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e42e9404 | 1 | /** @file\r |
2 | SMM IPL that produces SMM related runtime protocols and load the SMM Core into SMRAM\r | |
3 | \r | |
265fff39 | 4 | Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>\r |
e42e9404 | 5 | This program and the accompanying materials are licensed and made available \r |
6 | under the terms and conditions of the BSD License which accompanies this \r | |
7 | distribution. The full text of the license may be found at \r | |
8 | http://opensource.org/licenses/bsd-license.php \r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include <PiDxe.h>\r | |
16 | \r | |
17 | #include <Protocol/SmmBase2.h>\r | |
18 | #include <Protocol/SmmCommunication.h>\r | |
19 | #include <Protocol/SmmAccess2.h>\r | |
20 | #include <Protocol/SmmConfiguration.h>\r | |
21 | #include <Protocol/SmmControl2.h>\r | |
22 | #include <Protocol/DxeSmmReadyToLock.h>\r | |
07d9dc83 | 23 | #include <Protocol/Cpu.h>\r |
e42e9404 | 24 | \r |
25 | #include <Guid/EventGroup.h>\r | |
26 | #include <Guid/EventLegacyBios.h>\r | |
3c447c27 | 27 | #include <Guid/LoadModuleAtFixedAddress.h>\r |
e42e9404 | 28 | \r |
29 | #include <Library/BaseLib.h>\r | |
30 | #include <Library/BaseMemoryLib.h>\r | |
31 | #include <Library/PeCoffLib.h>\r | |
32 | #include <Library/CacheMaintenanceLib.h>\r | |
33 | #include <Library/MemoryAllocationLib.h>\r | |
34 | #include <Library/DebugLib.h>\r | |
35 | #include <Library/UefiBootServicesTableLib.h>\r | |
36 | #include <Library/DxeServicesTableLib.h>\r | |
d7aaf1dc | 37 | #include <Library/DxeServicesLib.h>\r |
e42e9404 | 38 | #include <Library/UefiLib.h>\r |
39 | #include <Library/UefiRuntimeLib.h>\r | |
3c447c27 | 40 | #include <Library/PcdLib.h>\r |
265fff39 | 41 | #include <Library/ReportStatusCodeLib.h>\r |
e42e9404 | 42 | \r |
43 | #include "PiSmmCorePrivateData.h"\r | |
44 | \r | |
45 | //\r | |
46 | // Function prototypes from produced protocols\r | |
47 | //\r | |
48 | \r | |
49 | /**\r | |
50 | Indicate whether the driver is currently executing in the SMM Initialization phase.\r | |
51 | \r | |
52 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r | |
53 | @param InSmram Pointer to a Boolean which, on return, indicates that the driver is currently executing\r | |
54 | inside of SMRAM (TRUE) or outside of SMRAM (FALSE).\r | |
55 | \r | |
56 | @retval EFI_INVALID_PARAMETER InSmram was NULL.\r | |
57 | @retval EFI_SUCCESS The call returned successfully.\r | |
58 | \r | |
59 | **/\r | |
60 | EFI_STATUS\r | |
61 | EFIAPI\r | |
62 | SmmBase2InSmram (\r | |
63 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r | |
64 | OUT BOOLEAN *InSmram\r | |
65 | );\r | |
66 | \r | |
67 | /**\r | |
68 | Retrieves the location of the System Management System Table (SMST).\r | |
69 | \r | |
70 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r | |
71 | @param Smst On return, points to a pointer to the System Management Service Table (SMST).\r | |
72 | \r | |
73 | @retval EFI_INVALID_PARAMETER Smst or This was invalid.\r | |
74 | @retval EFI_SUCCESS The memory was returned to the system.\r | |
75 | @retval EFI_UNSUPPORTED Not in SMM.\r | |
76 | \r | |
77 | **/\r | |
78 | EFI_STATUS\r | |
79 | EFIAPI\r | |
80 | SmmBase2GetSmstLocation (\r | |
81 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r | |
82 | OUT EFI_SMM_SYSTEM_TABLE2 **Smst\r | |
83 | );\r | |
84 | \r | |
85 | /**\r | |
86 | Communicates with a registered handler.\r | |
87 | \r | |
88 | This function provides a service to send and receive messages from a registered \r | |
89 | UEFI service. This function is part of the SMM Communication Protocol that may \r | |
90 | be called in physical mode prior to SetVirtualAddressMap() and in virtual mode \r | |
91 | after SetVirtualAddressMap().\r | |
92 | \r | |
93 | @param[in] This The EFI_SMM_COMMUNICATION_PROTOCOL instance.\r | |
2292758d | 94 | @param[in, out] CommBuffer A pointer to the buffer to convey into SMRAM.\r |
95 | @param[in, out] CommSize The size of the data buffer being passed in.On exit, the size of data\r | |
e42e9404 | 96 | being returned. Zero if the handler does not wish to reply with any data.\r |
97 | \r | |
98 | @retval EFI_SUCCESS The message was successfully posted.\r | |
99 | @retval EFI_INVALID_PARAMETER The CommBuffer was NULL.\r | |
100 | **/\r | |
101 | EFI_STATUS\r | |
102 | EFIAPI\r | |
103 | SmmCommunicationCommunicate (\r | |
104 | IN CONST EFI_SMM_COMMUNICATION_PROTOCOL *This,\r | |
105 | IN OUT VOID *CommBuffer,\r | |
106 | IN OUT UINTN *CommSize\r | |
107 | );\r | |
108 | \r | |
109 | /**\r | |
110 | Event notification that is fired every time a gEfiSmmConfigurationProtocol installs.\r | |
111 | \r | |
112 | @param Event The Event that is being processed, not used.\r | |
113 | @param Context Event Context, not used.\r | |
114 | \r | |
115 | **/\r | |
116 | VOID\r | |
117 | EFIAPI\r | |
118 | SmmIplSmmConfigurationEventNotify (\r | |
119 | IN EFI_EVENT Event,\r | |
120 | IN VOID *Context\r | |
121 | );\r | |
122 | \r | |
123 | /**\r | |
124 | Event notification that is fired every time a DxeSmmReadyToLock protocol is added\r | |
125 | or if gEfiEventReadyToBootGuid is signalled.\r | |
126 | \r | |
127 | @param Event The Event that is being processed, not used.\r | |
128 | @param Context Event Context, not used.\r | |
129 | \r | |
130 | **/\r | |
131 | VOID\r | |
132 | EFIAPI\r | |
133 | SmmIplReadyToLockEventNotify (\r | |
134 | IN EFI_EVENT Event,\r | |
135 | IN VOID *Context\r | |
136 | );\r | |
137 | \r | |
138 | /**\r | |
139 | Event notification that is fired when DxeDispatch Event Group is signaled.\r | |
140 | \r | |
141 | @param Event The Event that is being processed, not used.\r | |
142 | @param Context Event Context, not used.\r | |
143 | \r | |
5657b268 | 144 | **/\r |
145 | VOID\r | |
146 | EFIAPI\r | |
147 | SmmIplDxeDispatchEventNotify (\r | |
148 | IN EFI_EVENT Event,\r | |
149 | IN VOID *Context\r | |
150 | );\r | |
151 | \r | |
152 | /**\r | |
153 | Event notification that is fired when a GUIDed Event Group is signaled.\r | |
154 | \r | |
155 | @param Event The Event that is being processed, not used.\r | |
156 | @param Context Event Context, not used.\r | |
157 | \r | |
e42e9404 | 158 | **/\r |
159 | VOID\r | |
160 | EFIAPI\r | |
161 | SmmIplGuidedEventNotify (\r | |
162 | IN EFI_EVENT Event,\r | |
163 | IN VOID *Context\r | |
164 | );\r | |
165 | \r | |
265fff39 JF |
166 | /**\r |
167 | Event notification that is fired when EndOfDxe Event Group is signaled.\r | |
168 | \r | |
169 | @param Event The Event that is being processed, not used.\r | |
170 | @param Context Event Context, not used.\r | |
171 | \r | |
172 | **/\r | |
173 | VOID\r | |
174 | EFIAPI\r | |
175 | SmmIplEndOfDxeEventNotify (\r | |
176 | IN EFI_EVENT Event,\r | |
177 | IN VOID *Context\r | |
178 | );\r | |
179 | \r | |
e42e9404 | 180 | /**\r |
181 | Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r | |
182 | \r | |
183 | This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r | |
184 | It convers pointer to new virtual address.\r | |
185 | \r | |
186 | @param Event Event whose notification function is being invoked.\r | |
187 | @param Context Pointer to the notification function's context.\r | |
188 | \r | |
189 | **/\r | |
190 | VOID\r | |
191 | EFIAPI\r | |
192 | SmmIplSetVirtualAddressNotify (\r | |
193 | IN EFI_EVENT Event,\r | |
194 | IN VOID *Context\r | |
195 | );\r | |
196 | \r | |
197 | //\r | |
198 | // Data structure used to declare a table of protocol notifications and event \r | |
199 | // notifications required by the SMM IPL\r | |
200 | //\r | |
201 | typedef struct {\r | |
202 | BOOLEAN Protocol;\r | |
203 | BOOLEAN CloseOnLock;\r | |
204 | EFI_GUID *Guid;\r | |
205 | EFI_EVENT_NOTIFY NotifyFunction;\r | |
206 | VOID *NotifyContext;\r | |
5657b268 | 207 | EFI_TPL NotifyTpl;\r |
e42e9404 | 208 | EFI_EVENT Event;\r |
209 | } SMM_IPL_EVENT_NOTIFICATION;\r | |
210 | \r | |
211 | //\r | |
212 | // Handle to install the SMM Base2 Protocol and the SMM Communication Protocol\r | |
213 | //\r | |
214 | EFI_HANDLE mSmmIplHandle = NULL;\r | |
215 | \r | |
216 | //\r | |
217 | // SMM Base 2 Protocol instance\r | |
218 | //\r | |
219 | EFI_SMM_BASE2_PROTOCOL mSmmBase2 = {\r | |
220 | SmmBase2InSmram,\r | |
221 | SmmBase2GetSmstLocation\r | |
222 | };\r | |
223 | \r | |
224 | //\r | |
225 | // SMM Communication Protocol instance\r | |
226 | //\r | |
227 | EFI_SMM_COMMUNICATION_PROTOCOL mSmmCommunication = {\r | |
228 | SmmCommunicationCommunicate\r | |
229 | };\r | |
230 | \r | |
231 | //\r | |
232 | // SMM Core Private Data structure that contains the data shared between\r | |
233 | // the SMM IPL and the SMM Core.\r | |
234 | //\r | |
235 | SMM_CORE_PRIVATE_DATA mSmmCorePrivateData = {\r | |
236 | SMM_CORE_PRIVATE_DATA_SIGNATURE, // Signature\r | |
237 | NULL, // SmmIplImageHandle\r | |
238 | 0, // SmramRangeCount\r | |
239 | NULL, // SmramRanges\r | |
240 | NULL, // SmmEntryPoint\r | |
241 | FALSE, // SmmEntryPointRegistered\r | |
242 | FALSE, // InSmm\r | |
243 | NULL, // Smst\r | |
e42e9404 | 244 | NULL, // CommunicationBuffer\r |
ab780ebf | 245 | 0, // BufferSize\r |
e42e9404 | 246 | EFI_SUCCESS // ReturnStatus\r |
247 | };\r | |
248 | \r | |
249 | //\r | |
250 | // Global pointer used to access mSmmCorePrivateData from outside and inside SMM\r | |
251 | //\r | |
252 | SMM_CORE_PRIVATE_DATA *gSmmCorePrivate = &mSmmCorePrivateData;\r | |
253 | \r | |
254 | //\r | |
255 | // SMM IPL global variables\r | |
256 | //\r | |
257 | EFI_SMM_CONTROL2_PROTOCOL *mSmmControl2;\r | |
258 | EFI_SMM_ACCESS2_PROTOCOL *mSmmAccess;\r | |
259 | EFI_SMRAM_DESCRIPTOR *mCurrentSmramRange;\r | |
260 | BOOLEAN mSmmLocked = FALSE;\r | |
265fff39 | 261 | BOOLEAN mEndOfDxe = FALSE;\r |
40e8cca5 | 262 | EFI_PHYSICAL_ADDRESS mSmramCacheBase;\r |
263 | UINT64 mSmramCacheSize;\r | |
e42e9404 | 264 | \r |
670a563f JY |
265 | EFI_SMM_COMMUNICATE_HEADER mCommunicateHeader;\r |
266 | \r | |
e42e9404 | 267 | //\r |
268 | // Table of Protocol notification and GUIDed Event notifications that the SMM IPL requires\r | |
269 | //\r | |
270 | SMM_IPL_EVENT_NOTIFICATION mSmmIplEvents[] = {\r | |
271 | //\r | |
272 | // Declare protocol notification on the SMM Configuration protocol. When this notification is etablished, \r | |
273 | // the associated event is immediately signalled, so the notification function will be executed and the \r | |
274 | // SMM Configuration Protocol will be found if it is already in the handle database.\r | |
275 | //\r | |
5657b268 | 276 | { TRUE, FALSE, &gEfiSmmConfigurationProtocolGuid, SmmIplSmmConfigurationEventNotify, &gEfiSmmConfigurationProtocolGuid, TPL_NOTIFY, NULL },\r |
e42e9404 | 277 | //\r |
01331951 | 278 | // Declare protocol notification on DxeSmmReadyToLock protocols. When this notification is established, \r |
e42e9404 | 279 | // the associated event is immediately signalled, so the notification function will be executed and the \r |
280 | // DXE SMM Ready To Lock Protocol will be found if it is already in the handle database.\r | |
281 | //\r | |
5657b268 | 282 | { TRUE, TRUE, &gEfiDxeSmmReadyToLockProtocolGuid, SmmIplReadyToLockEventNotify, &gEfiDxeSmmReadyToLockProtocolGuid, TPL_CALLBACK, NULL },\r |
e42e9404 | 283 | //\r |
46ece1ff JY |
284 | // Declare event notification on EndOfDxe event. When this notification is etablished, \r |
285 | // the associated event is immediately signalled, so the notification function will be executed and the \r | |
286 | // SMM End Of Dxe Protocol will be found if it is already in the handle database.\r | |
287 | //\r | |
dc157845 | 288 | { FALSE, TRUE, &gEfiEndOfDxeEventGroupGuid, SmmIplGuidedEventNotify, &gEfiEndOfDxeEventGroupGuid, TPL_CALLBACK, NULL },\r |
46ece1ff | 289 | //\r |
265fff39 JF |
290 | // Declare event notification on EndOfDxe event. This is used to set EndOfDxe event signaled flag.\r |
291 | //\r | |
292 | { FALSE, TRUE, &gEfiEndOfDxeEventGroupGuid, SmmIplEndOfDxeEventNotify, &gEfiEndOfDxeEventGroupGuid, TPL_CALLBACK, NULL },\r | |
293 | //\r | |
e42e9404 | 294 | // Declare event notification on the DXE Dispatch Event Group. This event is signaled by the DXE Core\r |
295 | // each time the DXE Core dispatcher has completed its work. When this event is signalled, the SMM Core\r | |
296 | // if notified, so the SMM Core can dispatch SMM drivers.\r | |
297 | //\r | |
5657b268 | 298 | { FALSE, TRUE, &gEfiEventDxeDispatchGuid, SmmIplDxeDispatchEventNotify, &gEfiEventDxeDispatchGuid, TPL_CALLBACK, NULL },\r |
e42e9404 | 299 | //\r |
300 | // Declare event notification on Ready To Boot Event Group. This is an extra event notification that is\r | |
301 | // used to make sure SMRAM is locked before any boot options are processed.\r | |
302 | //\r | |
5657b268 | 303 | { FALSE, TRUE, &gEfiEventReadyToBootGuid, SmmIplReadyToLockEventNotify, &gEfiEventReadyToBootGuid, TPL_CALLBACK, NULL },\r |
e42e9404 | 304 | //\r |
305 | // Declare event notification on Legacy Boot Event Group. This is used to inform the SMM Core that the platform \r | |
306 | // is performing a legacy boot operation, and that the UEFI environment is no longer available and the SMM Core \r | |
307 | // must guarantee that it does not access any UEFI related structures outside of SMRAM.\r | |
53ec4d7f | 308 | // It is also to inform the SMM Core to notify SMM driver that system enter legacy boot.\r |
e42e9404 | 309 | //\r |
5657b268 | 310 | { FALSE, FALSE, &gEfiEventLegacyBootGuid, SmmIplGuidedEventNotify, &gEfiEventLegacyBootGuid, TPL_CALLBACK, NULL },\r |
e42e9404 | 311 | //\r |
53ec4d7f SZ |
312 | // Declare event notification on Exit Boot Services Event Group. This is used to inform the SMM Core\r |
313 | // to notify SMM driver that system enter exit boot services.\r | |
314 | //\r | |
315 | { FALSE, FALSE, &gEfiEventExitBootServicesGuid, SmmIplGuidedEventNotify, &gEfiEventExitBootServicesGuid, TPL_CALLBACK, NULL },\r | |
316 | //\r | |
317 | // Declare event notification on Ready To Boot Event Group. This is used to inform the SMM Core\r | |
318 | // to notify SMM driver that system enter ready to boot.\r | |
319 | //\r | |
320 | { FALSE, FALSE, &gEfiEventReadyToBootGuid, SmmIplGuidedEventNotify, &gEfiEventReadyToBootGuid, TPL_CALLBACK, NULL },\r | |
321 | //\r | |
e42e9404 | 322 | // Declare event notification on SetVirtualAddressMap() Event Group. This is used to convert gSmmCorePrivate \r |
323 | // and mSmmControl2 from physical addresses to virtual addresses.\r | |
324 | //\r | |
5657b268 | 325 | { FALSE, FALSE, &gEfiEventVirtualAddressChangeGuid, SmmIplSetVirtualAddressNotify, NULL, TPL_CALLBACK, NULL },\r |
e42e9404 | 326 | //\r |
327 | // Terminate the table of event notifications\r | |
328 | //\r | |
5657b268 | 329 | { FALSE, FALSE, NULL, NULL, NULL, TPL_CALLBACK, NULL }\r |
e42e9404 | 330 | };\r |
331 | \r | |
40e8cca5 | 332 | /**\r |
333 | Find the maximum SMRAM cache range that covers the range specified by SmramRange.\r | |
334 | \r | |
335 | This function searches and joins all adjacent ranges of SmramRange into a range to be cached.\r | |
336 | \r | |
337 | @param SmramRange The SMRAM range to search from.\r | |
338 | @param SmramCacheBase The returned cache range base.\r | |
339 | @param SmramCacheSize The returned cache range size.\r | |
340 | \r | |
341 | **/\r | |
342 | VOID\r | |
343 | GetSmramCacheRange (\r | |
344 | IN EFI_SMRAM_DESCRIPTOR *SmramRange,\r | |
345 | OUT EFI_PHYSICAL_ADDRESS *SmramCacheBase,\r | |
346 | OUT UINT64 *SmramCacheSize\r | |
347 | )\r | |
348 | {\r | |
349 | UINTN Index;\r | |
350 | EFI_PHYSICAL_ADDRESS RangeCpuStart;\r | |
351 | UINT64 RangePhysicalSize;\r | |
352 | BOOLEAN FoundAjacentRange;\r | |
353 | \r | |
354 | *SmramCacheBase = SmramRange->CpuStart;\r | |
355 | *SmramCacheSize = SmramRange->PhysicalSize;\r | |
356 | \r | |
357 | do {\r | |
358 | FoundAjacentRange = FALSE;\r | |
359 | for (Index = 0; Index < gSmmCorePrivate->SmramRangeCount; Index++) {\r | |
360 | RangeCpuStart = gSmmCorePrivate->SmramRanges[Index].CpuStart;\r | |
361 | RangePhysicalSize = gSmmCorePrivate->SmramRanges[Index].PhysicalSize;\r | |
362 | if (RangeCpuStart < *SmramCacheBase && *SmramCacheBase == (RangeCpuStart + RangePhysicalSize)) {\r | |
363 | *SmramCacheBase = RangeCpuStart;\r | |
364 | *SmramCacheSize += RangePhysicalSize;\r | |
365 | FoundAjacentRange = TRUE;\r | |
366 | } else if ((*SmramCacheBase + *SmramCacheSize) == RangeCpuStart && RangePhysicalSize > 0) {\r | |
367 | *SmramCacheSize += RangePhysicalSize;\r | |
368 | FoundAjacentRange = TRUE;\r | |
369 | }\r | |
370 | }\r | |
371 | } while (FoundAjacentRange);\r | |
372 | \r | |
373 | }\r | |
374 | \r | |
e42e9404 | 375 | /**\r |
376 | Indicate whether the driver is currently executing in the SMM Initialization phase.\r | |
377 | \r | |
378 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r | |
379 | @param InSmram Pointer to a Boolean which, on return, indicates that the driver is currently executing\r | |
380 | inside of SMRAM (TRUE) or outside of SMRAM (FALSE).\r | |
381 | \r | |
382 | @retval EFI_INVALID_PARAMETER InSmram was NULL.\r | |
383 | @retval EFI_SUCCESS The call returned successfully.\r | |
384 | \r | |
385 | **/\r | |
386 | EFI_STATUS\r | |
387 | EFIAPI\r | |
388 | SmmBase2InSmram (\r | |
389 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r | |
390 | OUT BOOLEAN *InSmram\r | |
391 | )\r | |
392 | {\r | |
393 | if (InSmram == NULL) {\r | |
394 | return EFI_INVALID_PARAMETER;\r | |
395 | }\r | |
396 | \r | |
397 | *InSmram = gSmmCorePrivate->InSmm;\r | |
398 | \r | |
399 | return EFI_SUCCESS;\r | |
400 | }\r | |
401 | \r | |
402 | /**\r | |
403 | Retrieves the location of the System Management System Table (SMST).\r | |
404 | \r | |
405 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r | |
406 | @param Smst On return, points to a pointer to the System Management Service Table (SMST).\r | |
407 | \r | |
408 | @retval EFI_INVALID_PARAMETER Smst or This was invalid.\r | |
409 | @retval EFI_SUCCESS The memory was returned to the system.\r | |
410 | @retval EFI_UNSUPPORTED Not in SMM.\r | |
411 | \r | |
412 | **/\r | |
413 | EFI_STATUS\r | |
414 | EFIAPI\r | |
415 | SmmBase2GetSmstLocation (\r | |
416 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r | |
417 | OUT EFI_SMM_SYSTEM_TABLE2 **Smst\r | |
418 | )\r | |
419 | {\r | |
420 | if ((This == NULL) ||(Smst == NULL)) {\r | |
421 | return EFI_INVALID_PARAMETER;\r | |
422 | }\r | |
423 | \r | |
424 | if (!gSmmCorePrivate->InSmm) {\r | |
425 | return EFI_UNSUPPORTED;\r | |
426 | }\r | |
427 | \r | |
428 | *Smst = gSmmCorePrivate->Smst;\r | |
429 | \r | |
430 | return EFI_SUCCESS;\r | |
431 | }\r | |
432 | \r | |
433 | /**\r | |
434 | Communicates with a registered handler.\r | |
435 | \r | |
436 | This function provides a service to send and receive messages from a registered \r | |
437 | UEFI service. This function is part of the SMM Communication Protocol that may \r | |
438 | be called in physical mode prior to SetVirtualAddressMap() and in virtual mode \r | |
439 | after SetVirtualAddressMap().\r | |
440 | \r | |
441 | @param[in] This The EFI_SMM_COMMUNICATION_PROTOCOL instance.\r | |
2292758d | 442 | @param[in, out] CommBuffer A pointer to the buffer to convey into SMRAM.\r |
443 | @param[in, out] CommSize The size of the data buffer being passed in.On exit, the size of data\r | |
e42e9404 | 444 | being returned. Zero if the handler does not wish to reply with any data.\r |
445 | \r | |
446 | @retval EFI_SUCCESS The message was successfully posted.\r | |
447 | @retval EFI_INVALID_PARAMETER The CommBuffer was NULL.\r | |
448 | **/\r | |
449 | EFI_STATUS\r | |
450 | EFIAPI\r | |
451 | SmmCommunicationCommunicate (\r | |
452 | IN CONST EFI_SMM_COMMUNICATION_PROTOCOL *This,\r | |
453 | IN OUT VOID *CommBuffer,\r | |
454 | IN OUT UINTN *CommSize\r | |
455 | )\r | |
456 | {\r | |
457 | EFI_STATUS Status;\r | |
458 | EFI_SMM_COMMUNICATE_HEADER *CommunicateHeader;\r | |
459 | BOOLEAN OldInSmm;\r | |
460 | \r | |
461 | //\r | |
462 | // Check parameters\r | |
463 | //\r | |
464 | if ((CommBuffer == NULL) || (CommSize == NULL)) {\r | |
465 | return EFI_INVALID_PARAMETER;\r | |
466 | }\r | |
467 | \r | |
ab780ebf JY |
468 | //\r |
469 | // CommSize must hold HeaderGuid and MessageLength\r | |
470 | //\r | |
471 | if (*CommSize < OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)) {\r | |
472 | return EFI_INVALID_PARAMETER;\r | |
473 | }\r | |
474 | \r | |
e42e9404 | 475 | //\r |
476 | // If not already in SMM, then generate a Software SMI\r | |
477 | //\r | |
478 | if (!gSmmCorePrivate->InSmm && gSmmCorePrivate->SmmEntryPointRegistered) {\r | |
479 | //\r | |
480 | // Put arguments for Software SMI in gSmmCorePrivate\r | |
481 | //\r | |
482 | gSmmCorePrivate->CommunicationBuffer = CommBuffer;\r | |
ab780ebf | 483 | gSmmCorePrivate->BufferSize = *CommSize;\r |
e42e9404 | 484 | \r |
485 | //\r | |
486 | // Generate Software SMI\r | |
487 | //\r | |
488 | Status = mSmmControl2->Trigger (mSmmControl2, NULL, NULL, FALSE, 0);\r | |
489 | if (EFI_ERROR (Status)) {\r | |
490 | return EFI_UNSUPPORTED;\r | |
491 | }\r | |
492 | \r | |
493 | //\r | |
494 | // Return status from software SMI \r | |
495 | //\r | |
ab780ebf | 496 | *CommSize = gSmmCorePrivate->BufferSize;\r |
e42e9404 | 497 | return gSmmCorePrivate->ReturnStatus;\r |
498 | }\r | |
499 | \r | |
500 | //\r | |
501 | // If we are in SMM, then the execution mode must be physical, which means that\r | |
502 | // OS established virtual addresses can not be used. If SetVirtualAddressMap()\r | |
503 | // has been called, then a direct invocation of the Software SMI is not \r | |
504 | // not allowed so return EFI_INVALID_PARAMETER.\r | |
505 | //\r | |
506 | if (EfiGoneVirtual()) {\r | |
507 | return EFI_INVALID_PARAMETER;\r | |
508 | }\r | |
509 | \r | |
3c5963cf | 510 | //\r |
96756716 | 511 | // If we are not in SMM, don't allow call SmiManage() directly when SMRAM is closed or locked.\r |
3c5963cf | 512 | //\r |
96756716 | 513 | if ((!gSmmCorePrivate->InSmm) && (!mSmmAccess->OpenState || mSmmAccess->LockState)) {\r |
3c5963cf | 514 | return EFI_INVALID_PARAMETER;\r |
515 | }\r | |
516 | \r | |
e42e9404 | 517 | //\r |
518 | // Save current InSmm state and set InSmm state to TRUE\r | |
519 | //\r | |
520 | OldInSmm = gSmmCorePrivate->InSmm;\r | |
521 | gSmmCorePrivate->InSmm = TRUE;\r | |
522 | \r | |
523 | //\r | |
524 | // Already in SMM and before SetVirtualAddressMap(), so call SmiManage() directly.\r | |
525 | //\r | |
526 | CommunicateHeader = (EFI_SMM_COMMUNICATE_HEADER *)CommBuffer;\r | |
527 | *CommSize -= OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r | |
528 | Status = gSmmCorePrivate->Smst->SmiManage (\r | |
529 | &CommunicateHeader->HeaderGuid, \r | |
530 | NULL, \r | |
531 | CommunicateHeader->Data, \r | |
532 | CommSize\r | |
533 | );\r | |
534 | \r | |
535 | //\r | |
536 | // Update CommunicationBuffer, BufferSize and ReturnStatus\r | |
537 | // Communicate service finished, reset the pointer to CommBuffer to NULL\r | |
538 | //\r | |
539 | *CommSize += OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r | |
540 | \r | |
541 | //\r | |
542 | // Restore original InSmm state\r | |
543 | //\r | |
544 | gSmmCorePrivate->InSmm = OldInSmm;\r | |
545 | \r | |
d5b339a9 | 546 | return (Status == EFI_SUCCESS) ? EFI_SUCCESS : EFI_NOT_FOUND;\r |
e42e9404 | 547 | }\r |
548 | \r | |
549 | /**\r | |
5657b268 | 550 | Event notification that is fired when GUIDed Event Group is signaled.\r |
e42e9404 | 551 | \r |
552 | @param Event The Event that is being processed, not used.\r | |
553 | @param Context Event Context, not used.\r | |
554 | \r | |
555 | **/\r | |
556 | VOID\r | |
557 | EFIAPI\r | |
558 | SmmIplGuidedEventNotify (\r | |
559 | IN EFI_EVENT Event,\r | |
560 | IN VOID *Context\r | |
561 | )\r | |
562 | {\r | |
e42e9404 | 563 | UINTN Size;\r |
564 | \r | |
565 | //\r | |
566 | // Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure \r | |
567 | //\r | |
670a563f JY |
568 | CopyGuid (&mCommunicateHeader.HeaderGuid, (EFI_GUID *)Context);\r |
569 | mCommunicateHeader.MessageLength = 1;\r | |
570 | mCommunicateHeader.Data[0] = 0;\r | |
e42e9404 | 571 | \r |
572 | //\r | |
573 | // Generate the Software SMI and return the result\r | |
574 | //\r | |
670a563f JY |
575 | Size = sizeof (mCommunicateHeader);\r |
576 | SmmCommunicationCommunicate (&mSmmCommunication, &mCommunicateHeader, &Size);\r | |
e42e9404 | 577 | }\r |
578 | \r | |
265fff39 JF |
579 | /**\r |
580 | Event notification that is fired when EndOfDxe Event Group is signaled.\r | |
581 | \r | |
582 | @param Event The Event that is being processed, not used.\r | |
583 | @param Context Event Context, not used.\r | |
584 | \r | |
585 | **/\r | |
586 | VOID\r | |
587 | EFIAPI\r | |
588 | SmmIplEndOfDxeEventNotify (\r | |
589 | IN EFI_EVENT Event,\r | |
590 | IN VOID *Context\r | |
591 | )\r | |
592 | {\r | |
593 | mEndOfDxe = TRUE;\r | |
594 | }\r | |
595 | \r | |
5657b268 | 596 | /**\r |
597 | Event notification that is fired when DxeDispatch Event Group is signaled.\r | |
598 | \r | |
599 | @param Event The Event that is being processed, not used.\r | |
600 | @param Context Event Context, not used.\r | |
601 | \r | |
602 | **/\r | |
603 | VOID\r | |
604 | EFIAPI\r | |
605 | SmmIplDxeDispatchEventNotify (\r | |
606 | IN EFI_EVENT Event,\r | |
607 | IN VOID *Context\r | |
608 | )\r | |
609 | {\r | |
5657b268 | 610 | UINTN Size;\r |
611 | EFI_STATUS Status;\r | |
612 | \r | |
613 | //\r | |
614 | // Keep calling the SMM Core Dispatcher until there is no request to restart it.\r | |
615 | //\r | |
616 | while (TRUE) {\r | |
617 | //\r | |
618 | // Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure\r | |
619 | // Clear the buffer passed into the Software SMI. This buffer will return\r | |
620 | // the status of the SMM Core Dispatcher.\r | |
621 | //\r | |
670a563f JY |
622 | CopyGuid (&mCommunicateHeader.HeaderGuid, (EFI_GUID *)Context);\r |
623 | mCommunicateHeader.MessageLength = 1;\r | |
624 | mCommunicateHeader.Data[0] = 0;\r | |
5657b268 | 625 | \r |
626 | //\r | |
627 | // Generate the Software SMI and return the result\r | |
628 | //\r | |
670a563f JY |
629 | Size = sizeof (mCommunicateHeader);\r |
630 | SmmCommunicationCommunicate (&mSmmCommunication, &mCommunicateHeader, &Size);\r | |
5657b268 | 631 | \r |
632 | //\r | |
633 | // Return if there is no request to restart the SMM Core Dispatcher\r | |
634 | //\r | |
670a563f | 635 | if (mCommunicateHeader.Data[0] != COMM_BUFFER_SMM_DISPATCH_RESTART) {\r |
5657b268 | 636 | return;\r |
637 | }\r | |
638 | \r | |
639 | //\r | |
640 | // Attempt to reset SMRAM cacheability to UC\r | |
641 | // Assume CPU AP is available at this time\r | |
642 | //\r | |
643 | Status = gDS->SetMemorySpaceAttributes(\r | |
644 | mSmramCacheBase, \r | |
645 | mSmramCacheSize,\r | |
646 | EFI_MEMORY_UC\r | |
647 | );\r | |
648 | if (EFI_ERROR (Status)) {\r | |
649 | DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r | |
650 | } \r | |
651 | \r | |
652 | //\r | |
653 | // Close all SMRAM ranges to protect SMRAM\r | |
654 | //\r | |
655 | Status = mSmmAccess->Close (mSmmAccess);\r | |
656 | ASSERT_EFI_ERROR (Status);\r | |
657 | \r | |
658 | //\r | |
659 | // Print debug message that the SMRAM window is now closed.\r | |
660 | //\r | |
661 | DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));\r | |
5657b268 | 662 | }\r |
663 | }\r | |
664 | \r | |
e42e9404 | 665 | /**\r |
666 | Event notification that is fired every time a gEfiSmmConfigurationProtocol installs.\r | |
667 | \r | |
668 | @param Event The Event that is being processed, not used.\r | |
669 | @param Context Event Context, not used.\r | |
670 | \r | |
671 | **/\r | |
672 | VOID\r | |
673 | EFIAPI\r | |
674 | SmmIplSmmConfigurationEventNotify (\r | |
675 | IN EFI_EVENT Event,\r | |
676 | IN VOID *Context\r | |
677 | )\r | |
678 | {\r | |
679 | EFI_STATUS Status;\r | |
680 | EFI_SMM_CONFIGURATION_PROTOCOL *SmmConfiguration;\r | |
681 | \r | |
682 | //\r | |
683 | // Make sure this notification is for this handler\r | |
684 | //\r | |
685 | Status = gBS->LocateProtocol (Context, NULL, (VOID **)&SmmConfiguration);\r | |
686 | if (EFI_ERROR (Status)) {\r | |
687 | return;\r | |
688 | }\r | |
689 | \r | |
690 | //\r | |
691 | // Register the SMM Entry Point provided by the SMM Core with the SMM COnfiguration protocol\r | |
692 | //\r | |
693 | Status = SmmConfiguration->RegisterSmmEntry (SmmConfiguration, gSmmCorePrivate->SmmEntryPoint);\r | |
694 | ASSERT_EFI_ERROR (Status);\r | |
695 | \r | |
696 | //\r | |
5657b268 | 697 | // Set flag to indicate that the SMM Entry Point has been registered which \r |
e42e9404 | 698 | // means that SMIs are now fully operational.\r |
699 | //\r | |
700 | gSmmCorePrivate->SmmEntryPointRegistered = TRUE;\r | |
701 | \r | |
702 | //\r | |
703 | // Print debug message showing SMM Core entry point address.\r | |
704 | //\r | |
705 | DEBUG ((DEBUG_INFO, "SMM IPL registered SMM Entry Point address %p\n", (VOID *)(UINTN)gSmmCorePrivate->SmmEntryPoint));\r | |
e42e9404 | 706 | }\r |
707 | \r | |
708 | /**\r | |
709 | Event notification that is fired every time a DxeSmmReadyToLock protocol is added\r | |
01331951 | 710 | or if gEfiEventReadyToBootGuid is signaled.\r |
e42e9404 | 711 | \r |
712 | @param Event The Event that is being processed, not used.\r | |
713 | @param Context Event Context, not used.\r | |
714 | \r | |
715 | **/\r | |
716 | VOID\r | |
717 | EFIAPI\r | |
718 | SmmIplReadyToLockEventNotify (\r | |
719 | IN EFI_EVENT Event,\r | |
720 | IN VOID *Context\r | |
721 | )\r | |
722 | {\r | |
723 | EFI_STATUS Status;\r | |
724 | VOID *Interface;\r | |
725 | UINTN Index;\r | |
726 | \r | |
727 | //\r | |
728 | // See if we are already locked\r | |
729 | //\r | |
730 | if (mSmmLocked) {\r | |
731 | return;\r | |
732 | }\r | |
733 | \r | |
734 | //\r | |
735 | // Make sure this notification is for this handler\r | |
736 | //\r | |
737 | if (CompareGuid ((EFI_GUID *)Context, &gEfiDxeSmmReadyToLockProtocolGuid)) {\r | |
738 | Status = gBS->LocateProtocol (&gEfiDxeSmmReadyToLockProtocolGuid, NULL, &Interface);\r | |
739 | if (EFI_ERROR (Status)) {\r | |
740 | return;\r | |
741 | }\r | |
742 | } else {\r | |
743 | //\r | |
744 | // If SMM is not locked yet and we got here from gEfiEventReadyToBootGuid being \r | |
01331951 | 745 | // signaled, then gEfiDxeSmmReadyToLockProtocolGuid was not installed as expected.\r |
e42e9404 | 746 | // Print a warning on debug builds.\r |
747 | //\r | |
748 | DEBUG ((DEBUG_WARN, "SMM IPL! DXE SMM Ready To Lock Protocol not installed before Ready To Boot signal\n"));\r | |
749 | }\r | |
750 | \r | |
265fff39 JF |
751 | if (!mEndOfDxe) {\r |
752 | DEBUG ((DEBUG_ERROR, "EndOfDxe Event must be signaled before DxeSmmReadyToLock Protocol installation!\n"));\r | |
753 | REPORT_STATUS_CODE (\r | |
754 | EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED,\r | |
755 | (EFI_SOFTWARE_SMM_DRIVER | EFI_SW_EC_ILLEGAL_SOFTWARE_STATE)\r | |
756 | );\r | |
757 | ASSERT (FALSE);\r | |
758 | }\r | |
759 | \r | |
e42e9404 | 760 | //\r |
761 | // Lock the SMRAM (Note: Locking SMRAM may not be supported on all platforms)\r | |
762 | //\r | |
763 | mSmmAccess->Lock (mSmmAccess);\r | |
f02dfb5a | 764 | \r |
e42e9404 | 765 | //\r |
766 | // Close protocol and event notification events that do not apply after the \r | |
767 | // DXE SMM Ready To Lock Protocol has been installed or the Ready To Boot \r | |
768 | // event has been signalled.\r | |
769 | //\r | |
770 | for (Index = 0; mSmmIplEvents[Index].NotifyFunction != NULL; Index++) {\r | |
771 | if (mSmmIplEvents[Index].CloseOnLock) {\r | |
772 | gBS->CloseEvent (mSmmIplEvents[Index].Event);\r | |
773 | }\r | |
774 | }\r | |
775 | \r | |
776 | //\r | |
777 | // Inform SMM Core that the DxeSmmReadyToLock protocol was installed\r | |
778 | //\r | |
779 | SmmIplGuidedEventNotify (Event, (VOID *)&gEfiDxeSmmReadyToLockProtocolGuid);\r | |
780 | \r | |
781 | //\r | |
782 | // Print debug message that the SMRAM window is now locked.\r | |
783 | //\r | |
784 | DEBUG ((DEBUG_INFO, "SMM IPL locked SMRAM window\n"));\r | |
785 | \r | |
786 | //\r | |
787 | // Set flag so this operation will not be performed again\r | |
788 | //\r | |
789 | mSmmLocked = TRUE;\r | |
790 | }\r | |
791 | \r | |
792 | /**\r | |
793 | Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r | |
794 | \r | |
795 | This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r | |
796 | It convers pointer to new virtual address.\r | |
797 | \r | |
798 | @param Event Event whose notification function is being invoked.\r | |
799 | @param Context Pointer to the notification function's context.\r | |
800 | \r | |
801 | **/\r | |
802 | VOID\r | |
803 | EFIAPI\r | |
804 | SmmIplSetVirtualAddressNotify (\r | |
805 | IN EFI_EVENT Event,\r | |
806 | IN VOID *Context\r | |
807 | )\r | |
808 | {\r | |
809 | EfiConvertPointer (0x0, (VOID **)&mSmmControl2);\r | |
810 | }\r | |
811 | \r | |
3c447c27 | 812 | /**\r |
813 | Get the fixed loadding address from image header assigned by build tool. This function only be called\r | |
814 | when Loading module at Fixed address feature enabled.\r | |
e42e9404 | 815 | \r |
3c447c27 | 816 | @param ImageContext Pointer to the image context structure that describes the PE/COFF\r |
817 | image that needs to be examined by this function.\r | |
818 | @retval EFI_SUCCESS An fixed loading address is assigned to this image by build tools .\r | |
819 | @retval EFI_NOT_FOUND The image has no assigned fixed loadding address.\r | |
820 | **/\r | |
821 | EFI_STATUS\r | |
822 | GetPeCoffImageFixLoadingAssignedAddress(\r | |
823 | IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r | |
824 | )\r | |
825 | {\r | |
826 | UINTN SectionHeaderOffset;\r | |
827 | EFI_STATUS Status;\r | |
828 | EFI_IMAGE_SECTION_HEADER SectionHeader;\r | |
829 | EFI_IMAGE_OPTIONAL_HEADER_UNION *ImgHdr;\r | |
830 | EFI_PHYSICAL_ADDRESS FixLoaddingAddress;\r | |
831 | UINT16 Index;\r | |
832 | UINTN Size;\r | |
833 | UINT16 NumberOfSections;\r | |
834 | EFI_PHYSICAL_ADDRESS SmramBase;\r | |
835 | UINT64 SmmCodeSize;\r | |
836 | UINT64 ValueInSectionHeader;\r | |
837 | //\r | |
838 | // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r | |
839 | //\r | |
840 | SmmCodeSize = EFI_PAGES_TO_SIZE (PcdGet32(PcdLoadFixAddressSmmCodePageNumber));\r | |
841 | \r | |
842 | FixLoaddingAddress = 0;\r | |
843 | Status = EFI_NOT_FOUND;\r | |
844 | SmramBase = mCurrentSmramRange->CpuStart;\r | |
845 | //\r | |
846 | // Get PeHeader pointer\r | |
847 | //\r | |
848 | ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)((CHAR8* )ImageContext->Handle + ImageContext->PeCoffHeaderOffset);\r | |
849 | SectionHeaderOffset = (UINTN)(\r | |
850 | ImageContext->PeCoffHeaderOffset +\r | |
851 | sizeof (UINT32) +\r | |
852 | sizeof (EFI_IMAGE_FILE_HEADER) +\r | |
853 | ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader\r | |
854 | );\r | |
855 | NumberOfSections = ImgHdr->Pe32.FileHeader.NumberOfSections;\r | |
856 | \r | |
857 | //\r | |
858 | // Get base address from the first section header that doesn't point to code section.\r | |
859 | //\r | |
860 | for (Index = 0; Index < NumberOfSections; Index++) {\r | |
861 | //\r | |
862 | // Read section header from file\r | |
863 | //\r | |
864 | Size = sizeof (EFI_IMAGE_SECTION_HEADER);\r | |
865 | Status = ImageContext->ImageRead (\r | |
866 | ImageContext->Handle,\r | |
867 | SectionHeaderOffset,\r | |
868 | &Size,\r | |
869 | &SectionHeader\r | |
870 | );\r | |
871 | if (EFI_ERROR (Status)) {\r | |
872 | return Status;\r | |
873 | }\r | |
874 | \r | |
875 | Status = EFI_NOT_FOUND;\r | |
876 | \r | |
877 | if ((SectionHeader.Characteristics & EFI_IMAGE_SCN_CNT_CODE) == 0) {\r | |
878 | //\r | |
879 | // Build tool saves the offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields in the\r | |
880 | // first section header that doesn't point to code section in image header. And there is an assumption that when the\r | |
881 | // feature is enabled, if a module is assigned a loading address by tools, PointerToRelocations & PointerToLineNumbers\r | |
882 | // fields should NOT be Zero, or else, these 2 fileds should be set to Zero\r | |
883 | //\r | |
884 | ValueInSectionHeader = ReadUnaligned64((UINT64*)&SectionHeader.PointerToRelocations);\r | |
885 | if (ValueInSectionHeader != 0) {\r | |
886 | //\r | |
887 | // Found first section header that doesn't point to code section in which uild tool saves the\r | |
888 | // offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields\r | |
889 | //\r | |
890 | FixLoaddingAddress = (EFI_PHYSICAL_ADDRESS)(SmramBase + (INT64)ValueInSectionHeader);\r | |
891 | \r | |
892 | if (SmramBase + SmmCodeSize > FixLoaddingAddress && SmramBase <= FixLoaddingAddress) {\r | |
893 | //\r | |
894 | // The assigned address is valid. Return the specified loadding address\r | |
895 | //\r | |
896 | ImageContext->ImageAddress = FixLoaddingAddress;\r | |
897 | Status = EFI_SUCCESS;\r | |
898 | }\r | |
899 | }\r | |
900 | break;\r | |
901 | }\r | |
902 | SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);\r | |
903 | }\r | |
904 | DEBUG ((EFI_D_INFO|EFI_D_LOAD, "LOADING MODULE FIXED INFO: Loading module at fixed address %x, Status = %r \n", FixLoaddingAddress, Status));\r | |
905 | return Status;\r | |
906 | }\r | |
e42e9404 | 907 | /**\r |
908 | Load the SMM Core image into SMRAM and executes the SMM Core from SMRAM.\r | |
909 | \r | |
c03beb76 SZ |
910 | @param[in, out] SmramRange Descriptor for the range of SMRAM to reload the \r |
911 | currently executing image, the rang of SMRAM to\r | |
912 | hold SMM Core will be excluded.\r | |
913 | @param[in, out] SmramRangeSmmCore Descriptor for the range of SMRAM to hold SMM Core.\r | |
914 | \r | |
915 | @param[in] Context Context to pass into SMM Core\r | |
e42e9404 | 916 | \r |
917 | @return EFI_STATUS\r | |
918 | \r | |
919 | **/\r | |
920 | EFI_STATUS\r | |
921 | ExecuteSmmCoreFromSmram (\r | |
c03beb76 SZ |
922 | IN OUT EFI_SMRAM_DESCRIPTOR *SmramRange,\r |
923 | IN OUT EFI_SMRAM_DESCRIPTOR *SmramRangeSmmCore,\r | |
924 | IN VOID *Context\r | |
e42e9404 | 925 | )\r |
926 | {\r | |
927 | EFI_STATUS Status;\r | |
928 | VOID *SourceBuffer;\r | |
929 | UINTN SourceSize;\r | |
930 | PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r | |
931 | UINTN PageCount;\r | |
e42e9404 | 932 | EFI_IMAGE_ENTRY_POINT EntryPoint;\r |
933 | \r | |
934 | //\r | |
935 | // Search all Firmware Volumes for a PE/COFF image in a file of type SMM_CORE\r | |
936 | // \r | |
d7aaf1dc LG |
937 | Status = GetSectionFromAnyFvByFileType (\r |
938 | EFI_FV_FILETYPE_SMM_CORE, \r | |
939 | 0,\r | |
940 | EFI_SECTION_PE32, \r | |
941 | 0,\r | |
942 | &SourceBuffer, \r | |
943 | &SourceSize\r | |
944 | );\r | |
945 | if (EFI_ERROR (Status)) {\r | |
946 | return Status;\r | |
e42e9404 | 947 | }\r |
948 | \r | |
949 | //\r | |
950 | // Initilize ImageContext\r | |
951 | //\r | |
952 | ImageContext.Handle = SourceBuffer;\r | |
953 | ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;\r | |
954 | \r | |
955 | //\r | |
956 | // Get information about the image being loaded\r | |
957 | //\r | |
958 | Status = PeCoffLoaderGetImageInfo (&ImageContext);\r | |
959 | if (EFI_ERROR (Status)) {\r | |
960 | return Status;\r | |
961 | }\r | |
e42e9404 | 962 | //\r |
3c447c27 | 963 | // if Loading module at Fixed Address feature is enabled, the SMM core driver will be loaded to \r |
964 | // the address assigned by build tool.\r | |
e42e9404 | 965 | //\r |
3c447c27 | 966 | if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r |
967 | //\r | |
968 | // Get the fixed loading address assigned by Build tool\r | |
969 | //\r | |
970 | Status = GetPeCoffImageFixLoadingAssignedAddress (&ImageContext);\r | |
971 | if (!EFI_ERROR (Status)) {\r | |
972 | //\r | |
973 | // Since the memory range to load SMM CORE will be cut out in SMM core, so no need to allocate and free this range\r | |
974 | //\r | |
975 | PageCount = 0;\r | |
c03beb76 | 976 | } else {\r |
3c447c27 | 977 | DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED ERROR: Loading module at fixed address at address failed\n"));\r |
978 | //\r | |
979 | // Allocate memory for the image being loaded from the EFI_SRAM_DESCRIPTOR \r | |
980 | // specified by SmramRange\r | |
981 | //\r | |
e0e7f80c | 982 | PageCount = (UINTN)EFI_SIZE_TO_PAGES((UINTN)ImageContext.ImageSize + ImageContext.SectionAlignment);\r |
e42e9404 | 983 | \r |
3c447c27 | 984 | ASSERT ((SmramRange->PhysicalSize & EFI_PAGE_MASK) == 0);\r |
985 | ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r | |
e42e9404 | 986 | \r |
3c447c27 | 987 | SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r |
c03beb76 SZ |
988 | SmramRangeSmmCore->CpuStart = SmramRange->CpuStart + SmramRange->PhysicalSize;\r |
989 | SmramRangeSmmCore->PhysicalStart = SmramRange->PhysicalStart + SmramRange->PhysicalSize;\r | |
990 | SmramRangeSmmCore->RegionState = SmramRange->RegionState | EFI_ALLOCATED;\r | |
991 | SmramRangeSmmCore->PhysicalSize = EFI_PAGES_TO_SIZE (PageCount);\r | |
e42e9404 | 992 | \r |
3c447c27 | 993 | //\r |
c03beb76 | 994 | // Align buffer on section boundary\r |
3c447c27 | 995 | //\r |
c03beb76 | 996 | ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r |
3c447c27 | 997 | }\r |
998 | } else {\r | |
999 | //\r | |
1000 | // Allocate memory for the image being loaded from the EFI_SRAM_DESCRIPTOR \r | |
1001 | // specified by SmramRange\r | |
1002 | //\r | |
e0e7f80c | 1003 | PageCount = (UINTN)EFI_SIZE_TO_PAGES((UINTN)ImageContext.ImageSize + ImageContext.SectionAlignment);\r |
3c447c27 | 1004 | \r |
1005 | ASSERT ((SmramRange->PhysicalSize & EFI_PAGE_MASK) == 0);\r | |
1006 | ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r | |
1007 | \r | |
1008 | SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r | |
c03beb76 SZ |
1009 | SmramRangeSmmCore->CpuStart = SmramRange->CpuStart + SmramRange->PhysicalSize;\r |
1010 | SmramRangeSmmCore->PhysicalStart = SmramRange->PhysicalStart + SmramRange->PhysicalSize;\r | |
1011 | SmramRangeSmmCore->RegionState = SmramRange->RegionState | EFI_ALLOCATED;\r | |
1012 | SmramRangeSmmCore->PhysicalSize = EFI_PAGES_TO_SIZE (PageCount);\r | |
3c447c27 | 1013 | \r |
1014 | //\r | |
c03beb76 | 1015 | // Align buffer on section boundary\r |
3c447c27 | 1016 | //\r |
c03beb76 | 1017 | ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r |
3c447c27 | 1018 | }\r |
1019 | \r | |
e42e9404 | 1020 | ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;\r |
6e1e5405 | 1021 | ImageContext.ImageAddress &= ~((EFI_PHYSICAL_ADDRESS)(ImageContext.SectionAlignment - 1));\r |
e42e9404 | 1022 | \r |
1023 | //\r | |
1024 | // Print debug message showing SMM Core load address.\r | |
1025 | //\r | |
1026 | DEBUG ((DEBUG_INFO, "SMM IPL loading SMM Core at SMRAM address %p\n", (VOID *)(UINTN)ImageContext.ImageAddress));\r | |
1027 | \r | |
1028 | //\r | |
1029 | // Load the image to our new buffer\r | |
1030 | //\r | |
1031 | Status = PeCoffLoaderLoadImage (&ImageContext);\r | |
1032 | if (!EFI_ERROR (Status)) {\r | |
1033 | //\r | |
1034 | // Relocate the image in our new buffer\r | |
1035 | //\r | |
1036 | Status = PeCoffLoaderRelocateImage (&ImageContext);\r | |
1037 | if (!EFI_ERROR (Status)) {\r | |
1038 | //\r | |
1039 | // Flush the instruction cache so the image data are written before we execute it\r | |
1040 | //\r | |
1041 | InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize);\r | |
1042 | \r | |
1043 | //\r | |
1044 | // Print debug message showing SMM Core entry point address.\r | |
1045 | //\r | |
1046 | DEBUG ((DEBUG_INFO, "SMM IPL calling SMM Core at SMRAM address %p\n", (VOID *)(UINTN)ImageContext.EntryPoint));\r | |
1047 | \r | |
84edd20b SZ |
1048 | gSmmCorePrivate->PiSmmCoreImageBase = ImageContext.ImageAddress;\r |
1049 | gSmmCorePrivate->PiSmmCoreImageSize = ImageContext.ImageSize;\r | |
1050 | DEBUG ((DEBUG_INFO, "PiSmmCoreImageBase - 0x%016lx\n", gSmmCorePrivate->PiSmmCoreImageBase));\r | |
1051 | DEBUG ((DEBUG_INFO, "PiSmmCoreImageSize - 0x%016lx\n", gSmmCorePrivate->PiSmmCoreImageSize));\r | |
1052 | \r | |
1053 | gSmmCorePrivate->PiSmmCoreEntryPoint = ImageContext.EntryPoint;\r | |
1054 | \r | |
e42e9404 | 1055 | //\r |
1056 | // Execute image\r | |
1057 | //\r | |
1058 | EntryPoint = (EFI_IMAGE_ENTRY_POINT)(UINTN)ImageContext.EntryPoint;\r | |
1059 | Status = EntryPoint ((EFI_HANDLE)Context, gST);\r | |
1060 | }\r | |
1061 | }\r | |
1062 | \r | |
1063 | //\r | |
c03beb76 | 1064 | // Always free memory allocted by GetFileBufferByFilePath ()\r |
e42e9404 | 1065 | //\r |
c03beb76 SZ |
1066 | FreePool (SourceBuffer);\r |
1067 | \r | |
1068 | return Status;\r | |
1069 | }\r | |
1070 | \r | |
1071 | /**\r | |
1072 | SMM split SMRAM entry.\r | |
1073 | \r | |
1074 | @param[in, out] RangeToCompare Pointer to EFI_SMRAM_DESCRIPTOR to compare.\r | |
1075 | @param[in, out] ReservedRangeToCompare Pointer to EFI_SMM_RESERVED_SMRAM_REGION to compare.\r | |
1076 | @param[out] Ranges Output pointer to hold split EFI_SMRAM_DESCRIPTOR entry.\r | |
1077 | @param[in, out] RangeCount Pointer to range count.\r | |
1078 | @param[out] ReservedRanges Output pointer to hold split EFI_SMM_RESERVED_SMRAM_REGION entry.\r | |
1079 | @param[in, out] ReservedRangeCount Pointer to reserved range count.\r | |
1080 | @param[out] FinalRanges Output pointer to hold split final EFI_SMRAM_DESCRIPTOR entry\r | |
1081 | that no need to be split anymore.\r | |
1082 | @param[in, out] FinalRangeCount Pointer to final range count.\r | |
1083 | \r | |
1084 | **/\r | |
1085 | VOID\r | |
1086 | SmmSplitSmramEntry (\r | |
1087 | IN OUT EFI_SMRAM_DESCRIPTOR *RangeToCompare,\r | |
1088 | IN OUT EFI_SMM_RESERVED_SMRAM_REGION *ReservedRangeToCompare,\r | |
1089 | OUT EFI_SMRAM_DESCRIPTOR *Ranges,\r | |
1090 | IN OUT UINTN *RangeCount,\r | |
1091 | OUT EFI_SMM_RESERVED_SMRAM_REGION *ReservedRanges,\r | |
1092 | IN OUT UINTN *ReservedRangeCount,\r | |
1093 | OUT EFI_SMRAM_DESCRIPTOR *FinalRanges,\r | |
1094 | IN OUT UINTN *FinalRangeCount\r | |
1095 | )\r | |
1096 | {\r | |
1097 | UINT64 RangeToCompareEnd;\r | |
1098 | UINT64 ReservedRangeToCompareEnd;\r | |
1099 | \r | |
1100 | RangeToCompareEnd = RangeToCompare->CpuStart + RangeToCompare->PhysicalSize;\r | |
1101 | ReservedRangeToCompareEnd = ReservedRangeToCompare->SmramReservedStart + ReservedRangeToCompare->SmramReservedSize;\r | |
1102 | \r | |
1103 | if ((RangeToCompare->CpuStart >= ReservedRangeToCompare->SmramReservedStart) &&\r | |
1104 | (RangeToCompare->CpuStart < ReservedRangeToCompareEnd)) {\r | |
1105 | if (RangeToCompareEnd < ReservedRangeToCompareEnd) {\r | |
1106 | //\r | |
1107 | // RangeToCompare ReservedRangeToCompare\r | |
1108 | // ---- ---- --------------------------------------\r | |
1109 | // | | | | -> 1. ReservedRangeToCompare\r | |
1110 | // ---- | | |--| --------------------------------------\r | |
1111 | // | | | | | |\r | |
1112 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r | |
1113 | // | | | | | | RangeToCompare->PhysicalSize = 0\r | |
1114 | // ---- | | |--| --------------------------------------\r | |
1115 | // | | | | -> 3. ReservedRanges[*ReservedRangeCount] and increment *ReservedRangeCount\r | |
1116 | // ---- ---- --------------------------------------\r | |
1117 | //\r | |
1118 | \r | |
1119 | //\r | |
1120 | // 1. Update ReservedRangeToCompare.\r | |
1121 | //\r | |
1122 | ReservedRangeToCompare->SmramReservedSize = RangeToCompare->CpuStart - ReservedRangeToCompare->SmramReservedStart;\r | |
1123 | //\r | |
1124 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r | |
1125 | // Zero RangeToCompare->PhysicalSize.\r | |
1126 | //\r | |
1127 | FinalRanges[*FinalRangeCount].CpuStart = RangeToCompare->CpuStart;\r | |
1128 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart;\r | |
1129 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r | |
1130 | FinalRanges[*FinalRangeCount].PhysicalSize = RangeToCompare->PhysicalSize;\r | |
1131 | *FinalRangeCount += 1;\r | |
1132 | RangeToCompare->PhysicalSize = 0;\r | |
1133 | //\r | |
1134 | // 3. Update ReservedRanges[*ReservedRangeCount] and increment *ReservedRangeCount.\r | |
1135 | //\r | |
1136 | ReservedRanges[*ReservedRangeCount].SmramReservedStart = FinalRanges[*FinalRangeCount - 1].CpuStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1137 | ReservedRanges[*ReservedRangeCount].SmramReservedSize = ReservedRangeToCompareEnd - RangeToCompareEnd;\r | |
1138 | *ReservedRangeCount += 1;\r | |
1139 | } else {\r | |
1140 | //\r | |
1141 | // RangeToCompare ReservedRangeToCompare\r | |
1142 | // ---- ---- --------------------------------------\r | |
1143 | // | | | | -> 1. ReservedRangeToCompare\r | |
1144 | // ---- | | |--| --------------------------------------\r | |
1145 | // | | | | | |\r | |
1146 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r | |
1147 | // | | | | | |\r | |
1148 | // | | ---- |--| --------------------------------------\r | |
1149 | // | | | | -> 3. RangeToCompare\r | |
1150 | // ---- ---- --------------------------------------\r | |
1151 | //\r | |
1152 | \r | |
1153 | //\r | |
1154 | // 1. Update ReservedRangeToCompare.\r | |
1155 | //\r | |
1156 | ReservedRangeToCompare->SmramReservedSize = RangeToCompare->CpuStart - ReservedRangeToCompare->SmramReservedStart;\r | |
1157 | //\r | |
1158 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r | |
1159 | //\r | |
1160 | FinalRanges[*FinalRangeCount].CpuStart = RangeToCompare->CpuStart;\r | |
1161 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart;\r | |
1162 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r | |
1163 | FinalRanges[*FinalRangeCount].PhysicalSize = ReservedRangeToCompareEnd - RangeToCompare->CpuStart;\r | |
1164 | *FinalRangeCount += 1;\r | |
1165 | //\r | |
1166 | // 3. Update RangeToCompare.\r | |
1167 | //\r | |
1168 | RangeToCompare->CpuStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1169 | RangeToCompare->PhysicalStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1170 | RangeToCompare->PhysicalSize -= FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1171 | }\r | |
1172 | } else if ((ReservedRangeToCompare->SmramReservedStart >= RangeToCompare->CpuStart) &&\r | |
1173 | (ReservedRangeToCompare->SmramReservedStart < RangeToCompareEnd)) {\r | |
1174 | if (ReservedRangeToCompareEnd < RangeToCompareEnd) {\r | |
1175 | //\r | |
1176 | // RangeToCompare ReservedRangeToCompare\r | |
1177 | // ---- ---- --------------------------------------\r | |
1178 | // | | | | -> 1. RangeToCompare\r | |
1179 | // | | ---- |--| --------------------------------------\r | |
1180 | // | | | | | |\r | |
1181 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r | |
1182 | // | | | | | | ReservedRangeToCompare->SmramReservedSize = 0\r | |
1183 | // | | ---- |--| --------------------------------------\r | |
1184 | // | | | | -> 3. Ranges[*RangeCount] and increment *RangeCount\r | |
1185 | // ---- ---- --------------------------------------\r | |
1186 | //\r | |
1187 | \r | |
1188 | //\r | |
1189 | // 1. Update RangeToCompare.\r | |
1190 | //\r | |
1191 | RangeToCompare->PhysicalSize = ReservedRangeToCompare->SmramReservedStart - RangeToCompare->CpuStart;\r | |
1192 | //\r | |
1193 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r | |
1194 | // ReservedRangeToCompare->SmramReservedSize = 0\r | |
1195 | //\r | |
1196 | FinalRanges[*FinalRangeCount].CpuStart = ReservedRangeToCompare->SmramReservedStart;\r | |
1197 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart + RangeToCompare->PhysicalSize;\r | |
1198 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r | |
1199 | FinalRanges[*FinalRangeCount].PhysicalSize = ReservedRangeToCompare->SmramReservedSize;\r | |
1200 | *FinalRangeCount += 1;\r | |
1201 | ReservedRangeToCompare->SmramReservedSize = 0;\r | |
1202 | //\r | |
1203 | // 3. Update Ranges[*RangeCount] and increment *RangeCount.\r | |
1204 | //\r | |
1205 | Ranges[*RangeCount].CpuStart = FinalRanges[*FinalRangeCount - 1].CpuStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1206 | Ranges[*RangeCount].PhysicalStart = FinalRanges[*FinalRangeCount - 1].PhysicalStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1207 | Ranges[*RangeCount].RegionState = RangeToCompare->RegionState;\r | |
1208 | Ranges[*RangeCount].PhysicalSize = RangeToCompareEnd - ReservedRangeToCompareEnd;\r | |
1209 | *RangeCount += 1;\r | |
1210 | } else {\r | |
1211 | //\r | |
1212 | // RangeToCompare ReservedRangeToCompare\r | |
1213 | // ---- ---- --------------------------------------\r | |
1214 | // | | | | -> 1. RangeToCompare\r | |
1215 | // | | ---- |--| --------------------------------------\r | |
1216 | // | | | | | |\r | |
1217 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r | |
1218 | // | | | | | |\r | |
1219 | // ---- | | |--| --------------------------------------\r | |
1220 | // | | | | -> 3. ReservedRangeToCompare\r | |
1221 | // ---- ---- --------------------------------------\r | |
1222 | //\r | |
1223 | \r | |
1224 | //\r | |
1225 | // 1. Update RangeToCompare.\r | |
1226 | //\r | |
1227 | RangeToCompare->PhysicalSize = ReservedRangeToCompare->SmramReservedStart - RangeToCompare->CpuStart;\r | |
1228 | //\r | |
1229 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r | |
1230 | // ReservedRangeToCompare->SmramReservedSize = 0\r | |
1231 | //\r | |
1232 | FinalRanges[*FinalRangeCount].CpuStart = ReservedRangeToCompare->SmramReservedStart;\r | |
1233 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart + RangeToCompare->PhysicalSize;\r | |
1234 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r | |
1235 | FinalRanges[*FinalRangeCount].PhysicalSize = RangeToCompareEnd - ReservedRangeToCompare->SmramReservedStart;\r | |
1236 | *FinalRangeCount += 1;\r | |
1237 | //\r | |
1238 | // 3. Update ReservedRangeToCompare.\r | |
1239 | //\r | |
1240 | ReservedRangeToCompare->SmramReservedStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1241 | ReservedRangeToCompare->SmramReservedSize -= FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1242 | }\r | |
1243 | }\r | |
1244 | }\r | |
1245 | \r | |
1246 | /**\r | |
1247 | Returns if SMRAM range and SMRAM reserved range are overlapped.\r | |
1248 | \r | |
1249 | @param[in] RangeToCompare Pointer to EFI_SMRAM_DESCRIPTOR to compare.\r | |
1250 | @param[in] ReservedRangeToCompare Pointer to EFI_SMM_RESERVED_SMRAM_REGION to compare.\r | |
1251 | \r | |
1252 | @retval TRUE There is overlap.\r | |
1253 | @retval FALSE There is no overlap.\r | |
1254 | \r | |
1255 | **/\r | |
1256 | BOOLEAN\r | |
1257 | SmmIsSmramOverlap (\r | |
1258 | IN EFI_SMRAM_DESCRIPTOR *RangeToCompare,\r | |
1259 | IN EFI_SMM_RESERVED_SMRAM_REGION *ReservedRangeToCompare\r | |
1260 | )\r | |
1261 | {\r | |
1262 | UINT64 RangeToCompareEnd;\r | |
1263 | UINT64 ReservedRangeToCompareEnd;\r | |
1264 | \r | |
1265 | RangeToCompareEnd = RangeToCompare->CpuStart + RangeToCompare->PhysicalSize;\r | |
1266 | ReservedRangeToCompareEnd = ReservedRangeToCompare->SmramReservedStart + ReservedRangeToCompare->SmramReservedSize;\r | |
1267 | \r | |
1268 | if ((RangeToCompare->CpuStart >= ReservedRangeToCompare->SmramReservedStart) &&\r | |
1269 | (RangeToCompare->CpuStart < ReservedRangeToCompareEnd)) {\r | |
1270 | return TRUE;\r | |
1271 | } else if ((ReservedRangeToCompare->SmramReservedStart >= RangeToCompare->CpuStart) &&\r | |
1272 | (ReservedRangeToCompare->SmramReservedStart < RangeToCompareEnd)) {\r | |
1273 | return TRUE;\r | |
e42e9404 | 1274 | }\r |
c03beb76 SZ |
1275 | return FALSE;\r |
1276 | }\r | |
1277 | \r | |
1278 | /**\r | |
1279 | Get full SMRAM ranges.\r | |
e42e9404 | 1280 | \r |
c03beb76 SZ |
1281 | It will get SMRAM ranges from SmmAccess protocol and SMRAM reserved ranges from\r |
1282 | SmmConfiguration protocol, split the entries if there is overlap between them.\r | |
1283 | It will also reserve one entry for SMM core.\r | |
1284 | \r | |
1285 | @param[out] FullSmramRangeCount Output pointer to full SMRAM range count.\r | |
1286 | \r | |
1287 | @return Pointer to full SMRAM ranges.\r | |
1288 | \r | |
1289 | **/\r | |
1290 | EFI_SMRAM_DESCRIPTOR *\r | |
1291 | GetFullSmramRanges (\r | |
1292 | OUT UINTN *FullSmramRangeCount\r | |
1293 | )\r | |
1294 | {\r | |
1295 | EFI_STATUS Status;\r | |
1296 | EFI_SMM_CONFIGURATION_PROTOCOL *SmmConfiguration;\r | |
1297 | UINTN Size;\r | |
1298 | UINTN Index;\r | |
1299 | UINTN Index2;\r | |
1300 | EFI_SMRAM_DESCRIPTOR *FullSmramRanges;\r | |
1301 | UINTN TempSmramRangeCount;\r | |
1302 | EFI_SMRAM_DESCRIPTOR *TempSmramRanges;\r | |
1303 | UINTN SmramRangeCount;\r | |
1304 | EFI_SMRAM_DESCRIPTOR *SmramRanges;\r | |
1305 | UINTN SmramReservedCount;\r | |
1306 | EFI_SMM_RESERVED_SMRAM_REGION *SmramReservedRanges;\r | |
1307 | UINTN MaxCount;\r | |
1308 | BOOLEAN Rescan;\r | |
1309 | \r | |
1310 | //\r | |
1311 | // Get SMM Configuration Protocol if it is present.\r | |
e42e9404 | 1312 | //\r |
c03beb76 SZ |
1313 | SmmConfiguration = NULL;\r |
1314 | Status = gBS->LocateProtocol (&gEfiSmmConfigurationProtocolGuid, NULL, (VOID **) &SmmConfiguration);\r | |
1315 | \r | |
e42e9404 | 1316 | //\r |
c03beb76 SZ |
1317 | // Get SMRAM information.\r |
1318 | //\r | |
1319 | Size = 0;\r | |
1320 | Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, NULL);\r | |
1321 | ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r | |
e42e9404 | 1322 | \r |
c03beb76 SZ |
1323 | SmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);\r |
1324 | \r | |
1325 | //\r | |
1326 | // Get SMRAM reserved region count.\r | |
1327 | //\r | |
1328 | SmramReservedCount = 0;\r | |
1329 | if (SmmConfiguration != NULL) {\r | |
1330 | while (SmmConfiguration->SmramReservedRegions[SmramReservedCount].SmramReservedSize != 0) {\r | |
1331 | SmramReservedCount++;\r | |
1332 | }\r | |
1333 | }\r | |
1334 | \r | |
1335 | if (SmramReservedCount == 0) {\r | |
1336 | //\r | |
1337 | // No reserved SMRAM entry from SMM Configuration Protocol.\r | |
1338 | // Reserve one entry for SMM Core in the full SMRAM ranges.\r | |
1339 | //\r | |
1340 | *FullSmramRangeCount = SmramRangeCount + 1;\r | |
1341 | Size = (*FullSmramRangeCount) * sizeof (EFI_SMRAM_DESCRIPTOR);\r | |
08308fc9 | 1342 | FullSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocateZeroPool (Size);\r |
c03beb76 SZ |
1343 | ASSERT (FullSmramRanges != NULL);\r |
1344 | \r | |
1345 | Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, FullSmramRanges);\r | |
1346 | ASSERT_EFI_ERROR (Status);\r | |
1347 | \r | |
1348 | return FullSmramRanges;\r | |
1349 | }\r | |
1350 | \r | |
1351 | //\r | |
1352 | // Why MaxCount = X + 2 * Y?\r | |
1353 | // Take Y = 1 as example below, Y > 1 case is just the iteration of Y = 1.\r | |
1354 | //\r | |
1355 | // X = 1 Y = 1 MaxCount = 3 = 1 + 2 * 1\r | |
1356 | // ---- ----\r | |
1357 | // | | ---- |--|\r | |
1358 | // | | | | -> | |\r | |
1359 | // | | ---- |--|\r | |
1360 | // ---- ----\r | |
1361 | //\r | |
1362 | // X = 2 Y = 1 MaxCount = 4 = 2 + 2 * 1\r | |
1363 | // ---- ----\r | |
1364 | // | | | |\r | |
1365 | // | | ---- |--|\r | |
1366 | // | | | | | |\r | |
1367 | // |--| | | -> |--|\r | |
1368 | // | | | | | |\r | |
1369 | // | | ---- |--|\r | |
1370 | // | | | |\r | |
1371 | // ---- ----\r | |
1372 | //\r | |
1373 | // X = 3 Y = 1 MaxCount = 5 = 3 + 2 * 1\r | |
1374 | // ---- ----\r | |
1375 | // | | | |\r | |
1376 | // | | ---- |--|\r | |
1377 | // |--| | | |--|\r | |
1378 | // | | | | -> | |\r | |
1379 | // |--| | | |--|\r | |
1380 | // | | ---- |--|\r | |
1381 | // | | | |\r | |
1382 | // ---- ----\r | |
1383 | //\r | |
1384 | // ......\r | |
1385 | //\r | |
1386 | MaxCount = SmramRangeCount + 2 * SmramReservedCount;\r | |
1387 | \r | |
1388 | Size = MaxCount * sizeof (EFI_SMM_RESERVED_SMRAM_REGION);\r | |
1389 | SmramReservedRanges = (EFI_SMM_RESERVED_SMRAM_REGION *) AllocatePool (Size);\r | |
1390 | ASSERT (SmramReservedRanges != NULL);\r | |
1391 | for (Index = 0; Index < SmramReservedCount; Index++) {\r | |
1392 | CopyMem (&SmramReservedRanges[Index], &SmmConfiguration->SmramReservedRegions[Index], sizeof (EFI_SMM_RESERVED_SMRAM_REGION));\r | |
1393 | }\r | |
1394 | \r | |
1395 | Size = MaxCount * sizeof (EFI_SMRAM_DESCRIPTOR);\r | |
1396 | TempSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocatePool (Size);\r | |
1397 | ASSERT (TempSmramRanges != NULL);\r | |
1398 | TempSmramRangeCount = 0;\r | |
1399 | \r | |
1400 | SmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocatePool (Size);\r | |
1401 | ASSERT (SmramRanges != NULL);\r | |
1402 | Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, SmramRanges);\r | |
1403 | ASSERT_EFI_ERROR (Status);\r | |
1404 | \r | |
1405 | do {\r | |
1406 | Rescan = FALSE;\r | |
1407 | for (Index = 0; (Index < SmramRangeCount) && !Rescan; Index++) {\r | |
1408 | //\r | |
1409 | // Skip zero size entry.\r | |
1410 | //\r | |
1411 | if (SmramRanges[Index].PhysicalSize != 0) {\r | |
1412 | for (Index2 = 0; (Index2 < SmramReservedCount) && !Rescan; Index2++) {\r | |
1413 | //\r | |
1414 | // Skip zero size entry.\r | |
1415 | //\r | |
1416 | if (SmramReservedRanges[Index2].SmramReservedSize != 0) {\r | |
1417 | if (SmmIsSmramOverlap (\r | |
1418 | &SmramRanges[Index],\r | |
1419 | &SmramReservedRanges[Index2]\r | |
1420 | )) {\r | |
1421 | //\r | |
1422 | // There is overlap, need to split entry and then rescan.\r | |
1423 | //\r | |
1424 | SmmSplitSmramEntry (\r | |
1425 | &SmramRanges[Index],\r | |
1426 | &SmramReservedRanges[Index2],\r | |
1427 | SmramRanges,\r | |
1428 | &SmramRangeCount,\r | |
1429 | SmramReservedRanges,\r | |
1430 | &SmramReservedCount,\r | |
1431 | TempSmramRanges,\r | |
1432 | &TempSmramRangeCount\r | |
1433 | );\r | |
1434 | Rescan = TRUE;\r | |
1435 | }\r | |
1436 | }\r | |
1437 | }\r | |
1438 | if (!Rescan) {\r | |
1439 | //\r | |
1440 | // No any overlap, copy the entry to the temp SMRAM ranges.\r | |
1441 | // Zero SmramRanges[Index].PhysicalSize = 0;\r | |
1442 | //\r | |
1443 | CopyMem (&TempSmramRanges[TempSmramRangeCount++], &SmramRanges[Index], sizeof (EFI_SMRAM_DESCRIPTOR));\r | |
1444 | SmramRanges[Index].PhysicalSize = 0;\r | |
1445 | }\r | |
1446 | }\r | |
1447 | }\r | |
1448 | } while (Rescan);\r | |
1449 | ASSERT (TempSmramRangeCount <= MaxCount);\r | |
1450 | \r | |
1451 | //\r | |
1452 | // Sort the entries,\r | |
1453 | // and reserve one entry for SMM Core in the full SMRAM ranges.\r | |
1454 | //\r | |
08308fc9 | 1455 | FullSmramRanges = AllocateZeroPool ((TempSmramRangeCount + 1) * sizeof (EFI_SMRAM_DESCRIPTOR));\r |
c03beb76 SZ |
1456 | ASSERT (FullSmramRanges != NULL);\r |
1457 | *FullSmramRangeCount = 0;\r | |
1458 | do {\r | |
1459 | for (Index = 0; Index < TempSmramRangeCount; Index++) {\r | |
1460 | if (TempSmramRanges[Index].PhysicalSize != 0) {\r | |
1461 | break;\r | |
1462 | }\r | |
1463 | }\r | |
1464 | ASSERT (Index < TempSmramRangeCount);\r | |
1465 | for (Index2 = 0; Index2 < TempSmramRangeCount; Index2++) {\r | |
1466 | if ((Index2 != Index) && (TempSmramRanges[Index2].PhysicalSize != 0) && (TempSmramRanges[Index2].CpuStart < TempSmramRanges[Index].CpuStart)) {\r | |
1467 | Index = Index2;\r | |
1468 | }\r | |
1469 | }\r | |
1470 | CopyMem (&FullSmramRanges[*FullSmramRangeCount], &TempSmramRanges[Index], sizeof (EFI_SMRAM_DESCRIPTOR));\r | |
1471 | *FullSmramRangeCount += 1;\r | |
1472 | TempSmramRanges[Index].PhysicalSize = 0;\r | |
1473 | } while (*FullSmramRangeCount < TempSmramRangeCount);\r | |
1474 | ASSERT (*FullSmramRangeCount == TempSmramRangeCount);\r | |
1475 | *FullSmramRangeCount += 1;\r | |
1476 | \r | |
1477 | FreePool (SmramRanges);\r | |
1478 | FreePool (SmramReservedRanges);\r | |
1479 | FreePool (TempSmramRanges);\r | |
1480 | \r | |
1481 | return FullSmramRanges;\r | |
e42e9404 | 1482 | }\r |
1483 | \r | |
1484 | /**\r | |
1485 | The Entry Point for SMM IPL\r | |
1486 | \r | |
1487 | Load SMM Core into SMRAM, register SMM Core entry point for SMIs, install \r | |
1488 | SMM Base 2 Protocol and SMM Communication Protocol, and register for the \r | |
1489 | critical events required to coordinate between DXE and SMM environments.\r | |
1490 | \r | |
1491 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
1492 | @param SystemTable A pointer to the EFI System Table.\r | |
1493 | \r | |
1494 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
1495 | @retval Other Some error occurred when executing this entry point.\r | |
1496 | \r | |
1497 | **/\r | |
1498 | EFI_STATUS\r | |
1499 | EFIAPI\r | |
1500 | SmmIplEntry (\r | |
1501 | IN EFI_HANDLE ImageHandle,\r | |
1502 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1503 | )\r | |
1504 | {\r | |
1505 | EFI_STATUS Status;\r | |
e42e9404 | 1506 | UINTN Index;\r |
e42e9404 | 1507 | UINT64 MaxSize;\r |
1508 | VOID *Registration;\r | |
07d9dc83 | 1509 | UINT64 SmmCodeSize;\r |
3c447c27 | 1510 | EFI_LOAD_FIXED_ADDRESS_CONFIGURATION_TABLE *LMFAConfigurationTable;\r |
07d9dc83 | 1511 | EFI_CPU_ARCH_PROTOCOL *CpuArch;\r |
b07ea4c1 | 1512 | EFI_STATUS SetAttrStatus;\r |
e42e9404 | 1513 | \r |
1514 | //\r | |
1515 | // Fill in the image handle of the SMM IPL so the SMM Core can use this as the \r | |
1516 | // ParentImageHandle field of the Load Image Protocol for all SMM Drivers loaded \r | |
1517 | // by the SMM Core\r | |
1518 | //\r | |
1519 | mSmmCorePrivateData.SmmIplImageHandle = ImageHandle;\r | |
1520 | \r | |
1521 | //\r | |
1522 | // Get SMM Access Protocol\r | |
1523 | //\r | |
1524 | Status = gBS->LocateProtocol (&gEfiSmmAccess2ProtocolGuid, NULL, (VOID **)&mSmmAccess);\r | |
1525 | ASSERT_EFI_ERROR (Status);\r | |
1526 | \r | |
1527 | //\r | |
1528 | // Get SMM Control2 Protocol\r | |
1529 | //\r | |
1530 | Status = gBS->LocateProtocol (&gEfiSmmControl2ProtocolGuid, NULL, (VOID **)&mSmmControl2);\r | |
1531 | ASSERT_EFI_ERROR (Status);\r | |
1532 | \r | |
c03beb76 | 1533 | gSmmCorePrivate->SmramRanges = GetFullSmramRanges (&gSmmCorePrivate->SmramRangeCount);\r |
84edd20b | 1534 | \r |
e42e9404 | 1535 | //\r |
1536 | // Open all SMRAM ranges\r | |
1537 | //\r | |
1538 | Status = mSmmAccess->Open (mSmmAccess);\r | |
1539 | ASSERT_EFI_ERROR (Status);\r | |
1540 | \r | |
1541 | //\r | |
1542 | // Print debug message that the SMRAM window is now open.\r | |
1543 | //\r | |
1544 | DEBUG ((DEBUG_INFO, "SMM IPL opened SMRAM window\n"));\r | |
e42e9404 | 1545 | \r |
1546 | //\r | |
06b07ce3 | 1547 | // Find the largest SMRAM range between 1MB and 4GB that is at least 256KB - 4K in size\r |
e42e9404 | 1548 | //\r |
1549 | mCurrentSmramRange = NULL;\r | |
06b07ce3 | 1550 | for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < gSmmCorePrivate->SmramRangeCount; Index++) {\r |
2c0f06f0 | 1551 | //\r |
1552 | // Skip any SMRAM region that is already allocated, needs testing, or needs ECC initialization\r | |
1553 | //\r | |
1554 | if ((gSmmCorePrivate->SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {\r | |
1555 | continue;\r | |
1556 | }\r | |
1557 | \r | |
e42e9404 | 1558 | if (gSmmCorePrivate->SmramRanges[Index].CpuStart >= BASE_1MB) {\r |
10e4e4f6 | 1559 | if ((gSmmCorePrivate->SmramRanges[Index].CpuStart + gSmmCorePrivate->SmramRanges[Index].PhysicalSize - 1) <= MAX_ADDRESS) {\r |
e42e9404 | 1560 | if (gSmmCorePrivate->SmramRanges[Index].PhysicalSize >= MaxSize) {\r |
1561 | MaxSize = gSmmCorePrivate->SmramRanges[Index].PhysicalSize;\r | |
1562 | mCurrentSmramRange = &gSmmCorePrivate->SmramRanges[Index];\r | |
1563 | }\r | |
1564 | }\r | |
1565 | }\r | |
1566 | }\r | |
1567 | \r | |
1568 | if (mCurrentSmramRange != NULL) {\r | |
1569 | //\r | |
1570 | // Print debug message showing SMRAM window that will be used by SMM IPL and SMM Core\r | |
1571 | //\r | |
1572 | DEBUG ((DEBUG_INFO, "SMM IPL found SMRAM window %p - %p\n", \r | |
1573 | (VOID *)(UINTN)mCurrentSmramRange->CpuStart, \r | |
1574 | (VOID *)(UINTN)(mCurrentSmramRange->CpuStart + mCurrentSmramRange->PhysicalSize - 1)\r | |
1575 | ));\r | |
1576 | \r | |
40e8cca5 | 1577 | GetSmramCacheRange (mCurrentSmramRange, &mSmramCacheBase, &mSmramCacheSize);\r |
e42e9404 | 1578 | //\r |
07d9dc83 | 1579 | // If CPU AP is present, attempt to set SMRAM cacheability to WB\r |
1580 | // Note that it is expected that cacheability of SMRAM has been set to WB if CPU AP\r | |
1581 | // is not available here.\r | |
e42e9404 | 1582 | //\r |
0a6c0905 | 1583 | CpuArch = NULL;\r |
07d9dc83 | 1584 | Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&CpuArch);\r |
1585 | if (!EFI_ERROR (Status)) {\r | |
1586 | Status = gDS->SetMemorySpaceAttributes(\r | |
1587 | mSmramCacheBase, \r | |
1588 | mSmramCacheSize,\r | |
1589 | EFI_MEMORY_WB\r | |
1590 | );\r | |
1591 | if (EFI_ERROR (Status)) {\r | |
1592 | DEBUG ((DEBUG_WARN, "SMM IPL failed to set SMRAM window to EFI_MEMORY_WB\n"));\r | |
1593 | } \r | |
1594 | }\r | |
3c447c27 | 1595 | //\r |
1596 | // if Loading module at Fixed Address feature is enabled, save the SMRAM base to Load\r | |
1597 | // Modules At Fixed Address Configuration Table.\r | |
1598 | //\r | |
1599 | if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r | |
1600 | //\r | |
1601 | // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r | |
1602 | //\r | |
1603 | SmmCodeSize = LShiftU64 (PcdGet32(PcdLoadFixAddressSmmCodePageNumber), EFI_PAGE_SHIFT);\r | |
1604 | //\r | |
1605 | // The SMRAM available memory is assumed to be larger than SmmCodeSize\r | |
1606 | //\r | |
1607 | ASSERT (mCurrentSmramRange->PhysicalSize > SmmCodeSize);\r | |
1608 | //\r | |
1609 | // Retrieve Load modules At fixed address configuration table and save the SMRAM base.\r | |
1610 | //\r | |
1611 | Status = EfiGetSystemConfigurationTable (\r | |
1612 | &gLoadFixedAddressConfigurationTableGuid,\r | |
1613 | (VOID **) &LMFAConfigurationTable\r | |
1614 | );\r | |
1615 | if (!EFI_ERROR (Status) && LMFAConfigurationTable != NULL) {\r | |
1616 | LMFAConfigurationTable->SmramBase = mCurrentSmramRange->CpuStart;\r | |
2d5ac154 | 1617 | //\r |
1618 | // Print the SMRAM base\r | |
1619 | //\r | |
1620 | DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: TSEG BASE is %x. \n", LMFAConfigurationTable->SmramBase));\r | |
3c447c27 | 1621 | }\r |
3c447c27 | 1622 | }\r |
e42e9404 | 1623 | //\r |
1624 | // Load SMM Core into SMRAM and execute it from SMRAM\r | |
1625 | //\r | |
c03beb76 SZ |
1626 | Status = ExecuteSmmCoreFromSmram (\r |
1627 | mCurrentSmramRange,\r | |
1628 | &gSmmCorePrivate->SmramRanges[gSmmCorePrivate->SmramRangeCount - 1],\r | |
1629 | gSmmCorePrivate\r | |
1630 | );\r | |
e42e9404 | 1631 | if (EFI_ERROR (Status)) {\r |
1632 | //\r | |
1633 | // Print error message that the SMM Core failed to be loaded and executed.\r | |
1634 | //\r | |
1635 | DEBUG ((DEBUG_ERROR, "SMM IPL could not load and execute SMM Core from SMRAM\n"));\r | |
1636 | \r | |
1637 | //\r | |
1638 | // Attempt to reset SMRAM cacheability to UC\r | |
1639 | //\r | |
0a6c0905 | 1640 | if (CpuArch != NULL) {\r |
b07ea4c1 LE |
1641 | SetAttrStatus = gDS->SetMemorySpaceAttributes(\r |
1642 | mSmramCacheBase, \r | |
1643 | mSmramCacheSize,\r | |
1644 | EFI_MEMORY_UC\r | |
1645 | );\r | |
1646 | if (EFI_ERROR (SetAttrStatus)) {\r | |
0a6c0905 | 1647 | DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r |
1648 | } \r | |
1649 | }\r | |
e42e9404 | 1650 | }\r |
1651 | } else {\r | |
1652 | //\r | |
1653 | // Print error message that there are not enough SMRAM resources to load the SMM Core.\r | |
1654 | //\r | |
1655 | DEBUG ((DEBUG_ERROR, "SMM IPL could not find a large enough SMRAM region to load SMM Core\n"));\r | |
1656 | }\r | |
1657 | \r | |
1658 | //\r | |
1659 | // If the SMM Core could not be loaded then close SMRAM window, free allocated \r | |
1660 | // resources, and return an error so SMM IPL will be unloaded.\r | |
1661 | //\r | |
1662 | if (mCurrentSmramRange == NULL || EFI_ERROR (Status)) {\r | |
1663 | //\r | |
1664 | // Close all SMRAM ranges\r | |
1665 | //\r | |
1666 | Status = mSmmAccess->Close (mSmmAccess);\r | |
1667 | ASSERT_EFI_ERROR (Status);\r | |
1668 | \r | |
1669 | //\r | |
1670 | // Print debug message that the SMRAM window is now closed.\r | |
1671 | //\r | |
1672 | DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));\r | |
1673 | \r | |
1674 | //\r | |
1675 | // Free all allocated resources\r | |
1676 | //\r | |
1677 | FreePool (gSmmCorePrivate->SmramRanges);\r | |
63aa86b0 | 1678 | \r |
e42e9404 | 1679 | return EFI_UNSUPPORTED;\r |
1680 | }\r | |
1681 | \r | |
1682 | //\r | |
1683 | // Install SMM Base2 Protocol and SMM Communication Protocol\r | |
1684 | //\r | |
1685 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1686 | &mSmmIplHandle,\r | |
1687 | &gEfiSmmBase2ProtocolGuid, &mSmmBase2,\r | |
1688 | &gEfiSmmCommunicationProtocolGuid, &mSmmCommunication,\r | |
1689 | NULL\r | |
1690 | );\r | |
1691 | ASSERT_EFI_ERROR (Status);\r | |
1692 | \r | |
1693 | //\r | |
1694 | // Create the set of protocol and event notififcations that the SMM IPL requires\r | |
1695 | //\r | |
1696 | for (Index = 0; mSmmIplEvents[Index].NotifyFunction != NULL; Index++) {\r | |
1697 | if (mSmmIplEvents[Index].Protocol) {\r | |
1698 | mSmmIplEvents[Index].Event = EfiCreateProtocolNotifyEvent (\r | |
1699 | mSmmIplEvents[Index].Guid,\r | |
5657b268 | 1700 | mSmmIplEvents[Index].NotifyTpl,\r |
e42e9404 | 1701 | mSmmIplEvents[Index].NotifyFunction,\r |
1702 | mSmmIplEvents[Index].NotifyContext,\r | |
1703 | &Registration\r | |
1704 | );\r | |
1705 | } else {\r | |
1706 | Status = gBS->CreateEventEx (\r | |
1707 | EVT_NOTIFY_SIGNAL,\r | |
5657b268 | 1708 | mSmmIplEvents[Index].NotifyTpl,\r |
e42e9404 | 1709 | mSmmIplEvents[Index].NotifyFunction,\r |
1710 | mSmmIplEvents[Index].NotifyContext,\r | |
1711 | mSmmIplEvents[Index].Guid,\r | |
1712 | &mSmmIplEvents[Index].Event\r | |
1713 | );\r | |
1714 | ASSERT_EFI_ERROR (Status);\r | |
1715 | }\r | |
1716 | }\r | |
1717 | \r | |
1718 | return EFI_SUCCESS;\r | |
1719 | }\r |