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Commit | Line | Data |
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6b46d772 SV |
1 | /** @file\r |
2 | MM Driver Dispatcher.\r | |
3 | \r | |
4 | Step #1 - When a FV protocol is added to the system every driver in the FV\r | |
5 | is added to the mDiscoveredList. The Before, and After Depex are\r | |
6 | pre-processed as drivers are added to the mDiscoveredList. If an Apriori\r | |
9cf9de66 | 7 | file exists in the FV those drivers are added to the\r |
7f72ec0b | 8 | mScheduledQueue. The mFwVolList is used to make sure a\r |
6b46d772 SV |
9 | FV is only processed once.\r |
10 | \r | |
11 | Step #2 - Dispatch. Remove driver from the mScheduledQueue and load and\r | |
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 | |
14 | be placed on the mScheduledQueue.\r | |
15 | \r | |
16 | Step #3 - Adding to the mScheduledQueue requires that you process Before\r | |
17 | and After dependencies. This is done recursively as the call to add\r | |
da29388b SM |
18 | to the mScheduledQueue checks for Before Depexes and recursively\r |
19 | adds all Before Depexes. It then adds the item that was passed in\r | |
20 | and then processess the After dependencies by recursively calling\r | |
21 | the routine.\r | |
6b46d772 SV |
22 | \r |
23 | Dispatcher Rules:\r | |
24 | The rules for the dispatcher are similar to the DXE dispatcher.\r | |
25 | \r | |
26 | The rules for DXE dispatcher are in chapter 10 of the DXE CIS. Figure 10-3\r | |
27 | is the state diagram for the DXE dispatcher\r | |
28 | \r | |
29 | Depex - Dependency Expresion.\r | |
30 | \r | |
31 | Copyright (c) 2014, Hewlett-Packard Development Company, L.P.\r | |
32 | Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r | |
da29388b | 33 | Copyright (c) 2016 - 2021, Arm Limited. All rights reserved.<BR>\r |
6b46d772 | 34 | \r |
86094561 | 35 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
6b46d772 SV |
36 | \r |
37 | **/\r | |
38 | \r | |
39 | #include "StandaloneMmCore.h"\r | |
40 | \r | |
41 | //\r | |
42 | // MM Dispatcher Data structures\r | |
43 | //\r | |
7f72ec0b | 44 | #define KNOWN_FWVOL_SIGNATURE SIGNATURE_32('k','n','o','w')\r |
6b46d772 SV |
45 | \r |
46 | typedef struct {\r | |
91415a36 MK |
47 | UINTN Signature;\r |
48 | LIST_ENTRY Link; // mFwVolList\r | |
49 | EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r | |
7f72ec0b | 50 | } KNOWN_FWVOL;\r |
6b46d772 SV |
51 | \r |
52 | //\r | |
53 | // Function Prototypes\r | |
54 | //\r | |
55 | \r | |
56 | EFI_STATUS\r | |
57 | MmCoreFfsFindMmDriver (\r | |
58 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader\r | |
59 | );\r | |
60 | \r | |
61 | /**\r | |
62 | Insert InsertedDriverEntry onto the mScheduledQueue. To do this you\r | |
63 | must add any driver with a before dependency on InsertedDriverEntry first.\r | |
da29388b SM |
64 | You do this by recursively calling this routine. After all the Before Depexes\r |
65 | are processed you can add InsertedDriverEntry to the mScheduledQueue.\r | |
6b46d772 SV |
66 | Then you can add any driver with an After dependency on InsertedDriverEntry\r |
67 | by recursively calling this routine.\r | |
68 | \r | |
69 | @param InsertedDriverEntry The driver to insert on the ScheduledLink Queue\r | |
70 | \r | |
71 | **/\r | |
72 | VOID\r | |
73 | MmInsertOnScheduledQueueWhileProcessingBeforeAndAfter (\r | |
91415a36 | 74 | IN EFI_MM_DRIVER_ENTRY *InsertedDriverEntry\r |
6b46d772 SV |
75 | );\r |
76 | \r | |
77 | //\r | |
78 | // The Driver List contains one copy of every driver that has been discovered.\r | |
79 | // Items are never removed from the driver list. List of EFI_MM_DRIVER_ENTRY\r | |
80 | //\r | |
81 | LIST_ENTRY mDiscoveredList = INITIALIZE_LIST_HEAD_VARIABLE (mDiscoveredList);\r | |
82 | \r | |
83 | //\r | |
84 | // Queue of drivers that are ready to dispatch. This queue is a subset of the\r | |
85 | // mDiscoveredList.list of EFI_MM_DRIVER_ENTRY.\r | |
86 | //\r | |
87 | LIST_ENTRY mScheduledQueue = INITIALIZE_LIST_HEAD_VARIABLE (mScheduledQueue);\r | |
88 | \r | |
89 | //\r | |
7f72ec0b LE |
90 | // List of firmware volume headers whose containing firmware volumes have been\r |
91 | // parsed and added to the mFwDriverList.\r | |
6b46d772 | 92 | //\r |
7f72ec0b | 93 | LIST_ENTRY mFwVolList = INITIALIZE_LIST_HEAD_VARIABLE (mFwVolList);\r |
6b46d772 SV |
94 | \r |
95 | //\r | |
da29388b | 96 | // Flag for the MM Dispacher. TRUE if dispatcher is executing.\r |
6b46d772 SV |
97 | //\r |
98 | BOOLEAN gDispatcherRunning = FALSE;\r | |
99 | \r | |
100 | //\r | |
101 | // Flag for the MM Dispacher. TRUE if there is one or more MM drivers ready to be dispatched\r | |
102 | //\r | |
103 | BOOLEAN gRequestDispatch = FALSE;\r | |
104 | \r | |
105 | //\r | |
106 | // The global variable is defined for Loading modules at fixed address feature to track the MM code\r | |
107 | // memory range usage. It is a bit mapped array in which every bit indicates the correspoding\r | |
108 | // memory page available or not.\r | |
109 | //\r | |
91415a36 | 110 | GLOBAL_REMOVE_IF_UNREFERENCED UINT64 *mMmCodeMemoryRangeUsageBitMap = NULL;\r |
6b46d772 SV |
111 | \r |
112 | /**\r | |
113 | To check memory usage bit map array to figure out if the memory range in which the image will be loaded\r | |
da29388b | 114 | is available or not. If memory range is avaliable, the function will mark the corresponding bits to 1\r |
6b46d772 SV |
115 | which indicates the memory range is used. The function is only invoked when load modules at fixed address\r |
116 | feature is enabled.\r | |
117 | \r | |
118 | @param ImageBase The base addres the image will be loaded at.\r | |
119 | @param ImageSize The size of the image\r | |
120 | \r | |
121 | @retval EFI_SUCCESS The memory range the image will be loaded in is available\r | |
122 | @retval EFI_NOT_FOUND The memory range the image will be loaded in is not available\r | |
123 | **/\r | |
124 | EFI_STATUS\r | |
125 | CheckAndMarkFixLoadingMemoryUsageBitMap (\r | |
91415a36 MK |
126 | IN EFI_PHYSICAL_ADDRESS ImageBase,\r |
127 | IN UINTN ImageSize\r | |
6b46d772 SV |
128 | )\r |
129 | {\r | |
91415a36 MK |
130 | UINT32 MmCodePageNumber;\r |
131 | UINT64 MmCodeSize;\r | |
132 | EFI_PHYSICAL_ADDRESS MmCodeBase;\r | |
133 | UINTN BaseOffsetPageNumber;\r | |
134 | UINTN TopOffsetPageNumber;\r | |
135 | UINTN Index;\r | |
6b46d772 SV |
136 | \r |
137 | //\r | |
138 | // Build tool will calculate the smm code size and then patch the PcdLoadFixAddressMmCodePageNumber\r | |
139 | //\r | |
140 | MmCodePageNumber = 0;\r | |
91415a36 MK |
141 | MmCodeSize = EFI_PAGES_TO_SIZE (MmCodePageNumber);\r |
142 | MmCodeBase = gLoadModuleAtFixAddressMmramBase;\r | |
6b46d772 SV |
143 | \r |
144 | //\r | |
145 | // If the memory usage bit map is not initialized, do it. Every bit in the array\r | |
146 | // indicate the status of the corresponding memory page, available or not\r | |
147 | //\r | |
148 | if (mMmCodeMemoryRangeUsageBitMap == NULL) {\r | |
149 | mMmCodeMemoryRangeUsageBitMap = AllocateZeroPool (((MmCodePageNumber / 64) + 1) * sizeof (UINT64));\r | |
150 | }\r | |
151 | \r | |
152 | //\r | |
153 | // If the Dxe code memory range is not allocated or the bit map array allocation failed, return EFI_NOT_FOUND\r | |
154 | //\r | |
155 | if (mMmCodeMemoryRangeUsageBitMap == NULL) {\r | |
156 | return EFI_NOT_FOUND;\r | |
157 | }\r | |
158 | \r | |
159 | //\r | |
160 | // see if the memory range for loading the image is in the MM code range.\r | |
161 | //\r | |
91415a36 | 162 | if ((MmCodeBase + MmCodeSize < ImageBase + ImageSize) || (MmCodeBase > ImageBase)) {\r |
6b46d772 SV |
163 | return EFI_NOT_FOUND;\r |
164 | }\r | |
165 | \r | |
166 | //\r | |
da29388b | 167 | // Test if the memory is available or not.\r |
6b46d772 SV |
168 | //\r |
169 | BaseOffsetPageNumber = (UINTN)EFI_SIZE_TO_PAGES ((UINT32)(ImageBase - MmCodeBase));\r | |
170 | TopOffsetPageNumber = (UINTN)EFI_SIZE_TO_PAGES ((UINT32)(ImageBase + ImageSize - MmCodeBase));\r | |
91415a36 | 171 | for (Index = BaseOffsetPageNumber; Index < TopOffsetPageNumber; Index++) {\r |
6b46d772 SV |
172 | if ((mMmCodeMemoryRangeUsageBitMap[Index / 64] & LShiftU64 (1, (Index % 64))) != 0) {\r |
173 | //\r | |
174 | // This page is already used.\r | |
175 | //\r | |
176 | return EFI_NOT_FOUND;\r | |
177 | }\r | |
178 | }\r | |
179 | \r | |
180 | //\r | |
181 | // Being here means the memory range is available. So mark the bits for the memory range\r | |
182 | //\r | |
91415a36 | 183 | for (Index = BaseOffsetPageNumber; Index < TopOffsetPageNumber; Index++) {\r |
6b46d772 SV |
184 | mMmCodeMemoryRangeUsageBitMap[Index / 64] |= LShiftU64 (1, (Index % 64));\r |
185 | }\r | |
91415a36 MK |
186 | \r |
187 | return EFI_SUCCESS;\r | |
6b46d772 SV |
188 | }\r |
189 | \r | |
190 | /**\r | |
191 | Get the fixed loading address from image header assigned by build tool. This function only be called\r | |
192 | when Loading module at Fixed address feature enabled.\r | |
193 | \r | |
194 | @param ImageContext Pointer to the image context structure that describes the PE/COFF\r | |
195 | image that needs to be examined by this function.\r | |
196 | @retval EFI_SUCCESS An fixed loading address is assigned to this image by build tools .\r | |
197 | @retval EFI_NOT_FOUND The image has no assigned fixed loadding address.\r | |
198 | \r | |
199 | **/\r | |
200 | EFI_STATUS\r | |
91415a36 | 201 | GetPeCoffImageFixLoadingAssignedAddress (\r |
6b46d772 SV |
202 | IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext\r |
203 | )\r | |
204 | {\r | |
91415a36 MK |
205 | UINTN SectionHeaderOffset;\r |
206 | EFI_STATUS Status;\r | |
207 | EFI_IMAGE_SECTION_HEADER SectionHeader;\r | |
208 | EFI_IMAGE_OPTIONAL_HEADER_UNION *ImgHdr;\r | |
209 | EFI_PHYSICAL_ADDRESS FixLoadingAddress;\r | |
210 | UINT16 Index;\r | |
211 | UINTN Size;\r | |
212 | UINT16 NumberOfSections;\r | |
213 | UINT64 ValueInSectionHeader;\r | |
6b46d772 SV |
214 | \r |
215 | FixLoadingAddress = 0;\r | |
91415a36 | 216 | Status = EFI_NOT_FOUND;\r |
6b46d772 SV |
217 | \r |
218 | //\r | |
219 | // Get PeHeader pointer\r | |
220 | //\r | |
91415a36 | 221 | ImgHdr = (EFI_IMAGE_OPTIONAL_HEADER_UNION *)((CHAR8 *)ImageContext->Handle + ImageContext->PeCoffHeaderOffset);\r |
6b46d772 | 222 | SectionHeaderOffset = ImageContext->PeCoffHeaderOffset + sizeof (UINT32) + sizeof (EFI_IMAGE_FILE_HEADER) +\r |
91415a36 | 223 | ImgHdr->Pe32.FileHeader.SizeOfOptionalHeader;\r |
6b46d772 SV |
224 | NumberOfSections = ImgHdr->Pe32.FileHeader.NumberOfSections;\r |
225 | \r | |
226 | //\r | |
227 | // Get base address from the first section header that doesn't point to code section.\r | |
228 | //\r | |
229 | for (Index = 0; Index < NumberOfSections; Index++) {\r | |
230 | //\r | |
231 | // Read section header from file\r | |
232 | //\r | |
91415a36 | 233 | Size = sizeof (EFI_IMAGE_SECTION_HEADER);\r |
6b46d772 SV |
234 | Status = ImageContext->ImageRead (\r |
235 | ImageContext->Handle,\r | |
236 | SectionHeaderOffset,\r | |
237 | &Size,\r | |
238 | &SectionHeader\r | |
239 | );\r | |
240 | if (EFI_ERROR (Status)) {\r | |
241 | return Status;\r | |
242 | }\r | |
243 | \r | |
244 | Status = EFI_NOT_FOUND;\r | |
245 | \r | |
246 | if ((SectionHeader.Characteristics & EFI_IMAGE_SCN_CNT_CODE) == 0) {\r | |
247 | //\r | |
248 | // Build tool will save the address in PointerToRelocations & PointerToLineNumbers fields\r | |
249 | // in the first section header that doesn't point to code section in image header. So there\r | |
250 | // is an assumption that when the feature is enabled, if a module with a loading address\r | |
251 | // assigned by tools, the PointerToRelocations & PointerToLineNumbers fields should not be\r | |
252 | // Zero, or else, these 2 fields should be set to Zero\r | |
253 | //\r | |
91415a36 | 254 | ValueInSectionHeader = ReadUnaligned64 ((UINT64 *)&SectionHeader.PointerToRelocations);\r |
6b46d772 SV |
255 | if (ValueInSectionHeader != 0) {\r |
256 | //\r | |
257 | // Found first section header that doesn't point to code section in which build tool saves the\r | |
258 | // offset to SMRAM base as image base in PointerToRelocations & PointerToLineNumbers fields\r | |
259 | //\r | |
260 | FixLoadingAddress = (EFI_PHYSICAL_ADDRESS)(gLoadModuleAtFixAddressMmramBase + (INT64)ValueInSectionHeader);\r | |
261 | //\r | |
262 | // Check if the memory range is available.\r | |
263 | //\r | |
264 | Status = CheckAndMarkFixLoadingMemoryUsageBitMap (FixLoadingAddress, (UINTN)(ImageContext->ImageSize + ImageContext->SectionAlignment));\r | |
91415a36 | 265 | if (!EFI_ERROR (Status)) {\r |
6b46d772 SV |
266 | //\r |
267 | // The assigned address is valid. Return the specified loading address\r | |
268 | //\r | |
269 | ImageContext->ImageAddress = FixLoadingAddress;\r | |
270 | }\r | |
271 | }\r | |
91415a36 | 272 | \r |
6b46d772 SV |
273 | break;\r |
274 | }\r | |
91415a36 | 275 | \r |
6b46d772 SV |
276 | SectionHeaderOffset += sizeof (EFI_IMAGE_SECTION_HEADER);\r |
277 | }\r | |
91415a36 MK |
278 | \r |
279 | DEBUG ((\r | |
280 | DEBUG_INFO|DEBUG_LOAD,\r | |
281 | "LOADING MODULE FIXED INFO: Loading module at fixed address %x, Status = %r\n",\r | |
282 | FixLoadingAddress,\r | |
283 | Status\r | |
284 | ));\r | |
6b46d772 SV |
285 | return Status;\r |
286 | }\r | |
91415a36 | 287 | \r |
6b46d772 SV |
288 | /**\r |
289 | Loads an EFI image into SMRAM.\r | |
290 | \r | |
291 | @param DriverEntry EFI_MM_DRIVER_ENTRY instance\r | |
292 | \r | |
293 | @return EFI_STATUS\r | |
294 | \r | |
295 | **/\r | |
296 | EFI_STATUS\r | |
297 | EFIAPI\r | |
298 | MmLoadImage (\r | |
299 | IN OUT EFI_MM_DRIVER_ENTRY *DriverEntry\r | |
300 | )\r | |
301 | {\r | |
91415a36 MK |
302 | UINTN PageCount;\r |
303 | EFI_STATUS Status;\r | |
304 | EFI_PHYSICAL_ADDRESS DstBuffer;\r | |
305 | PE_COFF_LOADER_IMAGE_CONTEXT ImageContext;\r | |
6b46d772 SV |
306 | \r |
307 | DEBUG ((DEBUG_INFO, "MmLoadImage - %g\n", &DriverEntry->FileName));\r | |
308 | \r | |
91415a36 | 309 | Status = EFI_SUCCESS;\r |
6b46d772 SV |
310 | \r |
311 | //\r | |
312 | // Initialize ImageContext\r | |
313 | //\r | |
91415a36 | 314 | ImageContext.Handle = DriverEntry->Pe32Data;\r |
6b46d772 SV |
315 | ImageContext.ImageRead = PeCoffLoaderImageReadFromMemory;\r |
316 | \r | |
317 | //\r | |
318 | // Get information about the image being loaded\r | |
319 | //\r | |
320 | Status = PeCoffLoaderGetImageInfo (&ImageContext);\r | |
321 | if (EFI_ERROR (Status)) {\r | |
6b46d772 SV |
322 | return Status;\r |
323 | }\r | |
324 | \r | |
325 | PageCount = (UINTN)EFI_SIZE_TO_PAGES ((UINTN)ImageContext.ImageSize + ImageContext.SectionAlignment);\r | |
326 | DstBuffer = (UINTN)(-1);\r | |
327 | \r | |
328 | Status = MmAllocatePages (\r | |
329 | AllocateMaxAddress,\r | |
330 | EfiRuntimeServicesCode,\r | |
331 | PageCount,\r | |
332 | &DstBuffer\r | |
333 | );\r | |
334 | if (EFI_ERROR (Status)) {\r | |
6b46d772 SV |
335 | return Status;\r |
336 | }\r | |
337 | \r | |
338 | ImageContext.ImageAddress = (EFI_PHYSICAL_ADDRESS)DstBuffer;\r | |
339 | \r | |
340 | //\r | |
da29388b | 341 | // Align buffer on section boundary\r |
6b46d772 SV |
342 | //\r |
343 | ImageContext.ImageAddress += ImageContext.SectionAlignment - 1;\r | |
344 | ImageContext.ImageAddress &= ~((EFI_PHYSICAL_ADDRESS)(ImageContext.SectionAlignment - 1));\r | |
345 | \r | |
346 | //\r | |
347 | // Load the image to our new buffer\r | |
348 | //\r | |
349 | Status = PeCoffLoaderLoadImage (&ImageContext);\r | |
350 | if (EFI_ERROR (Status)) {\r | |
6b46d772 SV |
351 | MmFreePages (DstBuffer, PageCount);\r |
352 | return Status;\r | |
353 | }\r | |
354 | \r | |
355 | //\r | |
356 | // Relocate the image in our new buffer\r | |
357 | //\r | |
358 | Status = PeCoffLoaderRelocateImage (&ImageContext);\r | |
359 | if (EFI_ERROR (Status)) {\r | |
6b46d772 SV |
360 | MmFreePages (DstBuffer, PageCount);\r |
361 | return Status;\r | |
362 | }\r | |
363 | \r | |
364 | //\r | |
365 | // Flush the instruction cache so the image data are written before we execute it\r | |
366 | //\r | |
91415a36 | 367 | InvalidateInstructionCacheRange ((VOID *)(UINTN)ImageContext.ImageAddress, (UINTN)ImageContext.ImageSize);\r |
6b46d772 SV |
368 | \r |
369 | //\r | |
370 | // Save Image EntryPoint in DriverEntry\r | |
371 | //\r | |
91415a36 MK |
372 | DriverEntry->ImageEntryPoint = ImageContext.EntryPoint;\r |
373 | DriverEntry->ImageBuffer = DstBuffer;\r | |
374 | DriverEntry->NumberOfPage = PageCount;\r | |
6b46d772 SV |
375 | \r |
376 | if (mEfiSystemTable != NULL) {\r | |
377 | Status = mEfiSystemTable->BootServices->AllocatePool (\r | |
378 | EfiBootServicesData,\r | |
379 | sizeof (EFI_LOADED_IMAGE_PROTOCOL),\r | |
380 | (VOID **)&DriverEntry->LoadedImage\r | |
381 | );\r | |
382 | if (EFI_ERROR (Status)) {\r | |
6b46d772 SV |
383 | MmFreePages (DstBuffer, PageCount);\r |
384 | return Status;\r | |
385 | }\r | |
386 | \r | |
387 | ZeroMem (DriverEntry->LoadedImage, sizeof (EFI_LOADED_IMAGE_PROTOCOL));\r | |
388 | //\r | |
389 | // Fill in the remaining fields of the Loaded Image Protocol instance.\r | |
390 | // Note: ImageBase is an SMRAM address that can not be accessed outside of SMRAM if SMRAM window is closed.\r | |
391 | //\r | |
91415a36 MK |
392 | DriverEntry->LoadedImage->Revision = EFI_LOADED_IMAGE_PROTOCOL_REVISION;\r |
393 | DriverEntry->LoadedImage->ParentHandle = NULL;\r | |
394 | DriverEntry->LoadedImage->SystemTable = mEfiSystemTable;\r | |
395 | DriverEntry->LoadedImage->DeviceHandle = NULL;\r | |
396 | DriverEntry->LoadedImage->FilePath = NULL;\r | |
6b46d772 SV |
397 | \r |
398 | DriverEntry->LoadedImage->ImageBase = (VOID *)(UINTN)DriverEntry->ImageBuffer;\r | |
399 | DriverEntry->LoadedImage->ImageSize = ImageContext.ImageSize;\r | |
400 | DriverEntry->LoadedImage->ImageCodeType = EfiRuntimeServicesCode;\r | |
401 | DriverEntry->LoadedImage->ImageDataType = EfiRuntimeServicesData;\r | |
402 | \r | |
403 | //\r | |
404 | // Create a new image handle in the UEFI handle database for the MM Driver\r | |
405 | //\r | |
406 | DriverEntry->ImageHandle = NULL;\r | |
91415a36 MK |
407 | Status = mEfiSystemTable->BootServices->InstallMultipleProtocolInterfaces (\r |
408 | &DriverEntry->ImageHandle,\r | |
409 | &gEfiLoadedImageProtocolGuid,\r | |
410 | DriverEntry->LoadedImage,\r | |
411 | NULL\r | |
412 | );\r | |
6b46d772 SV |
413 | }\r |
414 | \r | |
415 | //\r | |
416 | // Print the load address and the PDB file name if it is available\r | |
417 | //\r | |
418 | DEBUG_CODE_BEGIN ();\r | |
419 | \r | |
91415a36 MK |
420 | UINTN Index;\r |
421 | UINTN StartIndex;\r | |
422 | CHAR8 EfiFileName[256];\r | |
6b46d772 | 423 | \r |
91415a36 MK |
424 | DEBUG ((\r |
425 | DEBUG_INFO | DEBUG_LOAD,\r | |
426 | "Loading MM driver at 0x%11p EntryPoint=0x%11p ",\r | |
427 | (VOID *)(UINTN)ImageContext.ImageAddress,\r | |
428 | FUNCTION_ENTRY_POINT (ImageContext.EntryPoint)\r | |
429 | ));\r | |
6b46d772 SV |
430 | \r |
431 | //\r | |
432 | // Print Module Name by Pdb file path.\r | |
433 | // Windows and Unix style file path are all trimmed correctly.\r | |
434 | //\r | |
435 | if (ImageContext.PdbPointer != NULL) {\r | |
436 | StartIndex = 0;\r | |
437 | for (Index = 0; ImageContext.PdbPointer[Index] != 0; Index++) {\r | |
438 | if ((ImageContext.PdbPointer[Index] == '\\') || (ImageContext.PdbPointer[Index] == '/')) {\r | |
439 | StartIndex = Index + 1;\r | |
440 | }\r | |
441 | }\r | |
442 | \r | |
443 | //\r | |
444 | // Copy the PDB file name to our temporary string, and replace .pdb with .efi\r | |
445 | // The PDB file name is limited in the range of 0~255.\r | |
a57268fe | 446 | // If the length is bigger than 255, trim the redundant characters to avoid overflow in array boundary.\r |
6b46d772 SV |
447 | //\r |
448 | for (Index = 0; Index < sizeof (EfiFileName) - 4; Index++) {\r | |
449 | EfiFileName[Index] = ImageContext.PdbPointer[Index + StartIndex];\r | |
450 | if (EfiFileName[Index] == 0) {\r | |
451 | EfiFileName[Index] = '.';\r | |
452 | }\r | |
91415a36 | 453 | \r |
6b46d772 SV |
454 | if (EfiFileName[Index] == '.') {\r |
455 | EfiFileName[Index + 1] = 'e';\r | |
456 | EfiFileName[Index + 2] = 'f';\r | |
457 | EfiFileName[Index + 3] = 'i';\r | |
458 | EfiFileName[Index + 4] = 0;\r | |
459 | break;\r | |
460 | }\r | |
461 | }\r | |
462 | \r | |
463 | if (Index == sizeof (EfiFileName) - 4) {\r | |
464 | EfiFileName[Index] = 0;\r | |
465 | }\r | |
91415a36 | 466 | \r |
6b46d772 SV |
467 | DEBUG ((DEBUG_INFO | DEBUG_LOAD, "%a", EfiFileName));\r |
468 | }\r | |
91415a36 | 469 | \r |
6b46d772 SV |
470 | DEBUG ((DEBUG_INFO | DEBUG_LOAD, "\n"));\r |
471 | \r | |
472 | DEBUG_CODE_END ();\r | |
473 | \r | |
6b46d772 SV |
474 | return Status;\r |
475 | }\r | |
476 | \r | |
477 | /**\r | |
478 | Preprocess dependency expression and update DriverEntry to reflect the\r | |
479 | state of Before and After dependencies. If DriverEntry->Before\r | |
480 | or DriverEntry->After is set it will never be cleared.\r | |
481 | \r | |
482 | @param DriverEntry DriverEntry element to update .\r | |
483 | \r | |
484 | @retval EFI_SUCCESS It always works.\r | |
485 | \r | |
486 | **/\r | |
487 | EFI_STATUS\r | |
488 | MmPreProcessDepex (\r | |
489 | IN EFI_MM_DRIVER_ENTRY *DriverEntry\r | |
490 | )\r | |
491 | {\r | |
492 | UINT8 *Iterator;\r | |
493 | \r | |
91415a36 | 494 | Iterator = DriverEntry->Depex;\r |
6b46d772 SV |
495 | DriverEntry->Dependent = TRUE;\r |
496 | \r | |
497 | if (*Iterator == EFI_DEP_BEFORE) {\r | |
498 | DriverEntry->Before = TRUE;\r | |
499 | } else if (*Iterator == EFI_DEP_AFTER) {\r | |
500 | DriverEntry->After = TRUE;\r | |
501 | }\r | |
502 | \r | |
503 | if (DriverEntry->Before || DriverEntry->After) {\r | |
504 | CopyMem (&DriverEntry->BeforeAfterGuid, Iterator + 1, sizeof (EFI_GUID));\r | |
505 | }\r | |
506 | \r | |
507 | return EFI_SUCCESS;\r | |
508 | }\r | |
509 | \r | |
510 | /**\r | |
511 | Read Depex and pre-process the Depex for Before and After. If Section Extraction\r | |
512 | protocol returns an error via ReadSection defer the reading of the Depex.\r | |
513 | \r | |
514 | @param DriverEntry Driver to work on.\r | |
515 | \r | |
516 | @retval EFI_SUCCESS Depex read and preprossesed\r | |
517 | @retval EFI_PROTOCOL_ERROR The section extraction protocol returned an error\r | |
518 | and Depex reading needs to be retried.\r | |
519 | @retval Error DEPEX not found.\r | |
520 | \r | |
521 | **/\r | |
522 | EFI_STATUS\r | |
523 | MmGetDepexSectionAndPreProccess (\r | |
524 | IN EFI_MM_DRIVER_ENTRY *DriverEntry\r | |
525 | )\r | |
526 | {\r | |
91415a36 | 527 | EFI_STATUS Status;\r |
6b46d772 SV |
528 | \r |
529 | //\r | |
530 | // Data already read\r | |
531 | //\r | |
532 | if (DriverEntry->Depex == NULL) {\r | |
533 | Status = EFI_NOT_FOUND;\r | |
534 | } else {\r | |
535 | Status = EFI_SUCCESS;\r | |
536 | }\r | |
91415a36 | 537 | \r |
6b46d772 SV |
538 | if (EFI_ERROR (Status)) {\r |
539 | if (Status == EFI_PROTOCOL_ERROR) {\r | |
540 | //\r | |
541 | // The section extraction protocol failed so set protocol error flag\r | |
542 | //\r | |
543 | DriverEntry->DepexProtocolError = TRUE;\r | |
544 | } else {\r | |
545 | //\r | |
546 | // If no Depex assume depend on all architectural protocols\r | |
547 | //\r | |
91415a36 MK |
548 | DriverEntry->Depex = NULL;\r |
549 | DriverEntry->Dependent = TRUE;\r | |
6b46d772 SV |
550 | DriverEntry->DepexProtocolError = FALSE;\r |
551 | }\r | |
552 | } else {\r | |
553 | //\r | |
554 | // Set Before and After state information based on Depex\r | |
555 | // Driver will be put in Dependent state\r | |
556 | //\r | |
557 | MmPreProcessDepex (DriverEntry);\r | |
558 | DriverEntry->DepexProtocolError = FALSE;\r | |
559 | }\r | |
560 | \r | |
561 | return Status;\r | |
562 | }\r | |
563 | \r | |
564 | /**\r | |
565 | This is the main Dispatcher for MM and it exits when there are no more\r | |
566 | drivers to run. Drain the mScheduledQueue and load and start a PE\r | |
567 | image for each driver. Search the mDiscoveredList to see if any driver can\r | |
568 | be placed on the mScheduledQueue. If no drivers are placed on the\r | |
569 | mScheduledQueue exit the function.\r | |
570 | \r | |
571 | @retval EFI_SUCCESS All of the MM Drivers that could be dispatched\r | |
572 | have been run and the MM Entry Point has been\r | |
573 | registered.\r | |
574 | @retval EFI_NOT_READY The MM Driver that registered the MM Entry Point\r | |
575 | was just dispatched.\r | |
576 | @retval EFI_NOT_FOUND There are no MM Drivers available to be dispatched.\r | |
577 | @retval EFI_ALREADY_STARTED The MM Dispatcher is already running\r | |
578 | \r | |
579 | **/\r | |
580 | EFI_STATUS\r | |
581 | MmDispatcher (\r | |
582 | VOID\r | |
583 | )\r | |
584 | {\r | |
91415a36 MK |
585 | EFI_STATUS Status;\r |
586 | LIST_ENTRY *Link;\r | |
6b46d772 | 587 | EFI_MM_DRIVER_ENTRY *DriverEntry;\r |
91415a36 | 588 | BOOLEAN ReadyToRun;\r |
6b46d772 SV |
589 | \r |
590 | DEBUG ((DEBUG_INFO, "MmDispatcher\n"));\r | |
591 | \r | |
592 | if (!gRequestDispatch) {\r | |
593 | DEBUG ((DEBUG_INFO, " !gRequestDispatch\n"));\r | |
594 | return EFI_NOT_FOUND;\r | |
595 | }\r | |
596 | \r | |
597 | if (gDispatcherRunning) {\r | |
598 | DEBUG ((DEBUG_INFO, " gDispatcherRunning\n"));\r | |
599 | //\r | |
600 | // If the dispatcher is running don't let it be restarted.\r | |
601 | //\r | |
602 | return EFI_ALREADY_STARTED;\r | |
603 | }\r | |
604 | \r | |
605 | gDispatcherRunning = TRUE;\r | |
606 | \r | |
607 | do {\r | |
608 | //\r | |
609 | // Drain the Scheduled Queue\r | |
610 | //\r | |
611 | DEBUG ((DEBUG_INFO, " Drain the Scheduled Queue\n"));\r | |
612 | while (!IsListEmpty (&mScheduledQueue)) {\r | |
613 | DriverEntry = CR (\r | |
614 | mScheduledQueue.ForwardLink,\r | |
615 | EFI_MM_DRIVER_ENTRY,\r | |
616 | ScheduledLink,\r | |
617 | EFI_MM_DRIVER_ENTRY_SIGNATURE\r | |
618 | );\r | |
619 | DEBUG ((DEBUG_INFO, " DriverEntry (Scheduled) - %g\n", &DriverEntry->FileName));\r | |
620 | \r | |
621 | //\r | |
622 | // Load the MM Driver image into memory. If the Driver was transitioned from\r | |
da29388b | 623 | // Untrusted to Scheduled it would have already been loaded so we may need to\r |
6b46d772 SV |
624 | // skip the LoadImage\r |
625 | //\r | |
626 | if (DriverEntry->ImageHandle == NULL) {\r | |
627 | Status = MmLoadImage (DriverEntry);\r | |
628 | \r | |
629 | //\r | |
630 | // Update the driver state to reflect that it's been loaded\r | |
631 | //\r | |
632 | if (EFI_ERROR (Status)) {\r | |
633 | //\r | |
634 | // The MM Driver could not be loaded, and do not attempt to load or start it again.\r | |
635 | // Take driver from Scheduled to Initialized.\r | |
636 | //\r | |
91415a36 MK |
637 | DriverEntry->Initialized = TRUE;\r |
638 | DriverEntry->Scheduled = FALSE;\r | |
6b46d772 SV |
639 | RemoveEntryList (&DriverEntry->ScheduledLink);\r |
640 | \r | |
641 | //\r | |
642 | // If it's an error don't try the StartImage\r | |
643 | //\r | |
644 | continue;\r | |
645 | }\r | |
646 | }\r | |
647 | \r | |
91415a36 MK |
648 | DriverEntry->Scheduled = FALSE;\r |
649 | DriverEntry->Initialized = TRUE;\r | |
6b46d772 SV |
650 | RemoveEntryList (&DriverEntry->ScheduledLink);\r |
651 | \r | |
6b46d772 SV |
652 | //\r |
653 | // For each MM driver, pass NULL as ImageHandle\r | |
654 | //\r | |
655 | if (mEfiSystemTable == NULL) {\r | |
656 | DEBUG ((DEBUG_INFO, "StartImage - 0x%x (Standalone Mode)\n", DriverEntry->ImageEntryPoint));\r | |
91415a36 | 657 | Status = ((MM_IMAGE_ENTRY_POINT)(UINTN)DriverEntry->ImageEntryPoint)(DriverEntry->ImageHandle, &gMmCoreMmst);\r |
6b46d772 SV |
658 | } else {\r |
659 | DEBUG ((DEBUG_INFO, "StartImage - 0x%x (Tradition Mode)\n", DriverEntry->ImageEntryPoint));\r | |
91415a36 MK |
660 | Status = ((EFI_IMAGE_ENTRY_POINT)(UINTN)DriverEntry->ImageEntryPoint)(\r |
661 | DriverEntry->ImageHandle,\r | |
662 | mEfiSystemTable\r | |
663 | );\r | |
6b46d772 | 664 | }\r |
91415a36 MK |
665 | \r |
666 | if (EFI_ERROR (Status)) {\r | |
6b46d772 | 667 | DEBUG ((DEBUG_INFO, "StartImage Status - %r\n", Status));\r |
91415a36 | 668 | MmFreePages (DriverEntry->ImageBuffer, DriverEntry->NumberOfPage);\r |
6b46d772 | 669 | }\r |
6b46d772 SV |
670 | }\r |
671 | \r | |
672 | //\r | |
673 | // Search DriverList for items to place on Scheduled Queue\r | |
674 | //\r | |
675 | DEBUG ((DEBUG_INFO, " Search DriverList for items to place on Scheduled Queue\n"));\r | |
676 | ReadyToRun = FALSE;\r | |
677 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
678 | DriverEntry = CR (Link, EFI_MM_DRIVER_ENTRY, Link, EFI_MM_DRIVER_ENTRY_SIGNATURE);\r | |
679 | DEBUG ((DEBUG_INFO, " DriverEntry (Discovered) - %g\n", &DriverEntry->FileName));\r | |
680 | \r | |
681 | if (DriverEntry->DepexProtocolError) {\r | |
682 | //\r | |
683 | // If Section Extraction Protocol did not let the Depex be read before retry the read\r | |
684 | //\r | |
685 | Status = MmGetDepexSectionAndPreProccess (DriverEntry);\r | |
686 | }\r | |
687 | \r | |
688 | if (DriverEntry->Dependent) {\r | |
689 | if (MmIsSchedulable (DriverEntry)) {\r | |
690 | MmInsertOnScheduledQueueWhileProcessingBeforeAndAfter (DriverEntry);\r | |
691 | ReadyToRun = TRUE;\r | |
692 | }\r | |
693 | }\r | |
694 | }\r | |
695 | } while (ReadyToRun);\r | |
696 | \r | |
697 | //\r | |
698 | // If there is no more MM driver to dispatch, stop the dispatch request\r | |
699 | //\r | |
700 | DEBUG ((DEBUG_INFO, " no more MM driver to dispatch, stop the dispatch request\n"));\r | |
701 | gRequestDispatch = FALSE;\r | |
702 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
703 | DriverEntry = CR (Link, EFI_MM_DRIVER_ENTRY, Link, EFI_MM_DRIVER_ENTRY_SIGNATURE);\r | |
704 | DEBUG ((DEBUG_INFO, " DriverEntry (Discovered) - %g\n", &DriverEntry->FileName));\r | |
705 | \r | |
706 | if (!DriverEntry->Initialized) {\r | |
707 | //\r | |
708 | // We have MM driver pending to dispatch\r | |
709 | //\r | |
710 | gRequestDispatch = TRUE;\r | |
711 | break;\r | |
712 | }\r | |
713 | }\r | |
714 | \r | |
715 | gDispatcherRunning = FALSE;\r | |
716 | \r | |
717 | return EFI_SUCCESS;\r | |
718 | }\r | |
719 | \r | |
720 | /**\r | |
721 | Insert InsertedDriverEntry onto the mScheduledQueue. To do this you\r | |
722 | must add any driver with a before dependency on InsertedDriverEntry first.\r | |
da29388b SM |
723 | You do this by recursively calling this routine. After all the Before Depexes\r |
724 | are processed you can add InsertedDriverEntry to the mScheduledQueue.\r | |
6b46d772 SV |
725 | Then you can add any driver with an After dependency on InsertedDriverEntry\r |
726 | by recursively calling this routine.\r | |
727 | \r | |
728 | @param InsertedDriverEntry The driver to insert on the ScheduledLink Queue\r | |
729 | \r | |
730 | **/\r | |
731 | VOID\r | |
732 | MmInsertOnScheduledQueueWhileProcessingBeforeAndAfter (\r | |
91415a36 | 733 | IN EFI_MM_DRIVER_ENTRY *InsertedDriverEntry\r |
6b46d772 SV |
734 | )\r |
735 | {\r | |
91415a36 MK |
736 | LIST_ENTRY *Link;\r |
737 | EFI_MM_DRIVER_ENTRY *DriverEntry;\r | |
6b46d772 SV |
738 | \r |
739 | //\r | |
740 | // Process Before Dependency\r | |
741 | //\r | |
742 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
91415a36 MK |
743 | DriverEntry = CR (Link, EFI_MM_DRIVER_ENTRY, Link, EFI_MM_DRIVER_ENTRY_SIGNATURE);\r |
744 | if (DriverEntry->Before && DriverEntry->Dependent && (DriverEntry != InsertedDriverEntry)) {\r | |
6b46d772 SV |
745 | DEBUG ((DEBUG_DISPATCH, "Evaluate MM DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r |
746 | DEBUG ((DEBUG_DISPATCH, " BEFORE FFS(%g) = ", &DriverEntry->BeforeAfterGuid));\r | |
747 | if (CompareGuid (&InsertedDriverEntry->FileName, &DriverEntry->BeforeAfterGuid)) {\r | |
748 | //\r | |
749 | // Recursively process BEFORE\r | |
750 | //\r | |
751 | DEBUG ((DEBUG_DISPATCH, "TRUE\n END\n RESULT = TRUE\n"));\r | |
752 | MmInsertOnScheduledQueueWhileProcessingBeforeAndAfter (DriverEntry);\r | |
753 | } else {\r | |
754 | DEBUG ((DEBUG_DISPATCH, "FALSE\n END\n RESULT = FALSE\n"));\r | |
755 | }\r | |
756 | }\r | |
757 | }\r | |
758 | \r | |
759 | //\r | |
760 | // Convert driver from Dependent to Scheduled state\r | |
761 | //\r | |
762 | \r | |
763 | InsertedDriverEntry->Dependent = FALSE;\r | |
764 | InsertedDriverEntry->Scheduled = TRUE;\r | |
765 | InsertTailList (&mScheduledQueue, &InsertedDriverEntry->ScheduledLink);\r | |
766 | \r | |
6b46d772 SV |
767 | //\r |
768 | // Process After Dependency\r | |
769 | //\r | |
770 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r | |
91415a36 MK |
771 | DriverEntry = CR (Link, EFI_MM_DRIVER_ENTRY, Link, EFI_MM_DRIVER_ENTRY_SIGNATURE);\r |
772 | if (DriverEntry->After && DriverEntry->Dependent && (DriverEntry != InsertedDriverEntry)) {\r | |
6b46d772 SV |
773 | DEBUG ((DEBUG_DISPATCH, "Evaluate MM DEPEX for FFS(%g)\n", &DriverEntry->FileName));\r |
774 | DEBUG ((DEBUG_DISPATCH, " AFTER FFS(%g) = ", &DriverEntry->BeforeAfterGuid));\r | |
775 | if (CompareGuid (&InsertedDriverEntry->FileName, &DriverEntry->BeforeAfterGuid)) {\r | |
776 | //\r | |
777 | // Recursively process AFTER\r | |
778 | //\r | |
779 | DEBUG ((DEBUG_DISPATCH, "TRUE\n END\n RESULT = TRUE\n"));\r | |
780 | MmInsertOnScheduledQueueWhileProcessingBeforeAndAfter (DriverEntry);\r | |
781 | } else {\r | |
782 | DEBUG ((DEBUG_DISPATCH, "FALSE\n END\n RESULT = FALSE\n"));\r | |
783 | }\r | |
784 | }\r | |
785 | }\r | |
786 | }\r | |
787 | \r | |
788 | /**\r | |
7f72ec0b | 789 | Return TRUE if the firmware volume has been processed, FALSE if not.\r |
6b46d772 | 790 | \r |
7f72ec0b LE |
791 | @param FwVolHeader The header of the firmware volume that's being\r |
792 | tested.\r | |
6b46d772 | 793 | \r |
7f72ec0b LE |
794 | @retval TRUE The firmware volume denoted by FwVolHeader has\r |
795 | been processed\r | |
796 | @retval FALSE The firmware volume denoted by FwVolHeader has\r | |
797 | not yet been processed\r | |
6b46d772 SV |
798 | \r |
799 | **/\r | |
800 | BOOLEAN\r | |
801 | FvHasBeenProcessed (\r | |
91415a36 | 802 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader\r |
6b46d772 SV |
803 | )\r |
804 | {\r | |
91415a36 MK |
805 | LIST_ENTRY *Link;\r |
806 | KNOWN_FWVOL *KnownFwVol;\r | |
6b46d772 | 807 | \r |
7f72ec0b LE |
808 | for (Link = mFwVolList.ForwardLink;\r |
809 | Link != &mFwVolList;\r | |
91415a36 MK |
810 | Link = Link->ForwardLink)\r |
811 | {\r | |
7f72ec0b LE |
812 | KnownFwVol = CR (Link, KNOWN_FWVOL, Link, KNOWN_FWVOL_SIGNATURE);\r |
813 | if (KnownFwVol->FwVolHeader == FwVolHeader) {\r | |
6b46d772 SV |
814 | return TRUE;\r |
815 | }\r | |
816 | }\r | |
91415a36 | 817 | \r |
6b46d772 SV |
818 | return FALSE;\r |
819 | }\r | |
820 | \r | |
821 | /**\r | |
7f72ec0b LE |
822 | Remember that the firmware volume denoted by FwVolHeader has had its drivers\r |
823 | placed on mDiscoveredList. This function adds entries to mFwVolList. Items\r | |
824 | are never removed/freed from mFwVolList.\r | |
6b46d772 | 825 | \r |
7f72ec0b LE |
826 | @param FwVolHeader The header of the firmware volume that's being\r |
827 | processed.\r | |
6b46d772 SV |
828 | \r |
829 | **/\r | |
830 | VOID\r | |
81e9eca7 | 831 | FvIsBeingProcessed (\r |
91415a36 | 832 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader\r |
6b46d772 SV |
833 | )\r |
834 | {\r | |
91415a36 | 835 | KNOWN_FWVOL *KnownFwVol;\r |
6b46d772 | 836 | \r |
bd7c73ba | 837 | DEBUG ((DEBUG_INFO, "FvIsBeingProcessed - 0x%08x\n", FwVolHeader));\r |
6b46d772 | 838 | \r |
7f72ec0b LE |
839 | KnownFwVol = AllocatePool (sizeof (KNOWN_FWVOL));\r |
840 | ASSERT (KnownFwVol != NULL);\r | |
6b46d772 | 841 | \r |
91415a36 | 842 | KnownFwVol->Signature = KNOWN_FWVOL_SIGNATURE;\r |
7f72ec0b LE |
843 | KnownFwVol->FwVolHeader = FwVolHeader;\r |
844 | InsertTailList (&mFwVolList, &KnownFwVol->Link);\r | |
6b46d772 SV |
845 | }\r |
846 | \r | |
847 | /**\r | |
848 | Add an entry to the mDiscoveredList. Allocate memory to store the DriverEntry,\r | |
da29388b | 849 | and initialise any state variables. Read the Depex from the FV and store it\r |
6b46d772 | 850 | in DriverEntry. Pre-process the Depex to set the Before and After state.\r |
da29388b | 851 | The Discovered list is never freed and contains booleans that represent the\r |
6b46d772 SV |
852 | other possible MM driver states.\r |
853 | \r | |
c6fa62aa SM |
854 | @param [in] FwVolHeader Pointer to the formware volume header.\r |
855 | @param [in] Pe32Data Pointer to the PE data.\r | |
856 | @param [in] Pe32DataSize Size of the PE data.\r | |
857 | @param [in] Depex Pointer to the Depex info.\r | |
858 | @param [in] DepexSize Size of the Depex info.\r | |
859 | @param [in] DriverName Name of driver to add to mDiscoveredList.\r | |
6b46d772 SV |
860 | \r |
861 | @retval EFI_SUCCESS If driver was added to the mDiscoveredList.\r | |
6b46d772 SV |
862 | **/\r |
863 | EFI_STATUS\r | |
864 | MmAddToDriverList (\r | |
91415a36 MK |
865 | IN EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader,\r |
866 | IN VOID *Pe32Data,\r | |
867 | IN UINTN Pe32DataSize,\r | |
868 | IN VOID *Depex,\r | |
869 | IN UINTN DepexSize,\r | |
870 | IN EFI_GUID *DriverName\r | |
6b46d772 SV |
871 | )\r |
872 | {\r | |
873 | EFI_MM_DRIVER_ENTRY *DriverEntry;\r | |
874 | \r | |
875 | DEBUG ((DEBUG_INFO, "MmAddToDriverList - %g (0x%08x)\n", DriverName, Pe32Data));\r | |
876 | \r | |
877 | //\r | |
878 | // Create the Driver Entry for the list. ZeroPool initializes lots of variables to\r | |
879 | // NULL or FALSE.\r | |
880 | //\r | |
881 | DriverEntry = AllocateZeroPool (sizeof (EFI_MM_DRIVER_ENTRY));\r | |
882 | ASSERT (DriverEntry != NULL);\r | |
883 | \r | |
91415a36 | 884 | DriverEntry->Signature = EFI_MM_DRIVER_ENTRY_SIGNATURE;\r |
6b46d772 | 885 | CopyGuid (&DriverEntry->FileName, DriverName);\r |
91415a36 MK |
886 | DriverEntry->FwVolHeader = FwVolHeader;\r |
887 | DriverEntry->Pe32Data = Pe32Data;\r | |
888 | DriverEntry->Pe32DataSize = Pe32DataSize;\r | |
889 | DriverEntry->Depex = Depex;\r | |
890 | DriverEntry->DepexSize = DepexSize;\r | |
6b46d772 SV |
891 | \r |
892 | MmGetDepexSectionAndPreProccess (DriverEntry);\r | |
893 | \r | |
894 | InsertTailList (&mDiscoveredList, &DriverEntry->Link);\r | |
895 | gRequestDispatch = TRUE;\r | |
896 | \r | |
897 | return EFI_SUCCESS;\r | |
898 | }\r | |
899 | \r | |
6b46d772 SV |
900 | /**\r |
901 | Traverse the discovered list for any drivers that were discovered but not loaded\r | |
da29388b | 902 | because the dependency expressions evaluated to false.\r |
6b46d772 SV |
903 | \r |
904 | **/\r | |
905 | VOID\r | |
906 | MmDisplayDiscoveredNotDispatched (\r | |
907 | VOID\r | |
908 | )\r | |
909 | {\r | |
91415a36 MK |
910 | LIST_ENTRY *Link;\r |
911 | EFI_MM_DRIVER_ENTRY *DriverEntry;\r | |
6b46d772 | 912 | \r |
91415a36 | 913 | for (Link = mDiscoveredList.ForwardLink; Link != &mDiscoveredList; Link = Link->ForwardLink) {\r |
6b46d772 SV |
914 | DriverEntry = CR (Link, EFI_MM_DRIVER_ENTRY, Link, EFI_MM_DRIVER_ENTRY_SIGNATURE);\r |
915 | if (DriverEntry->Dependent) {\r | |
916 | DEBUG ((DEBUG_LOAD, "MM Driver %g was discovered but not loaded!!\n", &DriverEntry->FileName));\r | |
917 | }\r | |
918 | }\r | |
919 | }\r |