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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 | |
a6f799e7 | 4 | Copyright (c) 2016 - 2023, 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 |
a89f558d | 15 | #include <Library/CcExitLib.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 | |
053e878b | 21 | #define AP_SAFE_STACK_SIZE 128\r |
96378861 | 22 | \r |
a6f799e7 XY |
23 | CPU_MP_DATA *mCpuMpData = NULL;\r |
24 | EFI_EVENT mCheckAllApsEvent = NULL;\r | |
25 | EFI_EVENT mMpInitExitBootServicesEvent = NULL;\r | |
26 | EFI_EVENT mLegacyBootEvent = NULL;\r | |
27 | volatile BOOLEAN mStopCheckAllApsStatus = TRUE;\r | |
28 | RELOCATE_AP_LOOP_ENTRY mReservedApLoop;\r | |
29 | UINTN mReservedTopOfApStack;\r | |
30 | volatile UINT32 mNumberToFinish = 0;\r | |
93ca4c0f | 31 | \r |
dbc22a17 TL |
32 | //\r |
33 | // Begin wakeup buffer allocation below 0x88000\r | |
34 | //\r | |
053e878b | 35 | STATIC EFI_PHYSICAL_ADDRESS mSevEsDxeWakeupBuffer = 0x88000;\r |
dbc22a17 | 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 | |
053e878b | 73 | IN CPU_MP_DATA *CpuMpData\r |
93ca4c0f JF |
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 | |
053e878b | 89 | IN UINTN WakeupBufferSize\r |
ed66e0e3 JF |
90 | )\r |
91 | {\r | |
053e878b MK |
92 | EFI_STATUS Status;\r |
93 | EFI_PHYSICAL_ADDRESS StartAddress;\r | |
94 | EFI_MEMORY_TYPE MemoryType;\r | |
20da7ca4 | 95 | \r |
06544455 TL |
96 | if (ConfidentialComputingGuestHas (CCAttrAmdSevEs) &&\r |
97 | !ConfidentialComputingGuestHas (CCAttrAmdSevSnp))\r | |
98 | {\r | |
99 | //\r | |
100 | // An SEV-ES-only guest requires the memory to be reserved. SEV-SNP, which\r | |
101 | // is also considered SEV-ES, uses a different AP startup method, though,\r | |
102 | // which does not have the same requirement.\r | |
103 | //\r | |
20da7ca4 TL |
104 | MemoryType = EfiReservedMemoryType;\r |
105 | } else {\r | |
106 | MemoryType = EfiBootServicesData;\r | |
107 | }\r | |
a6b3d753 | 108 | \r |
e4ff6349 ED |
109 | //\r |
110 | // Try to allocate buffer below 1M for waking vector.\r | |
111 | // LegacyBios driver only reports warning when page allocation in range\r | |
112 | // [0x60000, 0x88000) fails.\r | |
113 | // This library is consumed by CpuDxe driver to produce CPU Arch protocol.\r | |
114 | // LagacyBios driver depends on CPU Arch protocol which guarantees below\r | |
115 | // allocation runs earlier than LegacyBios driver.\r | |
116 | //\r | |
b95908e0 | 117 | if (ConfidentialComputingGuestHas (CCAttrAmdSevEs)) {\r |
dbc22a17 TL |
118 | //\r |
119 | // SEV-ES Wakeup buffer should be under 0x88000 and under any previous one\r | |
120 | //\r | |
121 | StartAddress = mSevEsDxeWakeupBuffer;\r | |
122 | } else {\r | |
123 | StartAddress = 0x88000;\r | |
124 | }\r | |
053e878b | 125 | \r |
a6b3d753 SZ |
126 | Status = gBS->AllocatePages (\r |
127 | AllocateMaxAddress,\r | |
20da7ca4 | 128 | MemoryType,\r |
a6b3d753 SZ |
129 | EFI_SIZE_TO_PAGES (WakeupBufferSize),\r |
130 | &StartAddress\r | |
131 | );\r | |
132 | ASSERT_EFI_ERROR (Status);\r | |
e4ff6349 | 133 | if (EFI_ERROR (Status)) {\r |
053e878b | 134 | StartAddress = (EFI_PHYSICAL_ADDRESS)-1;\r |
b95908e0 | 135 | } else if (ConfidentialComputingGuestHas (CCAttrAmdSevEs)) {\r |
dbc22a17 TL |
136 | //\r |
137 | // Next SEV-ES wakeup buffer allocation must be below this allocation\r | |
138 | //\r | |
139 | mSevEsDxeWakeupBuffer = StartAddress;\r | |
3ed4e502 | 140 | }\r |
e4ff6349 | 141 | \r |
053e878b MK |
142 | DEBUG ((\r |
143 | DEBUG_INFO,\r | |
144 | "WakeupBufferStart = %x, WakeupBufferSize = %x\n",\r | |
145 | (UINTN)StartAddress,\r | |
146 | WakeupBufferSize\r | |
147 | ));\r | |
e4ff6349 | 148 | \r |
053e878b | 149 | return (UINTN)StartAddress;\r |
ed66e0e3 JF |
150 | }\r |
151 | \r | |
f32bfe6d JW |
152 | /**\r |
153 | Get available EfiBootServicesCode memory below 4GB by specified size.\r | |
154 | \r | |
155 | This buffer is required to safely transfer AP from real address mode to\r | |
156 | protected mode or long mode, due to the fact that the buffer returned by\r | |
157 | GetWakeupBuffer() may be marked as non-executable.\r | |
158 | \r | |
159 | @param[in] BufferSize Wakeup transition buffer size.\r | |
160 | \r | |
161 | @retval other Return wakeup transition buffer address below 4GB.\r | |
162 | @retval 0 Cannot find free memory below 4GB.\r | |
163 | **/\r | |
164 | UINTN\r | |
54aeed7e | 165 | AllocateCodeBuffer (\r |
053e878b | 166 | IN UINTN BufferSize\r |
f32bfe6d JW |
167 | )\r |
168 | {\r | |
053e878b MK |
169 | EFI_STATUS Status;\r |
170 | EFI_PHYSICAL_ADDRESS StartAddress;\r | |
f32bfe6d JW |
171 | \r |
172 | StartAddress = BASE_4GB - 1;\r | |
053e878b MK |
173 | Status = gBS->AllocatePages (\r |
174 | AllocateMaxAddress,\r | |
175 | EfiBootServicesCode,\r | |
176 | EFI_SIZE_TO_PAGES (BufferSize),\r | |
177 | &StartAddress\r | |
178 | );\r | |
f32bfe6d JW |
179 | if (EFI_ERROR (Status)) {\r |
180 | StartAddress = 0;\r | |
181 | }\r | |
182 | \r | |
183 | return (UINTN)StartAddress;\r | |
184 | }\r | |
185 | \r | |
7b7508ad TL |
186 | /**\r |
187 | Return the address of the SEV-ES AP jump table.\r | |
188 | \r | |
189 | This buffer is required in order for an SEV-ES guest to transition from\r | |
190 | UEFI into an OS.\r | |
191 | \r | |
192 | @return Return SEV-ES AP jump table buffer\r | |
193 | **/\r | |
194 | UINTN\r | |
195 | GetSevEsAPMemory (\r | |
196 | VOID\r | |
197 | )\r | |
198 | {\r | |
20da7ca4 TL |
199 | EFI_STATUS Status;\r |
200 | EFI_PHYSICAL_ADDRESS StartAddress;\r | |
201 | MSR_SEV_ES_GHCB_REGISTER Msr;\r | |
202 | GHCB *Ghcb;\r | |
1b0db1ec | 203 | BOOLEAN InterruptState;\r |
7b7508ad TL |
204 | \r |
205 | //\r | |
206 | // Allocate 1 page for AP jump table page\r | |
207 | //\r | |
208 | StartAddress = BASE_4GB - 1;\r | |
053e878b MK |
209 | Status = gBS->AllocatePages (\r |
210 | AllocateMaxAddress,\r | |
211 | EfiReservedMemoryType,\r | |
212 | 1,\r | |
213 | &StartAddress\r | |
214 | );\r | |
7b7508ad TL |
215 | ASSERT_EFI_ERROR (Status);\r |
216 | \r | |
053e878b | 217 | DEBUG ((DEBUG_INFO, "Dxe: SevEsAPMemory = %lx\n", (UINTN)StartAddress));\r |
7b7508ad | 218 | \r |
20da7ca4 TL |
219 | //\r |
220 | // Save the SevEsAPMemory as the AP jump table.\r | |
221 | //\r | |
222 | Msr.GhcbPhysicalAddress = AsmReadMsr64 (MSR_SEV_ES_GHCB);\r | |
053e878b | 223 | Ghcb = Msr.Ghcb;\r |
20da7ca4 | 224 | \r |
765ba5bf MX |
225 | CcExitVmgInit (Ghcb, &InterruptState);\r |
226 | CcExitVmgExit (Ghcb, SVM_EXIT_AP_JUMP_TABLE, 0, (UINT64)(UINTN)StartAddress);\r | |
227 | CcExitVmgDone (Ghcb, InterruptState);\r | |
20da7ca4 | 228 | \r |
053e878b | 229 | return (UINTN)StartAddress;\r |
7b7508ad TL |
230 | }\r |
231 | \r | |
96378861 JF |
232 | /**\r |
233 | Checks APs status and updates APs status if needed.\r | |
234 | \r | |
235 | **/\r | |
236 | VOID\r | |
237 | CheckAndUpdateApsStatus (\r | |
238 | VOID\r | |
239 | )\r | |
240 | {\r | |
053e878b MK |
241 | UINTN ProcessorNumber;\r |
242 | EFI_STATUS Status;\r | |
243 | CPU_MP_DATA *CpuMpData;\r | |
08085f08 JF |
244 | \r |
245 | CpuMpData = GetCpuMpData ();\r | |
246 | \r | |
247 | //\r | |
248 | // First, check whether pending StartupAllAPs() exists.\r | |
249 | //\r | |
250 | if (CpuMpData->WaitEvent != NULL) {\r | |
08085f08 JF |
251 | Status = CheckAllAPs ();\r |
252 | //\r | |
253 | // If all APs finish for StartupAllAPs(), signal the WaitEvent for it.\r | |
254 | //\r | |
255 | if (Status != EFI_NOT_READY) {\r | |
053e878b | 256 | Status = gBS->SignalEvent (CpuMpData->WaitEvent);\r |
08085f08 JF |
257 | CpuMpData->WaitEvent = NULL;\r |
258 | }\r | |
259 | }\r | |
260 | \r | |
261 | //\r | |
262 | // Second, check whether pending StartupThisAPs() callings exist.\r | |
263 | //\r | |
264 | for (ProcessorNumber = 0; ProcessorNumber < CpuMpData->CpuCount; ProcessorNumber++) {\r | |
08085f08 JF |
265 | if (CpuMpData->CpuData[ProcessorNumber].WaitEvent == NULL) {\r |
266 | continue;\r | |
267 | }\r | |
268 | \r | |
269 | Status = CheckThisAP (ProcessorNumber);\r | |
270 | \r | |
271 | if (Status != EFI_NOT_READY) {\r | |
272 | gBS->SignalEvent (CpuMpData->CpuData[ProcessorNumber].WaitEvent);\r | |
053e878b | 273 | CpuMpData->CpuData[ProcessorNumber].WaitEvent = NULL;\r |
08085f08 JF |
274 | }\r |
275 | }\r | |
96378861 JF |
276 | }\r |
277 | \r | |
278 | /**\r | |
279 | Checks APs' status periodically.\r | |
280 | \r | |
438f1766 | 281 | This function is triggered by timer periodically to check the\r |
96378861 JF |
282 | state of APs for StartupAllAPs() and StartupThisAP() executed\r |
283 | in non-blocking mode.\r | |
284 | \r | |
285 | @param[in] Event Event triggered.\r | |
286 | @param[in] Context Parameter passed with the event.\r | |
287 | \r | |
288 | **/\r | |
289 | VOID\r | |
290 | EFIAPI\r | |
291 | CheckApsStatus (\r | |
053e878b MK |
292 | IN EFI_EVENT Event,\r |
293 | IN VOID *Context\r | |
96378861 JF |
294 | )\r |
295 | {\r | |
296 | //\r | |
297 | // If CheckApsStatus() is not stopped, otherwise return immediately.\r | |
298 | //\r | |
299 | if (!mStopCheckAllApsStatus) {\r | |
300 | CheckAndUpdateApsStatus ();\r | |
301 | }\r | |
302 | }\r | |
ed66e0e3 | 303 | \r |
7b7508ad TL |
304 | /**\r |
305 | Get Protected mode code segment with 16-bit default addressing\r | |
306 | from current GDT table.\r | |
307 | \r | |
308 | @return Protected mode 16-bit code segment value.\r | |
309 | **/\r | |
310 | UINT16\r | |
311 | GetProtectedMode16CS (\r | |
312 | VOID\r | |
313 | )\r | |
314 | {\r | |
315 | IA32_DESCRIPTOR GdtrDesc;\r | |
316 | IA32_SEGMENT_DESCRIPTOR *GdtEntry;\r | |
317 | UINTN GdtEntryCount;\r | |
318 | UINT16 Index;\r | |
319 | \r | |
053e878b | 320 | Index = (UINT16)-1;\r |
7b7508ad TL |
321 | AsmReadGdtr (&GdtrDesc);\r |
322 | GdtEntryCount = (GdtrDesc.Limit + 1) / sizeof (IA32_SEGMENT_DESCRIPTOR);\r | |
053e878b | 323 | GdtEntry = (IA32_SEGMENT_DESCRIPTOR *)GdtrDesc.Base;\r |
7b7508ad TL |
324 | for (Index = 0; Index < GdtEntryCount; Index++) {\r |
325 | if (GdtEntry->Bits.L == 0) {\r | |
053e878b | 326 | if ((GdtEntry->Bits.Type > 8) && (GdtEntry->Bits.DB == 0)) {\r |
7b7508ad TL |
327 | break;\r |
328 | }\r | |
329 | }\r | |
053e878b | 330 | \r |
7b7508ad TL |
331 | GdtEntry++;\r |
332 | }\r | |
053e878b | 333 | \r |
7b7508ad TL |
334 | ASSERT (Index != GdtEntryCount);\r |
335 | return Index * 8;\r | |
336 | }\r | |
337 | \r | |
4d3314f6 JF |
338 | /**\r |
339 | Get Protected mode code segment from current GDT table.\r | |
340 | \r | |
b31c1ad1 | 341 | @return Protected mode code segment value.\r |
4d3314f6 JF |
342 | **/\r |
343 | UINT16\r | |
344 | GetProtectedModeCS (\r | |
345 | VOID\r | |
346 | )\r | |
347 | {\r | |
348 | IA32_DESCRIPTOR GdtrDesc;\r | |
349 | IA32_SEGMENT_DESCRIPTOR *GdtEntry;\r | |
350 | UINTN GdtEntryCount;\r | |
351 | UINT16 Index;\r | |
352 | \r | |
4d3314f6 JF |
353 | AsmReadGdtr (&GdtrDesc);\r |
354 | GdtEntryCount = (GdtrDesc.Limit + 1) / sizeof (IA32_SEGMENT_DESCRIPTOR);\r | |
053e878b | 355 | GdtEntry = (IA32_SEGMENT_DESCRIPTOR *)GdtrDesc.Base;\r |
4d3314f6 JF |
356 | for (Index = 0; Index < GdtEntryCount; Index++) {\r |
357 | if (GdtEntry->Bits.L == 0) {\r | |
053e878b | 358 | if ((GdtEntry->Bits.Type > 8) && (GdtEntry->Bits.DB == 1)) {\r |
4d3314f6 JF |
359 | break;\r |
360 | }\r | |
361 | }\r | |
053e878b | 362 | \r |
4d3314f6 JF |
363 | GdtEntry++;\r |
364 | }\r | |
053e878b | 365 | \r |
37fba7c2 | 366 | ASSERT (Index != GdtEntryCount);\r |
4d3314f6 JF |
367 | return Index * 8;\r |
368 | }\r | |
369 | \r | |
370 | /**\r | |
371 | Do sync on APs.\r | |
372 | \r | |
373 | @param[in, out] Buffer Pointer to private data buffer.\r | |
374 | **/\r | |
375 | VOID\r | |
376 | EFIAPI\r | |
377 | RelocateApLoop (\r | |
378 | IN OUT VOID *Buffer\r | |
379 | )\r | |
380 | {\r | |
a6f799e7 XY |
381 | CPU_MP_DATA *CpuMpData;\r |
382 | BOOLEAN MwaitSupport;\r | |
383 | UINTN ProcessorNumber;\r | |
384 | UINTN StackStart;\r | |
4d3314f6 | 385 | \r |
7367cc6c | 386 | MpInitLibWhoAmI (&ProcessorNumber);\r |
4d3314f6 JF |
387 | CpuMpData = GetCpuMpData ();\r |
388 | MwaitSupport = IsMwaitSupport ();\r | |
33a3408f | 389 | if (CpuMpData->UseSevEsAPMethod) {\r |
a6f799e7 XY |
390 | //\r |
391 | // 64-bit AMD processors with SEV-ES\r | |
392 | //\r | |
33a3408f | 393 | StackStart = CpuMpData->SevEsAPResetStackStart;\r |
a6f799e7 XY |
394 | mReservedApLoop.AmdSevEntry (\r |
395 | MwaitSupport,\r | |
396 | CpuMpData->ApTargetCState,\r | |
397 | CpuMpData->PmCodeSegment,\r | |
398 | StackStart - ProcessorNumber * AP_SAFE_STACK_SIZE,\r | |
399 | (UINTN)&mNumberToFinish,\r | |
400 | CpuMpData->Pm16CodeSegment,\r | |
401 | CpuMpData->SevEsAPBuffer,\r | |
402 | CpuMpData->WakeupBuffer\r | |
403 | );\r | |
20da7ca4 | 404 | } else {\r |
a6f799e7 XY |
405 | //\r |
406 | // Intel processors (32-bit or 64-bit), 32-bit AMD processors, or 64-bit AMD processors without SEV-ES\r | |
407 | //\r | |
33a3408f | 408 | StackStart = mReservedTopOfApStack;\r |
a6f799e7 XY |
409 | mReservedApLoop.GenericEntry (\r |
410 | MwaitSupport,\r | |
411 | CpuMpData->ApTargetCState,\r | |
412 | CpuMpData->PmCodeSegment,\r | |
413 | StackStart - ProcessorNumber * AP_SAFE_STACK_SIZE,\r | |
414 | (UINTN)&mNumberToFinish,\r | |
415 | CpuMpData->Pm16CodeSegment,\r | |
416 | CpuMpData->SevEsAPBuffer,\r | |
417 | CpuMpData->WakeupBuffer\r | |
418 | );\r | |
20da7ca4 | 419 | }\r |
053e878b | 420 | \r |
4d3314f6 JF |
421 | //\r |
422 | // It should never reach here\r | |
423 | //\r | |
424 | ASSERT (FALSE);\r | |
425 | }\r | |
426 | \r | |
427 | /**\r | |
428 | Callback function for ExitBootServices.\r | |
429 | \r | |
430 | @param[in] Event Event whose notification function is being invoked.\r | |
431 | @param[in] Context The pointer to the notification function's context,\r | |
432 | which is implementation-dependent.\r | |
433 | \r | |
434 | **/\r | |
435 | VOID\r | |
436 | EFIAPI\r | |
86af2eb8 | 437 | MpInitChangeApLoopCallback (\r |
053e878b MK |
438 | IN EFI_EVENT Event,\r |
439 | IN VOID *Context\r | |
4d3314f6 JF |
440 | )\r |
441 | {\r | |
053e878b | 442 | CPU_MP_DATA *CpuMpData;\r |
5183fb37 | 443 | \r |
053e878b MK |
444 | CpuMpData = GetCpuMpData ();\r |
445 | CpuMpData->PmCodeSegment = GetProtectedModeCS ();\r | |
7b7508ad | 446 | CpuMpData->Pm16CodeSegment = GetProtectedMode16CS ();\r |
053e878b MK |
447 | CpuMpData->ApLoopMode = PcdGet8 (PcdCpuApLoopMode);\r |
448 | mNumberToFinish = CpuMpData->CpuCount - 1;\r | |
cf4e79e4 | 449 | WakeUpAP (CpuMpData, TRUE, 0, RelocateApLoop, NULL, TRUE);\r |
9f91cb01 JF |
450 | while (mNumberToFinish > 0) {\r |
451 | CpuPause ();\r | |
452 | }\r | |
20da7ca4 | 453 | \r |
06544455 | 454 | if (CpuMpData->UseSevEsAPMethod && (CpuMpData->WakeupBuffer != (UINTN)-1)) {\r |
20da7ca4 TL |
455 | //\r |
456 | // There are APs present. Re-use reserved memory area below 1MB from\r | |
457 | // WakeupBuffer as the area to be used for transitioning to 16-bit mode\r | |
458 | // in support of booting of the AP by an OS.\r | |
459 | //\r | |
460 | CopyMem (\r | |
053e878b MK |
461 | (VOID *)CpuMpData->WakeupBuffer,\r |
462 | (VOID *)(CpuMpData->AddressMap.RendezvousFunnelAddress +\r | |
463 | CpuMpData->AddressMap.SwitchToRealPM16ModeOffset),\r | |
20da7ca4 TL |
464 | CpuMpData->AddressMap.SwitchToRealPM16ModeSize\r |
465 | );\r | |
466 | }\r | |
467 | \r | |
86af2eb8 | 468 | DEBUG ((DEBUG_INFO, "%a() done!\n", __FUNCTION__));\r |
4d3314f6 JF |
469 | }\r |
470 | \r | |
93ca4c0f JF |
471 | /**\r |
472 | Initialize global data for MP support.\r | |
473 | \r | |
474 | @param[in] CpuMpData The pointer to CPU MP Data structure.\r | |
475 | **/\r | |
476 | VOID\r | |
477 | InitMpGlobalData (\r | |
053e878b | 478 | IN CPU_MP_DATA *CpuMpData\r |
93ca4c0f JF |
479 | )\r |
480 | {\r | |
053e878b | 481 | EFI_STATUS Status;\r |
cbcf0cd6 | 482 | EFI_PHYSICAL_ADDRESS Address;\r |
053e878b MK |
483 | UINTN Index;\r |
484 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR MemDesc;\r | |
485 | UINTN StackBase;\r | |
486 | CPU_INFO_IN_HOB *CpuInfoInHob;\r | |
e9782e69 XY |
487 | UINTN StackPages;\r |
488 | UINTN FuncPages;\r | |
96378861 | 489 | \r |
93ca4c0f JF |
490 | SaveCpuMpData (CpuMpData);\r |
491 | \r | |
14e8137c JF |
492 | if (CpuMpData->CpuCount == 1) {\r |
493 | //\r | |
494 | // If only BSP exists, return\r | |
495 | //\r | |
496 | return;\r | |
497 | }\r | |
498 | \r | |
15720a6c JW |
499 | if (PcdGetBool (PcdCpuStackGuard)) {\r |
500 | //\r | |
501 | // One extra page at the bottom of the stack is needed for Guard page.\r | |
502 | //\r | |
503 | if (CpuMpData->CpuApStackSize <= EFI_PAGE_SIZE) {\r | |
504 | DEBUG ((DEBUG_ERROR, "PcdCpuApStackSize is not big enough for Stack Guard!\n"));\r | |
505 | ASSERT (FALSE);\r | |
506 | }\r | |
507 | \r | |
52315261 JW |
508 | //\r |
509 | // DXE will reuse stack allocated for APs at PEI phase if it's available.\r | |
510 | // Let's check it here.\r | |
511 | //\r | |
512 | // Note: BSP's stack guard is set at DxeIpl phase. But for the sake of\r | |
513 | // BSP/AP exchange, stack guard for ApTopOfStack of cpu 0 will still be\r | |
514 | // set here.\r | |
515 | //\r | |
516 | CpuInfoInHob = (CPU_INFO_IN_HOB *)(UINTN)CpuMpData->CpuInfoInHob;\r | |
15720a6c | 517 | for (Index = 0; Index < CpuMpData->CpuCount; ++Index) {\r |
053e878b | 518 | if ((CpuInfoInHob != NULL) && (CpuInfoInHob[Index].ApTopOfStack != 0)) {\r |
20737c2f | 519 | StackBase = (UINTN)CpuInfoInHob[Index].ApTopOfStack - CpuMpData->CpuApStackSize;\r |
52315261 JW |
520 | } else {\r |
521 | StackBase = CpuMpData->Buffer + Index * CpuMpData->CpuApStackSize;\r | |
522 | }\r | |
15720a6c JW |
523 | \r |
524 | Status = gDS->GetMemorySpaceDescriptor (StackBase, &MemDesc);\r | |
525 | ASSERT_EFI_ERROR (Status);\r | |
526 | \r | |
527 | Status = gDS->SetMemorySpaceAttributes (\r | |
528 | StackBase,\r | |
529 | EFI_PAGES_TO_SIZE (1),\r | |
530 | MemDesc.Attributes | EFI_MEMORY_RP\r | |
531 | );\r | |
532 | ASSERT_EFI_ERROR (Status);\r | |
52315261 | 533 | \r |
053e878b MK |
534 | DEBUG ((\r |
535 | DEBUG_INFO,\r | |
536 | "Stack Guard set at %lx [cpu%lu]!\n",\r | |
537 | (UINT64)StackBase,\r | |
538 | (UINT64)Index\r | |
539 | ));\r | |
15720a6c JW |
540 | }\r |
541 | }\r | |
542 | \r | |
5183fb37 | 543 | //\r |
ffd6b0b1 JF |
544 | // Avoid APs access invalid buffer data which allocated by BootServices,\r |
545 | // so we will allocate reserved data for AP loop code. We also need to\r | |
546 | // allocate this buffer below 4GB due to APs may be transferred to 32bit\r | |
547 | // protected mode on long mode DXE.\r | |
5183fb37 JF |
548 | // Allocating it in advance since memory services are not available in\r |
549 | // Exit Boot Services callback function.\r | |
550 | //\r | |
e9782e69 XY |
551 | // +------------+ (TopOfApStack)\r |
552 | // | Stack * N |\r | |
553 | // +------------+ (stack base, 4k aligned)\r | |
554 | // | Padding |\r | |
555 | // +------------+\r | |
556 | // | Ap Loop |\r | |
557 | // +------------+ ((low address, 4k-aligned)\r | |
558 | //\r | |
559 | \r | |
560 | StackPages = EFI_SIZE_TO_PAGES (CpuMpData->CpuCount * AP_SAFE_STACK_SIZE);\r | |
561 | FuncPages = EFI_SIZE_TO_PAGES (CpuMpData->AddressMap.RelocateApLoopFuncSize);\r | |
562 | \r | |
cbcf0cd6 YX |
563 | Address = BASE_4GB - 1;\r |
564 | Status = gBS->AllocatePages (\r | |
565 | AllocateMaxAddress,\r | |
566 | EfiReservedMemoryType,\r | |
e9782e69 | 567 | StackPages + FuncPages,\r |
cbcf0cd6 YX |
568 | &Address\r |
569 | );\r | |
570 | ASSERT_EFI_ERROR (Status);\r | |
bc2288f5 | 571 | \r |
a6f799e7 XY |
572 | mReservedApLoop.Data = (VOID *)(UINTN)Address;\r |
573 | ASSERT (mReservedApLoop.Data != NULL);\r | |
73ccde8f | 574 | \r |
cbcf0cd6 YX |
575 | //\r |
576 | // Make sure that the buffer memory is executable if NX protection is enabled\r | |
577 | // for EfiReservedMemoryType.\r | |
578 | //\r | |
579 | // TODO: Check EFI_MEMORY_XP bit set or not once it's available in DXE GCD\r | |
580 | // service.\r | |
581 | //\r | |
582 | Status = gDS->GetMemorySpaceDescriptor (Address, &MemDesc);\r | |
583 | if (!EFI_ERROR (Status)) {\r | |
584 | gDS->SetMemorySpaceAttributes (\r | |
585 | Address,\r | |
e9782e69 | 586 | EFI_PAGES_TO_SIZE (FuncPages),\r |
cbcf0cd6 YX |
587 | MemDesc.Attributes & (~EFI_MEMORY_XP)\r |
588 | );\r | |
73ccde8f XY |
589 | }\r |
590 | \r | |
e9782e69 | 591 | mReservedTopOfApStack = (UINTN)Address + EFI_PAGES_TO_SIZE (StackPages+FuncPages);\r |
cbcf0cd6 YX |
592 | ASSERT ((mReservedTopOfApStack & (UINTN)(CPU_STACK_ALIGNMENT - 1)) == 0);\r |
593 | CopyMem (\r | |
a6f799e7 | 594 | mReservedApLoop.Data,\r |
cbcf0cd6 YX |
595 | CpuMpData->AddressMap.RelocateApLoopFuncAddress,\r |
596 | CpuMpData->AddressMap.RelocateApLoopFuncSize\r | |
597 | );\r | |
5183fb37 | 598 | \r |
96378861 JF |
599 | Status = gBS->CreateEvent (\r |
600 | EVT_TIMER | EVT_NOTIFY_SIGNAL,\r | |
601 | TPL_NOTIFY,\r | |
602 | CheckApsStatus,\r | |
603 | NULL,\r | |
604 | &mCheckAllApsEvent\r | |
605 | );\r | |
606 | ASSERT_EFI_ERROR (Status);\r | |
607 | \r | |
608 | //\r | |
609 | // Set timer to check all APs status.\r | |
610 | //\r | |
611 | Status = gBS->SetTimer (\r | |
612 | mCheckAllApsEvent,\r | |
613 | TimerPeriodic,\r | |
a1c35ff3 HW |
614 | EFI_TIMER_PERIOD_MICROSECONDS (\r |
615 | PcdGet32 (PcdCpuApStatusCheckIntervalInMicroSeconds)\r | |
616 | )\r | |
96378861 JF |
617 | );\r |
618 | ASSERT_EFI_ERROR (Status);\r | |
8677a56a | 619 | \r |
4d3314f6 JF |
620 | Status = gBS->CreateEvent (\r |
621 | EVT_SIGNAL_EXIT_BOOT_SERVICES,\r | |
622 | TPL_CALLBACK,\r | |
86af2eb8 | 623 | MpInitChangeApLoopCallback,\r |
4d3314f6 JF |
624 | NULL,\r |
625 | &mMpInitExitBootServicesEvent\r | |
626 | );\r | |
627 | ASSERT_EFI_ERROR (Status);\r | |
8677a56a JF |
628 | \r |
629 | Status = gBS->CreateEventEx (\r | |
630 | EVT_NOTIFY_SIGNAL,\r | |
631 | TPL_CALLBACK,\r | |
632 | MpInitChangeApLoopCallback,\r | |
633 | NULL,\r | |
634 | &gEfiEventLegacyBootGuid,\r | |
635 | &mLegacyBootEvent\r | |
636 | );\r | |
637 | ASSERT_EFI_ERROR (Status);\r | |
93ca4c0f | 638 | }\r |
3e8ad6bd JF |
639 | \r |
640 | /**\r | |
641 | This service executes a caller provided function on all enabled APs.\r | |
642 | \r | |
643 | @param[in] Procedure A pointer to the function to be run on\r | |
644 | enabled APs of the system. See type\r | |
645 | EFI_AP_PROCEDURE.\r | |
646 | @param[in] SingleThread If TRUE, then all the enabled APs execute\r | |
647 | the function specified by Procedure one by\r | |
648 | one, in ascending order of processor handle\r | |
649 | number. If FALSE, then all the enabled APs\r | |
650 | execute the function specified by Procedure\r | |
651 | simultaneously.\r | |
652 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
653 | service. If it is NULL, then execute in\r | |
654 | blocking mode. BSP waits until all APs finish\r | |
655 | or TimeoutInMicroSeconds expires. If it's\r | |
656 | not NULL, then execute in non-blocking mode.\r | |
657 | BSP requests the function specified by\r | |
658 | Procedure to be started on all the enabled\r | |
659 | APs, and go on executing immediately. If\r | |
660 | all return from Procedure, or TimeoutInMicroSeconds\r | |
661 | expires, this event is signaled. The BSP\r | |
662 | can use the CheckEvent() or WaitForEvent()\r | |
663 | services to check the state of event. Type\r | |
664 | EFI_EVENT is defined in CreateEvent() in\r | |
665 | the Unified Extensible Firmware Interface\r | |
666 | Specification.\r | |
367284e7 | 667 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
3e8ad6bd JF |
668 | APs to return from Procedure, either for\r |
669 | blocking or non-blocking mode. Zero means\r | |
670 | infinity. If the timeout expires before\r | |
671 | all APs return from Procedure, then Procedure\r | |
672 | on the failed APs is terminated. All enabled\r | |
673 | APs are available for next function assigned\r | |
674 | by MpInitLibStartupAllAPs() or\r | |
675 | MPInitLibStartupThisAP().\r | |
676 | If the timeout expires in blocking mode,\r | |
677 | BSP returns EFI_TIMEOUT. If the timeout\r | |
678 | expires in non-blocking mode, WaitEvent\r | |
679 | is signaled with SignalEvent().\r | |
680 | @param[in] ProcedureArgument The parameter passed into Procedure for\r | |
681 | all APs.\r | |
682 | @param[out] FailedCpuList If NULL, this parameter is ignored. Otherwise,\r | |
683 | if all APs finish successfully, then its\r | |
684 | content is set to NULL. If not all APs\r | |
685 | finish before timeout expires, then its\r | |
686 | content is set to address of the buffer\r | |
687 | holding handle numbers of the failed APs.\r | |
688 | The buffer is allocated by MP Initialization\r | |
689 | library, and it's the caller's responsibility to\r | |
690 | free the buffer with FreePool() service.\r | |
691 | In blocking mode, it is ready for consumption\r | |
692 | when the call returns. In non-blocking mode,\r | |
693 | it is ready when WaitEvent is signaled. The\r | |
694 | list of failed CPU is terminated by\r | |
695 | END_OF_CPU_LIST.\r | |
696 | \r | |
697 | @retval EFI_SUCCESS In blocking mode, all APs have finished before\r | |
698 | the timeout expired.\r | |
699 | @retval EFI_SUCCESS In non-blocking mode, function has been dispatched\r | |
700 | to all enabled APs.\r | |
701 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
702 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
703 | signaled.\r | |
704 | @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not\r | |
705 | supported.\r | |
706 | @retval EFI_DEVICE_ERROR Caller processor is AP.\r | |
707 | @retval EFI_NOT_STARTED No enabled APs exist in the system.\r | |
708 | @retval EFI_NOT_READY Any enabled APs are busy.\r | |
709 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
710 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
711 | all enabled APs have finished.\r | |
712 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
713 | \r | |
714 | **/\r | |
715 | EFI_STATUS\r | |
716 | EFIAPI\r | |
717 | MpInitLibStartupAllAPs (\r | |
053e878b MK |
718 | IN EFI_AP_PROCEDURE Procedure,\r |
719 | IN BOOLEAN SingleThread,\r | |
720 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
721 | IN UINTN TimeoutInMicroseconds,\r | |
722 | IN VOID *ProcedureArgument OPTIONAL,\r | |
723 | OUT UINTN **FailedCpuList OPTIONAL\r | |
3e8ad6bd JF |
724 | )\r |
725 | {\r | |
053e878b | 726 | EFI_STATUS Status;\r |
86efe976 JF |
727 | \r |
728 | //\r | |
729 | // Temporarily stop checkAllApsStatus for avoid resource dead-lock.\r | |
730 | //\r | |
731 | mStopCheckAllApsStatus = TRUE;\r | |
732 | \r | |
ee0c39fa | 733 | Status = StartupAllCPUsWorker (\r |
86efe976 JF |
734 | Procedure,\r |
735 | SingleThread,\r | |
ee0c39fa | 736 | TRUE,\r |
86efe976 JF |
737 | WaitEvent,\r |
738 | TimeoutInMicroseconds,\r | |
739 | ProcedureArgument,\r | |
740 | FailedCpuList\r | |
741 | );\r | |
742 | \r | |
743 | //\r | |
744 | // Start checkAllApsStatus\r | |
745 | //\r | |
746 | mStopCheckAllApsStatus = FALSE;\r | |
747 | \r | |
748 | return Status;\r | |
3e8ad6bd JF |
749 | }\r |
750 | \r | |
751 | /**\r | |
752 | This service lets the caller get one enabled AP to execute a caller-provided\r | |
753 | function.\r | |
754 | \r | |
755 | @param[in] Procedure A pointer to the function to be run on the\r | |
756 | designated AP of the system. See type\r | |
757 | EFI_AP_PROCEDURE.\r | |
758 | @param[in] ProcessorNumber The handle number of the AP. The range is\r | |
759 | from 0 to the total number of logical\r | |
760 | processors minus 1. The total number of\r | |
761 | logical processors can be retrieved by\r | |
762 | MpInitLibGetNumberOfProcessors().\r | |
763 | @param[in] WaitEvent The event created by the caller with CreateEvent()\r | |
764 | service. If it is NULL, then execute in\r | |
765 | blocking mode. BSP waits until this AP finish\r | |
766 | or TimeoutInMicroSeconds expires. If it's\r | |
767 | not NULL, then execute in non-blocking mode.\r | |
768 | BSP requests the function specified by\r | |
769 | Procedure to be started on this AP,\r | |
770 | and go on executing immediately. If this AP\r | |
771 | return from Procedure or TimeoutInMicroSeconds\r | |
772 | expires, this event is signaled. The BSP\r | |
773 | can use the CheckEvent() or WaitForEvent()\r | |
774 | services to check the state of event. Type\r | |
775 | EFI_EVENT is defined in CreateEvent() in\r | |
776 | the Unified Extensible Firmware Interface\r | |
777 | Specification.\r | |
367284e7 | 778 | @param[in] TimeoutInMicroseconds Indicates the time limit in microseconds for\r |
3e8ad6bd JF |
779 | this AP to finish this Procedure, either for\r |
780 | blocking or non-blocking mode. Zero means\r | |
781 | infinity. If the timeout expires before\r | |
782 | this AP returns from Procedure, then Procedure\r | |
783 | on the AP is terminated. The\r | |
784 | AP is available for next function assigned\r | |
785 | by MpInitLibStartupAllAPs() or\r | |
786 | MpInitLibStartupThisAP().\r | |
787 | If the timeout expires in blocking mode,\r | |
788 | BSP returns EFI_TIMEOUT. If the timeout\r | |
789 | expires in non-blocking mode, WaitEvent\r | |
790 | is signaled with SignalEvent().\r | |
791 | @param[in] ProcedureArgument The parameter passed into Procedure on the\r | |
792 | specified AP.\r | |
793 | @param[out] Finished If NULL, this parameter is ignored. In\r | |
794 | blocking mode, this parameter is ignored.\r | |
795 | In non-blocking mode, if AP returns from\r | |
796 | Procedure before the timeout expires, its\r | |
797 | content is set to TRUE. Otherwise, the\r | |
798 | value is set to FALSE. The caller can\r | |
799 | determine if the AP returned from Procedure\r | |
800 | by evaluating this value.\r | |
801 | \r | |
802 | @retval EFI_SUCCESS In blocking mode, specified AP finished before\r | |
803 | the timeout expires.\r | |
804 | @retval EFI_SUCCESS In non-blocking mode, the function has been\r | |
805 | dispatched to specified AP.\r | |
806 | @retval EFI_UNSUPPORTED A non-blocking mode request was made after the\r | |
807 | UEFI event EFI_EVENT_GROUP_READY_TO_BOOT was\r | |
808 | signaled.\r | |
809 | @retval EFI_UNSUPPORTED WaitEvent is not NULL if non-blocking mode is not\r | |
810 | supported.\r | |
811 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
812 | @retval EFI_TIMEOUT In blocking mode, the timeout expired before\r | |
813 | the specified AP has finished.\r | |
814 | @retval EFI_NOT_READY The specified AP is busy.\r | |
815 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
816 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
817 | ProcessorNumber does not exist.\r | |
818 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP or disabled AP.\r | |
819 | @retval EFI_INVALID_PARAMETER Procedure is NULL.\r | |
820 | \r | |
821 | **/\r | |
822 | EFI_STATUS\r | |
823 | EFIAPI\r | |
824 | MpInitLibStartupThisAP (\r | |
053e878b MK |
825 | IN EFI_AP_PROCEDURE Procedure,\r |
826 | IN UINTN ProcessorNumber,\r | |
827 | IN EFI_EVENT WaitEvent OPTIONAL,\r | |
828 | IN UINTN TimeoutInMicroseconds,\r | |
829 | IN VOID *ProcedureArgument OPTIONAL,\r | |
830 | OUT BOOLEAN *Finished OPTIONAL\r | |
3e8ad6bd JF |
831 | )\r |
832 | {\r | |
053e878b | 833 | EFI_STATUS Status;\r |
20ae5774 JF |
834 | \r |
835 | //\r | |
836 | // temporarily stop checkAllApsStatus for avoid resource dead-lock.\r | |
837 | //\r | |
838 | mStopCheckAllApsStatus = TRUE;\r | |
839 | \r | |
840 | Status = StartupThisAPWorker (\r | |
841 | Procedure,\r | |
842 | ProcessorNumber,\r | |
843 | WaitEvent,\r | |
844 | TimeoutInMicroseconds,\r | |
845 | ProcedureArgument,\r | |
846 | Finished\r | |
847 | );\r | |
848 | \r | |
849 | mStopCheckAllApsStatus = FALSE;\r | |
850 | \r | |
851 | return Status;\r | |
3e8ad6bd JF |
852 | }\r |
853 | \r | |
854 | /**\r | |
855 | This service switches the requested AP to be the BSP from that point onward.\r | |
856 | This service changes the BSP for all purposes. This call can only be performed\r | |
857 | by the current BSP.\r | |
858 | \r | |
859 | @param[in] ProcessorNumber The handle number of AP that is to become the new\r | |
860 | BSP. The range is from 0 to the total number of\r | |
861 | logical processors minus 1. The total number of\r | |
862 | logical processors can be retrieved by\r | |
863 | MpInitLibGetNumberOfProcessors().\r | |
864 | @param[in] EnableOldBSP If TRUE, then the old BSP will be listed as an\r | |
865 | enabled AP. Otherwise, it will be disabled.\r | |
866 | \r | |
867 | @retval EFI_SUCCESS BSP successfully switched.\r | |
868 | @retval EFI_UNSUPPORTED Switching the BSP cannot be completed prior to\r | |
869 | this service returning.\r | |
870 | @retval EFI_UNSUPPORTED Switching the BSP is not supported.\r | |
871 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
872 | @retval EFI_NOT_FOUND The processor with the handle specified by\r | |
873 | ProcessorNumber does not exist.\r | |
874 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the current BSP or\r | |
875 | a disabled AP.\r | |
876 | @retval EFI_NOT_READY The specified AP is busy.\r | |
877 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
878 | \r | |
879 | **/\r | |
880 | EFI_STATUS\r | |
881 | EFIAPI\r | |
882 | MpInitLibSwitchBSP (\r | |
053e878b MK |
883 | IN UINTN ProcessorNumber,\r |
884 | IN BOOLEAN EnableOldBSP\r | |
3e8ad6bd JF |
885 | )\r |
886 | {\r | |
053e878b MK |
887 | EFI_STATUS Status;\r |
888 | EFI_TIMER_ARCH_PROTOCOL *Timer;\r | |
889 | UINT64 TimerPeriod;\r | |
41be0da5 | 890 | \r |
8ad05bd2 | 891 | TimerPeriod = 0;\r |
b6e45716 JF |
892 | //\r |
893 | // Locate Timer Arch Protocol\r | |
894 | //\r | |
053e878b | 895 | Status = gBS->LocateProtocol (&gEfiTimerArchProtocolGuid, NULL, (VOID **)&Timer);\r |
b6e45716 JF |
896 | if (EFI_ERROR (Status)) {\r |
897 | Timer = NULL;\r | |
898 | }\r | |
899 | \r | |
900 | if (Timer != NULL) {\r | |
901 | //\r | |
902 | // Save current rate of DXE Timer\r | |
903 | //\r | |
904 | Timer->GetTimerPeriod (Timer, &TimerPeriod);\r | |
905 | //\r | |
906 | // Disable DXE Timer and drain pending interrupts\r | |
907 | //\r | |
908 | Timer->SetTimerPeriod (Timer, 0);\r | |
909 | }\r | |
41be0da5 JF |
910 | \r |
911 | Status = SwitchBSPWorker (ProcessorNumber, EnableOldBSP);\r | |
912 | \r | |
b6e45716 JF |
913 | if (Timer != NULL) {\r |
914 | //\r | |
915 | // Enable and restore rate of DXE Timer\r | |
916 | //\r | |
917 | Timer->SetTimerPeriod (Timer, TimerPeriod);\r | |
918 | }\r | |
919 | \r | |
41be0da5 | 920 | return Status;\r |
3e8ad6bd JF |
921 | }\r |
922 | \r | |
923 | /**\r | |
924 | This service lets the caller enable or disable an AP from this point onward.\r | |
925 | This service may only be called from the BSP.\r | |
926 | \r | |
927 | @param[in] ProcessorNumber The handle number of AP.\r | |
928 | The range is from 0 to the total number of\r | |
929 | logical processors minus 1. The total number of\r | |
930 | logical processors can be retrieved by\r | |
931 | MpInitLibGetNumberOfProcessors().\r | |
932 | @param[in] EnableAP Specifies the new state for the processor for\r | |
933 | enabled, FALSE for disabled.\r | |
934 | @param[in] HealthFlag If not NULL, a pointer to a value that specifies\r | |
935 | the new health status of the AP. This flag\r | |
936 | corresponds to StatusFlag defined in\r | |
937 | EFI_MP_SERVICES_PROTOCOL.GetProcessorInfo(). Only\r | |
938 | the PROCESSOR_HEALTH_STATUS_BIT is used. All other\r | |
939 | bits are ignored. If it is NULL, this parameter\r | |
940 | is ignored.\r | |
941 | \r | |
942 | @retval EFI_SUCCESS The specified AP was enabled or disabled successfully.\r | |
943 | @retval EFI_UNSUPPORTED Enabling or disabling an AP cannot be completed\r | |
944 | prior to this service returning.\r | |
945 | @retval EFI_UNSUPPORTED Enabling or disabling an AP is not supported.\r | |
946 | @retval EFI_DEVICE_ERROR The calling processor is an AP.\r | |
947 | @retval EFI_NOT_FOUND Processor with the handle specified by ProcessorNumber\r | |
948 | does not exist.\r | |
949 | @retval EFI_INVALID_PARAMETER ProcessorNumber specifies the BSP.\r | |
950 | @retval EFI_NOT_READY MP Initialize Library is not initialized.\r | |
951 | \r | |
952 | **/\r | |
953 | EFI_STATUS\r | |
954 | EFIAPI\r | |
955 | MpInitLibEnableDisableAP (\r | |
053e878b MK |
956 | IN UINTN ProcessorNumber,\r |
957 | IN BOOLEAN EnableAP,\r | |
958 | IN UINT32 *HealthFlag OPTIONAL\r | |
3e8ad6bd JF |
959 | )\r |
960 | {\r | |
053e878b MK |
961 | EFI_STATUS Status;\r |
962 | BOOLEAN TempStopCheckState;\r | |
e37109bc JF |
963 | \r |
964 | TempStopCheckState = FALSE;\r | |
965 | //\r | |
966 | // temporarily stop checkAllAPsStatus for initialize parameters.\r | |
967 | //\r | |
968 | if (!mStopCheckAllApsStatus) {\r | |
969 | mStopCheckAllApsStatus = TRUE;\r | |
970 | TempStopCheckState = TRUE;\r | |
971 | }\r | |
972 | \r | |
973 | Status = EnableDisableApWorker (ProcessorNumber, EnableAP, HealthFlag);\r | |
974 | \r | |
975 | if (TempStopCheckState) {\r | |
976 | mStopCheckAllApsStatus = FALSE;\r | |
977 | }\r | |
978 | \r | |
979 | return Status;\r | |
3e8ad6bd | 980 | }\r |
c788c2b1 SF |
981 | \r |
982 | /**\r | |
983 | This funtion will try to invoke platform specific microcode shadow logic to\r | |
984 | relocate microcode update patches into memory.\r | |
985 | \r | |
4ac82ea1 | 986 | @param[in, out] CpuMpData The pointer to CPU MP Data structure.\r |
c788c2b1 SF |
987 | \r |
988 | @retval EFI_SUCCESS Shadow microcode success.\r | |
989 | @retval EFI_OUT_OF_RESOURCES No enough resource to complete the operation.\r | |
990 | @retval EFI_UNSUPPORTED Can't find platform specific microcode shadow\r | |
991 | PPI/Protocol.\r | |
992 | **/\r | |
993 | EFI_STATUS\r | |
994 | PlatformShadowMicrocode (\r | |
053e878b | 995 | IN OUT CPU_MP_DATA *CpuMpData\r |
c788c2b1 SF |
996 | )\r |
997 | {\r | |
998 | //\r | |
999 | // There is no DXE version of platform shadow microcode protocol so far.\r | |
1000 | // A platform which only uses DxeMpInitLib instance could only supports\r | |
1001 | // the PCD based microcode shadowing.\r | |
1002 | //\r | |
1003 | return EFI_UNSUPPORTED;\r | |
1004 | }\r |