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c4671a67 | 1 | /** @file\r |
10d1be3e | 2 | Construct MP Services Protocol on top of the EMU Thread protocol.\r |
3 | This code makes APs show up in the emulator. PcdEmuApCount is the\r | |
4 | number of APs the emulator should produce.\r | |
c4671a67 | 5 | \r |
6 | The MP Services Protocol provides a generalized way of performing following tasks:\r | |
7 | - Retrieving information of multi-processor environment and MP-related status of\r | |
8 | specific processors.\r | |
9 | - Dispatching user-provided function to APs.\r | |
10 | - Maintain MP-related processor status.\r | |
11 | \r | |
12 | The MP Services Protocol must be produced on any system with more than one logical\r | |
13 | processor.\r | |
14 | \r | |
15 | The Protocol is available only during boot time.\r | |
16 | \r | |
17 | MP Services Protocol is hardware-independent. Most of the logic of this protocol\r | |
d18d8a1d | 18 | is architecturally neutral. It abstracts the multi-processor environment and\r |
19 | status of processors, and provides interfaces to retrieve information, maintain,\r | |
c4671a67 | 20 | and dispatch.\r |
21 | \r | |
d18d8a1d | 22 | MP Services Protocol may be consumed by ACPI module. The ACPI module may use this\r |
c4671a67 | 23 | protocol to retrieve data that are needed for an MP platform and report them to OS.\r |
d18d8a1d | 24 | MP Services Protocol may also be used to program and configure processors, such\r |
c4671a67 | 25 | as MTRR synchronization for memory space attributes setting in DXE Services.\r |
d18d8a1d | 26 | MP Services Protocol may be used by non-CPU DXE drivers to speed up platform boot\r |
27 | by taking advantage of the processing capabilities of the APs, for example, using\r | |
c4671a67 | 28 | APs to help test system memory in parallel with other device initialization.\r |
29 | Diagnostics applications may also use this protocol for multi-processor.\r | |
30 | \r | |
e148512e | 31 | Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r |
c4671a67 | 32 | Portitions Copyright (c) 2011, Apple Inc. All rights reserved.\r |
e3ba31da | 33 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
c4671a67 | 34 | \r |
224e1333 | 35 | \r |
c4671a67 | 36 | **/\r |
37 | \r | |
38 | #include "CpuDriver.h"\r | |
39 | \r | |
a550d468 MK |
40 | MP_SYSTEM_DATA gMPSystem;\r |
41 | EMU_THREAD_THUNK_PROTOCOL *gThread = NULL;\r | |
42 | EFI_EVENT gReadToBootEvent;\r | |
43 | BOOLEAN gReadToBoot = FALSE;\r | |
44 | UINTN gPollInterval;\r | |
c4671a67 | 45 | \r |
46 | BOOLEAN\r | |
47 | IsBSP (\r | |
48 | VOID\r | |
49 | )\r | |
50 | {\r | |
51 | EFI_STATUS Status;\r | |
52 | UINTN ProcessorNumber;\r | |
d18d8a1d | 53 | \r |
d070eef8 | 54 | Status = CpuMpServicesWhoAmI (&mMpServicesTemplate, &ProcessorNumber);\r |
c4671a67 | 55 | if (EFI_ERROR (Status)) {\r |
56 | return FALSE;\r | |
57 | }\r | |
d18d8a1d | 58 | \r |
c4671a67 | 59 | return (gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0;\r |
60 | }\r | |
61 | \r | |
c4671a67 | 62 | VOID\r |
63 | SetApProcedure (\r | |
64 | IN PROCESSOR_DATA_BLOCK *Processor,\r | |
65 | IN EFI_AP_PROCEDURE Procedure,\r | |
66 | IN VOID *ProcedureArgument\r | |
67 | )\r | |
68 | {\r | |
10d1be3e | 69 | gThread->MutexLock (Processor->ProcedureLock);\r |
a550d468 MK |
70 | Processor->Parameter = ProcedureArgument;\r |
71 | Processor->Procedure = Procedure;\r | |
10d1be3e | 72 | gThread->MutexUnlock (Processor->ProcedureLock);\r |
c4671a67 | 73 | }\r |
74 | \r | |
c4671a67 | 75 | EFI_STATUS\r |
76 | GetNextBlockedNumber (\r | |
a550d468 | 77 | OUT UINTN *NextNumber\r |
c4671a67 | 78 | )\r |
79 | {\r | |
80 | UINTN Number;\r | |
81 | PROCESSOR_STATE ProcessorState;\r | |
82 | PROCESSOR_DATA_BLOCK *Data;\r | |
83 | \r | |
84 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
85 | Data = &gMPSystem.ProcessorData[Number];\r | |
86 | if ((Data->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
87 | // Skip BSP\r | |
88 | continue;\r | |
89 | }\r | |
90 | \r | |
10d1be3e | 91 | gThread->MutexLock (Data->StateLock);\r |
c4671a67 | 92 | ProcessorState = Data->State;\r |
10d1be3e | 93 | gThread->MutexUnlock (Data->StateLock);\r |
c4671a67 | 94 | \r |
95 | if (ProcessorState == CPU_STATE_BLOCKED) {\r | |
96 | *NextNumber = Number;\r | |
97 | return EFI_SUCCESS;\r | |
98 | }\r | |
99 | }\r | |
100 | \r | |
101 | return EFI_NOT_FOUND;\r | |
102 | }\r | |
103 | \r | |
ca186b1d CF |
104 | /**\r |
105 | * Calculated and stalled the interval time by BSP to check whether\r | |
106 | * the APs have finished.\r | |
107 | *\r | |
108 | * @param[in] Timeout The time limit in microseconds for\r | |
109 | * APs to return from Procedure.\r | |
110 | *\r | |
111 | * @retval StallTime Time of execution stall.\r | |
112 | **/\r | |
113 | UINTN\r | |
114 | CalculateAndStallInterval (\r | |
a550d468 | 115 | IN UINTN Timeout\r |
ca186b1d CF |
116 | )\r |
117 | {\r | |
a550d468 | 118 | UINTN StallTime;\r |
c4671a67 | 119 | \r |
a550d468 | 120 | if ((Timeout < gPollInterval) && (Timeout != 0)) {\r |
ca186b1d CF |
121 | StallTime = Timeout;\r |
122 | } else {\r | |
123 | StallTime = gPollInterval;\r | |
124 | }\r | |
a550d468 | 125 | \r |
ca186b1d | 126 | gBS->Stall (StallTime);\r |
c4671a67 | 127 | \r |
ca186b1d CF |
128 | return StallTime;\r |
129 | }\r | |
c4671a67 | 130 | \r |
131 | /**\r | |
132 | This service retrieves the number of logical processor in the platform\r | |
133 | and the number of those logical processors that are enabled on this boot.\r | |
134 | This service may only be called from the BSP.\r | |
135 | \r | |
136 | This function is used to retrieve the following information:\r | |
137 | - The number of logical processors that are present in the system.\r | |
d18d8a1d | 138 | - The number of enabled logical processors in the system at the instant\r |
c4671a67 | 139 | this call is made.\r |
140 | \r | |
d18d8a1d | 141 | Because MP Service Protocol provides services to enable and disable processors\r |
142 | dynamically, the number of enabled logical processors may vary during the\r | |
c4671a67 | 143 | course of a boot session.\r |
d18d8a1d | 144 | \r |
145 | If this service is called from an AP, then EFI_DEVICE_ERROR is returned.\r | |
146 | If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then\r | |
147 | EFI_INVALID_PARAMETER is returned. Otherwise, the total number of processors\r | |
148 | is returned in NumberOfProcessors, the number of currently enabled processor\r | |
c4671a67 | 149 | is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned.\r |
150 | \r | |
151 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
152 | instance.\r | |
153 | @param[out] NumberOfProcessors Pointer to the total number of logical\r | |
154 | processors in the system, including the BSP\r | |
155 | and disabled APs.\r | |
156 | @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical\r | |
157 | processors that exist in system, including\r | |
158 | the BSP.\r | |
159 | \r | |
d18d8a1d | 160 | @retval EFI_SUCCESS The number of logical processors and enabled\r |
c4671a67 | 161 | logical processors was retrieved.\r |
162 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
163 | @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL.\r | |
164 | @retval EFI_INVALID_PARAMETER NumberOfEnabledProcessors is NULL.\r | |
165 | \r | |
166 | **/\r | |
167 | EFI_STATUS\r | |
168 | EFIAPI\r | |
169 | CpuMpServicesGetNumberOfProcessors (\r | |
170 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
171 | OUT UINTN *NumberOfProcessors,\r | |
172 | OUT UINTN *NumberOfEnabledProcessors\r | |
173 | )\r | |
174 | {\r | |
175 | if ((NumberOfProcessors == NULL) || (NumberOfEnabledProcessors == NULL)) {\r | |
176 | return EFI_INVALID_PARAMETER;\r | |
177 | }\r | |
d18d8a1d | 178 | \r |
c4671a67 | 179 | if (!IsBSP ()) {\r |
180 | return EFI_DEVICE_ERROR;\r | |
181 | }\r | |
d18d8a1d | 182 | \r |
c4671a67 | 183 | *NumberOfProcessors = gMPSystem.NumberOfProcessors;\r |
184 | *NumberOfEnabledProcessors = gMPSystem.NumberOfEnabledProcessors;\r | |
185 | return EFI_SUCCESS;\r | |
186 | }\r | |
187 | \r | |
c4671a67 | 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 | |
d18d8a1d | 192 | This service retrieves detailed MP-related information about any processor\r |
c4671a67 | 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 | |
d18d8a1d | 196 | \r |
c4671a67 | 197 | Information regarding the number of caches and their sizes, frequency of operation,\r |
d18d8a1d | 198 | slot numbers is all considered platform-related information and is not provided\r |
c4671a67 | 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 | CpuMpServicesGetProcessorInfo (\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 | |
222 | if (ProcessorInfoBuffer == NULL) {\r | |
223 | return EFI_INVALID_PARAMETER;\r | |
224 | }\r | |
d18d8a1d | 225 | \r |
c4671a67 | 226 | if (!IsBSP ()) {\r |
227 | return EFI_DEVICE_ERROR;\r | |
228 | }\r | |
d18d8a1d | 229 | \r |
c4671a67 | 230 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r |
231 | return EFI_NOT_FOUND;\r | |
232 | }\r | |
d18d8a1d | 233 | \r |
c4671a67 | 234 | CopyMem (ProcessorInfoBuffer, &gMPSystem.ProcessorData[ProcessorNumber], sizeof (EFI_PROCESSOR_INFORMATION));\r |
235 | return EFI_SUCCESS;\r | |
236 | }\r | |
237 | \r | |
c4671a67 | 238 | /**\r |
d18d8a1d | 239 | This service executes a caller provided function on all enabled APs. APs can\r |
240 | run either simultaneously or one at a time in sequence. This service supports\r | |
241 | both blocking and non-blocking requests. The non-blocking requests use EFI\r | |
242 | events so the BSP can detect when the APs have finished. This service may only\r | |
c4671a67 | 243 | be called from the BSP.\r |
244 | \r | |
d18d8a1d | 245 | This function is used to dispatch all the enabled APs to the function specified\r |
246 | by Procedure. If any enabled AP is busy, then EFI_NOT_READY is returned\r | |
c4671a67 | 247 | immediately and Procedure is not started on any AP.\r |
248 | \r | |
d18d8a1d | 249 | If SingleThread is TRUE, all the enabled APs execute the function specified by\r |
250 | Procedure one by one, in ascending order of processor handle number. Otherwise,\r | |
c4671a67 | 251 | all the enabled APs execute the function specified by Procedure simultaneously.\r |
252 | \r | |
d18d8a1d | 253 | If WaitEvent is NULL, execution is in blocking mode. The BSP waits until all\r |
254 | APs finish or TimeoutInMicroseconds expires. Otherwise, execution is in non-blocking\r | |
255 | mode, and the BSP returns from this service without waiting for APs. If a\r | |
256 | non-blocking mode is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r | |
c4671a67 | 257 | is signaled, then EFI_UNSUPPORTED must be returned.\r |
258 | \r | |
d18d8a1d | 259 | If the timeout specified by TimeoutInMicroseconds expires before all APs return\r |
260 | from Procedure, then Procedure on the failed APs is terminated. All enabled APs\r | |
c4671a67 | 261 | are always available for further calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r |
d18d8a1d | 262 | and EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). If FailedCpuList is not NULL, its\r |
263 | content points to the list of processor handle numbers in which Procedure was\r | |
c4671a67 | 264 | terminated.\r |
265 | \r | |
d18d8a1d | 266 | Note: It is the responsibility of the consumer of the EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r |
267 | to make sure that the nature of the code that is executed on the BSP and the\r | |
268 | dispatched APs is well controlled. The MP Services Protocol does not guarantee\r | |
269 | that the Procedure function is MP-safe. Hence, the tasks that can be run in\r | |
270 | parallel are limited to certain independent tasks and well-controlled exclusive\r | |
271 | code. EFI services and protocols may not be called by APs unless otherwise\r | |
c4671a67 | 272 | specified.\r |
273 | \r | |
d18d8a1d | 274 | In blocking execution mode, BSP waits until all APs finish or\r |
c4671a67 | 275 | TimeoutInMicroseconds expires.\r |
276 | \r | |
d18d8a1d | 277 | In non-blocking execution mode, BSP is freed to return to the caller and then\r |
278 | proceed to the next task without having to wait for APs. The following\r | |
c4671a67 | 279 | sequence needs to occur in a non-blocking execution mode:\r |
280 | \r | |
d18d8a1d | 281 | -# The caller that intends to use this MP Services Protocol in non-blocking\r |
282 | mode creates WaitEvent by calling the EFI CreateEvent() service. The caller\r | |
283 | invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the parameter WaitEvent\r | |
284 | is not NULL, then StartupAllAPs() executes in non-blocking mode. It requests\r | |
285 | the function specified by Procedure to be started on all the enabled APs,\r | |
c4671a67 | 286 | and releases the BSP to continue with other tasks.\r |
d18d8a1d | 287 | -# The caller can use the CheckEvent() and WaitForEvent() services to check\r |
c4671a67 | 288 | the state of the WaitEvent created in step 1.\r |
d18d8a1d | 289 | -# When the APs complete their task or TimeoutInMicroSecondss expires, the MP\r |
290 | Service signals WaitEvent by calling the EFI SignalEvent() function. If\r | |
291 | FailedCpuList is not NULL, its content is available when WaitEvent is\r | |
292 | signaled. If all APs returned from Procedure prior to the timeout, then\r | |
293 | FailedCpuList is set to NULL. If not all APs return from Procedure before\r | |
294 | the timeout, then FailedCpuList is filled in with the list of the failed\r | |
295 | APs. The buffer is allocated by MP Service Protocol using AllocatePool().\r | |
c4671a67 | 296 | It is the caller's responsibility to free the buffer with FreePool() service.\r |
297 | -# This invocation of SignalEvent() function informs the caller that invoked\r | |
298 | EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() that either all the APs completed\r | |
d18d8a1d | 299 | the specified task or a timeout occurred. The contents of FailedCpuList\r |
300 | can be examined to determine which APs did not complete the specified task\r | |
c4671a67 | 301 | prior to the timeout.\r |
302 | \r | |
303 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
304 | instance.\r | |
d18d8a1d | 305 | @param[in] Procedure A pointer to the function to be run on\r |
c4671a67 | 306 | enabled APs of the system. See type\r |
307 | EFI_AP_PROCEDURE.\r | |
d18d8a1d | 308 | @param[in] SingleThread If TRUE, then all the enabled APs execute\r |
309 | the function specified by Procedure one by\r | |
310 | one, in ascending order of processor handle\r | |
311 | number. If FALSE, then all the enabled APs\r | |
c4671a67 | 312 | execute the function specified by Procedure\r |
313 | simultaneously.\r | |
314 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
d18d8a1d | 315 | service. If it is NULL, then execute in\r |
316 | blocking mode. BSP waits until all APs finish\r | |
317 | or TimeoutInMicroseconds expires. If it's\r | |
318 | not NULL, then execute in non-blocking mode.\r | |
319 | BSP requests the function specified by\r | |
320 | Procedure to be started on all the enabled\r | |
321 | APs, and go on executing immediately. If\r | |
c4671a67 | 322 | all return from Procedure, or TimeoutInMicroseconds\r |
d18d8a1d | 323 | expires, this event is signaled. The BSP\r |
324 | can use the CheckEvent() or WaitForEvent()\r | |
325 | services to check the state of event. Type\r | |
326 | EFI_EVENT is defined in CreateEvent() in\r | |
327 | the Unified Extensible Firmware Interface\r | |
328 | Specification.\r | |
329 | @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for\r | |
330 | APs to return from Procedure, either for\r | |
331 | blocking or non-blocking mode. Zero means\r | |
332 | infinity. If the timeout expires before\r | |
c4671a67 | 333 | all APs return from Procedure, then Procedure\r |
d18d8a1d | 334 | on the failed APs is terminated. All enabled\r |
335 | APs are available for next function assigned\r | |
336 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
c4671a67 | 337 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r |
d18d8a1d | 338 | If the timeout expires in blocking mode,\r |
339 | BSP returns EFI_TIMEOUT. If the timeout\r | |
340 | expires in non-blocking mode, WaitEvent\r | |
c4671a67 | 341 | is signaled with SignalEvent().\r |
d18d8a1d | 342 | @param[in] ProcedureArgument The parameter passed into Procedure for\r |
c4671a67 | 343 | all APs.\r |
d18d8a1d | 344 | @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,\r |
345 | if all APs finish successfully, then its\r | |
346 | content is set to NULL. If not all APs\r | |
347 | finish before timeout expires, then its\r | |
348 | content is set to address of the buffer\r | |
349 | holding handle numbers of the failed APs.\r | |
350 | The buffer is allocated by MP Service Protocol,\r | |
351 | and it's the caller's responsibility to\r | |
c4671a67 | 352 | free the buffer with FreePool() service.\r |
d18d8a1d | 353 | In blocking mode, it is ready for consumption\r |
354 | when the call returns. In non-blocking mode,\r | |
355 | it is ready when WaitEvent is signaled. The\r | |
356 | list of failed CPU is terminated by\r | |
c4671a67 | 357 | END_OF_CPU_LIST.\r |
358 | \r | |
d18d8a1d | 359 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r |
c4671a67 | 360 | the timeout expired.\r |
d18d8a1d | 361 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r |
c4671a67 | 362 | to all enabled APs.\r |
d18d8a1d | 363 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r |
364 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
c4671a67 | 365 | signaled.\r |
366 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
367 | @retval EFI_NOT_STARTED No enabled APs exist in the system.\r | |
368 | @retval EFI_NOT_READY Any enabled APs are busy.\r | |
d18d8a1d | 369 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r |
c4671a67 | 370 | all enabled APs have finished.\r |
371 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
372 | \r | |
373 | **/\r | |
374 | EFI_STATUS\r | |
375 | EFIAPI\r | |
376 | CpuMpServicesStartupAllAps (\r | |
377 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
378 | IN EFI_AP_PROCEDURE Procedure,\r | |
379 | IN BOOLEAN SingleThread,\r | |
380 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
381 | IN UINTN TimeoutInMicroseconds,\r | |
382 | IN VOID *ProcedureArgument OPTIONAL,\r | |
383 | OUT UINTN **FailedCpuList OPTIONAL\r | |
384 | )\r | |
385 | {\r | |
386 | EFI_STATUS Status;\r | |
387 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
c4671a67 | 388 | UINTN Number;\r |
389 | UINTN NextNumber;\r | |
390 | PROCESSOR_STATE APInitialState;\r | |
391 | PROCESSOR_STATE ProcessorState;\r | |
ca186b1d | 392 | UINTN Timeout;\r |
c4671a67 | 393 | \r |
c4671a67 | 394 | if (!IsBSP ()) {\r |
395 | return EFI_DEVICE_ERROR;\r | |
396 | }\r | |
d18d8a1d | 397 | \r |
c4671a67 | 398 | if (gMPSystem.NumberOfProcessors == 1) {\r |
399 | return EFI_NOT_STARTED;\r | |
400 | }\r | |
401 | \r | |
402 | if (Procedure == NULL) {\r | |
403 | return EFI_INVALID_PARAMETER;\r | |
404 | }\r | |
d18d8a1d | 405 | \r |
c4671a67 | 406 | if ((WaitEvent != NULL) && gReadToBoot) {\r |
407 | return EFI_UNSUPPORTED;\r | |
408 | }\r | |
d18d8a1d | 409 | \r |
c156d27b CF |
410 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r |
411 | ProcessorData = &gMPSystem.ProcessorData[Number];\r | |
412 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
413 | // Skip BSP\r | |
414 | continue;\r | |
415 | }\r | |
416 | \r | |
417 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r | |
418 | // Skip Disabled processors\r | |
419 | continue;\r | |
420 | }\r | |
a550d468 MK |
421 | \r |
422 | gThread->MutexLock (ProcessorData->StateLock);\r | |
c156d27b CF |
423 | if (ProcessorData->State != CPU_STATE_IDLE) {\r |
424 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
425 | return EFI_NOT_READY;\r | |
426 | }\r | |
a550d468 MK |
427 | \r |
428 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
c156d27b | 429 | }\r |
d18d8a1d | 430 | \r |
c4671a67 | 431 | if (FailedCpuList != NULL) {\r |
8b6d0c05 | 432 | gMPSystem.FailedList = AllocatePool ((gMPSystem.NumberOfProcessors + 1) * sizeof (UINTN));\r |
433 | if (gMPSystem.FailedList == NULL) {\r | |
434 | return EFI_OUT_OF_RESOURCES;\r | |
435 | }\r | |
a550d468 | 436 | \r |
8b6d0c05 | 437 | SetMemN (gMPSystem.FailedList, (gMPSystem.NumberOfProcessors + 1) * sizeof (UINTN), END_OF_CPU_LIST);\r |
438 | gMPSystem.FailedListIndex = 0;\r | |
a550d468 | 439 | *FailedCpuList = gMPSystem.FailedList;\r |
c4671a67 | 440 | }\r |
441 | \r | |
442 | Timeout = TimeoutInMicroseconds;\r | |
443 | \r | |
a550d468 | 444 | ProcessorData = NULL;\r |
c4671a67 | 445 | \r |
a550d468 MK |
446 | gMPSystem.FinishCount = 0;\r |
447 | gMPSystem.StartCount = 0;\r | |
448 | gMPSystem.SingleThread = SingleThread;\r | |
449 | APInitialState = CPU_STATE_READY;\r | |
c4671a67 | 450 | \r |
451 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
452 | ProcessorData = &gMPSystem.ProcessorData[Number];\r | |
453 | \r | |
454 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
455 | // Skip BSP\r | |
456 | continue;\r | |
457 | }\r | |
458 | \r | |
8b6d0c05 | 459 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
460 | // Skip Disabled processors\r | |
461 | gMPSystem.FailedList[gMPSystem.FailedListIndex++] = Number;\r | |
462 | continue;\r | |
463 | }\r | |
464 | \r | |
c4671a67 | 465 | //\r |
466 | // Get APs prepared, and put failing APs into FailedCpuList\r | |
467 | // if "SingleThread", only 1 AP will put to ready state, other AP will be put to ready\r | |
468 | // state 1 by 1, until the previous 1 finished its task\r | |
469 | // if not "SingleThread", all APs are put to ready state from the beginning\r | |
470 | //\r | |
a550d468 | 471 | gThread->MutexLock (ProcessorData->StateLock);\r |
c156d27b CF |
472 | ASSERT (ProcessorData->State == CPU_STATE_IDLE);\r |
473 | ProcessorData->State = APInitialState;\r | |
474 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
c4671a67 | 475 | \r |
c156d27b CF |
476 | gMPSystem.StartCount++;\r |
477 | if (SingleThread) {\r | |
478 | APInitialState = CPU_STATE_BLOCKED;\r | |
c4671a67 | 479 | }\r |
480 | }\r | |
d18d8a1d | 481 | \r |
8b6d0c05 | 482 | if (WaitEvent != NULL) {\r |
483 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
d18d8a1d | 484 | ProcessorData = &gMPSystem.ProcessorData[Number];\r |
8b6d0c05 | 485 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r |
a550d468 | 486 | // Skip BSP\r |
8b6d0c05 | 487 | continue;\r |
488 | }\r | |
489 | \r | |
490 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r | |
491 | // Skip Disabled processors\r | |
492 | continue;\r | |
493 | }\r | |
d18d8a1d | 494 | \r |
5152f642 CF |
495 | gThread->MutexLock (ProcessorData->StateLock);\r |
496 | ProcessorState = ProcessorData->State;\r | |
497 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
498 | \r | |
499 | if (ProcessorState == CPU_STATE_READY) {\r | |
500 | SetApProcedure (ProcessorData, Procedure, ProcedureArgument);\r | |
501 | }\r | |
c4671a67 | 502 | }\r |
8b6d0c05 | 503 | \r |
504 | //\r | |
505 | // Save data into private data structure, and create timer to poll AP state before exiting\r | |
506 | //\r | |
507 | gMPSystem.Procedure = Procedure;\r | |
508 | gMPSystem.ProcedureArgument = ProcedureArgument;\r | |
509 | gMPSystem.WaitEvent = WaitEvent;\r | |
510 | gMPSystem.Timeout = TimeoutInMicroseconds;\r | |
511 | gMPSystem.TimeoutActive = (BOOLEAN)(TimeoutInMicroseconds != 0);\r | |
a550d468 MK |
512 | Status = gBS->SetTimer (\r |
513 | gMPSystem.CheckAllAPsEvent,\r | |
514 | TimerPeriodic,\r | |
515 | gPollInterval\r | |
516 | );\r | |
8b6d0c05 | 517 | return Status;\r |
c4671a67 | 518 | }\r |
519 | \r | |
520 | while (TRUE) {\r | |
521 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
d18d8a1d | 522 | ProcessorData = &gMPSystem.ProcessorData[Number];\r |
c4671a67 | 523 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r |
a550d468 | 524 | // Skip BSP\r |
c4671a67 | 525 | continue;\r |
526 | }\r | |
527 | \r | |
8b6d0c05 | 528 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
529 | // Skip Disabled processors\r | |
530 | continue;\r | |
531 | }\r | |
532 | \r | |
10d1be3e | 533 | gThread->MutexLock (ProcessorData->StateLock);\r |
c4671a67 | 534 | ProcessorState = ProcessorData->State;\r |
10d1be3e | 535 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
c4671a67 | 536 | \r |
537 | switch (ProcessorState) {\r | |
a550d468 MK |
538 | case CPU_STATE_READY:\r |
539 | SetApProcedure (ProcessorData, Procedure, ProcedureArgument);\r | |
540 | break;\r | |
541 | \r | |
542 | case CPU_STATE_FINISHED:\r | |
543 | gMPSystem.FinishCount++;\r | |
544 | if (SingleThread) {\r | |
545 | Status = GetNextBlockedNumber (&NextNumber);\r | |
546 | if (!EFI_ERROR (Status)) {\r | |
547 | gThread->MutexLock (gMPSystem.ProcessorData[NextNumber].StateLock);\r | |
548 | gMPSystem.ProcessorData[NextNumber].State = CPU_STATE_READY;\r | |
549 | gThread->MutexUnlock (gMPSystem.ProcessorData[NextNumber].StateLock);\r | |
550 | }\r | |
c4671a67 | 551 | }\r |
c4671a67 | 552 | \r |
a550d468 MK |
553 | gThread->MutexLock (ProcessorData->StateLock);\r |
554 | ProcessorData->State = CPU_STATE_IDLE;\r | |
555 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
70a2c7b1 | 556 | \r |
a550d468 | 557 | break;\r |
c4671a67 | 558 | \r |
a550d468 MK |
559 | default:\r |
560 | break;\r | |
c4671a67 | 561 | }\r |
562 | }\r | |
563 | \r | |
564 | if (gMPSystem.FinishCount == gMPSystem.StartCount) {\r | |
8b6d0c05 | 565 | Status = EFI_SUCCESS;\r |
566 | goto Done;\r | |
c4671a67 | 567 | }\r |
568 | \r | |
ca186b1d | 569 | if ((TimeoutInMicroseconds != 0) && (Timeout == 0)) {\r |
8b6d0c05 | 570 | Status = EFI_TIMEOUT;\r |
571 | goto Done;\r | |
c4671a67 | 572 | }\r |
573 | \r | |
ca186b1d | 574 | Timeout -= CalculateAndStallInterval (Timeout);\r |
c4671a67 | 575 | }\r |
576 | \r | |
8b6d0c05 | 577 | Done:\r |
578 | if (FailedCpuList != NULL) {\r | |
579 | if (gMPSystem.FailedListIndex == 0) {\r | |
580 | FreePool (*FailedCpuList);\r | |
581 | *FailedCpuList = NULL;\r | |
582 | }\r | |
583 | }\r | |
584 | \r | |
c4671a67 | 585 | return EFI_SUCCESS;\r |
586 | }\r | |
587 | \r | |
c4671a67 | 588 | /**\r |
d18d8a1d | 589 | This service lets the caller get one enabled AP to execute a caller-provided\r |
590 | function. The caller can request the BSP to either wait for the completion\r | |
591 | of the AP or just proceed with the next task by using the EFI event mechanism.\r | |
592 | See EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() for more details on non-blocking\r | |
c4671a67 | 593 | execution support. This service may only be called from the BSP.\r |
594 | \r | |
d18d8a1d | 595 | This function is used to dispatch one enabled AP to the function specified by\r |
596 | Procedure passing in the argument specified by ProcedureArgument. If WaitEvent\r | |
597 | is NULL, execution is in blocking mode. The BSP waits until the AP finishes or\r | |
598 | TimeoutInMicroSecondss expires. Otherwise, execution is in non-blocking mode.\r | |
599 | BSP proceeds to the next task without waiting for the AP. If a non-blocking mode\r | |
600 | is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled,\r | |
c4671a67 | 601 | then EFI_UNSUPPORTED must be returned.\r |
d18d8a1d | 602 | \r |
603 | If the timeout specified by TimeoutInMicroseconds expires before the AP returns\r | |
604 | from Procedure, then execution of Procedure by the AP is terminated. The AP is\r | |
605 | available for subsequent calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() and\r | |
c4671a67 | 606 | EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r |
607 | \r | |
608 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
609 | instance.\r | |
d18d8a1d | 610 | @param[in] Procedure A pointer to the function to be run on\r |
c4671a67 | 611 | enabled APs of the system. See type\r |
612 | EFI_AP_PROCEDURE.\r | |
d18d8a1d | 613 | @param[in] ProcessorNumber The handle number of the AP. The range is\r |
c4671a67 | 614 | from 0 to the total number of logical\r |
d18d8a1d | 615 | processors minus 1. The total number of\r |
c4671a67 | 616 | logical processors can be retrieved by\r |
617 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
618 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
d18d8a1d | 619 | service. If it is NULL, then execute in\r |
620 | blocking mode. BSP waits until all APs finish\r | |
621 | or TimeoutInMicroseconds expires. If it's\r | |
622 | not NULL, then execute in non-blocking mode.\r | |
623 | BSP requests the function specified by\r | |
624 | Procedure to be started on all the enabled\r | |
625 | APs, and go on executing immediately. If\r | |
c4671a67 | 626 | all return from Procedure or TimeoutInMicroseconds\r |
d18d8a1d | 627 | expires, this event is signaled. The BSP\r |
628 | can use the CheckEvent() or WaitForEvent()\r | |
629 | services to check the state of event. Type\r | |
630 | EFI_EVENT is defined in CreateEvent() in\r | |
631 | the Unified Extensible Firmware Interface\r | |
632 | Specification.\r | |
633 | @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for\r | |
634 | APs to return from Procedure, either for\r | |
635 | blocking or non-blocking mode. Zero means\r | |
636 | infinity. If the timeout expires before\r | |
c4671a67 | 637 | all APs return from Procedure, then Procedure\r |
d18d8a1d | 638 | on the failed APs is terminated. All enabled\r |
639 | APs are available for next function assigned\r | |
640 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
c4671a67 | 641 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r |
d18d8a1d | 642 | If the timeout expires in blocking mode,\r |
643 | BSP returns EFI_TIMEOUT. If the timeout\r | |
644 | expires in non-blocking mode, WaitEvent\r | |
c4671a67 | 645 | is signaled with SignalEvent().\r |
d18d8a1d | 646 | @param[in] ProcedureArgument The parameter passed into Procedure for\r |
c4671a67 | 647 | all APs.\r |
d18d8a1d | 648 | @param[out] Finished If NULL, this parameter is ignored. In\r |
c4671a67 | 649 | blocking mode, this parameter is ignored.\r |
d18d8a1d | 650 | In non-blocking mode, if AP returns from\r |
c4671a67 | 651 | Procedure before the timeout expires, its\r |
d18d8a1d | 652 | content is set to TRUE. Otherwise, the\r |
c4671a67 | 653 | value is set to FALSE. The caller can\r |
d18d8a1d | 654 | determine if the AP returned from Procedure\r |
c4671a67 | 655 | by evaluating this value.\r |
656 | \r | |
d18d8a1d | 657 | @retval EFI_SUCCESS In blocking mode, specified AP finished before\r |
c4671a67 | 658 | the timeout expires.\r |
d18d8a1d | 659 | @retval EFI_SUCCESS In non-blocking mode, the function has been\r |
c4671a67 | 660 | dispatched to specified AP.\r |
d18d8a1d | 661 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r |
662 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
c4671a67 | 663 | signaled.\r |
664 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
d18d8a1d | 665 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r |
c4671a67 | 666 | the specified AP has finished.\r |
667 | @retval EFI_NOT_READY The specified AP is busy.\r | |
d18d8a1d | 668 | @retval EFI_NOT_FOUND The processor with the handle specified by\r |
c4671a67 | 669 | ProcessorNumber does not exist.\r |
670 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
671 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
672 | \r | |
673 | **/\r | |
674 | EFI_STATUS\r | |
675 | EFIAPI\r | |
676 | CpuMpServicesStartupThisAP (\r | |
677 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
678 | IN EFI_AP_PROCEDURE Procedure,\r | |
679 | IN UINTN ProcessorNumber,\r | |
680 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
681 | IN UINTN TimeoutInMicroseconds,\r | |
682 | IN VOID *ProcedureArgument OPTIONAL,\r | |
683 | OUT BOOLEAN *Finished OPTIONAL\r | |
684 | )\r | |
685 | {\r | |
a550d468 | 686 | UINTN Timeout;\r |
d18d8a1d | 687 | \r |
c4671a67 | 688 | if (!IsBSP ()) {\r |
689 | return EFI_DEVICE_ERROR;\r | |
690 | }\r | |
d18d8a1d | 691 | \r |
c4671a67 | 692 | if (Procedure == NULL) {\r |
693 | return EFI_INVALID_PARAMETER;\r | |
694 | }\r | |
d18d8a1d | 695 | \r |
c4671a67 | 696 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r |
697 | return EFI_NOT_FOUND;\r | |
698 | }\r | |
d18d8a1d | 699 | \r |
c4671a67 | 700 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r |
701 | return EFI_INVALID_PARAMETER;\r | |
702 | }\r | |
703 | \r | |
8864869a CF |
704 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
705 | return EFI_INVALID_PARAMETER;\r | |
706 | }\r | |
707 | \r | |
a550d468 | 708 | gThread->MutexLock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 709 | if (gMPSystem.ProcessorData[ProcessorNumber].State != CPU_STATE_IDLE) {\r |
a550d468 | 710 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 711 | return EFI_NOT_READY;\r |
712 | }\r | |
a550d468 MK |
713 | \r |
714 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r | |
c4671a67 | 715 | \r |
716 | if ((WaitEvent != NULL) && gReadToBoot) {\r | |
717 | return EFI_UNSUPPORTED;\r | |
718 | }\r | |
719 | \r | |
720 | Timeout = TimeoutInMicroseconds;\r | |
721 | \r | |
a550d468 MK |
722 | gMPSystem.StartCount = 1;\r |
723 | gMPSystem.FinishCount = 0;\r | |
c4671a67 | 724 | \r |
725 | SetApProcedure (&gMPSystem.ProcessorData[ProcessorNumber], Procedure, ProcedureArgument);\r | |
726 | \r | |
8b6d0c05 | 727 | if (WaitEvent != NULL) {\r |
d75d0409 | 728 | // Non Blocking\r |
729 | gMPSystem.WaitEvent = WaitEvent;\r | |
730 | gBS->SetTimer (\r | |
731 | gMPSystem.ProcessorData[ProcessorNumber].CheckThisAPEvent,\r | |
732 | TimerPeriodic,\r | |
733 | gPollInterval\r | |
734 | );\r | |
8b6d0c05 | 735 | return EFI_SUCCESS;\r |
736 | }\r | |
737 | \r | |
738 | // Blocking\r | |
c4671a67 | 739 | while (TRUE) {\r |
f9032449 | 740 | gThread->MutexLock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 741 | if (gMPSystem.ProcessorData[ProcessorNumber].State == CPU_STATE_FINISHED) {\r |
742 | gMPSystem.ProcessorData[ProcessorNumber].State = CPU_STATE_IDLE;\r | |
f9032449 | 743 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 744 | break;\r |
745 | }\r | |
746 | \r | |
f9032449 | 747 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 748 | \r |
ca186b1d | 749 | if ((TimeoutInMicroseconds != 0) && (Timeout == 0)) {\r |
c4671a67 | 750 | return EFI_TIMEOUT;\r |
751 | }\r | |
752 | \r | |
ca186b1d | 753 | Timeout -= CalculateAndStallInterval (Timeout);\r |
c4671a67 | 754 | }\r |
755 | \r | |
756 | return EFI_SUCCESS;\r | |
c4671a67 | 757 | }\r |
758 | \r | |
c4671a67 | 759 | /**\r |
d18d8a1d | 760 | This service switches the requested AP to be the BSP from that point onward.\r |
761 | This service changes the BSP for all purposes. This call can only be performed\r | |
c4671a67 | 762 | by the current BSP.\r |
763 | \r | |
d18d8a1d | 764 | This service switches the requested AP to be the BSP from that point onward.\r |
765 | This service changes the BSP for all purposes. The new BSP can take over the\r | |
766 | execution of the old BSP and continue seamlessly from where the old one left\r | |
767 | off. This service may not be supported after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r | |
c4671a67 | 768 | is signaled.\r |
769 | \r | |
d18d8a1d | 770 | If the BSP cannot be switched prior to the return from this service, then\r |
c4671a67 | 771 | EFI_UNSUPPORTED must be returned.\r |
772 | \r | |
773 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
d18d8a1d | 774 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r |
775 | BSP. The range is from 0 to the total number of\r | |
776 | logical processors minus 1. The total number of\r | |
c4671a67 | 777 | logical processors can be retrieved by\r |
778 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
d18d8a1d | 779 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r |
c4671a67 | 780 | enabled AP. Otherwise, it will be disabled.\r |
781 | \r | |
782 | @retval EFI_SUCCESS BSP successfully switched.\r | |
d18d8a1d | 783 | @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to\r |
c4671a67 | 784 | this service returning.\r |
785 | @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r | |
786 | @retval EFI_SUCCESS The calling processor is an AP.\r | |
787 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
788 | ProcessorNumber does not exist.\r | |
d18d8a1d | 789 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or\r |
c4671a67 | 790 | a disabled AP.\r |
791 | @retval EFI_NOT_READY The specified AP is busy.\r | |
792 | \r | |
793 | **/\r | |
794 | EFI_STATUS\r | |
795 | EFIAPI\r | |
796 | CpuMpServicesSwitchBSP (\r | |
797 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
798 | IN UINTN ProcessorNumber,\r | |
799 | IN BOOLEAN EnableOldBSP\r | |
800 | )\r | |
801 | {\r | |
a550d468 | 802 | UINTN Index;\r |
d18d8a1d | 803 | \r |
c4671a67 | 804 | if (!IsBSP ()) {\r |
805 | return EFI_DEVICE_ERROR;\r | |
806 | }\r | |
d18d8a1d | 807 | \r |
c4671a67 | 808 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r |
809 | return EFI_NOT_FOUND;\r | |
810 | }\r | |
d18d8a1d | 811 | \r |
c4671a67 | 812 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
813 | return EFI_INVALID_PARAMETER;\r | |
814 | }\r | |
815 | \r | |
816 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
817 | return EFI_INVALID_PARAMETER;\r | |
818 | }\r | |
d18d8a1d | 819 | \r |
c4671a67 | 820 | for (Index = 0; Index < gMPSystem.NumberOfProcessors; Index++) {\r |
821 | if ((gMPSystem.ProcessorData[Index].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
822 | break;\r | |
823 | }\r | |
824 | }\r | |
a550d468 | 825 | \r |
c4671a67 | 826 | ASSERT (Index != gMPSystem.NumberOfProcessors);\r |
d18d8a1d | 827 | \r |
a31a3b4a | 828 | gThread->MutexLock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 829 | if (gMPSystem.ProcessorData[ProcessorNumber].State != CPU_STATE_IDLE) {\r |
a31a3b4a | 830 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 831 | return EFI_NOT_READY;\r |
832 | }\r | |
a550d468 | 833 | \r |
a31a3b4a | 834 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
d18d8a1d | 835 | \r |
c4671a67 | 836 | // Skip for now as we need switch a bunch of stack stuff around and it's complex\r |
837 | // May not be worth it?\r | |
838 | return EFI_NOT_READY;\r | |
839 | }\r | |
840 | \r | |
c4671a67 | 841 | /**\r |
d18d8a1d | 842 | This service lets the caller enable or disable an AP from this point onward.\r |
c4671a67 | 843 | This service may only be called from the BSP.\r |
844 | \r | |
d18d8a1d | 845 | This service allows the caller enable or disable an AP from this point onward.\r |
846 | The caller can optionally specify the health status of the AP by Health. If\r | |
847 | an AP is being disabled, then the state of the disabled AP is implementation\r | |
848 | dependent. If an AP is enabled, then the implementation must guarantee that a\r | |
849 | complete initialization sequence is performed on the AP, so the AP is in a state\r | |
850 | that is compatible with an MP operating system. This service may not be supported\r | |
c4671a67 | 851 | after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled.\r |
852 | \r | |
d18d8a1d | 853 | If the enable or disable AP operation cannot be completed prior to the return\r |
c4671a67 | 854 | from this service, then EFI_UNSUPPORTED must be returned.\r |
855 | \r | |
856 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
d18d8a1d | 857 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r |
858 | BSP. The range is from 0 to the total number of\r | |
859 | logical processors minus 1. The total number of\r | |
c4671a67 | 860 | logical processors can be retrieved by\r |
861 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
d18d8a1d | 862 | @param[in] EnableAP Specifies the new state for the processor for\r |
c4671a67 | 863 | enabled, FALSE for disabled.\r |
d18d8a1d | 864 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies\r |
865 | the new health status of the AP. This flag\r | |
866 | corresponds to StatusFlag defined in\r | |
867 | EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only\r | |
868 | the PROCESSOR_HEALTH_STATUS_BIT is used. All other\r | |
869 | bits are ignored. If it is NULL, this parameter\r | |
c4671a67 | 870 | is ignored.\r |
871 | \r | |
872 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
d18d8a1d | 873 | @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed\r |
c4671a67 | 874 | prior to this service returning.\r |
875 | @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.\r | |
876 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
877 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber\r | |
878 | does not exist.\r | |
879 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.\r | |
880 | \r | |
881 | **/\r | |
882 | EFI_STATUS\r | |
883 | EFIAPI\r | |
884 | CpuMpServicesEnableDisableAP (\r | |
885 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
886 | IN UINTN ProcessorNumber,\r | |
887 | IN BOOLEAN EnableAP,\r | |
888 | IN UINT32 *HealthFlag OPTIONAL\r | |
889 | )\r | |
890 | {\r | |
891 | if (!IsBSP ()) {\r | |
892 | return EFI_DEVICE_ERROR;\r | |
893 | }\r | |
d18d8a1d | 894 | \r |
c4671a67 | 895 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r |
896 | return EFI_NOT_FOUND;\r | |
897 | }\r | |
d18d8a1d | 898 | \r |
c4671a67 | 899 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r |
900 | return EFI_INVALID_PARAMETER;\r | |
d18d8a1d | 901 | }\r |
c4671a67 | 902 | \r |
a31a3b4a | 903 | gThread->MutexLock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 904 | if (gMPSystem.ProcessorData[ProcessorNumber].State != CPU_STATE_IDLE) {\r |
a31a3b4a | 905 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 906 | return EFI_UNSUPPORTED;\r |
907 | }\r | |
a550d468 | 908 | \r |
a31a3b4a | 909 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 910 | \r |
c4671a67 | 911 | if (EnableAP) {\r |
912 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0 ) {\r | |
913 | gMPSystem.NumberOfEnabledProcessors++;\r | |
914 | }\r | |
a550d468 | 915 | \r |
c4671a67 | 916 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag |= PROCESSOR_ENABLED_BIT;\r |
917 | } else {\r | |
918 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == PROCESSOR_ENABLED_BIT ) {\r | |
919 | gMPSystem.NumberOfEnabledProcessors--;\r | |
920 | }\r | |
a550d468 | 921 | \r |
c4671a67 | 922 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag &= ~PROCESSOR_ENABLED_BIT;\r |
923 | }\r | |
d18d8a1d | 924 | \r |
c4671a67 | 925 | if (HealthFlag != NULL) {\r |
926 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag &= ~PROCESSOR_HEALTH_STATUS_BIT;\r | |
927 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag |= (*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT);\r | |
928 | }\r | |
d18d8a1d | 929 | \r |
c4671a67 | 930 | return EFI_SUCCESS;\r |
931 | }\r | |
932 | \r | |
c4671a67 | 933 | /**\r |
d18d8a1d | 934 | This return the handle number for the calling processor. This service may be\r |
c4671a67 | 935 | called from the BSP and APs.\r |
936 | \r | |
d18d8a1d | 937 | This service returns the processor handle number for the calling processor.\r |
938 | The returned value is in the range from 0 to the total number of logical\r | |
939 | processors minus 1. The total number of logical processors can be retrieved\r | |
940 | with EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). This service may be\r | |
941 | called from the BSP and APs. If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER\r | |
942 | is returned. Otherwise, the current processors handle number is returned in\r | |
c4671a67 | 943 | ProcessorNumber, and EFI_SUCCESS is returned.\r |
944 | \r | |
945 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
d18d8a1d | 946 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r |
947 | BSP. The range is from 0 to the total number of\r | |
948 | logical processors minus 1. The total number of\r | |
c4671a67 | 949 | logical processors can be retrieved by\r |
950 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
951 | \r | |
d18d8a1d | 952 | @retval EFI_SUCCESS The current processor handle number was returned\r |
c4671a67 | 953 | in ProcessorNumber.\r |
954 | @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.\r | |
955 | \r | |
956 | **/\r | |
957 | EFI_STATUS\r | |
958 | EFIAPI\r | |
959 | CpuMpServicesWhoAmI (\r | |
960 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
961 | OUT UINTN *ProcessorNumber\r | |
962 | )\r | |
963 | {\r | |
964 | UINTN Index;\r | |
965 | UINT64 ProcessorId;\r | |
d18d8a1d | 966 | \r |
c4671a67 | 967 | if (ProcessorNumber == NULL) {\r |
968 | return EFI_INVALID_PARAMETER;\r | |
969 | }\r | |
d18d8a1d | 970 | \r |
10d1be3e | 971 | ProcessorId = gThread->Self ();\r |
c4671a67 | 972 | for (Index = 0; Index < gMPSystem.NumberOfProcessors; Index++) {\r |
973 | if (gMPSystem.ProcessorData[Index].Info.ProcessorId == ProcessorId) {\r | |
974 | break;\r | |
975 | }\r | |
976 | }\r | |
977 | \r | |
978 | *ProcessorNumber = Index;\r | |
979 | return EFI_SUCCESS;\r | |
980 | }\r | |
981 | \r | |
d070eef8 | 982 | EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {\r |
c4671a67 | 983 | CpuMpServicesGetNumberOfProcessors,\r |
984 | CpuMpServicesGetProcessorInfo,\r | |
985 | CpuMpServicesStartupAllAps,\r | |
986 | CpuMpServicesStartupThisAP,\r | |
987 | CpuMpServicesSwitchBSP,\r | |
988 | CpuMpServicesEnableDisableAP,\r | |
989 | CpuMpServicesWhoAmI\r | |
990 | };\r | |
991 | \r | |
c4671a67 | 992 | /*++\r |
993 | If timeout occurs in StartupAllAps(), a timer is set, which invokes this\r | |
994 | procedure periodically to check whether all APs have finished.\r | |
995 | \r | |
996 | \r | |
997 | --*/\r | |
998 | VOID\r | |
999 | EFIAPI\r | |
1000 | CpuCheckAllAPsStatus (\r | |
a550d468 MK |
1001 | IN EFI_EVENT Event,\r |
1002 | IN VOID *Context\r | |
c4671a67 | 1003 | )\r |
1004 | {\r | |
1005 | UINTN ProcessorNumber;\r | |
1006 | UINTN NextNumber;\r | |
1007 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
1008 | PROCESSOR_DATA_BLOCK *NextData;\r | |
1009 | EFI_STATUS Status;\r | |
1010 | PROCESSOR_STATE ProcessorState;\r | |
8b6d0c05 | 1011 | UINTN Cpu;\r |
1012 | BOOLEAN Found;\r | |
c4671a67 | 1013 | \r |
8b6d0c05 | 1014 | if (gMPSystem.TimeoutActive) {\r |
ca186b1d | 1015 | gMPSystem.Timeout -= CalculateAndStallInterval (gMPSystem.Timeout);\r |
8b6d0c05 | 1016 | }\r |
d18d8a1d | 1017 | \r |
c4671a67 | 1018 | for (ProcessorNumber = 0; ProcessorNumber < gMPSystem.NumberOfProcessors; ProcessorNumber++) {\r |
8ab6d73c CF |
1019 | ProcessorData = &gMPSystem.ProcessorData[ProcessorNumber];\r |
1020 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
a550d468 | 1021 | // Skip BSP\r |
c4671a67 | 1022 | continue;\r |
1023 | }\r | |
1024 | \r | |
8b6d0c05 | 1025 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
1026 | // Skip Disabled processors\r | |
1027 | continue;\r | |
1028 | }\r | |
1029 | \r | |
c4671a67 | 1030 | // This is an Interrupt Service routine.\r |
1031 | // This can grab a lock that is held in a non-interrupt\r | |
1032 | // context. Meaning deadlock. Which is a bad thing.\r | |
1033 | // So, try lock it. If we can get it, cool, do our thing.\r | |
1034 | // otherwise, just dump out & try again on the next iteration.\r | |
1a160a74 | 1035 | Status = gThread->MutexTryLock (ProcessorData->StateLock);\r |
a550d468 | 1036 | if (EFI_ERROR (Status)) {\r |
c4671a67 | 1037 | return;\r |
1038 | }\r | |
a550d468 | 1039 | \r |
1a160a74 CF |
1040 | ProcessorState = ProcessorData->State;\r |
1041 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
c4671a67 | 1042 | \r |
1043 | switch (ProcessorState) {\r | |
a550d468 MK |
1044 | case CPU_STATE_FINISHED:\r |
1045 | if (gMPSystem.SingleThread) {\r | |
1046 | Status = GetNextBlockedNumber (&NextNumber);\r | |
1047 | if (!EFI_ERROR (Status)) {\r | |
1048 | NextData = &gMPSystem.ProcessorData[NextNumber];\r | |
c4671a67 | 1049 | \r |
a550d468 MK |
1050 | gThread->MutexLock (NextData->StateLock);\r |
1051 | NextData->State = CPU_STATE_READY;\r | |
1052 | gThread->MutexUnlock (NextData->StateLock);\r | |
c4671a67 | 1053 | \r |
a550d468 MK |
1054 | SetApProcedure (NextData, gMPSystem.Procedure, gMPSystem.ProcedureArgument);\r |
1055 | }\r | |
c4671a67 | 1056 | }\r |
c4671a67 | 1057 | \r |
a550d468 MK |
1058 | gThread->MutexLock (ProcessorData->StateLock);\r |
1059 | ProcessorData->State = CPU_STATE_IDLE;\r | |
1060 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
1061 | gMPSystem.FinishCount++;\r | |
1062 | break;\r | |
c4671a67 | 1063 | \r |
a550d468 MK |
1064 | default:\r |
1065 | break;\r | |
c4671a67 | 1066 | }\r |
1067 | }\r | |
d18d8a1d | 1068 | \r |
a550d468 | 1069 | if (gMPSystem.TimeoutActive && (gMPSystem.Timeout == 0)) {\r |
8b6d0c05 | 1070 | //\r |
1071 | // Timeout\r | |
1072 | //\r | |
1073 | if (gMPSystem.FailedList != NULL) {\r | |
1074 | for (ProcessorNumber = 0; ProcessorNumber < gMPSystem.NumberOfProcessors; ProcessorNumber++) {\r | |
8ab6d73c CF |
1075 | ProcessorData = &gMPSystem.ProcessorData[ProcessorNumber];\r |
1076 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
a550d468 | 1077 | // Skip BSP\r |
8b6d0c05 | 1078 | continue;\r |
1079 | }\r | |
c4671a67 | 1080 | \r |
8b6d0c05 | 1081 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
1082 | // Skip Disabled processors\r | |
1083 | continue;\r | |
1084 | }\r | |
d18d8a1d | 1085 | \r |
1086 | // Mark the\r | |
1a160a74 | 1087 | Status = gThread->MutexTryLock (ProcessorData->StateLock);\r |
a550d468 | 1088 | if (EFI_ERROR (Status)) {\r |
8b6d0c05 | 1089 | return;\r |
1090 | }\r | |
a550d468 | 1091 | \r |
1a160a74 CF |
1092 | ProcessorState = ProcessorData->State;\r |
1093 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
d18d8a1d | 1094 | \r |
8b6d0c05 | 1095 | if (ProcessorState != CPU_STATE_IDLE) {\r |
1096 | // If we are retrying make sure we don't double count\r | |
1097 | for (Cpu = 0, Found = FALSE; Cpu < gMPSystem.NumberOfProcessors; Cpu++) {\r | |
1098 | if (gMPSystem.FailedList[Cpu] == END_OF_CPU_LIST) {\r | |
1099 | break;\r | |
1100 | }\r | |
a550d468 | 1101 | \r |
8b6d0c05 | 1102 | if (gMPSystem.FailedList[ProcessorNumber] == Cpu) {\r |
1103 | Found = TRUE;\r | |
1104 | break;\r | |
1105 | }\r | |
1106 | }\r | |
a550d468 | 1107 | \r |
8b6d0c05 | 1108 | if (!Found) {\r |
1109 | gMPSystem.FailedList[gMPSystem.FailedListIndex++] = Cpu;\r | |
1110 | }\r | |
1111 | }\r | |
1112 | }\r | |
1113 | }\r | |
a550d468 | 1114 | \r |
8b6d0c05 | 1115 | // Force terminal exit\r |
1116 | gMPSystem.FinishCount = gMPSystem.StartCount;\r | |
1117 | }\r | |
1118 | \r | |
1119 | if (gMPSystem.FinishCount != gMPSystem.StartCount) {\r | |
1120 | return;\r | |
c4671a67 | 1121 | }\r |
d18d8a1d | 1122 | \r |
8b6d0c05 | 1123 | gBS->SetTimer (\r |
1124 | gMPSystem.CheckAllAPsEvent,\r | |
1125 | TimerCancel,\r | |
1126 | 0\r | |
1127 | );\r | |
1128 | \r | |
1129 | if (gMPSystem.FailedListIndex == 0) {\r | |
1130 | if (gMPSystem.FailedList != NULL) {\r | |
1131 | FreePool (gMPSystem.FailedList);\r | |
1132 | gMPSystem.FailedList = NULL;\r | |
1133 | }\r | |
1134 | }\r | |
1135 | \r | |
1136 | Status = gBS->SignalEvent (gMPSystem.WaitEvent);\r | |
c4671a67 | 1137 | \r |
a550d468 | 1138 | return;\r |
c4671a67 | 1139 | }\r |
1140 | \r | |
1141 | VOID\r | |
1142 | EFIAPI\r | |
1143 | CpuCheckThisAPStatus (\r | |
a550d468 MK |
1144 | IN EFI_EVENT Event,\r |
1145 | IN VOID *Context\r | |
c4671a67 | 1146 | )\r |
1147 | {\r | |
1148 | EFI_STATUS Status;\r | |
1149 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
1150 | PROCESSOR_STATE ProcessorState;\r | |
1151 | \r | |
a550d468 | 1152 | ProcessorData = (PROCESSOR_DATA_BLOCK *)Context;\r |
c4671a67 | 1153 | \r |
1154 | //\r | |
8b6d0c05 | 1155 | // This is an Interrupt Service routine.\r |
1156 | // that can grab a lock that is held in a non-interrupt\r | |
c4671a67 | 1157 | // context. Meaning deadlock. Which is a badddd thing.\r |
1158 | // So, try lock it. If we can get it, cool, do our thing.\r | |
1159 | // otherwise, just dump out & try again on the next iteration.\r | |
1160 | //\r | |
10d1be3e | 1161 | Status = gThread->MutexTryLock (ProcessorData->StateLock);\r |
a550d468 | 1162 | if (EFI_ERROR (Status)) {\r |
c4671a67 | 1163 | return;\r |
1164 | }\r | |
a550d468 | 1165 | \r |
c4671a67 | 1166 | ProcessorState = ProcessorData->State;\r |
10d1be3e | 1167 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
c4671a67 | 1168 | \r |
1169 | if (ProcessorState == CPU_STATE_FINISHED) {\r | |
1170 | Status = gBS->SetTimer (ProcessorData->CheckThisAPEvent, TimerCancel, 0);\r | |
1171 | ASSERT_EFI_ERROR (Status);\r | |
d18d8a1d | 1172 | \r |
c4671a67 | 1173 | Status = gBS->SignalEvent (gMPSystem.WaitEvent);\r |
1174 | ASSERT_EFI_ERROR (Status);\r | |
d18d8a1d | 1175 | \r |
10d1be3e | 1176 | gThread->MutexLock (ProcessorData->StateLock);\r |
c4671a67 | 1177 | ProcessorData->State = CPU_STATE_IDLE;\r |
10d1be3e | 1178 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
c4671a67 | 1179 | }\r |
1180 | \r | |
a550d468 | 1181 | return;\r |
c4671a67 | 1182 | }\r |
1183 | \r | |
c4671a67 | 1184 | /*++\r |
1185 | This function is called by all processors (both BSP and AP) once and collects MP related data\r | |
1186 | \r | |
1187 | MPSystemData - Pointer to the data structure containing MP related data\r | |
1188 | BSP - TRUE if the CPU is BSP\r | |
1189 | \r | |
1190 | EFI_SUCCESS - Data for the processor collected and filled in\r | |
1191 | \r | |
1192 | --*/\r | |
1193 | EFI_STATUS\r | |
1194 | FillInProcessorInformation (\r | |
a550d468 MK |
1195 | IN BOOLEAN BSP,\r |
1196 | IN UINTN ProcessorNumber\r | |
c4671a67 | 1197 | )\r |
1198 | {\r | |
a550d468 MK |
1199 | gMPSystem.ProcessorData[ProcessorNumber].Info.ProcessorId = gThread->Self ();\r |
1200 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag = PROCESSOR_ENABLED_BIT | PROCESSOR_HEALTH_STATUS_BIT;\r | |
c4671a67 | 1201 | if (BSP) {\r |
1202 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag |= PROCESSOR_AS_BSP_BIT;\r | |
1203 | }\r | |
d18d8a1d | 1204 | \r |
a550d468 | 1205 | gMPSystem.ProcessorData[ProcessorNumber].Info.Location.Package = (UINT32)ProcessorNumber;\r |
c4671a67 | 1206 | gMPSystem.ProcessorData[ProcessorNumber].Info.Location.Core = 0;\r |
1207 | gMPSystem.ProcessorData[ProcessorNumber].Info.Location.Thread = 0;\r | |
a550d468 | 1208 | gMPSystem.ProcessorData[ProcessorNumber].State = BSP ? CPU_STATE_BUSY : CPU_STATE_IDLE;\r |
d18d8a1d | 1209 | \r |
a550d468 MK |
1210 | gMPSystem.ProcessorData[ProcessorNumber].Procedure = NULL;\r |
1211 | gMPSystem.ProcessorData[ProcessorNumber].Parameter = NULL;\r | |
1212 | gMPSystem.ProcessorData[ProcessorNumber].StateLock = gThread->MutexInit ();\r | |
1213 | gMPSystem.ProcessorData[ProcessorNumber].ProcedureLock = gThread->MutexInit ();\r | |
c4671a67 | 1214 | \r |
1215 | return EFI_SUCCESS;\r | |
1216 | }\r | |
1217 | \r | |
1218 | VOID *\r | |
1219 | EFIAPI\r | |
1220 | CpuDriverApIdolLoop (\r | |
1221 | VOID *Context\r | |
1222 | )\r | |
1223 | {\r | |
1224 | EFI_AP_PROCEDURE Procedure;\r | |
1225 | VOID *Parameter;\r | |
1226 | UINTN ProcessorNumber;\r | |
1227 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
d18d8a1d | 1228 | \r |
c4671a67 | 1229 | ProcessorNumber = (UINTN)Context;\r |
a550d468 | 1230 | ProcessorData = &gMPSystem.ProcessorData[ProcessorNumber];\r |
d18d8a1d | 1231 | \r |
10d1be3e | 1232 | ProcessorData->Info.ProcessorId = gThread->Self ();\r |
d18d8a1d | 1233 | \r |
c4671a67 | 1234 | while (TRUE) {\r |
1235 | //\r | |
1236 | // Make a local copy on the stack to be extra safe\r | |
1237 | //\r | |
10d1be3e | 1238 | gThread->MutexLock (ProcessorData->ProcedureLock);\r |
c4671a67 | 1239 | Procedure = ProcessorData->Procedure;\r |
1240 | Parameter = ProcessorData->Parameter;\r | |
10d1be3e | 1241 | gThread->MutexUnlock (ProcessorData->ProcedureLock);\r |
d18d8a1d | 1242 | \r |
c4671a67 | 1243 | if (Procedure != NULL) {\r |
10d1be3e | 1244 | gThread->MutexLock (ProcessorData->StateLock);\r |
c4671a67 | 1245 | ProcessorData->State = CPU_STATE_BUSY;\r |
10d1be3e | 1246 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
d18d8a1d | 1247 | \r |
c4671a67 | 1248 | Procedure (Parameter);\r |
d18d8a1d | 1249 | \r |
10d1be3e | 1250 | gThread->MutexLock (ProcessorData->ProcedureLock);\r |
c4671a67 | 1251 | ProcessorData->Procedure = NULL;\r |
10d1be3e | 1252 | gThread->MutexUnlock (ProcessorData->ProcedureLock);\r |
d18d8a1d | 1253 | \r |
10d1be3e | 1254 | gThread->MutexLock (ProcessorData->StateLock);\r |
c4671a67 | 1255 | ProcessorData->State = CPU_STATE_FINISHED;\r |
d18d8a1d | 1256 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
c4671a67 | 1257 | }\r |
d18d8a1d | 1258 | \r |
c4671a67 | 1259 | // Poll 5 times a seconds, 200ms\r |
1260 | // Don't want to burn too many system resources doing nothing.\r | |
1ef41207 | 1261 | gEmuThunk->Sleep (200 * 1000);\r |
c4671a67 | 1262 | }\r |
d18d8a1d | 1263 | \r |
c4671a67 | 1264 | return 0;\r |
1265 | }\r | |
1266 | \r | |
c4671a67 | 1267 | EFI_STATUS\r |
1268 | InitializeMpSystemData (\r | |
a550d468 | 1269 | IN UINTN NumberOfProcessors\r |
c4671a67 | 1270 | )\r |
1271 | {\r | |
a550d468 MK |
1272 | EFI_STATUS Status;\r |
1273 | UINTN Index;\r | |
d18d8a1d | 1274 | \r |
c4671a67 | 1275 | //\r |
1276 | // Clear the data structure area first.\r | |
1277 | //\r | |
1278 | ZeroMem (&gMPSystem, sizeof (MP_SYSTEM_DATA));\r | |
1279 | \r | |
1280 | //\r | |
1281 | // First BSP fills and inits all known values, including it's own records.\r | |
1282 | //\r | |
a550d468 MK |
1283 | gMPSystem.NumberOfProcessors = NumberOfProcessors;\r |
1284 | gMPSystem.NumberOfEnabledProcessors = NumberOfProcessors;\r | |
d18d8a1d | 1285 | \r |
c4671a67 | 1286 | gMPSystem.ProcessorData = AllocateZeroPool (gMPSystem.NumberOfProcessors * sizeof (PROCESSOR_DATA_BLOCK));\r |
1287 | ASSERT (gMPSystem.ProcessorData != NULL);\r | |
1288 | \r | |
1289 | FillInProcessorInformation (TRUE, 0);\r | |
d18d8a1d | 1290 | \r |
c4671a67 | 1291 | Status = gBS->CreateEvent (\r |
1292 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
1293 | TPL_CALLBACK,\r | |
1294 | CpuCheckAllAPsStatus,\r | |
1295 | NULL,\r | |
1296 | &gMPSystem.CheckAllAPsEvent\r | |
1297 | );\r | |
1298 | ASSERT_EFI_ERROR (Status);\r | |
d18d8a1d | 1299 | \r |
c4671a67 | 1300 | for (Index = 0; Index < gMPSystem.NumberOfProcessors; Index++) {\r |
1301 | if ((gMPSystem.ProcessorData[Index].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
a550d468 | 1302 | // Skip BSP\r |
c4671a67 | 1303 | continue;\r |
1304 | }\r | |
d18d8a1d | 1305 | \r |
c4671a67 | 1306 | FillInProcessorInformation (FALSE, Index);\r |
d18d8a1d | 1307 | \r |
10d1be3e | 1308 | Status = gThread->CreateThread (\r |
d18d8a1d | 1309 | (VOID *)&gMPSystem.ProcessorData[Index].Info.ProcessorId,\r |
c4671a67 | 1310 | NULL,\r |
1311 | CpuDriverApIdolLoop,\r | |
1312 | (VOID *)Index\r | |
1313 | );\r | |
d18d8a1d | 1314 | \r |
c4671a67 | 1315 | Status = gBS->CreateEvent (\r |
a550d468 MK |
1316 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r |
1317 | TPL_CALLBACK,\r | |
1318 | CpuCheckThisAPStatus,\r | |
1319 | (VOID *)&gMPSystem.ProcessorData[Index],\r | |
1320 | &gMPSystem.ProcessorData[Index].CheckThisAPEvent\r | |
1321 | );\r | |
c4671a67 | 1322 | }\r |
1323 | \r | |
1324 | return EFI_SUCCESS;\r | |
1325 | }\r | |
1326 | \r | |
c4671a67 | 1327 | /**\r |
1328 | Invoke a notification event\r | |
1329 | \r | |
1330 | @param Event Event whose notification function is being invoked.\r | |
1331 | @param Context The pointer to the notification function's context,\r | |
1332 | which is implementation-dependent.\r | |
1333 | \r | |
1334 | **/\r | |
1335 | VOID\r | |
1336 | EFIAPI\r | |
1337 | CpuReadToBootFunction (\r | |
a550d468 MK |
1338 | IN EFI_EVENT Event,\r |
1339 | IN VOID *Context\r | |
c4671a67 | 1340 | )\r |
1341 | {\r | |
1342 | gReadToBoot = TRUE;\r | |
1343 | }\r | |
1344 | \r | |
c4671a67 | 1345 | EFI_STATUS\r |
1346 | CpuMpServicesInit (\r | |
a550d468 | 1347 | OUT UINTN *MaxCpus\r |
c4671a67 | 1348 | )\r |
1349 | {\r | |
a550d468 MK |
1350 | EFI_STATUS Status;\r |
1351 | EFI_HANDLE Handle;\r | |
1352 | EMU_IO_THUNK_PROTOCOL *IoThunk;\r | |
d18d8a1d | 1353 | \r |
a0af6b27 | 1354 | *MaxCpus = 1; // BSP\r |
a550d468 | 1355 | IoThunk = GetIoThunkInstance (&gEmuThreadThunkProtocolGuid, 0);\r |
c4671a67 | 1356 | if (IoThunk != NULL) {\r |
1357 | Status = IoThunk->Open (IoThunk);\r | |
1358 | if (!EFI_ERROR (Status)) {\r | |
1359 | if (IoThunk->ConfigString != NULL) {\r | |
a0af6b27 | 1360 | *MaxCpus += StrDecimalToUintn (IoThunk->ConfigString);\r |
a550d468 | 1361 | gThread = IoThunk->Interface;\r |
c4671a67 | 1362 | }\r |
1363 | }\r | |
1364 | }\r | |
1365 | \r | |
a0af6b27 | 1366 | if (*MaxCpus == 1) {\r |
c4671a67 | 1367 | // We are not MP so nothing to do\r |
1368 | return EFI_SUCCESS;\r | |
1369 | }\r | |
1370 | \r | |
a550d468 | 1371 | gPollInterval = (UINTN)PcdGet64 (PcdEmuMpServicesPollingInterval);\r |
c4671a67 | 1372 | \r |
a550d468 | 1373 | Status = InitializeMpSystemData (*MaxCpus);\r |
c4671a67 | 1374 | if (EFI_ERROR (Status)) {\r |
1375 | return Status;\r | |
1376 | }\r | |
1377 | \r | |
1378 | Status = EfiCreateEventReadyToBootEx (TPL_CALLBACK, CpuReadToBootFunction, NULL, &gReadToBootEvent);\r | |
1379 | ASSERT_EFI_ERROR (Status);\r | |
1380 | \r | |
1381 | //\r | |
1382 | // Now install the MP services protocol.\r | |
1383 | //\r | |
1384 | Handle = NULL;\r | |
1385 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1386 | &Handle,\r | |
a550d468 MK |
1387 | &gEfiMpServiceProtocolGuid,\r |
1388 | &mMpServicesTemplate,\r | |
c4671a67 | 1389 | NULL\r |
1390 | );\r | |
1391 | return Status;\r | |
1392 | }\r |