projects / mirror_edk2.git / blame
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|---|---|---|
| 6022e28c JJ |
1 | /** @file\r |
| 2 | CPU DXE MP support\r | |
| 3 | \r | |
| 4 | Copyright (c) 2006 - 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 | #ifndef _CPU_MP_H_\r | |
| 16 | #define _CPU_MP_H_\r | |
| 17 | \r | |
| 003973d9 | 18 | #include <Protocol/MpService.h>\r |
| 03673ae1 | 19 | #include <Library/SynchronizationLib.h>\r |
| 003973d9 | 20 | \r |
| 6022e28c JJ |
21 | /**\r |
| 22 | Initialize Multi-processor support.\r | |
| 23 | \r | |
| 24 | **/\r | |
| 25 | VOID\r | |
| 26 | InitializeMpSupport (\r | |
| 27 | VOID\r | |
| 28 | );\r | |
| 29 | \r | |
| 533263ee JJ |
30 | typedef\r |
| 31 | VOID\r | |
| 32 | (EFIAPI *STACKLESS_AP_ENTRY_POINT)(\r | |
| 33 | VOID\r | |
| 34 | );\r | |
| 35 | \r | |
| 36 | /**\r | |
| 37 | Starts the Application Processors and directs them to jump to the\r | |
| 38 | specified routine.\r | |
| 39 | \r | |
| 40 | The processor jumps to this code in flat mode, but the processor's\r | |
| 41 | stack is not initialized.\r | |
| 42 | \r | |
| 533263ee | 43 | @retval EFI_SUCCESS The APs were started\r |
| 533263ee JJ |
44 | \r |
| 45 | **/\r | |
| 46 | EFI_STATUS\r | |
| 47 | StartApsStackless (\r | |
| fe078dd5 | 48 | VOID\r |
| 533263ee JJ |
49 | );\r |
| 50 | \r | |
| fab82c18 JJ |
51 | /**\r |
| 52 | The AP entry point that the Startup-IPI target code will jump to.\r | |
| 53 | \r | |
| 54 | The processor jumps to this code in flat mode, but the processor's\r | |
| 55 | stack is not initialized.\r | |
| 56 | \r | |
| 57 | **/\r | |
| 58 | VOID\r | |
| 59 | EFIAPI\r | |
| 60 | AsmApEntryPoint (\r | |
| 61 | VOID\r | |
| 62 | );\r | |
| 63 | \r | |
| 64 | /**\r | |
| 65 | Releases the lock preventing other APs from using the shared AP\r | |
| 66 | stack.\r | |
| 67 | \r | |
| 68 | Once the AP has transitioned to using a new stack, it can call this\r | |
| 69 | function to allow another AP to proceed with using the shared stack.\r | |
| 70 | \r | |
| 71 | **/\r | |
| 72 | VOID\r | |
| 73 | EFIAPI\r | |
| 74 | AsmApDoneWithCommonStack (\r | |
| 75 | VOID\r | |
| 76 | );\r | |
| 77 | \r | |
| 03673ae1 CF |
78 | typedef enum {\r |
| 79 | CpuStateIdle,\r | |
| 80 | CpuStateBlocked,\r | |
| 81 | CpuStateReady,\r | |
| b302a978 | 82 | CpuStateBusy,\r |
| 68f06742 CF |
83 | CpuStateFinished,\r |
| 84 | CpuStateSleeping\r | |
| 03673ae1 CF |
85 | } CPU_STATE;\r |
| 86 | \r | |
| 87 | /**\r | |
| 88 | Define Individual Processor Data block.\r | |
| 89 | \r | |
| 90 | **/\r | |
| 91 | typedef struct {\r | |
| 92 | EFI_PROCESSOR_INFORMATION Info;\r | |
| 93 | SPIN_LOCK CpuDataLock;\r | |
| 0e724fc1 | 94 | INTN LockSelf;\r |
| 03673ae1 CF |
95 | volatile CPU_STATE State;\r |
| 96 | \r | |
| 97 | EFI_AP_PROCEDURE Procedure;\r | |
| 98 | VOID *Parameter;\r | |
| 3f4f0af8 CF |
99 | BOOLEAN *Finished;\r |
| 100 | INTN Timeout;\r | |
| 101 | EFI_EVENT WaitEvent;\r | |
| 102 | BOOLEAN TimeoutActive;\r | |
| 103 | EFI_EVENT CheckThisAPEvent;\r | |
| ac9dbb3b | 104 | VOID *TopOfStack;\r |
| 03673ae1 CF |
105 | } CPU_DATA_BLOCK;\r |
| 106 | \r | |
| 107 | /**\r | |
| 108 | Define MP data block which consumes individual processor block.\r | |
| 109 | \r | |
| 110 | **/\r | |
| 111 | typedef struct {\r | |
| 112 | CPU_DATA_BLOCK *CpuDatas;\r | |
| 113 | UINTN NumberOfProcessors;\r | |
| 114 | UINTN NumberOfEnabledProcessors;\r | |
| 5fee172f CF |
115 | \r |
| 116 | EFI_AP_PROCEDURE Procedure;\r | |
| 117 | VOID *ProcedureArgument;\r | |
| 118 | UINTN StartCount;\r | |
| 119 | UINTN FinishCount;\r | |
| 120 | BOOLEAN SingleThread;\r | |
| 121 | UINTN **FailedList;\r | |
| 122 | UINTN FailedListIndex;\r | |
| 123 | INTN Timeout;\r | |
| 124 | EFI_EVENT WaitEvent;\r | |
| 125 | BOOLEAN TimeoutActive;\r | |
| 126 | EFI_EVENT CheckAllAPsEvent;\r | |
| 03673ae1 CF |
127 | } MP_SYSTEM_DATA;\r |
| 128 | \r | |
| 129 | /**\r | |
| 130 | This function is called by all processors (both BSP and AP) once and collects MP related data.\r | |
| 131 | \r | |
| 132 | @param Bsp TRUE if the CPU is BSP\r | |
| 133 | @param ProcessorNumber The specific processor number\r | |
| 134 | \r | |
| 135 | @retval EFI_SUCCESS Data for the processor collected and filled in\r | |
| 136 | \r | |
| 137 | **/\r | |
| 138 | EFI_STATUS\r | |
| 139 | FillInProcessorInformation (\r | |
| 140 | IN BOOLEAN Bsp,\r | |
| 141 | IN UINTN ProcessorNumber\r | |
| 142 | );\r | |
| 143 | \r | |
| d894d8b7 CF |
144 | /**\r |
| 145 | This service retrieves the number of logical processor in the platform\r | |
| 146 | and the number of those logical processors that are enabled on this boot.\r | |
| 147 | This service may only be called from the BSP.\r | |
| 148 | \r | |
| 149 | This function is used to retrieve the following information:\r | |
| 150 | - The number of logical processors that are present in the system.\r | |
| 151 | - The number of enabled logical processors in the system at the instant\r | |
| 152 | this call is made.\r | |
| 153 | \r | |
| 154 | Because MP Service Protocol provides services to enable and disable processors\r | |
| 155 | dynamically, the number of enabled logical processors may vary during the\r | |
| 156 | course of a boot session.\r | |
| 157 | \r | |
| 158 | If this service is called from an AP, then EFI_DEVICE_ERROR is returned.\r | |
| 159 | If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then\r | |
| 160 | EFI_INVALID_PARAMETER is returned. Otherwise, the total number of processors\r | |
| 161 | is returned in NumberOfProcessors, the number of currently enabled processor\r | |
| 162 | is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned.\r | |
| 163 | \r | |
| 164 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
| 165 | instance.\r | |
| 166 | @param[out] NumberOfProcessors Pointer to the total number of logical\r | |
| 167 | processors in the system, including the BSP\r | |
| 168 | and disabled APs.\r | |
| 169 | @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical\r | |
| 170 | processors that exist in system, including\r | |
| 171 | the BSP.\r | |
| 172 | \r | |
| 173 | @retval EFI_SUCCESS The number of logical processors and enabled\r | |
| 174 | logical processors was retrieved.\r | |
| 175 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
| 176 | @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL.\r | |
| 177 | @retval EFI_INVALID_PARAMETER NumberOfEnabledProcessors is NULL.\r | |
| 178 | \r | |
| 179 | **/\r | |
| 180 | EFI_STATUS\r | |
| 181 | EFIAPI\r | |
| 182 | GetNumberOfProcessors (\r | |
| 183 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 184 | OUT UINTN *NumberOfProcessors,\r | |
| 185 | OUT UINTN *NumberOfEnabledProcessors\r | |
| 186 | );\r | |
| 187 | \r | |
| e7938b5a CF |
188 | /**\r |
| 189 | Gets detailed MP-related information on the requested processor at the\r | |
| 190 | instant this call is made. This service may only be called from the BSP.\r | |
| 191 | \r | |
| 192 | This service retrieves detailed MP-related information about any processor\r | |
| 193 | on the platform. Note the following:\r | |
| 194 | - The processor information may change during the course of a boot session.\r | |
| 195 | - The information presented here is entirely MP related.\r | |
| 196 | \r | |
| 197 | Information regarding the number of caches and their sizes, frequency of operation,\r | |
| 198 | slot numbers is all considered platform-related information and is not provided\r | |
| 199 | by this service.\r | |
| 200 | \r | |
| 201 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
| 202 | instance.\r | |
| 203 | @param[in] ProcessorNumber The handle number of processor.\r | |
| 204 | @param[out] ProcessorInfoBuffer A pointer to the buffer where information for\r | |
| 205 | the requested processor is deposited.\r | |
| 206 | \r | |
| 207 | @retval EFI_SUCCESS Processor information was returned.\r | |
| 208 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
| 209 | @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.\r | |
| 210 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
| 211 | ProcessorNumber does not exist in the platform.\r | |
| 212 | \r | |
| 213 | **/\r | |
| 214 | EFI_STATUS\r | |
| 215 | EFIAPI\r | |
| 216 | GetProcessorInfo (\r | |
| 217 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 218 | IN UINTN ProcessorNumber,\r | |
| 219 | OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer\r | |
| 220 | );\r | |
| 221 | \r | |
| 5fee172f CF |
222 | /**\r |
| 223 | This service executes a caller provided function on all enabled APs. APs can\r | |
| 224 | run either simultaneously or one at a time in sequence. This service supports\r | |
| 225 | both blocking and non-blocking requests. The non-blocking requests use EFI\r | |
| 226 | events so the BSP can detect when the APs have finished. This service may only\r | |
| 227 | be called from the BSP.\r | |
| 228 | \r | |
| 229 | This function is used to dispatch all the enabled APs to the function specified\r | |
| 230 | by Procedure. If any enabled AP is busy, then EFI_NOT_READY is returned\r | |
| 231 | immediately and Procedure is not started on any AP.\r | |
| 232 | \r | |
| 233 | If SingleThread is TRUE, all the enabled APs execute the function specified by\r | |
| 234 | Procedure one by one, in ascending order of processor handle number. Otherwise,\r | |
| 235 | all the enabled APs execute the function specified by Procedure simultaneously.\r | |
| 236 | \r | |
| 237 | If WaitEvent is NULL, execution is in blocking mode. The BSP waits until all\r | |
| 238 | APs finish or TimeoutInMicroseconds expires. Otherwise, execution is in non-blocking\r | |
| 239 | mode, and the BSP returns from this service without waiting for APs. If a\r | |
| 240 | non-blocking mode is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r | |
| 241 | is signaled, then EFI_UNSUPPORTED must be returned.\r | |
| 242 | \r | |
| 243 | If the timeout specified by TimeoutInMicroseconds expires before all APs return\r | |
| 244 | from Procedure, then Procedure on the failed APs is terminated. All enabled APs\r | |
| 245 | are always available for further calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
| 246 | and EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). If FailedCpuList is not NULL, its\r | |
| 247 | content points to the list of processor handle numbers in which Procedure was\r | |
| 248 | terminated.\r | |
| 249 | \r | |
| 250 | Note: It is the responsibility of the consumer of the EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
| 251 | to make sure that the nature of the code that is executed on the BSP and the\r | |
| 252 | dispatched APs is well controlled. The MP Services Protocol does not guarantee\r | |
| 253 | that the Procedure function is MP-safe. Hence, the tasks that can be run in\r | |
| 254 | parallel are limited to certain independent tasks and well-controlled exclusive\r | |
| 255 | code. EFI services and protocols may not be called by APs unless otherwise\r | |
| 256 | specified.\r | |
| 257 | \r | |
| 258 | In blocking execution mode, BSP waits until all APs finish or\r | |
| 259 | TimeoutInMicroseconds expires.\r | |
| 260 | \r | |
| 261 | In non-blocking execution mode, BSP is freed to return to the caller and then\r | |
| 262 | proceed to the next task without having to wait for APs. The following\r | |
| 263 | sequence needs to occur in a non-blocking execution mode:\r | |
| 264 | \r | |
| 265 | -# The caller that intends to use this MP Services Protocol in non-blocking\r | |
| 266 | mode creates WaitEvent by calling the EFI CreateEvent() service. The caller\r | |
| 267 | invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the parameter WaitEvent\r | |
| 268 | is not NULL, then StartupAllAPs() executes in non-blocking mode. It requests\r | |
| 269 | the function specified by Procedure to be started on all the enabled APs,\r | |
| 270 | and releases the BSP to continue with other tasks.\r | |
| 271 | -# The caller can use the CheckEvent() and WaitForEvent() services to check\r | |
| 272 | the state of the WaitEvent created in step 1.\r | |
| 273 | -# When the APs complete their task or TimeoutInMicroSecondss expires, the MP\r | |
| 274 | Service signals WaitEvent by calling the EFI SignalEvent() function. If\r | |
| 275 | FailedCpuList is not NULL, its content is available when WaitEvent is\r | |
| 276 | signaled. If all APs returned from Procedure prior to the timeout, then\r | |
| 277 | FailedCpuList is set to NULL. If not all APs return from Procedure before\r | |
| 278 | the timeout, then FailedCpuList is filled in with the list of the failed\r | |
| 279 | APs. The buffer is allocated by MP Service Protocol using AllocatePool().\r | |
| 280 | It is the caller's responsibility to free the buffer with FreePool() service.\r | |
| 281 | -# This invocation of SignalEvent() function informs the caller that invoked\r | |
| 282 | EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() that either all the APs completed\r | |
| 283 | the specified task or a timeout occurred. The contents of FailedCpuList\r | |
| 284 | can be examined to determine which APs did not complete the specified task\r | |
| 285 | prior to the timeout.\r | |
| 286 | \r | |
| 287 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
| 288 | instance.\r | |
| 289 | @param[in] Procedure A pointer to the function to be run on\r | |
| 290 | enabled APs of the system. See type\r | |
| 291 | EFI_AP_PROCEDURE.\r | |
| 292 | @param[in] SingleThread If TRUE, then all the enabled APs execute\r | |
| 293 | the function specified by Procedure one by\r | |
| 294 | one, in ascending order of processor handle\r | |
| 295 | number. If FALSE, then all the enabled APs\r | |
| 296 | execute the function specified by Procedure\r | |
| 297 | simultaneously.\r | |
| 298 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
| 299 | service. If it is NULL, then execute in\r | |
| 300 | blocking mode. BSP waits until all APs finish\r | |
| 301 | or TimeoutInMicroseconds expires. If it's\r | |
| 302 | not NULL, then execute in non-blocking mode.\r | |
| 303 | BSP requests the function specified by\r | |
| 304 | Procedure to be started on all the enabled\r | |
| 305 | APs, and go on executing immediately. If\r | |
| 306 | all return from Procedure, or TimeoutInMicroseconds\r | |
| 307 | expires, this event is signaled. The BSP\r | |
| 308 | can use the CheckEvent() or WaitForEvent()\r | |
| 309 | services to check the state of event. Type\r | |
| 310 | EFI_EVENT is defined in CreateEvent() in\r | |
| 311 | the Unified Extensible Firmware Interface\r | |
| 312 | Specification.\r | |
| 313 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r | |
| 314 | APs to return from Procedure, either for\r | |
| 315 | blocking or non-blocking mode. Zero means\r | |
| 316 | infinity. If the timeout expires before\r | |
| 317 | all APs return from Procedure, then Procedure\r | |
| 318 | on the failed APs is terminated. All enabled\r | |
| 319 | APs are available for next function assigned\r | |
| 320 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
| 321 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r | |
| 322 | If the timeout expires in blocking mode,\r | |
| 323 | BSP returns EFI_TIMEOUT. If the timeout\r | |
| 324 | expires in non-blocking mode, WaitEvent\r | |
| 325 | is signaled with SignalEvent().\r | |
| 326 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
| 327 | all APs.\r | |
| 328 | @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,\r | |
| 329 | if all APs finish successfully, then its\r | |
| 330 | content is set to NULL. If not all APs\r | |
| 331 | finish before timeout expires, then its\r | |
| 332 | content is set to address of the buffer\r | |
| 333 | holding handle numbers of the failed APs.\r | |
| 334 | The buffer is allocated by MP Service Protocol,\r | |
| 335 | and it's the caller's responsibility to\r | |
| 336 | free the buffer with FreePool() service.\r | |
| 337 | In blocking mode, it is ready for consumption\r | |
| 338 | when the call returns. In non-blocking mode,\r | |
| 339 | it is ready when WaitEvent is signaled. The\r | |
| 340 | list of failed CPU is terminated by\r | |
| 341 | END_OF_CPU_LIST.\r | |
| 342 | \r | |
| 343 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r | |
| 344 | the timeout expired.\r | |
| 345 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r | |
| 346 | to all enabled APs.\r | |
| 347 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
| 348 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
| 349 | signaled.\r | |
| 350 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
| 351 | @retval EFI_NOT_STARTED No enabled APs exist in the system.\r | |
| 352 | @retval EFI_NOT_READY Any enabled APs are busy.\r | |
| 353 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
| 354 | all enabled APs have finished.\r | |
| 355 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
| 356 | \r | |
| 357 | **/\r | |
| 358 | EFI_STATUS\r | |
| 359 | EFIAPI\r | |
| 360 | StartupAllAPs (\r | |
| 361 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 362 | IN EFI_AP_PROCEDURE Procedure,\r | |
| 363 | IN BOOLEAN SingleThread,\r | |
| 364 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
| 365 | IN UINTN TimeoutInMicroseconds,\r | |
| 366 | IN VOID *ProcedureArgument OPTIONAL,\r | |
| 367 | OUT UINTN **FailedCpuList OPTIONAL\r | |
| 368 | );\r | |
| 369 | \r | |
| 3f4f0af8 CF |
370 | /**\r |
| 371 | This service lets the caller get one enabled AP to execute a caller-provided\r | |
| 372 | function. The caller can request the BSP to either wait for the completion\r | |
| 373 | of the AP or just proceed with the next task by using the EFI event mechanism.\r | |
| 374 | See EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() for more details on non-blocking\r | |
| 375 | execution support. This service may only be called from the BSP.\r | |
| 376 | \r | |
| 377 | This function is used to dispatch one enabled AP to the function specified by\r | |
| 378 | Procedure passing in the argument specified by ProcedureArgument. If WaitEvent\r | |
| 379 | is NULL, execution is in blocking mode. The BSP waits until the AP finishes or\r | |
| 380 | TimeoutInMicroSecondss expires. Otherwise, execution is in non-blocking mode.\r | |
| 381 | BSP proceeds to the next task without waiting for the AP. If a non-blocking mode\r | |
| 382 | is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled,\r | |
| 383 | then EFI_UNSUPPORTED must be returned.\r | |
| 384 | \r | |
| 385 | If the timeout specified by TimeoutInMicroseconds expires before the AP returns\r | |
| 386 | from Procedure, then execution of Procedure by the AP is terminated. The AP is\r | |
| 387 | available for subsequent calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() and\r | |
| 388 | EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r | |
| 389 | \r | |
| 390 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
| 391 | instance.\r | |
| 392 | @param[in] Procedure A pointer to the function to be run on\r | |
| 393 | enabled APs of the system. See type\r | |
| 394 | EFI_AP_PROCEDURE.\r | |
| 395 | @param[in] ProcessorNumber The handle number of the AP. The range is\r | |
| 396 | from 0 to the total number of logical\r | |
| 397 | processors minus 1. The total number of\r | |
| 398 | logical processors can be retrieved by\r | |
| 399 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
| 400 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
| 401 | service. If it is NULL, then execute in\r | |
| 402 | blocking mode. BSP waits until all APs finish\r | |
| 403 | or TimeoutInMicroseconds expires. If it's\r | |
| 404 | not NULL, then execute in non-blocking mode.\r | |
| 405 | BSP requests the function specified by\r | |
| 406 | Procedure to be started on all the enabled\r | |
| 407 | APs, and go on executing immediately. If\r | |
| 408 | all return from Procedure or TimeoutInMicroseconds\r | |
| 409 | expires, this event is signaled. The BSP\r | |
| 410 | can use the CheckEvent() or WaitForEvent()\r | |
| 411 | services to check the state of event. Type\r | |
| 412 | EFI_EVENT is defined in CreateEvent() in\r | |
| 413 | the Unified Extensible Firmware Interface\r | |
| 414 | Specification.\r | |
| 415 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r | |
| 416 | APs to return from Procedure, either for\r | |
| 417 | blocking or non-blocking mode. Zero means\r | |
| 418 | infinity. If the timeout expires before\r | |
| 419 | all APs return from Procedure, then Procedure\r | |
| 420 | on the failed APs is terminated. All enabled\r | |
| 421 | APs are available for next function assigned\r | |
| 422 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
| 423 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r | |
| 424 | If the timeout expires in blocking mode,\r | |
| 425 | BSP returns EFI_TIMEOUT. If the timeout\r | |
| 426 | expires in non-blocking mode, WaitEvent\r | |
| 427 | is signaled with SignalEvent().\r | |
| 428 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
| 429 | all APs.\r | |
| 430 | @param[out] Finished If NULL, this parameter is ignored. In\r | |
| 431 | blocking mode, this parameter is ignored.\r | |
| 432 | In non-blocking mode, if AP returns from\r | |
| 433 | Procedure before the timeout expires, its\r | |
| 434 | content is set to TRUE. Otherwise, the\r | |
| 435 | value is set to FALSE. The caller can\r | |
| 436 | determine if the AP returned from Procedure\r | |
| 437 | by evaluating this value.\r | |
| 438 | \r | |
| 439 | @retval EFI_SUCCESS In blocking mode, specified AP finished before\r | |
| 440 | the timeout expires.\r | |
| 441 | @retval EFI_SUCCESS In non-blocking mode, the function has been\r | |
| 442 | dispatched to specified AP.\r | |
| 443 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
| 444 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
| 445 | signaled.\r | |
| 446 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
| 447 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
| 448 | the specified AP has finished.\r | |
| 449 | @retval EFI_NOT_READY The specified AP is busy.\r | |
| 450 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
| 451 | ProcessorNumber does not exist.\r | |
| 452 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
| 453 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
| 454 | \r | |
| 455 | **/\r | |
| 456 | EFI_STATUS\r | |
| 457 | EFIAPI\r | |
| 458 | StartupThisAP (\r | |
| 459 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 460 | IN EFI_AP_PROCEDURE Procedure,\r | |
| 461 | IN UINTN ProcessorNumber,\r | |
| 462 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
| 463 | IN UINTN TimeoutInMicroseconds,\r | |
| 464 | IN VOID *ProcedureArgument OPTIONAL,\r | |
| 465 | OUT BOOLEAN *Finished OPTIONAL\r | |
| 466 | );\r | |
| 467 | \r | |
| b7c05ba5 CF |
468 | /**\r |
| 469 | This service switches the requested AP to be the BSP from that point onward.\r | |
| 470 | This service changes the BSP for all purposes. This call can only be performed\r | |
| 471 | by the current BSP.\r | |
| 472 | \r | |
| 473 | This service switches the requested AP to be the BSP from that point onward.\r | |
| 474 | This service changes the BSP for all purposes. The new BSP can take over the\r | |
| 475 | execution of the old BSP and continue seamlessly from where the old one left\r | |
| 476 | off. This service may not be supported after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r | |
| 477 | is signaled.\r | |
| 478 | \r | |
| 479 | If the BSP cannot be switched prior to the return from this service, then\r | |
| 480 | EFI_UNSUPPORTED must be returned.\r | |
| 481 | \r | |
| 482 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
| 483 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r | |
| 484 | BSP. The range is from 0 to the total number of\r | |
| 485 | logical processors minus 1. The total number of\r | |
| 486 | logical processors can be retrieved by\r | |
| 487 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
| 488 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r | |
| 489 | enabled AP. Otherwise, it will be disabled.\r | |
| 490 | \r | |
| 491 | @retval EFI_SUCCESS BSP successfully switched.\r | |
| 492 | @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to\r | |
| 493 | this service returning.\r | |
| 494 | @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r | |
| 495 | @retval EFI_SUCCESS The calling processor is an AP.\r | |
| 496 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
| 497 | ProcessorNumber does not exist.\r | |
| 498 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or\r | |
| 499 | a disabled AP.\r | |
| 500 | @retval EFI_NOT_READY The specified AP is busy.\r | |
| 501 | \r | |
| 502 | **/\r | |
| 503 | EFI_STATUS\r | |
| 504 | EFIAPI\r | |
| 505 | SwitchBSP (\r | |
| 506 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 507 | IN UINTN ProcessorNumber,\r | |
| 508 | IN BOOLEAN EnableOldBSP\r | |
| 509 | );\r | |
| 510 | \r | |
| fa7ce675 CF |
511 | /**\r |
| 512 | This service lets the caller enable or disable an AP from this point onward.\r | |
| 513 | This service may only be called from the BSP.\r | |
| 514 | \r | |
| 515 | This service allows the caller enable or disable an AP from this point onward.\r | |
| 516 | The caller can optionally specify the health status of the AP by Health. If\r | |
| 517 | an AP is being disabled, then the state of the disabled AP is implementation\r | |
| 518 | dependent. If an AP is enabled, then the implementation must guarantee that a\r | |
| 519 | complete initialization sequence is performed on the AP, so the AP is in a state\r | |
| 520 | that is compatible with an MP operating system. This service may not be supported\r | |
| 521 | after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled.\r | |
| 522 | \r | |
| 523 | If the enable or disable AP operation cannot be completed prior to the return\r | |
| 524 | from this service, then EFI_UNSUPPORTED must be returned.\r | |
| 525 | \r | |
| 526 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
| 527 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r | |
| 528 | BSP. The range is from 0 to the total number of\r | |
| 529 | logical processors minus 1. The total number of\r | |
| 530 | logical processors can be retrieved by\r | |
| 531 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
| 532 | @param[in] EnableAP Specifies the new state for the processor for\r | |
| 533 | enabled, FALSE for disabled.\r | |
| 534 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies\r | |
| 535 | the new health status of the AP. This flag\r | |
| 536 | corresponds to StatusFlag defined in\r | |
| 537 | EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only\r | |
| 538 | the PROCESSOR_HEALTH_STATUS_BIT is used. All other\r | |
| 539 | bits are ignored. If it is NULL, this parameter\r | |
| 540 | is ignored.\r | |
| 541 | \r | |
| 542 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
| 543 | @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed\r | |
| 544 | prior to this service returning.\r | |
| 545 | @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.\r | |
| 546 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
| 547 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber\r | |
| 548 | does not exist.\r | |
| 549 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.\r | |
| 550 | \r | |
| 551 | **/\r | |
| 552 | EFI_STATUS\r | |
| 553 | EFIAPI\r | |
| 554 | EnableDisableAP (\r | |
| 555 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 556 | IN UINTN ProcessorNumber,\r | |
| 557 | IN BOOLEAN EnableAP,\r | |
| 558 | IN UINT32 *HealthFlag OPTIONAL\r | |
| 559 | );\r | |
| 560 | \r | |
| cfa2fac1 CF |
561 | /**\r |
| 562 | This return the handle number for the calling processor. This service may be\r | |
| 563 | called from the BSP and APs.\r | |
| 564 | \r | |
| 565 | This service returns the processor handle number for the calling processor.\r | |
| 566 | The returned value is in the range from 0 to the total number of logical\r | |
| 567 | processors minus 1. The total number of logical processors can be retrieved\r | |
| 568 | with EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). This service may be\r | |
| 569 | called from the BSP and APs. If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER\r | |
| 570 | is returned. Otherwise, the current processors handle number is returned in\r | |
| 571 | ProcessorNumber, and EFI_SUCCESS is returned.\r | |
| 572 | \r | |
| 573 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
| 574 | @param[out] ProcessorNumber The handle number of AP that is to become the new\r | |
| 575 | BSP. The range is from 0 to the total number of\r | |
| 576 | logical processors minus 1. The total number of\r | |
| 577 | logical processors can be retrieved by\r | |
| 578 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
| 579 | \r | |
| 580 | @retval EFI_SUCCESS The current processor handle number was returned\r | |
| 581 | in ProcessorNumber.\r | |
| 582 | @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.\r | |
| 583 | \r | |
| 584 | **/\r | |
| 585 | EFI_STATUS\r | |
| 586 | EFIAPI\r | |
| 587 | WhoAmI (\r | |
| 588 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
| 589 | OUT UINTN *ProcessorNumber\r | |
| 590 | );\r | |
| 591 | \r | |
| 3f4f0af8 CF |
592 | /**\r |
| 593 | Terminate AP's task and set it to idle state.\r | |
| 594 | \r | |
| 595 | This function terminates AP's task due to timeout by sending INIT-SIPI,\r | |
| 596 | and sends it to idle state.\r | |
| 597 | \r | |
| 598 | @param CpuData the pointer to CPU_DATA_BLOCK of specified AP\r | |
| 599 | \r | |
| 600 | **/\r | |
| 601 | VOID\r | |
| 602 | ResetProcessorToIdleState (\r | |
| 603 | IN CPU_DATA_BLOCK *CpuData\r | |
| 604 | );\r | |
| 605 | \r | |
| fe078dd5 CF |
606 | /**\r |
| 607 | Prepares Startup Code for APs.\r | |
| 608 | This function prepares Startup Code for APs.\r | |
| 609 | \r | |
| 610 | @retval EFI_SUCCESS The APs were started\r | |
| 611 | @retval EFI_OUT_OF_RESOURCES Cannot allocate memory to start APs\r | |
| 612 | \r | |
| 613 | **/\r | |
| 614 | EFI_STATUS\r | |
| 615 | PrepareAPStartupCode (\r | |
| 616 | VOID\r | |
| 617 | );\r | |
| 618 | \r | |
| 619 | /**\r | |
| 620 | Free the code buffer of startup AP.\r | |
| 621 | \r | |
| 622 | **/\r | |
| 623 | VOID\r | |
| 624 | FreeApStartupCode (\r | |
| 625 | VOID\r | |
| 626 | );\r | |
| 627 | \r | |
| ac9dbb3b CF |
628 | /**\r |
| 629 | Resets the Application Processor and directs it to jump to the\r | |
| 630 | specified routine.\r | |
| 631 | \r | |
| 632 | The processor jumps to this code in flat mode, but the processor's\r | |
| 633 | stack is not initialized.\r | |
| 634 | \r | |
| 635 | @param ProcessorId the AP of ProcessorId was reset\r | |
| 636 | **/\r | |
| 637 | VOID\r | |
| 638 | ResetApStackless (\r | |
| 639 | IN UINT32 ProcessorId\r | |
| 640 | );\r | |
| 641 | \r | |
| 6022e28c JJ |
642 | #endif // _CPU_MP_H_\r |
| 643 | \r |