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04af8bf2 DG |
1 | /** @file\r |
2 | This library will parse the coreboot table in memory and extract those required\r | |
3 | information.\r | |
4 | \r | |
422e5d2f | 5 | Copyright (c) 2014 - 2021, Intel Corporation. All rights reserved.<BR>\r |
04af8bf2 DG |
6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
7 | \r | |
8 | **/\r | |
9 | \r | |
10 | #include <Uefi/UefiBaseType.h>\r | |
11 | #include <Library/BaseLib.h>\r | |
12 | #include <Library/BaseMemoryLib.h>\r | |
13 | #include <Library/DebugLib.h>\r | |
14 | #include <Library/PcdLib.h>\r | |
15 | #include <Library/IoLib.h>\r | |
16 | #include <Library/BlParseLib.h>\r | |
17 | #include <IndustryStandard/Acpi.h>\r | |
18 | #include <Coreboot.h>\r | |
19 | \r | |
20 | \r | |
21 | /**\r | |
22 | Convert a packed value from cbuint64 to a UINT64 value.\r | |
23 | \r | |
24 | @param val The pointer to packed data.\r | |
25 | \r | |
26 | @return the UNIT64 value after conversion.\r | |
27 | \r | |
28 | **/\r | |
29 | UINT64\r | |
30 | cb_unpack64 (\r | |
31 | IN struct cbuint64 val\r | |
32 | )\r | |
33 | {\r | |
34 | return LShiftU64 (val.hi, 32) | val.lo;\r | |
35 | }\r | |
36 | \r | |
37 | \r | |
38 | /**\r | |
39 | Returns the sum of all elements in a buffer of 16-bit values. During\r | |
40 | calculation, the carry bits are also been added.\r | |
41 | \r | |
42 | @param Buffer The pointer to the buffer to carry out the sum operation.\r | |
43 | @param Length The size, in bytes, of Buffer.\r | |
44 | \r | |
45 | @return Sum The sum of Buffer with carry bits included during additions.\r | |
46 | \r | |
47 | **/\r | |
48 | UINT16\r | |
49 | CbCheckSum16 (\r | |
50 | IN UINT16 *Buffer,\r | |
51 | IN UINTN Length\r | |
52 | )\r | |
53 | {\r | |
54 | UINT32 Sum;\r | |
55 | UINT32 TmpValue;\r | |
56 | UINTN Idx;\r | |
57 | UINT8 *TmpPtr;\r | |
58 | \r | |
59 | Sum = 0;\r | |
60 | TmpPtr = (UINT8 *)Buffer;\r | |
61 | for(Idx = 0; Idx < Length; Idx++) {\r | |
62 | TmpValue = TmpPtr[Idx];\r | |
63 | if (Idx % 2 == 1) {\r | |
64 | TmpValue <<= 8;\r | |
65 | }\r | |
66 | \r | |
67 | Sum += TmpValue;\r | |
68 | \r | |
69 | // Wrap\r | |
70 | if (Sum >= 0x10000) {\r | |
71 | Sum = (Sum + (Sum >> 16)) & 0xFFFF;\r | |
72 | }\r | |
73 | }\r | |
74 | \r | |
75 | return (UINT16)((~Sum) & 0xFFFF);\r | |
76 | }\r | |
77 | \r | |
78 | \r | |
79 | /**\r | |
80 | Check the coreboot table if it is valid.\r | |
81 | \r | |
82 | @param Header Pointer to coreboot table\r | |
83 | \r | |
84 | @retval TRUE The coreboot table is valid.\r | |
85 | @retval Others The coreboot table is not valid.\r | |
86 | \r | |
87 | **/\r | |
88 | BOOLEAN\r | |
89 | IsValidCbTable (\r | |
90 | IN struct cb_header *Header\r | |
91 | )\r | |
92 | {\r | |
93 | UINT16 CheckSum;\r | |
94 | \r | |
95 | if ((Header == NULL) || (Header->table_bytes == 0)) {\r | |
96 | return FALSE;\r | |
97 | }\r | |
98 | \r | |
99 | if (Header->signature != CB_HEADER_SIGNATURE) {\r | |
100 | return FALSE;\r | |
101 | }\r | |
102 | \r | |
103 | //\r | |
104 | // Check the checksum of the coreboot table header\r | |
105 | //\r | |
106 | CheckSum = CbCheckSum16 ((UINT16 *)Header, sizeof (*Header));\r | |
107 | if (CheckSum != 0) {\r | |
108 | DEBUG ((DEBUG_ERROR, "Invalid coreboot table header checksum\n"));\r | |
109 | return FALSE;\r | |
110 | }\r | |
111 | \r | |
112 | CheckSum = CbCheckSum16 ((UINT16 *)((UINT8 *)Header + sizeof (*Header)), Header->table_bytes);\r | |
113 | if (CheckSum != Header->table_checksum) {\r | |
114 | DEBUG ((DEBUG_ERROR, "Incorrect checksum of all the coreboot table entries\n"));\r | |
115 | return FALSE;\r | |
116 | }\r | |
117 | \r | |
118 | return TRUE;\r | |
119 | }\r | |
120 | \r | |
121 | \r | |
122 | /**\r | |
123 | This function retrieves the parameter base address from boot loader.\r | |
124 | \r | |
125 | This function will get bootloader specific parameter address for UEFI payload.\r | |
126 | e.g. HobList pointer for Slim Bootloader, and coreboot table header for Coreboot.\r | |
127 | \r | |
128 | @retval NULL Failed to find the GUID HOB.\r | |
129 | @retval others GUIDed HOB data pointer.\r | |
130 | \r | |
131 | **/\r | |
132 | VOID *\r | |
133 | EFIAPI\r | |
134 | GetParameterBase (\r | |
135 | VOID\r | |
136 | )\r | |
137 | {\r | |
138 | struct cb_header *Header;\r | |
139 | struct cb_record *Record;\r | |
140 | UINT8 *TmpPtr;\r | |
141 | UINT8 *CbTablePtr;\r | |
142 | UINTN Idx;\r | |
422e5d2f | 143 | EFI_STATUS Status;\r |
04af8bf2 DG |
144 | \r |
145 | //\r | |
146 | // coreboot could pass coreboot table to UEFI payload\r | |
147 | //\r | |
148 | Header = (struct cb_header *)(UINTN)GET_BOOTLOADER_PARAMETER ();\r | |
149 | if (IsValidCbTable (Header)) {\r | |
150 | return Header;\r | |
151 | }\r | |
152 | \r | |
153 | //\r | |
154 | // Find simplified coreboot table in memory range 0 ~ 4KB.\r | |
155 | // Some GCC version does not allow directly access to NULL pointer,\r | |
156 | // so start the search from 0x10 instead.\r | |
157 | //\r | |
158 | for (Idx = 16; Idx < 4096; Idx += 16) {\r | |
159 | Header = (struct cb_header *)Idx;\r | |
160 | if (Header->signature == CB_HEADER_SIGNATURE) {\r | |
161 | break;\r | |
162 | }\r | |
163 | }\r | |
164 | \r | |
165 | if (Idx >= 4096) {\r | |
166 | return NULL;\r | |
167 | }\r | |
168 | \r | |
169 | //\r | |
170 | // Check the coreboot header\r | |
171 | //\r | |
172 | if (!IsValidCbTable (Header)) {\r | |
173 | return NULL;\r | |
174 | }\r | |
175 | \r | |
176 | //\r | |
177 | // Find full coreboot table in high memory\r | |
178 | //\r | |
179 | CbTablePtr = NULL;\r | |
180 | TmpPtr = (UINT8 *)Header + Header->header_bytes;\r | |
181 | for (Idx = 0; Idx < Header->table_entries; Idx++) {\r | |
182 | Record = (struct cb_record *)TmpPtr;\r | |
183 | if (Record->tag == CB_TAG_FORWARD) {\r | |
184 | CbTablePtr = (VOID *)(UINTN)((struct cb_forward *)(UINTN)Record)->forward;\r | |
185 | break;\r | |
186 | }\r | |
187 | TmpPtr += Record->size;\r | |
188 | }\r | |
189 | \r | |
190 | //\r | |
191 | // Check the coreboot header in high memory\r | |
192 | //\r | |
193 | if (!IsValidCbTable ((struct cb_header *)CbTablePtr)) {\r | |
194 | return NULL;\r | |
195 | }\r | |
196 | \r | |
422e5d2f GD |
197 | PcdSet64S (PcdBootloaderParameter, (UINTN)CbTablePtr);\r |
198 | ASSERT_EFI_STATUS (Status);\r | |
04af8bf2 DG |
199 | \r |
200 | return CbTablePtr;\r | |
201 | }\r | |
202 | \r | |
203 | \r | |
204 | /**\r | |
205 | Find coreboot record with given Tag.\r | |
206 | \r | |
207 | @param Tag The tag id to be found\r | |
208 | \r | |
209 | @retval NULL The Tag is not found.\r | |
210 | @retval Others The pointer to the record found.\r | |
211 | \r | |
212 | **/\r | |
213 | VOID *\r | |
214 | FindCbTag (\r | |
215 | IN UINT32 Tag\r | |
216 | )\r | |
217 | {\r | |
218 | struct cb_header *Header;\r | |
219 | struct cb_record *Record;\r | |
220 | UINT8 *TmpPtr;\r | |
221 | UINT8 *TagPtr;\r | |
222 | UINTN Idx;\r | |
223 | \r | |
224 | Header = (struct cb_header *) GetParameterBase ();\r | |
225 | \r | |
226 | TagPtr = NULL;\r | |
227 | TmpPtr = (UINT8 *)Header + Header->header_bytes;\r | |
228 | for (Idx = 0; Idx < Header->table_entries; Idx++) {\r | |
229 | Record = (struct cb_record *)TmpPtr;\r | |
230 | if (Record->tag == Tag) {\r | |
231 | TagPtr = TmpPtr;\r | |
232 | break;\r | |
233 | }\r | |
234 | TmpPtr += Record->size;\r | |
235 | }\r | |
236 | \r | |
237 | return TagPtr;\r | |
238 | }\r | |
239 | \r | |
240 | \r | |
241 | /**\r | |
242 | Find the given table with TableId from the given coreboot memory Root.\r | |
243 | \r | |
244 | @param Root The coreboot memory table to be searched in\r | |
245 | @param TableId Table id to be found\r | |
246 | @param MemTable To save the base address of the memory table found\r | |
247 | @param MemTableSize To save the size of memory table found\r | |
248 | \r | |
249 | @retval RETURN_SUCCESS Successfully find out the memory table.\r | |
250 | @retval RETURN_INVALID_PARAMETER Invalid input parameters.\r | |
251 | @retval RETURN_NOT_FOUND Failed to find the memory table.\r | |
252 | \r | |
253 | **/\r | |
254 | RETURN_STATUS\r | |
255 | FindCbMemTable (\r | |
256 | IN struct cbmem_root *Root,\r | |
257 | IN UINT32 TableId,\r | |
258 | OUT VOID **MemTable,\r | |
259 | OUT UINT32 *MemTableSize\r | |
260 | )\r | |
261 | {\r | |
262 | UINTN Idx;\r | |
263 | BOOLEAN IsImdEntry;\r | |
264 | struct cbmem_entry *Entries;\r | |
265 | \r | |
266 | if ((Root == NULL) || (MemTable == NULL)) {\r | |
267 | return RETURN_INVALID_PARAMETER;\r | |
268 | }\r | |
269 | //\r | |
270 | // Check if the entry is CBMEM or IMD\r | |
271 | // and handle them separately\r | |
272 | //\r | |
273 | Entries = Root->entries;\r | |
274 | if (Entries[0].magic == CBMEM_ENTRY_MAGIC) {\r | |
275 | IsImdEntry = FALSE;\r | |
276 | } else {\r | |
277 | Entries = (struct cbmem_entry *)((struct imd_root *)Root)->entries;\r | |
278 | if (Entries[0].magic == IMD_ENTRY_MAGIC) {\r | |
279 | IsImdEntry = TRUE;\r | |
280 | } else {\r | |
281 | return RETURN_NOT_FOUND;\r | |
282 | }\r | |
283 | }\r | |
284 | \r | |
285 | for (Idx = 0; Idx < Root->num_entries; Idx++) {\r | |
286 | if (Entries[Idx].id == TableId) {\r | |
287 | if (IsImdEntry) {\r | |
288 | *MemTable = (VOID *) ((UINTN)Entries[Idx].start + (UINTN)Root);\r | |
289 | } else {\r | |
290 | *MemTable = (VOID *) (UINTN)Entries[Idx].start;\r | |
291 | }\r | |
292 | if (MemTableSize != NULL) {\r | |
293 | *MemTableSize = Entries[Idx].size;\r | |
294 | }\r | |
295 | \r | |
296 | DEBUG ((DEBUG_INFO, "Find CbMemTable Id 0x%x, base %p, size 0x%x\n",\r | |
297 | TableId, *MemTable, Entries[Idx].size));\r | |
298 | return RETURN_SUCCESS;\r | |
299 | }\r | |
300 | }\r | |
301 | \r | |
302 | return RETURN_NOT_FOUND;\r | |
303 | }\r | |
304 | \r | |
305 | /**\r | |
306 | Acquire the coreboot memory table with the given table id\r | |
307 | \r | |
308 | @param TableId Table id to be searched\r | |
309 | @param MemTable Pointer to the base address of the memory table\r | |
310 | @param MemTableSize Pointer to the size of the memory table\r | |
311 | \r | |
312 | @retval RETURN_SUCCESS Successfully find out the memory table.\r | |
313 | @retval RETURN_INVALID_PARAMETER Invalid input parameters.\r | |
314 | @retval RETURN_NOT_FOUND Failed to find the memory table.\r | |
315 | \r | |
316 | **/\r | |
317 | RETURN_STATUS\r | |
318 | ParseCbMemTable (\r | |
319 | IN UINT32 TableId,\r | |
320 | OUT VOID **MemTable,\r | |
321 | OUT UINT32 *MemTableSize\r | |
322 | )\r | |
323 | {\r | |
324 | EFI_STATUS Status;\r | |
325 | struct cb_memory *rec;\r | |
326 | struct cb_memory_range *Range;\r | |
327 | UINT64 Start;\r | |
328 | UINT64 Size;\r | |
329 | UINTN Index;\r | |
330 | struct cbmem_root *CbMemRoot;\r | |
331 | \r | |
332 | if (MemTable == NULL) {\r | |
333 | return RETURN_INVALID_PARAMETER;\r | |
334 | }\r | |
335 | \r | |
336 | *MemTable = NULL;\r | |
337 | Status = RETURN_NOT_FOUND;\r | |
338 | \r | |
339 | //\r | |
340 | // Get the coreboot memory table\r | |
341 | //\r | |
342 | rec = (struct cb_memory *)FindCbTag (CB_TAG_MEMORY);\r | |
343 | if (rec == NULL) {\r | |
344 | return Status;\r | |
345 | }\r | |
346 | \r | |
347 | for (Index = 0; Index < MEM_RANGE_COUNT(rec); Index++) {\r | |
348 | Range = MEM_RANGE_PTR(rec, Index);\r | |
349 | Start = cb_unpack64(Range->start);\r | |
350 | Size = cb_unpack64(Range->size);\r | |
351 | \r | |
352 | if ((Range->type == CB_MEM_TABLE) && (Start > 0x1000)) {\r | |
353 | CbMemRoot = (struct cbmem_root *)(UINTN)(Start + Size - DYN_CBMEM_ALIGN_SIZE);\r | |
354 | Status = FindCbMemTable (CbMemRoot, TableId, MemTable, MemTableSize);\r | |
355 | if (!EFI_ERROR (Status)) {\r | |
356 | break;\r | |
357 | }\r | |
358 | }\r | |
359 | }\r | |
360 | \r | |
361 | return Status;\r | |
362 | }\r | |
363 | \r | |
364 | \r | |
365 | \r | |
366 | /**\r | |
367 | Acquire the memory information from the coreboot table in memory.\r | |
368 | \r | |
369 | @param MemInfoCallback The callback routine\r | |
370 | @param Params Pointer to the callback routine parameter\r | |
371 | \r | |
372 | @retval RETURN_SUCCESS Successfully find out the memory information.\r | |
373 | @retval RETURN_NOT_FOUND Failed to find the memory information.\r | |
374 | \r | |
375 | **/\r | |
376 | RETURN_STATUS\r | |
377 | EFIAPI\r | |
378 | ParseMemoryInfo (\r | |
379 | IN BL_MEM_INFO_CALLBACK MemInfoCallback,\r | |
380 | IN VOID *Params\r | |
381 | )\r | |
382 | {\r | |
383 | struct cb_memory *rec;\r | |
384 | struct cb_memory_range *Range;\r | |
385 | UINTN Index;\r | |
386 | MEMROY_MAP_ENTRY MemoryMap;\r | |
387 | \r | |
388 | //\r | |
389 | // Get the coreboot memory table\r | |
390 | //\r | |
391 | rec = (struct cb_memory *)FindCbTag (CB_TAG_MEMORY);\r | |
392 | if (rec == NULL) {\r | |
393 | return RETURN_NOT_FOUND;\r | |
394 | }\r | |
395 | \r | |
396 | for (Index = 0; Index < MEM_RANGE_COUNT(rec); Index++) {\r | |
397 | Range = MEM_RANGE_PTR(rec, Index);\r | |
398 | MemoryMap.Base = cb_unpack64(Range->start);\r | |
399 | MemoryMap.Size = cb_unpack64(Range->size);\r | |
400 | MemoryMap.Type = (UINT8)Range->type;\r | |
401 | MemoryMap.Flag = 0;\r | |
402 | DEBUG ((DEBUG_INFO, "%d. %016lx - %016lx [%02x]\n",\r | |
403 | Index, MemoryMap.Base, MemoryMap.Base + MemoryMap.Size - 1, MemoryMap.Type));\r | |
404 | \r | |
405 | MemInfoCallback (&MemoryMap, Params);\r | |
406 | }\r | |
407 | \r | |
408 | return RETURN_SUCCESS;\r | |
409 | }\r | |
410 | \r | |
411 | \r | |
412 | /**\r | |
413 | Acquire acpi table and smbios table from coreboot\r | |
414 | \r | |
415 | @param SystemTableInfo Pointer to the system table info\r | |
416 | \r | |
417 | @retval RETURN_SUCCESS Successfully find out the tables.\r | |
418 | @retval RETURN_NOT_FOUND Failed to find the tables.\r | |
419 | \r | |
420 | **/\r | |
421 | RETURN_STATUS\r | |
422 | EFIAPI\r | |
423 | ParseSystemTable (\r | |
424 | OUT SYSTEM_TABLE_INFO *SystemTableInfo\r | |
425 | )\r | |
426 | {\r | |
427 | EFI_STATUS Status;\r | |
428 | VOID *MemTable;\r | |
429 | UINT32 MemTableSize;\r | |
430 | \r | |
431 | Status = ParseCbMemTable (SIGNATURE_32 ('T', 'B', 'M', 'S'), &MemTable, &MemTableSize);\r | |
432 | if (EFI_ERROR (Status)) {\r | |
433 | return EFI_NOT_FOUND;\r | |
434 | }\r | |
435 | SystemTableInfo->SmbiosTableBase = (UINT64) (UINTN)MemTable;\r | |
436 | SystemTableInfo->SmbiosTableSize = MemTableSize;\r | |
437 | \r | |
438 | Status = ParseCbMemTable (SIGNATURE_32 ('I', 'P', 'C', 'A'), &MemTable, &MemTableSize);\r | |
439 | if (EFI_ERROR (Status)) {\r | |
440 | return EFI_NOT_FOUND;\r | |
441 | }\r | |
442 | SystemTableInfo->AcpiTableBase = (UINT64) (UINTN)MemTable;\r | |
443 | SystemTableInfo->AcpiTableSize = MemTableSize;\r | |
444 | \r | |
445 | return Status;\r | |
446 | }\r | |
447 | \r | |
448 | \r | |
449 | /**\r | |
450 | Find the serial port information\r | |
451 | \r | |
452 | @param SERIAL_PORT_INFO Pointer to serial port info structure\r | |
453 | \r | |
454 | @retval RETURN_SUCCESS Successfully find the serial port information.\r | |
455 | @retval RETURN_NOT_FOUND Failed to find the serial port information .\r | |
456 | \r | |
457 | **/\r | |
458 | RETURN_STATUS\r | |
459 | EFIAPI\r | |
460 | ParseSerialInfo (\r | |
461 | OUT SERIAL_PORT_INFO *SerialPortInfo\r | |
462 | )\r | |
463 | {\r | |
464 | struct cb_serial *CbSerial;\r | |
465 | \r | |
466 | CbSerial = FindCbTag (CB_TAG_SERIAL);\r | |
467 | if (CbSerial == NULL) {\r | |
468 | return RETURN_NOT_FOUND;\r | |
469 | }\r | |
470 | \r | |
471 | SerialPortInfo->BaseAddr = CbSerial->baseaddr;\r | |
472 | SerialPortInfo->RegWidth = CbSerial->regwidth;\r | |
473 | SerialPortInfo->Type = CbSerial->type;\r | |
474 | SerialPortInfo->Baud = CbSerial->baud;\r | |
475 | SerialPortInfo->InputHertz = CbSerial->input_hertz;\r | |
476 | SerialPortInfo->UartPciAddr = CbSerial->uart_pci_addr;\r | |
477 | \r | |
478 | return RETURN_SUCCESS;\r | |
479 | }\r | |
480 | \r | |
481 | /**\r | |
482 | Find the video frame buffer information\r | |
483 | \r | |
484 | @param GfxInfo Pointer to the EFI_PEI_GRAPHICS_INFO_HOB structure\r | |
485 | \r | |
486 | @retval RETURN_SUCCESS Successfully find the video frame buffer information.\r | |
487 | @retval RETURN_NOT_FOUND Failed to find the video frame buffer information .\r | |
488 | \r | |
489 | **/\r | |
490 | RETURN_STATUS\r | |
491 | EFIAPI\r | |
492 | ParseGfxInfo (\r | |
493 | OUT EFI_PEI_GRAPHICS_INFO_HOB *GfxInfo\r | |
494 | )\r | |
495 | {\r | |
496 | struct cb_framebuffer *CbFbRec;\r | |
497 | EFI_GRAPHICS_OUTPUT_MODE_INFORMATION *GfxMode;\r | |
498 | \r | |
499 | if (GfxInfo == NULL) {\r | |
500 | return RETURN_INVALID_PARAMETER;\r | |
501 | }\r | |
502 | \r | |
503 | CbFbRec = FindCbTag (CB_TAG_FRAMEBUFFER);\r | |
504 | if (CbFbRec == NULL) {\r | |
505 | return RETURN_NOT_FOUND;\r | |
506 | }\r | |
507 | \r | |
508 | DEBUG ((DEBUG_INFO, "Found coreboot video frame buffer information\n"));\r | |
509 | DEBUG ((DEBUG_INFO, "physical_address: 0x%lx\n", CbFbRec->physical_address));\r | |
510 | DEBUG ((DEBUG_INFO, "x_resolution: 0x%x\n", CbFbRec->x_resolution));\r | |
511 | DEBUG ((DEBUG_INFO, "y_resolution: 0x%x\n", CbFbRec->y_resolution));\r | |
512 | DEBUG ((DEBUG_INFO, "bits_per_pixel: 0x%x\n", CbFbRec->bits_per_pixel));\r | |
513 | DEBUG ((DEBUG_INFO, "bytes_per_line: 0x%x\n", CbFbRec->bytes_per_line));\r | |
514 | \r | |
515 | DEBUG ((DEBUG_INFO, "red_mask_size: 0x%x\n", CbFbRec->red_mask_size));\r | |
516 | DEBUG ((DEBUG_INFO, "red_mask_pos: 0x%x\n", CbFbRec->red_mask_pos));\r | |
517 | DEBUG ((DEBUG_INFO, "green_mask_size: 0x%x\n", CbFbRec->green_mask_size));\r | |
518 | DEBUG ((DEBUG_INFO, "green_mask_pos: 0x%x\n", CbFbRec->green_mask_pos));\r | |
519 | DEBUG ((DEBUG_INFO, "blue_mask_size: 0x%x\n", CbFbRec->blue_mask_size));\r | |
520 | DEBUG ((DEBUG_INFO, "blue_mask_pos: 0x%x\n", CbFbRec->blue_mask_pos));\r | |
521 | DEBUG ((DEBUG_INFO, "reserved_mask_size: 0x%x\n", CbFbRec->reserved_mask_size));\r | |
522 | DEBUG ((DEBUG_INFO, "reserved_mask_pos: 0x%x\n", CbFbRec->reserved_mask_pos));\r | |
523 | \r | |
524 | GfxMode = &GfxInfo->GraphicsMode;\r | |
525 | GfxMode->Version = 0;\r | |
526 | GfxMode->HorizontalResolution = CbFbRec->x_resolution;\r | |
527 | GfxMode->VerticalResolution = CbFbRec->y_resolution;\r | |
528 | GfxMode->PixelsPerScanLine = (CbFbRec->bytes_per_line << 3) / CbFbRec->bits_per_pixel;\r | |
529 | if ((CbFbRec->red_mask_pos == 0) && (CbFbRec->green_mask_pos == 8) && (CbFbRec->blue_mask_pos == 16)) {\r | |
530 | GfxMode->PixelFormat = PixelRedGreenBlueReserved8BitPerColor;\r | |
531 | } else if ((CbFbRec->blue_mask_pos == 0) && (CbFbRec->green_mask_pos == 8) && (CbFbRec->red_mask_pos == 16)) {\r | |
532 | GfxMode->PixelFormat = PixelBlueGreenRedReserved8BitPerColor;\r | |
533 | }\r | |
534 | GfxMode->PixelInformation.RedMask = ((1 << CbFbRec->red_mask_size) - 1) << CbFbRec->red_mask_pos;\r | |
535 | GfxMode->PixelInformation.GreenMask = ((1 << CbFbRec->green_mask_size) - 1) << CbFbRec->green_mask_pos;\r | |
536 | GfxMode->PixelInformation.BlueMask = ((1 << CbFbRec->blue_mask_size) - 1) << CbFbRec->blue_mask_pos;\r | |
537 | GfxMode->PixelInformation.ReservedMask = ((1 << CbFbRec->reserved_mask_size) - 1) << CbFbRec->reserved_mask_pos;\r | |
538 | \r | |
539 | GfxInfo->FrameBufferBase = CbFbRec->physical_address;\r | |
540 | GfxInfo->FrameBufferSize = CbFbRec->bytes_per_line * CbFbRec->y_resolution;\r | |
541 | \r | |
542 | return RETURN_SUCCESS;\r | |
543 | }\r | |
544 | \r | |
545 | /**\r | |
546 | Find the video frame buffer device information\r | |
547 | \r | |
548 | @param GfxDeviceInfo Pointer to the EFI_PEI_GRAPHICS_DEVICE_INFO_HOB structure\r | |
549 | \r | |
550 | @retval RETURN_SUCCESS Successfully find the video frame buffer information.\r | |
551 | @retval RETURN_NOT_FOUND Failed to find the video frame buffer information.\r | |
552 | \r | |
553 | **/\r | |
554 | RETURN_STATUS\r | |
555 | EFIAPI\r | |
556 | ParseGfxDeviceInfo (\r | |
557 | OUT EFI_PEI_GRAPHICS_DEVICE_INFO_HOB *GfxDeviceInfo\r | |
558 | )\r | |
559 | {\r | |
560 | return RETURN_NOT_FOUND;\r | |
561 | }\r | |
562 | \r |