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1 | /** @file\r |
2 | MM Core Main Entry Point\r | |
3 | \r | |
4 | Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r | |
5 | Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>\r | |
6 | This program and the accompanying materials are licensed and made available\r | |
7 | under the terms and conditions of the BSD License which accompanies this\r | |
8 | distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include "StandaloneMmCore.h"\r | |
17 | \r | |
18 | EFI_STATUS\r | |
19 | MmCoreFfsFindMmDriver (\r | |
20 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader\r | |
21 | );\r | |
22 | \r | |
23 | EFI_STATUS\r | |
24 | MmDispatcher (\r | |
25 | VOID\r | |
26 | );\r | |
27 | \r | |
28 | //\r | |
29 | // Globals used to initialize the protocol\r | |
30 | //\r | |
31 | EFI_HANDLE mMmCpuHandle = NULL;\r | |
32 | \r | |
33 | //\r | |
34 | // Physical pointer to private structure shared between MM IPL and the MM Core\r | |
35 | //\r | |
36 | MM_CORE_PRIVATE_DATA *gMmCorePrivate;\r | |
37 | \r | |
38 | //\r | |
39 | // MM Core global variable for MM System Table. Only accessed as a physical structure in MMRAM.\r | |
40 | //\r | |
41 | EFI_MM_SYSTEM_TABLE gMmCoreMmst = {\r | |
42 | \r | |
43 | // The table header for the MMST.\r | |
44 | {\r | |
45 | MM_MMST_SIGNATURE,\r | |
46 | EFI_MM_SYSTEM_TABLE_REVISION,\r | |
47 | sizeof (gMmCoreMmst.Hdr)\r | |
48 | },\r | |
49 | // MmFirmwareVendor\r | |
50 | NULL,\r | |
51 | // MmFirmwareRevision\r | |
52 | 0,\r | |
53 | // MmInstallConfigurationTable\r | |
54 | MmInstallConfigurationTable,\r | |
55 | // I/O Service\r | |
56 | {\r | |
57 | {\r | |
58 | (EFI_MM_CPU_IO) MmEfiNotAvailableYetArg5, // MmMemRead\r | |
59 | (EFI_MM_CPU_IO) MmEfiNotAvailableYetArg5 // MmMemWrite\r | |
60 | },\r | |
61 | {\r | |
62 | (EFI_MM_CPU_IO) MmEfiNotAvailableYetArg5, // MmIoRead\r | |
63 | (EFI_MM_CPU_IO) MmEfiNotAvailableYetArg5 // MmIoWrite\r | |
64 | }\r | |
65 | },\r | |
66 | // Runtime memory services\r | |
67 | MmAllocatePool,\r | |
68 | MmFreePool,\r | |
69 | MmAllocatePages,\r | |
70 | MmFreePages,\r | |
71 | // MP service\r | |
72 | NULL, // MmStartupThisAp\r | |
73 | 0, // CurrentlyExecutingCpu\r | |
74 | 0, // NumberOfCpus\r | |
75 | NULL, // CpuSaveStateSize\r | |
76 | NULL, // CpuSaveState\r | |
77 | 0, // NumberOfTableEntries\r | |
78 | NULL, // MmConfigurationTable\r | |
79 | MmInstallProtocolInterface,\r | |
80 | MmUninstallProtocolInterface,\r | |
81 | MmHandleProtocol,\r | |
82 | MmRegisterProtocolNotify,\r | |
83 | MmLocateHandle,\r | |
84 | MmLocateProtocol,\r | |
85 | MmiManage,\r | |
86 | MmiHandlerRegister,\r | |
87 | MmiHandlerUnRegister\r | |
88 | };\r | |
89 | \r | |
90 | //\r | |
91 | // Flag to determine if the platform has performed a legacy boot.\r | |
92 | // If this flag is TRUE, then the runtime code and runtime data associated with the\r | |
93 | // MM IPL are converted to free memory, so the MM Core must guarantee that is\r | |
94 | // does not touch of the code/data associated with the MM IPL if this flag is TRUE.\r | |
95 | //\r | |
96 | BOOLEAN mInLegacyBoot = FALSE;\r | |
97 | \r | |
98 | //\r | |
99 | // Table of MMI Handlers that are registered by the MM Core when it is initialized\r | |
100 | //\r | |
101 | MM_CORE_MMI_HANDLERS mMmCoreMmiHandlers[] = {\r | |
102 | { MmFvDispatchHandler, &gMmFvDispatchGuid, NULL, TRUE },\r | |
103 | { MmDriverDispatchHandler, &gEfiEventDxeDispatchGuid, NULL, TRUE },\r | |
104 | { MmReadyToLockHandler, &gEfiDxeMmReadyToLockProtocolGuid, NULL, TRUE },\r | |
105 | { MmEndOfDxeHandler, &gEfiEndOfDxeEventGroupGuid, NULL, FALSE },\r | |
106 | { MmLegacyBootHandler, &gEfiEventLegacyBootGuid, NULL, FALSE },\r | |
107 | { MmExitBootServiceHandler,&gEfiEventExitBootServicesGuid, NULL, FALSE },\r | |
108 | { MmReadyToBootHandler, &gEfiEventReadyToBootGuid, NULL, FALSE },\r | |
109 | { NULL, NULL, NULL, FALSE },\r | |
110 | };\r | |
111 | \r | |
112 | EFI_SYSTEM_TABLE *mEfiSystemTable;\r | |
113 | UINTN mMmramRangeCount;\r | |
114 | EFI_MMRAM_DESCRIPTOR *mMmramRanges;\r | |
115 | \r | |
116 | /**\r | |
117 | Place holder function until all the MM System Table Service are available.\r | |
118 | \r | |
119 | Note: This function is only used by MMRAM invocation. It is never used by DXE invocation.\r | |
120 | \r | |
121 | @param Arg1 Undefined\r | |
122 | @param Arg2 Undefined\r | |
123 | @param Arg3 Undefined\r | |
124 | @param Arg4 Undefined\r | |
125 | @param Arg5 Undefined\r | |
126 | \r | |
127 | @return EFI_NOT_AVAILABLE_YET\r | |
128 | \r | |
129 | **/\r | |
130 | EFI_STATUS\r | |
131 | EFIAPI\r | |
132 | MmEfiNotAvailableYetArg5 (\r | |
133 | UINTN Arg1,\r | |
134 | UINTN Arg2,\r | |
135 | UINTN Arg3,\r | |
136 | UINTN Arg4,\r | |
137 | UINTN Arg5\r | |
138 | )\r | |
139 | {\r | |
140 | //\r | |
141 | // This function should never be executed. If it does, then the architectural protocols\r | |
142 | // have not been designed correctly.\r | |
143 | //\r | |
144 | return EFI_NOT_AVAILABLE_YET;\r | |
145 | }\r | |
146 | \r | |
147 | /**\r | |
148 | Software MMI handler that is called when a Legacy Boot event is signaled. The MM\r | |
149 | Core uses this signal to know that a Legacy Boot has been performed and that\r | |
150 | gMmCorePrivate that is shared between the UEFI and MM execution environments can\r | |
151 | not be accessed from MM anymore since that structure is considered free memory by\r | |
152 | a legacy OS.\r | |
153 | \r | |
154 | @param DispatchHandle The unique handle assigned to this handler by MmiHandlerRegister().\r | |
155 | @param Context Points to an optional handler context which was specified when the handler was registered.\r | |
156 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
157 | be conveyed from a non-MM environment into an MM environment.\r | |
158 | @param CommBufferSize The size of the CommBuffer.\r | |
159 | \r | |
160 | @return Status Code\r | |
161 | \r | |
162 | **/\r | |
163 | EFI_STATUS\r | |
164 | EFIAPI\r | |
165 | MmLegacyBootHandler (\r | |
166 | IN EFI_HANDLE DispatchHandle,\r | |
167 | IN CONST VOID *Context, OPTIONAL\r | |
168 | IN OUT VOID *CommBuffer, OPTIONAL\r | |
169 | IN OUT UINTN *CommBufferSize OPTIONAL\r | |
170 | )\r | |
171 | {\r | |
172 | EFI_HANDLE MmHandle;\r | |
173 | EFI_STATUS Status = EFI_SUCCESS;\r | |
174 | \r | |
175 | if (!mInLegacyBoot) {\r | |
176 | MmHandle = NULL;\r | |
177 | Status = MmInstallProtocolInterface (\r | |
178 | &MmHandle,\r | |
179 | &gEfiEventLegacyBootGuid,\r | |
180 | EFI_NATIVE_INTERFACE,\r | |
181 | NULL\r | |
182 | );\r | |
183 | }\r | |
184 | mInLegacyBoot = TRUE;\r | |
185 | return Status;\r | |
186 | }\r | |
187 | \r | |
188 | /**\r | |
189 | Software MMI handler that is called when a ExitBoot Service event is signaled.\r | |
190 | \r | |
191 | @param DispatchHandle The unique handle assigned to this handler by MmiHandlerRegister().\r | |
192 | @param Context Points to an optional handler context which was specified when the handler was registered.\r | |
193 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
194 | be conveyed from a non-MM environment into an MM environment.\r | |
195 | @param CommBufferSize The size of the CommBuffer.\r | |
196 | \r | |
197 | @return Status Code\r | |
198 | \r | |
199 | **/\r | |
200 | EFI_STATUS\r | |
201 | EFIAPI\r | |
202 | MmExitBootServiceHandler (\r | |
203 | IN EFI_HANDLE DispatchHandle,\r | |
204 | IN CONST VOID *Context, OPTIONAL\r | |
205 | IN OUT VOID *CommBuffer, OPTIONAL\r | |
206 | IN OUT UINTN *CommBufferSize OPTIONAL\r | |
207 | )\r | |
208 | {\r | |
209 | EFI_HANDLE MmHandle;\r | |
210 | EFI_STATUS Status = EFI_SUCCESS;\r | |
211 | STATIC BOOLEAN mInExitBootServices = FALSE;\r | |
212 | \r | |
213 | if (!mInExitBootServices) {\r | |
214 | MmHandle = NULL;\r | |
215 | Status = MmInstallProtocolInterface (\r | |
216 | &MmHandle,\r | |
217 | &gEfiEventExitBootServicesGuid,\r | |
218 | EFI_NATIVE_INTERFACE,\r | |
219 | NULL\r | |
220 | );\r | |
221 | }\r | |
222 | mInExitBootServices = TRUE;\r | |
223 | return Status;\r | |
224 | }\r | |
225 | \r | |
226 | /**\r | |
227 | Software MMI handler that is called when a ExitBoot Service event is signaled.\r | |
228 | \r | |
229 | @param DispatchHandle The unique handle assigned to this handler by MmiHandlerRegister().\r | |
230 | @param Context Points to an optional handler context which was specified when the handler was registered.\r | |
231 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
232 | be conveyed from a non-MM environment into an MM environment.\r | |
233 | @param CommBufferSize The size of the CommBuffer.\r | |
234 | \r | |
235 | @return Status Code\r | |
236 | \r | |
237 | **/\r | |
238 | EFI_STATUS\r | |
239 | EFIAPI\r | |
240 | MmReadyToBootHandler (\r | |
241 | IN EFI_HANDLE DispatchHandle,\r | |
242 | IN CONST VOID *Context, OPTIONAL\r | |
243 | IN OUT VOID *CommBuffer, OPTIONAL\r | |
244 | IN OUT UINTN *CommBufferSize OPTIONAL\r | |
245 | )\r | |
246 | {\r | |
247 | EFI_HANDLE MmHandle;\r | |
248 | EFI_STATUS Status = EFI_SUCCESS;\r | |
249 | STATIC BOOLEAN mInReadyToBoot = FALSE;\r | |
250 | \r | |
251 | if (!mInReadyToBoot) {\r | |
252 | MmHandle = NULL;\r | |
253 | Status = MmInstallProtocolInterface (\r | |
254 | &MmHandle,\r | |
255 | &gEfiEventReadyToBootGuid,\r | |
256 | EFI_NATIVE_INTERFACE,\r | |
257 | NULL\r | |
258 | );\r | |
259 | }\r | |
260 | mInReadyToBoot = TRUE;\r | |
261 | return Status;\r | |
262 | }\r | |
263 | \r | |
264 | /**\r | |
265 | Software MMI handler that is called when the DxeMmReadyToLock protocol is added\r | |
266 | or if gEfiEventReadyToBootGuid is signaled. This function unregisters the\r | |
267 | Software SMIs that are nor required after MMRAM is locked and installs the\r | |
268 | MM Ready To Lock Protocol so MM Drivers are informed that MMRAM is about\r | |
269 | to be locked.\r | |
270 | \r | |
271 | @param DispatchHandle The unique handle assigned to this handler by MmiHandlerRegister().\r | |
272 | @param Context Points to an optional handler context which was specified when the handler was registered.\r | |
273 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
274 | be conveyed from a non-MM environment into an MM environment.\r | |
275 | @param CommBufferSize The size of the CommBuffer.\r | |
276 | \r | |
277 | @return Status Code\r | |
278 | \r | |
279 | **/\r | |
280 | EFI_STATUS\r | |
281 | EFIAPI\r | |
282 | MmReadyToLockHandler (\r | |
283 | IN EFI_HANDLE DispatchHandle,\r | |
284 | IN CONST VOID *Context, OPTIONAL\r | |
285 | IN OUT VOID *CommBuffer, OPTIONAL\r | |
286 | IN OUT UINTN *CommBufferSize OPTIONAL\r | |
287 | )\r | |
288 | {\r | |
289 | EFI_STATUS Status;\r | |
290 | UINTN Index;\r | |
291 | EFI_HANDLE MmHandle;\r | |
292 | \r | |
293 | DEBUG ((DEBUG_INFO, "MmReadyToLockHandler\n"));\r | |
294 | \r | |
295 | //\r | |
296 | // Unregister MMI Handlers that are no longer required after the MM driver dispatch is stopped\r | |
297 | //\r | |
298 | for (Index = 0; mMmCoreMmiHandlers[Index].HandlerType != NULL; Index++) {\r | |
299 | if (mMmCoreMmiHandlers[Index].UnRegister) {\r | |
300 | MmiHandlerUnRegister (mMmCoreMmiHandlers[Index].DispatchHandle);\r | |
301 | }\r | |
302 | }\r | |
303 | \r | |
304 | //\r | |
305 | // Install MM Ready to lock protocol\r | |
306 | //\r | |
307 | MmHandle = NULL;\r | |
308 | Status = MmInstallProtocolInterface (\r | |
309 | &MmHandle,\r | |
310 | &gEfiMmReadyToLockProtocolGuid,\r | |
311 | EFI_NATIVE_INTERFACE,\r | |
312 | NULL\r | |
313 | );\r | |
314 | \r | |
315 | //\r | |
316 | // Make sure MM CPU I/O 2 Protocol has been installed into the handle database\r | |
317 | //\r | |
318 | //Status = MmLocateProtocol (&EFI_MM_CPU_IO_PROTOCOL_GUID, NULL, &Interface);\r | |
319 | \r | |
320 | //\r | |
321 | // Print a message on a debug build if the MM CPU I/O 2 Protocol is not installed\r | |
322 | //\r | |
323 | //if (EFI_ERROR (Status)) {\r | |
324 | //DEBUG ((DEBUG_ERROR, "\nSMM: SmmCpuIo Arch Protocol not present!!\n"));\r | |
325 | //}\r | |
326 | \r | |
327 | \r | |
328 | //\r | |
329 | // Assert if the CPU I/O 2 Protocol is not installed\r | |
330 | //\r | |
331 | //ASSERT_EFI_ERROR (Status);\r | |
332 | \r | |
333 | //\r | |
334 | // Display any drivers that were not dispatched because dependency expression\r | |
335 | // evaluated to false if this is a debug build\r | |
336 | //\r | |
337 | //MmDisplayDiscoveredNotDispatched ();\r | |
338 | \r | |
339 | return Status;\r | |
340 | }\r | |
341 | \r | |
342 | /**\r | |
343 | Software MMI handler that is called when the EndOfDxe event is signaled.\r | |
344 | This function installs the MM EndOfDxe Protocol so MM Drivers are informed that\r | |
345 | platform code will invoke 3rd part code.\r | |
346 | \r | |
347 | @param DispatchHandle The unique handle assigned to this handler by MmiHandlerRegister().\r | |
348 | @param Context Points to an optional handler context which was specified when the handler was registered.\r | |
349 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
350 | be conveyed from a non-MM environment into an MM environment.\r | |
351 | @param CommBufferSize The size of the CommBuffer.\r | |
352 | \r | |
353 | @return Status Code\r | |
354 | \r | |
355 | **/\r | |
356 | EFI_STATUS\r | |
357 | EFIAPI\r | |
358 | MmEndOfDxeHandler (\r | |
359 | IN EFI_HANDLE DispatchHandle,\r | |
360 | IN CONST VOID *Context, OPTIONAL\r | |
361 | IN OUT VOID *CommBuffer, OPTIONAL\r | |
362 | IN OUT UINTN *CommBufferSize OPTIONAL\r | |
363 | )\r | |
364 | {\r | |
365 | EFI_STATUS Status;\r | |
366 | EFI_HANDLE MmHandle;\r | |
367 | \r | |
368 | DEBUG ((DEBUG_INFO, "MmEndOfDxeHandler\n"));\r | |
369 | //\r | |
370 | // Install MM EndOfDxe protocol\r | |
371 | //\r | |
372 | MmHandle = NULL;\r | |
373 | Status = MmInstallProtocolInterface (\r | |
374 | &MmHandle,\r | |
375 | &gEfiMmEndOfDxeProtocolGuid,\r | |
376 | EFI_NATIVE_INTERFACE,\r | |
377 | NULL\r | |
378 | );\r | |
379 | return Status;\r | |
380 | }\r | |
381 | \r | |
382 | \r | |
383 | \r | |
384 | /**\r | |
385 | The main entry point to MM Foundation.\r | |
386 | \r | |
387 | Note: This function is only used by MMRAM invocation. It is never used by DXE invocation.\r | |
388 | \r | |
389 | @param MmEntryContext Processor information and functionality\r | |
390 | needed by MM Foundation.\r | |
391 | \r | |
392 | **/\r | |
393 | VOID\r | |
394 | EFIAPI\r | |
395 | MmEntryPoint (\r | |
396 | IN CONST EFI_MM_ENTRY_CONTEXT *MmEntryContext\r | |
397 | )\r | |
398 | {\r | |
399 | EFI_STATUS Status;\r | |
400 | EFI_MM_COMMUNICATE_HEADER *CommunicateHeader;\r | |
401 | BOOLEAN InLegacyBoot;\r | |
402 | \r | |
403 | DEBUG ((DEBUG_INFO, "MmEntryPoint ...\n"));\r | |
404 | \r | |
405 | //\r | |
406 | // Update MMST using the context\r | |
407 | //\r | |
408 | CopyMem (&gMmCoreMmst.MmStartupThisAp, MmEntryContext, sizeof (EFI_MM_ENTRY_CONTEXT));\r | |
409 | \r | |
410 | //\r | |
411 | // Call platform hook before Mm Dispatch\r | |
412 | //\r | |
413 | //PlatformHookBeforeMmDispatch ();\r | |
414 | \r | |
415 | //\r | |
416 | // If a legacy boot has occured, then make sure gMmCorePrivate is not accessed\r | |
417 | //\r | |
418 | InLegacyBoot = mInLegacyBoot;\r | |
419 | if (!InLegacyBoot) {\r | |
420 | //\r | |
421 | // TBD: Mark the InMm flag as TRUE\r | |
422 | //\r | |
423 | gMmCorePrivate->InMm = TRUE;\r | |
424 | \r | |
425 | //\r | |
426 | // Check to see if this is a Synchronous MMI sent through the MM Communication\r | |
427 | // Protocol or an Asynchronous MMI\r | |
428 | //\r | |
429 | if (gMmCorePrivate->CommunicationBuffer != 0) {\r | |
430 | //\r | |
431 | // Synchronous MMI for MM Core or request from Communicate protocol\r | |
432 | //\r | |
433 | if (!MmIsBufferOutsideMmValid ((UINTN)gMmCorePrivate->CommunicationBuffer, gMmCorePrivate->BufferSize)) {\r | |
434 | //\r | |
435 | // If CommunicationBuffer is not in valid address scope, return EFI_INVALID_PARAMETER\r | |
436 | //\r | |
437 | gMmCorePrivate->CommunicationBuffer = 0;\r | |
438 | gMmCorePrivate->ReturnStatus = EFI_INVALID_PARAMETER;\r | |
439 | } else {\r | |
440 | CommunicateHeader = (EFI_MM_COMMUNICATE_HEADER *)(UINTN)gMmCorePrivate->CommunicationBuffer;\r | |
441 | gMmCorePrivate->BufferSize -= OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);\r | |
442 | Status = MmiManage (\r | |
443 | &CommunicateHeader->HeaderGuid,\r | |
444 | NULL,\r | |
445 | CommunicateHeader->Data,\r | |
446 | (UINTN *)&gMmCorePrivate->BufferSize\r | |
447 | );\r | |
448 | //\r | |
449 | // Update CommunicationBuffer, BufferSize and ReturnStatus\r | |
450 | // Communicate service finished, reset the pointer to CommBuffer to NULL\r | |
451 | //\r | |
452 | gMmCorePrivate->BufferSize += OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);\r | |
453 | gMmCorePrivate->CommunicationBuffer = 0;\r | |
454 | gMmCorePrivate->ReturnStatus = (Status == EFI_SUCCESS) ? EFI_SUCCESS : EFI_NOT_FOUND;\r | |
455 | }\r | |
456 | }\r | |
457 | }\r | |
458 | \r | |
459 | //\r | |
460 | // Process Asynchronous MMI sources\r | |
461 | //\r | |
462 | MmiManage (NULL, NULL, NULL, NULL);\r | |
463 | \r | |
464 | //\r | |
465 | // TBD: Do not use private data structure ?\r | |
466 | //\r | |
467 | \r | |
468 | //\r | |
469 | // If a legacy boot has occured, then make sure gMmCorePrivate is not accessed\r | |
470 | //\r | |
471 | if (!InLegacyBoot) {\r | |
472 | //\r | |
473 | // Clear the InMm flag as we are going to leave MM\r | |
474 | //\r | |
475 | gMmCorePrivate->InMm = FALSE;\r | |
476 | }\r | |
477 | \r | |
478 | DEBUG ((DEBUG_INFO, "MmEntryPoint Done\n"));\r | |
479 | }\r | |
480 | \r | |
481 | EFI_STATUS\r | |
482 | EFIAPI\r | |
483 | MmConfigurationMmNotify (\r | |
484 | IN CONST EFI_GUID *Protocol,\r | |
485 | IN VOID *Interface,\r | |
486 | IN EFI_HANDLE Handle\r | |
487 | )\r | |
488 | {\r | |
489 | EFI_STATUS Status;\r | |
490 | EFI_MM_CONFIGURATION_PROTOCOL *MmConfiguration;\r | |
491 | \r | |
492 | DEBUG ((DEBUG_INFO, "MmConfigurationMmNotify(%g) - %x\n", Protocol, Interface));\r | |
493 | \r | |
494 | MmConfiguration = Interface;\r | |
495 | \r | |
496 | //\r | |
497 | // Register the MM Entry Point provided by the MM Core with the MM COnfiguration protocol\r | |
498 | //\r | |
499 | Status = MmConfiguration->RegisterMmEntry (MmConfiguration, (EFI_MM_ENTRY_POINT)(UINTN)gMmCorePrivate->MmEntryPoint);\r | |
500 | ASSERT_EFI_ERROR (Status);\r | |
501 | \r | |
502 | //\r | |
503 | // Set flag to indicate that the MM Entry Point has been registered which\r | |
504 | // means that MMIs are now fully operational.\r | |
505 | //\r | |
506 | gMmCorePrivate->MmEntryPointRegistered = TRUE;\r | |
507 | \r | |
508 | //\r | |
509 | // Print debug message showing MM Core entry point address.\r | |
510 | //\r | |
511 | DEBUG ((DEBUG_INFO, "MM Core registered MM Entry Point address %p\n", (VOID *)(UINTN)gMmCorePrivate->MmEntryPoint));\r | |
512 | return EFI_SUCCESS;\r | |
513 | }\r | |
514 | \r | |
515 | UINTN\r | |
516 | GetHobListSize (\r | |
517 | IN VOID *HobStart\r | |
518 | )\r | |
519 | {\r | |
520 | EFI_PEI_HOB_POINTERS Hob;\r | |
521 | \r | |
522 | ASSERT (HobStart != NULL);\r | |
523 | \r | |
524 | Hob.Raw = (UINT8 *) HobStart;\r | |
525 | while (!END_OF_HOB_LIST (Hob)) {\r | |
526 | Hob.Raw = GET_NEXT_HOB (Hob);\r | |
527 | }\r | |
528 | //\r | |
529 | // Need plus END_OF_HOB_LIST\r | |
530 | //\r | |
531 | return (UINTN)Hob.Raw - (UINTN)HobStart + sizeof (EFI_HOB_GENERIC_HEADER);\r | |
532 | }\r | |
533 | \r | |
534 | /**\r | |
535 | The Entry Point for MM Core\r | |
536 | \r | |
537 | Install DXE Protocols and reload MM Core into MMRAM and register MM Core\r | |
538 | EntryPoint on the MMI vector.\r | |
539 | \r | |
540 | Note: This function is called for both DXE invocation and MMRAM invocation.\r | |
541 | \r | |
542 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
543 | @param SystemTable A pointer to the EFI System Table.\r | |
544 | \r | |
545 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
546 | @retval Other Some error occurred when executing this entry point.\r | |
547 | \r | |
548 | **/\r | |
549 | EFI_STATUS\r | |
550 | EFIAPI\r | |
551 | StandaloneMmMain (\r | |
552 | IN VOID *HobStart\r | |
553 | )\r | |
554 | {\r | |
555 | EFI_STATUS Status;\r | |
556 | UINTN Index;\r | |
557 | VOID *MmHobStart;\r | |
558 | UINTN HobSize;\r | |
559 | VOID *Registration;\r | |
560 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
561 | MM_CORE_DATA_HOB_DATA *DataInHob;\r | |
562 | EFI_HOB_GUID_TYPE *MmramRangesHob;\r | |
563 | EFI_MMRAM_HOB_DESCRIPTOR_BLOCK *MmramRangesHobData;\r | |
564 | EFI_MMRAM_DESCRIPTOR *MmramRanges;\r | |
565 | UINT32 MmramRangeCount;\r | |
566 | EFI_HOB_FIRMWARE_VOLUME *BfvHob;\r | |
567 | \r | |
568 | ProcessLibraryConstructorList (HobStart, &gMmCoreMmst);\r | |
569 | \r | |
570 | DEBUG ((DEBUG_INFO, "MmMain - 0x%x\n", HobStart));\r | |
571 | \r | |
572 | //\r | |
573 | // Determine if the caller has passed a reference to a MM_CORE_PRIVATE_DATA\r | |
574 | // structure in the Hoblist. This choice will govern how boot information is\r | |
575 | // extracted later.\r | |
576 | //\r | |
577 | GuidHob = GetNextGuidHob (&gMmCoreDataHobGuid, HobStart);\r | |
578 | if (GuidHob == NULL) {\r | |
579 | //\r | |
580 | // Allocate and zero memory for a MM_CORE_PRIVATE_DATA table and then\r | |
581 | // initialise it\r | |
582 | //\r | |
583 | gMmCorePrivate = (MM_CORE_PRIVATE_DATA *) AllocateRuntimePages(EFI_SIZE_TO_PAGES(sizeof (MM_CORE_PRIVATE_DATA)));\r | |
584 | SetMem ((VOID *)(UINTN)gMmCorePrivate, sizeof (MM_CORE_PRIVATE_DATA), 0);\r | |
585 | gMmCorePrivate->Signature = MM_CORE_PRIVATE_DATA_SIGNATURE;\r | |
586 | gMmCorePrivate->MmEntryPointRegistered = FALSE;\r | |
587 | gMmCorePrivate->InMm = FALSE;\r | |
588 | gMmCorePrivate->ReturnStatus = EFI_SUCCESS;\r | |
589 | \r | |
590 | //\r | |
591 | // Extract the MMRAM ranges from the MMRAM descriptor HOB\r | |
592 | //\r | |
593 | MmramRangesHob = GetNextGuidHob (&gEfiMmPeiMmramMemoryReserveGuid, HobStart);\r | |
594 | if (MmramRangesHob == NULL)\r | |
595 | return EFI_UNSUPPORTED;\r | |
596 | \r | |
597 | MmramRangesHobData = GET_GUID_HOB_DATA (MmramRangesHob);\r | |
598 | ASSERT (MmramRangesHobData != NULL);\r | |
599 | MmramRanges = MmramRangesHobData->Descriptor;\r | |
600 | MmramRangeCount = MmramRangesHobData->NumberOfMmReservedRegions;\r | |
601 | ASSERT (MmramRanges);\r | |
602 | ASSERT (MmramRangeCount);\r | |
603 | \r | |
604 | //\r | |
605 | // Copy the MMRAM ranges into MM_CORE_PRIVATE_DATA table just in case any\r | |
606 | // code relies on them being present there\r | |
607 | //\r | |
608 | gMmCorePrivate->MmramRangeCount = MmramRangeCount;\r | |
609 | gMmCorePrivate->MmramRanges =\r | |
610 | (EFI_PHYSICAL_ADDRESS)(UINTN)AllocatePool (MmramRangeCount * sizeof (EFI_MMRAM_DESCRIPTOR));\r | |
611 | ASSERT (gMmCorePrivate->MmramRanges != 0);\r | |
612 | CopyMem (\r | |
613 | (VOID *)(UINTN)gMmCorePrivate->MmramRanges,\r | |
614 | MmramRanges,\r | |
615 | MmramRangeCount * sizeof (EFI_MMRAM_DESCRIPTOR)\r | |
616 | );\r | |
617 | } else {\r | |
618 | DataInHob = GET_GUID_HOB_DATA (GuidHob);\r | |
619 | gMmCorePrivate = (MM_CORE_PRIVATE_DATA *)(UINTN)DataInHob->Address;\r | |
620 | MmramRanges = (EFI_MMRAM_DESCRIPTOR *)(UINTN)gMmCorePrivate->MmramRanges;\r | |
621 | MmramRangeCount = gMmCorePrivate->MmramRangeCount;\r | |
622 | }\r | |
623 | \r | |
624 | //\r | |
625 | // Print the MMRAM ranges passed by the caller\r | |
626 | //\r | |
627 | DEBUG ((DEBUG_INFO, "MmramRangeCount - 0x%x\n", MmramRangeCount));\r | |
628 | for (Index = 0; Index < MmramRangeCount; Index++) {\r | |
629 | DEBUG ((DEBUG_INFO, "MmramRanges[%d]: 0x%016lx - 0x%lx\n", Index,\r | |
630 | MmramRanges[Index].CpuStart,\r | |
631 | MmramRanges[Index].PhysicalSize));\r | |
632 | }\r | |
633 | \r | |
634 | //\r | |
635 | // Copy the MMRAM ranges into private MMRAM\r | |
636 | //\r | |
637 | mMmramRangeCount = MmramRangeCount;\r | |
638 | DEBUG ((DEBUG_INFO, "mMmramRangeCount - 0x%x\n", mMmramRangeCount));\r | |
639 | mMmramRanges = AllocatePool (mMmramRangeCount * sizeof (EFI_MMRAM_DESCRIPTOR));\r | |
640 | DEBUG ((DEBUG_INFO, "mMmramRanges - 0x%x\n", mMmramRanges));\r | |
641 | ASSERT (mMmramRanges != NULL);\r | |
642 | CopyMem (mMmramRanges, (VOID *)(UINTN)MmramRanges, mMmramRangeCount * sizeof (EFI_MMRAM_DESCRIPTOR));\r | |
643 | \r | |
644 | //\r | |
645 | // Get Boot Firmware Volume address from the BFV Hob\r | |
646 | //\r | |
647 | BfvHob = GetFirstHob (EFI_HOB_TYPE_FV);\r | |
648 | if (BfvHob != NULL) {\r | |
649 | DEBUG ((DEBUG_INFO, "BFV address - 0x%x\n", BfvHob->BaseAddress));\r | |
650 | DEBUG ((DEBUG_INFO, "BFV size - 0x%x\n", BfvHob->Length));\r | |
651 | gMmCorePrivate->StandaloneBfvAddress = BfvHob->BaseAddress;\r | |
652 | }\r | |
653 | \r | |
654 | gMmCorePrivate->Mmst = (EFI_PHYSICAL_ADDRESS)(UINTN)&gMmCoreMmst;\r | |
655 | gMmCorePrivate->MmEntryPoint = (EFI_PHYSICAL_ADDRESS)(UINTN)MmEntryPoint;\r | |
656 | \r | |
657 | //\r | |
658 | // No need to initialize memory service.\r | |
659 | // It is done in constructor of StandaloneMmCoreMemoryAllocationLib(),\r | |
660 | // so that the library linked with StandaloneMmCore can use AllocatePool() in constuctor.\r | |
661 | //\r | |
662 | \r | |
663 | DEBUG ((DEBUG_INFO, "MmInstallConfigurationTable For HobList\n"));\r | |
664 | //\r | |
665 | // Install HobList\r | |
666 | //\r | |
667 | HobSize = GetHobListSize (HobStart);\r | |
668 | DEBUG ((DEBUG_INFO, "HobSize - 0x%x\n", HobSize));\r | |
669 | MmHobStart = AllocatePool (HobSize);\r | |
670 | DEBUG ((DEBUG_INFO, "MmHobStart - 0x%x\n", MmHobStart));\r | |
671 | ASSERT (MmHobStart != NULL);\r | |
672 | CopyMem (MmHobStart, HobStart, HobSize);\r | |
673 | Status = MmInstallConfigurationTable (&gMmCoreMmst, &gEfiHobListGuid, MmHobStart, HobSize);\r | |
674 | ASSERT_EFI_ERROR (Status);\r | |
675 | \r | |
676 | //\r | |
677 | // Register notification for EFI_MM_CONFIGURATION_PROTOCOL registration and\r | |
678 | // use it to register the MM Foundation entrypoint\r | |
679 | //\r | |
680 | DEBUG ((DEBUG_INFO, "MmRegisterProtocolNotify - MmConfigurationMmProtocol\n"));\r | |
681 | Status = MmRegisterProtocolNotify (\r | |
682 | &gEfiMmConfigurationProtocolGuid,\r | |
683 | MmConfigurationMmNotify,\r | |
684 | &Registration\r | |
685 | );\r | |
686 | ASSERT_EFI_ERROR (Status);\r | |
687 | \r | |
688 | //\r | |
689 | // Dispatch standalone BFV\r | |
690 | //\r | |
691 | DEBUG ((DEBUG_INFO, "Mm Dispatch StandaloneBfvAddress - 0x%08x\n", gMmCorePrivate->StandaloneBfvAddress));\r | |
692 | if (gMmCorePrivate->StandaloneBfvAddress != 0) {\r | |
693 | MmCoreFfsFindMmDriver ((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)gMmCorePrivate->StandaloneBfvAddress);\r | |
694 | MmDispatcher ();\r | |
695 | }\r | |
696 | \r | |
697 | //\r | |
698 | // Register all handlers in the core table\r | |
699 | //\r | |
700 | for (Index = 0; mMmCoreMmiHandlers[Index].HandlerType != NULL; Index++) {\r | |
701 | Status = MmiHandlerRegister (\r | |
702 | mMmCoreMmiHandlers[Index].Handler,\r | |
703 | mMmCoreMmiHandlers[Index].HandlerType,\r | |
704 | &mMmCoreMmiHandlers[Index].DispatchHandle\r | |
705 | );\r | |
706 | DEBUG ((DEBUG_INFO, "MmiHandlerRegister - GUID %g - Status %d\n", mMmCoreMmiHandlers[Index].HandlerType, Status));\r | |
707 | }\r | |
708 | \r | |
709 | DEBUG ((DEBUG_INFO, "MmMain Done!\n"));\r | |
710 | \r | |
711 | return EFI_SUCCESS;\r | |
712 | }\r |