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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 | |
40 | \r | |
41 | MP_SYSTEM_DATA gMPSystem;\r | |
d18d8a1d | 42 | EMU_THREAD_THUNK_PROTOCOL *gThread = NULL;\r |
c4671a67 | 43 | EFI_EVENT gReadToBootEvent;\r |
44 | BOOLEAN gReadToBoot = FALSE;\r | |
45 | UINTN gPollInterval;\r | |
46 | \r | |
47 | \r | |
48 | BOOLEAN\r | |
49 | IsBSP (\r | |
50 | VOID\r | |
51 | )\r | |
52 | {\r | |
53 | EFI_STATUS Status;\r | |
54 | UINTN ProcessorNumber;\r | |
d18d8a1d | 55 | \r |
d070eef8 | 56 | Status = CpuMpServicesWhoAmI (&mMpServicesTemplate, &ProcessorNumber);\r |
c4671a67 | 57 | if (EFI_ERROR (Status)) {\r |
58 | return FALSE;\r | |
59 | }\r | |
d18d8a1d | 60 | \r |
c4671a67 | 61 | return (gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0;\r |
62 | }\r | |
63 | \r | |
64 | \r | |
65 | VOID\r | |
66 | SetApProcedure (\r | |
67 | IN PROCESSOR_DATA_BLOCK *Processor,\r | |
68 | IN EFI_AP_PROCEDURE Procedure,\r | |
69 | IN VOID *ProcedureArgument\r | |
70 | )\r | |
71 | {\r | |
10d1be3e | 72 | gThread->MutexLock (Processor->ProcedureLock);\r |
c4671a67 | 73 | Processor->Parameter = ProcedureArgument;\r |
74 | Processor->Procedure = Procedure;\r | |
10d1be3e | 75 | gThread->MutexUnlock (Processor->ProcedureLock);\r |
c4671a67 | 76 | }\r |
77 | \r | |
78 | \r | |
79 | EFI_STATUS\r | |
80 | GetNextBlockedNumber (\r | |
81 | OUT UINTN *NextNumber\r | |
82 | )\r | |
83 | {\r | |
84 | UINTN Number;\r | |
85 | PROCESSOR_STATE ProcessorState;\r | |
86 | PROCESSOR_DATA_BLOCK *Data;\r | |
87 | \r | |
88 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
89 | Data = &gMPSystem.ProcessorData[Number];\r | |
90 | if ((Data->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
91 | // Skip BSP\r | |
92 | continue;\r | |
93 | }\r | |
94 | \r | |
10d1be3e | 95 | gThread->MutexLock (Data->StateLock);\r |
c4671a67 | 96 | ProcessorState = Data->State;\r |
10d1be3e | 97 | gThread->MutexUnlock (Data->StateLock);\r |
c4671a67 | 98 | \r |
99 | if (ProcessorState == CPU_STATE_BLOCKED) {\r | |
100 | *NextNumber = Number;\r | |
101 | return EFI_SUCCESS;\r | |
102 | }\r | |
103 | }\r | |
104 | \r | |
105 | return EFI_NOT_FOUND;\r | |
106 | }\r | |
107 | \r | |
ca186b1d CF |
108 | /**\r |
109 | * Calculated and stalled the interval time by BSP to check whether\r | |
110 | * the APs have finished.\r | |
111 | *\r | |
112 | * @param[in] Timeout The time limit in microseconds for\r | |
113 | * APs to return from Procedure.\r | |
114 | *\r | |
115 | * @retval StallTime Time of execution stall.\r | |
116 | **/\r | |
117 | UINTN\r | |
118 | CalculateAndStallInterval (\r | |
119 | IN UINTN Timeout\r | |
120 | )\r | |
121 | {\r | |
122 | UINTN StallTime;\r | |
c4671a67 | 123 | \r |
ca186b1d CF |
124 | if (Timeout < gPollInterval && Timeout != 0) {\r |
125 | StallTime = Timeout;\r | |
126 | } else {\r | |
127 | StallTime = gPollInterval;\r | |
128 | }\r | |
129 | gBS->Stall (StallTime);\r | |
c4671a67 | 130 | \r |
ca186b1d CF |
131 | return StallTime;\r |
132 | }\r | |
c4671a67 | 133 | \r |
134 | /**\r | |
135 | This service retrieves the number of logical processor in the platform\r | |
136 | and the number of those logical processors that are enabled on this boot.\r | |
137 | This service may only be called from the BSP.\r | |
138 | \r | |
139 | This function is used to retrieve the following information:\r | |
140 | - The number of logical processors that are present in the system.\r | |
d18d8a1d | 141 | - The number of enabled logical processors in the system at the instant\r |
c4671a67 | 142 | this call is made.\r |
143 | \r | |
d18d8a1d | 144 | Because MP Service Protocol provides services to enable and disable processors\r |
145 | dynamically, the number of enabled logical processors may vary during the\r | |
c4671a67 | 146 | course of a boot session.\r |
d18d8a1d | 147 | \r |
148 | If this service is called from an AP, then EFI_DEVICE_ERROR is returned.\r | |
149 | If NumberOfProcessors or NumberOfEnabledProcessors is NULL, then\r | |
150 | EFI_INVALID_PARAMETER is returned. Otherwise, the total number of processors\r | |
151 | is returned in NumberOfProcessors, the number of currently enabled processor\r | |
c4671a67 | 152 | is returned in NumberOfEnabledProcessors, and EFI_SUCCESS is returned.\r |
153 | \r | |
154 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
155 | instance.\r | |
156 | @param[out] NumberOfProcessors Pointer to the total number of logical\r | |
157 | processors in the system, including the BSP\r | |
158 | and disabled APs.\r | |
159 | @param[out] NumberOfEnabledProcessors Pointer to the number of enabled logical\r | |
160 | processors that exist in system, including\r | |
161 | the BSP.\r | |
162 | \r | |
d18d8a1d | 163 | @retval EFI_SUCCESS The number of logical processors and enabled\r |
c4671a67 | 164 | logical processors was retrieved.\r |
165 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
166 | @retval EFI_INVALID_PARAMETER NumberOfProcessors is NULL.\r | |
167 | @retval EFI_INVALID_PARAMETER NumberOfEnabledProcessors is NULL.\r | |
168 | \r | |
169 | **/\r | |
170 | EFI_STATUS\r | |
171 | EFIAPI\r | |
172 | CpuMpServicesGetNumberOfProcessors (\r | |
173 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
174 | OUT UINTN *NumberOfProcessors,\r | |
175 | OUT UINTN *NumberOfEnabledProcessors\r | |
176 | )\r | |
177 | {\r | |
178 | if ((NumberOfProcessors == NULL) || (NumberOfEnabledProcessors == NULL)) {\r | |
179 | return EFI_INVALID_PARAMETER;\r | |
180 | }\r | |
d18d8a1d | 181 | \r |
c4671a67 | 182 | if (!IsBSP ()) {\r |
183 | return EFI_DEVICE_ERROR;\r | |
184 | }\r | |
d18d8a1d | 185 | \r |
c4671a67 | 186 | *NumberOfProcessors = gMPSystem.NumberOfProcessors;\r |
187 | *NumberOfEnabledProcessors = gMPSystem.NumberOfEnabledProcessors;\r | |
188 | return EFI_SUCCESS;\r | |
189 | }\r | |
190 | \r | |
191 | \r | |
192 | \r | |
193 | /**\r | |
194 | Gets detailed MP-related information on the requested processor at the\r | |
195 | instant this call is made. This service may only be called from the BSP.\r | |
196 | \r | |
d18d8a1d | 197 | This service retrieves detailed MP-related information about any processor\r |
c4671a67 | 198 | on the platform. Note the following:\r |
199 | - The processor information may change during the course of a boot session.\r | |
200 | - The information presented here is entirely MP related.\r | |
d18d8a1d | 201 | \r |
c4671a67 | 202 | Information regarding the number of caches and their sizes, frequency of operation,\r |
d18d8a1d | 203 | slot numbers is all considered platform-related information and is not provided\r |
c4671a67 | 204 | by this service.\r |
205 | \r | |
206 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
207 | instance.\r | |
208 | @param[in] ProcessorNumber The handle number of processor.\r | |
209 | @param[out] ProcessorInfoBuffer A pointer to the buffer where information for\r | |
210 | the requested processor is deposited.\r | |
211 | \r | |
212 | @retval EFI_SUCCESS Processor information was returned.\r | |
213 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
214 | @retval EFI_INVALID_PARAMETER ProcessorInfoBuffer is NULL.\r | |
215 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
216 | ProcessorNumber does not exist in the platform.\r | |
217 | \r | |
218 | **/\r | |
219 | EFI_STATUS\r | |
220 | EFIAPI\r | |
221 | CpuMpServicesGetProcessorInfo (\r | |
222 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
223 | IN UINTN ProcessorNumber,\r | |
224 | OUT EFI_PROCESSOR_INFORMATION *ProcessorInfoBuffer\r | |
225 | )\r | |
226 | {\r | |
227 | if (ProcessorInfoBuffer == NULL) {\r | |
228 | return EFI_INVALID_PARAMETER;\r | |
229 | }\r | |
d18d8a1d | 230 | \r |
c4671a67 | 231 | if (!IsBSP ()) {\r |
232 | return EFI_DEVICE_ERROR;\r | |
233 | }\r | |
d18d8a1d | 234 | \r |
c4671a67 | 235 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r |
236 | return EFI_NOT_FOUND;\r | |
237 | }\r | |
d18d8a1d | 238 | \r |
c4671a67 | 239 | CopyMem (ProcessorInfoBuffer, &gMPSystem.ProcessorData[ProcessorNumber], sizeof (EFI_PROCESSOR_INFORMATION));\r |
240 | return EFI_SUCCESS;\r | |
241 | }\r | |
242 | \r | |
243 | \r | |
244 | /**\r | |
d18d8a1d | 245 | This service executes a caller provided function on all enabled APs. APs can\r |
246 | run either simultaneously or one at a time in sequence. This service supports\r | |
247 | both blocking and non-blocking requests. The non-blocking requests use EFI\r | |
248 | events so the BSP can detect when the APs have finished. This service may only\r | |
c4671a67 | 249 | be called from the BSP.\r |
250 | \r | |
d18d8a1d | 251 | This function is used to dispatch all the enabled APs to the function specified\r |
252 | by Procedure. If any enabled AP is busy, then EFI_NOT_READY is returned\r | |
c4671a67 | 253 | immediately and Procedure is not started on any AP.\r |
254 | \r | |
d18d8a1d | 255 | If SingleThread is TRUE, all the enabled APs execute the function specified by\r |
256 | Procedure one by one, in ascending order of processor handle number. Otherwise,\r | |
c4671a67 | 257 | all the enabled APs execute the function specified by Procedure simultaneously.\r |
258 | \r | |
d18d8a1d | 259 | If WaitEvent is NULL, execution is in blocking mode. The BSP waits until all\r |
260 | APs finish or TimeoutInMicroseconds expires. Otherwise, execution is in non-blocking\r | |
261 | mode, and the BSP returns from this service without waiting for APs. If a\r | |
262 | non-blocking mode is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r | |
c4671a67 | 263 | is signaled, then EFI_UNSUPPORTED must be returned.\r |
264 | \r | |
d18d8a1d | 265 | If the timeout specified by TimeoutInMicroseconds expires before all APs return\r |
266 | from Procedure, then Procedure on the failed APs is terminated. All enabled APs\r | |
c4671a67 | 267 | are always available for further calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r |
d18d8a1d | 268 | and EFI_MP_SERVICES_PROTOCOL.StartupThisAP(). If FailedCpuList is not NULL, its\r |
269 | content points to the list of processor handle numbers in which Procedure was\r | |
c4671a67 | 270 | terminated.\r |
271 | \r | |
d18d8a1d | 272 | Note: It is the responsibility of the consumer of the EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r |
273 | to make sure that the nature of the code that is executed on the BSP and the\r | |
274 | dispatched APs is well controlled. The MP Services Protocol does not guarantee\r | |
275 | that the Procedure function is MP-safe. Hence, the tasks that can be run in\r | |
276 | parallel are limited to certain independent tasks and well-controlled exclusive\r | |
277 | code. EFI services and protocols may not be called by APs unless otherwise\r | |
c4671a67 | 278 | specified.\r |
279 | \r | |
d18d8a1d | 280 | In blocking execution mode, BSP waits until all APs finish or\r |
c4671a67 | 281 | TimeoutInMicroseconds expires.\r |
282 | \r | |
d18d8a1d | 283 | In non-blocking execution mode, BSP is freed to return to the caller and then\r |
284 | proceed to the next task without having to wait for APs. The following\r | |
c4671a67 | 285 | sequence needs to occur in a non-blocking execution mode:\r |
286 | \r | |
d18d8a1d | 287 | -# The caller that intends to use this MP Services Protocol in non-blocking\r |
288 | mode creates WaitEvent by calling the EFI CreateEvent() service. The caller\r | |
289 | invokes EFI_MP_SERVICES_PROTOCOL.StartupAllAPs(). If the parameter WaitEvent\r | |
290 | is not NULL, then StartupAllAPs() executes in non-blocking mode. It requests\r | |
291 | the function specified by Procedure to be started on all the enabled APs,\r | |
c4671a67 | 292 | and releases the BSP to continue with other tasks.\r |
d18d8a1d | 293 | -# The caller can use the CheckEvent() and WaitForEvent() services to check\r |
c4671a67 | 294 | the state of the WaitEvent created in step 1.\r |
d18d8a1d | 295 | -# When the APs complete their task or TimeoutInMicroSecondss expires, the MP\r |
296 | Service signals WaitEvent by calling the EFI SignalEvent() function. If\r | |
297 | FailedCpuList is not NULL, its content is available when WaitEvent is\r | |
298 | signaled. If all APs returned from Procedure prior to the timeout, then\r | |
299 | FailedCpuList is set to NULL. If not all APs return from Procedure before\r | |
300 | the timeout, then FailedCpuList is filled in with the list of the failed\r | |
301 | APs. The buffer is allocated by MP Service Protocol using AllocatePool().\r | |
c4671a67 | 302 | It is the caller's responsibility to free the buffer with FreePool() service.\r |
303 | -# This invocation of SignalEvent() function informs the caller that invoked\r | |
304 | EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() that either all the APs completed\r | |
d18d8a1d | 305 | the specified task or a timeout occurred. The contents of FailedCpuList\r |
306 | can be examined to determine which APs did not complete the specified task\r | |
c4671a67 | 307 | prior to the timeout.\r |
308 | \r | |
309 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
310 | instance.\r | |
d18d8a1d | 311 | @param[in] Procedure A pointer to the function to be run on\r |
c4671a67 | 312 | enabled APs of the system. See type\r |
313 | EFI_AP_PROCEDURE.\r | |
d18d8a1d | 314 | @param[in] SingleThread If TRUE, then all the enabled APs execute\r |
315 | the function specified by Procedure one by\r | |
316 | one, in ascending order of processor handle\r | |
317 | number. If FALSE, then all the enabled APs\r | |
c4671a67 | 318 | execute the function specified by Procedure\r |
319 | simultaneously.\r | |
320 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
d18d8a1d | 321 | service. If it is NULL, then execute in\r |
322 | blocking mode. BSP waits until all APs finish\r | |
323 | or TimeoutInMicroseconds expires. If it's\r | |
324 | not NULL, then execute in non-blocking mode.\r | |
325 | BSP requests the function specified by\r | |
326 | Procedure to be started on all the enabled\r | |
327 | APs, and go on executing immediately. If\r | |
c4671a67 | 328 | all return from Procedure, or TimeoutInMicroseconds\r |
d18d8a1d | 329 | expires, this event is signaled. The BSP\r |
330 | can use the CheckEvent() or WaitForEvent()\r | |
331 | services to check the state of event. Type\r | |
332 | EFI_EVENT is defined in CreateEvent() in\r | |
333 | the Unified Extensible Firmware Interface\r | |
334 | Specification.\r | |
335 | @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for\r | |
336 | APs to return from Procedure, either for\r | |
337 | blocking or non-blocking mode. Zero means\r | |
338 | infinity. If the timeout expires before\r | |
c4671a67 | 339 | all APs return from Procedure, then Procedure\r |
d18d8a1d | 340 | on the failed APs is terminated. All enabled\r |
341 | APs are available for next function assigned\r | |
342 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
c4671a67 | 343 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r |
d18d8a1d | 344 | If the timeout expires in blocking mode,\r |
345 | BSP returns EFI_TIMEOUT. If the timeout\r | |
346 | expires in non-blocking mode, WaitEvent\r | |
c4671a67 | 347 | is signaled with SignalEvent().\r |
d18d8a1d | 348 | @param[in] ProcedureArgument The parameter passed into Procedure for\r |
c4671a67 | 349 | all APs.\r |
d18d8a1d | 350 | @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,\r |
351 | if all APs finish successfully, then its\r | |
352 | content is set to NULL. If not all APs\r | |
353 | finish before timeout expires, then its\r | |
354 | content is set to address of the buffer\r | |
355 | holding handle numbers of the failed APs.\r | |
356 | The buffer is allocated by MP Service Protocol,\r | |
357 | and it's the caller's responsibility to\r | |
c4671a67 | 358 | free the buffer with FreePool() service.\r |
d18d8a1d | 359 | In blocking mode, it is ready for consumption\r |
360 | when the call returns. In non-blocking mode,\r | |
361 | it is ready when WaitEvent is signaled. The\r | |
362 | list of failed CPU is terminated by\r | |
c4671a67 | 363 | END_OF_CPU_LIST.\r |
364 | \r | |
d18d8a1d | 365 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r |
c4671a67 | 366 | the timeout expired.\r |
d18d8a1d | 367 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r |
c4671a67 | 368 | to all enabled APs.\r |
d18d8a1d | 369 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r |
370 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
c4671a67 | 371 | signaled.\r |
372 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
373 | @retval EFI_NOT_STARTED No enabled APs exist in the system.\r | |
374 | @retval EFI_NOT_READY Any enabled APs are busy.\r | |
d18d8a1d | 375 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r |
c4671a67 | 376 | all enabled APs have finished.\r |
377 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
378 | \r | |
379 | **/\r | |
380 | EFI_STATUS\r | |
381 | EFIAPI\r | |
382 | CpuMpServicesStartupAllAps (\r | |
383 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
384 | IN EFI_AP_PROCEDURE Procedure,\r | |
385 | IN BOOLEAN SingleThread,\r | |
386 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
387 | IN UINTN TimeoutInMicroseconds,\r | |
388 | IN VOID *ProcedureArgument OPTIONAL,\r | |
389 | OUT UINTN **FailedCpuList OPTIONAL\r | |
390 | )\r | |
391 | {\r | |
392 | EFI_STATUS Status;\r | |
393 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
c4671a67 | 394 | UINTN Number;\r |
395 | UINTN NextNumber;\r | |
396 | PROCESSOR_STATE APInitialState;\r | |
397 | PROCESSOR_STATE ProcessorState;\r | |
ca186b1d | 398 | UINTN Timeout;\r |
c4671a67 | 399 | \r |
400 | \r | |
401 | if (!IsBSP ()) {\r | |
402 | return EFI_DEVICE_ERROR;\r | |
403 | }\r | |
d18d8a1d | 404 | \r |
c4671a67 | 405 | if (gMPSystem.NumberOfProcessors == 1) {\r |
406 | return EFI_NOT_STARTED;\r | |
407 | }\r | |
408 | \r | |
409 | if (Procedure == NULL) {\r | |
410 | return EFI_INVALID_PARAMETER;\r | |
411 | }\r | |
d18d8a1d | 412 | \r |
c4671a67 | 413 | if ((WaitEvent != NULL) && gReadToBoot) {\r |
414 | return EFI_UNSUPPORTED;\r | |
415 | }\r | |
d18d8a1d | 416 | \r |
c156d27b CF |
417 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r |
418 | ProcessorData = &gMPSystem.ProcessorData[Number];\r | |
419 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
420 | // Skip BSP\r | |
421 | continue;\r | |
422 | }\r | |
423 | \r | |
424 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r | |
425 | // Skip Disabled processors\r | |
426 | continue;\r | |
427 | }\r | |
428 | gThread->MutexLock(ProcessorData->StateLock);\r | |
429 | if (ProcessorData->State != CPU_STATE_IDLE) {\r | |
430 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
431 | return EFI_NOT_READY;\r | |
432 | }\r | |
433 | gThread->MutexUnlock(ProcessorData->StateLock);\r | |
434 | }\r | |
d18d8a1d | 435 | \r |
c4671a67 | 436 | if (FailedCpuList != NULL) {\r |
8b6d0c05 | 437 | gMPSystem.FailedList = AllocatePool ((gMPSystem.NumberOfProcessors + 1) * sizeof (UINTN));\r |
438 | if (gMPSystem.FailedList == NULL) {\r | |
439 | return EFI_OUT_OF_RESOURCES;\r | |
440 | }\r | |
441 | SetMemN (gMPSystem.FailedList, (gMPSystem.NumberOfProcessors + 1) * sizeof (UINTN), END_OF_CPU_LIST);\r | |
442 | gMPSystem.FailedListIndex = 0;\r | |
443 | *FailedCpuList = gMPSystem.FailedList;\r | |
c4671a67 | 444 | }\r |
445 | \r | |
446 | Timeout = TimeoutInMicroseconds;\r | |
447 | \r | |
8b6d0c05 | 448 | ProcessorData = NULL;\r |
c4671a67 | 449 | \r |
8b6d0c05 | 450 | gMPSystem.FinishCount = 0;\r |
451 | gMPSystem.StartCount = 0;\r | |
452 | gMPSystem.SingleThread = SingleThread;\r | |
453 | APInitialState = CPU_STATE_READY;\r | |
c4671a67 | 454 | \r |
455 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
456 | ProcessorData = &gMPSystem.ProcessorData[Number];\r | |
457 | \r | |
458 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
459 | // Skip BSP\r | |
460 | continue;\r | |
461 | }\r | |
462 | \r | |
8b6d0c05 | 463 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
464 | // Skip Disabled processors\r | |
465 | gMPSystem.FailedList[gMPSystem.FailedListIndex++] = Number;\r | |
466 | continue;\r | |
467 | }\r | |
468 | \r | |
c4671a67 | 469 | //\r |
470 | // Get APs prepared, and put failing APs into FailedCpuList\r | |
471 | // if "SingleThread", only 1 AP will put to ready state, other AP will be put to ready\r | |
472 | // state 1 by 1, until the previous 1 finished its task\r | |
473 | // if not "SingleThread", all APs are put to ready state from the beginning\r | |
474 | //\r | |
a31a3b4a | 475 | gThread->MutexLock(ProcessorData->StateLock);\r |
c156d27b CF |
476 | ASSERT (ProcessorData->State == CPU_STATE_IDLE);\r |
477 | ProcessorData->State = APInitialState;\r | |
478 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
c4671a67 | 479 | \r |
c156d27b CF |
480 | gMPSystem.StartCount++;\r |
481 | if (SingleThread) {\r | |
482 | APInitialState = CPU_STATE_BLOCKED;\r | |
c4671a67 | 483 | }\r |
484 | }\r | |
d18d8a1d | 485 | \r |
8b6d0c05 | 486 | if (WaitEvent != NULL) {\r |
487 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
d18d8a1d | 488 | ProcessorData = &gMPSystem.ProcessorData[Number];\r |
8b6d0c05 | 489 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r |
490 | // Skip BSP\r | |
491 | continue;\r | |
492 | }\r | |
493 | \r | |
494 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r | |
495 | // Skip Disabled processors\r | |
496 | continue;\r | |
497 | }\r | |
d18d8a1d | 498 | \r |
5152f642 CF |
499 | gThread->MutexLock (ProcessorData->StateLock);\r |
500 | ProcessorState = ProcessorData->State;\r | |
501 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
502 | \r | |
503 | if (ProcessorState == CPU_STATE_READY) {\r | |
504 | SetApProcedure (ProcessorData, Procedure, ProcedureArgument);\r | |
505 | }\r | |
c4671a67 | 506 | }\r |
8b6d0c05 | 507 | \r |
508 | //\r | |
509 | // Save data into private data structure, and create timer to poll AP state before exiting\r | |
510 | //\r | |
511 | gMPSystem.Procedure = Procedure;\r | |
512 | gMPSystem.ProcedureArgument = ProcedureArgument;\r | |
513 | gMPSystem.WaitEvent = WaitEvent;\r | |
514 | gMPSystem.Timeout = TimeoutInMicroseconds;\r | |
515 | gMPSystem.TimeoutActive = (BOOLEAN)(TimeoutInMicroseconds != 0);\r | |
516 | Status = gBS->SetTimer (\r | |
517 | gMPSystem.CheckAllAPsEvent,\r | |
518 | TimerPeriodic,\r | |
519 | gPollInterval\r | |
520 | );\r | |
521 | return Status;\r | |
522 | \r | |
c4671a67 | 523 | }\r |
524 | \r | |
525 | while (TRUE) {\r | |
526 | for (Number = 0; Number < gMPSystem.NumberOfProcessors; Number++) {\r | |
d18d8a1d | 527 | ProcessorData = &gMPSystem.ProcessorData[Number];\r |
c4671a67 | 528 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r |
529 | // Skip BSP\r | |
530 | continue;\r | |
531 | }\r | |
532 | \r | |
8b6d0c05 | 533 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
534 | // Skip Disabled processors\r | |
535 | continue;\r | |
536 | }\r | |
537 | \r | |
10d1be3e | 538 | gThread->MutexLock (ProcessorData->StateLock);\r |
c4671a67 | 539 | ProcessorState = ProcessorData->State;\r |
10d1be3e | 540 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
c4671a67 | 541 | \r |
542 | switch (ProcessorState) {\r | |
543 | case CPU_STATE_READY:\r | |
544 | SetApProcedure (ProcessorData, Procedure, ProcedureArgument);\r | |
545 | break;\r | |
546 | \r | |
547 | case CPU_STATE_FINISHED:\r | |
548 | gMPSystem.FinishCount++;\r | |
549 | if (SingleThread) {\r | |
550 | Status = GetNextBlockedNumber (&NextNumber);\r | |
551 | if (!EFI_ERROR (Status)) {\r | |
f9032449 | 552 | gThread->MutexLock (gMPSystem.ProcessorData[NextNumber].StateLock);\r |
c4671a67 | 553 | gMPSystem.ProcessorData[NextNumber].State = CPU_STATE_READY;\r |
f9032449 | 554 | gThread->MutexUnlock (gMPSystem.ProcessorData[NextNumber].StateLock);\r |
c4671a67 | 555 | }\r |
556 | }\r | |
557 | \r | |
70a2c7b1 | 558 | gThread->MutexLock (ProcessorData->StateLock);\r |
c4671a67 | 559 | ProcessorData->State = CPU_STATE_IDLE;\r |
70a2c7b1 CF |
560 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
561 | \r | |
c4671a67 | 562 | break;\r |
563 | \r | |
564 | default:\r | |
565 | break;\r | |
566 | }\r | |
567 | }\r | |
568 | \r | |
569 | if (gMPSystem.FinishCount == gMPSystem.StartCount) {\r | |
8b6d0c05 | 570 | Status = EFI_SUCCESS;\r |
571 | goto Done;\r | |
c4671a67 | 572 | }\r |
573 | \r | |
ca186b1d | 574 | if ((TimeoutInMicroseconds != 0) && (Timeout == 0)) {\r |
8b6d0c05 | 575 | Status = EFI_TIMEOUT;\r |
576 | goto Done;\r | |
c4671a67 | 577 | }\r |
578 | \r | |
ca186b1d | 579 | Timeout -= CalculateAndStallInterval (Timeout);\r |
c4671a67 | 580 | }\r |
581 | \r | |
8b6d0c05 | 582 | Done:\r |
583 | if (FailedCpuList != NULL) {\r | |
584 | if (gMPSystem.FailedListIndex == 0) {\r | |
585 | FreePool (*FailedCpuList);\r | |
586 | *FailedCpuList = NULL;\r | |
587 | }\r | |
588 | }\r | |
589 | \r | |
c4671a67 | 590 | return EFI_SUCCESS;\r |
591 | }\r | |
592 | \r | |
593 | \r | |
594 | /**\r | |
d18d8a1d | 595 | This service lets the caller get one enabled AP to execute a caller-provided\r |
596 | function. The caller can request the BSP to either wait for the completion\r | |
597 | of the AP or just proceed with the next task by using the EFI event mechanism.\r | |
598 | See EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() for more details on non-blocking\r | |
c4671a67 | 599 | execution support. This service may only be called from the BSP.\r |
600 | \r | |
d18d8a1d | 601 | This function is used to dispatch one enabled AP to the function specified by\r |
602 | Procedure passing in the argument specified by ProcedureArgument. If WaitEvent\r | |
603 | is NULL, execution is in blocking mode. The BSP waits until the AP finishes or\r | |
604 | TimeoutInMicroSecondss expires. Otherwise, execution is in non-blocking mode.\r | |
605 | BSP proceeds to the next task without waiting for the AP. If a non-blocking mode\r | |
606 | is requested after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled,\r | |
c4671a67 | 607 | then EFI_UNSUPPORTED must be returned.\r |
d18d8a1d | 608 | \r |
609 | If the timeout specified by TimeoutInMicroseconds expires before the AP returns\r | |
610 | from Procedure, then execution of Procedure by the AP is terminated. The AP is\r | |
611 | available for subsequent calls to EFI_MP_SERVICES_PROTOCOL.StartupAllAPs() and\r | |
c4671a67 | 612 | EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r |
613 | \r | |
614 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL\r | |
615 | instance.\r | |
d18d8a1d | 616 | @param[in] Procedure A pointer to the function to be run on\r |
c4671a67 | 617 | enabled APs of the system. See type\r |
618 | EFI_AP_PROCEDURE.\r | |
d18d8a1d | 619 | @param[in] ProcessorNumber The handle number of the AP. The range is\r |
c4671a67 | 620 | from 0 to the total number of logical\r |
d18d8a1d | 621 | processors minus 1. The total number of\r |
c4671a67 | 622 | logical processors can be retrieved by\r |
623 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
624 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
d18d8a1d | 625 | service. If it is NULL, then execute in\r |
626 | blocking mode. BSP waits until all APs finish\r | |
627 | or TimeoutInMicroseconds expires. If it's\r | |
628 | not NULL, then execute in non-blocking mode.\r | |
629 | BSP requests the function specified by\r | |
630 | Procedure to be started on all the enabled\r | |
631 | APs, and go on executing immediately. If\r | |
c4671a67 | 632 | all return from Procedure or TimeoutInMicroseconds\r |
d18d8a1d | 633 | expires, this event is signaled. The BSP\r |
634 | can use the CheckEvent() or WaitForEvent()\r | |
635 | services to check the state of event. Type\r | |
636 | EFI_EVENT is defined in CreateEvent() in\r | |
637 | the Unified Extensible Firmware Interface\r | |
638 | Specification.\r | |
639 | @param[in] TimeoutInMicrosecsond Indicates the time limit in microseconds for\r | |
640 | APs to return from Procedure, either for\r | |
641 | blocking or non-blocking mode. Zero means\r | |
642 | infinity. If the timeout expires before\r | |
c4671a67 | 643 | all APs return from Procedure, then Procedure\r |
d18d8a1d | 644 | on the failed APs is terminated. All enabled\r |
645 | APs are available for next function assigned\r | |
646 | by EFI_MP_SERVICES_PROTOCOL.StartupAllAPs()\r | |
c4671a67 | 647 | or EFI_MP_SERVICES_PROTOCOL.StartupThisAP().\r |
d18d8a1d | 648 | If the timeout expires in blocking mode,\r |
649 | BSP returns EFI_TIMEOUT. If the timeout\r | |
650 | expires in non-blocking mode, WaitEvent\r | |
c4671a67 | 651 | is signaled with SignalEvent().\r |
d18d8a1d | 652 | @param[in] ProcedureArgument The parameter passed into Procedure for\r |
c4671a67 | 653 | all APs.\r |
d18d8a1d | 654 | @param[out] Finished If NULL, this parameter is ignored. In\r |
c4671a67 | 655 | blocking mode, this parameter is ignored.\r |
d18d8a1d | 656 | In non-blocking mode, if AP returns from\r |
c4671a67 | 657 | Procedure before the timeout expires, its\r |
d18d8a1d | 658 | content is set to TRUE. Otherwise, the\r |
c4671a67 | 659 | value is set to FALSE. The caller can\r |
d18d8a1d | 660 | determine if the AP returned from Procedure\r |
c4671a67 | 661 | by evaluating this value.\r |
662 | \r | |
d18d8a1d | 663 | @retval EFI_SUCCESS In blocking mode, specified AP finished before\r |
c4671a67 | 664 | the timeout expires.\r |
d18d8a1d | 665 | @retval EFI_SUCCESS In non-blocking mode, the function has been\r |
c4671a67 | 666 | dispatched to specified AP.\r |
d18d8a1d | 667 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r |
668 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
c4671a67 | 669 | signaled.\r |
670 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
d18d8a1d | 671 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r |
c4671a67 | 672 | the specified AP has finished.\r |
673 | @retval EFI_NOT_READY The specified AP is busy.\r | |
d18d8a1d | 674 | @retval EFI_NOT_FOUND The processor with the handle specified by\r |
c4671a67 | 675 | ProcessorNumber does not exist.\r |
676 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
677 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
678 | \r | |
679 | **/\r | |
680 | EFI_STATUS\r | |
681 | EFIAPI\r | |
682 | CpuMpServicesStartupThisAP (\r | |
683 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
684 | IN EFI_AP_PROCEDURE Procedure,\r | |
685 | IN UINTN ProcessorNumber,\r | |
686 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
687 | IN UINTN TimeoutInMicroseconds,\r | |
688 | IN VOID *ProcedureArgument OPTIONAL,\r | |
689 | OUT BOOLEAN *Finished OPTIONAL\r | |
690 | )\r | |
691 | {\r | |
ca186b1d | 692 | UINTN Timeout;\r |
d18d8a1d | 693 | \r |
c4671a67 | 694 | if (!IsBSP ()) {\r |
695 | return EFI_DEVICE_ERROR;\r | |
696 | }\r | |
d18d8a1d | 697 | \r |
c4671a67 | 698 | if (Procedure == NULL) {\r |
699 | return EFI_INVALID_PARAMETER;\r | |
700 | }\r | |
d18d8a1d | 701 | \r |
c4671a67 | 702 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r |
703 | return EFI_NOT_FOUND;\r | |
704 | }\r | |
d18d8a1d | 705 | \r |
c4671a67 | 706 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r |
707 | return EFI_INVALID_PARAMETER;\r | |
708 | }\r | |
709 | \r | |
8864869a CF |
710 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
711 | return EFI_INVALID_PARAMETER;\r | |
712 | }\r | |
713 | \r | |
a31a3b4a | 714 | gThread->MutexLock(gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 715 | if (gMPSystem.ProcessorData[ProcessorNumber].State != CPU_STATE_IDLE) {\r |
a31a3b4a | 716 | gThread->MutexUnlock(gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 717 | return EFI_NOT_READY;\r |
718 | }\r | |
a31a3b4a | 719 | gThread->MutexUnlock(gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 720 | \r |
721 | if ((WaitEvent != NULL) && gReadToBoot) {\r | |
722 | return EFI_UNSUPPORTED;\r | |
723 | }\r | |
724 | \r | |
725 | Timeout = TimeoutInMicroseconds;\r | |
726 | \r | |
727 | gMPSystem.StartCount = 1;\r | |
728 | gMPSystem.FinishCount = 0;\r | |
729 | \r | |
730 | SetApProcedure (&gMPSystem.ProcessorData[ProcessorNumber], Procedure, ProcedureArgument);\r | |
731 | \r | |
8b6d0c05 | 732 | if (WaitEvent != NULL) {\r |
d75d0409 | 733 | // Non Blocking\r |
734 | gMPSystem.WaitEvent = WaitEvent;\r | |
735 | gBS->SetTimer (\r | |
736 | gMPSystem.ProcessorData[ProcessorNumber].CheckThisAPEvent,\r | |
737 | TimerPeriodic,\r | |
738 | gPollInterval\r | |
739 | );\r | |
8b6d0c05 | 740 | return EFI_SUCCESS;\r |
741 | }\r | |
742 | \r | |
743 | // Blocking\r | |
c4671a67 | 744 | while (TRUE) {\r |
f9032449 | 745 | gThread->MutexLock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 746 | if (gMPSystem.ProcessorData[ProcessorNumber].State == CPU_STATE_FINISHED) {\r |
747 | gMPSystem.ProcessorData[ProcessorNumber].State = CPU_STATE_IDLE;\r | |
f9032449 | 748 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 749 | break;\r |
750 | }\r | |
751 | \r | |
f9032449 | 752 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 753 | \r |
ca186b1d | 754 | if ((TimeoutInMicroseconds != 0) && (Timeout == 0)) {\r |
c4671a67 | 755 | return EFI_TIMEOUT;\r |
756 | }\r | |
757 | \r | |
ca186b1d | 758 | Timeout -= CalculateAndStallInterval (Timeout);\r |
c4671a67 | 759 | }\r |
760 | \r | |
761 | return EFI_SUCCESS;\r | |
762 | \r | |
763 | }\r | |
764 | \r | |
765 | \r | |
766 | /**\r | |
d18d8a1d | 767 | This service switches the requested AP to be the BSP from that point onward.\r |
768 | This service changes the BSP for all purposes. This call can only be performed\r | |
c4671a67 | 769 | by the current BSP.\r |
770 | \r | |
d18d8a1d | 771 | This service switches the requested AP to be the BSP from that point onward.\r |
772 | This service changes the BSP for all purposes. The new BSP can take over the\r | |
773 | execution of the old BSP and continue seamlessly from where the old one left\r | |
774 | off. This service may not be supported after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT\r | |
c4671a67 | 775 | is signaled.\r |
776 | \r | |
d18d8a1d | 777 | If the BSP cannot be switched prior to the return from this service, then\r |
c4671a67 | 778 | EFI_UNSUPPORTED must be returned.\r |
779 | \r | |
780 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
d18d8a1d | 781 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r |
782 | BSP. The range is from 0 to the total number of\r | |
783 | logical processors minus 1. The total number of\r | |
c4671a67 | 784 | logical processors can be retrieved by\r |
785 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
d18d8a1d | 786 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r |
c4671a67 | 787 | enabled AP. Otherwise, it will be disabled.\r |
788 | \r | |
789 | @retval EFI_SUCCESS BSP successfully switched.\r | |
d18d8a1d | 790 | @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to\r |
c4671a67 | 791 | this service returning.\r |
792 | @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r | |
793 | @retval EFI_SUCCESS The calling processor is an AP.\r | |
794 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
795 | ProcessorNumber does not exist.\r | |
d18d8a1d | 796 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or\r |
c4671a67 | 797 | a disabled AP.\r |
798 | @retval EFI_NOT_READY The specified AP is busy.\r | |
799 | \r | |
800 | **/\r | |
801 | EFI_STATUS\r | |
802 | EFIAPI\r | |
803 | CpuMpServicesSwitchBSP (\r | |
804 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
805 | IN UINTN ProcessorNumber,\r | |
806 | IN BOOLEAN EnableOldBSP\r | |
807 | )\r | |
808 | {\r | |
809 | UINTN Index;\r | |
d18d8a1d | 810 | \r |
c4671a67 | 811 | if (!IsBSP ()) {\r |
812 | return EFI_DEVICE_ERROR;\r | |
813 | }\r | |
d18d8a1d | 814 | \r |
c4671a67 | 815 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r |
816 | return EFI_NOT_FOUND;\r | |
817 | }\r | |
d18d8a1d | 818 | \r |
c4671a67 | 819 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
820 | return EFI_INVALID_PARAMETER;\r | |
821 | }\r | |
822 | \r | |
823 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
824 | return EFI_INVALID_PARAMETER;\r | |
825 | }\r | |
d18d8a1d | 826 | \r |
c4671a67 | 827 | for (Index = 0; Index < gMPSystem.NumberOfProcessors; Index++) {\r |
828 | if ((gMPSystem.ProcessorData[Index].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r | |
829 | break;\r | |
830 | }\r | |
831 | }\r | |
832 | ASSERT (Index != gMPSystem.NumberOfProcessors);\r | |
d18d8a1d | 833 | \r |
a31a3b4a | 834 | gThread->MutexLock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 835 | if (gMPSystem.ProcessorData[ProcessorNumber].State != CPU_STATE_IDLE) {\r |
a31a3b4a | 836 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 837 | return EFI_NOT_READY;\r |
838 | }\r | |
a31a3b4a | 839 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
d18d8a1d | 840 | \r |
c4671a67 | 841 | // Skip for now as we need switch a bunch of stack stuff around and it's complex\r |
842 | // May not be worth it?\r | |
843 | return EFI_NOT_READY;\r | |
844 | }\r | |
845 | \r | |
846 | \r | |
847 | /**\r | |
d18d8a1d | 848 | This service lets the caller enable or disable an AP from this point onward.\r |
c4671a67 | 849 | This service may only be called from the BSP.\r |
850 | \r | |
d18d8a1d | 851 | This service allows the caller enable or disable an AP from this point onward.\r |
852 | The caller can optionally specify the health status of the AP by Health. If\r | |
853 | an AP is being disabled, then the state of the disabled AP is implementation\r | |
854 | dependent. If an AP is enabled, then the implementation must guarantee that a\r | |
855 | complete initialization sequence is performed on the AP, so the AP is in a state\r | |
856 | that is compatible with an MP operating system. This service may not be supported\r | |
c4671a67 | 857 | after the UEFI Event EFI_EVENT_GROUP_READY_TO_BOOT is signaled.\r |
858 | \r | |
d18d8a1d | 859 | If the enable or disable AP operation cannot be completed prior to the return\r |
c4671a67 | 860 | from this service, then EFI_UNSUPPORTED must be returned.\r |
861 | \r | |
862 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
d18d8a1d | 863 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r |
864 | BSP. The range is from 0 to the total number of\r | |
865 | logical processors minus 1. The total number of\r | |
c4671a67 | 866 | logical processors can be retrieved by\r |
867 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
d18d8a1d | 868 | @param[in] EnableAP Specifies the new state for the processor for\r |
c4671a67 | 869 | enabled, FALSE for disabled.\r |
d18d8a1d | 870 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies\r |
871 | the new health status of the AP. This flag\r | |
872 | corresponds to StatusFlag defined in\r | |
873 | EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only\r | |
874 | the PROCESSOR_HEALTH_STATUS_BIT is used. All other\r | |
875 | bits are ignored. If it is NULL, this parameter\r | |
c4671a67 | 876 | is ignored.\r |
877 | \r | |
878 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
d18d8a1d | 879 | @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed\r |
c4671a67 | 880 | prior to this service returning.\r |
881 | @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.\r | |
882 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
883 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber\r | |
884 | does not exist.\r | |
885 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.\r | |
886 | \r | |
887 | **/\r | |
888 | EFI_STATUS\r | |
889 | EFIAPI\r | |
890 | CpuMpServicesEnableDisableAP (\r | |
891 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
892 | IN UINTN ProcessorNumber,\r | |
893 | IN BOOLEAN EnableAP,\r | |
894 | IN UINT32 *HealthFlag OPTIONAL\r | |
895 | )\r | |
896 | {\r | |
897 | if (!IsBSP ()) {\r | |
898 | return EFI_DEVICE_ERROR;\r | |
899 | }\r | |
d18d8a1d | 900 | \r |
c4671a67 | 901 | if (ProcessorNumber >= gMPSystem.NumberOfProcessors) {\r |
902 | return EFI_NOT_FOUND;\r | |
903 | }\r | |
d18d8a1d | 904 | \r |
c4671a67 | 905 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) != 0) {\r |
906 | return EFI_INVALID_PARAMETER;\r | |
d18d8a1d | 907 | }\r |
c4671a67 | 908 | \r |
a31a3b4a | 909 | gThread->MutexLock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 910 | if (gMPSystem.ProcessorData[ProcessorNumber].State != CPU_STATE_IDLE) {\r |
a31a3b4a | 911 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 912 | return EFI_UNSUPPORTED;\r |
913 | }\r | |
a31a3b4a | 914 | gThread->MutexUnlock (gMPSystem.ProcessorData[ProcessorNumber].StateLock);\r |
c4671a67 | 915 | \r |
c4671a67 | 916 | if (EnableAP) {\r |
917 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0 ) {\r | |
918 | gMPSystem.NumberOfEnabledProcessors++;\r | |
919 | }\r | |
920 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag |= PROCESSOR_ENABLED_BIT;\r | |
921 | } else {\r | |
922 | if ((gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag & PROCESSOR_ENABLED_BIT) == PROCESSOR_ENABLED_BIT ) {\r | |
923 | gMPSystem.NumberOfEnabledProcessors--;\r | |
924 | }\r | |
925 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag &= ~PROCESSOR_ENABLED_BIT;\r | |
926 | }\r | |
d18d8a1d | 927 | \r |
c4671a67 | 928 | if (HealthFlag != NULL) {\r |
929 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag &= ~PROCESSOR_HEALTH_STATUS_BIT;\r | |
930 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag |= (*HealthFlag & PROCESSOR_HEALTH_STATUS_BIT);\r | |
931 | }\r | |
d18d8a1d | 932 | \r |
c4671a67 | 933 | return EFI_SUCCESS;\r |
934 | }\r | |
935 | \r | |
936 | \r | |
937 | /**\r | |
d18d8a1d | 938 | This return the handle number for the calling processor. This service may be\r |
c4671a67 | 939 | called from the BSP and APs.\r |
940 | \r | |
d18d8a1d | 941 | This service returns the processor handle number for the calling processor.\r |
942 | The returned value is in the range from 0 to the total number of logical\r | |
943 | processors minus 1. The total number of logical processors can be retrieved\r | |
944 | with EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors(). This service may be\r | |
945 | called from the BSP and APs. If ProcessorNumber is NULL, then EFI_INVALID_PARAMETER\r | |
946 | is returned. Otherwise, the current processors handle number is returned in\r | |
c4671a67 | 947 | ProcessorNumber, and EFI_SUCCESS is returned.\r |
948 | \r | |
949 | @param[in] This A pointer to the EFI_MP_SERVICES_PROTOCOL instance.\r | |
d18d8a1d | 950 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r |
951 | BSP. The range is from 0 to the total number of\r | |
952 | logical processors minus 1. The total number of\r | |
c4671a67 | 953 | logical processors can be retrieved by\r |
954 | EFI_MP_SERVICES_PROTOCOL.GetNumberOfProcessors().\r | |
955 | \r | |
d18d8a1d | 956 | @retval EFI_SUCCESS The current processor handle number was returned\r |
c4671a67 | 957 | in ProcessorNumber.\r |
958 | @retval EFI_INVALID_PARAMETER ProcessorNumber is NULL.\r | |
959 | \r | |
960 | **/\r | |
961 | EFI_STATUS\r | |
962 | EFIAPI\r | |
963 | CpuMpServicesWhoAmI (\r | |
964 | IN EFI_MP_SERVICES_PROTOCOL *This,\r | |
965 | OUT UINTN *ProcessorNumber\r | |
966 | )\r | |
967 | {\r | |
968 | UINTN Index;\r | |
969 | UINT64 ProcessorId;\r | |
d18d8a1d | 970 | \r |
c4671a67 | 971 | if (ProcessorNumber == NULL) {\r |
972 | return EFI_INVALID_PARAMETER;\r | |
973 | }\r | |
d18d8a1d | 974 | \r |
10d1be3e | 975 | ProcessorId = gThread->Self ();\r |
c4671a67 | 976 | for (Index = 0; Index < gMPSystem.NumberOfProcessors; Index++) {\r |
977 | if (gMPSystem.ProcessorData[Index].Info.ProcessorId == ProcessorId) {\r | |
978 | break;\r | |
979 | }\r | |
980 | }\r | |
981 | \r | |
982 | *ProcessorNumber = Index;\r | |
983 | return EFI_SUCCESS;\r | |
984 | }\r | |
985 | \r | |
986 | \r | |
987 | \r | |
d070eef8 | 988 | EFI_MP_SERVICES_PROTOCOL mMpServicesTemplate = {\r |
c4671a67 | 989 | CpuMpServicesGetNumberOfProcessors,\r |
990 | CpuMpServicesGetProcessorInfo,\r | |
991 | CpuMpServicesStartupAllAps,\r | |
992 | CpuMpServicesStartupThisAP,\r | |
993 | CpuMpServicesSwitchBSP,\r | |
994 | CpuMpServicesEnableDisableAP,\r | |
995 | CpuMpServicesWhoAmI\r | |
996 | };\r | |
997 | \r | |
998 | \r | |
999 | \r | |
1000 | /*++\r | |
1001 | If timeout occurs in StartupAllAps(), a timer is set, which invokes this\r | |
1002 | procedure periodically to check whether all APs have finished.\r | |
1003 | \r | |
1004 | \r | |
1005 | --*/\r | |
1006 | VOID\r | |
1007 | EFIAPI\r | |
1008 | CpuCheckAllAPsStatus (\r | |
1009 | IN EFI_EVENT Event,\r | |
1010 | IN VOID *Context\r | |
1011 | )\r | |
1012 | {\r | |
1013 | UINTN ProcessorNumber;\r | |
1014 | UINTN NextNumber;\r | |
1015 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
1016 | PROCESSOR_DATA_BLOCK *NextData;\r | |
1017 | EFI_STATUS Status;\r | |
1018 | PROCESSOR_STATE ProcessorState;\r | |
8b6d0c05 | 1019 | UINTN Cpu;\r |
1020 | BOOLEAN Found;\r | |
c4671a67 | 1021 | \r |
8b6d0c05 | 1022 | if (gMPSystem.TimeoutActive) {\r |
ca186b1d | 1023 | gMPSystem.Timeout -= CalculateAndStallInterval (gMPSystem.Timeout);\r |
8b6d0c05 | 1024 | }\r |
d18d8a1d | 1025 | \r |
c4671a67 | 1026 | for (ProcessorNumber = 0; ProcessorNumber < gMPSystem.NumberOfProcessors; ProcessorNumber++) {\r |
8ab6d73c CF |
1027 | ProcessorData = &gMPSystem.ProcessorData[ProcessorNumber];\r |
1028 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
c4671a67 | 1029 | // Skip BSP\r |
1030 | continue;\r | |
1031 | }\r | |
1032 | \r | |
8b6d0c05 | 1033 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
1034 | // Skip Disabled processors\r | |
1035 | continue;\r | |
1036 | }\r | |
1037 | \r | |
c4671a67 | 1038 | // This is an Interrupt Service routine.\r |
1039 | // This can grab a lock that is held in a non-interrupt\r | |
1040 | // context. Meaning deadlock. Which is a bad thing.\r | |
1041 | // So, try lock it. If we can get it, cool, do our thing.\r | |
1042 | // otherwise, just dump out & try again on the next iteration.\r | |
1a160a74 | 1043 | Status = gThread->MutexTryLock (ProcessorData->StateLock);\r |
c4671a67 | 1044 | if (EFI_ERROR(Status)) {\r |
1045 | return;\r | |
1046 | }\r | |
1a160a74 CF |
1047 | ProcessorState = ProcessorData->State;\r |
1048 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
c4671a67 | 1049 | \r |
1050 | switch (ProcessorState) {\r | |
c4671a67 | 1051 | case CPU_STATE_FINISHED:\r |
1052 | if (gMPSystem.SingleThread) {\r | |
1053 | Status = GetNextBlockedNumber (&NextNumber);\r | |
1054 | if (!EFI_ERROR (Status)) {\r | |
1055 | NextData = &gMPSystem.ProcessorData[NextNumber];\r | |
1056 | \r | |
f9032449 | 1057 | gThread->MutexLock (NextData->StateLock);\r |
c4671a67 | 1058 | NextData->State = CPU_STATE_READY;\r |
f9032449 | 1059 | gThread->MutexUnlock (NextData->StateLock);\r |
c4671a67 | 1060 | \r |
1061 | SetApProcedure (NextData, gMPSystem.Procedure, gMPSystem.ProcedureArgument);\r | |
1062 | }\r | |
1063 | }\r | |
1064 | \r | |
1a160a74 CF |
1065 | gThread->MutexLock (ProcessorData->StateLock);\r |
1066 | ProcessorData->State = CPU_STATE_IDLE;\r | |
1067 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
c4671a67 | 1068 | gMPSystem.FinishCount++;\r |
1069 | break;\r | |
1070 | \r | |
1071 | default:\r | |
1072 | break;\r | |
1073 | }\r | |
1074 | }\r | |
d18d8a1d | 1075 | \r |
ca186b1d | 1076 | if (gMPSystem.TimeoutActive && gMPSystem.Timeout == 0) {\r |
8b6d0c05 | 1077 | //\r |
1078 | // Timeout\r | |
1079 | //\r | |
1080 | if (gMPSystem.FailedList != NULL) {\r | |
1081 | for (ProcessorNumber = 0; ProcessorNumber < gMPSystem.NumberOfProcessors; ProcessorNumber++) {\r | |
8ab6d73c CF |
1082 | ProcessorData = &gMPSystem.ProcessorData[ProcessorNumber];\r |
1083 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
8b6d0c05 | 1084 | // Skip BSP\r |
1085 | continue;\r | |
1086 | }\r | |
c4671a67 | 1087 | \r |
8b6d0c05 | 1088 | if ((ProcessorData->Info.StatusFlag & PROCESSOR_ENABLED_BIT) == 0) {\r |
1089 | // Skip Disabled processors\r | |
1090 | continue;\r | |
1091 | }\r | |
d18d8a1d | 1092 | \r |
1093 | // Mark the\r | |
1a160a74 | 1094 | Status = gThread->MutexTryLock (ProcessorData->StateLock);\r |
8b6d0c05 | 1095 | if (EFI_ERROR(Status)) {\r |
1096 | return;\r | |
1097 | }\r | |
1a160a74 CF |
1098 | ProcessorState = ProcessorData->State;\r |
1099 | gThread->MutexUnlock (ProcessorData->StateLock);\r | |
d18d8a1d | 1100 | \r |
8b6d0c05 | 1101 | if (ProcessorState != CPU_STATE_IDLE) {\r |
1102 | // If we are retrying make sure we don't double count\r | |
1103 | for (Cpu = 0, Found = FALSE; Cpu < gMPSystem.NumberOfProcessors; Cpu++) {\r | |
1104 | if (gMPSystem.FailedList[Cpu] == END_OF_CPU_LIST) {\r | |
1105 | break;\r | |
1106 | }\r | |
1107 | if (gMPSystem.FailedList[ProcessorNumber] == Cpu) {\r | |
1108 | Found = TRUE;\r | |
1109 | break;\r | |
1110 | }\r | |
1111 | }\r | |
1112 | if (!Found) {\r | |
1113 | gMPSystem.FailedList[gMPSystem.FailedListIndex++] = Cpu;\r | |
1114 | }\r | |
1115 | }\r | |
1116 | }\r | |
1117 | }\r | |
1118 | // Force terminal exit\r | |
1119 | gMPSystem.FinishCount = gMPSystem.StartCount;\r | |
1120 | }\r | |
1121 | \r | |
1122 | if (gMPSystem.FinishCount != gMPSystem.StartCount) {\r | |
1123 | return;\r | |
c4671a67 | 1124 | }\r |
d18d8a1d | 1125 | \r |
8b6d0c05 | 1126 | gBS->SetTimer (\r |
1127 | gMPSystem.CheckAllAPsEvent,\r | |
1128 | TimerCancel,\r | |
1129 | 0\r | |
1130 | );\r | |
1131 | \r | |
1132 | if (gMPSystem.FailedListIndex == 0) {\r | |
1133 | if (gMPSystem.FailedList != NULL) {\r | |
1134 | FreePool (gMPSystem.FailedList);\r | |
1135 | gMPSystem.FailedList = NULL;\r | |
1136 | }\r | |
1137 | }\r | |
1138 | \r | |
1139 | Status = gBS->SignalEvent (gMPSystem.WaitEvent);\r | |
c4671a67 | 1140 | \r |
1141 | return ;\r | |
1142 | }\r | |
1143 | \r | |
1144 | VOID\r | |
1145 | EFIAPI\r | |
1146 | CpuCheckThisAPStatus (\r | |
1147 | IN EFI_EVENT Event,\r | |
1148 | IN VOID *Context\r | |
1149 | )\r | |
1150 | {\r | |
1151 | EFI_STATUS Status;\r | |
1152 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
1153 | PROCESSOR_STATE ProcessorState;\r | |
1154 | \r | |
1155 | ProcessorData = (PROCESSOR_DATA_BLOCK *) Context;\r | |
1156 | \r | |
1157 | //\r | |
8b6d0c05 | 1158 | // This is an Interrupt Service routine.\r |
1159 | // that can grab a lock that is held in a non-interrupt\r | |
c4671a67 | 1160 | // context. Meaning deadlock. Which is a badddd thing.\r |
1161 | // So, try lock it. If we can get it, cool, do our thing.\r | |
1162 | // otherwise, just dump out & try again on the next iteration.\r | |
1163 | //\r | |
10d1be3e | 1164 | Status = gThread->MutexTryLock (ProcessorData->StateLock);\r |
c4671a67 | 1165 | if (EFI_ERROR(Status)) {\r |
1166 | return;\r | |
1167 | }\r | |
1168 | ProcessorState = ProcessorData->State;\r | |
10d1be3e | 1169 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
c4671a67 | 1170 | \r |
1171 | if (ProcessorState == CPU_STATE_FINISHED) {\r | |
1172 | Status = gBS->SetTimer (ProcessorData->CheckThisAPEvent, TimerCancel, 0);\r | |
1173 | ASSERT_EFI_ERROR (Status);\r | |
d18d8a1d | 1174 | \r |
c4671a67 | 1175 | Status = gBS->SignalEvent (gMPSystem.WaitEvent);\r |
1176 | ASSERT_EFI_ERROR (Status);\r | |
d18d8a1d | 1177 | \r |
10d1be3e | 1178 | gThread->MutexLock (ProcessorData->StateLock);\r |
c4671a67 | 1179 | ProcessorData->State = CPU_STATE_IDLE;\r |
10d1be3e | 1180 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
c4671a67 | 1181 | }\r |
1182 | \r | |
1183 | return ;\r | |
1184 | }\r | |
1185 | \r | |
1186 | \r | |
1187 | /*++\r | |
1188 | This function is called by all processors (both BSP and AP) once and collects MP related data\r | |
1189 | \r | |
1190 | MPSystemData - Pointer to the data structure containing MP related data\r | |
1191 | BSP - TRUE if the CPU is BSP\r | |
1192 | \r | |
1193 | EFI_SUCCESS - Data for the processor collected and filled in\r | |
1194 | \r | |
1195 | --*/\r | |
1196 | EFI_STATUS\r | |
1197 | FillInProcessorInformation (\r | |
1198 | IN BOOLEAN BSP,\r | |
1199 | IN UINTN ProcessorNumber\r | |
1200 | )\r | |
1201 | {\r | |
10d1be3e | 1202 | gMPSystem.ProcessorData[ProcessorNumber].Info.ProcessorId = gThread->Self ();\r |
c4671a67 | 1203 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag = PROCESSOR_ENABLED_BIT | PROCESSOR_HEALTH_STATUS_BIT;\r |
1204 | if (BSP) {\r | |
1205 | gMPSystem.ProcessorData[ProcessorNumber].Info.StatusFlag |= PROCESSOR_AS_BSP_BIT;\r | |
1206 | }\r | |
d18d8a1d | 1207 | \r |
e148512e | 1208 | gMPSystem.ProcessorData[ProcessorNumber].Info.Location.Package = (UINT32) ProcessorNumber;\r |
c4671a67 | 1209 | gMPSystem.ProcessorData[ProcessorNumber].Info.Location.Core = 0;\r |
1210 | gMPSystem.ProcessorData[ProcessorNumber].Info.Location.Thread = 0;\r | |
1211 | gMPSystem.ProcessorData[ProcessorNumber].State = BSP ? CPU_STATE_BUSY : CPU_STATE_IDLE;\r | |
d18d8a1d | 1212 | \r |
c4671a67 | 1213 | gMPSystem.ProcessorData[ProcessorNumber].Procedure = NULL;\r |
1214 | gMPSystem.ProcessorData[ProcessorNumber].Parameter = NULL;\r | |
10d1be3e | 1215 | gMPSystem.ProcessorData[ProcessorNumber].StateLock = gThread->MutexInit ();\r |
1216 | gMPSystem.ProcessorData[ProcessorNumber].ProcedureLock = gThread->MutexInit ();\r | |
c4671a67 | 1217 | \r |
1218 | return EFI_SUCCESS;\r | |
1219 | }\r | |
1220 | \r | |
1221 | VOID *\r | |
1222 | EFIAPI\r | |
1223 | CpuDriverApIdolLoop (\r | |
1224 | VOID *Context\r | |
1225 | )\r | |
1226 | {\r | |
1227 | EFI_AP_PROCEDURE Procedure;\r | |
1228 | VOID *Parameter;\r | |
1229 | UINTN ProcessorNumber;\r | |
1230 | PROCESSOR_DATA_BLOCK *ProcessorData;\r | |
d18d8a1d | 1231 | \r |
c4671a67 | 1232 | ProcessorNumber = (UINTN)Context;\r |
1233 | ProcessorData = &gMPSystem.ProcessorData[ProcessorNumber];\r | |
d18d8a1d | 1234 | \r |
10d1be3e | 1235 | ProcessorData->Info.ProcessorId = gThread->Self ();\r |
d18d8a1d | 1236 | \r |
c4671a67 | 1237 | while (TRUE) {\r |
1238 | //\r | |
1239 | // Make a local copy on the stack to be extra safe\r | |
1240 | //\r | |
10d1be3e | 1241 | gThread->MutexLock (ProcessorData->ProcedureLock);\r |
c4671a67 | 1242 | Procedure = ProcessorData->Procedure;\r |
1243 | Parameter = ProcessorData->Parameter;\r | |
10d1be3e | 1244 | gThread->MutexUnlock (ProcessorData->ProcedureLock);\r |
d18d8a1d | 1245 | \r |
c4671a67 | 1246 | if (Procedure != NULL) {\r |
10d1be3e | 1247 | gThread->MutexLock (ProcessorData->StateLock);\r |
c4671a67 | 1248 | ProcessorData->State = CPU_STATE_BUSY;\r |
10d1be3e | 1249 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
d18d8a1d | 1250 | \r |
c4671a67 | 1251 | Procedure (Parameter);\r |
d18d8a1d | 1252 | \r |
10d1be3e | 1253 | gThread->MutexLock (ProcessorData->ProcedureLock);\r |
c4671a67 | 1254 | ProcessorData->Procedure = NULL;\r |
10d1be3e | 1255 | gThread->MutexUnlock (ProcessorData->ProcedureLock);\r |
d18d8a1d | 1256 | \r |
10d1be3e | 1257 | gThread->MutexLock (ProcessorData->StateLock);\r |
c4671a67 | 1258 | ProcessorData->State = CPU_STATE_FINISHED;\r |
d18d8a1d | 1259 | gThread->MutexUnlock (ProcessorData->StateLock);\r |
c4671a67 | 1260 | }\r |
d18d8a1d | 1261 | \r |
c4671a67 | 1262 | // Poll 5 times a seconds, 200ms\r |
1263 | // Don't want to burn too many system resources doing nothing.\r | |
1ef41207 | 1264 | gEmuThunk->Sleep (200 * 1000);\r |
c4671a67 | 1265 | }\r |
d18d8a1d | 1266 | \r |
c4671a67 | 1267 | return 0;\r |
1268 | }\r | |
1269 | \r | |
1270 | \r | |
1271 | EFI_STATUS\r | |
1272 | InitializeMpSystemData (\r | |
1273 | IN UINTN NumberOfProcessors\r | |
1274 | )\r | |
1275 | {\r | |
1276 | EFI_STATUS Status;\r | |
1277 | UINTN Index;\r | |
1278 | \r | |
d18d8a1d | 1279 | \r |
c4671a67 | 1280 | //\r |
1281 | // Clear the data structure area first.\r | |
1282 | //\r | |
1283 | ZeroMem (&gMPSystem, sizeof (MP_SYSTEM_DATA));\r | |
1284 | \r | |
1285 | //\r | |
1286 | // First BSP fills and inits all known values, including it's own records.\r | |
1287 | //\r | |
1288 | gMPSystem.NumberOfProcessors = NumberOfProcessors;\r | |
1289 | gMPSystem.NumberOfEnabledProcessors = NumberOfProcessors;\r | |
d18d8a1d | 1290 | \r |
c4671a67 | 1291 | gMPSystem.ProcessorData = AllocateZeroPool (gMPSystem.NumberOfProcessors * sizeof (PROCESSOR_DATA_BLOCK));\r |
1292 | ASSERT (gMPSystem.ProcessorData != NULL);\r | |
1293 | \r | |
1294 | FillInProcessorInformation (TRUE, 0);\r | |
d18d8a1d | 1295 | \r |
c4671a67 | 1296 | Status = gBS->CreateEvent (\r |
1297 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
1298 | TPL_CALLBACK,\r | |
1299 | CpuCheckAllAPsStatus,\r | |
1300 | NULL,\r | |
1301 | &gMPSystem.CheckAllAPsEvent\r | |
1302 | );\r | |
1303 | ASSERT_EFI_ERROR (Status);\r | |
d18d8a1d | 1304 | \r |
c4671a67 | 1305 | \r |
1306 | for (Index = 0; Index < gMPSystem.NumberOfProcessors; Index++) {\r | |
1307 | if ((gMPSystem.ProcessorData[Index].Info.StatusFlag & PROCESSOR_AS_BSP_BIT) == PROCESSOR_AS_BSP_BIT) {\r | |
1308 | // Skip BSP\r | |
1309 | continue;\r | |
1310 | }\r | |
d18d8a1d | 1311 | \r |
c4671a67 | 1312 | FillInProcessorInformation (FALSE, Index);\r |
d18d8a1d | 1313 | \r |
10d1be3e | 1314 | Status = gThread->CreateThread (\r |
d18d8a1d | 1315 | (VOID *)&gMPSystem.ProcessorData[Index].Info.ProcessorId,\r |
c4671a67 | 1316 | NULL,\r |
1317 | CpuDriverApIdolLoop,\r | |
1318 | (VOID *)Index\r | |
1319 | );\r | |
d18d8a1d | 1320 | \r |
1321 | \r | |
c4671a67 | 1322 | Status = gBS->CreateEvent (\r |
1323 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
1324 | TPL_CALLBACK,\r | |
1325 | CpuCheckThisAPStatus,\r | |
1326 | (VOID *) &gMPSystem.ProcessorData[Index],\r | |
1327 | &gMPSystem.ProcessorData[Index].CheckThisAPEvent\r | |
1328 | );\r | |
1329 | }\r | |
1330 | \r | |
1331 | return EFI_SUCCESS;\r | |
1332 | }\r | |
1333 | \r | |
1334 | \r | |
1335 | \r | |
1336 | /**\r | |
1337 | Invoke a notification event\r | |
1338 | \r | |
1339 | @param Event Event whose notification function is being invoked.\r | |
1340 | @param Context The pointer to the notification function's context,\r | |
1341 | which is implementation-dependent.\r | |
1342 | \r | |
1343 | **/\r | |
1344 | VOID\r | |
1345 | EFIAPI\r | |
1346 | CpuReadToBootFunction (\r | |
1347 | IN EFI_EVENT Event,\r | |
1348 | IN VOID *Context\r | |
1349 | )\r | |
1350 | {\r | |
1351 | gReadToBoot = TRUE;\r | |
1352 | }\r | |
1353 | \r | |
1354 | \r | |
1355 | \r | |
1356 | EFI_STATUS\r | |
1357 | CpuMpServicesInit (\r | |
a0af6b27 | 1358 | OUT UINTN *MaxCpus\r |
c4671a67 | 1359 | )\r |
1360 | {\r | |
1361 | EFI_STATUS Status;\r | |
1362 | EFI_HANDLE Handle;\r | |
1363 | EMU_IO_THUNK_PROTOCOL *IoThunk;\r | |
d18d8a1d | 1364 | \r |
a0af6b27 | 1365 | *MaxCpus = 1; // BSP\r |
10d1be3e | 1366 | IoThunk = GetIoThunkInstance (&gEmuThreadThunkProtocolGuid, 0);\r |
c4671a67 | 1367 | if (IoThunk != NULL) {\r |
1368 | Status = IoThunk->Open (IoThunk);\r | |
1369 | if (!EFI_ERROR (Status)) {\r | |
1370 | if (IoThunk->ConfigString != NULL) {\r | |
a0af6b27 | 1371 | *MaxCpus += StrDecimalToUintn (IoThunk->ConfigString);\r |
10d1be3e | 1372 | gThread = IoThunk->Interface;\r |
c4671a67 | 1373 | }\r |
1374 | }\r | |
1375 | }\r | |
1376 | \r | |
a0af6b27 | 1377 | if (*MaxCpus == 1) {\r |
c4671a67 | 1378 | // We are not MP so nothing to do\r |
1379 | return EFI_SUCCESS;\r | |
1380 | }\r | |
1381 | \r | |
e148512e | 1382 | gPollInterval = (UINTN) PcdGet64 (PcdEmuMpServicesPollingInterval);\r |
c4671a67 | 1383 | \r |
a0af6b27 | 1384 | Status = InitializeMpSystemData (*MaxCpus);\r |
c4671a67 | 1385 | if (EFI_ERROR (Status)) {\r |
1386 | return Status;\r | |
1387 | }\r | |
1388 | \r | |
1389 | Status = EfiCreateEventReadyToBootEx (TPL_CALLBACK, CpuReadToBootFunction, NULL, &gReadToBootEvent);\r | |
1390 | ASSERT_EFI_ERROR (Status);\r | |
1391 | \r | |
1392 | //\r | |
1393 | // Now install the MP services protocol.\r | |
1394 | //\r | |
1395 | Handle = NULL;\r | |
1396 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1397 | &Handle,\r | |
d070eef8 | 1398 | &gEfiMpServiceProtocolGuid, &mMpServicesTemplate,\r |
c4671a67 | 1399 | NULL\r |
1400 | );\r | |
1401 | return Status;\r | |
1402 | }\r | |
1403 | \r | |
1404 | \r |