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3e8ad6bd JF |
1 | /** @file\r |
2 | CPU MP Initialize Library common functions.\r | |
3 | \r | |
c6be6dab | 4 | Copyright (c) 2016 - 2021, Intel Corporation. All rights reserved.<BR>\r |
4c0f6e34 LD |
5 | Copyright (c) 2020, AMD Inc. All rights reserved.<BR>\r |
6 | \r | |
0acd8697 | 7 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
3e8ad6bd JF |
8 | \r |
9 | **/\r | |
10 | \r | |
11 | #include "MpLib.h"\r | |
7b7508ad TL |
12 | #include <Library/VmgExitLib.h>\r |
13 | #include <Register/Amd/Fam17Msr.h>\r | |
14 | #include <Register/Amd/Ghcb.h>\r | |
3e8ad6bd | 15 | \r |
053e878b | 16 | EFI_GUID mCpuInitMpLibHobGuid = CPU_INIT_MP_LIB_HOB_GUID;\r |
4c0f6e34 | 17 | \r |
7c3f2a12 JF |
18 | /**\r |
19 | The function will check if BSP Execute Disable is enabled.\r | |
844b2d07 JF |
20 | \r |
21 | DxeIpl may have enabled Execute Disable for BSP, APs need to\r | |
22 | get the status and sync up the settings.\r | |
23 | If BSP's CR0.Paging is not set, BSP execute Disble feature is\r | |
24 | not working actually.\r | |
7c3f2a12 JF |
25 | \r |
26 | @retval TRUE BSP Execute Disable is enabled.\r | |
27 | @retval FALSE BSP Execute Disable is not enabled.\r | |
28 | **/\r | |
29 | BOOLEAN\r | |
30 | IsBspExecuteDisableEnabled (\r | |
31 | VOID\r | |
32 | )\r | |
33 | {\r | |
34 | UINT32 Eax;\r | |
35 | CPUID_EXTENDED_CPU_SIG_EDX Edx;\r | |
36 | MSR_IA32_EFER_REGISTER EferMsr;\r | |
37 | BOOLEAN Enabled;\r | |
844b2d07 | 38 | IA32_CR0 Cr0;\r |
7c3f2a12 | 39 | \r |
053e878b | 40 | Enabled = FALSE;\r |
844b2d07 JF |
41 | Cr0.UintN = AsmReadCr0 ();\r |
42 | if (Cr0.Bits.PG != 0) {\r | |
7c3f2a12 | 43 | //\r |
844b2d07 | 44 | // If CR0 Paging bit is set\r |
7c3f2a12 | 45 | //\r |
844b2d07 JF |
46 | AsmCpuid (CPUID_EXTENDED_FUNCTION, &Eax, NULL, NULL, NULL);\r |
47 | if (Eax >= CPUID_EXTENDED_CPU_SIG) {\r | |
48 | AsmCpuid (CPUID_EXTENDED_CPU_SIG, NULL, NULL, NULL, &Edx.Uint32);\r | |
7c3f2a12 | 49 | //\r |
844b2d07 JF |
50 | // CPUID 0x80000001\r |
51 | // Bit 20: Execute Disable Bit available.\r | |
7c3f2a12 | 52 | //\r |
844b2d07 JF |
53 | if (Edx.Bits.NX != 0) {\r |
54 | EferMsr.Uint64 = AsmReadMsr64 (MSR_IA32_EFER);\r | |
55 | //\r | |
56 | // MSR 0xC0000080\r | |
57 | // Bit 11: Execute Disable Bit enable.\r | |
58 | //\r | |
59 | if (EferMsr.Bits.NXE != 0) {\r | |
60 | Enabled = TRUE;\r | |
61 | }\r | |
7c3f2a12 JF |
62 | }\r |
63 | }\r | |
64 | }\r | |
65 | \r | |
66 | return Enabled;\r | |
67 | }\r | |
68 | \r | |
41be0da5 JF |
69 | /**\r |
70 | Worker function for SwitchBSP().\r | |
71 | \r | |
72 | Worker function for SwitchBSP(), assigned to the AP which is intended\r | |
73 | to become BSP.\r | |
74 | \r | |
75 | @param[in] Buffer Pointer to CPU MP Data\r | |
76 | **/\r | |
77 | VOID\r | |
78 | EFIAPI\r | |
79 | FutureBSPProc (\r | |
053e878b | 80 | IN VOID *Buffer\r |
41be0da5 JF |
81 | )\r |
82 | {\r | |
053e878b | 83 | CPU_MP_DATA *DataInHob;\r |
41be0da5 | 84 | \r |
053e878b | 85 | DataInHob = (CPU_MP_DATA *)Buffer;\r |
41be0da5 JF |
86 | AsmExchangeRole (&DataInHob->APInfo, &DataInHob->BSPInfo);\r |
87 | }\r | |
88 | \r | |
03a1a925 JF |
89 | /**\r |
90 | Get the Application Processors state.\r | |
91 | \r | |
92 | @param[in] CpuData The pointer to CPU_AP_DATA of specified AP\r | |
93 | \r | |
94 | @return The AP status\r | |
95 | **/\r | |
96 | CPU_STATE\r | |
97 | GetApState (\r | |
053e878b | 98 | IN CPU_AP_DATA *CpuData\r |
03a1a925 JF |
99 | )\r |
100 | {\r | |
101 | return CpuData->State;\r | |
102 | }\r | |
103 | \r | |
104 | /**\r | |
105 | Set the Application Processors state.\r | |
106 | \r | |
107 | @param[in] CpuData The pointer to CPU_AP_DATA of specified AP\r | |
108 | @param[in] State The AP status\r | |
109 | **/\r | |
110 | VOID\r | |
111 | SetApState (\r | |
053e878b MK |
112 | IN CPU_AP_DATA *CpuData,\r |
113 | IN CPU_STATE State\r | |
03a1a925 JF |
114 | )\r |
115 | {\r | |
116 | AcquireSpinLock (&CpuData->ApLock);\r | |
117 | CpuData->State = State;\r | |
118 | ReleaseSpinLock (&CpuData->ApLock);\r | |
119 | }\r | |
3e8ad6bd | 120 | \r |
ffab2442 | 121 | /**\r |
f70174d6 | 122 | Save BSP's local APIC timer setting.\r |
ffab2442 JF |
123 | \r |
124 | @param[in] CpuMpData Pointer to CPU MP Data\r | |
125 | **/\r | |
126 | VOID\r | |
127 | SaveLocalApicTimerSetting (\r | |
053e878b | 128 | IN CPU_MP_DATA *CpuMpData\r |
ffab2442 JF |
129 | )\r |
130 | {\r | |
131 | //\r | |
132 | // Record the current local APIC timer setting of BSP\r | |
133 | //\r | |
134 | GetApicTimerState (\r | |
135 | &CpuMpData->DivideValue,\r | |
136 | &CpuMpData->PeriodicMode,\r | |
137 | &CpuMpData->Vector\r | |
138 | );\r | |
139 | CpuMpData->CurrentTimerCount = GetApicTimerCurrentCount ();\r | |
140 | CpuMpData->TimerInterruptState = GetApicTimerInterruptState ();\r | |
141 | }\r | |
142 | \r | |
143 | /**\r | |
144 | Sync local APIC timer setting from BSP to AP.\r | |
145 | \r | |
146 | @param[in] CpuMpData Pointer to CPU MP Data\r | |
147 | **/\r | |
148 | VOID\r | |
149 | SyncLocalApicTimerSetting (\r | |
053e878b | 150 | IN CPU_MP_DATA *CpuMpData\r |
ffab2442 JF |
151 | )\r |
152 | {\r | |
153 | //\r | |
154 | // Sync local APIC timer setting from BSP to AP\r | |
155 | //\r | |
156 | InitializeApicTimer (\r | |
157 | CpuMpData->DivideValue,\r | |
158 | CpuMpData->CurrentTimerCount,\r | |
159 | CpuMpData->PeriodicMode,\r | |
160 | CpuMpData->Vector\r | |
161 | );\r | |
162 | //\r | |
163 | // Disable AP's local APIC timer interrupt\r | |
164 | //\r | |
165 | DisableApicTimerInterrupt ();\r | |
166 | }\r | |
167 | \r | |
68cb9330 JF |
168 | /**\r |
169 | Save the volatile registers required to be restored following INIT IPI.\r | |
170 | \r | |
171 | @param[out] VolatileRegisters Returns buffer saved the volatile resisters\r | |
172 | **/\r | |
173 | VOID\r | |
174 | SaveVolatileRegisters (\r | |
053e878b | 175 | OUT CPU_VOLATILE_REGISTERS *VolatileRegisters\r |
68cb9330 JF |
176 | )\r |
177 | {\r | |
053e878b | 178 | CPUID_VERSION_INFO_EDX VersionInfoEdx;\r |
68cb9330 JF |
179 | \r |
180 | VolatileRegisters->Cr0 = AsmReadCr0 ();\r | |
181 | VolatileRegisters->Cr3 = AsmReadCr3 ();\r | |
182 | VolatileRegisters->Cr4 = AsmReadCr4 ();\r | |
183 | \r | |
184 | AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &VersionInfoEdx.Uint32);\r | |
185 | if (VersionInfoEdx.Bits.DE != 0) {\r | |
186 | //\r | |
187 | // If processor supports Debugging Extensions feature\r | |
188 | // by CPUID.[EAX=01H]:EDX.BIT2\r | |
189 | //\r | |
190 | VolatileRegisters->Dr0 = AsmReadDr0 ();\r | |
191 | VolatileRegisters->Dr1 = AsmReadDr1 ();\r | |
192 | VolatileRegisters->Dr2 = AsmReadDr2 ();\r | |
193 | VolatileRegisters->Dr3 = AsmReadDr3 ();\r | |
194 | VolatileRegisters->Dr6 = AsmReadDr6 ();\r | |
195 | VolatileRegisters->Dr7 = AsmReadDr7 ();\r | |
196 | }\r | |
e9415e48 JW |
197 | \r |
198 | AsmReadGdtr (&VolatileRegisters->Gdtr);\r | |
199 | AsmReadIdtr (&VolatileRegisters->Idtr);\r | |
200 | VolatileRegisters->Tr = AsmReadTr ();\r | |
68cb9330 JF |
201 | }\r |
202 | \r | |
203 | /**\r | |
204 | Restore the volatile registers following INIT IPI.\r | |
205 | \r | |
206 | @param[in] VolatileRegisters Pointer to volatile resisters\r | |
207 | @param[in] IsRestoreDr TRUE: Restore DRx if supported\r | |
208 | FALSE: Do not restore DRx\r | |
209 | **/\r | |
210 | VOID\r | |
211 | RestoreVolatileRegisters (\r | |
053e878b MK |
212 | IN CPU_VOLATILE_REGISTERS *VolatileRegisters,\r |
213 | IN BOOLEAN IsRestoreDr\r | |
68cb9330 JF |
214 | )\r |
215 | {\r | |
053e878b MK |
216 | CPUID_VERSION_INFO_EDX VersionInfoEdx;\r |
217 | IA32_TSS_DESCRIPTOR *Tss;\r | |
68cb9330 | 218 | \r |
68cb9330 JF |
219 | AsmWriteCr3 (VolatileRegisters->Cr3);\r |
220 | AsmWriteCr4 (VolatileRegisters->Cr4);\r | |
e09b6b59 | 221 | AsmWriteCr0 (VolatileRegisters->Cr0);\r |
68cb9330 JF |
222 | \r |
223 | if (IsRestoreDr) {\r | |
224 | AsmCpuid (CPUID_VERSION_INFO, NULL, NULL, NULL, &VersionInfoEdx.Uint32);\r | |
225 | if (VersionInfoEdx.Bits.DE != 0) {\r | |
226 | //\r | |
227 | // If processor supports Debugging Extensions feature\r | |
228 | // by CPUID.[EAX=01H]:EDX.BIT2\r | |
229 | //\r | |
230 | AsmWriteDr0 (VolatileRegisters->Dr0);\r | |
231 | AsmWriteDr1 (VolatileRegisters->Dr1);\r | |
232 | AsmWriteDr2 (VolatileRegisters->Dr2);\r | |
233 | AsmWriteDr3 (VolatileRegisters->Dr3);\r | |
234 | AsmWriteDr6 (VolatileRegisters->Dr6);\r | |
235 | AsmWriteDr7 (VolatileRegisters->Dr7);\r | |
236 | }\r | |
237 | }\r | |
e9415e48 JW |
238 | \r |
239 | AsmWriteGdtr (&VolatileRegisters->Gdtr);\r | |
240 | AsmWriteIdtr (&VolatileRegisters->Idtr);\r | |
053e878b MK |
241 | if ((VolatileRegisters->Tr != 0) &&\r |
242 | (VolatileRegisters->Tr < VolatileRegisters->Gdtr.Limit))\r | |
243 | {\r | |
e9415e48 JW |
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 | |
053e878b | 264 | CPUID_VERSION_INFO_ECX VersionInfoEcx;\r |
9ebcf0f4 JF |
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 | |
053e878b | 279 | OUT UINT32 *MonitorFilterSize\r |
9ebcf0f4 JF |
280 | )\r |
281 | {\r | |
053e878b MK |
282 | UINT8 ApLoopMode;\r |
283 | CPUID_MONITOR_MWAIT_EBX MonitorMwaitEbx;\r | |
9ebcf0f4 JF |
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 | |
7b7508ad | 297 | \r |
b95908e0 | 298 | if (ConfidentialComputingGuestHas (CCAttrAmdSevEs)) {\r |
7b7508ad TL |
299 | //\r |
300 | // For SEV-ES, force AP in Hlt-loop mode in order to use the GHCB\r | |
301 | // protocol for starting APs\r | |
302 | //\r | |
303 | ApLoopMode = ApInHltLoop;\r | |
304 | }\r | |
9ebcf0f4 JF |
305 | }\r |
306 | \r | |
307 | if (ApLoopMode != ApInMwaitLoop) {\r | |
308 | *MonitorFilterSize = sizeof (UINT32);\r | |
309 | } else {\r | |
310 | //\r | |
311 | // CPUID.[EAX=05H]:EBX.BIT0-15: Largest monitor-line size in bytes\r | |
312 | // CPUID.[EAX=05H].EDX: C-states supported using MWAIT\r | |
313 | //\r | |
314 | AsmCpuid (CPUID_MONITOR_MWAIT, NULL, &MonitorMwaitEbx.Uint32, NULL, NULL);\r | |
315 | *MonitorFilterSize = MonitorMwaitEbx.Bits.LargestMonitorLineSize;\r | |
316 | }\r | |
317 | \r | |
318 | return ApLoopMode;\r | |
319 | }\r | |
b8b04307 | 320 | \r |
8a2d564b JF |
321 | /**\r |
322 | Sort the APIC ID of all processors.\r | |
323 | \r | |
324 | This function sorts the APIC ID of all processors so that processor number is\r | |
325 | assigned in the ascending order of APIC ID which eases MP debugging.\r | |
326 | \r | |
327 | @param[in] CpuMpData Pointer to PEI CPU MP Data\r | |
328 | **/\r | |
329 | VOID\r | |
330 | SortApicId (\r | |
053e878b | 331 | IN CPU_MP_DATA *CpuMpData\r |
8a2d564b JF |
332 | )\r |
333 | {\r | |
053e878b MK |
334 | UINTN Index1;\r |
335 | UINTN Index2;\r | |
336 | UINTN Index3;\r | |
337 | UINT32 ApicId;\r | |
338 | CPU_INFO_IN_HOB CpuInfo;\r | |
339 | UINT32 ApCount;\r | |
340 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
341 | volatile UINT32 *StartupApSignal;\r | |
342 | \r | |
343 | ApCount = CpuMpData->CpuCount - 1;\r | |
344 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r | |
8a2d564b JF |
345 | if (ApCount != 0) {\r |
346 | for (Index1 = 0; Index1 < ApCount; Index1++) {\r | |
347 | Index3 = Index1;\r | |
348 | //\r | |
349 | // Sort key is the hardware default APIC ID\r | |
350 | //\r | |
31a1e4da | 351 | ApicId = CpuInfoInHob[Index1].ApicId;\r |
8a2d564b | 352 | for (Index2 = Index1 + 1; Index2 <= ApCount; Index2++) {\r |
31a1e4da | 353 | if (ApicId > CpuInfoInHob[Index2].ApicId) {\r |
8a2d564b | 354 | Index3 = Index2;\r |
31a1e4da | 355 | ApicId = CpuInfoInHob[Index2].ApicId;\r |
8a2d564b JF |
356 | }\r |
357 | }\r | |
053e878b | 358 | \r |
8a2d564b | 359 | if (Index3 != Index1) {\r |
31a1e4da | 360 | CopyMem (&CpuInfo, &CpuInfoInHob[Index3], sizeof (CPU_INFO_IN_HOB));\r |
8a2d564b | 361 | CopyMem (\r |
31a1e4da JF |
362 | &CpuInfoInHob[Index3],\r |
363 | &CpuInfoInHob[Index1],\r | |
364 | sizeof (CPU_INFO_IN_HOB)\r | |
8a2d564b | 365 | );\r |
31a1e4da | 366 | CopyMem (&CpuInfoInHob[Index1], &CpuInfo, sizeof (CPU_INFO_IN_HOB));\r |
bafa76ef SZ |
367 | \r |
368 | //\r | |
369 | // Also exchange the StartupApSignal.\r | |
370 | //\r | |
053e878b | 371 | StartupApSignal = CpuMpData->CpuData[Index3].StartupApSignal;\r |
bafa76ef SZ |
372 | CpuMpData->CpuData[Index3].StartupApSignal =\r |
373 | CpuMpData->CpuData[Index1].StartupApSignal;\r | |
374 | CpuMpData->CpuData[Index1].StartupApSignal = StartupApSignal;\r | |
8a2d564b JF |
375 | }\r |
376 | }\r | |
377 | \r | |
378 | //\r | |
379 | // Get the processor number for the BSP\r | |
380 | //\r | |
381 | ApicId = GetInitialApicId ();\r | |
382 | for (Index1 = 0; Index1 < CpuMpData->CpuCount; Index1++) {\r | |
31a1e4da | 383 | if (CpuInfoInHob[Index1].ApicId == ApicId) {\r |
053e878b | 384 | CpuMpData->BspNumber = (UINT32)Index1;\r |
8a2d564b JF |
385 | break;\r |
386 | }\r | |
387 | }\r | |
8a2d564b JF |
388 | }\r |
389 | }\r | |
390 | \r | |
fe627769 JF |
391 | /**\r |
392 | Enable x2APIC mode on APs.\r | |
393 | \r | |
394 | @param[in, out] Buffer Pointer to private data buffer.\r | |
395 | **/\r | |
396 | VOID\r | |
397 | EFIAPI\r | |
398 | ApFuncEnableX2Apic (\r | |
399 | IN OUT VOID *Buffer\r | |
400 | )\r | |
401 | {\r | |
402 | SetApicMode (LOCAL_APIC_MODE_X2APIC);\r | |
403 | }\r | |
404 | \r | |
b8b04307 JF |
405 | /**\r |
406 | Do sync on APs.\r | |
407 | \r | |
408 | @param[in, out] Buffer Pointer to private data buffer.\r | |
409 | **/\r | |
410 | VOID\r | |
411 | EFIAPI\r | |
412 | ApInitializeSync (\r | |
413 | IN OUT VOID *Buffer\r | |
414 | )\r | |
415 | {\r | |
416 | CPU_MP_DATA *CpuMpData;\r | |
e1ed5573 HW |
417 | UINTN ProcessorNumber;\r |
418 | EFI_STATUS Status;\r | |
b8b04307 | 419 | \r |
053e878b MK |
420 | CpuMpData = (CPU_MP_DATA *)Buffer;\r |
421 | Status = GetProcessorNumber (CpuMpData, &ProcessorNumber);\r | |
e1ed5573 | 422 | ASSERT_EFI_ERROR (Status);\r |
b8b04307 | 423 | //\r |
b8b04307 JF |
424 | // Load microcode on AP\r |
425 | //\r | |
e1ed5573 | 426 | MicrocodeDetect (CpuMpData, ProcessorNumber);\r |
cb811673 JF |
427 | //\r |
428 | // Sync BSP's MTRR table to AP\r | |
429 | //\r | |
430 | MtrrSetAllMtrrs (&CpuMpData->MtrrTable);\r | |
b8b04307 JF |
431 | }\r |
432 | \r | |
433 | /**\r | |
434 | Find the current Processor number by APIC ID.\r | |
435 | \r | |
367284e7 DB |
436 | @param[in] CpuMpData Pointer to PEI CPU MP Data\r |
437 | @param[out] ProcessorNumber Return the pocessor number found\r | |
b8b04307 JF |
438 | \r |
439 | @retval EFI_SUCCESS ProcessorNumber is found and returned.\r | |
440 | @retval EFI_NOT_FOUND ProcessorNumber is not found.\r | |
441 | **/\r | |
442 | EFI_STATUS\r | |
443 | GetProcessorNumber (\r | |
053e878b MK |
444 | IN CPU_MP_DATA *CpuMpData,\r |
445 | OUT UINTN *ProcessorNumber\r | |
b8b04307 JF |
446 | )\r |
447 | {\r | |
053e878b MK |
448 | UINTN TotalProcessorNumber;\r |
449 | UINTN Index;\r | |
450 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
451 | UINT32 CurrentApicId;\r | |
31a1e4da | 452 | \r |
053e878b | 453 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r |
b8b04307 JF |
454 | \r |
455 | TotalProcessorNumber = CpuMpData->CpuCount;\r | |
053e878b MK |
456 | CurrentApicId = GetApicId ();\r |
457 | for (Index = 0; Index < TotalProcessorNumber; Index++) {\r | |
e52838d3 | 458 | if (CpuInfoInHob[Index].ApicId == CurrentApicId) {\r |
b8b04307 JF |
459 | *ProcessorNumber = Index;\r |
460 | return EFI_SUCCESS;\r | |
461 | }\r | |
462 | }\r | |
e52838d3 | 463 | \r |
b8b04307 JF |
464 | return EFI_NOT_FOUND;\r |
465 | }\r | |
466 | \r | |
03434dff JF |
467 | /**\r |
468 | This function will get CPU count in the system.\r | |
469 | \r | |
470 | @param[in] CpuMpData Pointer to PEI CPU MP Data\r | |
471 | \r | |
472 | @return CPU count detected\r | |
473 | **/\r | |
474 | UINTN\r | |
475 | CollectProcessorCount (\r | |
053e878b | 476 | IN CPU_MP_DATA *CpuMpData\r |
03434dff JF |
477 | )\r |
478 | {\r | |
053e878b MK |
479 | UINTN Index;\r |
480 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
481 | BOOLEAN X2Apic;\r | |
59a119f0 | 482 | \r |
03434dff JF |
483 | //\r |
484 | // Send 1st broadcast IPI to APs to wakeup APs\r | |
485 | //\r | |
fe3ca5fd | 486 | CpuMpData->InitFlag = ApInitConfig;\r |
cf4e79e4 | 487 | WakeUpAP (CpuMpData, TRUE, 0, NULL, NULL, TRUE);\r |
03434dff | 488 | CpuMpData->InitFlag = ApInitDone;\r |
03434dff | 489 | //\r |
c6be6dab RN |
490 | // When InitFlag == ApInitConfig, WakeUpAP () guarantees all APs are checked in.\r |
491 | // FinishedCount is the number of check-in APs.\r | |
03434dff | 492 | //\r |
c6be6dab RN |
493 | CpuMpData->CpuCount = CpuMpData->FinishedCount + 1;\r |
494 | ASSERT (CpuMpData->CpuCount <= PcdGet32 (PcdCpuMaxLogicalProcessorNumber));\r | |
9c33f16f | 495 | \r |
54d1e76f RN |
496 | //\r |
497 | // Enable x2APIC mode if\r | |
498 | // 1. Number of CPU is greater than 255; or\r | |
499 | // 2. There are any logical processors reporting an Initial APIC ID of 255 or greater.\r | |
500 | //\r | |
fe3ca5fd | 501 | X2Apic = FALSE;\r |
71d8226a JF |
502 | if (CpuMpData->CpuCount > 255) {\r |
503 | //\r | |
504 | // If there are more than 255 processor found, force to enable X2APIC\r | |
505 | //\r | |
fe3ca5fd | 506 | X2Apic = TRUE;\r |
54d1e76f | 507 | } else {\r |
053e878b | 508 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r |
54d1e76f RN |
509 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r |
510 | if (CpuInfoInHob[Index].InitialApicId >= 0xFF) {\r | |
fe3ca5fd | 511 | X2Apic = TRUE;\r |
54d1e76f RN |
512 | break;\r |
513 | }\r | |
514 | }\r | |
71d8226a | 515 | }\r |
54d1e76f | 516 | \r |
fe3ca5fd | 517 | if (X2Apic) {\r |
fe627769 JF |
518 | DEBUG ((DEBUG_INFO, "Force x2APIC mode!\n"));\r |
519 | //\r | |
520 | // Wakeup all APs to enable x2APIC mode\r | |
521 | //\r | |
cf4e79e4 | 522 | WakeUpAP (CpuMpData, TRUE, 0, ApFuncEnableX2Apic, NULL, TRUE);\r |
fe627769 JF |
523 | //\r |
524 | // Wait for all known APs finished\r | |
525 | //\r | |
526 | while (CpuMpData->FinishedCount < (CpuMpData->CpuCount - 1)) {\r | |
527 | CpuPause ();\r | |
528 | }\r | |
053e878b | 529 | \r |
fe627769 JF |
530 | //\r |
531 | // Enable x2APIC on BSP\r | |
532 | //\r | |
533 | SetApicMode (LOCAL_APIC_MODE_X2APIC);\r | |
59a119f0 JF |
534 | //\r |
535 | // Set BSP/Aps state to IDLE\r | |
536 | //\r | |
537 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r | |
538 | SetApState (&CpuMpData->CpuData[Index], CpuStateIdle);\r | |
539 | }\r | |
fe627769 | 540 | }\r |
053e878b | 541 | \r |
fe627769 | 542 | DEBUG ((DEBUG_INFO, "APIC MODE is %d\n", GetApicMode ()));\r |
8a2d564b JF |
543 | //\r |
544 | // Sort BSP/Aps by CPU APIC ID in ascending order\r | |
545 | //\r | |
546 | SortApicId (CpuMpData);\r | |
547 | \r | |
03434dff JF |
548 | DEBUG ((DEBUG_INFO, "MpInitLib: Find %d processors in system.\n", CpuMpData->CpuCount));\r |
549 | \r | |
550 | return CpuMpData->CpuCount;\r | |
551 | }\r | |
552 | \r | |
367284e7 | 553 | /**\r |
03a1a925 JF |
554 | Initialize CPU AP Data when AP is wakeup at the first time.\r |
555 | \r | |
556 | @param[in, out] CpuMpData Pointer to PEI CPU MP Data\r | |
557 | @param[in] ProcessorNumber The handle number of processor\r | |
558 | @param[in] BistData Processor BIST data\r | |
367284e7 | 559 | @param[in] ApTopOfStack Top of AP stack\r |
03a1a925 JF |
560 | \r |
561 | **/\r | |
562 | VOID\r | |
563 | InitializeApData (\r | |
053e878b MK |
564 | IN OUT CPU_MP_DATA *CpuMpData,\r |
565 | IN UINTN ProcessorNumber,\r | |
566 | IN UINT32 BistData,\r | |
567 | IN UINT64 ApTopOfStack\r | |
03a1a925 JF |
568 | )\r |
569 | {\r | |
053e878b MK |
570 | CPU_INFO_IN_HOB *CpuInfoInHob;\r |
571 | MSR_IA32_PLATFORM_ID_REGISTER PlatformIdMsr;\r | |
31a1e4da | 572 | \r |
053e878b | 573 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r |
31a1e4da JF |
574 | CpuInfoInHob[ProcessorNumber].InitialApicId = GetInitialApicId ();\r |
575 | CpuInfoInHob[ProcessorNumber].ApicId = GetApicId ();\r | |
576 | CpuInfoInHob[ProcessorNumber].Health = BistData;\r | |
dd3fa0cd | 577 | CpuInfoInHob[ProcessorNumber].ApTopOfStack = ApTopOfStack;\r |
31a1e4da | 578 | \r |
03a1a925 | 579 | CpuMpData->CpuData[ProcessorNumber].Waiting = FALSE;\r |
03a1a925 | 580 | CpuMpData->CpuData[ProcessorNumber].CpuHealthy = (BistData == 0) ? TRUE : FALSE;\r |
03a1a925 | 581 | \r |
4c0f6e34 LD |
582 | //\r |
583 | // NOTE: PlatformId is not relevant on AMD platforms.\r | |
584 | //\r | |
585 | if (!StandardSignatureIsAuthenticAMD ()) {\r | |
053e878b | 586 | PlatformIdMsr.Uint64 = AsmReadMsr64 (MSR_IA32_PLATFORM_ID);\r |
4c0f6e34 LD |
587 | CpuMpData->CpuData[ProcessorNumber].PlatformId = (UINT8)PlatformIdMsr.Bits.PlatformId;\r |
588 | }\r | |
999463c8 HW |
589 | \r |
590 | AsmCpuid (\r | |
591 | CPUID_VERSION_INFO,\r | |
592 | &CpuMpData->CpuData[ProcessorNumber].ProcessorSignature,\r | |
593 | NULL,\r | |
594 | NULL,\r | |
595 | NULL\r | |
596 | );\r | |
597 | \r | |
053e878b | 598 | InitializeSpinLock (&CpuMpData->CpuData[ProcessorNumber].ApLock);\r |
03a1a925 JF |
599 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateIdle);\r |
600 | }\r | |
601 | \r | |
b8b04307 JF |
602 | /**\r |
603 | This function will be called from AP reset code if BSP uses WakeUpAP.\r | |
604 | \r | |
605 | @param[in] ExchangeInfo Pointer to the MP exchange info buffer\r | |
9fcea114 | 606 | @param[in] ApIndex Number of current executing AP\r |
b8b04307 JF |
607 | **/\r |
608 | VOID\r | |
609 | EFIAPI\r | |
610 | ApWakeupFunction (\r | |
053e878b MK |
611 | IN MP_CPU_EXCHANGE_INFO *ExchangeInfo,\r |
612 | IN UINTN ApIndex\r | |
b8b04307 JF |
613 | )\r |
614 | {\r | |
053e878b MK |
615 | CPU_MP_DATA *CpuMpData;\r |
616 | UINTN ProcessorNumber;\r | |
617 | EFI_AP_PROCEDURE Procedure;\r | |
618 | VOID *Parameter;\r | |
619 | UINT32 BistData;\r | |
620 | volatile UINT32 *ApStartupSignalBuffer;\r | |
621 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
622 | UINT64 ApTopOfStack;\r | |
623 | UINTN CurrentApicMode;\r | |
b8b04307 JF |
624 | \r |
625 | //\r | |
626 | // AP finished assembly code and begin to execute C code\r | |
627 | //\r | |
628 | CpuMpData = ExchangeInfo->CpuMpData;\r | |
629 | \r | |
ffab2442 JF |
630 | //\r |
631 | // AP's local APIC settings will be lost after received INIT IPI\r | |
632 | // We need to re-initialize them at here\r | |
633 | //\r | |
634 | ProgramVirtualWireMode ();\r | |
a2ea6894 RN |
635 | //\r |
636 | // Mask the LINT0 and LINT1 so that AP doesn't enter the system timer interrupt handler.\r | |
637 | //\r | |
638 | DisableLvtInterrupts ();\r | |
ffab2442 | 639 | SyncLocalApicTimerSetting (CpuMpData);\r |
b8b04307 | 640 | \r |
c6b0feb3 | 641 | CurrentApicMode = GetApicMode ();\r |
b8b04307 JF |
642 | while (TRUE) {\r |
643 | if (CpuMpData->InitFlag == ApInitConfig) {\r | |
37676b9f | 644 | ProcessorNumber = ApIndex;\r |
b8b04307 JF |
645 | //\r |
646 | // This is first time AP wakeup, get BIST information from AP stack\r | |
647 | //\r | |
053e878b MK |
648 | ApTopOfStack = CpuMpData->Buffer + (ProcessorNumber + 1) * CpuMpData->CpuApStackSize;\r |
649 | BistData = *(UINT32 *)((UINTN)ApTopOfStack - sizeof (UINTN));\r | |
b8b04307 | 650 | //\r |
c563077a RN |
651 | // CpuMpData->CpuData[0].VolatileRegisters is initialized based on BSP environment,\r |
652 | // to initialize AP in InitConfig path.\r | |
653 | // NOTE: IDTR.BASE stored in CpuMpData->CpuData[0].VolatileRegisters points to a different IDT shared by all APs.\r | |
b8b04307 JF |
654 | //\r |
655 | RestoreVolatileRegisters (&CpuMpData->CpuData[0].VolatileRegisters, FALSE);\r | |
845c5be1 | 656 | InitializeApData (CpuMpData, ProcessorNumber, BistData, ApTopOfStack);\r |
b8b04307 JF |
657 | ApStartupSignalBuffer = CpuMpData->CpuData[ProcessorNumber].StartupApSignal;\r |
658 | } else {\r | |
659 | //\r | |
660 | // Execute AP function if AP is ready\r | |
661 | //\r | |
662 | GetProcessorNumber (CpuMpData, &ProcessorNumber);\r | |
663 | //\r | |
664 | // Clear AP start-up signal when AP waken up\r | |
665 | //\r | |
666 | ApStartupSignalBuffer = CpuMpData->CpuData[ProcessorNumber].StartupApSignal;\r | |
667 | InterlockedCompareExchange32 (\r | |
053e878b | 668 | (UINT32 *)ApStartupSignalBuffer,\r |
b8b04307 JF |
669 | WAKEUP_AP_SIGNAL,\r |
670 | 0\r | |
671 | );\r | |
052aa07d ED |
672 | \r |
673 | if (CpuMpData->InitFlag == ApInitReconfig) {\r | |
199de896 | 674 | //\r |
052aa07d ED |
675 | // ApInitReconfig happens when:\r |
676 | // 1. AP is re-enabled after it's disabled, in either PEI or DXE phase.\r | |
677 | // 2. AP is initialized in DXE phase.\r | |
678 | // In either case, use the volatile registers value derived from BSP.\r | |
679 | // NOTE: IDTR.BASE stored in CpuMpData->CpuData[0].VolatileRegisters points to a\r | |
680 | // different IDT shared by all APs.\r | |
199de896 | 681 | //\r |
052aa07d | 682 | RestoreVolatileRegisters (&CpuMpData->CpuData[0].VolatileRegisters, FALSE);\r |
053e878b | 683 | } else {\r |
052aa07d ED |
684 | if (CpuMpData->ApLoopMode == ApInHltLoop) {\r |
685 | //\r | |
686 | // Restore AP's volatile registers saved before AP is halted\r | |
687 | //\r | |
688 | RestoreVolatileRegisters (&CpuMpData->CpuData[ProcessorNumber].VolatileRegisters, TRUE);\r | |
689 | } else {\r | |
690 | //\r | |
691 | // The CPU driver might not flush TLB for APs on spot after updating\r | |
692 | // page attributes. AP in mwait loop mode needs to take care of it when\r | |
693 | // woken up.\r | |
694 | //\r | |
695 | CpuFlushTlb ();\r | |
696 | }\r | |
b8b04307 JF |
697 | }\r |
698 | \r | |
699 | if (GetApState (&CpuMpData->CpuData[ProcessorNumber]) == CpuStateReady) {\r | |
700 | Procedure = (EFI_AP_PROCEDURE)CpuMpData->CpuData[ProcessorNumber].ApFunction;\r | |
053e878b | 701 | Parameter = (VOID *)CpuMpData->CpuData[ProcessorNumber].ApFunctionArgument;\r |
b8b04307 JF |
702 | if (Procedure != NULL) {\r |
703 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateBusy);\r | |
704 | //\r | |
43c9fdcc | 705 | // Enable source debugging on AP function\r |
7367cc6c | 706 | //\r |
43c9fdcc JF |
707 | EnableDebugAgent ();\r |
708 | //\r | |
b8b04307 JF |
709 | // Invoke AP function here\r |
710 | //\r | |
711 | Procedure (Parameter);\r | |
053e878b | 712 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r |
41be0da5 JF |
713 | if (CpuMpData->SwitchBspFlag) {\r |
714 | //\r | |
715 | // Re-get the processor number due to BSP/AP maybe exchange in AP function\r | |
716 | //\r | |
717 | GetProcessorNumber (CpuMpData, &ProcessorNumber);\r | |
053e878b | 718 | CpuMpData->CpuData[ProcessorNumber].ApFunction = 0;\r |
41be0da5 | 719 | CpuMpData->CpuData[ProcessorNumber].ApFunctionArgument = 0;\r |
053e878b MK |
720 | ApStartupSignalBuffer = CpuMpData->CpuData[ProcessorNumber].StartupApSignal;\r |
721 | CpuInfoInHob[ProcessorNumber].ApTopOfStack = CpuInfoInHob[CpuMpData->NewBspNumber].ApTopOfStack;\r | |
41be0da5 | 722 | } else {\r |
053e878b MK |
723 | if ((CpuInfoInHob[ProcessorNumber].ApicId != GetApicId ()) ||\r |
724 | (CpuInfoInHob[ProcessorNumber].InitialApicId != GetInitialApicId ()))\r | |
725 | {\r | |
c6b0feb3 JF |
726 | if (CurrentApicMode != GetApicMode ()) {\r |
727 | //\r | |
728 | // If APIC mode change happened during AP function execution,\r | |
729 | // we do not support APIC ID value changed.\r | |
730 | //\r | |
731 | ASSERT (FALSE);\r | |
732 | CpuDeadLoop ();\r | |
733 | } else {\r | |
734 | //\r | |
735 | // Re-get the CPU APICID and Initial APICID if they are changed\r | |
736 | //\r | |
737 | CpuInfoInHob[ProcessorNumber].ApicId = GetApicId ();\r | |
738 | CpuInfoInHob[ProcessorNumber].InitialApicId = GetInitialApicId ();\r | |
739 | }\r | |
740 | }\r | |
41be0da5 | 741 | }\r |
b8b04307 | 742 | }\r |
053e878b | 743 | \r |
e048ce88 | 744 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateFinished);\r |
b8b04307 JF |
745 | }\r |
746 | }\r | |
747 | \r | |
1c5c7bcd MK |
748 | if (CpuMpData->ApLoopMode == ApInHltLoop) {\r |
749 | //\r | |
750 | // Save AP volatile registers\r | |
751 | //\r | |
752 | SaveVolatileRegisters (&CpuMpData->CpuData[ProcessorNumber].VolatileRegisters);\r | |
753 | }\r | |
754 | \r | |
b8b04307 JF |
755 | //\r |
756 | // AP finished executing C code\r | |
757 | //\r | |
053e878b | 758 | InterlockedIncrement ((UINT32 *)&CpuMpData->FinishedCount);\r |
b8b04307 | 759 | \r |
1c5c7bcd MK |
760 | if (CpuMpData->InitFlag == ApInitConfig) {\r |
761 | //\r | |
762 | // Delay decrementing the APs executing count when SEV-ES is enabled\r | |
763 | // to allow the APs to issue an AP_RESET_HOLD before the BSP possibly\r | |
764 | // performs another INIT-SIPI-SIPI sequence.\r | |
765 | //\r | |
766 | if (!CpuMpData->SevEsIsEnabled) {\r | |
053e878b | 767 | InterlockedDecrement ((UINT32 *)&CpuMpData->MpCpuExchangeInfo->NumApsExecuting);\r |
1c5c7bcd MK |
768 | }\r |
769 | }\r | |
770 | \r | |
b8b04307 JF |
771 | //\r |
772 | // Place AP is specified loop mode\r | |
773 | //\r | |
774 | if (CpuMpData->ApLoopMode == ApInHltLoop) {\r | |
b8b04307 JF |
775 | //\r |
776 | // Place AP in HLT-loop\r | |
777 | //\r | |
778 | while (TRUE) {\r | |
779 | DisableInterrupts ();\r | |
7b7508ad | 780 | if (CpuMpData->SevEsIsEnabled) {\r |
e2289d19 | 781 | SevEsPlaceApHlt (CpuMpData);\r |
7b7508ad TL |
782 | } else {\r |
783 | CpuSleep ();\r | |
784 | }\r | |
053e878b | 785 | \r |
b8b04307 JF |
786 | CpuPause ();\r |
787 | }\r | |
788 | }\r | |
053e878b | 789 | \r |
b8b04307 JF |
790 | while (TRUE) {\r |
791 | DisableInterrupts ();\r | |
792 | if (CpuMpData->ApLoopMode == ApInMwaitLoop) {\r | |
793 | //\r | |
794 | // Place AP in MWAIT-loop\r | |
795 | //\r | |
053e878b | 796 | AsmMonitor ((UINTN)ApStartupSignalBuffer, 0, 0);\r |
b8b04307 JF |
797 | if (*ApStartupSignalBuffer != WAKEUP_AP_SIGNAL) {\r |
798 | //\r | |
799 | // Check AP start-up signal again.\r | |
800 | // If AP start-up signal is not set, place AP into\r | |
801 | // the specified C-state\r | |
802 | //\r | |
803 | AsmMwait (CpuMpData->ApTargetCState << 4, 0);\r | |
804 | }\r | |
805 | } else if (CpuMpData->ApLoopMode == ApInRunLoop) {\r | |
806 | //\r | |
807 | // Place AP in Run-loop\r | |
808 | //\r | |
809 | CpuPause ();\r | |
810 | } else {\r | |
811 | ASSERT (FALSE);\r | |
812 | }\r | |
813 | \r | |
814 | //\r | |
815 | // If AP start-up signal is written, AP is waken up\r | |
816 | // otherwise place AP in loop again\r | |
817 | //\r | |
818 | if (*ApStartupSignalBuffer == WAKEUP_AP_SIGNAL) {\r | |
819 | break;\r | |
820 | }\r | |
821 | }\r | |
822 | }\r | |
823 | }\r | |
824 | \r | |
96f5920d JF |
825 | /**\r |
826 | Wait for AP wakeup and write AP start-up signal till AP is waken up.\r | |
827 | \r | |
828 | @param[in] ApStartupSignalBuffer Pointer to AP wakeup signal\r | |
829 | **/\r | |
830 | VOID\r | |
831 | WaitApWakeup (\r | |
053e878b | 832 | IN volatile UINT32 *ApStartupSignalBuffer\r |
96f5920d JF |
833 | )\r |
834 | {\r | |
835 | //\r | |
836 | // If AP is waken up, StartupApSignal should be cleared.\r | |
837 | // Otherwise, write StartupApSignal again till AP waken up.\r | |
838 | //\r | |
839 | while (InterlockedCompareExchange32 (\r | |
053e878b MK |
840 | (UINT32 *)ApStartupSignalBuffer,\r |
841 | WAKEUP_AP_SIGNAL,\r | |
842 | WAKEUP_AP_SIGNAL\r | |
843 | ) != 0)\r | |
844 | {\r | |
96f5920d JF |
845 | CpuPause ();\r |
846 | }\r | |
847 | }\r | |
848 | \r | |
7c3f2a12 JF |
849 | /**\r |
850 | This function will fill the exchange info structure.\r | |
851 | \r | |
852 | @param[in] CpuMpData Pointer to CPU MP Data\r | |
853 | \r | |
854 | **/\r | |
855 | VOID\r | |
856 | FillExchangeInfoData (\r | |
053e878b | 857 | IN CPU_MP_DATA *CpuMpData\r |
7c3f2a12 JF |
858 | )\r |
859 | {\r | |
053e878b MK |
860 | volatile MP_CPU_EXCHANGE_INFO *ExchangeInfo;\r |
861 | UINTN Size;\r | |
862 | IA32_SEGMENT_DESCRIPTOR *Selector;\r | |
863 | IA32_CR4 Cr4;\r | |
7c3f2a12 | 864 | \r |
053e878b MK |
865 | ExchangeInfo = CpuMpData->MpCpuExchangeInfo;\r |
866 | ExchangeInfo->StackStart = CpuMpData->Buffer;\r | |
867 | ExchangeInfo->StackSize = CpuMpData->CpuApStackSize;\r | |
868 | ExchangeInfo->BufferStart = CpuMpData->WakeupBuffer;\r | |
869 | ExchangeInfo->ModeOffset = CpuMpData->AddressMap.ModeEntryOffset;\r | |
7c3f2a12 | 870 | \r |
053e878b MK |
871 | ExchangeInfo->CodeSegment = AsmReadCs ();\r |
872 | ExchangeInfo->DataSegment = AsmReadDs ();\r | |
7c3f2a12 | 873 | \r |
053e878b | 874 | ExchangeInfo->Cr3 = AsmReadCr3 ();\r |
7c3f2a12 | 875 | \r |
053e878b | 876 | ExchangeInfo->CFunction = (UINTN)ApWakeupFunction;\r |
37676b9f | 877 | ExchangeInfo->ApIndex = 0;\r |
0594ec41 | 878 | ExchangeInfo->NumApsExecuting = 0;\r |
053e878b MK |
879 | ExchangeInfo->InitFlag = (UINTN)CpuMpData->InitFlag;\r |
880 | ExchangeInfo->CpuInfo = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r | |
7c3f2a12 JF |
881 | ExchangeInfo->CpuMpData = CpuMpData;\r |
882 | \r | |
883 | ExchangeInfo->EnableExecuteDisable = IsBspExecuteDisableEnabled ();\r | |
884 | \r | |
3b2928b4 MK |
885 | ExchangeInfo->InitializeFloatingPointUnitsAddress = (UINTN)InitializeFloatingPointUnits;\r |
886 | \r | |
09f69a87 RN |
887 | //\r |
888 | // We can check either CPUID(7).ECX[bit16] or check CR4.LA57[bit12]\r | |
889 | // to determin whether 5-Level Paging is enabled.\r | |
890 | // CPUID(7).ECX[bit16] shows CPU's capability, CR4.LA57[bit12] shows\r | |
891 | // current system setting.\r | |
892 | // Using latter way is simpler because it also eliminates the needs to\r | |
893 | // check whether platform wants to enable it.\r | |
894 | //\r | |
053e878b MK |
895 | Cr4.UintN = AsmReadCr4 ();\r |
896 | ExchangeInfo->Enable5LevelPaging = (BOOLEAN)(Cr4.Bits.LA57 == 1);\r | |
09f69a87 RN |
897 | DEBUG ((DEBUG_INFO, "%a: 5-Level Paging = %d\n", gEfiCallerBaseName, ExchangeInfo->Enable5LevelPaging));\r |
898 | \r | |
053e878b MK |
899 | ExchangeInfo->SevEsIsEnabled = CpuMpData->SevEsIsEnabled;\r |
900 | ExchangeInfo->GhcbBase = (UINTN)CpuMpData->GhcbBase;\r | |
7b7508ad | 901 | \r |
7c3f2a12 JF |
902 | //\r |
903 | // Get the BSP's data of GDT and IDT\r | |
904 | //\r | |
053e878b MK |
905 | AsmReadGdtr ((IA32_DESCRIPTOR *)&ExchangeInfo->GdtrProfile);\r |
906 | AsmReadIdtr ((IA32_DESCRIPTOR *)&ExchangeInfo->IdtrProfile);\r | |
f32bfe6d JW |
907 | \r |
908 | //\r | |
909 | // Find a 32-bit code segment\r | |
910 | //\r | |
911 | Selector = (IA32_SEGMENT_DESCRIPTOR *)ExchangeInfo->GdtrProfile.Base;\r | |
053e878b | 912 | Size = ExchangeInfo->GdtrProfile.Limit + 1;\r |
f32bfe6d | 913 | while (Size > 0) {\r |
053e878b | 914 | if ((Selector->Bits.L == 0) && (Selector->Bits.Type >= 8)) {\r |
f32bfe6d JW |
915 | ExchangeInfo->ModeTransitionSegment =\r |
916 | (UINT16)((UINTN)Selector - ExchangeInfo->GdtrProfile.Base);\r | |
917 | break;\r | |
918 | }\r | |
053e878b | 919 | \r |
f32bfe6d | 920 | Selector += 1;\r |
053e878b | 921 | Size -= sizeof (IA32_SEGMENT_DESCRIPTOR);\r |
f32bfe6d JW |
922 | }\r |
923 | \r | |
924 | //\r | |
925 | // Copy all 32-bit code and 64-bit code into memory with type of\r | |
926 | // EfiBootServicesCode to avoid page fault if NX memory protection is enabled.\r | |
927 | //\r | |
66833b2a | 928 | if (CpuMpData->WakeupBufferHigh != 0) {\r |
7b7508ad | 929 | Size = CpuMpData->AddressMap.RendezvousFunnelSize +\r |
053e878b MK |
930 | CpuMpData->AddressMap.SwitchToRealSize -\r |
931 | CpuMpData->AddressMap.ModeTransitionOffset;\r | |
f32bfe6d | 932 | CopyMem (\r |
66833b2a | 933 | (VOID *)CpuMpData->WakeupBufferHigh,\r |
f32bfe6d JW |
934 | CpuMpData->AddressMap.RendezvousFunnelAddress +\r |
935 | CpuMpData->AddressMap.ModeTransitionOffset,\r | |
936 | Size\r | |
937 | );\r | |
938 | \r | |
66833b2a | 939 | ExchangeInfo->ModeTransitionMemory = (UINT32)CpuMpData->WakeupBufferHigh;\r |
f32bfe6d JW |
940 | } else {\r |
941 | ExchangeInfo->ModeTransitionMemory = (UINT32)\r | |
053e878b | 942 | (ExchangeInfo->BufferStart + CpuMpData->AddressMap.ModeTransitionOffset);\r |
f32bfe6d | 943 | }\r |
69dfa8d8 JW |
944 | \r |
945 | ExchangeInfo->ModeHighMemory = ExchangeInfo->ModeTransitionMemory +\r | |
053e878b MK |
946 | (UINT32)ExchangeInfo->ModeOffset -\r |
947 | (UINT32)CpuMpData->AddressMap.ModeTransitionOffset;\r | |
69dfa8d8 | 948 | ExchangeInfo->ModeHighSegment = (UINT16)ExchangeInfo->CodeSegment;\r |
7c3f2a12 JF |
949 | }\r |
950 | \r | |
6e1987f1 LE |
951 | /**\r |
952 | Helper function that waits until the finished AP count reaches the specified\r | |
953 | limit, or the specified timeout elapses (whichever comes first).\r | |
954 | \r | |
955 | @param[in] CpuMpData Pointer to CPU MP Data.\r | |
956 | @param[in] FinishedApLimit The number of finished APs to wait for.\r | |
957 | @param[in] TimeLimit The number of microseconds to wait for.\r | |
958 | **/\r | |
959 | VOID\r | |
960 | TimedWaitForApFinish (\r | |
053e878b MK |
961 | IN CPU_MP_DATA *CpuMpData,\r |
962 | IN UINT32 FinishedApLimit,\r | |
963 | IN UINT32 TimeLimit\r | |
6e1987f1 LE |
964 | );\r |
965 | \r | |
a6b3d753 SZ |
966 | /**\r |
967 | Get available system memory below 1MB by specified size.\r | |
968 | \r | |
969 | @param[in] CpuMpData The pointer to CPU MP Data structure.\r | |
970 | **/\r | |
971 | VOID\r | |
053e878b MK |
972 | BackupAndPrepareWakeupBuffer (\r |
973 | IN CPU_MP_DATA *CpuMpData\r | |
a6b3d753 SZ |
974 | )\r |
975 | {\r | |
976 | CopyMem (\r | |
053e878b MK |
977 | (VOID *)CpuMpData->BackupBuffer,\r |
978 | (VOID *)CpuMpData->WakeupBuffer,\r | |
a6b3d753 SZ |
979 | CpuMpData->BackupBufferSize\r |
980 | );\r | |
981 | CopyMem (\r | |
053e878b MK |
982 | (VOID *)CpuMpData->WakeupBuffer,\r |
983 | (VOID *)CpuMpData->AddressMap.RendezvousFunnelAddress,\r | |
7b7508ad | 984 | CpuMpData->AddressMap.RendezvousFunnelSize +\r |
053e878b | 985 | CpuMpData->AddressMap.SwitchToRealSize\r |
a6b3d753 SZ |
986 | );\r |
987 | }\r | |
988 | \r | |
989 | /**\r | |
990 | Restore wakeup buffer data.\r | |
991 | \r | |
992 | @param[in] CpuMpData The pointer to CPU MP Data structure.\r | |
993 | **/\r | |
994 | VOID\r | |
053e878b MK |
995 | RestoreWakeupBuffer (\r |
996 | IN CPU_MP_DATA *CpuMpData\r | |
a6b3d753 SZ |
997 | )\r |
998 | {\r | |
999 | CopyMem (\r | |
053e878b MK |
1000 | (VOID *)CpuMpData->WakeupBuffer,\r |
1001 | (VOID *)CpuMpData->BackupBuffer,\r | |
a6b3d753 SZ |
1002 | CpuMpData->BackupBufferSize\r |
1003 | );\r | |
1004 | }\r | |
1005 | \r | |
7b7508ad TL |
1006 | /**\r |
1007 | Calculate the size of the reset vector.\r | |
1008 | \r | |
1009 | @param[in] AddressMap The pointer to Address Map structure.\r | |
1010 | \r | |
1011 | @return Total amount of memory required for the AP reset area\r | |
1012 | **/\r | |
1013 | STATIC\r | |
1014 | UINTN\r | |
1015 | GetApResetVectorSize (\r | |
1016 | IN MP_ASSEMBLY_ADDRESS_MAP *AddressMap\r | |
1017 | )\r | |
1018 | {\r | |
1019 | UINTN Size;\r | |
1020 | \r | |
93edd188 | 1021 | Size = AddressMap->RendezvousFunnelSize +\r |
053e878b MK |
1022 | AddressMap->SwitchToRealSize +\r |
1023 | sizeof (MP_CPU_EXCHANGE_INFO);\r | |
93edd188 | 1024 | \r |
7b7508ad TL |
1025 | return Size;\r |
1026 | }\r | |
1027 | \r | |
a6b3d753 SZ |
1028 | /**\r |
1029 | Allocate reset vector buffer.\r | |
1030 | \r | |
1031 | @param[in, out] CpuMpData The pointer to CPU MP Data structure.\r | |
1032 | **/\r | |
1033 | VOID\r | |
1034 | AllocateResetVector (\r | |
053e878b | 1035 | IN OUT CPU_MP_DATA *CpuMpData\r |
a6b3d753 SZ |
1036 | )\r |
1037 | {\r | |
053e878b MK |
1038 | UINTN ApResetVectorSize;\r |
1039 | UINTN ApResetStackSize;\r | |
a6b3d753 | 1040 | \r |
053e878b | 1041 | if (CpuMpData->WakeupBuffer == (UINTN)-1) {\r |
7b7508ad | 1042 | ApResetVectorSize = GetApResetVectorSize (&CpuMpData->AddressMap);\r |
a6b3d753 SZ |
1043 | \r |
1044 | CpuMpData->WakeupBuffer = GetWakeupBuffer (ApResetVectorSize);\r | |
053e878b MK |
1045 | CpuMpData->MpCpuExchangeInfo = (MP_CPU_EXCHANGE_INFO *)(UINTN)\r |
1046 | (CpuMpData->WakeupBuffer +\r | |
1047 | CpuMpData->AddressMap.RendezvousFunnelSize +\r | |
1048 | CpuMpData->AddressMap.SwitchToRealSize);\r | |
1049 | CpuMpData->WakeupBufferHigh = GetModeTransitionBuffer (\r | |
7b7508ad TL |
1050 | CpuMpData->AddressMap.RendezvousFunnelSize +\r |
1051 | CpuMpData->AddressMap.SwitchToRealSize -\r | |
66833b2a JW |
1052 | CpuMpData->AddressMap.ModeTransitionOffset\r |
1053 | );\r | |
7b7508ad | 1054 | //\r |
dbc22a17 TL |
1055 | // The AP reset stack is only used by SEV-ES guests. Do not allocate it\r |
1056 | // if SEV-ES is not enabled.\r | |
7b7508ad | 1057 | //\r |
b95908e0 | 1058 | if (ConfidentialComputingGuestHas (CCAttrAmdSevEs)) {\r |
dbc22a17 TL |
1059 | //\r |
1060 | // Stack location is based on ProcessorNumber, so use the total number\r | |
1061 | // of processors for calculating the total stack area.\r | |
1062 | //\r | |
1063 | ApResetStackSize = (AP_RESET_STACK_SIZE *\r | |
1064 | PcdGet32 (PcdCpuMaxLogicalProcessorNumber));\r | |
1065 | \r | |
1066 | //\r | |
1067 | // Invoke GetWakeupBuffer a second time to allocate the stack area\r | |
1068 | // below 1MB. The returned buffer will be page aligned and sized and\r | |
1069 | // below the previously allocated buffer.\r | |
1070 | //\r | |
1071 | CpuMpData->SevEsAPResetStackStart = GetWakeupBuffer (ApResetStackSize);\r | |
1072 | \r | |
1073 | //\r | |
1074 | // Check to be sure that the "allocate below" behavior hasn't changed.\r | |
1075 | // This will also catch a failed allocation, as "-1" is returned on\r | |
1076 | // failure.\r | |
1077 | //\r | |
1078 | if (CpuMpData->SevEsAPResetStackStart >= CpuMpData->WakeupBuffer) {\r | |
1079 | DEBUG ((\r | |
1080 | DEBUG_ERROR,\r | |
1081 | "SEV-ES AP reset stack is not below wakeup buffer\n"\r | |
1082 | ));\r | |
1083 | \r | |
1084 | ASSERT (FALSE);\r | |
1085 | CpuDeadLoop ();\r | |
1086 | }\r | |
1087 | }\r | |
a6b3d753 | 1088 | }\r |
053e878b | 1089 | \r |
a6b3d753 SZ |
1090 | BackupAndPrepareWakeupBuffer (CpuMpData);\r |
1091 | }\r | |
1092 | \r | |
1093 | /**\r | |
1094 | Free AP reset vector buffer.\r | |
1095 | \r | |
1096 | @param[in] CpuMpData The pointer to CPU MP Data structure.\r | |
1097 | **/\r | |
1098 | VOID\r | |
1099 | FreeResetVector (\r | |
053e878b | 1100 | IN CPU_MP_DATA *CpuMpData\r |
a6b3d753 SZ |
1101 | )\r |
1102 | {\r | |
7b7508ad TL |
1103 | //\r |
1104 | // If SEV-ES is enabled, the reset area is needed for AP parking and\r | |
1105 | // and AP startup in the OS, so the reset area is reserved. Do not\r | |
1106 | // perform the restore as this will overwrite memory which has data\r | |
1107 | // needed by SEV-ES.\r | |
1108 | //\r | |
1109 | if (!CpuMpData->SevEsIsEnabled) {\r | |
1110 | RestoreWakeupBuffer (CpuMpData);\r | |
1111 | }\r | |
1112 | }\r | |
1113 | \r | |
96f5920d JF |
1114 | /**\r |
1115 | This function will be called by BSP to wakeup AP.\r | |
1116 | \r | |
1117 | @param[in] CpuMpData Pointer to CPU MP Data\r | |
1118 | @param[in] Broadcast TRUE: Send broadcast IPI to all APs\r | |
1119 | FALSE: Send IPI to AP by ApicId\r | |
1120 | @param[in] ProcessorNumber The handle number of specified processor\r | |
1121 | @param[in] Procedure The function to be invoked by AP\r | |
1122 | @param[in] ProcedureArgument The argument to be passed into AP function\r | |
cf4e79e4 | 1123 | @param[in] WakeUpDisabledAps Whether need to wake up disabled APs in broadcast mode.\r |
96f5920d JF |
1124 | **/\r |
1125 | VOID\r | |
1126 | WakeUpAP (\r | |
053e878b MK |
1127 | IN CPU_MP_DATA *CpuMpData,\r |
1128 | IN BOOLEAN Broadcast,\r | |
1129 | IN UINTN ProcessorNumber,\r | |
1130 | IN EFI_AP_PROCEDURE Procedure OPTIONAL,\r | |
1131 | IN VOID *ProcedureArgument OPTIONAL,\r | |
1132 | IN BOOLEAN WakeUpDisabledAps\r | |
96f5920d JF |
1133 | )\r |
1134 | {\r | |
053e878b MK |
1135 | volatile MP_CPU_EXCHANGE_INFO *ExchangeInfo;\r |
1136 | UINTN Index;\r | |
1137 | CPU_AP_DATA *CpuData;\r | |
1138 | BOOLEAN ResetVectorRequired;\r | |
1139 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
96f5920d JF |
1140 | \r |
1141 | CpuMpData->FinishedCount = 0;\r | |
053e878b | 1142 | ResetVectorRequired = FALSE;\r |
96f5920d | 1143 | \r |
58942277 | 1144 | if (CpuMpData->WakeUpByInitSipiSipi ||\r |
053e878b MK |
1145 | (CpuMpData->InitFlag != ApInitDone))\r |
1146 | {\r | |
96f5920d JF |
1147 | ResetVectorRequired = TRUE;\r |
1148 | AllocateResetVector (CpuMpData);\r | |
7b7508ad | 1149 | AllocateSevEsAPMemory (CpuMpData);\r |
96f5920d | 1150 | FillExchangeInfoData (CpuMpData);\r |
ffab2442 | 1151 | SaveLocalApicTimerSetting (CpuMpData);\r |
58942277 ED |
1152 | }\r |
1153 | \r | |
1154 | if (CpuMpData->ApLoopMode == ApInMwaitLoop) {\r | |
96f5920d JF |
1155 | //\r |
1156 | // Get AP target C-state each time when waking up AP,\r | |
1157 | // for it maybe updated by platform again\r | |
1158 | //\r | |
1159 | CpuMpData->ApTargetCState = PcdGet8 (PcdCpuApTargetCstate);\r | |
1160 | }\r | |
1161 | \r | |
1162 | ExchangeInfo = CpuMpData->MpCpuExchangeInfo;\r | |
1163 | \r | |
1164 | if (Broadcast) {\r | |
1165 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r | |
1166 | if (Index != CpuMpData->BspNumber) {\r | |
1167 | CpuData = &CpuMpData->CpuData[Index];\r | |
cf4e79e4 ED |
1168 | //\r |
1169 | // All AP(include disabled AP) will be woke up by INIT-SIPI-SIPI, but\r | |
e23d9c3e | 1170 | // the AP procedure will be skipped for disabled AP because AP state\r |
cf4e79e4 ED |
1171 | // is not CpuStateReady.\r |
1172 | //\r | |
053e878b | 1173 | if ((GetApState (CpuData) == CpuStateDisabled) && !WakeUpDisabledAps) {\r |
cf4e79e4 ED |
1174 | continue;\r |
1175 | }\r | |
1176 | \r | |
053e878b MK |
1177 | CpuData->ApFunction = (UINTN)Procedure;\r |
1178 | CpuData->ApFunctionArgument = (UINTN)ProcedureArgument;\r | |
96f5920d JF |
1179 | SetApState (CpuData, CpuStateReady);\r |
1180 | if (CpuMpData->InitFlag != ApInitConfig) {\r | |
053e878b | 1181 | *(UINT32 *)CpuData->StartupApSignal = WAKEUP_AP_SIGNAL;\r |
96f5920d JF |
1182 | }\r |
1183 | }\r | |
1184 | }\r | |
053e878b | 1185 | \r |
96f5920d | 1186 | if (ResetVectorRequired) {\r |
7b7508ad TL |
1187 | //\r |
1188 | // For SEV-ES, the initial AP boot address will be defined by\r | |
1189 | // PcdSevEsWorkAreaBase. The Segment/Rip must be the jump address\r | |
1190 | // from the original INIT-SIPI-SIPI.\r | |
1191 | //\r | |
1192 | if (CpuMpData->SevEsIsEnabled) {\r | |
1193 | SetSevEsJumpTable (ExchangeInfo->BufferStart);\r | |
1194 | }\r | |
1195 | \r | |
96f5920d JF |
1196 | //\r |
1197 | // Wakeup all APs\r | |
1198 | //\r | |
053e878b | 1199 | SendInitSipiSipiAllExcludingSelf ((UINT32)ExchangeInfo->BufferStart);\r |
96f5920d | 1200 | }\r |
053e878b | 1201 | \r |
c1192210 | 1202 | if (CpuMpData->InitFlag == ApInitConfig) {\r |
778832bc LE |
1203 | if (PcdGet32 (PcdCpuBootLogicalProcessorNumber) > 0) {\r |
1204 | //\r | |
1205 | // The AP enumeration algorithm below is suitable only when the\r | |
1206 | // platform can tell us the *exact* boot CPU count in advance.\r | |
1207 | //\r | |
1208 | // The wait below finishes only when the detected AP count reaches\r | |
1209 | // (PcdCpuBootLogicalProcessorNumber - 1), regardless of how long that\r | |
1210 | // takes. If at least one AP fails to check in (meaning a platform\r | |
1211 | // hardware bug), the detection hangs forever, by design. If the actual\r | |
1212 | // boot CPU count in the system is higher than\r | |
1213 | // PcdCpuBootLogicalProcessorNumber (meaning a platform\r | |
1214 | // misconfiguration), then some APs may complete initialization after\r | |
1215 | // the wait finishes, and cause undefined behavior.\r | |
1216 | //\r | |
1217 | TimedWaitForApFinish (\r | |
1218 | CpuMpData,\r | |
1219 | PcdGet32 (PcdCpuBootLogicalProcessorNumber) - 1,\r | |
1220 | MAX_UINT32 // approx. 71 minutes\r | |
1221 | );\r | |
1222 | } else {\r | |
1223 | //\r | |
1224 | // The AP enumeration algorithm below is suitable for two use cases.\r | |
1225 | //\r | |
1226 | // (1) The check-in time for an individual AP is bounded, and APs run\r | |
1227 | // through their initialization routines strongly concurrently. In\r | |
1228 | // particular, the number of concurrently running APs\r | |
1229 | // ("NumApsExecuting") is never expected to fall to zero\r | |
1230 | // *temporarily* -- it is expected to fall to zero only when all\r | |
1231 | // APs have checked-in.\r | |
1232 | //\r | |
1233 | // In this case, the platform is supposed to set\r | |
1234 | // PcdCpuApInitTimeOutInMicroSeconds to a low-ish value (just long\r | |
1235 | // enough for one AP to start initialization). The timeout will be\r | |
1236 | // reached soon, and remaining APs are collected by watching\r | |
1237 | // NumApsExecuting fall to zero. If NumApsExecuting falls to zero\r | |
1238 | // mid-process, while some APs have not completed initialization,\r | |
1239 | // the behavior is undefined.\r | |
1240 | //\r | |
1241 | // (2) The check-in time for an individual AP is unbounded, and/or APs\r | |
1242 | // may complete their initializations widely spread out. In\r | |
1243 | // particular, some APs may finish initialization before some APs\r | |
1244 | // even start.\r | |
1245 | //\r | |
1246 | // In this case, the platform is supposed to set\r | |
1247 | // PcdCpuApInitTimeOutInMicroSeconds to a high-ish value. The AP\r | |
1248 | // enumeration will always take that long (except when the boot CPU\r | |
1249 | // count happens to be maximal, that is,\r | |
1250 | // PcdCpuMaxLogicalProcessorNumber). All APs are expected to\r | |
1251 | // check-in before the timeout, and NumApsExecuting is assumed zero\r | |
1252 | // at timeout. APs that miss the time-out may cause undefined\r | |
1253 | // behavior.\r | |
1254 | //\r | |
1255 | TimedWaitForApFinish (\r | |
1256 | CpuMpData,\r | |
1257 | PcdGet32 (PcdCpuMaxLogicalProcessorNumber) - 1,\r | |
1258 | PcdGet32 (PcdCpuApInitTimeOutInMicroSeconds)\r | |
1259 | );\r | |
0594ec41 | 1260 | \r |
778832bc | 1261 | while (CpuMpData->MpCpuExchangeInfo->NumApsExecuting != 0) {\r |
053e878b | 1262 | CpuPause ();\r |
778832bc | 1263 | }\r |
0594ec41 | 1264 | }\r |
c1192210 | 1265 | } else {\r |
96f5920d JF |
1266 | //\r |
1267 | // Wait all APs waken up if this is not the 1st broadcast of SIPI\r | |
1268 | //\r | |
1269 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r | |
1270 | CpuData = &CpuMpData->CpuData[Index];\r | |
1271 | if (Index != CpuMpData->BspNumber) {\r | |
1272 | WaitApWakeup (CpuData->StartupApSignal);\r | |
1273 | }\r | |
1274 | }\r | |
1275 | }\r | |
1276 | } else {\r | |
053e878b MK |
1277 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r |
1278 | CpuData->ApFunction = (UINTN)Procedure;\r | |
1279 | CpuData->ApFunctionArgument = (UINTN)ProcedureArgument;\r | |
96f5920d JF |
1280 | SetApState (CpuData, CpuStateReady);\r |
1281 | //\r | |
1282 | // Wakeup specified AP\r | |
1283 | //\r | |
1284 | ASSERT (CpuMpData->InitFlag != ApInitConfig);\r | |
053e878b | 1285 | *(UINT32 *)CpuData->StartupApSignal = WAKEUP_AP_SIGNAL;\r |
96f5920d | 1286 | if (ResetVectorRequired) {\r |
053e878b | 1287 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r |
7b7508ad TL |
1288 | \r |
1289 | //\r | |
1290 | // For SEV-ES, the initial AP boot address will be defined by\r | |
1291 | // PcdSevEsWorkAreaBase. The Segment/Rip must be the jump address\r | |
1292 | // from the original INIT-SIPI-SIPI.\r | |
1293 | //\r | |
1294 | if (CpuMpData->SevEsIsEnabled) {\r | |
1295 | SetSevEsJumpTable (ExchangeInfo->BufferStart);\r | |
1296 | }\r | |
1297 | \r | |
96f5920d | 1298 | SendInitSipiSipi (\r |
31a1e4da | 1299 | CpuInfoInHob[ProcessorNumber].ApicId,\r |
053e878b | 1300 | (UINT32)ExchangeInfo->BufferStart\r |
96f5920d JF |
1301 | );\r |
1302 | }\r | |
053e878b | 1303 | \r |
96f5920d JF |
1304 | //\r |
1305 | // Wait specified AP waken up\r | |
1306 | //\r | |
1307 | WaitApWakeup (CpuData->StartupApSignal);\r | |
1308 | }\r | |
1309 | \r | |
1310 | if (ResetVectorRequired) {\r | |
1311 | FreeResetVector (CpuMpData);\r | |
1312 | }\r | |
58942277 ED |
1313 | \r |
1314 | //\r | |
1315 | // After one round of Wakeup Ap actions, need to re-sync ApLoopMode with\r | |
1316 | // WakeUpByInitSipiSipi flag. WakeUpByInitSipiSipi flag maybe changed by\r | |
1317 | // S3SmmInitDone Ppi.\r | |
1318 | //\r | |
1319 | CpuMpData->WakeUpByInitSipiSipi = (CpuMpData->ApLoopMode == ApInHltLoop);\r | |
96f5920d JF |
1320 | }\r |
1321 | \r | |
08085f08 JF |
1322 | /**\r |
1323 | Calculate timeout value and return the current performance counter value.\r | |
1324 | \r | |
1325 | Calculate the number of performance counter ticks required for a timeout.\r | |
1326 | If TimeoutInMicroseconds is 0, return value is also 0, which is recognized\r | |
1327 | as infinity.\r | |
1328 | \r | |
1329 | @param[in] TimeoutInMicroseconds Timeout value in microseconds.\r | |
1330 | @param[out] CurrentTime Returns the current value of the performance counter.\r | |
1331 | \r | |
1332 | @return Expected time stamp counter for timeout.\r | |
1333 | If TimeoutInMicroseconds is 0, return value is also 0, which is recognized\r | |
1334 | as infinity.\r | |
1335 | \r | |
1336 | **/\r | |
1337 | UINT64\r | |
1338 | CalculateTimeout (\r | |
1339 | IN UINTN TimeoutInMicroseconds,\r | |
1340 | OUT UINT64 *CurrentTime\r | |
1341 | )\r | |
1342 | {\r | |
053e878b MK |
1343 | UINT64 TimeoutInSeconds;\r |
1344 | UINT64 TimestampCounterFreq;\r | |
48cfb7c0 | 1345 | \r |
08085f08 JF |
1346 | //\r |
1347 | // Read the current value of the performance counter\r | |
1348 | //\r | |
1349 | *CurrentTime = GetPerformanceCounter ();\r | |
1350 | \r | |
1351 | //\r | |
1352 | // If TimeoutInMicroseconds is 0, return value is also 0, which is recognized\r | |
1353 | // as infinity.\r | |
1354 | //\r | |
1355 | if (TimeoutInMicroseconds == 0) {\r | |
1356 | return 0;\r | |
1357 | }\r | |
1358 | \r | |
1359 | //\r | |
1360 | // GetPerformanceCounterProperties () returns the timestamp counter's frequency\r | |
7367cc6c | 1361 | // in Hz.\r |
48cfb7c0 ED |
1362 | //\r |
1363 | TimestampCounterFreq = GetPerformanceCounterProperties (NULL, NULL);\r | |
1364 | \r | |
08085f08 | 1365 | //\r |
48cfb7c0 ED |
1366 | // Check the potential overflow before calculate the number of ticks for the timeout value.\r |
1367 | //\r | |
1368 | if (DivU64x64Remainder (MAX_UINT64, TimeoutInMicroseconds, NULL) < TimestampCounterFreq) {\r | |
1369 | //\r | |
1370 | // Convert microseconds into seconds if direct multiplication overflows\r | |
1371 | //\r | |
1372 | TimeoutInSeconds = DivU64x32 (TimeoutInMicroseconds, 1000000);\r | |
1373 | //\r | |
1374 | // Assertion if the final tick count exceeds MAX_UINT64\r | |
1375 | //\r | |
1376 | ASSERT (DivU64x64Remainder (MAX_UINT64, TimeoutInSeconds, NULL) >= TimestampCounterFreq);\r | |
1377 | return MultU64x64 (TimestampCounterFreq, TimeoutInSeconds);\r | |
1378 | } else {\r | |
1379 | //\r | |
1380 | // No overflow case, multiply the return value with TimeoutInMicroseconds and then divide\r | |
1381 | // it by 1,000,000, to get the number of ticks for the timeout value.\r | |
1382 | //\r | |
1383 | return DivU64x32 (\r | |
1384 | MultU64x64 (\r | |
1385 | TimestampCounterFreq,\r | |
1386 | TimeoutInMicroseconds\r | |
1387 | ),\r | |
1388 | 1000000\r | |
1389 | );\r | |
1390 | }\r | |
08085f08 JF |
1391 | }\r |
1392 | \r | |
1393 | /**\r | |
1394 | Checks whether timeout expires.\r | |
1395 | \r | |
1396 | Check whether the number of elapsed performance counter ticks required for\r | |
1397 | a timeout condition has been reached.\r | |
1398 | If Timeout is zero, which means infinity, return value is always FALSE.\r | |
1399 | \r | |
1400 | @param[in, out] PreviousTime On input, the value of the performance counter\r | |
1401 | when it was last read.\r | |
1402 | On output, the current value of the performance\r | |
1403 | counter\r | |
1404 | @param[in] TotalTime The total amount of elapsed time in performance\r | |
1405 | counter ticks.\r | |
1406 | @param[in] Timeout The number of performance counter ticks required\r | |
1407 | to reach a timeout condition.\r | |
1408 | \r | |
1409 | @retval TRUE A timeout condition has been reached.\r | |
1410 | @retval FALSE A timeout condition has not been reached.\r | |
1411 | \r | |
1412 | **/\r | |
1413 | BOOLEAN\r | |
1414 | CheckTimeout (\r | |
1415 | IN OUT UINT64 *PreviousTime,\r | |
1416 | IN UINT64 *TotalTime,\r | |
1417 | IN UINT64 Timeout\r | |
1418 | )\r | |
1419 | {\r | |
1420 | UINT64 Start;\r | |
1421 | UINT64 End;\r | |
1422 | UINT64 CurrentTime;\r | |
1423 | INT64 Delta;\r | |
1424 | INT64 Cycle;\r | |
1425 | \r | |
1426 | if (Timeout == 0) {\r | |
1427 | return FALSE;\r | |
1428 | }\r | |
053e878b | 1429 | \r |
08085f08 JF |
1430 | GetPerformanceCounterProperties (&Start, &End);\r |
1431 | Cycle = End - Start;\r | |
1432 | if (Cycle < 0) {\r | |
1433 | Cycle = -Cycle;\r | |
1434 | }\r | |
053e878b | 1435 | \r |
08085f08 | 1436 | Cycle++;\r |
053e878b MK |
1437 | CurrentTime = GetPerformanceCounter ();\r |
1438 | Delta = (INT64)(CurrentTime - *PreviousTime);\r | |
08085f08 JF |
1439 | if (Start > End) {\r |
1440 | Delta = -Delta;\r | |
1441 | }\r | |
053e878b | 1442 | \r |
08085f08 JF |
1443 | if (Delta < 0) {\r |
1444 | Delta += Cycle;\r | |
1445 | }\r | |
053e878b MK |
1446 | \r |
1447 | *TotalTime += Delta;\r | |
08085f08 JF |
1448 | *PreviousTime = CurrentTime;\r |
1449 | if (*TotalTime > Timeout) {\r | |
1450 | return TRUE;\r | |
1451 | }\r | |
053e878b | 1452 | \r |
08085f08 JF |
1453 | return FALSE;\r |
1454 | }\r | |
1455 | \r | |
6e1987f1 LE |
1456 | /**\r |
1457 | Helper function that waits until the finished AP count reaches the specified\r | |
1458 | limit, or the specified timeout elapses (whichever comes first).\r | |
1459 | \r | |
1460 | @param[in] CpuMpData Pointer to CPU MP Data.\r | |
1461 | @param[in] FinishedApLimit The number of finished APs to wait for.\r | |
1462 | @param[in] TimeLimit The number of microseconds to wait for.\r | |
1463 | **/\r | |
1464 | VOID\r | |
1465 | TimedWaitForApFinish (\r | |
053e878b MK |
1466 | IN CPU_MP_DATA *CpuMpData,\r |
1467 | IN UINT32 FinishedApLimit,\r | |
1468 | IN UINT32 TimeLimit\r | |
6e1987f1 LE |
1469 | )\r |
1470 | {\r | |
1471 | //\r | |
1472 | // CalculateTimeout() and CheckTimeout() consider a TimeLimit of 0\r | |
1473 | // "infinity", so check for (TimeLimit == 0) explicitly.\r | |
1474 | //\r | |
1475 | if (TimeLimit == 0) {\r | |
1476 | return;\r | |
1477 | }\r | |
1478 | \r | |
053e878b | 1479 | CpuMpData->TotalTime = 0;\r |
6e1987f1 LE |
1480 | CpuMpData->ExpectedTime = CalculateTimeout (\r |
1481 | TimeLimit,\r | |
1482 | &CpuMpData->CurrentTime\r | |
1483 | );\r | |
1484 | while (CpuMpData->FinishedCount < FinishedApLimit &&\r | |
1485 | !CheckTimeout (\r | |
1486 | &CpuMpData->CurrentTime,\r | |
1487 | &CpuMpData->TotalTime,\r | |
1488 | CpuMpData->ExpectedTime\r | |
053e878b MK |
1489 | ))\r |
1490 | {\r | |
6e1987f1 LE |
1491 | CpuPause ();\r |
1492 | }\r | |
1493 | \r | |
1494 | if (CpuMpData->FinishedCount >= FinishedApLimit) {\r | |
1495 | DEBUG ((\r | |
1496 | DEBUG_VERBOSE,\r | |
1497 | "%a: reached FinishedApLimit=%u in %Lu microseconds\n",\r | |
1498 | __FUNCTION__,\r | |
1499 | FinishedApLimit,\r | |
1500 | DivU64x64Remainder (\r | |
1501 | MultU64x32 (CpuMpData->TotalTime, 1000000),\r | |
1502 | GetPerformanceCounterProperties (NULL, NULL),\r | |
1503 | NULL\r | |
1504 | )\r | |
1505 | ));\r | |
1506 | }\r | |
1507 | }\r | |
1508 | \r | |
08085f08 JF |
1509 | /**\r |
1510 | Reset an AP to Idle state.\r | |
1511 | \r | |
1512 | Any task being executed by the AP will be aborted and the AP\r | |
1513 | will be waiting for a new task in Wait-For-SIPI state.\r | |
1514 | \r | |
1515 | @param[in] ProcessorNumber The handle number of processor.\r | |
1516 | **/\r | |
1517 | VOID\r | |
1518 | ResetProcessorToIdleState (\r | |
053e878b | 1519 | IN UINTN ProcessorNumber\r |
08085f08 JF |
1520 | )\r |
1521 | {\r | |
053e878b | 1522 | CPU_MP_DATA *CpuMpData;\r |
08085f08 JF |
1523 | \r |
1524 | CpuMpData = GetCpuMpData ();\r | |
1525 | \r | |
cb33bde4 | 1526 | CpuMpData->InitFlag = ApInitReconfig;\r |
cf4e79e4 | 1527 | WakeUpAP (CpuMpData, FALSE, ProcessorNumber, NULL, NULL, TRUE);\r |
cb33bde4 JF |
1528 | while (CpuMpData->FinishedCount < 1) {\r |
1529 | CpuPause ();\r | |
1530 | }\r | |
053e878b | 1531 | \r |
cb33bde4 | 1532 | CpuMpData->InitFlag = ApInitDone;\r |
08085f08 JF |
1533 | \r |
1534 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateIdle);\r | |
1535 | }\r | |
1536 | \r | |
1537 | /**\r | |
1538 | Searches for the next waiting AP.\r | |
1539 | \r | |
1540 | Search for the next AP that is put in waiting state by single-threaded StartupAllAPs().\r | |
1541 | \r | |
1542 | @param[out] NextProcessorNumber Pointer to the processor number of the next waiting AP.\r | |
1543 | \r | |
1544 | @retval EFI_SUCCESS The next waiting AP has been found.\r | |
1545 | @retval EFI_NOT_FOUND No waiting AP exists.\r | |
1546 | \r | |
1547 | **/\r | |
1548 | EFI_STATUS\r | |
1549 | GetNextWaitingProcessorNumber (\r | |
053e878b | 1550 | OUT UINTN *NextProcessorNumber\r |
08085f08 JF |
1551 | )\r |
1552 | {\r | |
053e878b MK |
1553 | UINTN ProcessorNumber;\r |
1554 | CPU_MP_DATA *CpuMpData;\r | |
08085f08 JF |
1555 | \r |
1556 | CpuMpData = GetCpuMpData ();\r | |
1557 | \r | |
1558 | for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r | |
1559 | if (CpuMpData->CpuData[ProcessorNumber].Waiting) {\r | |
1560 | *NextProcessorNumber = ProcessorNumber;\r | |
1561 | return EFI_SUCCESS;\r | |
1562 | }\r | |
1563 | }\r | |
1564 | \r | |
1565 | return EFI_NOT_FOUND;\r | |
1566 | }\r | |
1567 | \r | |
1568 | /** Checks status of specified AP.\r | |
1569 | \r | |
1570 | This function checks whether the specified AP has finished the task assigned\r | |
1571 | by StartupThisAP(), and whether timeout expires.\r | |
1572 | \r | |
1573 | @param[in] ProcessorNumber The handle number of processor.\r | |
1574 | \r | |
1575 | @retval EFI_SUCCESS Specified AP has finished task assigned by StartupThisAPs().\r | |
1576 | @retval EFI_TIMEOUT The timeout expires.\r | |
1577 | @retval EFI_NOT_READY Specified AP has not finished task and timeout has not expired.\r | |
1578 | **/\r | |
1579 | EFI_STATUS\r | |
1580 | CheckThisAP (\r | |
053e878b | 1581 | IN UINTN ProcessorNumber\r |
08085f08 JF |
1582 | )\r |
1583 | {\r | |
053e878b MK |
1584 | CPU_MP_DATA *CpuMpData;\r |
1585 | CPU_AP_DATA *CpuData;\r | |
08085f08 JF |
1586 | \r |
1587 | CpuMpData = GetCpuMpData ();\r | |
1588 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r | |
1589 | \r | |
1590 | //\r | |
2a5997f8 | 1591 | // Check the CPU state of AP. If it is CpuStateIdle, then the AP has finished its task.\r |
08085f08 | 1592 | // Only BSP and corresponding AP access this unit of CPU Data. This means the AP will not modify the\r |
2a5997f8 | 1593 | // value of state after setting the it to CpuStateIdle, so BSP can safely make use of its value.\r |
08085f08 JF |
1594 | //\r |
1595 | //\r | |
1596 | // If the AP finishes for StartupThisAP(), return EFI_SUCCESS.\r | |
1597 | //\r | |
053e878b | 1598 | if (GetApState (CpuData) == CpuStateFinished) {\r |
08085f08 JF |
1599 | if (CpuData->Finished != NULL) {\r |
1600 | *(CpuData->Finished) = TRUE;\r | |
1601 | }\r | |
053e878b | 1602 | \r |
e048ce88 | 1603 | SetApState (CpuData, CpuStateIdle);\r |
08085f08 JF |
1604 | return EFI_SUCCESS;\r |
1605 | } else {\r | |
1606 | //\r | |
1607 | // If timeout expires for StartupThisAP(), report timeout.\r | |
1608 | //\r | |
1609 | if (CheckTimeout (&CpuData->CurrentTime, &CpuData->TotalTime, CpuData->ExpectedTime)) {\r | |
1610 | if (CpuData->Finished != NULL) {\r | |
1611 | *(CpuData->Finished) = FALSE;\r | |
1612 | }\r | |
053e878b | 1613 | \r |
08085f08 JF |
1614 | //\r |
1615 | // Reset failed AP to idle state\r | |
1616 | //\r | |
1617 | ResetProcessorToIdleState (ProcessorNumber);\r | |
1618 | \r | |
1619 | return EFI_TIMEOUT;\r | |
1620 | }\r | |
1621 | }\r | |
053e878b | 1622 | \r |
08085f08 JF |
1623 | return EFI_NOT_READY;\r |
1624 | }\r | |
1625 | \r | |
1626 | /**\r | |
1627 | Checks status of all APs.\r | |
1628 | \r | |
1629 | This function checks whether all APs have finished task assigned by StartupAllAPs(),\r | |
1630 | and whether timeout expires.\r | |
1631 | \r | |
1632 | @retval EFI_SUCCESS All APs have finished task assigned by StartupAllAPs().\r | |
1633 | @retval EFI_TIMEOUT The timeout expires.\r | |
1634 | @retval EFI_NOT_READY APs have not finished task and timeout has not expired.\r | |
1635 | **/\r | |
1636 | EFI_STATUS\r | |
1637 | CheckAllAPs (\r | |
1638 | VOID\r | |
1639 | )\r | |
1640 | {\r | |
053e878b MK |
1641 | UINTN ProcessorNumber;\r |
1642 | UINTN NextProcessorNumber;\r | |
1643 | UINTN ListIndex;\r | |
1644 | EFI_STATUS Status;\r | |
1645 | CPU_MP_DATA *CpuMpData;\r | |
1646 | CPU_AP_DATA *CpuData;\r | |
08085f08 JF |
1647 | \r |
1648 | CpuMpData = GetCpuMpData ();\r | |
1649 | \r | |
1650 | NextProcessorNumber = 0;\r | |
1651 | \r | |
1652 | //\r | |
1653 | // Go through all APs that are responsible for the StartupAllAPs().\r | |
1654 | //\r | |
1655 | for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r | |
1656 | if (!CpuMpData->CpuData[ProcessorNumber].Waiting) {\r | |
1657 | continue;\r | |
1658 | }\r | |
1659 | \r | |
1660 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r | |
1661 | //\r | |
2a5997f8 | 1662 | // Check the CPU state of AP. If it is CpuStateIdle, then the AP has finished its task.\r |
08085f08 | 1663 | // Only BSP and corresponding AP access this unit of CPU Data. This means the AP will not modify the\r |
2a5997f8 | 1664 | // value of state after setting the it to CpuStateIdle, so BSP can safely make use of its value.\r |
08085f08 | 1665 | //\r |
053e878b MK |
1666 | if (GetApState (CpuData) == CpuStateFinished) {\r |
1667 | CpuMpData->RunningCount--;\r | |
08085f08 | 1668 | CpuMpData->CpuData[ProcessorNumber].Waiting = FALSE;\r |
053e878b | 1669 | SetApState (CpuData, CpuStateIdle);\r |
08085f08 JF |
1670 | \r |
1671 | //\r | |
1672 | // If in Single Thread mode, then search for the next waiting AP for execution.\r | |
1673 | //\r | |
1674 | if (CpuMpData->SingleThread) {\r | |
1675 | Status = GetNextWaitingProcessorNumber (&NextProcessorNumber);\r | |
1676 | \r | |
1677 | if (!EFI_ERROR (Status)) {\r | |
1678 | WakeUpAP (\r | |
1679 | CpuMpData,\r | |
1680 | FALSE,\r | |
053e878b | 1681 | (UINT32)NextProcessorNumber,\r |
08085f08 | 1682 | CpuMpData->Procedure,\r |
cf4e79e4 ED |
1683 | CpuMpData->ProcArguments,\r |
1684 | TRUE\r | |
08085f08 | 1685 | );\r |
053e878b | 1686 | }\r |
08085f08 JF |
1687 | }\r |
1688 | }\r | |
1689 | }\r | |
1690 | \r | |
1691 | //\r | |
1692 | // If all APs finish, return EFI_SUCCESS.\r | |
1693 | //\r | |
2da3e96c | 1694 | if (CpuMpData->RunningCount == 0) {\r |
08085f08 JF |
1695 | return EFI_SUCCESS;\r |
1696 | }\r | |
1697 | \r | |
1698 | //\r | |
1699 | // If timeout expires, report timeout.\r | |
1700 | //\r | |
1701 | if (CheckTimeout (\r | |
053e878b MK |
1702 | &CpuMpData->CurrentTime,\r |
1703 | &CpuMpData->TotalTime,\r | |
1704 | CpuMpData->ExpectedTime\r | |
1705 | )\r | |
1706 | )\r | |
1707 | {\r | |
08085f08 JF |
1708 | //\r |
1709 | // If FailedCpuList is not NULL, record all failed APs in it.\r | |
1710 | //\r | |
1711 | if (CpuMpData->FailedCpuList != NULL) {\r | |
1712 | *CpuMpData->FailedCpuList =\r | |
053e878b | 1713 | AllocatePool ((CpuMpData->RunningCount + 1) * sizeof (UINTN));\r |
08085f08 JF |
1714 | ASSERT (*CpuMpData->FailedCpuList != NULL);\r |
1715 | }\r | |
053e878b | 1716 | \r |
08085f08 JF |
1717 | ListIndex = 0;\r |
1718 | \r | |
1719 | for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r | |
1720 | //\r | |
1721 | // Check whether this processor is responsible for StartupAllAPs().\r | |
1722 | //\r | |
1723 | if (CpuMpData->CpuData[ProcessorNumber].Waiting) {\r | |
1724 | //\r | |
1725 | // Reset failed APs to idle state\r | |
1726 | //\r | |
1727 | ResetProcessorToIdleState (ProcessorNumber);\r | |
1728 | CpuMpData->CpuData[ProcessorNumber].Waiting = FALSE;\r | |
1729 | if (CpuMpData->FailedCpuList != NULL) {\r | |
1730 | (*CpuMpData->FailedCpuList)[ListIndex++] = ProcessorNumber;\r | |
1731 | }\r | |
1732 | }\r | |
1733 | }\r | |
053e878b | 1734 | \r |
08085f08 JF |
1735 | if (CpuMpData->FailedCpuList != NULL) {\r |
1736 | (*CpuMpData->FailedCpuList)[ListIndex] = END_OF_CPU_LIST;\r | |
1737 | }\r | |
053e878b | 1738 | \r |
08085f08 JF |
1739 | return EFI_TIMEOUT;\r |
1740 | }\r | |
053e878b | 1741 | \r |
08085f08 JF |
1742 | return EFI_NOT_READY;\r |
1743 | }\r | |
1744 | \r | |
3e8ad6bd JF |
1745 | /**\r |
1746 | MP Initialize Library initialization.\r | |
1747 | \r | |
1748 | This service will allocate AP reset vector and wakeup all APs to do APs\r | |
1749 | initialization.\r | |
1750 | \r | |
1751 | This service must be invoked before all other MP Initialize Library\r | |
1752 | service are invoked.\r | |
1753 | \r | |
1754 | @retval EFI_SUCCESS MP initialization succeeds.\r | |
1755 | @retval Others MP initialization fails.\r | |
1756 | \r | |
1757 | **/\r | |
1758 | EFI_STATUS\r | |
1759 | EFIAPI\r | |
1760 | MpInitLibInitialize (\r | |
1761 | VOID\r | |
1762 | )\r | |
1763 | {\r | |
6a2ee2bb JF |
1764 | CPU_MP_DATA *OldCpuMpData;\r |
1765 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
e59f8f6b JF |
1766 | UINT32 MaxLogicalProcessorNumber;\r |
1767 | UINT32 ApStackSize;\r | |
f7f85d83 | 1768 | MP_ASSEMBLY_ADDRESS_MAP AddressMap;\r |
c563077a | 1769 | CPU_VOLATILE_REGISTERS VolatileRegisters;\r |
e59f8f6b | 1770 | UINTN BufferSize;\r |
9ebcf0f4 | 1771 | UINT32 MonitorFilterSize;\r |
e59f8f6b JF |
1772 | VOID *MpBuffer;\r |
1773 | UINTN Buffer;\r | |
1774 | CPU_MP_DATA *CpuMpData;\r | |
9ebcf0f4 | 1775 | UINT8 ApLoopMode;\r |
e59f8f6b | 1776 | UINT8 *MonitorBuffer;\r |
03a1a925 | 1777 | UINTN Index;\r |
f7f85d83 | 1778 | UINTN ApResetVectorSize;\r |
e59f8f6b | 1779 | UINTN BackupBufferAddr;\r |
c563077a | 1780 | UINTN ApIdtBase;\r |
6a2ee2bb JF |
1781 | \r |
1782 | OldCpuMpData = GetCpuMpDataFromGuidedHob ();\r | |
1783 | if (OldCpuMpData == NULL) {\r | |
053e878b | 1784 | MaxLogicalProcessorNumber = PcdGet32 (PcdCpuMaxLogicalProcessorNumber);\r |
6a2ee2bb JF |
1785 | } else {\r |
1786 | MaxLogicalProcessorNumber = OldCpuMpData->CpuCount;\r | |
1787 | }\r | |
053e878b | 1788 | \r |
14e8137c | 1789 | ASSERT (MaxLogicalProcessorNumber != 0);\r |
f7f85d83 JF |
1790 | \r |
1791 | AsmGetAddressMap (&AddressMap);\r | |
7b7508ad | 1792 | ApResetVectorSize = GetApResetVectorSize (&AddressMap);\r |
053e878b MK |
1793 | ApStackSize = PcdGet32 (PcdCpuApStackSize);\r |
1794 | ApLoopMode = GetApLoopMode (&MonitorFilterSize);\r | |
9ebcf0f4 | 1795 | \r |
c563077a | 1796 | //\r |
e09b6b59 | 1797 | // Save BSP's Control registers for APs.\r |
c563077a RN |
1798 | //\r |
1799 | SaveVolatileRegisters (&VolatileRegisters);\r | |
1800 | \r | |
e59f8f6b JF |
1801 | BufferSize = ApStackSize * MaxLogicalProcessorNumber;\r |
1802 | BufferSize += MonitorFilterSize * MaxLogicalProcessorNumber;\r | |
e59f8f6b | 1803 | BufferSize += ApResetVectorSize;\r |
c563077a RN |
1804 | BufferSize = ALIGN_VALUE (BufferSize, 8);\r |
1805 | BufferSize += VolatileRegisters.Idtr.Limit + 1;\r | |
1806 | BufferSize += sizeof (CPU_MP_DATA);\r | |
e59f8f6b JF |
1807 | BufferSize += (sizeof (CPU_AP_DATA) + sizeof (CPU_INFO_IN_HOB))* MaxLogicalProcessorNumber;\r |
1808 | MpBuffer = AllocatePages (EFI_SIZE_TO_PAGES (BufferSize));\r | |
1809 | ASSERT (MpBuffer != NULL);\r | |
1810 | ZeroMem (MpBuffer, BufferSize);\r | |
053e878b | 1811 | Buffer = (UINTN)MpBuffer;\r |
e59f8f6b | 1812 | \r |
c563077a RN |
1813 | //\r |
1814 | // The layout of the Buffer is as below:\r | |
1815 | //\r | |
1816 | // +--------------------+ <-- Buffer\r | |
1817 | // AP Stacks (N)\r | |
1818 | // +--------------------+ <-- MonitorBuffer\r | |
1819 | // AP Monitor Filters (N)\r | |
1820 | // +--------------------+ <-- BackupBufferAddr (CpuMpData->BackupBuffer)\r | |
1821 | // Backup Buffer\r | |
1822 | // +--------------------+\r | |
1823 | // Padding\r | |
1824 | // +--------------------+ <-- ApIdtBase (8-byte boundary)\r | |
1825 | // AP IDT All APs share one separate IDT. So AP can get address of CPU_MP_DATA from IDT Base.\r | |
1826 | // +--------------------+ <-- CpuMpData\r | |
1827 | // CPU_MP_DATA\r | |
1828 | // +--------------------+ <-- CpuMpData->CpuData\r | |
1829 | // CPU_AP_DATA (N)\r | |
1830 | // +--------------------+ <-- CpuMpData->CpuInfoInHob\r | |
1831 | // CPU_INFO_IN_HOB (N)\r | |
1832 | // +--------------------+\r | |
1833 | //\r | |
053e878b MK |
1834 | MonitorBuffer = (UINT8 *)(Buffer + ApStackSize * MaxLogicalProcessorNumber);\r |
1835 | BackupBufferAddr = (UINTN)MonitorBuffer + MonitorFilterSize * MaxLogicalProcessorNumber;\r | |
1836 | ApIdtBase = ALIGN_VALUE (BackupBufferAddr + ApResetVectorSize, 8);\r | |
1837 | CpuMpData = (CPU_MP_DATA *)(ApIdtBase + VolatileRegisters.Idtr.Limit + 1);\r | |
e59f8f6b JF |
1838 | CpuMpData->Buffer = Buffer;\r |
1839 | CpuMpData->CpuApStackSize = ApStackSize;\r | |
1840 | CpuMpData->BackupBuffer = BackupBufferAddr;\r | |
1841 | CpuMpData->BackupBufferSize = ApResetVectorSize;\r | |
053e878b | 1842 | CpuMpData->WakeupBuffer = (UINTN)-1;\r |
e59f8f6b JF |
1843 | CpuMpData->CpuCount = 1;\r |
1844 | CpuMpData->BspNumber = 0;\r | |
1845 | CpuMpData->WaitEvent = NULL;\r | |
41be0da5 | 1846 | CpuMpData->SwitchBspFlag = FALSE;\r |
053e878b MK |
1847 | CpuMpData->CpuData = (CPU_AP_DATA *)(CpuMpData + 1);\r |
1848 | CpuMpData->CpuInfoInHob = (UINT64)(UINTN)(CpuMpData->CpuData + MaxLogicalProcessorNumber);\r | |
1849 | InitializeSpinLock (&CpuMpData->MpLock);\r | |
b95908e0 | 1850 | CpuMpData->SevEsIsEnabled = ConfidentialComputingGuestHas (CCAttrAmdSevEs);\r |
053e878b | 1851 | CpuMpData->SevEsAPBuffer = (UINTN)-1;\r |
7b7508ad | 1852 | CpuMpData->GhcbBase = PcdGet64 (PcdGhcbBase);\r |
c563077a RN |
1853 | \r |
1854 | //\r | |
1855 | // Make sure no memory usage outside of the allocated buffer.\r | |
e59f8f6b | 1856 | //\r |
053e878b MK |
1857 | ASSERT (\r |
1858 | (CpuMpData->CpuInfoInHob + sizeof (CPU_INFO_IN_HOB) * MaxLogicalProcessorNumber) ==\r | |
1859 | Buffer + BufferSize\r | |
1860 | );\r | |
c563077a RN |
1861 | \r |
1862 | //\r | |
1863 | // Duplicate BSP's IDT to APs.\r | |
1864 | // All APs share one separate IDT. So AP can get the address of CpuMpData by using IDTR.BASE + IDTR.LIMIT + 1\r | |
68cb9330 | 1865 | //\r |
c563077a RN |
1866 | CopyMem ((VOID *)ApIdtBase, (VOID *)VolatileRegisters.Idtr.Base, VolatileRegisters.Idtr.Limit + 1);\r |
1867 | VolatileRegisters.Idtr.Base = ApIdtBase;\r | |
e09b6b59 JW |
1868 | //\r |
1869 | // Don't pass BSP's TR to APs to avoid AP init failure.\r | |
1870 | //\r | |
1871 | VolatileRegisters.Tr = 0;\r | |
c563077a | 1872 | CopyMem (&CpuMpData->CpuData[0].VolatileRegisters, &VolatileRegisters, sizeof (VolatileRegisters));\r |
68cb9330 | 1873 | //\r |
03a1a925 JF |
1874 | // Set BSP basic information\r |
1875 | //\r | |
f2655dcf | 1876 | InitializeApData (CpuMpData, 0, 0, CpuMpData->Buffer + ApStackSize);\r |
03a1a925 | 1877 | //\r |
e59f8f6b JF |
1878 | // Save assembly code information\r |
1879 | //\r | |
1880 | CopyMem (&CpuMpData->AddressMap, &AddressMap, sizeof (MP_ASSEMBLY_ADDRESS_MAP));\r | |
1881 | //\r | |
1882 | // Finally set AP loop mode\r | |
1883 | //\r | |
1884 | CpuMpData->ApLoopMode = ApLoopMode;\r | |
1885 | DEBUG ((DEBUG_INFO, "AP Loop Mode is %d\n", CpuMpData->ApLoopMode));\r | |
58942277 ED |
1886 | \r |
1887 | CpuMpData->WakeUpByInitSipiSipi = (CpuMpData->ApLoopMode == ApInHltLoop);\r | |
1888 | \r | |
e59f8f6b | 1889 | //\r |
03a1a925 JF |
1890 | // Set up APs wakeup signal buffer\r |
1891 | //\r | |
1892 | for (Index = 0; Index < MaxLogicalProcessorNumber; Index++) {\r | |
1893 | CpuMpData->CpuData[Index].StartupApSignal =\r | |
1894 | (UINT32 *)(MonitorBuffer + MonitorFilterSize * Index);\r | |
1895 | }\r | |
053e878b | 1896 | \r |
94f63c76 | 1897 | //\r |
9d64a9fd JF |
1898 | // Enable the local APIC for Virtual Wire Mode.\r |
1899 | //\r | |
1900 | ProgramVirtualWireMode ();\r | |
e59f8f6b | 1901 | \r |
6a2ee2bb | 1902 | if (OldCpuMpData == NULL) {\r |
14e8137c JF |
1903 | if (MaxLogicalProcessorNumber > 1) {\r |
1904 | //\r | |
1905 | // Wakeup all APs and calculate the processor count in system\r | |
1906 | //\r | |
1907 | CollectProcessorCount (CpuMpData);\r | |
1908 | }\r | |
6a2ee2bb JF |
1909 | } else {\r |
1910 | //\r | |
1911 | // APs have been wakeup before, just get the CPU Information\r | |
1912 | // from HOB\r | |
1913 | //\r | |
7b7508ad | 1914 | OldCpuMpData->NewCpuMpData = CpuMpData;\r |
053e878b MK |
1915 | CpuMpData->CpuCount = OldCpuMpData->CpuCount;\r |
1916 | CpuMpData->BspNumber = OldCpuMpData->BspNumber;\r | |
1917 | CpuMpData->CpuInfoInHob = OldCpuMpData->CpuInfoInHob;\r | |
1918 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r | |
6a2ee2bb | 1919 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r |
053e878b MK |
1920 | InitializeSpinLock (&CpuMpData->CpuData[Index].ApLock);\r |
1921 | CpuMpData->CpuData[Index].CpuHealthy = (CpuInfoInHob[Index].Health == 0) ? TRUE : FALSE;\r | |
6a2ee2bb | 1922 | CpuMpData->CpuData[Index].ApFunction = 0;\r |
6a2ee2bb | 1923 | }\r |
d786a172 HW |
1924 | }\r |
1925 | \r | |
348a34d9 HW |
1926 | if (!GetMicrocodePatchInfoFromHob (\r |
1927 | &CpuMpData->MicrocodePatchAddress,\r | |
1928 | &CpuMpData->MicrocodePatchRegionSize\r | |
053e878b MK |
1929 | ))\r |
1930 | {\r | |
348a34d9 HW |
1931 | //\r |
1932 | // The microcode patch information cache HOB does not exist, which means\r | |
1933 | // the microcode patches data has not been loaded into memory yet\r | |
1934 | //\r | |
1935 | ShadowMicrocodeUpdatePatch (CpuMpData);\r | |
1936 | }\r | |
1937 | \r | |
d786a172 HW |
1938 | //\r |
1939 | // Detect and apply Microcode on BSP\r | |
1940 | //\r | |
e1ed5573 | 1941 | MicrocodeDetect (CpuMpData, CpuMpData->BspNumber);\r |
d786a172 HW |
1942 | //\r |
1943 | // Store BSP's MTRR setting\r | |
1944 | //\r | |
1945 | MtrrGetAllMtrrs (&CpuMpData->MtrrTable);\r | |
1946 | \r | |
1947 | //\r | |
1948 | // Wakeup APs to do some AP initialize sync (Microcode & MTRR)\r | |
1949 | //\r | |
1950 | if (CpuMpData->CpuCount > 1) {\r | |
f07fb43b ED |
1951 | if (OldCpuMpData != NULL) {\r |
1952 | //\r | |
1953 | // Only needs to use this flag for DXE phase to update the wake up\r | |
1954 | // buffer. Wakeup buffer allocated in PEI phase is no longer valid\r | |
1955 | // in DXE.\r | |
1956 | //\r | |
1957 | CpuMpData->InitFlag = ApInitReconfig;\r | |
1958 | }\r | |
053e878b | 1959 | \r |
d786a172 | 1960 | WakeUpAP (CpuMpData, TRUE, 0, ApInitializeSync, CpuMpData, TRUE);\r |
18fcb375 HW |
1961 | //\r |
1962 | // Wait for all APs finished initialization\r | |
1963 | //\r | |
d786a172 HW |
1964 | while (CpuMpData->FinishedCount < (CpuMpData->CpuCount - 1)) {\r |
1965 | CpuPause ();\r | |
1966 | }\r | |
053e878b | 1967 | \r |
f07fb43b ED |
1968 | if (OldCpuMpData != NULL) {\r |
1969 | CpuMpData->InitFlag = ApInitDone;\r | |
1970 | }\r | |
053e878b | 1971 | \r |
d786a172 HW |
1972 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r |
1973 | SetApState (&CpuMpData->CpuData[Index], CpuStateIdle);\r | |
6a2ee2bb JF |
1974 | }\r |
1975 | }\r | |
93ca4c0f | 1976 | \r |
030ba309 RN |
1977 | //\r |
1978 | // Dump the microcode revision for each core.\r | |
1979 | //\r | |
7c2a6033 | 1980 | DEBUG_CODE_BEGIN ();\r |
053e878b MK |
1981 | UINT32 ThreadId;\r |
1982 | UINT32 ExpectedMicrocodeRevision;\r | |
1983 | \r | |
1984 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r | |
1985 | for (Index = 0; Index < CpuMpData->CpuCount; Index++) {\r | |
1986 | GetProcessorLocationByApicId (CpuInfoInHob[Index].InitialApicId, NULL, NULL, &ThreadId);\r | |
1987 | if (ThreadId == 0) {\r | |
1988 | //\r | |
1989 | // MicrocodeDetect() loads microcode in first thread of each core, so,\r | |
1990 | // CpuMpData->CpuData[Index].MicrocodeEntryAddr is initialized only for first thread of each core.\r | |
1991 | //\r | |
1992 | ExpectedMicrocodeRevision = 0;\r | |
1993 | if (CpuMpData->CpuData[Index].MicrocodeEntryAddr != 0) {\r | |
1994 | ExpectedMicrocodeRevision = ((CPU_MICROCODE_HEADER *)(UINTN)CpuMpData->CpuData[Index].MicrocodeEntryAddr)->UpdateRevision;\r | |
030ba309 | 1995 | }\r |
053e878b MK |
1996 | \r |
1997 | DEBUG ((\r | |
1998 | DEBUG_INFO,\r | |
1999 | "CPU[%04d]: Microcode revision = %08x, expected = %08x\n",\r | |
2000 | Index,\r | |
2001 | CpuMpData->CpuData[Index].MicrocodeRevision,\r | |
2002 | ExpectedMicrocodeRevision\r | |
2003 | ));\r | |
030ba309 | 2004 | }\r |
053e878b MK |
2005 | }\r |
2006 | \r | |
7c2a6033 | 2007 | DEBUG_CODE_END ();\r |
93ca4c0f JF |
2008 | //\r |
2009 | // Initialize global data for MP support\r | |
2010 | //\r | |
2011 | InitMpGlobalData (CpuMpData);\r | |
2012 | \r | |
f7f85d83 | 2013 | return EFI_SUCCESS;\r |
3e8ad6bd JF |
2014 | }\r |
2015 | \r | |
2016 | /**\r | |
2017 | Gets detailed MP-related information on the requested processor at the\r | |
2018 | instant this call is made. This service may only be called from the BSP.\r | |
2019 | \r | |
2020 | @param[in] ProcessorNumber The handle number of processor.\r | |
2021 | @param[out] ProcessorInfoBuffer A pointer to the buffer where information for\r | |
2022 | the requested processor is deposited.\r | |
2023 | @param[out] HealthData Return processor health data.\r | |
2024 | \r | |
2025 | @retval EFI_SUCCESS Processor information was returned.\r | |
2026 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
2027 | @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.\r | |
2028 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
2029 | ProcessorNumber does not exist in the platform.\r | |
2030 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
2031 | \r | |
2032 | **/\r | |
2033 | EFI_STATUS\r | |
2034 | EFIAPI\r | |
2035 | MpInitLibGetProcessorInfo (\r | |
2036 | IN UINTN ProcessorNumber,\r | |
2037 | OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer,\r | |
2038 | OUT EFI_HEALTH_FLAGS *HealthData OPTIONAL\r | |
2039 | )\r | |
2040 | {\r | |
053e878b MK |
2041 | CPU_MP_DATA *CpuMpData;\r |
2042 | UINTN CallerNumber;\r | |
2043 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
2044 | UINTN OriginalProcessorNumber;\r | |
ad52f25e | 2045 | \r |
053e878b MK |
2046 | CpuMpData = GetCpuMpData ();\r |
2047 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r | |
ad52f25e | 2048 | \r |
9099dcbd RN |
2049 | //\r |
2050 | // Lower 24 bits contains the actual processor number.\r | |
2051 | //\r | |
2052 | OriginalProcessorNumber = ProcessorNumber;\r | |
053e878b | 2053 | ProcessorNumber &= BIT24 - 1;\r |
9099dcbd | 2054 | \r |
ad52f25e JF |
2055 | //\r |
2056 | // Check whether caller processor is BSP\r | |
2057 | //\r | |
2058 | MpInitLibWhoAmI (&CallerNumber);\r | |
2059 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
2060 | return EFI_DEVICE_ERROR;\r | |
2061 | }\r | |
2062 | \r | |
2063 | if (ProcessorInfoBuffer == NULL) {\r | |
2064 | return EFI_INVALID_PARAMETER;\r | |
2065 | }\r | |
2066 | \r | |
2067 | if (ProcessorNumber >= CpuMpData->CpuCount) {\r | |
2068 | return EFI_NOT_FOUND;\r | |
2069 | }\r | |
2070 | \r | |
053e878b | 2071 | ProcessorInfoBuffer->ProcessorId = (UINT64)CpuInfoInHob[ProcessorNumber].ApicId;\r |
ad52f25e JF |
2072 | ProcessorInfoBuffer->StatusFlag = 0;\r |
2073 | if (ProcessorNumber == CpuMpData->BspNumber) {\r | |
2074 | ProcessorInfoBuffer->StatusFlag |= PROCESSOR_AS_BSP_BIT;\r | |
2075 | }\r | |
053e878b | 2076 | \r |
ad52f25e JF |
2077 | if (CpuMpData->CpuData[ProcessorNumber].CpuHealthy) {\r |
2078 | ProcessorInfoBuffer->StatusFlag |= PROCESSOR_HEALTH_STATUS_BIT;\r | |
2079 | }\r | |
053e878b | 2080 | \r |
ad52f25e JF |
2081 | if (GetApState (&CpuMpData->CpuData[ProcessorNumber]) == CpuStateDisabled) {\r |
2082 | ProcessorInfoBuffer->StatusFlag &= ~PROCESSOR_ENABLED_BIT;\r | |
2083 | } else {\r | |
2084 | ProcessorInfoBuffer->StatusFlag |= PROCESSOR_ENABLED_BIT;\r | |
2085 | }\r | |
2086 | \r | |
2087 | //\r | |
2088 | // Get processor location information\r | |
2089 | //\r | |
262128e5 | 2090 | GetProcessorLocationByApicId (\r |
31a1e4da | 2091 | CpuInfoInHob[ProcessorNumber].ApicId,\r |
73152f19 LD |
2092 | &ProcessorInfoBuffer->Location.Package,\r |
2093 | &ProcessorInfoBuffer->Location.Core,\r | |
2094 | &ProcessorInfoBuffer->Location.Thread\r | |
2095 | );\r | |
ad52f25e | 2096 | \r |
9099dcbd RN |
2097 | if ((OriginalProcessorNumber & CPU_V2_EXTENDED_TOPOLOGY) != 0) {\r |
2098 | GetProcessorLocation2ByApicId (\r | |
2099 | CpuInfoInHob[ProcessorNumber].ApicId,\r | |
2100 | &ProcessorInfoBuffer->ExtendedInformation.Location2.Package,\r | |
2101 | &ProcessorInfoBuffer->ExtendedInformation.Location2.Die,\r | |
2102 | &ProcessorInfoBuffer->ExtendedInformation.Location2.Tile,\r | |
2103 | &ProcessorInfoBuffer->ExtendedInformation.Location2.Module,\r | |
2104 | &ProcessorInfoBuffer->ExtendedInformation.Location2.Core,\r | |
2105 | &ProcessorInfoBuffer->ExtendedInformation.Location2.Thread\r | |
2106 | );\r | |
2107 | }\r | |
2108 | \r | |
ad52f25e | 2109 | if (HealthData != NULL) {\r |
31a1e4da | 2110 | HealthData->Uint32 = CpuInfoInHob[ProcessorNumber].Health;\r |
ad52f25e JF |
2111 | }\r |
2112 | \r | |
2113 | return EFI_SUCCESS;\r | |
3e8ad6bd | 2114 | }\r |
ad52f25e | 2115 | \r |
41be0da5 JF |
2116 | /**\r |
2117 | Worker function to switch the requested AP to be the BSP from that point onward.\r | |
2118 | \r | |
2119 | @param[in] ProcessorNumber The handle number of AP that is to become the new BSP.\r | |
2120 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r | |
2121 | enabled AP. Otherwise, it will be disabled.\r | |
2122 | \r | |
2123 | @retval EFI_SUCCESS BSP successfully switched.\r | |
7367cc6c | 2124 | @retval others Failed to switch BSP.\r |
41be0da5 JF |
2125 | \r |
2126 | **/\r | |
2127 | EFI_STATUS\r | |
2128 | SwitchBSPWorker (\r | |
053e878b MK |
2129 | IN UINTN ProcessorNumber,\r |
2130 | IN BOOLEAN EnableOldBSP\r | |
41be0da5 JF |
2131 | )\r |
2132 | {\r | |
2133 | CPU_MP_DATA *CpuMpData;\r | |
2134 | UINTN CallerNumber;\r | |
2135 | CPU_STATE State;\r | |
2136 | MSR_IA32_APIC_BASE_REGISTER ApicBaseMsr;\r | |
a8d75a18 | 2137 | BOOLEAN OldInterruptState;\r |
26b43433 | 2138 | BOOLEAN OldTimerInterruptState;\r |
a8d75a18 | 2139 | \r |
26b43433 JF |
2140 | //\r |
2141 | // Save and Disable Local APIC timer interrupt\r | |
2142 | //\r | |
2143 | OldTimerInterruptState = GetApicTimerInterruptState ();\r | |
2144 | DisableApicTimerInterrupt ();\r | |
a8d75a18 JF |
2145 | //\r |
2146 | // Before send both BSP and AP to a procedure to exchange their roles,\r | |
2147 | // interrupt must be disabled. This is because during the exchange role\r | |
2148 | // process, 2 CPU may use 1 stack. If interrupt happens, the stack will\r | |
2149 | // be corrupted, since interrupt return address will be pushed to stack\r | |
2150 | // by hardware.\r | |
2151 | //\r | |
2152 | OldInterruptState = SaveAndDisableInterrupts ();\r | |
2153 | \r | |
2154 | //\r | |
2155 | // Mask LINT0 & LINT1 for the old BSP\r | |
2156 | //\r | |
2157 | DisableLvtInterrupts ();\r | |
41be0da5 JF |
2158 | \r |
2159 | CpuMpData = GetCpuMpData ();\r | |
2160 | \r | |
2161 | //\r | |
2162 | // Check whether caller processor is BSP\r | |
2163 | //\r | |
2164 | MpInitLibWhoAmI (&CallerNumber);\r | |
2165 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
5e72dacc | 2166 | return EFI_DEVICE_ERROR;\r |
41be0da5 JF |
2167 | }\r |
2168 | \r | |
2169 | if (ProcessorNumber >= CpuMpData->CpuCount) {\r | |
2170 | return EFI_NOT_FOUND;\r | |
2171 | }\r | |
2172 | \r | |
2173 | //\r | |
2174 | // Check whether specified AP is disabled\r | |
2175 | //\r | |
2176 | State = GetApState (&CpuMpData->CpuData[ProcessorNumber]);\r | |
2177 | if (State == CpuStateDisabled) {\r | |
2178 | return EFI_INVALID_PARAMETER;\r | |
2179 | }\r | |
2180 | \r | |
2181 | //\r | |
2182 | // Check whether ProcessorNumber specifies the current BSP\r | |
2183 | //\r | |
2184 | if (ProcessorNumber == CpuMpData->BspNumber) {\r | |
2185 | return EFI_INVALID_PARAMETER;\r | |
2186 | }\r | |
2187 | \r | |
2188 | //\r | |
2189 | // Check whether specified AP is busy\r | |
2190 | //\r | |
2191 | if (State == CpuStateBusy) {\r | |
2192 | return EFI_NOT_READY;\r | |
2193 | }\r | |
2194 | \r | |
2195 | CpuMpData->BSPInfo.State = CPU_SWITCH_STATE_IDLE;\r | |
2196 | CpuMpData->APInfo.State = CPU_SWITCH_STATE_IDLE;\r | |
2197 | CpuMpData->SwitchBspFlag = TRUE;\r | |
b3775af2 | 2198 | CpuMpData->NewBspNumber = ProcessorNumber;\r |
41be0da5 JF |
2199 | \r |
2200 | //\r | |
2201 | // Clear the BSP bit of MSR_IA32_APIC_BASE\r | |
2202 | //\r | |
053e878b | 2203 | ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);\r |
41be0da5 JF |
2204 | ApicBaseMsr.Bits.BSP = 0;\r |
2205 | AsmWriteMsr64 (MSR_IA32_APIC_BASE, ApicBaseMsr.Uint64);\r | |
2206 | \r | |
2207 | //\r | |
2208 | // Need to wakeUp AP (future BSP).\r | |
2209 | //\r | |
cf4e79e4 | 2210 | WakeUpAP (CpuMpData, FALSE, ProcessorNumber, FutureBSPProc, CpuMpData, TRUE);\r |
41be0da5 JF |
2211 | \r |
2212 | AsmExchangeRole (&CpuMpData->BSPInfo, &CpuMpData->APInfo);\r | |
2213 | \r | |
2214 | //\r | |
2215 | // Set the BSP bit of MSR_IA32_APIC_BASE on new BSP\r | |
2216 | //\r | |
053e878b | 2217 | ApicBaseMsr.Uint64 = AsmReadMsr64 (MSR_IA32_APIC_BASE);\r |
41be0da5 JF |
2218 | ApicBaseMsr.Bits.BSP = 1;\r |
2219 | AsmWriteMsr64 (MSR_IA32_APIC_BASE, ApicBaseMsr.Uint64);\r | |
9c6961d5 | 2220 | ProgramVirtualWireMode ();\r |
41be0da5 JF |
2221 | \r |
2222 | //\r | |
2223 | // Wait for old BSP finished AP task\r | |
2224 | //\r | |
e048ce88 | 2225 | while (GetApState (&CpuMpData->CpuData[CallerNumber]) != CpuStateFinished) {\r |
41be0da5 JF |
2226 | CpuPause ();\r |
2227 | }\r | |
2228 | \r | |
2229 | CpuMpData->SwitchBspFlag = FALSE;\r | |
2230 | //\r | |
2231 | // Set old BSP enable state\r | |
2232 | //\r | |
2233 | if (!EnableOldBSP) {\r | |
2234 | SetApState (&CpuMpData->CpuData[CallerNumber], CpuStateDisabled);\r | |
af8ba51a JF |
2235 | } else {\r |
2236 | SetApState (&CpuMpData->CpuData[CallerNumber], CpuStateIdle);\r | |
41be0da5 | 2237 | }\r |
053e878b | 2238 | \r |
41be0da5 JF |
2239 | //\r |
2240 | // Save new BSP number\r | |
2241 | //\r | |
053e878b | 2242 | CpuMpData->BspNumber = (UINT32)ProcessorNumber;\r |
41be0da5 | 2243 | \r |
a8d75a18 JF |
2244 | //\r |
2245 | // Restore interrupt state.\r | |
2246 | //\r | |
2247 | SetInterruptState (OldInterruptState);\r | |
2248 | \r | |
26b43433 JF |
2249 | if (OldTimerInterruptState) {\r |
2250 | EnableApicTimerInterrupt ();\r | |
2251 | }\r | |
a8d75a18 | 2252 | \r |
41be0da5 JF |
2253 | return EFI_SUCCESS;\r |
2254 | }\r | |
ad52f25e | 2255 | \r |
e37109bc JF |
2256 | /**\r |
2257 | Worker function to let the caller enable or disable an AP from this point onward.\r | |
2258 | This service may only be called from the BSP.\r | |
2259 | \r | |
2260 | @param[in] ProcessorNumber The handle number of AP.\r | |
2261 | @param[in] EnableAP Specifies the new state for the processor for\r | |
2262 | enabled, FALSE for disabled.\r | |
2263 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies\r | |
2264 | the new health status of the AP.\r | |
2265 | \r | |
2266 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
2267 | @retval others Failed to Enable/Disable AP.\r | |
2268 | \r | |
2269 | **/\r | |
2270 | EFI_STATUS\r | |
2271 | EnableDisableApWorker (\r | |
053e878b MK |
2272 | IN UINTN ProcessorNumber,\r |
2273 | IN BOOLEAN EnableAP,\r | |
2274 | IN UINT32 *HealthFlag OPTIONAL\r | |
e37109bc JF |
2275 | )\r |
2276 | {\r | |
053e878b MK |
2277 | CPU_MP_DATA *CpuMpData;\r |
2278 | UINTN CallerNumber;\r | |
e37109bc JF |
2279 | \r |
2280 | CpuMpData = GetCpuMpData ();\r | |
2281 | \r | |
2282 | //\r | |
2283 | // Check whether caller processor is BSP\r | |
2284 | //\r | |
2285 | MpInitLibWhoAmI (&CallerNumber);\r | |
2286 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
2287 | return EFI_DEVICE_ERROR;\r | |
2288 | }\r | |
2289 | \r | |
2290 | if (ProcessorNumber == CpuMpData->BspNumber) {\r | |
2291 | return EFI_INVALID_PARAMETER;\r | |
2292 | }\r | |
2293 | \r | |
2294 | if (ProcessorNumber >= CpuMpData->CpuCount) {\r | |
2295 | return EFI_NOT_FOUND;\r | |
2296 | }\r | |
2297 | \r | |
2298 | if (!EnableAP) {\r | |
2299 | SetApState (&CpuMpData->CpuData[ProcessorNumber], CpuStateDisabled);\r | |
2300 | } else {\r | |
d5fdae96 | 2301 | ResetProcessorToIdleState (ProcessorNumber);\r |
e37109bc JF |
2302 | }\r |
2303 | \r | |
2304 | if (HealthFlag != NULL) {\r | |
2305 | CpuMpData->CpuData[ProcessorNumber].CpuHealthy =\r | |
053e878b | 2306 | (BOOLEAN)((*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT) != 0);\r |
e37109bc JF |
2307 | }\r |
2308 | \r | |
2309 | return EFI_SUCCESS;\r | |
2310 | }\r | |
2311 | \r | |
3e8ad6bd JF |
2312 | /**\r |
2313 | This return the handle number for the calling processor. This service may be\r | |
2314 | called from the BSP and APs.\r | |
2315 | \r | |
2316 | @param[out] ProcessorNumber Pointer to the handle number of AP.\r | |
2317 | The range is from 0 to the total number of\r | |
2318 | logical processors minus 1. The total number of\r | |
2319 | logical processors can be retrieved by\r | |
2320 | MpInitLibGetNumberOfProcessors().\r | |
2321 | \r | |
2322 | @retval EFI_SUCCESS The current processor handle number was returned\r | |
2323 | in ProcessorNumber.\r | |
2324 | @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.\r | |
2325 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
2326 | \r | |
2327 | **/\r | |
2328 | EFI_STATUS\r | |
2329 | EFIAPI\r | |
2330 | MpInitLibWhoAmI (\r | |
053e878b | 2331 | OUT UINTN *ProcessorNumber\r |
3e8ad6bd JF |
2332 | )\r |
2333 | {\r | |
053e878b | 2334 | CPU_MP_DATA *CpuMpData;\r |
5c9e0997 JF |
2335 | \r |
2336 | if (ProcessorNumber == NULL) {\r | |
2337 | return EFI_INVALID_PARAMETER;\r | |
2338 | }\r | |
2339 | \r | |
2340 | CpuMpData = GetCpuMpData ();\r | |
2341 | \r | |
2342 | return GetProcessorNumber (CpuMpData, ProcessorNumber);\r | |
3e8ad6bd | 2343 | }\r |
809213a6 | 2344 | \r |
3e8ad6bd JF |
2345 | /**\r |
2346 | Retrieves the number of logical processor in the platform and the number of\r | |
2347 | those logical processors that are enabled on this boot. This service may only\r | |
2348 | be called from the BSP.\r | |
2349 | \r | |
2350 | @param[out] NumberOfProcessors Pointer to the total number of logical\r | |
2351 | processors in the system, including the BSP\r | |
2352 | and disabled APs.\r | |
2353 | @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical\r | |
2354 | processors that exist in system, including\r | |
2355 | the BSP.\r | |
2356 | \r | |
2357 | @retval EFI_SUCCESS The number of logical processors and enabled\r | |
2358 | logical processors was retrieved.\r | |
2359 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
2360 | @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL and NumberOfEnabledProcessors\r | |
2361 | is NULL.\r | |
2362 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
2363 | \r | |
2364 | **/\r | |
2365 | EFI_STATUS\r | |
2366 | EFIAPI\r | |
2367 | MpInitLibGetNumberOfProcessors (\r | |
053e878b MK |
2368 | OUT UINTN *NumberOfProcessors OPTIONAL,\r |
2369 | OUT UINTN *NumberOfEnabledProcessors OPTIONAL\r | |
3e8ad6bd JF |
2370 | )\r |
2371 | {\r | |
053e878b MK |
2372 | CPU_MP_DATA *CpuMpData;\r |
2373 | UINTN CallerNumber;\r | |
2374 | UINTN ProcessorNumber;\r | |
2375 | UINTN EnabledProcessorNumber;\r | |
2376 | UINTN Index;\r | |
809213a6 JF |
2377 | \r |
2378 | CpuMpData = GetCpuMpData ();\r | |
2379 | \r | |
2380 | if ((NumberOfProcessors == NULL) && (NumberOfEnabledProcessors == NULL)) {\r | |
2381 | return EFI_INVALID_PARAMETER;\r | |
2382 | }\r | |
2383 | \r | |
2384 | //\r | |
2385 | // Check whether caller processor is BSP\r | |
2386 | //\r | |
2387 | MpInitLibWhoAmI (&CallerNumber);\r | |
2388 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
2389 | return EFI_DEVICE_ERROR;\r | |
2390 | }\r | |
2391 | \r | |
2392 | ProcessorNumber = CpuMpData->CpuCount;\r | |
2393 | EnabledProcessorNumber = 0;\r | |
2394 | for (Index = 0; Index < ProcessorNumber; Index++) {\r | |
2395 | if (GetApState (&CpuMpData->CpuData[Index]) != CpuStateDisabled) {\r | |
053e878b | 2396 | EnabledProcessorNumber++;\r |
809213a6 JF |
2397 | }\r |
2398 | }\r | |
2399 | \r | |
2400 | if (NumberOfProcessors != NULL) {\r | |
2401 | *NumberOfProcessors = ProcessorNumber;\r | |
2402 | }\r | |
053e878b | 2403 | \r |
809213a6 JF |
2404 | if (NumberOfEnabledProcessors != NULL) {\r |
2405 | *NumberOfEnabledProcessors = EnabledProcessorNumber;\r | |
2406 | }\r | |
2407 | \r | |
2408 | return EFI_SUCCESS;\r | |
3e8ad6bd | 2409 | }\r |
6a2ee2bb | 2410 | \r |
86efe976 JF |
2411 | /**\r |
2412 | Worker function to execute a caller provided function on all enabled APs.\r | |
2413 | \r | |
2414 | @param[in] Procedure A pointer to the function to be run on\r | |
2415 | enabled APs of the system.\r | |
2416 | @param[in] SingleThread If TRUE, then all the enabled APs execute\r | |
2417 | the function specified by Procedure one by\r | |
2418 | one, in ascending order of processor handle\r | |
2419 | number. If FALSE, then all the enabled APs\r | |
2420 | execute the function specified by Procedure\r | |
2421 | simultaneously.\r | |
ee0c39fa | 2422 | @param[in] ExcludeBsp Whether let BSP also trig this task.\r |
86efe976 JF |
2423 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r |
2424 | service.\r | |
367284e7 | 2425 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
86efe976 JF |
2426 | APs to return from Procedure, either for\r |
2427 | blocking or non-blocking mode.\r | |
2428 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
2429 | all APs.\r | |
2430 | @param[out] FailedCpuList If all APs finish successfully, then its\r | |
2431 | content is set to NULL. If not all APs\r | |
2432 | finish before timeout expires, then its\r | |
2433 | content is set to address of the buffer\r | |
2434 | holding handle numbers of the failed APs.\r | |
2435 | \r | |
2436 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r | |
2437 | the timeout expired.\r | |
2438 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r | |
2439 | to all enabled APs.\r | |
2440 | @retval others Failed to Startup all APs.\r | |
2441 | \r | |
2442 | **/\r | |
2443 | EFI_STATUS\r | |
ee0c39fa | 2444 | StartupAllCPUsWorker (\r |
053e878b MK |
2445 | IN EFI_AP_PROCEDURE Procedure,\r |
2446 | IN BOOLEAN SingleThread,\r | |
2447 | IN BOOLEAN ExcludeBsp,\r | |
2448 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
2449 | IN UINTN TimeoutInMicroseconds,\r | |
2450 | IN VOID *ProcedureArgument OPTIONAL,\r | |
2451 | OUT UINTN **FailedCpuList OPTIONAL\r | |
86efe976 JF |
2452 | )\r |
2453 | {\r | |
053e878b MK |
2454 | EFI_STATUS Status;\r |
2455 | CPU_MP_DATA *CpuMpData;\r | |
2456 | UINTN ProcessorCount;\r | |
2457 | UINTN ProcessorNumber;\r | |
2458 | UINTN CallerNumber;\r | |
2459 | CPU_AP_DATA *CpuData;\r | |
2460 | BOOLEAN HasEnabledAp;\r | |
2461 | CPU_STATE ApState;\r | |
86efe976 JF |
2462 | \r |
2463 | CpuMpData = GetCpuMpData ();\r | |
2464 | \r | |
2465 | if (FailedCpuList != NULL) {\r | |
2466 | *FailedCpuList = NULL;\r | |
2467 | }\r | |
2468 | \r | |
053e878b | 2469 | if ((CpuMpData->CpuCount == 1) && ExcludeBsp) {\r |
86efe976 JF |
2470 | return EFI_NOT_STARTED;\r |
2471 | }\r | |
2472 | \r | |
2473 | if (Procedure == NULL) {\r | |
2474 | return EFI_INVALID_PARAMETER;\r | |
2475 | }\r | |
2476 | \r | |
2477 | //\r | |
2478 | // Check whether caller processor is BSP\r | |
2479 | //\r | |
2480 | MpInitLibWhoAmI (&CallerNumber);\r | |
2481 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
2482 | return EFI_DEVICE_ERROR;\r | |
2483 | }\r | |
2484 | \r | |
2485 | //\r | |
2486 | // Update AP state\r | |
2487 | //\r | |
2488 | CheckAndUpdateApsStatus ();\r | |
2489 | \r | |
2490 | ProcessorCount = CpuMpData->CpuCount;\r | |
2491 | HasEnabledAp = FALSE;\r | |
2492 | //\r | |
2493 | // Check whether all enabled APs are idle.\r | |
2494 | // If any enabled AP is not idle, return EFI_NOT_READY.\r | |
2495 | //\r | |
2496 | for (ProcessorNumber = 0; ProcessorNumber < ProcessorCount; ProcessorNumber++) {\r | |
2497 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r | |
2498 | if (ProcessorNumber != CpuMpData->BspNumber) {\r | |
2499 | ApState = GetApState (CpuData);\r | |
2500 | if (ApState != CpuStateDisabled) {\r | |
2501 | HasEnabledAp = TRUE;\r | |
2502 | if (ApState != CpuStateIdle) {\r | |
2503 | //\r | |
2504 | // If any enabled APs are busy, return EFI_NOT_READY.\r | |
2505 | //\r | |
2506 | return EFI_NOT_READY;\r | |
2507 | }\r | |
2508 | }\r | |
2509 | }\r | |
2510 | }\r | |
2511 | \r | |
ee0c39fa | 2512 | if (!HasEnabledAp && ExcludeBsp) {\r |
86efe976 | 2513 | //\r |
ee0c39fa | 2514 | // If no enabled AP exists and not include Bsp to do the procedure, return EFI_NOT_STARTED.\r |
86efe976 JF |
2515 | //\r |
2516 | return EFI_NOT_STARTED;\r | |
2517 | }\r | |
2518 | \r | |
2da3e96c | 2519 | CpuMpData->RunningCount = 0;\r |
86efe976 | 2520 | for (ProcessorNumber = 0; ProcessorNumber < ProcessorCount; ProcessorNumber++) {\r |
053e878b | 2521 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r |
86efe976 JF |
2522 | CpuData->Waiting = FALSE;\r |
2523 | if (ProcessorNumber != CpuMpData->BspNumber) {\r | |
2524 | if (CpuData->State == CpuStateIdle) {\r | |
2525 | //\r | |
2526 | // Mark this processor as responsible for current calling.\r | |
2527 | //\r | |
2528 | CpuData->Waiting = TRUE;\r | |
2da3e96c | 2529 | CpuMpData->RunningCount++;\r |
86efe976 JF |
2530 | }\r |
2531 | }\r | |
2532 | }\r | |
2533 | \r | |
2534 | CpuMpData->Procedure = Procedure;\r | |
2535 | CpuMpData->ProcArguments = ProcedureArgument;\r | |
2536 | CpuMpData->SingleThread = SingleThread;\r | |
2537 | CpuMpData->FinishedCount = 0;\r | |
86efe976 JF |
2538 | CpuMpData->FailedCpuList = FailedCpuList;\r |
2539 | CpuMpData->ExpectedTime = CalculateTimeout (\r | |
2540 | TimeoutInMicroseconds,\r | |
2541 | &CpuMpData->CurrentTime\r | |
2542 | );\r | |
053e878b MK |
2543 | CpuMpData->TotalTime = 0;\r |
2544 | CpuMpData->WaitEvent = WaitEvent;\r | |
86efe976 JF |
2545 | \r |
2546 | if (!SingleThread) {\r | |
cf4e79e4 | 2547 | WakeUpAP (CpuMpData, TRUE, 0, Procedure, ProcedureArgument, FALSE);\r |
86efe976 JF |
2548 | } else {\r |
2549 | for (ProcessorNumber = 0; ProcessorNumber < ProcessorCount; ProcessorNumber++) {\r | |
2550 | if (ProcessorNumber == CallerNumber) {\r | |
2551 | continue;\r | |
2552 | }\r | |
053e878b | 2553 | \r |
86efe976 | 2554 | if (CpuMpData->CpuData[ProcessorNumber].Waiting) {\r |
cf4e79e4 | 2555 | WakeUpAP (CpuMpData, FALSE, ProcessorNumber, Procedure, ProcedureArgument, TRUE);\r |
86efe976 JF |
2556 | break;\r |
2557 | }\r | |
2558 | }\r | |
2559 | }\r | |
2560 | \r | |
ee0c39fa ED |
2561 | if (!ExcludeBsp) {\r |
2562 | //\r | |
2563 | // Start BSP.\r | |
2564 | //\r | |
2565 | Procedure (ProcedureArgument);\r | |
2566 | }\r | |
2567 | \r | |
86efe976 JF |
2568 | Status = EFI_SUCCESS;\r |
2569 | if (WaitEvent == NULL) {\r | |
2570 | do {\r | |
2571 | Status = CheckAllAPs ();\r | |
2572 | } while (Status == EFI_NOT_READY);\r | |
2573 | }\r | |
2574 | \r | |
2575 | return Status;\r | |
2576 | }\r | |
2577 | \r | |
20ae5774 JF |
2578 | /**\r |
2579 | Worker function to let the caller get one enabled AP to execute a caller-provided\r | |
2580 | function.\r | |
2581 | \r | |
2582 | @param[in] Procedure A pointer to the function to be run on\r | |
2583 | enabled APs of the system.\r | |
2584 | @param[in] ProcessorNumber The handle number of the AP.\r | |
2585 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
2586 | service.\r | |
367284e7 | 2587 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
20ae5774 JF |
2588 | APs to return from Procedure, either for\r |
2589 | blocking or non-blocking mode.\r | |
2590 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
2591 | all APs.\r | |
2592 | @param[out] Finished If AP returns from Procedure before the\r | |
2593 | timeout expires, its content is set to TRUE.\r | |
2594 | Otherwise, the value is set to FALSE.\r | |
2595 | \r | |
2596 | @retval EFI_SUCCESS In blocking mode, specified AP finished before\r | |
2597 | the timeout expires.\r | |
2598 | @retval others Failed to Startup AP.\r | |
2599 | \r | |
2600 | **/\r | |
2601 | EFI_STATUS\r | |
2602 | StartupThisAPWorker (\r | |
053e878b MK |
2603 | IN EFI_AP_PROCEDURE Procedure,\r |
2604 | IN UINTN ProcessorNumber,\r | |
2605 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
2606 | IN UINTN TimeoutInMicroseconds,\r | |
2607 | IN VOID *ProcedureArgument OPTIONAL,\r | |
2608 | OUT BOOLEAN *Finished OPTIONAL\r | |
20ae5774 JF |
2609 | )\r |
2610 | {\r | |
053e878b MK |
2611 | EFI_STATUS Status;\r |
2612 | CPU_MP_DATA *CpuMpData;\r | |
2613 | CPU_AP_DATA *CpuData;\r | |
2614 | UINTN CallerNumber;\r | |
20ae5774 JF |
2615 | \r |
2616 | CpuMpData = GetCpuMpData ();\r | |
2617 | \r | |
2618 | if (Finished != NULL) {\r | |
2619 | *Finished = FALSE;\r | |
2620 | }\r | |
2621 | \r | |
2622 | //\r | |
2623 | // Check whether caller processor is BSP\r | |
2624 | //\r | |
2625 | MpInitLibWhoAmI (&CallerNumber);\r | |
2626 | if (CallerNumber != CpuMpData->BspNumber) {\r | |
2627 | return EFI_DEVICE_ERROR;\r | |
2628 | }\r | |
2629 | \r | |
2630 | //\r | |
2631 | // Check whether processor with the handle specified by ProcessorNumber exists\r | |
2632 | //\r | |
2633 | if (ProcessorNumber >= CpuMpData->CpuCount) {\r | |
2634 | return EFI_NOT_FOUND;\r | |
2635 | }\r | |
2636 | \r | |
2637 | //\r | |
2638 | // Check whether specified processor is BSP\r | |
2639 | //\r | |
2640 | if (ProcessorNumber == CpuMpData->BspNumber) {\r | |
2641 | return EFI_INVALID_PARAMETER;\r | |
2642 | }\r | |
2643 | \r | |
2644 | //\r | |
2645 | // Check parameter Procedure\r | |
2646 | //\r | |
2647 | if (Procedure == NULL) {\r | |
2648 | return EFI_INVALID_PARAMETER;\r | |
2649 | }\r | |
2650 | \r | |
2651 | //\r | |
2652 | // Update AP state\r | |
2653 | //\r | |
2654 | CheckAndUpdateApsStatus ();\r | |
2655 | \r | |
2656 | //\r | |
2657 | // Check whether specified AP is disabled\r | |
2658 | //\r | |
2659 | if (GetApState (&CpuMpData->CpuData[ProcessorNumber]) == CpuStateDisabled) {\r | |
2660 | return EFI_INVALID_PARAMETER;\r | |
2661 | }\r | |
2662 | \r | |
2663 | //\r | |
2664 | // If WaitEvent is not NULL, execute in non-blocking mode.\r | |
2665 | // BSP saves data for CheckAPsStatus(), and returns EFI_SUCCESS.\r | |
2666 | // CheckAPsStatus() will check completion and timeout periodically.\r | |
2667 | //\r | |
053e878b | 2668 | CpuData = &CpuMpData->CpuData[ProcessorNumber];\r |
20ae5774 JF |
2669 | CpuData->WaitEvent = WaitEvent;\r |
2670 | CpuData->Finished = Finished;\r | |
2671 | CpuData->ExpectedTime = CalculateTimeout (TimeoutInMicroseconds, &CpuData->CurrentTime);\r | |
2672 | CpuData->TotalTime = 0;\r | |
2673 | \r | |
cf4e79e4 | 2674 | WakeUpAP (CpuMpData, FALSE, ProcessorNumber, Procedure, ProcedureArgument, TRUE);\r |
20ae5774 JF |
2675 | \r |
2676 | //\r | |
2677 | // If WaitEvent is NULL, execute in blocking mode.\r | |
2678 | // BSP checks AP's state until it finishes or TimeoutInMicrosecsond expires.\r | |
2679 | //\r | |
2680 | Status = EFI_SUCCESS;\r | |
2681 | if (WaitEvent == NULL) {\r | |
2682 | do {\r | |
2683 | Status = CheckThisAP (ProcessorNumber);\r | |
2684 | } while (Status == EFI_NOT_READY);\r | |
2685 | }\r | |
2686 | \r | |
2687 | return Status;\r | |
2688 | }\r | |
2689 | \r | |
93ca4c0f JF |
2690 | /**\r |
2691 | Get pointer to CPU MP Data structure from GUIDed HOB.\r | |
2692 | \r | |
2693 | @return The pointer to CPU MP Data structure.\r | |
2694 | **/\r | |
2695 | CPU_MP_DATA *\r | |
2696 | GetCpuMpDataFromGuidedHob (\r | |
2697 | VOID\r | |
2698 | )\r | |
2699 | {\r | |
053e878b MK |
2700 | EFI_HOB_GUID_TYPE *GuidHob;\r |
2701 | VOID *DataInHob;\r | |
2702 | CPU_MP_DATA *CpuMpData;\r | |
93ca4c0f JF |
2703 | \r |
2704 | CpuMpData = NULL;\r | |
053e878b | 2705 | GuidHob = GetFirstGuidHob (&mCpuInitMpLibHobGuid);\r |
93ca4c0f JF |
2706 | if (GuidHob != NULL) {\r |
2707 | DataInHob = GET_GUID_HOB_DATA (GuidHob);\r | |
053e878b | 2708 | CpuMpData = (CPU_MP_DATA *)(*(UINTN *)DataInHob);\r |
93ca4c0f | 2709 | }\r |
053e878b | 2710 | \r |
93ca4c0f JF |
2711 | return CpuMpData;\r |
2712 | }\r | |
42c37b3b | 2713 | \r |
ee0c39fa ED |
2714 | /**\r |
2715 | This service executes a caller provided function on all enabled CPUs.\r | |
2716 | \r | |
2717 | @param[in] Procedure A pointer to the function to be run on\r | |
2718 | enabled APs of the system. See type\r | |
2719 | EFI_AP_PROCEDURE.\r | |
2720 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r | |
2721 | APs to return from Procedure, either for\r | |
2722 | blocking or non-blocking mode. Zero means\r | |
2723 | infinity. TimeoutInMicroseconds is ignored\r | |
2724 | for BSP.\r | |
2725 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
2726 | all APs.\r | |
2727 | \r | |
2728 | @retval EFI_SUCCESS In blocking mode, all CPUs have finished before\r | |
2729 | the timeout expired.\r | |
2730 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r | |
2731 | to all enabled CPUs.\r | |
2732 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
2733 | @retval EFI_NOT_READY Any enabled APs are busy.\r | |
2734 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
2735 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
2736 | all enabled APs have finished.\r | |
2737 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
2738 | \r | |
2739 | **/\r | |
2740 | EFI_STATUS\r | |
2741 | EFIAPI\r | |
2742 | MpInitLibStartupAllCPUs (\r | |
053e878b MK |
2743 | IN EFI_AP_PROCEDURE Procedure,\r |
2744 | IN UINTN TimeoutInMicroseconds,\r | |
2745 | IN VOID *ProcedureArgument OPTIONAL\r | |
ee0c39fa ED |
2746 | )\r |
2747 | {\r | |
2748 | return StartupAllCPUsWorker (\r | |
2749 | Procedure,\r | |
2750 | FALSE,\r | |
2751 | FALSE,\r | |
2752 | NULL,\r | |
2753 | TimeoutInMicroseconds,\r | |
2754 | ProcedureArgument,\r | |
2755 | NULL\r | |
2756 | );\r | |
2757 | }\r | |
b95908e0 BS |
2758 | \r |
2759 | /**\r | |
2760 | The function check if the specified Attr is set.\r | |
2761 | \r | |
2762 | @param[in] CurrentAttr The current attribute.\r | |
2763 | @param[in] Attr The attribute to check.\r | |
2764 | \r | |
2765 | @retval TRUE The specified Attr is set.\r | |
2766 | @retval FALSE The specified Attr is not set.\r | |
2767 | \r | |
2768 | **/\r | |
2769 | STATIC\r | |
2770 | BOOLEAN\r | |
2771 | AmdMemEncryptionAttrCheck (\r | |
2772 | IN UINT64 CurrentAttr,\r | |
2773 | IN CONFIDENTIAL_COMPUTING_GUEST_ATTR Attr\r | |
2774 | )\r | |
2775 | {\r | |
2776 | switch (Attr) {\r | |
2777 | case CCAttrAmdSev:\r | |
2778 | //\r | |
2779 | // SEV is automatically enabled if SEV-ES or SEV-SNP is active.\r | |
2780 | //\r | |
2781 | return CurrentAttr >= CCAttrAmdSev;\r | |
2782 | case CCAttrAmdSevEs:\r | |
2783 | //\r | |
2784 | // SEV-ES is automatically enabled if SEV-SNP is active.\r | |
2785 | //\r | |
2786 | return CurrentAttr >= CCAttrAmdSevEs;\r | |
2787 | case CCAttrAmdSevSnp:\r | |
2788 | return CurrentAttr == CCAttrAmdSevSnp;\r | |
2789 | default:\r | |
2790 | return FALSE;\r | |
2791 | }\r | |
2792 | }\r | |
2793 | \r | |
2794 | /**\r | |
2795 | Check if the specified confidential computing attribute is active.\r | |
2796 | \r | |
2797 | @param[in] Attr The attribute to check.\r | |
2798 | \r | |
2799 | @retval TRUE The specified Attr is active.\r | |
2800 | @retval FALSE The specified Attr is not active.\r | |
2801 | \r | |
2802 | **/\r | |
2803 | BOOLEAN\r | |
2804 | EFIAPI\r | |
2805 | ConfidentialComputingGuestHas (\r | |
2806 | IN CONFIDENTIAL_COMPUTING_GUEST_ATTR Attr\r | |
2807 | )\r | |
2808 | {\r | |
2809 | UINT64 CurrentAttr;\r | |
2810 | \r | |
2811 | //\r | |
2812 | // Get the current CC attribute.\r | |
2813 | //\r | |
2814 | CurrentAttr = PcdGet64 (PcdConfidentialComputingGuestAttr);\r | |
2815 | \r | |
2816 | //\r | |
2817 | // If attr is for the AMD group then call AMD specific checks.\r | |
2818 | //\r | |
2819 | if (((RShiftU64 (CurrentAttr, 8)) & 0xff) == 1) {\r | |
2820 | return AmdMemEncryptionAttrCheck (CurrentAttr, Attr);\r | |
2821 | }\r | |
2822 | \r | |
2823 | return (CurrentAttr == Attr);\r | |
2824 | }\r |