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Commit | Line | Data |
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3e8ad6bd JF |
1 | /** @file\r |
2 | MP initialize support functions for DXE phase.\r | |
3 | \r | |
c788c2b1 | 4 | Copyright (c) 2016 - 2020, Intel Corporation. All rights reserved.<BR>\r |
0acd8697 | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
3e8ad6bd JF |
6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include "MpLib.h"\r | |
96378861 JF |
10 | \r |
11 | #include <Library/UefiLib.h>\r | |
12 | #include <Library/UefiBootServicesTableLib.h>\r | |
43c9fdcc | 13 | #include <Library/DebugAgentLib.h>\r |
15720a6c | 14 | #include <Library/DxeServicesTableLib.h>\r |
20da7ca4 | 15 | #include <Library/VmgExitLib.h>\r |
7b7508ad TL |
16 | #include <Register/Amd/Fam17Msr.h>\r |
17 | #include <Register/Amd/Ghcb.h>\r | |
96378861 | 18 | \r |
b6e45716 JF |
19 | #include <Protocol/Timer.h>\r |
20 | \r | |
bf2786dc | 21 | #define AP_SAFE_STACK_SIZE 128\r |
96378861 | 22 | \r |
93ca4c0f | 23 | CPU_MP_DATA *mCpuMpData = NULL;\r |
96378861 | 24 | EFI_EVENT mCheckAllApsEvent = NULL;\r |
4d3314f6 | 25 | EFI_EVENT mMpInitExitBootServicesEvent = NULL;\r |
8677a56a | 26 | EFI_EVENT mLegacyBootEvent = NULL;\r |
96378861 | 27 | volatile BOOLEAN mStopCheckAllApsStatus = TRUE;\r |
5183fb37 | 28 | VOID *mReservedApLoopFunc = NULL;\r |
bf2786dc | 29 | UINTN mReservedTopOfApStack;\r |
9f91cb01 | 30 | volatile UINT32 mNumberToFinish = 0;\r |
93ca4c0f | 31 | \r |
dbc22a17 TL |
32 | //\r |
33 | // Begin wakeup buffer allocation below 0x88000\r | |
34 | //\r | |
35 | STATIC EFI_PHYSICAL_ADDRESS mSevEsDxeWakeupBuffer = 0x88000;\r | |
36 | \r | |
43c9fdcc JF |
37 | /**\r |
38 | Enable Debug Agent to support source debugging on AP function.\r | |
39 | \r | |
40 | **/\r | |
41 | VOID\r | |
42 | EnableDebugAgent (\r | |
43 | VOID\r | |
44 | )\r | |
45 | {\r | |
46 | //\r | |
47 | // Initialize Debug Agent to support source level debug in DXE phase\r | |
48 | //\r | |
49 | InitializeDebugAgent (DEBUG_AGENT_INIT_DXE_AP, NULL, NULL);\r | |
50 | }\r | |
51 | \r | |
93ca4c0f JF |
52 | /**\r |
53 | Get the pointer to CPU MP Data structure.\r | |
54 | \r | |
55 | @return The pointer to CPU MP Data structure.\r | |
56 | **/\r | |
57 | CPU_MP_DATA *\r | |
58 | GetCpuMpData (\r | |
59 | VOID\r | |
60 | )\r | |
61 | {\r | |
62 | ASSERT (mCpuMpData != NULL);\r | |
63 | return mCpuMpData;\r | |
64 | }\r | |
65 | \r | |
66 | /**\r | |
67 | Save the pointer to CPU MP Data structure.\r | |
68 | \r | |
69 | @param[in] CpuMpData The pointer to CPU MP Data structure will be saved.\r | |
70 | **/\r | |
71 | VOID\r | |
72 | SaveCpuMpData (\r | |
73 | IN CPU_MP_DATA *CpuMpData\r | |
74 | )\r | |
75 | {\r | |
76 | mCpuMpData = CpuMpData;\r | |
77 | }\r | |
78 | \r | |
96378861 | 79 | /**\r |
e4ff6349 | 80 | Get available system memory below 0x88000 by specified size.\r |
ed66e0e3 | 81 | \r |
a6b3d753 | 82 | @param[in] WakeupBufferSize Wakeup buffer size required\r |
3ed4e502 | 83 | \r |
a6b3d753 SZ |
84 | @retval other Return wakeup buffer address below 1MB.\r |
85 | @retval -1 Cannot find free memory below 1MB.\r | |
ed66e0e3 | 86 | **/\r |
a6b3d753 SZ |
87 | UINTN\r |
88 | GetWakeupBuffer (\r | |
89 | IN UINTN WakeupBufferSize\r | |
ed66e0e3 JF |
90 | )\r |
91 | {\r | |
a6b3d753 SZ |
92 | EFI_STATUS Status;\r |
93 | EFI_PHYSICAL_ADDRESS StartAddress;\r | |
20da7ca4 TL |
94 | EFI_MEMORY_TYPE MemoryType;\r |
95 | \r | |
96 | if (PcdGetBool (PcdSevEsIsEnabled)) {\r | |
97 | MemoryType = EfiReservedMemoryType;\r | |
98 | } else {\r | |
99 | MemoryType = EfiBootServicesData;\r | |
100 | }\r | |
a6b3d753 | 101 | \r |
e4ff6349 ED |
102 | //\r |
103 | // Try to allocate buffer below 1M for waking vector.\r | |
104 | // LegacyBios driver only reports warning when page allocation in range\r | |
105 | // [0x60000, 0x88000) fails.\r | |
106 | // This library is consumed by CpuDxe driver to produce CPU Arch protocol.\r | |
107 | // LagacyBios driver depends on CPU Arch protocol which guarantees below\r | |
108 | // allocation runs earlier than LegacyBios driver.\r | |
109 | //\r | |
dbc22a17 TL |
110 | if (PcdGetBool (PcdSevEsIsEnabled)) {\r |
111 | //\r | |
112 | // SEV-ES Wakeup buffer should be under 0x88000 and under any previous one\r | |
113 | //\r | |
114 | StartAddress = mSevEsDxeWakeupBuffer;\r | |
115 | } else {\r | |
116 | StartAddress = 0x88000;\r | |
117 | }\r | |
a6b3d753 SZ |
118 | Status = gBS->AllocatePages (\r |
119 | AllocateMaxAddress,\r | |
20da7ca4 | 120 | MemoryType,\r |
a6b3d753 SZ |
121 | EFI_SIZE_TO_PAGES (WakeupBufferSize),\r |
122 | &StartAddress\r | |
123 | );\r | |
124 | ASSERT_EFI_ERROR (Status);\r | |
e4ff6349 | 125 | if (EFI_ERROR (Status)) {\r |
a6b3d753 | 126 | StartAddress = (EFI_PHYSICAL_ADDRESS) -1;\r |
dbc22a17 TL |
127 | } else if (PcdGetBool (PcdSevEsIsEnabled)) {\r |
128 | //\r | |
129 | // Next SEV-ES wakeup buffer allocation must be below this allocation\r | |
130 | //\r | |
131 | mSevEsDxeWakeupBuffer = StartAddress;\r | |
3ed4e502 | 132 | }\r |
e4ff6349 ED |
133 | \r |
134 | DEBUG ((DEBUG_INFO, "WakeupBufferStart = %x, WakeupBufferSize = %x\n",\r | |
135 | (UINTN) StartAddress, WakeupBufferSize));\r | |
136 | \r | |
a6b3d753 | 137 | return (UINTN) StartAddress;\r |
ed66e0e3 JF |
138 | }\r |
139 | \r | |
f32bfe6d JW |
140 | /**\r |
141 | Get available EfiBootServicesCode memory below 4GB by specified size.\r | |
142 | \r | |
143 | This buffer is required to safely transfer AP from real address mode to\r | |
144 | protected mode or long mode, due to the fact that the buffer returned by\r | |
145 | GetWakeupBuffer() may be marked as non-executable.\r | |
146 | \r | |
147 | @param[in] BufferSize Wakeup transition buffer size.\r | |
148 | \r | |
149 | @retval other Return wakeup transition buffer address below 4GB.\r | |
150 | @retval 0 Cannot find free memory below 4GB.\r | |
151 | **/\r | |
152 | UINTN\r | |
153 | GetModeTransitionBuffer (\r | |
154 | IN UINTN BufferSize\r | |
155 | )\r | |
156 | {\r | |
157 | EFI_STATUS Status;\r | |
158 | EFI_PHYSICAL_ADDRESS StartAddress;\r | |
159 | \r | |
160 | StartAddress = BASE_4GB - 1;\r | |
161 | Status = gBS->AllocatePages (\r | |
162 | AllocateMaxAddress,\r | |
163 | EfiBootServicesCode,\r | |
164 | EFI_SIZE_TO_PAGES (BufferSize),\r | |
165 | &StartAddress\r | |
166 | );\r | |
167 | if (EFI_ERROR (Status)) {\r | |
168 | StartAddress = 0;\r | |
169 | }\r | |
170 | \r | |
171 | return (UINTN)StartAddress;\r | |
172 | }\r | |
173 | \r | |
7b7508ad TL |
174 | /**\r |
175 | Return the address of the SEV-ES AP jump table.\r | |
176 | \r | |
177 | This buffer is required in order for an SEV-ES guest to transition from\r | |
178 | UEFI into an OS.\r | |
179 | \r | |
180 | @return Return SEV-ES AP jump table buffer\r | |
181 | **/\r | |
182 | UINTN\r | |
183 | GetSevEsAPMemory (\r | |
184 | VOID\r | |
185 | )\r | |
186 | {\r | |
20da7ca4 TL |
187 | EFI_STATUS Status;\r |
188 | EFI_PHYSICAL_ADDRESS StartAddress;\r | |
189 | MSR_SEV_ES_GHCB_REGISTER Msr;\r | |
190 | GHCB *Ghcb;\r | |
1b0db1ec | 191 | BOOLEAN InterruptState;\r |
7b7508ad TL |
192 | \r |
193 | //\r | |
194 | // Allocate 1 page for AP jump table page\r | |
195 | //\r | |
196 | StartAddress = BASE_4GB - 1;\r | |
197 | Status = gBS->AllocatePages (\r | |
198 | AllocateMaxAddress,\r | |
199 | EfiReservedMemoryType,\r | |
200 | 1,\r | |
201 | &StartAddress\r | |
202 | );\r | |
203 | ASSERT_EFI_ERROR (Status);\r | |
204 | \r | |
205 | DEBUG ((DEBUG_INFO, "Dxe: SevEsAPMemory = %lx\n", (UINTN) StartAddress));\r | |
206 | \r | |
20da7ca4 TL |
207 | //\r |
208 | // Save the SevEsAPMemory as the AP jump table.\r | |
209 | //\r | |
210 | Msr.GhcbPhysicalAddress = AsmReadMsr64 (MSR_SEV_ES_GHCB);\r | |
211 | Ghcb = Msr.Ghcb;\r | |
212 | \r | |
1b0db1ec | 213 | VmgInit (Ghcb, &InterruptState);\r |
20da7ca4 | 214 | VmgExit (Ghcb, SVM_EXIT_AP_JUMP_TABLE, 0, (UINT64) (UINTN) StartAddress);\r |
1b0db1ec | 215 | VmgDone (Ghcb, InterruptState);\r |
20da7ca4 | 216 | \r |
7b7508ad TL |
217 | return (UINTN) StartAddress;\r |
218 | }\r | |
219 | \r | |
96378861 JF |
220 | /**\r |
221 | Checks APs status and updates APs status if needed.\r | |
222 | \r | |
223 | **/\r | |
224 | VOID\r | |
225 | CheckAndUpdateApsStatus (\r | |
226 | VOID\r | |
227 | )\r | |
228 | {\r | |
08085f08 JF |
229 | UINTN ProcessorNumber;\r |
230 | EFI_STATUS Status;\r | |
231 | CPU_MP_DATA *CpuMpData;\r | |
232 | \r | |
233 | CpuMpData = GetCpuMpData ();\r | |
234 | \r | |
235 | //\r | |
236 | // First, check whether pending StartupAllAPs() exists.\r | |
237 | //\r | |
238 | if (CpuMpData->WaitEvent != NULL) {\r | |
239 | \r | |
240 | Status = CheckAllAPs ();\r | |
241 | //\r | |
242 | // If all APs finish for StartupAllAPs(), signal the WaitEvent for it.\r | |
243 | //\r | |
244 | if (Status != EFI_NOT_READY) {\r | |
245 | Status = gBS->SignalEvent (CpuMpData->WaitEvent);\r | |
246 | CpuMpData->WaitEvent = NULL;\r | |
247 | }\r | |
248 | }\r | |
249 | \r | |
250 | //\r | |
251 | // Second, check whether pending StartupThisAPs() callings exist.\r | |
252 | //\r | |
253 | for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r | |
254 | \r | |
255 | if (CpuMpData->CpuData[ProcessorNumber].WaitEvent == NULL) {\r | |
256 | continue;\r | |
257 | }\r | |
258 | \r | |
259 | Status = CheckThisAP (ProcessorNumber);\r | |
260 | \r | |
261 | if (Status != EFI_NOT_READY) {\r | |
262 | gBS->SignalEvent (CpuMpData->CpuData[ProcessorNumber].WaitEvent);\r | |
263 | CpuMpData->CpuData[ProcessorNumber].WaitEvent = NULL;\r | |
264 | }\r | |
265 | }\r | |
96378861 JF |
266 | }\r |
267 | \r | |
268 | /**\r | |
269 | Checks APs' status periodically.\r | |
270 | \r | |
438f1766 | 271 | This function is triggered by timer periodically to check the\r |
96378861 JF |
272 | state of APs for StartupAllAPs() and StartupThisAP() executed\r |
273 | in non-blocking mode.\r | |
274 | \r | |
275 | @param[in] Event Event triggered.\r | |
276 | @param[in] Context Parameter passed with the event.\r | |
277 | \r | |
278 | **/\r | |
279 | VOID\r | |
280 | EFIAPI\r | |
281 | CheckApsStatus (\r | |
282 | IN EFI_EVENT Event,\r | |
283 | IN VOID *Context\r | |
284 | )\r | |
285 | {\r | |
286 | //\r | |
287 | // If CheckApsStatus() is not stopped, otherwise return immediately.\r | |
288 | //\r | |
289 | if (!mStopCheckAllApsStatus) {\r | |
290 | CheckAndUpdateApsStatus ();\r | |
291 | }\r | |
292 | }\r | |
ed66e0e3 | 293 | \r |
7b7508ad TL |
294 | /**\r |
295 | Get Protected mode code segment with 16-bit default addressing\r | |
296 | from current GDT table.\r | |
297 | \r | |
298 | @return Protected mode 16-bit code segment value.\r | |
299 | **/\r | |
300 | UINT16\r | |
301 | GetProtectedMode16CS (\r | |
302 | VOID\r | |
303 | )\r | |
304 | {\r | |
305 | IA32_DESCRIPTOR GdtrDesc;\r | |
306 | IA32_SEGMENT_DESCRIPTOR *GdtEntry;\r | |
307 | UINTN GdtEntryCount;\r | |
308 | UINT16 Index;\r | |
309 | \r | |
310 | Index = (UINT16) -1;\r | |
311 | AsmReadGdtr (&GdtrDesc);\r | |
312 | GdtEntryCount = (GdtrDesc.Limit + 1) / sizeof (IA32_SEGMENT_DESCRIPTOR);\r | |
313 | GdtEntry = (IA32_SEGMENT_DESCRIPTOR *) GdtrDesc.Base;\r | |
314 | for (Index = 0; Index < GdtEntryCount; Index++) {\r | |
315 | if (GdtEntry->Bits.L == 0) {\r | |
316 | if (GdtEntry->Bits.Type > 8 && GdtEntry->Bits.DB == 0) {\r | |
317 | break;\r | |
318 | }\r | |
319 | }\r | |
320 | GdtEntry++;\r | |
321 | }\r | |
322 | ASSERT (Index != GdtEntryCount);\r | |
323 | return Index * 8;\r | |
324 | }\r | |
325 | \r | |
4d3314f6 JF |
326 | /**\r |
327 | Get Protected mode code segment from current GDT table.\r | |
328 | \r | |
b31c1ad1 | 329 | @return Protected mode code segment value.\r |
4d3314f6 JF |
330 | **/\r |
331 | UINT16\r | |
332 | GetProtectedModeCS (\r | |
333 | VOID\r | |
334 | )\r | |
335 | {\r | |
336 | IA32_DESCRIPTOR GdtrDesc;\r | |
337 | IA32_SEGMENT_DESCRIPTOR *GdtEntry;\r | |
338 | UINTN GdtEntryCount;\r | |
339 | UINT16 Index;\r | |
340 | \r | |
4d3314f6 JF |
341 | AsmReadGdtr (&GdtrDesc);\r |
342 | GdtEntryCount = (GdtrDesc.Limit + 1) / sizeof (IA32_SEGMENT_DESCRIPTOR);\r | |
343 | GdtEntry = (IA32_SEGMENT_DESCRIPTOR *) GdtrDesc.Base;\r | |
344 | for (Index = 0; Index < GdtEntryCount; Index++) {\r | |
345 | if (GdtEntry->Bits.L == 0) {\r | |
7b7508ad | 346 | if (GdtEntry->Bits.Type > 8 && GdtEntry->Bits.DB == 1) {\r |
4d3314f6 JF |
347 | break;\r |
348 | }\r | |
349 | }\r | |
350 | GdtEntry++;\r | |
351 | }\r | |
37fba7c2 | 352 | ASSERT (Index != GdtEntryCount);\r |
4d3314f6 JF |
353 | return Index * 8;\r |
354 | }\r | |
355 | \r | |
356 | /**\r | |
357 | Do sync on APs.\r | |
358 | \r | |
359 | @param[in, out] Buffer Pointer to private data buffer.\r | |
360 | **/\r | |
361 | VOID\r | |
362 | EFIAPI\r | |
363 | RelocateApLoop (\r | |
364 | IN OUT VOID *Buffer\r | |
365 | )\r | |
366 | {\r | |
367 | CPU_MP_DATA *CpuMpData;\r | |
368 | BOOLEAN MwaitSupport;\r | |
369 | ASM_RELOCATE_AP_LOOP AsmRelocateApLoopFunc;\r | |
bf2786dc | 370 | UINTN ProcessorNumber;\r |
20da7ca4 | 371 | UINTN StackStart;\r |
4d3314f6 | 372 | \r |
7367cc6c | 373 | MpInitLibWhoAmI (&ProcessorNumber);\r |
4d3314f6 JF |
374 | CpuMpData = GetCpuMpData ();\r |
375 | MwaitSupport = IsMwaitSupport ();\r | |
20da7ca4 TL |
376 | if (CpuMpData->SevEsIsEnabled) {\r |
377 | StackStart = CpuMpData->SevEsAPResetStackStart;\r | |
378 | } else {\r | |
379 | StackStart = mReservedTopOfApStack;\r | |
380 | }\r | |
081f6416 | 381 | AsmRelocateApLoopFunc = (ASM_RELOCATE_AP_LOOP) (UINTN) mReservedApLoopFunc;\r |
bf2786dc JF |
382 | AsmRelocateApLoopFunc (\r |
383 | MwaitSupport,\r | |
384 | CpuMpData->ApTargetCState,\r | |
385 | CpuMpData->PmCodeSegment,\r | |
20da7ca4 TL |
386 | StackStart - ProcessorNumber * AP_SAFE_STACK_SIZE,\r |
387 | (UINTN) &mNumberToFinish,\r | |
388 | CpuMpData->Pm16CodeSegment,\r | |
389 | CpuMpData->SevEsAPBuffer,\r | |
390 | CpuMpData->WakeupBuffer\r | |
bf2786dc | 391 | );\r |
4d3314f6 JF |
392 | //\r |
393 | // It should never reach here\r | |
394 | //\r | |
395 | ASSERT (FALSE);\r | |
396 | }\r | |
397 | \r | |
398 | /**\r | |
399 | Callback function for ExitBootServices.\r | |
400 | \r | |
401 | @param[in] Event Event whose notification function is being invoked.\r | |
402 | @param[in] Context The pointer to the notification function's context,\r | |
403 | which is implementation-dependent.\r | |
404 | \r | |
405 | **/\r | |
406 | VOID\r | |
407 | EFIAPI\r | |
86af2eb8 | 408 | MpInitChangeApLoopCallback (\r |
4d3314f6 JF |
409 | IN EFI_EVENT Event,\r |
410 | IN VOID *Context\r | |
411 | )\r | |
412 | {\r | |
413 | CPU_MP_DATA *CpuMpData;\r | |
5183fb37 | 414 | \r |
4d3314f6 JF |
415 | CpuMpData = GetCpuMpData ();\r |
416 | CpuMpData->PmCodeSegment = GetProtectedModeCS ();\r | |
7b7508ad | 417 | CpuMpData->Pm16CodeSegment = GetProtectedMode16CS ();\r |
4d3314f6 | 418 | CpuMpData->ApLoopMode = PcdGet8 (PcdCpuApLoopMode);\r |
9f91cb01 | 419 | mNumberToFinish = CpuMpData->CpuCount - 1;\r |
cf4e79e4 | 420 | WakeUpAP (CpuMpData, TRUE, 0, RelocateApLoop, NULL, TRUE);\r |
9f91cb01 JF |
421 | while (mNumberToFinish > 0) {\r |
422 | CpuPause ();\r | |
423 | }\r | |
20da7ca4 TL |
424 | \r |
425 | if (CpuMpData->SevEsIsEnabled && (CpuMpData->WakeupBuffer != (UINTN) -1)) {\r | |
426 | //\r | |
427 | // There are APs present. Re-use reserved memory area below 1MB from\r | |
428 | // WakeupBuffer as the area to be used for transitioning to 16-bit mode\r | |
429 | // in support of booting of the AP by an OS.\r | |
430 | //\r | |
431 | CopyMem (\r | |
432 | (VOID *) CpuMpData->WakeupBuffer,\r | |
433 | (VOID *) (CpuMpData->AddressMap.RendezvousFunnelAddress +\r | |
434 | CpuMpData->AddressMap.SwitchToRealPM16ModeOffset),\r | |
435 | CpuMpData->AddressMap.SwitchToRealPM16ModeSize\r | |
436 | );\r | |
437 | }\r | |
438 | \r | |
86af2eb8 | 439 | DEBUG ((DEBUG_INFO, "%a() done!\n", __FUNCTION__));\r |
4d3314f6 JF |
440 | }\r |
441 | \r | |
93ca4c0f JF |
442 | /**\r |
443 | Initialize global data for MP support.\r | |
444 | \r | |
445 | @param[in] CpuMpData The pointer to CPU MP Data structure.\r | |
446 | **/\r | |
447 | VOID\r | |
448 | InitMpGlobalData (\r | |
449 | IN CPU_MP_DATA *CpuMpData\r | |
450 | )\r | |
451 | {\r | |
15720a6c JW |
452 | EFI_STATUS Status;\r |
453 | EFI_PHYSICAL_ADDRESS Address;\r | |
454 | UINTN ApSafeBufferSize;\r | |
455 | UINTN Index;\r | |
456 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;\r | |
457 | UINTN StackBase;\r | |
52315261 | 458 | CPU_INFO_IN_HOB *CpuInfoInHob;\r |
96378861 | 459 | \r |
93ca4c0f JF |
460 | SaveCpuMpData (CpuMpData);\r |
461 | \r | |
14e8137c JF |
462 | if (CpuMpData->CpuCount == 1) {\r |
463 | //\r | |
464 | // If only BSP exists, return\r | |
465 | //\r | |
466 | return;\r | |
467 | }\r | |
468 | \r | |
15720a6c JW |
469 | if (PcdGetBool (PcdCpuStackGuard)) {\r |
470 | //\r | |
471 | // One extra page at the bottom of the stack is needed for Guard page.\r | |
472 | //\r | |
473 | if (CpuMpData->CpuApStackSize <= EFI_PAGE_SIZE) {\r | |
474 | DEBUG ((DEBUG_ERROR, "PcdCpuApStackSize is not big enough for Stack Guard!\n"));\r | |
475 | ASSERT (FALSE);\r | |
476 | }\r | |
477 | \r | |
52315261 JW |
478 | //\r |
479 | // DXE will reuse stack allocated for APs at PEI phase if it's available.\r | |
480 | // Let's check it here.\r | |
481 | //\r | |
482 | // Note: BSP's stack guard is set at DxeIpl phase. But for the sake of\r | |
483 | // BSP/AP exchange, stack guard for ApTopOfStack of cpu 0 will still be\r | |
484 | // set here.\r | |
485 | //\r | |
486 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r | |
15720a6c | 487 | for (Index = 0; Index < CpuMpData->CpuCount; ++Index) {\r |
52315261 | 488 | if (CpuInfoInHob != NULL && CpuInfoInHob[Index].ApTopOfStack != 0) {\r |
20737c2f | 489 | StackBase = (UINTN)CpuInfoInHob[Index].ApTopOfStack - CpuMpData->CpuApStackSize;\r |
52315261 JW |
490 | } else {\r |
491 | StackBase = CpuMpData->Buffer + Index * CpuMpData->CpuApStackSize;\r | |
492 | }\r | |
15720a6c JW |
493 | \r |
494 | Status = gDS->GetMemorySpaceDescriptor (StackBase, &MemDesc);\r | |
495 | ASSERT_EFI_ERROR (Status);\r | |
496 | \r | |
497 | Status = gDS->SetMemorySpaceAttributes (\r | |
498 | StackBase,\r | |
499 | EFI_PAGES_TO_SIZE (1),\r | |
500 | MemDesc.Attributes | EFI_MEMORY_RP\r | |
501 | );\r | |
502 | ASSERT_EFI_ERROR (Status);\r | |
52315261 JW |
503 | \r |
504 | DEBUG ((DEBUG_INFO, "Stack Guard set at %lx [cpu%lu]!\n",\r | |
505 | (UINT64)StackBase, (UINT64)Index));\r | |
15720a6c JW |
506 | }\r |
507 | }\r | |
508 | \r | |
5183fb37 | 509 | //\r |
ffd6b0b1 JF |
510 | // Avoid APs access invalid buffer data which allocated by BootServices,\r |
511 | // so we will allocate reserved data for AP loop code. We also need to\r | |
512 | // allocate this buffer below 4GB due to APs may be transferred to 32bit\r | |
513 | // protected mode on long mode DXE.\r | |
5183fb37 JF |
514 | // Allocating it in advance since memory services are not available in\r |
515 | // Exit Boot Services callback function.\r | |
516 | //\r | |
bc2288f5 JW |
517 | ApSafeBufferSize = EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (\r |
518 | CpuMpData->AddressMap.RelocateApLoopFuncSize\r | |
519 | ));\r | |
ffd6b0b1 JF |
520 | Address = BASE_4GB - 1;\r |
521 | Status = gBS->AllocatePages (\r | |
522 | AllocateMaxAddress,\r | |
523 | EfiReservedMemoryType,\r | |
bf2786dc | 524 | EFI_SIZE_TO_PAGES (ApSafeBufferSize),\r |
ffd6b0b1 JF |
525 | &Address\r |
526 | );\r | |
527 | ASSERT_EFI_ERROR (Status);\r | |
bc2288f5 | 528 | \r |
ffd6b0b1 | 529 | mReservedApLoopFunc = (VOID *) (UINTN) Address;\r |
5183fb37 | 530 | ASSERT (mReservedApLoopFunc != NULL);\r |
bc2288f5 JW |
531 | \r |
532 | //\r | |
533 | // Make sure that the buffer memory is executable if NX protection is enabled\r | |
534 | // for EfiReservedMemoryType.\r | |
7367cc6c | 535 | //\r |
bc2288f5 JW |
536 | // TODO: Check EFI_MEMORY_XP bit set or not once it's available in DXE GCD\r |
537 | // service.\r | |
538 | //\r | |
539 | Status = gDS->GetMemorySpaceDescriptor (Address, &MemDesc);\r | |
540 | if (!EFI_ERROR (Status)) {\r | |
541 | gDS->SetMemorySpaceAttributes (\r | |
542 | Address,\r | |
543 | ApSafeBufferSize,\r | |
544 | MemDesc.Attributes & (~EFI_MEMORY_XP)\r | |
545 | );\r | |
546 | }\r | |
547 | \r | |
548 | ApSafeBufferSize = EFI_PAGES_TO_SIZE (EFI_SIZE_TO_PAGES (\r | |
549 | CpuMpData->CpuCount * AP_SAFE_STACK_SIZE\r | |
550 | ));\r | |
551 | Address = BASE_4GB - 1;\r | |
552 | Status = gBS->AllocatePages (\r | |
553 | AllocateMaxAddress,\r | |
554 | EfiReservedMemoryType,\r | |
555 | EFI_SIZE_TO_PAGES (ApSafeBufferSize),\r | |
556 | &Address\r | |
557 | );\r | |
558 | ASSERT_EFI_ERROR (Status);\r | |
559 | \r | |
560 | mReservedTopOfApStack = (UINTN) Address + ApSafeBufferSize;\r | |
bf2786dc | 561 | ASSERT ((mReservedTopOfApStack & (UINTN)(CPU_STACK_ALIGNMENT - 1)) == 0);\r |
ffd6b0b1 JF |
562 | CopyMem (\r |
563 | mReservedApLoopFunc,\r | |
564 | CpuMpData->AddressMap.RelocateApLoopFuncAddress,\r | |
565 | CpuMpData->AddressMap.RelocateApLoopFuncSize\r | |
566 | );\r | |
5183fb37 | 567 | \r |
96378861 JF |
568 | Status = gBS->CreateEvent (\r |
569 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
570 | TPL_NOTIFY,\r | |
571 | CheckApsStatus,\r | |
572 | NULL,\r | |
573 | &mCheckAllApsEvent\r | |
574 | );\r | |
575 | ASSERT_EFI_ERROR (Status);\r | |
576 | \r | |
577 | //\r | |
578 | // Set timer to check all APs status.\r | |
579 | //\r | |
580 | Status = gBS->SetTimer (\r | |
581 | mCheckAllApsEvent,\r | |
582 | TimerPeriodic,\r | |
a1c35ff3 HW |
583 | EFI_TIMER_PERIOD_MICROSECONDS (\r |
584 | PcdGet32 (PcdCpuApStatusCheckIntervalInMicroSeconds)\r | |
585 | )\r | |
96378861 JF |
586 | );\r |
587 | ASSERT_EFI_ERROR (Status);\r | |
8677a56a | 588 | \r |
4d3314f6 JF |
589 | Status = gBS->CreateEvent (\r |
590 | EVT_SIGNAL_EXIT_BOOT_SERVICES,\r | |
591 | TPL_CALLBACK,\r | |
86af2eb8 | 592 | MpInitChangeApLoopCallback,\r |
4d3314f6 JF |
593 | NULL,\r |
594 | &mMpInitExitBootServicesEvent\r | |
595 | );\r | |
596 | ASSERT_EFI_ERROR (Status);\r | |
8677a56a JF |
597 | \r |
598 | Status = gBS->CreateEventEx (\r | |
599 | EVT_NOTIFY_SIGNAL,\r | |
600 | TPL_CALLBACK,\r | |
601 | MpInitChangeApLoopCallback,\r | |
602 | NULL,\r | |
603 | &gEfiEventLegacyBootGuid,\r | |
604 | &mLegacyBootEvent\r | |
605 | );\r | |
606 | ASSERT_EFI_ERROR (Status);\r | |
93ca4c0f | 607 | }\r |
3e8ad6bd JF |
608 | \r |
609 | /**\r | |
610 | This service executes a caller provided function on all enabled APs.\r | |
611 | \r | |
612 | @param[in] Procedure A pointer to the function to be run on\r | |
613 | enabled APs of the system. See type\r | |
614 | EFI_AP_PROCEDURE.\r | |
615 | @param[in] SingleThread If TRUE, then all the enabled APs execute\r | |
616 | the function specified by Procedure one by\r | |
617 | one, in ascending order of processor handle\r | |
618 | number. If FALSE, then all the enabled APs\r | |
619 | execute the function specified by Procedure\r | |
620 | simultaneously.\r | |
621 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
622 | service. If it is NULL, then execute in\r | |
623 | blocking mode. BSP waits until all APs finish\r | |
624 | or TimeoutInMicroSeconds expires. If it's\r | |
625 | not NULL, then execute in non-blocking mode.\r | |
626 | BSP requests the function specified by\r | |
627 | Procedure to be started on all the enabled\r | |
628 | APs, and go on executing immediately. If\r | |
629 | all return from Procedure, or TimeoutInMicroSeconds\r | |
630 | expires, this event is signaled. The BSP\r | |
631 | can use the CheckEvent() or WaitForEvent()\r | |
632 | services to check the state of event. Type\r | |
633 | EFI_EVENT is defined in CreateEvent() in\r | |
634 | the Unified Extensible Firmware Interface\r | |
635 | Specification.\r | |
367284e7 | 636 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
3e8ad6bd JF |
637 | APs to return from Procedure, either for\r |
638 | blocking or non-blocking mode. Zero means\r | |
639 | infinity. If the timeout expires before\r | |
640 | all APs return from Procedure, then Procedure\r | |
641 | on the failed APs is terminated. All enabled\r | |
642 | APs are available for next function assigned\r | |
643 | by MpInitLibStartupAllAPs() or\r | |
644 | MPInitLibStartupThisAP().\r | |
645 | If the timeout expires in blocking mode,\r | |
646 | BSP returns EFI_TIMEOUT. If the timeout\r | |
647 | expires in non-blocking mode, WaitEvent\r | |
648 | is signaled with SignalEvent().\r | |
649 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
650 | all APs.\r | |
651 | @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,\r | |
652 | if all APs finish successfully, then its\r | |
653 | content is set to NULL. If not all APs\r | |
654 | finish before timeout expires, then its\r | |
655 | content is set to address of the buffer\r | |
656 | holding handle numbers of the failed APs.\r | |
657 | The buffer is allocated by MP Initialization\r | |
658 | library, and it's the caller's responsibility to\r | |
659 | free the buffer with FreePool() service.\r | |
660 | In blocking mode, it is ready for consumption\r | |
661 | when the call returns. In non-blocking mode,\r | |
662 | it is ready when WaitEvent is signaled. The\r | |
663 | list of failed CPU is terminated by\r | |
664 | END_OF_CPU_LIST.\r | |
665 | \r | |
666 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r | |
667 | the timeout expired.\r | |
668 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r | |
669 | to all enabled APs.\r | |
670 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
671 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
672 | signaled.\r | |
673 | @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not\r | |
674 | supported.\r | |
675 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
676 | @retval EFI_NOT_STARTED No enabled APs exist in the system.\r | |
677 | @retval EFI_NOT_READY Any enabled APs are busy.\r | |
678 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
679 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
680 | all enabled APs have finished.\r | |
681 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
682 | \r | |
683 | **/\r | |
684 | EFI_STATUS\r | |
685 | EFIAPI\r | |
686 | MpInitLibStartupAllAPs (\r | |
687 | IN EFI_AP_PROCEDURE Procedure,\r | |
688 | IN BOOLEAN SingleThread,\r | |
689 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
690 | IN UINTN TimeoutInMicroseconds,\r | |
691 | IN VOID *ProcedureArgument OPTIONAL,\r | |
692 | OUT UINTN **FailedCpuList OPTIONAL\r | |
693 | )\r | |
694 | {\r | |
86efe976 JF |
695 | EFI_STATUS Status;\r |
696 | \r | |
697 | //\r | |
698 | // Temporarily stop checkAllApsStatus for avoid resource dead-lock.\r | |
699 | //\r | |
700 | mStopCheckAllApsStatus = TRUE;\r | |
701 | \r | |
ee0c39fa | 702 | Status = StartupAllCPUsWorker (\r |
86efe976 JF |
703 | Procedure,\r |
704 | SingleThread,\r | |
ee0c39fa | 705 | TRUE,\r |
86efe976 JF |
706 | WaitEvent,\r |
707 | TimeoutInMicroseconds,\r | |
708 | ProcedureArgument,\r | |
709 | FailedCpuList\r | |
710 | );\r | |
711 | \r | |
712 | //\r | |
713 | // Start checkAllApsStatus\r | |
714 | //\r | |
715 | mStopCheckAllApsStatus = FALSE;\r | |
716 | \r | |
717 | return Status;\r | |
3e8ad6bd JF |
718 | }\r |
719 | \r | |
720 | /**\r | |
721 | This service lets the caller get one enabled AP to execute a caller-provided\r | |
722 | function.\r | |
723 | \r | |
724 | @param[in] Procedure A pointer to the function to be run on the\r | |
725 | designated AP of the system. See type\r | |
726 | EFI_AP_PROCEDURE.\r | |
727 | @param[in] ProcessorNumber The handle number of the AP. The range is\r | |
728 | from 0 to the total number of logical\r | |
729 | processors minus 1. The total number of\r | |
730 | logical processors can be retrieved by\r | |
731 | MpInitLibGetNumberOfProcessors().\r | |
732 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
733 | service. If it is NULL, then execute in\r | |
734 | blocking mode. BSP waits until this AP finish\r | |
735 | or TimeoutInMicroSeconds expires. If it's\r | |
736 | not NULL, then execute in non-blocking mode.\r | |
737 | BSP requests the function specified by\r | |
738 | Procedure to be started on this AP,\r | |
739 | and go on executing immediately. If this AP\r | |
740 | return from Procedure or TimeoutInMicroSeconds\r | |
741 | expires, this event is signaled. The BSP\r | |
742 | can use the CheckEvent() or WaitForEvent()\r | |
743 | services to check the state of event. Type\r | |
744 | EFI_EVENT is defined in CreateEvent() in\r | |
745 | the Unified Extensible Firmware Interface\r | |
746 | Specification.\r | |
367284e7 | 747 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
3e8ad6bd JF |
748 | this AP to finish this Procedure, either for\r |
749 | blocking or non-blocking mode. Zero means\r | |
750 | infinity. If the timeout expires before\r | |
751 | this AP returns from Procedure, then Procedure\r | |
752 | on the AP is terminated. The\r | |
753 | AP is available for next function assigned\r | |
754 | by MpInitLibStartupAllAPs() or\r | |
755 | MpInitLibStartupThisAP().\r | |
756 | If the timeout expires in blocking mode,\r | |
757 | BSP returns EFI_TIMEOUT. If the timeout\r | |
758 | expires in non-blocking mode, WaitEvent\r | |
759 | is signaled with SignalEvent().\r | |
760 | @param[in] ProcedureArgument The parameter passed into Procedure on the\r | |
761 | specified AP.\r | |
762 | @param[out] Finished If NULL, this parameter is ignored. In\r | |
763 | blocking mode, this parameter is ignored.\r | |
764 | In non-blocking mode, if AP returns from\r | |
765 | Procedure before the timeout expires, its\r | |
766 | content is set to TRUE. Otherwise, the\r | |
767 | value is set to FALSE. The caller can\r | |
768 | determine if the AP returned from Procedure\r | |
769 | by evaluating this value.\r | |
770 | \r | |
771 | @retval EFI_SUCCESS In blocking mode, specified AP finished before\r | |
772 | the timeout expires.\r | |
773 | @retval EFI_SUCCESS In non-blocking mode, the function has been\r | |
774 | dispatched to specified AP.\r | |
775 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
776 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
777 | signaled.\r | |
778 | @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not\r | |
779 | supported.\r | |
780 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
781 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
782 | the specified AP has finished.\r | |
783 | @retval EFI_NOT_READY The specified AP is busy.\r | |
784 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
785 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
786 | ProcessorNumber does not exist.\r | |
787 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
788 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
789 | \r | |
790 | **/\r | |
791 | EFI_STATUS\r | |
792 | EFIAPI\r | |
793 | MpInitLibStartupThisAP (\r | |
794 | IN EFI_AP_PROCEDURE Procedure,\r | |
795 | IN UINTN ProcessorNumber,\r | |
796 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
797 | IN UINTN TimeoutInMicroseconds,\r | |
798 | IN VOID *ProcedureArgument OPTIONAL,\r | |
799 | OUT BOOLEAN *Finished OPTIONAL\r | |
800 | )\r | |
801 | {\r | |
20ae5774 JF |
802 | EFI_STATUS Status;\r |
803 | \r | |
804 | //\r | |
805 | // temporarily stop checkAllApsStatus for avoid resource dead-lock.\r | |
806 | //\r | |
807 | mStopCheckAllApsStatus = TRUE;\r | |
808 | \r | |
809 | Status = StartupThisAPWorker (\r | |
810 | Procedure,\r | |
811 | ProcessorNumber,\r | |
812 | WaitEvent,\r | |
813 | TimeoutInMicroseconds,\r | |
814 | ProcedureArgument,\r | |
815 | Finished\r | |
816 | );\r | |
817 | \r | |
818 | mStopCheckAllApsStatus = FALSE;\r | |
819 | \r | |
820 | return Status;\r | |
3e8ad6bd JF |
821 | }\r |
822 | \r | |
823 | /**\r | |
824 | This service switches the requested AP to be the BSP from that point onward.\r | |
825 | This service changes the BSP for all purposes. This call can only be performed\r | |
826 | by the current BSP.\r | |
827 | \r | |
828 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r | |
829 | BSP. The range is from 0 to the total number of\r | |
830 | logical processors minus 1. The total number of\r | |
831 | logical processors can be retrieved by\r | |
832 | MpInitLibGetNumberOfProcessors().\r | |
833 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r | |
834 | enabled AP. Otherwise, it will be disabled.\r | |
835 | \r | |
836 | @retval EFI_SUCCESS BSP successfully switched.\r | |
837 | @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to\r | |
838 | this service returning.\r | |
839 | @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r | |
840 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
841 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
842 | ProcessorNumber does not exist.\r | |
843 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or\r | |
844 | a disabled AP.\r | |
845 | @retval EFI_NOT_READY The specified AP is busy.\r | |
846 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
847 | \r | |
848 | **/\r | |
849 | EFI_STATUS\r | |
850 | EFIAPI\r | |
851 | MpInitLibSwitchBSP (\r | |
852 | IN UINTN ProcessorNumber,\r | |
853 | IN BOOLEAN EnableOldBSP\r | |
854 | )\r | |
855 | {\r | |
b6e45716 JF |
856 | EFI_STATUS Status;\r |
857 | EFI_TIMER_ARCH_PROTOCOL *Timer;\r | |
858 | UINT64 TimerPeriod;\r | |
41be0da5 | 859 | \r |
8ad05bd2 | 860 | TimerPeriod = 0;\r |
b6e45716 JF |
861 | //\r |
862 | // Locate Timer Arch Protocol\r | |
863 | //\r | |
864 | Status = gBS->LocateProtocol (&gEfiTimerArchProtocolGuid, NULL, (VOID **) &Timer);\r | |
865 | if (EFI_ERROR (Status)) {\r | |
866 | Timer = NULL;\r | |
867 | }\r | |
868 | \r | |
869 | if (Timer != NULL) {\r | |
870 | //\r | |
871 | // Save current rate of DXE Timer\r | |
872 | //\r | |
873 | Timer->GetTimerPeriod (Timer, &TimerPeriod);\r | |
874 | //\r | |
875 | // Disable DXE Timer and drain pending interrupts\r | |
876 | //\r | |
877 | Timer->SetTimerPeriod (Timer, 0);\r | |
878 | }\r | |
41be0da5 JF |
879 | \r |
880 | Status = SwitchBSPWorker (ProcessorNumber, EnableOldBSP);\r | |
881 | \r | |
b6e45716 JF |
882 | if (Timer != NULL) {\r |
883 | //\r | |
884 | // Enable and restore rate of DXE Timer\r | |
885 | //\r | |
886 | Timer->SetTimerPeriod (Timer, TimerPeriod);\r | |
887 | }\r | |
888 | \r | |
41be0da5 | 889 | return Status;\r |
3e8ad6bd JF |
890 | }\r |
891 | \r | |
892 | /**\r | |
893 | This service lets the caller enable or disable an AP from this point onward.\r | |
894 | This service may only be called from the BSP.\r | |
895 | \r | |
896 | @param[in] ProcessorNumber The handle number of AP.\r | |
897 | The range is from 0 to the total number of\r | |
898 | logical processors minus 1. The total number of\r | |
899 | logical processors can be retrieved by\r | |
900 | MpInitLibGetNumberOfProcessors().\r | |
901 | @param[in] EnableAP Specifies the new state for the processor for\r | |
902 | enabled, FALSE for disabled.\r | |
903 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies\r | |
904 | the new health status of the AP. This flag\r | |
905 | corresponds to StatusFlag defined in\r | |
906 | EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only\r | |
907 | the PROCESSOR_HEALTH_STATUS_BIT is used. All other\r | |
908 | bits are ignored. If it is NULL, this parameter\r | |
909 | is ignored.\r | |
910 | \r | |
911 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
912 | @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed\r | |
913 | prior to this service returning.\r | |
914 | @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.\r | |
915 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
916 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber\r | |
917 | does not exist.\r | |
918 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.\r | |
919 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
920 | \r | |
921 | **/\r | |
922 | EFI_STATUS\r | |
923 | EFIAPI\r | |
924 | MpInitLibEnableDisableAP (\r | |
925 | IN UINTN ProcessorNumber,\r | |
926 | IN BOOLEAN EnableAP,\r | |
927 | IN UINT32 *HealthFlag OPTIONAL\r | |
928 | )\r | |
929 | {\r | |
e37109bc JF |
930 | EFI_STATUS Status;\r |
931 | BOOLEAN TempStopCheckState;\r | |
932 | \r | |
933 | TempStopCheckState = FALSE;\r | |
934 | //\r | |
935 | // temporarily stop checkAllAPsStatus for initialize parameters.\r | |
936 | //\r | |
937 | if (!mStopCheckAllApsStatus) {\r | |
938 | mStopCheckAllApsStatus = TRUE;\r | |
939 | TempStopCheckState = TRUE;\r | |
940 | }\r | |
941 | \r | |
942 | Status = EnableDisableApWorker (ProcessorNumber, EnableAP, HealthFlag);\r | |
943 | \r | |
944 | if (TempStopCheckState) {\r | |
945 | mStopCheckAllApsStatus = FALSE;\r | |
946 | }\r | |
947 | \r | |
948 | return Status;\r | |
3e8ad6bd | 949 | }\r |
c788c2b1 SF |
950 | \r |
951 | /**\r | |
952 | This funtion will try to invoke platform specific microcode shadow logic to\r | |
953 | relocate microcode update patches into memory.\r | |
954 | \r | |
4ac82ea1 | 955 | @param[in, out] CpuMpData The pointer to CPU MP Data structure.\r |
c788c2b1 SF |
956 | \r |
957 | @retval EFI_SUCCESS Shadow microcode success.\r | |
958 | @retval EFI_OUT_OF_RESOURCES No enough resource to complete the operation.\r | |
959 | @retval EFI_UNSUPPORTED Can't find platform specific microcode shadow\r | |
960 | PPI/Protocol.\r | |
961 | **/\r | |
962 | EFI_STATUS\r | |
963 | PlatformShadowMicrocode (\r | |
964 | IN OUT CPU_MP_DATA *CpuMpData\r | |
965 | )\r | |
966 | {\r | |
967 | //\r | |
968 | // There is no DXE version of platform shadow microcode protocol so far.\r | |
969 | // A platform which only uses DxeMpInitLib instance could only supports\r | |
970 | // the PCD based microcode shadowing.\r | |
971 | //\r | |
972 | return EFI_UNSUPPORTED;\r | |
973 | }\r |