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3e8ad6bd JF |
1 | /** @file\r |
2 | MP initialize support functions for DXE phase.\r | |
3 | \r | |
7367cc6c | 4 | Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>\r |
3e8ad6bd JF |
5 | This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "MpLib.h"\r | |
96378861 JF |
16 | \r |
17 | #include <Library/UefiLib.h>\r | |
18 | #include <Library/UefiBootServicesTableLib.h>\r | |
43c9fdcc | 19 | #include <Library/DebugAgentLib.h>\r |
15720a6c | 20 | #include <Library/DxeServicesTableLib.h>\r |
96378861 | 21 | \r |
b6e45716 JF |
22 | #include <Protocol/Timer.h>\r |
23 | \r | |
96378861 | 24 | #define AP_CHECK_INTERVAL (EFI_TIMER_PERIOD_MILLISECONDS (100))\r |
bf2786dc | 25 | #define AP_SAFE_STACK_SIZE 128\r |
96378861 | 26 | \r |
93ca4c0f | 27 | CPU_MP_DATA *mCpuMpData = NULL;\r |
96378861 | 28 | EFI_EVENT mCheckAllApsEvent = NULL;\r |
4d3314f6 | 29 | EFI_EVENT mMpInitExitBootServicesEvent = NULL;\r |
8677a56a | 30 | EFI_EVENT mLegacyBootEvent = NULL;\r |
96378861 | 31 | volatile BOOLEAN mStopCheckAllApsStatus = TRUE;\r |
5183fb37 | 32 | VOID *mReservedApLoopFunc = NULL;\r |
bf2786dc | 33 | UINTN mReservedTopOfApStack;\r |
9f91cb01 | 34 | volatile UINT32 mNumberToFinish = 0;\r |
93ca4c0f | 35 | \r |
43c9fdcc JF |
36 | /**\r |
37 | Enable Debug Agent to support source debugging on AP function.\r | |
38 | \r | |
39 | **/\r | |
40 | VOID\r | |
41 | EnableDebugAgent (\r | |
42 | VOID\r | |
43 | )\r | |
44 | {\r | |
45 | //\r | |
46 | // Initialize Debug Agent to support source level debug in DXE phase\r | |
47 | //\r | |
48 | InitializeDebugAgent (DEBUG_AGENT_INIT_DXE_AP, NULL, NULL);\r | |
49 | }\r | |
50 | \r | |
93ca4c0f JF |
51 | /**\r |
52 | Get the pointer to CPU MP Data structure.\r | |
53 | \r | |
54 | @return The pointer to CPU MP Data structure.\r | |
55 | **/\r | |
56 | CPU_MP_DATA *\r | |
57 | GetCpuMpData (\r | |
58 | VOID\r | |
59 | )\r | |
60 | {\r | |
61 | ASSERT (mCpuMpData != NULL);\r | |
62 | return mCpuMpData;\r | |
63 | }\r | |
64 | \r | |
65 | /**\r | |
66 | Save the pointer to CPU MP Data structure.\r | |
67 | \r | |
68 | @param[in] CpuMpData The pointer to CPU MP Data structure will be saved.\r | |
69 | **/\r | |
70 | VOID\r | |
71 | SaveCpuMpData (\r | |
72 | IN CPU_MP_DATA *CpuMpData\r | |
73 | )\r | |
74 | {\r | |
75 | mCpuMpData = CpuMpData;\r | |
76 | }\r | |
77 | \r | |
96378861 | 78 | /**\r |
e4ff6349 | 79 | Get available system memory below 0x88000 by specified size.\r |
ed66e0e3 | 80 | \r |
a6b3d753 | 81 | @param[in] WakeupBufferSize Wakeup buffer size required\r |
3ed4e502 | 82 | \r |
a6b3d753 SZ |
83 | @retval other Return wakeup buffer address below 1MB.\r |
84 | @retval -1 Cannot find free memory below 1MB.\r | |
ed66e0e3 | 85 | **/\r |
a6b3d753 SZ |
86 | UINTN\r |
87 | GetWakeupBuffer (\r | |
88 | IN UINTN WakeupBufferSize\r | |
ed66e0e3 JF |
89 | )\r |
90 | {\r | |
a6b3d753 SZ |
91 | EFI_STATUS Status;\r |
92 | EFI_PHYSICAL_ADDRESS StartAddress;\r | |
93 | \r | |
e4ff6349 ED |
94 | //\r |
95 | // Try to allocate buffer below 1M for waking vector.\r | |
96 | // LegacyBios driver only reports warning when page allocation in range\r | |
97 | // [0x60000, 0x88000) fails.\r | |
98 | // This library is consumed by CpuDxe driver to produce CPU Arch protocol.\r | |
99 | // LagacyBios driver depends on CPU Arch protocol which guarantees below\r | |
100 | // allocation runs earlier than LegacyBios driver.\r | |
101 | //\r | |
102 | StartAddress = 0x88000;\r | |
a6b3d753 SZ |
103 | Status = gBS->AllocatePages (\r |
104 | AllocateMaxAddress,\r | |
105 | EfiBootServicesData,\r | |
106 | EFI_SIZE_TO_PAGES (WakeupBufferSize),\r | |
107 | &StartAddress\r | |
108 | );\r | |
109 | ASSERT_EFI_ERROR (Status);\r | |
e4ff6349 | 110 | if (EFI_ERROR (Status)) {\r |
a6b3d753 | 111 | StartAddress = (EFI_PHYSICAL_ADDRESS) -1;\r |
3ed4e502 | 112 | }\r |
e4ff6349 ED |
113 | \r |
114 | DEBUG ((DEBUG_INFO, "WakeupBufferStart = %x, WakeupBufferSize = %x\n",\r | |
115 | (UINTN) StartAddress, WakeupBufferSize));\r | |
116 | \r | |
a6b3d753 | 117 | return (UINTN) StartAddress;\r |
ed66e0e3 JF |
118 | }\r |
119 | \r | |
f32bfe6d JW |
120 | /**\r |
121 | Get available EfiBootServicesCode memory below 4GB by specified size.\r | |
122 | \r | |
123 | This buffer is required to safely transfer AP from real address mode to\r | |
124 | protected mode or long mode, due to the fact that the buffer returned by\r | |
125 | GetWakeupBuffer() may be marked as non-executable.\r | |
126 | \r | |
127 | @param[in] BufferSize Wakeup transition buffer size.\r | |
128 | \r | |
129 | @retval other Return wakeup transition buffer address below 4GB.\r | |
130 | @retval 0 Cannot find free memory below 4GB.\r | |
131 | **/\r | |
132 | UINTN\r | |
133 | GetModeTransitionBuffer (\r | |
134 | IN UINTN BufferSize\r | |
135 | )\r | |
136 | {\r | |
137 | EFI_STATUS Status;\r | |
138 | EFI_PHYSICAL_ADDRESS StartAddress;\r | |
139 | \r | |
140 | StartAddress = BASE_4GB - 1;\r | |
141 | Status = gBS->AllocatePages (\r | |
142 | AllocateMaxAddress,\r | |
143 | EfiBootServicesCode,\r | |
144 | EFI_SIZE_TO_PAGES (BufferSize),\r | |
145 | &StartAddress\r | |
146 | );\r | |
147 | if (EFI_ERROR (Status)) {\r | |
148 | StartAddress = 0;\r | |
149 | }\r | |
150 | \r | |
151 | return (UINTN)StartAddress;\r | |
152 | }\r | |
153 | \r | |
96378861 JF |
154 | /**\r |
155 | Checks APs status and updates APs status if needed.\r | |
156 | \r | |
157 | **/\r | |
158 | VOID\r | |
159 | CheckAndUpdateApsStatus (\r | |
160 | VOID\r | |
161 | )\r | |
162 | {\r | |
08085f08 JF |
163 | UINTN ProcessorNumber;\r |
164 | EFI_STATUS Status;\r | |
165 | CPU_MP_DATA *CpuMpData;\r | |
166 | \r | |
167 | CpuMpData = GetCpuMpData ();\r | |
168 | \r | |
169 | //\r | |
170 | // First, check whether pending StartupAllAPs() exists.\r | |
171 | //\r | |
172 | if (CpuMpData->WaitEvent != NULL) {\r | |
173 | \r | |
174 | Status = CheckAllAPs ();\r | |
175 | //\r | |
176 | // If all APs finish for StartupAllAPs(), signal the WaitEvent for it.\r | |
177 | //\r | |
178 | if (Status != EFI_NOT_READY) {\r | |
179 | Status = gBS->SignalEvent (CpuMpData->WaitEvent);\r | |
180 | CpuMpData->WaitEvent = NULL;\r | |
181 | }\r | |
182 | }\r | |
183 | \r | |
184 | //\r | |
185 | // Second, check whether pending StartupThisAPs() callings exist.\r | |
186 | //\r | |
187 | for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r | |
188 | \r | |
189 | if (CpuMpData->CpuData[ProcessorNumber].WaitEvent == NULL) {\r | |
190 | continue;\r | |
191 | }\r | |
192 | \r | |
193 | Status = CheckThisAP (ProcessorNumber);\r | |
194 | \r | |
195 | if (Status != EFI_NOT_READY) {\r | |
196 | gBS->SignalEvent (CpuMpData->CpuData[ProcessorNumber].WaitEvent);\r | |
197 | CpuMpData->CpuData[ProcessorNumber].WaitEvent = NULL;\r | |
198 | }\r | |
199 | }\r | |
96378861 JF |
200 | }\r |
201 | \r | |
202 | /**\r | |
203 | Checks APs' status periodically.\r | |
204 | \r | |
438f1766 | 205 | This function is triggered by timer periodically to check the\r |
96378861 JF |
206 | state of APs for StartupAllAPs() and StartupThisAP() executed\r |
207 | in non-blocking mode.\r | |
208 | \r | |
209 | @param[in] Event Event triggered.\r | |
210 | @param[in] Context Parameter passed with the event.\r | |
211 | \r | |
212 | **/\r | |
213 | VOID\r | |
214 | EFIAPI\r | |
215 | CheckApsStatus (\r | |
216 | IN EFI_EVENT Event,\r | |
217 | IN VOID *Context\r | |
218 | )\r | |
219 | {\r | |
220 | //\r | |
221 | // If CheckApsStatus() is not stopped, otherwise return immediately.\r | |
222 | //\r | |
223 | if (!mStopCheckAllApsStatus) {\r | |
224 | CheckAndUpdateApsStatus ();\r | |
225 | }\r | |
226 | }\r | |
ed66e0e3 | 227 | \r |
4d3314f6 JF |
228 | /**\r |
229 | Get Protected mode code segment from current GDT table.\r | |
230 | \r | |
b31c1ad1 | 231 | @return Protected mode code segment value.\r |
4d3314f6 JF |
232 | **/\r |
233 | UINT16\r | |
234 | GetProtectedModeCS (\r | |
235 | VOID\r | |
236 | )\r | |
237 | {\r | |
238 | IA32_DESCRIPTOR GdtrDesc;\r | |
239 | IA32_SEGMENT_DESCRIPTOR *GdtEntry;\r | |
240 | UINTN GdtEntryCount;\r | |
241 | UINT16 Index;\r | |
242 | \r | |
4d3314f6 JF |
243 | AsmReadGdtr (&GdtrDesc);\r |
244 | GdtEntryCount = (GdtrDesc.Limit + 1) / sizeof (IA32_SEGMENT_DESCRIPTOR);\r | |
245 | GdtEntry = (IA32_SEGMENT_DESCRIPTOR *) GdtrDesc.Base;\r | |
246 | for (Index = 0; Index < GdtEntryCount; Index++) {\r | |
247 | if (GdtEntry->Bits.L == 0) {\r | |
248 | if (GdtEntry->Bits.Type > 8 && GdtEntry->Bits.L == 0) {\r | |
249 | break;\r | |
250 | }\r | |
251 | }\r | |
252 | GdtEntry++;\r | |
253 | }\r | |
37fba7c2 | 254 | ASSERT (Index != GdtEntryCount);\r |
4d3314f6 JF |
255 | return Index * 8;\r |
256 | }\r | |
257 | \r | |
258 | /**\r | |
259 | Do sync on APs.\r | |
260 | \r | |
261 | @param[in, out] Buffer Pointer to private data buffer.\r | |
262 | **/\r | |
263 | VOID\r | |
264 | EFIAPI\r | |
265 | RelocateApLoop (\r | |
266 | IN OUT VOID *Buffer\r | |
267 | )\r | |
268 | {\r | |
269 | CPU_MP_DATA *CpuMpData;\r | |
270 | BOOLEAN MwaitSupport;\r | |
271 | ASM_RELOCATE_AP_LOOP AsmRelocateApLoopFunc;\r | |
bf2786dc | 272 | UINTN ProcessorNumber;\r |
4d3314f6 | 273 | \r |
7367cc6c | 274 | MpInitLibWhoAmI (&ProcessorNumber);\r |
4d3314f6 JF |
275 | CpuMpData = GetCpuMpData ();\r |
276 | MwaitSupport = IsMwaitSupport ();\r | |
081f6416 | 277 | AsmRelocateApLoopFunc = (ASM_RELOCATE_AP_LOOP) (UINTN) mReservedApLoopFunc;\r |
bf2786dc JF |
278 | AsmRelocateApLoopFunc (\r |
279 | MwaitSupport,\r | |
280 | CpuMpData->ApTargetCState,\r | |
281 | CpuMpData->PmCodeSegment,\r | |
9f91cb01 JF |
282 | mReservedTopOfApStack - ProcessorNumber * AP_SAFE_STACK_SIZE,\r |
283 | (UINTN) &mNumberToFinish\r | |
bf2786dc | 284 | );\r |
4d3314f6 JF |
285 | //\r |
286 | // It should never reach here\r | |
287 | //\r | |
288 | ASSERT (FALSE);\r | |
289 | }\r | |
290 | \r | |
291 | /**\r | |
292 | Callback function for ExitBootServices.\r | |
293 | \r | |
294 | @param[in] Event Event whose notification function is being invoked.\r | |
295 | @param[in] Context The pointer to the notification function's context,\r | |
296 | which is implementation-dependent.\r | |
297 | \r | |
298 | **/\r | |
299 | VOID\r | |
300 | EFIAPI\r | |
86af2eb8 | 301 | MpInitChangeApLoopCallback (\r |
4d3314f6 JF |
302 | IN EFI_EVENT Event,\r |
303 | IN VOID *Context\r | |
304 | )\r | |
305 | {\r | |
306 | CPU_MP_DATA *CpuMpData;\r | |
5183fb37 | 307 | \r |
4d3314f6 JF |
308 | CpuMpData = GetCpuMpData ();\r |
309 | CpuMpData->PmCodeSegment = GetProtectedModeCS ();\r | |
310 | CpuMpData->ApLoopMode = PcdGet8 (PcdCpuApLoopMode);\r | |
9f91cb01 | 311 | mNumberToFinish = CpuMpData->CpuCount - 1;\r |
cf4e79e4 | 312 | WakeUpAP (CpuMpData, TRUE, 0, RelocateApLoop, NULL, TRUE);\r |
9f91cb01 JF |
313 | while (mNumberToFinish > 0) {\r |
314 | CpuPause ();\r | |
315 | }\r | |
86af2eb8 | 316 | DEBUG ((DEBUG_INFO, "%a() done!\n", __FUNCTION__));\r |
4d3314f6 JF |
317 | }\r |
318 | \r | |
93ca4c0f JF |
319 | /**\r |
320 | Initialize global data for MP support.\r | |
321 | \r | |
322 | @param[in] CpuMpData The pointer to CPU MP Data structure.\r | |
323 | **/\r | |
324 | VOID\r | |
325 | InitMpGlobalData (\r | |
326 | IN CPU_MP_DATA *CpuMpData\r | |
327 | )\r | |
328 | {\r | |
15720a6c JW |
329 | EFI_STATUS Status;\r |
330 | EFI_PHYSICAL_ADDRESS Address;\r | |
331 | UINTN ApSafeBufferSize;\r | |
332 | UINTN Index;\r | |
333 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;\r | |
334 | UINTN StackBase;\r | |
52315261 | 335 | CPU_INFO_IN_HOB *CpuInfoInHob;\r |
96378861 | 336 | \r |
93ca4c0f JF |
337 | SaveCpuMpData (CpuMpData);\r |
338 | \r | |
14e8137c JF |
339 | if (CpuMpData->CpuCount == 1) {\r |
340 | //\r | |
341 | // If only BSP exists, return\r | |
342 | //\r | |
343 | return;\r | |
344 | }\r | |
345 | \r | |
15720a6c JW |
346 | if (PcdGetBool (PcdCpuStackGuard)) {\r |
347 | //\r | |
348 | // One extra page at the bottom of the stack is needed for Guard page.\r | |
349 | //\r | |
350 | if (CpuMpData->CpuApStackSize <= EFI_PAGE_SIZE) {\r | |
351 | DEBUG ((DEBUG_ERROR, "PcdCpuApStackSize is not big enough for Stack Guard!\n"));\r | |
352 | ASSERT (FALSE);\r | |
353 | }\r | |
354 | \r | |
52315261 JW |
355 | //\r |
356 | // DXE will reuse stack allocated for APs at PEI phase if it's available.\r | |
357 | // Let's check it here.\r | |
358 | //\r | |
359 | // Note: BSP's stack guard is set at DxeIpl phase. But for the sake of\r | |
360 | // BSP/AP exchange, stack guard for ApTopOfStack of cpu 0 will still be\r | |
361 | // set here.\r | |
362 | //\r | |
363 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r | |
15720a6c | 364 | for (Index = 0; Index < CpuMpData->CpuCount; ++Index) {\r |
52315261 | 365 | if (CpuInfoInHob != NULL && CpuInfoInHob[Index].ApTopOfStack != 0) {\r |
20737c2f | 366 | StackBase = (UINTN)CpuInfoInHob[Index].ApTopOfStack - CpuMpData->CpuApStackSize;\r |
52315261 JW |
367 | } else {\r |
368 | StackBase = CpuMpData->Buffer + Index * CpuMpData->CpuApStackSize;\r | |
369 | }\r | |
15720a6c JW |
370 | \r |
371 | Status = gDS->GetMemorySpaceDescriptor (StackBase, &MemDesc);\r | |
372 | ASSERT_EFI_ERROR (Status);\r | |
373 | \r | |
374 | Status = gDS->SetMemorySpaceAttributes (\r | |
375 | StackBase,\r | |
376 | EFI_PAGES_TO_SIZE (1),\r | |
377 | MemDesc.Attributes | EFI_MEMORY_RP\r | |
378 | );\r | |
379 | ASSERT_EFI_ERROR (Status);\r | |
52315261 JW |
380 | \r |
381 | DEBUG ((DEBUG_INFO, "Stack Guard set at %lx [cpu%lu]!\n",\r | |
382 | (UINT64)StackBase, (UINT64)Index));\r | |
15720a6c JW |
383 | }\r |
384 | }\r | |
385 | \r | |
5183fb37 | 386 | //\r |
ffd6b0b1 JF |
387 | // Avoid APs access invalid buffer data which allocated by BootServices,\r |
388 | // so we will allocate reserved data for AP loop code. We also need to\r | |
389 | // allocate this buffer below 4GB due to APs may be transferred to 32bit\r | |
390 | // protected mode on long mode DXE.\r | |
5183fb37 JF |
391 | // Allocating it in advance since memory services are not available in\r |
392 | // Exit Boot Services callback function.\r | |
393 | //\r | |
bc2288f5 JW |
394 | ApSafeBufferSize = EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (\r |
395 | CpuMpData->AddressMap.RelocateApLoopFuncSize\r | |
396 | ));\r | |
ffd6b0b1 JF |
397 | Address = BASE_4GB - 1;\r |
398 | Status = gBS->AllocatePages (\r | |
399 | AllocateMaxAddress,\r | |
400 | EfiReservedMemoryType,\r | |
bf2786dc | 401 | EFI_SIZE_TO_PAGES (ApSafeBufferSize),\r |
ffd6b0b1 JF |
402 | &Address\r |
403 | );\r | |
404 | ASSERT_EFI_ERROR (Status);\r | |
bc2288f5 | 405 | \r |
ffd6b0b1 | 406 | mReservedApLoopFunc = (VOID *) (UINTN) Address;\r |
5183fb37 | 407 | ASSERT (mReservedApLoopFunc != NULL);\r |
bc2288f5 JW |
408 | \r |
409 | //\r | |
410 | // Make sure that the buffer memory is executable if NX protection is enabled\r | |
411 | // for EfiReservedMemoryType.\r | |
7367cc6c | 412 | //\r |
bc2288f5 JW |
413 | // TODO: Check EFI_MEMORY_XP bit set or not once it's available in DXE GCD\r |
414 | // service.\r | |
415 | //\r | |
416 | Status = gDS->GetMemorySpaceDescriptor (Address, &MemDesc);\r | |
417 | if (!EFI_ERROR (Status)) {\r | |
418 | gDS->SetMemorySpaceAttributes (\r | |
419 | Address,\r | |
420 | ApSafeBufferSize,\r | |
421 | MemDesc.Attributes & (~EFI_MEMORY_XP)\r | |
422 | );\r | |
423 | }\r | |
424 | \r | |
425 | ApSafeBufferSize = EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (\r | |
426 | CpuMpData->CpuCount * AP_SAFE_STACK_SIZE\r | |
427 | ));\r | |
428 | Address = BASE_4GB - 1;\r | |
429 | Status = gBS->AllocatePages (\r | |
430 | AllocateMaxAddress,\r | |
431 | EfiReservedMemoryType,\r | |
432 | EFI_SIZE_TO_PAGES (ApSafeBufferSize),\r | |
433 | &Address\r | |
434 | );\r | |
435 | ASSERT_EFI_ERROR (Status);\r | |
436 | \r | |
437 | mReservedTopOfApStack = (UINTN) Address + ApSafeBufferSize;\r | |
bf2786dc | 438 | ASSERT ((mReservedTopOfApStack & (UINTN)(CPU_STACK_ALIGNMENT - 1)) == 0);\r |
ffd6b0b1 JF |
439 | CopyMem (\r |
440 | mReservedApLoopFunc,\r | |
441 | CpuMpData->AddressMap.RelocateApLoopFuncAddress,\r | |
442 | CpuMpData->AddressMap.RelocateApLoopFuncSize\r | |
443 | );\r | |
5183fb37 | 444 | \r |
96378861 JF |
445 | Status = gBS->CreateEvent (\r |
446 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
447 | TPL_NOTIFY,\r | |
448 | CheckApsStatus,\r | |
449 | NULL,\r | |
450 | &mCheckAllApsEvent\r | |
451 | );\r | |
452 | ASSERT_EFI_ERROR (Status);\r | |
453 | \r | |
454 | //\r | |
455 | // Set timer to check all APs status.\r | |
456 | //\r | |
457 | Status = gBS->SetTimer (\r | |
458 | mCheckAllApsEvent,\r | |
459 | TimerPeriodic,\r | |
460 | AP_CHECK_INTERVAL\r | |
461 | );\r | |
462 | ASSERT_EFI_ERROR (Status);\r | |
8677a56a | 463 | \r |
4d3314f6 JF |
464 | Status = gBS->CreateEvent (\r |
465 | EVT_SIGNAL_EXIT_BOOT_SERVICES,\r | |
466 | TPL_CALLBACK,\r | |
86af2eb8 | 467 | MpInitChangeApLoopCallback,\r |
4d3314f6 JF |
468 | NULL,\r |
469 | &mMpInitExitBootServicesEvent\r | |
470 | );\r | |
471 | ASSERT_EFI_ERROR (Status);\r | |
8677a56a JF |
472 | \r |
473 | Status = gBS->CreateEventEx (\r | |
474 | EVT_NOTIFY_SIGNAL,\r | |
475 | TPL_CALLBACK,\r | |
476 | MpInitChangeApLoopCallback,\r | |
477 | NULL,\r | |
478 | &gEfiEventLegacyBootGuid,\r | |
479 | &mLegacyBootEvent\r | |
480 | );\r | |
481 | ASSERT_EFI_ERROR (Status);\r | |
93ca4c0f | 482 | }\r |
3e8ad6bd JF |
483 | \r |
484 | /**\r | |
485 | This service executes a caller provided function on all enabled APs.\r | |
486 | \r | |
487 | @param[in] Procedure A pointer to the function to be run on\r | |
488 | enabled APs of the system. See type\r | |
489 | EFI_AP_PROCEDURE.\r | |
490 | @param[in] SingleThread If TRUE, then all the enabled APs execute\r | |
491 | the function specified by Procedure one by\r | |
492 | one, in ascending order of processor handle\r | |
493 | number. If FALSE, then all the enabled APs\r | |
494 | execute the function specified by Procedure\r | |
495 | simultaneously.\r | |
496 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
497 | service. If it is NULL, then execute in\r | |
498 | blocking mode. BSP waits until all APs finish\r | |
499 | or TimeoutInMicroSeconds expires. If it's\r | |
500 | not NULL, then execute in non-blocking mode.\r | |
501 | BSP requests the function specified by\r | |
502 | Procedure to be started on all the enabled\r | |
503 | APs, and go on executing immediately. If\r | |
504 | all return from Procedure, or TimeoutInMicroSeconds\r | |
505 | expires, this event is signaled. The BSP\r | |
506 | can use the CheckEvent() or WaitForEvent()\r | |
507 | services to check the state of event. Type\r | |
508 | EFI_EVENT is defined in CreateEvent() in\r | |
509 | the Unified Extensible Firmware Interface\r | |
510 | Specification.\r | |
367284e7 | 511 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
3e8ad6bd JF |
512 | APs to return from Procedure, either for\r |
513 | blocking or non-blocking mode. Zero means\r | |
514 | infinity. If the timeout expires before\r | |
515 | all APs return from Procedure, then Procedure\r | |
516 | on the failed APs is terminated. All enabled\r | |
517 | APs are available for next function assigned\r | |
518 | by MpInitLibStartupAllAPs() or\r | |
519 | MPInitLibStartupThisAP().\r | |
520 | If the timeout expires in blocking mode,\r | |
521 | BSP returns EFI_TIMEOUT. If the timeout\r | |
522 | expires in non-blocking mode, WaitEvent\r | |
523 | is signaled with SignalEvent().\r | |
524 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
525 | all APs.\r | |
526 | @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,\r | |
527 | if all APs finish successfully, then its\r | |
528 | content is set to NULL. If not all APs\r | |
529 | finish before timeout expires, then its\r | |
530 | content is set to address of the buffer\r | |
531 | holding handle numbers of the failed APs.\r | |
532 | The buffer is allocated by MP Initialization\r | |
533 | library, and it's the caller's responsibility to\r | |
534 | free the buffer with FreePool() service.\r | |
535 | In blocking mode, it is ready for consumption\r | |
536 | when the call returns. In non-blocking mode,\r | |
537 | it is ready when WaitEvent is signaled. The\r | |
538 | list of failed CPU is terminated by\r | |
539 | END_OF_CPU_LIST.\r | |
540 | \r | |
541 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r | |
542 | the timeout expired.\r | |
543 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r | |
544 | to all enabled APs.\r | |
545 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
546 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
547 | signaled.\r | |
548 | @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not\r | |
549 | supported.\r | |
550 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
551 | @retval EFI_NOT_STARTED No enabled APs exist in the system.\r | |
552 | @retval EFI_NOT_READY Any enabled APs are busy.\r | |
553 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
554 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
555 | all enabled APs have finished.\r | |
556 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
557 | \r | |
558 | **/\r | |
559 | EFI_STATUS\r | |
560 | EFIAPI\r | |
561 | MpInitLibStartupAllAPs (\r | |
562 | IN EFI_AP_PROCEDURE Procedure,\r | |
563 | IN BOOLEAN SingleThread,\r | |
564 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
565 | IN UINTN TimeoutInMicroseconds,\r | |
566 | IN VOID *ProcedureArgument OPTIONAL,\r | |
567 | OUT UINTN **FailedCpuList OPTIONAL\r | |
568 | )\r | |
569 | {\r | |
86efe976 JF |
570 | EFI_STATUS Status;\r |
571 | \r | |
572 | //\r | |
573 | // Temporarily stop checkAllApsStatus for avoid resource dead-lock.\r | |
574 | //\r | |
575 | mStopCheckAllApsStatus = TRUE;\r | |
576 | \r | |
577 | Status = StartupAllAPsWorker (\r | |
578 | Procedure,\r | |
579 | SingleThread,\r | |
580 | WaitEvent,\r | |
581 | TimeoutInMicroseconds,\r | |
582 | ProcedureArgument,\r | |
583 | FailedCpuList\r | |
584 | );\r | |
585 | \r | |
586 | //\r | |
587 | // Start checkAllApsStatus\r | |
588 | //\r | |
589 | mStopCheckAllApsStatus = FALSE;\r | |
590 | \r | |
591 | return Status;\r | |
3e8ad6bd JF |
592 | }\r |
593 | \r | |
594 | /**\r | |
595 | This service lets the caller get one enabled AP to execute a caller-provided\r | |
596 | function.\r | |
597 | \r | |
598 | @param[in] Procedure A pointer to the function to be run on the\r | |
599 | designated AP of the system. See type\r | |
600 | EFI_AP_PROCEDURE.\r | |
601 | @param[in] ProcessorNumber The handle number of the AP. The range is\r | |
602 | from 0 to the total number of logical\r | |
603 | processors minus 1. The total number of\r | |
604 | logical processors can be retrieved by\r | |
605 | MpInitLibGetNumberOfProcessors().\r | |
606 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
607 | service. If it is NULL, then execute in\r | |
608 | blocking mode. BSP waits until this AP finish\r | |
609 | or TimeoutInMicroSeconds expires. If it's\r | |
610 | not NULL, then execute in non-blocking mode.\r | |
611 | BSP requests the function specified by\r | |
612 | Procedure to be started on this AP,\r | |
613 | and go on executing immediately. If this AP\r | |
614 | return from Procedure or TimeoutInMicroSeconds\r | |
615 | expires, this event is signaled. The BSP\r | |
616 | can use the CheckEvent() or WaitForEvent()\r | |
617 | services to check the state of event. Type\r | |
618 | EFI_EVENT is defined in CreateEvent() in\r | |
619 | the Unified Extensible Firmware Interface\r | |
620 | Specification.\r | |
367284e7 | 621 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
3e8ad6bd JF |
622 | this AP to finish this Procedure, either for\r |
623 | blocking or non-blocking mode. Zero means\r | |
624 | infinity. If the timeout expires before\r | |
625 | this AP returns from Procedure, then Procedure\r | |
626 | on the AP is terminated. The\r | |
627 | AP is available for next function assigned\r | |
628 | by MpInitLibStartupAllAPs() or\r | |
629 | MpInitLibStartupThisAP().\r | |
630 | If the timeout expires in blocking mode,\r | |
631 | BSP returns EFI_TIMEOUT. If the timeout\r | |
632 | expires in non-blocking mode, WaitEvent\r | |
633 | is signaled with SignalEvent().\r | |
634 | @param[in] ProcedureArgument The parameter passed into Procedure on the\r | |
635 | specified AP.\r | |
636 | @param[out] Finished If NULL, this parameter is ignored. In\r | |
637 | blocking mode, this parameter is ignored.\r | |
638 | In non-blocking mode, if AP returns from\r | |
639 | Procedure before the timeout expires, its\r | |
640 | content is set to TRUE. Otherwise, the\r | |
641 | value is set to FALSE. The caller can\r | |
642 | determine if the AP returned from Procedure\r | |
643 | by evaluating this value.\r | |
644 | \r | |
645 | @retval EFI_SUCCESS In blocking mode, specified AP finished before\r | |
646 | the timeout expires.\r | |
647 | @retval EFI_SUCCESS In non-blocking mode, the function has been\r | |
648 | dispatched to specified AP.\r | |
649 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
650 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
651 | signaled.\r | |
652 | @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not\r | |
653 | supported.\r | |
654 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
655 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
656 | the specified AP has finished.\r | |
657 | @retval EFI_NOT_READY The specified AP is busy.\r | |
658 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
659 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
660 | ProcessorNumber does not exist.\r | |
661 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
662 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
663 | \r | |
664 | **/\r | |
665 | EFI_STATUS\r | |
666 | EFIAPI\r | |
667 | MpInitLibStartupThisAP (\r | |
668 | IN EFI_AP_PROCEDURE Procedure,\r | |
669 | IN UINTN ProcessorNumber,\r | |
670 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
671 | IN UINTN TimeoutInMicroseconds,\r | |
672 | IN VOID *ProcedureArgument OPTIONAL,\r | |
673 | OUT BOOLEAN *Finished OPTIONAL\r | |
674 | )\r | |
675 | {\r | |
20ae5774 JF |
676 | EFI_STATUS Status;\r |
677 | \r | |
678 | //\r | |
679 | // temporarily stop checkAllApsStatus for avoid resource dead-lock.\r | |
680 | //\r | |
681 | mStopCheckAllApsStatus = TRUE;\r | |
682 | \r | |
683 | Status = StartupThisAPWorker (\r | |
684 | Procedure,\r | |
685 | ProcessorNumber,\r | |
686 | WaitEvent,\r | |
687 | TimeoutInMicroseconds,\r | |
688 | ProcedureArgument,\r | |
689 | Finished\r | |
690 | );\r | |
691 | \r | |
692 | mStopCheckAllApsStatus = FALSE;\r | |
693 | \r | |
694 | return Status;\r | |
3e8ad6bd JF |
695 | }\r |
696 | \r | |
697 | /**\r | |
698 | This service switches the requested AP to be the BSP from that point onward.\r | |
699 | This service changes the BSP for all purposes. This call can only be performed\r | |
700 | by the current BSP.\r | |
701 | \r | |
702 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r | |
703 | BSP. The range is from 0 to the total number of\r | |
704 | logical processors minus 1. The total number of\r | |
705 | logical processors can be retrieved by\r | |
706 | MpInitLibGetNumberOfProcessors().\r | |
707 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r | |
708 | enabled AP. Otherwise, it will be disabled.\r | |
709 | \r | |
710 | @retval EFI_SUCCESS BSP successfully switched.\r | |
711 | @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to\r | |
712 | this service returning.\r | |
713 | @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r | |
714 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
715 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
716 | ProcessorNumber does not exist.\r | |
717 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or\r | |
718 | a disabled AP.\r | |
719 | @retval EFI_NOT_READY The specified AP is busy.\r | |
720 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
721 | \r | |
722 | **/\r | |
723 | EFI_STATUS\r | |
724 | EFIAPI\r | |
725 | MpInitLibSwitchBSP (\r | |
726 | IN UINTN ProcessorNumber,\r | |
727 | IN BOOLEAN EnableOldBSP\r | |
728 | )\r | |
729 | {\r | |
b6e45716 JF |
730 | EFI_STATUS Status;\r |
731 | EFI_TIMER_ARCH_PROTOCOL *Timer;\r | |
732 | UINT64 TimerPeriod;\r | |
41be0da5 | 733 | \r |
8ad05bd2 | 734 | TimerPeriod = 0;\r |
b6e45716 JF |
735 | //\r |
736 | // Locate Timer Arch Protocol\r | |
737 | //\r | |
738 | Status = gBS->LocateProtocol (&gEfiTimerArchProtocolGuid, NULL, (VOID **) &Timer);\r | |
739 | if (EFI_ERROR (Status)) {\r | |
740 | Timer = NULL;\r | |
741 | }\r | |
742 | \r | |
743 | if (Timer != NULL) {\r | |
744 | //\r | |
745 | // Save current rate of DXE Timer\r | |
746 | //\r | |
747 | Timer->GetTimerPeriod (Timer, &TimerPeriod);\r | |
748 | //\r | |
749 | // Disable DXE Timer and drain pending interrupts\r | |
750 | //\r | |
751 | Timer->SetTimerPeriod (Timer, 0);\r | |
752 | }\r | |
41be0da5 JF |
753 | \r |
754 | Status = SwitchBSPWorker (ProcessorNumber, EnableOldBSP);\r | |
755 | \r | |
b6e45716 JF |
756 | if (Timer != NULL) {\r |
757 | //\r | |
758 | // Enable and restore rate of DXE Timer\r | |
759 | //\r | |
760 | Timer->SetTimerPeriod (Timer, TimerPeriod);\r | |
761 | }\r | |
762 | \r | |
41be0da5 | 763 | return Status;\r |
3e8ad6bd JF |
764 | }\r |
765 | \r | |
766 | /**\r | |
767 | This service lets the caller enable or disable an AP from this point onward.\r | |
768 | This service may only be called from the BSP.\r | |
769 | \r | |
770 | @param[in] ProcessorNumber The handle number of AP.\r | |
771 | The range is from 0 to the total number of\r | |
772 | logical processors minus 1. The total number of\r | |
773 | logical processors can be retrieved by\r | |
774 | MpInitLibGetNumberOfProcessors().\r | |
775 | @param[in] EnableAP Specifies the new state for the processor for\r | |
776 | enabled, FALSE for disabled.\r | |
777 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies\r | |
778 | the new health status of the AP. This flag\r | |
779 | corresponds to StatusFlag defined in\r | |
780 | EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only\r | |
781 | the PROCESSOR_HEALTH_STATUS_BIT is used. All other\r | |
782 | bits are ignored. If it is NULL, this parameter\r | |
783 | is ignored.\r | |
784 | \r | |
785 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
786 | @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed\r | |
787 | prior to this service returning.\r | |
788 | @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.\r | |
789 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
790 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber\r | |
791 | does not exist.\r | |
792 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.\r | |
793 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
794 | \r | |
795 | **/\r | |
796 | EFI_STATUS\r | |
797 | EFIAPI\r | |
798 | MpInitLibEnableDisableAP (\r | |
799 | IN UINTN ProcessorNumber,\r | |
800 | IN BOOLEAN EnableAP,\r | |
801 | IN UINT32 *HealthFlag OPTIONAL\r | |
802 | )\r | |
803 | {\r | |
e37109bc JF |
804 | EFI_STATUS Status;\r |
805 | BOOLEAN TempStopCheckState;\r | |
806 | \r | |
807 | TempStopCheckState = FALSE;\r | |
808 | //\r | |
809 | // temporarily stop checkAllAPsStatus for initialize parameters.\r | |
810 | //\r | |
811 | if (!mStopCheckAllApsStatus) {\r | |
812 | mStopCheckAllApsStatus = TRUE;\r | |
813 | TempStopCheckState = TRUE;\r | |
814 | }\r | |
815 | \r | |
816 | Status = EnableDisableApWorker (ProcessorNumber, EnableAP, HealthFlag);\r | |
817 | \r | |
818 | if (TempStopCheckState) {\r | |
819 | mStopCheckAllApsStatus = FALSE;\r | |
820 | }\r | |
821 | \r | |
822 | return Status;\r | |
3e8ad6bd | 823 | }\r |