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