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3e8ad6bd JF |
1 | /** @file\r |
2 | CPU MP Initialize Library common functions.\r | |
3 | \r | |
a2ea6894 | 4 | Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>\r |
3e8ad6bd JF |
5 | This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "MpLib.h"\r | |
16 | \r | |
93ca4c0f JF |
17 | EFI_GUID mCpuInitMpLibHobGuid = CPU_INIT_MP_LIB_HOB_GUID;\r |
18 | \r | |
7c3f2a12 JF |
19 | /**\r |
20 | The function will check if BSP Execute Disable is enabled.\r | |
844b2d07 JF |
21 | \r |
22 | DxeIpl may have enabled Execute Disable for BSP, APs need to\r | |
23 | get the status and sync up the settings.\r | |
24 | If BSP's CR0.Paging is not set, BSP execute Disble feature is\r | |
25 | not working actually.\r | |
7c3f2a12 JF |
26 | \r |
27 | @retval TRUE BSP Execute Disable is enabled.\r | |
28 | @retval FALSE BSP Execute Disable is not enabled.\r | |
29 | **/\r | |
30 | BOOLEAN\r | |
31 | IsBspExecuteDisableEnabled (\r | |
32 | VOID\r | |
33 | )\r | |
34 | {\r | |
35 | UINT32 Eax;\r | |
36 | CPUID_EXTENDED_CPU_SIG_EDX Edx;\r | |
37 | MSR_IA32_EFER_REGISTER EferMsr;\r | |
38 | BOOLEAN Enabled;\r | |
844b2d07 | 39 | IA32_CR0 Cr0;\r |
7c3f2a12 JF |
40 | \r |
41 | Enabled = FALSE;\r | |
844b2d07 JF |
42 | Cr0.UintN = AsmReadCr0 ();\r |
43 | if (Cr0.Bits.PG != 0) {\r | |
7c3f2a12 | 44 | //\r |
844b2d07 | 45 | // If CR0 Paging bit is set\r |
7c3f2a12 | 46 | //\r |
844b2d07 JF |
47 | AsmCpuid (CPUID_EXTENDED_FUNCTION, &Eax, NULL, NULL, NULL);\r |
48 | if (Eax >= CPUID_EXTENDED_CPU_SIG) {\r | |
49 | AsmCpuid (CPUID_EXTENDED_CPU_SIG, NULL, NULL, NULL, &Edx.Uint32);\r | |
7c3f2a12 | 50 | //\r |
844b2d07 JF |
51 | // CPUID 0x80000001\r |
52 | // Bit 20: Execute Disable Bit available.\r | |
7c3f2a12 | 53 | //\r |
844b2d07 JF |
54 | if (Edx.Bits.NX != 0) {\r |
55 | EferMsr.Uint64 = AsmReadMsr64 (MSR_IA32_EFER);\r | |
56 | //\r | |
57 | // MSR 0xC0000080\r | |
58 | // Bit 11: Execute Disable Bit enable.\r | |
59 | //\r | |
60 | if (EferMsr.Bits.NXE != 0) {\r | |
61 | Enabled = TRUE;\r | |
62 | }\r | |
7c3f2a12 JF |
63 | }\r |
64 | }\r | |
65 | }\r | |
66 | \r | |
67 | return Enabled;\r | |
68 | }\r | |
69 | \r | |
41be0da5 JF |
70 | /**\r |
71 | Worker function for SwitchBSP().\r | |
72 | \r | |
73 | Worker function for SwitchBSP(), assigned to the AP which is intended\r | |
74 | to become BSP.\r | |
75 | \r | |
76 | @param[in] Buffer Pointer to CPU MP Data\r | |
77 | **/\r | |
78 | VOID\r | |
79 | EFIAPI\r | |
80 | FutureBSPProc (\r | |
81 | IN VOID *Buffer\r | |
82 | )\r | |
83 | {\r | |
84 | CPU_MP_DATA *DataInHob;\r | |
85 | \r | |
86 | DataInHob = (CPU_MP_DATA *) Buffer;\r | |
87 | AsmExchangeRole (&DataInHob->APInfo, &DataInHob->BSPInfo);\r | |
88 | }\r | |
89 | \r | |
03a1a925 JF |
90 | /**\r |
91 | Get the Application Processors state.\r | |
92 | \r | |
93 | @param[in] CpuData The pointer to CPU_AP_DATA of specified AP\r | |
94 | \r | |
95 | @return The AP status\r | |
96 | **/\r | |
97 | CPU_STATE\r | |
98 | GetApState (\r | |
99 | IN CPU_AP_DATA *CpuData\r | |
100 | )\r | |
101 | {\r | |
102 | return CpuData->State;\r | |
103 | }\r | |
104 | \r | |
105 | /**\r | |
106 | Set the Application Processors state.\r | |
107 | \r | |
108 | @param[in] CpuData The pointer to CPU_AP_DATA of specified AP\r | |
109 | @param[in] State The AP status\r | |
110 | **/\r | |
111 | VOID\r | |
112 | SetApState (\r | |
113 | IN CPU_AP_DATA *CpuData,\r | |
114 | IN CPU_STATE State\r | |
115 | )\r | |
116 | {\r | |
117 | AcquireSpinLock (&CpuData->ApLock);\r | |
118 | CpuData->State = State;\r | |
119 | ReleaseSpinLock (&CpuData->ApLock);\r | |
120 | }\r | |
3e8ad6bd | 121 | \r |
ffab2442 | 122 | /**\r |
f70174d6 | 123 | Save BSP's local APIC timer setting.\r |
ffab2442 JF |
124 | \r |
125 | @param[in] CpuMpData Pointer to CPU MP Data\r | |
126 | **/\r | |
127 | VOID\r | |
128 | SaveLocalApicTimerSetting (\r | |
129 | IN CPU_MP_DATA *CpuMpData\r | |
130 | )\r | |
131 | {\r | |
132 | //\r | |
133 | // Record the current local APIC timer setting of BSP\r | |
134 | //\r | |
135 | GetApicTimerState (\r | |
136 | &CpuMpData->DivideValue,\r | |
137 | &CpuMpData->PeriodicMode,\r | |
138 | &CpuMpData->Vector\r | |
139 | );\r | |
140 | CpuMpData->CurrentTimerCount = GetApicTimerCurrentCount ();\r | |
141 | CpuMpData->TimerInterruptState = GetApicTimerInterruptState ();\r | |
142 | }\r | |
143 | \r | |
144 | /**\r | |
145 | Sync local APIC timer setting from BSP to AP.\r | |
146 | \r | |
147 | @param[in] CpuMpData Pointer to CPU MP Data\r | |
148 | **/\r | |
149 | VOID\r | |
150 | SyncLocalApicTimerSetting (\r | |
151 | IN CPU_MP_DATA *CpuMpData\r | |
152 | )\r | |
153 | {\r | |
154 | //\r | |
155 | // Sync local APIC timer setting from BSP to AP\r | |
156 | //\r | |
157 | InitializeApicTimer (\r | |
158 | CpuMpData->DivideValue,\r | |
159 | CpuMpData->CurrentTimerCount,\r | |
160 | CpuMpData->PeriodicMode,\r | |
161 | CpuMpData->Vector\r | |
162 | );\r | |
163 | //\r | |
164 | // Disable AP's local APIC timer interrupt\r | |
165 | //\r | |
166 | DisableApicTimerInterrupt ();\r | |
167 | }\r | |
168 | \r | |
68cb9330 JF |
169 | /**\r |
170 | Save the volatile registers required to be restored following INIT IPI.\r | |
171 | \r | |
172 | @param[out] VolatileRegisters Returns buffer saved the volatile resisters\r | |
173 | **/\r | |
174 | VOID\r | |
175 | SaveVolatileRegisters (\r | |
176 | OUT CPU_VOLATILE_REGISTERS *VolatileRegisters\r | |
177 | )\r | |
178 | {\r | |
179 | CPUID_VERSION_INFO_EDX VersionInfoEdx;\r | |
180 | \r | |
181 | VolatileRegisters->Cr0 = AsmReadCr0 ();\r | |
182 | VolatileRegisters->Cr3 = AsmReadCr3 ();\r | |
183 | VolatileRegisters->Cr4 = AsmReadCr4 ();\r | |
184 | \r | |
185 | AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &VersionInfoEdx.Uint32);\r | |
186 | if (VersionInfoEdx.Bits.DE != 0) {\r | |
187 | //\r | |
188 | // If processor supports Debugging Extensions feature\r | |
189 | // by CPUID.[EAX=01H]:EDX.BIT2\r | |
190 | //\r | |
191 | VolatileRegisters->Dr0 = AsmReadDr0 ();\r | |
192 | VolatileRegisters->Dr1 = AsmReadDr1 ();\r | |
193 | VolatileRegisters->Dr2 = AsmReadDr2 ();\r | |
194 | VolatileRegisters->Dr3 = AsmReadDr3 ();\r | |
195 | VolatileRegisters->Dr6 = AsmReadDr6 ();\r | |
196 | VolatileRegisters->Dr7 = AsmReadDr7 ();\r | |
197 | }\r | |
e9415e48 JW |
198 | \r |
199 | AsmReadGdtr (&VolatileRegisters->Gdtr);\r | |
200 | AsmReadIdtr (&VolatileRegisters->Idtr);\r | |
201 | VolatileRegisters->Tr = AsmReadTr ();\r | |
68cb9330 JF |
202 | }\r |
203 | \r | |
204 | /**\r | |
205 | Restore the volatile registers following INIT IPI.\r | |
206 | \r | |
207 | @param[in] VolatileRegisters Pointer to volatile resisters\r | |
208 | @param[in] IsRestoreDr TRUE: Restore DRx if supported\r | |
209 | FALSE: Do not restore DRx\r | |
210 | **/\r | |
211 | VOID\r | |
212 | RestoreVolatileRegisters (\r | |
213 | IN CPU_VOLATILE_REGISTERS *VolatileRegisters,\r | |
214 | IN BOOLEAN IsRestoreDr\r | |
215 | )\r | |
216 | {\r | |
217 | CPUID_VERSION_INFO_EDX VersionInfoEdx;\r | |
e9415e48 | 218 | IA32_TSS_DESCRIPTOR *Tss;\r |
68cb9330 JF |
219 | \r |
220 | AsmWriteCr0 (VolatileRegisters->Cr0);\r | |
221 | AsmWriteCr3 (VolatileRegisters->Cr3);\r | |
222 | AsmWriteCr4 (VolatileRegisters->Cr4);\r | |
223 | \r | |
224 | if (IsRestoreDr) {\r | |
225 | AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &VersionInfoEdx.Uint32);\r | |
226 | if (VersionInfoEdx.Bits.DE != 0) {\r | |
227 | //\r | |
228 | // If processor supports Debugging Extensions feature\r | |
229 | // by CPUID.[EAX=01H]:EDX.BIT2\r | |
230 | //\r | |
231 | AsmWriteDr0 (VolatileRegisters->Dr0);\r | |
232 | AsmWriteDr1 (VolatileRegisters->Dr1);\r | |
233 | AsmWriteDr2 (VolatileRegisters->Dr2);\r | |
234 | AsmWriteDr3 (VolatileRegisters->Dr3);\r | |
235 | AsmWriteDr6 (VolatileRegisters->Dr6);\r | |
236 | AsmWriteDr7 (VolatileRegisters->Dr7);\r | |
237 | }\r | |
238 | }\r | |
e9415e48 JW |
239 | \r |
240 | AsmWriteGdtr (&VolatileRegisters->Gdtr);\r | |
241 | AsmWriteIdtr (&VolatileRegisters->Idtr);\r | |
242 | if (VolatileRegisters->Tr != 0 &&\r | |
243 | VolatileRegisters->Tr < VolatileRegisters->Gdtr.Limit) {\r | |
244 | Tss = (IA32_TSS_DESCRIPTOR *)(VolatileRegisters->Gdtr.Base +\r | |
245 | VolatileRegisters->Tr);\r | |
d69ba6a7 | 246 | if (Tss->Bits.P == 1) {\r |
e9415e48 JW |
247 | Tss->Bits.Type &= 0xD; // 1101 - Clear busy bit just in case\r |
248 | AsmWriteTr (VolatileRegisters->Tr);\r | |
249 | }\r | |
250 | }\r | |
68cb9330 JF |
251 | }\r |
252 | \r | |
9ebcf0f4 JF |
253 | /**\r |
254 | Detect whether Mwait-monitor feature is supported.\r | |
255 | \r | |
256 | @retval TRUE Mwait-monitor feature is supported.\r | |
257 | @retval FALSE Mwait-monitor feature is not supported.\r | |
258 | **/\r | |
259 | BOOLEAN\r | |
260 | IsMwaitSupport (\r | |
261 | VOID\r | |
262 | )\r | |
263 | {\r | |
264 | CPUID_VERSION_INFO_ECX VersionInfoEcx;\r | |
265 | \r | |
266 | AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, &VersionInfoEcx.Uint32, NULL);\r | |
267 | return (VersionInfoEcx.Bits.MONITOR == 1) ? TRUE : FALSE;\r | |
268 | }\r | |
269 | \r | |
270 | /**\r | |
271 | Get AP loop mode.\r | |
272 | \r | |
273 | @param[out] MonitorFilterSize Returns the largest monitor-line size in bytes.\r | |
274 | \r | |
275 | @return The AP loop mode.\r | |
276 | **/\r | |
277 | UINT8\r | |
278 | GetApLoopMode (\r | |
279 | OUT UINT32 *MonitorFilterSize\r | |
280 | )\r | |
281 | {\r | |
282 | UINT8 ApLoopMode;\r | |
283 | CPUID_MONITOR_MWAIT_EBX MonitorMwaitEbx;\r | |
284 | \r | |
285 | ASSERT (MonitorFilterSize != NULL);\r | |
286 | \r | |
287 | ApLoopMode = PcdGet8 (PcdCpuApLoopMode);\r | |
288 | ASSERT (ApLoopMode >= ApInHltLoop && ApLoopMode <= ApInRunLoop);\r | |
289 | if (ApLoopMode == ApInMwaitLoop) {\r | |
290 | if (!IsMwaitSupport ()) {\r | |
291 | //\r | |
292 | // If processor does not support MONITOR/MWAIT feature,\r | |
293 | // force AP in Hlt-loop mode\r | |
294 | //\r | |
295 | ApLoopMode = ApInHltLoop;\r | |
296 | }\r | |
297 | }\r | |
298 | \r | |
299 | if (ApLoopMode != ApInMwaitLoop) {\r | |
300 | *MonitorFilterSize = sizeof (UINT32);\r | |
301 | } else {\r | |
302 | //\r | |
303 | // CPUID.[EAX=05H]:EBX.BIT0-15: Largest monitor-line size in bytes\r | |
304 | // CPUID.[EAX=05H].EDX: C-states supported using MWAIT\r | |
305 | //\r | |
306 | AsmCpuid (CPUID_MONITOR_MWAIT, NULL, &MonitorMwaitEbx.Uint32, NULL, NULL);\r | |
307 | *MonitorFilterSize = MonitorMwaitEbx.Bits.LargestMonitorLineSize;\r | |
308 | }\r | |
309 | \r | |
310 | return ApLoopMode;\r | |
311 | }\r | |
b8b04307 | 312 | \r |
8a2d564b JF |
313 | /**\r |
314 | Sort the APIC ID of all processors.\r | |
315 | \r | |
316 | This function sorts the APIC ID of all processors so that processor number is\r | |
317 | assigned in the ascending order of APIC ID which eases MP debugging.\r | |
318 | \r | |
319 | @param[in] CpuMpData Pointer to PEI CPU MP Data\r | |
320 | **/\r | |
321 | VOID\r | |
322 | SortApicId (\r | |
323 | IN CPU_MP_DATA *CpuMpData\r | |
324 | )\r | |
325 | {\r | |
326 | UINTN Index1;\r | |
327 | UINTN Index2;\r | |
328 | UINTN Index3;\r | |
329 | UINT32 ApicId;\r | |
31a1e4da | 330 | CPU_INFO_IN_HOB CpuInfo;\r |
8a2d564b JF |
331 | UINT32 ApCount;\r |
332 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
bafa76ef | 333 | volatile UINT32 *StartupApSignal;\r |
8a2d564b JF |
334 | \r |
335 | ApCount = CpuMpData->CpuCount - 1;\r | |
31a1e4da | 336 | CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;\r |
8a2d564b JF |
337 | if (ApCount != 0) {\r |
338 | for (Index1 = 0; Index1 < ApCount; Index1++) {\r | |
339 | Index3 = Index1;\r | |
340 | //\r | |
341 | // Sort key is the hardware default APIC ID\r | |
342 | //\r | |
31a1e4da | 343 | ApicId = CpuInfoInHob[Index1].ApicId;\r |
8a2d564b | 344 | for (Index2 = Index1 + 1; Index2 <= ApCount; Index2++) {\r |
31a1e4da | 345 | if (ApicId > CpuInfoInHob[Index2].ApicId) {\r |
8a2d564b | 346 | Index3 = Index2;\r |
31a1e4da | 347 | ApicId = CpuInfoInHob[Index2].ApicId;\r |
8a2d564b JF |
348 | }\r |
349 | }\r | |
350 | if (Index3 != Index1) {\r | |
31a1e4da | 351 | CopyMem (&CpuInfo, &CpuInfoInHob[Index3], sizeof (CPU_INFO_IN_HOB));\r |
8a2d564b | 352 | CopyMem (\r |
31a1e4da JF |
353 | &CpuInfoInHob[Index3],\r |
354 | &CpuInfoInHob[Index1],\r | |
355 | sizeof (CPU_INFO_IN_HOB)\r | |
8a2d564b | 356 | );\r |
31a1e4da | 357 | CopyMem (&CpuInfoInHob[Index1], &CpuInfo, sizeof (CPU_INFO_IN_HOB));\r |
bafa76ef SZ |
358 | \r |
359 | //\r | |
360 | // Also exchange the StartupApSignal.\r | |
361 | //\r | |
362 | StartupApSignal = CpuMpData->CpuData[Index3].StartupApSignal;\r | |
363 | CpuMpData->CpuData[Index3].StartupApSignal =\r | |
364 | CpuMpData->CpuData[Index1].StartupApSignal;\r | |
365 | CpuMpData->CpuData[Index1].StartupApSignal = StartupApSignal;\r | |
8a2d564b JF |
366 | }\r |
367 | }\r | |
368 | \r | |
369 | //\r | |
370 | // Get the processor number for the BSP\r | |
371 | //\r | |
372 | ApicId = GetInitialApicId ();\r | |
373 | for (Index1 = 0; Index1 < CpuMpData->CpuCount; Index1++) {\r | |
31a1e4da | 374 | if (CpuInfoInHob[Index1].ApicId == ApicId) {\r |
8a2d564b JF |
375 | CpuMpData->BspNumber = (UINT32) Index1;\r |
376 | break;\r | |
377 | }\r | |
378 | }\r | |
8a2d564b JF |
379 | }\r |
380 | }\r | |
381 | \r | |
fe627769 JF |
382 | /**\r |
383 | Enable x2APIC mode on APs.\r | |
384 | \r | |
385 | @param[in, out] Buffer Pointer to private data buffer.\r | |
386 | **/\r | |
387 | VOID\r | |
388 | EFIAPI\r | |
389 | ApFuncEnableX2Apic (\r | |
390 | IN OUT VOID *Buffer\r | |
391 | )\r | |
392 | {\r | |
393 | SetApicMode (LOCAL_APIC_MODE_X2APIC);\r | |
394 | }\r | |
395 | \r | |
b8b04307 JF |
396 | /**\r |
397 | Do sync on APs.\r | |
398 | \r | |
399 | @param[in, out] Buffer Pointer to private data buffer.\r | |
400 | **/\r | |
401 | VOID\r | |
402 | EFIAPI\r | |
403 | ApInitializeSync (\r | |
404 | IN OUT VOID *Buffer\r | |
405 | )\r | |
406 | {\r | |
407 | CPU_MP_DATA *CpuMpData;\r | |
408 | \r | |
409 | CpuMpData = (CPU_MP_DATA *) Buffer;\r | |
410 | //\r | |
b8b04307 JF |
411 | // Load microcode on AP\r |
412 | //\r | |
413 | MicrocodeDetect (CpuMpData);\r | |
cb811673 JF |
414 | //\r |
415 | // Sync BSP's MTRR table to AP\r | |
416 | //\r | |
417 | MtrrSetAllMtrrs (&CpuMpData->MtrrTable);\r | |
b8b04307 JF |
418 | }\r |
419 | \r | |
420 | /**\r | |
421 | Find the current Processor number by APIC ID.\r | |
422 | \r | |
367284e7 DB |
423 | @param[in] CpuMpData Pointer to PEI CPU MP Data\r |
424 | @param[out] ProcessorNumber Return the pocessor number found\r | |
b8b04307 JF |
425 | \r |
426 | @retval EFI_SUCCESS ProcessorNumber is found and returned.\r | |
427 | @retval EFI_NOT_FOUND ProcessorNumber is not found.\r | |
428 | **/\r | |
429 | EFI_STATUS\r | |
430 | GetProcessorNumber (\r | |
431 | IN CPU_MP_DATA *CpuMpData,\r | |
432 | OUT UINTN *ProcessorNumber\r | |
433 | )\r | |
434 | {\r | |
435 | UINTN TotalProcessorNumber;\r | |
436 | UINTN Index;\r | |
31a1e4da JF |
437 | CPU_INFO_IN_HOB *CpuInfoInHob;\r |
438 | \r | |
439 | CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;\r | |
b8b04307 JF |
440 | \r |
441 | TotalProcessorNumber = CpuMpData->CpuCount;\r | |
442 | for (Index = 0; Index < TotalProcessorNumber; Index ++) {\r | |
31a1e4da | 443 | if (CpuInfoInHob[Index].ApicId == GetApicId ()) {\r |
b8b04307 JF |
444 | *ProcessorNumber = Index;\r |
445 | return EFI_SUCCESS;\r | |
446 | }\r | |
447 | }\r | |
448 | return EFI_NOT_FOUND;\r | |
449 | }\r | |
450 | \r | |
03434dff JF |
451 | /**\r |
452 | This function will get CPU count in the system.\r | |
453 | \r | |
454 | @param[in] CpuMpData Pointer to PEI CPU MP Data\r | |
455 | \r | |
456 | @return CPU count detected\r | |
457 | **/\r | |
458 | UINTN\r | |
459 | CollectProcessorCount (\r | |
460 | IN CPU_MP_DATA *CpuMpData\r | |
461 | )\r | |
462 | {\r | |
59a119f0 JF |
463 | UINTN Index;\r |
464 | \r | |
03434dff JF |
465 | //\r |
466 | // Send 1st broadcast IPI to APs to wakeup APs\r | |
467 | //\r | |
468 | CpuMpData->InitFlag = ApInitConfig;\r | |
469 | CpuMpData->X2ApicEnable = FALSE;\r | |
470 | WakeUpAP (CpuMpData, TRUE, 0, NULL, NULL);\r | |
03434dff JF |
471 | CpuMpData->InitFlag = ApInitDone;\r |
472 | ASSERT (CpuMpData->CpuCount <= PcdGet32 (PcdCpuMaxLogicalProcessorNumber));\r | |
473 | //\r | |
474 | // Wait for all APs finished the initialization\r | |
475 | //\r | |
476 | while (CpuMpData->FinishedCount < (CpuMpData->CpuCount - 1)) {\r | |
477 | CpuPause ();\r | |
478 | }\r | |
479 | \r | |
71d8226a JF |
480 | if (CpuMpData->CpuCount > 255) {\r |
481 | //\r | |
482 | // If there are more than 255 processor found, force to enable X2APIC\r | |
483 | //\r | |
484 | CpuMpData->X2ApicEnable = TRUE;\r | |
485 | }\r | |
fe627769 JF |
486 | if (CpuMpData->X2ApicEnable) {\r |
487 | DEBUG ((DEBUG_INFO, "Force x2APIC mode!\n"));\r | |
488 | //\r | |
489 | // Wakeup all APs to enable x2APIC mode\r | |
490 | //\r | |
491 | WakeUpAP (CpuMpData, TRUE, 0, ApFuncEnableX2Apic, NULL);\r | |
492 | //\r | |
493 | // Wait for all known APs finished\r | |
494 | //\r | |
495 | while (CpuMpData->FinishedCount < (CpuMpData->CpuCount - 1)) {\r | |
496 | CpuPause ();\r | |
497 | }\r | |
498 | //\r | |
499 | // Enable x2APIC on BSP\r | |
500 | //\r | |
501 | SetApicMode (LOCAL_APIC_MODE_X2APIC);\r | |
59a119f0 JF |
502 | //\r |
503 | // Set BSP/Aps state to IDLE\r | |
504 | //\r | |
505 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r | |
506 | SetApState (&CpuMpData->CpuData[Index], CpuStateIdle);\r | |
507 | }\r | |
fe627769 JF |
508 | }\r |
509 | DEBUG ((DEBUG_INFO, "APIC MODE is %d\n", GetApicMode ()));\r | |
8a2d564b JF |
510 | //\r |
511 | // Sort BSP/Aps by CPU APIC ID in ascending order\r | |
512 | //\r | |
513 | SortApicId (CpuMpData);\r | |
514 | \r | |
03434dff JF |
515 | DEBUG ((DEBUG_INFO, "MpInitLib: Find %d processors in system.\n", CpuMpData->CpuCount));\r |
516 | \r | |
517 | return CpuMpData->CpuCount;\r | |
518 | }\r | |
519 | \r | |
367284e7 | 520 | /**\r |
03a1a925 JF |
521 | Initialize CPU AP Data when AP is wakeup at the first time.\r |
522 | \r | |
523 | @param[in, out] CpuMpData Pointer to PEI CPU MP Data\r | |
524 | @param[in] ProcessorNumber The handle number of processor\r | |
525 | @param[in] BistData Processor BIST data\r | |
367284e7 | 526 | @param[in] ApTopOfStack Top of AP stack\r |
03a1a925 JF |
527 | \r |
528 | **/\r | |
529 | VOID\r | |
530 | InitializeApData (\r | |
531 | IN OUT CPU_MP_DATA *CpuMpData,\r | |
532 | IN UINTN ProcessorNumber,\r | |
845c5be1 | 533 | IN UINT32 BistData,\r |
dd3fa0cd | 534 | IN UINT64 ApTopOfStack\r |
03a1a925 JF |
535 | )\r |
536 | {\r | |
31a1e4da JF |
537 | CPU_INFO_IN_HOB *CpuInfoInHob;\r |
538 | \r | |
539 | CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;\r | |
540 | CpuInfoInHob[ProcessorNumber].InitialApicId = GetInitialApicId ();\r | |
541 | CpuInfoInHob[ProcessorNumber].ApicId = GetApicId ();\r | |
542 | CpuInfoInHob[ProcessorNumber].Health = BistData;\r | |
dd3fa0cd | 543 | CpuInfoInHob[ProcessorNumber].ApTopOfStack = ApTopOfStack;\r |
31a1e4da | 544 | \r |
03a1a925 | 545 | CpuMpData->CpuData[ProcessorNumber].Waiting = FALSE;\r |
03a1a925 | 546 | CpuMpData->CpuData[ProcessorNumber].CpuHealthy = (BistData == 0) ? TRUE : FALSE;\r |
31a1e4da | 547 | if (CpuInfoInHob[ProcessorNumber].InitialApicId >= 0xFF) {\r |
03a1a925 JF |
548 | //\r |
549 | // Set x2APIC mode if there are any logical processor reporting\r | |
550 | // an Initial APIC ID of 255 or greater.\r | |
551 | //\r | |
552 | AcquireSpinLock(&CpuMpData->MpLock);\r | |
553 | CpuMpData->X2ApicEnable = TRUE;\r | |
554 | ReleaseSpinLock(&CpuMpData->MpLock);\r | |
555 | }\r | |
556 | \r | |
557 | InitializeSpinLock(&CpuMpData->CpuData[ProcessorNumber].ApLock);\r | |
558 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateIdle);\r | |
559 | }\r | |
560 | \r | |
b8b04307 JF |
561 | /**\r |
562 | This function will be called from AP reset code if BSP uses WakeUpAP.\r | |
563 | \r | |
564 | @param[in] ExchangeInfo Pointer to the MP exchange info buffer\r | |
9fcea114 | 565 | @param[in] ApIndex Number of current executing AP\r |
b8b04307 JF |
566 | **/\r |
567 | VOID\r | |
568 | EFIAPI\r | |
569 | ApWakeupFunction (\r | |
570 | IN MP_CPU_EXCHANGE_INFO *ExchangeInfo,\r | |
37676b9f | 571 | IN UINTN ApIndex\r |
b8b04307 JF |
572 | )\r |
573 | {\r | |
574 | CPU_MP_DATA *CpuMpData;\r | |
575 | UINTN ProcessorNumber;\r | |
576 | EFI_AP_PROCEDURE Procedure;\r | |
577 | VOID *Parameter;\r | |
578 | UINT32 BistData;\r | |
579 | volatile UINT32 *ApStartupSignalBuffer;\r | |
31a1e4da | 580 | CPU_INFO_IN_HOB *CpuInfoInHob;\r |
dd3fa0cd | 581 | UINT64 ApTopOfStack;\r |
c6b0feb3 | 582 | UINTN CurrentApicMode;\r |
b8b04307 JF |
583 | \r |
584 | //\r | |
585 | // AP finished assembly code and begin to execute C code\r | |
586 | //\r | |
587 | CpuMpData = ExchangeInfo->CpuMpData;\r | |
588 | \r | |
ffab2442 JF |
589 | //\r |
590 | // AP's local APIC settings will be lost after received INIT IPI\r | |
591 | // We need to re-initialize them at here\r | |
592 | //\r | |
593 | ProgramVirtualWireMode ();\r | |
a2ea6894 RN |
594 | //\r |
595 | // Mask the LINT0 and LINT1 so that AP doesn't enter the system timer interrupt handler.\r | |
596 | //\r | |
597 | DisableLvtInterrupts ();\r | |
ffab2442 | 598 | SyncLocalApicTimerSetting (CpuMpData);\r |
b8b04307 | 599 | \r |
c6b0feb3 | 600 | CurrentApicMode = GetApicMode ();\r |
b8b04307 JF |
601 | while (TRUE) {\r |
602 | if (CpuMpData->InitFlag == ApInitConfig) {\r | |
603 | //\r | |
604 | // Add CPU number\r | |
605 | //\r | |
606 | InterlockedIncrement ((UINT32 *) &CpuMpData->CpuCount);\r | |
37676b9f | 607 | ProcessorNumber = ApIndex;\r |
b8b04307 JF |
608 | //\r |
609 | // This is first time AP wakeup, get BIST information from AP stack\r | |
610 | //\r | |
845c5be1 | 611 | ApTopOfStack = CpuMpData->Buffer + (ProcessorNumber + 1) * CpuMpData->CpuApStackSize;\r |
dd3fa0cd | 612 | BistData = *(UINT32 *) ((UINTN) ApTopOfStack - sizeof (UINTN));\r |
b8b04307 JF |
613 | //\r |
614 | // Do some AP initialize sync\r | |
615 | //\r | |
616 | ApInitializeSync (CpuMpData);\r | |
617 | //\r | |
618 | // Sync BSP's Control registers to APs\r | |
619 | //\r | |
620 | RestoreVolatileRegisters (&CpuMpData->CpuData[0].VolatileRegisters, FALSE);\r | |
845c5be1 | 621 | InitializeApData (CpuMpData, ProcessorNumber, BistData, ApTopOfStack);\r |
b8b04307 JF |
622 | ApStartupSignalBuffer = CpuMpData->CpuData[ProcessorNumber].StartupApSignal;\r |
623 | } else {\r | |
624 | //\r | |
625 | // Execute AP function if AP is ready\r | |
626 | //\r | |
627 | GetProcessorNumber (CpuMpData, &ProcessorNumber);\r | |
628 | //\r | |
629 | // Clear AP start-up signal when AP waken up\r | |
630 | //\r | |
631 | ApStartupSignalBuffer = CpuMpData->CpuData[ProcessorNumber].StartupApSignal;\r | |
632 | InterlockedCompareExchange32 (\r | |
633 | (UINT32 *) ApStartupSignalBuffer,\r | |
634 | WAKEUP_AP_SIGNAL,\r | |
635 | 0\r | |
636 | );\r | |
637 | if (CpuMpData->ApLoopMode == ApInHltLoop) {\r | |
638 | //\r | |
639 | // Restore AP's volatile registers saved\r | |
640 | //\r | |
641 | RestoreVolatileRegisters (&CpuMpData->CpuData[ProcessorNumber].VolatileRegisters, TRUE);\r | |
199de896 JW |
642 | } else {\r |
643 | //\r | |
644 | // The CPU driver might not flush TLB for APs on spot after updating\r | |
645 | // page attributes. AP in mwait loop mode needs to take care of it when\r | |
646 | // woken up.\r | |
647 | //\r | |
648 | CpuFlushTlb ();\r | |
b8b04307 JF |
649 | }\r |
650 | \r | |
651 | if (GetApState (&CpuMpData->CpuData[ProcessorNumber]) == CpuStateReady) {\r | |
652 | Procedure = (EFI_AP_PROCEDURE)CpuMpData->CpuData[ProcessorNumber].ApFunction;\r | |
653 | Parameter = (VOID *) CpuMpData->CpuData[ProcessorNumber].ApFunctionArgument;\r | |
654 | if (Procedure != NULL) {\r | |
655 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateBusy);\r | |
656 | //\r | |
43c9fdcc JF |
657 | // Enable source debugging on AP function\r |
658 | // \r | |
659 | EnableDebugAgent ();\r | |
660 | //\r | |
b8b04307 JF |
661 | // Invoke AP function here\r |
662 | //\r | |
663 | Procedure (Parameter);\r | |
31a1e4da | 664 | CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;\r |
41be0da5 JF |
665 | if (CpuMpData->SwitchBspFlag) {\r |
666 | //\r | |
667 | // Re-get the processor number due to BSP/AP maybe exchange in AP function\r | |
668 | //\r | |
669 | GetProcessorNumber (CpuMpData, &ProcessorNumber);\r | |
670 | CpuMpData->CpuData[ProcessorNumber].ApFunction = 0;\r | |
671 | CpuMpData->CpuData[ProcessorNumber].ApFunctionArgument = 0;\r | |
b3775af2 JF |
672 | ApStartupSignalBuffer = CpuMpData->CpuData[ProcessorNumber].StartupApSignal;\r |
673 | CpuInfoInHob[ProcessorNumber].ApTopOfStack = CpuInfoInHob[CpuMpData->NewBspNumber].ApTopOfStack;\r | |
41be0da5 | 674 | } else {\r |
c6b0feb3 JF |
675 | if (CpuInfoInHob[ProcessorNumber].ApicId != GetApicId () ||\r |
676 | CpuInfoInHob[ProcessorNumber].InitialApicId != GetInitialApicId ()) {\r | |
677 | if (CurrentApicMode != GetApicMode ()) {\r | |
678 | //\r | |
679 | // If APIC mode change happened during AP function execution,\r | |
680 | // we do not support APIC ID value changed.\r | |
681 | //\r | |
682 | ASSERT (FALSE);\r | |
683 | CpuDeadLoop ();\r | |
684 | } else {\r | |
685 | //\r | |
686 | // Re-get the CPU APICID and Initial APICID if they are changed\r | |
687 | //\r | |
688 | CpuInfoInHob[ProcessorNumber].ApicId = GetApicId ();\r | |
689 | CpuInfoInHob[ProcessorNumber].InitialApicId = GetInitialApicId ();\r | |
690 | }\r | |
691 | }\r | |
41be0da5 | 692 | }\r |
b8b04307 JF |
693 | }\r |
694 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateFinished);\r | |
695 | }\r | |
696 | }\r | |
697 | \r | |
698 | //\r | |
699 | // AP finished executing C code\r | |
700 | //\r | |
701 | InterlockedIncrement ((UINT32 *) &CpuMpData->FinishedCount);\r | |
0594ec41 | 702 | InterlockedDecrement ((UINT32 *) &CpuMpData->MpCpuExchangeInfo->NumApsExecuting);\r |
b8b04307 JF |
703 | \r |
704 | //\r | |
705 | // Place AP is specified loop mode\r | |
706 | //\r | |
707 | if (CpuMpData->ApLoopMode == ApInHltLoop) {\r | |
708 | //\r | |
709 | // Save AP volatile registers\r | |
710 | //\r | |
711 | SaveVolatileRegisters (&CpuMpData->CpuData[ProcessorNumber].VolatileRegisters);\r | |
712 | //\r | |
713 | // Place AP in HLT-loop\r | |
714 | //\r | |
715 | while (TRUE) {\r | |
716 | DisableInterrupts ();\r | |
717 | CpuSleep ();\r | |
718 | CpuPause ();\r | |
719 | }\r | |
720 | }\r | |
721 | while (TRUE) {\r | |
722 | DisableInterrupts ();\r | |
723 | if (CpuMpData->ApLoopMode == ApInMwaitLoop) {\r | |
724 | //\r | |
725 | // Place AP in MWAIT-loop\r | |
726 | //\r | |
727 | AsmMonitor ((UINTN) ApStartupSignalBuffer, 0, 0);\r | |
728 | if (*ApStartupSignalBuffer != WAKEUP_AP_SIGNAL) {\r | |
729 | //\r | |
730 | // Check AP start-up signal again.\r | |
731 | // If AP start-up signal is not set, place AP into\r | |
732 | // the specified C-state\r | |
733 | //\r | |
734 | AsmMwait (CpuMpData->ApTargetCState << 4, 0);\r | |
735 | }\r | |
736 | } else if (CpuMpData->ApLoopMode == ApInRunLoop) {\r | |
737 | //\r | |
738 | // Place AP in Run-loop\r | |
739 | //\r | |
740 | CpuPause ();\r | |
741 | } else {\r | |
742 | ASSERT (FALSE);\r | |
743 | }\r | |
744 | \r | |
745 | //\r | |
746 | // If AP start-up signal is written, AP is waken up\r | |
747 | // otherwise place AP in loop again\r | |
748 | //\r | |
749 | if (*ApStartupSignalBuffer == WAKEUP_AP_SIGNAL) {\r | |
750 | break;\r | |
751 | }\r | |
752 | }\r | |
753 | }\r | |
754 | }\r | |
755 | \r | |
96f5920d JF |
756 | /**\r |
757 | Wait for AP wakeup and write AP start-up signal till AP is waken up.\r | |
758 | \r | |
759 | @param[in] ApStartupSignalBuffer Pointer to AP wakeup signal\r | |
760 | **/\r | |
761 | VOID\r | |
762 | WaitApWakeup (\r | |
763 | IN volatile UINT32 *ApStartupSignalBuffer\r | |
764 | )\r | |
765 | {\r | |
766 | //\r | |
767 | // If AP is waken up, StartupApSignal should be cleared.\r | |
768 | // Otherwise, write StartupApSignal again till AP waken up.\r | |
769 | //\r | |
770 | while (InterlockedCompareExchange32 (\r | |
771 | (UINT32 *) ApStartupSignalBuffer,\r | |
772 | WAKEUP_AP_SIGNAL,\r | |
773 | WAKEUP_AP_SIGNAL\r | |
774 | ) != 0) {\r | |
775 | CpuPause ();\r | |
776 | }\r | |
777 | }\r | |
778 | \r | |
7c3f2a12 JF |
779 | /**\r |
780 | This function will fill the exchange info structure.\r | |
781 | \r | |
782 | @param[in] CpuMpData Pointer to CPU MP Data\r | |
783 | \r | |
784 | **/\r | |
785 | VOID\r | |
786 | FillExchangeInfoData (\r | |
787 | IN CPU_MP_DATA *CpuMpData\r | |
788 | )\r | |
789 | {\r | |
790 | volatile MP_CPU_EXCHANGE_INFO *ExchangeInfo;\r | |
f32bfe6d JW |
791 | UINTN Size;\r |
792 | IA32_SEGMENT_DESCRIPTOR *Selector;\r | |
7c3f2a12 JF |
793 | \r |
794 | ExchangeInfo = CpuMpData->MpCpuExchangeInfo;\r | |
795 | ExchangeInfo->Lock = 0;\r | |
796 | ExchangeInfo->StackStart = CpuMpData->Buffer;\r | |
797 | ExchangeInfo->StackSize = CpuMpData->CpuApStackSize;\r | |
798 | ExchangeInfo->BufferStart = CpuMpData->WakeupBuffer;\r | |
799 | ExchangeInfo->ModeOffset = CpuMpData->AddressMap.ModeEntryOffset;\r | |
800 | \r | |
801 | ExchangeInfo->CodeSegment = AsmReadCs ();\r | |
802 | ExchangeInfo->DataSegment = AsmReadDs ();\r | |
803 | \r | |
804 | ExchangeInfo->Cr3 = AsmReadCr3 ();\r | |
805 | \r | |
806 | ExchangeInfo->CFunction = (UINTN) ApWakeupFunction;\r | |
37676b9f | 807 | ExchangeInfo->ApIndex = 0;\r |
0594ec41 | 808 | ExchangeInfo->NumApsExecuting = 0;\r |
46d4b885 JF |
809 | ExchangeInfo->InitFlag = (UINTN) CpuMpData->InitFlag;\r |
810 | ExchangeInfo->CpuInfo = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;\r | |
7c3f2a12 JF |
811 | ExchangeInfo->CpuMpData = CpuMpData;\r |
812 | \r | |
813 | ExchangeInfo->EnableExecuteDisable = IsBspExecuteDisableEnabled ();\r | |
814 | \r | |
3b2928b4 MK |
815 | ExchangeInfo->InitializeFloatingPointUnitsAddress = (UINTN)InitializeFloatingPointUnits;\r |
816 | \r | |
7c3f2a12 JF |
817 | //\r |
818 | // Get the BSP's data of GDT and IDT\r | |
819 | //\r | |
820 | AsmReadGdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->GdtrProfile);\r | |
821 | AsmReadIdtr ((IA32_DESCRIPTOR *) &ExchangeInfo->IdtrProfile);\r | |
f32bfe6d JW |
822 | \r |
823 | //\r | |
824 | // Find a 32-bit code segment\r | |
825 | //\r | |
826 | Selector = (IA32_SEGMENT_DESCRIPTOR *)ExchangeInfo->GdtrProfile.Base;\r | |
827 | Size = ExchangeInfo->GdtrProfile.Limit + 1;\r | |
828 | while (Size > 0) {\r | |
829 | if (Selector->Bits.L == 0 && Selector->Bits.Type >= 8) {\r | |
830 | ExchangeInfo->ModeTransitionSegment =\r | |
831 | (UINT16)((UINTN)Selector - ExchangeInfo->GdtrProfile.Base);\r | |
832 | break;\r | |
833 | }\r | |
834 | Selector += 1;\r | |
835 | Size -= sizeof (IA32_SEGMENT_DESCRIPTOR);\r | |
836 | }\r | |
837 | \r | |
838 | //\r | |
839 | // Copy all 32-bit code and 64-bit code into memory with type of\r | |
840 | // EfiBootServicesCode to avoid page fault if NX memory protection is enabled.\r | |
841 | //\r | |
66833b2a | 842 | if (CpuMpData->WakeupBufferHigh != 0) {\r |
f32bfe6d JW |
843 | Size = CpuMpData->AddressMap.RendezvousFunnelSize -\r |
844 | CpuMpData->AddressMap.ModeTransitionOffset;\r | |
845 | CopyMem (\r | |
66833b2a | 846 | (VOID *)CpuMpData->WakeupBufferHigh,\r |
f32bfe6d JW |
847 | CpuMpData->AddressMap.RendezvousFunnelAddress +\r |
848 | CpuMpData->AddressMap.ModeTransitionOffset,\r | |
849 | Size\r | |
850 | );\r | |
851 | \r | |
66833b2a | 852 | ExchangeInfo->ModeTransitionMemory = (UINT32)CpuMpData->WakeupBufferHigh;\r |
f32bfe6d JW |
853 | } else {\r |
854 | ExchangeInfo->ModeTransitionMemory = (UINT32)\r | |
855 | (ExchangeInfo->BufferStart + CpuMpData->AddressMap.ModeTransitionOffset);\r | |
856 | }\r | |
69dfa8d8 JW |
857 | \r |
858 | ExchangeInfo->ModeHighMemory = ExchangeInfo->ModeTransitionMemory +\r | |
859 | (UINT32)ExchangeInfo->ModeOffset -\r | |
860 | (UINT32)CpuMpData->AddressMap.ModeTransitionOffset;\r | |
861 | ExchangeInfo->ModeHighSegment = (UINT16)ExchangeInfo->CodeSegment;\r | |
7c3f2a12 JF |
862 | }\r |
863 | \r | |
6e1987f1 LE |
864 | /**\r |
865 | Helper function that waits until the finished AP count reaches the specified\r | |
866 | limit, or the specified timeout elapses (whichever comes first).\r | |
867 | \r | |
868 | @param[in] CpuMpData Pointer to CPU MP Data.\r | |
869 | @param[in] FinishedApLimit The number of finished APs to wait for.\r | |
870 | @param[in] TimeLimit The number of microseconds to wait for.\r | |
871 | **/\r | |
872 | VOID\r | |
873 | TimedWaitForApFinish (\r | |
874 | IN CPU_MP_DATA *CpuMpData,\r | |
875 | IN UINT32 FinishedApLimit,\r | |
876 | IN UINT32 TimeLimit\r | |
877 | );\r | |
878 | \r | |
a6b3d753 SZ |
879 | /**\r |
880 | Get available system memory below 1MB by specified size.\r | |
881 | \r | |
882 | @param[in] CpuMpData The pointer to CPU MP Data structure.\r | |
883 | **/\r | |
884 | VOID\r | |
885 | BackupAndPrepareWakeupBuffer(\r | |
886 | IN CPU_MP_DATA *CpuMpData\r | |
887 | )\r | |
888 | {\r | |
889 | CopyMem (\r | |
890 | (VOID *) CpuMpData->BackupBuffer,\r | |
891 | (VOID *) CpuMpData->WakeupBuffer,\r | |
892 | CpuMpData->BackupBufferSize\r | |
893 | );\r | |
894 | CopyMem (\r | |
895 | (VOID *) CpuMpData->WakeupBuffer,\r | |
896 | (VOID *) CpuMpData->AddressMap.RendezvousFunnelAddress,\r | |
897 | CpuMpData->AddressMap.RendezvousFunnelSize\r | |
898 | );\r | |
899 | }\r | |
900 | \r | |
901 | /**\r | |
902 | Restore wakeup buffer data.\r | |
903 | \r | |
904 | @param[in] CpuMpData The pointer to CPU MP Data structure.\r | |
905 | **/\r | |
906 | VOID\r | |
907 | RestoreWakeupBuffer(\r | |
908 | IN CPU_MP_DATA *CpuMpData\r | |
909 | )\r | |
910 | {\r | |
911 | CopyMem (\r | |
912 | (VOID *) CpuMpData->WakeupBuffer,\r | |
913 | (VOID *) CpuMpData->BackupBuffer,\r | |
914 | CpuMpData->BackupBufferSize\r | |
915 | );\r | |
916 | }\r | |
917 | \r | |
918 | /**\r | |
919 | Allocate reset vector buffer.\r | |
920 | \r | |
921 | @param[in, out] CpuMpData The pointer to CPU MP Data structure.\r | |
922 | **/\r | |
923 | VOID\r | |
924 | AllocateResetVector (\r | |
925 | IN OUT CPU_MP_DATA *CpuMpData\r | |
926 | )\r | |
927 | {\r | |
928 | UINTN ApResetVectorSize;\r | |
929 | \r | |
930 | if (CpuMpData->WakeupBuffer == (UINTN) -1) {\r | |
931 | ApResetVectorSize = CpuMpData->AddressMap.RendezvousFunnelSize +\r | |
932 | sizeof (MP_CPU_EXCHANGE_INFO);\r | |
933 | \r | |
934 | CpuMpData->WakeupBuffer = GetWakeupBuffer (ApResetVectorSize);\r | |
935 | CpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *) (UINTN)\r | |
936 | (CpuMpData->WakeupBuffer + CpuMpData->AddressMap.RendezvousFunnelSize);\r | |
66833b2a JW |
937 | CpuMpData->WakeupBufferHigh = GetModeTransitionBuffer (\r |
938 | CpuMpData->AddressMap.RendezvousFunnelSize -\r | |
939 | CpuMpData->AddressMap.ModeTransitionOffset\r | |
940 | );\r | |
a6b3d753 SZ |
941 | }\r |
942 | BackupAndPrepareWakeupBuffer (CpuMpData);\r | |
943 | }\r | |
944 | \r | |
945 | /**\r | |
946 | Free AP reset vector buffer.\r | |
947 | \r | |
948 | @param[in] CpuMpData The pointer to CPU MP Data structure.\r | |
949 | **/\r | |
950 | VOID\r | |
951 | FreeResetVector (\r | |
952 | IN CPU_MP_DATA *CpuMpData\r | |
953 | )\r | |
954 | {\r | |
955 | RestoreWakeupBuffer (CpuMpData);\r | |
956 | }\r | |
957 | \r | |
96f5920d JF |
958 | /**\r |
959 | This function will be called by BSP to wakeup AP.\r | |
960 | \r | |
961 | @param[in] CpuMpData Pointer to CPU MP Data\r | |
962 | @param[in] Broadcast TRUE: Send broadcast IPI to all APs\r | |
963 | FALSE: Send IPI to AP by ApicId\r | |
964 | @param[in] ProcessorNumber The handle number of specified processor\r | |
965 | @param[in] Procedure The function to be invoked by AP\r | |
966 | @param[in] ProcedureArgument The argument to be passed into AP function\r | |
967 | **/\r | |
968 | VOID\r | |
969 | WakeUpAP (\r | |
970 | IN CPU_MP_DATA *CpuMpData,\r | |
971 | IN BOOLEAN Broadcast,\r | |
972 | IN UINTN ProcessorNumber,\r | |
973 | IN EFI_AP_PROCEDURE Procedure, OPTIONAL\r | |
974 | IN VOID *ProcedureArgument OPTIONAL\r | |
975 | )\r | |
976 | {\r | |
977 | volatile MP_CPU_EXCHANGE_INFO *ExchangeInfo;\r | |
978 | UINTN Index;\r | |
979 | CPU_AP_DATA *CpuData;\r | |
980 | BOOLEAN ResetVectorRequired;\r | |
31a1e4da | 981 | CPU_INFO_IN_HOB *CpuInfoInHob;\r |
96f5920d JF |
982 | \r |
983 | CpuMpData->FinishedCount = 0;\r | |
984 | ResetVectorRequired = FALSE;\r | |
985 | \r | |
986 | if (CpuMpData->ApLoopMode == ApInHltLoop ||\r | |
987 | CpuMpData->InitFlag != ApInitDone) {\r | |
988 | ResetVectorRequired = TRUE;\r | |
989 | AllocateResetVector (CpuMpData);\r | |
990 | FillExchangeInfoData (CpuMpData);\r | |
ffab2442 | 991 | SaveLocalApicTimerSetting (CpuMpData);\r |
96f5920d JF |
992 | } else if (CpuMpData->ApLoopMode == ApInMwaitLoop) {\r |
993 | //\r | |
994 | // Get AP target C-state each time when waking up AP,\r | |
995 | // for it maybe updated by platform again\r | |
996 | //\r | |
997 | CpuMpData->ApTargetCState = PcdGet8 (PcdCpuApTargetCstate);\r | |
998 | }\r | |
999 | \r | |
1000 | ExchangeInfo = CpuMpData->MpCpuExchangeInfo;\r | |
1001 | \r | |
1002 | if (Broadcast) {\r | |
1003 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r | |
1004 | if (Index != CpuMpData->BspNumber) {\r | |
1005 | CpuData = &CpuMpData->CpuData[Index];\r | |
1006 | CpuData->ApFunction = (UINTN) Procedure;\r | |
1007 | CpuData->ApFunctionArgument = (UINTN) ProcedureArgument;\r | |
1008 | SetApState (CpuData, CpuStateReady);\r | |
1009 | if (CpuMpData->InitFlag != ApInitConfig) {\r | |
1010 | *(UINT32 *) CpuData->StartupApSignal = WAKEUP_AP_SIGNAL;\r | |
1011 | }\r | |
1012 | }\r | |
1013 | }\r | |
1014 | if (ResetVectorRequired) {\r | |
1015 | //\r | |
1016 | // Wakeup all APs\r | |
1017 | //\r | |
1018 | SendInitSipiSipiAllExcludingSelf ((UINT32) ExchangeInfo->BufferStart);\r | |
1019 | }\r | |
c1192210 JF |
1020 | if (CpuMpData->InitFlag == ApInitConfig) {\r |
1021 | //\r | |
86121874 ED |
1022 | // Here support two methods to collect AP count through adjust\r |
1023 | // PcdCpuApInitTimeOutInMicroSeconds values.\r | |
1024 | //\r | |
1025 | // one way is set a value to just let the first AP to start the\r | |
1026 | // initialization, then through the later while loop to wait all Aps\r | |
1027 | // finsh the initialization.\r | |
1028 | // The other way is set a value to let all APs finished the initialzation.\r | |
1029 | // In this case, the later while loop is useless.\r | |
1030 | //\r | |
1031 | TimedWaitForApFinish (\r | |
1032 | CpuMpData,\r | |
1033 | PcdGet32 (PcdCpuMaxLogicalProcessorNumber) - 1,\r | |
1034 | PcdGet32 (PcdCpuApInitTimeOutInMicroSeconds)\r | |
1035 | );\r | |
0594ec41 ED |
1036 | \r |
1037 | while (CpuMpData->MpCpuExchangeInfo->NumApsExecuting != 0) {\r | |
1038 | CpuPause();\r | |
1039 | }\r | |
c1192210 | 1040 | } else {\r |
96f5920d JF |
1041 | //\r |
1042 | // Wait all APs waken up if this is not the 1st broadcast of SIPI\r | |
1043 | //\r | |
1044 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r | |
1045 | CpuData = &CpuMpData->CpuData[Index];\r | |
1046 | if (Index != CpuMpData->BspNumber) {\r | |
1047 | WaitApWakeup (CpuData->StartupApSignal);\r | |
1048 | }\r | |
1049 | }\r | |
1050 | }\r | |
1051 | } else {\r | |
1052 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r | |
1053 | CpuData->ApFunction = (UINTN) Procedure;\r | |
1054 | CpuData->ApFunctionArgument = (UINTN) ProcedureArgument;\r | |
1055 | SetApState (CpuData, CpuStateReady);\r | |
1056 | //\r | |
1057 | // Wakeup specified AP\r | |
1058 | //\r | |
1059 | ASSERT (CpuMpData->InitFlag != ApInitConfig);\r | |
1060 | *(UINT32 *) CpuData->StartupApSignal = WAKEUP_AP_SIGNAL;\r | |
1061 | if (ResetVectorRequired) {\r | |
31a1e4da | 1062 | CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;\r |
96f5920d | 1063 | SendInitSipiSipi (\r |
31a1e4da | 1064 | CpuInfoInHob[ProcessorNumber].ApicId,\r |
96f5920d JF |
1065 | (UINT32) ExchangeInfo->BufferStart\r |
1066 | );\r | |
1067 | }\r | |
1068 | //\r | |
1069 | // Wait specified AP waken up\r | |
1070 | //\r | |
1071 | WaitApWakeup (CpuData->StartupApSignal);\r | |
1072 | }\r | |
1073 | \r | |
1074 | if (ResetVectorRequired) {\r | |
1075 | FreeResetVector (CpuMpData);\r | |
1076 | }\r | |
1077 | }\r | |
1078 | \r | |
08085f08 JF |
1079 | /**\r |
1080 | Calculate timeout value and return the current performance counter value.\r | |
1081 | \r | |
1082 | Calculate the number of performance counter ticks required for a timeout.\r | |
1083 | If TimeoutInMicroseconds is 0, return value is also 0, which is recognized\r | |
1084 | as infinity.\r | |
1085 | \r | |
1086 | @param[in] TimeoutInMicroseconds Timeout value in microseconds.\r | |
1087 | @param[out] CurrentTime Returns the current value of the performance counter.\r | |
1088 | \r | |
1089 | @return Expected time stamp counter for timeout.\r | |
1090 | If TimeoutInMicroseconds is 0, return value is also 0, which is recognized\r | |
1091 | as infinity.\r | |
1092 | \r | |
1093 | **/\r | |
1094 | UINT64\r | |
1095 | CalculateTimeout (\r | |
1096 | IN UINTN TimeoutInMicroseconds,\r | |
1097 | OUT UINT64 *CurrentTime\r | |
1098 | )\r | |
1099 | {\r | |
48cfb7c0 ED |
1100 | UINT64 TimeoutInSeconds;\r |
1101 | UINT64 TimestampCounterFreq;\r | |
1102 | \r | |
08085f08 JF |
1103 | //\r |
1104 | // Read the current value of the performance counter\r | |
1105 | //\r | |
1106 | *CurrentTime = GetPerformanceCounter ();\r | |
1107 | \r | |
1108 | //\r | |
1109 | // If TimeoutInMicroseconds is 0, return value is also 0, which is recognized\r | |
1110 | // as infinity.\r | |
1111 | //\r | |
1112 | if (TimeoutInMicroseconds == 0) {\r | |
1113 | return 0;\r | |
1114 | }\r | |
1115 | \r | |
1116 | //\r | |
1117 | // GetPerformanceCounterProperties () returns the timestamp counter's frequency\r | |
48cfb7c0 ED |
1118 | // in Hz. \r |
1119 | //\r | |
1120 | TimestampCounterFreq = GetPerformanceCounterProperties (NULL, NULL);\r | |
1121 | \r | |
08085f08 | 1122 | //\r |
48cfb7c0 ED |
1123 | // Check the potential overflow before calculate the number of ticks for the timeout value.\r |
1124 | //\r | |
1125 | if (DivU64x64Remainder (MAX_UINT64, TimeoutInMicroseconds, NULL) < TimestampCounterFreq) {\r | |
1126 | //\r | |
1127 | // Convert microseconds into seconds if direct multiplication overflows\r | |
1128 | //\r | |
1129 | TimeoutInSeconds = DivU64x32 (TimeoutInMicroseconds, 1000000);\r | |
1130 | //\r | |
1131 | // Assertion if the final tick count exceeds MAX_UINT64\r | |
1132 | //\r | |
1133 | ASSERT (DivU64x64Remainder (MAX_UINT64, TimeoutInSeconds, NULL) >= TimestampCounterFreq);\r | |
1134 | return MultU64x64 (TimestampCounterFreq, TimeoutInSeconds);\r | |
1135 | } else {\r | |
1136 | //\r | |
1137 | // No overflow case, multiply the return value with TimeoutInMicroseconds and then divide\r | |
1138 | // it by 1,000,000, to get the number of ticks for the timeout value.\r | |
1139 | //\r | |
1140 | return DivU64x32 (\r | |
1141 | MultU64x64 (\r | |
1142 | TimestampCounterFreq,\r | |
1143 | TimeoutInMicroseconds\r | |
1144 | ),\r | |
1145 | 1000000\r | |
1146 | );\r | |
1147 | }\r | |
08085f08 JF |
1148 | }\r |
1149 | \r | |
1150 | /**\r | |
1151 | Checks whether timeout expires.\r | |
1152 | \r | |
1153 | Check whether the number of elapsed performance counter ticks required for\r | |
1154 | a timeout condition has been reached.\r | |
1155 | If Timeout is zero, which means infinity, return value is always FALSE.\r | |
1156 | \r | |
1157 | @param[in, out] PreviousTime On input, the value of the performance counter\r | |
1158 | when it was last read.\r | |
1159 | On output, the current value of the performance\r | |
1160 | counter\r | |
1161 | @param[in] TotalTime The total amount of elapsed time in performance\r | |
1162 | counter ticks.\r | |
1163 | @param[in] Timeout The number of performance counter ticks required\r | |
1164 | to reach a timeout condition.\r | |
1165 | \r | |
1166 | @retval TRUE A timeout condition has been reached.\r | |
1167 | @retval FALSE A timeout condition has not been reached.\r | |
1168 | \r | |
1169 | **/\r | |
1170 | BOOLEAN\r | |
1171 | CheckTimeout (\r | |
1172 | IN OUT UINT64 *PreviousTime,\r | |
1173 | IN UINT64 *TotalTime,\r | |
1174 | IN UINT64 Timeout\r | |
1175 | )\r | |
1176 | {\r | |
1177 | UINT64 Start;\r | |
1178 | UINT64 End;\r | |
1179 | UINT64 CurrentTime;\r | |
1180 | INT64 Delta;\r | |
1181 | INT64 Cycle;\r | |
1182 | \r | |
1183 | if (Timeout == 0) {\r | |
1184 | return FALSE;\r | |
1185 | }\r | |
1186 | GetPerformanceCounterProperties (&Start, &End);\r | |
1187 | Cycle = End - Start;\r | |
1188 | if (Cycle < 0) {\r | |
1189 | Cycle = -Cycle;\r | |
1190 | }\r | |
1191 | Cycle++;\r | |
1192 | CurrentTime = GetPerformanceCounter();\r | |
1193 | Delta = (INT64) (CurrentTime - *PreviousTime);\r | |
1194 | if (Start > End) {\r | |
1195 | Delta = -Delta;\r | |
1196 | }\r | |
1197 | if (Delta < 0) {\r | |
1198 | Delta += Cycle;\r | |
1199 | }\r | |
1200 | *TotalTime += Delta;\r | |
1201 | *PreviousTime = CurrentTime;\r | |
1202 | if (*TotalTime > Timeout) {\r | |
1203 | return TRUE;\r | |
1204 | }\r | |
1205 | return FALSE;\r | |
1206 | }\r | |
1207 | \r | |
6e1987f1 LE |
1208 | /**\r |
1209 | Helper function that waits until the finished AP count reaches the specified\r | |
1210 | limit, or the specified timeout elapses (whichever comes first).\r | |
1211 | \r | |
1212 | @param[in] CpuMpData Pointer to CPU MP Data.\r | |
1213 | @param[in] FinishedApLimit The number of finished APs to wait for.\r | |
1214 | @param[in] TimeLimit The number of microseconds to wait for.\r | |
1215 | **/\r | |
1216 | VOID\r | |
1217 | TimedWaitForApFinish (\r | |
1218 | IN CPU_MP_DATA *CpuMpData,\r | |
1219 | IN UINT32 FinishedApLimit,\r | |
1220 | IN UINT32 TimeLimit\r | |
1221 | )\r | |
1222 | {\r | |
1223 | //\r | |
1224 | // CalculateTimeout() and CheckTimeout() consider a TimeLimit of 0\r | |
1225 | // "infinity", so check for (TimeLimit == 0) explicitly.\r | |
1226 | //\r | |
1227 | if (TimeLimit == 0) {\r | |
1228 | return;\r | |
1229 | }\r | |
1230 | \r | |
1231 | CpuMpData->TotalTime = 0;\r | |
1232 | CpuMpData->ExpectedTime = CalculateTimeout (\r | |
1233 | TimeLimit,\r | |
1234 | &CpuMpData->CurrentTime\r | |
1235 | );\r | |
1236 | while (CpuMpData->FinishedCount < FinishedApLimit &&\r | |
1237 | !CheckTimeout (\r | |
1238 | &CpuMpData->CurrentTime,\r | |
1239 | &CpuMpData->TotalTime,\r | |
1240 | CpuMpData->ExpectedTime\r | |
1241 | )) {\r | |
1242 | CpuPause ();\r | |
1243 | }\r | |
1244 | \r | |
1245 | if (CpuMpData->FinishedCount >= FinishedApLimit) {\r | |
1246 | DEBUG ((\r | |
1247 | DEBUG_VERBOSE,\r | |
1248 | "%a: reached FinishedApLimit=%u in %Lu microseconds\n",\r | |
1249 | __FUNCTION__,\r | |
1250 | FinishedApLimit,\r | |
1251 | DivU64x64Remainder (\r | |
1252 | MultU64x32 (CpuMpData->TotalTime, 1000000),\r | |
1253 | GetPerformanceCounterProperties (NULL, NULL),\r | |
1254 | NULL\r | |
1255 | )\r | |
1256 | ));\r | |
1257 | }\r | |
1258 | }\r | |
1259 | \r | |
08085f08 JF |
1260 | /**\r |
1261 | Reset an AP to Idle state.\r | |
1262 | \r | |
1263 | Any task being executed by the AP will be aborted and the AP\r | |
1264 | will be waiting for a new task in Wait-For-SIPI state.\r | |
1265 | \r | |
1266 | @param[in] ProcessorNumber The handle number of processor.\r | |
1267 | **/\r | |
1268 | VOID\r | |
1269 | ResetProcessorToIdleState (\r | |
1270 | IN UINTN ProcessorNumber\r | |
1271 | )\r | |
1272 | {\r | |
1273 | CPU_MP_DATA *CpuMpData;\r | |
1274 | \r | |
1275 | CpuMpData = GetCpuMpData ();\r | |
1276 | \r | |
cb33bde4 | 1277 | CpuMpData->InitFlag = ApInitReconfig;\r |
08085f08 | 1278 | WakeUpAP (CpuMpData, FALSE, ProcessorNumber, NULL, NULL);\r |
cb33bde4 JF |
1279 | while (CpuMpData->FinishedCount < 1) {\r |
1280 | CpuPause ();\r | |
1281 | }\r | |
1282 | CpuMpData->InitFlag = ApInitDone;\r | |
08085f08 JF |
1283 | \r |
1284 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateIdle);\r | |
1285 | }\r | |
1286 | \r | |
1287 | /**\r | |
1288 | Searches for the next waiting AP.\r | |
1289 | \r | |
1290 | Search for the next AP that is put in waiting state by single-threaded StartupAllAPs().\r | |
1291 | \r | |
1292 | @param[out] NextProcessorNumber Pointer to the processor number of the next waiting AP.\r | |
1293 | \r | |
1294 | @retval EFI_SUCCESS The next waiting AP has been found.\r | |
1295 | @retval EFI_NOT_FOUND No waiting AP exists.\r | |
1296 | \r | |
1297 | **/\r | |
1298 | EFI_STATUS\r | |
1299 | GetNextWaitingProcessorNumber (\r | |
1300 | OUT UINTN *NextProcessorNumber\r | |
1301 | )\r | |
1302 | {\r | |
1303 | UINTN ProcessorNumber;\r | |
1304 | CPU_MP_DATA *CpuMpData;\r | |
1305 | \r | |
1306 | CpuMpData = GetCpuMpData ();\r | |
1307 | \r | |
1308 | for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r | |
1309 | if (CpuMpData->CpuData[ProcessorNumber].Waiting) {\r | |
1310 | *NextProcessorNumber = ProcessorNumber;\r | |
1311 | return EFI_SUCCESS;\r | |
1312 | }\r | |
1313 | }\r | |
1314 | \r | |
1315 | return EFI_NOT_FOUND;\r | |
1316 | }\r | |
1317 | \r | |
1318 | /** Checks status of specified AP.\r | |
1319 | \r | |
1320 | This function checks whether the specified AP has finished the task assigned\r | |
1321 | by StartupThisAP(), and whether timeout expires.\r | |
1322 | \r | |
1323 | @param[in] ProcessorNumber The handle number of processor.\r | |
1324 | \r | |
1325 | @retval EFI_SUCCESS Specified AP has finished task assigned by StartupThisAPs().\r | |
1326 | @retval EFI_TIMEOUT The timeout expires.\r | |
1327 | @retval EFI_NOT_READY Specified AP has not finished task and timeout has not expired.\r | |
1328 | **/\r | |
1329 | EFI_STATUS\r | |
1330 | CheckThisAP (\r | |
1331 | IN UINTN ProcessorNumber\r | |
1332 | )\r | |
1333 | {\r | |
1334 | CPU_MP_DATA *CpuMpData;\r | |
1335 | CPU_AP_DATA *CpuData;\r | |
1336 | \r | |
1337 | CpuMpData = GetCpuMpData ();\r | |
1338 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r | |
1339 | \r | |
1340 | //\r | |
1341 | // Check the CPU state of AP. If it is CpuStateFinished, then the AP has finished its task.\r | |
1342 | // Only BSP and corresponding AP access this unit of CPU Data. This means the AP will not modify the\r | |
1343 | // value of state after setting the it to CpuStateFinished, so BSP can safely make use of its value.\r | |
1344 | //\r | |
1345 | //\r | |
1346 | // If the AP finishes for StartupThisAP(), return EFI_SUCCESS.\r | |
1347 | //\r | |
1348 | if (GetApState(CpuData) == CpuStateFinished) {\r | |
1349 | if (CpuData->Finished != NULL) {\r | |
1350 | *(CpuData->Finished) = TRUE;\r | |
1351 | }\r | |
1352 | SetApState (CpuData, CpuStateIdle);\r | |
1353 | return EFI_SUCCESS;\r | |
1354 | } else {\r | |
1355 | //\r | |
1356 | // If timeout expires for StartupThisAP(), report timeout.\r | |
1357 | //\r | |
1358 | if (CheckTimeout (&CpuData->CurrentTime, &CpuData->TotalTime, CpuData->ExpectedTime)) {\r | |
1359 | if (CpuData->Finished != NULL) {\r | |
1360 | *(CpuData->Finished) = FALSE;\r | |
1361 | }\r | |
1362 | //\r | |
1363 | // Reset failed AP to idle state\r | |
1364 | //\r | |
1365 | ResetProcessorToIdleState (ProcessorNumber);\r | |
1366 | \r | |
1367 | return EFI_TIMEOUT;\r | |
1368 | }\r | |
1369 | }\r | |
1370 | return EFI_NOT_READY;\r | |
1371 | }\r | |
1372 | \r | |
1373 | /**\r | |
1374 | Checks status of all APs.\r | |
1375 | \r | |
1376 | This function checks whether all APs have finished task assigned by StartupAllAPs(),\r | |
1377 | and whether timeout expires.\r | |
1378 | \r | |
1379 | @retval EFI_SUCCESS All APs have finished task assigned by StartupAllAPs().\r | |
1380 | @retval EFI_TIMEOUT The timeout expires.\r | |
1381 | @retval EFI_NOT_READY APs have not finished task and timeout has not expired.\r | |
1382 | **/\r | |
1383 | EFI_STATUS\r | |
1384 | CheckAllAPs (\r | |
1385 | VOID\r | |
1386 | )\r | |
1387 | {\r | |
1388 | UINTN ProcessorNumber;\r | |
1389 | UINTN NextProcessorNumber;\r | |
1390 | UINTN ListIndex;\r | |
1391 | EFI_STATUS Status;\r | |
1392 | CPU_MP_DATA *CpuMpData;\r | |
1393 | CPU_AP_DATA *CpuData;\r | |
1394 | \r | |
1395 | CpuMpData = GetCpuMpData ();\r | |
1396 | \r | |
1397 | NextProcessorNumber = 0;\r | |
1398 | \r | |
1399 | //\r | |
1400 | // Go through all APs that are responsible for the StartupAllAPs().\r | |
1401 | //\r | |
1402 | for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r | |
1403 | if (!CpuMpData->CpuData[ProcessorNumber].Waiting) {\r | |
1404 | continue;\r | |
1405 | }\r | |
1406 | \r | |
1407 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r | |
1408 | //\r | |
1409 | // Check the CPU state of AP. If it is CpuStateFinished, then the AP has finished its task.\r | |
1410 | // Only BSP and corresponding AP access this unit of CPU Data. This means the AP will not modify the\r | |
1411 | // value of state after setting the it to CpuStateFinished, so BSP can safely make use of its value.\r | |
1412 | //\r | |
1413 | if (GetApState(CpuData) == CpuStateFinished) {\r | |
1414 | CpuMpData->RunningCount ++;\r | |
1415 | CpuMpData->CpuData[ProcessorNumber].Waiting = FALSE;\r | |
1416 | SetApState(CpuData, CpuStateIdle);\r | |
1417 | \r | |
1418 | //\r | |
1419 | // If in Single Thread mode, then search for the next waiting AP for execution.\r | |
1420 | //\r | |
1421 | if (CpuMpData->SingleThread) {\r | |
1422 | Status = GetNextWaitingProcessorNumber (&NextProcessorNumber);\r | |
1423 | \r | |
1424 | if (!EFI_ERROR (Status)) {\r | |
1425 | WakeUpAP (\r | |
1426 | CpuMpData,\r | |
1427 | FALSE,\r | |
1428 | (UINT32) NextProcessorNumber,\r | |
1429 | CpuMpData->Procedure,\r | |
1430 | CpuMpData->ProcArguments\r | |
1431 | );\r | |
1432 | }\r | |
1433 | }\r | |
1434 | }\r | |
1435 | }\r | |
1436 | \r | |
1437 | //\r | |
1438 | // If all APs finish, return EFI_SUCCESS.\r | |
1439 | //\r | |
1440 | if (CpuMpData->RunningCount == CpuMpData->StartCount) {\r | |
1441 | return EFI_SUCCESS;\r | |
1442 | }\r | |
1443 | \r | |
1444 | //\r | |
1445 | // If timeout expires, report timeout.\r | |
1446 | //\r | |
1447 | if (CheckTimeout (\r | |
1448 | &CpuMpData->CurrentTime,\r | |
1449 | &CpuMpData->TotalTime,\r | |
1450 | CpuMpData->ExpectedTime)\r | |
1451 | ) {\r | |
1452 | //\r | |
1453 | // If FailedCpuList is not NULL, record all failed APs in it.\r | |
1454 | //\r | |
1455 | if (CpuMpData->FailedCpuList != NULL) {\r | |
1456 | *CpuMpData->FailedCpuList =\r | |
1457 | AllocatePool ((CpuMpData->StartCount - CpuMpData->FinishedCount + 1) * sizeof (UINTN));\r | |
1458 | ASSERT (*CpuMpData->FailedCpuList != NULL);\r | |
1459 | }\r | |
1460 | ListIndex = 0;\r | |
1461 | \r | |
1462 | for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r | |
1463 | //\r | |
1464 | // Check whether this processor is responsible for StartupAllAPs().\r | |
1465 | //\r | |
1466 | if (CpuMpData->CpuData[ProcessorNumber].Waiting) {\r | |
1467 | //\r | |
1468 | // Reset failed APs to idle state\r | |
1469 | //\r | |
1470 | ResetProcessorToIdleState (ProcessorNumber);\r | |
1471 | CpuMpData->CpuData[ProcessorNumber].Waiting = FALSE;\r | |
1472 | if (CpuMpData->FailedCpuList != NULL) {\r | |
1473 | (*CpuMpData->FailedCpuList)[ListIndex++] = ProcessorNumber;\r | |
1474 | }\r | |
1475 | }\r | |
1476 | }\r | |
1477 | if (CpuMpData->FailedCpuList != NULL) {\r | |
1478 | (*CpuMpData->FailedCpuList)[ListIndex] = END_OF_CPU_LIST;\r | |
1479 | }\r | |
1480 | return EFI_TIMEOUT;\r | |
1481 | }\r | |
1482 | return EFI_NOT_READY;\r | |
1483 | }\r | |
1484 | \r | |
3e8ad6bd JF |
1485 | /**\r |
1486 | MP Initialize Library initialization.\r | |
1487 | \r | |
1488 | This service will allocate AP reset vector and wakeup all APs to do APs\r | |
1489 | initialization.\r | |
1490 | \r | |
1491 | This service must be invoked before all other MP Initialize Library\r | |
1492 | service are invoked.\r | |
1493 | \r | |
1494 | @retval EFI_SUCCESS MP initialization succeeds.\r | |
1495 | @retval Others MP initialization fails.\r | |
1496 | \r | |
1497 | **/\r | |
1498 | EFI_STATUS\r | |
1499 | EFIAPI\r | |
1500 | MpInitLibInitialize (\r | |
1501 | VOID\r | |
1502 | )\r | |
1503 | {\r | |
6a2ee2bb JF |
1504 | CPU_MP_DATA *OldCpuMpData;\r |
1505 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
e59f8f6b JF |
1506 | UINT32 MaxLogicalProcessorNumber;\r |
1507 | UINT32 ApStackSize;\r | |
f7f85d83 | 1508 | MP_ASSEMBLY_ADDRESS_MAP AddressMap;\r |
e59f8f6b | 1509 | UINTN BufferSize;\r |
9ebcf0f4 | 1510 | UINT32 MonitorFilterSize;\r |
e59f8f6b JF |
1511 | VOID *MpBuffer;\r |
1512 | UINTN Buffer;\r | |
1513 | CPU_MP_DATA *CpuMpData;\r | |
9ebcf0f4 | 1514 | UINT8 ApLoopMode;\r |
e59f8f6b | 1515 | UINT8 *MonitorBuffer;\r |
03a1a925 | 1516 | UINTN Index;\r |
f7f85d83 | 1517 | UINTN ApResetVectorSize;\r |
e59f8f6b | 1518 | UINTN BackupBufferAddr;\r |
6a2ee2bb JF |
1519 | \r |
1520 | OldCpuMpData = GetCpuMpDataFromGuidedHob ();\r | |
1521 | if (OldCpuMpData == NULL) {\r | |
1522 | MaxLogicalProcessorNumber = PcdGet32(PcdCpuMaxLogicalProcessorNumber);\r | |
1523 | } else {\r | |
1524 | MaxLogicalProcessorNumber = OldCpuMpData->CpuCount;\r | |
1525 | }\r | |
14e8137c | 1526 | ASSERT (MaxLogicalProcessorNumber != 0);\r |
f7f85d83 JF |
1527 | \r |
1528 | AsmGetAddressMap (&AddressMap);\r | |
1529 | ApResetVectorSize = AddressMap.RendezvousFunnelSize + sizeof (MP_CPU_EXCHANGE_INFO);\r | |
e59f8f6b | 1530 | ApStackSize = PcdGet32(PcdCpuApStackSize);\r |
9ebcf0f4 JF |
1531 | ApLoopMode = GetApLoopMode (&MonitorFilterSize);\r |
1532 | \r | |
e59f8f6b JF |
1533 | BufferSize = ApStackSize * MaxLogicalProcessorNumber;\r |
1534 | BufferSize += MonitorFilterSize * MaxLogicalProcessorNumber;\r | |
1535 | BufferSize += sizeof (CPU_MP_DATA);\r | |
1536 | BufferSize += ApResetVectorSize;\r | |
1537 | BufferSize += (sizeof (CPU_AP_DATA) + sizeof (CPU_INFO_IN_HOB))* MaxLogicalProcessorNumber;\r | |
1538 | MpBuffer = AllocatePages (EFI_SIZE_TO_PAGES (BufferSize));\r | |
1539 | ASSERT (MpBuffer != NULL);\r | |
1540 | ZeroMem (MpBuffer, BufferSize);\r | |
1541 | Buffer = (UINTN) MpBuffer;\r | |
1542 | \r | |
1543 | MonitorBuffer = (UINT8 *) (Buffer + ApStackSize * MaxLogicalProcessorNumber);\r | |
1544 | BackupBufferAddr = (UINTN) MonitorBuffer + MonitorFilterSize * MaxLogicalProcessorNumber;\r | |
1545 | CpuMpData = (CPU_MP_DATA *) (BackupBufferAddr + ApResetVectorSize);\r | |
1546 | CpuMpData->Buffer = Buffer;\r | |
1547 | CpuMpData->CpuApStackSize = ApStackSize;\r | |
1548 | CpuMpData->BackupBuffer = BackupBufferAddr;\r | |
1549 | CpuMpData->BackupBufferSize = ApResetVectorSize;\r | |
e59f8f6b JF |
1550 | CpuMpData->WakeupBuffer = (UINTN) -1;\r |
1551 | CpuMpData->CpuCount = 1;\r | |
1552 | CpuMpData->BspNumber = 0;\r | |
1553 | CpuMpData->WaitEvent = NULL;\r | |
41be0da5 | 1554 | CpuMpData->SwitchBspFlag = FALSE;\r |
e59f8f6b JF |
1555 | CpuMpData->CpuData = (CPU_AP_DATA *) (CpuMpData + 1);\r |
1556 | CpuMpData->CpuInfoInHob = (UINT64) (UINTN) (CpuMpData->CpuData + MaxLogicalProcessorNumber);\r | |
1e3f7a37 ED |
1557 | CpuMpData->MicrocodePatchAddress = PcdGet64 (PcdCpuMicrocodePatchAddress);\r |
1558 | CpuMpData->MicrocodePatchRegionSize = PcdGet64 (PcdCpuMicrocodePatchRegionSize);\r | |
e59f8f6b JF |
1559 | InitializeSpinLock(&CpuMpData->MpLock);\r |
1560 | //\r | |
68cb9330 JF |
1561 | // Save BSP's Control registers to APs\r |
1562 | //\r | |
1563 | SaveVolatileRegisters (&CpuMpData->CpuData[0].VolatileRegisters);\r | |
1564 | //\r | |
03a1a925 JF |
1565 | // Set BSP basic information\r |
1566 | //\r | |
f2655dcf | 1567 | InitializeApData (CpuMpData, 0, 0, CpuMpData->Buffer + ApStackSize);\r |
03a1a925 | 1568 | //\r |
e59f8f6b JF |
1569 | // Save assembly code information\r |
1570 | //\r | |
1571 | CopyMem (&CpuMpData->AddressMap, &AddressMap, sizeof (MP_ASSEMBLY_ADDRESS_MAP));\r | |
1572 | //\r | |
1573 | // Finally set AP loop mode\r | |
1574 | //\r | |
1575 | CpuMpData->ApLoopMode = ApLoopMode;\r | |
1576 | DEBUG ((DEBUG_INFO, "AP Loop Mode is %d\n", CpuMpData->ApLoopMode));\r | |
1577 | //\r | |
03a1a925 JF |
1578 | // Set up APs wakeup signal buffer\r |
1579 | //\r | |
1580 | for (Index = 0; Index < MaxLogicalProcessorNumber; Index++) {\r | |
1581 | CpuMpData->CpuData[Index].StartupApSignal =\r | |
1582 | (UINT32 *)(MonitorBuffer + MonitorFilterSize * Index);\r | |
1583 | }\r | |
94f63c76 JF |
1584 | //\r |
1585 | // Load Microcode on BSP\r | |
1586 | //\r | |
1587 | MicrocodeDetect (CpuMpData);\r | |
1588 | //\r | |
e59f8f6b JF |
1589 | // Store BSP's MTRR setting\r |
1590 | //\r | |
1591 | MtrrGetAllMtrrs (&CpuMpData->MtrrTable);\r | |
9d64a9fd JF |
1592 | //\r |
1593 | // Enable the local APIC for Virtual Wire Mode.\r | |
1594 | //\r | |
1595 | ProgramVirtualWireMode ();\r | |
e59f8f6b | 1596 | \r |
6a2ee2bb | 1597 | if (OldCpuMpData == NULL) {\r |
14e8137c JF |
1598 | if (MaxLogicalProcessorNumber > 1) {\r |
1599 | //\r | |
1600 | // Wakeup all APs and calculate the processor count in system\r | |
1601 | //\r | |
1602 | CollectProcessorCount (CpuMpData);\r | |
1603 | }\r | |
6a2ee2bb JF |
1604 | } else {\r |
1605 | //\r | |
1606 | // APs have been wakeup before, just get the CPU Information\r | |
1607 | // from HOB\r | |
1608 | //\r | |
1609 | CpuMpData->CpuCount = OldCpuMpData->CpuCount;\r | |
1610 | CpuMpData->BspNumber = OldCpuMpData->BspNumber;\r | |
1611 | CpuMpData->InitFlag = ApInitReconfig;\r | |
31a1e4da JF |
1612 | CpuMpData->CpuInfoInHob = OldCpuMpData->CpuInfoInHob;\r |
1613 | CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;\r | |
6a2ee2bb JF |
1614 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r |
1615 | InitializeSpinLock(&CpuMpData->CpuData[Index].ApLock);\r | |
71d8226a | 1616 | if (CpuInfoInHob[Index].InitialApicId >= 255 || Index > 254) {\r |
6a2ee2bb JF |
1617 | CpuMpData->X2ApicEnable = TRUE;\r |
1618 | }\r | |
31a1e4da | 1619 | CpuMpData->CpuData[Index].CpuHealthy = (CpuInfoInHob[Index].Health == 0)? TRUE:FALSE;\r |
6a2ee2bb JF |
1620 | CpuMpData->CpuData[Index].ApFunction = 0;\r |
1621 | CopyMem (\r | |
1622 | &CpuMpData->CpuData[Index].VolatileRegisters,\r | |
1623 | &CpuMpData->CpuData[0].VolatileRegisters,\r | |
1624 | sizeof (CPU_VOLATILE_REGISTERS)\r | |
1625 | );\r | |
1626 | }\r | |
14e8137c JF |
1627 | if (MaxLogicalProcessorNumber > 1) {\r |
1628 | //\r | |
1629 | // Wakeup APs to do some AP initialize sync\r | |
1630 | //\r | |
1631 | WakeUpAP (CpuMpData, TRUE, 0, ApInitializeSync, CpuMpData);\r | |
1632 | //\r | |
1633 | // Wait for all APs finished initialization\r | |
1634 | //\r | |
1635 | while (CpuMpData->FinishedCount < (CpuMpData->CpuCount - 1)) {\r | |
1636 | CpuPause ();\r | |
1637 | }\r | |
1638 | CpuMpData->InitFlag = ApInitDone;\r | |
1639 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r | |
1640 | SetApState (&CpuMpData->CpuData[Index], CpuStateIdle);\r | |
1641 | }\r | |
6a2ee2bb JF |
1642 | }\r |
1643 | }\r | |
93ca4c0f JF |
1644 | \r |
1645 | //\r | |
1646 | // Initialize global data for MP support\r | |
1647 | //\r | |
1648 | InitMpGlobalData (CpuMpData);\r | |
1649 | \r | |
f7f85d83 | 1650 | return EFI_SUCCESS;\r |
3e8ad6bd JF |
1651 | }\r |
1652 | \r | |
1653 | /**\r | |
1654 | Gets detailed MP-related information on the requested processor at the\r | |
1655 | instant this call is made. This service may only be called from the BSP.\r | |
1656 | \r | |
1657 | @param[in] ProcessorNumber The handle number of processor.\r | |
1658 | @param[out] ProcessorInfoBuffer A pointer to the buffer where information for\r | |
1659 | the requested processor is deposited.\r | |
1660 | @param[out] HealthData Return processor health data.\r | |
1661 | \r | |
1662 | @retval EFI_SUCCESS Processor information was returned.\r | |
1663 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
1664 | @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.\r | |
1665 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
1666 | ProcessorNumber does not exist in the platform.\r | |
1667 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
1668 | \r | |
1669 | **/\r | |
1670 | EFI_STATUS\r | |
1671 | EFIAPI\r | |
1672 | MpInitLibGetProcessorInfo (\r | |
1673 | IN UINTN ProcessorNumber,\r | |
1674 | OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer,\r | |
1675 | OUT EFI_HEALTH_FLAGS *HealthData OPTIONAL\r | |
1676 | )\r | |
1677 | {\r | |
ad52f25e JF |
1678 | CPU_MP_DATA *CpuMpData;\r |
1679 | UINTN CallerNumber;\r | |
31a1e4da | 1680 | CPU_INFO_IN_HOB *CpuInfoInHob;\r |
ad52f25e JF |
1681 | \r |
1682 | CpuMpData = GetCpuMpData ();\r | |
31a1e4da | 1683 | CpuInfoInHob = (CPU_INFO_IN_HOB *) (UINTN) CpuMpData->CpuInfoInHob;\r |
ad52f25e JF |
1684 | \r |
1685 | //\r | |
1686 | // Check whether caller processor is BSP\r | |
1687 | //\r | |
1688 | MpInitLibWhoAmI (&CallerNumber);\r | |
1689 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
1690 | return EFI_DEVICE_ERROR;\r | |
1691 | }\r | |
1692 | \r | |
1693 | if (ProcessorInfoBuffer == NULL) {\r | |
1694 | return EFI_INVALID_PARAMETER;\r | |
1695 | }\r | |
1696 | \r | |
1697 | if (ProcessorNumber >= CpuMpData->CpuCount) {\r | |
1698 | return EFI_NOT_FOUND;\r | |
1699 | }\r | |
1700 | \r | |
31a1e4da | 1701 | ProcessorInfoBuffer->ProcessorId = (UINT64) CpuInfoInHob[ProcessorNumber].ApicId;\r |
ad52f25e JF |
1702 | ProcessorInfoBuffer->StatusFlag = 0;\r |
1703 | if (ProcessorNumber == CpuMpData->BspNumber) {\r | |
1704 | ProcessorInfoBuffer->StatusFlag |= PROCESSOR_AS_BSP_BIT;\r | |
1705 | }\r | |
1706 | if (CpuMpData->CpuData[ProcessorNumber].CpuHealthy) {\r | |
1707 | ProcessorInfoBuffer->StatusFlag |= PROCESSOR_HEALTH_STATUS_BIT;\r | |
1708 | }\r | |
1709 | if (GetApState (&CpuMpData->CpuData[ProcessorNumber]) == CpuStateDisabled) {\r | |
1710 | ProcessorInfoBuffer->StatusFlag &= ~PROCESSOR_ENABLED_BIT;\r | |
1711 | } else {\r | |
1712 | ProcessorInfoBuffer->StatusFlag |= PROCESSOR_ENABLED_BIT;\r | |
1713 | }\r | |
1714 | \r | |
1715 | //\r | |
1716 | // Get processor location information\r | |
1717 | //\r | |
262128e5 | 1718 | GetProcessorLocationByApicId (\r |
31a1e4da | 1719 | CpuInfoInHob[ProcessorNumber].ApicId,\r |
73152f19 LD |
1720 | &ProcessorInfoBuffer->Location.Package,\r |
1721 | &ProcessorInfoBuffer->Location.Core,\r | |
1722 | &ProcessorInfoBuffer->Location.Thread\r | |
1723 | );\r | |
ad52f25e JF |
1724 | \r |
1725 | if (HealthData != NULL) {\r | |
31a1e4da | 1726 | HealthData->Uint32 = CpuInfoInHob[ProcessorNumber].Health;\r |
ad52f25e JF |
1727 | }\r |
1728 | \r | |
1729 | return EFI_SUCCESS;\r | |
3e8ad6bd | 1730 | }\r |
ad52f25e | 1731 | \r |
41be0da5 JF |
1732 | /**\r |
1733 | Worker function to switch the requested AP to be the BSP from that point onward.\r | |
1734 | \r | |
1735 | @param[in] ProcessorNumber The handle number of AP that is to become the new BSP.\r | |
1736 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r | |
1737 | enabled AP. Otherwise, it will be disabled.\r | |
1738 | \r | |
1739 | @retval EFI_SUCCESS BSP successfully switched.\r | |
1740 | @retval others Failed to switch BSP. \r | |
1741 | \r | |
1742 | **/\r | |
1743 | EFI_STATUS\r | |
1744 | SwitchBSPWorker (\r | |
1745 | IN UINTN ProcessorNumber,\r | |
1746 | IN BOOLEAN EnableOldBSP\r | |
1747 | )\r | |
1748 | {\r | |
1749 | CPU_MP_DATA *CpuMpData;\r | |
1750 | UINTN CallerNumber;\r | |
1751 | CPU_STATE State;\r | |
1752 | MSR_IA32_APIC_BASE_REGISTER ApicBaseMsr;\r | |
a8d75a18 | 1753 | BOOLEAN OldInterruptState;\r |
26b43433 | 1754 | BOOLEAN OldTimerInterruptState;\r |
a8d75a18 | 1755 | \r |
26b43433 JF |
1756 | //\r |
1757 | // Save and Disable Local APIC timer interrupt\r | |
1758 | //\r | |
1759 | OldTimerInterruptState = GetApicTimerInterruptState ();\r | |
1760 | DisableApicTimerInterrupt ();\r | |
a8d75a18 JF |
1761 | //\r |
1762 | // Before send both BSP and AP to a procedure to exchange their roles,\r | |
1763 | // interrupt must be disabled. This is because during the exchange role\r | |
1764 | // process, 2 CPU may use 1 stack. If interrupt happens, the stack will\r | |
1765 | // be corrupted, since interrupt return address will be pushed to stack\r | |
1766 | // by hardware.\r | |
1767 | //\r | |
1768 | OldInterruptState = SaveAndDisableInterrupts ();\r | |
1769 | \r | |
1770 | //\r | |
1771 | // Mask LINT0 & LINT1 for the old BSP\r | |
1772 | //\r | |
1773 | DisableLvtInterrupts ();\r | |
41be0da5 JF |
1774 | \r |
1775 | CpuMpData = GetCpuMpData ();\r | |
1776 | \r | |
1777 | //\r | |
1778 | // Check whether caller processor is BSP\r | |
1779 | //\r | |
1780 | MpInitLibWhoAmI (&CallerNumber);\r | |
1781 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
5e72dacc | 1782 | return EFI_DEVICE_ERROR;\r |
41be0da5 JF |
1783 | }\r |
1784 | \r | |
1785 | if (ProcessorNumber >= CpuMpData->CpuCount) {\r | |
1786 | return EFI_NOT_FOUND;\r | |
1787 | }\r | |
1788 | \r | |
1789 | //\r | |
1790 | // Check whether specified AP is disabled\r | |
1791 | //\r | |
1792 | State = GetApState (&CpuMpData->CpuData[ProcessorNumber]);\r | |
1793 | if (State == CpuStateDisabled) {\r | |
1794 | return EFI_INVALID_PARAMETER;\r | |
1795 | }\r | |
1796 | \r | |
1797 | //\r | |
1798 | // Check whether ProcessorNumber specifies the current BSP\r | |
1799 | //\r | |
1800 | if (ProcessorNumber == CpuMpData->BspNumber) {\r | |
1801 | return EFI_INVALID_PARAMETER;\r | |
1802 | }\r | |
1803 | \r | |
1804 | //\r | |
1805 | // Check whether specified AP is busy\r | |
1806 | //\r | |
1807 | if (State == CpuStateBusy) {\r | |
1808 | return EFI_NOT_READY;\r | |
1809 | }\r | |
1810 | \r | |
1811 | CpuMpData->BSPInfo.State = CPU_SWITCH_STATE_IDLE;\r | |
1812 | CpuMpData->APInfo.State = CPU_SWITCH_STATE_IDLE;\r | |
1813 | CpuMpData->SwitchBspFlag = TRUE;\r | |
b3775af2 | 1814 | CpuMpData->NewBspNumber = ProcessorNumber;\r |
41be0da5 JF |
1815 | \r |
1816 | //\r | |
1817 | // Clear the BSP bit of MSR_IA32_APIC_BASE\r | |
1818 | //\r | |
1819 | ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);\r | |
1820 | ApicBaseMsr.Bits.BSP = 0;\r | |
1821 | AsmWriteMsr64 (MSR_IA32_APIC_BASE, ApicBaseMsr.Uint64);\r | |
1822 | \r | |
1823 | //\r | |
1824 | // Need to wakeUp AP (future BSP).\r | |
1825 | //\r | |
1826 | WakeUpAP (CpuMpData, FALSE, ProcessorNumber, FutureBSPProc, CpuMpData);\r | |
1827 | \r | |
1828 | AsmExchangeRole (&CpuMpData->BSPInfo, &CpuMpData->APInfo);\r | |
1829 | \r | |
1830 | //\r | |
1831 | // Set the BSP bit of MSR_IA32_APIC_BASE on new BSP\r | |
1832 | //\r | |
1833 | ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);\r | |
1834 | ApicBaseMsr.Bits.BSP = 1;\r | |
1835 | AsmWriteMsr64 (MSR_IA32_APIC_BASE, ApicBaseMsr.Uint64);\r | |
9c6961d5 | 1836 | ProgramVirtualWireMode ();\r |
41be0da5 JF |
1837 | \r |
1838 | //\r | |
1839 | // Wait for old BSP finished AP task\r | |
1840 | //\r | |
1841 | while (GetApState (&CpuMpData->CpuData[CallerNumber]) != CpuStateFinished) {\r | |
1842 | CpuPause ();\r | |
1843 | }\r | |
1844 | \r | |
1845 | CpuMpData->SwitchBspFlag = FALSE;\r | |
1846 | //\r | |
1847 | // Set old BSP enable state\r | |
1848 | //\r | |
1849 | if (!EnableOldBSP) {\r | |
1850 | SetApState (&CpuMpData->CpuData[CallerNumber], CpuStateDisabled);\r | |
af8ba51a JF |
1851 | } else {\r |
1852 | SetApState (&CpuMpData->CpuData[CallerNumber], CpuStateIdle);\r | |
41be0da5 JF |
1853 | }\r |
1854 | //\r | |
1855 | // Save new BSP number\r | |
1856 | //\r | |
1857 | CpuMpData->BspNumber = (UINT32) ProcessorNumber;\r | |
1858 | \r | |
a8d75a18 JF |
1859 | //\r |
1860 | // Restore interrupt state.\r | |
1861 | //\r | |
1862 | SetInterruptState (OldInterruptState);\r | |
1863 | \r | |
26b43433 JF |
1864 | if (OldTimerInterruptState) {\r |
1865 | EnableApicTimerInterrupt ();\r | |
1866 | }\r | |
a8d75a18 | 1867 | \r |
41be0da5 JF |
1868 | return EFI_SUCCESS;\r |
1869 | }\r | |
ad52f25e | 1870 | \r |
e37109bc JF |
1871 | /**\r |
1872 | Worker function to let the caller enable or disable an AP from this point onward.\r | |
1873 | This service may only be called from the BSP.\r | |
1874 | \r | |
1875 | @param[in] ProcessorNumber The handle number of AP.\r | |
1876 | @param[in] EnableAP Specifies the new state for the processor for\r | |
1877 | enabled, FALSE for disabled.\r | |
1878 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies\r | |
1879 | the new health status of the AP.\r | |
1880 | \r | |
1881 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
1882 | @retval others Failed to Enable/Disable AP.\r | |
1883 | \r | |
1884 | **/\r | |
1885 | EFI_STATUS\r | |
1886 | EnableDisableApWorker (\r | |
1887 | IN UINTN ProcessorNumber,\r | |
1888 | IN BOOLEAN EnableAP,\r | |
1889 | IN UINT32 *HealthFlag OPTIONAL\r | |
1890 | )\r | |
1891 | {\r | |
1892 | CPU_MP_DATA *CpuMpData;\r | |
1893 | UINTN CallerNumber;\r | |
1894 | \r | |
1895 | CpuMpData = GetCpuMpData ();\r | |
1896 | \r | |
1897 | //\r | |
1898 | // Check whether caller processor is BSP\r | |
1899 | //\r | |
1900 | MpInitLibWhoAmI (&CallerNumber);\r | |
1901 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
1902 | return EFI_DEVICE_ERROR;\r | |
1903 | }\r | |
1904 | \r | |
1905 | if (ProcessorNumber == CpuMpData->BspNumber) {\r | |
1906 | return EFI_INVALID_PARAMETER;\r | |
1907 | }\r | |
1908 | \r | |
1909 | if (ProcessorNumber >= CpuMpData->CpuCount) {\r | |
1910 | return EFI_NOT_FOUND;\r | |
1911 | }\r | |
1912 | \r | |
1913 | if (!EnableAP) {\r | |
1914 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateDisabled);\r | |
1915 | } else {\r | |
d5fdae96 | 1916 | ResetProcessorToIdleState (ProcessorNumber);\r |
e37109bc JF |
1917 | }\r |
1918 | \r | |
1919 | if (HealthFlag != NULL) {\r | |
1920 | CpuMpData->CpuData[ProcessorNumber].CpuHealthy =\r | |
1921 | (BOOLEAN) ((*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT) != 0);\r | |
1922 | }\r | |
1923 | \r | |
1924 | return EFI_SUCCESS;\r | |
1925 | }\r | |
1926 | \r | |
3e8ad6bd JF |
1927 | /**\r |
1928 | This return the handle number for the calling processor. This service may be\r | |
1929 | called from the BSP and APs.\r | |
1930 | \r | |
1931 | @param[out] ProcessorNumber Pointer to the handle number of AP.\r | |
1932 | The range is from 0 to the total number of\r | |
1933 | logical processors minus 1. The total number of\r | |
1934 | logical processors can be retrieved by\r | |
1935 | MpInitLibGetNumberOfProcessors().\r | |
1936 | \r | |
1937 | @retval EFI_SUCCESS The current processor handle number was returned\r | |
1938 | in ProcessorNumber.\r | |
1939 | @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.\r | |
1940 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
1941 | \r | |
1942 | **/\r | |
1943 | EFI_STATUS\r | |
1944 | EFIAPI\r | |
1945 | MpInitLibWhoAmI (\r | |
1946 | OUT UINTN *ProcessorNumber\r | |
1947 | )\r | |
1948 | {\r | |
5c9e0997 JF |
1949 | CPU_MP_DATA *CpuMpData;\r |
1950 | \r | |
1951 | if (ProcessorNumber == NULL) {\r | |
1952 | return EFI_INVALID_PARAMETER;\r | |
1953 | }\r | |
1954 | \r | |
1955 | CpuMpData = GetCpuMpData ();\r | |
1956 | \r | |
1957 | return GetProcessorNumber (CpuMpData, ProcessorNumber);\r | |
3e8ad6bd | 1958 | }\r |
809213a6 | 1959 | \r |
3e8ad6bd JF |
1960 | /**\r |
1961 | Retrieves the number of logical processor in the platform and the number of\r | |
1962 | those logical processors that are enabled on this boot. This service may only\r | |
1963 | be called from the BSP.\r | |
1964 | \r | |
1965 | @param[out] NumberOfProcessors Pointer to the total number of logical\r | |
1966 | processors in the system, including the BSP\r | |
1967 | and disabled APs.\r | |
1968 | @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical\r | |
1969 | processors that exist in system, including\r | |
1970 | the BSP.\r | |
1971 | \r | |
1972 | @retval EFI_SUCCESS The number of logical processors and enabled\r | |
1973 | logical processors was retrieved.\r | |
1974 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
1975 | @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL and NumberOfEnabledProcessors\r | |
1976 | is NULL.\r | |
1977 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
1978 | \r | |
1979 | **/\r | |
1980 | EFI_STATUS\r | |
1981 | EFIAPI\r | |
1982 | MpInitLibGetNumberOfProcessors (\r | |
1983 | OUT UINTN *NumberOfProcessors, OPTIONAL\r | |
1984 | OUT UINTN *NumberOfEnabledProcessors OPTIONAL\r | |
1985 | )\r | |
1986 | {\r | |
809213a6 JF |
1987 | CPU_MP_DATA *CpuMpData;\r |
1988 | UINTN CallerNumber;\r | |
1989 | UINTN ProcessorNumber;\r | |
1990 | UINTN EnabledProcessorNumber;\r | |
1991 | UINTN Index;\r | |
1992 | \r | |
1993 | CpuMpData = GetCpuMpData ();\r | |
1994 | \r | |
1995 | if ((NumberOfProcessors == NULL) && (NumberOfEnabledProcessors == NULL)) {\r | |
1996 | return EFI_INVALID_PARAMETER;\r | |
1997 | }\r | |
1998 | \r | |
1999 | //\r | |
2000 | // Check whether caller processor is BSP\r | |
2001 | //\r | |
2002 | MpInitLibWhoAmI (&CallerNumber);\r | |
2003 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
2004 | return EFI_DEVICE_ERROR;\r | |
2005 | }\r | |
2006 | \r | |
2007 | ProcessorNumber = CpuMpData->CpuCount;\r | |
2008 | EnabledProcessorNumber = 0;\r | |
2009 | for (Index = 0; Index < ProcessorNumber; Index++) {\r | |
2010 | if (GetApState (&CpuMpData->CpuData[Index]) != CpuStateDisabled) {\r | |
2011 | EnabledProcessorNumber ++;\r | |
2012 | }\r | |
2013 | }\r | |
2014 | \r | |
2015 | if (NumberOfProcessors != NULL) {\r | |
2016 | *NumberOfProcessors = ProcessorNumber;\r | |
2017 | }\r | |
2018 | if (NumberOfEnabledProcessors != NULL) {\r | |
2019 | *NumberOfEnabledProcessors = EnabledProcessorNumber;\r | |
2020 | }\r | |
2021 | \r | |
2022 | return EFI_SUCCESS;\r | |
3e8ad6bd | 2023 | }\r |
6a2ee2bb | 2024 | \r |
809213a6 | 2025 | \r |
86efe976 JF |
2026 | /**\r |
2027 | Worker function to execute a caller provided function on all enabled APs.\r | |
2028 | \r | |
2029 | @param[in] Procedure A pointer to the function to be run on\r | |
2030 | enabled APs of the system.\r | |
2031 | @param[in] SingleThread If TRUE, then all the enabled APs execute\r | |
2032 | the function specified by Procedure one by\r | |
2033 | one, in ascending order of processor handle\r | |
2034 | number. If FALSE, then all the enabled APs\r | |
2035 | execute the function specified by Procedure\r | |
2036 | simultaneously.\r | |
2037 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
2038 | service.\r | |
367284e7 | 2039 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
86efe976 JF |
2040 | APs to return from Procedure, either for\r |
2041 | blocking or non-blocking mode.\r | |
2042 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
2043 | all APs.\r | |
2044 | @param[out] FailedCpuList If all APs finish successfully, then its\r | |
2045 | content is set to NULL. If not all APs\r | |
2046 | finish before timeout expires, then its\r | |
2047 | content is set to address of the buffer\r | |
2048 | holding handle numbers of the failed APs.\r | |
2049 | \r | |
2050 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r | |
2051 | the timeout expired.\r | |
2052 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r | |
2053 | to all enabled APs.\r | |
2054 | @retval others Failed to Startup all APs.\r | |
2055 | \r | |
2056 | **/\r | |
2057 | EFI_STATUS\r | |
2058 | StartupAllAPsWorker (\r | |
2059 | IN EFI_AP_PROCEDURE Procedure,\r | |
2060 | IN BOOLEAN SingleThread,\r | |
2061 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
2062 | IN UINTN TimeoutInMicroseconds,\r | |
2063 | IN VOID *ProcedureArgument OPTIONAL,\r | |
2064 | OUT UINTN **FailedCpuList OPTIONAL\r | |
2065 | )\r | |
2066 | {\r | |
2067 | EFI_STATUS Status;\r | |
2068 | CPU_MP_DATA *CpuMpData;\r | |
2069 | UINTN ProcessorCount;\r | |
2070 | UINTN ProcessorNumber;\r | |
2071 | UINTN CallerNumber;\r | |
2072 | CPU_AP_DATA *CpuData;\r | |
2073 | BOOLEAN HasEnabledAp;\r | |
2074 | CPU_STATE ApState;\r | |
2075 | \r | |
2076 | CpuMpData = GetCpuMpData ();\r | |
2077 | \r | |
2078 | if (FailedCpuList != NULL) {\r | |
2079 | *FailedCpuList = NULL;\r | |
2080 | }\r | |
2081 | \r | |
2082 | if (CpuMpData->CpuCount == 1) {\r | |
2083 | return EFI_NOT_STARTED;\r | |
2084 | }\r | |
2085 | \r | |
2086 | if (Procedure == NULL) {\r | |
2087 | return EFI_INVALID_PARAMETER;\r | |
2088 | }\r | |
2089 | \r | |
2090 | //\r | |
2091 | // Check whether caller processor is BSP\r | |
2092 | //\r | |
2093 | MpInitLibWhoAmI (&CallerNumber);\r | |
2094 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
2095 | return EFI_DEVICE_ERROR;\r | |
2096 | }\r | |
2097 | \r | |
2098 | //\r | |
2099 | // Update AP state\r | |
2100 | //\r | |
2101 | CheckAndUpdateApsStatus ();\r | |
2102 | \r | |
2103 | ProcessorCount = CpuMpData->CpuCount;\r | |
2104 | HasEnabledAp = FALSE;\r | |
2105 | //\r | |
2106 | // Check whether all enabled APs are idle.\r | |
2107 | // If any enabled AP is not idle, return EFI_NOT_READY.\r | |
2108 | //\r | |
2109 | for (ProcessorNumber = 0; ProcessorNumber < ProcessorCount; ProcessorNumber++) {\r | |
2110 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r | |
2111 | if (ProcessorNumber != CpuMpData->BspNumber) {\r | |
2112 | ApState = GetApState (CpuData);\r | |
2113 | if (ApState != CpuStateDisabled) {\r | |
2114 | HasEnabledAp = TRUE;\r | |
2115 | if (ApState != CpuStateIdle) {\r | |
2116 | //\r | |
2117 | // If any enabled APs are busy, return EFI_NOT_READY.\r | |
2118 | //\r | |
2119 | return EFI_NOT_READY;\r | |
2120 | }\r | |
2121 | }\r | |
2122 | }\r | |
2123 | }\r | |
2124 | \r | |
2125 | if (!HasEnabledAp) {\r | |
2126 | //\r | |
2127 | // If no enabled AP exists, return EFI_NOT_STARTED.\r | |
2128 | //\r | |
2129 | return EFI_NOT_STARTED;\r | |
2130 | }\r | |
2131 | \r | |
2132 | CpuMpData->StartCount = 0;\r | |
2133 | for (ProcessorNumber = 0; ProcessorNumber < ProcessorCount; ProcessorNumber++) {\r | |
2134 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r | |
2135 | CpuData->Waiting = FALSE;\r | |
2136 | if (ProcessorNumber != CpuMpData->BspNumber) {\r | |
2137 | if (CpuData->State == CpuStateIdle) {\r | |
2138 | //\r | |
2139 | // Mark this processor as responsible for current calling.\r | |
2140 | //\r | |
2141 | CpuData->Waiting = TRUE;\r | |
2142 | CpuMpData->StartCount++;\r | |
2143 | }\r | |
2144 | }\r | |
2145 | }\r | |
2146 | \r | |
2147 | CpuMpData->Procedure = Procedure;\r | |
2148 | CpuMpData->ProcArguments = ProcedureArgument;\r | |
2149 | CpuMpData->SingleThread = SingleThread;\r | |
2150 | CpuMpData->FinishedCount = 0;\r | |
2151 | CpuMpData->RunningCount = 0;\r | |
2152 | CpuMpData->FailedCpuList = FailedCpuList;\r | |
2153 | CpuMpData->ExpectedTime = CalculateTimeout (\r | |
2154 | TimeoutInMicroseconds,\r | |
2155 | &CpuMpData->CurrentTime\r | |
2156 | );\r | |
2157 | CpuMpData->TotalTime = 0;\r | |
2158 | CpuMpData->WaitEvent = WaitEvent;\r | |
2159 | \r | |
2160 | if (!SingleThread) {\r | |
2161 | WakeUpAP (CpuMpData, TRUE, 0, Procedure, ProcedureArgument);\r | |
2162 | } else {\r | |
2163 | for (ProcessorNumber = 0; ProcessorNumber < ProcessorCount; ProcessorNumber++) {\r | |
2164 | if (ProcessorNumber == CallerNumber) {\r | |
2165 | continue;\r | |
2166 | }\r | |
2167 | if (CpuMpData->CpuData[ProcessorNumber].Waiting) {\r | |
2168 | WakeUpAP (CpuMpData, FALSE, ProcessorNumber, Procedure, ProcedureArgument);\r | |
2169 | break;\r | |
2170 | }\r | |
2171 | }\r | |
2172 | }\r | |
2173 | \r | |
2174 | Status = EFI_SUCCESS;\r | |
2175 | if (WaitEvent == NULL) {\r | |
2176 | do {\r | |
2177 | Status = CheckAllAPs ();\r | |
2178 | } while (Status == EFI_NOT_READY);\r | |
2179 | }\r | |
2180 | \r | |
2181 | return Status;\r | |
2182 | }\r | |
2183 | \r | |
20ae5774 JF |
2184 | /**\r |
2185 | Worker function to let the caller get one enabled AP to execute a caller-provided\r | |
2186 | function.\r | |
2187 | \r | |
2188 | @param[in] Procedure A pointer to the function to be run on\r | |
2189 | enabled APs of the system.\r | |
2190 | @param[in] ProcessorNumber The handle number of the AP.\r | |
2191 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
2192 | service.\r | |
367284e7 | 2193 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
20ae5774 JF |
2194 | APs to return from Procedure, either for\r |
2195 | blocking or non-blocking mode.\r | |
2196 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
2197 | all APs.\r | |
2198 | @param[out] Finished If AP returns from Procedure before the\r | |
2199 | timeout expires, its content is set to TRUE.\r | |
2200 | Otherwise, the value is set to FALSE.\r | |
2201 | \r | |
2202 | @retval EFI_SUCCESS In blocking mode, specified AP finished before\r | |
2203 | the timeout expires.\r | |
2204 | @retval others Failed to Startup AP.\r | |
2205 | \r | |
2206 | **/\r | |
2207 | EFI_STATUS\r | |
2208 | StartupThisAPWorker (\r | |
2209 | IN EFI_AP_PROCEDURE Procedure,\r | |
2210 | IN UINTN ProcessorNumber,\r | |
2211 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
2212 | IN UINTN TimeoutInMicroseconds,\r | |
2213 | IN VOID *ProcedureArgument OPTIONAL,\r | |
2214 | OUT BOOLEAN *Finished OPTIONAL\r | |
2215 | )\r | |
2216 | {\r | |
2217 | EFI_STATUS Status;\r | |
2218 | CPU_MP_DATA *CpuMpData;\r | |
2219 | CPU_AP_DATA *CpuData;\r | |
2220 | UINTN CallerNumber;\r | |
2221 | \r | |
2222 | CpuMpData = GetCpuMpData ();\r | |
2223 | \r | |
2224 | if (Finished != NULL) {\r | |
2225 | *Finished = FALSE;\r | |
2226 | }\r | |
2227 | \r | |
2228 | //\r | |
2229 | // Check whether caller processor is BSP\r | |
2230 | //\r | |
2231 | MpInitLibWhoAmI (&CallerNumber);\r | |
2232 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
2233 | return EFI_DEVICE_ERROR;\r | |
2234 | }\r | |
2235 | \r | |
2236 | //\r | |
2237 | // Check whether processor with the handle specified by ProcessorNumber exists\r | |
2238 | //\r | |
2239 | if (ProcessorNumber >= CpuMpData->CpuCount) {\r | |
2240 | return EFI_NOT_FOUND;\r | |
2241 | }\r | |
2242 | \r | |
2243 | //\r | |
2244 | // Check whether specified processor is BSP\r | |
2245 | //\r | |
2246 | if (ProcessorNumber == CpuMpData->BspNumber) {\r | |
2247 | return EFI_INVALID_PARAMETER;\r | |
2248 | }\r | |
2249 | \r | |
2250 | //\r | |
2251 | // Check parameter Procedure\r | |
2252 | //\r | |
2253 | if (Procedure == NULL) {\r | |
2254 | return EFI_INVALID_PARAMETER;\r | |
2255 | }\r | |
2256 | \r | |
2257 | //\r | |
2258 | // Update AP state\r | |
2259 | //\r | |
2260 | CheckAndUpdateApsStatus ();\r | |
2261 | \r | |
2262 | //\r | |
2263 | // Check whether specified AP is disabled\r | |
2264 | //\r | |
2265 | if (GetApState (&CpuMpData->CpuData[ProcessorNumber]) == CpuStateDisabled) {\r | |
2266 | return EFI_INVALID_PARAMETER;\r | |
2267 | }\r | |
2268 | \r | |
2269 | //\r | |
2270 | // If WaitEvent is not NULL, execute in non-blocking mode.\r | |
2271 | // BSP saves data for CheckAPsStatus(), and returns EFI_SUCCESS.\r | |
2272 | // CheckAPsStatus() will check completion and timeout periodically.\r | |
2273 | //\r | |
2274 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r | |
2275 | CpuData->WaitEvent = WaitEvent;\r | |
2276 | CpuData->Finished = Finished;\r | |
2277 | CpuData->ExpectedTime = CalculateTimeout (TimeoutInMicroseconds, &CpuData->CurrentTime);\r | |
2278 | CpuData->TotalTime = 0;\r | |
2279 | \r | |
2280 | WakeUpAP (CpuMpData, FALSE, ProcessorNumber, Procedure, ProcedureArgument);\r | |
2281 | \r | |
2282 | //\r | |
2283 | // If WaitEvent is NULL, execute in blocking mode.\r | |
2284 | // BSP checks AP's state until it finishes or TimeoutInMicrosecsond expires.\r | |
2285 | //\r | |
2286 | Status = EFI_SUCCESS;\r | |
2287 | if (WaitEvent == NULL) {\r | |
2288 | do {\r | |
2289 | Status = CheckThisAP (ProcessorNumber);\r | |
2290 | } while (Status == EFI_NOT_READY);\r | |
2291 | }\r | |
2292 | \r | |
2293 | return Status;\r | |
2294 | }\r | |
2295 | \r | |
93ca4c0f JF |
2296 | /**\r |
2297 | Get pointer to CPU MP Data structure from GUIDed HOB.\r | |
2298 | \r | |
2299 | @return The pointer to CPU MP Data structure.\r | |
2300 | **/\r | |
2301 | CPU_MP_DATA *\r | |
2302 | GetCpuMpDataFromGuidedHob (\r | |
2303 | VOID\r | |
2304 | )\r | |
2305 | {\r | |
2306 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
2307 | VOID *DataInHob;\r | |
2308 | CPU_MP_DATA *CpuMpData;\r | |
2309 | \r | |
2310 | CpuMpData = NULL;\r | |
2311 | GuidHob = GetFirstGuidHob (&mCpuInitMpLibHobGuid);\r | |
2312 | if (GuidHob != NULL) {\r | |
2313 | DataInHob = GET_GUID_HOB_DATA (GuidHob);\r | |
2314 | CpuMpData = (CPU_MP_DATA *) (*(UINTN *) DataInHob);\r | |
2315 | }\r | |
2316 | return CpuMpData;\r | |
2317 | }\r | |
42c37b3b | 2318 | \r |