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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 |
187 | Get the driver from the FV through driver name, and produce a FVB protocol on FvHandle.\r | |
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 | |
191 | @param DriverName The driver guid specified.\r | |
162ed594 | 192 | \r |
022c6d45 | 193 | @retval EFI_OUT_OF_RESOURCES No enough memory or other resource.\r |
194 | @retval EFI_VOLUME_CORRUPTED Corrupted volume.\r | |
162ed594 | 195 | @retval EFI_SUCCESS Function successfully returned.\r |
196 | \r | |
197 | **/\r | |
022c6d45 | 198 | EFI_STATUS\r |
28a00297 | 199 | CoreProcessFvImageFile (\r |
0c2b5da8 | 200 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r |
28a00297 | 201 | IN EFI_HANDLE FvHandle,\r |
202 | IN EFI_GUID *DriverName\r | |
203 | );\r | |
204 | \r | |
162ed594 | 205 | \r |
206 | /**\r | |
207 | Enter critical section by gaining lock on mDispatcherLock.\r | |
208 | \r | |
209 | **/\r | |
28a00297 | 210 | VOID\r |
211 | CoreAcquireDispatcherLock (\r | |
212 | VOID\r | |
213 | )\r | |
28a00297 | 214 | {\r |
215 | CoreAcquireLock (&mDispatcherLock);\r | |
216 | }\r | |
217 | \r | |
162ed594 | 218 | \r |
219 | /**\r | |
220 | Exit critical section by releasing lock on mDispatcherLock.\r | |
221 | \r | |
222 | **/\r | |
28a00297 | 223 | VOID\r |
224 | CoreReleaseDispatcherLock (\r | |
225 | VOID\r | |
226 | )\r | |
28a00297 | 227 | {\r |
228 | CoreReleaseLock (&mDispatcherLock);\r | |
229 | }\r | |
230 | \r | |
28a00297 | 231 | \r |
162ed594 | 232 | /**\r |
28a00297 | 233 | Read Depex and pre-process the Depex for Before and After. If Section Extraction\r |
234 | protocol returns an error via ReadSection defer the reading of the Depex.\r | |
235 | \r | |
022c6d45 | 236 | @param DriverEntry Driver to work on.\r |
28a00297 | 237 | \r |
022c6d45 | 238 | @retval EFI_SUCCESS Depex read and preprossesed\r |
239 | @retval EFI_PROTOCOL_ERROR The section extraction protocol returned an error\r | |
240 | and Depex reading needs to be retried.\r | |
162ed594 | 241 | @retval Error DEPEX not found.\r |
28a00297 | 242 | \r |
162ed594 | 243 | **/\r |
162ed594 | 244 | EFI_STATUS\r |
245 | CoreGetDepexSectionAndPreProccess (\r | |
246 | IN EFI_CORE_DRIVER_ENTRY *DriverEntry\r | |
247 | )\r | |
28a00297 | 248 | {\r |
249 | EFI_STATUS Status;\r | |
250 | EFI_SECTION_TYPE SectionType;\r | |
251 | UINT32 AuthenticationStatus;\r | |
0c2b5da8 | 252 | EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;\r |
28a00297 | 253 | \r |
022c6d45 | 254 | \r |
28a00297 | 255 | Fv = DriverEntry->Fv;\r |
256 | \r | |
257 | //\r | |
258 | // Grab Depex info, it will never be free'ed.\r | |
259 | //\r | |
260 | SectionType = EFI_SECTION_DXE_DEPEX;\r | |
261 | Status = Fv->ReadSection (\r | |
022c6d45 | 262 | DriverEntry->Fv,\r |
28a00297 | 263 | &DriverEntry->FileName,\r |
022c6d45 | 264 | SectionType,\r |
265 | 0,\r | |
266 | &DriverEntry->Depex,\r | |
28a00297 | 267 | (UINTN *)&DriverEntry->DepexSize,\r |
268 | &AuthenticationStatus\r | |
269 | );\r | |
270 | if (EFI_ERROR (Status)) {\r | |
271 | if (Status == EFI_PROTOCOL_ERROR) {\r | |
272 | //\r | |
273 | // The section extraction protocol failed so set protocol error flag\r | |
274 | //\r | |
275 | DriverEntry->DepexProtocolError = TRUE;\r | |
276 | } else {\r | |
277 | //\r | |
8a7d75b0 | 278 | // If no Depex assume UEFI 2.0 driver model\r |
28a00297 | 279 | //\r |
280 | DriverEntry->Depex = NULL;\r | |
281 | DriverEntry->Dependent = TRUE;\r | |
282 | DriverEntry->DepexProtocolError = FALSE;\r | |
283 | }\r | |
284 | } else {\r | |
285 | //\r | |
286 | // Set Before, After, and Unrequested state information based on Depex\r | |
287 | // Driver will be put in Dependent or Unrequested state\r | |
288 | //\r | |
289 | CorePreProcessDepex (DriverEntry);\r | |
290 | DriverEntry->DepexProtocolError = FALSE;\r | |
022c6d45 | 291 | }\r |
28a00297 | 292 | \r |
293 | return Status;\r | |
294 | }\r | |
295 | \r | |
162ed594 | 296 | \r |
297 | /**\r | |
298 | Check every driver and locate a matching one. If the driver is found, the Unrequested\r | |
299 | state flag is cleared.\r | |
300 | \r | |
022c6d45 | 301 | @param FirmwareVolumeHandle The handle of the Firmware Volume that contains\r |
302 | the firmware file specified by DriverName.\r | |
303 | @param DriverName The Driver name to put in the Dependent state.\r | |
162ed594 | 304 | \r |
022c6d45 | 305 | @retval EFI_SUCCESS The DriverName was found and it's SOR bit was\r |
306 | cleared\r | |
307 | @retval EFI_NOT_FOUND The DriverName does not exist or it's SOR bit was\r | |
308 | not set.\r | |
162ed594 | 309 | \r |
310 | **/\r | |
28a00297 | 311 | EFI_STATUS\r |
312 | EFIAPI\r | |
313 | CoreSchedule (\r | |
314 | IN EFI_HANDLE FirmwareVolumeHandle,\r | |
315 | IN EFI_GUID *DriverName\r | |
316 | )\r | |
28a00297 | 317 | {\r |
318 | LIST_ENTRY *Link;\r | |
319 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
320 | \r | |
321 | //\r | |
322 | // Check every driver\r | |
323 | //\r | |
324 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
325 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
326 | if (DriverEntry->FvHandle == FirmwareVolumeHandle &&\r | |
022c6d45 | 327 | DriverEntry->Unrequested &&\r |
28a00297 | 328 | CompareGuid (DriverName, &DriverEntry->FileName)) {\r |
329 | //\r | |
330 | // Move the driver from the Unrequested to the Dependent state\r | |
331 | //\r | |
332 | CoreAcquireDispatcherLock ();\r | |
333 | DriverEntry->Unrequested = FALSE;\r | |
334 | DriverEntry->Dependent = TRUE;\r | |
335 | CoreReleaseDispatcherLock ();\r | |
022c6d45 | 336 | \r |
6a55eea3 | 337 | DEBUG ((DEBUG_DISPATCH, "Schedule FFS(%g) - EFI_SUCCESS\n", DriverName));\r |
d1102dba | 338 | \r |
28a00297 | 339 | return EFI_SUCCESS;\r |
340 | }\r | |
341 | }\r | |
d1102dba | 342 | \r |
6a55eea3 | 343 | DEBUG ((DEBUG_DISPATCH, "Schedule FFS(%g) - EFI_NOT_FOUND\n", DriverName));\r |
d1102dba | 344 | \r |
022c6d45 | 345 | return EFI_NOT_FOUND;\r |
28a00297 | 346 | }\r |
347 | \r | |
348 | \r | |
162ed594 | 349 | \r |
350 | /**\r | |
e94a9ff7 | 351 | Convert a driver from the Untrused back to the Scheduled state.\r |
162ed594 | 352 | \r |
022c6d45 | 353 | @param FirmwareVolumeHandle The handle of the Firmware Volume that contains\r |
354 | the firmware file specified by DriverName.\r | |
355 | @param DriverName The Driver name to put in the Scheduled state\r | |
162ed594 | 356 | \r |
022c6d45 | 357 | @retval EFI_SUCCESS The file was found in the untrusted state, and it\r |
358 | was promoted to the trusted state.\r | |
359 | @retval EFI_NOT_FOUND The file was not found in the untrusted state.\r | |
162ed594 | 360 | \r |
361 | **/\r | |
28a00297 | 362 | EFI_STATUS\r |
363 | EFIAPI\r | |
364 | CoreTrust (\r | |
365 | IN EFI_HANDLE FirmwareVolumeHandle,\r | |
366 | IN EFI_GUID *DriverName\r | |
367 | )\r | |
28a00297 | 368 | {\r |
369 | LIST_ENTRY *Link;\r | |
370 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
371 | \r | |
372 | //\r | |
373 | // Check every driver\r | |
374 | //\r | |
375 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
376 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
377 | if (DriverEntry->FvHandle == FirmwareVolumeHandle &&\r | |
022c6d45 | 378 | DriverEntry->Untrusted &&\r |
28a00297 | 379 | CompareGuid (DriverName, &DriverEntry->FileName)) {\r |
380 | //\r | |
381 | // Transition driver from Untrusted to Scheduled state.\r | |
382 | //\r | |
383 | CoreAcquireDispatcherLock ();\r | |
384 | DriverEntry->Untrusted = FALSE;\r | |
385 | DriverEntry->Scheduled = TRUE;\r | |
386 | InsertTailList (&mScheduledQueue, &DriverEntry->ScheduledLink);\r | |
387 | CoreReleaseDispatcherLock ();\r | |
022c6d45 | 388 | \r |
28a00297 | 389 | return EFI_SUCCESS;\r |
390 | }\r | |
391 | }\r | |
022c6d45 | 392 | return EFI_NOT_FOUND;\r |
28a00297 | 393 | }\r |
394 | \r | |
162ed594 | 395 | /**\r |
396 | This is the main Dispatcher for DXE and it exits when there are no more\r | |
28a00297 | 397 | drivers to run. Drain the mScheduledQueue and load and start a PE\r |
162ed594 | 398 | image for each driver. Search the mDiscoveredList to see if any driver can\r |
28a00297 | 399 | be placed on the mScheduledQueue. If no drivers are placed on the\r |
400 | mScheduledQueue exit the function. On exit it is assumed the Bds()\r | |
162ed594 | 401 | will be called, and when the Bds() exits the Dispatcher will be called\r |
28a00297 | 402 | again.\r |
403 | \r | |
022c6d45 | 404 | @retval EFI_ALREADY_STARTED The DXE Dispatcher is already running\r |
405 | @retval EFI_NOT_FOUND No DXE Drivers were dispatched\r | |
406 | @retval EFI_SUCCESS One or more DXE Drivers were dispatched\r | |
28a00297 | 407 | \r |
162ed594 | 408 | **/\r |
162ed594 | 409 | EFI_STATUS\r |
410 | EFIAPI\r | |
411 | CoreDispatcher (\r | |
412 | VOID\r | |
413 | )\r | |
28a00297 | 414 | {\r |
415 | EFI_STATUS Status;\r | |
416 | EFI_STATUS ReturnStatus;\r | |
417 | LIST_ENTRY *Link;\r | |
418 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
419 | BOOLEAN ReadyToRun;\r | |
202c3279 | 420 | EFI_EVENT DxeDispatchEvent;\r |
d1102dba | 421 | \r |
67e9ab84 | 422 | PERF_FUNCTION_BEGIN ();\r |
28a00297 | 423 | \r |
424 | if (gDispatcherRunning) {\r | |
425 | //\r | |
426 | // If the dispatcher is running don't let it be restarted.\r | |
427 | //\r | |
428 | return EFI_ALREADY_STARTED;\r | |
429 | }\r | |
430 | \r | |
431 | gDispatcherRunning = TRUE;\r | |
432 | \r | |
202c3279 | 433 | Status = CoreCreateEventEx (\r |
434 | EVT_NOTIFY_SIGNAL,\r | |
435 | TPL_NOTIFY,\r | |
ac72474d | 436 | EfiEventEmptyFunction,\r |
202c3279 | 437 | NULL,\r |
438 | &gEfiEventDxeDispatchGuid,\r | |
439 | &DxeDispatchEvent\r | |
440 | );\r | |
441 | if (EFI_ERROR (Status)) {\r | |
442 | return Status;\r | |
443 | }\r | |
28a00297 | 444 | \r |
445 | ReturnStatus = EFI_NOT_FOUND;\r | |
446 | do {\r | |
447 | //\r | |
448 | // Drain the Scheduled Queue\r | |
449 | //\r | |
450 | while (!IsListEmpty (&mScheduledQueue)) {\r | |
451 | DriverEntry = CR (\r | |
452 | mScheduledQueue.ForwardLink,\r | |
453 | EFI_CORE_DRIVER_ENTRY,\r | |
454 | ScheduledLink,\r | |
455 | EFI_CORE_DRIVER_ENTRY_SIGNATURE\r | |
456 | );\r | |
457 | \r | |
458 | //\r | |
459 | // Load the DXE Driver image into memory. If the Driver was transitioned from\r | |
460 | // Untrused to Scheduled it would have already been loaded so we may need to\r | |
461 | // skip the LoadImage\r | |
462 | //\r | |
d3592549 | 463 | if (DriverEntry->ImageHandle == NULL && !DriverEntry->IsFvImage) {\r |
94903510 | 464 | DEBUG ((DEBUG_INFO, "Loading driver %g\n", &DriverEntry->FileName));\r |
28a00297 | 465 | Status = CoreLoadImage (\r |
022c6d45 | 466 | FALSE,\r |
467 | gDxeCoreImageHandle,\r | |
28a00297 | 468 | DriverEntry->FvFileDevicePath,\r |
022c6d45 | 469 | NULL,\r |
470 | 0,\r | |
28a00297 | 471 | &DriverEntry->ImageHandle\r |
472 | );\r | |
473 | \r | |
474 | //\r | |
475 | // Update the driver state to reflect that it's been loaded\r | |
476 | //\r | |
477 | if (EFI_ERROR (Status)) {\r | |
478 | CoreAcquireDispatcherLock ();\r | |
479 | \r | |
480 | if (Status == EFI_SECURITY_VIOLATION) {\r | |
481 | //\r | |
482 | // Take driver from Scheduled to Untrused state\r | |
483 | //\r | |
484 | DriverEntry->Untrusted = TRUE;\r | |
485 | } else {\r | |
486 | //\r | |
487 | // The DXE Driver could not be loaded, and do not attempt to load or start it again.\r | |
022c6d45 | 488 | // Take driver from Scheduled to Initialized.\r |
28a00297 | 489 | //\r |
490 | // This case include the Never Trusted state if EFI_ACCESS_DENIED is returned\r | |
491 | //\r | |
492 | DriverEntry->Initialized = TRUE;\r | |
493 | }\r | |
494 | \r | |
495 | DriverEntry->Scheduled = FALSE;\r | |
496 | RemoveEntryList (&DriverEntry->ScheduledLink);\r | |
022c6d45 | 497 | \r |
28a00297 | 498 | CoreReleaseDispatcherLock ();\r |
022c6d45 | 499 | \r |
28a00297 | 500 | //\r |
501 | // If it's an error don't try the StartImage\r | |
502 | //\r | |
503 | continue;\r | |
504 | }\r | |
505 | }\r | |
506 | \r | |
507 | CoreAcquireDispatcherLock ();\r | |
508 | \r | |
509 | DriverEntry->Scheduled = FALSE;\r | |
510 | DriverEntry->Initialized = TRUE;\r | |
511 | RemoveEntryList (&DriverEntry->ScheduledLink);\r | |
022c6d45 | 512 | \r |
28a00297 | 513 | CoreReleaseDispatcherLock ();\r |
514 | \r | |
d1102dba | 515 | \r |
d3592549 LG |
516 | if (DriverEntry->IsFvImage) {\r |
517 | //\r | |
d1102dba | 518 | // Produce a firmware volume block protocol for FvImage so it gets dispatched from.\r |
d3592549 LG |
519 | //\r |
520 | Status = CoreProcessFvImageFile (DriverEntry->Fv, DriverEntry->FvHandle, &DriverEntry->FileName);\r | |
521 | } else {\r | |
522 | REPORT_STATUS_CODE_WITH_EXTENDED_DATA (\r | |
523 | EFI_PROGRESS_CODE,\r | |
524 | (EFI_SOFTWARE_DXE_CORE | EFI_SW_PC_INIT_BEGIN),\r | |
525 | &DriverEntry->ImageHandle,\r | |
526 | sizeof (DriverEntry->ImageHandle)\r | |
527 | );\r | |
328ce03e | 528 | ASSERT (DriverEntry->ImageHandle != NULL);\r |
d1102dba | 529 | \r |
d3592549 | 530 | Status = CoreStartImage (DriverEntry->ImageHandle, NULL, NULL);\r |
d1102dba | 531 | \r |
d3592549 LG |
532 | REPORT_STATUS_CODE_WITH_EXTENDED_DATA (\r |
533 | EFI_PROGRESS_CODE,\r | |
534 | (EFI_SOFTWARE_DXE_CORE | EFI_SW_PC_INIT_END),\r | |
535 | &DriverEntry->ImageHandle,\r | |
536 | sizeof (DriverEntry->ImageHandle)\r | |
537 | );\r | |
538 | }\r | |
28a00297 | 539 | \r |
540 | ReturnStatus = EFI_SUCCESS;\r | |
541 | }\r | |
542 | \r | |
0e4483bc LG |
543 | //\r |
544 | // Now DXE Dispatcher finished one round of dispatch, signal an event group\r | |
545 | // so that SMM Dispatcher get chance to dispatch SMM Drivers which depend\r | |
546 | // on UEFI protocols\r | |
547 | //\r | |
548 | if (!EFI_ERROR (ReturnStatus)) {\r | |
549 | CoreSignalEvent (DxeDispatchEvent);\r | |
550 | }\r | |
551 | \r | |
28a00297 | 552 | //\r |
553 | // Search DriverList for items to place on Scheduled Queue\r | |
554 | //\r | |
555 | ReadyToRun = FALSE;\r | |
556 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
557 | DriverEntry = CR (Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
558 | \r | |
559 | if (DriverEntry->DepexProtocolError){\r | |
560 | //\r | |
561 | // If Section Extraction Protocol did not let the Depex be read before retry the read\r | |
562 | //\r | |
563 | Status = CoreGetDepexSectionAndPreProccess (DriverEntry);\r | |
022c6d45 | 564 | }\r |
28a00297 | 565 | \r |
566 | if (DriverEntry->Dependent) {\r | |
567 | if (CoreIsSchedulable (DriverEntry)) {\r | |
022c6d45 | 568 | CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (DriverEntry);\r |
28a00297 | 569 | ReadyToRun = TRUE;\r |
022c6d45 | 570 | }\r |
6a55eea3 | 571 | } else {\r |
572 | if (DriverEntry->Unrequested) {\r | |
573 | DEBUG ((DEBUG_DISPATCH, "Evaluate DXE DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r | |
574 | DEBUG ((DEBUG_DISPATCH, " SOR = Not Requested\n"));\r | |
575 | DEBUG ((DEBUG_DISPATCH, " RESULT = FALSE\n"));\r | |
576 | }\r | |
28a00297 | 577 | }\r |
578 | }\r | |
579 | } while (ReadyToRun);\r | |
580 | \r | |
202c3279 | 581 | //\r |
582 | // Close DXE dispatch Event\r | |
583 | //\r | |
584 | CoreCloseEvent (DxeDispatchEvent);\r | |
585 | \r | |
28a00297 | 586 | gDispatcherRunning = FALSE;\r |
587 | \r | |
67e9ab84 BD |
588 | PERF_FUNCTION_END ();\r |
589 | \r | |
28a00297 | 590 | return ReturnStatus;\r |
591 | }\r | |
592 | \r | |
28a00297 | 593 | \r |
162ed594 | 594 | /**\r |
595 | Insert InsertedDriverEntry onto the mScheduledQueue. To do this you\r | |
28a00297 | 596 | must add any driver with a before dependency on InsertedDriverEntry first.\r |
597 | You do this by recursively calling this routine. After all the Befores are\r | |
162ed594 | 598 | processed you can add InsertedDriverEntry to the mScheduledQueue.\r |
599 | Then you can add any driver with an After dependency on InsertedDriverEntry\r | |
28a00297 | 600 | by recursively calling this routine.\r |
601 | \r | |
162ed594 | 602 | @param InsertedDriverEntry The driver to insert on the ScheduledLink Queue\r |
28a00297 | 603 | \r |
162ed594 | 604 | **/\r |
162ed594 | 605 | VOID\r |
606 | CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (\r | |
607 | IN EFI_CORE_DRIVER_ENTRY *InsertedDriverEntry\r | |
608 | )\r | |
28a00297 | 609 | {\r |
610 | LIST_ENTRY *Link;\r | |
611 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
612 | \r | |
613 | //\r | |
614 | // Process Before Dependency\r | |
615 | //\r | |
616 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
617 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
6a55eea3 | 618 | if (DriverEntry->Before && DriverEntry->Dependent && DriverEntry != InsertedDriverEntry) {\r |
619 | DEBUG ((DEBUG_DISPATCH, "Evaluate DXE DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r | |
620 | DEBUG ((DEBUG_DISPATCH, " BEFORE FFS(%g) = ", &DriverEntry->BeforeAfterGuid));\r | |
28a00297 | 621 | if (CompareGuid (&InsertedDriverEntry->FileName, &DriverEntry->BeforeAfterGuid)) {\r |
622 | //\r | |
623 | // Recursively process BEFORE\r | |
624 | //\r | |
6a55eea3 | 625 | DEBUG ((DEBUG_DISPATCH, "TRUE\n END\n RESULT = TRUE\n"));\r |
28a00297 | 626 | CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (DriverEntry);\r |
6a55eea3 | 627 | } else {\r |
628 | DEBUG ((DEBUG_DISPATCH, "FALSE\n END\n RESULT = FALSE\n"));\r | |
28a00297 | 629 | }\r |
630 | }\r | |
631 | }\r | |
632 | \r | |
633 | //\r | |
634 | // Convert driver from Dependent to Scheduled state\r | |
635 | //\r | |
636 | CoreAcquireDispatcherLock ();\r | |
637 | \r | |
638 | InsertedDriverEntry->Dependent = FALSE;\r | |
639 | InsertedDriverEntry->Scheduled = TRUE;\r | |
640 | InsertTailList (&mScheduledQueue, &InsertedDriverEntry->ScheduledLink);\r | |
022c6d45 | 641 | \r |
28a00297 | 642 | CoreReleaseDispatcherLock ();\r |
643 | \r | |
644 | //\r | |
645 | // Process After Dependency\r | |
646 | //\r | |
647 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
648 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
6a55eea3 | 649 | if (DriverEntry->After && DriverEntry->Dependent && DriverEntry != InsertedDriverEntry) {\r |
650 | DEBUG ((DEBUG_DISPATCH, "Evaluate DXE DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r | |
651 | DEBUG ((DEBUG_DISPATCH, " AFTER FFS(%g) = ", &DriverEntry->BeforeAfterGuid));\r | |
28a00297 | 652 | if (CompareGuid (&InsertedDriverEntry->FileName, &DriverEntry->BeforeAfterGuid)) {\r |
653 | //\r | |
654 | // Recursively process AFTER\r | |
655 | //\r | |
6a55eea3 | 656 | DEBUG ((DEBUG_DISPATCH, "TRUE\n END\n RESULT = TRUE\n"));\r |
28a00297 | 657 | CoreInsertOnScheduledQueueWhileProcessingBeforeAndAfter (DriverEntry);\r |
6a55eea3 | 658 | } else {\r |
659 | DEBUG ((DEBUG_DISPATCH, "FALSE\n END\n RESULT = FALSE\n"));\r | |
28a00297 | 660 | }\r |
661 | }\r | |
662 | }\r | |
663 | }\r | |
664 | \r | |
28a00297 | 665 | \r |
162ed594 | 666 | /**\r |
28a00297 | 667 | Return TRUE if the Fv has been processed, FALSE if not.\r |
668 | \r | |
022c6d45 | 669 | @param FvHandle The handle of a FV that's being tested\r |
28a00297 | 670 | \r |
022c6d45 | 671 | @retval TRUE Fv protocol on FvHandle has been processed\r |
e94a9ff7 | 672 | @retval FALSE Fv protocol on FvHandle has not yet been processed\r |
28a00297 | 673 | \r |
162ed594 | 674 | **/\r |
162ed594 | 675 | BOOLEAN\r |
676 | FvHasBeenProcessed (\r | |
677 | IN EFI_HANDLE FvHandle\r | |
678 | )\r | |
28a00297 | 679 | {\r |
680 | LIST_ENTRY *Link;\r | |
681 | KNOWN_HANDLE *KnownHandle;\r | |
682 | \r | |
683 | for (Link = mFvHandleList.ForwardLink; Link != &mFvHandleList; Link = Link->ForwardLink) {\r | |
684 | KnownHandle = CR(Link, KNOWN_HANDLE, Link, KNOWN_HANDLE_SIGNATURE);\r | |
685 | if (KnownHandle->Handle == FvHandle) {\r | |
686 | return TRUE;\r | |
687 | }\r | |
688 | }\r | |
689 | return FALSE;\r | |
690 | }\r | |
691 | \r | |
28a00297 | 692 | \r |
162ed594 | 693 | /**\r |
28a00297 | 694 | Remember that Fv protocol on FvHandle has had it's drivers placed on the\r |
d1102dba | 695 | mDiscoveredList. This fucntion adds entries on the mFvHandleList if new\r |
2fc46f86 LG |
696 | entry is different from one in mFvHandleList by checking FvImage Guid.\r |
697 | Items are never removed/freed from the mFvHandleList.\r | |
28a00297 | 698 | \r |
162ed594 | 699 | @param FvHandle The handle of a FV that has been processed\r |
28a00297 | 700 | \r |
2fc46f86 | 701 | @return A point to new added FvHandle entry. If FvHandle with the same FvImage guid\r |
d1102dba | 702 | has been added, NULL will return.\r |
2fc46f86 | 703 | \r |
162ed594 | 704 | **/\r |
d1102dba | 705 | KNOWN_HANDLE *\r |
162ed594 | 706 | FvIsBeingProcesssed (\r |
707 | IN EFI_HANDLE FvHandle\r | |
708 | )\r | |
28a00297 | 709 | {\r |
2fc46f86 LG |
710 | EFI_STATUS Status;\r |
711 | EFI_GUID FvNameGuid;\r | |
712 | BOOLEAN FvNameGuidIsFound;\r | |
713 | UINT32 ExtHeaderOffset;\r | |
714 | EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r | |
715 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
716 | EFI_FV_BLOCK_MAP_ENTRY *BlockMap;\r | |
717 | UINTN LbaOffset;\r | |
718 | UINTN Index;\r | |
719 | EFI_LBA LbaIndex;\r | |
720 | LIST_ENTRY *Link;\r | |
721 | KNOWN_HANDLE *KnownHandle;\r | |
722 | \r | |
ac30bca0 SZ |
723 | FwVolHeader = NULL;\r |
724 | \r | |
2fc46f86 LG |
725 | //\r |
726 | // Get the FirmwareVolumeBlock protocol on that handle\r | |
727 | //\r | |
728 | FvNameGuidIsFound = FALSE;\r | |
729 | Status = CoreHandleProtocol (FvHandle, &gEfiFirmwareVolumeBlockProtocolGuid, (VOID **)&Fvb);\r | |
730 | if (!EFI_ERROR (Status)) {\r | |
731 | //\r | |
732 | // Get the full FV header based on FVB protocol.\r | |
733 | //\r | |
bdc9d5a5 | 734 | ASSERT (Fvb != NULL);\r |
2fc46f86 | 735 | Status = GetFwVolHeader (Fvb, &FwVolHeader);\r |
bdc9d5a5 LG |
736 | if (!EFI_ERROR (Status)) {\r |
737 | ASSERT (FwVolHeader != NULL);\r | |
738 | if (VerifyFvHeaderChecksum (FwVolHeader) && FwVolHeader->ExtHeaderOffset != 0) {\r | |
739 | ExtHeaderOffset = (UINT32) FwVolHeader->ExtHeaderOffset;\r | |
740 | BlockMap = FwVolHeader->BlockMap;\r | |
741 | LbaIndex = 0;\r | |
742 | LbaOffset = 0;\r | |
743 | //\r | |
744 | // Find LbaIndex and LbaOffset for FV extension header based on BlockMap.\r | |
745 | //\r | |
746 | while ((BlockMap->NumBlocks != 0) || (BlockMap->Length != 0)) {\r | |
747 | for (Index = 0; Index < BlockMap->NumBlocks && ExtHeaderOffset >= BlockMap->Length; Index ++) {\r | |
748 | ExtHeaderOffset -= BlockMap->Length;\r | |
749 | LbaIndex ++;\r | |
750 | }\r | |
751 | //\r | |
752 | // Check whether FvExtHeader is crossing the multi block range.\r | |
753 | //\r | |
754 | if (Index < BlockMap->NumBlocks) {\r | |
755 | LbaOffset = ExtHeaderOffset;\r | |
756 | break;\r | |
757 | }\r | |
758 | BlockMap++;\r | |
2fc46f86 LG |
759 | }\r |
760 | //\r | |
bdc9d5a5 | 761 | // Read FvNameGuid from FV extension header.\r |
2fc46f86 | 762 | //\r |
bdc9d5a5 LG |
763 | Status = ReadFvbData (Fvb, &LbaIndex, &LbaOffset, sizeof (FvNameGuid), (UINT8 *) &FvNameGuid);\r |
764 | if (!EFI_ERROR (Status)) {\r | |
765 | FvNameGuidIsFound = TRUE;\r | |
2fc46f86 | 766 | }\r |
2fc46f86 | 767 | }\r |
bdc9d5a5 | 768 | CoreFreePool (FwVolHeader);\r |
2fc46f86 | 769 | }\r |
2fc46f86 LG |
770 | }\r |
771 | \r | |
772 | if (FvNameGuidIsFound) {\r | |
773 | //\r | |
774 | // Check whether the FV image with the found FvNameGuid has been processed.\r | |
775 | //\r | |
776 | for (Link = mFvHandleList.ForwardLink; Link != &mFvHandleList; Link = Link->ForwardLink) {\r | |
777 | KnownHandle = CR(Link, KNOWN_HANDLE, Link, KNOWN_HANDLE_SIGNATURE);\r | |
778 | if (CompareGuid (&FvNameGuid, &KnownHandle->FvNameGuid)) {\r | |
e0617988 | 779 | DEBUG ((EFI_D_ERROR, "FvImage on FvHandle %p and %p has the same FvNameGuid %g.\n", FvHandle, KnownHandle->Handle, &FvNameGuid));\r |
2fc46f86 LG |
780 | return NULL;\r |
781 | }\r | |
782 | }\r | |
783 | }\r | |
28a00297 | 784 | \r |
2fc46f86 | 785 | KnownHandle = AllocateZeroPool (sizeof (KNOWN_HANDLE));\r |
28a00297 | 786 | ASSERT (KnownHandle != NULL);\r |
787 | \r | |
788 | KnownHandle->Signature = KNOWN_HANDLE_SIGNATURE;\r | |
789 | KnownHandle->Handle = FvHandle;\r | |
2fc46f86 LG |
790 | if (FvNameGuidIsFound) {\r |
791 | CopyGuid (&KnownHandle->FvNameGuid, &FvNameGuid);\r | |
792 | }\r | |
28a00297 | 793 | InsertTailList (&mFvHandleList, &KnownHandle->Link);\r |
2fc46f86 | 794 | return KnownHandle;\r |
28a00297 | 795 | }\r |
796 | \r | |
797 | \r | |
798 | \r | |
162ed594 | 799 | \r |
800 | /**\r | |
801 | Convert FvHandle and DriverName into an EFI device path\r | |
802 | \r | |
022c6d45 | 803 | @param Fv Fv protocol, needed to read Depex info out of\r |
804 | FLASH.\r | |
805 | @param FvHandle Handle for Fv, needed in the\r | |
806 | EFI_CORE_DRIVER_ENTRY so that the PE image can be\r | |
807 | read out of the FV at a later time.\r | |
808 | @param DriverName Name of driver to add to mDiscoveredList.\r | |
162ed594 | 809 | \r |
810 | @return Pointer to device path constructed from FvHandle and DriverName\r | |
811 | \r | |
812 | **/\r | |
28a00297 | 813 | EFI_DEVICE_PATH_PROTOCOL *\r |
814 | CoreFvToDevicePath (\r | |
0c2b5da8 | 815 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r |
28a00297 | 816 | IN EFI_HANDLE FvHandle,\r |
817 | IN EFI_GUID *DriverName\r | |
818 | )\r | |
28a00297 | 819 | {\r |
820 | EFI_STATUS Status;\r | |
821 | EFI_DEVICE_PATH_PROTOCOL *FvDevicePath;\r | |
822 | EFI_DEVICE_PATH_PROTOCOL *FileNameDevicePath;\r | |
823 | \r | |
824 | //\r | |
825 | // Remember the device path of the FV\r | |
826 | //\r | |
827 | Status = CoreHandleProtocol (FvHandle, &gEfiDevicePathProtocolGuid, (VOID **)&FvDevicePath);\r | |
828 | if (EFI_ERROR (Status)) {\r | |
829 | FileNameDevicePath = NULL;\r | |
830 | } else {\r | |
831 | //\r | |
832 | // Build a device path to the file in the FV to pass into gBS->LoadImage\r | |
833 | //\r | |
834 | EfiInitializeFwVolDevicepathNode (&mFvDevicePath.File, DriverName);\r | |
1232b214 | 835 | SetDevicePathEndNode (&mFvDevicePath.End);\r |
28a00297 | 836 | \r |
9c4ac31c | 837 | FileNameDevicePath = AppendDevicePath (\r |
022c6d45 | 838 | FvDevicePath,\r |
28a00297 | 839 | (EFI_DEVICE_PATH_PROTOCOL *)&mFvDevicePath\r |
840 | );\r | |
841 | }\r | |
842 | \r | |
843 | return FileNameDevicePath;\r | |
844 | }\r | |
845 | \r | |
846 | \r | |
847 | \r | |
162ed594 | 848 | /**\r |
849 | Add an entry to the mDiscoveredList. Allocate memory to store the DriverEntry,\r | |
28a00297 | 850 | and initilize any state variables. Read the Depex from the FV and store it\r |
851 | in DriverEntry. Pre-process the Depex to set the SOR, Before and After state.\r | |
852 | The Discovered list is never free'ed and contains booleans that represent the\r | |
853 | other possible DXE driver states.\r | |
854 | \r | |
022c6d45 | 855 | @param Fv Fv protocol, needed to read Depex info out of\r |
856 | FLASH.\r | |
857 | @param FvHandle Handle for Fv, needed in the\r | |
858 | EFI_CORE_DRIVER_ENTRY so that the PE image can be\r | |
859 | read out of the FV at a later time.\r | |
860 | @param DriverName Name of driver to add to mDiscoveredList.\r | |
d3592549 | 861 | @param Type Fv File Type of file to add to mDiscoveredList.\r |
28a00297 | 862 | \r |
022c6d45 | 863 | @retval EFI_SUCCESS If driver was added to the mDiscoveredList.\r |
864 | @retval EFI_ALREADY_STARTED The driver has already been started. Only one\r | |
865 | DriverName may be active in the system at any one\r | |
162ed594 | 866 | time.\r |
28a00297 | 867 | \r |
162ed594 | 868 | **/\r |
869 | EFI_STATUS\r | |
870 | CoreAddToDriverList (\r | |
871 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r | |
872 | IN EFI_HANDLE FvHandle,\r | |
d3592549 LG |
873 | IN EFI_GUID *DriverName,\r |
874 | IN EFI_FV_FILETYPE Type\r | |
162ed594 | 875 | )\r |
28a00297 | 876 | {\r |
877 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
878 | \r | |
022c6d45 | 879 | \r |
28a00297 | 880 | //\r |
022c6d45 | 881 | // Create the Driver Entry for the list. ZeroPool initializes lots of variables to\r |
28a00297 | 882 | // NULL or FALSE.\r |
883 | //\r | |
9c4ac31c | 884 | DriverEntry = AllocateZeroPool (sizeof (EFI_CORE_DRIVER_ENTRY));\r |
28a00297 | 885 | ASSERT (DriverEntry != NULL);\r |
d3592549 LG |
886 | if (Type == EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) {\r |
887 | DriverEntry->IsFvImage = TRUE;\r | |
888 | }\r | |
28a00297 | 889 | \r |
890 | DriverEntry->Signature = EFI_CORE_DRIVER_ENTRY_SIGNATURE;\r | |
e94a9ff7 | 891 | CopyGuid (&DriverEntry->FileName, DriverName);\r |
28a00297 | 892 | DriverEntry->FvHandle = FvHandle;\r |
893 | DriverEntry->Fv = Fv;\r | |
894 | DriverEntry->FvFileDevicePath = CoreFvToDevicePath (Fv, FvHandle, DriverName);\r | |
895 | \r | |
896 | CoreGetDepexSectionAndPreProccess (DriverEntry);\r | |
022c6d45 | 897 | \r |
28a00297 | 898 | CoreAcquireDispatcherLock ();\r |
022c6d45 | 899 | \r |
28a00297 | 900 | InsertTailList (&mDiscoveredList, &DriverEntry->Link);\r |
901 | \r | |
902 | CoreReleaseDispatcherLock ();\r | |
903 | \r | |
904 | return EFI_SUCCESS;\r | |
905 | }\r | |
906 | \r | |
bbc0f1bb | 907 | \r |
162ed594 | 908 | /**\r |
bbc0f1bb | 909 | Check if a FV Image type file (EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) is\r |
910 | described by a EFI_HOB_FIRMWARE_VOLUME2 Hob.\r | |
911 | \r | |
2fc46f86 | 912 | @param FvNameGuid The FV image guid specified.\r |
022c6d45 | 913 | @param DriverName The driver guid specified.\r |
bbc0f1bb | 914 | \r |
022c6d45 | 915 | @retval TRUE This file is found in a EFI_HOB_FIRMWARE_VOLUME2\r |
916 | Hob.\r | |
162ed594 | 917 | @retval FALSE Not found.\r |
bbc0f1bb | 918 | \r |
162ed594 | 919 | **/\r |
162ed594 | 920 | BOOLEAN\r |
921 | FvFoundInHobFv2 (\r | |
2fc46f86 | 922 | IN CONST EFI_GUID *FvNameGuid,\r |
162ed594 | 923 | IN CONST EFI_GUID *DriverName\r |
924 | )\r | |
bbc0f1bb | 925 | {\r |
926 | EFI_PEI_HOB_POINTERS HobFv2;\r | |
022c6d45 | 927 | \r |
bbc0f1bb | 928 | HobFv2.Raw = GetHobList ();\r |
022c6d45 | 929 | \r |
bbc0f1bb | 930 | while ((HobFv2.Raw = GetNextHob (EFI_HOB_TYPE_FV2, HobFv2.Raw)) != NULL) {\r |
2fc46f86 LG |
931 | //\r |
932 | // Compare parent FvNameGuid and FileGuid both.\r | |
933 | //\r | |
934 | if (CompareGuid (DriverName, &HobFv2.FirmwareVolume2->FileName) &&\r | |
935 | CompareGuid (FvNameGuid, &HobFv2.FirmwareVolume2->FvName)) {\r | |
b0d803fe | 936 | return TRUE;\r |
bbc0f1bb | 937 | }\r |
938 | HobFv2.Raw = GET_NEXT_HOB (HobFv2);\r | |
939 | }\r | |
940 | \r | |
941 | return FALSE;\r | |
942 | }\r | |
28a00297 | 943 | \r |
a82e52b3 SZ |
944 | /**\r |
945 | Find USED_SIZE FV_EXT_TYPE entry in FV extension header and get the FV used size.\r | |
946 | \r | |
947 | @param[in] FvHeader Pointer to FV header.\r | |
948 | @param[out] FvUsedSize Pointer to FV used size returned,\r | |
949 | only valid if USED_SIZE FV_EXT_TYPE entry is found.\r | |
950 | @param[out] EraseByte Pointer to erase byte returned,\r | |
951 | only valid if USED_SIZE FV_EXT_TYPE entry is found.\r | |
952 | \r | |
953 | @retval TRUE USED_SIZE FV_EXT_TYPE entry is found,\r | |
954 | FV used size and erase byte are returned.\r | |
955 | @retval FALSE No USED_SIZE FV_EXT_TYPE entry found.\r | |
956 | \r | |
957 | **/\r | |
958 | BOOLEAN\r | |
959 | GetFvUsedSize (\r | |
960 | IN EFI_FIRMWARE_VOLUME_HEADER *FvHeader,\r | |
961 | OUT UINT32 *FvUsedSize,\r | |
962 | OUT UINT8 *EraseByte\r | |
963 | )\r | |
964 | {\r | |
965 | UINT16 ExtHeaderOffset;\r | |
966 | EFI_FIRMWARE_VOLUME_EXT_HEADER *ExtHeader;\r | |
967 | EFI_FIRMWARE_VOLUME_EXT_ENTRY *ExtEntryList;\r | |
968 | EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE *ExtEntryUsedSize;\r | |
969 | \r | |
970 | ExtHeaderOffset = ReadUnaligned16 (&FvHeader->ExtHeaderOffset);\r | |
971 | if (ExtHeaderOffset != 0) {\r | |
972 | ExtHeader = (EFI_FIRMWARE_VOLUME_EXT_HEADER *) ((UINT8 *) FvHeader + ExtHeaderOffset);\r | |
973 | ExtEntryList = (EFI_FIRMWARE_VOLUME_EXT_ENTRY *) (ExtHeader + 1);\r | |
974 | while ((UINTN) ExtEntryList < ((UINTN) ExtHeader + ReadUnaligned32 (&ExtHeader->ExtHeaderSize))) {\r | |
975 | if (ReadUnaligned16 (&ExtEntryList->ExtEntryType) == EFI_FV_EXT_TYPE_USED_SIZE_TYPE) {\r | |
976 | //\r | |
977 | // USED_SIZE FV_EXT_TYPE entry is found.\r | |
978 | //\r | |
979 | ExtEntryUsedSize = (EFI_FIRMWARE_VOLUME_EXT_ENTRY_USED_SIZE_TYPE *) ExtEntryList;\r | |
980 | *FvUsedSize = ReadUnaligned32 (&ExtEntryUsedSize->UsedSize);\r | |
981 | if ((ReadUnaligned32 (&FvHeader->Attributes) & EFI_FVB2_ERASE_POLARITY) != 0) {\r | |
982 | *EraseByte = 0xFF;\r | |
983 | } else {\r | |
984 | *EraseByte = 0;\r | |
985 | }\r | |
986 | DEBUG ((\r | |
987 | DEBUG_INFO,\r | |
988 | "FV at 0x%x has 0x%x used size, and erase byte is 0x%02x\n",\r | |
989 | FvHeader,\r | |
990 | *FvUsedSize,\r | |
991 | *EraseByte\r | |
992 | ));\r | |
993 | return TRUE;\r | |
994 | }\r | |
995 | ExtEntryList = (EFI_FIRMWARE_VOLUME_EXT_ENTRY *)\r | |
996 | ((UINT8 *) ExtEntryList + ReadUnaligned16 (&ExtEntryList->ExtEntrySize));\r | |
997 | }\r | |
998 | }\r | |
28a00297 | 999 | \r |
a82e52b3 SZ |
1000 | //\r |
1001 | // No USED_SIZE FV_EXT_TYPE entry found.\r | |
1002 | //\r | |
1003 | return FALSE;\r | |
1004 | }\r | |
162ed594 | 1005 | \r |
1006 | /**\r | |
1007 | Get the driver from the FV through driver name, and produce a FVB protocol on FvHandle.\r | |
1008 | \r | |
022c6d45 | 1009 | @param Fv The FIRMWARE_VOLUME protocol installed on the FV.\r |
1010 | @param FvHandle The handle which FVB protocol installed on.\r | |
1011 | @param DriverName The driver guid specified.\r | |
162ed594 | 1012 | \r |
022c6d45 | 1013 | @retval EFI_OUT_OF_RESOURCES No enough memory or other resource.\r |
1014 | @retval EFI_VOLUME_CORRUPTED Corrupted volume.\r | |
162ed594 | 1015 | @retval EFI_SUCCESS Function successfully returned.\r |
1016 | \r | |
1017 | **/\r | |
022c6d45 | 1018 | EFI_STATUS\r |
28a00297 | 1019 | CoreProcessFvImageFile (\r |
0c2b5da8 | 1020 | IN EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv,\r |
28a00297 | 1021 | IN EFI_HANDLE FvHandle,\r |
1022 | IN EFI_GUID *DriverName\r | |
1023 | )\r | |
28a00297 | 1024 | {\r |
1025 | EFI_STATUS Status;\r | |
1026 | EFI_SECTION_TYPE SectionType;\r | |
1027 | UINT32 AuthenticationStatus;\r | |
1028 | VOID *Buffer;\r | |
38837959 | 1029 | VOID *AlignedBuffer;\r |
28a00297 | 1030 | UINTN BufferSize;\r |
38837959 | 1031 | EFI_FIRMWARE_VOLUME_HEADER *FvHeader;\r |
022c6d45 | 1032 | UINT32 FvAlignment;\r |
022ff6bb | 1033 | EFI_DEVICE_PATH_PROTOCOL *FvFileDevicePath;\r |
a82e52b3 SZ |
1034 | UINT32 FvUsedSize;\r |
1035 | UINT8 EraseByte;\r | |
28a00297 | 1036 | \r |
1037 | //\r | |
1038 | // Read the first (and only the first) firmware volume section\r | |
1039 | //\r | |
e94a9ff7 | 1040 | SectionType = EFI_SECTION_FIRMWARE_VOLUME_IMAGE;\r |
1041 | FvHeader = NULL;\r | |
1042 | FvAlignment = 0;\r | |
1043 | Buffer = NULL;\r | |
1044 | BufferSize = 0;\r | |
38837959 | 1045 | AlignedBuffer = NULL;\r |
28a00297 | 1046 | Status = Fv->ReadSection (\r |
022c6d45 | 1047 | Fv,\r |
1048 | DriverName,\r | |
1049 | SectionType,\r | |
1050 | 0,\r | |
1051 | &Buffer,\r | |
e94a9ff7 | 1052 | &BufferSize,\r |
1053 | &AuthenticationStatus\r | |
1054 | );\r | |
28a00297 | 1055 | if (!EFI_ERROR (Status)) {\r |
022ff6bb SZ |
1056 | //\r |
1057 | // Evaluate the authentication status of the Firmware Volume through\r | |
1058 | // Security Architectural Protocol\r | |
1059 | //\r | |
1060 | if (gSecurity != NULL) {\r | |
1061 | FvFileDevicePath = CoreFvToDevicePath (Fv, FvHandle, DriverName);\r | |
1062 | Status = gSecurity->FileAuthenticationState (\r | |
1063 | gSecurity,\r | |
1064 | AuthenticationStatus,\r | |
1065 | FvFileDevicePath\r | |
1066 | );\r | |
1067 | if (FvFileDevicePath != NULL) {\r | |
1068 | FreePool (FvFileDevicePath);\r | |
1069 | }\r | |
1070 | \r | |
1071 | if (Status != EFI_SUCCESS) {\r | |
1072 | //\r | |
1073 | // Security check failed. The firmware volume should not be used for any purpose.\r | |
1074 | //\r | |
1075 | if (Buffer != NULL) {\r | |
1076 | FreePool (Buffer);\r | |
1077 | }\r | |
1078 | return Status;\r | |
1079 | }\r | |
1080 | }\r | |
1081 | \r | |
28a00297 | 1082 | //\r |
38837959 | 1083 | // FvImage should be at its required alignment.\r |
28a00297 | 1084 | //\r |
38837959 | 1085 | FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) Buffer;\r |
6d9a0f28 | 1086 | //\r |
3837e91c SZ |
1087 | // If EFI_FVB2_WEAK_ALIGNMENT is set in the volume header then the first byte of the volume\r |
1088 | // can be aligned on any power-of-two boundary. A weakly aligned volume can not be moved from\r | |
1089 | // its initial linked location and maintain its alignment.\r | |
6d9a0f28 | 1090 | //\r |
5d0b4eb4 | 1091 | if ((ReadUnaligned32 (&FvHeader->Attributes) & EFI_FVB2_WEAK_ALIGNMENT) != EFI_FVB2_WEAK_ALIGNMENT) {\r |
38837959 | 1092 | //\r |
3837e91c | 1093 | // Get FvHeader alignment\r |
38837959 | 1094 | //\r |
5d0b4eb4 | 1095 | FvAlignment = 1 << ((ReadUnaligned32 (&FvHeader->Attributes) & EFI_FVB2_ALIGNMENT) >> 16);\r |
38837959 | 1096 | //\r |
3837e91c | 1097 | // FvAlignment must be greater than or equal to 8 bytes of the minimum FFS alignment value.\r |
38837959 | 1098 | //\r |
3837e91c SZ |
1099 | if (FvAlignment < 8) {\r |
1100 | FvAlignment = 8;\r | |
1101 | }\r | |
5d0b4eb4 | 1102 | \r |
a82e52b3 SZ |
1103 | DEBUG ((\r |
1104 | DEBUG_INFO,\r | |
1105 | "%a() FV at 0x%x, FvAlignment required is 0x%x\n",\r | |
1106 | __FUNCTION__,\r | |
1107 | FvHeader,\r | |
1108 | FvAlignment\r | |
1109 | ));\r | |
1110 | \r | |
3837e91c | 1111 | //\r |
5d0b4eb4 | 1112 | // Check FvImage alignment.\r |
3837e91c | 1113 | //\r |
5d0b4eb4 | 1114 | if ((UINTN) FvHeader % FvAlignment != 0) {\r |
3837e91c | 1115 | //\r |
5d0b4eb4 | 1116 | // Allocate the aligned buffer for the FvImage.\r |
3837e91c | 1117 | //\r |
5d0b4eb4 SZ |
1118 | AlignedBuffer = AllocateAlignedPages (EFI_SIZE_TO_PAGES (BufferSize), (UINTN) FvAlignment);\r |
1119 | if (AlignedBuffer == NULL) {\r | |
1120 | FreePool (Buffer);\r | |
1121 | return EFI_OUT_OF_RESOURCES;\r | |
1122 | } else {\r | |
1123 | //\r | |
1124 | // Move FvImage into the aligned buffer and release the original buffer.\r | |
1125 | //\r | |
a82e52b3 SZ |
1126 | if (GetFvUsedSize (FvHeader, &FvUsedSize, &EraseByte)) {\r |
1127 | //\r | |
1128 | // Copy the used bytes and fill the rest with the erase value.\r | |
1129 | //\r | |
1130 | CopyMem (AlignedBuffer, FvHeader, (UINTN) FvUsedSize);\r | |
1131 | SetMem (\r | |
1132 | (UINT8 *) AlignedBuffer + FvUsedSize,\r | |
1133 | (UINTN) (BufferSize - FvUsedSize),\r | |
1134 | EraseByte\r | |
1135 | );\r | |
1136 | } else {\r | |
1137 | CopyMem (AlignedBuffer, Buffer, BufferSize);\r | |
1138 | }\r | |
5d0b4eb4 SZ |
1139 | FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) AlignedBuffer;\r |
1140 | CoreFreePool (Buffer);\r | |
1141 | Buffer = NULL;\r | |
1142 | }\r | |
3837e91c | 1143 | }\r |
38837959 | 1144 | }\r |
3837e91c SZ |
1145 | //\r |
1146 | // Produce a FVB protocol for the file\r | |
1147 | //\r | |
1148 | Status = ProduceFVBProtocolOnBuffer (\r | |
1149 | (EFI_PHYSICAL_ADDRESS) (UINTN) FvHeader,\r | |
1150 | (UINT64)BufferSize,\r | |
1151 | FvHandle,\r | |
1152 | AuthenticationStatus,\r | |
1153 | NULL\r | |
1154 | );\r | |
28a00297 | 1155 | }\r |
1156 | \r | |
022c6d45 | 1157 | if (EFI_ERROR (Status)) {\r |
38837959 LG |
1158 | //\r |
1159 | // ReadSection or Produce FVB failed, Free data buffer\r | |
1160 | //\r | |
1161 | if (Buffer != NULL) {\r | |
9c4ac31c | 1162 | FreePool (Buffer);\r |
38837959 | 1163 | }\r |
022c6d45 | 1164 | \r |
38837959 | 1165 | if (AlignedBuffer != NULL) {\r |
b2c5e194 | 1166 | FreeAlignedPages (AlignedBuffer, EFI_SIZE_TO_PAGES (BufferSize));\r |
38837959 | 1167 | }\r |
28a00297 | 1168 | }\r |
1169 | \r | |
1170 | return Status;\r | |
1171 | }\r | |
1172 | \r | |
28a00297 | 1173 | \r |
162ed594 | 1174 | /**\r |
1175 | Event notification that is fired every time a FV dispatch protocol is added.\r | |
28a00297 | 1176 | More than one protocol may have been added when this event is fired, so you\r |
1177 | must loop on CoreLocateHandle () to see how many protocols were added and\r | |
1178 | do the following to each FV:\r | |
162ed594 | 1179 | If the Fv has already been processed, skip it. If the Fv has not been\r |
28a00297 | 1180 | processed then mark it as being processed, as we are about to process it.\r |
162ed594 | 1181 | Read the Fv and add any driver in the Fv to the mDiscoveredList.The\r |
28a00297 | 1182 | mDiscoveredList is never free'ed and contains variables that define\r |
162ed594 | 1183 | the other states the DXE driver transitions to..\r |
28a00297 | 1184 | While you are at it read the A Priori file into memory.\r |
1185 | Place drivers in the A Priori list onto the mScheduledQueue.\r | |
1186 | \r | |
022c6d45 | 1187 | @param Event The Event that is being processed, not used.\r |
162ed594 | 1188 | @param Context Event Context, not used.\r |
28a00297 | 1189 | \r |
162ed594 | 1190 | **/\r |
162ed594 | 1191 | VOID\r |
1192 | EFIAPI\r | |
1193 | CoreFwVolEventProtocolNotify (\r | |
1194 | IN EFI_EVENT Event,\r | |
1195 | IN VOID *Context\r | |
1196 | )\r | |
28a00297 | 1197 | {\r |
1198 | EFI_STATUS Status;\r | |
1199 | EFI_STATUS GetNextFileStatus;\r | |
0c2b5da8 | 1200 | EFI_FIRMWARE_VOLUME2_PROTOCOL *Fv;\r |
28a00297 | 1201 | EFI_DEVICE_PATH_PROTOCOL *FvDevicePath;\r |
1202 | EFI_HANDLE FvHandle;\r | |
1203 | UINTN BufferSize;\r | |
1204 | EFI_GUID NameGuid;\r | |
1205 | UINTN Key;\r | |
1206 | EFI_FV_FILETYPE Type;\r | |
1207 | EFI_FV_FILE_ATTRIBUTES Attributes;\r | |
1208 | UINTN Size;\r | |
1209 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
1210 | EFI_GUID *AprioriFile;\r | |
1211 | UINTN AprioriEntryCount;\r | |
1212 | UINTN Index;\r | |
1213 | LIST_ENTRY *Link;\r | |
1214 | UINT32 AuthenticationStatus;\r | |
1215 | UINTN SizeOfBuffer;\r | |
d3592549 | 1216 | VOID *DepexBuffer;\r |
2fc46f86 | 1217 | KNOWN_HANDLE *KnownHandle;\r |
28a00297 | 1218 | \r |
4e1005ec ED |
1219 | FvHandle = NULL;\r |
1220 | \r | |
28a00297 | 1221 | while (TRUE) {\r |
1222 | BufferSize = sizeof (EFI_HANDLE);\r | |
1223 | Status = CoreLocateHandle (\r | |
e94a9ff7 | 1224 | ByRegisterNotify,\r |
1225 | NULL,\r | |
1226 | mFwVolEventRegistration,\r | |
1227 | &BufferSize,\r | |
1228 | &FvHandle\r | |
1229 | );\r | |
28a00297 | 1230 | if (EFI_ERROR (Status)) {\r |
1231 | //\r | |
1232 | // If no more notification events exit\r | |
1233 | //\r | |
1234 | return;\r | |
1235 | }\r | |
1236 | \r | |
1237 | if (FvHasBeenProcessed (FvHandle)) {\r | |
1238 | //\r | |
1239 | // This Fv has already been processed so lets skip it!\r | |
1240 | //\r | |
1241 | continue;\r | |
1242 | }\r | |
1243 | \r | |
28a00297 | 1244 | //\r |
1245 | // Since we are about to process this Fv mark it as processed.\r | |
1246 | //\r | |
2fc46f86 LG |
1247 | KnownHandle = FvIsBeingProcesssed (FvHandle);\r |
1248 | if (KnownHandle == NULL) {\r | |
1249 | //\r | |
d1102dba | 1250 | // The FV with the same FV name guid has already been processed.\r |
2fc46f86 LG |
1251 | // So lets skip it!\r |
1252 | //\r | |
1253 | continue;\r | |
1254 | }\r | |
28a00297 | 1255 | \r |
0c2b5da8 | 1256 | Status = CoreHandleProtocol (FvHandle, &gEfiFirmwareVolume2ProtocolGuid, (VOID **)&Fv);\r |
d2fbaaab | 1257 | if (EFI_ERROR (Status) || Fv == NULL) {\r |
28a00297 | 1258 | //\r |
cd539d48 | 1259 | // FvHandle must have Firmware Volume2 protocol thus we should never get here.\r |
28a00297 | 1260 | //\r |
1261 | ASSERT (FALSE);\r | |
1262 | continue;\r | |
1263 | }\r | |
022c6d45 | 1264 | \r |
28a00297 | 1265 | Status = CoreHandleProtocol (FvHandle, &gEfiDevicePathProtocolGuid, (VOID **)&FvDevicePath);\r |
1266 | if (EFI_ERROR (Status)) {\r | |
1267 | //\r | |
1268 | // The Firmware volume doesn't have device path, can't be dispatched.\r | |
1269 | //\r | |
1270 | continue;\r | |
1271 | }\r | |
022c6d45 | 1272 | \r |
28a00297 | 1273 | //\r |
022c6d45 | 1274 | // Discover Drivers in FV and add them to the Discovered Driver List.\r |
1275 | // Process EFI_FV_FILETYPE_DRIVER type and then EFI_FV_FILETYPE_COMBINED_PEIM_DRIVER\r | |
28a00297 | 1276 | // EFI_FV_FILETYPE_DXE_CORE is processed to produce a Loaded Image protocol for the core\r |
1277 | // EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE is processed to create a Fvb\r | |
1278 | //\r | |
e94a9ff7 | 1279 | for (Index = 0; Index < sizeof (mDxeFileTypes) / sizeof (EFI_FV_FILETYPE); Index++) {\r |
28a00297 | 1280 | //\r |
1281 | // Initialize the search key\r | |
1282 | //\r | |
1283 | Key = 0;\r | |
1284 | do {\r | |
1285 | Type = mDxeFileTypes[Index];\r | |
1286 | GetNextFileStatus = Fv->GetNextFile (\r | |
022c6d45 | 1287 | Fv,\r |
28a00297 | 1288 | &Key,\r |
022c6d45 | 1289 | &Type,\r |
1290 | &NameGuid,\r | |
1291 | &Attributes,\r | |
28a00297 | 1292 | &Size\r |
1293 | );\r | |
1294 | if (!EFI_ERROR (GetNextFileStatus)) {\r | |
1295 | if (Type == EFI_FV_FILETYPE_DXE_CORE) {\r | |
1296 | //\r | |
1297 | // If this is the DXE core fill in it's DevicePath & DeviceHandle\r | |
1298 | //\r | |
1299 | if (gDxeCoreLoadedImage->FilePath == NULL) {\r | |
1300 | if (CompareGuid (&NameGuid, gDxeCoreFileName)) {\r | |
1301 | //\r | |
1302 | // Maybe One specail Fv cantains only one DXE_CORE module, so its device path must\r | |
1303 | // be initialized completely.\r | |
1304 | //\r | |
1305 | EfiInitializeFwVolDevicepathNode (&mFvDevicePath.File, &NameGuid);\r | |
1232b214 | 1306 | SetDevicePathEndNode (&mFvDevicePath.End);\r |
28a00297 | 1307 | \r |
9c4ac31c | 1308 | gDxeCoreLoadedImage->FilePath = DuplicateDevicePath (\r |
28a00297 | 1309 | (EFI_DEVICE_PATH_PROTOCOL *)&mFvDevicePath\r |
1310 | );\r | |
1311 | gDxeCoreLoadedImage->DeviceHandle = FvHandle;\r | |
1312 | }\r | |
1313 | }\r | |
1314 | } else if (Type == EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE) {\r | |
bbc0f1bb | 1315 | //\r |
022c6d45 | 1316 | // Check if this EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE file has already\r |
bbc0f1bb | 1317 | // been extracted.\r |
1318 | //\r | |
2fc46f86 | 1319 | if (FvFoundInHobFv2 (&KnownHandle->FvNameGuid, &NameGuid)) {\r |
bbc0f1bb | 1320 | continue;\r |
1321 | }\r | |
d3592549 | 1322 | \r |
28a00297 | 1323 | //\r |
d3592549 | 1324 | // Check if this EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE file has SMM depex section.\r |
28a00297 | 1325 | //\r |
d3592549 LG |
1326 | DepexBuffer = NULL;\r |
1327 | SizeOfBuffer = 0;\r | |
1328 | Status = Fv->ReadSection (\r | |
1329 | Fv,\r | |
1330 | &NameGuid,\r | |
1331 | EFI_SECTION_SMM_DEPEX,\r | |
1332 | 0,\r | |
1333 | &DepexBuffer,\r | |
1334 | &SizeOfBuffer,\r | |
1335 | &AuthenticationStatus\r | |
1336 | );\r | |
1337 | if (!EFI_ERROR (Status)) {\r | |
1338 | //\r | |
c74a25f0 | 1339 | // If SMM depex section is found, this FV image is invalid to be supported.\r |
d1102dba | 1340 | // ASSERT FALSE to report this FV image.\r |
d3592549 LG |
1341 | //\r |
1342 | FreePool (DepexBuffer);\r | |
c74a25f0 | 1343 | ASSERT (FALSE);\r |
d3592549 LG |
1344 | }\r |
1345 | \r | |
1346 | //\r | |
1347 | // Check if this EFI_FV_FILETYPE_FIRMWARE_VOLUME_IMAGE file has DXE depex section.\r | |
1348 | //\r | |
1349 | DepexBuffer = NULL;\r | |
1350 | SizeOfBuffer = 0;\r | |
1351 | Status = Fv->ReadSection (\r | |
1352 | Fv,\r | |
1353 | &NameGuid,\r | |
1354 | EFI_SECTION_DXE_DEPEX,\r | |
1355 | 0,\r | |
1356 | &DepexBuffer,\r | |
1357 | &SizeOfBuffer,\r | |
1358 | &AuthenticationStatus\r | |
1359 | );\r | |
1360 | if (EFI_ERROR (Status)) {\r | |
1361 | //\r | |
d1102dba | 1362 | // If no depex section, produce a firmware volume block protocol for it so it gets dispatched from.\r |
d3592549 LG |
1363 | //\r |
1364 | CoreProcessFvImageFile (Fv, FvHandle, &NameGuid);\r | |
1365 | } else {\r | |
1366 | //\r | |
1367 | // If depex section is found, this FV image will be dispatched until its depex is evaluated to TRUE.\r | |
1368 | //\r | |
1369 | FreePool (DepexBuffer);\r | |
1370 | CoreAddToDriverList (Fv, FvHandle, &NameGuid, Type);\r | |
1371 | }\r | |
28a00297 | 1372 | } else {\r |
1373 | //\r | |
1374 | // Transition driver from Undiscovered to Discovered state\r | |
1375 | //\r | |
d3592549 | 1376 | CoreAddToDriverList (Fv, FvHandle, &NameGuid, Type);\r |
28a00297 | 1377 | }\r |
1378 | }\r | |
1379 | } while (!EFI_ERROR (GetNextFileStatus));\r | |
1380 | }\r | |
022c6d45 | 1381 | \r |
28a00297 | 1382 | //\r |
1383 | // Read the array of GUIDs from the Apriori file if it is present in the firmware volume\r | |
1384 | //\r | |
1385 | AprioriFile = NULL;\r | |
1386 | Status = Fv->ReadSection (\r | |
1387 | Fv,\r | |
1388 | &gAprioriGuid,\r | |
1389 | EFI_SECTION_RAW,\r | |
1390 | 0,\r | |
1391 | (VOID **)&AprioriFile,\r | |
1392 | &SizeOfBuffer,\r | |
1393 | &AuthenticationStatus\r | |
1394 | );\r | |
1395 | if (!EFI_ERROR (Status)) {\r | |
1396 | AprioriEntryCount = SizeOfBuffer / sizeof (EFI_GUID);\r | |
1397 | } else {\r | |
1398 | AprioriEntryCount = 0;\r | |
1399 | }\r | |
1400 | \r | |
1401 | //\r | |
1402 | // Put drivers on Apriori List on the Scheduled queue. The Discovered List includes\r | |
1403 | // drivers not in the current FV and these must be skipped since the a priori list\r | |
1404 | // is only valid for the FV that it resided in.\r | |
1405 | //\r | |
022c6d45 | 1406 | \r |
28a00297 | 1407 | for (Index = 0; Index < AprioriEntryCount; Index++) {\r |
1408 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
1409 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
1410 | if (CompareGuid (&DriverEntry->FileName, &AprioriFile[Index]) &&\r | |
1411 | (FvHandle == DriverEntry->FvHandle)) {\r | |
6a55eea3 | 1412 | CoreAcquireDispatcherLock ();\r |
28a00297 | 1413 | DriverEntry->Dependent = FALSE;\r |
1414 | DriverEntry->Scheduled = TRUE;\r | |
1415 | InsertTailList (&mScheduledQueue, &DriverEntry->ScheduledLink);\r | |
6a55eea3 | 1416 | CoreReleaseDispatcherLock ();\r |
1417 | DEBUG ((DEBUG_DISPATCH, "Evaluate DXE DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r | |
1418 | DEBUG ((DEBUG_DISPATCH, " RESULT = TRUE (Apriori)\n"));\r | |
28a00297 | 1419 | break;\r |
1420 | }\r | |
1421 | }\r | |
1422 | }\r | |
1423 | \r | |
28a00297 | 1424 | //\r |
022c6d45 | 1425 | // Free data allocated by Fv->ReadSection ()\r |
28a00297 | 1426 | //\r |
022c6d45 | 1427 | CoreFreePool (AprioriFile);\r |
28a00297 | 1428 | }\r |
1429 | }\r | |
1430 | \r | |
1431 | \r | |
28a00297 | 1432 | \r |
162ed594 | 1433 | /**\r |
28a00297 | 1434 | Initialize the dispatcher. Initialize the notification function that runs when\r |
e94a9ff7 | 1435 | an FV2 protocol is added to the system.\r |
28a00297 | 1436 | \r |
162ed594 | 1437 | **/\r |
1438 | VOID\r | |
1439 | CoreInitializeDispatcher (\r | |
1440 | VOID\r | |
1441 | )\r | |
28a00297 | 1442 | {\r |
67e9ab84 BD |
1443 | PERF_FUNCTION_BEGIN ();\r |
1444 | \r | |
7899b797 | 1445 | mFwVolEvent = EfiCreateProtocolNotifyEvent (\r |
022c6d45 | 1446 | &gEfiFirmwareVolume2ProtocolGuid,\r |
28a00297 | 1447 | TPL_CALLBACK,\r |
1448 | CoreFwVolEventProtocolNotify,\r | |
1449 | NULL,\r | |
7899b797 | 1450 | &mFwVolEventRegistration\r |
28a00297 | 1451 | );\r |
67e9ab84 BD |
1452 | \r |
1453 | PERF_FUNCTION_END ();\r | |
28a00297 | 1454 | }\r |
1455 | \r | |
1456 | //\r | |
1457 | // Function only used in debug builds\r | |
1458 | //\r | |
162ed594 | 1459 | \r |
1460 | /**\r | |
1461 | Traverse the discovered list for any drivers that were discovered but not loaded\r | |
1462 | because the dependency experessions evaluated to false.\r | |
1463 | \r | |
1464 | **/\r | |
28a00297 | 1465 | VOID\r |
1466 | CoreDisplayDiscoveredNotDispatched (\r | |
1467 | VOID\r | |
1468 | )\r | |
28a00297 | 1469 | {\r |
1470 | LIST_ENTRY *Link;\r | |
1471 | EFI_CORE_DRIVER_ENTRY *DriverEntry;\r | |
1472 | \r | |
1473 | for (Link = mDiscoveredList.ForwardLink;Link !=&mDiscoveredList; Link = Link->ForwardLink) {\r | |
1474 | DriverEntry = CR(Link, EFI_CORE_DRIVER_ENTRY, Link, EFI_CORE_DRIVER_ENTRY_SIGNATURE);\r | |
1475 | if (DriverEntry->Dependent) {\r | |
162ed594 | 1476 | DEBUG ((DEBUG_LOAD, "Driver %g was discovered but not loaded!!\n", &DriverEntry->FileName));\r |
28a00297 | 1477 | }\r |
1478 | }\r | |
1479 | }\r |