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1 | /** @file\r | |
2 | PCI Rom supporting funtions implementation for PCI Bus module.\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include "PciBus.h"\r | |
10 | \r | |
11 | /**\r | |
12 | Load the EFI Image from Option ROM\r | |
13 | \r | |
14 | @param PciIoDevice PCI IO device instance.\r | |
15 | @param FilePath The file path of the EFI Image\r | |
16 | @param BufferSize On input the size of Buffer in bytes. On output with a return\r | |
17 | code of EFI_SUCCESS, the amount of data transferred to Buffer.\r | |
18 | On output with a return code of EFI_BUFFER_TOO_SMALL,\r | |
19 | the size of Buffer required to retrieve the requested file.\r | |
20 | @param Buffer The memory buffer to transfer the file to. If Buffer is NULL,\r | |
21 | then no the size of the requested file is returned in BufferSize.\r | |
22 | \r | |
23 | @retval EFI_SUCCESS The file was loaded.\r | |
24 | @retval EFI_INVALID_PARAMETER FilePath is not a valid device path, or\r | |
25 | BufferSize is NULL.\r | |
26 | @retval EFI_NOT_FOUND Not found PCI Option Rom on PCI device.\r | |
27 | @retval EFI_DEVICE_ERROR Failed to decompress PCI Option Rom image.\r | |
28 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory entry.\r | |
29 | BufferSize has been updated with the size needed to complete the request.\r | |
30 | **/\r | |
31 | EFI_STATUS\r | |
32 | LocalLoadFile2 (\r | |
33 | IN PCI_IO_DEVICE *PciIoDevice,\r | |
34 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
35 | IN OUT UINTN *BufferSize,\r | |
36 | IN VOID *Buffer OPTIONAL\r | |
37 | )\r | |
38 | {\r | |
39 | EFI_STATUS Status;\r | |
40 | MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *EfiOpRomImageNode;\r | |
41 | EFI_PCI_EXPANSION_ROM_HEADER *EfiRomHeader;\r | |
42 | PCI_DATA_STRUCTURE *Pcir;\r | |
43 | UINT32 ImageSize;\r | |
44 | UINT8 *ImageBuffer;\r | |
45 | UINT32 ImageLength;\r | |
46 | UINT32 DestinationSize;\r | |
47 | UINT32 ScratchSize;\r | |
48 | VOID *Scratch;\r | |
49 | EFI_DECOMPRESS_PROTOCOL *Decompress;\r | |
50 | UINT32 InitializationSize;\r | |
51 | \r | |
52 | EfiOpRomImageNode = (MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *) FilePath;\r | |
53 | if ((EfiOpRomImageNode == NULL) ||\r | |
54 | (DevicePathType (FilePath) != MEDIA_DEVICE_PATH) ||\r | |
55 | (DevicePathSubType (FilePath) != MEDIA_RELATIVE_OFFSET_RANGE_DP) ||\r | |
56 | (DevicePathNodeLength (FilePath) != sizeof (MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH)) ||\r | |
57 | (!IsDevicePathEnd (NextDevicePathNode (FilePath))) ||\r | |
58 | (EfiOpRomImageNode->StartingOffset > EfiOpRomImageNode->EndingOffset) ||\r | |
59 | (EfiOpRomImageNode->EndingOffset >= PciIoDevice->RomSize) ||\r | |
60 | (BufferSize == NULL)\r | |
61 | ) {\r | |
62 | return EFI_INVALID_PARAMETER;\r | |
63 | }\r | |
64 | \r | |
65 | EfiRomHeader = (EFI_PCI_EXPANSION_ROM_HEADER *) (\r | |
66 | (UINT8 *) PciIoDevice->PciIo.RomImage + EfiOpRomImageNode->StartingOffset\r | |
67 | );\r | |
68 | if (EfiRomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r | |
69 | return EFI_NOT_FOUND;\r | |
70 | }\r | |
71 | \r | |
72 | \r | |
73 | Pcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) EfiRomHeader + EfiRomHeader->PcirOffset);\r | |
74 | ASSERT (Pcir->Signature == PCI_DATA_STRUCTURE_SIGNATURE);\r | |
75 | \r | |
76 | if ((Pcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) &&\r | |
77 | (EfiRomHeader->EfiSignature == EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE) &&\r | |
78 | ((EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER) ||\r | |
79 | (EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER)) &&\r | |
80 | (EfiRomHeader->CompressionType <= EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED)\r | |
81 | ) {\r | |
82 | \r | |
83 | ImageSize = Pcir->ImageLength * 512;\r | |
84 | InitializationSize = (UINT32) EfiRomHeader->InitializationSize * 512;\r | |
85 | if (InitializationSize > ImageSize || EfiRomHeader->EfiImageHeaderOffset >= InitializationSize) {\r | |
86 | return EFI_NOT_FOUND;\r | |
87 | }\r | |
88 | \r | |
89 | ImageBuffer = (UINT8 *) EfiRomHeader + EfiRomHeader->EfiImageHeaderOffset;\r | |
90 | ImageLength = InitializationSize - EfiRomHeader->EfiImageHeaderOffset;\r | |
91 | \r | |
92 | if (EfiRomHeader->CompressionType != EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED) {\r | |
93 | //\r | |
94 | // Uncompressed: Copy the EFI Image directly to user's buffer\r | |
95 | //\r | |
96 | if (Buffer == NULL || *BufferSize < ImageLength) {\r | |
97 | *BufferSize = ImageLength;\r | |
98 | return EFI_BUFFER_TOO_SMALL;\r | |
99 | }\r | |
100 | \r | |
101 | *BufferSize = ImageLength;\r | |
102 | CopyMem (Buffer, ImageBuffer, ImageLength);\r | |
103 | return EFI_SUCCESS;\r | |
104 | \r | |
105 | } else {\r | |
106 | //\r | |
107 | // Compressed: Uncompress before copying\r | |
108 | //\r | |
109 | Status = gBS->LocateProtocol (&gEfiDecompressProtocolGuid, NULL, (VOID **) &Decompress);\r | |
110 | if (EFI_ERROR (Status)) {\r | |
111 | return EFI_DEVICE_ERROR;\r | |
112 | }\r | |
113 | Status = Decompress->GetInfo (\r | |
114 | Decompress,\r | |
115 | ImageBuffer,\r | |
116 | ImageLength,\r | |
117 | &DestinationSize,\r | |
118 | &ScratchSize\r | |
119 | );\r | |
120 | if (EFI_ERROR (Status)) {\r | |
121 | return EFI_DEVICE_ERROR;\r | |
122 | }\r | |
123 | \r | |
124 | if (Buffer == NULL || *BufferSize < DestinationSize) {\r | |
125 | *BufferSize = DestinationSize;\r | |
126 | return EFI_BUFFER_TOO_SMALL;\r | |
127 | }\r | |
128 | \r | |
129 | *BufferSize = DestinationSize;\r | |
130 | Scratch = AllocatePool (ScratchSize);\r | |
131 | if (Scratch == NULL) {\r | |
132 | return EFI_DEVICE_ERROR;\r | |
133 | }\r | |
134 | \r | |
135 | Status = Decompress->Decompress (\r | |
136 | Decompress,\r | |
137 | ImageBuffer,\r | |
138 | ImageLength,\r | |
139 | Buffer,\r | |
140 | DestinationSize,\r | |
141 | Scratch,\r | |
142 | ScratchSize\r | |
143 | );\r | |
144 | FreePool (Scratch);\r | |
145 | \r | |
146 | if (EFI_ERROR (Status)) {\r | |
147 | return EFI_DEVICE_ERROR;\r | |
148 | }\r | |
149 | return EFI_SUCCESS;\r | |
150 | }\r | |
151 | }\r | |
152 | \r | |
153 | return EFI_NOT_FOUND;\r | |
154 | }\r | |
155 | \r | |
156 | /**\r | |
157 | Initialize a PCI LoadFile2 instance.\r | |
158 | \r | |
159 | @param PciIoDevice PCI IO Device.\r | |
160 | \r | |
161 | **/\r | |
162 | VOID\r | |
163 | InitializePciLoadFile2 (\r | |
164 | IN PCI_IO_DEVICE *PciIoDevice\r | |
165 | )\r | |
166 | {\r | |
167 | PciIoDevice->LoadFile2.LoadFile = LoadFile2;\r | |
168 | }\r | |
169 | \r | |
170 | /**\r | |
171 | Causes the driver to load a specified file.\r | |
172 | \r | |
173 | @param This Indicates a pointer to the calling context.\r | |
174 | @param FilePath The device specific path of the file to load.\r | |
175 | @param BootPolicy Should always be FALSE.\r | |
176 | @param BufferSize On input the size of Buffer in bytes. On output with a return\r | |
177 | code of EFI_SUCCESS, the amount of data transferred to Buffer.\r | |
178 | On output with a return code of EFI_BUFFER_TOO_SMALL,\r | |
179 | the size of Buffer required to retrieve the requested file.\r | |
180 | @param Buffer The memory buffer to transfer the file to. If Buffer is NULL,\r | |
181 | then no the size of the requested file is returned in BufferSize.\r | |
182 | \r | |
183 | @retval EFI_SUCCESS The file was loaded.\r | |
184 | @retval EFI_UNSUPPORTED BootPolicy is TRUE.\r | |
185 | @retval EFI_INVALID_PARAMETER FilePath is not a valid device path, or\r | |
186 | BufferSize is NULL.\r | |
187 | @retval EFI_NOT_FOUND Not found PCI Option Rom on PCI device.\r | |
188 | @retval EFI_DEVICE_ERROR Failed to decompress PCI Option Rom image.\r | |
189 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory entry.\r | |
190 | BufferSize has been updated with the size needed to complete the request.\r | |
191 | \r | |
192 | **/\r | |
193 | EFI_STATUS\r | |
194 | EFIAPI\r | |
195 | LoadFile2 (\r | |
196 | IN EFI_LOAD_FILE2_PROTOCOL *This,\r | |
197 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
198 | IN BOOLEAN BootPolicy,\r | |
199 | IN OUT UINTN *BufferSize,\r | |
200 | IN VOID *Buffer OPTIONAL\r | |
201 | )\r | |
202 | {\r | |
203 | PCI_IO_DEVICE *PciIoDevice;\r | |
204 | \r | |
205 | if (BootPolicy) {\r | |
206 | return EFI_UNSUPPORTED;\r | |
207 | }\r | |
208 | PciIoDevice = PCI_IO_DEVICE_FROM_LOAD_FILE2_THIS (This);\r | |
209 | \r | |
210 | return LocalLoadFile2 (\r | |
211 | PciIoDevice,\r | |
212 | FilePath,\r | |
213 | BufferSize,\r | |
214 | Buffer\r | |
215 | );\r | |
216 | }\r | |
217 | \r | |
218 | /**\r | |
219 | Get Pci device's oprom information.\r | |
220 | \r | |
221 | @param PciIoDevice Input Pci device instance.\r | |
222 | Output Pci device instance with updated OptionRom size.\r | |
223 | \r | |
224 | @retval EFI_NOT_FOUND Pci device has not Option Rom.\r | |
225 | @retval EFI_SUCCESS Pci device has Option Rom.\r | |
226 | \r | |
227 | **/\r | |
228 | EFI_STATUS\r | |
229 | GetOpRomInfo (\r | |
230 | IN OUT PCI_IO_DEVICE *PciIoDevice\r | |
231 | )\r | |
232 | {\r | |
233 | UINT8 RomBarIndex;\r | |
234 | UINT32 AllOnes;\r | |
235 | UINT64 Address;\r | |
236 | EFI_STATUS Status;\r | |
237 | UINT8 Bus;\r | |
238 | UINT8 Device;\r | |
239 | UINT8 Function;\r | |
240 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
241 | \r | |
242 | Bus = PciIoDevice->BusNumber;\r | |
243 | Device = PciIoDevice->DeviceNumber;\r | |
244 | Function = PciIoDevice->FunctionNumber;\r | |
245 | \r | |
246 | PciRootBridgeIo = PciIoDevice->PciRootBridgeIo;\r | |
247 | \r | |
248 | //\r | |
249 | // Offset is 0x30 if is not ppb\r | |
250 | //\r | |
251 | \r | |
252 | //\r | |
253 | // 0x30\r | |
254 | //\r | |
255 | RomBarIndex = PCI_EXPANSION_ROM_BASE;\r | |
256 | \r | |
257 | if (IS_PCI_BRIDGE (&PciIoDevice->Pci)) {\r | |
258 | //\r | |
259 | // If is ppb, 0x38\r | |
260 | //\r | |
261 | RomBarIndex = PCI_BRIDGE_ROMBAR;\r | |
262 | }\r | |
263 | //\r | |
264 | // The bit0 is 0 to prevent the enabling of the Rom address decoder\r | |
265 | //\r | |
266 | AllOnes = 0xfffffffe;\r | |
267 | Address = EFI_PCI_ADDRESS (Bus, Device, Function, RomBarIndex);\r | |
268 | \r | |
269 | Status = PciRootBridgeIo->Pci.Write (\r | |
270 | PciRootBridgeIo,\r | |
271 | EfiPciWidthUint32,\r | |
272 | Address,\r | |
273 | 1,\r | |
274 | &AllOnes\r | |
275 | );\r | |
276 | if (EFI_ERROR (Status)) {\r | |
277 | return EFI_NOT_FOUND;\r | |
278 | }\r | |
279 | \r | |
280 | //\r | |
281 | // Read back\r | |
282 | //\r | |
283 | Status = PciRootBridgeIo->Pci.Read(\r | |
284 | PciRootBridgeIo,\r | |
285 | EfiPciWidthUint32,\r | |
286 | Address,\r | |
287 | 1,\r | |
288 | &AllOnes\r | |
289 | );\r | |
290 | if (EFI_ERROR (Status)) {\r | |
291 | return EFI_NOT_FOUND;\r | |
292 | }\r | |
293 | \r | |
294 | //\r | |
295 | // Bits [1, 10] are reserved\r | |
296 | //\r | |
297 | AllOnes &= 0xFFFFF800;\r | |
298 | if ((AllOnes == 0) || (AllOnes == 0xFFFFF800)) {\r | |
299 | return EFI_NOT_FOUND;\r | |
300 | }\r | |
301 | \r | |
302 | PciIoDevice->RomSize = (~AllOnes) + 1;\r | |
303 | return EFI_SUCCESS;\r | |
304 | }\r | |
305 | \r | |
306 | /**\r | |
307 | Check if the RomImage contains EFI Images.\r | |
308 | \r | |
309 | @param RomImage The ROM address of Image for check.\r | |
310 | @param RomSize Size of ROM for check.\r | |
311 | \r | |
312 | @retval TRUE ROM contain EFI Image.\r | |
313 | @retval FALSE ROM not contain EFI Image.\r | |
314 | \r | |
315 | **/\r | |
316 | BOOLEAN\r | |
317 | ContainEfiImage (\r | |
318 | IN VOID *RomImage,\r | |
319 | IN UINT64 RomSize\r | |
320 | )\r | |
321 | {\r | |
322 | PCI_EXPANSION_ROM_HEADER *RomHeader;\r | |
323 | PCI_DATA_STRUCTURE *RomPcir;\r | |
324 | UINT8 Indicator;\r | |
325 | \r | |
326 | Indicator = 0;\r | |
327 | RomHeader = RomImage;\r | |
328 | if (RomHeader == NULL) {\r | |
329 | return FALSE;\r | |
330 | }\r | |
331 | \r | |
332 | do {\r | |
333 | if (RomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r | |
334 | RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + 512);\r | |
335 | continue;\r | |
336 | }\r | |
337 | \r | |
338 | //\r | |
339 | // The PCI Data Structure must be DWORD aligned.\r | |
340 | //\r | |
341 | if (RomHeader->PcirOffset == 0 ||\r | |
342 | (RomHeader->PcirOffset & 3) != 0 ||\r | |
343 | (UINT8 *) RomHeader + RomHeader->PcirOffset + sizeof (PCI_DATA_STRUCTURE) > (UINT8 *) RomImage + RomSize) {\r | |
344 | break;\r | |
345 | }\r | |
346 | \r | |
347 | RomPcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) RomHeader + RomHeader->PcirOffset);\r | |
348 | if (RomPcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {\r | |
349 | break;\r | |
350 | }\r | |
351 | \r | |
352 | if (RomPcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) {\r | |
353 | return TRUE;\r | |
354 | }\r | |
355 | \r | |
356 | Indicator = RomPcir->Indicator;\r | |
357 | RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + RomPcir->ImageLength * 512);\r | |
358 | } while (((UINT8 *) RomHeader < (UINT8 *) RomImage + RomSize) && ((Indicator & 0x80) == 0x00));\r | |
359 | \r | |
360 | return FALSE;\r | |
361 | }\r | |
362 | \r | |
363 | /**\r | |
364 | Load Option Rom image for specified PCI device.\r | |
365 | \r | |
366 | @param PciDevice Pci device instance.\r | |
367 | @param RomBase Base address of Option Rom.\r | |
368 | \r | |
369 | @retval EFI_OUT_OF_RESOURCES No enough memory to hold image.\r | |
370 | @retval EFI_SUCESS Successfully loaded Option Rom.\r | |
371 | \r | |
372 | **/\r | |
373 | EFI_STATUS\r | |
374 | LoadOpRomImage (\r | |
375 | IN PCI_IO_DEVICE *PciDevice,\r | |
376 | IN UINT64 RomBase\r | |
377 | )\r | |
378 | {\r | |
379 | UINT8 RomBarIndex;\r | |
380 | UINT8 Indicator;\r | |
381 | UINT16 OffsetPcir;\r | |
382 | UINT32 RomBarOffset;\r | |
383 | UINT32 RomBar;\r | |
384 | EFI_STATUS RetStatus;\r | |
385 | BOOLEAN FirstCheck;\r | |
386 | UINT8 *Image;\r | |
387 | PCI_EXPANSION_ROM_HEADER *RomHeader;\r | |
388 | PCI_DATA_STRUCTURE *RomPcir;\r | |
389 | UINT64 RomSize;\r | |
390 | UINT64 RomImageSize;\r | |
391 | UINT32 LegacyImageLength;\r | |
392 | UINT8 *RomInMemory;\r | |
393 | UINT8 CodeType;\r | |
394 | \r | |
395 | RomSize = PciDevice->RomSize;\r | |
396 | \r | |
397 | Indicator = 0;\r | |
398 | RomImageSize = 0;\r | |
399 | RomInMemory = NULL;\r | |
400 | CodeType = 0xFF;\r | |
401 | \r | |
402 | //\r | |
403 | // Get the RomBarIndex\r | |
404 | //\r | |
405 | \r | |
406 | //\r | |
407 | // 0x30\r | |
408 | //\r | |
409 | RomBarIndex = PCI_EXPANSION_ROM_BASE;\r | |
410 | if (IS_PCI_BRIDGE (&(PciDevice->Pci))) {\r | |
411 | //\r | |
412 | // if is ppb\r | |
413 | //\r | |
414 | \r | |
415 | //\r | |
416 | // 0x38\r | |
417 | //\r | |
418 | RomBarIndex = PCI_BRIDGE_ROMBAR;\r | |
419 | }\r | |
420 | //\r | |
421 | // Allocate memory for Rom header and PCIR\r | |
422 | //\r | |
423 | RomHeader = AllocatePool (sizeof (PCI_EXPANSION_ROM_HEADER));\r | |
424 | if (RomHeader == NULL) {\r | |
425 | return EFI_OUT_OF_RESOURCES;\r | |
426 | }\r | |
427 | \r | |
428 | RomPcir = AllocatePool (sizeof (PCI_DATA_STRUCTURE));\r | |
429 | if (RomPcir == NULL) {\r | |
430 | FreePool (RomHeader);\r | |
431 | return EFI_OUT_OF_RESOURCES;\r | |
432 | }\r | |
433 | \r | |
434 | RomBar = (UINT32) RomBase;\r | |
435 | \r | |
436 | //\r | |
437 | // Enable RomBar\r | |
438 | //\r | |
439 | RomDecode (PciDevice, RomBarIndex, RomBar, TRUE);\r | |
440 | \r | |
441 | RomBarOffset = RomBar;\r | |
442 | RetStatus = EFI_NOT_FOUND;\r | |
443 | FirstCheck = TRUE;\r | |
444 | LegacyImageLength = 0;\r | |
445 | \r | |
446 | do {\r | |
447 | PciDevice->PciRootBridgeIo->Mem.Read (\r | |
448 | PciDevice->PciRootBridgeIo,\r | |
449 | EfiPciWidthUint8,\r | |
450 | RomBarOffset,\r | |
451 | sizeof (PCI_EXPANSION_ROM_HEADER),\r | |
452 | (UINT8 *) RomHeader\r | |
453 | );\r | |
454 | \r | |
455 | if (RomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r | |
456 | RomBarOffset = RomBarOffset + 512;\r | |
457 | if (FirstCheck) {\r | |
458 | break;\r | |
459 | } else {\r | |
460 | RomImageSize = RomImageSize + 512;\r | |
461 | continue;\r | |
462 | }\r | |
463 | }\r | |
464 | \r | |
465 | FirstCheck = FALSE;\r | |
466 | OffsetPcir = RomHeader->PcirOffset;\r | |
467 | //\r | |
468 | // If the pointer to the PCI Data Structure is invalid, no further images can be located.\r | |
469 | // The PCI Data Structure must be DWORD aligned.\r | |
470 | //\r | |
471 | if (OffsetPcir == 0 ||\r | |
472 | (OffsetPcir & 3) != 0 ||\r | |
473 | RomImageSize + OffsetPcir + sizeof (PCI_DATA_STRUCTURE) > RomSize) {\r | |
474 | break;\r | |
475 | }\r | |
476 | PciDevice->PciRootBridgeIo->Mem.Read (\r | |
477 | PciDevice->PciRootBridgeIo,\r | |
478 | EfiPciWidthUint8,\r | |
479 | RomBarOffset + OffsetPcir,\r | |
480 | sizeof (PCI_DATA_STRUCTURE),\r | |
481 | (UINT8 *) RomPcir\r | |
482 | );\r | |
483 | //\r | |
484 | // If a valid signature is not present in the PCI Data Structure, no further images can be located.\r | |
485 | //\r | |
486 | if (RomPcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {\r | |
487 | break;\r | |
488 | }\r | |
489 | if (RomImageSize + RomPcir->ImageLength * 512 > RomSize) {\r | |
490 | break;\r | |
491 | }\r | |
492 | if (RomPcir->CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {\r | |
493 | CodeType = PCI_CODE_TYPE_PCAT_IMAGE;\r | |
494 | LegacyImageLength = ((UINT32)((EFI_LEGACY_EXPANSION_ROM_HEADER *)RomHeader)->Size512) * 512;\r | |
495 | }\r | |
496 | Indicator = RomPcir->Indicator;\r | |
497 | RomImageSize = RomImageSize + RomPcir->ImageLength * 512;\r | |
498 | RomBarOffset = RomBarOffset + RomPcir->ImageLength * 512;\r | |
499 | } while (((Indicator & 0x80) == 0x00) && ((RomBarOffset - RomBar) < RomSize));\r | |
500 | \r | |
501 | //\r | |
502 | // Some Legacy Cards do not report the correct ImageLength so used the maximum\r | |
503 | // of the legacy length and the PCIR Image Length\r | |
504 | //\r | |
505 | if (CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {\r | |
506 | RomImageSize = MAX (RomImageSize, LegacyImageLength);\r | |
507 | }\r | |
508 | \r | |
509 | if (RomImageSize > 0) {\r | |
510 | RetStatus = EFI_SUCCESS;\r | |
511 | Image = AllocatePool ((UINT32) RomImageSize);\r | |
512 | if (Image == NULL) {\r | |
513 | RomDecode (PciDevice, RomBarIndex, RomBar, FALSE);\r | |
514 | FreePool (RomHeader);\r | |
515 | FreePool (RomPcir);\r | |
516 | return EFI_OUT_OF_RESOURCES;\r | |
517 | }\r | |
518 | \r | |
519 | //\r | |
520 | // Copy Rom image into memory\r | |
521 | //\r | |
522 | PciDevice->PciRootBridgeIo->Mem.Read (\r | |
523 | PciDevice->PciRootBridgeIo,\r | |
524 | EfiPciWidthUint8,\r | |
525 | RomBar,\r | |
526 | (UINT32) RomImageSize,\r | |
527 | Image\r | |
528 | );\r | |
529 | RomInMemory = Image;\r | |
530 | }\r | |
531 | \r | |
532 | RomDecode (PciDevice, RomBarIndex, RomBar, FALSE);\r | |
533 | \r | |
534 | PciDevice->EmbeddedRom = TRUE;\r | |
535 | PciDevice->PciIo.RomSize = RomImageSize;\r | |
536 | PciDevice->PciIo.RomImage = RomInMemory;\r | |
537 | \r | |
538 | //\r | |
539 | // For OpROM read from PCI device:\r | |
540 | // Add the Rom Image to internal database for later PCI light enumeration\r | |
541 | //\r | |
542 | PciRomAddImageMapping (\r | |
543 | NULL,\r | |
544 | PciDevice->PciRootBridgeIo->SegmentNumber,\r | |
545 | PciDevice->BusNumber,\r | |
546 | PciDevice->DeviceNumber,\r | |
547 | PciDevice->FunctionNumber,\r | |
548 | PciDevice->PciIo.RomImage,\r | |
549 | PciDevice->PciIo.RomSize\r | |
550 | );\r | |
551 | \r | |
552 | //\r | |
553 | // Free allocated memory\r | |
554 | //\r | |
555 | FreePool (RomHeader);\r | |
556 | FreePool (RomPcir);\r | |
557 | \r | |
558 | return RetStatus;\r | |
559 | }\r | |
560 | \r | |
561 | /**\r | |
562 | Enable/Disable Option Rom decode.\r | |
563 | \r | |
564 | @param PciDevice Pci device instance.\r | |
565 | @param RomBarIndex The BAR index of the standard PCI Configuration header to use as the\r | |
566 | base address for resource range. The legal range for this field is 0..5.\r | |
567 | @param RomBar Base address of Option Rom.\r | |
568 | @param Enable Flag for enable/disable decode.\r | |
569 | \r | |
570 | **/\r | |
571 | VOID\r | |
572 | RomDecode (\r | |
573 | IN PCI_IO_DEVICE *PciDevice,\r | |
574 | IN UINT8 RomBarIndex,\r | |
575 | IN UINT32 RomBar,\r | |
576 | IN BOOLEAN Enable\r | |
577 | )\r | |
578 | {\r | |
579 | UINT32 Value32;\r | |
580 | EFI_PCI_IO_PROTOCOL *PciIo;\r | |
581 | \r | |
582 | PciIo = &PciDevice->PciIo;\r | |
583 | if (Enable) {\r | |
584 | \r | |
585 | //\r | |
586 | // set the Rom base address: now is hardcode\r | |
587 | // enable its decoder\r | |
588 | //\r | |
589 | Value32 = RomBar | 0x1;\r | |
590 | PciIo->Pci.Write (\r | |
591 | PciIo,\r | |
592 | (EFI_PCI_IO_PROTOCOL_WIDTH) EfiPciWidthUint32,\r | |
593 | RomBarIndex,\r | |
594 | 1,\r | |
595 | &Value32\r | |
596 | );\r | |
597 | \r | |
598 | //\r | |
599 | // Programe all upstream bridge\r | |
600 | //\r | |
601 | ProgramUpstreamBridgeForRom (PciDevice, RomBar, TRUE);\r | |
602 | \r | |
603 | //\r | |
604 | // Setting the memory space bit in the function's command register\r | |
605 | //\r | |
606 | PCI_ENABLE_COMMAND_REGISTER(PciDevice, EFI_PCI_COMMAND_MEMORY_SPACE);\r | |
607 | \r | |
608 | } else {\r | |
609 | \r | |
610 | //\r | |
611 | // disable command register decode to memory\r | |
612 | //\r | |
613 | PCI_DISABLE_COMMAND_REGISTER(PciDevice, EFI_PCI_COMMAND_MEMORY_SPACE);\r | |
614 | \r | |
615 | //\r | |
616 | // Destroy the programmed bar in all the upstream bridge.\r | |
617 | //\r | |
618 | ProgramUpstreamBridgeForRom (PciDevice, RomBar, FALSE);\r | |
619 | \r | |
620 | //\r | |
621 | // disable rom decode\r | |
622 | //\r | |
623 | Value32 = 0xFFFFFFFE;\r | |
624 | PciIo->Pci.Write (\r | |
625 | PciIo,\r | |
626 | (EFI_PCI_IO_PROTOCOL_WIDTH) EfiPciWidthUint32,\r | |
627 | RomBarIndex,\r | |
628 | 1,\r | |
629 | &Value32\r | |
630 | );\r | |
631 | \r | |
632 | }\r | |
633 | }\r | |
634 | \r | |
635 | /**\r | |
636 | Load and start the Option Rom image.\r | |
637 | \r | |
638 | @param PciDevice Pci device instance.\r | |
639 | \r | |
640 | @retval EFI_SUCCESS Successfully loaded and started PCI Option Rom image.\r | |
641 | @retval EFI_NOT_FOUND Failed to process PCI Option Rom image.\r | |
642 | \r | |
643 | **/\r | |
644 | EFI_STATUS\r | |
645 | ProcessOpRomImage (\r | |
646 | IN PCI_IO_DEVICE *PciDevice\r | |
647 | )\r | |
648 | {\r | |
649 | UINT8 Indicator;\r | |
650 | UINT32 ImageSize;\r | |
651 | VOID *RomBar;\r | |
652 | UINT8 *RomBarOffset;\r | |
653 | EFI_HANDLE ImageHandle;\r | |
654 | EFI_STATUS Status;\r | |
655 | EFI_STATUS RetStatus;\r | |
656 | EFI_PCI_EXPANSION_ROM_HEADER *EfiRomHeader;\r | |
657 | PCI_DATA_STRUCTURE *Pcir;\r | |
658 | EFI_DEVICE_PATH_PROTOCOL *PciOptionRomImageDevicePath;\r | |
659 | MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH EfiOpRomImageNode;\r | |
660 | VOID *Buffer;\r | |
661 | UINTN BufferSize;\r | |
662 | \r | |
663 | Indicator = 0;\r | |
664 | \r | |
665 | //\r | |
666 | // Get the Address of the Option Rom image\r | |
667 | //\r | |
668 | RomBar = PciDevice->PciIo.RomImage;\r | |
669 | RomBarOffset = (UINT8 *) RomBar;\r | |
670 | RetStatus = EFI_NOT_FOUND;\r | |
671 | \r | |
672 | if (RomBar == NULL) {\r | |
673 | return RetStatus;\r | |
674 | }\r | |
675 | ASSERT (((EFI_PCI_EXPANSION_ROM_HEADER *) RomBarOffset)->Signature == PCI_EXPANSION_ROM_HEADER_SIGNATURE);\r | |
676 | \r | |
677 | do {\r | |
678 | EfiRomHeader = (EFI_PCI_EXPANSION_ROM_HEADER *) RomBarOffset;\r | |
679 | if (EfiRomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r | |
680 | RomBarOffset += 512;\r | |
681 | continue;\r | |
682 | }\r | |
683 | \r | |
684 | Pcir = (PCI_DATA_STRUCTURE *) (RomBarOffset + EfiRomHeader->PcirOffset);\r | |
685 | ASSERT (Pcir->Signature == PCI_DATA_STRUCTURE_SIGNATURE);\r | |
686 | ImageSize = (UINT32) (Pcir->ImageLength * 512);\r | |
687 | Indicator = Pcir->Indicator;\r | |
688 | \r | |
689 | //\r | |
690 | // Skip the image if it is not an EFI PCI Option ROM image\r | |
691 | //\r | |
692 | if (Pcir->CodeType != PCI_CODE_TYPE_EFI_IMAGE) {\r | |
693 | goto NextImage;\r | |
694 | }\r | |
695 | \r | |
696 | //\r | |
697 | // Ignore the EFI PCI Option ROM image if it is an EFI application\r | |
698 | //\r | |
699 | if (EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION) {\r | |
700 | goto NextImage;\r | |
701 | }\r | |
702 | \r | |
703 | //\r | |
704 | // Create Pci Option Rom Image device path header\r | |
705 | //\r | |
706 | EfiOpRomImageNode.Header.Type = MEDIA_DEVICE_PATH;\r | |
707 | EfiOpRomImageNode.Header.SubType = MEDIA_RELATIVE_OFFSET_RANGE_DP;\r | |
708 | SetDevicePathNodeLength (&EfiOpRomImageNode.Header, sizeof (EfiOpRomImageNode));\r | |
709 | EfiOpRomImageNode.StartingOffset = (UINTN) RomBarOffset - (UINTN) RomBar;\r | |
710 | EfiOpRomImageNode.EndingOffset = (UINTN) RomBarOffset + ImageSize - 1 - (UINTN) RomBar;\r | |
711 | \r | |
712 | PciOptionRomImageDevicePath = AppendDevicePathNode (PciDevice->DevicePath, &EfiOpRomImageNode.Header);\r | |
713 | ASSERT (PciOptionRomImageDevicePath != NULL);\r | |
714 | \r | |
715 | //\r | |
716 | // load image and start image\r | |
717 | //\r | |
718 | BufferSize = 0;\r | |
719 | Buffer = NULL;\r | |
720 | ImageHandle = NULL;\r | |
721 | \r | |
722 | Status = gBS->LoadImage (\r | |
723 | FALSE,\r | |
724 | gPciBusDriverBinding.DriverBindingHandle,\r | |
725 | PciOptionRomImageDevicePath,\r | |
726 | Buffer,\r | |
727 | BufferSize,\r | |
728 | &ImageHandle\r | |
729 | );\r | |
730 | if (EFI_ERROR (Status)) {\r | |
731 | //\r | |
732 | // Record the Option ROM Image device path when LoadImage fails.\r | |
733 | // PciOverride.GetDriver() will try to look for the Image Handle using the device path later.\r | |
734 | //\r | |
735 | AddDriver (PciDevice, NULL, PciOptionRomImageDevicePath);\r | |
736 | } else {\r | |
737 | Status = gBS->StartImage (ImageHandle, NULL, NULL);\r | |
738 | if (!EFI_ERROR (Status)) {\r | |
739 | //\r | |
740 | // Record the Option ROM Image Handle\r | |
741 | //\r | |
742 | AddDriver (PciDevice, ImageHandle, NULL);\r | |
743 | PciRomAddImageMapping (\r | |
744 | ImageHandle,\r | |
745 | PciDevice->PciRootBridgeIo->SegmentNumber,\r | |
746 | PciDevice->BusNumber,\r | |
747 | PciDevice->DeviceNumber,\r | |
748 | PciDevice->FunctionNumber,\r | |
749 | PciDevice->PciIo.RomImage,\r | |
750 | PciDevice->PciIo.RomSize\r | |
751 | );\r | |
752 | RetStatus = EFI_SUCCESS;\r | |
753 | }\r | |
754 | }\r | |
755 | FreePool (PciOptionRomImageDevicePath);\r | |
756 | \r | |
757 | NextImage:\r | |
758 | RomBarOffset += ImageSize;\r | |
759 | \r | |
760 | } while (((Indicator & 0x80) == 0x00) && (((UINTN) RomBarOffset - (UINTN) RomBar) < PciDevice->RomSize));\r | |
761 | \r | |
762 | return RetStatus;\r | |
763 | }\r | |
764 | \r |