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6b46d772 SV |
1 | /** @file\r |
2 | MM Core Main Entry Point\r | |
3 | \r | |
4 | Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r | |
da29388b | 5 | Copyright (c) 2016 - 2021, Arm Limited. All rights reserved.<BR>\r |
86094561 | 6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
6b46d772 SV |
7 | \r |
8 | **/\r | |
9 | \r | |
10 | #include "StandaloneMmCore.h"\r | |
11 | \r | |
12 | EFI_STATUS\r | |
13 | MmCoreFfsFindMmDriver (\r | |
14 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader\r | |
15 | );\r | |
16 | \r | |
17 | EFI_STATUS\r | |
18 | MmDispatcher (\r | |
19 | VOID\r | |
20 | );\r | |
21 | \r | |
22 | //\r | |
23 | // Globals used to initialize the protocol\r | |
24 | //\r | |
91415a36 | 25 | EFI_HANDLE mMmCpuHandle = NULL;\r |
6b46d772 SV |
26 | \r |
27 | //\r | |
28 | // Physical pointer to private structure shared between MM IPL and the MM Core\r | |
29 | //\r | |
30 | MM_CORE_PRIVATE_DATA *gMmCorePrivate;\r | |
31 | \r | |
32 | //\r | |
33 | // MM Core global variable for MM System Table. Only accessed as a physical structure in MMRAM.\r | |
34 | //\r | |
35 | EFI_MM_SYSTEM_TABLE gMmCoreMmst = {\r | |
6b46d772 SV |
36 | // The table header for the MMST.\r |
37 | {\r | |
38 | MM_MMST_SIGNATURE,\r | |
39 | EFI_MM_SYSTEM_TABLE_REVISION,\r | |
40 | sizeof (gMmCoreMmst.Hdr)\r | |
41 | },\r | |
42 | // MmFirmwareVendor\r | |
43 | NULL,\r | |
44 | // MmFirmwareRevision\r | |
45 | 0,\r | |
46 | // MmInstallConfigurationTable\r | |
47 | MmInstallConfigurationTable,\r | |
48 | // I/O Service\r | |
49 | {\r | |
50 | {\r | |
91415a36 MK |
51 | (EFI_MM_CPU_IO)MmEfiNotAvailableYetArg5, // MmMemRead\r |
52 | (EFI_MM_CPU_IO)MmEfiNotAvailableYetArg5 // MmMemWrite\r | |
6b46d772 SV |
53 | },\r |
54 | {\r | |
91415a36 MK |
55 | (EFI_MM_CPU_IO)MmEfiNotAvailableYetArg5, // MmIoRead\r |
56 | (EFI_MM_CPU_IO)MmEfiNotAvailableYetArg5 // MmIoWrite\r | |
6b46d772 SV |
57 | }\r |
58 | },\r | |
59 | // Runtime memory services\r | |
60 | MmAllocatePool,\r | |
61 | MmFreePool,\r | |
62 | MmAllocatePages,\r | |
63 | MmFreePages,\r | |
64 | // MP service\r | |
65 | NULL, // MmStartupThisAp\r | |
66 | 0, // CurrentlyExecutingCpu\r | |
67 | 0, // NumberOfCpus\r | |
68 | NULL, // CpuSaveStateSize\r | |
69 | NULL, // CpuSaveState\r | |
70 | 0, // NumberOfTableEntries\r | |
71 | NULL, // MmConfigurationTable\r | |
72 | MmInstallProtocolInterface,\r | |
73 | MmUninstallProtocolInterface,\r | |
74 | MmHandleProtocol,\r | |
75 | MmRegisterProtocolNotify,\r | |
76 | MmLocateHandle,\r | |
77 | MmLocateProtocol,\r | |
78 | MmiManage,\r | |
79 | MmiHandlerRegister,\r | |
80 | MmiHandlerUnRegister\r | |
81 | };\r | |
82 | \r | |
6b46d772 SV |
83 | //\r |
84 | // Table of MMI Handlers that are registered by the MM Core when it is initialized\r | |
85 | //\r | |
86 | MM_CORE_MMI_HANDLERS mMmCoreMmiHandlers[] = {\r | |
91415a36 MK |
87 | { MmReadyToLockHandler, &gEfiDxeMmReadyToLockProtocolGuid, NULL, TRUE },\r |
88 | { MmEndOfDxeHandler, &gEfiEndOfDxeEventGroupGuid, NULL, FALSE },\r | |
89 | { MmExitBootServiceHandler, &gEfiEventExitBootServicesGuid, NULL, FALSE },\r | |
90 | { MmReadyToBootHandler, &gEfiEventReadyToBootGuid, NULL, FALSE },\r | |
91 | { NULL, NULL, NULL, FALSE },\r | |
6b46d772 SV |
92 | };\r |
93 | \r | |
91415a36 MK |
94 | EFI_SYSTEM_TABLE *mEfiSystemTable;\r |
95 | UINTN mMmramRangeCount;\r | |
96 | EFI_MMRAM_DESCRIPTOR *mMmramRanges;\r | |
6b46d772 SV |
97 | \r |
98 | /**\r | |
99 | Place holder function until all the MM System Table Service are available.\r | |
100 | \r | |
101 | Note: This function is only used by MMRAM invocation. It is never used by DXE invocation.\r | |
102 | \r | |
103 | @param Arg1 Undefined\r | |
104 | @param Arg2 Undefined\r | |
105 | @param Arg3 Undefined\r | |
106 | @param Arg4 Undefined\r | |
107 | @param Arg5 Undefined\r | |
108 | \r | |
109 | @return EFI_NOT_AVAILABLE_YET\r | |
110 | \r | |
111 | **/\r | |
112 | EFI_STATUS\r | |
113 | EFIAPI\r | |
114 | MmEfiNotAvailableYetArg5 (\r | |
91415a36 MK |
115 | UINTN Arg1,\r |
116 | UINTN Arg2,\r | |
117 | UINTN Arg3,\r | |
118 | UINTN Arg4,\r | |
119 | UINTN Arg5\r | |
6b46d772 SV |
120 | )\r |
121 | {\r | |
122 | //\r | |
123 | // This function should never be executed. If it does, then the architectural protocols\r | |
124 | // have not been designed correctly.\r | |
125 | //\r | |
126 | return EFI_NOT_AVAILABLE_YET;\r | |
127 | }\r | |
128 | \r | |
6b46d772 SV |
129 | /**\r |
130 | Software MMI handler that is called when a ExitBoot Service event is signaled.\r | |
131 | \r | |
132 | @param DispatchHandle The unique handle assigned to this handler by MmiHandlerRegister().\r | |
133 | @param Context Points to an optional handler context which was specified when the handler was registered.\r | |
134 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
135 | be conveyed from a non-MM environment into an MM environment.\r | |
136 | @param CommBufferSize The size of the CommBuffer.\r | |
137 | \r | |
138 | @return Status Code\r | |
139 | \r | |
140 | **/\r | |
141 | EFI_STATUS\r | |
142 | EFIAPI\r | |
143 | MmExitBootServiceHandler (\r | |
144 | IN EFI_HANDLE DispatchHandle,\r | |
902e76de MK |
145 | IN CONST VOID *Context OPTIONAL,\r |
146 | IN OUT VOID *CommBuffer OPTIONAL,\r | |
6b46d772 SV |
147 | IN OUT UINTN *CommBufferSize OPTIONAL\r |
148 | )\r | |
149 | {\r | |
91415a36 MK |
150 | EFI_HANDLE MmHandle;\r |
151 | EFI_STATUS Status;\r | |
152 | STATIC BOOLEAN mInExitBootServices = FALSE;\r | |
6b46d772 | 153 | \r |
eff8f7a9 | 154 | Status = EFI_SUCCESS;\r |
6b46d772 SV |
155 | if (!mInExitBootServices) {\r |
156 | MmHandle = NULL;\r | |
91415a36 MK |
157 | Status = MmInstallProtocolInterface (\r |
158 | &MmHandle,\r | |
159 | &gEfiEventExitBootServicesGuid,\r | |
160 | EFI_NATIVE_INTERFACE,\r | |
161 | NULL\r | |
162 | );\r | |
6b46d772 | 163 | }\r |
91415a36 | 164 | \r |
6b46d772 SV |
165 | mInExitBootServices = TRUE;\r |
166 | return Status;\r | |
167 | }\r | |
168 | \r | |
169 | /**\r | |
170 | Software MMI handler that is called when a ExitBoot Service event is signaled.\r | |
171 | \r | |
172 | @param DispatchHandle The unique handle assigned to this handler by MmiHandlerRegister().\r | |
173 | @param Context Points to an optional handler context which was specified when the handler was registered.\r | |
174 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
175 | be conveyed from a non-MM environment into an MM environment.\r | |
176 | @param CommBufferSize The size of the CommBuffer.\r | |
177 | \r | |
178 | @return Status Code\r | |
179 | \r | |
180 | **/\r | |
181 | EFI_STATUS\r | |
182 | EFIAPI\r | |
183 | MmReadyToBootHandler (\r | |
184 | IN EFI_HANDLE DispatchHandle,\r | |
902e76de MK |
185 | IN CONST VOID *Context OPTIONAL,\r |
186 | IN OUT VOID *CommBuffer OPTIONAL,\r | |
6b46d772 SV |
187 | IN OUT UINTN *CommBufferSize OPTIONAL\r |
188 | )\r | |
189 | {\r | |
91415a36 MK |
190 | EFI_HANDLE MmHandle;\r |
191 | EFI_STATUS Status;\r | |
192 | STATIC BOOLEAN mInReadyToBoot = FALSE;\r | |
6b46d772 | 193 | \r |
eff8f7a9 | 194 | Status = EFI_SUCCESS;\r |
6b46d772 SV |
195 | if (!mInReadyToBoot) {\r |
196 | MmHandle = NULL;\r | |
91415a36 MK |
197 | Status = MmInstallProtocolInterface (\r |
198 | &MmHandle,\r | |
199 | &gEfiEventReadyToBootGuid,\r | |
200 | EFI_NATIVE_INTERFACE,\r | |
201 | NULL\r | |
202 | );\r | |
6b46d772 | 203 | }\r |
91415a36 | 204 | \r |
6b46d772 SV |
205 | mInReadyToBoot = TRUE;\r |
206 | return Status;\r | |
207 | }\r | |
208 | \r | |
209 | /**\r | |
210 | Software MMI handler that is called when the DxeMmReadyToLock protocol is added\r | |
211 | or if gEfiEventReadyToBootGuid is signaled. This function unregisters the\r | |
212 | Software SMIs that are nor required after MMRAM is locked and installs the\r | |
213 | MM Ready To Lock Protocol so MM Drivers are informed that MMRAM is about\r | |
214 | to be locked.\r | |
215 | \r | |
216 | @param DispatchHandle The unique handle assigned to this handler by MmiHandlerRegister().\r | |
217 | @param Context Points to an optional handler context which was specified when the handler was registered.\r | |
218 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
219 | be conveyed from a non-MM environment into an MM environment.\r | |
220 | @param CommBufferSize The size of the CommBuffer.\r | |
221 | \r | |
222 | @return Status Code\r | |
223 | \r | |
224 | **/\r | |
225 | EFI_STATUS\r | |
226 | EFIAPI\r | |
227 | MmReadyToLockHandler (\r | |
228 | IN EFI_HANDLE DispatchHandle,\r | |
902e76de MK |
229 | IN CONST VOID *Context OPTIONAL,\r |
230 | IN OUT VOID *CommBuffer OPTIONAL,\r | |
6b46d772 SV |
231 | IN OUT UINTN *CommBufferSize OPTIONAL\r |
232 | )\r | |
233 | {\r | |
234 | EFI_STATUS Status;\r | |
235 | UINTN Index;\r | |
236 | EFI_HANDLE MmHandle;\r | |
237 | \r | |
238 | DEBUG ((DEBUG_INFO, "MmReadyToLockHandler\n"));\r | |
239 | \r | |
240 | //\r | |
241 | // Unregister MMI Handlers that are no longer required after the MM driver dispatch is stopped\r | |
242 | //\r | |
243 | for (Index = 0; mMmCoreMmiHandlers[Index].HandlerType != NULL; Index++) {\r | |
244 | if (mMmCoreMmiHandlers[Index].UnRegister) {\r | |
245 | MmiHandlerUnRegister (mMmCoreMmiHandlers[Index].DispatchHandle);\r | |
246 | }\r | |
247 | }\r | |
248 | \r | |
249 | //\r | |
250 | // Install MM Ready to lock protocol\r | |
251 | //\r | |
252 | MmHandle = NULL;\r | |
91415a36 MK |
253 | Status = MmInstallProtocolInterface (\r |
254 | &MmHandle,\r | |
255 | &gEfiMmReadyToLockProtocolGuid,\r | |
256 | EFI_NATIVE_INTERFACE,\r | |
257 | NULL\r | |
258 | );\r | |
6b46d772 SV |
259 | \r |
260 | //\r | |
261 | // Make sure MM CPU I/O 2 Protocol has been installed into the handle database\r | |
262 | //\r | |
91415a36 | 263 | // Status = MmLocateProtocol (&EFI_MM_CPU_IO_PROTOCOL_GUID, NULL, &Interface);\r |
6b46d772 SV |
264 | \r |
265 | //\r | |
266 | // Print a message on a debug build if the MM CPU I/O 2 Protocol is not installed\r | |
267 | //\r | |
91415a36 MK |
268 | // if (EFI_ERROR (Status)) {\r |
269 | // DEBUG ((DEBUG_ERROR, "\nSMM: SmmCpuIo Arch Protocol not present!!\n"));\r | |
270 | // }\r | |
6b46d772 SV |
271 | \r |
272 | //\r | |
273 | // Assert if the CPU I/O 2 Protocol is not installed\r | |
274 | //\r | |
91415a36 | 275 | // ASSERT_EFI_ERROR (Status);\r |
6b46d772 SV |
276 | \r |
277 | //\r | |
278 | // Display any drivers that were not dispatched because dependency expression\r | |
279 | // evaluated to false if this is a debug build\r | |
280 | //\r | |
91415a36 | 281 | // MmDisplayDiscoveredNotDispatched ();\r |
6b46d772 SV |
282 | \r |
283 | return Status;\r | |
284 | }\r | |
285 | \r | |
286 | /**\r | |
287 | Software MMI handler that is called when the EndOfDxe event is signaled.\r | |
288 | This function installs the MM EndOfDxe Protocol so MM Drivers are informed that\r | |
289 | platform code will invoke 3rd part code.\r | |
290 | \r | |
291 | @param DispatchHandle The unique handle assigned to this handler by MmiHandlerRegister().\r | |
292 | @param Context Points to an optional handler context which was specified when the handler was registered.\r | |
293 | @param CommBuffer A pointer to a collection of data in memory that will\r | |
294 | be conveyed from a non-MM environment into an MM environment.\r | |
295 | @param CommBufferSize The size of the CommBuffer.\r | |
296 | \r | |
297 | @return Status Code\r | |
298 | \r | |
299 | **/\r | |
300 | EFI_STATUS\r | |
301 | EFIAPI\r | |
302 | MmEndOfDxeHandler (\r | |
303 | IN EFI_HANDLE DispatchHandle,\r | |
902e76de MK |
304 | IN CONST VOID *Context OPTIONAL,\r |
305 | IN OUT VOID *CommBuffer OPTIONAL,\r | |
6b46d772 SV |
306 | IN OUT UINTN *CommBufferSize OPTIONAL\r |
307 | )\r | |
308 | {\r | |
309 | EFI_STATUS Status;\r | |
310 | EFI_HANDLE MmHandle;\r | |
311 | \r | |
312 | DEBUG ((DEBUG_INFO, "MmEndOfDxeHandler\n"));\r | |
313 | //\r | |
314 | // Install MM EndOfDxe protocol\r | |
315 | //\r | |
316 | MmHandle = NULL;\r | |
91415a36 MK |
317 | Status = MmInstallProtocolInterface (\r |
318 | &MmHandle,\r | |
319 | &gEfiMmEndOfDxeProtocolGuid,\r | |
320 | EFI_NATIVE_INTERFACE,\r | |
321 | NULL\r | |
322 | );\r | |
6b46d772 SV |
323 | return Status;\r |
324 | }\r | |
325 | \r | |
6b46d772 SV |
326 | /**\r |
327 | The main entry point to MM Foundation.\r | |
328 | \r | |
329 | Note: This function is only used by MMRAM invocation. It is never used by DXE invocation.\r | |
330 | \r | |
331 | @param MmEntryContext Processor information and functionality\r | |
332 | needed by MM Foundation.\r | |
333 | \r | |
334 | **/\r | |
335 | VOID\r | |
336 | EFIAPI\r | |
337 | MmEntryPoint (\r | |
338 | IN CONST EFI_MM_ENTRY_CONTEXT *MmEntryContext\r | |
91415a36 | 339 | )\r |
6b46d772 | 340 | {\r |
91415a36 | 341 | EFI_STATUS Status;\r |
6b46d772 | 342 | EFI_MM_COMMUNICATE_HEADER *CommunicateHeader;\r |
6b46d772 SV |
343 | \r |
344 | DEBUG ((DEBUG_INFO, "MmEntryPoint ...\n"));\r | |
345 | \r | |
346 | //\r | |
347 | // Update MMST using the context\r | |
348 | //\r | |
349 | CopyMem (&gMmCoreMmst.MmStartupThisAp, MmEntryContext, sizeof (EFI_MM_ENTRY_CONTEXT));\r | |
350 | \r | |
351 | //\r | |
352 | // Call platform hook before Mm Dispatch\r | |
353 | //\r | |
91415a36 | 354 | // PlatformHookBeforeMmDispatch ();\r |
6b46d772 SV |
355 | \r |
356 | //\r | |
2a0755a9 | 357 | // If a legacy boot has occurred, then make sure gMmCorePrivate is not accessed\r |
6b46d772 | 358 | //\r |
6b46d772 | 359 | \r |
b2877855 AB |
360 | //\r |
361 | // TBD: Mark the InMm flag as TRUE\r | |
362 | //\r | |
363 | gMmCorePrivate->InMm = TRUE;\r | |
364 | \r | |
365 | //\r | |
366 | // Check to see if this is a Synchronous MMI sent through the MM Communication\r | |
367 | // Protocol or an Asynchronous MMI\r | |
368 | //\r | |
369 | if (gMmCorePrivate->CommunicationBuffer != 0) {\r | |
6b46d772 | 370 | //\r |
b2877855 | 371 | // Synchronous MMI for MM Core or request from Communicate protocol\r |
6b46d772 | 372 | //\r |
b2877855 | 373 | if (!MmIsBufferOutsideMmValid ((UINTN)gMmCorePrivate->CommunicationBuffer, gMmCorePrivate->BufferSize)) {\r |
6b46d772 | 374 | //\r |
b2877855 | 375 | // If CommunicationBuffer is not in valid address scope, return EFI_INVALID_PARAMETER\r |
6b46d772 | 376 | //\r |
b2877855 | 377 | gMmCorePrivate->CommunicationBuffer = 0;\r |
91415a36 | 378 | gMmCorePrivate->ReturnStatus = EFI_INVALID_PARAMETER;\r |
b2877855 | 379 | } else {\r |
91415a36 | 380 | CommunicateHeader = (EFI_MM_COMMUNICATE_HEADER *)(UINTN)gMmCorePrivate->CommunicationBuffer;\r |
b2877855 | 381 | gMmCorePrivate->BufferSize -= OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);\r |
91415a36 MK |
382 | Status = MmiManage (\r |
383 | &CommunicateHeader->HeaderGuid,\r | |
384 | NULL,\r | |
385 | CommunicateHeader->Data,\r | |
386 | (UINTN *)&gMmCorePrivate->BufferSize\r | |
387 | );\r | |
b2877855 AB |
388 | //\r |
389 | // Update CommunicationBuffer, BufferSize and ReturnStatus\r | |
390 | // Communicate service finished, reset the pointer to CommBuffer to NULL\r | |
391 | //\r | |
91415a36 | 392 | gMmCorePrivate->BufferSize += OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data);\r |
b2877855 | 393 | gMmCorePrivate->CommunicationBuffer = 0;\r |
91415a36 | 394 | gMmCorePrivate->ReturnStatus = (Status == EFI_SUCCESS) ? EFI_SUCCESS : EFI_NOT_FOUND;\r |
6b46d772 SV |
395 | }\r |
396 | }\r | |
397 | \r | |
398 | //\r | |
399 | // Process Asynchronous MMI sources\r | |
400 | //\r | |
401 | MmiManage (NULL, NULL, NULL, NULL);\r | |
402 | \r | |
403 | //\r | |
404 | // TBD: Do not use private data structure ?\r | |
405 | //\r | |
406 | \r | |
407 | //\r | |
b2877855 | 408 | // Clear the InMm flag as we are going to leave MM\r |
6b46d772 | 409 | //\r |
b2877855 | 410 | gMmCorePrivate->InMm = FALSE;\r |
6b46d772 SV |
411 | \r |
412 | DEBUG ((DEBUG_INFO, "MmEntryPoint Done\n"));\r | |
413 | }\r | |
414 | \r | |
84096dcc SM |
415 | /** Register the MM Entry Point provided by the MM Core with the\r |
416 | MM Configuration protocol.\r | |
417 | \r | |
418 | @param [in] Protocol Pointer to the protocol.\r | |
419 | @param [in] Interface Pointer to the MM Configuration protocol.\r | |
420 | @param [in] Handle Handle.\r | |
421 | \r | |
422 | @retval EFI_SUCCESS Success.\r | |
423 | **/\r | |
6b46d772 SV |
424 | EFI_STATUS\r |
425 | EFIAPI\r | |
426 | MmConfigurationMmNotify (\r | |
91415a36 MK |
427 | IN CONST EFI_GUID *Protocol,\r |
428 | IN VOID *Interface,\r | |
6b46d772 SV |
429 | IN EFI_HANDLE Handle\r |
430 | )\r | |
431 | {\r | |
91415a36 | 432 | EFI_STATUS Status;\r |
6b46d772 SV |
433 | EFI_MM_CONFIGURATION_PROTOCOL *MmConfiguration;\r |
434 | \r | |
435 | DEBUG ((DEBUG_INFO, "MmConfigurationMmNotify(%g) - %x\n", Protocol, Interface));\r | |
436 | \r | |
437 | MmConfiguration = Interface;\r | |
438 | \r | |
439 | //\r | |
440 | // Register the MM Entry Point provided by the MM Core with the MM COnfiguration protocol\r | |
441 | //\r | |
442 | Status = MmConfiguration->RegisterMmEntry (MmConfiguration, (EFI_MM_ENTRY_POINT)(UINTN)gMmCorePrivate->MmEntryPoint);\r | |
443 | ASSERT_EFI_ERROR (Status);\r | |
444 | \r | |
445 | //\r | |
446 | // Set flag to indicate that the MM Entry Point has been registered which\r | |
447 | // means that MMIs are now fully operational.\r | |
448 | //\r | |
449 | gMmCorePrivate->MmEntryPointRegistered = TRUE;\r | |
450 | \r | |
451 | //\r | |
452 | // Print debug message showing MM Core entry point address.\r | |
453 | //\r | |
454 | DEBUG ((DEBUG_INFO, "MM Core registered MM Entry Point address %p\n", (VOID *)(UINTN)gMmCorePrivate->MmEntryPoint));\r | |
455 | return EFI_SUCCESS;\r | |
456 | }\r | |
457 | \r | |
84096dcc SM |
458 | /** Returns the HOB list size.\r |
459 | \r | |
460 | @param [in] HobStart Pointer to the start of the HOB list.\r | |
461 | \r | |
462 | @retval Size of the HOB list.\r | |
463 | **/\r | |
6b46d772 SV |
464 | UINTN\r |
465 | GetHobListSize (\r | |
91415a36 | 466 | IN VOID *HobStart\r |
6b46d772 SV |
467 | )\r |
468 | {\r | |
469 | EFI_PEI_HOB_POINTERS Hob;\r | |
470 | \r | |
471 | ASSERT (HobStart != NULL);\r | |
472 | \r | |
91415a36 | 473 | Hob.Raw = (UINT8 *)HobStart;\r |
6b46d772 SV |
474 | while (!END_OF_HOB_LIST (Hob)) {\r |
475 | Hob.Raw = GET_NEXT_HOB (Hob);\r | |
476 | }\r | |
91415a36 | 477 | \r |
6b46d772 SV |
478 | //\r |
479 | // Need plus END_OF_HOB_LIST\r | |
480 | //\r | |
481 | return (UINTN)Hob.Raw - (UINTN)HobStart + sizeof (EFI_HOB_GENERIC_HEADER);\r | |
482 | }\r | |
483 | \r | |
484 | /**\r | |
485 | The Entry Point for MM Core\r | |
486 | \r | |
487 | Install DXE Protocols and reload MM Core into MMRAM and register MM Core\r | |
488 | EntryPoint on the MMI vector.\r | |
489 | \r | |
490 | Note: This function is called for both DXE invocation and MMRAM invocation.\r | |
491 | \r | |
84096dcc | 492 | @param HobStart Pointer to the start of the HOB list.\r |
6b46d772 | 493 | \r |
84096dcc SM |
494 | @retval EFI_SUCCESS Success.\r |
495 | @retval EFI_UNSUPPORTED Unsupported operation.\r | |
6b46d772 SV |
496 | **/\r |
497 | EFI_STATUS\r | |
498 | EFIAPI\r | |
499 | StandaloneMmMain (\r | |
500 | IN VOID *HobStart\r | |
501 | )\r | |
502 | {\r | |
503 | EFI_STATUS Status;\r | |
504 | UINTN Index;\r | |
505 | VOID *MmHobStart;\r | |
506 | UINTN HobSize;\r | |
507 | VOID *Registration;\r | |
508 | EFI_HOB_GUID_TYPE *GuidHob;\r | |
509 | MM_CORE_DATA_HOB_DATA *DataInHob;\r | |
510 | EFI_HOB_GUID_TYPE *MmramRangesHob;\r | |
511 | EFI_MMRAM_HOB_DESCRIPTOR_BLOCK *MmramRangesHobData;\r | |
512 | EFI_MMRAM_DESCRIPTOR *MmramRanges;\r | |
1d27e58e | 513 | UINTN MmramRangeCount;\r |
6b46d772 SV |
514 | EFI_HOB_FIRMWARE_VOLUME *BfvHob;\r |
515 | \r | |
516 | ProcessLibraryConstructorList (HobStart, &gMmCoreMmst);\r | |
517 | \r | |
518 | DEBUG ((DEBUG_INFO, "MmMain - 0x%x\n", HobStart));\r | |
519 | \r | |
520 | //\r | |
521 | // Determine if the caller has passed a reference to a MM_CORE_PRIVATE_DATA\r | |
522 | // structure in the Hoblist. This choice will govern how boot information is\r | |
523 | // extracted later.\r | |
524 | //\r | |
525 | GuidHob = GetNextGuidHob (&gMmCoreDataHobGuid, HobStart);\r | |
526 | if (GuidHob == NULL) {\r | |
527 | //\r | |
528 | // Allocate and zero memory for a MM_CORE_PRIVATE_DATA table and then\r | |
529 | // initialise it\r | |
530 | //\r | |
91415a36 | 531 | gMmCorePrivate = (MM_CORE_PRIVATE_DATA *)AllocateRuntimePages (EFI_SIZE_TO_PAGES (sizeof (MM_CORE_PRIVATE_DATA)));\r |
6b46d772 | 532 | SetMem ((VOID *)(UINTN)gMmCorePrivate, sizeof (MM_CORE_PRIVATE_DATA), 0);\r |
91415a36 | 533 | gMmCorePrivate->Signature = MM_CORE_PRIVATE_DATA_SIGNATURE;\r |
6b46d772 | 534 | gMmCorePrivate->MmEntryPointRegistered = FALSE;\r |
91415a36 MK |
535 | gMmCorePrivate->InMm = FALSE;\r |
536 | gMmCorePrivate->ReturnStatus = EFI_SUCCESS;\r | |
6b46d772 SV |
537 | \r |
538 | //\r | |
539 | // Extract the MMRAM ranges from the MMRAM descriptor HOB\r | |
540 | //\r | |
541 | MmramRangesHob = GetNextGuidHob (&gEfiMmPeiMmramMemoryReserveGuid, HobStart);\r | |
91415a36 | 542 | if (MmramRangesHob == NULL) {\r |
6b46d772 | 543 | return EFI_UNSUPPORTED;\r |
91415a36 | 544 | }\r |
6b46d772 SV |
545 | \r |
546 | MmramRangesHobData = GET_GUID_HOB_DATA (MmramRangesHob);\r | |
547 | ASSERT (MmramRangesHobData != NULL);\r | |
91415a36 | 548 | MmramRanges = MmramRangesHobData->Descriptor;\r |
1d27e58e | 549 | MmramRangeCount = (UINTN)MmramRangesHobData->NumberOfMmReservedRegions;\r |
6b46d772 SV |
550 | ASSERT (MmramRanges);\r |
551 | ASSERT (MmramRangeCount);\r | |
552 | \r | |
553 | //\r | |
554 | // Copy the MMRAM ranges into MM_CORE_PRIVATE_DATA table just in case any\r | |
555 | // code relies on them being present there\r | |
556 | //\r | |
1d27e58e | 557 | gMmCorePrivate->MmramRangeCount = (UINT64)MmramRangeCount;\r |
91415a36 | 558 | gMmCorePrivate->MmramRanges =\r |
6b46d772 SV |
559 | (EFI_PHYSICAL_ADDRESS)(UINTN)AllocatePool (MmramRangeCount * sizeof (EFI_MMRAM_DESCRIPTOR));\r |
560 | ASSERT (gMmCorePrivate->MmramRanges != 0);\r | |
561 | CopyMem (\r | |
562 | (VOID *)(UINTN)gMmCorePrivate->MmramRanges,\r | |
563 | MmramRanges,\r | |
564 | MmramRangeCount * sizeof (EFI_MMRAM_DESCRIPTOR)\r | |
565 | );\r | |
566 | } else {\r | |
567 | DataInHob = GET_GUID_HOB_DATA (GuidHob);\r | |
91415a36 | 568 | gMmCorePrivate = (MM_CORE_PRIVATE_DATA *)(UINTN)DataInHob->Address;\r |
6b46d772 | 569 | MmramRanges = (EFI_MMRAM_DESCRIPTOR *)(UINTN)gMmCorePrivate->MmramRanges;\r |
1d27e58e | 570 | MmramRangeCount = (UINTN)gMmCorePrivate->MmramRangeCount;\r |
6b46d772 SV |
571 | }\r |
572 | \r | |
573 | //\r | |
574 | // Print the MMRAM ranges passed by the caller\r | |
575 | //\r | |
576 | DEBUG ((DEBUG_INFO, "MmramRangeCount - 0x%x\n", MmramRangeCount));\r | |
577 | for (Index = 0; Index < MmramRangeCount; Index++) {\r | |
91415a36 MK |
578 | DEBUG ((\r |
579 | DEBUG_INFO,\r | |
580 | "MmramRanges[%d]: 0x%016lx - 0x%lx\n",\r | |
581 | Index,\r | |
582 | MmramRanges[Index].CpuStart,\r | |
583 | MmramRanges[Index].PhysicalSize\r | |
584 | ));\r | |
6b46d772 SV |
585 | }\r |
586 | \r | |
587 | //\r | |
588 | // Copy the MMRAM ranges into private MMRAM\r | |
589 | //\r | |
590 | mMmramRangeCount = MmramRangeCount;\r | |
591 | DEBUG ((DEBUG_INFO, "mMmramRangeCount - 0x%x\n", mMmramRangeCount));\r | |
592 | mMmramRanges = AllocatePool (mMmramRangeCount * sizeof (EFI_MMRAM_DESCRIPTOR));\r | |
593 | DEBUG ((DEBUG_INFO, "mMmramRanges - 0x%x\n", mMmramRanges));\r | |
594 | ASSERT (mMmramRanges != NULL);\r | |
595 | CopyMem (mMmramRanges, (VOID *)(UINTN)MmramRanges, mMmramRangeCount * sizeof (EFI_MMRAM_DESCRIPTOR));\r | |
596 | \r | |
597 | //\r | |
598 | // Get Boot Firmware Volume address from the BFV Hob\r | |
599 | //\r | |
600 | BfvHob = GetFirstHob (EFI_HOB_TYPE_FV);\r | |
601 | if (BfvHob != NULL) {\r | |
602 | DEBUG ((DEBUG_INFO, "BFV address - 0x%x\n", BfvHob->BaseAddress));\r | |
603 | DEBUG ((DEBUG_INFO, "BFV size - 0x%x\n", BfvHob->Length));\r | |
604 | gMmCorePrivate->StandaloneBfvAddress = BfvHob->BaseAddress;\r | |
605 | }\r | |
606 | \r | |
91415a36 | 607 | gMmCorePrivate->Mmst = (EFI_PHYSICAL_ADDRESS)(UINTN)&gMmCoreMmst;\r |
6b46d772 SV |
608 | gMmCorePrivate->MmEntryPoint = (EFI_PHYSICAL_ADDRESS)(UINTN)MmEntryPoint;\r |
609 | \r | |
610 | //\r | |
611 | // No need to initialize memory service.\r | |
da29388b SM |
612 | // It is done in the constructor of StandaloneMmCoreMemoryAllocationLib(),\r |
613 | // so that the library linked with StandaloneMmCore can use AllocatePool() in\r | |
614 | // the constructor.\r | |
6b46d772 SV |
615 | \r |
616 | DEBUG ((DEBUG_INFO, "MmInstallConfigurationTable For HobList\n"));\r | |
617 | //\r | |
618 | // Install HobList\r | |
619 | //\r | |
620 | HobSize = GetHobListSize (HobStart);\r | |
621 | DEBUG ((DEBUG_INFO, "HobSize - 0x%x\n", HobSize));\r | |
622 | MmHobStart = AllocatePool (HobSize);\r | |
623 | DEBUG ((DEBUG_INFO, "MmHobStart - 0x%x\n", MmHobStart));\r | |
624 | ASSERT (MmHobStart != NULL);\r | |
625 | CopyMem (MmHobStart, HobStart, HobSize);\r | |
626 | Status = MmInstallConfigurationTable (&gMmCoreMmst, &gEfiHobListGuid, MmHobStart, HobSize);\r | |
627 | ASSERT_EFI_ERROR (Status);\r | |
628 | \r | |
629 | //\r | |
630 | // Register notification for EFI_MM_CONFIGURATION_PROTOCOL registration and\r | |
631 | // use it to register the MM Foundation entrypoint\r | |
632 | //\r | |
633 | DEBUG ((DEBUG_INFO, "MmRegisterProtocolNotify - MmConfigurationMmProtocol\n"));\r | |
634 | Status = MmRegisterProtocolNotify (\r | |
635 | &gEfiMmConfigurationProtocolGuid,\r | |
636 | MmConfigurationMmNotify,\r | |
637 | &Registration\r | |
638 | );\r | |
639 | ASSERT_EFI_ERROR (Status);\r | |
640 | \r | |
641 | //\r | |
642 | // Dispatch standalone BFV\r | |
643 | //\r | |
644 | DEBUG ((DEBUG_INFO, "Mm Dispatch StandaloneBfvAddress - 0x%08x\n", gMmCorePrivate->StandaloneBfvAddress));\r | |
645 | if (gMmCorePrivate->StandaloneBfvAddress != 0) {\r | |
646 | MmCoreFfsFindMmDriver ((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)gMmCorePrivate->StandaloneBfvAddress);\r | |
647 | MmDispatcher ();\r | |
648 | }\r | |
649 | \r | |
650 | //\r | |
651 | // Register all handlers in the core table\r | |
652 | //\r | |
653 | for (Index = 0; mMmCoreMmiHandlers[Index].HandlerType != NULL; Index++) {\r | |
654 | Status = MmiHandlerRegister (\r | |
655 | mMmCoreMmiHandlers[Index].Handler,\r | |
656 | mMmCoreMmiHandlers[Index].HandlerType,\r | |
657 | &mMmCoreMmiHandlers[Index].DispatchHandle\r | |
658 | );\r | |
659 | DEBUG ((DEBUG_INFO, "MmiHandlerRegister - GUID %g - Status %d\n", mMmCoreMmiHandlers[Index].HandlerType, Status));\r | |
660 | }\r | |
661 | \r | |
662 | DEBUG ((DEBUG_INFO, "MmMain Done!\n"));\r | |
663 | \r | |
664 | return EFI_SUCCESS;\r | |
665 | }\r |