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529a5a86 MK |
1 | /** @file\r |
2 | SMM MP service implementation\r | |
3 | \r | |
70911f1f | 4 | Copyright (c) 2009 - 2020, Intel Corporation. All rights reserved.<BR>\r |
241f9149 LD |
5 | Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>\r |
6 | \r | |
0acd8697 | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
529a5a86 MK |
8 | \r |
9 | **/\r | |
10 | \r | |
11 | #include "PiSmmCpuDxeSmm.h"\r | |
12 | \r | |
13 | //\r | |
14 | // Slots for all MTRR( FIXED MTRR + VARIABLE MTRR + MTRR_LIB_IA32_MTRR_DEF_TYPE)\r | |
15 | //\r | |
26ab5ac3 | 16 | MTRR_SETTINGS gSmiMtrrs;\r |
529a5a86 MK |
17 | UINT64 gPhyMask;\r |
18 | SMM_DISPATCHER_MP_SYNC_DATA *mSmmMpSyncData = NULL;\r | |
19 | UINTN mSmmMpSyncDataSize;\r | |
1d648531 JF |
20 | SMM_CPU_SEMAPHORES mSmmCpuSemaphores;\r |
21 | UINTN mSemaphoreSize;\r | |
fe3a75bc | 22 | SPIN_LOCK *mPFLock = NULL;\r |
b43dd229 | 23 | SMM_CPU_SYNC_MODE mCpuSmmSyncMode;\r |
ba40cb31 | 24 | BOOLEAN mMachineCheckSupported = FALSE;\r |
529a5a86 MK |
25 | \r |
26 | /**\r | |
27 | Performs an atomic compare exchange operation to get semaphore.\r | |
28 | The compare exchange operation must be performed using\r | |
29 | MP safe mechanisms.\r | |
30 | \r | |
31 | @param Sem IN: 32-bit unsigned integer\r | |
32 | OUT: original integer - 1\r | |
33 | @return Original integer - 1\r | |
34 | \r | |
35 | **/\r | |
36 | UINT32\r | |
37 | WaitForSemaphore (\r | |
38 | IN OUT volatile UINT32 *Sem\r | |
39 | )\r | |
40 | {\r | |
41 | UINT32 Value;\r | |
42 | \r | |
43 | do {\r | |
44 | Value = *Sem;\r | |
45 | } while (Value == 0 ||\r | |
46 | InterlockedCompareExchange32 (\r | |
47 | (UINT32*)Sem,\r | |
48 | Value,\r | |
49 | Value - 1\r | |
50 | ) != Value);\r | |
51 | return Value - 1;\r | |
52 | }\r | |
53 | \r | |
54 | \r | |
55 | /**\r | |
56 | Performs an atomic compare exchange operation to release semaphore.\r | |
57 | The compare exchange operation must be performed using\r | |
58 | MP safe mechanisms.\r | |
59 | \r | |
60 | @param Sem IN: 32-bit unsigned integer\r | |
61 | OUT: original integer + 1\r | |
62 | @return Original integer + 1\r | |
63 | \r | |
64 | **/\r | |
65 | UINT32\r | |
66 | ReleaseSemaphore (\r | |
67 | IN OUT volatile UINT32 *Sem\r | |
68 | )\r | |
69 | {\r | |
70 | UINT32 Value;\r | |
71 | \r | |
72 | do {\r | |
73 | Value = *Sem;\r | |
74 | } while (Value + 1 != 0 &&\r | |
75 | InterlockedCompareExchange32 (\r | |
76 | (UINT32*)Sem,\r | |
77 | Value,\r | |
78 | Value + 1\r | |
79 | ) != Value);\r | |
80 | return Value + 1;\r | |
81 | }\r | |
82 | \r | |
83 | /**\r | |
84 | Performs an atomic compare exchange operation to lock semaphore.\r | |
85 | The compare exchange operation must be performed using\r | |
86 | MP safe mechanisms.\r | |
87 | \r | |
88 | @param Sem IN: 32-bit unsigned integer\r | |
89 | OUT: -1\r | |
90 | @return Original integer\r | |
91 | \r | |
92 | **/\r | |
93 | UINT32\r | |
94 | LockdownSemaphore (\r | |
95 | IN OUT volatile UINT32 *Sem\r | |
96 | )\r | |
97 | {\r | |
98 | UINT32 Value;\r | |
99 | \r | |
100 | do {\r | |
101 | Value = *Sem;\r | |
102 | } while (InterlockedCompareExchange32 (\r | |
103 | (UINT32*)Sem,\r | |
104 | Value, (UINT32)-1\r | |
105 | ) != Value);\r | |
106 | return Value;\r | |
107 | }\r | |
108 | \r | |
109 | /**\r | |
110 | Wait all APs to performs an atomic compare exchange operation to release semaphore.\r | |
111 | \r | |
112 | @param NumberOfAPs AP number\r | |
113 | \r | |
114 | **/\r | |
115 | VOID\r | |
116 | WaitForAllAPs (\r | |
117 | IN UINTN NumberOfAPs\r | |
118 | )\r | |
119 | {\r | |
120 | UINTN BspIndex;\r | |
121 | \r | |
122 | BspIndex = mSmmMpSyncData->BspIndex;\r | |
123 | while (NumberOfAPs-- > 0) {\r | |
ed3d5ecb | 124 | WaitForSemaphore (mSmmMpSyncData->CpuData[BspIndex].Run);\r |
529a5a86 MK |
125 | }\r |
126 | }\r | |
127 | \r | |
128 | /**\r | |
129 | Performs an atomic compare exchange operation to release semaphore\r | |
130 | for each AP.\r | |
131 | \r | |
132 | **/\r | |
133 | VOID\r | |
134 | ReleaseAllAPs (\r | |
135 | VOID\r | |
136 | )\r | |
137 | {\r | |
138 | UINTN Index;\r | |
529a5a86 | 139 | \r |
70911f1f | 140 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r |
51dd408a | 141 | if (IsPresentAp (Index)) {\r |
ed3d5ecb | 142 | ReleaseSemaphore (mSmmMpSyncData->CpuData[Index].Run);\r |
529a5a86 MK |
143 | }\r |
144 | }\r | |
145 | }\r | |
146 | \r | |
147 | /**\r | |
148 | Checks if all CPUs (with certain exceptions) have checked in for this SMI run\r | |
149 | \r | |
150 | @param Exceptions CPU Arrival exception flags.\r | |
151 | \r | |
152 | @retval TRUE if all CPUs the have checked in.\r | |
153 | @retval FALSE if at least one Normal AP hasn't checked in.\r | |
154 | \r | |
155 | **/\r | |
156 | BOOLEAN\r | |
157 | AllCpusInSmmWithExceptions (\r | |
158 | SMM_CPU_ARRIVAL_EXCEPTIONS Exceptions\r | |
159 | )\r | |
160 | {\r | |
161 | UINTN Index;\r | |
162 | SMM_CPU_DATA_BLOCK *CpuData;\r | |
163 | EFI_PROCESSOR_INFORMATION *ProcessorInfo;\r | |
164 | \r | |
fe3a75bc | 165 | ASSERT (*mSmmMpSyncData->Counter <= mNumberOfCpus);\r |
529a5a86 | 166 | \r |
fe3a75bc | 167 | if (*mSmmMpSyncData->Counter == mNumberOfCpus) {\r |
529a5a86 MK |
168 | return TRUE;\r |
169 | }\r | |
170 | \r | |
171 | CpuData = mSmmMpSyncData->CpuData;\r | |
172 | ProcessorInfo = gSmmCpuPrivate->ProcessorInfo;\r | |
70911f1f | 173 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r |
ed3d5ecb | 174 | if (!(*(CpuData[Index].Present)) && ProcessorInfo[Index].ProcessorId != INVALID_APIC_ID) {\r |
529a5a86 MK |
175 | if (((Exceptions & ARRIVAL_EXCEPTION_DELAYED) != 0) && SmmCpuFeaturesGetSmmRegister (Index, SmmRegSmmDelayed) != 0) {\r |
176 | continue;\r | |
177 | }\r | |
178 | if (((Exceptions & ARRIVAL_EXCEPTION_BLOCKED) != 0) && SmmCpuFeaturesGetSmmRegister (Index, SmmRegSmmBlocked) != 0) {\r | |
179 | continue;\r | |
180 | }\r | |
181 | if (((Exceptions & ARRIVAL_EXCEPTION_SMI_DISABLED) != 0) && SmmCpuFeaturesGetSmmRegister (Index, SmmRegSmmEnable) != 0) {\r | |
182 | continue;\r | |
183 | }\r | |
184 | return FALSE;\r | |
185 | }\r | |
186 | }\r | |
187 | \r | |
188 | \r | |
189 | return TRUE;\r | |
190 | }\r | |
191 | \r | |
12c66382 ED |
192 | /**\r |
193 | Has OS enabled Lmce in the MSR_IA32_MCG_EXT_CTL\r | |
7367cc6c | 194 | \r |
12c66382 ED |
195 | @retval TRUE Os enable lmce.\r |
196 | @retval FALSE Os not enable lmce.\r | |
197 | \r | |
198 | **/\r | |
199 | BOOLEAN\r | |
200 | IsLmceOsEnabled (\r | |
201 | VOID\r | |
202 | )\r | |
203 | {\r | |
204 | MSR_IA32_MCG_CAP_REGISTER McgCap;\r | |
205 | MSR_IA32_FEATURE_CONTROL_REGISTER FeatureCtrl;\r | |
206 | MSR_IA32_MCG_EXT_CTL_REGISTER McgExtCtrl;\r | |
207 | \r | |
208 | McgCap.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_CAP);\r | |
209 | if (McgCap.Bits.MCG_LMCE_P == 0) {\r | |
210 | return FALSE;\r | |
211 | }\r | |
212 | \r | |
213 | FeatureCtrl.Uint64 = AsmReadMsr64 (MSR_IA32_FEATURE_CONTROL);\r | |
214 | if (FeatureCtrl.Bits.LmceOn == 0) {\r | |
215 | return FALSE;\r | |
216 | }\r | |
217 | \r | |
218 | McgExtCtrl.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_EXT_CTL);\r | |
219 | return (BOOLEAN) (McgExtCtrl.Bits.LMCE_EN == 1);\r | |
220 | }\r | |
221 | \r | |
222 | /**\r | |
7367cc6c | 223 | Return if Local machine check exception signaled.\r |
12c66382 | 224 | \r |
7367cc6c | 225 | Indicates (when set) that a local machine check exception was generated. This indicates that the current machine-check event was\r |
12c66382 ED |
226 | delivered to only the logical processor.\r |
227 | \r | |
228 | @retval TRUE LMCE was signaled.\r | |
229 | @retval FALSE LMCE was not signaled.\r | |
230 | \r | |
231 | **/\r | |
232 | BOOLEAN\r | |
233 | IsLmceSignaled (\r | |
234 | VOID\r | |
235 | )\r | |
236 | {\r | |
237 | MSR_IA32_MCG_STATUS_REGISTER McgStatus;\r | |
238 | \r | |
239 | McgStatus.Uint64 = AsmReadMsr64 (MSR_IA32_MCG_STATUS);\r | |
240 | return (BOOLEAN) (McgStatus.Bits.LMCE_S == 1);\r | |
241 | }\r | |
529a5a86 MK |
242 | \r |
243 | /**\r | |
244 | Given timeout constraint, wait for all APs to arrive, and insure when this function returns, no AP will execute normal mode code before\r | |
245 | entering SMM, except SMI disabled APs.\r | |
246 | \r | |
247 | **/\r | |
248 | VOID\r | |
249 | SmmWaitForApArrival (\r | |
250 | VOID\r | |
251 | )\r | |
252 | {\r | |
253 | UINT64 Timer;\r | |
254 | UINTN Index;\r | |
12c66382 ED |
255 | BOOLEAN LmceEn;\r |
256 | BOOLEAN LmceSignal;\r | |
529a5a86 | 257 | \r |
fe3a75bc | 258 | ASSERT (*mSmmMpSyncData->Counter <= mNumberOfCpus);\r |
529a5a86 | 259 | \r |
ba40cb31 MK |
260 | LmceEn = FALSE;\r |
261 | LmceSignal = FALSE;\r | |
262 | if (mMachineCheckSupported) {\r | |
263 | LmceEn = IsLmceOsEnabled ();\r | |
264 | LmceSignal = IsLmceSignaled();\r | |
265 | }\r | |
12c66382 | 266 | \r |
529a5a86 MK |
267 | //\r |
268 | // Platform implementor should choose a timeout value appropriately:\r | |
269 | // - The timeout value should balance the SMM time constrains and the likelihood that delayed CPUs are excluded in the SMM run. Note\r | |
270 | // the SMI Handlers must ALWAYS take into account the cases that not all APs are available in an SMI run.\r | |
271 | // - The timeout value must, in the case of 2nd timeout, be at least long enough to give time for all APs to receive the SMI IPI\r | |
272 | // and either enter SMM or buffer the SMI, to insure there is no CPU running normal mode code when SMI handling starts. This will\r | |
273 | // be TRUE even if a blocked CPU is brought out of the blocked state by a normal mode CPU (before the normal mode CPU received the\r | |
274 | // SMI IPI), because with a buffered SMI, and CPU will enter SMM immediately after it is brought out of the blocked state.\r | |
275 | // - The timeout value must be longer than longest possible IO operation in the system\r | |
276 | //\r | |
277 | \r | |
278 | //\r | |
279 | // Sync with APs 1st timeout\r | |
280 | //\r | |
281 | for (Timer = StartSyncTimer ();\r | |
12c66382 | 282 | !IsSyncTimerTimeout (Timer) && !(LmceEn && LmceSignal) &&\r |
529a5a86 MK |
283 | !AllCpusInSmmWithExceptions (ARRIVAL_EXCEPTION_BLOCKED | ARRIVAL_EXCEPTION_SMI_DISABLED );\r |
284 | ) {\r | |
285 | CpuPause ();\r | |
286 | }\r | |
287 | \r | |
288 | //\r | |
289 | // Not all APs have arrived, so we need 2nd round of timeout. IPIs should be sent to ALL none present APs,\r | |
290 | // because:\r | |
291 | // a) Delayed AP may have just come out of the delayed state. Blocked AP may have just been brought out of blocked state by some AP running\r | |
292 | // normal mode code. These APs need to be guaranteed to have an SMI pending to insure that once they are out of delayed / blocked state, they\r | |
293 | // enter SMI immediately without executing instructions in normal mode. Note traditional flow requires there are no APs doing normal mode\r | |
294 | // work while SMI handling is on-going.\r | |
295 | // b) As a consequence of SMI IPI sending, (spurious) SMI may occur after this SMM run.\r | |
296 | // c) ** NOTE **: Use SMI disabling feature VERY CAREFULLY (if at all) for traditional flow, because a processor in SMI-disabled state\r | |
297 | // will execute normal mode code, which breaks the traditional SMI handlers' assumption that no APs are doing normal\r | |
298 | // mode work while SMI handling is on-going.\r | |
299 | // d) We don't add code to check SMI disabling status to skip sending IPI to SMI disabled APs, because:\r | |
300 | // - In traditional flow, SMI disabling is discouraged.\r | |
301 | // - In relaxed flow, CheckApArrival() will check SMI disabling status before calling this function.\r | |
302 | // In both cases, adding SMI-disabling checking code increases overhead.\r | |
303 | //\r | |
fe3a75bc | 304 | if (*mSmmMpSyncData->Counter < mNumberOfCpus) {\r |
529a5a86 MK |
305 | //\r |
306 | // Send SMI IPIs to bring outside processors in\r | |
307 | //\r | |
70911f1f | 308 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r |
ed3d5ecb | 309 | if (!(*(mSmmMpSyncData->CpuData[Index].Present)) && gSmmCpuPrivate->ProcessorInfo[Index].ProcessorId != INVALID_APIC_ID) {\r |
529a5a86 MK |
310 | SendSmiIpi ((UINT32)gSmmCpuPrivate->ProcessorInfo[Index].ProcessorId);\r |
311 | }\r | |
312 | }\r | |
313 | \r | |
314 | //\r | |
315 | // Sync with APs 2nd timeout.\r | |
316 | //\r | |
317 | for (Timer = StartSyncTimer ();\r | |
318 | !IsSyncTimerTimeout (Timer) &&\r | |
319 | !AllCpusInSmmWithExceptions (ARRIVAL_EXCEPTION_BLOCKED | ARRIVAL_EXCEPTION_SMI_DISABLED );\r | |
320 | ) {\r | |
321 | CpuPause ();\r | |
322 | }\r | |
323 | }\r | |
324 | \r | |
325 | return;\r | |
326 | }\r | |
327 | \r | |
328 | \r | |
329 | /**\r | |
330 | Replace OS MTRR's with SMI MTRR's.\r | |
331 | \r | |
332 | @param CpuIndex Processor Index\r | |
333 | \r | |
334 | **/\r | |
335 | VOID\r | |
336 | ReplaceOSMtrrs (\r | |
337 | IN UINTN CpuIndex\r | |
338 | )\r | |
339 | {\r | |
529a5a86 MK |
340 | SmmCpuFeaturesDisableSmrr ();\r |
341 | \r | |
342 | //\r | |
343 | // Replace all MTRRs registers\r | |
344 | //\r | |
26ab5ac3 | 345 | MtrrSetAllMtrrs (&gSmiMtrrs);\r |
529a5a86 MK |
346 | }\r |
347 | \r | |
51dd408a ED |
348 | /**\r |
349 | Wheck whether task has been finished by all APs.\r | |
350 | \r | |
351 | @param BlockMode Whether did it in block mode or non-block mode.\r | |
352 | \r | |
353 | @retval TRUE Task has been finished by all APs.\r | |
354 | @retval FALSE Task not has been finished by all APs.\r | |
355 | \r | |
356 | **/\r | |
357 | BOOLEAN\r | |
358 | WaitForAllAPsNotBusy (\r | |
359 | IN BOOLEAN BlockMode\r | |
360 | )\r | |
361 | {\r | |
362 | UINTN Index;\r | |
363 | \r | |
70911f1f | 364 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r |
51dd408a ED |
365 | //\r |
366 | // Ignore BSP and APs which not call in SMM.\r | |
367 | //\r | |
368 | if (!IsPresentAp(Index)) {\r | |
369 | continue;\r | |
370 | }\r | |
371 | \r | |
372 | if (BlockMode) {\r | |
373 | AcquireSpinLock(mSmmMpSyncData->CpuData[Index].Busy);\r | |
374 | ReleaseSpinLock(mSmmMpSyncData->CpuData[Index].Busy);\r | |
375 | } else {\r | |
376 | if (AcquireSpinLockOrFail (mSmmMpSyncData->CpuData[Index].Busy)) {\r | |
377 | ReleaseSpinLock(mSmmMpSyncData->CpuData[Index].Busy);\r | |
378 | } else {\r | |
379 | return FALSE;\r | |
380 | }\r | |
381 | }\r | |
382 | }\r | |
383 | \r | |
384 | return TRUE;\r | |
385 | }\r | |
386 | \r | |
387 | /**\r | |
388 | Check whether it is an present AP.\r | |
389 | \r | |
390 | @param CpuIndex The AP index which calls this function.\r | |
391 | \r | |
392 | @retval TRUE It's a present AP.\r | |
393 | @retval TRUE This is not an AP or it is not present.\r | |
394 | \r | |
395 | **/\r | |
396 | BOOLEAN\r | |
397 | IsPresentAp (\r | |
398 | IN UINTN CpuIndex\r | |
399 | )\r | |
400 | {\r | |
401 | return ((CpuIndex != gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu) &&\r | |
402 | *(mSmmMpSyncData->CpuData[CpuIndex].Present));\r | |
403 | }\r | |
404 | \r | |
51dd408a ED |
405 | /**\r |
406 | Clean up the status flags used during executing the procedure.\r | |
407 | \r | |
408 | @param CpuIndex The AP index which calls this function.\r | |
409 | \r | |
410 | **/\r | |
411 | VOID\r | |
412 | ReleaseToken (\r | |
413 | IN UINTN CpuIndex\r | |
414 | )\r | |
415 | {\r | |
a457823f | 416 | PROCEDURE_TOKEN *Token;\r |
51dd408a | 417 | \r |
a457823f ED |
418 | Token = mSmmMpSyncData->CpuData[CpuIndex].Token;\r |
419 | \r | |
420 | if (InterlockedDecrement (&Token->RunningApCount) == 0) {\r | |
421 | ReleaseSpinLock (Token->SpinLock);\r | |
51dd408a | 422 | }\r |
a457823f ED |
423 | \r |
424 | mSmmMpSyncData->CpuData[CpuIndex].Token = NULL;\r | |
51dd408a ED |
425 | }\r |
426 | \r | |
427 | /**\r | |
428 | Free the tokens in the maintained list.\r | |
429 | \r | |
430 | **/\r | |
431 | VOID\r | |
b948a496 | 432 | ResetTokens (\r |
51dd408a ED |
433 | VOID\r |
434 | )\r | |
435 | {\r | |
436 | LIST_ENTRY *Link;\r | |
437 | PROCEDURE_TOKEN *ProcToken;\r | |
9caaa79d | 438 | \r |
b948a496 ED |
439 | Link = GetFirstNode (&gSmmCpuPrivate->TokenList);\r |
440 | while (!IsNull (&gSmmCpuPrivate->TokenList, Link)) {\r | |
51dd408a ED |
441 | ProcToken = PROCEDURE_TOKEN_FROM_LINK (Link);\r |
442 | \r | |
b948a496 ED |
443 | ProcToken->RunningApCount = 0;\r |
444 | ProcToken->Used = FALSE;\r | |
445 | \r | |
446 | //\r | |
447 | // Check the spinlock status and release it if not released yet.\r | |
448 | //\r | |
449 | if (!AcquireSpinLockOrFail(ProcToken->SpinLock)) {\r | |
450 | DEBUG((DEBUG_ERROR, "Risk::SpinLock still not released!"));\r | |
451 | }\r | |
452 | ReleaseSpinLock (ProcToken->SpinLock);\r | |
51dd408a | 453 | \r |
b948a496 | 454 | Link = GetNextNode (&gSmmCpuPrivate->TokenList, Link);\r |
51dd408a | 455 | }\r |
3fdc47c6 RN |
456 | \r |
457 | //\r | |
458 | // Reset the FirstFreeToken to the beginning of token list upon exiting SMI.\r | |
459 | //\r | |
460 | gSmmCpuPrivate->FirstFreeToken = GetFirstNode (&gSmmCpuPrivate->TokenList);\r | |
51dd408a ED |
461 | }\r |
462 | \r | |
529a5a86 MK |
463 | /**\r |
464 | SMI handler for BSP.\r | |
465 | \r | |
466 | @param CpuIndex BSP processor Index\r | |
467 | @param SyncMode SMM MP sync mode\r | |
468 | \r | |
469 | **/\r | |
470 | VOID\r | |
471 | BSPHandler (\r | |
472 | IN UINTN CpuIndex,\r | |
473 | IN SMM_CPU_SYNC_MODE SyncMode\r | |
474 | )\r | |
475 | {\r | |
476 | UINTN Index;\r | |
477 | MTRR_SETTINGS Mtrrs;\r | |
478 | UINTN ApCount;\r | |
479 | BOOLEAN ClearTopLevelSmiResult;\r | |
480 | UINTN PresentCount;\r | |
481 | \r | |
482 | ASSERT (CpuIndex == mSmmMpSyncData->BspIndex);\r | |
483 | ApCount = 0;\r | |
484 | \r | |
485 | //\r | |
486 | // Flag BSP's presence\r | |
487 | //\r | |
fe3a75bc | 488 | *mSmmMpSyncData->InsideSmm = TRUE;\r |
529a5a86 MK |
489 | \r |
490 | //\r | |
491 | // Initialize Debug Agent to start source level debug in BSP handler\r | |
492 | //\r | |
493 | InitializeDebugAgent (DEBUG_AGENT_INIT_ENTER_SMI, NULL, NULL);\r | |
494 | \r | |
495 | //\r | |
496 | // Mark this processor's presence\r | |
497 | //\r | |
ed3d5ecb | 498 | *(mSmmMpSyncData->CpuData[CpuIndex].Present) = TRUE;\r |
529a5a86 MK |
499 | \r |
500 | //\r | |
501 | // Clear platform top level SMI status bit before calling SMI handlers. If\r | |
502 | // we cleared it after SMI handlers are run, we would miss the SMI that\r | |
503 | // occurs after SMI handlers are done and before SMI status bit is cleared.\r | |
504 | //\r | |
505 | ClearTopLevelSmiResult = ClearTopLevelSmiStatus();\r | |
506 | ASSERT (ClearTopLevelSmiResult == TRUE);\r | |
507 | \r | |
508 | //\r | |
509 | // Set running processor index\r | |
510 | //\r | |
511 | gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu = CpuIndex;\r | |
512 | \r | |
513 | //\r | |
514 | // If Traditional Sync Mode or need to configure MTRRs: gather all available APs.\r | |
515 | //\r | |
516 | if (SyncMode == SmmCpuSyncModeTradition || SmmCpuFeaturesNeedConfigureMtrrs()) {\r | |
517 | \r | |
518 | //\r | |
519 | // Wait for APs to arrive\r | |
520 | //\r | |
521 | SmmWaitForApArrival();\r | |
522 | \r | |
523 | //\r | |
524 | // Lock the counter down and retrieve the number of APs\r | |
525 | //\r | |
fe3a75bc JF |
526 | *mSmmMpSyncData->AllCpusInSync = TRUE;\r |
527 | ApCount = LockdownSemaphore (mSmmMpSyncData->Counter) - 1;\r | |
529a5a86 MK |
528 | \r |
529 | //\r | |
530 | // Wait for all APs to get ready for programming MTRRs\r | |
531 | //\r | |
532 | WaitForAllAPs (ApCount);\r | |
533 | \r | |
534 | if (SmmCpuFeaturesNeedConfigureMtrrs()) {\r | |
535 | //\r | |
536 | // Signal all APs it's time for backup MTRRs\r | |
537 | //\r | |
538 | ReleaseAllAPs ();\r | |
539 | \r | |
540 | //\r | |
541 | // WaitForSemaphore() may wait for ever if an AP happens to enter SMM at\r | |
542 | // exactly this point. Please make sure PcdCpuSmmMaxSyncLoops has been set\r | |
543 | // to a large enough value to avoid this situation.\r | |
544 | // Note: For HT capable CPUs, threads within a core share the same set of MTRRs.\r | |
545 | // We do the backup first and then set MTRR to avoid race condition for threads\r | |
546 | // in the same core.\r | |
547 | //\r | |
548 | MtrrGetAllMtrrs(&Mtrrs);\r | |
549 | \r | |
550 | //\r | |
551 | // Wait for all APs to complete their MTRR saving\r | |
552 | //\r | |
553 | WaitForAllAPs (ApCount);\r | |
554 | \r | |
555 | //\r | |
556 | // Let all processors program SMM MTRRs together\r | |
557 | //\r | |
558 | ReleaseAllAPs ();\r | |
559 | \r | |
560 | //\r | |
561 | // WaitForSemaphore() may wait for ever if an AP happens to enter SMM at\r | |
562 | // exactly this point. Please make sure PcdCpuSmmMaxSyncLoops has been set\r | |
563 | // to a large enough value to avoid this situation.\r | |
564 | //\r | |
565 | ReplaceOSMtrrs (CpuIndex);\r | |
566 | \r | |
567 | //\r | |
568 | // Wait for all APs to complete their MTRR programming\r | |
569 | //\r | |
570 | WaitForAllAPs (ApCount);\r | |
571 | }\r | |
572 | }\r | |
573 | \r | |
574 | //\r | |
575 | // The BUSY lock is initialized to Acquired state\r | |
576 | //\r | |
170a3c1e | 577 | AcquireSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy);\r |
529a5a86 MK |
578 | \r |
579 | //\r | |
9f419739 | 580 | // Perform the pre tasks\r |
529a5a86 | 581 | //\r |
9f419739 | 582 | PerformPreTasks ();\r |
529a5a86 MK |
583 | \r |
584 | //\r | |
585 | // Invoke SMM Foundation EntryPoint with the processor information context.\r | |
586 | //\r | |
587 | gSmmCpuPrivate->SmmCoreEntry (&gSmmCpuPrivate->SmmCoreEntryContext);\r | |
588 | \r | |
589 | //\r | |
590 | // Make sure all APs have completed their pending none-block tasks\r | |
591 | //\r | |
51dd408a | 592 | WaitForAllAPsNotBusy (TRUE);\r |
529a5a86 MK |
593 | \r |
594 | //\r | |
595 | // Perform the remaining tasks\r | |
596 | //\r | |
597 | PerformRemainingTasks ();\r | |
598 | \r | |
599 | //\r | |
600 | // If Relaxed-AP Sync Mode: gather all available APs after BSP SMM handlers are done, and\r | |
601 | // make those APs to exit SMI synchronously. APs which arrive later will be excluded and\r | |
602 | // will run through freely.\r | |
603 | //\r | |
604 | if (SyncMode != SmmCpuSyncModeTradition && !SmmCpuFeaturesNeedConfigureMtrrs()) {\r | |
605 | \r | |
606 | //\r | |
607 | // Lock the counter down and retrieve the number of APs\r | |
608 | //\r | |
fe3a75bc JF |
609 | *mSmmMpSyncData->AllCpusInSync = TRUE;\r |
610 | ApCount = LockdownSemaphore (mSmmMpSyncData->Counter) - 1;\r | |
529a5a86 MK |
611 | //\r |
612 | // Make sure all APs have their Present flag set\r | |
613 | //\r | |
614 | while (TRUE) {\r | |
615 | PresentCount = 0;\r | |
70911f1f | 616 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r |
ed3d5ecb | 617 | if (*(mSmmMpSyncData->CpuData[Index].Present)) {\r |
529a5a86 MK |
618 | PresentCount ++;\r |
619 | }\r | |
620 | }\r | |
621 | if (PresentCount > ApCount) {\r | |
622 | break;\r | |
623 | }\r | |
624 | }\r | |
625 | }\r | |
626 | \r | |
627 | //\r | |
628 | // Notify all APs to exit\r | |
629 | //\r | |
fe3a75bc | 630 | *mSmmMpSyncData->InsideSmm = FALSE;\r |
529a5a86 MK |
631 | ReleaseAllAPs ();\r |
632 | \r | |
633 | //\r | |
634 | // Wait for all APs to complete their pending tasks\r | |
635 | //\r | |
636 | WaitForAllAPs (ApCount);\r | |
637 | \r | |
638 | if (SmmCpuFeaturesNeedConfigureMtrrs()) {\r | |
639 | //\r | |
640 | // Signal APs to restore MTRRs\r | |
641 | //\r | |
642 | ReleaseAllAPs ();\r | |
643 | \r | |
644 | //\r | |
645 | // Restore OS MTRRs\r | |
646 | //\r | |
647 | SmmCpuFeaturesReenableSmrr ();\r | |
648 | MtrrSetAllMtrrs(&Mtrrs);\r | |
649 | \r | |
650 | //\r | |
651 | // Wait for all APs to complete MTRR programming\r | |
652 | //\r | |
653 | WaitForAllAPs (ApCount);\r | |
654 | }\r | |
655 | \r | |
656 | //\r | |
657 | // Stop source level debug in BSP handler, the code below will not be\r | |
658 | // debugged.\r | |
659 | //\r | |
660 | InitializeDebugAgent (DEBUG_AGENT_INIT_EXIT_SMI, NULL, NULL);\r | |
661 | \r | |
662 | //\r | |
663 | // Signal APs to Reset states/semaphore for this processor\r | |
664 | //\r | |
665 | ReleaseAllAPs ();\r | |
666 | \r | |
667 | //\r | |
668 | // Perform pending operations for hot-plug\r | |
669 | //\r | |
670 | SmmCpuUpdate ();\r | |
671 | \r | |
672 | //\r | |
673 | // Clear the Present flag of BSP\r | |
674 | //\r | |
ed3d5ecb | 675 | *(mSmmMpSyncData->CpuData[CpuIndex].Present) = FALSE;\r |
529a5a86 MK |
676 | \r |
677 | //\r | |
678 | // Gather APs to exit SMM synchronously. Note the Present flag is cleared by now but\r | |
679 | // WaitForAllAps does not depend on the Present flag.\r | |
680 | //\r | |
681 | WaitForAllAPs (ApCount);\r | |
682 | \r | |
51dd408a | 683 | //\r |
b948a496 | 684 | // Reset the tokens buffer.\r |
51dd408a | 685 | //\r |
b948a496 | 686 | ResetTokens ();\r |
51dd408a | 687 | \r |
529a5a86 MK |
688 | //\r |
689 | // Reset BspIndex to -1, meaning BSP has not been elected.\r | |
690 | //\r | |
691 | if (FeaturePcdGet (PcdCpuSmmEnableBspElection)) {\r | |
692 | mSmmMpSyncData->BspIndex = (UINT32)-1;\r | |
693 | }\r | |
694 | \r | |
695 | //\r | |
696 | // Allow APs to check in from this point on\r | |
697 | //\r | |
fe3a75bc JF |
698 | *mSmmMpSyncData->Counter = 0;\r |
699 | *mSmmMpSyncData->AllCpusInSync = FALSE;\r | |
529a5a86 MK |
700 | }\r |
701 | \r | |
702 | /**\r | |
703 | SMI handler for AP.\r | |
704 | \r | |
705 | @param CpuIndex AP processor Index.\r | |
706 | @param ValidSmi Indicates that current SMI is a valid SMI or not.\r | |
707 | @param SyncMode SMM MP sync mode.\r | |
708 | \r | |
709 | **/\r | |
710 | VOID\r | |
711 | APHandler (\r | |
712 | IN UINTN CpuIndex,\r | |
713 | IN BOOLEAN ValidSmi,\r | |
714 | IN SMM_CPU_SYNC_MODE SyncMode\r | |
715 | )\r | |
716 | {\r | |
717 | UINT64 Timer;\r | |
718 | UINTN BspIndex;\r | |
719 | MTRR_SETTINGS Mtrrs;\r | |
51dd408a | 720 | EFI_STATUS ProcedureStatus;\r |
529a5a86 MK |
721 | \r |
722 | //\r | |
723 | // Timeout BSP\r | |
724 | //\r | |
725 | for (Timer = StartSyncTimer ();\r | |
726 | !IsSyncTimerTimeout (Timer) &&\r | |
fe3a75bc | 727 | !(*mSmmMpSyncData->InsideSmm);\r |
529a5a86 MK |
728 | ) {\r |
729 | CpuPause ();\r | |
730 | }\r | |
731 | \r | |
fe3a75bc | 732 | if (!(*mSmmMpSyncData->InsideSmm)) {\r |
529a5a86 MK |
733 | //\r |
734 | // BSP timeout in the first round\r | |
735 | //\r | |
736 | if (mSmmMpSyncData->BspIndex != -1) {\r | |
737 | //\r | |
738 | // BSP Index is known\r | |
739 | //\r | |
740 | BspIndex = mSmmMpSyncData->BspIndex;\r | |
741 | ASSERT (CpuIndex != BspIndex);\r | |
742 | \r | |
743 | //\r | |
744 | // Send SMI IPI to bring BSP in\r | |
745 | //\r | |
746 | SendSmiIpi ((UINT32)gSmmCpuPrivate->ProcessorInfo[BspIndex].ProcessorId);\r | |
747 | \r | |
748 | //\r | |
749 | // Now clock BSP for the 2nd time\r | |
750 | //\r | |
751 | for (Timer = StartSyncTimer ();\r | |
752 | !IsSyncTimerTimeout (Timer) &&\r | |
fe3a75bc | 753 | !(*mSmmMpSyncData->InsideSmm);\r |
529a5a86 MK |
754 | ) {\r |
755 | CpuPause ();\r | |
756 | }\r | |
757 | \r | |
fe3a75bc | 758 | if (!(*mSmmMpSyncData->InsideSmm)) {\r |
529a5a86 MK |
759 | //\r |
760 | // Give up since BSP is unable to enter SMM\r | |
761 | // and signal the completion of this AP\r | |
fe3a75bc | 762 | WaitForSemaphore (mSmmMpSyncData->Counter);\r |
529a5a86 MK |
763 | return;\r |
764 | }\r | |
765 | } else {\r | |
766 | //\r | |
767 | // Don't know BSP index. Give up without sending IPI to BSP.\r | |
768 | //\r | |
fe3a75bc | 769 | WaitForSemaphore (mSmmMpSyncData->Counter);\r |
529a5a86 MK |
770 | return;\r |
771 | }\r | |
772 | }\r | |
773 | \r | |
774 | //\r | |
775 | // BSP is available\r | |
776 | //\r | |
777 | BspIndex = mSmmMpSyncData->BspIndex;\r | |
778 | ASSERT (CpuIndex != BspIndex);\r | |
779 | \r | |
780 | //\r | |
781 | // Mark this processor's presence\r | |
782 | //\r | |
ed3d5ecb | 783 | *(mSmmMpSyncData->CpuData[CpuIndex].Present) = TRUE;\r |
529a5a86 MK |
784 | \r |
785 | if (SyncMode == SmmCpuSyncModeTradition || SmmCpuFeaturesNeedConfigureMtrrs()) {\r | |
786 | //\r | |
787 | // Notify BSP of arrival at this point\r | |
788 | //\r | |
ed3d5ecb | 789 | ReleaseSemaphore (mSmmMpSyncData->CpuData[BspIndex].Run);\r |
529a5a86 MK |
790 | }\r |
791 | \r | |
792 | if (SmmCpuFeaturesNeedConfigureMtrrs()) {\r | |
793 | //\r | |
794 | // Wait for the signal from BSP to backup MTRRs\r | |
795 | //\r | |
ed3d5ecb | 796 | WaitForSemaphore (mSmmMpSyncData->CpuData[CpuIndex].Run);\r |
529a5a86 MK |
797 | \r |
798 | //\r | |
799 | // Backup OS MTRRs\r | |
800 | //\r | |
801 | MtrrGetAllMtrrs(&Mtrrs);\r | |
802 | \r | |
803 | //\r | |
804 | // Signal BSP the completion of this AP\r | |
805 | //\r | |
ed3d5ecb | 806 | ReleaseSemaphore (mSmmMpSyncData->CpuData[BspIndex].Run);\r |
529a5a86 MK |
807 | \r |
808 | //\r | |
809 | // Wait for BSP's signal to program MTRRs\r | |
810 | //\r | |
ed3d5ecb | 811 | WaitForSemaphore (mSmmMpSyncData->CpuData[CpuIndex].Run);\r |
529a5a86 MK |
812 | \r |
813 | //\r | |
814 | // Replace OS MTRRs with SMI MTRRs\r | |
815 | //\r | |
816 | ReplaceOSMtrrs (CpuIndex);\r | |
817 | \r | |
818 | //\r | |
819 | // Signal BSP the completion of this AP\r | |
820 | //\r | |
ed3d5ecb | 821 | ReleaseSemaphore (mSmmMpSyncData->CpuData[BspIndex].Run);\r |
529a5a86 MK |
822 | }\r |
823 | \r | |
824 | while (TRUE) {\r | |
825 | //\r | |
826 | // Wait for something to happen\r | |
827 | //\r | |
ed3d5ecb | 828 | WaitForSemaphore (mSmmMpSyncData->CpuData[CpuIndex].Run);\r |
529a5a86 MK |
829 | \r |
830 | //\r | |
831 | // Check if BSP wants to exit SMM\r | |
832 | //\r | |
fe3a75bc | 833 | if (!(*mSmmMpSyncData->InsideSmm)) {\r |
529a5a86 MK |
834 | break;\r |
835 | }\r | |
836 | \r | |
837 | //\r | |
838 | // BUSY should be acquired by SmmStartupThisAp()\r | |
839 | //\r | |
840 | ASSERT (\r | |
ed3d5ecb | 841 | !AcquireSpinLockOrFail (mSmmMpSyncData->CpuData[CpuIndex].Busy)\r |
529a5a86 MK |
842 | );\r |
843 | \r | |
844 | //\r | |
845 | // Invoke the scheduled procedure\r | |
846 | //\r | |
51dd408a ED |
847 | ProcedureStatus = (*mSmmMpSyncData->CpuData[CpuIndex].Procedure) (\r |
848 | (VOID*)mSmmMpSyncData->CpuData[CpuIndex].Parameter\r | |
849 | );\r | |
850 | if (mSmmMpSyncData->CpuData[CpuIndex].Status != NULL) {\r | |
851 | *mSmmMpSyncData->CpuData[CpuIndex].Status = ProcedureStatus;\r | |
852 | }\r | |
529a5a86 | 853 | \r |
a457823f ED |
854 | if (mSmmMpSyncData->CpuData[CpuIndex].Token != NULL) {\r |
855 | ReleaseToken (CpuIndex);\r | |
856 | }\r | |
857 | \r | |
529a5a86 MK |
858 | //\r |
859 | // Release BUSY\r | |
860 | //\r | |
ed3d5ecb | 861 | ReleaseSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy);\r |
529a5a86 MK |
862 | }\r |
863 | \r | |
864 | if (SmmCpuFeaturesNeedConfigureMtrrs()) {\r | |
865 | //\r | |
866 | // Notify BSP the readiness of this AP to program MTRRs\r | |
867 | //\r | |
ed3d5ecb | 868 | ReleaseSemaphore (mSmmMpSyncData->CpuData[BspIndex].Run);\r |
529a5a86 MK |
869 | \r |
870 | //\r | |
871 | // Wait for the signal from BSP to program MTRRs\r | |
872 | //\r | |
ed3d5ecb | 873 | WaitForSemaphore (mSmmMpSyncData->CpuData[CpuIndex].Run);\r |
529a5a86 MK |
874 | \r |
875 | //\r | |
876 | // Restore OS MTRRs\r | |
877 | //\r | |
878 | SmmCpuFeaturesReenableSmrr ();\r | |
879 | MtrrSetAllMtrrs(&Mtrrs);\r | |
880 | }\r | |
881 | \r | |
882 | //\r | |
883 | // Notify BSP the readiness of this AP to Reset states/semaphore for this processor\r | |
884 | //\r | |
ed3d5ecb | 885 | ReleaseSemaphore (mSmmMpSyncData->CpuData[BspIndex].Run);\r |
529a5a86 MK |
886 | \r |
887 | //\r | |
888 | // Wait for the signal from BSP to Reset states/semaphore for this processor\r | |
889 | //\r | |
ed3d5ecb | 890 | WaitForSemaphore (mSmmMpSyncData->CpuData[CpuIndex].Run);\r |
529a5a86 MK |
891 | \r |
892 | //\r | |
893 | // Reset states/semaphore for this processor\r | |
894 | //\r | |
ed3d5ecb | 895 | *(mSmmMpSyncData->CpuData[CpuIndex].Present) = FALSE;\r |
529a5a86 MK |
896 | \r |
897 | //\r | |
898 | // Notify BSP the readiness of this AP to exit SMM\r | |
899 | //\r | |
ed3d5ecb | 900 | ReleaseSemaphore (mSmmMpSyncData->CpuData[BspIndex].Run);\r |
529a5a86 MK |
901 | \r |
902 | }\r | |
903 | \r | |
904 | /**\r | |
905 | Create 4G PageTable in SMRAM.\r | |
906 | \r | |
717fb604 | 907 | @param[in] Is32BitPageTable Whether the page table is 32-bit PAE\r |
529a5a86 MK |
908 | @return PageTable Address\r |
909 | \r | |
910 | **/\r | |
911 | UINT32\r | |
912 | Gen4GPageTable (\r | |
881520ea | 913 | IN BOOLEAN Is32BitPageTable\r |
529a5a86 MK |
914 | )\r |
915 | {\r | |
916 | VOID *PageTable;\r | |
917 | UINTN Index;\r | |
918 | UINT64 *Pte;\r | |
919 | UINTN PagesNeeded;\r | |
920 | UINTN Low2MBoundary;\r | |
921 | UINTN High2MBoundary;\r | |
922 | UINTN Pages;\r | |
923 | UINTN GuardPage;\r | |
924 | UINT64 *Pdpte;\r | |
925 | UINTN PageIndex;\r | |
926 | UINTN PageAddress;\r | |
927 | \r | |
928 | Low2MBoundary = 0;\r | |
929 | High2MBoundary = 0;\r | |
930 | PagesNeeded = 0;\r | |
931 | if (FeaturePcdGet (PcdCpuSmmStackGuard)) {\r | |
932 | //\r | |
933 | // Add one more page for known good stack, then find the lower 2MB aligned address.\r | |
934 | //\r | |
935 | Low2MBoundary = (mSmmStackArrayBase + EFI_PAGE_SIZE) & ~(SIZE_2MB-1);\r | |
936 | //\r | |
937 | // Add two more pages for known good stack and stack guard page,\r | |
938 | // then find the lower 2MB aligned address.\r | |
939 | //\r | |
940 | High2MBoundary = (mSmmStackArrayEnd - mSmmStackSize + EFI_PAGE_SIZE * 2) & ~(SIZE_2MB-1);\r | |
941 | PagesNeeded = ((High2MBoundary - Low2MBoundary) / SIZE_2MB) + 1;\r | |
942 | }\r | |
943 | //\r | |
944 | // Allocate the page table\r | |
945 | //\r | |
717fb604 | 946 | PageTable = AllocatePageTableMemory (5 + PagesNeeded);\r |
529a5a86 MK |
947 | ASSERT (PageTable != NULL);\r |
948 | \r | |
717fb604 | 949 | PageTable = (VOID *)((UINTN)PageTable);\r |
529a5a86 MK |
950 | Pte = (UINT64*)PageTable;\r |
951 | \r | |
952 | //\r | |
953 | // Zero out all page table entries first\r | |
954 | //\r | |
955 | ZeroMem (Pte, EFI_PAGES_TO_SIZE (1));\r | |
956 | \r | |
957 | //\r | |
958 | // Set Page Directory Pointers\r | |
959 | //\r | |
960 | for (Index = 0; Index < 4; Index++) {\r | |
e62a0eb6 | 961 | Pte[Index] = ((UINTN)PageTable + EFI_PAGE_SIZE * (Index + 1)) | mAddressEncMask |\r |
241f9149 | 962 | (Is32BitPageTable ? IA32_PAE_PDPTE_ATTRIBUTE_BITS : PAGE_ATTRIBUTE_BITS);\r |
529a5a86 MK |
963 | }\r |
964 | Pte += EFI_PAGE_SIZE / sizeof (*Pte);\r | |
965 | \r | |
966 | //\r | |
967 | // Fill in Page Directory Entries\r | |
968 | //\r | |
969 | for (Index = 0; Index < EFI_PAGE_SIZE * 4 / sizeof (*Pte); Index++) {\r | |
241f9149 | 970 | Pte[Index] = (Index << 21) | mAddressEncMask | IA32_PG_PS | PAGE_ATTRIBUTE_BITS;\r |
529a5a86 MK |
971 | }\r |
972 | \r | |
f8c1133b | 973 | Pdpte = (UINT64*)PageTable;\r |
529a5a86 MK |
974 | if (FeaturePcdGet (PcdCpuSmmStackGuard)) {\r |
975 | Pages = (UINTN)PageTable + EFI_PAGES_TO_SIZE (5);\r | |
976 | GuardPage = mSmmStackArrayBase + EFI_PAGE_SIZE;\r | |
529a5a86 | 977 | for (PageIndex = Low2MBoundary; PageIndex <= High2MBoundary; PageIndex += SIZE_2MB) {\r |
241f9149 LD |
978 | Pte = (UINT64*)(UINTN)(Pdpte[BitFieldRead32 ((UINT32)PageIndex, 30, 31)] & ~mAddressEncMask & ~(EFI_PAGE_SIZE - 1));\r |
979 | Pte[BitFieldRead32 ((UINT32)PageIndex, 21, 29)] = (UINT64)Pages | mAddressEncMask | PAGE_ATTRIBUTE_BITS;\r | |
529a5a86 MK |
980 | //\r |
981 | // Fill in Page Table Entries\r | |
982 | //\r | |
983 | Pte = (UINT64*)Pages;\r | |
984 | PageAddress = PageIndex;\r | |
985 | for (Index = 0; Index < EFI_PAGE_SIZE / sizeof (*Pte); Index++) {\r | |
986 | if (PageAddress == GuardPage) {\r | |
987 | //\r | |
988 | // Mark the guard page as non-present\r | |
989 | //\r | |
241f9149 | 990 | Pte[Index] = PageAddress | mAddressEncMask;\r |
529a5a86 MK |
991 | GuardPage += mSmmStackSize;\r |
992 | if (GuardPage > mSmmStackArrayEnd) {\r | |
993 | GuardPage = 0;\r | |
994 | }\r | |
995 | } else {\r | |
241f9149 | 996 | Pte[Index] = PageAddress | mAddressEncMask | PAGE_ATTRIBUTE_BITS;\r |
529a5a86 MK |
997 | }\r |
998 | PageAddress+= EFI_PAGE_SIZE;\r | |
999 | }\r | |
1000 | Pages += EFI_PAGE_SIZE;\r | |
1001 | }\r | |
1002 | }\r | |
1003 | \r | |
f8c1133b JW |
1004 | if ((PcdGet8 (PcdNullPointerDetectionPropertyMask) & BIT1) != 0) {\r |
1005 | Pte = (UINT64*)(UINTN)(Pdpte[0] & ~mAddressEncMask & ~(EFI_PAGE_SIZE - 1));\r | |
1006 | if ((Pte[0] & IA32_PG_PS) == 0) {\r | |
1007 | // 4K-page entries are already mapped. Just hide the first one anyway.\r | |
1008 | Pte = (UINT64*)(UINTN)(Pte[0] & ~mAddressEncMask & ~(EFI_PAGE_SIZE - 1));\r | |
79da2d28 | 1009 | Pte[0] &= ~(UINT64)IA32_PG_P; // Hide page 0\r |
f8c1133b JW |
1010 | } else {\r |
1011 | // Create 4K-page entries\r | |
1012 | Pages = (UINTN)AllocatePageTableMemory (1);\r | |
1013 | ASSERT (Pages != 0);\r | |
1014 | \r | |
1015 | Pte[0] = (UINT64)(Pages | mAddressEncMask | PAGE_ATTRIBUTE_BITS);\r | |
1016 | \r | |
1017 | Pte = (UINT64*)Pages;\r | |
1018 | PageAddress = 0;\r | |
1019 | Pte[0] = PageAddress | mAddressEncMask; // Hide page 0 but present left\r | |
1020 | for (Index = 1; Index < EFI_PAGE_SIZE / sizeof (*Pte); Index++) {\r | |
1021 | PageAddress += EFI_PAGE_SIZE;\r | |
1022 | Pte[Index] = PageAddress | mAddressEncMask | PAGE_ATTRIBUTE_BITS;\r | |
1023 | }\r | |
1024 | }\r | |
1025 | }\r | |
1026 | \r | |
529a5a86 MK |
1027 | return (UINT32)(UINTN)PageTable;\r |
1028 | }\r | |
1029 | \r | |
51dd408a ED |
1030 | /**\r |
1031 | Checks whether the input token is the current used token.\r | |
1032 | \r | |
1033 | @param[in] Token This parameter describes the token that was passed into DispatchProcedure or\r | |
1034 | BroadcastProcedure.\r | |
1035 | \r | |
1036 | @retval TRUE The input token is the current used token.\r | |
1037 | @retval FALSE The input token is not the current used token.\r | |
1038 | **/\r | |
1039 | BOOLEAN\r | |
1040 | IsTokenInUse (\r | |
1041 | IN SPIN_LOCK *Token\r | |
1042 | )\r | |
1043 | {\r | |
1044 | LIST_ENTRY *Link;\r | |
1045 | PROCEDURE_TOKEN *ProcToken;\r | |
1046 | \r | |
1047 | if (Token == NULL) {\r | |
1048 | return FALSE;\r | |
1049 | }\r | |
1050 | \r | |
1051 | Link = GetFirstNode (&gSmmCpuPrivate->TokenList);\r | |
1052 | while (!IsNull (&gSmmCpuPrivate->TokenList, Link)) {\r | |
1053 | ProcToken = PROCEDURE_TOKEN_FROM_LINK (Link);\r | |
1054 | \r | |
b948a496 | 1055 | if (ProcToken->Used && ProcToken->SpinLock == Token) {\r |
51dd408a ED |
1056 | return TRUE;\r |
1057 | }\r | |
1058 | \r | |
1059 | Link = GetNextNode (&gSmmCpuPrivate->TokenList, Link);\r | |
1060 | }\r | |
1061 | \r | |
1062 | return FALSE;\r | |
1063 | }\r | |
1064 | \r | |
1065 | /**\r | |
b948a496 | 1066 | Allocate buffer for the SPIN_LOCK and PROCEDURE_TOKEN.\r |
51dd408a | 1067 | \r |
3fdc47c6 | 1068 | @return First token of the token buffer.\r |
51dd408a | 1069 | **/\r |
3fdc47c6 | 1070 | LIST_ENTRY *\r |
b948a496 ED |
1071 | AllocateTokenBuffer (\r |
1072 | VOID\r | |
51dd408a ED |
1073 | )\r |
1074 | {\r | |
51dd408a | 1075 | UINTN SpinLockSize;\r |
9caaa79d | 1076 | UINT32 TokenCountPerChunk;\r |
b948a496 | 1077 | UINTN Index;\r |
b948a496 ED |
1078 | SPIN_LOCK *SpinLock;\r |
1079 | UINT8 *SpinLockBuffer;\r | |
3fdc47c6 | 1080 | PROCEDURE_TOKEN *ProcTokens;\r |
51dd408a ED |
1081 | \r |
1082 | SpinLockSize = GetSpinLockProperties ();\r | |
b948a496 | 1083 | \r |
9caaa79d | 1084 | TokenCountPerChunk = FixedPcdGet32 (PcdCpuSmmMpTokenCountPerChunk);\r |
b948a496 ED |
1085 | ASSERT (TokenCountPerChunk != 0);\r |
1086 | if (TokenCountPerChunk == 0) {\r | |
1087 | DEBUG ((DEBUG_ERROR, "PcdCpuSmmMpTokenCountPerChunk should not be Zero!\n"));\r | |
1088 | CpuDeadLoop ();\r | |
1089 | }\r | |
1090 | DEBUG ((DEBUG_INFO, "CpuSmm: SpinLock Size = 0x%x, PcdCpuSmmMpTokenCountPerChunk = 0x%x\n", SpinLockSize, TokenCountPerChunk));\r | |
9caaa79d | 1091 | \r |
b948a496 ED |
1092 | //\r |
1093 | // Separate the Spin_lock and Proc_token because the alignment requires by Spin_Lock.\r | |
1094 | //\r | |
1095 | SpinLockBuffer = AllocatePool (SpinLockSize * TokenCountPerChunk);\r | |
1096 | ASSERT (SpinLockBuffer != NULL);\r | |
9caaa79d | 1097 | \r |
3fdc47c6 RN |
1098 | ProcTokens = AllocatePool (sizeof (PROCEDURE_TOKEN) * TokenCountPerChunk);\r |
1099 | ASSERT (ProcTokens != NULL);\r | |
b948a496 ED |
1100 | \r |
1101 | for (Index = 0; Index < TokenCountPerChunk; Index++) {\r | |
1102 | SpinLock = (SPIN_LOCK *)(SpinLockBuffer + SpinLockSize * Index);\r | |
1103 | InitializeSpinLock (SpinLock);\r | |
1104 | \r | |
3fdc47c6 RN |
1105 | ProcTokens[Index].Signature = PROCEDURE_TOKEN_SIGNATURE;\r |
1106 | ProcTokens[Index].SpinLock = SpinLock;\r | |
1107 | ProcTokens[Index].Used = FALSE;\r | |
1108 | ProcTokens[Index].RunningApCount = 0;\r | |
b948a496 | 1109 | \r |
3fdc47c6 | 1110 | InsertTailList (&gSmmCpuPrivate->TokenList, &ProcTokens[Index].Link);\r |
b948a496 | 1111 | }\r |
9caaa79d | 1112 | \r |
3fdc47c6 | 1113 | return &ProcTokens[0].Link;\r |
b948a496 ED |
1114 | }\r |
1115 | \r | |
1116 | /**\r | |
1117 | Get the free token.\r | |
1118 | \r | |
1119 | If no free token, allocate new tokens then return the free one.\r | |
1120 | \r | |
e1879256 ED |
1121 | @param RunningApsCount The Running Aps count for this token.\r |
1122 | \r | |
b948a496 | 1123 | @retval return the first free PROCEDURE_TOKEN.\r |
9caaa79d | 1124 | \r |
b948a496 ED |
1125 | **/\r |
1126 | PROCEDURE_TOKEN *\r | |
1127 | GetFreeToken (\r | |
1128 | IN UINT32 RunningApsCount\r | |
1129 | )\r | |
1130 | {\r | |
1131 | PROCEDURE_TOKEN *NewToken;\r | |
51dd408a | 1132 | \r |
3fdc47c6 RN |
1133 | //\r |
1134 | // If FirstFreeToken meets the end of token list, enlarge the token list.\r | |
1135 | // Set FirstFreeToken to the first free token.\r | |
1136 | //\r | |
1137 | if (gSmmCpuPrivate->FirstFreeToken == &gSmmCpuPrivate->TokenList) {\r | |
1138 | gSmmCpuPrivate->FirstFreeToken = AllocateTokenBuffer ();\r | |
b948a496 | 1139 | }\r |
3fdc47c6 RN |
1140 | NewToken = PROCEDURE_TOKEN_FROM_LINK (gSmmCpuPrivate->FirstFreeToken);\r |
1141 | gSmmCpuPrivate->FirstFreeToken = GetNextNode (&gSmmCpuPrivate->TokenList, gSmmCpuPrivate->FirstFreeToken);\r | |
51dd408a | 1142 | \r |
b948a496 ED |
1143 | NewToken->Used = TRUE;\r |
1144 | NewToken->RunningApCount = RunningApsCount;\r | |
1145 | AcquireSpinLock (NewToken->SpinLock);\r | |
51dd408a | 1146 | \r |
b948a496 | 1147 | return NewToken;\r |
51dd408a ED |
1148 | }\r |
1149 | \r | |
1150 | /**\r | |
1151 | Checks status of specified AP.\r | |
1152 | \r | |
1153 | This function checks whether the specified AP has finished the task assigned\r | |
1154 | by StartupThisAP(), and whether timeout expires.\r | |
1155 | \r | |
1156 | @param[in] Token This parameter describes the token that was passed into DispatchProcedure or\r | |
1157 | BroadcastProcedure.\r | |
1158 | \r | |
1159 | @retval EFI_SUCCESS Specified AP has finished task assigned by StartupThisAPs().\r | |
1160 | @retval EFI_NOT_READY Specified AP has not finished task and timeout has not expired.\r | |
1161 | **/\r | |
1162 | EFI_STATUS\r | |
1163 | IsApReady (\r | |
1164 | IN SPIN_LOCK *Token\r | |
1165 | )\r | |
1166 | {\r | |
1167 | if (AcquireSpinLockOrFail (Token)) {\r | |
1168 | ReleaseSpinLock (Token);\r | |
1169 | return EFI_SUCCESS;\r | |
1170 | }\r | |
1171 | \r | |
1172 | return EFI_NOT_READY;\r | |
1173 | }\r | |
1174 | \r | |
529a5a86 MK |
1175 | /**\r |
1176 | Schedule a procedure to run on the specified CPU.\r | |
1177 | \r | |
717fb604 JY |
1178 | @param[in] Procedure The address of the procedure to run\r |
1179 | @param[in] CpuIndex Target CPU Index\r | |
51dd408a ED |
1180 | @param[in,out] ProcArguments The parameter to pass to the procedure\r |
1181 | @param[in] Token This is an optional parameter that allows the caller to execute the\r | |
1182 | procedure in a blocking or non-blocking fashion. If it is NULL the\r | |
1183 | call is blocking, and the call will not return until the AP has\r | |
1184 | completed the procedure. If the token is not NULL, the call will\r | |
1185 | return immediately. The caller can check whether the procedure has\r | |
1186 | completed with CheckOnProcedure or WaitForProcedure.\r | |
1187 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for the APs to finish\r | |
1188 | execution of Procedure, either for blocking or non-blocking mode.\r | |
1189 | Zero means infinity. If the timeout expires before all APs return\r | |
1190 | from Procedure, then Procedure on the failed APs is terminated. If\r | |
1191 | the timeout expires in blocking mode, the call returns EFI_TIMEOUT.\r | |
1192 | If the timeout expires in non-blocking mode, the timeout determined\r | |
1193 | can be through CheckOnProcedure or WaitForProcedure.\r | |
1194 | Note that timeout support is optional. Whether an implementation\r | |
1195 | supports this feature can be determined via the Attributes data\r | |
1196 | member.\r | |
1197 | @param[in,out] CpuStatus This optional pointer may be used to get the status code returned\r | |
1198 | by Procedure when it completes execution on the target AP, or with\r | |
1199 | EFI_TIMEOUT if the Procedure fails to complete within the optional\r | |
1200 | timeout. The implementation will update this variable with\r | |
1201 | EFI_NOT_READY prior to starting Procedure on the target AP.\r | |
529a5a86 MK |
1202 | \r |
1203 | @retval EFI_INVALID_PARAMETER CpuNumber not valid\r | |
1204 | @retval EFI_INVALID_PARAMETER CpuNumber specifying BSP\r | |
1205 | @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber did not enter SMM\r | |
1206 | @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber is busy\r | |
1207 | @retval EFI_SUCCESS The procedure has been successfully scheduled\r | |
1208 | \r | |
1209 | **/\r | |
1210 | EFI_STATUS\r | |
717fb604 | 1211 | InternalSmmStartupThisAp (\r |
51dd408a ED |
1212 | IN EFI_AP_PROCEDURE2 Procedure,\r |
1213 | IN UINTN CpuIndex,\r | |
1214 | IN OUT VOID *ProcArguments OPTIONAL,\r | |
1215 | IN MM_COMPLETION *Token,\r | |
1216 | IN UINTN TimeoutInMicroseconds,\r | |
1217 | IN OUT EFI_STATUS *CpuStatus\r | |
529a5a86 MK |
1218 | )\r |
1219 | {\r | |
a457823f ED |
1220 | PROCEDURE_TOKEN *ProcToken;\r |
1221 | \r | |
717fb604 JY |
1222 | if (CpuIndex >= gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus) {\r |
1223 | DEBUG((DEBUG_ERROR, "CpuIndex(%d) >= gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus(%d)\n", CpuIndex, gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus));\r | |
1224 | return EFI_INVALID_PARAMETER;\r | |
1225 | }\r | |
1226 | if (CpuIndex == gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu) {\r | |
1227 | DEBUG((DEBUG_ERROR, "CpuIndex(%d) == gSmmCpuPrivate->SmmCoreEntryContext.CurrentlyExecutingCpu\n", CpuIndex));\r | |
529a5a86 MK |
1228 | return EFI_INVALID_PARAMETER;\r |
1229 | }\r | |
b7025df8 JF |
1230 | if (gSmmCpuPrivate->ProcessorInfo[CpuIndex].ProcessorId == INVALID_APIC_ID) {\r |
1231 | return EFI_INVALID_PARAMETER;\r | |
1232 | }\r | |
717fb604 JY |
1233 | if (!(*(mSmmMpSyncData->CpuData[CpuIndex].Present))) {\r |
1234 | if (mSmmMpSyncData->EffectiveSyncMode == SmmCpuSyncModeTradition) {\r | |
1235 | DEBUG((DEBUG_ERROR, "!mSmmMpSyncData->CpuData[%d].Present\n", CpuIndex));\r | |
1236 | }\r | |
1237 | return EFI_INVALID_PARAMETER;\r | |
1238 | }\r | |
1239 | if (gSmmCpuPrivate->Operation[CpuIndex] == SmmCpuRemove) {\r | |
1240 | if (!FeaturePcdGet (PcdCpuHotPlugSupport)) {\r | |
1241 | DEBUG((DEBUG_ERROR, "gSmmCpuPrivate->Operation[%d] == SmmCpuRemove\n", CpuIndex));\r | |
1242 | }\r | |
1243 | return EFI_INVALID_PARAMETER;\r | |
1244 | }\r | |
51dd408a ED |
1245 | if ((TimeoutInMicroseconds != 0) && ((mSmmMp.Attributes & EFI_MM_MP_TIMEOUT_SUPPORTED) == 0)) {\r |
1246 | return EFI_INVALID_PARAMETER;\r | |
1247 | }\r | |
1248 | if (Procedure == NULL) {\r | |
1249 | return EFI_INVALID_PARAMETER;\r | |
1250 | }\r | |
717fb604 | 1251 | \r |
832c4c7a | 1252 | AcquireSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy);\r |
51dd408a | 1253 | \r |
529a5a86 MK |
1254 | mSmmMpSyncData->CpuData[CpuIndex].Procedure = Procedure;\r |
1255 | mSmmMpSyncData->CpuData[CpuIndex].Parameter = ProcArguments;\r | |
51dd408a | 1256 | if (Token != NULL) {\r |
b948a496 | 1257 | ProcToken= GetFreeToken (1);\r |
a457823f ED |
1258 | mSmmMpSyncData->CpuData[CpuIndex].Token = ProcToken;\r |
1259 | *Token = (MM_COMPLETION)ProcToken->SpinLock;\r | |
51dd408a ED |
1260 | }\r |
1261 | mSmmMpSyncData->CpuData[CpuIndex].Status = CpuStatus;\r | |
1262 | if (mSmmMpSyncData->CpuData[CpuIndex].Status != NULL) {\r | |
1263 | *mSmmMpSyncData->CpuData[CpuIndex].Status = EFI_NOT_READY;\r | |
1264 | }\r | |
1265 | \r | |
ed3d5ecb | 1266 | ReleaseSemaphore (mSmmMpSyncData->CpuData[CpuIndex].Run);\r |
529a5a86 | 1267 | \r |
51dd408a | 1268 | if (Token == NULL) {\r |
ed3d5ecb JF |
1269 | AcquireSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy);\r |
1270 | ReleaseSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy);\r | |
529a5a86 | 1271 | }\r |
51dd408a ED |
1272 | \r |
1273 | return EFI_SUCCESS;\r | |
1274 | }\r | |
1275 | \r | |
1276 | /**\r | |
1277 | Worker function to execute a caller provided function on all enabled APs.\r | |
1278 | \r | |
1279 | @param[in] Procedure A pointer to the function to be run on\r | |
1280 | enabled APs of the system.\r | |
1281 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r | |
1282 | APs to return from Procedure, either for\r | |
1283 | blocking or non-blocking mode.\r | |
1284 | @param[in,out] ProcedureArguments The parameter passed into Procedure for\r | |
1285 | all APs.\r | |
1286 | @param[in,out] Token This is an optional parameter that allows the caller to execute the\r | |
1287 | procedure in a blocking or non-blocking fashion. If it is NULL the\r | |
1288 | call is blocking, and the call will not return until the AP has\r | |
1289 | completed the procedure. If the token is not NULL, the call will\r | |
1290 | return immediately. The caller can check whether the procedure has\r | |
1291 | completed with CheckOnProcedure or WaitForProcedure.\r | |
1292 | @param[in,out] CPUStatus This optional pointer may be used to get the status code returned\r | |
1293 | by Procedure when it completes execution on the target AP, or with\r | |
1294 | EFI_TIMEOUT if the Procedure fails to complete within the optional\r | |
1295 | timeout. The implementation will update this variable with\r | |
1296 | EFI_NOT_READY prior to starting Procedure on the target AP.\r | |
1297 | \r | |
1298 | \r | |
1299 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r | |
1300 | the timeout expired.\r | |
1301 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r | |
1302 | to all enabled APs.\r | |
1303 | @retval others Failed to Startup all APs.\r | |
1304 | \r | |
1305 | **/\r | |
1306 | EFI_STATUS\r | |
1307 | InternalSmmStartupAllAPs (\r | |
1308 | IN EFI_AP_PROCEDURE2 Procedure,\r | |
1309 | IN UINTN TimeoutInMicroseconds,\r | |
1310 | IN OUT VOID *ProcedureArguments OPTIONAL,\r | |
1311 | IN OUT MM_COMPLETION *Token,\r | |
1312 | IN OUT EFI_STATUS *CPUStatus\r | |
1313 | )\r | |
1314 | {\r | |
1315 | UINTN Index;\r | |
1316 | UINTN CpuCount;\r | |
a457823f | 1317 | PROCEDURE_TOKEN *ProcToken;\r |
51dd408a ED |
1318 | \r |
1319 | if ((TimeoutInMicroseconds != 0) && ((mSmmMp.Attributes & EFI_MM_MP_TIMEOUT_SUPPORTED) == 0)) {\r | |
1320 | return EFI_INVALID_PARAMETER;\r | |
1321 | }\r | |
1322 | if (Procedure == NULL) {\r | |
1323 | return EFI_INVALID_PARAMETER;\r | |
1324 | }\r | |
1325 | \r | |
1326 | CpuCount = 0;\r | |
70911f1f | 1327 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r |
51dd408a ED |
1328 | if (IsPresentAp (Index)) {\r |
1329 | CpuCount ++;\r | |
1330 | \r | |
1331 | if (gSmmCpuPrivate->Operation[Index] == SmmCpuRemove) {\r | |
1332 | return EFI_INVALID_PARAMETER;\r | |
1333 | }\r | |
1334 | \r | |
1335 | if (!AcquireSpinLockOrFail(mSmmMpSyncData->CpuData[Index].Busy)) {\r | |
1336 | return EFI_NOT_READY;\r | |
1337 | }\r | |
1338 | ReleaseSpinLock (mSmmMpSyncData->CpuData[Index].Busy);\r | |
1339 | }\r | |
1340 | }\r | |
1341 | if (CpuCount == 0) {\r | |
1342 | return EFI_NOT_STARTED;\r | |
1343 | }\r | |
1344 | \r | |
1345 | if (Token != NULL) {\r | |
b948a496 | 1346 | ProcToken = GetFreeToken ((UINT32)mMaxNumberOfCpus);\r |
a457823f ED |
1347 | *Token = (MM_COMPLETION)ProcToken->SpinLock;\r |
1348 | } else {\r | |
1349 | ProcToken = NULL;\r | |
51dd408a ED |
1350 | }\r |
1351 | \r | |
1352 | //\r | |
1353 | // Make sure all BUSY should be acquired.\r | |
1354 | //\r | |
1355 | // Because former code already check mSmmMpSyncData->CpuData[***].Busy for each AP.\r | |
1356 | // Here code always use AcquireSpinLock instead of AcquireSpinLockOrFail for not\r | |
1357 | // block mode.\r | |
1358 | //\r | |
70911f1f | 1359 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r |
51dd408a ED |
1360 | if (IsPresentAp (Index)) {\r |
1361 | AcquireSpinLock (mSmmMpSyncData->CpuData[Index].Busy);\r | |
1362 | }\r | |
1363 | }\r | |
1364 | \r | |
70911f1f | 1365 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r |
51dd408a ED |
1366 | if (IsPresentAp (Index)) {\r |
1367 | mSmmMpSyncData->CpuData[Index].Procedure = (EFI_AP_PROCEDURE2) Procedure;\r | |
1368 | mSmmMpSyncData->CpuData[Index].Parameter = ProcedureArguments;\r | |
a457823f ED |
1369 | if (ProcToken != NULL) {\r |
1370 | mSmmMpSyncData->CpuData[Index].Token = ProcToken;\r | |
51dd408a ED |
1371 | }\r |
1372 | if (CPUStatus != NULL) {\r | |
1373 | mSmmMpSyncData->CpuData[Index].Status = &CPUStatus[Index];\r | |
1374 | if (mSmmMpSyncData->CpuData[Index].Status != NULL) {\r | |
1375 | *mSmmMpSyncData->CpuData[Index].Status = EFI_NOT_READY;\r | |
1376 | }\r | |
1377 | }\r | |
1378 | } else {\r | |
1379 | //\r | |
1380 | // PI spec requirement:\r | |
1381 | // For every excluded processor, the array entry must contain a value of EFI_NOT_STARTED.\r | |
1382 | //\r | |
1383 | if (CPUStatus != NULL) {\r | |
1384 | CPUStatus[Index] = EFI_NOT_STARTED;\r | |
1385 | }\r | |
a457823f ED |
1386 | \r |
1387 | //\r | |
1388 | // Decrease the count to mark this processor(AP or BSP) as finished.\r | |
1389 | //\r | |
1390 | if (ProcToken != NULL) {\r | |
1391 | WaitForSemaphore (&ProcToken->RunningApCount);\r | |
1392 | }\r | |
51dd408a ED |
1393 | }\r |
1394 | }\r | |
1395 | \r | |
1396 | ReleaseAllAPs ();\r | |
1397 | \r | |
1398 | if (Token == NULL) {\r | |
1399 | //\r | |
1400 | // Make sure all APs have completed their tasks.\r | |
1401 | //\r | |
1402 | WaitForAllAPsNotBusy (TRUE);\r | |
1403 | }\r | |
1404 | \r | |
1405 | return EFI_SUCCESS;\r | |
1406 | }\r | |
1407 | \r | |
1408 | /**\r | |
1409 | ISO C99 6.5.2.2 "Function calls", paragraph 9:\r | |
1410 | If the function is defined with a type that is not compatible with\r | |
1411 | the type (of the expression) pointed to by the expression that\r | |
1412 | denotes the called function, the behavior is undefined.\r | |
1413 | \r | |
1414 | So add below wrapper function to convert between EFI_AP_PROCEDURE\r | |
1415 | and EFI_AP_PROCEDURE2.\r | |
1416 | \r | |
1417 | Wrapper for Procedures.\r | |
1418 | \r | |
1419 | @param[in] Buffer Pointer to PROCEDURE_WRAPPER buffer.\r | |
1420 | \r | |
1421 | **/\r | |
1422 | EFI_STATUS\r | |
1423 | EFIAPI\r | |
1424 | ProcedureWrapper (\r | |
5ed4c46f | 1425 | IN VOID *Buffer\r |
51dd408a ED |
1426 | )\r |
1427 | {\r | |
1428 | PROCEDURE_WRAPPER *Wrapper;\r | |
1429 | \r | |
1430 | Wrapper = Buffer;\r | |
1431 | Wrapper->Procedure (Wrapper->ProcedureArgument);\r | |
1432 | \r | |
529a5a86 MK |
1433 | return EFI_SUCCESS;\r |
1434 | }\r | |
1435 | \r | |
717fb604 JY |
1436 | /**\r |
1437 | Schedule a procedure to run on the specified CPU in blocking mode.\r | |
1438 | \r | |
1439 | @param[in] Procedure The address of the procedure to run\r | |
1440 | @param[in] CpuIndex Target CPU Index\r | |
1441 | @param[in, out] ProcArguments The parameter to pass to the procedure\r | |
1442 | \r | |
1443 | @retval EFI_INVALID_PARAMETER CpuNumber not valid\r | |
1444 | @retval EFI_INVALID_PARAMETER CpuNumber specifying BSP\r | |
1445 | @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber did not enter SMM\r | |
1446 | @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber is busy\r | |
1447 | @retval EFI_SUCCESS The procedure has been successfully scheduled\r | |
1448 | \r | |
1449 | **/\r | |
1450 | EFI_STATUS\r | |
1451 | EFIAPI\r | |
1452 | SmmBlockingStartupThisAp (\r | |
1453 | IN EFI_AP_PROCEDURE Procedure,\r | |
1454 | IN UINTN CpuIndex,\r | |
1455 | IN OUT VOID *ProcArguments OPTIONAL\r | |
1456 | )\r | |
1457 | {\r | |
51dd408a ED |
1458 | PROCEDURE_WRAPPER Wrapper;\r |
1459 | \r | |
1460 | Wrapper.Procedure = Procedure;\r | |
1461 | Wrapper.ProcedureArgument = ProcArguments;\r | |
1462 | \r | |
1463 | //\r | |
1464 | // Use wrapper function to convert EFI_AP_PROCEDURE to EFI_AP_PROCEDURE2.\r | |
1465 | //\r | |
1466 | return InternalSmmStartupThisAp (ProcedureWrapper, CpuIndex, &Wrapper, NULL, 0, NULL);\r | |
717fb604 JY |
1467 | }\r |
1468 | \r | |
1469 | /**\r | |
1470 | Schedule a procedure to run on the specified CPU.\r | |
1471 | \r | |
1472 | @param Procedure The address of the procedure to run\r | |
1473 | @param CpuIndex Target CPU Index\r | |
1474 | @param ProcArguments The parameter to pass to the procedure\r | |
1475 | \r | |
1476 | @retval EFI_INVALID_PARAMETER CpuNumber not valid\r | |
1477 | @retval EFI_INVALID_PARAMETER CpuNumber specifying BSP\r | |
1478 | @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber did not enter SMM\r | |
1479 | @retval EFI_INVALID_PARAMETER The AP specified by CpuNumber is busy\r | |
1480 | @retval EFI_SUCCESS The procedure has been successfully scheduled\r | |
1481 | \r | |
1482 | **/\r | |
1483 | EFI_STATUS\r | |
1484 | EFIAPI\r | |
1485 | SmmStartupThisAp (\r | |
1486 | IN EFI_AP_PROCEDURE Procedure,\r | |
1487 | IN UINTN CpuIndex,\r | |
1488 | IN OUT VOID *ProcArguments OPTIONAL\r | |
1489 | )\r | |
1490 | {\r | |
51dd408a ED |
1491 | MM_COMPLETION Token;\r |
1492 | \r | |
1493 | gSmmCpuPrivate->ApWrapperFunc[CpuIndex].Procedure = Procedure;\r | |
1494 | gSmmCpuPrivate->ApWrapperFunc[CpuIndex].ProcedureArgument = ProcArguments;\r | |
1495 | \r | |
1496 | //\r | |
1497 | // Use wrapper function to convert EFI_AP_PROCEDURE to EFI_AP_PROCEDURE2.\r | |
1498 | //\r | |
1499 | return InternalSmmStartupThisAp (\r | |
1500 | ProcedureWrapper,\r | |
1501 | CpuIndex,\r | |
1502 | &gSmmCpuPrivate->ApWrapperFunc[CpuIndex],\r | |
1503 | FeaturePcdGet (PcdCpuSmmBlockStartupThisAp) ? NULL : &Token,\r | |
1504 | 0,\r | |
1505 | NULL\r | |
1506 | );\r | |
717fb604 JY |
1507 | }\r |
1508 | \r | |
f45f2d4a | 1509 | /**\r |
3eed6dda | 1510 | This function sets DR6 & DR7 according to SMM save state, before running SMM C code.\r |
f45f2d4a JY |
1511 | They are useful when you want to enable hardware breakpoints in SMM without entry SMM mode.\r |
1512 | \r | |
1513 | NOTE: It might not be appreciated in runtime since it might\r | |
1514 | conflict with OS debugging facilities. Turn them off in RELEASE.\r | |
1515 | \r | |
1516 | @param CpuIndex CPU Index\r | |
1517 | \r | |
1518 | **/\r | |
1519 | VOID\r | |
1520 | EFIAPI\r | |
1521 | CpuSmmDebugEntry (\r | |
1522 | IN UINTN CpuIndex\r | |
1523 | )\r | |
1524 | {\r | |
1525 | SMRAM_SAVE_STATE_MAP *CpuSaveState;\r | |
7367cc6c | 1526 | \r |
f45f2d4a | 1527 | if (FeaturePcdGet (PcdCpuSmmDebug)) {\r |
717fb604 | 1528 | ASSERT(CpuIndex < mMaxNumberOfCpus);\r |
3eed6dda | 1529 | CpuSaveState = (SMRAM_SAVE_STATE_MAP *)gSmmCpuPrivate->CpuSaveState[CpuIndex];\r |
f45f2d4a JY |
1530 | if (mSmmSaveStateRegisterLma == EFI_SMM_SAVE_STATE_REGISTER_LMA_32BIT) {\r |
1531 | AsmWriteDr6 (CpuSaveState->x86._DR6);\r | |
1532 | AsmWriteDr7 (CpuSaveState->x86._DR7);\r | |
1533 | } else {\r | |
1534 | AsmWriteDr6 ((UINTN)CpuSaveState->x64._DR6);\r | |
1535 | AsmWriteDr7 ((UINTN)CpuSaveState->x64._DR7);\r | |
1536 | }\r | |
1537 | }\r | |
1538 | }\r | |
1539 | \r | |
1540 | /**\r | |
3eed6dda | 1541 | This function restores DR6 & DR7 to SMM save state.\r |
f45f2d4a JY |
1542 | \r |
1543 | NOTE: It might not be appreciated in runtime since it might\r | |
1544 | conflict with OS debugging facilities. Turn them off in RELEASE.\r | |
1545 | \r | |
1546 | @param CpuIndex CPU Index\r | |
1547 | \r | |
1548 | **/\r | |
1549 | VOID\r | |
1550 | EFIAPI\r | |
1551 | CpuSmmDebugExit (\r | |
1552 | IN UINTN CpuIndex\r | |
1553 | )\r | |
1554 | {\r | |
1555 | SMRAM_SAVE_STATE_MAP *CpuSaveState;\r | |
1556 | \r | |
1557 | if (FeaturePcdGet (PcdCpuSmmDebug)) {\r | |
717fb604 | 1558 | ASSERT(CpuIndex < mMaxNumberOfCpus);\r |
3eed6dda | 1559 | CpuSaveState = (SMRAM_SAVE_STATE_MAP *)gSmmCpuPrivate->CpuSaveState[CpuIndex];\r |
f45f2d4a JY |
1560 | if (mSmmSaveStateRegisterLma == EFI_SMM_SAVE_STATE_REGISTER_LMA_32BIT) {\r |
1561 | CpuSaveState->x86._DR7 = (UINT32)AsmReadDr7 ();\r | |
1562 | CpuSaveState->x86._DR6 = (UINT32)AsmReadDr6 ();\r | |
1563 | } else {\r | |
1564 | CpuSaveState->x64._DR7 = AsmReadDr7 ();\r | |
1565 | CpuSaveState->x64._DR6 = AsmReadDr6 ();\r | |
1566 | }\r | |
1567 | }\r | |
1568 | }\r | |
1569 | \r | |
529a5a86 MK |
1570 | /**\r |
1571 | C function for SMI entry, each processor comes here upon SMI trigger.\r | |
1572 | \r | |
1573 | @param CpuIndex CPU Index\r | |
1574 | \r | |
1575 | **/\r | |
1576 | VOID\r | |
1577 | EFIAPI\r | |
1578 | SmiRendezvous (\r | |
1579 | IN UINTN CpuIndex\r | |
1580 | )\r | |
1581 | {\r | |
f85d3ce2 JF |
1582 | EFI_STATUS Status;\r |
1583 | BOOLEAN ValidSmi;\r | |
1584 | BOOLEAN IsBsp;\r | |
1585 | BOOLEAN BspInProgress;\r | |
1586 | UINTN Index;\r | |
1587 | UINTN Cr2;\r | |
717fb604 JY |
1588 | \r |
1589 | ASSERT(CpuIndex < mMaxNumberOfCpus);\r | |
529a5a86 MK |
1590 | \r |
1591 | //\r | |
37f9fea5 VN |
1592 | // Save Cr2 because Page Fault exception in SMM may override its value,\r |
1593 | // when using on-demand paging for above 4G memory.\r | |
529a5a86 | 1594 | //\r |
37f9fea5 VN |
1595 | Cr2 = 0;\r |
1596 | SaveCr2 (&Cr2);\r | |
529a5a86 | 1597 | \r |
51dd408a ED |
1598 | //\r |
1599 | // Call the user register Startup function first.\r | |
1600 | //\r | |
1601 | if (mSmmMpSyncData->StartupProcedure != NULL) {\r | |
1602 | mSmmMpSyncData->StartupProcedure (mSmmMpSyncData->StartupProcArgs);\r | |
1603 | }\r | |
1604 | \r | |
529a5a86 MK |
1605 | //\r |
1606 | // Perform CPU specific entry hooks\r | |
1607 | //\r | |
1608 | SmmCpuFeaturesRendezvousEntry (CpuIndex);\r | |
1609 | \r | |
1610 | //\r | |
1611 | // Determine if this is a valid SMI\r | |
1612 | //\r | |
1613 | ValidSmi = PlatformValidSmi();\r | |
1614 | \r | |
1615 | //\r | |
1616 | // Determine if BSP has been already in progress. Note this must be checked after\r | |
1617 | // ValidSmi because BSP may clear a valid SMI source after checking in.\r | |
1618 | //\r | |
fe3a75bc | 1619 | BspInProgress = *mSmmMpSyncData->InsideSmm;\r |
529a5a86 MK |
1620 | \r |
1621 | if (!BspInProgress && !ValidSmi) {\r | |
1622 | //\r | |
1623 | // If we reach here, it means when we sampled the ValidSmi flag, SMI status had not\r | |
1624 | // been cleared by BSP in a new SMI run (so we have a truly invalid SMI), or SMI\r | |
1625 | // status had been cleared by BSP and an existing SMI run has almost ended. (Note\r | |
1626 | // we sampled ValidSmi flag BEFORE judging BSP-in-progress status.) In both cases, there\r | |
1627 | // is nothing we need to do.\r | |
1628 | //\r | |
1629 | goto Exit;\r | |
1630 | } else {\r | |
1631 | //\r | |
1632 | // Signal presence of this processor\r | |
1633 | //\r | |
fe3a75bc | 1634 | if (ReleaseSemaphore (mSmmMpSyncData->Counter) == 0) {\r |
529a5a86 MK |
1635 | //\r |
1636 | // BSP has already ended the synchronization, so QUIT!!!\r | |
1637 | //\r | |
1638 | \r | |
1639 | //\r | |
1640 | // Wait for BSP's signal to finish SMI\r | |
1641 | //\r | |
fe3a75bc | 1642 | while (*mSmmMpSyncData->AllCpusInSync) {\r |
529a5a86 MK |
1643 | CpuPause ();\r |
1644 | }\r | |
1645 | goto Exit;\r | |
1646 | } else {\r | |
1647 | \r | |
1648 | //\r | |
1649 | // The BUSY lock is initialized to Released state.\r | |
1650 | // This needs to be done early enough to be ready for BSP's SmmStartupThisAp() call.\r | |
1651 | // E.g., with Relaxed AP flow, SmmStartupThisAp() may be called immediately\r | |
1652 | // after AP's present flag is detected.\r | |
1653 | //\r | |
ed3d5ecb | 1654 | InitializeSpinLock (mSmmMpSyncData->CpuData[CpuIndex].Busy);\r |
529a5a86 MK |
1655 | }\r |
1656 | \r | |
529a5a86 MK |
1657 | if (FeaturePcdGet (PcdCpuSmmProfileEnable)) {\r |
1658 | ActivateSmmProfile (CpuIndex);\r | |
1659 | }\r | |
1660 | \r | |
1661 | if (BspInProgress) {\r | |
1662 | //\r | |
1663 | // BSP has been elected. Follow AP path, regardless of ValidSmi flag\r | |
1664 | // as BSP may have cleared the SMI status\r | |
1665 | //\r | |
1666 | APHandler (CpuIndex, ValidSmi, mSmmMpSyncData->EffectiveSyncMode);\r | |
1667 | } else {\r | |
1668 | //\r | |
1669 | // We have a valid SMI\r | |
1670 | //\r | |
1671 | \r | |
1672 | //\r | |
1673 | // Elect BSP\r | |
1674 | //\r | |
1675 | IsBsp = FALSE;\r | |
1676 | if (FeaturePcdGet (PcdCpuSmmEnableBspElection)) {\r | |
1677 | if (!mSmmMpSyncData->SwitchBsp || mSmmMpSyncData->CandidateBsp[CpuIndex]) {\r | |
1678 | //\r | |
1679 | // Call platform hook to do BSP election\r | |
1680 | //\r | |
1681 | Status = PlatformSmmBspElection (&IsBsp);\r | |
1682 | if (EFI_SUCCESS == Status) {\r | |
1683 | //\r | |
1684 | // Platform hook determines successfully\r | |
1685 | //\r | |
1686 | if (IsBsp) {\r | |
1687 | mSmmMpSyncData->BspIndex = (UINT32)CpuIndex;\r | |
1688 | }\r | |
1689 | } else {\r | |
1690 | //\r | |
1691 | // Platform hook fails to determine, use default BSP election method\r | |
1692 | //\r | |
1693 | InterlockedCompareExchange32 (\r | |
1694 | (UINT32*)&mSmmMpSyncData->BspIndex,\r | |
1695 | (UINT32)-1,\r | |
1696 | (UINT32)CpuIndex\r | |
1697 | );\r | |
1698 | }\r | |
1699 | }\r | |
1700 | }\r | |
1701 | \r | |
1702 | //\r | |
1703 | // "mSmmMpSyncData->BspIndex == CpuIndex" means this is the BSP\r | |
1704 | //\r | |
1705 | if (mSmmMpSyncData->BspIndex == CpuIndex) {\r | |
1706 | \r | |
1707 | //\r | |
1708 | // Clear last request for SwitchBsp.\r | |
1709 | //\r | |
1710 | if (mSmmMpSyncData->SwitchBsp) {\r | |
1711 | mSmmMpSyncData->SwitchBsp = FALSE;\r | |
1712 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r | |
1713 | mSmmMpSyncData->CandidateBsp[Index] = FALSE;\r | |
1714 | }\r | |
1715 | }\r | |
1716 | \r | |
1717 | if (FeaturePcdGet (PcdCpuSmmProfileEnable)) {\r | |
1718 | SmmProfileRecordSmiNum ();\r | |
1719 | }\r | |
1720 | \r | |
1721 | //\r | |
1722 | // BSP Handler is always called with a ValidSmi == TRUE\r | |
1723 | //\r | |
1724 | BSPHandler (CpuIndex, mSmmMpSyncData->EffectiveSyncMode);\r | |
529a5a86 MK |
1725 | } else {\r |
1726 | APHandler (CpuIndex, ValidSmi, mSmmMpSyncData->EffectiveSyncMode);\r | |
1727 | }\r | |
1728 | }\r | |
1729 | \r | |
ed3d5ecb | 1730 | ASSERT (*mSmmMpSyncData->CpuData[CpuIndex].Run == 0);\r |
529a5a86 MK |
1731 | \r |
1732 | //\r | |
1733 | // Wait for BSP's signal to exit SMI\r | |
1734 | //\r | |
fe3a75bc | 1735 | while (*mSmmMpSyncData->AllCpusInSync) {\r |
529a5a86 MK |
1736 | CpuPause ();\r |
1737 | }\r | |
1738 | }\r | |
1739 | \r | |
1740 | Exit:\r | |
1741 | SmmCpuFeaturesRendezvousExit (CpuIndex);\r | |
37f9fea5 | 1742 | \r |
529a5a86 MK |
1743 | //\r |
1744 | // Restore Cr2\r | |
1745 | //\r | |
37f9fea5 | 1746 | RestoreCr2 (Cr2);\r |
529a5a86 MK |
1747 | }\r |
1748 | \r | |
51dd408a ED |
1749 | /**\r |
1750 | Allocate buffer for SpinLock and Wrapper function buffer.\r | |
1751 | \r | |
1752 | **/\r | |
1753 | VOID\r | |
1754 | InitializeDataForMmMp (\r | |
1755 | VOID\r | |
1756 | )\r | |
1757 | {\r | |
1758 | gSmmCpuPrivate->ApWrapperFunc = AllocatePool (sizeof (PROCEDURE_WRAPPER) * gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus);\r | |
1759 | ASSERT (gSmmCpuPrivate->ApWrapperFunc != NULL);\r | |
1760 | \r | |
1761 | InitializeListHead (&gSmmCpuPrivate->TokenList);\r | |
b948a496 | 1762 | \r |
3fdc47c6 | 1763 | gSmmCpuPrivate->FirstFreeToken = AllocateTokenBuffer ();\r |
51dd408a ED |
1764 | }\r |
1765 | \r | |
1d648531 JF |
1766 | /**\r |
1767 | Allocate buffer for all semaphores and spin locks.\r | |
1768 | \r | |
1769 | **/\r | |
1770 | VOID\r | |
1771 | InitializeSmmCpuSemaphores (\r | |
1772 | VOID\r | |
1773 | )\r | |
1774 | {\r | |
1775 | UINTN ProcessorCount;\r | |
1776 | UINTN TotalSize;\r | |
1777 | UINTN GlobalSemaphoresSize;\r | |
4e920581 | 1778 | UINTN CpuSemaphoresSize;\r |
1d648531 JF |
1779 | UINTN SemaphoreSize;\r |
1780 | UINTN Pages;\r | |
1781 | UINTN *SemaphoreBlock;\r | |
1782 | UINTN SemaphoreAddr;\r | |
1783 | \r | |
1784 | SemaphoreSize = GetSpinLockProperties ();\r | |
1785 | ProcessorCount = gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus;\r | |
1786 | GlobalSemaphoresSize = (sizeof (SMM_CPU_SEMAPHORE_GLOBAL) / sizeof (VOID *)) * SemaphoreSize;\r | |
4e920581 | 1787 | CpuSemaphoresSize = (sizeof (SMM_CPU_SEMAPHORE_CPU) / sizeof (VOID *)) * ProcessorCount * SemaphoreSize;\r |
31fb3334 | 1788 | TotalSize = GlobalSemaphoresSize + CpuSemaphoresSize;\r |
1d648531 JF |
1789 | DEBUG((EFI_D_INFO, "One Semaphore Size = 0x%x\n", SemaphoreSize));\r |
1790 | DEBUG((EFI_D_INFO, "Total Semaphores Size = 0x%x\n", TotalSize));\r | |
1791 | Pages = EFI_SIZE_TO_PAGES (TotalSize);\r | |
1792 | SemaphoreBlock = AllocatePages (Pages);\r | |
1793 | ASSERT (SemaphoreBlock != NULL);\r | |
1794 | ZeroMem (SemaphoreBlock, TotalSize);\r | |
1795 | \r | |
1796 | SemaphoreAddr = (UINTN)SemaphoreBlock;\r | |
1797 | mSmmCpuSemaphores.SemaphoreGlobal.Counter = (UINT32 *)SemaphoreAddr;\r | |
1798 | SemaphoreAddr += SemaphoreSize;\r | |
1799 | mSmmCpuSemaphores.SemaphoreGlobal.InsideSmm = (BOOLEAN *)SemaphoreAddr;\r | |
1800 | SemaphoreAddr += SemaphoreSize;\r | |
1801 | mSmmCpuSemaphores.SemaphoreGlobal.AllCpusInSync = (BOOLEAN *)SemaphoreAddr;\r | |
1802 | SemaphoreAddr += SemaphoreSize;\r | |
1803 | mSmmCpuSemaphores.SemaphoreGlobal.PFLock = (SPIN_LOCK *)SemaphoreAddr;\r | |
1804 | SemaphoreAddr += SemaphoreSize;\r | |
1805 | mSmmCpuSemaphores.SemaphoreGlobal.CodeAccessCheckLock\r | |
1806 | = (SPIN_LOCK *)SemaphoreAddr;\r | |
6c4c15fa | 1807 | SemaphoreAddr += SemaphoreSize;\r |
6c4c15fa | 1808 | \r |
4e920581 JF |
1809 | SemaphoreAddr = (UINTN)SemaphoreBlock + GlobalSemaphoresSize;\r |
1810 | mSmmCpuSemaphores.SemaphoreCpu.Busy = (SPIN_LOCK *)SemaphoreAddr;\r | |
1811 | SemaphoreAddr += ProcessorCount * SemaphoreSize;\r | |
1812 | mSmmCpuSemaphores.SemaphoreCpu.Run = (UINT32 *)SemaphoreAddr;\r | |
1813 | SemaphoreAddr += ProcessorCount * SemaphoreSize;\r | |
1814 | mSmmCpuSemaphores.SemaphoreCpu.Present = (BOOLEAN *)SemaphoreAddr;\r | |
1815 | \r | |
fe3a75bc JF |
1816 | mPFLock = mSmmCpuSemaphores.SemaphoreGlobal.PFLock;\r |
1817 | mConfigSmmCodeAccessCheckLock = mSmmCpuSemaphores.SemaphoreGlobal.CodeAccessCheckLock;\r | |
1818 | \r | |
1d648531 JF |
1819 | mSemaphoreSize = SemaphoreSize;\r |
1820 | }\r | |
529a5a86 MK |
1821 | \r |
1822 | /**\r | |
1823 | Initialize un-cacheable data.\r | |
1824 | \r | |
1825 | **/\r | |
1826 | VOID\r | |
1827 | EFIAPI\r | |
1828 | InitializeMpSyncData (\r | |
1829 | VOID\r | |
1830 | )\r | |
1831 | {\r | |
8b9311b7 JF |
1832 | UINTN CpuIndex;\r |
1833 | \r | |
529a5a86 | 1834 | if (mSmmMpSyncData != NULL) {\r |
e78a2a49 JF |
1835 | //\r |
1836 | // mSmmMpSyncDataSize includes one structure of SMM_DISPATCHER_MP_SYNC_DATA, one\r | |
1837 | // CpuData array of SMM_CPU_DATA_BLOCK and one CandidateBsp array of BOOLEAN.\r | |
1838 | //\r | |
1839 | ZeroMem (mSmmMpSyncData, mSmmMpSyncDataSize);\r | |
529a5a86 MK |
1840 | mSmmMpSyncData->CpuData = (SMM_CPU_DATA_BLOCK *)((UINT8 *)mSmmMpSyncData + sizeof (SMM_DISPATCHER_MP_SYNC_DATA));\r |
1841 | mSmmMpSyncData->CandidateBsp = (BOOLEAN *)(mSmmMpSyncData->CpuData + gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus);\r | |
1842 | if (FeaturePcdGet (PcdCpuSmmEnableBspElection)) {\r | |
1843 | //\r | |
1844 | // Enable BSP election by setting BspIndex to -1\r | |
1845 | //\r | |
1846 | mSmmMpSyncData->BspIndex = (UINT32)-1;\r | |
1847 | }\r | |
b43dd229 | 1848 | mSmmMpSyncData->EffectiveSyncMode = mCpuSmmSyncMode;\r |
1d648531 | 1849 | \r |
8b9311b7 JF |
1850 | mSmmMpSyncData->Counter = mSmmCpuSemaphores.SemaphoreGlobal.Counter;\r |
1851 | mSmmMpSyncData->InsideSmm = mSmmCpuSemaphores.SemaphoreGlobal.InsideSmm;\r | |
1852 | mSmmMpSyncData->AllCpusInSync = mSmmCpuSemaphores.SemaphoreGlobal.AllCpusInSync;\r | |
1853 | ASSERT (mSmmMpSyncData->Counter != NULL && mSmmMpSyncData->InsideSmm != NULL &&\r | |
1854 | mSmmMpSyncData->AllCpusInSync != NULL);\r | |
1855 | *mSmmMpSyncData->Counter = 0;\r | |
1856 | *mSmmMpSyncData->InsideSmm = FALSE;\r | |
1857 | *mSmmMpSyncData->AllCpusInSync = FALSE;\r | |
1858 | \r | |
1859 | for (CpuIndex = 0; CpuIndex < gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus; CpuIndex ++) {\r | |
1860 | mSmmMpSyncData->CpuData[CpuIndex].Busy =\r | |
1861 | (SPIN_LOCK *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Busy + mSemaphoreSize * CpuIndex);\r | |
1862 | mSmmMpSyncData->CpuData[CpuIndex].Run =\r | |
1863 | (UINT32 *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Run + mSemaphoreSize * CpuIndex);\r | |
1864 | mSmmMpSyncData->CpuData[CpuIndex].Present =\r | |
1865 | (BOOLEAN *)((UINTN)mSmmCpuSemaphores.SemaphoreCpu.Present + mSemaphoreSize * CpuIndex);\r | |
56e4a7d7 JF |
1866 | *(mSmmMpSyncData->CpuData[CpuIndex].Busy) = 0;\r |
1867 | *(mSmmMpSyncData->CpuData[CpuIndex].Run) = 0;\r | |
1868 | *(mSmmMpSyncData->CpuData[CpuIndex].Present) = FALSE;\r | |
8b9311b7 | 1869 | }\r |
529a5a86 MK |
1870 | }\r |
1871 | }\r | |
1872 | \r | |
1873 | /**\r | |
1874 | Initialize global data for MP synchronization.\r | |
1875 | \r | |
3eb69b08 JY |
1876 | @param Stacks Base address of SMI stack buffer for all processors.\r |
1877 | @param StackSize Stack size for each processor in SMM.\r | |
1878 | @param ShadowStackSize Shadow Stack size for each processor in SMM.\r | |
529a5a86 MK |
1879 | \r |
1880 | **/\r | |
1881 | UINT32\r | |
1882 | InitializeMpServiceData (\r | |
1883 | IN VOID *Stacks,\r | |
3eb69b08 JY |
1884 | IN UINTN StackSize,\r |
1885 | IN UINTN ShadowStackSize\r | |
529a5a86 MK |
1886 | )\r |
1887 | {\r | |
1888 | UINT32 Cr3;\r | |
1889 | UINTN Index;\r | |
529a5a86 | 1890 | UINT8 *GdtTssTables;\r |
529a5a86 | 1891 | UINTN GdtTableStepSize;\r |
ba40cb31 MK |
1892 | CPUID_VERSION_INFO_EDX RegEdx;\r |
1893 | \r | |
1894 | //\r | |
1895 | // Determine if this CPU supports machine check\r | |
1896 | //\r | |
1897 | AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &RegEdx.Uint32);\r | |
1898 | mMachineCheckSupported = (BOOLEAN)(RegEdx.Bits.MCA == 1);\r | |
529a5a86 | 1899 | \r |
8b9311b7 JF |
1900 | //\r |
1901 | // Allocate memory for all locks and semaphores\r | |
1902 | //\r | |
1903 | InitializeSmmCpuSemaphores ();\r | |
1904 | \r | |
d67b73cc JF |
1905 | //\r |
1906 | // Initialize mSmmMpSyncData\r | |
1907 | //\r | |
1908 | mSmmMpSyncDataSize = sizeof (SMM_DISPATCHER_MP_SYNC_DATA) +\r | |
1909 | (sizeof (SMM_CPU_DATA_BLOCK) + sizeof (BOOLEAN)) * gSmmCpuPrivate->SmmCoreEntryContext.NumberOfCpus;\r | |
1910 | mSmmMpSyncData = (SMM_DISPATCHER_MP_SYNC_DATA*) AllocatePages (EFI_SIZE_TO_PAGES (mSmmMpSyncDataSize));\r | |
1911 | ASSERT (mSmmMpSyncData != NULL);\r | |
b43dd229 | 1912 | mCpuSmmSyncMode = (SMM_CPU_SYNC_MODE)PcdGet8 (PcdCpuSmmSyncMode);\r |
d67b73cc JF |
1913 | InitializeMpSyncData ();\r |
1914 | \r | |
529a5a86 MK |
1915 | //\r |
1916 | // Initialize physical address mask\r | |
1917 | // NOTE: Physical memory above virtual address limit is not supported !!!\r | |
1918 | //\r | |
1919 | AsmCpuid (0x80000008, (UINT32*)&Index, NULL, NULL, NULL);\r | |
1920 | gPhyMask = LShiftU64 (1, (UINT8)Index) - 1;\r | |
1921 | gPhyMask &= (1ull << 48) - EFI_PAGE_SIZE;\r | |
1922 | \r | |
1923 | //\r | |
1924 | // Create page tables\r | |
1925 | //\r | |
1926 | Cr3 = SmmInitPageTable ();\r | |
1927 | \r | |
fe5f1949 | 1928 | GdtTssTables = InitGdt (Cr3, &GdtTableStepSize);\r |
529a5a86 MK |
1929 | \r |
1930 | //\r | |
f12367a0 | 1931 | // Install SMI handler for each CPU\r |
529a5a86 MK |
1932 | //\r |
1933 | for (Index = 0; Index < mMaxNumberOfCpus; Index++) {\r | |
529a5a86 MK |
1934 | InstallSmiHandler (\r |
1935 | Index,\r | |
1936 | (UINT32)mCpuHotPlugData.SmBase[Index],\r | |
3eb69b08 | 1937 | (VOID*)((UINTN)Stacks + (StackSize + ShadowStackSize) * Index),\r |
529a5a86 | 1938 | StackSize,\r |
f12367a0 MK |
1939 | (UINTN)(GdtTssTables + GdtTableStepSize * Index),\r |
1940 | gcSmiGdtr.Limit + 1,\r | |
529a5a86 MK |
1941 | gcSmiIdtr.Base,\r |
1942 | gcSmiIdtr.Limit + 1,\r | |
1943 | Cr3\r | |
1944 | );\r | |
1945 | }\r | |
1946 | \r | |
529a5a86 MK |
1947 | //\r |
1948 | // Record current MTRR settings\r | |
1949 | //\r | |
26ab5ac3 MK |
1950 | ZeroMem (&gSmiMtrrs, sizeof (gSmiMtrrs));\r |
1951 | MtrrGetAllMtrrs (&gSmiMtrrs);\r | |
529a5a86 MK |
1952 | \r |
1953 | return Cr3;\r | |
1954 | }\r | |
1955 | \r | |
1956 | /**\r | |
1957 | \r | |
1958 | Register the SMM Foundation entry point.\r | |
1959 | \r | |
1960 | @param This Pointer to EFI_SMM_CONFIGURATION_PROTOCOL instance\r | |
1961 | @param SmmEntryPoint SMM Foundation EntryPoint\r | |
1962 | \r | |
1963 | @retval EFI_SUCCESS Successfully to register SMM foundation entry point\r | |
1964 | \r | |
1965 | **/\r | |
1966 | EFI_STATUS\r | |
1967 | EFIAPI\r | |
1968 | RegisterSmmEntry (\r | |
1969 | IN CONST EFI_SMM_CONFIGURATION_PROTOCOL *This,\r | |
1970 | IN EFI_SMM_ENTRY_POINT SmmEntryPoint\r | |
1971 | )\r | |
1972 | {\r | |
1973 | //\r | |
1974 | // Record SMM Foundation EntryPoint, later invoke it on SMI entry vector.\r | |
1975 | //\r | |
1976 | gSmmCpuPrivate->SmmCoreEntry = SmmEntryPoint;\r | |
1977 | return EFI_SUCCESS;\r | |
1978 | }\r | |
51dd408a ED |
1979 | \r |
1980 | /**\r | |
1981 | \r | |
1982 | Register the SMM Foundation entry point.\r | |
1983 | \r | |
1984 | @param[in] Procedure A pointer to the code stream to be run on the designated target AP\r | |
1985 | of the system. Type EFI_AP_PROCEDURE is defined below in Volume 2\r | |
1986 | with the related definitions of\r | |
1987 | EFI_MP_SERVICES_PROTOCOL.StartupAllAPs.\r | |
1988 | If caller may pass a value of NULL to deregister any existing\r | |
1989 | startup procedure.\r | |
073f2ced | 1990 | @param[in,out] ProcedureArguments Allows the caller to pass a list of parameters to the code that is\r |
51dd408a ED |
1991 | run by the AP. It is an optional common mailbox between APs and\r |
1992 | the caller to share information\r | |
1993 | \r | |
1994 | @retval EFI_SUCCESS The Procedure has been set successfully.\r | |
1995 | @retval EFI_INVALID_PARAMETER The Procedure is NULL but ProcedureArguments not NULL.\r | |
1996 | \r | |
1997 | **/\r | |
1998 | EFI_STATUS\r | |
1999 | RegisterStartupProcedure (\r | |
073f2ced SZ |
2000 | IN EFI_AP_PROCEDURE Procedure,\r |
2001 | IN OUT VOID *ProcedureArguments OPTIONAL\r | |
51dd408a ED |
2002 | )\r |
2003 | {\r | |
2004 | if (Procedure == NULL && ProcedureArguments != NULL) {\r | |
2005 | return EFI_INVALID_PARAMETER;\r | |
2006 | }\r | |
2007 | if (mSmmMpSyncData == NULL) {\r | |
2008 | return EFI_NOT_READY;\r | |
2009 | }\r | |
2010 | \r | |
2011 | mSmmMpSyncData->StartupProcedure = Procedure;\r | |
2012 | mSmmMpSyncData->StartupProcArgs = ProcedureArguments;\r | |
2013 | \r | |
2014 | return EFI_SUCCESS;\r | |
2015 | }\r |