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9060e3ec | 1 | /** @file\r |
2 | PCI Rom supporting funtions implementation for PCI Bus module.\r | |
3 | \r | |
809e2bbf | 4 | Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r |
cd5ebaa0 | 5 | This program and the accompanying materials\r |
9060e3ec | 6 | are licensed and made available under the terms and conditions of the BSD License\r |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "PciBus.h"\r | |
16 | \r | |
17 | /**\r | |
18 | Load the EFI Image from Option ROM\r | |
19 | \r | |
20 | @param PciIoDevice PCI IO device instance.\r | |
21 | @param FilePath The file path of the EFI Image\r | |
22 | @param BufferSize On input the size of Buffer in bytes. On output with a return\r | |
23 | code of EFI_SUCCESS, the amount of data transferred to Buffer.\r | |
24 | On output with a return code of EFI_BUFFER_TOO_SMALL,\r | |
25 | the size of Buffer required to retrieve the requested file.\r | |
26 | @param Buffer The memory buffer to transfer the file to. If Buffer is NULL,\r | |
27 | then no the size of the requested file is returned in BufferSize.\r | |
28 | \r | |
29 | @retval EFI_SUCCESS The file was loaded.\r | |
30 | @retval EFI_INVALID_PARAMETER FilePath is not a valid device path, or\r | |
31 | BufferSize is NULL.\r | |
32 | @retval EFI_NOT_FOUND Not found PCI Option Rom on PCI device.\r | |
33 | @retval EFI_DEVICE_ERROR Failed to decompress PCI Option Rom image.\r | |
34 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory entry.\r | |
35 | BufferSize has been updated with the size needed to complete the request.\r | |
36 | **/\r | |
37 | EFI_STATUS\r | |
38 | LocalLoadFile2 (\r | |
39 | IN PCI_IO_DEVICE *PciIoDevice,\r | |
40 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
41 | IN OUT UINTN *BufferSize,\r | |
42 | IN VOID *Buffer OPTIONAL\r | |
43 | )\r | |
44 | {\r | |
45 | EFI_STATUS Status;\r | |
46 | MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *EfiOpRomImageNode;\r | |
47 | EFI_PCI_EXPANSION_ROM_HEADER *EfiRomHeader;\r | |
48 | PCI_DATA_STRUCTURE *Pcir;\r | |
49 | UINT32 ImageSize;\r | |
50 | UINT8 *ImageBuffer;\r | |
51 | UINT32 ImageLength;\r | |
52 | UINT32 DestinationSize;\r | |
53 | UINT32 ScratchSize;\r | |
54 | VOID *Scratch;\r | |
55 | EFI_DECOMPRESS_PROTOCOL *Decompress;\r | |
94020bb4 | 56 | UINT32 InitializationSize;\r |
9060e3ec | 57 | \r |
58 | EfiOpRomImageNode = (MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH *) FilePath;\r | |
59 | if ((EfiOpRomImageNode == NULL) ||\r | |
60 | (DevicePathType (FilePath) != MEDIA_DEVICE_PATH) ||\r | |
61 | (DevicePathSubType (FilePath) != MEDIA_RELATIVE_OFFSET_RANGE_DP) ||\r | |
62 | (DevicePathNodeLength (FilePath) != sizeof (MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH)) ||\r | |
63 | (!IsDevicePathEnd (NextDevicePathNode (FilePath))) ||\r | |
64 | (EfiOpRomImageNode->StartingOffset > EfiOpRomImageNode->EndingOffset) ||\r | |
65 | (EfiOpRomImageNode->EndingOffset >= PciIoDevice->RomSize) ||\r | |
66 | (BufferSize == NULL)\r | |
67 | ) {\r | |
68 | return EFI_INVALID_PARAMETER;\r | |
69 | }\r | |
70 | \r | |
71 | EfiRomHeader = (EFI_PCI_EXPANSION_ROM_HEADER *) (\r | |
72 | (UINT8 *) PciIoDevice->PciIo.RomImage + EfiOpRomImageNode->StartingOffset\r | |
73 | );\r | |
74 | if (EfiRomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r | |
75 | return EFI_NOT_FOUND;\r | |
76 | }\r | |
77 | \r | |
78 | \r | |
79 | Pcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) EfiRomHeader + EfiRomHeader->PcirOffset);\r | |
94020bb4 | 80 | ASSERT (Pcir->Signature == PCI_DATA_STRUCTURE_SIGNATURE);\r |
9060e3ec | 81 | \r |
82 | if ((Pcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) &&\r | |
83 | (EfiRomHeader->EfiSignature == EFI_PCI_EXPANSION_ROM_HEADER_EFISIGNATURE) &&\r | |
84 | ((EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER) ||\r | |
85 | (EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER)) &&\r | |
86 | (EfiRomHeader->CompressionType <= EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED)\r | |
87 | ) {\r | |
88 | \r | |
94020bb4 | 89 | ImageSize = Pcir->ImageLength * 512;\r |
90 | InitializationSize = (UINT32) EfiRomHeader->InitializationSize * 512;\r | |
91 | if (InitializationSize > ImageSize || EfiRomHeader->EfiImageHeaderOffset >= InitializationSize) {\r | |
92 | return EFI_NOT_FOUND;\r | |
93 | }\r | |
94 | \r | |
9060e3ec | 95 | ImageBuffer = (UINT8 *) EfiRomHeader + EfiRomHeader->EfiImageHeaderOffset;\r |
94020bb4 | 96 | ImageLength = InitializationSize - EfiRomHeader->EfiImageHeaderOffset;\r |
9060e3ec | 97 | \r |
98 | if (EfiRomHeader->CompressionType != EFI_PCI_EXPANSION_ROM_HEADER_COMPRESSED) {\r | |
99 | //\r | |
100 | // Uncompressed: Copy the EFI Image directly to user's buffer\r | |
101 | //\r | |
102 | if (Buffer == NULL || *BufferSize < ImageLength) {\r | |
103 | *BufferSize = ImageLength;\r | |
104 | return EFI_BUFFER_TOO_SMALL;\r | |
105 | }\r | |
106 | \r | |
107 | *BufferSize = ImageLength;\r | |
108 | CopyMem (Buffer, ImageBuffer, ImageLength);\r | |
109 | return EFI_SUCCESS;\r | |
110 | \r | |
111 | } else {\r | |
112 | //\r | |
113 | // Compressed: Uncompress before copying\r | |
114 | //\r | |
115 | Status = gBS->LocateProtocol (&gEfiDecompressProtocolGuid, NULL, (VOID **) &Decompress);\r | |
116 | if (EFI_ERROR (Status)) {\r | |
117 | return EFI_DEVICE_ERROR;\r | |
118 | }\r | |
119 | Status = Decompress->GetInfo (\r | |
120 | Decompress,\r | |
121 | ImageBuffer,\r | |
122 | ImageLength,\r | |
123 | &DestinationSize,\r | |
124 | &ScratchSize\r | |
125 | );\r | |
126 | if (EFI_ERROR (Status)) {\r | |
127 | return EFI_DEVICE_ERROR;\r | |
128 | }\r | |
129 | \r | |
130 | if (Buffer == NULL || *BufferSize < DestinationSize) {\r | |
131 | *BufferSize = DestinationSize;\r | |
132 | return EFI_BUFFER_TOO_SMALL;\r | |
133 | }\r | |
134 | \r | |
135 | *BufferSize = DestinationSize;\r | |
136 | Scratch = AllocatePool (ScratchSize);\r | |
137 | if (Scratch == NULL) {\r | |
138 | return EFI_DEVICE_ERROR;\r | |
139 | }\r | |
140 | \r | |
141 | Status = Decompress->Decompress (\r | |
142 | Decompress,\r | |
143 | ImageBuffer,\r | |
144 | ImageLength,\r | |
145 | Buffer,\r | |
146 | DestinationSize,\r | |
147 | Scratch,\r | |
148 | ScratchSize\r | |
149 | );\r | |
150 | FreePool (Scratch);\r | |
151 | \r | |
152 | if (EFI_ERROR (Status)) {\r | |
153 | return EFI_DEVICE_ERROR;\r | |
154 | }\r | |
155 | return EFI_SUCCESS;\r | |
156 | }\r | |
157 | }\r | |
158 | \r | |
159 | return EFI_NOT_FOUND;\r | |
160 | }\r | |
161 | \r | |
162 | /**\r | |
163 | Initialize a PCI LoadFile2 instance.\r | |
164 | \r | |
165 | @param PciIoDevice PCI IO Device.\r | |
166 | \r | |
167 | **/\r | |
168 | VOID\r | |
169 | InitializePciLoadFile2 (\r | |
170 | IN PCI_IO_DEVICE *PciIoDevice\r | |
171 | )\r | |
172 | {\r | |
173 | PciIoDevice->LoadFile2.LoadFile = LoadFile2;\r | |
174 | }\r | |
175 | \r | |
176 | /**\r | |
177 | Causes the driver to load a specified file.\r | |
178 | \r | |
179 | @param This Indicates a pointer to the calling context.\r | |
180 | @param FilePath The device specific path of the file to load.\r | |
181 | @param BootPolicy Should always be FALSE.\r | |
182 | @param BufferSize On input the size of Buffer in bytes. On output with a return\r | |
183 | code of EFI_SUCCESS, the amount of data transferred to Buffer.\r | |
184 | On output with a return code of EFI_BUFFER_TOO_SMALL,\r | |
185 | the size of Buffer required to retrieve the requested file.\r | |
186 | @param Buffer The memory buffer to transfer the file to. If Buffer is NULL,\r | |
187 | then no the size of the requested file is returned in BufferSize.\r | |
188 | \r | |
189 | @retval EFI_SUCCESS The file was loaded.\r | |
190 | @retval EFI_UNSUPPORTED BootPolicy is TRUE.\r | |
191 | @retval EFI_INVALID_PARAMETER FilePath is not a valid device path, or\r | |
192 | BufferSize is NULL.\r | |
193 | @retval EFI_NOT_FOUND Not found PCI Option Rom on PCI device.\r | |
194 | @retval EFI_DEVICE_ERROR Failed to decompress PCI Option Rom image.\r | |
195 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory entry.\r | |
196 | BufferSize has been updated with the size needed to complete the request.\r | |
197 | \r | |
198 | **/\r | |
199 | EFI_STATUS\r | |
200 | EFIAPI\r | |
201 | LoadFile2 (\r | |
202 | IN EFI_LOAD_FILE2_PROTOCOL *This,\r | |
203 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
204 | IN BOOLEAN BootPolicy,\r | |
205 | IN OUT UINTN *BufferSize,\r | |
206 | IN VOID *Buffer OPTIONAL\r | |
207 | )\r | |
208 | {\r | |
209 | PCI_IO_DEVICE *PciIoDevice;\r | |
210 | \r | |
211 | if (BootPolicy) {\r | |
212 | return EFI_UNSUPPORTED;\r | |
213 | }\r | |
214 | PciIoDevice = PCI_IO_DEVICE_FROM_LOAD_FILE2_THIS (This);\r | |
215 | \r | |
216 | return LocalLoadFile2 (\r | |
217 | PciIoDevice,\r | |
218 | FilePath,\r | |
219 | BufferSize,\r | |
220 | Buffer\r | |
221 | );\r | |
222 | }\r | |
223 | \r | |
224 | /**\r | |
225 | Get Pci device's oprom information.\r | |
226 | \r | |
227 | @param PciIoDevice Input Pci device instance.\r | |
228 | Output Pci device instance with updated OptionRom size.\r | |
229 | \r | |
230 | @retval EFI_NOT_FOUND Pci device has not Option Rom.\r | |
231 | @retval EFI_SUCCESS Pci device has Option Rom.\r | |
232 | \r | |
233 | **/\r | |
234 | EFI_STATUS\r | |
235 | GetOpRomInfo (\r | |
236 | IN OUT PCI_IO_DEVICE *PciIoDevice\r | |
237 | )\r | |
238 | {\r | |
239 | UINT8 RomBarIndex;\r | |
240 | UINT32 AllOnes;\r | |
241 | UINT64 Address;\r | |
242 | EFI_STATUS Status;\r | |
243 | UINT8 Bus;\r | |
244 | UINT8 Device;\r | |
245 | UINT8 Function;\r | |
246 | EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r | |
247 | \r | |
248 | Bus = PciIoDevice->BusNumber;\r | |
249 | Device = PciIoDevice->DeviceNumber;\r | |
250 | Function = PciIoDevice->FunctionNumber;\r | |
251 | \r | |
252 | PciRootBridgeIo = PciIoDevice->PciRootBridgeIo;\r | |
253 | \r | |
254 | //\r | |
255 | // Offset is 0x30 if is not ppb\r | |
256 | //\r | |
257 | \r | |
258 | //\r | |
259 | // 0x30\r | |
260 | //\r | |
261 | RomBarIndex = PCI_EXPANSION_ROM_BASE;\r | |
262 | \r | |
263 | if (IS_PCI_BRIDGE (&PciIoDevice->Pci)) {\r | |
264 | //\r | |
265 | // If is ppb, 0x38\r | |
266 | //\r | |
267 | RomBarIndex = PCI_BRIDGE_ROMBAR;\r | |
268 | }\r | |
269 | //\r | |
270 | // The bit0 is 0 to prevent the enabling of the Rom address decoder\r | |
271 | //\r | |
272 | AllOnes = 0xfffffffe;\r | |
273 | Address = EFI_PCI_ADDRESS (Bus, Device, Function, RomBarIndex);\r | |
274 | \r | |
275 | Status = PciRootBridgeIo->Pci.Write (\r | |
276 | PciRootBridgeIo,\r | |
277 | EfiPciWidthUint32,\r | |
278 | Address,\r | |
279 | 1,\r | |
280 | &AllOnes\r | |
281 | );\r | |
282 | if (EFI_ERROR (Status)) {\r | |
283 | return EFI_NOT_FOUND;\r | |
284 | }\r | |
285 | \r | |
286 | //\r | |
287 | // Read back\r | |
288 | //\r | |
289 | Status = PciRootBridgeIo->Pci.Read(\r | |
290 | PciRootBridgeIo,\r | |
291 | EfiPciWidthUint32,\r | |
292 | Address,\r | |
293 | 1,\r | |
294 | &AllOnes\r | |
295 | );\r | |
296 | if (EFI_ERROR (Status)) {\r | |
297 | return EFI_NOT_FOUND;\r | |
298 | }\r | |
299 | \r | |
300 | //\r | |
301 | // Bits [1, 10] are reserved\r | |
302 | //\r | |
303 | AllOnes &= 0xFFFFF800;\r | |
304 | if ((AllOnes == 0) || (AllOnes == 0xFFFFF800)) {\r | |
305 | return EFI_NOT_FOUND;\r | |
306 | }\r | |
307 | \r | |
16f69227 | 308 | PciIoDevice->RomSize = (~AllOnes) + 1;\r |
9060e3ec | 309 | return EFI_SUCCESS;\r |
310 | }\r | |
311 | \r | |
483d0d85 RN |
312 | /**\r |
313 | Check if the RomImage contains EFI Images.\r | |
314 | \r | |
315 | @param RomImage The ROM address of Image for check.\r | |
316 | @param RomSize Size of ROM for check.\r | |
317 | \r | |
318 | @retval TRUE ROM contain EFI Image.\r | |
319 | @retval FALSE ROM not contain EFI Image.\r | |
320 | \r | |
321 | **/\r | |
322 | BOOLEAN\r | |
323 | ContainEfiImage (\r | |
324 | IN VOID *RomImage,\r | |
325 | IN UINT64 RomSize\r | |
326 | )\r | |
327 | {\r | |
328 | PCI_EXPANSION_ROM_HEADER *RomHeader;\r | |
329 | PCI_DATA_STRUCTURE *RomPcir;\r | |
330 | UINT8 Indicator;\r | |
331 | \r | |
332 | Indicator = 0;\r | |
333 | RomHeader = RomImage;\r | |
334 | if (RomHeader == NULL) {\r | |
335 | return FALSE;\r | |
336 | }\r | |
337 | \r | |
338 | do {\r | |
339 | if (RomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r | |
340 | RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + 512);\r | |
341 | continue;\r | |
342 | }\r | |
343 | \r | |
344 | //\r | |
345 | // The PCI Data Structure must be DWORD aligned. \r | |
346 | //\r | |
347 | if (RomHeader->PcirOffset == 0 ||\r | |
348 | (RomHeader->PcirOffset & 3) != 0 ||\r | |
349 | (UINT8 *) RomHeader + RomHeader->PcirOffset + sizeof (PCI_DATA_STRUCTURE) > (UINT8 *) RomImage + RomSize) {\r | |
350 | break;\r | |
351 | }\r | |
352 | \r | |
353 | RomPcir = (PCI_DATA_STRUCTURE *) ((UINT8 *) RomHeader + RomHeader->PcirOffset);\r | |
354 | if (RomPcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {\r | |
355 | break;\r | |
356 | }\r | |
357 | \r | |
358 | if (RomPcir->CodeType == PCI_CODE_TYPE_EFI_IMAGE) {\r | |
359 | return TRUE;\r | |
360 | }\r | |
361 | \r | |
362 | Indicator = RomPcir->Indicator;\r | |
363 | RomHeader = (PCI_EXPANSION_ROM_HEADER *) ((UINT8 *) RomHeader + RomPcir->ImageLength * 512);\r | |
364 | } while (((UINT8 *) RomHeader < (UINT8 *) RomImage + RomSize) && ((Indicator & 0x80) == 0x00));\r | |
365 | \r | |
366 | return FALSE;\r | |
367 | }\r | |
368 | \r | |
9060e3ec | 369 | /**\r |
370 | Load Option Rom image for specified PCI device.\r | |
371 | \r | |
372 | @param PciDevice Pci device instance.\r | |
373 | @param RomBase Base address of Option Rom.\r | |
374 | \r | |
375 | @retval EFI_OUT_OF_RESOURCES No enough memory to hold image.\r | |
376 | @retval EFI_SUCESS Successfully loaded Option Rom.\r | |
377 | \r | |
378 | **/\r | |
379 | EFI_STATUS\r | |
380 | LoadOpRomImage (\r | |
381 | IN PCI_IO_DEVICE *PciDevice,\r | |
382 | IN UINT64 RomBase\r | |
383 | )\r | |
384 | {\r | |
385 | UINT8 RomBarIndex;\r | |
386 | UINT8 Indicator;\r | |
387 | UINT16 OffsetPcir;\r | |
388 | UINT32 RomBarOffset;\r | |
389 | UINT32 RomBar;\r | |
390 | EFI_STATUS RetStatus;\r | |
391 | BOOLEAN FirstCheck;\r | |
392 | UINT8 *Image;\r | |
393 | PCI_EXPANSION_ROM_HEADER *RomHeader;\r | |
394 | PCI_DATA_STRUCTURE *RomPcir;\r | |
395 | UINT64 RomSize;\r | |
396 | UINT64 RomImageSize;\r | |
94020bb4 | 397 | UINT32 LegacyImageLength;\r |
9060e3ec | 398 | UINT8 *RomInMemory;\r |
399 | UINT8 CodeType;\r | |
400 | \r | |
401 | RomSize = PciDevice->RomSize;\r | |
402 | \r | |
403 | Indicator = 0;\r | |
404 | RomImageSize = 0;\r | |
405 | RomInMemory = NULL;\r | |
406 | CodeType = 0xFF;\r | |
407 | \r | |
408 | //\r | |
409 | // Get the RomBarIndex\r | |
410 | //\r | |
411 | \r | |
412 | //\r | |
413 | // 0x30\r | |
414 | //\r | |
415 | RomBarIndex = PCI_EXPANSION_ROM_BASE;\r | |
416 | if (IS_PCI_BRIDGE (&(PciDevice->Pci))) {\r | |
417 | //\r | |
418 | // if is ppb\r | |
419 | //\r | |
420 | \r | |
421 | //\r | |
422 | // 0x38\r | |
423 | //\r | |
424 | RomBarIndex = PCI_BRIDGE_ROMBAR;\r | |
425 | }\r | |
426 | //\r | |
427 | // Allocate memory for Rom header and PCIR\r | |
428 | //\r | |
429 | RomHeader = AllocatePool (sizeof (PCI_EXPANSION_ROM_HEADER));\r | |
430 | if (RomHeader == NULL) {\r | |
431 | return EFI_OUT_OF_RESOURCES;\r | |
432 | }\r | |
433 | \r | |
434 | RomPcir = AllocatePool (sizeof (PCI_DATA_STRUCTURE));\r | |
435 | if (RomPcir == NULL) {\r | |
436 | FreePool (RomHeader);\r | |
437 | return EFI_OUT_OF_RESOURCES;\r | |
438 | }\r | |
439 | \r | |
440 | RomBar = (UINT32) RomBase;\r | |
441 | \r | |
442 | //\r | |
443 | // Enable RomBar\r | |
444 | //\r | |
445 | RomDecode (PciDevice, RomBarIndex, RomBar, TRUE);\r | |
446 | \r | |
447 | RomBarOffset = RomBar;\r | |
448 | RetStatus = EFI_NOT_FOUND;\r | |
449 | FirstCheck = TRUE;\r | |
94020bb4 | 450 | LegacyImageLength = 0;\r |
9060e3ec | 451 | \r |
452 | do {\r | |
453 | PciDevice->PciRootBridgeIo->Mem.Read (\r | |
454 | PciDevice->PciRootBridgeIo,\r | |
455 | EfiPciWidthUint8,\r | |
456 | RomBarOffset,\r | |
457 | sizeof (PCI_EXPANSION_ROM_HEADER),\r | |
458 | (UINT8 *) RomHeader\r | |
459 | );\r | |
460 | \r | |
461 | if (RomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r | |
462 | RomBarOffset = RomBarOffset + 512;\r | |
463 | if (FirstCheck) {\r | |
464 | break;\r | |
465 | } else {\r | |
466 | RomImageSize = RomImageSize + 512;\r | |
467 | continue;\r | |
468 | }\r | |
469 | }\r | |
470 | \r | |
471 | FirstCheck = FALSE;\r | |
472 | OffsetPcir = RomHeader->PcirOffset;\r | |
94020bb4 | 473 | //\r |
474 | // If the pointer to the PCI Data Structure is invalid, no further images can be located. \r | |
475 | // The PCI Data Structure must be DWORD aligned. \r | |
476 | //\r | |
477 | if (OffsetPcir == 0 ||\r | |
478 | (OffsetPcir & 3) != 0 ||\r | |
479 | RomImageSize + OffsetPcir + sizeof (PCI_DATA_STRUCTURE) > RomSize) {\r | |
480 | break;\r | |
481 | }\r | |
9060e3ec | 482 | PciDevice->PciRootBridgeIo->Mem.Read (\r |
483 | PciDevice->PciRootBridgeIo,\r | |
484 | EfiPciWidthUint8,\r | |
485 | RomBarOffset + OffsetPcir,\r | |
486 | sizeof (PCI_DATA_STRUCTURE),\r | |
487 | (UINT8 *) RomPcir\r | |
488 | );\r | |
94020bb4 | 489 | //\r |
490 | // If a valid signature is not present in the PCI Data Structure, no further images can be located.\r | |
491 | //\r | |
492 | if (RomPcir->Signature != PCI_DATA_STRUCTURE_SIGNATURE) {\r | |
493 | break;\r | |
494 | }\r | |
495 | if (RomImageSize + RomPcir->ImageLength * 512 > RomSize) {\r | |
496 | break;\r | |
497 | }\r | |
9060e3ec | 498 | if (RomPcir->CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {\r |
499 | CodeType = PCI_CODE_TYPE_PCAT_IMAGE;\r | |
94020bb4 | 500 | LegacyImageLength = ((UINT32)((EFI_LEGACY_EXPANSION_ROM_HEADER *)RomHeader)->Size512) * 512;\r |
9060e3ec | 501 | }\r |
502 | Indicator = RomPcir->Indicator;\r | |
503 | RomImageSize = RomImageSize + RomPcir->ImageLength * 512;\r | |
504 | RomBarOffset = RomBarOffset + RomPcir->ImageLength * 512;\r | |
505 | } while (((Indicator & 0x80) == 0x00) && ((RomBarOffset - RomBar) < RomSize));\r | |
506 | \r | |
507 | //\r | |
508 | // Some Legacy Cards do not report the correct ImageLength so used the maximum\r | |
509 | // of the legacy length and the PCIR Image Length\r | |
510 | //\r | |
511 | if (CodeType == PCI_CODE_TYPE_PCAT_IMAGE) {\r | |
94020bb4 | 512 | RomImageSize = MAX (RomImageSize, LegacyImageLength);\r |
9060e3ec | 513 | }\r |
514 | \r | |
515 | if (RomImageSize > 0) {\r | |
516 | RetStatus = EFI_SUCCESS;\r | |
517 | Image = AllocatePool ((UINT32) RomImageSize);\r | |
518 | if (Image == NULL) {\r | |
519 | RomDecode (PciDevice, RomBarIndex, RomBar, FALSE);\r | |
520 | FreePool (RomHeader);\r | |
521 | FreePool (RomPcir);\r | |
522 | return EFI_OUT_OF_RESOURCES;\r | |
523 | }\r | |
524 | \r | |
525 | //\r | |
526 | // Copy Rom image into memory\r | |
527 | //\r | |
528 | PciDevice->PciRootBridgeIo->Mem.Read (\r | |
529 | PciDevice->PciRootBridgeIo,\r | |
530 | EfiPciWidthUint8,\r | |
531 | RomBar,\r | |
532 | (UINT32) RomImageSize,\r | |
533 | Image\r | |
534 | );\r | |
535 | RomInMemory = Image;\r | |
536 | }\r | |
537 | \r | |
538 | RomDecode (PciDevice, RomBarIndex, RomBar, FALSE);\r | |
539 | \r | |
4ed4e19c | 540 | PciDevice->EmbeddedRom = TRUE;\r |
9060e3ec | 541 | PciDevice->PciIo.RomSize = RomImageSize;\r |
542 | PciDevice->PciIo.RomImage = RomInMemory;\r | |
543 | \r | |
544 | //\r | |
545 | // For OpROM read from PCI device:\r | |
546 | // Add the Rom Image to internal database for later PCI light enumeration\r | |
547 | //\r | |
548 | PciRomAddImageMapping (\r | |
549 | NULL,\r | |
550 | PciDevice->PciRootBridgeIo->SegmentNumber,\r | |
551 | PciDevice->BusNumber,\r | |
552 | PciDevice->DeviceNumber,\r | |
553 | PciDevice->FunctionNumber,\r | |
554 | (UINT64) (UINTN) PciDevice->PciIo.RomImage,\r | |
555 | PciDevice->PciIo.RomSize\r | |
556 | );\r | |
557 | \r | |
558 | //\r | |
559 | // Free allocated memory\r | |
560 | //\r | |
561 | FreePool (RomHeader);\r | |
562 | FreePool (RomPcir);\r | |
563 | \r | |
564 | return RetStatus;\r | |
565 | }\r | |
566 | \r | |
567 | /**\r | |
568 | Enable/Disable Option Rom decode.\r | |
569 | \r | |
570 | @param PciDevice Pci device instance.\r | |
571 | @param RomBarIndex The BAR index of the standard PCI Configuration header to use as the\r | |
572 | base address for resource range. The legal range for this field is 0..5.\r | |
573 | @param RomBar Base address of Option Rom.\r | |
574 | @param Enable Flag for enable/disable decode.\r | |
575 | \r | |
576 | **/\r | |
577 | VOID\r | |
578 | RomDecode (\r | |
579 | IN PCI_IO_DEVICE *PciDevice,\r | |
580 | IN UINT8 RomBarIndex,\r | |
581 | IN UINT32 RomBar,\r | |
582 | IN BOOLEAN Enable\r | |
583 | )\r | |
584 | {\r | |
585 | UINT32 Value32;\r | |
586 | UINT32 Offset;\r | |
6989af71 | 587 | UINT32 OffsetMax;\r |
9060e3ec | 588 | EFI_PCI_IO_PROTOCOL *PciIo;\r |
589 | \r | |
590 | PciIo = &PciDevice->PciIo;\r | |
591 | if (Enable) {\r | |
592 | //\r | |
593 | // Clear all bars\r | |
594 | //\r | |
6989af71 RN |
595 | OffsetMax = 0x24;\r |
596 | if (IS_PCI_BRIDGE(&PciDevice->Pci)) {\r | |
597 | OffsetMax = 0x14;\r | |
598 | }\r | |
599 | \r | |
600 | for (Offset = 0x10; Offset <= OffsetMax; Offset += sizeof (UINT32)) {\r | |
9060e3ec | 601 | PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, Offset, 1, &gAllZero);\r |
602 | }\r | |
603 | \r | |
604 | //\r | |
605 | // set the Rom base address: now is hardcode\r | |
606 | // enable its decoder\r | |
607 | //\r | |
608 | Value32 = RomBar | 0x1;\r | |
609 | PciIo->Pci.Write (\r | |
610 | PciIo,\r | |
611 | (EFI_PCI_IO_PROTOCOL_WIDTH) EfiPciWidthUint32,\r | |
612 | RomBarIndex,\r | |
613 | 1,\r | |
614 | &Value32\r | |
615 | );\r | |
616 | \r | |
617 | //\r | |
618 | // Programe all upstream bridge\r | |
619 | //\r | |
620 | ProgrameUpstreamBridgeForRom(PciDevice, RomBar, TRUE);\r | |
621 | \r | |
622 | //\r | |
623 | // Setting the memory space bit in the function's command register\r | |
624 | //\r | |
625 | PCI_ENABLE_COMMAND_REGISTER(PciDevice, EFI_PCI_COMMAND_MEMORY_SPACE);\r | |
626 | \r | |
627 | } else {\r | |
628 | \r | |
629 | //\r | |
630 | // disable command register decode to memory\r | |
631 | //\r | |
632 | PCI_DISABLE_COMMAND_REGISTER(PciDevice, EFI_PCI_COMMAND_MEMORY_SPACE);\r | |
633 | \r | |
634 | //\r | |
635 | // Destroy the programmed bar in all the upstream bridge.\r | |
636 | //\r | |
637 | ProgrameUpstreamBridgeForRom(PciDevice, RomBar, FALSE);\r | |
638 | \r | |
639 | //\r | |
640 | // disable rom decode\r | |
641 | //\r | |
642 | Value32 = 0xFFFFFFFE;\r | |
643 | PciIo->Pci.Write (\r | |
644 | PciIo,\r | |
645 | (EFI_PCI_IO_PROTOCOL_WIDTH) EfiPciWidthUint32,\r | |
646 | RomBarIndex,\r | |
647 | 1,\r | |
648 | &Value32\r | |
649 | );\r | |
650 | \r | |
651 | }\r | |
652 | }\r | |
653 | \r | |
654 | /**\r | |
655 | Load and start the Option Rom image.\r | |
656 | \r | |
657 | @param PciDevice Pci device instance.\r | |
658 | \r | |
659 | @retval EFI_SUCCESS Successfully loaded and started PCI Option Rom image.\r | |
660 | @retval EFI_NOT_FOUND Failed to process PCI Option Rom image.\r | |
661 | \r | |
662 | **/\r | |
663 | EFI_STATUS\r | |
664 | ProcessOpRomImage (\r | |
665 | IN PCI_IO_DEVICE *PciDevice\r | |
666 | )\r | |
667 | {\r | |
668 | UINT8 Indicator;\r | |
669 | UINT32 ImageSize;\r | |
670 | VOID *RomBar;\r | |
671 | UINT8 *RomBarOffset;\r | |
672 | EFI_HANDLE ImageHandle;\r | |
673 | EFI_STATUS Status;\r | |
674 | EFI_STATUS RetStatus;\r | |
9060e3ec | 675 | EFI_PCI_EXPANSION_ROM_HEADER *EfiRomHeader;\r |
676 | PCI_DATA_STRUCTURE *Pcir;\r | |
677 | EFI_DEVICE_PATH_PROTOCOL *PciOptionRomImageDevicePath;\r | |
678 | MEDIA_RELATIVE_OFFSET_RANGE_DEVICE_PATH EfiOpRomImageNode;\r | |
679 | VOID *Buffer;\r | |
680 | UINTN BufferSize;\r | |
681 | \r | |
682 | Indicator = 0;\r | |
683 | \r | |
684 | //\r | |
685 | // Get the Address of the Option Rom image\r | |
686 | //\r | |
687 | RomBar = PciDevice->PciIo.RomImage;\r | |
688 | RomBarOffset = (UINT8 *) RomBar;\r | |
689 | RetStatus = EFI_NOT_FOUND;\r | |
94020bb4 | 690 | \r |
691 | if (RomBar == NULL) {\r | |
692 | return RetStatus;\r | |
693 | }\r | |
694 | ASSERT (((EFI_PCI_EXPANSION_ROM_HEADER *) RomBarOffset)->Signature == PCI_EXPANSION_ROM_HEADER_SIGNATURE);\r | |
9060e3ec | 695 | \r |
696 | do {\r | |
697 | EfiRomHeader = (EFI_PCI_EXPANSION_ROM_HEADER *) RomBarOffset;\r | |
698 | if (EfiRomHeader->Signature != PCI_EXPANSION_ROM_HEADER_SIGNATURE) {\r | |
699 | RomBarOffset += 512;\r | |
94020bb4 | 700 | continue;\r |
9060e3ec | 701 | }\r |
702 | \r | |
9060e3ec | 703 | Pcir = (PCI_DATA_STRUCTURE *) (RomBarOffset + EfiRomHeader->PcirOffset);\r |
94020bb4 | 704 | ASSERT (Pcir->Signature == PCI_DATA_STRUCTURE_SIGNATURE);\r |
9060e3ec | 705 | ImageSize = (UINT32) (Pcir->ImageLength * 512);\r |
706 | Indicator = Pcir->Indicator;\r | |
707 | \r | |
a93e23f9 | 708 | //\r |
709 | // Skip the image if it is not an EFI PCI Option ROM image\r | |
710 | //\r | |
711 | if (Pcir->CodeType != PCI_CODE_TYPE_EFI_IMAGE) {\r | |
712 | goto NextImage;\r | |
713 | }\r | |
714 | \r | |
715 | //\r | |
716 | // Skip the EFI PCI Option ROM image if its machine type is not supported\r | |
717 | //\r | |
718 | if (!EFI_IMAGE_MACHINE_TYPE_SUPPORTED (EfiRomHeader->EfiMachineType)) {\r | |
719 | goto NextImage;\r | |
720 | }\r | |
721 | \r | |
722 | //\r | |
723 | // Ignore the EFI PCI Option ROM image if it is an EFI application\r | |
724 | //\r | |
725 | if (EfiRomHeader->EfiSubsystem == EFI_IMAGE_SUBSYSTEM_EFI_APPLICATION) {\r | |
726 | goto NextImage;\r | |
727 | }\r | |
728 | \r | |
9060e3ec | 729 | //\r |
730 | // Create Pci Option Rom Image device path header\r | |
731 | //\r | |
732 | EfiOpRomImageNode.Header.Type = MEDIA_DEVICE_PATH;\r | |
733 | EfiOpRomImageNode.Header.SubType = MEDIA_RELATIVE_OFFSET_RANGE_DP;\r | |
734 | SetDevicePathNodeLength (&EfiOpRomImageNode.Header, sizeof (EfiOpRomImageNode));\r | |
735 | EfiOpRomImageNode.StartingOffset = (UINTN) RomBarOffset - (UINTN) RomBar;\r | |
736 | EfiOpRomImageNode.EndingOffset = (UINTN) RomBarOffset + ImageSize - 1 - (UINTN) RomBar;\r | |
737 | \r | |
738 | PciOptionRomImageDevicePath = AppendDevicePathNode (PciDevice->DevicePath, &EfiOpRomImageNode.Header);\r | |
739 | ASSERT (PciOptionRomImageDevicePath != NULL);\r | |
740 | \r | |
741 | //\r | |
742 | // load image and start image\r | |
743 | //\r | |
744 | BufferSize = 0;\r | |
745 | Buffer = NULL;\r | |
9060e3ec | 746 | ImageHandle = NULL;\r |
747 | \r | |
a93e23f9 | 748 | Status = gBS->LoadImage (\r |
749 | FALSE,\r | |
750 | gPciBusDriverBinding.DriverBindingHandle,\r | |
751 | PciOptionRomImageDevicePath,\r | |
752 | Buffer,\r | |
753 | BufferSize,\r | |
754 | &ImageHandle\r | |
755 | );\r | |
9060e3ec | 756 | \r |
757 | FreePool (PciOptionRomImageDevicePath);\r | |
758 | \r | |
759 | if (!EFI_ERROR (Status)) {\r | |
760 | Status = gBS->StartImage (ImageHandle, NULL, NULL);\r | |
761 | if (!EFI_ERROR (Status)) {\r | |
762 | AddDriver (PciDevice, ImageHandle);\r | |
763 | PciRomAddImageMapping (\r | |
764 | ImageHandle,\r | |
765 | PciDevice->PciRootBridgeIo->SegmentNumber,\r | |
766 | PciDevice->BusNumber,\r | |
767 | PciDevice->DeviceNumber,\r | |
768 | PciDevice->FunctionNumber,\r | |
769 | (UINT64) (UINTN) PciDevice->PciIo.RomImage,\r | |
770 | PciDevice->PciIo.RomSize\r | |
771 | );\r | |
772 | RetStatus = EFI_SUCCESS;\r | |
773 | }\r | |
774 | }\r | |
775 | \r | |
a93e23f9 | 776 | NextImage:\r |
9060e3ec | 777 | RomBarOffset += ImageSize;\r |
778 | \r | |
809e2bbf | 779 | } while (((Indicator & 0x80) == 0x00) && (((UINTN) RomBarOffset - (UINTN) RomBar) < PciDevice->RomSize));\r |
9060e3ec | 780 | \r |
781 | return RetStatus;\r | |
782 | }\r | |
783 | \r |