projects / mirror_edk2.git / blame
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| 6022e28c JJ |
1 | /** @file\r |
| 2 | CPU DXE Module.\r | |
| 3 | \r | |
| 4 | Copyright (c) 2008 - 2014, 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 "CpuDxe.h"\r | |
| 16 | #include "CpuMp.h"\r | |
| 17 | \r | |
| 6a26a597 CF |
18 | UINTN gMaxLogicalProcessorNumber;\r |
| 19 | UINTN gApStackSize;\r | |
| 3f4f0af8 | 20 | UINTN gPollInterval = 100; // 100 microseconds\r |
| 6a26a597 | 21 | \r |
| 03673ae1 CF |
22 | MP_SYSTEM_DATA mMpSystemData;\r |
| 23 | \r | |
| fab82c18 JJ |
24 | VOID *mCommonStack = 0;\r |
| 25 | VOID *mTopOfApCommonStack = 0;\r | |
| 6a26a597 | 26 | VOID *mApStackStart = 0;\r |
| fab82c18 | 27 | \r |
| ac9dbb3b | 28 | BOOLEAN mAPsAlreadyInitFinished = FALSE;\r |
| acb2172d CF |
29 | volatile BOOLEAN mStopCheckAllAPsStatus = TRUE;\r |
| 30 | \r | |
| 003973d9 | 31 | EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {\r |
| d894d8b7 | 32 | GetNumberOfProcessors,\r |
| e7938b5a | 33 | GetProcessorInfo,\r |
| 5fee172f | 34 | StartupAllAPs,\r |
| 3f4f0af8 | 35 | StartupThisAP,\r |
| b7c05ba5 | 36 | SwitchBSP,\r |
| fa7ce675 | 37 | EnableDisableAP,\r |
| cfa2fac1 | 38 | WhoAmI\r |
| 003973d9 CF |
39 | };\r |
| 40 | \r | |
| d16cf36d CF |
41 | /**\r |
| 42 | Get Mp Service Lock.\r | |
| 43 | \r | |
| 44 | @param CpuData the pointer to CPU_DATA_BLOCK of specified processor\r | |
| 45 | \r | |
| 46 | **/\r | |
| 47 | VOID\r | |
| 48 | GetMpSpinLock (\r | |
| 49 | IN CPU_DATA_BLOCK *CpuData\r | |
| 50 | )\r | |
| 51 | {\r | |
| 52 | while (!AcquireSpinLockOrFail (&CpuData->CpuDataLock)) {\r | |
| 53 | CpuPause ();\r | |
| 54 | }\r | |
| 55 | }\r | |
| 56 | \r | |
| 57 | /**\r | |
| 58 | Release Mp Service Lock.\r | |
| 59 | \r | |
| 60 | @param CpuData the pointer to CPU_DATA_BLOCK of specified processor\r | |
| 61 | \r | |
| 62 | **/\r | |
| 63 | VOID\r | |
| 64 | ReleaseMpSpinLock (\r | |
| 65 | IN CPU_DATA_BLOCK *CpuData\r | |
| 66 | )\r | |
| 67 | {\r | |
| 68 | ReleaseSpinLock (&CpuData->CpuDataLock);\r | |
| 69 | }\r | |
| 70 | \r | |
| d894d8b7 CF |
71 | /**\r |
| 72 | Check whether caller processor is BSP.\r | |
| 73 | \r | |
| 74 | @retval TRUE the caller is BSP\r | |
| 75 | @retval FALSE the caller is AP\r | |
| 76 | \r | |
| 77 | **/\r | |
| 78 | BOOLEAN\r | |
| 79 | IsBSP (\r | |
| 80 | VOID\r | |
| 81 | )\r | |
| 82 | {\r | |
| 83 | UINTN CpuIndex;\r | |
| 84 | CPU_DATA_BLOCK *CpuData;\r | |
| 85 | \r | |
| 86 | CpuData = NULL;\r | |
| 87 | \r | |
| 88 | WhoAmI (&mMpServicesTemplate, &CpuIndex);\r | |
| 89 | CpuData = &mMpSystemData.CpuDatas[CpuIndex];\r | |
| 90 | \r | |
| 91 | return CpuData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT ? TRUE : FALSE;\r | |
| 92 | }\r | |
| 93 | \r | |
| fa7ce675 CF |
94 | /**\r |
| 95 | Get the Application Processors state.\r | |
| 96 | \r | |
| 97 | @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r | |
| 98 | \r | |
| 99 | @retval CPU_STATE the AP status\r | |
| 100 | \r | |
| 101 | **/\r | |
| 102 | CPU_STATE\r | |
| 103 | GetApState (\r | |
| 104 | IN CPU_DATA_BLOCK *CpuData\r | |
| 105 | )\r | |
| 106 | {\r | |
| 107 | CPU_STATE State;\r | |
| 108 | \r | |
| d16cf36d | 109 | GetMpSpinLock (CpuData);\r |
| fa7ce675 | 110 | State = CpuData->State;\r |
| d16cf36d | 111 | ReleaseMpSpinLock (CpuData);\r |
| fa7ce675 CF |
112 | \r |
| 113 | return State;\r | |
| 114 | }\r | |
| 115 | \r | |
| 3f4f0af8 CF |
116 | /**\r |
| 117 | Set the Application Processors state.\r | |
| 118 | \r | |
| 119 | @param CpuData The pointer to CPU_DATA_BLOCK of specified AP\r | |
| 120 | @param State The AP status\r | |
| 121 | \r | |
| 122 | **/\r | |
| 123 | VOID\r | |
| 124 | SetApState (\r | |
| 125 | IN CPU_DATA_BLOCK *CpuData,\r | |
| 126 | IN CPU_STATE State\r | |
| 127 | )\r | |
| 128 | {\r | |
| d16cf36d | 129 | GetMpSpinLock (CpuData);\r |
| 3f4f0af8 | 130 | CpuData->State = State;\r |
| d16cf36d | 131 | ReleaseMpSpinLock (CpuData);\r |
| 3f4f0af8 CF |
132 | }\r |
| 133 | \r | |
| 134 | /**\r | |
| 135 | Set the Application Processor prepare to run a function specified\r | |
| 136 | by Params.\r | |
| 137 | \r | |
| 138 | @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r | |
| 139 | @param Procedure A pointer to the function to be run on enabled APs of the system\r | |
| 140 | @param ProcedureArgument Pointer to the optional parameter of the assigned function\r | |
| 141 | \r | |
| 142 | **/\r | |
| 143 | VOID\r | |
| 144 | SetApProcedure (\r | |
| 145 | IN CPU_DATA_BLOCK *CpuData,\r | |
| 146 | IN EFI_AP_PROCEDURE Procedure,\r | |
| 147 | IN VOID *ProcedureArgument\r | |
| 148 | )\r | |
| 149 | {\r | |
| d16cf36d | 150 | GetMpSpinLock (CpuData);\r |
| 3f4f0af8 CF |
151 | CpuData->Parameter = ProcedureArgument;\r |
| 152 | CpuData->Procedure = Procedure;\r | |
| d16cf36d | 153 | ReleaseMpSpinLock (CpuData);\r |
| 3f4f0af8 CF |
154 | }\r |
| 155 | \r | |
| fa7ce675 CF |
156 | /**\r |
| 157 | Check the Application Processors Status whether contains the Flags.\r | |
| 158 | \r | |
| 159 | @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r | |
| 160 | @param Flags the StatusFlag describing in EFI_PROCESSOR_INFORMATION\r | |
| 161 | \r | |
| 162 | @retval TRUE the AP status includes the StatusFlag\r | |
| 163 | @retval FALSE the AP status excludes the StatusFlag\r | |
| 164 | \r | |
| 165 | **/\r | |
| 166 | BOOLEAN\r | |
| 167 | TestCpuStatusFlag (\r | |
| 168 | IN CPU_DATA_BLOCK *CpuData,\r | |
| 169 | IN UINT32 Flags\r | |
| 170 | )\r | |
| 171 | {\r | |
| 172 | UINT32 Ret;\r | |
| 173 | \r | |
| d16cf36d | 174 | GetMpSpinLock (CpuData);\r |
| fa7ce675 | 175 | Ret = CpuData->Info.StatusFlag & Flags;\r |
| d16cf36d | 176 | ReleaseMpSpinLock (CpuData);\r |
| fa7ce675 CF |
177 | \r |
| 178 | return !!(Ret);\r | |
| 179 | }\r | |
| 180 | \r | |
| 181 | /**\r | |
| 182 | Bitwise-Or of the Application Processors Status with the Flags.\r | |
| 183 | \r | |
| 184 | @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r | |
| 185 | @param Flags the StatusFlag describing in EFI_PROCESSOR_INFORMATION\r | |
| 186 | \r | |
| 187 | **/\r | |
| 188 | VOID\r | |
| 189 | CpuStatusFlagOr (\r | |
| 190 | IN CPU_DATA_BLOCK *CpuData,\r | |
| 191 | IN UINT32 Flags\r | |
| 192 | )\r | |
| 193 | {\r | |
| d16cf36d | 194 | GetMpSpinLock (CpuData);\r |
| fa7ce675 | 195 | CpuData->Info.StatusFlag |= Flags;\r |
| d16cf36d | 196 | ReleaseMpSpinLock (CpuData);\r |
| fa7ce675 CF |
197 | }\r |
| 198 | \r | |
| 199 | /**\r | |
| 200 | Bitwise-AndNot of the Application Processors Status with the Flags.\r | |
| 201 | \r | |
| 202 | @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r | |
| 203 | @param Flags the StatusFlag describing in EFI_PROCESSOR_INFORMATION\r | |
| 204 | \r | |
| 205 | **/\r | |
| 206 | VOID\r | |
| 207 | CpuStatusFlagAndNot (\r | |
| 208 | IN CPU_DATA_BLOCK *CpuData,\r | |
| 209 | IN UINT32 Flags\r | |
| 210 | )\r | |
| 211 | {\r | |
| d16cf36d | 212 | GetMpSpinLock (CpuData);\r |
| fa7ce675 | 213 | CpuData->Info.StatusFlag &= ~Flags;\r |
| d16cf36d | 214 | ReleaseMpSpinLock (CpuData);\r |
| fa7ce675 CF |
215 | }\r |
| 216 | \r | |
| 3f4f0af8 CF |
217 | /**\r |
| 218 | Searches for the next blocking AP.\r | |
| 219 | \r | |
| 220 | Search for the next AP that is put in blocking state by single-threaded StartupAllAPs().\r | |
| 221 | \r | |
| 222 | @param NextNumber Pointer to the processor number of the next blocking AP.\r | |
| 223 | \r | |
| 224 | @retval EFI_SUCCESS The next blocking AP has been found.\r | |
| 225 | @retval EFI_NOT_FOUND No blocking AP exists.\r | |
| 226 | \r | |
| 227 | **/\r | |
| 228 | EFI_STATUS\r | |
| 229 | GetNextBlockedNumber (\r | |
| 230 | OUT UINTN *NextNumber\r | |
| 231 | )\r | |
| 232 | {\r | |
| 233 | UINTN Number;\r | |
| 234 | CPU_STATE CpuState;\r | |
| 235 | CPU_DATA_BLOCK *CpuData;\r | |
| 236 | \r | |
| 237 | for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {\r | |
| 238 | CpuData = &mMpSystemData.CpuDatas[Number];\r | |
| 239 | if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {\r | |
| 240 | //\r | |
| 241 | // Skip BSP\r | |
| 242 | //\r | |
| 243 | continue;\r | |
| 244 | }\r | |
| 245 | \r | |
| 246 | CpuState = GetApState (CpuData);\r | |
| 247 | if (CpuState == CpuStateBlocked) {\r | |
| 248 | *NextNumber = Number;\r | |
| 249 | return EFI_SUCCESS;\r | |
| 250 | }\r | |
| 251 | }\r | |
| 252 | \r | |
| 253 | return EFI_NOT_FOUND;\r | |
| 254 | }\r | |
| 255 | \r | |
| 5fee172f CF |
256 | /**\r |
| 257 | Check if the APs state are finished, and update them to idle state\r | |
| 258 | by StartupAllAPs().\r | |
| 259 | \r | |
| 260 | **/\r | |
| 261 | VOID\r | |
| 262 | CheckAndUpdateAllAPsToIdleState (\r | |
| 263 | VOID\r | |
| 264 | )\r | |
| 265 | {\r | |
| 266 | UINTN ProcessorNumber;\r | |
| 267 | UINTN NextNumber;\r | |
| 268 | CPU_DATA_BLOCK *CpuData;\r | |
| 269 | EFI_STATUS Status;\r | |
| 270 | CPU_STATE CpuState;\r | |
| 271 | \r | |
| 272 | for (ProcessorNumber = 0; ProcessorNumber < mMpSystemData.NumberOfProcessors; ProcessorNumber++) {\r | |
| 273 | CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];\r | |
| 274 | if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {\r | |
| 275 | //\r | |
| 276 | // Skip BSP\r | |
| 277 | //\r | |
| 278 | continue;\r | |
| 279 | }\r | |
| 280 | \r | |
| 281 | if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {\r | |
| 282 | //\r | |
| 283 | // Skip Disabled processors\r | |
| 284 | //\r | |
| 285 | continue;\r | |
| 286 | }\r | |
| 287 | \r | |
| 288 | CpuState = GetApState (CpuData);\r | |
| 289 | if (CpuState == CpuStateFinished) {\r | |
| 290 | mMpSystemData.FinishCount++;\r | |
| 291 | if (mMpSystemData.SingleThread) {\r | |
| 292 | Status = GetNextBlockedNumber (&NextNumber);\r | |
| 293 | if (!EFI_ERROR (Status)) {\r | |
| 294 | SetApState (&mMpSystemData.CpuDatas[NextNumber], CpuStateReady);\r | |
| 295 | SetApProcedure (&mMpSystemData.CpuDatas[NextNumber],\r | |
| 296 | mMpSystemData.Procedure,\r | |
| 297 | mMpSystemData.ProcedureArgument);\r | |
| 298 | }\r | |
| 299 | }\r | |
| 300 | \r | |
| 301 | SetApState (CpuData, CpuStateIdle);\r | |
| 302 | }\r | |
| 303 | }\r | |
| 304 | }\r | |
| 305 | \r | |
| 306 | /**\r | |
| 307 | If the timeout expires before all APs returns from Procedure,\r | |
| 308 | we should forcibly terminate the executing AP and fill FailedList back\r | |
| 309 | by StartupAllAPs().\r | |
| 310 | \r | |
| 311 | **/\r | |
| 312 | VOID\r | |
| 313 | ResetAllFailedAPs (\r | |
| 314 | VOID\r | |
| 315 | )\r | |
| 316 | {\r | |
| 317 | CPU_DATA_BLOCK *CpuData;\r | |
| 318 | UINTN Number;\r | |
| 319 | CPU_STATE CpuState;\r | |
| 320 | \r | |
| 321 | if (mMpSystemData.FailedList != NULL) {\r | |
| 322 | *mMpSystemData.FailedList = AllocatePool ((mMpSystemData.StartCount - mMpSystemData.FinishCount + 1) * sizeof(UINTN));\r | |
| 323 | ASSERT (*mMpSystemData.FailedList != NULL);\r | |
| 324 | }\r | |
| 325 | \r | |
| 326 | for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {\r | |
| 327 | CpuData = &mMpSystemData.CpuDatas[Number];\r | |
| 328 | if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {\r | |
| 329 | //\r | |
| 330 | // Skip BSP\r | |
| 331 | //\r | |
| 332 | continue;\r | |
| 333 | }\r | |
| 334 | \r | |
| 335 | if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {\r | |
| 336 | //\r | |
| 337 | // Skip Disabled processors\r | |
| 338 | //\r | |
| 339 | continue;\r | |
| 340 | }\r | |
| 341 | \r | |
| 342 | CpuState = GetApState (CpuData);\r | |
| 343 | if (CpuState != CpuStateIdle) {\r | |
| 344 | if (mMpSystemData.FailedList != NULL) {\r | |
| 345 | (*mMpSystemData.FailedList)[mMpSystemData.FailedListIndex++] = Number;\r | |
| 346 | }\r | |
| 347 | ResetProcessorToIdleState (CpuData);\r | |
| 348 | }\r | |
| 349 | }\r | |
| 350 | \r | |
| 351 | if (mMpSystemData.FailedList != NULL) {\r | |
| 352 | (*mMpSystemData.FailedList)[mMpSystemData.FailedListIndex] = END_OF_CPU_LIST;\r | |
| 353 | }\r | |
| 354 | }\r | |
| 355 | \r | |
| d894d8b7 CF |
356 | /**\r |
| 357 | This service retrieves the number of logical processor in the platform\r | |
| 358 | and the number of those logical processors that are enabled on this boot.\r | |
| 359 | This service may only be called from the BSP.\r | |
| 360 | \r | |
| 361 | This function is used to retrieve the following information:\r | |
| 362 | - The number of logical processors that are present in the system.\r | |
| 363 | - The number of enabled logical processors in the system at the instant\r | |
| 364 | this call is made.\r | |
| 365 | \r | |
| 366 | Because MP Service Protocol provides services to enable and disable processors\r | |
| 367 | dynamically, the number of enabled logical processors may vary during the\r | |
| 368 | course of a boot session.\r | |
| 369 | \r | |
| 370 | If this service is called from an AP, then EFI_DEVICE_ERROR is returned.\r | |
| 371 | If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then\r | |
| 372 | EFI_INVALID_PARAMETER is returned. Otherwise, the total number of processors\r | |
| 373 | is returned in NumberOfProcessors, the number of currently enabled processor\r | |
| 374 | is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned.\r | |
| 375 | \r | |
| 376 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
| 377 | instance.\r | |
| 378 | @param[out] NumberOfProcessors Pointer to the total number of logical\r | |
| 379 | processors in the system, including the BSP\r | |
| 380 | and disabled APs.\r | |
| 381 | @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical\r | |
| 382 | processors that exist in system, including\r | |
| 383 | the BSP.\r | |
| 384 | \r | |
| 385 | @retval EFI_SUCCESS The number of logical processors and enabled\r | |
| 386 | logical processors was retrieved.\r | |
| 387 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
| 388 | @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL.\r | |
| 389 | @retval EFI_INVALID_PARAMETER NumberOfEnabledProcessors is NULL.\r | |
| 390 | \r | |
| 391 | **/\r | |
| 392 | EFI_STATUS\r | |
| 393 | EFIAPI\r | |
| 394 | GetNumberOfProcessors (\r | |
| 395 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 396 | OUT UINTN *NumberOfProcessors,\r | |
| 397 | OUT UINTN *NumberOfEnabledProcessors\r | |
| 398 | )\r | |
| 399 | {\r | |
| 400 | if ((NumberOfProcessors == NULL) || (NumberOfEnabledProcessors == NULL)) {\r | |
| 401 | return EFI_INVALID_PARAMETER;\r | |
| 402 | }\r | |
| 403 | \r | |
| 404 | if (!IsBSP ()) {\r | |
| 405 | return EFI_DEVICE_ERROR;\r | |
| 406 | }\r | |
| 407 | \r | |
| 408 | *NumberOfProcessors = mMpSystemData.NumberOfProcessors;\r | |
| 409 | *NumberOfEnabledProcessors = mMpSystemData.NumberOfEnabledProcessors;\r | |
| 410 | return EFI_SUCCESS;\r | |
| 411 | }\r | |
| 412 | \r | |
| e7938b5a CF |
413 | /**\r |
| 414 | Gets detailed MP-related information on the requested processor at the\r | |
| 415 | instant this call is made. This service may only be called from the BSP.\r | |
| 416 | \r | |
| 417 | This service retrieves detailed MP-related information about any processor\r | |
| 418 | on the platform. Note the following:\r | |
| 419 | - The processor information may change during the course of a boot session.\r | |
| 420 | - The information presented here is entirely MP related.\r | |
| 421 | \r | |
| 422 | Information regarding the number of caches and their sizes, frequency of operation,\r | |
| 423 | slot numbers is all considered platform-related information and is not provided\r | |
| 424 | by this service.\r | |
| 425 | \r | |
| 426 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
| 427 | instance.\r | |
| 428 | @param[in] ProcessorNumber The handle number of processor.\r | |
| 429 | @param[out] ProcessorInfoBuffer A pointer to the buffer where information for\r | |
| 430 | the requested processor is deposited.\r | |
| 431 | \r | |
| 432 | @retval EFI_SUCCESS Processor information was returned.\r | |
| 433 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
| 434 | @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.\r | |
| 435 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
| 436 | ProcessorNumber does not exist in the platform.\r | |
| 437 | \r | |
| 438 | **/\r | |
| 439 | EFI_STATUS\r | |
| 440 | EFIAPI\r | |
| 441 | GetProcessorInfo (\r | |
| 442 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 443 | IN UINTN ProcessorNumber,\r | |
| 444 | OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer\r | |
| 445 | )\r | |
| 446 | {\r | |
| 447 | if (ProcessorInfoBuffer == NULL) {\r | |
| 448 | return EFI_INVALID_PARAMETER;\r | |
| 449 | }\r | |
| 450 | \r | |
| 451 | if (!IsBSP ()) {\r | |
| 452 | return EFI_DEVICE_ERROR;\r | |
| 453 | }\r | |
| 454 | \r | |
| 455 | if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {\r | |
| 456 | return EFI_NOT_FOUND;\r | |
| 457 | }\r | |
| 458 | \r | |
| 459 | CopyMem (ProcessorInfoBuffer, &mMpSystemData.CpuDatas[ProcessorNumber], sizeof (EFI_PROCESSOR_INFORMATION));\r | |
| 460 | return EFI_SUCCESS;\r | |
| 461 | }\r | |
| 462 | \r | |
| 5fee172f CF |
463 | /**\r |
| 464 | This service executes a caller provided function on all enabled APs. APs can\r | |
| 465 | run either simultaneously or one at a time in sequence. This service supports\r | |
| 466 | both blocking and non-blocking requests. The non-blocking requests use EFI\r | |
| 467 | events so the BSP can detect when the APs have finished. This service may only\r | |
| 468 | be called from the BSP.\r | |
| 469 | \r | |
| 470 | This function is used to dispatch all the enabled APs to the function specified\r | |
| 471 | by Procedure. If any enabled AP is busy, then EFI_NOT_READY is returned\r | |
| 472 | immediately and Procedure is not started on any AP.\r | |
| 473 | \r | |
| 474 | If SingleThread is TRUE, all the enabled APs execute the function specified by\r | |
| 475 | Procedure one by one, in ascending order of processor handle number. Otherwise,\r | |
| 476 | all the enabled APs execute the function specified by Procedure simultaneously.\r | |
| 477 | \r | |
| 478 | If WaitEvent is NULL, execution is in blocking mode. The BSP waits until all\r | |
| 479 | APs finish or TimeoutInMicroseconds expires. Otherwise, execution is in non-blocking\r | |
| 480 | mode, and the BSP returns from this service without waiting for APs. If a\r | |
| 481 | non-blocking mode is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r | |
| 482 | is signaled, then EFI_UNSUPPORTED must be returned.\r | |
| 483 | \r | |
| 484 | If the timeout specified by TimeoutInMicroseconds expires before all APs return\r | |
| 485 | from Procedure, then Procedure on the failed APs is terminated. All enabled APs\r | |
| 486 | are always available for further calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
| 487 | and EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). If FailedCpuList is not NULL, its\r | |
| 488 | content points to the list of processor handle numbers in which Procedure was\r | |
| 489 | terminated.\r | |
| 490 | \r | |
| 491 | Note: It is the responsibility of the consumer of the EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
| 492 | to make sure that the nature of the code that is executed on the BSP and the\r | |
| 493 | dispatched APs is well controlled. The MP Services Protocol does not guarantee\r | |
| 494 | that the Procedure function is MP-safe. Hence, the tasks that can be run in\r | |
| 495 | parallel are limited to certain independent tasks and well-controlled exclusive\r | |
| 496 | code. EFI services and protocols may not be called by APs unless otherwise\r | |
| 497 | specified.\r | |
| 498 | \r | |
| 499 | In blocking execution mode, BSP waits until all APs finish or\r | |
| 500 | TimeoutInMicroseconds expires.\r | |
| 501 | \r | |
| 502 | In non-blocking execution mode, BSP is freed to return to the caller and then\r | |
| 503 | proceed to the next task without having to wait for APs. The following\r | |
| 504 | sequence needs to occur in a non-blocking execution mode:\r | |
| 505 | \r | |
| 506 | -# The caller that intends to use this MP Services Protocol in non-blocking\r | |
| 507 | mode creates WaitEvent by calling the EFI CreateEvent() service. The caller\r | |
| 508 | invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the parameter WaitEvent\r | |
| 509 | is not NULL, then StartupAllAPs() executes in non-blocking mode. It requests\r | |
| 510 | the function specified by Procedure to be started on all the enabled APs,\r | |
| 511 | and releases the BSP to continue with other tasks.\r | |
| 512 | -# The caller can use the CheckEvent() and WaitForEvent() services to check\r | |
| 513 | the state of the WaitEvent created in step 1.\r | |
| 514 | -# When the APs complete their task or TimeoutInMicroSecondss expires, the MP\r | |
| 515 | Service signals WaitEvent by calling the EFI SignalEvent() function. If\r | |
| 516 | FailedCpuList is not NULL, its content is available when WaitEvent is\r | |
| 517 | signaled. If all APs returned from Procedure prior to the timeout, then\r | |
| 518 | FailedCpuList is set to NULL. If not all APs return from Procedure before\r | |
| 519 | the timeout, then FailedCpuList is filled in with the list of the failed\r | |
| 520 | APs. The buffer is allocated by MP Service Protocol using AllocatePool().\r | |
| 521 | It is the caller's responsibility to free the buffer with FreePool() service.\r | |
| 522 | -# This invocation of SignalEvent() function informs the caller that invoked\r | |
| 523 | EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() that either all the APs completed\r | |
| 524 | the specified task or a timeout occurred. The contents of FailedCpuList\r | |
| 525 | can be examined to determine which APs did not complete the specified task\r | |
| 526 | prior to the timeout.\r | |
| 527 | \r | |
| 528 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
| 529 | instance.\r | |
| 530 | @param[in] Procedure A pointer to the function to be run on\r | |
| 531 | enabled APs of the system. See type\r | |
| 532 | EFI_AP_PROCEDURE.\r | |
| 533 | @param[in] SingleThread If TRUE, then all the enabled APs execute\r | |
| 534 | the function specified by Procedure one by\r | |
| 535 | one, in ascending order of processor handle\r | |
| 536 | number. If FALSE, then all the enabled APs\r | |
| 537 | execute the function specified by Procedure\r | |
| 538 | simultaneously.\r | |
| 539 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
| 540 | service. If it is NULL, then execute in\r | |
| 541 | blocking mode. BSP waits until all APs finish\r | |
| 542 | or TimeoutInMicroseconds expires. If it's\r | |
| 543 | not NULL, then execute in non-blocking mode.\r | |
| 544 | BSP requests the function specified by\r | |
| 545 | Procedure to be started on all the enabled\r | |
| 546 | APs, and go on executing immediately. If\r | |
| 547 | all return from Procedure, or TimeoutInMicroseconds\r | |
| 548 | expires, this event is signaled. The BSP\r | |
| 549 | can use the CheckEvent() or WaitForEvent()\r | |
| 550 | services to check the state of event. Type\r | |
| 551 | EFI_EVENT is defined in CreateEvent() in\r | |
| 552 | the Unified Extensible Firmware Interface\r | |
| 553 | Specification.\r | |
| 554 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r | |
| 555 | APs to return from Procedure, either for\r | |
| 556 | blocking or non-blocking mode. Zero means\r | |
| 557 | infinity. If the timeout expires before\r | |
| 558 | all APs return from Procedure, then Procedure\r | |
| 559 | on the failed APs is terminated. All enabled\r | |
| 560 | APs are available for next function assigned\r | |
| 561 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
| 562 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r | |
| 563 | If the timeout expires in blocking mode,\r | |
| 564 | BSP returns EFI_TIMEOUT. If the timeout\r | |
| 565 | expires in non-blocking mode, WaitEvent\r | |
| 566 | is signaled with SignalEvent().\r | |
| 567 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
| 568 | all APs.\r | |
| 569 | @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,\r | |
| 570 | if all APs finish successfully, then its\r | |
| 571 | content is set to NULL. If not all APs\r | |
| 572 | finish before timeout expires, then its\r | |
| 573 | content is set to address of the buffer\r | |
| 574 | holding handle numbers of the failed APs.\r | |
| 575 | The buffer is allocated by MP Service Protocol,\r | |
| 576 | and it's the caller's responsibility to\r | |
| 577 | free the buffer with FreePool() service.\r | |
| 578 | In blocking mode, it is ready for consumption\r | |
| 579 | when the call returns. In non-blocking mode,\r | |
| 580 | it is ready when WaitEvent is signaled. The\r | |
| 581 | list of failed CPU is terminated by\r | |
| 582 | END_OF_CPU_LIST.\r | |
| 583 | \r | |
| 584 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r | |
| 585 | the timeout expired.\r | |
| 586 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r | |
| 587 | to all enabled APs.\r | |
| 588 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
| 589 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
| 590 | signaled.\r | |
| 591 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
| 592 | @retval EFI_NOT_STARTED No enabled APs exist in the system.\r | |
| 593 | @retval EFI_NOT_READY Any enabled APs are busy.\r | |
| 594 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
| 595 | all enabled APs have finished.\r | |
| 596 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
| 597 | \r | |
| 598 | **/\r | |
| 599 | EFI_STATUS\r | |
| 600 | EFIAPI\r | |
| 601 | StartupAllAPs (\r | |
| 602 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 603 | IN EFI_AP_PROCEDURE Procedure,\r | |
| 604 | IN BOOLEAN SingleThread,\r | |
| 605 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
| 606 | IN UINTN TimeoutInMicroseconds,\r | |
| 607 | IN VOID *ProcedureArgument OPTIONAL,\r | |
| 608 | OUT UINTN **FailedCpuList OPTIONAL\r | |
| 609 | )\r | |
| 610 | {\r | |
| 611 | EFI_STATUS Status;\r | |
| 612 | CPU_DATA_BLOCK *CpuData;\r | |
| 613 | UINTN Number;\r | |
| 614 | CPU_STATE APInitialState;\r | |
| 615 | \r | |
| 616 | CpuData = NULL;\r | |
| 617 | \r | |
| 618 | if (FailedCpuList != NULL) {\r | |
| 619 | *FailedCpuList = NULL;\r | |
| 620 | }\r | |
| 621 | \r | |
| 622 | if (!IsBSP ()) {\r | |
| 623 | return EFI_DEVICE_ERROR;\r | |
| 624 | }\r | |
| 625 | \r | |
| 626 | if (mMpSystemData.NumberOfProcessors == 1) {\r | |
| 627 | return EFI_NOT_STARTED;\r | |
| 628 | }\r | |
| 629 | \r | |
| 630 | if (Procedure == NULL) {\r | |
| 631 | return EFI_INVALID_PARAMETER;\r | |
| 632 | }\r | |
| 633 | \r | |
| 634 | for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {\r | |
| 635 | CpuData = &mMpSystemData.CpuDatas[Number];\r | |
| 636 | if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {\r | |
| 637 | //\r | |
| 638 | // Skip BSP\r | |
| 639 | //\r | |
| 640 | continue;\r | |
| 641 | }\r | |
| 642 | \r | |
| 643 | if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {\r | |
| 644 | //\r | |
| 645 | // Skip Disabled processors\r | |
| 646 | //\r | |
| 647 | continue;\r | |
| 648 | }\r | |
| 649 | \r | |
| 650 | if (GetApState (CpuData) != CpuStateIdle) {\r | |
| 651 | return EFI_NOT_READY;\r | |
| 652 | }\r | |
| 653 | }\r | |
| 654 | \r | |
| acb2172d CF |
655 | //\r |
| 656 | // temporarily stop checkAllAPsStatus for initialize parameters.\r | |
| 657 | //\r | |
| 658 | mStopCheckAllAPsStatus = TRUE;\r | |
| 659 | \r | |
| 5fee172f CF |
660 | mMpSystemData.Procedure = Procedure;\r |
| 661 | mMpSystemData.ProcedureArgument = ProcedureArgument;\r | |
| 662 | mMpSystemData.WaitEvent = WaitEvent;\r | |
| 663 | mMpSystemData.Timeout = TimeoutInMicroseconds;\r | |
| 664 | mMpSystemData.TimeoutActive = !!(TimeoutInMicroseconds);\r | |
| 665 | mMpSystemData.FinishCount = 0;\r | |
| 666 | mMpSystemData.StartCount = 0;\r | |
| 667 | mMpSystemData.SingleThread = SingleThread;\r | |
| 668 | mMpSystemData.FailedList = FailedCpuList;\r | |
| 669 | mMpSystemData.FailedListIndex = 0;\r | |
| 670 | APInitialState = CpuStateReady;\r | |
| 671 | \r | |
| 672 | for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {\r | |
| 673 | CpuData = &mMpSystemData.CpuDatas[Number];\r | |
| 674 | if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {\r | |
| 675 | //\r | |
| 676 | // Skip BSP\r | |
| 677 | //\r | |
| 678 | continue;\r | |
| 679 | }\r | |
| 680 | \r | |
| 681 | if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {\r | |
| 682 | //\r | |
| 683 | // Skip Disabled processors\r | |
| 684 | //\r | |
| 685 | continue;\r | |
| 686 | }\r | |
| 687 | \r | |
| 688 | //\r | |
| 689 | // Get APs prepared, and put failing APs into FailedCpuList\r | |
| 690 | // if "SingleThread", only 1 AP will put to ready state, other AP will be put to ready\r | |
| 691 | // state 1 by 1, until the previous 1 finished its task\r | |
| 692 | // if not "SingleThread", all APs are put to ready state from the beginning\r | |
| 693 | //\r | |
| 694 | if (GetApState (CpuData) == CpuStateIdle) {\r | |
| 695 | mMpSystemData.StartCount++;\r | |
| 696 | \r | |
| 697 | SetApState (CpuData, APInitialState);\r | |
| 698 | \r | |
| 699 | if (APInitialState == CpuStateReady) {\r | |
| 700 | SetApProcedure (CpuData, Procedure, ProcedureArgument);\r | |
| 701 | }\r | |
| 702 | \r | |
| 703 | if (SingleThread) {\r | |
| 704 | APInitialState = CpuStateBlocked;\r | |
| 705 | }\r | |
| 706 | }\r | |
| 707 | }\r | |
| 708 | \r | |
| acb2172d CF |
709 | mStopCheckAllAPsStatus = FALSE;\r |
| 710 | \r | |
| 5fee172f | 711 | if (WaitEvent != NULL) {\r |
| acb2172d CF |
712 | //\r |
| 713 | // non blocking\r | |
| 714 | //\r | |
| 715 | return EFI_SUCCESS;\r | |
| 5fee172f CF |
716 | }\r |
| 717 | \r | |
| 718 | while (TRUE) {\r | |
| 719 | CheckAndUpdateAllAPsToIdleState ();\r | |
| 720 | if (mMpSystemData.FinishCount == mMpSystemData.StartCount) {\r | |
| 721 | Status = EFI_SUCCESS;\r | |
| 722 | goto Done;\r | |
| 723 | }\r | |
| 724 | \r | |
| 725 | //\r | |
| 726 | // task timeout\r | |
| 727 | //\r | |
| 728 | if (mMpSystemData.TimeoutActive && mMpSystemData.Timeout < 0) {\r | |
| 729 | ResetAllFailedAPs();\r | |
| 730 | Status = EFI_TIMEOUT;\r | |
| 731 | goto Done;\r | |
| 732 | }\r | |
| 733 | \r | |
| 734 | gBS->Stall (gPollInterval);\r | |
| 735 | mMpSystemData.Timeout -= gPollInterval;\r | |
| 736 | }\r | |
| 737 | \r | |
| 738 | Done:\r | |
| 739 | \r | |
| 740 | return Status;\r | |
| 741 | }\r | |
| 742 | \r | |
| 3f4f0af8 CF |
743 | /**\r |
| 744 | This service lets the caller get one enabled AP to execute a caller-provided\r | |
| 745 | function. The caller can request the BSP to either wait for the completion\r | |
| 746 | of the AP or just proceed with the next task by using the EFI event mechanism.\r | |
| 747 | See EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() for more details on non-blocking\r | |
| 748 | execution support. This service may only be called from the BSP.\r | |
| 749 | \r | |
| 750 | This function is used to dispatch one enabled AP to the function specified by\r | |
| 751 | Procedure passing in the argument specified by ProcedureArgument. If WaitEvent\r | |
| 752 | is NULL, execution is in blocking mode. The BSP waits until the AP finishes or\r | |
| 753 | TimeoutInMicroSecondss expires. Otherwise, execution is in non-blocking mode.\r | |
| 754 | BSP proceeds to the next task without waiting for the AP. If a non-blocking mode\r | |
| 755 | is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled,\r | |
| 756 | then EFI_UNSUPPORTED must be returned.\r | |
| 757 | \r | |
| 758 | If the timeout specified by TimeoutInMicroseconds expires before the AP returns\r | |
| 759 | from Procedure, then execution of Procedure by the AP is terminated. The AP is\r | |
| 760 | available for subsequent calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() and\r | |
| 761 | EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r | |
| 762 | \r | |
| 763 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
| 764 | instance.\r | |
| 765 | @param[in] Procedure A pointer to the function to be run on\r | |
| 766 | enabled APs of the system. See type\r | |
| 767 | EFI_AP_PROCEDURE.\r | |
| 768 | @param[in] ProcessorNumber The handle number of the AP. The range is\r | |
| 769 | from 0 to the total number of logical\r | |
| 770 | processors minus 1. The total number of\r | |
| 771 | logical processors can be retrieved by\r | |
| 772 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
| 773 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
| 774 | service. If it is NULL, then execute in\r | |
| 775 | blocking mode. BSP waits until all APs finish\r | |
| 776 | or TimeoutInMicroseconds expires. If it's\r | |
| 777 | not NULL, then execute in non-blocking mode.\r | |
| 778 | BSP requests the function specified by\r | |
| 779 | Procedure to be started on all the enabled\r | |
| 780 | APs, and go on executing immediately. If\r | |
| 781 | all return from Procedure or TimeoutInMicroseconds\r | |
| 782 | expires, this event is signaled. The BSP\r | |
| 783 | can use the CheckEvent() or WaitForEvent()\r | |
| 784 | services to check the state of event. Type\r | |
| 785 | EFI_EVENT is defined in CreateEvent() in\r | |
| 786 | the Unified Extensible Firmware Interface\r | |
| 787 | Specification.\r | |
| 788 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r | |
| 789 | APs to return from Procedure, either for\r | |
| 790 | blocking or non-blocking mode. Zero means\r | |
| 791 | infinity. If the timeout expires before\r | |
| 792 | all APs return from Procedure, then Procedure\r | |
| 793 | on the failed APs is terminated. All enabled\r | |
| 794 | APs are available for next function assigned\r | |
| 795 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
| 796 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r | |
| 797 | If the timeout expires in blocking mode,\r | |
| 798 | BSP returns EFI_TIMEOUT. If the timeout\r | |
| 799 | expires in non-blocking mode, WaitEvent\r | |
| 800 | is signaled with SignalEvent().\r | |
| 801 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
| 802 | all APs.\r | |
| 803 | @param[out] Finished If NULL, this parameter is ignored. In\r | |
| 804 | blocking mode, this parameter is ignored.\r | |
| 805 | In non-blocking mode, if AP returns from\r | |
| 806 | Procedure before the timeout expires, its\r | |
| 807 | content is set to TRUE. Otherwise, the\r | |
| 808 | value is set to FALSE. The caller can\r | |
| 809 | determine if the AP returned from Procedure\r | |
| 810 | by evaluating this value.\r | |
| 811 | \r | |
| 812 | @retval EFI_SUCCESS In blocking mode, specified AP finished before\r | |
| 813 | the timeout expires.\r | |
| 814 | @retval EFI_SUCCESS In non-blocking mode, the function has been\r | |
| 815 | dispatched to specified AP.\r | |
| 816 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
| 817 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
| 818 | signaled.\r | |
| 819 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
| 820 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
| 821 | the specified AP has finished.\r | |
| 822 | @retval EFI_NOT_READY The specified AP is busy.\r | |
| 823 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
| 824 | ProcessorNumber does not exist.\r | |
| 825 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
| 826 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
| 827 | \r | |
| 828 | **/\r | |
| 829 | EFI_STATUS\r | |
| 830 | EFIAPI\r | |
| 831 | StartupThisAP (\r | |
| 832 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 833 | IN EFI_AP_PROCEDURE Procedure,\r | |
| 834 | IN UINTN ProcessorNumber,\r | |
| 835 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
| 836 | IN UINTN TimeoutInMicroseconds,\r | |
| 837 | IN VOID *ProcedureArgument OPTIONAL,\r | |
| 838 | OUT BOOLEAN *Finished OPTIONAL\r | |
| 839 | )\r | |
| 840 | {\r | |
| 841 | CPU_DATA_BLOCK *CpuData;\r | |
| 3f4f0af8 CF |
842 | \r |
| 843 | CpuData = NULL;\r | |
| 844 | \r | |
| 845 | if (Finished != NULL) {\r | |
| 846 | *Finished = FALSE;\r | |
| 847 | }\r | |
| 848 | \r | |
| 849 | if (!IsBSP ()) {\r | |
| 850 | return EFI_DEVICE_ERROR;\r | |
| 851 | }\r | |
| 852 | \r | |
| 853 | if (Procedure == NULL) {\r | |
| 854 | return EFI_INVALID_PARAMETER;\r | |
| 855 | }\r | |
| 856 | \r | |
| 857 | if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {\r | |
| 858 | return EFI_NOT_FOUND;\r | |
| 859 | }\r | |
| 860 | \r | |
| 861 | CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];\r | |
| 862 | if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT) ||\r | |
| 863 | !TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {\r | |
| 864 | return EFI_INVALID_PARAMETER;\r | |
| 865 | }\r | |
| 866 | \r | |
| 867 | if (GetApState (CpuData) != CpuStateIdle) {\r | |
| 868 | return EFI_NOT_READY;\r | |
| 869 | }\r | |
| 870 | \r | |
| acb2172d CF |
871 | //\r |
| 872 | // temporarily stop checkAllAPsStatus for initialize parameters.\r | |
| 873 | //\r | |
| 874 | mStopCheckAllAPsStatus = TRUE;\r | |
| 875 | \r | |
| 3f4f0af8 CF |
876 | SetApState (CpuData, CpuStateReady);\r |
| 877 | \r | |
| 878 | SetApProcedure (CpuData, Procedure, ProcedureArgument);\r | |
| 879 | \r | |
| 880 | CpuData->Timeout = TimeoutInMicroseconds;\r | |
| 881 | CpuData->WaitEvent = WaitEvent;\r | |
| 882 | CpuData->TimeoutActive = !!(TimeoutInMicroseconds);\r | |
| 883 | CpuData->Finished = Finished;\r | |
| 884 | \r | |
| acb2172d CF |
885 | mStopCheckAllAPsStatus = FALSE;\r |
| 886 | \r | |
| 3f4f0af8 CF |
887 | if (WaitEvent != NULL) {\r |
| 888 | //\r | |
| 889 | // Non Blocking\r | |
| 890 | //\r | |
| acb2172d | 891 | return EFI_SUCCESS;\r |
| 3f4f0af8 CF |
892 | }\r |
| 893 | \r | |
| 894 | //\r | |
| 895 | // Blocking\r | |
| 896 | //\r | |
| 897 | while (TRUE) {\r | |
| 898 | if (GetApState (CpuData) == CpuStateFinished) {\r | |
| 899 | SetApState (CpuData, CpuStateIdle);\r | |
| 900 | break;\r | |
| 901 | }\r | |
| 902 | \r | |
| 903 | if (CpuData->TimeoutActive && CpuData->Timeout < 0) {\r | |
| 904 | ResetProcessorToIdleState (CpuData);\r | |
| 905 | return EFI_TIMEOUT;\r | |
| 906 | }\r | |
| 907 | \r | |
| 908 | gBS->Stall (gPollInterval);\r | |
| 909 | CpuData->Timeout -= gPollInterval;\r | |
| 910 | }\r | |
| 911 | \r | |
| 912 | return EFI_SUCCESS;\r | |
| 913 | }\r | |
| 914 | \r | |
| b7c05ba5 CF |
915 | /**\r |
| 916 | This service switches the requested AP to be the BSP from that point onward.\r | |
| 917 | This service changes the BSP for all purposes. This call can only be performed\r | |
| 918 | by the current BSP.\r | |
| 919 | \r | |
| 920 | This service switches the requested AP to be the BSP from that point onward.\r | |
| 921 | This service changes the BSP for all purposes. The new BSP can take over the\r | |
| 922 | execution of the old BSP and continue seamlessly from where the old one left\r | |
| 923 | off. This service may not be supported after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r | |
| 924 | is signaled.\r | |
| 925 | \r | |
| 926 | If the BSP cannot be switched prior to the return from this service, then\r | |
| 927 | EFI_UNSUPPORTED must be returned.\r | |
| 928 | \r | |
| 929 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
| 930 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r | |
| 931 | BSP. The range is from 0 to the total number of\r | |
| 932 | logical processors minus 1. The total number of\r | |
| 933 | logical processors can be retrieved by\r | |
| 934 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
| 935 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r | |
| 936 | enabled AP. Otherwise, it will be disabled.\r | |
| 937 | \r | |
| 938 | @retval EFI_SUCCESS BSP successfully switched.\r | |
| 939 | @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to\r | |
| 940 | this service returning.\r | |
| 941 | @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r | |
| 942 | @retval EFI_SUCCESS The calling processor is an AP.\r | |
| 943 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
| 944 | ProcessorNumber does not exist.\r | |
| 945 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or\r | |
| 946 | a disabled AP.\r | |
| 947 | @retval EFI_NOT_READY The specified AP is busy.\r | |
| 948 | \r | |
| 949 | **/\r | |
| 950 | EFI_STATUS\r | |
| 951 | EFIAPI\r | |
| 952 | SwitchBSP (\r | |
| 953 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 954 | IN UINTN ProcessorNumber,\r | |
| 955 | IN BOOLEAN EnableOldBSP\r | |
| 956 | )\r | |
| 957 | {\r | |
| 958 | //\r | |
| 959 | // Current always return unsupported.\r | |
| 960 | //\r | |
| 961 | return EFI_UNSUPPORTED;\r | |
| 962 | }\r | |
| 963 | \r | |
| fa7ce675 CF |
964 | /**\r |
| 965 | This service lets the caller enable or disable an AP from this point onward.\r | |
| 966 | This service may only be called from the BSP.\r | |
| 967 | \r | |
| 968 | This service allows the caller enable or disable an AP from this point onward.\r | |
| 969 | The caller can optionally specify the health status of the AP by Health. If\r | |
| 970 | an AP is being disabled, then the state of the disabled AP is implementation\r | |
| 971 | dependent. If an AP is enabled, then the implementation must guarantee that a\r | |
| 972 | complete initialization sequence is performed on the AP, so the AP is in a state\r | |
| 973 | that is compatible with an MP operating system. This service may not be supported\r | |
| 974 | after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled.\r | |
| 975 | \r | |
| 976 | If the enable or disable AP operation cannot be completed prior to the return\r | |
| 977 | from this service, then EFI_UNSUPPORTED must be returned.\r | |
| 978 | \r | |
| 979 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
| 980 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r | |
| 981 | BSP. The range is from 0 to the total number of\r | |
| 982 | logical processors minus 1. The total number of\r | |
| 983 | logical processors can be retrieved by\r | |
| 984 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
| 985 | @param[in] EnableAP Specifies the new state for the processor for\r | |
| 986 | enabled, FALSE for disabled.\r | |
| 987 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies\r | |
| 988 | the new health status of the AP. This flag\r | |
| 989 | corresponds to StatusFlag defined in\r | |
| 990 | EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only\r | |
| 991 | the PROCESSOR_HEALTH_STATUS_BIT is used. All other\r | |
| 992 | bits are ignored. If it is NULL, this parameter\r | |
| 993 | is ignored.\r | |
| 994 | \r | |
| 995 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
| 996 | @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed\r | |
| 997 | prior to this service returning.\r | |
| 998 | @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.\r | |
| 999 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
| 1000 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber\r | |
| 1001 | does not exist.\r | |
| 1002 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.\r | |
| 1003 | \r | |
| 1004 | **/\r | |
| 1005 | EFI_STATUS\r | |
| 1006 | EFIAPI\r | |
| 1007 | EnableDisableAP (\r | |
| 1008 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 1009 | IN UINTN ProcessorNumber,\r | |
| 1010 | IN BOOLEAN EnableAP,\r | |
| 1011 | IN UINT32 *HealthFlag OPTIONAL\r | |
| 1012 | )\r | |
| 1013 | {\r | |
| 1014 | CPU_DATA_BLOCK *CpuData;\r | |
| 1015 | \r | |
| 1016 | if (!IsBSP ()) {\r | |
| 1017 | return EFI_DEVICE_ERROR;\r | |
| 1018 | }\r | |
| 1019 | \r | |
| 1020 | if (ProcessorNumber >= mMpSystemData.NumberOfProcessors) {\r | |
| 1021 | return EFI_NOT_FOUND;\r | |
| 1022 | }\r | |
| 1023 | \r | |
| 1024 | CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];\r | |
| 1025 | if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {\r | |
| 1026 | return EFI_INVALID_PARAMETER;\r | |
| 1027 | }\r | |
| 1028 | \r | |
| 1029 | if (GetApState (CpuData) != CpuStateIdle) {\r | |
| 1030 | return EFI_UNSUPPORTED;\r | |
| 1031 | }\r | |
| 1032 | \r | |
| 1033 | if (EnableAP) {\r | |
| 1034 | if (!(TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT))) {\r | |
| 1035 | mMpSystemData.NumberOfEnabledProcessors++;\r | |
| 1036 | }\r | |
| 1037 | CpuStatusFlagOr (CpuData, PROCESSOR_ENABLED_BIT);\r | |
| 1038 | } else {\r | |
| 1039 | if (TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {\r | |
| 1040 | mMpSystemData.NumberOfEnabledProcessors--;\r | |
| 1041 | }\r | |
| 1042 | CpuStatusFlagAndNot (CpuData, PROCESSOR_ENABLED_BIT);\r | |
| 1043 | }\r | |
| 1044 | \r | |
| 1045 | if (HealthFlag != NULL) {\r | |
| 1046 | CpuStatusFlagAndNot (CpuData, (UINT32)~PROCESSOR_HEALTH_STATUS_BIT);\r | |
| 1047 | CpuStatusFlagOr (CpuData, (*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT));\r | |
| 1048 | }\r | |
| 1049 | \r | |
| 1050 | return EFI_SUCCESS;\r | |
| 1051 | }\r | |
| 1052 | \r | |
| cfa2fac1 CF |
1053 | /**\r |
| 1054 | This return the handle number for the calling processor. This service may be\r | |
| 1055 | called from the BSP and APs.\r | |
| 1056 | \r | |
| 1057 | This service returns the processor handle number for the calling processor.\r | |
| 1058 | The returned value is in the range from 0 to the total number of logical\r | |
| 1059 | processors minus 1. The total number of logical processors can be retrieved\r | |
| 1060 | with EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). This service may be\r | |
| 1061 | called from the BSP and APs. If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER\r | |
| 1062 | is returned. Otherwise, the current processors handle number is returned in\r | |
| 1063 | ProcessorNumber, and EFI_SUCCESS is returned.\r | |
| 1064 | \r | |
| 1065 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
| 1066 | @param[out] ProcessorNumber The handle number of AP that is to become the new\r | |
| 1067 | BSP. The range is from 0 to the total number of\r | |
| 1068 | logical processors minus 1. The total number of\r | |
| 1069 | logical processors can be retrieved by\r | |
| 1070 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
| 1071 | \r | |
| 1072 | @retval EFI_SUCCESS The current processor handle number was returned\r | |
| 1073 | in ProcessorNumber.\r | |
| 1074 | @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.\r | |
| 1075 | \r | |
| 1076 | **/\r | |
| 1077 | EFI_STATUS\r | |
| 1078 | EFIAPI\r | |
| 1079 | WhoAmI (\r | |
| 1080 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 1081 | OUT UINTN *ProcessorNumber\r | |
| 1082 | )\r | |
| 1083 | {\r | |
| 1084 | UINTN Index;\r | |
| 1085 | UINT32 ProcessorId;\r | |
| 1086 | \r | |
| 1087 | if (ProcessorNumber == NULL) {\r | |
| 1088 | return EFI_INVALID_PARAMETER;\r | |
| 1089 | }\r | |
| 1090 | \r | |
| 1091 | ProcessorId = GetApicId ();\r | |
| 1092 | for (Index = 0; Index < mMpSystemData.NumberOfProcessors; Index++) {\r | |
| 1093 | if (mMpSystemData.CpuDatas[Index].Info.ProcessorId == ProcessorId) {\r | |
| 1094 | break;\r | |
| 1095 | }\r | |
| 1096 | }\r | |
| 1097 | \r | |
| 1098 | *ProcessorNumber = Index;\r | |
| 1099 | return EFI_SUCCESS;\r | |
| 1100 | }\r | |
| 1101 | \r | |
| 3f4f0af8 CF |
1102 | /**\r |
| 1103 | Terminate AP's task and set it to idle state.\r | |
| 1104 | \r | |
| 1105 | This function terminates AP's task due to timeout by sending INIT-SIPI,\r | |
| 1106 | and sends it to idle state.\r | |
| 1107 | \r | |
| 1108 | @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r | |
| 1109 | \r | |
| 1110 | **/\r | |
| 1111 | VOID\r | |
| 1112 | ResetProcessorToIdleState (\r | |
| 1113 | IN CPU_DATA_BLOCK *CpuData\r | |
| 1114 | )\r | |
| 1115 | {\r | |
| ac9dbb3b | 1116 | ResetApStackless ((UINT32)CpuData->Info.ProcessorId);\r |
| 3f4f0af8 CF |
1117 | }\r |
| 1118 | \r | |
| e343f8f7 CF |
1119 | /**\r |
| 1120 | Application Processors do loop routine\r | |
| 1121 | after switch to its own stack.\r | |
| 1122 | \r | |
| 1123 | @param Context1 A pointer to the context to pass into the function.\r | |
| 1124 | @param Context2 A pointer to the context to pass into the function.\r | |
| 1125 | \r | |
| 1126 | **/\r | |
| 1127 | VOID\r | |
| 1128 | ProcessorToIdleState (\r | |
| 1129 | IN VOID *Context1, OPTIONAL\r | |
| 1130 | IN VOID *Context2 OPTIONAL\r | |
| 1131 | )\r | |
| 1132 | {\r | |
| 9908a829 CF |
1133 | UINTN ProcessorNumber;\r |
| 1134 | CPU_DATA_BLOCK *CpuData;\r | |
| 1135 | EFI_AP_PROCEDURE Procedure;\r | |
| 1136 | VOID *ProcedureArgument;\r | |
| 1137 | \r | |
| 1138 | WhoAmI (&mMpServicesTemplate, &ProcessorNumber);\r | |
| 1139 | CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];\r | |
| e343f8f7 CF |
1140 | \r |
| 1141 | AsmApDoneWithCommonStack ();\r | |
| 1142 | \r | |
| ac9dbb3b CF |
1143 | //\r |
| 1144 | // Avoid forcibly reset AP caused the AP State is not updated.\r | |
| 1145 | //\r | |
| 1146 | GetMpSpinLock (CpuData);\r | |
| 1147 | CpuData->State = CpuStateIdle;\r | |
| 1148 | CpuData->Procedure = NULL;\r | |
| 1149 | ReleaseMpSpinLock (CpuData);\r | |
| 1150 | \r | |
| 9908a829 | 1151 | while (TRUE) {\r |
| d16cf36d | 1152 | GetMpSpinLock (CpuData);\r |
| 9908a829 CF |
1153 | ProcedureArgument = CpuData->Parameter;\r |
| 1154 | Procedure = CpuData->Procedure;\r | |
| d16cf36d | 1155 | ReleaseMpSpinLock (CpuData);\r |
| 9908a829 CF |
1156 | \r |
| 1157 | if (Procedure != NULL) {\r | |
| 1158 | Procedure (ProcedureArgument);\r | |
| 1159 | \r | |
| d16cf36d | 1160 | GetMpSpinLock (CpuData);\r |
| 9908a829 | 1161 | CpuData->Procedure = NULL;\r |
| d16cf36d CF |
1162 | CpuData->State = CpuStateFinished;\r |
| 1163 | ReleaseMpSpinLock (CpuData);\r | |
| 9908a829 CF |
1164 | }\r |
| 1165 | \r | |
| 1166 | CpuPause ();\r | |
| 1167 | }\r | |
| 1168 | \r | |
| e343f8f7 CF |
1169 | CpuSleep ();\r |
| 1170 | CpuDeadLoop ();\r | |
| 1171 | }\r | |
| 1172 | \r | |
| 3f4f0af8 CF |
1173 | /**\r |
| 1174 | Checks AP' status periodically.\r | |
| 1175 | \r | |
| 1176 | This function is triggerred by timer perodically to check the\r | |
| 1177 | state of AP forStartupThisAP() executed in non-blocking mode.\r | |
| 1178 | \r | |
| 1179 | @param Event Event triggered.\r | |
| 1180 | @param Context Parameter passed with the event.\r | |
| 1181 | \r | |
| 1182 | **/\r | |
| 1183 | VOID\r | |
| 1184 | EFIAPI\r | |
| 1185 | CheckThisAPStatus (\r | |
| 1186 | IN EFI_EVENT Event,\r | |
| 1187 | IN VOID *Context\r | |
| 1188 | )\r | |
| 1189 | {\r | |
| 1190 | CPU_DATA_BLOCK *CpuData;\r | |
| 1191 | CPU_STATE CpuState;\r | |
| 1192 | \r | |
| 1193 | CpuData = (CPU_DATA_BLOCK *) Context;\r | |
| 1194 | if (CpuData->TimeoutActive) {\r | |
| 1195 | CpuData->Timeout -= gPollInterval;\r | |
| 1196 | }\r | |
| 1197 | \r | |
| 1198 | CpuState = GetApState (CpuData);\r | |
| 1199 | \r | |
| 1200 | if (CpuState == CpuStateFinished) {\r | |
| 1201 | if (CpuData->Finished) {\r | |
| 1202 | *CpuData->Finished = TRUE;\r | |
| 1203 | }\r | |
| 1204 | SetApState (CpuData, CpuStateIdle);\r | |
| 1205 | goto out;\r | |
| 1206 | }\r | |
| 1207 | \r | |
| 1208 | if (CpuData->TimeoutActive && CpuData->Timeout < 0) {\r | |
| 1209 | if (CpuState != CpuStateIdle &&\r | |
| 1210 | CpuData->Finished) {\r | |
| 1211 | *CpuData->Finished = FALSE;\r | |
| 1212 | }\r | |
| 1213 | ResetProcessorToIdleState (CpuData);\r | |
| 1214 | goto out;\r | |
| 1215 | }\r | |
| 1216 | \r | |
| 1217 | return;\r | |
| 1218 | \r | |
| 1219 | out:\r | |
| acb2172d CF |
1220 | CpuData->TimeoutActive = FALSE;\r |
| 1221 | gBS->SignalEvent (CpuData->WaitEvent);\r | |
| 1222 | CpuData->WaitEvent = NULL;\r | |
| 3f4f0af8 CF |
1223 | }\r |
| 1224 | \r | |
| 5fee172f CF |
1225 | /**\r |
| 1226 | Checks APs' status periodically.\r | |
| 1227 | \r | |
| 1228 | This function is triggerred by timer perodically to check the\r | |
| 1229 | state of APs for StartupAllAPs() executed in non-blocking mode.\r | |
| 1230 | \r | |
| 1231 | @param Event Event triggered.\r | |
| 1232 | @param Context Parameter passed with the event.\r | |
| 1233 | \r | |
| 1234 | **/\r | |
| 1235 | VOID\r | |
| 1236 | EFIAPI\r | |
| 1237 | CheckAllAPsStatus (\r | |
| 1238 | IN EFI_EVENT Event,\r | |
| 1239 | IN VOID *Context\r | |
| 1240 | )\r | |
| 1241 | {\r | |
| acb2172d CF |
1242 | CPU_DATA_BLOCK *CpuData;\r |
| 1243 | UINTN Number;\r | |
| e4aaf764 | 1244 | EFI_STATUS Status;\r |
| acb2172d | 1245 | \r |
| 5fee172f CF |
1246 | if (mMpSystemData.TimeoutActive) {\r |
| 1247 | mMpSystemData.Timeout -= gPollInterval;\r | |
| 1248 | }\r | |
| 1249 | \r | |
| acb2172d CF |
1250 | if (mStopCheckAllAPsStatus) {\r |
| 1251 | return;\r | |
| 1252 | }\r | |
| 5fee172f | 1253 | \r |
| e4aaf764 CF |
1254 | //\r |
| 1255 | // avoid next timer enter.\r | |
| 1256 | //\r | |
| 1257 | Status = gBS->SetTimer (\r | |
| 1258 | mMpSystemData.CheckAllAPsEvent,\r | |
| 1259 | TimerCancel,\r | |
| 1260 | 0\r | |
| 1261 | );\r | |
| 1262 | ASSERT_EFI_ERROR (Status);\r | |
| 1263 | \r | |
| acb2172d CF |
1264 | if (mMpSystemData.WaitEvent != NULL) {\r |
| 1265 | CheckAndUpdateAllAPsToIdleState ();\r | |
| 5fee172f | 1266 | //\r |
| acb2172d | 1267 | // task timeout\r |
| 5fee172f | 1268 | //\r |
| acb2172d CF |
1269 | if (mMpSystemData.TimeoutActive && mMpSystemData.Timeout < 0) {\r |
| 1270 | ResetAllFailedAPs();\r | |
| 1271 | //\r | |
| 1272 | // force exit\r | |
| 1273 | //\r | |
| 1274 | mMpSystemData.FinishCount = mMpSystemData.StartCount;\r | |
| 1275 | }\r | |
| 5fee172f | 1276 | \r |
| acb2172d | 1277 | if (mMpSystemData.FinishCount != mMpSystemData.StartCount) {\r |
| e4aaf764 | 1278 | goto EXIT;\r |
| acb2172d | 1279 | }\r |
| 5fee172f | 1280 | \r |
| acb2172d | 1281 | mMpSystemData.TimeoutActive = FALSE;\r |
| 5fee172f CF |
1282 | gBS->SignalEvent (mMpSystemData.WaitEvent);\r |
| 1283 | mMpSystemData.WaitEvent = NULL;\r | |
| acb2172d | 1284 | mStopCheckAllAPsStatus = TRUE;\r |
| e4aaf764 CF |
1285 | \r |
| 1286 | goto EXIT;\r | |
| acb2172d CF |
1287 | }\r |
| 1288 | \r | |
| 1289 | //\r | |
| 1290 | // check each AP status for StartupThisAP\r | |
| 1291 | //\r | |
| 1292 | for (Number = 0; Number < mMpSystemData.NumberOfProcessors; Number++) {\r | |
| 1293 | CpuData = &mMpSystemData.CpuDatas[Number];\r | |
| 1294 | if (TestCpuStatusFlag (CpuData, PROCESSOR_AS_BSP_BIT)) {\r | |
| 1295 | //\r | |
| 1296 | // Skip BSP\r | |
| 1297 | //\r | |
| 1298 | continue;\r | |
| 1299 | }\r | |
| 1300 | \r | |
| 1301 | if (!TestCpuStatusFlag (CpuData, PROCESSOR_ENABLED_BIT)) {\r | |
| 1302 | //\r | |
| 1303 | // Skip Disabled processors\r | |
| 1304 | //\r | |
| 1305 | continue;\r | |
| 1306 | }\r | |
| 1307 | \r | |
| 1308 | if (CpuData->WaitEvent) {\r | |
| 1309 | CheckThisAPStatus (NULL, (VOID *)CpuData);\r | |
| 1310 | }\r | |
| 5fee172f | 1311 | }\r |
| e4aaf764 CF |
1312 | \r |
| 1313 | EXIT:\r | |
| 1314 | Status = gBS->SetTimer (\r | |
| 1315 | mMpSystemData.CheckAllAPsEvent,\r | |
| 1316 | TimerPeriodic,\r | |
| 1317 | EFI_TIMER_PERIOD_MICROSECONDS (100)\r | |
| 1318 | );\r | |
| 1319 | ASSERT_EFI_ERROR (Status);\r | |
| 5fee172f CF |
1320 | }\r |
| 1321 | \r | |
| 1535c888 JJ |
1322 | /**\r |
| 1323 | Application Processor C code entry point.\r | |
| 1324 | \r | |
| 1325 | **/\r | |
| 1326 | VOID\r | |
| 1327 | EFIAPI\r | |
| 1328 | ApEntryPointInC (\r | |
| 1329 | VOID\r | |
| 1330 | )\r | |
| 1331 | {\r | |
| ac9dbb3b CF |
1332 | VOID* TopOfApStack;\r |
| 1333 | UINTN ProcessorNumber;\r | |
| 03673ae1 | 1334 | \r |
| ac9dbb3b CF |
1335 | if (!mAPsAlreadyInitFinished) {\r |
| 1336 | FillInProcessorInformation (FALSE, mMpSystemData.NumberOfProcessors);\r | |
| 1337 | TopOfApStack = (UINT8*)mApStackStart + gApStackSize;\r | |
| 1338 | mApStackStart = TopOfApStack;\r | |
| 03673ae1 | 1339 | \r |
| ac9dbb3b CF |
1340 | //\r |
| 1341 | // Store the Stack address, when reset the AP, We can found the original address.\r | |
| 1342 | //\r | |
| 1343 | mMpSystemData.CpuDatas[mMpSystemData.NumberOfProcessors].TopOfStack = TopOfApStack;\r | |
| 1344 | mMpSystemData.NumberOfProcessors++;\r | |
| 1345 | mMpSystemData.NumberOfEnabledProcessors++;\r | |
| 1346 | } else {\r | |
| 1347 | WhoAmI (&mMpServicesTemplate, &ProcessorNumber);\r | |
| 1348 | //\r | |
| 1349 | // Get the original stack address.\r | |
| 1350 | //\r | |
| 1351 | TopOfApStack = mMpSystemData.CpuDatas[ProcessorNumber].TopOfStack;\r | |
| 1352 | }\r | |
| e343f8f7 CF |
1353 | \r |
| 1354 | SwitchStack (\r | |
| 1355 | (SWITCH_STACK_ENTRY_POINT)(UINTN)ProcessorToIdleState,\r | |
| 1356 | NULL,\r | |
| 1357 | NULL,\r | |
| 03673ae1 CF |
1358 | TopOfApStack);\r |
| 1359 | }\r | |
| 1360 | \r | |
| 1361 | /**\r | |
| 1362 | This function is called by all processors (both BSP and AP) once and collects MP related data.\r | |
| 1363 | \r | |
| 1364 | @param Bsp TRUE if the CPU is BSP\r | |
| 1365 | @param ProcessorNumber The specific processor number\r | |
| 1366 | \r | |
| 1367 | @retval EFI_SUCCESS Data for the processor collected and filled in\r | |
| 1368 | \r | |
| 1369 | **/\r | |
| 1370 | EFI_STATUS\r | |
| 1371 | FillInProcessorInformation (\r | |
| 1372 | IN BOOLEAN Bsp,\r | |
| 1373 | IN UINTN ProcessorNumber\r | |
| 1374 | )\r | |
| 1375 | {\r | |
| 1376 | CPU_DATA_BLOCK *CpuData;\r | |
| 1377 | UINT32 ProcessorId;\r | |
| 1378 | \r | |
| 1379 | CpuData = &mMpSystemData.CpuDatas[ProcessorNumber];\r | |
| 1380 | ProcessorId = GetApicId ();\r | |
| 1381 | CpuData->Info.ProcessorId = ProcessorId;\r | |
| 1382 | CpuData->Info.StatusFlag = PROCESSOR_ENABLED_BIT | PROCESSOR_HEALTH_STATUS_BIT;\r | |
| 1383 | if (Bsp) {\r | |
| 1384 | CpuData->Info.StatusFlag |= PROCESSOR_AS_BSP_BIT;\r | |
| 1385 | }\r | |
| 1386 | CpuData->Info.Location.Package = ProcessorId;\r | |
| 1387 | CpuData->Info.Location.Core = 0;\r | |
| 1388 | CpuData->Info.Location.Thread = 0;\r | |
| 1389 | CpuData->State = Bsp ? CpuStateBuzy : CpuStateIdle;\r | |
| 1390 | \r | |
| 1391 | CpuData->Procedure = NULL;\r | |
| 1392 | CpuData->Parameter = NULL;\r | |
| 1393 | InitializeSpinLock (&CpuData->CpuDataLock);\r | |
| 1394 | \r | |
| 1395 | return EFI_SUCCESS;\r | |
| 1535c888 JJ |
1396 | }\r |
| 1397 | \r | |
| 03673ae1 CF |
1398 | /**\r |
| 1399 | Prepare the System Data.\r | |
| 1400 | \r | |
| 1401 | @retval EFI_SUCCESS the System Data finished initilization.\r | |
| 1402 | \r | |
| 1403 | **/\r | |
| 1404 | EFI_STATUS\r | |
| 1405 | InitMpSystemData (\r | |
| 1406 | VOID\r | |
| 1407 | )\r | |
| 1408 | {\r | |
| 3f4f0af8 CF |
1409 | EFI_STATUS Status;\r |
| 1410 | \r | |
| 03673ae1 CF |
1411 | ZeroMem (&mMpSystemData, sizeof (MP_SYSTEM_DATA));\r |
| 1412 | \r | |
| 1413 | mMpSystemData.NumberOfProcessors = 1;\r | |
| 1414 | mMpSystemData.NumberOfEnabledProcessors = 1;\r | |
| 1415 | \r | |
| 1416 | mMpSystemData.CpuDatas = AllocateZeroPool (sizeof (CPU_DATA_BLOCK) * gMaxLogicalProcessorNumber);\r | |
| 1417 | ASSERT(mMpSystemData.CpuDatas != NULL);\r | |
| 1418 | \r | |
| 5fee172f CF |
1419 | Status = gBS->CreateEvent (\r |
| 1420 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
| 1421 | TPL_CALLBACK,\r | |
| 1422 | CheckAllAPsStatus,\r | |
| 1423 | NULL,\r | |
| 1424 | &mMpSystemData.CheckAllAPsEvent\r | |
| 1425 | );\r | |
| 1426 | ASSERT_EFI_ERROR (Status);\r | |
| 1427 | \r | |
| acb2172d CF |
1428 | //\r |
| 1429 | // Set timer to check all APs status.\r | |
| 1430 | //\r | |
| 1431 | Status = gBS->SetTimer (\r | |
| 1432 | mMpSystemData.CheckAllAPsEvent,\r | |
| 1433 | TimerPeriodic,\r | |
| 1434 | EFI_TIMER_PERIOD_MICROSECONDS (100)\r | |
| 1435 | );\r | |
| 1436 | ASSERT_EFI_ERROR (Status);\r | |
| 3f4f0af8 | 1437 | \r |
| 03673ae1 CF |
1438 | //\r |
| 1439 | // BSP\r | |
| 1440 | //\r | |
| 1441 | FillInProcessorInformation (TRUE, 0);\r | |
| 1442 | \r | |
| 1443 | return EFI_SUCCESS;\r | |
| 1444 | }\r | |
| 1535c888 | 1445 | \r |
| 6022e28c JJ |
1446 | /**\r |
| 1447 | Initialize Multi-processor support.\r | |
| 1448 | \r | |
| 1449 | **/\r | |
| 1450 | VOID\r | |
| 1451 | InitializeMpSupport (\r | |
| 1452 | VOID\r | |
| 1453 | )\r | |
| 1454 | {\r | |
| 6a26a597 CF |
1455 | gMaxLogicalProcessorNumber = (UINTN) PcdGet32 (PcdCpuMaxLogicalProcessorNumber);\r |
| 1456 | if (gMaxLogicalProcessorNumber < 1) {\r | |
| 1457 | DEBUG ((DEBUG_ERROR, "Setting PcdCpuMaxLogicalProcessorNumber should be more than zero.\n"));\r | |
| 1458 | return;\r | |
| 1459 | }\r | |
| 1460 | \r | |
| 1461 | if (gMaxLogicalProcessorNumber == 1) {\r | |
| 1462 | return;\r | |
| 1463 | }\r | |
| 1464 | \r | |
| 1465 | gApStackSize = (UINTN) PcdGet32 (PcdCpuApStackSize);\r | |
| 1466 | ASSERT ((gApStackSize & (SIZE_4KB - 1)) == 0);\r | |
| 1467 | \r | |
| 1468 | mApStackStart = AllocatePages (EFI_SIZE_TO_PAGES (gMaxLogicalProcessorNumber * gApStackSize));\r | |
| 1469 | ASSERT (mApStackStart != NULL);\r | |
| 6022e28c | 1470 | \r |
| 6a26a597 CF |
1471 | //\r |
| 1472 | // the first buffer of stack size used for common stack, when the amount of AP\r | |
| 1473 | // more than 1, we should never free the common stack which maybe used for AP reset.\r | |
| 1474 | //\r | |
| 1475 | mCommonStack = mApStackStart;\r | |
| 1476 | mTopOfApCommonStack = (UINT8*) mApStackStart + gApStackSize;\r | |
| 1477 | mApStackStart = mTopOfApCommonStack;\r | |
| 1478 | \r | |
| 03673ae1 | 1479 | InitMpSystemData ();\r |
| 6a26a597 | 1480 | \r |
| fe078dd5 CF |
1481 | PrepareAPStartupCode ();\r |
| 1482 | \r | |
| 03673ae1 | 1483 | if (mMpSystemData.NumberOfProcessors == 1) {\r |
| fe078dd5 | 1484 | FreeApStartupCode ();\r |
| 6a26a597 CF |
1485 | FreePages (mCommonStack, EFI_SIZE_TO_PAGES (gMaxLogicalProcessorNumber * gApStackSize));\r |
| 1486 | return;\r | |
| 1487 | }\r | |
| 1488 | \r | |
| ac9dbb3b CF |
1489 | mAPsAlreadyInitFinished = TRUE;\r |
| 1490 | \r | |
| 03673ae1 CF |
1491 | if (mMpSystemData.NumberOfProcessors < gMaxLogicalProcessorNumber) {\r |
| 1492 | FreePages (mApStackStart, EFI_SIZE_TO_PAGES (\r | |
| 1493 | (gMaxLogicalProcessorNumber - mMpSystemData.NumberOfProcessors) *\r | |
| 1494 | gApStackSize));\r | |
| 6a26a597 CF |
1495 | }\r |
| 1496 | }\r |