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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 | |
4b5d69d3 | 4 | Copyright (c) 2009 - 2017, 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 | 265 | EFI_SMM_COMMUNICATE_HEADER mCommunicateHeader;\r |
c2aeb66f | 266 | EFI_LOAD_FIXED_ADDRESS_CONFIGURATION_TABLE *mLMFAConfigurationTable = NULL;\r |
670a563f | 267 | \r |
e42e9404 | 268 | //\r |
269 | // Table of Protocol notification and GUIDed Event notifications that the SMM IPL requires\r | |
270 | //\r | |
271 | SMM_IPL_EVENT_NOTIFICATION mSmmIplEvents[] = {\r | |
272 | //\r | |
2048c585 | 273 | // Declare protocol notification on the SMM Configuration protocol. When this notification is established,\r |
e42e9404 | 274 | // the associated event is immediately signalled, so the notification function will be executed and the \r |
275 | // SMM Configuration Protocol will be found if it is already in the handle database.\r | |
276 | //\r | |
5657b268 | 277 | { TRUE, FALSE, &gEfiSmmConfigurationProtocolGuid, SmmIplSmmConfigurationEventNotify, &gEfiSmmConfigurationProtocolGuid, TPL_NOTIFY, NULL },\r |
e42e9404 | 278 | //\r |
01331951 | 279 | // Declare protocol notification on DxeSmmReadyToLock protocols. When this notification is established, \r |
e42e9404 | 280 | // the associated event is immediately signalled, so the notification function will be executed and the \r |
281 | // DXE SMM Ready To Lock Protocol will be found if it is already in the handle database.\r | |
282 | //\r | |
5657b268 | 283 | { TRUE, TRUE, &gEfiDxeSmmReadyToLockProtocolGuid, SmmIplReadyToLockEventNotify, &gEfiDxeSmmReadyToLockProtocolGuid, TPL_CALLBACK, NULL },\r |
e42e9404 | 284 | //\r |
2048c585 | 285 | // Declare event notification on EndOfDxe event. When this notification is established,\r |
46ece1ff JY |
286 | // the associated event is immediately signalled, so the notification function will be executed and the \r |
287 | // SMM End Of Dxe Protocol will be found if it is already in the handle database.\r | |
288 | //\r | |
dc157845 | 289 | { FALSE, TRUE, &gEfiEndOfDxeEventGroupGuid, SmmIplGuidedEventNotify, &gEfiEndOfDxeEventGroupGuid, TPL_CALLBACK, NULL },\r |
46ece1ff | 290 | //\r |
265fff39 JF |
291 | // Declare event notification on EndOfDxe event. This is used to set EndOfDxe event signaled flag.\r |
292 | //\r | |
293 | { FALSE, TRUE, &gEfiEndOfDxeEventGroupGuid, SmmIplEndOfDxeEventNotify, &gEfiEndOfDxeEventGroupGuid, TPL_CALLBACK, NULL },\r | |
294 | //\r | |
e42e9404 | 295 | // Declare event notification on the DXE Dispatch Event Group. This event is signaled by the DXE Core\r |
296 | // each time the DXE Core dispatcher has completed its work. When this event is signalled, the SMM Core\r | |
297 | // if notified, so the SMM Core can dispatch SMM drivers.\r | |
298 | //\r | |
5657b268 | 299 | { FALSE, TRUE, &gEfiEventDxeDispatchGuid, SmmIplDxeDispatchEventNotify, &gEfiEventDxeDispatchGuid, TPL_CALLBACK, NULL },\r |
e42e9404 | 300 | //\r |
301 | // Declare event notification on Ready To Boot Event Group. This is an extra event notification that is\r | |
302 | // used to make sure SMRAM is locked before any boot options are processed.\r | |
303 | //\r | |
5657b268 | 304 | { FALSE, TRUE, &gEfiEventReadyToBootGuid, SmmIplReadyToLockEventNotify, &gEfiEventReadyToBootGuid, TPL_CALLBACK, NULL },\r |
e42e9404 | 305 | //\r |
306 | // Declare event notification on Legacy Boot Event Group. This is used to inform the SMM Core that the platform \r | |
307 | // is performing a legacy boot operation, and that the UEFI environment is no longer available and the SMM Core \r | |
308 | // must guarantee that it does not access any UEFI related structures outside of SMRAM.\r | |
53ec4d7f | 309 | // It is also to inform the SMM Core to notify SMM driver that system enter legacy boot.\r |
e42e9404 | 310 | //\r |
5657b268 | 311 | { FALSE, FALSE, &gEfiEventLegacyBootGuid, SmmIplGuidedEventNotify, &gEfiEventLegacyBootGuid, TPL_CALLBACK, NULL },\r |
e42e9404 | 312 | //\r |
53ec4d7f SZ |
313 | // Declare event notification on Exit Boot Services Event Group. This is used to inform the SMM Core\r |
314 | // to notify SMM driver that system enter exit boot services.\r | |
315 | //\r | |
316 | { FALSE, FALSE, &gEfiEventExitBootServicesGuid, SmmIplGuidedEventNotify, &gEfiEventExitBootServicesGuid, TPL_CALLBACK, NULL },\r | |
317 | //\r | |
318 | // Declare event notification on Ready To Boot Event Group. This is used to inform the SMM Core\r | |
319 | // to notify SMM driver that system enter ready to boot.\r | |
320 | //\r | |
321 | { FALSE, FALSE, &gEfiEventReadyToBootGuid, SmmIplGuidedEventNotify, &gEfiEventReadyToBootGuid, TPL_CALLBACK, NULL },\r | |
322 | //\r | |
e42e9404 | 323 | // Declare event notification on SetVirtualAddressMap() Event Group. This is used to convert gSmmCorePrivate \r |
324 | // and mSmmControl2 from physical addresses to virtual addresses.\r | |
325 | //\r | |
5657b268 | 326 | { FALSE, FALSE, &gEfiEventVirtualAddressChangeGuid, SmmIplSetVirtualAddressNotify, NULL, TPL_CALLBACK, NULL },\r |
e42e9404 | 327 | //\r |
328 | // Terminate the table of event notifications\r | |
329 | //\r | |
5657b268 | 330 | { FALSE, FALSE, NULL, NULL, NULL, TPL_CALLBACK, NULL }\r |
e42e9404 | 331 | };\r |
332 | \r | |
40e8cca5 | 333 | /**\r |
334 | Find the maximum SMRAM cache range that covers the range specified by SmramRange.\r | |
335 | \r | |
336 | This function searches and joins all adjacent ranges of SmramRange into a range to be cached.\r | |
337 | \r | |
338 | @param SmramRange The SMRAM range to search from.\r | |
339 | @param SmramCacheBase The returned cache range base.\r | |
340 | @param SmramCacheSize The returned cache range size.\r | |
341 | \r | |
342 | **/\r | |
343 | VOID\r | |
344 | GetSmramCacheRange (\r | |
345 | IN EFI_SMRAM_DESCRIPTOR *SmramRange,\r | |
346 | OUT EFI_PHYSICAL_ADDRESS *SmramCacheBase,\r | |
347 | OUT UINT64 *SmramCacheSize\r | |
348 | )\r | |
349 | {\r | |
350 | UINTN Index;\r | |
351 | EFI_PHYSICAL_ADDRESS RangeCpuStart;\r | |
352 | UINT64 RangePhysicalSize;\r | |
353 | BOOLEAN FoundAjacentRange;\r | |
354 | \r | |
355 | *SmramCacheBase = SmramRange->CpuStart;\r | |
356 | *SmramCacheSize = SmramRange->PhysicalSize;\r | |
357 | \r | |
358 | do {\r | |
359 | FoundAjacentRange = FALSE;\r | |
360 | for (Index = 0; Index < gSmmCorePrivate->SmramRangeCount; Index++) {\r | |
361 | RangeCpuStart = gSmmCorePrivate->SmramRanges[Index].CpuStart;\r | |
362 | RangePhysicalSize = gSmmCorePrivate->SmramRanges[Index].PhysicalSize;\r | |
363 | if (RangeCpuStart < *SmramCacheBase && *SmramCacheBase == (RangeCpuStart + RangePhysicalSize)) {\r | |
364 | *SmramCacheBase = RangeCpuStart;\r | |
365 | *SmramCacheSize += RangePhysicalSize;\r | |
366 | FoundAjacentRange = TRUE;\r | |
367 | } else if ((*SmramCacheBase + *SmramCacheSize) == RangeCpuStart && RangePhysicalSize > 0) {\r | |
368 | *SmramCacheSize += RangePhysicalSize;\r | |
369 | FoundAjacentRange = TRUE;\r | |
370 | }\r | |
371 | }\r | |
372 | } while (FoundAjacentRange);\r | |
373 | \r | |
374 | }\r | |
375 | \r | |
e42e9404 | 376 | /**\r |
377 | Indicate whether the driver is currently executing in the SMM Initialization phase.\r | |
378 | \r | |
379 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r | |
380 | @param InSmram Pointer to a Boolean which, on return, indicates that the driver is currently executing\r | |
381 | inside of SMRAM (TRUE) or outside of SMRAM (FALSE).\r | |
382 | \r | |
383 | @retval EFI_INVALID_PARAMETER InSmram was NULL.\r | |
384 | @retval EFI_SUCCESS The call returned successfully.\r | |
385 | \r | |
386 | **/\r | |
387 | EFI_STATUS\r | |
388 | EFIAPI\r | |
389 | SmmBase2InSmram (\r | |
390 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r | |
391 | OUT BOOLEAN *InSmram\r | |
392 | )\r | |
393 | {\r | |
394 | if (InSmram == NULL) {\r | |
395 | return EFI_INVALID_PARAMETER;\r | |
396 | }\r | |
397 | \r | |
398 | *InSmram = gSmmCorePrivate->InSmm;\r | |
399 | \r | |
400 | return EFI_SUCCESS;\r | |
401 | }\r | |
402 | \r | |
403 | /**\r | |
404 | Retrieves the location of the System Management System Table (SMST).\r | |
405 | \r | |
406 | @param This The EFI_SMM_BASE2_PROTOCOL instance.\r | |
407 | @param Smst On return, points to a pointer to the System Management Service Table (SMST).\r | |
408 | \r | |
409 | @retval EFI_INVALID_PARAMETER Smst or This was invalid.\r | |
410 | @retval EFI_SUCCESS The memory was returned to the system.\r | |
411 | @retval EFI_UNSUPPORTED Not in SMM.\r | |
412 | \r | |
413 | **/\r | |
414 | EFI_STATUS\r | |
415 | EFIAPI\r | |
416 | SmmBase2GetSmstLocation (\r | |
417 | IN CONST EFI_SMM_BASE2_PROTOCOL *This,\r | |
418 | OUT EFI_SMM_SYSTEM_TABLE2 **Smst\r | |
419 | )\r | |
420 | {\r | |
421 | if ((This == NULL) ||(Smst == NULL)) {\r | |
422 | return EFI_INVALID_PARAMETER;\r | |
423 | }\r | |
424 | \r | |
425 | if (!gSmmCorePrivate->InSmm) {\r | |
426 | return EFI_UNSUPPORTED;\r | |
427 | }\r | |
428 | \r | |
429 | *Smst = gSmmCorePrivate->Smst;\r | |
430 | \r | |
431 | return EFI_SUCCESS;\r | |
432 | }\r | |
433 | \r | |
434 | /**\r | |
435 | Communicates with a registered handler.\r | |
436 | \r | |
437 | This function provides a service to send and receive messages from a registered \r | |
438 | UEFI service. This function is part of the SMM Communication Protocol that may \r | |
439 | be called in physical mode prior to SetVirtualAddressMap() and in virtual mode \r | |
440 | after SetVirtualAddressMap().\r | |
441 | \r | |
442 | @param[in] This The EFI_SMM_COMMUNICATION_PROTOCOL instance.\r | |
2292758d | 443 | @param[in, out] CommBuffer A pointer to the buffer to convey into SMRAM.\r |
444 | @param[in, out] CommSize The size of the data buffer being passed in.On exit, the size of data\r | |
e42e9404 | 445 | being returned. Zero if the handler does not wish to reply with any data.\r |
446 | \r | |
447 | @retval EFI_SUCCESS The message was successfully posted.\r | |
448 | @retval EFI_INVALID_PARAMETER The CommBuffer was NULL.\r | |
449 | **/\r | |
450 | EFI_STATUS\r | |
451 | EFIAPI\r | |
452 | SmmCommunicationCommunicate (\r | |
453 | IN CONST EFI_SMM_COMMUNICATION_PROTOCOL *This,\r | |
454 | IN OUT VOID *CommBuffer,\r | |
455 | IN OUT UINTN *CommSize\r | |
456 | )\r | |
457 | {\r | |
458 | EFI_STATUS Status;\r | |
459 | EFI_SMM_COMMUNICATE_HEADER *CommunicateHeader;\r | |
460 | BOOLEAN OldInSmm;\r | |
461 | \r | |
462 | //\r | |
463 | // Check parameters\r | |
464 | //\r | |
465 | if ((CommBuffer == NULL) || (CommSize == NULL)) {\r | |
466 | return EFI_INVALID_PARAMETER;\r | |
467 | }\r | |
468 | \r | |
ab780ebf JY |
469 | //\r |
470 | // CommSize must hold HeaderGuid and MessageLength\r | |
471 | //\r | |
472 | if (*CommSize < OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data)) {\r | |
473 | return EFI_INVALID_PARAMETER;\r | |
474 | }\r | |
475 | \r | |
e42e9404 | 476 | //\r |
477 | // If not already in SMM, then generate a Software SMI\r | |
478 | //\r | |
479 | if (!gSmmCorePrivate->InSmm && gSmmCorePrivate->SmmEntryPointRegistered) {\r | |
480 | //\r | |
481 | // Put arguments for Software SMI in gSmmCorePrivate\r | |
482 | //\r | |
483 | gSmmCorePrivate->CommunicationBuffer = CommBuffer;\r | |
ab780ebf | 484 | gSmmCorePrivate->BufferSize = *CommSize;\r |
e42e9404 | 485 | \r |
486 | //\r | |
487 | // Generate Software SMI\r | |
488 | //\r | |
489 | Status = mSmmControl2->Trigger (mSmmControl2, NULL, NULL, FALSE, 0);\r | |
490 | if (EFI_ERROR (Status)) {\r | |
491 | return EFI_UNSUPPORTED;\r | |
492 | }\r | |
493 | \r | |
494 | //\r | |
495 | // Return status from software SMI \r | |
496 | //\r | |
ab780ebf | 497 | *CommSize = gSmmCorePrivate->BufferSize;\r |
e42e9404 | 498 | return gSmmCorePrivate->ReturnStatus;\r |
499 | }\r | |
500 | \r | |
501 | //\r | |
502 | // If we are in SMM, then the execution mode must be physical, which means that\r | |
503 | // OS established virtual addresses can not be used. If SetVirtualAddressMap()\r | |
504 | // has been called, then a direct invocation of the Software SMI is not \r | |
505 | // not allowed so return EFI_INVALID_PARAMETER.\r | |
506 | //\r | |
507 | if (EfiGoneVirtual()) {\r | |
508 | return EFI_INVALID_PARAMETER;\r | |
509 | }\r | |
510 | \r | |
3c5963cf | 511 | //\r |
96756716 | 512 | // If we are not in SMM, don't allow call SmiManage() directly when SMRAM is closed or locked.\r |
3c5963cf | 513 | //\r |
96756716 | 514 | if ((!gSmmCorePrivate->InSmm) && (!mSmmAccess->OpenState || mSmmAccess->LockState)) {\r |
3c5963cf | 515 | return EFI_INVALID_PARAMETER;\r |
516 | }\r | |
517 | \r | |
e42e9404 | 518 | //\r |
519 | // Save current InSmm state and set InSmm state to TRUE\r | |
520 | //\r | |
521 | OldInSmm = gSmmCorePrivate->InSmm;\r | |
522 | gSmmCorePrivate->InSmm = TRUE;\r | |
523 | \r | |
524 | //\r | |
4b5d69d3 | 525 | // Before SetVirtualAddressMap(), we are in SMM or SMRAM is open and unlocked, call SmiManage() directly.\r |
e42e9404 | 526 | //\r |
527 | CommunicateHeader = (EFI_SMM_COMMUNICATE_HEADER *)CommBuffer;\r | |
528 | *CommSize -= OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r | |
529 | Status = gSmmCorePrivate->Smst->SmiManage (\r | |
530 | &CommunicateHeader->HeaderGuid, \r | |
531 | NULL, \r | |
532 | CommunicateHeader->Data, \r | |
533 | CommSize\r | |
534 | );\r | |
535 | \r | |
536 | //\r | |
537 | // Update CommunicationBuffer, BufferSize and ReturnStatus\r | |
538 | // Communicate service finished, reset the pointer to CommBuffer to NULL\r | |
539 | //\r | |
540 | *CommSize += OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r | |
541 | \r | |
542 | //\r | |
543 | // Restore original InSmm state\r | |
544 | //\r | |
545 | gSmmCorePrivate->InSmm = OldInSmm;\r | |
546 | \r | |
d5b339a9 | 547 | return (Status == EFI_SUCCESS) ? EFI_SUCCESS : EFI_NOT_FOUND;\r |
e42e9404 | 548 | }\r |
549 | \r | |
550 | /**\r | |
5657b268 | 551 | Event notification that is fired when GUIDed Event Group is signaled.\r |
e42e9404 | 552 | \r |
553 | @param Event The Event that is being processed, not used.\r | |
554 | @param Context Event Context, not used.\r | |
555 | \r | |
556 | **/\r | |
557 | VOID\r | |
558 | EFIAPI\r | |
559 | SmmIplGuidedEventNotify (\r | |
560 | IN EFI_EVENT Event,\r | |
561 | IN VOID *Context\r | |
562 | )\r | |
563 | {\r | |
e42e9404 | 564 | UINTN Size;\r |
565 | \r | |
566 | //\r | |
567 | // Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure \r | |
568 | //\r | |
670a563f JY |
569 | CopyGuid (&mCommunicateHeader.HeaderGuid, (EFI_GUID *)Context);\r |
570 | mCommunicateHeader.MessageLength = 1;\r | |
571 | mCommunicateHeader.Data[0] = 0;\r | |
e42e9404 | 572 | \r |
573 | //\r | |
574 | // Generate the Software SMI and return the result\r | |
575 | //\r | |
670a563f JY |
576 | Size = sizeof (mCommunicateHeader);\r |
577 | SmmCommunicationCommunicate (&mSmmCommunication, &mCommunicateHeader, &Size);\r | |
e42e9404 | 578 | }\r |
579 | \r | |
265fff39 JF |
580 | /**\r |
581 | Event notification that is fired when EndOfDxe Event Group is signaled.\r | |
582 | \r | |
583 | @param Event The Event that is being processed, not used.\r | |
584 | @param Context Event Context, not used.\r | |
585 | \r | |
586 | **/\r | |
587 | VOID\r | |
588 | EFIAPI\r | |
589 | SmmIplEndOfDxeEventNotify (\r | |
590 | IN EFI_EVENT Event,\r | |
591 | IN VOID *Context\r | |
592 | )\r | |
593 | {\r | |
594 | mEndOfDxe = TRUE;\r | |
595 | }\r | |
596 | \r | |
5657b268 | 597 | /**\r |
598 | Event notification that is fired when DxeDispatch Event Group is signaled.\r | |
599 | \r | |
600 | @param Event The Event that is being processed, not used.\r | |
601 | @param Context Event Context, not used.\r | |
602 | \r | |
603 | **/\r | |
604 | VOID\r | |
605 | EFIAPI\r | |
606 | SmmIplDxeDispatchEventNotify (\r | |
607 | IN EFI_EVENT Event,\r | |
608 | IN VOID *Context\r | |
609 | )\r | |
610 | {\r | |
5657b268 | 611 | UINTN Size;\r |
612 | EFI_STATUS Status;\r | |
613 | \r | |
614 | //\r | |
615 | // Keep calling the SMM Core Dispatcher until there is no request to restart it.\r | |
616 | //\r | |
617 | while (TRUE) {\r | |
618 | //\r | |
619 | // Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure\r | |
620 | // Clear the buffer passed into the Software SMI. This buffer will return\r | |
621 | // the status of the SMM Core Dispatcher.\r | |
622 | //\r | |
670a563f JY |
623 | CopyGuid (&mCommunicateHeader.HeaderGuid, (EFI_GUID *)Context);\r |
624 | mCommunicateHeader.MessageLength = 1;\r | |
625 | mCommunicateHeader.Data[0] = 0;\r | |
5657b268 | 626 | \r |
627 | //\r | |
628 | // Generate the Software SMI and return the result\r | |
629 | //\r | |
670a563f JY |
630 | Size = sizeof (mCommunicateHeader);\r |
631 | SmmCommunicationCommunicate (&mSmmCommunication, &mCommunicateHeader, &Size);\r | |
5657b268 | 632 | \r |
633 | //\r | |
634 | // Return if there is no request to restart the SMM Core Dispatcher\r | |
635 | //\r | |
670a563f | 636 | if (mCommunicateHeader.Data[0] != COMM_BUFFER_SMM_DISPATCH_RESTART) {\r |
5657b268 | 637 | return;\r |
638 | }\r | |
639 | \r | |
640 | //\r | |
641 | // Attempt to reset SMRAM cacheability to UC\r | |
642 | // Assume CPU AP is available at this time\r | |
643 | //\r | |
644 | Status = gDS->SetMemorySpaceAttributes(\r | |
645 | mSmramCacheBase, \r | |
646 | mSmramCacheSize,\r | |
647 | EFI_MEMORY_UC\r | |
648 | );\r | |
649 | if (EFI_ERROR (Status)) {\r | |
650 | DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r | |
651 | } \r | |
652 | \r | |
653 | //\r | |
654 | // Close all SMRAM ranges to protect SMRAM\r | |
655 | //\r | |
656 | Status = mSmmAccess->Close (mSmmAccess);\r | |
657 | ASSERT_EFI_ERROR (Status);\r | |
658 | \r | |
659 | //\r | |
660 | // Print debug message that the SMRAM window is now closed.\r | |
661 | //\r | |
662 | DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));\r | |
5657b268 | 663 | }\r |
664 | }\r | |
665 | \r | |
e42e9404 | 666 | /**\r |
667 | Event notification that is fired every time a gEfiSmmConfigurationProtocol installs.\r | |
668 | \r | |
669 | @param Event The Event that is being processed, not used.\r | |
670 | @param Context Event Context, not used.\r | |
671 | \r | |
672 | **/\r | |
673 | VOID\r | |
674 | EFIAPI\r | |
675 | SmmIplSmmConfigurationEventNotify (\r | |
676 | IN EFI_EVENT Event,\r | |
677 | IN VOID *Context\r | |
678 | )\r | |
679 | {\r | |
680 | EFI_STATUS Status;\r | |
681 | EFI_SMM_CONFIGURATION_PROTOCOL *SmmConfiguration;\r | |
682 | \r | |
683 | //\r | |
684 | // Make sure this notification is for this handler\r | |
685 | //\r | |
686 | Status = gBS->LocateProtocol (Context, NULL, (VOID **)&SmmConfiguration);\r | |
687 | if (EFI_ERROR (Status)) {\r | |
688 | return;\r | |
689 | }\r | |
690 | \r | |
691 | //\r | |
692 | // Register the SMM Entry Point provided by the SMM Core with the SMM COnfiguration protocol\r | |
693 | //\r | |
694 | Status = SmmConfiguration->RegisterSmmEntry (SmmConfiguration, gSmmCorePrivate->SmmEntryPoint);\r | |
695 | ASSERT_EFI_ERROR (Status);\r | |
696 | \r | |
697 | //\r | |
5657b268 | 698 | // Set flag to indicate that the SMM Entry Point has been registered which \r |
e42e9404 | 699 | // means that SMIs are now fully operational.\r |
700 | //\r | |
701 | gSmmCorePrivate->SmmEntryPointRegistered = TRUE;\r | |
702 | \r | |
703 | //\r | |
704 | // Print debug message showing SMM Core entry point address.\r | |
705 | //\r | |
706 | DEBUG ((DEBUG_INFO, "SMM IPL registered SMM Entry Point address %p\n", (VOID *)(UINTN)gSmmCorePrivate->SmmEntryPoint));\r | |
e42e9404 | 707 | }\r |
708 | \r | |
709 | /**\r | |
710 | Event notification that is fired every time a DxeSmmReadyToLock protocol is added\r | |
01331951 | 711 | or if gEfiEventReadyToBootGuid is signaled.\r |
e42e9404 | 712 | \r |
713 | @param Event The Event that is being processed, not used.\r | |
714 | @param Context Event Context, not used.\r | |
715 | \r | |
716 | **/\r | |
717 | VOID\r | |
718 | EFIAPI\r | |
719 | SmmIplReadyToLockEventNotify (\r | |
720 | IN EFI_EVENT Event,\r | |
721 | IN VOID *Context\r | |
722 | )\r | |
723 | {\r | |
724 | EFI_STATUS Status;\r | |
725 | VOID *Interface;\r | |
726 | UINTN Index;\r | |
727 | \r | |
728 | //\r | |
729 | // See if we are already locked\r | |
730 | //\r | |
731 | if (mSmmLocked) {\r | |
732 | return;\r | |
733 | }\r | |
734 | \r | |
735 | //\r | |
736 | // Make sure this notification is for this handler\r | |
737 | //\r | |
738 | if (CompareGuid ((EFI_GUID *)Context, &gEfiDxeSmmReadyToLockProtocolGuid)) {\r | |
739 | Status = gBS->LocateProtocol (&gEfiDxeSmmReadyToLockProtocolGuid, NULL, &Interface);\r | |
740 | if (EFI_ERROR (Status)) {\r | |
741 | return;\r | |
742 | }\r | |
743 | } else {\r | |
744 | //\r | |
745 | // If SMM is not locked yet and we got here from gEfiEventReadyToBootGuid being \r | |
01331951 | 746 | // signaled, then gEfiDxeSmmReadyToLockProtocolGuid was not installed as expected.\r |
e42e9404 | 747 | // Print a warning on debug builds.\r |
748 | //\r | |
749 | DEBUG ((DEBUG_WARN, "SMM IPL! DXE SMM Ready To Lock Protocol not installed before Ready To Boot signal\n"));\r | |
750 | }\r | |
751 | \r | |
265fff39 JF |
752 | if (!mEndOfDxe) {\r |
753 | DEBUG ((DEBUG_ERROR, "EndOfDxe Event must be signaled before DxeSmmReadyToLock Protocol installation!\n"));\r | |
754 | REPORT_STATUS_CODE (\r | |
755 | EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED,\r | |
756 | (EFI_SOFTWARE_SMM_DRIVER | EFI_SW_EC_ILLEGAL_SOFTWARE_STATE)\r | |
757 | );\r | |
758 | ASSERT (FALSE);\r | |
759 | }\r | |
760 | \r | |
e42e9404 | 761 | //\r |
762 | // Lock the SMRAM (Note: Locking SMRAM may not be supported on all platforms)\r | |
763 | //\r | |
764 | mSmmAccess->Lock (mSmmAccess);\r | |
f02dfb5a | 765 | \r |
e42e9404 | 766 | //\r |
767 | // Close protocol and event notification events that do not apply after the \r | |
768 | // DXE SMM Ready To Lock Protocol has been installed or the Ready To Boot \r | |
769 | // event has been signalled.\r | |
770 | //\r | |
771 | for (Index = 0; mSmmIplEvents[Index].NotifyFunction != NULL; Index++) {\r | |
772 | if (mSmmIplEvents[Index].CloseOnLock) {\r | |
773 | gBS->CloseEvent (mSmmIplEvents[Index].Event);\r | |
774 | }\r | |
775 | }\r | |
776 | \r | |
777 | //\r | |
778 | // Inform SMM Core that the DxeSmmReadyToLock protocol was installed\r | |
779 | //\r | |
780 | SmmIplGuidedEventNotify (Event, (VOID *)&gEfiDxeSmmReadyToLockProtocolGuid);\r | |
781 | \r | |
782 | //\r | |
783 | // Print debug message that the SMRAM window is now locked.\r | |
784 | //\r | |
785 | DEBUG ((DEBUG_INFO, "SMM IPL locked SMRAM window\n"));\r | |
786 | \r | |
787 | //\r | |
788 | // Set flag so this operation will not be performed again\r | |
789 | //\r | |
790 | mSmmLocked = TRUE;\r | |
791 | }\r | |
792 | \r | |
793 | /**\r | |
794 | Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r | |
795 | \r | |
796 | This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r | |
797 | It convers pointer to new virtual address.\r | |
798 | \r | |
799 | @param Event Event whose notification function is being invoked.\r | |
800 | @param Context Pointer to the notification function's context.\r | |
801 | \r | |
802 | **/\r | |
803 | VOID\r | |
804 | EFIAPI\r | |
805 | SmmIplSetVirtualAddressNotify (\r | |
806 | IN EFI_EVENT Event,\r | |
807 | IN VOID *Context\r | |
808 | )\r | |
809 | {\r | |
810 | EfiConvertPointer (0x0, (VOID **)&mSmmControl2);\r | |
811 | }\r | |
812 | \r | |
3c447c27 | 813 | /**\r |
2048c585 | 814 | Get the fixed loading address from image header assigned by build tool. This function only be called\r |
3c447c27 | 815 | when Loading module at Fixed address feature enabled.\r |
e42e9404 | 816 | \r |
3c447c27 | 817 | @param ImageContext Pointer to the image context structure that describes the PE/COFF\r |
818 | image that needs to be examined by this function.\r | |
819 | @retval EFI_SUCCESS An fixed loading address is assigned to this image by build tools .\r | |
2048c585 | 820 | @retval EFI_NOT_FOUND The image has no assigned fixed loading address.\r |
3c447c27 | 821 | **/\r |
822 | EFI_STATUS\r | |
823 | GetPeCoffImageFixLoadingAssignedAddress(\r | |
824 | IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r | |
825 | )\r | |
826 | {\r | |
827 | UINTN SectionHeaderOffset;\r | |
828 | EFI_STATUS Status;\r | |
829 | EFI_IMAGE_SECTION_HEADER SectionHeader;\r | |
830 | EFI_IMAGE_OPTIONAL_HEADER_UNION *ImgHdr;\r | |
2048c585 | 831 | EFI_PHYSICAL_ADDRESS FixLoadingAddress;\r |
3c447c27 | 832 | UINT16 Index;\r |
833 | UINTN Size;\r | |
834 | UINT16 NumberOfSections;\r | |
835 | EFI_PHYSICAL_ADDRESS SmramBase;\r | |
836 | UINT64 SmmCodeSize;\r | |
837 | UINT64 ValueInSectionHeader;\r | |
838 | //\r | |
839 | // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r | |
840 | //\r | |
841 | SmmCodeSize = EFI_PAGES_TO_SIZE (PcdGet32(PcdLoadFixAddressSmmCodePageNumber));\r | |
842 | \r | |
2048c585 | 843 | FixLoadingAddress = 0;\r |
3c447c27 | 844 | Status = EFI_NOT_FOUND;\r |
c2aeb66f | 845 | SmramBase = mLMFAConfigurationTable->SmramBase;\r |
3c447c27 | 846 | //\r |
847 | // Get PeHeader pointer\r | |
848 | //\r | |
849 | ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)((CHAR8* )ImageContext->Handle + ImageContext->PeCoffHeaderOffset);\r | |
16f69227 HW |
850 | SectionHeaderOffset = ImageContext->PeCoffHeaderOffset +\r |
851 | sizeof (UINT32) +\r | |
852 | sizeof (EFI_IMAGE_FILE_HEADER) +\r | |
853 | ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader;\r | |
3c447c27 | 854 | NumberOfSections = ImgHdr->Pe32.FileHeader.NumberOfSections;\r |
855 | \r | |
856 | //\r | |
857 | // Get base address from the first section header that doesn't point to code section.\r | |
858 | //\r | |
859 | for (Index = 0; Index < NumberOfSections; Index++) {\r | |
860 | //\r | |
861 | // Read section header from file\r | |
862 | //\r | |
863 | Size = sizeof (EFI_IMAGE_SECTION_HEADER);\r | |
864 | Status = ImageContext->ImageRead (\r | |
865 | ImageContext->Handle,\r | |
866 | SectionHeaderOffset,\r | |
867 | &Size,\r | |
868 | &SectionHeader\r | |
869 | );\r | |
870 | if (EFI_ERROR (Status)) {\r | |
871 | return Status;\r | |
872 | }\r | |
873 | \r | |
874 | Status = EFI_NOT_FOUND;\r | |
875 | \r | |
876 | if ((SectionHeader.Characteristics & EFI_IMAGE_SCN_CNT_CODE) == 0) {\r | |
877 | //\r | |
878 | // Build tool saves the offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields in the\r | |
879 | // first section header that doesn't point to code section in image header. And there is an assumption that when the\r | |
880 | // feature is enabled, if a module is assigned a loading address by tools, PointerToRelocations & PointerToLineNumbers\r | |
2048c585 | 881 | // fields should NOT be Zero, or else, these 2 fields should be set to Zero\r |
3c447c27 | 882 | //\r |
883 | ValueInSectionHeader = ReadUnaligned64((UINT64*)&SectionHeader.PointerToRelocations);\r | |
884 | if (ValueInSectionHeader != 0) {\r | |
885 | //\r | |
2048c585 | 886 | // Found first section header that doesn't point to code section in which build tool saves the\r |
3c447c27 | 887 | // offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields\r |
888 | //\r | |
2048c585 | 889 | FixLoadingAddress = (EFI_PHYSICAL_ADDRESS)(SmramBase + (INT64)ValueInSectionHeader);\r |
3c447c27 | 890 | \r |
2048c585 | 891 | if (SmramBase + SmmCodeSize > FixLoadingAddress && SmramBase <= FixLoadingAddress) {\r |
3c447c27 | 892 | //\r |
2048c585 | 893 | // The assigned address is valid. Return the specified loading address\r |
3c447c27 | 894 | //\r |
2048c585 | 895 | ImageContext->ImageAddress = FixLoadingAddress;\r |
3c447c27 | 896 | Status = EFI_SUCCESS;\r |
897 | }\r | |
898 | }\r | |
899 | break;\r | |
900 | }\r | |
901 | SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);\r | |
902 | }\r | |
2048c585 | 903 | DEBUG ((EFI_D_INFO|EFI_D_LOAD, "LOADING MODULE FIXED INFO: Loading module at fixed address %x, Status = %r \n", FixLoadingAddress, Status));\r |
3c447c27 | 904 | return Status;\r |
905 | }\r | |
e42e9404 | 906 | /**\r |
907 | Load the SMM Core image into SMRAM and executes the SMM Core from SMRAM.\r | |
908 | \r | |
c03beb76 SZ |
909 | @param[in, out] SmramRange Descriptor for the range of SMRAM to reload the \r |
910 | currently executing image, the rang of SMRAM to\r | |
911 | hold SMM Core will be excluded.\r | |
912 | @param[in, out] SmramRangeSmmCore Descriptor for the range of SMRAM to hold SMM Core.\r | |
913 | \r | |
914 | @param[in] Context Context to pass into SMM Core\r | |
e42e9404 | 915 | \r |
916 | @return EFI_STATUS\r | |
917 | \r | |
918 | **/\r | |
919 | EFI_STATUS\r | |
920 | ExecuteSmmCoreFromSmram (\r | |
c03beb76 SZ |
921 | IN OUT EFI_SMRAM_DESCRIPTOR *SmramRange,\r |
922 | IN OUT EFI_SMRAM_DESCRIPTOR *SmramRangeSmmCore,\r | |
923 | IN VOID *Context\r | |
e42e9404 | 924 | )\r |
925 | {\r | |
926 | EFI_STATUS Status;\r | |
927 | VOID *SourceBuffer;\r | |
928 | UINTN SourceSize;\r | |
929 | PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r | |
930 | UINTN PageCount;\r | |
e42e9404 | 931 | EFI_IMAGE_ENTRY_POINT EntryPoint;\r |
932 | \r | |
933 | //\r | |
934 | // Search all Firmware Volumes for a PE/COFF image in a file of type SMM_CORE\r | |
935 | // \r | |
d7aaf1dc LG |
936 | Status = GetSectionFromAnyFvByFileType (\r |
937 | EFI_FV_FILETYPE_SMM_CORE, \r | |
938 | 0,\r | |
939 | EFI_SECTION_PE32, \r | |
940 | 0,\r | |
941 | &SourceBuffer, \r | |
942 | &SourceSize\r | |
943 | );\r | |
944 | if (EFI_ERROR (Status)) {\r | |
945 | return Status;\r | |
e42e9404 | 946 | }\r |
947 | \r | |
948 | //\r | |
949 | // Initilize ImageContext\r | |
950 | //\r | |
951 | ImageContext.Handle = SourceBuffer;\r | |
952 | ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;\r | |
953 | \r | |
954 | //\r | |
955 | // Get information about the image being loaded\r | |
956 | //\r | |
957 | Status = PeCoffLoaderGetImageInfo (&ImageContext);\r | |
958 | if (EFI_ERROR (Status)) {\r | |
959 | return Status;\r | |
960 | }\r | |
e42e9404 | 961 | //\r |
3c447c27 | 962 | // if Loading module at Fixed Address feature is enabled, the SMM core driver will be loaded to \r |
963 | // the address assigned by build tool.\r | |
e42e9404 | 964 | //\r |
3c447c27 | 965 | if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r |
966 | //\r | |
967 | // Get the fixed loading address assigned by Build tool\r | |
968 | //\r | |
969 | Status = GetPeCoffImageFixLoadingAssignedAddress (&ImageContext);\r | |
970 | if (!EFI_ERROR (Status)) {\r | |
971 | //\r | |
972 | // 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 | |
973 | //\r | |
974 | PageCount = 0;\r | |
a7d10bb0 LG |
975 | //\r |
976 | // Reserved Smram Region for SmmCore is not used, and remove it from SmramRangeCount.\r | |
977 | //\r | |
978 | gSmmCorePrivate->SmramRangeCount --;\r | |
c03beb76 | 979 | } else {\r |
3c447c27 | 980 | DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED ERROR: Loading module at fixed address at address failed\n"));\r |
981 | //\r | |
982 | // Allocate memory for the image being loaded from the EFI_SRAM_DESCRIPTOR \r | |
983 | // specified by SmramRange\r | |
984 | //\r | |
e0e7f80c | 985 | PageCount = (UINTN)EFI_SIZE_TO_PAGES((UINTN)ImageContext.ImageSize + ImageContext.SectionAlignment);\r |
e42e9404 | 986 | \r |
3c447c27 | 987 | ASSERT ((SmramRange->PhysicalSize & EFI_PAGE_MASK) == 0);\r |
988 | ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r | |
e42e9404 | 989 | \r |
3c447c27 | 990 | SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r |
c03beb76 SZ |
991 | SmramRangeSmmCore->CpuStart = SmramRange->CpuStart + SmramRange->PhysicalSize;\r |
992 | SmramRangeSmmCore->PhysicalStart = SmramRange->PhysicalStart + SmramRange->PhysicalSize;\r | |
993 | SmramRangeSmmCore->RegionState = SmramRange->RegionState | EFI_ALLOCATED;\r | |
994 | SmramRangeSmmCore->PhysicalSize = EFI_PAGES_TO_SIZE (PageCount);\r | |
e42e9404 | 995 | \r |
3c447c27 | 996 | //\r |
c03beb76 | 997 | // Align buffer on section boundary\r |
3c447c27 | 998 | //\r |
c03beb76 | 999 | ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r |
3c447c27 | 1000 | }\r |
1001 | } else {\r | |
1002 | //\r | |
1003 | // Allocate memory for the image being loaded from the EFI_SRAM_DESCRIPTOR \r | |
1004 | // specified by SmramRange\r | |
1005 | //\r | |
e0e7f80c | 1006 | PageCount = (UINTN)EFI_SIZE_TO_PAGES((UINTN)ImageContext.ImageSize + ImageContext.SectionAlignment);\r |
3c447c27 | 1007 | \r |
1008 | ASSERT ((SmramRange->PhysicalSize & EFI_PAGE_MASK) == 0);\r | |
1009 | ASSERT (SmramRange->PhysicalSize > EFI_PAGES_TO_SIZE (PageCount));\r | |
1010 | \r | |
1011 | SmramRange->PhysicalSize -= EFI_PAGES_TO_SIZE (PageCount);\r | |
c03beb76 SZ |
1012 | SmramRangeSmmCore->CpuStart = SmramRange->CpuStart + SmramRange->PhysicalSize;\r |
1013 | SmramRangeSmmCore->PhysicalStart = SmramRange->PhysicalStart + SmramRange->PhysicalSize;\r | |
1014 | SmramRangeSmmCore->RegionState = SmramRange->RegionState | EFI_ALLOCATED;\r | |
1015 | SmramRangeSmmCore->PhysicalSize = EFI_PAGES_TO_SIZE (PageCount);\r | |
3c447c27 | 1016 | \r |
1017 | //\r | |
c03beb76 | 1018 | // Align buffer on section boundary\r |
3c447c27 | 1019 | //\r |
c03beb76 | 1020 | ImageContext.ImageAddress = SmramRangeSmmCore->CpuStart;\r |
3c447c27 | 1021 | }\r |
1022 | \r | |
e42e9404 | 1023 | ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;\r |
16f69227 | 1024 | ImageContext.ImageAddress &= ~((EFI_PHYSICAL_ADDRESS)ImageContext.SectionAlignment - 1);\r |
e42e9404 | 1025 | \r |
1026 | //\r | |
1027 | // Print debug message showing SMM Core load address.\r | |
1028 | //\r | |
1029 | DEBUG ((DEBUG_INFO, "SMM IPL loading SMM Core at SMRAM address %p\n", (VOID *)(UINTN)ImageContext.ImageAddress));\r | |
1030 | \r | |
1031 | //\r | |
1032 | // Load the image to our new buffer\r | |
1033 | //\r | |
1034 | Status = PeCoffLoaderLoadImage (&ImageContext);\r | |
1035 | if (!EFI_ERROR (Status)) {\r | |
1036 | //\r | |
1037 | // Relocate the image in our new buffer\r | |
1038 | //\r | |
1039 | Status = PeCoffLoaderRelocateImage (&ImageContext);\r | |
1040 | if (!EFI_ERROR (Status)) {\r | |
1041 | //\r | |
1042 | // Flush the instruction cache so the image data are written before we execute it\r | |
1043 | //\r | |
1044 | InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize);\r | |
1045 | \r | |
1046 | //\r | |
1047 | // Print debug message showing SMM Core entry point address.\r | |
1048 | //\r | |
1049 | DEBUG ((DEBUG_INFO, "SMM IPL calling SMM Core at SMRAM address %p\n", (VOID *)(UINTN)ImageContext.EntryPoint));\r | |
1050 | \r | |
84edd20b SZ |
1051 | gSmmCorePrivate->PiSmmCoreImageBase = ImageContext.ImageAddress;\r |
1052 | gSmmCorePrivate->PiSmmCoreImageSize = ImageContext.ImageSize;\r | |
1053 | DEBUG ((DEBUG_INFO, "PiSmmCoreImageBase - 0x%016lx\n", gSmmCorePrivate->PiSmmCoreImageBase));\r | |
1054 | DEBUG ((DEBUG_INFO, "PiSmmCoreImageSize - 0x%016lx\n", gSmmCorePrivate->PiSmmCoreImageSize));\r | |
1055 | \r | |
1056 | gSmmCorePrivate->PiSmmCoreEntryPoint = ImageContext.EntryPoint;\r | |
1057 | \r | |
e42e9404 | 1058 | //\r |
1059 | // Execute image\r | |
1060 | //\r | |
1061 | EntryPoint = (EFI_IMAGE_ENTRY_POINT)(UINTN)ImageContext.EntryPoint;\r | |
1062 | Status = EntryPoint ((EFI_HANDLE)Context, gST);\r | |
1063 | }\r | |
1064 | }\r | |
1065 | \r | |
1066 | //\r | |
c03beb76 | 1067 | // Always free memory allocted by GetFileBufferByFilePath ()\r |
e42e9404 | 1068 | //\r |
c03beb76 SZ |
1069 | FreePool (SourceBuffer);\r |
1070 | \r | |
1071 | return Status;\r | |
1072 | }\r | |
1073 | \r | |
1074 | /**\r | |
1075 | SMM split SMRAM entry.\r | |
1076 | \r | |
1077 | @param[in, out] RangeToCompare Pointer to EFI_SMRAM_DESCRIPTOR to compare.\r | |
1078 | @param[in, out] ReservedRangeToCompare Pointer to EFI_SMM_RESERVED_SMRAM_REGION to compare.\r | |
1079 | @param[out] Ranges Output pointer to hold split EFI_SMRAM_DESCRIPTOR entry.\r | |
1080 | @param[in, out] RangeCount Pointer to range count.\r | |
1081 | @param[out] ReservedRanges Output pointer to hold split EFI_SMM_RESERVED_SMRAM_REGION entry.\r | |
1082 | @param[in, out] ReservedRangeCount Pointer to reserved range count.\r | |
1083 | @param[out] FinalRanges Output pointer to hold split final EFI_SMRAM_DESCRIPTOR entry\r | |
1084 | that no need to be split anymore.\r | |
1085 | @param[in, out] FinalRangeCount Pointer to final range count.\r | |
1086 | \r | |
1087 | **/\r | |
1088 | VOID\r | |
1089 | SmmSplitSmramEntry (\r | |
1090 | IN OUT EFI_SMRAM_DESCRIPTOR *RangeToCompare,\r | |
1091 | IN OUT EFI_SMM_RESERVED_SMRAM_REGION *ReservedRangeToCompare,\r | |
1092 | OUT EFI_SMRAM_DESCRIPTOR *Ranges,\r | |
1093 | IN OUT UINTN *RangeCount,\r | |
1094 | OUT EFI_SMM_RESERVED_SMRAM_REGION *ReservedRanges,\r | |
1095 | IN OUT UINTN *ReservedRangeCount,\r | |
1096 | OUT EFI_SMRAM_DESCRIPTOR *FinalRanges,\r | |
1097 | IN OUT UINTN *FinalRangeCount\r | |
1098 | )\r | |
1099 | {\r | |
1100 | UINT64 RangeToCompareEnd;\r | |
1101 | UINT64 ReservedRangeToCompareEnd;\r | |
1102 | \r | |
1103 | RangeToCompareEnd = RangeToCompare->CpuStart + RangeToCompare->PhysicalSize;\r | |
1104 | ReservedRangeToCompareEnd = ReservedRangeToCompare->SmramReservedStart + ReservedRangeToCompare->SmramReservedSize;\r | |
1105 | \r | |
1106 | if ((RangeToCompare->CpuStart >= ReservedRangeToCompare->SmramReservedStart) &&\r | |
1107 | (RangeToCompare->CpuStart < ReservedRangeToCompareEnd)) {\r | |
1108 | if (RangeToCompareEnd < ReservedRangeToCompareEnd) {\r | |
1109 | //\r | |
1110 | // RangeToCompare ReservedRangeToCompare\r | |
1111 | // ---- ---- --------------------------------------\r | |
1112 | // | | | | -> 1. ReservedRangeToCompare\r | |
1113 | // ---- | | |--| --------------------------------------\r | |
1114 | // | | | | | |\r | |
1115 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r | |
1116 | // | | | | | | RangeToCompare->PhysicalSize = 0\r | |
1117 | // ---- | | |--| --------------------------------------\r | |
1118 | // | | | | -> 3. ReservedRanges[*ReservedRangeCount] and increment *ReservedRangeCount\r | |
1119 | // ---- ---- --------------------------------------\r | |
1120 | //\r | |
1121 | \r | |
1122 | //\r | |
1123 | // 1. Update ReservedRangeToCompare.\r | |
1124 | //\r | |
1125 | ReservedRangeToCompare->SmramReservedSize = RangeToCompare->CpuStart - ReservedRangeToCompare->SmramReservedStart;\r | |
1126 | //\r | |
1127 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r | |
1128 | // Zero RangeToCompare->PhysicalSize.\r | |
1129 | //\r | |
1130 | FinalRanges[*FinalRangeCount].CpuStart = RangeToCompare->CpuStart;\r | |
1131 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart;\r | |
1132 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r | |
1133 | FinalRanges[*FinalRangeCount].PhysicalSize = RangeToCompare->PhysicalSize;\r | |
1134 | *FinalRangeCount += 1;\r | |
1135 | RangeToCompare->PhysicalSize = 0;\r | |
1136 | //\r | |
1137 | // 3. Update ReservedRanges[*ReservedRangeCount] and increment *ReservedRangeCount.\r | |
1138 | //\r | |
1139 | ReservedRanges[*ReservedRangeCount].SmramReservedStart = FinalRanges[*FinalRangeCount - 1].CpuStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1140 | ReservedRanges[*ReservedRangeCount].SmramReservedSize = ReservedRangeToCompareEnd - RangeToCompareEnd;\r | |
1141 | *ReservedRangeCount += 1;\r | |
1142 | } else {\r | |
1143 | //\r | |
1144 | // RangeToCompare ReservedRangeToCompare\r | |
1145 | // ---- ---- --------------------------------------\r | |
1146 | // | | | | -> 1. ReservedRangeToCompare\r | |
1147 | // ---- | | |--| --------------------------------------\r | |
1148 | // | | | | | |\r | |
1149 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r | |
1150 | // | | | | | |\r | |
1151 | // | | ---- |--| --------------------------------------\r | |
1152 | // | | | | -> 3. RangeToCompare\r | |
1153 | // ---- ---- --------------------------------------\r | |
1154 | //\r | |
1155 | \r | |
1156 | //\r | |
1157 | // 1. Update ReservedRangeToCompare.\r | |
1158 | //\r | |
1159 | ReservedRangeToCompare->SmramReservedSize = RangeToCompare->CpuStart - ReservedRangeToCompare->SmramReservedStart;\r | |
1160 | //\r | |
1161 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r | |
1162 | //\r | |
1163 | FinalRanges[*FinalRangeCount].CpuStart = RangeToCompare->CpuStart;\r | |
1164 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart;\r | |
1165 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r | |
1166 | FinalRanges[*FinalRangeCount].PhysicalSize = ReservedRangeToCompareEnd - RangeToCompare->CpuStart;\r | |
1167 | *FinalRangeCount += 1;\r | |
1168 | //\r | |
1169 | // 3. Update RangeToCompare.\r | |
1170 | //\r | |
1171 | RangeToCompare->CpuStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1172 | RangeToCompare->PhysicalStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1173 | RangeToCompare->PhysicalSize -= FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1174 | }\r | |
1175 | } else if ((ReservedRangeToCompare->SmramReservedStart >= RangeToCompare->CpuStart) &&\r | |
1176 | (ReservedRangeToCompare->SmramReservedStart < RangeToCompareEnd)) {\r | |
1177 | if (ReservedRangeToCompareEnd < RangeToCompareEnd) {\r | |
1178 | //\r | |
1179 | // RangeToCompare ReservedRangeToCompare\r | |
1180 | // ---- ---- --------------------------------------\r | |
1181 | // | | | | -> 1. RangeToCompare\r | |
1182 | // | | ---- |--| --------------------------------------\r | |
1183 | // | | | | | |\r | |
1184 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r | |
1185 | // | | | | | | ReservedRangeToCompare->SmramReservedSize = 0\r | |
1186 | // | | ---- |--| --------------------------------------\r | |
1187 | // | | | | -> 3. Ranges[*RangeCount] and increment *RangeCount\r | |
1188 | // ---- ---- --------------------------------------\r | |
1189 | //\r | |
1190 | \r | |
1191 | //\r | |
1192 | // 1. Update RangeToCompare.\r | |
1193 | //\r | |
1194 | RangeToCompare->PhysicalSize = ReservedRangeToCompare->SmramReservedStart - RangeToCompare->CpuStart;\r | |
1195 | //\r | |
1196 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r | |
1197 | // ReservedRangeToCompare->SmramReservedSize = 0\r | |
1198 | //\r | |
1199 | FinalRanges[*FinalRangeCount].CpuStart = ReservedRangeToCompare->SmramReservedStart;\r | |
1200 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart + RangeToCompare->PhysicalSize;\r | |
1201 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r | |
1202 | FinalRanges[*FinalRangeCount].PhysicalSize = ReservedRangeToCompare->SmramReservedSize;\r | |
1203 | *FinalRangeCount += 1;\r | |
1204 | ReservedRangeToCompare->SmramReservedSize = 0;\r | |
1205 | //\r | |
1206 | // 3. Update Ranges[*RangeCount] and increment *RangeCount.\r | |
1207 | //\r | |
1208 | Ranges[*RangeCount].CpuStart = FinalRanges[*FinalRangeCount - 1].CpuStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1209 | Ranges[*RangeCount].PhysicalStart = FinalRanges[*FinalRangeCount - 1].PhysicalStart + FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1210 | Ranges[*RangeCount].RegionState = RangeToCompare->RegionState;\r | |
1211 | Ranges[*RangeCount].PhysicalSize = RangeToCompareEnd - ReservedRangeToCompareEnd;\r | |
1212 | *RangeCount += 1;\r | |
1213 | } else {\r | |
1214 | //\r | |
1215 | // RangeToCompare ReservedRangeToCompare\r | |
1216 | // ---- ---- --------------------------------------\r | |
1217 | // | | | | -> 1. RangeToCompare\r | |
1218 | // | | ---- |--| --------------------------------------\r | |
1219 | // | | | | | |\r | |
1220 | // | | | | | | -> 2. FinalRanges[*FinalRangeCount] and increment *FinalRangeCount\r | |
1221 | // | | | | | |\r | |
1222 | // ---- | | |--| --------------------------------------\r | |
1223 | // | | | | -> 3. ReservedRangeToCompare\r | |
1224 | // ---- ---- --------------------------------------\r | |
1225 | //\r | |
1226 | \r | |
1227 | //\r | |
1228 | // 1. Update RangeToCompare.\r | |
1229 | //\r | |
1230 | RangeToCompare->PhysicalSize = ReservedRangeToCompare->SmramReservedStart - RangeToCompare->CpuStart;\r | |
1231 | //\r | |
1232 | // 2. Update FinalRanges[FinalRangeCount] and increment *FinalRangeCount.\r | |
1233 | // ReservedRangeToCompare->SmramReservedSize = 0\r | |
1234 | //\r | |
1235 | FinalRanges[*FinalRangeCount].CpuStart = ReservedRangeToCompare->SmramReservedStart;\r | |
1236 | FinalRanges[*FinalRangeCount].PhysicalStart = RangeToCompare->PhysicalStart + RangeToCompare->PhysicalSize;\r | |
1237 | FinalRanges[*FinalRangeCount].RegionState = RangeToCompare->RegionState | EFI_ALLOCATED;\r | |
1238 | FinalRanges[*FinalRangeCount].PhysicalSize = RangeToCompareEnd - ReservedRangeToCompare->SmramReservedStart;\r | |
1239 | *FinalRangeCount += 1;\r | |
1240 | //\r | |
1241 | // 3. Update ReservedRangeToCompare.\r | |
1242 | //\r | |
1243 | ReservedRangeToCompare->SmramReservedStart += FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1244 | ReservedRangeToCompare->SmramReservedSize -= FinalRanges[*FinalRangeCount - 1].PhysicalSize;\r | |
1245 | }\r | |
1246 | }\r | |
1247 | }\r | |
1248 | \r | |
1249 | /**\r | |
1250 | Returns if SMRAM range and SMRAM reserved range are overlapped.\r | |
1251 | \r | |
1252 | @param[in] RangeToCompare Pointer to EFI_SMRAM_DESCRIPTOR to compare.\r | |
1253 | @param[in] ReservedRangeToCompare Pointer to EFI_SMM_RESERVED_SMRAM_REGION to compare.\r | |
1254 | \r | |
1255 | @retval TRUE There is overlap.\r | |
1256 | @retval FALSE There is no overlap.\r | |
1257 | \r | |
1258 | **/\r | |
1259 | BOOLEAN\r | |
1260 | SmmIsSmramOverlap (\r | |
1261 | IN EFI_SMRAM_DESCRIPTOR *RangeToCompare,\r | |
1262 | IN EFI_SMM_RESERVED_SMRAM_REGION *ReservedRangeToCompare\r | |
1263 | )\r | |
1264 | {\r | |
1265 | UINT64 RangeToCompareEnd;\r | |
1266 | UINT64 ReservedRangeToCompareEnd;\r | |
1267 | \r | |
1268 | RangeToCompareEnd = RangeToCompare->CpuStart + RangeToCompare->PhysicalSize;\r | |
1269 | ReservedRangeToCompareEnd = ReservedRangeToCompare->SmramReservedStart + ReservedRangeToCompare->SmramReservedSize;\r | |
1270 | \r | |
1271 | if ((RangeToCompare->CpuStart >= ReservedRangeToCompare->SmramReservedStart) &&\r | |
1272 | (RangeToCompare->CpuStart < ReservedRangeToCompareEnd)) {\r | |
1273 | return TRUE;\r | |
1274 | } else if ((ReservedRangeToCompare->SmramReservedStart >= RangeToCompare->CpuStart) &&\r | |
1275 | (ReservedRangeToCompare->SmramReservedStart < RangeToCompareEnd)) {\r | |
1276 | return TRUE;\r | |
e42e9404 | 1277 | }\r |
c03beb76 SZ |
1278 | return FALSE;\r |
1279 | }\r | |
1280 | \r | |
1281 | /**\r | |
1282 | Get full SMRAM ranges.\r | |
e42e9404 | 1283 | \r |
c03beb76 SZ |
1284 | It will get SMRAM ranges from SmmAccess protocol and SMRAM reserved ranges from\r |
1285 | SmmConfiguration protocol, split the entries if there is overlap between them.\r | |
1286 | It will also reserve one entry for SMM core.\r | |
1287 | \r | |
1288 | @param[out] FullSmramRangeCount Output pointer to full SMRAM range count.\r | |
1289 | \r | |
1290 | @return Pointer to full SMRAM ranges.\r | |
1291 | \r | |
1292 | **/\r | |
1293 | EFI_SMRAM_DESCRIPTOR *\r | |
1294 | GetFullSmramRanges (\r | |
1295 | OUT UINTN *FullSmramRangeCount\r | |
1296 | )\r | |
1297 | {\r | |
1298 | EFI_STATUS Status;\r | |
1299 | EFI_SMM_CONFIGURATION_PROTOCOL *SmmConfiguration;\r | |
1300 | UINTN Size;\r | |
1301 | UINTN Index;\r | |
1302 | UINTN Index2;\r | |
1303 | EFI_SMRAM_DESCRIPTOR *FullSmramRanges;\r | |
1304 | UINTN TempSmramRangeCount;\r | |
a7d10bb0 | 1305 | UINTN AdditionSmramRangeCount;\r |
c03beb76 SZ |
1306 | EFI_SMRAM_DESCRIPTOR *TempSmramRanges;\r |
1307 | UINTN SmramRangeCount;\r | |
1308 | EFI_SMRAM_DESCRIPTOR *SmramRanges;\r | |
1309 | UINTN SmramReservedCount;\r | |
1310 | EFI_SMM_RESERVED_SMRAM_REGION *SmramReservedRanges;\r | |
1311 | UINTN MaxCount;\r | |
1312 | BOOLEAN Rescan;\r | |
1313 | \r | |
1314 | //\r | |
1315 | // Get SMM Configuration Protocol if it is present.\r | |
e42e9404 | 1316 | //\r |
c03beb76 SZ |
1317 | SmmConfiguration = NULL;\r |
1318 | Status = gBS->LocateProtocol (&gEfiSmmConfigurationProtocolGuid, NULL, (VOID **) &SmmConfiguration);\r | |
1319 | \r | |
e42e9404 | 1320 | //\r |
c03beb76 SZ |
1321 | // Get SMRAM information.\r |
1322 | //\r | |
1323 | Size = 0;\r | |
1324 | Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, NULL);\r | |
1325 | ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r | |
e42e9404 | 1326 | \r |
c03beb76 SZ |
1327 | SmramRangeCount = Size / sizeof (EFI_SMRAM_DESCRIPTOR);\r |
1328 | \r | |
1329 | //\r | |
1330 | // Get SMRAM reserved region count.\r | |
1331 | //\r | |
1332 | SmramReservedCount = 0;\r | |
1333 | if (SmmConfiguration != NULL) {\r | |
1334 | while (SmmConfiguration->SmramReservedRegions[SmramReservedCount].SmramReservedSize != 0) {\r | |
1335 | SmramReservedCount++;\r | |
1336 | }\r | |
1337 | }\r | |
1338 | \r | |
a7d10bb0 LG |
1339 | //\r |
1340 | // Reserve one entry for SMM Core in the full SMRAM ranges.\r | |
1341 | //\r | |
1342 | AdditionSmramRangeCount = 1;\r | |
1343 | if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r | |
1344 | //\r | |
1345 | // Reserve two entries for all SMM drivers and SMM Core in the full SMRAM ranges.\r | |
1346 | //\r | |
1347 | AdditionSmramRangeCount = 2;\r | |
1348 | }\r | |
1349 | \r | |
c03beb76 SZ |
1350 | if (SmramReservedCount == 0) {\r |
1351 | //\r | |
1352 | // No reserved SMRAM entry from SMM Configuration Protocol.\r | |
c03beb76 | 1353 | //\r |
a7d10bb0 | 1354 | *FullSmramRangeCount = SmramRangeCount + AdditionSmramRangeCount;\r |
c03beb76 | 1355 | Size = (*FullSmramRangeCount) * sizeof (EFI_SMRAM_DESCRIPTOR);\r |
08308fc9 | 1356 | FullSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocateZeroPool (Size);\r |
c03beb76 SZ |
1357 | ASSERT (FullSmramRanges != NULL);\r |
1358 | \r | |
1359 | Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, FullSmramRanges);\r | |
1360 | ASSERT_EFI_ERROR (Status);\r | |
1361 | \r | |
1362 | return FullSmramRanges;\r | |
1363 | }\r | |
1364 | \r | |
1365 | //\r | |
1366 | // Why MaxCount = X + 2 * Y?\r | |
1367 | // Take Y = 1 as example below, Y > 1 case is just the iteration of Y = 1.\r | |
1368 | //\r | |
1369 | // X = 1 Y = 1 MaxCount = 3 = 1 + 2 * 1\r | |
1370 | // ---- ----\r | |
1371 | // | | ---- |--|\r | |
1372 | // | | | | -> | |\r | |
1373 | // | | ---- |--|\r | |
1374 | // ---- ----\r | |
1375 | //\r | |
1376 | // X = 2 Y = 1 MaxCount = 4 = 2 + 2 * 1\r | |
1377 | // ---- ----\r | |
1378 | // | | | |\r | |
1379 | // | | ---- |--|\r | |
1380 | // | | | | | |\r | |
1381 | // |--| | | -> |--|\r | |
1382 | // | | | | | |\r | |
1383 | // | | ---- |--|\r | |
1384 | // | | | |\r | |
1385 | // ---- ----\r | |
1386 | //\r | |
1387 | // X = 3 Y = 1 MaxCount = 5 = 3 + 2 * 1\r | |
1388 | // ---- ----\r | |
1389 | // | | | |\r | |
1390 | // | | ---- |--|\r | |
1391 | // |--| | | |--|\r | |
1392 | // | | | | -> | |\r | |
1393 | // |--| | | |--|\r | |
1394 | // | | ---- |--|\r | |
1395 | // | | | |\r | |
1396 | // ---- ----\r | |
1397 | //\r | |
1398 | // ......\r | |
1399 | //\r | |
1400 | MaxCount = SmramRangeCount + 2 * SmramReservedCount;\r | |
1401 | \r | |
1402 | Size = MaxCount * sizeof (EFI_SMM_RESERVED_SMRAM_REGION);\r | |
1403 | SmramReservedRanges = (EFI_SMM_RESERVED_SMRAM_REGION *) AllocatePool (Size);\r | |
1404 | ASSERT (SmramReservedRanges != NULL);\r | |
1405 | for (Index = 0; Index < SmramReservedCount; Index++) {\r | |
1406 | CopyMem (&SmramReservedRanges[Index], &SmmConfiguration->SmramReservedRegions[Index], sizeof (EFI_SMM_RESERVED_SMRAM_REGION));\r | |
1407 | }\r | |
1408 | \r | |
1409 | Size = MaxCount * sizeof (EFI_SMRAM_DESCRIPTOR);\r | |
1410 | TempSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocatePool (Size);\r | |
1411 | ASSERT (TempSmramRanges != NULL);\r | |
1412 | TempSmramRangeCount = 0;\r | |
1413 | \r | |
1414 | SmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocatePool (Size);\r | |
1415 | ASSERT (SmramRanges != NULL);\r | |
1416 | Status = mSmmAccess->GetCapabilities (mSmmAccess, &Size, SmramRanges);\r | |
1417 | ASSERT_EFI_ERROR (Status);\r | |
1418 | \r | |
1419 | do {\r | |
1420 | Rescan = FALSE;\r | |
1421 | for (Index = 0; (Index < SmramRangeCount) && !Rescan; Index++) {\r | |
1422 | //\r | |
1423 | // Skip zero size entry.\r | |
1424 | //\r | |
1425 | if (SmramRanges[Index].PhysicalSize != 0) {\r | |
1426 | for (Index2 = 0; (Index2 < SmramReservedCount) && !Rescan; Index2++) {\r | |
1427 | //\r | |
1428 | // Skip zero size entry.\r | |
1429 | //\r | |
1430 | if (SmramReservedRanges[Index2].SmramReservedSize != 0) {\r | |
1431 | if (SmmIsSmramOverlap (\r | |
1432 | &SmramRanges[Index],\r | |
1433 | &SmramReservedRanges[Index2]\r | |
1434 | )) {\r | |
1435 | //\r | |
1436 | // There is overlap, need to split entry and then rescan.\r | |
1437 | //\r | |
1438 | SmmSplitSmramEntry (\r | |
1439 | &SmramRanges[Index],\r | |
1440 | &SmramReservedRanges[Index2],\r | |
1441 | SmramRanges,\r | |
1442 | &SmramRangeCount,\r | |
1443 | SmramReservedRanges,\r | |
1444 | &SmramReservedCount,\r | |
1445 | TempSmramRanges,\r | |
1446 | &TempSmramRangeCount\r | |
1447 | );\r | |
1448 | Rescan = TRUE;\r | |
1449 | }\r | |
1450 | }\r | |
1451 | }\r | |
1452 | if (!Rescan) {\r | |
1453 | //\r | |
1454 | // No any overlap, copy the entry to the temp SMRAM ranges.\r | |
1455 | // Zero SmramRanges[Index].PhysicalSize = 0;\r | |
1456 | //\r | |
1457 | CopyMem (&TempSmramRanges[TempSmramRangeCount++], &SmramRanges[Index], sizeof (EFI_SMRAM_DESCRIPTOR));\r | |
1458 | SmramRanges[Index].PhysicalSize = 0;\r | |
1459 | }\r | |
1460 | }\r | |
1461 | }\r | |
1462 | } while (Rescan);\r | |
1463 | ASSERT (TempSmramRangeCount <= MaxCount);\r | |
1464 | \r | |
1465 | //\r | |
a7d10bb0 | 1466 | // Sort the entries\r |
c03beb76 | 1467 | //\r |
a7d10bb0 | 1468 | FullSmramRanges = AllocateZeroPool ((TempSmramRangeCount + AdditionSmramRangeCount) * sizeof (EFI_SMRAM_DESCRIPTOR));\r |
c03beb76 SZ |
1469 | ASSERT (FullSmramRanges != NULL);\r |
1470 | *FullSmramRangeCount = 0;\r | |
1471 | do {\r | |
1472 | for (Index = 0; Index < TempSmramRangeCount; Index++) {\r | |
1473 | if (TempSmramRanges[Index].PhysicalSize != 0) {\r | |
1474 | break;\r | |
1475 | }\r | |
1476 | }\r | |
1477 | ASSERT (Index < TempSmramRangeCount);\r | |
1478 | for (Index2 = 0; Index2 < TempSmramRangeCount; Index2++) {\r | |
1479 | if ((Index2 != Index) && (TempSmramRanges[Index2].PhysicalSize != 0) && (TempSmramRanges[Index2].CpuStart < TempSmramRanges[Index].CpuStart)) {\r | |
1480 | Index = Index2;\r | |
1481 | }\r | |
1482 | }\r | |
1483 | CopyMem (&FullSmramRanges[*FullSmramRangeCount], &TempSmramRanges[Index], sizeof (EFI_SMRAM_DESCRIPTOR));\r | |
1484 | *FullSmramRangeCount += 1;\r | |
1485 | TempSmramRanges[Index].PhysicalSize = 0;\r | |
1486 | } while (*FullSmramRangeCount < TempSmramRangeCount);\r | |
1487 | ASSERT (*FullSmramRangeCount == TempSmramRangeCount);\r | |
a7d10bb0 | 1488 | *FullSmramRangeCount += AdditionSmramRangeCount;\r |
c03beb76 SZ |
1489 | \r |
1490 | FreePool (SmramRanges);\r | |
1491 | FreePool (SmramReservedRanges);\r | |
1492 | FreePool (TempSmramRanges);\r | |
1493 | \r | |
1494 | return FullSmramRanges;\r | |
e42e9404 | 1495 | }\r |
1496 | \r | |
1497 | /**\r | |
1498 | The Entry Point for SMM IPL\r | |
1499 | \r | |
1500 | Load SMM Core into SMRAM, register SMM Core entry point for SMIs, install \r | |
1501 | SMM Base 2 Protocol and SMM Communication Protocol, and register for the \r | |
1502 | critical events required to coordinate between DXE and SMM environments.\r | |
1503 | \r | |
1504 | @param ImageHandle The firmware allocated handle for the EFI image.\r | |
1505 | @param SystemTable A pointer to the EFI System Table.\r | |
1506 | \r | |
1507 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
1508 | @retval Other Some error occurred when executing this entry point.\r | |
1509 | \r | |
1510 | **/\r | |
1511 | EFI_STATUS\r | |
1512 | EFIAPI\r | |
1513 | SmmIplEntry (\r | |
1514 | IN EFI_HANDLE ImageHandle,\r | |
1515 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
1516 | )\r | |
1517 | {\r | |
1518 | EFI_STATUS Status;\r | |
e42e9404 | 1519 | UINTN Index;\r |
e42e9404 | 1520 | UINT64 MaxSize;\r |
1521 | VOID *Registration;\r | |
07d9dc83 | 1522 | UINT64 SmmCodeSize;\r |
07d9dc83 | 1523 | EFI_CPU_ARCH_PROTOCOL *CpuArch;\r |
b07ea4c1 | 1524 | EFI_STATUS SetAttrStatus;\r |
a7d10bb0 | 1525 | EFI_SMRAM_DESCRIPTOR *SmramRangeSmmDriver;\r |
e42e9404 | 1526 | \r |
1527 | //\r | |
1528 | // Fill in the image handle of the SMM IPL so the SMM Core can use this as the \r | |
1529 | // ParentImageHandle field of the Load Image Protocol for all SMM Drivers loaded \r | |
1530 | // by the SMM Core\r | |
1531 | //\r | |
1532 | mSmmCorePrivateData.SmmIplImageHandle = ImageHandle;\r | |
1533 | \r | |
1534 | //\r | |
1535 | // Get SMM Access Protocol\r | |
1536 | //\r | |
1537 | Status = gBS->LocateProtocol (&gEfiSmmAccess2ProtocolGuid, NULL, (VOID **)&mSmmAccess);\r | |
1538 | ASSERT_EFI_ERROR (Status);\r | |
1539 | \r | |
1540 | //\r | |
1541 | // Get SMM Control2 Protocol\r | |
1542 | //\r | |
1543 | Status = gBS->LocateProtocol (&gEfiSmmControl2ProtocolGuid, NULL, (VOID **)&mSmmControl2);\r | |
1544 | ASSERT_EFI_ERROR (Status);\r | |
1545 | \r | |
c03beb76 | 1546 | gSmmCorePrivate->SmramRanges = GetFullSmramRanges (&gSmmCorePrivate->SmramRangeCount);\r |
84edd20b | 1547 | \r |
e42e9404 | 1548 | //\r |
1549 | // Open all SMRAM ranges\r | |
1550 | //\r | |
1551 | Status = mSmmAccess->Open (mSmmAccess);\r | |
1552 | ASSERT_EFI_ERROR (Status);\r | |
1553 | \r | |
1554 | //\r | |
1555 | // Print debug message that the SMRAM window is now open.\r | |
1556 | //\r | |
1557 | DEBUG ((DEBUG_INFO, "SMM IPL opened SMRAM window\n"));\r | |
e42e9404 | 1558 | \r |
1559 | //\r | |
06b07ce3 | 1560 | // Find the largest SMRAM range between 1MB and 4GB that is at least 256KB - 4K in size\r |
e42e9404 | 1561 | //\r |
1562 | mCurrentSmramRange = NULL;\r | |
06b07ce3 | 1563 | for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < gSmmCorePrivate->SmramRangeCount; Index++) {\r |
2c0f06f0 | 1564 | //\r |
1565 | // Skip any SMRAM region that is already allocated, needs testing, or needs ECC initialization\r | |
1566 | //\r | |
1567 | if ((gSmmCorePrivate->SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {\r | |
1568 | continue;\r | |
1569 | }\r | |
1570 | \r | |
e42e9404 | 1571 | if (gSmmCorePrivate->SmramRanges[Index].CpuStart >= BASE_1MB) {\r |
10e4e4f6 | 1572 | if ((gSmmCorePrivate->SmramRanges[Index].CpuStart + gSmmCorePrivate->SmramRanges[Index].PhysicalSize - 1) <= MAX_ADDRESS) {\r |
e42e9404 | 1573 | if (gSmmCorePrivate->SmramRanges[Index].PhysicalSize >= MaxSize) {\r |
1574 | MaxSize = gSmmCorePrivate->SmramRanges[Index].PhysicalSize;\r | |
1575 | mCurrentSmramRange = &gSmmCorePrivate->SmramRanges[Index];\r | |
1576 | }\r | |
1577 | }\r | |
1578 | }\r | |
1579 | }\r | |
1580 | \r | |
1581 | if (mCurrentSmramRange != NULL) {\r | |
1582 | //\r | |
1583 | // Print debug message showing SMRAM window that will be used by SMM IPL and SMM Core\r | |
1584 | //\r | |
1585 | DEBUG ((DEBUG_INFO, "SMM IPL found SMRAM window %p - %p\n", \r | |
1586 | (VOID *)(UINTN)mCurrentSmramRange->CpuStart, \r | |
1587 | (VOID *)(UINTN)(mCurrentSmramRange->CpuStart + mCurrentSmramRange->PhysicalSize - 1)\r | |
1588 | ));\r | |
1589 | \r | |
40e8cca5 | 1590 | GetSmramCacheRange (mCurrentSmramRange, &mSmramCacheBase, &mSmramCacheSize);\r |
e42e9404 | 1591 | //\r |
07d9dc83 | 1592 | // If CPU AP is present, attempt to set SMRAM cacheability to WB\r |
1593 | // Note that it is expected that cacheability of SMRAM has been set to WB if CPU AP\r | |
1594 | // is not available here.\r | |
e42e9404 | 1595 | //\r |
0a6c0905 | 1596 | CpuArch = NULL;\r |
07d9dc83 | 1597 | Status = gBS->LocateProtocol (&gEfiCpuArchProtocolGuid, NULL, (VOID **)&CpuArch);\r |
1598 | if (!EFI_ERROR (Status)) {\r | |
1599 | Status = gDS->SetMemorySpaceAttributes(\r | |
1600 | mSmramCacheBase, \r | |
1601 | mSmramCacheSize,\r | |
1602 | EFI_MEMORY_WB\r | |
1603 | );\r | |
1604 | if (EFI_ERROR (Status)) {\r | |
1605 | DEBUG ((DEBUG_WARN, "SMM IPL failed to set SMRAM window to EFI_MEMORY_WB\n"));\r | |
1606 | } \r | |
1607 | }\r | |
3c447c27 | 1608 | //\r |
1609 | // if Loading module at Fixed Address feature is enabled, save the SMRAM base to Load\r | |
1610 | // Modules At Fixed Address Configuration Table.\r | |
1611 | //\r | |
1612 | if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {\r | |
1613 | //\r | |
1614 | // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber\r | |
1615 | //\r | |
1616 | SmmCodeSize = LShiftU64 (PcdGet32(PcdLoadFixAddressSmmCodePageNumber), EFI_PAGE_SHIFT);\r | |
1617 | //\r | |
1618 | // The SMRAM available memory is assumed to be larger than SmmCodeSize\r | |
1619 | //\r | |
1620 | ASSERT (mCurrentSmramRange->PhysicalSize > SmmCodeSize);\r | |
1621 | //\r | |
1622 | // Retrieve Load modules At fixed address configuration table and save the SMRAM base.\r | |
1623 | //\r | |
1624 | Status = EfiGetSystemConfigurationTable (\r | |
1625 | &gLoadFixedAddressConfigurationTableGuid,\r | |
c2aeb66f | 1626 | (VOID **) &mLMFAConfigurationTable\r |
3c447c27 | 1627 | );\r |
c2aeb66f LG |
1628 | if (!EFI_ERROR (Status) && mLMFAConfigurationTable != NULL) {\r |
1629 | mLMFAConfigurationTable->SmramBase = mCurrentSmramRange->CpuStart;\r | |
2d5ac154 | 1630 | //\r |
1631 | // Print the SMRAM base\r | |
1632 | //\r | |
c2aeb66f | 1633 | DEBUG ((EFI_D_INFO, "LOADING MODULE FIXED INFO: TSEG BASE is %x. \n", mLMFAConfigurationTable->SmramBase));\r |
3c447c27 | 1634 | }\r |
a7d10bb0 LG |
1635 | \r |
1636 | //\r | |
1637 | // Fill the Smram range for all SMM code\r | |
1638 | //\r | |
1639 | SmramRangeSmmDriver = &gSmmCorePrivate->SmramRanges[gSmmCorePrivate->SmramRangeCount - 2];\r | |
1640 | SmramRangeSmmDriver->CpuStart = mCurrentSmramRange->CpuStart;\r | |
1641 | SmramRangeSmmDriver->PhysicalStart = mCurrentSmramRange->PhysicalStart;\r | |
1642 | SmramRangeSmmDriver->RegionState = mCurrentSmramRange->RegionState | EFI_ALLOCATED;\r | |
1643 | SmramRangeSmmDriver->PhysicalSize = SmmCodeSize;\r | |
1644 | \r | |
1645 | mCurrentSmramRange->PhysicalSize -= SmmCodeSize;\r | |
1646 | mCurrentSmramRange->CpuStart = mCurrentSmramRange->CpuStart + SmmCodeSize;\r | |
1647 | mCurrentSmramRange->PhysicalStart = mCurrentSmramRange->PhysicalStart + SmmCodeSize;\r | |
3c447c27 | 1648 | }\r |
e42e9404 | 1649 | //\r |
1650 | // Load SMM Core into SMRAM and execute it from SMRAM\r | |
1651 | //\r | |
c03beb76 SZ |
1652 | Status = ExecuteSmmCoreFromSmram (\r |
1653 | mCurrentSmramRange,\r | |
1654 | &gSmmCorePrivate->SmramRanges[gSmmCorePrivate->SmramRangeCount - 1],\r | |
1655 | gSmmCorePrivate\r | |
1656 | );\r | |
e42e9404 | 1657 | if (EFI_ERROR (Status)) {\r |
1658 | //\r | |
1659 | // Print error message that the SMM Core failed to be loaded and executed.\r | |
1660 | //\r | |
1661 | DEBUG ((DEBUG_ERROR, "SMM IPL could not load and execute SMM Core from SMRAM\n"));\r | |
1662 | \r | |
1663 | //\r | |
1664 | // Attempt to reset SMRAM cacheability to UC\r | |
1665 | //\r | |
0a6c0905 | 1666 | if (CpuArch != NULL) {\r |
b07ea4c1 LE |
1667 | SetAttrStatus = gDS->SetMemorySpaceAttributes(\r |
1668 | mSmramCacheBase, \r | |
1669 | mSmramCacheSize,\r | |
1670 | EFI_MEMORY_UC\r | |
1671 | );\r | |
1672 | if (EFI_ERROR (SetAttrStatus)) {\r | |
0a6c0905 | 1673 | DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));\r |
1674 | } \r | |
1675 | }\r | |
e42e9404 | 1676 | }\r |
1677 | } else {\r | |
1678 | //\r | |
1679 | // Print error message that there are not enough SMRAM resources to load the SMM Core.\r | |
1680 | //\r | |
1681 | DEBUG ((DEBUG_ERROR, "SMM IPL could not find a large enough SMRAM region to load SMM Core\n"));\r | |
1682 | }\r | |
1683 | \r | |
1684 | //\r | |
1685 | // If the SMM Core could not be loaded then close SMRAM window, free allocated \r | |
1686 | // resources, and return an error so SMM IPL will be unloaded.\r | |
1687 | //\r | |
1688 | if (mCurrentSmramRange == NULL || EFI_ERROR (Status)) {\r | |
1689 | //\r | |
1690 | // Close all SMRAM ranges\r | |
1691 | //\r | |
1692 | Status = mSmmAccess->Close (mSmmAccess);\r | |
1693 | ASSERT_EFI_ERROR (Status);\r | |
1694 | \r | |
1695 | //\r | |
1696 | // Print debug message that the SMRAM window is now closed.\r | |
1697 | //\r | |
1698 | DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));\r | |
1699 | \r | |
1700 | //\r | |
1701 | // Free all allocated resources\r | |
1702 | //\r | |
1703 | FreePool (gSmmCorePrivate->SmramRanges);\r | |
63aa86b0 | 1704 | \r |
e42e9404 | 1705 | return EFI_UNSUPPORTED;\r |
1706 | }\r | |
1707 | \r | |
1708 | //\r | |
1709 | // Install SMM Base2 Protocol and SMM Communication Protocol\r | |
1710 | //\r | |
1711 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
1712 | &mSmmIplHandle,\r | |
1713 | &gEfiSmmBase2ProtocolGuid, &mSmmBase2,\r | |
1714 | &gEfiSmmCommunicationProtocolGuid, &mSmmCommunication,\r | |
1715 | NULL\r | |
1716 | );\r | |
1717 | ASSERT_EFI_ERROR (Status);\r | |
1718 | \r | |
1719 | //\r | |
1720 | // Create the set of protocol and event notififcations that the SMM IPL requires\r | |
1721 | //\r | |
1722 | for (Index = 0; mSmmIplEvents[Index].NotifyFunction != NULL; Index++) {\r | |
1723 | if (mSmmIplEvents[Index].Protocol) {\r | |
1724 | mSmmIplEvents[Index].Event = EfiCreateProtocolNotifyEvent (\r | |
1725 | mSmmIplEvents[Index].Guid,\r | |
5657b268 | 1726 | mSmmIplEvents[Index].NotifyTpl,\r |
e42e9404 | 1727 | mSmmIplEvents[Index].NotifyFunction,\r |
1728 | mSmmIplEvents[Index].NotifyContext,\r | |
1729 | &Registration\r | |
1730 | );\r | |
1731 | } else {\r | |
1732 | Status = gBS->CreateEventEx (\r | |
1733 | EVT_NOTIFY_SIGNAL,\r | |
5657b268 | 1734 | mSmmIplEvents[Index].NotifyTpl,\r |
e42e9404 | 1735 | mSmmIplEvents[Index].NotifyFunction,\r |
1736 | mSmmIplEvents[Index].NotifyContext,\r | |
1737 | mSmmIplEvents[Index].Guid,\r | |
1738 | &mSmmIplEvents[Index].Event\r | |
1739 | );\r | |
1740 | ASSERT_EFI_ERROR (Status);\r | |
1741 | }\r | |
1742 | }\r | |
1743 | \r | |
1744 | return EFI_SUCCESS;\r | |
1745 | }\r |