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