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Commit | Line | Data |
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162ed594 | 1 | /** @file\r |
797a9d67 | 2 | DXE Dispatcher.\r |
28a00297 | 3 | \r |
4 | Step #1 - When a FV protocol is added to the system every driver in the FV\r | |
022c6d45 | 5 | is added to the mDiscoveredList. The SOR, Before, and After Depex are\r |
6 | pre-processed as drivers are added to the mDiscoveredList. If an Apriori\r | |
7 | file exists in the FV those drivers are addeded to the\r | |
8 | mScheduledQueue. The mFvHandleList is used to make sure a\r | |
28a00297 | 9 | FV is only processed once.\r |
10 | \r | |
11 | Step #2 - Dispatch. Remove driver from the mScheduledQueue and load and\r | |
022c6d45 | 12 | start it. After mScheduledQueue is drained check the\r |
13 | mDiscoveredList to see if any item has a Depex that is ready to\r | |
28a00297 | 14 | be placed on the mScheduledQueue.\r |
15 | \r | |
022c6d45 | 16 | Step #3 - Adding to the mScheduledQueue requires that you process Before\r |
28a00297 | 17 | and After dependencies. This is done recursively as the call to add\r |
022c6d45 | 18 | to the mScheduledQueue checks for Before and recursively adds\r |
19 | all Befores. It then addes the item that was passed in and then\r | |
28a00297 | 20 | processess the After dependecies by recursively calling the routine.\r |
21 | \r | |
22 | Dispatcher Rules:\r | |
022c6d45 | 23 | The rules for the dispatcher are in chapter 10 of the DXE CIS. Figure 10-3\r |
28a00297 | 24 | is the state diagram for the DXE dispatcher\r |
25 | \r | |
26 | Depex - Dependency Expresion.\r | |
27 | SOR - Schedule On Request - Don't schedule if this bit is set.\r | |
28 | \r | |
d1102dba | 29 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
cd5ebaa0 | 30 | This program and the accompanying materials\r |
23c98c94 | 31 | are licensed and made available under the terms and conditions of the BSD License\r |
32 | which accompanies this distribution. The full text of the license may be found at\r | |
33 | http://opensource.org/licenses/bsd-license.php\r | |
34 | \r | |
35 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
36 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
797a9d67 | 37 | \r |
38 | **/\r | |
28a00297 | 39 | \r |
9c4ac31c | 40 | #include "DxeMain.h"\r |
28a00297 | 41 | \r |
42 | //\r | |
43 | // The Driver List contains one copy of every driver that has been discovered.\r | |
44 | // Items are never removed from the driver list. List of EFI_CORE_DRIVER_ENTRY\r | |
45 | //\r | |
022c6d45 | 46 | LIST_ENTRY mDiscoveredList = INITIALIZE_LIST_HEAD_VARIABLE (mDiscoveredList);\r |
28a00297 | 47 | \r |
48 | //\r | |
49 | // Queue of drivers that are ready to dispatch. This queue is a subset of the\r | |
50 | // mDiscoveredList.list of EFI_CORE_DRIVER_ENTRY.\r | |
51 | //\r | |
52 | LIST_ENTRY mScheduledQueue = INITIALIZE_LIST_HEAD_VARIABLE (mScheduledQueue);\r | |
53 | \r | |
54 | //\r | |
55 | // List of handles who's Fv's have been parsed and added to the mFwDriverList.\r | |
56 | //\r | |
57 | LIST_ENTRY mFvHandleList = INITIALIZE_LIST_HEAD_VARIABLE (mFvHandleList); // list of KNOWN_HANDLE\r | |
58 | \r | |
59 | //\r | |
60 | // Lock for mDiscoveredList, mScheduledQueue, gDispatcherRunning.\r | |
61 | //\r | |
62 | EFI_LOCK mDispatcherLock = EFI_INITIALIZE_LOCK_VARIABLE (TPL_HIGH_LEVEL);\r | |
63 | \r | |
64 | \r | |
65 | //\r | |
66 | // Flag for the DXE Dispacher. TRUE if dispatcher is execuing.\r | |
67 | //\r | |
68 | BOOLEAN gDispatcherRunning = FALSE;\r | |
69 | \r | |
70 | //\r | |
71 | // Module globals to manage the FwVol registration notification event\r | |
72 | //\r | |
73 | EFI_EVENT mFwVolEvent;\r | |
74 | VOID *mFwVolEventRegistration;\r | |
75 | \r | |
76 | //\r | |
77 | // List of file types supported by dispatcher\r | |
78 | //\r | |
022c6d45 | 79 | EFI_FV_FILETYPE mDxeFileTypes[] = {\r |
80 | EFI_FV_FILETYPE_DRIVER,\r | |
202c3279 | 81 | EFI_FV_FILETYPE_COMBINED_SMM_DXE,\r |
022c6d45 | 82 | EFI_FV_FILETYPE_COMBINED_PEIM_DRIVER,\r |
28a00297 | 83 | EFI_FV_FILETYPE_DXE_CORE,\r |
84 | EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE\r | |
85 | };\r | |
86 | \r | |
87 | typedef struct {\r | |
88 | MEDIA_FW_VOL_FILEPATH_DEVICE_PATH File;\r | |
89 | EFI_DEVICE_PATH_PROTOCOL End;\r | |
90 | } FV_FILEPATH_DEVICE_PATH;\r | |
91 | \r | |
e407ceec LG |
92 | FV_FILEPATH_DEVICE_PATH mFvDevicePath;\r |
93 | \r | |
28a00297 | 94 | //\r |
95 | // Function Prototypes\r | |
96 | //\r | |
162ed594 | 97 | /**\r |
98 | Insert InsertedDriverEntry onto the mScheduledQueue. To do this you\r | |
99 | must add any driver with a before dependency on InsertedDriverEntry first.\r | |
100 | You do this by recursively calling this routine. After all the Befores are\r | |
101 | processed you can add InsertedDriverEntry to the mScheduledQueue.\r | |
102 | Then you can add any driver with an After dependency on InsertedDriverEntry\r | |
103 | by recursively calling this routine.\r | |
104 | \r | |
105 | @param InsertedDriverEntry The driver to insert on the ScheduledLink Queue\r | |
106 | \r | |
107 | **/\r | |
28a00297 | 108 | VOID\r |
109 | CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (\r | |
110 | IN EFI_CORE_DRIVER_ENTRY *InsertedDriverEntry\r | |
111 | );\r | |
022c6d45 | 112 | \r |
162ed594 | 113 | /**\r |
114 | Event notification that is fired every time a FV dispatch protocol is added.\r | |
115 | More than one protocol may have been added when this event is fired, so you\r | |
116 | must loop on CoreLocateHandle () to see how many protocols were added and\r | |
117 | do the following to each FV:\r | |
118 | If the Fv has already been processed, skip it. If the Fv has not been\r | |
119 | processed then mark it as being processed, as we are about to process it.\r | |
120 | Read the Fv and add any driver in the Fv to the mDiscoveredList.The\r | |
121 | mDiscoveredList is never free'ed and contains variables that define\r | |
122 | the other states the DXE driver transitions to..\r | |
123 | While you are at it read the A Priori file into memory.\r | |
124 | Place drivers in the A Priori list onto the mScheduledQueue.\r | |
125 | \r | |
022c6d45 | 126 | @param Event The Event that is being processed, not used.\r |
162ed594 | 127 | @param Context Event Context, not used.\r |
128 | \r | |
129 | **/\r | |
28a00297 | 130 | VOID\r |
131 | EFIAPI\r | |
132 | CoreFwVolEventProtocolNotify (\r | |
133 | IN EFI_EVENT Event,\r | |
134 | IN VOID *Context\r | |
135 | );\r | |
136 | \r | |
162ed594 | 137 | /**\r |
022c6d45 | 138 | Convert FvHandle and DriverName into an EFI device path\r |
162ed594 | 139 | \r |
022c6d45 | 140 | @param Fv Fv protocol, needed to read Depex info out of\r |
141 | FLASH.\r | |
142 | @param FvHandle Handle for Fv, needed in the\r | |
143 | EFI_CORE_DRIVER_ENTRY so that the PE image can be\r | |
144 | read out of the FV at a later time.\r | |
145 | @param DriverName Name of driver to add to mDiscoveredList.\r | |
162ed594 | 146 | \r |
147 | @return Pointer to device path constructed from FvHandle and DriverName\r | |
148 | \r | |
149 | **/\r | |
28a00297 | 150 | EFI_DEVICE_PATH_PROTOCOL *\r |
151 | CoreFvToDevicePath (\r | |
0c2b5da8 | 152 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r |
28a00297 | 153 | IN EFI_HANDLE FvHandle,\r |
154 | IN EFI_GUID *DriverName\r | |
155 | );\r | |
156 | \r | |
162ed594 | 157 | /**\r |
158 | Add an entry to the mDiscoveredList. Allocate memory to store the DriverEntry,\r | |
159 | and initilize any state variables. Read the Depex from the FV and store it\r | |
160 | in DriverEntry. Pre-process the Depex to set the SOR, Before and After state.\r | |
161 | The Discovered list is never free'ed and contains booleans that represent the\r | |
162 | other possible DXE driver states.\r | |
163 | \r | |
022c6d45 | 164 | @param Fv Fv protocol, needed to read Depex info out of\r |
165 | FLASH.\r | |
166 | @param FvHandle Handle for Fv, needed in the\r | |
167 | EFI_CORE_DRIVER_ENTRY so that the PE image can be\r | |
168 | read out of the FV at a later time.\r | |
169 | @param DriverName Name of driver to add to mDiscoveredList.\r | |
d3592549 | 170 | @param Type Fv File Type of file to add to mDiscoveredList.\r |
162ed594 | 171 | \r |
022c6d45 | 172 | @retval EFI_SUCCESS If driver was added to the mDiscoveredList.\r |
173 | @retval EFI_ALREADY_STARTED The driver has already been started. Only one\r | |
174 | DriverName may be active in the system at any one\r | |
162ed594 | 175 | time.\r |
176 | \r | |
177 | **/\r | |
28a00297 | 178 | EFI_STATUS\r |
179 | CoreAddToDriverList (\r | |
23c98c94 | 180 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r |
181 | IN EFI_HANDLE FvHandle,\r | |
d3592549 LG |
182 | IN EFI_GUID *DriverName,\r |
183 | IN EFI_FV_FILETYPE Type\r | |
28a00297 | 184 | );\r |
185 | \r | |
162ed594 | 186 | /**\r |
e3b9ab43 | 187 | Get Fv image(s) from the FV through file name, and produce FVB protocol for every Fv image(s).\r |
162ed594 | 188 | \r |
022c6d45 | 189 | @param Fv The FIRMWARE_VOLUME protocol installed on the FV.\r |
190 | @param FvHandle The handle which FVB protocol installed on.\r | |
e3b9ab43 | 191 | @param FileName The file name guid specified.\r |
162ed594 | 192 | \r |
022c6d45 | 193 | @retval EFI_OUT_OF_RESOURCES No enough memory or other resource.\r |
162ed594 | 194 | @retval EFI_SUCCESS Function successfully returned.\r |
195 | \r | |
196 | **/\r | |
022c6d45 | 197 | EFI_STATUS\r |
28a00297 | 198 | CoreProcessFvImageFile (\r |
0c2b5da8 | 199 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r |
28a00297 | 200 | IN EFI_HANDLE FvHandle,\r |
e3b9ab43 | 201 | IN EFI_GUID *FileName\r |
28a00297 | 202 | );\r |
203 | \r | |
162ed594 | 204 | \r |
205 | /**\r | |
206 | Enter critical section by gaining lock on mDispatcherLock.\r | |
207 | \r | |
208 | **/\r | |
28a00297 | 209 | VOID\r |
210 | CoreAcquireDispatcherLock (\r | |
211 | VOID\r | |
212 | )\r | |
28a00297 | 213 | {\r |
214 | CoreAcquireLock (&mDispatcherLock);\r | |
215 | }\r | |
216 | \r | |
162ed594 | 217 | \r |
218 | /**\r | |
219 | Exit critical section by releasing lock on mDispatcherLock.\r | |
220 | \r | |
221 | **/\r | |
28a00297 | 222 | VOID\r |
223 | CoreReleaseDispatcherLock (\r | |
224 | VOID\r | |
225 | )\r | |
28a00297 | 226 | {\r |
227 | CoreReleaseLock (&mDispatcherLock);\r | |
228 | }\r | |
229 | \r | |
28a00297 | 230 | \r |
162ed594 | 231 | /**\r |
28a00297 | 232 | Read Depex and pre-process the Depex for Before and After. If Section Extraction\r |
233 | protocol returns an error via ReadSection defer the reading of the Depex.\r | |
234 | \r | |
022c6d45 | 235 | @param DriverEntry Driver to work on.\r |
28a00297 | 236 | \r |
022c6d45 | 237 | @retval EFI_SUCCESS Depex read and preprossesed\r |
238 | @retval EFI_PROTOCOL_ERROR The section extraction protocol returned an error\r | |
239 | and Depex reading needs to be retried.\r | |
162ed594 | 240 | @retval Error DEPEX not found.\r |
28a00297 | 241 | \r |
162ed594 | 242 | **/\r |
162ed594 | 243 | EFI_STATUS\r |
244 | CoreGetDepexSectionAndPreProccess (\r | |
245 | IN EFI_CORE_DRIVER_ENTRY *DriverEntry\r | |
246 | )\r | |
28a00297 | 247 | {\r |
248 | EFI_STATUS Status;\r | |
249 | EFI_SECTION_TYPE SectionType;\r | |
250 | UINT32 AuthenticationStatus;\r | |
0c2b5da8 | 251 | EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;\r |
28a00297 | 252 | \r |
022c6d45 | 253 | \r |
28a00297 | 254 | Fv = DriverEntry->Fv;\r |
255 | \r | |
256 | //\r | |
257 | // Grab Depex info, it will never be free'ed.\r | |
258 | //\r | |
259 | SectionType = EFI_SECTION_DXE_DEPEX;\r | |
260 | Status = Fv->ReadSection (\r | |
022c6d45 | 261 | DriverEntry->Fv,\r |
28a00297 | 262 | &DriverEntry->FileName,\r |
022c6d45 | 263 | SectionType,\r |
264 | 0,\r | |
265 | &DriverEntry->Depex,\r | |
28a00297 | 266 | (UINTN *)&DriverEntry->DepexSize,\r |
267 | &AuthenticationStatus\r | |
268 | );\r | |
269 | if (EFI_ERROR (Status)) {\r | |
270 | if (Status == EFI_PROTOCOL_ERROR) {\r | |
271 | //\r | |
272 | // The section extraction protocol failed so set protocol error flag\r | |
273 | //\r | |
274 | DriverEntry->DepexProtocolError = TRUE;\r | |
275 | } else {\r | |
276 | //\r | |
8a7d75b0 | 277 | // If no Depex assume UEFI 2.0 driver model\r |
28a00297 | 278 | //\r |
279 | DriverEntry->Depex = NULL;\r | |
280 | DriverEntry->Dependent = TRUE;\r | |
281 | DriverEntry->DepexProtocolError = FALSE;\r | |
282 | }\r | |
283 | } else {\r | |
284 | //\r | |
285 | // Set Before, After, and Unrequested state information based on Depex\r | |
286 | // Driver will be put in Dependent or Unrequested state\r | |
287 | //\r | |
288 | CorePreProcessDepex (DriverEntry);\r | |
289 | DriverEntry->DepexProtocolError = FALSE;\r | |
022c6d45 | 290 | }\r |
28a00297 | 291 | \r |
292 | return Status;\r | |
293 | }\r | |
294 | \r | |
162ed594 | 295 | \r |
296 | /**\r | |
297 | Check every driver and locate a matching one. If the driver is found, the Unrequested\r | |
298 | state flag is cleared.\r | |
299 | \r | |
022c6d45 | 300 | @param FirmwareVolumeHandle The handle of the Firmware Volume that contains\r |
301 | the firmware file specified by DriverName.\r | |
302 | @param DriverName The Driver name to put in the Dependent state.\r | |
162ed594 | 303 | \r |
022c6d45 | 304 | @retval EFI_SUCCESS The DriverName was found and it's SOR bit was\r |
305 | cleared\r | |
306 | @retval EFI_NOT_FOUND The DriverName does not exist or it's SOR bit was\r | |
307 | not set.\r | |
162ed594 | 308 | \r |
309 | **/\r | |
28a00297 | 310 | EFI_STATUS\r |
311 | EFIAPI\r | |
312 | CoreSchedule (\r | |
313 | IN EFI_HANDLE FirmwareVolumeHandle,\r | |
314 | IN EFI_GUID *DriverName\r | |
315 | )\r | |
28a00297 | 316 | {\r |
317 | LIST_ENTRY *Link;\r | |
318 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
319 | \r | |
320 | //\r | |
321 | // Check every driver\r | |
322 | //\r | |
323 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
324 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
325 | if (DriverEntry->FvHandle == FirmwareVolumeHandle &&\r | |
022c6d45 | 326 | DriverEntry->Unrequested &&\r |
28a00297 | 327 | CompareGuid (DriverName, &DriverEntry->FileName)) {\r |
328 | //\r | |
329 | // Move the driver from the Unrequested to the Dependent state\r | |
330 | //\r | |
331 | CoreAcquireDispatcherLock ();\r | |
332 | DriverEntry->Unrequested = FALSE;\r | |
333 | DriverEntry->Dependent = TRUE;\r | |
334 | CoreReleaseDispatcherLock ();\r | |
022c6d45 | 335 | \r |
6a55eea3 | 336 | DEBUG ((DEBUG_DISPATCH, "Schedule FFS(%g) - EFI_SUCCESS\n", DriverName));\r |
d1102dba | 337 | \r |
28a00297 | 338 | return EFI_SUCCESS;\r |
339 | }\r | |
340 | }\r | |
d1102dba | 341 | \r |
6a55eea3 | 342 | DEBUG ((DEBUG_DISPATCH, "Schedule FFS(%g) - EFI_NOT_FOUND\n", DriverName));\r |
d1102dba | 343 | \r |
022c6d45 | 344 | return EFI_NOT_FOUND;\r |
28a00297 | 345 | }\r |
346 | \r | |
347 | \r | |
162ed594 | 348 | \r |
349 | /**\r | |
e94a9ff7 | 350 | Convert a driver from the Untrused back to the Scheduled state.\r |
162ed594 | 351 | \r |
022c6d45 | 352 | @param FirmwareVolumeHandle The handle of the Firmware Volume that contains\r |
353 | the firmware file specified by DriverName.\r | |
354 | @param DriverName The Driver name to put in the Scheduled state\r | |
162ed594 | 355 | \r |
022c6d45 | 356 | @retval EFI_SUCCESS The file was found in the untrusted state, and it\r |
357 | was promoted to the trusted state.\r | |
358 | @retval EFI_NOT_FOUND The file was not found in the untrusted state.\r | |
162ed594 | 359 | \r |
360 | **/\r | |
28a00297 | 361 | EFI_STATUS\r |
362 | EFIAPI\r | |
363 | CoreTrust (\r | |
364 | IN EFI_HANDLE FirmwareVolumeHandle,\r | |
365 | IN EFI_GUID *DriverName\r | |
366 | )\r | |
28a00297 | 367 | {\r |
368 | LIST_ENTRY *Link;\r | |
369 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
370 | \r | |
371 | //\r | |
372 | // Check every driver\r | |
373 | //\r | |
374 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
375 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
376 | if (DriverEntry->FvHandle == FirmwareVolumeHandle &&\r | |
022c6d45 | 377 | DriverEntry->Untrusted &&\r |
28a00297 | 378 | CompareGuid (DriverName, &DriverEntry->FileName)) {\r |
379 | //\r | |
380 | // Transition driver from Untrusted to Scheduled state.\r | |
381 | //\r | |
382 | CoreAcquireDispatcherLock ();\r | |
383 | DriverEntry->Untrusted = FALSE;\r | |
384 | DriverEntry->Scheduled = TRUE;\r | |
385 | InsertTailList (&mScheduledQueue, &DriverEntry->ScheduledLink);\r | |
386 | CoreReleaseDispatcherLock ();\r | |
022c6d45 | 387 | \r |
28a00297 | 388 | return EFI_SUCCESS;\r |
389 | }\r | |
390 | }\r | |
022c6d45 | 391 | return EFI_NOT_FOUND;\r |
28a00297 | 392 | }\r |
393 | \r | |
162ed594 | 394 | /**\r |
395 | This is the main Dispatcher for DXE and it exits when there are no more\r | |
28a00297 | 396 | drivers to run. Drain the mScheduledQueue and load and start a PE\r |
162ed594 | 397 | image for each driver. Search the mDiscoveredList to see if any driver can\r |
28a00297 | 398 | be placed on the mScheduledQueue. If no drivers are placed on the\r |
399 | mScheduledQueue exit the function. On exit it is assumed the Bds()\r | |
162ed594 | 400 | will be called, and when the Bds() exits the Dispatcher will be called\r |
28a00297 | 401 | again.\r |
402 | \r | |
022c6d45 | 403 | @retval EFI_ALREADY_STARTED The DXE Dispatcher is already running\r |
404 | @retval EFI_NOT_FOUND No DXE Drivers were dispatched\r | |
405 | @retval EFI_SUCCESS One or more DXE Drivers were dispatched\r | |
28a00297 | 406 | \r |
162ed594 | 407 | **/\r |
162ed594 | 408 | EFI_STATUS\r |
409 | EFIAPI\r | |
410 | CoreDispatcher (\r | |
411 | VOID\r | |
412 | )\r | |
28a00297 | 413 | {\r |
414 | EFI_STATUS Status;\r | |
415 | EFI_STATUS ReturnStatus;\r | |
416 | LIST_ENTRY *Link;\r | |
417 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
418 | BOOLEAN ReadyToRun;\r | |
202c3279 | 419 | EFI_EVENT DxeDispatchEvent;\r |
d1102dba | 420 | \r |
67e9ab84 | 421 | PERF_FUNCTION_BEGIN ();\r |
28a00297 | 422 | \r |
423 | if (gDispatcherRunning) {\r | |
424 | //\r | |
425 | // If the dispatcher is running don't let it be restarted.\r | |
426 | //\r | |
427 | return EFI_ALREADY_STARTED;\r | |
428 | }\r | |
429 | \r | |
430 | gDispatcherRunning = TRUE;\r | |
431 | \r | |
202c3279 | 432 | Status = CoreCreateEventEx (\r |
433 | EVT_NOTIFY_SIGNAL,\r | |
434 | TPL_NOTIFY,\r | |
ac72474d | 435 | EfiEventEmptyFunction,\r |
202c3279 | 436 | NULL,\r |
437 | &gEfiEventDxeDispatchGuid,\r | |
438 | &DxeDispatchEvent\r | |
439 | );\r | |
440 | if (EFI_ERROR (Status)) {\r | |
441 | return Status;\r | |
442 | }\r | |
28a00297 | 443 | \r |
444 | ReturnStatus = EFI_NOT_FOUND;\r | |
445 | do {\r | |
446 | //\r | |
447 | // Drain the Scheduled Queue\r | |
448 | //\r | |
449 | while (!IsListEmpty (&mScheduledQueue)) {\r | |
450 | DriverEntry = CR (\r | |
451 | mScheduledQueue.ForwardLink,\r | |
452 | EFI_CORE_DRIVER_ENTRY,\r | |
453 | ScheduledLink,\r | |
454 | EFI_CORE_DRIVER_ENTRY_SIGNATURE\r | |
455 | );\r | |
456 | \r | |
457 | //\r | |
458 | // Load the DXE Driver image into memory. If the Driver was transitioned from\r | |
459 | // Untrused to Scheduled it would have already been loaded so we may need to\r | |
460 | // skip the LoadImage\r | |
461 | //\r | |
d3592549 | 462 | if (DriverEntry->ImageHandle == NULL && !DriverEntry->IsFvImage) {\r |
94903510 | 463 | DEBUG ((DEBUG_INFO, "Loading driver %g\n", &DriverEntry->FileName));\r |
28a00297 | 464 | Status = CoreLoadImage (\r |
022c6d45 | 465 | FALSE,\r |
466 | gDxeCoreImageHandle,\r | |
28a00297 | 467 | DriverEntry->FvFileDevicePath,\r |
022c6d45 | 468 | NULL,\r |
469 | 0,\r | |
28a00297 | 470 | &DriverEntry->ImageHandle\r |
471 | );\r | |
472 | \r | |
473 | //\r | |
474 | // Update the driver state to reflect that it's been loaded\r | |
475 | //\r | |
476 | if (EFI_ERROR (Status)) {\r | |
477 | CoreAcquireDispatcherLock ();\r | |
478 | \r | |
479 | if (Status == EFI_SECURITY_VIOLATION) {\r | |
480 | //\r | |
481 | // Take driver from Scheduled to Untrused state\r | |
482 | //\r | |
483 | DriverEntry->Untrusted = TRUE;\r | |
484 | } else {\r | |
485 | //\r | |
486 | // The DXE Driver could not be loaded, and do not attempt to load or start it again.\r | |
022c6d45 | 487 | // Take driver from Scheduled to Initialized.\r |
28a00297 | 488 | //\r |
489 | // This case include the Never Trusted state if EFI_ACCESS_DENIED is returned\r | |
490 | //\r | |
491 | DriverEntry->Initialized = TRUE;\r | |
492 | }\r | |
493 | \r | |
494 | DriverEntry->Scheduled = FALSE;\r | |
495 | RemoveEntryList (&DriverEntry->ScheduledLink);\r | |
022c6d45 | 496 | \r |
28a00297 | 497 | CoreReleaseDispatcherLock ();\r |
022c6d45 | 498 | \r |
28a00297 | 499 | //\r |
500 | // If it's an error don't try the StartImage\r | |
501 | //\r | |
502 | continue;\r | |
503 | }\r | |
504 | }\r | |
505 | \r | |
506 | CoreAcquireDispatcherLock ();\r | |
507 | \r | |
508 | DriverEntry->Scheduled = FALSE;\r | |
509 | DriverEntry->Initialized = TRUE;\r | |
510 | RemoveEntryList (&DriverEntry->ScheduledLink);\r | |
022c6d45 | 511 | \r |
28a00297 | 512 | CoreReleaseDispatcherLock ();\r |
513 | \r | |
d1102dba | 514 | \r |
d3592549 LG |
515 | if (DriverEntry->IsFvImage) {\r |
516 | //\r | |
d1102dba | 517 | // Produce a firmware volume block protocol for FvImage so it gets dispatched from.\r |
d3592549 LG |
518 | //\r |
519 | Status = CoreProcessFvImageFile (DriverEntry->Fv, DriverEntry->FvHandle, &DriverEntry->FileName);\r | |
520 | } else {\r | |
521 | REPORT_STATUS_CODE_WITH_EXTENDED_DATA (\r | |
522 | EFI_PROGRESS_CODE,\r | |
523 | (EFI_SOFTWARE_DXE_CORE | EFI_SW_PC_INIT_BEGIN),\r | |
524 | &DriverEntry->ImageHandle,\r | |
525 | sizeof (DriverEntry->ImageHandle)\r | |
526 | );\r | |
328ce03e | 527 | ASSERT (DriverEntry->ImageHandle != NULL);\r |
d1102dba | 528 | \r |
d3592549 | 529 | Status = CoreStartImage (DriverEntry->ImageHandle, NULL, NULL);\r |
d1102dba | 530 | \r |
d3592549 LG |
531 | REPORT_STATUS_CODE_WITH_EXTENDED_DATA (\r |
532 | EFI_PROGRESS_CODE,\r | |
533 | (EFI_SOFTWARE_DXE_CORE | EFI_SW_PC_INIT_END),\r | |
534 | &DriverEntry->ImageHandle,\r | |
535 | sizeof (DriverEntry->ImageHandle)\r | |
536 | );\r | |
537 | }\r | |
28a00297 | 538 | \r |
539 | ReturnStatus = EFI_SUCCESS;\r | |
540 | }\r | |
541 | \r | |
0e4483bc LG |
542 | //\r |
543 | // Now DXE Dispatcher finished one round of dispatch, signal an event group\r | |
544 | // so that SMM Dispatcher get chance to dispatch SMM Drivers which depend\r | |
545 | // on UEFI protocols\r | |
546 | //\r | |
547 | if (!EFI_ERROR (ReturnStatus)) {\r | |
548 | CoreSignalEvent (DxeDispatchEvent);\r | |
549 | }\r | |
550 | \r | |
28a00297 | 551 | //\r |
552 | // Search DriverList for items to place on Scheduled Queue\r | |
553 | //\r | |
554 | ReadyToRun = FALSE;\r | |
555 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
556 | DriverEntry = CR (Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
557 | \r | |
558 | if (DriverEntry->DepexProtocolError){\r | |
559 | //\r | |
560 | // If Section Extraction Protocol did not let the Depex be read before retry the read\r | |
561 | //\r | |
562 | Status = CoreGetDepexSectionAndPreProccess (DriverEntry);\r | |
022c6d45 | 563 | }\r |
28a00297 | 564 | \r |
565 | if (DriverEntry->Dependent) {\r | |
566 | if (CoreIsSchedulable (DriverEntry)) {\r | |
022c6d45 | 567 | CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (DriverEntry);\r |
28a00297 | 568 | ReadyToRun = TRUE;\r |
022c6d45 | 569 | }\r |
6a55eea3 | 570 | } else {\r |
571 | if (DriverEntry->Unrequested) {\r | |
572 | DEBUG ((DEBUG_DISPATCH, "Evaluate DXE DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r | |
573 | DEBUG ((DEBUG_DISPATCH, " SOR = Not Requested\n"));\r | |
574 | DEBUG ((DEBUG_DISPATCH, " RESULT = FALSE\n"));\r | |
575 | }\r | |
28a00297 | 576 | }\r |
577 | }\r | |
578 | } while (ReadyToRun);\r | |
579 | \r | |
202c3279 | 580 | //\r |
581 | // Close DXE dispatch Event\r | |
582 | //\r | |
583 | CoreCloseEvent (DxeDispatchEvent);\r | |
584 | \r | |
28a00297 | 585 | gDispatcherRunning = FALSE;\r |
586 | \r | |
67e9ab84 BD |
587 | PERF_FUNCTION_END ();\r |
588 | \r | |
28a00297 | 589 | return ReturnStatus;\r |
590 | }\r | |
591 | \r | |
28a00297 | 592 | \r |
162ed594 | 593 | /**\r |
594 | Insert InsertedDriverEntry onto the mScheduledQueue. To do this you\r | |
28a00297 | 595 | must add any driver with a before dependency on InsertedDriverEntry first.\r |
596 | You do this by recursively calling this routine. After all the Befores are\r | |
162ed594 | 597 | processed you can add InsertedDriverEntry to the mScheduledQueue.\r |
598 | Then you can add any driver with an After dependency on InsertedDriverEntry\r | |
28a00297 | 599 | by recursively calling this routine.\r |
600 | \r | |
162ed594 | 601 | @param InsertedDriverEntry The driver to insert on the ScheduledLink Queue\r |
28a00297 | 602 | \r |
162ed594 | 603 | **/\r |
162ed594 | 604 | VOID\r |
605 | CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (\r | |
606 | IN EFI_CORE_DRIVER_ENTRY *InsertedDriverEntry\r | |
607 | )\r | |
28a00297 | 608 | {\r |
609 | LIST_ENTRY *Link;\r | |
610 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
611 | \r | |
612 | //\r | |
613 | // Process Before Dependency\r | |
614 | //\r | |
615 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
616 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
6a55eea3 | 617 | if (DriverEntry->Before && DriverEntry->Dependent && DriverEntry != InsertedDriverEntry) {\r |
618 | DEBUG ((DEBUG_DISPATCH, "Evaluate DXE DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r | |
619 | DEBUG ((DEBUG_DISPATCH, " BEFORE FFS(%g) = ", &DriverEntry->BeforeAfterGuid));\r | |
28a00297 | 620 | if (CompareGuid (&InsertedDriverEntry->FileName, &DriverEntry->BeforeAfterGuid)) {\r |
621 | //\r | |
622 | // Recursively process BEFORE\r | |
623 | //\r | |
6a55eea3 | 624 | DEBUG ((DEBUG_DISPATCH, "TRUE\n END\n RESULT = TRUE\n"));\r |
28a00297 | 625 | CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (DriverEntry);\r |
6a55eea3 | 626 | } else {\r |
627 | DEBUG ((DEBUG_DISPATCH, "FALSE\n END\n RESULT = FALSE\n"));\r | |
28a00297 | 628 | }\r |
629 | }\r | |
630 | }\r | |
631 | \r | |
632 | //\r | |
633 | // Convert driver from Dependent to Scheduled state\r | |
634 | //\r | |
635 | CoreAcquireDispatcherLock ();\r | |
636 | \r | |
637 | InsertedDriverEntry->Dependent = FALSE;\r | |
638 | InsertedDriverEntry->Scheduled = TRUE;\r | |
639 | InsertTailList (&mScheduledQueue, &InsertedDriverEntry->ScheduledLink);\r | |
022c6d45 | 640 | \r |
28a00297 | 641 | CoreReleaseDispatcherLock ();\r |
642 | \r | |
643 | //\r | |
644 | // Process After Dependency\r | |
645 | //\r | |
646 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
647 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
6a55eea3 | 648 | if (DriverEntry->After && DriverEntry->Dependent && DriverEntry != InsertedDriverEntry) {\r |
649 | DEBUG ((DEBUG_DISPATCH, "Evaluate DXE DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r | |
650 | DEBUG ((DEBUG_DISPATCH, " AFTER FFS(%g) = ", &DriverEntry->BeforeAfterGuid));\r | |
28a00297 | 651 | if (CompareGuid (&InsertedDriverEntry->FileName, &DriverEntry->BeforeAfterGuid)) {\r |
652 | //\r | |
653 | // Recursively process AFTER\r | |
654 | //\r | |
6a55eea3 | 655 | DEBUG ((DEBUG_DISPATCH, "TRUE\n END\n RESULT = TRUE\n"));\r |
28a00297 | 656 | CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (DriverEntry);\r |
6a55eea3 | 657 | } else {\r |
658 | DEBUG ((DEBUG_DISPATCH, "FALSE\n END\n RESULT = FALSE\n"));\r | |
28a00297 | 659 | }\r |
660 | }\r | |
661 | }\r | |
662 | }\r | |
663 | \r | |
28a00297 | 664 | \r |
162ed594 | 665 | /**\r |
28a00297 | 666 | Return TRUE if the Fv has been processed, FALSE if not.\r |
667 | \r | |
022c6d45 | 668 | @param FvHandle The handle of a FV that's being tested\r |
28a00297 | 669 | \r |
022c6d45 | 670 | @retval TRUE Fv protocol on FvHandle has been processed\r |
e94a9ff7 | 671 | @retval FALSE Fv protocol on FvHandle has not yet been processed\r |
28a00297 | 672 | \r |
162ed594 | 673 | **/\r |
162ed594 | 674 | BOOLEAN\r |
675 | FvHasBeenProcessed (\r | |
676 | IN EFI_HANDLE FvHandle\r | |
677 | )\r | |
28a00297 | 678 | {\r |
679 | LIST_ENTRY *Link;\r | |
680 | KNOWN_HANDLE *KnownHandle;\r | |
681 | \r | |
682 | for (Link = mFvHandleList.ForwardLink; Link != &mFvHandleList; Link = Link->ForwardLink) {\r | |
683 | KnownHandle = CR(Link, KNOWN_HANDLE, Link, KNOWN_HANDLE_SIGNATURE);\r | |
684 | if (KnownHandle->Handle == FvHandle) {\r | |
685 | return TRUE;\r | |
686 | }\r | |
687 | }\r | |
688 | return FALSE;\r | |
689 | }\r | |
690 | \r | |
28a00297 | 691 | \r |
162ed594 | 692 | /**\r |
28a00297 | 693 | Remember that Fv protocol on FvHandle has had it's drivers placed on the\r |
d1102dba | 694 | mDiscoveredList. This fucntion adds entries on the mFvHandleList if new\r |
2fc46f86 LG |
695 | entry is different from one in mFvHandleList by checking FvImage Guid.\r |
696 | Items are never removed/freed from the mFvHandleList.\r | |
28a00297 | 697 | \r |
162ed594 | 698 | @param FvHandle The handle of a FV that has been processed\r |
28a00297 | 699 | \r |
2fc46f86 | 700 | @return A point to new added FvHandle entry. If FvHandle with the same FvImage guid\r |
d1102dba | 701 | has been added, NULL will return.\r |
2fc46f86 | 702 | \r |
162ed594 | 703 | **/\r |
d1102dba | 704 | KNOWN_HANDLE *\r |
162ed594 | 705 | FvIsBeingProcesssed (\r |
706 | IN EFI_HANDLE FvHandle\r | |
707 | )\r | |
28a00297 | 708 | {\r |
2fc46f86 LG |
709 | EFI_STATUS Status;\r |
710 | EFI_GUID FvNameGuid;\r | |
711 | BOOLEAN FvNameGuidIsFound;\r | |
712 | UINT32 ExtHeaderOffset;\r | |
713 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
714 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
715 | EFI_FV_BLOCK_MAP_ENTRY *BlockMap;\r | |
716 | UINTN LbaOffset;\r | |
717 | UINTN Index;\r | |
718 | EFI_LBA LbaIndex;\r | |
719 | LIST_ENTRY *Link;\r | |
720 | KNOWN_HANDLE *KnownHandle;\r | |
721 | \r | |
ac30bca0 SZ |
722 | FwVolHeader = NULL;\r |
723 | \r | |
2fc46f86 LG |
724 | //\r |
725 | // Get the FirmwareVolumeBlock protocol on that handle\r | |
726 | //\r | |
727 | FvNameGuidIsFound = FALSE;\r | |
728 | Status = CoreHandleProtocol (FvHandle, &gEfiFirmwareVolumeBlockProtocolGuid, (VOID **)&Fvb);\r | |
729 | if (!EFI_ERROR (Status)) {\r | |
730 | //\r | |
731 | // Get the full FV header based on FVB protocol.\r | |
732 | //\r | |
bdc9d5a5 | 733 | ASSERT (Fvb != NULL);\r |
2fc46f86 | 734 | Status = GetFwVolHeader (Fvb, &FwVolHeader);\r |
bdc9d5a5 LG |
735 | if (!EFI_ERROR (Status)) {\r |
736 | ASSERT (FwVolHeader != NULL);\r | |
737 | if (VerifyFvHeaderChecksum (FwVolHeader) && FwVolHeader->ExtHeaderOffset != 0) {\r | |
738 | ExtHeaderOffset = (UINT32) FwVolHeader->ExtHeaderOffset;\r | |
739 | BlockMap = FwVolHeader->BlockMap;\r | |
740 | LbaIndex = 0;\r | |
741 | LbaOffset = 0;\r | |
742 | //\r | |
743 | // Find LbaIndex and LbaOffset for FV extension header based on BlockMap.\r | |
744 | //\r | |
745 | while ((BlockMap->NumBlocks != 0) || (BlockMap->Length != 0)) {\r | |
746 | for (Index = 0; Index < BlockMap->NumBlocks && ExtHeaderOffset >= BlockMap->Length; Index ++) {\r | |
747 | ExtHeaderOffset -= BlockMap->Length;\r | |
748 | LbaIndex ++;\r | |
749 | }\r | |
750 | //\r | |
751 | // Check whether FvExtHeader is crossing the multi block range.\r | |
752 | //\r | |
753 | if (Index < BlockMap->NumBlocks) {\r | |
754 | LbaOffset = ExtHeaderOffset;\r | |
755 | break;\r | |
756 | }\r | |
757 | BlockMap++;\r | |
2fc46f86 LG |
758 | }\r |
759 | //\r | |
bdc9d5a5 | 760 | // Read FvNameGuid from FV extension header.\r |
2fc46f86 | 761 | //\r |
bdc9d5a5 LG |
762 | Status = ReadFvbData (Fvb, &LbaIndex, &LbaOffset, sizeof (FvNameGuid), (UINT8 *) &FvNameGuid);\r |
763 | if (!EFI_ERROR (Status)) {\r | |
764 | FvNameGuidIsFound = TRUE;\r | |
2fc46f86 | 765 | }\r |
2fc46f86 | 766 | }\r |
bdc9d5a5 | 767 | CoreFreePool (FwVolHeader);\r |
2fc46f86 | 768 | }\r |
2fc46f86 LG |
769 | }\r |
770 | \r | |
771 | if (FvNameGuidIsFound) {\r | |
772 | //\r | |
773 | // Check whether the FV image with the found FvNameGuid has been processed.\r | |
774 | //\r | |
775 | for (Link = mFvHandleList.ForwardLink; Link != &mFvHandleList; Link = Link->ForwardLink) {\r | |
776 | KnownHandle = CR(Link, KNOWN_HANDLE, Link, KNOWN_HANDLE_SIGNATURE);\r | |
777 | if (CompareGuid (&FvNameGuid, &KnownHandle->FvNameGuid)) {\r | |
e0617988 | 778 | DEBUG ((EFI_D_ERROR, "FvImage on FvHandle %p and %p has the same FvNameGuid %g.\n", FvHandle, KnownHandle->Handle, &FvNameGuid));\r |
2fc46f86 LG |
779 | return NULL;\r |
780 | }\r | |
781 | }\r | |
782 | }\r | |
28a00297 | 783 | \r |
2fc46f86 | 784 | KnownHandle = AllocateZeroPool (sizeof (KNOWN_HANDLE));\r |
28a00297 | 785 | ASSERT (KnownHandle != NULL);\r |
786 | \r | |
787 | KnownHandle->Signature = KNOWN_HANDLE_SIGNATURE;\r | |
788 | KnownHandle->Handle = FvHandle;\r | |
2fc46f86 LG |
789 | if (FvNameGuidIsFound) {\r |
790 | CopyGuid (&KnownHandle->FvNameGuid, &FvNameGuid);\r | |
791 | }\r | |
28a00297 | 792 | InsertTailList (&mFvHandleList, &KnownHandle->Link);\r |
2fc46f86 | 793 | return KnownHandle;\r |
28a00297 | 794 | }\r |
795 | \r | |
796 | \r | |
797 | \r | |
162ed594 | 798 | \r |
799 | /**\r | |
800 | Convert FvHandle and DriverName into an EFI device path\r | |
801 | \r | |
022c6d45 | 802 | @param Fv Fv protocol, needed to read Depex info out of\r |
803 | FLASH.\r | |
804 | @param FvHandle Handle for Fv, needed in the\r | |
805 | EFI_CORE_DRIVER_ENTRY so that the PE image can be\r | |
806 | read out of the FV at a later time.\r | |
807 | @param DriverName Name of driver to add to mDiscoveredList.\r | |
162ed594 | 808 | \r |
809 | @return Pointer to device path constructed from FvHandle and DriverName\r | |
810 | \r | |
811 | **/\r | |
28a00297 | 812 | EFI_DEVICE_PATH_PROTOCOL *\r |
813 | CoreFvToDevicePath (\r | |
0c2b5da8 | 814 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r |
28a00297 | 815 | IN EFI_HANDLE FvHandle,\r |
816 | IN EFI_GUID *DriverName\r | |
817 | )\r | |
28a00297 | 818 | {\r |
819 | EFI_STATUS Status;\r | |
820 | EFI_DEVICE_PATH_PROTOCOL *FvDevicePath;\r | |
821 | EFI_DEVICE_PATH_PROTOCOL *FileNameDevicePath;\r | |
822 | \r | |
823 | //\r | |
824 | // Remember the device path of the FV\r | |
825 | //\r | |
826 | Status = CoreHandleProtocol (FvHandle, &gEfiDevicePathProtocolGuid, (VOID **)&FvDevicePath);\r | |
827 | if (EFI_ERROR (Status)) {\r | |
828 | FileNameDevicePath = NULL;\r | |
829 | } else {\r | |
830 | //\r | |
831 | // Build a device path to the file in the FV to pass into gBS->LoadImage\r | |
832 | //\r | |
833 | EfiInitializeFwVolDevicepathNode (&mFvDevicePath.File, DriverName);\r | |
1232b214 | 834 | SetDevicePathEndNode (&mFvDevicePath.End);\r |
28a00297 | 835 | \r |
9c4ac31c | 836 | FileNameDevicePath = AppendDevicePath (\r |
022c6d45 | 837 | FvDevicePath,\r |
28a00297 | 838 | (EFI_DEVICE_PATH_PROTOCOL *)&mFvDevicePath\r |
839 | );\r | |
840 | }\r | |
841 | \r | |
842 | return FileNameDevicePath;\r | |
843 | }\r | |
844 | \r | |
845 | \r | |
846 | \r | |
162ed594 | 847 | /**\r |
848 | Add an entry to the mDiscoveredList. Allocate memory to store the DriverEntry,\r | |
28a00297 | 849 | and initilize any state variables. Read the Depex from the FV and store it\r |
850 | in DriverEntry. Pre-process the Depex to set the SOR, Before and After state.\r | |
851 | The Discovered list is never free'ed and contains booleans that represent the\r | |
852 | other possible DXE driver states.\r | |
853 | \r | |
022c6d45 | 854 | @param Fv Fv protocol, needed to read Depex info out of\r |
855 | FLASH.\r | |
856 | @param FvHandle Handle for Fv, needed in the\r | |
857 | EFI_CORE_DRIVER_ENTRY so that the PE image can be\r | |
858 | read out of the FV at a later time.\r | |
859 | @param DriverName Name of driver to add to mDiscoveredList.\r | |
d3592549 | 860 | @param Type Fv File Type of file to add to mDiscoveredList.\r |
28a00297 | 861 | \r |
022c6d45 | 862 | @retval EFI_SUCCESS If driver was added to the mDiscoveredList.\r |
863 | @retval EFI_ALREADY_STARTED The driver has already been started. Only one\r | |
864 | DriverName may be active in the system at any one\r | |
162ed594 | 865 | time.\r |
28a00297 | 866 | \r |
162ed594 | 867 | **/\r |
868 | EFI_STATUS\r | |
869 | CoreAddToDriverList (\r | |
870 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r | |
871 | IN EFI_HANDLE FvHandle,\r | |
d3592549 LG |
872 | IN EFI_GUID *DriverName,\r |
873 | IN EFI_FV_FILETYPE Type\r | |
162ed594 | 874 | )\r |
28a00297 | 875 | {\r |
876 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
877 | \r | |
022c6d45 | 878 | \r |
28a00297 | 879 | //\r |
022c6d45 | 880 | // Create the Driver Entry for the list. ZeroPool initializes lots of variables to\r |
28a00297 | 881 | // NULL or FALSE.\r |
882 | //\r | |
9c4ac31c | 883 | DriverEntry = AllocateZeroPool (sizeof (EFI_CORE_DRIVER_ENTRY));\r |
28a00297 | 884 | ASSERT (DriverEntry != NULL);\r |
d3592549 LG |
885 | if (Type == EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) {\r |
886 | DriverEntry->IsFvImage = TRUE;\r | |
887 | }\r | |
28a00297 | 888 | \r |
889 | DriverEntry->Signature = EFI_CORE_DRIVER_ENTRY_SIGNATURE;\r | |
e94a9ff7 | 890 | CopyGuid (&DriverEntry->FileName, DriverName);\r |
28a00297 | 891 | DriverEntry->FvHandle = FvHandle;\r |
892 | DriverEntry->Fv = Fv;\r | |
893 | DriverEntry->FvFileDevicePath = CoreFvToDevicePath (Fv, FvHandle, DriverName);\r | |
894 | \r | |
895 | CoreGetDepexSectionAndPreProccess (DriverEntry);\r | |
022c6d45 | 896 | \r |
28a00297 | 897 | CoreAcquireDispatcherLock ();\r |
022c6d45 | 898 | \r |
28a00297 | 899 | InsertTailList (&mDiscoveredList, &DriverEntry->Link);\r |
900 | \r | |
901 | CoreReleaseDispatcherLock ();\r | |
902 | \r | |
903 | return EFI_SUCCESS;\r | |
904 | }\r | |
905 | \r | |
bbc0f1bb | 906 | \r |
162ed594 | 907 | /**\r |
bbc0f1bb | 908 | Check if a FV Image type file (EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) is\r |
909 | described by a EFI_HOB_FIRMWARE_VOLUME2 Hob.\r | |
910 | \r | |
2fc46f86 | 911 | @param FvNameGuid The FV image guid specified.\r |
022c6d45 | 912 | @param DriverName The driver guid specified.\r |
bbc0f1bb | 913 | \r |
022c6d45 | 914 | @retval TRUE This file is found in a EFI_HOB_FIRMWARE_VOLUME2\r |
915 | Hob.\r | |
162ed594 | 916 | @retval FALSE Not found.\r |
bbc0f1bb | 917 | \r |
162ed594 | 918 | **/\r |
162ed594 | 919 | BOOLEAN\r |
920 | FvFoundInHobFv2 (\r | |
2fc46f86 | 921 | IN CONST EFI_GUID *FvNameGuid,\r |
162ed594 | 922 | IN CONST EFI_GUID *DriverName\r |
923 | )\r | |
bbc0f1bb | 924 | {\r |
925 | EFI_PEI_HOB_POINTERS HobFv2;\r | |
022c6d45 | 926 | \r |
bbc0f1bb | 927 | HobFv2.Raw = GetHobList ();\r |
022c6d45 | 928 | \r |
bbc0f1bb | 929 | while ((HobFv2.Raw = GetNextHob (EFI_HOB_TYPE_FV2, HobFv2.Raw)) != NULL) {\r |
2fc46f86 LG |
930 | //\r |
931 | // Compare parent FvNameGuid and FileGuid both.\r | |
932 | //\r | |
933 | if (CompareGuid (DriverName, &HobFv2.FirmwareVolume2->FileName) &&\r | |
934 | CompareGuid (FvNameGuid, &HobFv2.FirmwareVolume2->FvName)) {\r | |
b0d803fe | 935 | return TRUE;\r |
bbc0f1bb | 936 | }\r |
937 | HobFv2.Raw = GET_NEXT_HOB (HobFv2);\r | |
938 | }\r | |
939 | \r | |
940 | return FALSE;\r | |
941 | }\r | |
28a00297 | 942 | \r |
a82e52b3 SZ |
943 | /**\r |
944 | Find USED_SIZE FV_EXT_TYPE entry in FV extension header and get the FV used size.\r | |
945 | \r | |
946 | @param[in] FvHeader Pointer to FV header.\r | |
947 | @param[out] FvUsedSize Pointer to FV used size returned,\r | |
948 | only valid if USED_SIZE FV_EXT_TYPE entry is found.\r | |
949 | @param[out] EraseByte Pointer to erase byte returned,\r | |
950 | only valid if USED_SIZE FV_EXT_TYPE entry is found.\r | |
951 | \r | |
952 | @retval TRUE USED_SIZE FV_EXT_TYPE entry is found,\r | |
953 | FV used size and erase byte are returned.\r | |
954 | @retval FALSE No USED_SIZE FV_EXT_TYPE entry found.\r | |
955 | \r | |
956 | **/\r | |
957 | BOOLEAN\r | |
958 | GetFvUsedSize (\r | |
959 | IN EFI_FIRMWARE_VOLUME_HEADER *FvHeader,\r | |
960 | OUT UINT32 *FvUsedSize,\r | |
961 | OUT UINT8 *EraseByte\r | |
962 | )\r | |
963 | {\r | |
964 | UINT16 ExtHeaderOffset;\r | |
965 | EFI_FIRMWARE_VOLUME_EXT_HEADER *ExtHeader;\r | |
966 | EFI_FIRMWARE_VOLUME_EXT_ENTRY *ExtEntryList;\r | |
967 | EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE *ExtEntryUsedSize;\r | |
968 | \r | |
969 | ExtHeaderOffset = ReadUnaligned16 (&FvHeader->ExtHeaderOffset);\r | |
970 | if (ExtHeaderOffset != 0) {\r | |
971 | ExtHeader = (EFI_FIRMWARE_VOLUME_EXT_HEADER *) ((UINT8 *) FvHeader + ExtHeaderOffset);\r | |
972 | ExtEntryList = (EFI_FIRMWARE_VOLUME_EXT_ENTRY *) (ExtHeader + 1);\r | |
973 | while ((UINTN) ExtEntryList < ((UINTN) ExtHeader + ReadUnaligned32 (&ExtHeader->ExtHeaderSize))) {\r | |
974 | if (ReadUnaligned16 (&ExtEntryList->ExtEntryType) == EFI_FV_EXT_TYPE_USED_SIZE_TYPE) {\r | |
975 | //\r | |
976 | // USED_SIZE FV_EXT_TYPE entry is found.\r | |
977 | //\r | |
978 | ExtEntryUsedSize = (EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE *) ExtEntryList;\r | |
979 | *FvUsedSize = ReadUnaligned32 (&ExtEntryUsedSize->UsedSize);\r | |
980 | if ((ReadUnaligned32 (&FvHeader->Attributes) & EFI_FVB2_ERASE_POLARITY) != 0) {\r | |
981 | *EraseByte = 0xFF;\r | |
982 | } else {\r | |
983 | *EraseByte = 0;\r | |
984 | }\r | |
985 | DEBUG ((\r | |
986 | DEBUG_INFO,\r | |
987 | "FV at 0x%x has 0x%x used size, and erase byte is 0x%02x\n",\r | |
988 | FvHeader,\r | |
989 | *FvUsedSize,\r | |
990 | *EraseByte\r | |
991 | ));\r | |
992 | return TRUE;\r | |
993 | }\r | |
994 | ExtEntryList = (EFI_FIRMWARE_VOLUME_EXT_ENTRY *)\r | |
995 | ((UINT8 *) ExtEntryList + ReadUnaligned16 (&ExtEntryList->ExtEntrySize));\r | |
996 | }\r | |
997 | }\r | |
28a00297 | 998 | \r |
a82e52b3 SZ |
999 | //\r |
1000 | // No USED_SIZE FV_EXT_TYPE entry found.\r | |
1001 | //\r | |
1002 | return FALSE;\r | |
1003 | }\r | |
162ed594 | 1004 | \r |
1005 | /**\r | |
e3b9ab43 | 1006 | Get Fv image(s) from the FV through file name, and produce FVB protocol for every Fv image(s).\r |
162ed594 | 1007 | \r |
022c6d45 | 1008 | @param Fv The FIRMWARE_VOLUME protocol installed on the FV.\r |
1009 | @param FvHandle The handle which FVB protocol installed on.\r | |
e3b9ab43 | 1010 | @param FileName The file name guid specified.\r |
162ed594 | 1011 | \r |
022c6d45 | 1012 | @retval EFI_OUT_OF_RESOURCES No enough memory or other resource.\r |
162ed594 | 1013 | @retval EFI_SUCCESS Function successfully returned.\r |
1014 | \r | |
1015 | **/\r | |
022c6d45 | 1016 | EFI_STATUS\r |
28a00297 | 1017 | CoreProcessFvImageFile (\r |
0c2b5da8 | 1018 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r |
28a00297 | 1019 | IN EFI_HANDLE FvHandle,\r |
e3b9ab43 | 1020 | IN EFI_GUID *FileName\r |
28a00297 | 1021 | )\r |
28a00297 | 1022 | {\r |
1023 | EFI_STATUS Status;\r | |
1024 | EFI_SECTION_TYPE SectionType;\r | |
1025 | UINT32 AuthenticationStatus;\r | |
1026 | VOID *Buffer;\r | |
38837959 | 1027 | VOID *AlignedBuffer;\r |
28a00297 | 1028 | UINTN BufferSize;\r |
38837959 | 1029 | EFI_FIRMWARE_VOLUME_HEADER *FvHeader;\r |
022c6d45 | 1030 | UINT32 FvAlignment;\r |
022ff6bb | 1031 | EFI_DEVICE_PATH_PROTOCOL *FvFileDevicePath;\r |
a82e52b3 SZ |
1032 | UINT32 FvUsedSize;\r |
1033 | UINT8 EraseByte;\r | |
e3b9ab43 | 1034 | UINTN Index;\r |
28a00297 | 1035 | \r |
1036 | //\r | |
e3b9ab43 | 1037 | // Read firmware volume section(s)\r |
28a00297 | 1038 | //\r |
e94a9ff7 | 1039 | SectionType = EFI_SECTION_FIRMWARE_VOLUME_IMAGE;\r |
022ff6bb | 1040 | \r |
e3b9ab43 SZ |
1041 | Index = 0;\r |
1042 | do {\r | |
1043 | FvHeader = NULL;\r | |
1044 | FvAlignment = 0;\r | |
1045 | Buffer = NULL;\r | |
1046 | BufferSize = 0;\r | |
1047 | AlignedBuffer = NULL;\r | |
1048 | Status = Fv->ReadSection (\r | |
1049 | Fv,\r | |
1050 | FileName,\r | |
1051 | SectionType,\r | |
1052 | Index,\r | |
1053 | &Buffer,\r | |
1054 | &BufferSize,\r | |
1055 | &AuthenticationStatus\r | |
1056 | );\r | |
1057 | if (!EFI_ERROR (Status)) {\r | |
1058 | //\r | |
1059 | // Evaluate the authentication status of the Firmware Volume through\r | |
1060 | // Security Architectural Protocol\r | |
1061 | //\r | |
1062 | if (gSecurity != NULL) {\r | |
1063 | FvFileDevicePath = CoreFvToDevicePath (Fv, FvHandle, FileName);\r | |
1064 | Status = gSecurity->FileAuthenticationState (\r | |
1065 | gSecurity,\r | |
1066 | AuthenticationStatus,\r | |
1067 | FvFileDevicePath\r | |
1068 | );\r | |
1069 | if (FvFileDevicePath != NULL) {\r | |
1070 | FreePool (FvFileDevicePath);\r | |
1071 | }\r | |
1072 | \r | |
1073 | if (Status != EFI_SUCCESS) {\r | |
1074 | //\r | |
1075 | // Security check failed. The firmware volume should not be used for any purpose.\r | |
1076 | //\r | |
1077 | if (Buffer != NULL) {\r | |
1078 | FreePool (Buffer);\r | |
1079 | }\r | |
1080 | break;\r | |
022ff6bb | 1081 | }\r |
022ff6bb | 1082 | }\r |
022ff6bb | 1083 | \r |
38837959 | 1084 | //\r |
e3b9ab43 | 1085 | // FvImage should be at its required alignment.\r |
38837959 | 1086 | //\r |
e3b9ab43 | 1087 | FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) Buffer;\r |
38837959 | 1088 | //\r |
e3b9ab43 SZ |
1089 | // If EFI_FVB2_WEAK_ALIGNMENT is set in the volume header then the first byte of the volume\r |
1090 | // can be aligned on any power-of-two boundary. A weakly aligned volume can not be moved from\r | |
1091 | // its initial linked location and maintain its alignment.\r | |
38837959 | 1092 | //\r |
e3b9ab43 SZ |
1093 | if ((ReadUnaligned32 (&FvHeader->Attributes) & EFI_FVB2_WEAK_ALIGNMENT) != EFI_FVB2_WEAK_ALIGNMENT) {\r |
1094 | //\r | |
1095 | // Get FvHeader alignment\r | |
1096 | //\r | |
1097 | FvAlignment = 1 << ((ReadUnaligned32 (&FvHeader->Attributes) & EFI_FVB2_ALIGNMENT) >> 16);\r | |
1098 | //\r | |
1099 | // FvAlignment must be greater than or equal to 8 bytes of the minimum FFS alignment value.\r | |
1100 | //\r | |
1101 | if (FvAlignment < 8) {\r | |
1102 | FvAlignment = 8;\r | |
1103 | }\r | |
5d0b4eb4 | 1104 | \r |
e3b9ab43 SZ |
1105 | DEBUG ((\r |
1106 | DEBUG_INFO,\r | |
1107 | "%a() FV at 0x%x, FvAlignment required is 0x%x\n",\r | |
1108 | __FUNCTION__,\r | |
1109 | FvHeader,\r | |
1110 | FvAlignment\r | |
1111 | ));\r | |
a82e52b3 | 1112 | \r |
3837e91c | 1113 | //\r |
e3b9ab43 | 1114 | // Check FvImage alignment.\r |
3837e91c | 1115 | //\r |
e3b9ab43 | 1116 | if ((UINTN) FvHeader % FvAlignment != 0) {\r |
5d0b4eb4 | 1117 | //\r |
e3b9ab43 | 1118 | // Allocate the aligned buffer for the FvImage.\r |
5d0b4eb4 | 1119 | //\r |
e3b9ab43 SZ |
1120 | AlignedBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BufferSize), (UINTN) FvAlignment);\r |
1121 | if (AlignedBuffer == NULL) {\r | |
1122 | FreePool (Buffer);\r | |
1123 | Status = EFI_OUT_OF_RESOURCES;\r | |
1124 | break;\r | |
1125 | } else {\r | |
a82e52b3 | 1126 | //\r |
e3b9ab43 | 1127 | // Move FvImage into the aligned buffer and release the original buffer.\r |
a82e52b3 | 1128 | //\r |
e3b9ab43 SZ |
1129 | if (GetFvUsedSize (FvHeader, &FvUsedSize, &EraseByte)) {\r |
1130 | //\r | |
1131 | // Copy the used bytes and fill the rest with the erase value.\r | |
1132 | //\r | |
1133 | CopyMem (AlignedBuffer, FvHeader, (UINTN) FvUsedSize);\r | |
1134 | SetMem (\r | |
1135 | (UINT8 *) AlignedBuffer + FvUsedSize,\r | |
1136 | (UINTN) (BufferSize - FvUsedSize),\r | |
1137 | EraseByte\r | |
1138 | );\r | |
1139 | } else {\r | |
1140 | CopyMem (AlignedBuffer, Buffer, BufferSize);\r | |
1141 | }\r | |
1142 | FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) AlignedBuffer;\r | |
1143 | FreePool (Buffer);\r | |
1144 | Buffer = NULL;\r | |
a82e52b3 | 1145 | }\r |
5d0b4eb4 | 1146 | }\r |
3837e91c | 1147 | }\r |
e3b9ab43 SZ |
1148 | //\r |
1149 | // Produce a FVB protocol for the file\r | |
1150 | //\r | |
1151 | Status = ProduceFVBProtocolOnBuffer (\r | |
1152 | (EFI_PHYSICAL_ADDRESS) (UINTN) FvHeader,\r | |
1153 | (UINT64)BufferSize,\r | |
1154 | FvHandle,\r | |
1155 | AuthenticationStatus,\r | |
1156 | NULL\r | |
1157 | );\r | |
38837959 | 1158 | }\r |
28a00297 | 1159 | \r |
e3b9ab43 SZ |
1160 | if (EFI_ERROR (Status)) {\r |
1161 | //\r | |
1162 | // ReadSection or Produce FVB failed, Free data buffer\r | |
1163 | //\r | |
1164 | if (Buffer != NULL) {\r | |
1165 | FreePool (Buffer);\r | |
1166 | }\r | |
1167 | \r | |
1168 | if (AlignedBuffer != NULL) {\r | |
1169 | FreeAlignedPages (AlignedBuffer, EFI_SIZE_TO_PAGES (BufferSize));\r | |
1170 | }\r | |
022c6d45 | 1171 | \r |
e3b9ab43 SZ |
1172 | break;\r |
1173 | } else {\r | |
1174 | Index++;\r | |
38837959 | 1175 | }\r |
e3b9ab43 | 1176 | } while (TRUE);\r |
28a00297 | 1177 | \r |
e3b9ab43 SZ |
1178 | if (Index > 0) {\r |
1179 | //\r | |
1180 | // At least one FvImage has been processed successfully.\r | |
1181 | //\r | |
1182 | return EFI_SUCCESS;\r | |
1183 | } else {\r | |
1184 | return Status;\r | |
1185 | }\r | |
28a00297 | 1186 | }\r |
1187 | \r | |
28a00297 | 1188 | \r |
162ed594 | 1189 | /**\r |
1190 | Event notification that is fired every time a FV dispatch protocol is added.\r | |
28a00297 | 1191 | More than one protocol may have been added when this event is fired, so you\r |
1192 | must loop on CoreLocateHandle () to see how many protocols were added and\r | |
1193 | do the following to each FV:\r | |
162ed594 | 1194 | If the Fv has already been processed, skip it. If the Fv has not been\r |
28a00297 | 1195 | processed then mark it as being processed, as we are about to process it.\r |
162ed594 | 1196 | Read the Fv and add any driver in the Fv to the mDiscoveredList.The\r |
28a00297 | 1197 | mDiscoveredList is never free'ed and contains variables that define\r |
162ed594 | 1198 | the other states the DXE driver transitions to..\r |
28a00297 | 1199 | While you are at it read the A Priori file into memory.\r |
1200 | Place drivers in the A Priori list onto the mScheduledQueue.\r | |
1201 | \r | |
022c6d45 | 1202 | @param Event The Event that is being processed, not used.\r |
162ed594 | 1203 | @param Context Event Context, not used.\r |
28a00297 | 1204 | \r |
162ed594 | 1205 | **/\r |
162ed594 | 1206 | VOID\r |
1207 | EFIAPI\r | |
1208 | CoreFwVolEventProtocolNotify (\r | |
1209 | IN EFI_EVENT Event,\r | |
1210 | IN VOID *Context\r | |
1211 | )\r | |
28a00297 | 1212 | {\r |
1213 | EFI_STATUS Status;\r | |
1214 | EFI_STATUS GetNextFileStatus;\r | |
0c2b5da8 | 1215 | EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;\r |
28a00297 | 1216 | EFI_DEVICE_PATH_PROTOCOL *FvDevicePath;\r |
1217 | EFI_HANDLE FvHandle;\r | |
1218 | UINTN BufferSize;\r | |
1219 | EFI_GUID NameGuid;\r | |
1220 | UINTN Key;\r | |
1221 | EFI_FV_FILETYPE Type;\r | |
1222 | EFI_FV_FILE_ATTRIBUTES Attributes;\r | |
1223 | UINTN Size;\r | |
1224 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
1225 | EFI_GUID *AprioriFile;\r | |
1226 | UINTN AprioriEntryCount;\r | |
1227 | UINTN Index;\r | |
1228 | LIST_ENTRY *Link;\r | |
1229 | UINT32 AuthenticationStatus;\r | |
1230 | UINTN SizeOfBuffer;\r | |
d3592549 | 1231 | VOID *DepexBuffer;\r |
2fc46f86 | 1232 | KNOWN_HANDLE *KnownHandle;\r |
28a00297 | 1233 | \r |
4e1005ec ED |
1234 | FvHandle = NULL;\r |
1235 | \r | |
28a00297 | 1236 | while (TRUE) {\r |
1237 | BufferSize = sizeof (EFI_HANDLE);\r | |
1238 | Status = CoreLocateHandle (\r | |
e94a9ff7 | 1239 | ByRegisterNotify,\r |
1240 | NULL,\r | |
1241 | mFwVolEventRegistration,\r | |
1242 | &BufferSize,\r | |
1243 | &FvHandle\r | |
1244 | );\r | |
28a00297 | 1245 | if (EFI_ERROR (Status)) {\r |
1246 | //\r | |
1247 | // If no more notification events exit\r | |
1248 | //\r | |
1249 | return;\r | |
1250 | }\r | |
1251 | \r | |
1252 | if (FvHasBeenProcessed (FvHandle)) {\r | |
1253 | //\r | |
1254 | // This Fv has already been processed so lets skip it!\r | |
1255 | //\r | |
1256 | continue;\r | |
1257 | }\r | |
1258 | \r | |
28a00297 | 1259 | //\r |
1260 | // Since we are about to process this Fv mark it as processed.\r | |
1261 | //\r | |
2fc46f86 LG |
1262 | KnownHandle = FvIsBeingProcesssed (FvHandle);\r |
1263 | if (KnownHandle == NULL) {\r | |
1264 | //\r | |
d1102dba | 1265 | // The FV with the same FV name guid has already been processed.\r |
2fc46f86 LG |
1266 | // So lets skip it!\r |
1267 | //\r | |
1268 | continue;\r | |
1269 | }\r | |
28a00297 | 1270 | \r |
0c2b5da8 | 1271 | Status = CoreHandleProtocol (FvHandle, &gEfiFirmwareVolume2ProtocolGuid, (VOID **)&Fv);\r |
d2fbaaab | 1272 | if (EFI_ERROR (Status) || Fv == NULL) {\r |
28a00297 | 1273 | //\r |
cd539d48 | 1274 | // FvHandle must have Firmware Volume2 protocol thus we should never get here.\r |
28a00297 | 1275 | //\r |
1276 | ASSERT (FALSE);\r | |
1277 | continue;\r | |
1278 | }\r | |
022c6d45 | 1279 | \r |
28a00297 | 1280 | Status = CoreHandleProtocol (FvHandle, &gEfiDevicePathProtocolGuid, (VOID **)&FvDevicePath);\r |
1281 | if (EFI_ERROR (Status)) {\r | |
1282 | //\r | |
1283 | // The Firmware volume doesn't have device path, can't be dispatched.\r | |
1284 | //\r | |
1285 | continue;\r | |
1286 | }\r | |
022c6d45 | 1287 | \r |
28a00297 | 1288 | //\r |
022c6d45 | 1289 | // Discover Drivers in FV and add them to the Discovered Driver List.\r |
1290 | // Process EFI_FV_FILETYPE_DRIVER type and then EFI_FV_FILETYPE_COMBINED_PEIM_DRIVER\r | |
28a00297 | 1291 | // EFI_FV_FILETYPE_DXE_CORE is processed to produce a Loaded Image protocol for the core\r |
1292 | // EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE is processed to create a Fvb\r | |
1293 | //\r | |
e94a9ff7 | 1294 | for (Index = 0; Index < sizeof (mDxeFileTypes) / sizeof (EFI_FV_FILETYPE); Index++) {\r |
28a00297 | 1295 | //\r |
1296 | // Initialize the search key\r | |
1297 | //\r | |
1298 | Key = 0;\r | |
1299 | do {\r | |
1300 | Type = mDxeFileTypes[Index];\r | |
1301 | GetNextFileStatus = Fv->GetNextFile (\r | |
022c6d45 | 1302 | Fv,\r |
28a00297 | 1303 | &Key,\r |
022c6d45 | 1304 | &Type,\r |
1305 | &NameGuid,\r | |
1306 | &Attributes,\r | |
28a00297 | 1307 | &Size\r |
1308 | );\r | |
1309 | if (!EFI_ERROR (GetNextFileStatus)) {\r | |
1310 | if (Type == EFI_FV_FILETYPE_DXE_CORE) {\r | |
1311 | //\r | |
1312 | // If this is the DXE core fill in it's DevicePath & DeviceHandle\r | |
1313 | //\r | |
1314 | if (gDxeCoreLoadedImage->FilePath == NULL) {\r | |
1315 | if (CompareGuid (&NameGuid, gDxeCoreFileName)) {\r | |
1316 | //\r | |
1317 | // Maybe One specail Fv cantains only one DXE_CORE module, so its device path must\r | |
1318 | // be initialized completely.\r | |
1319 | //\r | |
1320 | EfiInitializeFwVolDevicepathNode (&mFvDevicePath.File, &NameGuid);\r | |
1232b214 | 1321 | SetDevicePathEndNode (&mFvDevicePath.End);\r |
28a00297 | 1322 | \r |
9c4ac31c | 1323 | gDxeCoreLoadedImage->FilePath = DuplicateDevicePath (\r |
28a00297 | 1324 | (EFI_DEVICE_PATH_PROTOCOL *)&mFvDevicePath\r |
1325 | );\r | |
1326 | gDxeCoreLoadedImage->DeviceHandle = FvHandle;\r | |
1327 | }\r | |
1328 | }\r | |
1329 | } else if (Type == EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) {\r | |
bbc0f1bb | 1330 | //\r |
022c6d45 | 1331 | // Check if this EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE file has already\r |
bbc0f1bb | 1332 | // been extracted.\r |
1333 | //\r | |
2fc46f86 | 1334 | if (FvFoundInHobFv2 (&KnownHandle->FvNameGuid, &NameGuid)) {\r |
bbc0f1bb | 1335 | continue;\r |
1336 | }\r | |
d3592549 | 1337 | \r |
28a00297 | 1338 | //\r |
d3592549 | 1339 | // Check if this EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE file has SMM depex section.\r |
28a00297 | 1340 | //\r |
d3592549 LG |
1341 | DepexBuffer = NULL;\r |
1342 | SizeOfBuffer = 0;\r | |
1343 | Status = Fv->ReadSection (\r | |
1344 | Fv,\r | |
1345 | &NameGuid,\r | |
1346 | EFI_SECTION_SMM_DEPEX,\r | |
1347 | 0,\r | |
1348 | &DepexBuffer,\r | |
1349 | &SizeOfBuffer,\r | |
1350 | &AuthenticationStatus\r | |
1351 | );\r | |
1352 | if (!EFI_ERROR (Status)) {\r | |
1353 | //\r | |
c74a25f0 | 1354 | // If SMM depex section is found, this FV image is invalid to be supported.\r |
d1102dba | 1355 | // ASSERT FALSE to report this FV image.\r |
d3592549 LG |
1356 | //\r |
1357 | FreePool (DepexBuffer);\r | |
c74a25f0 | 1358 | ASSERT (FALSE);\r |
d3592549 LG |
1359 | }\r |
1360 | \r | |
1361 | //\r | |
1362 | // Check if this EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE file has DXE depex section.\r | |
1363 | //\r | |
1364 | DepexBuffer = NULL;\r | |
1365 | SizeOfBuffer = 0;\r | |
1366 | Status = Fv->ReadSection (\r | |
1367 | Fv,\r | |
1368 | &NameGuid,\r | |
1369 | EFI_SECTION_DXE_DEPEX,\r | |
1370 | 0,\r | |
1371 | &DepexBuffer,\r | |
1372 | &SizeOfBuffer,\r | |
1373 | &AuthenticationStatus\r | |
1374 | );\r | |
1375 | if (EFI_ERROR (Status)) {\r | |
1376 | //\r | |
d1102dba | 1377 | // If no depex section, produce a firmware volume block protocol for it so it gets dispatched from.\r |
d3592549 LG |
1378 | //\r |
1379 | CoreProcessFvImageFile (Fv, FvHandle, &NameGuid);\r | |
1380 | } else {\r | |
1381 | //\r | |
1382 | // If depex section is found, this FV image will be dispatched until its depex is evaluated to TRUE.\r | |
1383 | //\r | |
1384 | FreePool (DepexBuffer);\r | |
1385 | CoreAddToDriverList (Fv, FvHandle, &NameGuid, Type);\r | |
1386 | }\r | |
28a00297 | 1387 | } else {\r |
1388 | //\r | |
1389 | // Transition driver from Undiscovered to Discovered state\r | |
1390 | //\r | |
d3592549 | 1391 | CoreAddToDriverList (Fv, FvHandle, &NameGuid, Type);\r |
28a00297 | 1392 | }\r |
1393 | }\r | |
1394 | } while (!EFI_ERROR (GetNextFileStatus));\r | |
1395 | }\r | |
022c6d45 | 1396 | \r |
28a00297 | 1397 | //\r |
1398 | // Read the array of GUIDs from the Apriori file if it is present in the firmware volume\r | |
1399 | //\r | |
1400 | AprioriFile = NULL;\r | |
1401 | Status = Fv->ReadSection (\r | |
1402 | Fv,\r | |
1403 | &gAprioriGuid,\r | |
1404 | EFI_SECTION_RAW,\r | |
1405 | 0,\r | |
1406 | (VOID **)&AprioriFile,\r | |
1407 | &SizeOfBuffer,\r | |
1408 | &AuthenticationStatus\r | |
1409 | );\r | |
1410 | if (!EFI_ERROR (Status)) {\r | |
1411 | AprioriEntryCount = SizeOfBuffer / sizeof (EFI_GUID);\r | |
1412 | } else {\r | |
1413 | AprioriEntryCount = 0;\r | |
1414 | }\r | |
1415 | \r | |
1416 | //\r | |
1417 | // Put drivers on Apriori List on the Scheduled queue. The Discovered List includes\r | |
1418 | // drivers not in the current FV and these must be skipped since the a priori list\r | |
1419 | // is only valid for the FV that it resided in.\r | |
1420 | //\r | |
022c6d45 | 1421 | \r |
28a00297 | 1422 | for (Index = 0; Index < AprioriEntryCount; Index++) {\r |
1423 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
1424 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
1425 | if (CompareGuid (&DriverEntry->FileName, &AprioriFile[Index]) &&\r | |
1426 | (FvHandle == DriverEntry->FvHandle)) {\r | |
6a55eea3 | 1427 | CoreAcquireDispatcherLock ();\r |
28a00297 | 1428 | DriverEntry->Dependent = FALSE;\r |
1429 | DriverEntry->Scheduled = TRUE;\r | |
1430 | InsertTailList (&mScheduledQueue, &DriverEntry->ScheduledLink);\r | |
6a55eea3 | 1431 | CoreReleaseDispatcherLock ();\r |
1432 | DEBUG ((DEBUG_DISPATCH, "Evaluate DXE DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r | |
1433 | DEBUG ((DEBUG_DISPATCH, " RESULT = TRUE (Apriori)\n"));\r | |
28a00297 | 1434 | break;\r |
1435 | }\r | |
1436 | }\r | |
1437 | }\r | |
1438 | \r | |
28a00297 | 1439 | //\r |
022c6d45 | 1440 | // Free data allocated by Fv->ReadSection ()\r |
28a00297 | 1441 | //\r |
022c6d45 | 1442 | CoreFreePool (AprioriFile);\r |
28a00297 | 1443 | }\r |
1444 | }\r | |
1445 | \r | |
1446 | \r | |
28a00297 | 1447 | \r |
162ed594 | 1448 | /**\r |
28a00297 | 1449 | Initialize the dispatcher. Initialize the notification function that runs when\r |
e94a9ff7 | 1450 | an FV2 protocol is added to the system.\r |
28a00297 | 1451 | \r |
162ed594 | 1452 | **/\r |
1453 | VOID\r | |
1454 | CoreInitializeDispatcher (\r | |
1455 | VOID\r | |
1456 | )\r | |
28a00297 | 1457 | {\r |
67e9ab84 BD |
1458 | PERF_FUNCTION_BEGIN ();\r |
1459 | \r | |
7899b797 | 1460 | mFwVolEvent = EfiCreateProtocolNotifyEvent (\r |
022c6d45 | 1461 | &gEfiFirmwareVolume2ProtocolGuid,\r |
28a00297 | 1462 | TPL_CALLBACK,\r |
1463 | CoreFwVolEventProtocolNotify,\r | |
1464 | NULL,\r | |
7899b797 | 1465 | &mFwVolEventRegistration\r |
28a00297 | 1466 | );\r |
67e9ab84 BD |
1467 | \r |
1468 | PERF_FUNCTION_END ();\r | |
28a00297 | 1469 | }\r |
1470 | \r | |
1471 | //\r | |
1472 | // Function only used in debug builds\r | |
1473 | //\r | |
162ed594 | 1474 | \r |
1475 | /**\r | |
1476 | Traverse the discovered list for any drivers that were discovered but not loaded\r | |
1477 | because the dependency experessions evaluated to false.\r | |
1478 | \r | |
1479 | **/\r | |
28a00297 | 1480 | VOID\r |
1481 | CoreDisplayDiscoveredNotDispatched (\r | |
1482 | VOID\r | |
1483 | )\r | |
28a00297 | 1484 | {\r |
1485 | LIST_ENTRY *Link;\r | |
1486 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
1487 | \r | |
1488 | for (Link = mDiscoveredList.ForwardLink;Link !=&mDiscoveredList; Link = Link->ForwardLink) {\r | |
1489 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
1490 | if (DriverEntry->Dependent) {\r | |
162ed594 | 1491 | DEBUG ((DEBUG_LOAD, "Driver %g was discovered but not loaded!!\n", &DriverEntry->FileName));\r |
28a00297 | 1492 | }\r |
1493 | }\r | |
1494 | }\r |