FOUND;\r | |
424 | }\r | |
425 | \r | |
426 | //\r | |
427 | // Check whether specified processor is BSP\r | |
428 | //\r | |
429 | if (ProcessorNumber == BspNumber) {\r | |
430 | return EFI_INVALID_PARAMETER;\r | |
431 | }\r | |
432 | \r | |
433 | //\r | |
434 | // Check parameter Procedure\r | |
435 | //\r | |
436 | if (Procedure == NULL) {\r | |
437 | return EFI_INVALID_PARAMETER;\r | |
438 | }\r | |
439 | \r | |
440 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r | |
441 | \r | |
442 | //\r | |
443 | // Temporarily suppress CheckAPsStatus()\r | |
444 | //\r | |
445 | mStopCheckAPsStatus = TRUE;\r | |
446 | \r | |
447 | //\r | |
448 | // Check whether specified AP is disabled\r | |
449 | //\r | |
450 | if (CpuData->State == CpuStateDisabled) {\r | |
451 | mStopCheckAPsStatus = FALSE;\r | |
452 | return EFI_INVALID_PARAMETER;\r | |
453 | }\r | |
454 | \r | |
455 | //\r | |
456 | // Check whether specified AP is busy\r | |
457 | //\r | |
458 | if (CpuData->State != CpuStateIdle) {\r | |
459 | mStopCheckAPsStatus = FALSE;\r | |
460 | return EFI_NOT_READY;\r | |
461 | }\r | |
462 | \r | |
463 | //\r | |
464 | // Wakeup specified AP for Procedure.\r | |
465 | //\r | |
466 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
467 | CpuData->State = CpuStateReady;\r | |
468 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
469 | \r | |
470 | WakeUpAp (\r | |
471 | ProcessorNumber,\r | |
472 | Procedure,\r | |
473 | ProcedureArgument\r | |
474 | );\r | |
475 | \r | |
476 | //\r | |
477 | // If WaitEvent is not NULL, execute in non-blocking mode.\r | |
478 | // BSP saves data for CheckAPsStatus(), and returns EFI_SUCCESS.\r | |
479 | // CheckAPsStatus() will check completion and timeout periodically.\r | |
480 | //\r | |
481 | CpuData->WaitEvent = WaitEvent;\r | |
482 | CpuData->Finished = Finished;\r | |
483 | CpuData->ExpectedTime = CalculateTimeout (TimeoutInMicroseconds, &CpuData->CurrentTime);\r | |
484 | \r | |
485 | //\r | |
486 | // Allow CheckAPsStatus()\r | |
487 | //\r | |
488 | mStopCheckAPsStatus = FALSE;\r | |
489 | \r | |
490 | if (WaitEvent != NULL) {\r | |
491 | return EFI_SUCCESS;\r | |
492 | }\r | |
493 | \r | |
494 | //\r | |
495 | // If WaitEvent is NULL, execute in blocking mode.\r | |
496 | // BSP checks AP's state until it finishes or TimeoutInMicrosecsond expires.\r | |
497 | //\r | |
498 | do {\r | |
499 | Status = CheckThisAP (ProcessorNumber);\r | |
500 | } while (Status == EFI_NOT_READY);\r | |
501 | \r | |
502 | return Status;\r | |
503 | }\r | |
504 | \r | |
505 | /**\r | |
506 | Implementation of SwitchBSP() service of MP Services Protocol.\r | |
507 | \r | |
508 | This service switches the requested AP to be the BSP from that point onward.\r | |
509 | This service may only be called from the current BSP.\r | |
510 | \r | |
511 | @param This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
512 | @param ProcessorNumber The handle number of processor.\r | |
513 | @param EnableOldBSP Whether to enable or disable the original BSP.\r | |
514 | \r | |
515 | @retval EFI_SUCCESS BSP successfully switched.\r | |
516 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
517 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber does not exist.\r | |
518 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
519 | @retval EFI_NOT_READY Specified AP is busy.\r | |
520 | \r | |
521 | **/\r | |
522 | EFI_STATUS\r | |
523 | EFIAPI\r | |
524 | SwitchBSP (\r | |
525 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
526 | IN UINTN ProcessorNumber,\r | |
527 | IN BOOLEAN EnableOldBSP\r | |
528 | )\r | |
529 | {\r | |
530 | EFI_STATUS Status;\r | |
531 | CPU_DATA_BLOCK *CpuData;\r | |
532 | UINTN CallerNumber;\r | |
533 | UINTN BspNumber;\r | |
74f89527 | 534 | UINTN ApicBase;\r |
535 | UINT32 CurrentTimerValue;\r | |
536 | UINT32 CurrentTimerRegister;\r | |
537 | UINT32 CurrentTimerDivide;\r | |
538 | UINT64 CurrentTscValue;\r | |
539 | BOOLEAN OldInterruptState;\r | |
768e2a90 | 540 | \r |
541 | //\r | |
542 | // Check whether caller processor is BSP\r | |
543 | //\r | |
544 | BspNumber = GetBspNumber ();\r | |
545 | WhoAmI (This, &CallerNumber);\r | |
546 | if (CallerNumber != BspNumber) {\r | |
547 | return EFI_DEVICE_ERROR;\r | |
548 | }\r | |
549 | \r | |
550 | //\r | |
551 | // Check whether processor with the handle specified by ProcessorNumber exists\r | |
552 | //\r | |
553 | if (ProcessorNumber >= mNumberOfProcessors) {\r | |
554 | return EFI_NOT_FOUND;\r | |
555 | }\r | |
556 | \r | |
557 | //\r | |
558 | // Check whether specified processor is BSP\r | |
559 | //\r | |
560 | if (ProcessorNumber == BspNumber) {\r | |
561 | return EFI_INVALID_PARAMETER;\r | |
562 | }\r | |
563 | \r | |
564 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r | |
565 | \r | |
566 | //\r | |
567 | // Check whether specified AP is disabled\r | |
568 | //\r | |
569 | if (CpuData->State == CpuStateDisabled) {\r | |
570 | return EFI_INVALID_PARAMETER;\r | |
571 | }\r | |
572 | \r | |
573 | //\r | |
574 | // Check whether specified AP is busy\r | |
575 | //\r | |
576 | if (CpuData->State != CpuStateIdle) {\r | |
577 | return EFI_NOT_READY;\r | |
578 | }\r | |
579 | \r | |
74f89527 | 580 | //\r |
581 | // Save and disable interrupt.\r | |
582 | //\r | |
583 | OldInterruptState = SaveAndDisableInterrupts ();\r | |
584 | \r | |
585 | //\r | |
586 | // Record the current local APIC timer setting of BSP\r | |
587 | //\r | |
588 | ApicBase = (UINTN)AsmMsrBitFieldRead64 (MSR_IA32_APIC_BASE, 12, 35) << 12;\r | |
589 | CurrentTimerValue = MmioRead32 (ApicBase + APIC_REGISTER_TIMER_COUNT);\r | |
590 | CurrentTimerRegister = MmioRead32 (ApicBase + APIC_REGISTER_LVT_TIMER);\r | |
591 | CurrentTimerDivide = MmioRead32 (ApicBase + APIC_REGISTER_TIMER_DIVIDE);\r | |
592 | //\r | |
593 | // Set mask bit (BIT 16) of LVT Timer Register to disable its interrupt\r | |
594 | //\r | |
595 | MmioBitFieldWrite32 (ApicBase + APIC_REGISTER_LVT_TIMER, 16, 16, 1);\r | |
596 | \r | |
597 | //\r | |
598 | // Record the current TSC value\r | |
599 | //\r | |
600 | CurrentTscValue = AsmReadTsc ();\r | |
601 | \r | |
768e2a90 | 602 | Status = mFrameworkMpService->SwitchBSP (\r |
603 | mFrameworkMpService,\r | |
604 | ProcessorNumber,\r | |
605 | EnableOldBSP\r | |
606 | );\r | |
607 | ASSERT_EFI_ERROR (Status);\r | |
608 | \r | |
74f89527 | 609 | //\r |
610 | // Restore TSC value\r | |
611 | //\r | |
612 | AsmWriteMsr64 (MSR_IA32_TIME_STAMP_COUNTER, CurrentTscValue);\r | |
613 | \r | |
614 | //\r | |
615 | // Restore local APIC timer setting to new BSP\r | |
616 | //\r | |
617 | MmioWrite32 (ApicBase + APIC_REGISTER_TIMER_DIVIDE, CurrentTimerDivide);\r | |
618 | MmioWrite32 (ApicBase + APIC_REGISTER_TIMER_INIT_COUNT, CurrentTimerValue);\r | |
619 | MmioWrite32 (ApicBase + APIC_REGISTER_LVT_TIMER, CurrentTimerRegister);\r | |
620 | \r | |
621 | //\r | |
622 | // Restore interrupt state.\r | |
623 | //\r | |
624 | SetInterruptState (OldInterruptState);\r | |
625 | \r | |
768e2a90 | 626 | ChangeCpuState (BspNumber, EnableOldBSP);\r |
627 | \r | |
628 | return EFI_SUCCESS;\r | |
629 | }\r | |
630 | \r | |
631 | /**\r | |
632 | Implementation of EnableDisableAP() service of MP Services Protocol.\r | |
633 | \r | |
634 | This service lets the caller enable or disable an AP.\r | |
635 | This service may only be called from the BSP.\r | |
636 | \r | |
637 | @param This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
638 | @param ProcessorNumber The handle number of processor.\r | |
639 | @param EnableAP Indicates whether the newstate of the AP is enabled or disabled.\r | |
640 | @param HealthFlag Indicates new health state of the AP..\r | |
641 | \r | |
642 | @retval EFI_SUCCESS AP successfully enabled or disabled.\r | |
643 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
644 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber does not exist.\r | |
645 | @retval EFI_INVALID_PARAMETERS ProcessorNumber specifies the BSP.\r | |
de243ee4 | 646 | \r |
768e2a90 | 647 | **/\r |
648 | EFI_STATUS\r | |
649 | EFIAPI\r | |
650 | EnableDisableAP (\r | |
651 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
652 | IN UINTN ProcessorNumber,\r | |
653 | IN BOOLEAN EnableAP,\r | |
654 | IN UINT32 *HealthFlag OPTIONAL\r | |
655 | )\r | |
656 | {\r | |
657 | EFI_STATUS Status;\r | |
658 | UINTN CallerNumber;\r | |
659 | EFI_MP_HEALTH HealthState;\r | |
660 | EFI_MP_HEALTH *HealthStatePointer;\r | |
661 | UINTN BspNumber;\r | |
662 | \r | |
663 | //\r | |
664 | // Check whether caller processor is BSP\r | |
665 | //\r | |
666 | BspNumber = GetBspNumber ();\r | |
667 | WhoAmI (This, &CallerNumber);\r | |
668 | if (CallerNumber != BspNumber) {\r | |
669 | return EFI_DEVICE_ERROR;\r | |
670 | }\r | |
671 | \r | |
672 | //\r | |
673 | // Check whether processor with the handle specified by ProcessorNumber exists\r | |
674 | //\r | |
675 | if (ProcessorNumber >= mNumberOfProcessors) {\r | |
676 | return EFI_NOT_FOUND;\r | |
677 | }\r | |
678 | \r | |
679 | //\r | |
680 | // Check whether specified processor is BSP\r | |
681 | //\r | |
682 | if (ProcessorNumber == BspNumber) {\r | |
683 | return EFI_INVALID_PARAMETER;\r | |
684 | }\r | |
685 | \r | |
686 | if (HealthFlag == NULL) {\r | |
687 | HealthStatePointer = NULL;\r | |
688 | } else {\r | |
689 | if ((*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT) == 0) {\r | |
690 | HealthState.Flags.Uint32 = 1;\r | |
691 | } else {\r | |
692 | HealthState.Flags.Uint32 = 0;\r | |
693 | }\r | |
694 | HealthState.TestStatus = 0;\r | |
695 | \r | |
696 | HealthStatePointer = &HealthState;\r | |
697 | }\r | |
698 | \r | |
699 | Status = mFrameworkMpService->EnableDisableAP (\r | |
700 | mFrameworkMpService,\r | |
701 | ProcessorNumber,\r | |
702 | EnableAP,\r | |
703 | HealthStatePointer\r | |
704 | );\r | |
705 | ASSERT_EFI_ERROR (Status);\r | |
706 | \r | |
707 | ChangeCpuState (ProcessorNumber, EnableAP);\r | |
de243ee4 | 708 | \r |
768e2a90 | 709 | return EFI_SUCCESS;\r |
710 | }\r | |
711 | \r | |
712 | /**\r | |
713 | Implementation of WhoAmI() service of MP Services Protocol.\r | |
714 | \r | |
715 | This service lets the caller processor get its handle number.\r | |
716 | This service may be called from the BSP and APs.\r | |
717 | \r | |
718 | @param This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
719 | @param ProcessorNumber Pointer to the handle number of AP.\r | |
720 | \r | |
721 | @retval EFI_SUCCESS Processor number successfully returned.\r | |
722 | @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL\r | |
723 | \r | |
724 | **/\r | |
725 | EFI_STATUS\r | |
726 | EFIAPI\r | |
727 | WhoAmI (\r | |
728 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
729 | OUT UINTN *ProcessorNumber\r | |
730 | )\r | |
731 | {\r | |
732 | EFI_STATUS Status;\r | |
733 | \r | |
734 | if (ProcessorNumber == NULL) {\r | |
735 | return EFI_INVALID_PARAMETER;\r | |
736 | }\r | |
737 | \r | |
738 | Status = mFrameworkMpService->WhoAmI (\r | |
739 | mFrameworkMpService,\r | |
740 | ProcessorNumber\r | |
741 | );\r | |
742 | ASSERT_EFI_ERROR (Status);\r | |
743 | \r | |
744 | return EFI_SUCCESS;\r | |
745 | }\r | |
746 | \r | |
747 | /**\r | |
748 | Checks APs' status periodically.\r | |
749 | \r | |
750 | This function is triggerred by timer perodically to check the\r | |
751 | state of APs for StartupAllAPs() and StartupThisAP() executed\r | |
752 | in non-blocking mode.\r | |
753 | \r | |
754 | @param Event Event triggered.\r | |
755 | @param Context Parameter passed with the event.\r | |
756 | \r | |
757 | **/\r | |
758 | VOID\r | |
759 | EFIAPI\r | |
760 | CheckAPsStatus (\r | |
761 | IN EFI_EVENT Event,\r | |
762 | IN VOID *Context\r | |
763 | )\r | |
764 | {\r | |
765 | UINTN ProcessorNumber;\r | |
766 | CPU_DATA_BLOCK *CpuData;\r | |
767 | EFI_STATUS Status;\r | |
de243ee4 | 768 | \r |
768e2a90 | 769 | //\r |
770 | // If CheckAPsStatus() is stopped, then return immediately.\r | |
771 | //\r | |
772 | if (mStopCheckAPsStatus) {\r | |
773 | return;\r | |
774 | }\r | |
775 | \r | |
776 | //\r | |
777 | // First, check whether pending StartupAllAPs() exists.\r | |
778 | //\r | |
779 | if (mMPSystemData.WaitEvent != NULL) {\r | |
780 | \r | |
781 | Status = CheckAllAPs ();\r | |
782 | //\r | |
783 | // If all APs finish for StartupAllAPs(), signal the WaitEvent for it..\r | |
784 | //\r | |
785 | if (Status != EFI_NOT_READY) {\r | |
786 | Status = gBS->SignalEvent (mMPSystemData.WaitEvent);\r | |
787 | mMPSystemData.WaitEvent = NULL;\r | |
788 | }\r | |
789 | }\r | |
790 | \r | |
791 | //\r | |
792 | // Second, check whether pending StartupThisAPs() callings exist.\r | |
793 | //\r | |
794 | for (ProcessorNumber = 0; ProcessorNumber < mNumberOfProcessors; ProcessorNumber++) {\r | |
795 | \r | |
796 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r | |
797 | \r | |
798 | if (CpuData->WaitEvent == NULL) {\r | |
799 | continue;\r | |
800 | }\r | |
801 | \r | |
802 | Status = CheckThisAP (ProcessorNumber);\r | |
803 | \r | |
804 | if (Status != EFI_NOT_READY) {\r | |
805 | gBS->SignalEvent (CpuData->WaitEvent);\r | |
806 | CpuData->WaitEvent = NULL;\r | |
807 | }\r | |
808 | }\r | |
809 | return ;\r | |
810 | }\r | |
811 | \r | |
812 | /**\r | |
813 | Checks status of all APs.\r | |
814 | \r | |
815 | This function checks whether all APs have finished task assigned by StartupAllAPs(),\r | |
816 | and whether timeout expires.\r | |
817 | \r | |
818 | @retval EFI_SUCCESS All APs have finished task assigned by StartupAllAPs().\r | |
819 | @retval EFI_TIMEOUT The timeout expires.\r | |
820 | @retval EFI_NOT_READY APs have not finished task and timeout has not expired.\r | |
821 | \r | |
822 | **/\r | |
823 | EFI_STATUS\r | |
824 | CheckAllAPs (\r | |
825 | VOID\r | |
826 | )\r | |
827 | {\r | |
828 | UINTN ProcessorNumber;\r | |
829 | UINTN NextProcessorNumber;\r | |
830 | UINTN ListIndex;\r | |
831 | EFI_STATUS Status;\r | |
832 | CPU_STATE CpuState;\r | |
833 | CPU_DATA_BLOCK *CpuData;\r | |
834 | \r | |
835 | NextProcessorNumber = 0;\r | |
836 | \r | |
837 | //\r | |
838 | // Go through all APs that are responsible for the StartupAllAPs().\r | |
839 | //\r | |
840 | for (ProcessorNumber = 0; ProcessorNumber < mNumberOfProcessors; ProcessorNumber++) {\r | |
841 | if (!mMPSystemData.CpuList[ProcessorNumber]) {\r | |
842 | continue;\r | |
843 | }\r | |
844 | \r | |
845 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r | |
846 | \r | |
847 | //\r | |
848 | // Check the CPU state of AP. If it is CpuStateFinished, then the AP has finished its task.\r | |
849 | // Only BSP and corresponding AP access this unit of CPU Data. This means the AP will not modify the\r | |
850 | // value of state after setting the it to CpuStateFinished, so BSP can safely make use of its value.\r | |
851 | //\r | |
852 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
853 | CpuState = CpuData->State;\r | |
854 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
855 | \r | |
856 | if (CpuState == CpuStateFinished) {\r | |
857 | mMPSystemData.FinishCount++;\r | |
858 | mMPSystemData.CpuList[ProcessorNumber] = FALSE;\r | |
859 | \r | |
860 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
861 | CpuData->State = CpuStateIdle;\r | |
862 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
863 | \r | |
864 | //\r | |
865 | // If in Single Thread mode, then search for the next waiting AP for execution.\r | |
866 | //\r | |
867 | if (mMPSystemData.SingleThread) {\r | |
868 | Status = GetNextWaitingProcessorNumber (&NextProcessorNumber);\r | |
869 | \r | |
870 | if (!EFI_ERROR (Status)) {\r | |
871 | WakeUpAp (\r | |
872 | NextProcessorNumber,\r | |
873 | mMPSystemData.Procedure,\r | |
874 | mMPSystemData.ProcArguments\r | |
875 | );\r | |
876 | }\r | |
877 | }\r | |
878 | }\r | |
879 | }\r | |
880 | \r | |
881 | //\r | |
882 | // If all APs finish, return EFI_SUCCESS.\r | |
883 | //\r | |
884 | if (mMPSystemData.FinishCount == mMPSystemData.StartCount) {\r | |
885 | return EFI_SUCCESS;\r | |
886 | }\r | |
887 | \r | |
888 | //\r | |
889 | // If timeout expires, report timeout.\r | |
890 | //\r | |
891 | if (CheckTimeout (&mMPSystemData.CurrentTime, &mMPSystemData.TotalTime, mMPSystemData.ExpectedTime)) {\r | |
892 | //\r | |
893 | // If FailedCpuList is not NULL, record all failed APs in it.\r | |
894 | //\r | |
895 | if (mMPSystemData.FailedCpuList != NULL) {\r | |
896 | *mMPSystemData.FailedCpuList = AllocatePool ((mMPSystemData.StartCount - mMPSystemData.FinishCount + 1) * sizeof(UINTN));\r | |
897 | ASSERT (*mMPSystemData.FailedCpuList != NULL);\r | |
898 | }\r | |
899 | ListIndex = 0;\r | |
de243ee4 | 900 | \r |
768e2a90 | 901 | for (ProcessorNumber = 0; ProcessorNumber < mNumberOfProcessors; ProcessorNumber++) {\r |
902 | //\r | |
903 | // Check whether this processor is responsible for StartupAllAPs().\r | |
904 | //\r | |
905 | if (mMPSystemData.CpuList[ProcessorNumber]) {\r | |
906 | //\r | |
907 | // Reset failed APs to idle state\r | |
908 | //\r | |
909 | ResetProcessorToIdleState (ProcessorNumber);\r | |
910 | mMPSystemData.CpuList[ProcessorNumber] = FALSE;\r | |
911 | if (mMPSystemData.FailedCpuList != NULL) {\r | |
912 | (*mMPSystemData.FailedCpuList)[ListIndex++] = ProcessorNumber;\r | |
913 | }\r | |
914 | }\r | |
915 | }\r | |
916 | if (mMPSystemData.FailedCpuList != NULL) {\r | |
917 | (*mMPSystemData.FailedCpuList)[ListIndex] = END_OF_CPU_LIST;\r | |
918 | }\r | |
919 | return EFI_TIMEOUT;\r | |
920 | }\r | |
921 | return EFI_NOT_READY;\r | |
922 | }\r | |
923 | \r | |
924 | /**\r | |
925 | Checks status of specified AP.\r | |
926 | \r | |
927 | This function checks whether specified AP has finished task assigned by StartupThisAP(),\r | |
928 | and whether timeout expires.\r | |
929 | \r | |
930 | @param ProcessorNumber The handle number of processor.\r | |
931 | \r | |
932 | @retval EFI_SUCCESS Specified AP has finished task assigned by StartupThisAPs().\r | |
933 | @retval EFI_TIMEOUT The timeout expires.\r | |
934 | @retval EFI_NOT_READY Specified AP has not finished task and timeout has not expired.\r | |
935 | \r | |
936 | **/\r | |
937 | EFI_STATUS\r | |
938 | CheckThisAP (\r | |
939 | UINTN ProcessorNumber\r | |
940 | )\r | |
941 | {\r | |
942 | CPU_DATA_BLOCK *CpuData;\r | |
943 | CPU_STATE CpuState;\r | |
944 | \r | |
2d7b3c03 | 945 | ASSERT (ProcessorNumber < mNumberOfProcessors);\r |
45590862 | 946 | ASSERT (ProcessorNumber < MAX_CPU_NUMBER);\r |
2d7b3c03 | 947 | \r |
768e2a90 | 948 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r |
949 | \r | |
950 | //\r | |
951 | // Check the CPU state of AP. If it is CpuStateFinished, then the AP has finished its task.\r | |
952 | // Only BSP and corresponding AP access this unit of CPU Data. This means the AP will not modify the\r | |
953 | // value of state after setting the it to CpuStateFinished, so BSP can safely make use of its value.\r | |
954 | //\r | |
955 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
956 | CpuState = CpuData->State;\r | |
957 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
958 | \r | |
959 | //\r | |
960 | // If the APs finishes for StartupThisAP(), return EFI_SUCCESS.\r | |
961 | //\r | |
962 | if (CpuState == CpuStateFinished) {\r | |
963 | \r | |
964 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
965 | CpuData->State = CpuStateIdle;\r | |
966 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
de243ee4 | 967 | \r |
768e2a90 | 968 | if (CpuData->Finished != NULL) {\r |
969 | *(CpuData->Finished) = TRUE;\r | |
970 | }\r | |
971 | return EFI_SUCCESS;\r | |
972 | } else {\r | |
973 | //\r | |
974 | // If timeout expires for StartupThisAP(), report timeout.\r | |
975 | //\r | |
976 | if (CheckTimeout (&CpuData->CurrentTime, &CpuData->TotalTime, CpuData->ExpectedTime)) {\r | |
977 | \r | |
978 | if (CpuData->Finished != NULL) {\r | |
979 | *(CpuData->Finished) = FALSE;\r | |
980 | }\r | |
981 | //\r | |
982 | // Reset failed AP to idle state\r | |
983 | //\r | |
984 | ResetProcessorToIdleState (ProcessorNumber);\r | |
985 | \r | |
986 | return EFI_TIMEOUT;\r | |
987 | }\r | |
988 | }\r | |
989 | return EFI_NOT_READY;\r | |
990 | }\r | |
991 | \r | |
992 | /**\r | |
993 | Calculate timeout value and return the current performance counter value.\r | |
994 | \r | |
995 | Calculate the number of performance counter ticks required for a timeout.\r | |
996 | If TimeoutInMicroseconds is 0, return value is also 0, which is recognized\r | |
997 | as infinity.\r | |
998 | \r | |
999 | @param TimeoutInMicroseconds Timeout value in microseconds.\r | |
1000 | @param CurrentTime Returns the current value of the performance counter.\r | |
1001 | \r | |
1002 | @return Expected timestamp counter for timeout.\r | |
1003 | If TimeoutInMicroseconds is 0, return value is also 0, which is recognized\r | |
1004 | as infinity.\r | |
1005 | \r | |
1006 | **/\r | |
1007 | UINT64\r | |
1008 | CalculateTimeout (\r | |
1009 | IN UINTN TimeoutInMicroseconds,\r | |
1010 | OUT UINT64 *CurrentTime\r | |
1011 | )\r | |
1012 | {\r | |
1013 | //\r | |
1014 | // Read the current value of the performance counter\r | |
1015 | //\r | |
1016 | *CurrentTime = GetPerformanceCounter ();\r | |
1017 | \r | |
1018 | //\r | |
1019 | // If TimeoutInMicroseconds is 0, return value is also 0, which is recognized\r | |
1020 | // as infinity.\r | |
1021 | //\r | |
1022 | if (TimeoutInMicroseconds == 0) {\r | |
1023 | return 0;\r | |
1024 | }\r | |
1025 | \r | |
1026 | //\r | |
1027 | // GetPerformanceCounterProperties () returns the timestamp counter's frequency\r | |
1028 | // in Hz. So multiply the return value with TimeoutInMicroseconds and then divide\r | |
1029 | // it by 1,000,000, to get the number of ticks for the timeout value.\r | |
1030 | //\r | |
1031 | return DivU64x32 (\r | |
1032 | MultU64x64 (\r | |
1033 | GetPerformanceCounterProperties (NULL, NULL),\r | |
1034 | TimeoutInMicroseconds\r | |
1035 | ),\r | |
1036 | 1000000\r | |
1037 | );\r | |
1038 | }\r | |
1039 | \r | |
1040 | /**\r | |
1041 | Checks whether timeout expires.\r | |
1042 | \r | |
1043 | Check whether the number of ellapsed performance counter ticks required for a timeout condition\r | |
1044 | has been reached. If Timeout is zero, which means infinity, return value is always FALSE.\r | |
1045 | \r | |
1046 | @param PreviousTime On input, the value of the performance counter when it was last read.\r | |
1047 | On output, the current value of the performance counter\r | |
1048 | @param TotalTime The total amount of ellapsed time in performance counter ticks.\r | |
1049 | @param Timeout The number of performance counter ticks required to reach a timeout condition.\r | |
1050 | \r | |
1051 | @retval TRUE A timeout condition has been reached.\r | |
1052 | @retval FALSE A timeout condition has not been reached.\r | |
1053 | \r | |
1054 | **/\r | |
1055 | BOOLEAN\r | |
1056 | CheckTimeout (\r | |
1057 | IN OUT UINT64 *PreviousTime,\r | |
1058 | IN UINT64 *TotalTime,\r | |
1059 | IN UINT64 Timeout\r | |
1060 | )\r | |
1061 | {\r | |
1062 | UINT64 Start;\r | |
1063 | UINT64 End;\r | |
1064 | UINT64 CurrentTime;\r | |
1065 | INT64 Delta;\r | |
1066 | INT64 Cycle;\r | |
1067 | \r | |
1068 | if (Timeout == 0) {\r | |
1069 | return FALSE;\r | |
1070 | }\r | |
1071 | GetPerformanceCounterProperties (&Start, &End);\r | |
1072 | Cycle = End - Start;\r | |
1073 | if (Cycle < 0) {\r | |
1074 | Cycle = -Cycle;\r | |
1075 | }\r | |
1076 | Cycle++;\r | |
1077 | CurrentTime = GetPerformanceCounter();\r | |
1078 | Delta = (INT64) (CurrentTime - *PreviousTime);\r | |
1079 | if (Start > End) {\r | |
1080 | Delta = -Delta;\r | |
1081 | }\r | |
1082 | if (Delta < 0) {\r | |
1083 | Delta += Cycle;\r | |
1084 | }\r | |
1085 | *TotalTime += Delta;\r | |
1086 | *PreviousTime = CurrentTime;\r | |
1087 | if (*TotalTime > Timeout) {\r | |
1088 | return TRUE;\r | |
1089 | }\r | |
1090 | return FALSE;\r | |
1091 | }\r | |
1092 | \r | |
1093 | /**\r | |
1094 | Searches for the next waiting AP.\r | |
1095 | \r | |
1096 | Search for the next AP that is put in waiting state by single-threaded StartupAllAPs().\r | |
1097 | \r | |
1098 | @param NextProcessorNumber Pointer to the processor number of the next waiting AP.\r | |
1099 | \r | |
1100 | @retval EFI_SUCCESS The next waiting AP has been found.\r | |
1101 | @retval EFI_NOT_FOUND No waiting AP exists.\r | |
1102 | \r | |
1103 | **/\r | |
1104 | EFI_STATUS\r | |
1105 | GetNextWaitingProcessorNumber (\r | |
1106 | OUT UINTN *NextProcessorNumber\r | |
1107 | )\r | |
1108 | {\r | |
1109 | UINTN ProcessorNumber;\r | |
1110 | \r | |
1111 | for (ProcessorNumber = 0; ProcessorNumber < mNumberOfProcessors; ProcessorNumber++) {\r | |
1112 | \r | |
1113 | if (mMPSystemData.CpuList[ProcessorNumber]) {\r | |
1114 | *NextProcessorNumber = ProcessorNumber;\r | |
1115 | return EFI_SUCCESS;\r | |
1116 | }\r | |
1117 | }\r | |
1118 | \r | |
1119 | return EFI_NOT_FOUND;\r | |
1120 | }\r | |
1121 | \r | |
de243ee4 | 1122 | \r |
768e2a90 | 1123 | /**\r |
1124 | Wrapper function for all procedures assigned to AP.\r | |
1125 | \r | |
1126 | Wrapper function for all procedures assigned to AP via MP service protocol.\r | |
1127 | It controls states of AP and invokes assigned precedure.\r | |
1128 | \r | |
1129 | **/\r | |
1130 | VOID\r | |
1131 | ApProcWrapper (\r | |
1132 | VOID\r | |
1133 | )\r | |
1134 | {\r | |
1135 | EFI_AP_PROCEDURE Procedure;\r | |
1136 | VOID *Parameter;\r | |
1137 | UINTN ProcessorNumber;\r | |
1138 | CPU_DATA_BLOCK *CpuData;\r | |
1139 | \r | |
1aa8ced1 | 1140 | //\r |
1141 | // Program virtual wire mode for AP, since it will be lost after AP wake up\r | |
1142 | //\r | |
1143 | ProgramVirtualWireMode ();\r | |
1144 | DisableLvtInterrupts ();\r | |
1145 | \r | |
74f89527 | 1146 | //\r |
1147 | // Initialize Debug Agent to support source level debug on AP code.\r | |
1148 | //\r | |
1149 | InitializeDebugAgent (DEBUG_AGENT_INIT_DXE_AP, NULL, NULL);\r | |
1150 | \r | |
768e2a90 | 1151 | WhoAmI (&mMpService, &ProcessorNumber);\r |
1152 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r | |
1153 | \r | |
1154 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
1155 | CpuData->State = CpuStateBusy;\r | |
1156 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
1157 | \r | |
1158 | //\r | |
1159 | // Now let us check it out.\r | |
1160 | //\r | |
1161 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
1162 | Procedure = CpuData->Procedure;\r | |
1163 | Parameter = CpuData->Parameter;\r | |
1164 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
1165 | \r | |
1166 | if (Procedure != NULL) {\r | |
1167 | \r | |
1168 | Procedure (Parameter);\r | |
1169 | \r | |
1170 | //\r | |
1171 | // if BSP is switched to AP, it continue execute from here, but it carries register state\r | |
1172 | // of the old AP, so need to reload CpuData (might be stored in a register after compiler\r | |
1173 | // optimization) to make sure it points to the right data\r | |
1174 | //\r | |
1175 | WhoAmI (&mMpService, &ProcessorNumber);\r | |
1176 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r | |
1177 | \r | |
1178 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
1179 | CpuData->Procedure = NULL;\r | |
1180 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
1181 | }\r | |
1182 | \r | |
1183 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
1184 | CpuData->State = CpuStateFinished;\r | |
1185 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
1186 | }\r | |
1187 | \r | |
768e2a90 | 1188 | /**\r |
1189 | Function to wake up a specified AP and assign procedure to it.\r | |
de243ee4 | 1190 | \r |
768e2a90 | 1191 | @param ProcessorNumber Handle number of the specified processor.\r |
1192 | @param Procedure Procedure to assign.\r | |
1193 | @param ProcArguments Argument for Procedure.\r | |
1194 | \r | |
1195 | **/\r | |
1196 | VOID\r | |
1197 | WakeUpAp (\r | |
1198 | IN UINTN ProcessorNumber,\r | |
1199 | IN EFI_AP_PROCEDURE Procedure,\r | |
1200 | IN VOID *ProcArguments\r | |
1201 | )\r | |
1202 | {\r | |
1203 | EFI_STATUS Status;\r | |
1204 | CPU_DATA_BLOCK *CpuData;\r | |
1205 | EFI_PROCESSOR_INFORMATION ProcessorInfoBuffer;\r | |
1206 | \r | |
2d7b3c03 | 1207 | ASSERT (ProcessorNumber < mNumberOfProcessors);\r |
45590862 | 1208 | ASSERT (ProcessorNumber < MAX_CPU_NUMBER);\r |
2d7b3c03 | 1209 | \r |
768e2a90 | 1210 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r |
1211 | \r | |
1212 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
1213 | CpuData->Parameter = ProcArguments;\r | |
1214 | CpuData->Procedure = Procedure;\r | |
1215 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
1216 | \r | |
1217 | Status = GetProcessorInfo (\r | |
1218 | &mMpService,\r | |
1219 | ProcessorNumber,\r | |
1220 | &ProcessorInfoBuffer\r | |
1221 | );\r | |
1222 | ASSERT_EFI_ERROR (Status);\r | |
1223 | \r | |
0a6374ba | 1224 | mExchangeInfo->ApFunction = (VOID *) (UINTN) ApProcWrapper;\r |
1225 | mExchangeInfo->ProcessorNumber[ProcessorInfoBuffer.ProcessorId] = (UINT32) ProcessorNumber;\r | |
768e2a90 | 1226 | SendInitSipiSipi (\r |
768e2a90 | 1227 | (UINT32) ProcessorInfoBuffer.ProcessorId,\r |
0a6374ba | 1228 | (UINT32) (UINTN) mStartupVector\r |
768e2a90 | 1229 | );\r |
1230 | }\r | |
1231 | \r | |
1232 | /**\r | |
1233 | Terminate AP's task and set it to idle state.\r | |
de243ee4 | 1234 | \r |
768e2a90 | 1235 | This function terminates AP's task due to timeout by sending INIT-SIPI,\r |
1236 | and sends it to idle state.\r | |
1237 | \r | |
1238 | @param ProcessorNumber Handle number of the specified processor.\r | |
1239 | \r | |
1240 | **/\r | |
1241 | VOID\r | |
1242 | ResetProcessorToIdleState (\r | |
1243 | UINTN ProcessorNumber\r | |
1244 | )\r | |
1245 | {\r | |
1246 | EFI_STATUS Status;\r | |
1247 | CPU_DATA_BLOCK *CpuData;\r | |
1248 | EFI_PROCESSOR_INFORMATION ProcessorInfoBuffer;\r | |
1249 | \r | |
1250 | Status = GetProcessorInfo (\r | |
1251 | &mMpService,\r | |
1252 | ProcessorNumber,\r | |
1253 | &ProcessorInfoBuffer\r | |
1254 | );\r | |
1255 | ASSERT_EFI_ERROR (Status);\r | |
1256 | \r | |
0a6374ba | 1257 | mExchangeInfo->ApFunction = NULL;\r |
1258 | mExchangeInfo->ProcessorNumber[ProcessorInfoBuffer.ProcessorId] = (UINT32) ProcessorNumber;\r | |
768e2a90 | 1259 | SendInitSipiSipi (\r |
768e2a90 | 1260 | (UINT32) ProcessorInfoBuffer.ProcessorId,\r |
0a6374ba | 1261 | (UINT32) (UINTN) mStartupVector\r |
768e2a90 | 1262 | );\r |
1263 | \r | |
1264 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r | |
1265 | \r | |
1266 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
1267 | CpuData->State = CpuStateIdle;\r | |
1268 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
1269 | }\r | |
1270 | \r | |
1271 | /**\r | |
1272 | Worker function of EnableDisableAP ()\r | |
1273 | \r | |
1274 | Worker function of EnableDisableAP (). Changes state of specified processor.\r | |
1275 | \r | |
1276 | @param ProcessorNumber Processor number of specified AP.\r | |
1277 | @param NewState Desired state of the specified AP.\r | |
1278 | \r | |
1279 | @retval EFI_SUCCESS AP's state successfully changed.\r | |
1280 | \r | |
1281 | **/\r | |
1282 | EFI_STATUS\r | |
1283 | ChangeCpuState (\r | |
1284 | IN UINTN ProcessorNumber,\r | |
1285 | IN BOOLEAN NewState\r | |
1286 | )\r | |
1287 | {\r | |
1288 | CPU_DATA_BLOCK *CpuData;\r | |
1289 | \r | |
2d7b3c03 | 1290 | ASSERT (ProcessorNumber < mNumberOfProcessors);\r |
45590862 | 1291 | ASSERT (ProcessorNumber < MAX_CPU_NUMBER);\r |
2d7b3c03 | 1292 | \r |
768e2a90 | 1293 | CpuData = &mMPSystemData.CpuData[ProcessorNumber];\r |
1294 | \r | |
1295 | if (!NewState) {\r | |
1296 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
1297 | CpuData->State = CpuStateDisabled;\r | |
1298 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
1299 | } else {\r | |
1300 | AcquireSpinLock (&CpuData->CpuDataLock);\r | |
1301 | CpuData->State = CpuStateIdle;\r | |
1302 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
1303 | }\r | |
1304 | \r | |
1305 | return EFI_SUCCESS;\r | |
1306 | }\r | |
1307 | \r | |
1308 | /**\r | |
1309 | Test memory region of EfiGcdMemoryTypeReserved.\r | |
1310 | \r | |
1311 | @param Length The length of memory region to test.\r | |
1312 | \r | |
1313 | @retval EFI_SUCCESS The memory region passes test.\r | |
1314 | @retval EFI_NOT_FOUND The memory region is not reserved memory.\r | |
1315 | @retval EFI_DEVICE_ERROR The memory fails on test.\r | |
1316 | \r | |
1317 | **/\r | |
1318 | EFI_STATUS\r | |
1319 | TestReservedMemory (\r | |
1320 | UINTN Length\r | |
1321 | )\r | |
1322 | {\r | |
1323 | EFI_STATUS Status;\r | |
1324 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor;\r | |
1325 | EFI_PHYSICAL_ADDRESS Address;\r | |
1326 | UINTN LengthCovered;\r | |
1327 | UINTN RemainingLength;\r | |
1328 | \r | |
1329 | //\r | |
1330 | // Walk through the memory descriptors covering the memory range.\r | |
1331 | //\r | |
1332 | Address = mStartupVector;\r | |
1333 | RemainingLength = Length;\r | |
1334 | while (Address < mStartupVector + Length) {\r | |
1335 | Status = gDS->GetMemorySpaceDescriptor(\r | |
1336 | Address,\r | |
1337 | &Descriptor\r | |
1338 | );\r | |
1339 | if (EFI_ERROR (Status)) {\r | |
1340 | return EFI_NOT_FOUND;\r | |
1341 | }\r | |
1342 | \r | |
1343 | if (Descriptor.GcdMemoryType != EfiGcdMemoryTypeReserved) {\r | |
1344 | return EFI_NOT_FOUND;\r | |
1345 | }\r | |
1346 | //\r | |
1347 | // Calculated the length of the intersected range.\r | |
1348 | //\r | |
1349 | LengthCovered = (UINTN) (Descriptor.BaseAddress + Descriptor.Length - Address);\r | |
1350 | if (LengthCovered > RemainingLength) {\r | |
1351 | LengthCovered = RemainingLength;\r | |
1352 | }\r | |
1353 | \r | |
1354 | Status = mGenMemoryTest->CompatibleRangeTest (\r | |
1355 | mGenMemoryTest,\r | |
1356 | Address,\r | |
1357 | LengthCovered\r | |
1358 | );\r | |
1359 | if (EFI_ERROR (Status)) {\r | |
1360 | return EFI_DEVICE_ERROR;\r | |
1361 | }\r | |
1362 | \r | |
1363 | Address += LengthCovered;\r | |
1364 | RemainingLength -= LengthCovered;\r | |
1365 | }\r | |
1366 | \r | |
1367 | return EFI_SUCCESS;\r | |
1368 | }\r | |
1369 | \r | |
1370 | /**\r | |
1371 | Allocates startup vector for APs.\r | |
1372 | \r | |
1373 | This function allocates Startup vector for APs.\r | |
1374 | \r | |
1375 | @param Size The size of startup vector.\r | |
1376 | \r | |
1377 | **/\r | |
1378 | VOID\r | |
1379 | AllocateStartupVector (\r | |
1380 | UINTN Size\r | |
1381 | )\r | |
1382 | {\r | |
1383 | EFI_STATUS Status;\r | |
1384 | \r | |
1385 | Status = gBS->LocateProtocol (\r | |
1386 | &gEfiGenericMemTestProtocolGuid,\r | |
1387 | NULL,\r | |
1388 | (VOID **) &mGenMemoryTest\r | |
1389 | );\r | |
1390 | if (EFI_ERROR (Status)) {\r | |
1391 | mGenMemoryTest = NULL;\r | |
1392 | }\r | |
1393 | \r | |
1394 | for (mStartupVector = 0x7F000; mStartupVector >= 0x2000; mStartupVector -= EFI_PAGE_SIZE) {\r | |
1395 | if (mGenMemoryTest != NULL) {\r | |
1396 | //\r | |
1397 | // Test memory if it is EfiGcdMemoryTypeReserved.\r | |
1398 | //\r | |
1399 | Status = TestReservedMemory (EFI_SIZE_TO_PAGES (Size) * EFI_PAGE_SIZE);\r | |
1400 | if (Status == EFI_DEVICE_ERROR) {\r | |
1401 | continue;\r | |
1402 | }\r | |
1403 | }\r | |
1404 | \r | |
1405 | Status = gBS->AllocatePages (\r | |
1406 | AllocateAddress,\r | |
1407 | EfiBootServicesCode,\r | |
1408 | EFI_SIZE_TO_PAGES (Size),\r | |
1409 | &mStartupVector\r | |
1410 | );\r | |
1411 | \r | |
1412 | if (!EFI_ERROR (Status)) {\r | |
1413 | break;\r | |
1414 | }\r | |
1415 | }\r | |
1416 | \r | |
1417 | ASSERT_EFI_ERROR (Status);\r | |
1418 | }\r | |
1419 | \r | |
1420 | /**\r | |
1421 | Prepares Startup Vector for APs.\r | |
1422 | \r | |
1423 | This function prepares Startup Vector for APs.\r | |
1424 | \r | |
1425 | **/\r | |
1426 | VOID\r | |
1427 | PrepareAPStartupVector (\r | |
1428 | VOID\r | |
1429 | )\r | |
1430 | {\r | |
1431 | MP_ASSEMBLY_ADDRESS_MAP AddressMap;\r | |
1432 | IA32_DESCRIPTOR GdtrForBSP;\r | |
de243ee4 | 1433 | IA32_DESCRIPTOR IdtrForBSP;\r |
50684330 | 1434 | EFI_PHYSICAL_ADDRESS GdtForAP;\r |
de243ee4 | 1435 | EFI_PHYSICAL_ADDRESS IdtForAP;\r |
50684330 | 1436 | EFI_STATUS Status;\r |
768e2a90 | 1437 | \r |
1438 | //\r | |
1439 | // Get the address map of startup code for AP,\r | |
1440 | // including code size, and offset of long jump instructions to redirect.\r | |
1441 | //\r | |
1442 | AsmGetAddressMap (&AddressMap);\r | |
1443 | \r | |
1444 | //\r | |
1445 | // Allocate a 4K-aligned region under 1M for startup vector for AP.\r | |
1446 | // The region contains AP startup code and exchange data between BSP and AP.\r | |
1447 | //\r | |
1448 | AllocateStartupVector (AddressMap.Size + sizeof (MP_CPU_EXCHANGE_INFO));\r | |
1449 | \r | |
1450 | //\r | |
1451 | // Copy AP startup code to startup vector, and then redirect the long jump\r | |
1452 | // instructions for mode switching.\r | |
1453 | //\r | |
1454 | CopyMem ((VOID *) (UINTN) mStartupVector, AddressMap.RendezvousFunnelAddress, AddressMap.Size);\r | |
1455 | *(UINT32 *) (UINTN) (mStartupVector + AddressMap.FlatJumpOffset + 3) = (UINT32) (mStartupVector + AddressMap.PModeEntryOffset);\r | |
1456 | //\r | |
1457 | // For IA32 mode, LongJumpOffset is filled with zero. If non-zero, then we are in X64 mode, so further redirect for long mode switch.\r | |
1458 | //\r | |
1459 | if (AddressMap.LongJumpOffset != 0) {\r | |
1460 | *(UINT32 *) (UINTN) (mStartupVector + AddressMap.LongJumpOffset + 2) = (UINT32) (mStartupVector + AddressMap.LModeEntryOffset);\r | |
1461 | }\r | |
1462 | \r | |
1463 | //\r | |
1464 | // Get the start address of exchange data between BSP and AP.\r | |
1465 | //\r | |
1466 | mExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN) (mStartupVector + AddressMap.Size);\r | |
1467 | \r | |
1468 | ZeroMem ((VOID *) mExchangeInfo, sizeof (MP_CPU_EXCHANGE_INFO));\r | |
1469 | \r | |
d6d858c4 | 1470 | mExchangeInfo->StackStart = AllocatePages (EFI_SIZE_TO_PAGES (mNumberOfProcessors * AP_STACK_SIZE));\r |
768e2a90 | 1471 | mExchangeInfo->StackSize = AP_STACK_SIZE;\r |
1472 | \r | |
1473 | AsmReadGdtr (&GdtrForBSP);\r | |
de243ee4 | 1474 | AsmReadIdtr (&IdtrForBSP);\r |
50684330 | 1475 | \r |
1476 | //\r | |
1477 | // Allocate memory under 4G to hold GDT for APs\r | |
1478 | //\r | |
1479 | GdtForAP = 0xffffffff;\r | |
1480 | Status = gBS->AllocatePages (\r | |
1481 | AllocateMaxAddress,\r | |
1482 | EfiBootServicesData,\r | |
de243ee4 | 1483 | EFI_SIZE_TO_PAGES ((GdtrForBSP.Limit + 1) + (IdtrForBSP.Limit + 1)),\r |
50684330 | 1484 | &GdtForAP\r |
1485 | );\r | |
1486 | ASSERT_EFI_ERROR (Status);\r | |
1487 | \r | |
de243ee4 | 1488 | IdtForAP = (UINTN) GdtForAP + GdtrForBSP.Limit + 1;\r |
1489 | \r | |
50684330 | 1490 | CopyMem ((VOID *) (UINTN) GdtForAP, (VOID *) GdtrForBSP.Base, GdtrForBSP.Limit + 1);\r |
de243ee4 | 1491 | CopyMem ((VOID *) (UINTN) IdtForAP, (VOID *) IdtrForBSP.Base, IdtrForBSP.Limit + 1);\r |
50684330 | 1492 | \r |
1493 | mExchangeInfo->GdtrProfile.Base = (UINTN) GdtForAP;\r | |
768e2a90 | 1494 | mExchangeInfo->GdtrProfile.Limit = GdtrForBSP.Limit;\r |
de243ee4 | 1495 | mExchangeInfo->IdtrProfile.Base = (UINTN) IdtForAP;\r |
1496 | mExchangeInfo->IdtrProfile.Limit = IdtrForBSP.Limit;\r | |
768e2a90 | 1497 | \r |
1498 | mExchangeInfo->BufferStart = (UINT32) mStartupVector;\r | |
1499 | mExchangeInfo->Cr3 = (UINT32) (AsmReadCr3 ());\r | |
1500 | }\r | |
1501 | \r | |
1502 | /**\r | |
1503 | Prepares memory region for processor configuration.\r | |
de243ee4 | 1504 | \r |
768e2a90 | 1505 | This function prepares memory region for processor configuration.\r |
1506 | \r | |
1507 | **/\r | |
1508 | VOID\r | |
1509 | PrepareMemoryForConfiguration (\r | |
1510 | VOID\r | |
1511 | )\r | |
1512 | {\r | |
1513 | UINTN Index;\r | |
1514 | \r | |
1515 | //\r | |
1516 | // Initialize Spin Locks for system\r | |
1517 | //\r | |
1518 | InitializeSpinLock (&mMPSystemData.APSerializeLock);\r | |
1519 | for (Index = 0; Index < MAX_CPU_NUMBER; Index++) {\r | |
1520 | InitializeSpinLock (&mMPSystemData.CpuData[Index].CpuDataLock);\r | |
1521 | }\r | |
de243ee4 | 1522 | \r |
768e2a90 | 1523 | PrepareAPStartupVector ();\r |
1524 | }\r | |
1525 | \r | |
1526 | /**\r | |
1527 | Gets the processor number of BSP.\r | |
de243ee4 | 1528 | \r |
768e2a90 | 1529 | @return The processor number of BSP.\r |
1530 | \r | |
1531 | **/\r | |
1532 | UINTN\r | |
1533 | GetBspNumber (\r | |
1534 | VOID\r | |
1535 | )\r | |
1536 | {\r | |
1537 | UINTN ProcessorNumber;\r | |
1538 | EFI_MP_PROC_CONTEXT ProcessorContextBuffer;\r | |
1539 | EFI_STATUS Status;\r | |
1540 | UINTN BufferSize;\r | |
1541 | \r | |
1542 | BufferSize = sizeof (EFI_MP_PROC_CONTEXT);\r | |
1543 | \r | |
1544 | for (ProcessorNumber = 0; ProcessorNumber < mNumberOfProcessors; ProcessorNumber++) {\r | |
1545 | Status = mFrameworkMpService->GetProcessorContext (\r | |
1546 | mFrameworkMpService,\r | |
1547 | ProcessorNumber,\r | |
1548 | &BufferSize,\r | |
1549 | &ProcessorContextBuffer\r | |
1550 | );\r | |
1551 | ASSERT_EFI_ERROR (Status);\r | |
de243ee4 | 1552 | \r |
768e2a90 | 1553 | if (ProcessorContextBuffer.Designation == EfiCpuBSP) {\r |
1554 | break;\r | |
1555 | }\r | |
1556 | }\r | |
1557 | ASSERT (ProcessorNumber < mNumberOfProcessors);\r | |
1558 | \r | |
1559 | return ProcessorNumber;\r | |
1560 | }\r | |
1561 | \r | |
1562 | /**\r | |
1563 | Entrypoint of MP Services Protocol thunk driver.\r | |
1564 | \r | |
de243ee4 | 1565 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r |
768e2a90 | 1566 | @param[in] SystemTable A pointer to the EFI System Table.\r |
de243ee4 | 1567 | \r |
768e2a90 | 1568 | @retval EFI_SUCCESS The entry point is executed successfully.\r |
1569 | \r | |
1570 | **/\r | |
1571 | EFI_STATUS\r | |
1572 | EFIAPI\r | |
1573 | InitializeMpServicesProtocol (\r | |
1574 | IN EFI_HANDLE ImageHandle,\r | |
1575 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1576 | )\r | |
1577 | {\r | |
1578 | EFI_STATUS Status;\r | |
1579 | \r | |
768e2a90 | 1580 | //\r |
1581 | // Locates Framework version MP Services Protocol\r | |
1582 | //\r | |
1583 | Status = gBS->LocateProtocol (\r | |
de243ee4 | 1584 | &gFrameworkEfiMpServiceProtocolGuid,\r |
1585 | NULL,\r | |
768e2a90 | 1586 | (VOID **) &mFrameworkMpService\r |
1587 | );\r | |
1588 | ASSERT_EFI_ERROR (Status);\r | |
1589 | \r | |
1590 | Status = mFrameworkMpService->GetGeneralMPInfo (\r | |
1591 | mFrameworkMpService,\r | |
1592 | &mNumberOfProcessors,\r | |
1593 | NULL,\r | |
1594 | NULL,\r | |
1595 | NULL,\r | |
1596 | NULL\r | |
1597 | );\r | |
1598 | ASSERT_EFI_ERROR (Status);\r | |
2d7b3c03 | 1599 | ASSERT (mNumberOfProcessors < MAX_CPU_NUMBER);\r |
768e2a90 | 1600 | \r |
d6d858c4 | 1601 | PrepareMemoryForConfiguration ();\r |
1602 | \r | |
768e2a90 | 1603 | //\r |
1604 | // Create timer event to check AP state for non-blocking execution.\r | |
1605 | //\r | |
1606 | Status = gBS->CreateEvent (\r | |
1607 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
1608 | TPL_CALLBACK,\r | |
1609 | CheckAPsStatus,\r | |
1610 | NULL,\r | |
1611 | &mMPSystemData.CheckAPsEvent\r | |
1612 | );\r | |
1613 | ASSERT_EFI_ERROR (Status);\r | |
1614 | \r | |
1615 | //\r | |
1616 | // Now install the MP services protocol.\r | |
1617 | //\r | |
1618 | Status = gBS->InstallProtocolInterface (\r | |
1619 | &mHandle,\r | |
1620 | &gEfiMpServiceProtocolGuid,\r | |
1621 | EFI_NATIVE_INTERFACE,\r | |
1622 | &mMpService\r | |
1623 | );\r | |
1624 | ASSERT_EFI_ERROR (Status);\r | |
1625 | \r | |
1626 | //\r | |
1627 | // Launch the timer event to check AP state.\r | |
1628 | //\r | |
1629 | Status = gBS->SetTimer (\r | |
1630 | mMPSystemData.CheckAPsEvent,\r | |
1631 | TimerPeriodic,\r | |
1632 | 100000\r | |
1633 | );\r | |
1634 | ASSERT_EFI_ERROR (Status);\r | |
1635 | \r | |
1636 | return EFI_SUCCESS;\r | |
1637 | }\r |