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Correct file header comments for DiskIo2.h.
[mirror_edk2.git] / IntelFrameworkModulePkg / Csm / LegacyBiosDxe / LegacyBootSupport.c
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bcecde14 1/** @file\r
2\r
81c0d6e9 3Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>\r
bcecde14 4\r
5This program and the accompanying materials\r
6are licensed and made available under the terms and conditions\r
7of the BSD License which accompanies this distribution. The\r
8full text of the license may be found at\r
9http://opensource.org/licenses/bsd-license.php\r
10\r
11THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
12WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
13\r
14**/\r
15\r
16#include "LegacyBiosInterface.h"\r
17#include <IndustryStandard/Pci.h>\r
18\r
19#define BOOT_LEGACY_OS 0\r
20#define BOOT_EFI_OS 1\r
21#define BOOT_UNCONVENTIONAL_DEVICE 2\r
22\r
23UINT32 mLoadOptionsSize = 0;\r
24UINTN mBootMode = BOOT_LEGACY_OS;\r
25VOID *mLoadOptions = NULL;\r
26BBS_BBS_DEVICE_PATH *mBbsDevicePathPtr = NULL;\r
27BBS_BBS_DEVICE_PATH mBbsDevicePathNode;\r
28UDC_ATTRIBUTES mAttributes = { 0, 0, 0, 0 };\r
29UINTN mBbsEntry = 0;\r
30VOID *mBeerData = NULL;\r
31VOID *mServiceAreaData = NULL;\r
32UINT64 mLowWater = 0xffffffffffffffffULL;\r
33\r
34extern BBS_TABLE *mBbsTable;\r
35\r
36/**\r
37 Print the BBS Table.\r
38\r
39 @param BbsTable The BBS table.\r
40\r
41\r
42**/\r
43VOID\r
44PrintBbsTable (\r
45 IN BBS_TABLE *BbsTable\r
46 )\r
47{\r
48 UINT16 Index;\r
49 UINT16 SubIndex;\r
50 CHAR8 *String;\r
51\r
52 DEBUG ((EFI_D_INFO, "\n"));\r
53 DEBUG ((EFI_D_INFO, " NO Prio bb/dd/ff cl/sc Type Stat segm:offs mfgs:mfgo dess:deso\n"));\r
54 DEBUG ((EFI_D_INFO, "=================================================================\n"));\r
55 for (Index = 0; Index < MAX_BBS_ENTRIES; Index++) {\r
56 //\r
57 // Filter\r
58 //\r
59 if (BbsTable[Index].BootPriority == BBS_IGNORE_ENTRY) {\r
60 continue;\r
61 }\r
62\r
63 DEBUG ((\r
64 EFI_D_INFO,\r
65 " %02x: %04x %02x/%02x/%02x %02x/%02x %04x %04x",\r
66 (UINTN) Index,\r
67 (UINTN) BbsTable[Index].BootPriority,\r
68 (UINTN) BbsTable[Index].Bus,\r
69 (UINTN) BbsTable[Index].Device,\r
70 (UINTN) BbsTable[Index].Function,\r
71 (UINTN) BbsTable[Index].Class,\r
72 (UINTN) BbsTable[Index].SubClass,\r
73 (UINTN) BbsTable[Index].DeviceType,\r
74 (UINTN) * (UINT16 *) &BbsTable[Index].StatusFlags\r
75 ));\r
76 DEBUG ((\r
77 EFI_D_INFO,\r
78 " %04x:%04x %04x:%04x %04x:%04x",\r
79 (UINTN) BbsTable[Index].BootHandlerSegment,\r
80 (UINTN) BbsTable[Index].BootHandlerOffset,\r
81 (UINTN) BbsTable[Index].MfgStringSegment,\r
82 (UINTN) BbsTable[Index].MfgStringOffset,\r
83 (UINTN) BbsTable[Index].DescStringSegment,\r
84 (UINTN) BbsTable[Index].DescStringOffset\r
85 ));\r
86\r
87 //\r
88 // Print DescString\r
89 //\r
90 String = (CHAR8 *)(UINTN)((BbsTable[Index].DescStringSegment << 4) + BbsTable[Index].DescStringOffset);\r
91 if (String != NULL) {\r
92 DEBUG ((EFI_D_INFO," ("));\r
93 for (SubIndex = 0; String[SubIndex] != 0; SubIndex++) {\r
94 DEBUG ((EFI_D_INFO, "%c", String[SubIndex]));\r
95 }\r
96 DEBUG ((EFI_D_INFO,")"));\r
97 }\r
98 DEBUG ((EFI_D_INFO,"\n"));\r
99 }\r
100\r
101 DEBUG ((EFI_D_INFO, "\n"));\r
102\r
103 return ;\r
104}\r
105\r
106/**\r
107 Print the BBS Table.\r
108\r
109 @param HddInfo The HddInfo table.\r
110\r
111\r
112**/\r
113VOID\r
114PrintHddInfo (\r
115 IN HDD_INFO *HddInfo\r
116 )\r
117{\r
118 UINTN Index;\r
119\r
120 DEBUG ((EFI_D_INFO, "\n"));\r
121 for (Index = 0; Index < MAX_IDE_CONTROLLER; Index++) {\r
122 DEBUG ((EFI_D_INFO, "Index - %04x\n", Index));\r
123 DEBUG ((EFI_D_INFO, " Status - %04x\n", (UINTN)HddInfo[Index].Status));\r
124 DEBUG ((EFI_D_INFO, " B/D/F - %02x/%02x/%02x\n", (UINTN)HddInfo[Index].Bus, (UINTN)HddInfo[Index].Device, (UINTN)HddInfo[Index].Function));\r
125 DEBUG ((EFI_D_INFO, " Command - %04x\n", HddInfo[Index].CommandBaseAddress));\r
126 DEBUG ((EFI_D_INFO, " Control - %04x\n", HddInfo[Index].ControlBaseAddress));\r
127 DEBUG ((EFI_D_INFO, " BusMaster - %04x\n", HddInfo[Index].BusMasterAddress));\r
128 DEBUG ((EFI_D_INFO, " HddIrq - %02x\n", HddInfo[Index].HddIrq));\r
129 DEBUG ((EFI_D_INFO, " IdentifyDrive[0].Raw[0] - %x\n", HddInfo[Index].IdentifyDrive[0].Raw[0]));\r
130 DEBUG ((EFI_D_INFO, " IdentifyDrive[1].Raw[0] - %x\n", HddInfo[Index].IdentifyDrive[1].Raw[0]));\r
131 }\r
132\r
133 DEBUG ((EFI_D_INFO, "\n"));\r
134\r
135 return ;\r
136}\r
137\r
7dad86fc
RN		 138/**\r
139 Print the PCI Interrupt Line and Interrupt Pin registers.\r
140**/\r
141VOID\r
142PrintPciInterruptRegister (\r
143 VOID\r
144 )\r
145{\r
146 EFI_STATUS Status;\r
147 UINTN Index;\r
148 EFI_HANDLE *Handles;\r
149 UINTN HandleNum;\r
150 EFI_PCI_IO_PROTOCOL *PciIo;\r
151 UINT8 Interrupt[2];\r
152 UINTN Segment;\r
153 UINTN Bus;\r
154 UINTN Device;\r
155 UINTN Function;\r
156\r
157 gBS->LocateHandleBuffer (\r
158 ByProtocol,\r
159 &gEfiPciIoProtocolGuid,\r
160 NULL,\r
161 &HandleNum,\r
162 &Handles\r
163 );\r
164\r
165 Bus = 0;\r
166 Device = 0;\r
167 Function = 0;\r
168\r
169 DEBUG ((EFI_D_INFO, "\n"));\r
170 DEBUG ((EFI_D_INFO, " bb/dd/ff interrupt line interrupt pin\n"));\r
171 DEBUG ((EFI_D_INFO, "======================================\n"));\r
172 for (Index = 0; Index < HandleNum; Index++) {\r
173 Status = gBS->HandleProtocol (Handles[Index], &gEfiPciIoProtocolGuid, (VOID **) &PciIo);\r
174 if (!EFI_ERROR (Status)) {\r
175 Status = PciIo->Pci.Read (\r
176 PciIo,\r
177 EfiPciIoWidthUint8,\r
178 PCI_INT_LINE_OFFSET,\r
179 2,\r
180 Interrupt\r
181 );\r
182 }\r
183 if (!EFI_ERROR (Status)) {\r
184 Status = PciIo->GetLocation (\r
185 PciIo,\r
186 &Segment,\r
187 &Bus,\r
188 &Device,\r
189 &Function\r
190 );\r
191 }\r
192 if (!EFI_ERROR (Status)) {\r
193 DEBUG ((EFI_D_INFO, " %02x/%02x/%02x 0x%02x 0x%02x\n",\r
194 Bus, Device, Function, Interrupt[0], Interrupt[1]));\r
195 }\r
196 }\r
197 DEBUG ((EFI_D_INFO, "\n"));\r
198\r
199 if (Handles != NULL) {\r
200 FreePool (Handles);\r
201 }\r
202}\r
203\r
bcecde14 204/**\r
205 Identify drive data must be updated to actual parameters before boot.\r
206\r
207 @param IdentifyDriveData ATA Identify Data\r
208\r
209**/\r
210VOID\r
211UpdateIdentifyDriveData (\r
212 IN UINT8 *IdentifyDriveData\r
213 );\r
214\r
215/**\r
216 Update SIO data.\r
217\r
218 @param Private Legacy BIOS Instance data\r
219\r
220 @retval EFI_SUCCESS Removable media not present\r
221\r
222**/\r
223EFI_STATUS\r
224UpdateSioData (\r
225 IN LEGACY_BIOS_INSTANCE *Private\r
226 )\r
227{\r
228 EFI_STATUS Status;\r
229 UINTN Index;\r
230 UINTN Index1;\r
231 UINT8 LegacyInterrupts[16];\r
232 EFI_LEGACY_IRQ_ROUTING_ENTRY *RoutingTable;\r
233 UINTN RoutingTableEntries;\r
234 EFI_LEGACY_IRQ_PRIORITY_TABLE_ENTRY *IrqPriorityTable;\r
235 UINTN NumberPriorityEntries;\r
236 EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;\r
237 UINT8 HddIrq;\r
238 UINT16 LegacyInt;\r
239 UINT16 LegMask;\r
240 UINT32 Register;\r
241 UINTN HandleCount;\r
242 EFI_HANDLE *HandleBuffer;\r
243 EFI_ISA_IO_PROTOCOL *IsaIo;\r
244\r
245 LegacyInt = 0;\r
246 HandleBuffer = NULL;\r
247\r
248 EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;\r
249 LegacyBiosBuildSioData (Private);\r
250 SetMem (LegacyInterrupts, sizeof (LegacyInterrupts), 0);\r
251\r
252 //\r
253 // Create list of legacy interrupts.\r
254 //\r
255 for (Index = 0; Index < 4; Index++) {\r
256 LegacyInterrupts[Index] = EfiToLegacy16BootTable->SioData.Serial[Index].Irq;\r
257 }\r
258\r
259 for (Index = 4; Index < 7; Index++) {\r
260 LegacyInterrupts[Index] = EfiToLegacy16BootTable->SioData.Parallel[Index - 4].Irq;\r
261 }\r
262\r
263 LegacyInterrupts[7] = EfiToLegacy16BootTable->SioData.Floppy.Irq;\r
264\r
265 //\r
266 // Get Legacy Hdd IRQs. If native mode treat as PCI\r
267 //\r
268 for (Index = 0; Index < 2; Index++) {\r
269 HddIrq = EfiToLegacy16BootTable->HddInfo[Index].HddIrq;\r
270 if ((HddIrq != 0) && ((HddIrq == 15) || (HddIrq == 14))) {\r
271 LegacyInterrupts[Index + 8] = HddIrq;\r
272 }\r
273 }\r
274\r
275 Private->LegacyBiosPlatform->GetRoutingTable (\r
276 Private->LegacyBiosPlatform,\r
277 (VOID *) &RoutingTable,\r
278 &RoutingTableEntries,\r
279 NULL,\r
280 NULL,\r
281 (VOID **) &IrqPriorityTable,\r
282 &NumberPriorityEntries\r
283 );\r
284 //\r
285 // Remove legacy interrupts from the list of PCI interrupts available.\r
286 //\r
287 for (Index = 0; Index <= 0x0b; Index++) {\r
288 for (Index1 = 0; Index1 <= NumberPriorityEntries; Index1++) {\r
289 if (LegacyInterrupts[Index] != 0) {\r
290 LegacyInt = (UINT16) (LegacyInt | (1 << LegacyInterrupts[Index]));\r
291 if (LegacyInterrupts[Index] == IrqPriorityTable[Index1].Irq) {\r
292 IrqPriorityTable[Index1].Used = LEGACY_USED;\r
293 }\r
294 }\r
295 }\r
296 }\r
297\r
298 Private->Legacy8259->GetMask (\r
299 Private->Legacy8259,\r
300 &LegMask,\r
301 NULL,\r
302 NULL,\r
303 NULL\r
304 );\r
305\r
306 //\r
307 // Set SIO interrupts and disable mouse. Let mouse driver\r
308 // re-enable it.\r
309 //\r
310 LegMask = (UINT16) ((LegMask &~LegacyInt) | 0x1000);\r
311 Private->Legacy8259->SetMask (\r
312 Private->Legacy8259,\r
313 &LegMask,\r
314 NULL,\r
315 NULL,\r
316 NULL\r
317 );\r
318\r
319 //\r
320 // Disable mouse in keyboard controller\r
321 //\r
322 Register = 0xA7;\r
323 Status = gBS->LocateHandleBuffer (\r
324 ByProtocol,\r
325 &gEfiIsaIoProtocolGuid,\r
326 NULL,\r
327 &HandleCount,\r
328 &HandleBuffer\r
329 );\r
330 if (EFI_ERROR (Status)) {\r
331 return Status;\r
332 }\r
333\r
334 for (Index = 0; Index < HandleCount; Index++) {\r
335 Status = gBS->HandleProtocol (\r
336 HandleBuffer[Index],\r
337 &gEfiIsaIoProtocolGuid,\r
338 (VOID **) &IsaIo\r
339 );\r
340 ASSERT_EFI_ERROR (Status);\r
341 IsaIo->Io.Write (IsaIo, EfiIsaIoWidthUint8, 0x64, 1, &Register);\r
342\r
343 }\r
344\r
345 if (HandleBuffer != NULL) {\r
346 FreePool (HandleBuffer);\r
347 }\r
348\r
349 return EFI_SUCCESS;\r
350\r
351}\r
352\r
353/**\r
354 Identify drive data must be updated to actual parameters before boot.\r
355 This requires updating the checksum, if it exists.\r
356\r
357 @param IdentifyDriveData ATA Identify Data\r
358 @param Checksum checksum of the ATA Identify Data\r
359\r
360 @retval EFI_SUCCESS checksum calculated\r
361 @retval EFI_SECURITY_VIOLATION IdentifyData invalid\r
362\r
363**/\r
364EFI_STATUS\r
365CalculateIdentifyDriveChecksum (\r
366 IN UINT8 *IdentifyDriveData,\r
367 OUT UINT8 *Checksum\r
368 )\r
369{\r
370 UINTN Index;\r
371 UINT8 LocalChecksum;\r
372 LocalChecksum = 0;\r
373 *Checksum = 0;\r
374 if (IdentifyDriveData[510] != 0xA5) {\r
375 return EFI_SECURITY_VIOLATION;\r
376 }\r
377\r
378 for (Index = 0; Index < 512; Index++) {\r
379 LocalChecksum = (UINT8) (LocalChecksum + IdentifyDriveData[Index]);\r
380 }\r
381\r
382 *Checksum = LocalChecksum;\r
383 return EFI_SUCCESS;\r
384}\r
385\r
386\r
387/**\r
388 Identify drive data must be updated to actual parameters before boot.\r
389\r
390 @param IdentifyDriveData ATA Identify Data\r
391\r
392\r
393**/\r
394VOID\r
395UpdateIdentifyDriveData (\r
396 IN UINT8 *IdentifyDriveData\r
397 )\r
398{\r
399 UINT16 NumberCylinders;\r
400 UINT16 NumberHeads;\r
401 UINT16 NumberSectorsTrack;\r
402 UINT32 CapacityInSectors;\r
403 UINT8 OriginalChecksum;\r
404 UINT8 FinalChecksum;\r
405 EFI_STATUS Status;\r
406 ATAPI_IDENTIFY *ReadInfo;\r
407\r
408 //\r
409 // Status indicates if Integrity byte is correct. Checksum should be\r
410 // 0 if valid.\r
411 //\r
412 ReadInfo = (ATAPI_IDENTIFY *) IdentifyDriveData;\r
413 Status = CalculateIdentifyDriveChecksum (IdentifyDriveData, &OriginalChecksum);\r
414 if (OriginalChecksum != 0) {\r
415 Status = EFI_SECURITY_VIOLATION;\r
416 }\r
417 //\r
418 // If NumberCylinders = 0 then do data(Controller present but don drive attached).\r
419 //\r
420 NumberCylinders = ReadInfo->Raw[1];\r
421 if (NumberCylinders != 0) {\r
422 ReadInfo->Raw[54] = NumberCylinders;\r
423\r
424 NumberHeads = ReadInfo->Raw[3];\r
425 ReadInfo->Raw[55] = NumberHeads;\r
426\r
427 NumberSectorsTrack = ReadInfo->Raw[6];\r
428 ReadInfo->Raw[56] = NumberSectorsTrack;\r
429\r
430 //\r
431 // Copy Multisector info and set valid bit.\r
432 //\r
433 ReadInfo->Raw[59] = (UINT16) (ReadInfo->Raw[47] + 0x100);\r
434 CapacityInSectors = (UINT32) ((UINT32) (NumberCylinders) * (UINT32) (NumberHeads) * (UINT32) (NumberSectorsTrack));\r
435 ReadInfo->Raw[57] = (UINT16) (CapacityInSectors >> 16);\r
436 ReadInfo->Raw[58] = (UINT16) (CapacityInSectors & 0xffff);\r
437 if (Status == EFI_SUCCESS) {\r
438 //\r
439 // Forece checksum byte to 0 and get new checksum.\r
440 //\r
441 ReadInfo->Raw[255] &= 0xff;\r
442 CalculateIdentifyDriveChecksum (IdentifyDriveData, &FinalChecksum);\r
443\r
444 //\r
445 // Force new checksum such that sum is 0.\r
446 //\r
447 FinalChecksum = (UINT8) ((UINT8)0 - FinalChecksum);\r
448 ReadInfo->Raw[255] = (UINT16) (ReadInfo->Raw[255] | (FinalChecksum << 8));\r
449 }\r
450 }\r
451}\r
452\r
453/**\r
454 Identify drive data must be updated to actual parameters before boot.\r
455 Do for all drives.\r
456\r
457 @param Private Legacy BIOS Instance data\r
458\r
459\r
460**/\r
461VOID\r
462UpdateAllIdentifyDriveData (\r
463 IN LEGACY_BIOS_INSTANCE *Private\r
464 )\r
465{\r
466 UINTN Index;\r
467 HDD_INFO *HddInfo;\r
468\r
469 HddInfo = &Private->IntThunk->EfiToLegacy16BootTable.HddInfo[0];\r
470\r
471 for (Index = 0; Index < MAX_IDE_CONTROLLER; Index++) {\r
472 //\r
473 // Each controller can have 2 devices. Update for each device\r
474 //\r
475 if ((HddInfo[Index].Status & HDD_MASTER_IDE) != 0) {\r
476 UpdateIdentifyDriveData ((UINT8 *) (&HddInfo[Index].IdentifyDrive[0].Raw[0]));\r
477 }\r
478\r
479 if ((HddInfo[Index].Status & HDD_SLAVE_IDE) != 0) {\r
480 UpdateIdentifyDriveData ((UINT8 *) (&HddInfo[Index].IdentifyDrive[1].Raw[0]));\r
481 }\r
482 }\r
483}\r
484\r
485/**\r
486 Enable ide controller. This gets disabled when LegacyBoot.c is about\r
487 to run the Option ROMs.\r
488\r
489 @param Private Legacy BIOS Instance data\r
490\r
491\r
492**/\r
493VOID\r
494EnableIdeController (\r
495 IN LEGACY_BIOS_INSTANCE *Private\r
496 )\r
497{\r
498 EFI_PCI_IO_PROTOCOL *PciIo;\r
499 EFI_STATUS Status;\r
500 EFI_HANDLE IdeController;\r
501 UINT8 ByteBuffer;\r
502 UINTN HandleCount;\r
503 EFI_HANDLE *HandleBuffer;\r
504\r
505 Status = Private->LegacyBiosPlatform->GetPlatformHandle (\r
506 Private->LegacyBiosPlatform,\r
507 EfiGetPlatformIdeHandle,\r
508 0,\r
509 &HandleBuffer,\r
510 &HandleCount,\r
511 NULL\r
512 );\r
513 if (!EFI_ERROR (Status)) {\r
514 IdeController = HandleBuffer[0];\r
515 Status = gBS->HandleProtocol (\r
516 IdeController,\r
517 &gEfiPciIoProtocolGuid,\r
518 (VOID **) &PciIo\r
519 );\r
520 ByteBuffer = 0x1f;\r
521 if (!EFI_ERROR (Status)) {\r
522 PciIo->Pci.Write (PciIo, EfiPciIoWidthUint8, 0x04, 1, &ByteBuffer);\r
523 }\r
524 }\r
525}\r
526\r
527\r
528/**\r
529 Enable ide controller. This gets disabled when LegacyBoot.c is about\r
530 to run the Option ROMs.\r
531\r
532 @param Private Legacy BIOS Instance data\r
533\r
534\r
535**/\r
536VOID\r
537EnableAllControllers (\r
538 IN LEGACY_BIOS_INSTANCE *Private\r
539 )\r
540{\r
541 UINTN HandleCount;\r
542 EFI_HANDLE *HandleBuffer;\r
543 UINTN Index;\r
544 EFI_PCI_IO_PROTOCOL *PciIo;\r
545 PCI_TYPE01 PciConfigHeader;\r
546 EFI_STATUS Status;\r
547\r
548 //\r
549 //\r
550 //\r
551 EnableIdeController (Private);\r
552\r
553 //\r
554 // Assumption is table is built from low bus to high bus numbers.\r
555 //\r
556 Status = gBS->LocateHandleBuffer (\r
557 ByProtocol,\r
558 &gEfiPciIoProtocolGuid,\r
559 NULL,\r
560 &HandleCount,\r
561 &HandleBuffer\r
562 );\r
563 ASSERT_EFI_ERROR (Status);\r
564\r
565 for (Index = 0; Index < HandleCount; Index++) {\r
566 Status = gBS->HandleProtocol (\r
567 HandleBuffer[Index],\r
568 &gEfiPciIoProtocolGuid,\r
569 (VOID **) &PciIo\r
570 );\r
571 ASSERT_EFI_ERROR (Status);\r
572\r
573 PciIo->Pci.Read (\r
574 PciIo,\r
575 EfiPciIoWidthUint32,\r
576 0,\r
577 sizeof (PciConfigHeader) / sizeof (UINT32),\r
578 &PciConfigHeader\r
579 );\r
580\r
581 //\r
582 // We do not enable PPB here. This is for HotPlug Consideration.\r
583 // The Platform HotPlug Driver is responsible for Padding enough hot plug\r
584 // resources. It is also responsible for enable this bridge. If it\r
585 // does not pad it. It will cause some early Windows fail to installation.\r
586 // If the platform driver does not pad resource for PPB, PPB should be in\r
587 // un-enabled state to let Windows know that this PPB is not configured by\r
588 // BIOS. So Windows will allocate default resource for PPB.\r
589 //\r
590 // The reason for why we enable the command register is:\r
591 // The CSM will use the IO bar to detect some IRQ status, if the command\r
592 // is disabled, the IO resource will be out of scope.\r
593 // For example:\r
594 // We installed a legacy IRQ handle for a PCI IDE controller. When IRQ\r
595 // comes up, the handle will check the IO space to identify is the\r
596 // controller generated the IRQ source.\r
597 // If the IO command is not enabled, the IRQ handler will has wrong\r
598 // information. It will cause IRQ storm when the correctly IRQ handler fails\r
599 // to run.\r
600 //\r
601 if (!(IS_PCI_VGA (&PciConfigHeader) ||\r
602 IS_PCI_OLD_VGA (&PciConfigHeader) ||\r
603 IS_PCI_IDE (&PciConfigHeader) ||\r
604 IS_PCI_P2P (&PciConfigHeader) ||\r
605 IS_PCI_P2P_SUB (&PciConfigHeader) ||\r
606 IS_PCI_LPC (&PciConfigHeader) )) {\r
607\r
608 PciConfigHeader.Hdr.Command |= 0x1f;\r
609\r
610 PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 4, 1, &PciConfigHeader.Hdr.Command);\r
611 }\r
612 }\r
613}\r
614\r
615/**\r
616 The following routines are identical in operation, so combine\r
617 for code compaction:\r
618 EfiGetPlatformBinaryGetMpTable\r
619 EfiGetPlatformBinaryGetOemIntData\r
620 EfiGetPlatformBinaryGetOem32Data\r
621 EfiGetPlatformBinaryGetOem16Data\r
622\r
623 @param This Protocol instance pointer.\r
624 @param Id Table/Data identifier\r
625\r
626 @retval EFI_SUCCESS Success\r
627 @retval EFI_INVALID_PARAMETER Invalid ID\r
628 @retval EFI_OUT_OF_RESOURCES no resource to get data or table\r
629\r
630**/\r
631EFI_STATUS\r
632LegacyGetDataOrTable (\r
633 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
634 IN EFI_GET_PLATFORM_INFO_MODE Id\r
635 )\r
636{\r
637 VOID *Table;\r
638 UINT32 TablePtr;\r
639 UINTN TableSize;\r
640 UINTN Alignment;\r
641 UINTN Location;\r
642 EFI_STATUS Status;\r
643 EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *LegacyBiosPlatform;\r
644 EFI_COMPATIBILITY16_TABLE *Legacy16Table;\r
645 EFI_IA32_REGISTER_SET Regs;\r
646 LEGACY_BIOS_INSTANCE *Private;\r
647\r
648 Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);\r
649\r
650 LegacyBiosPlatform = Private->LegacyBiosPlatform;\r
651 Legacy16Table = Private->Legacy16Table;\r
652\r
653 //\r
654 // Phase 1 - get an address allocated in 16-bit code\r
655 //\r
656 while (TRUE) {\r
657 switch (Id) {\r
658 case EfiGetPlatformBinaryMpTable:\r
659 case EfiGetPlatformBinaryOemIntData:\r
660 case EfiGetPlatformBinaryOem32Data:\r
661 case EfiGetPlatformBinaryOem16Data:\r
662 {\r
663 Status = LegacyBiosPlatform->GetPlatformInfo (\r
664 LegacyBiosPlatform,\r
665 Id,\r
666 (VOID *) &Table,\r
667 &TableSize,\r
668 &Location,\r
669 &Alignment,\r
670 0,\r
671 0\r
672 );\r
673 DEBUG ((EFI_D_INFO, "LegacyGetDataOrTable - ID: %x, %r\n", (UINTN)Id, Status));\r
674 DEBUG ((EFI_D_INFO, " Table - %x, Size - %x, Location - %x, Alignment - %x\n", (UINTN)Table, (UINTN)TableSize, (UINTN)Location, (UINTN)Alignment));\r
675 break;\r
676 }\r
677\r
678 default:\r
679 {\r
680 return EFI_INVALID_PARAMETER;\r
681 }\r
682 }\r
683\r
684 if (EFI_ERROR (Status)) {\r
685 return Status;\r
686 }\r
687\r
688 ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));\r
689 Regs.X.AX = Legacy16GetTableAddress;\r
690 Regs.X.CX = (UINT16) TableSize;\r
691 Regs.X.BX = (UINT16) Location;\r
692 Regs.X.DX = (UINT16) Alignment;\r
693 Private->LegacyBios.FarCall86 (\r
694 This,\r
695 Private->Legacy16CallSegment,\r
696 Private->Legacy16CallOffset,\r
697 &Regs,\r
698 NULL,\r
699 0\r
700 );\r
701\r
702 if (Regs.X.AX != 0) {\r
703 DEBUG ((EFI_D_ERROR, "Table ID %x length insufficient\n", Id));\r
704 return EFI_OUT_OF_RESOURCES;\r
705 } else {\r
706 break;\r
707 }\r
708 }\r
709 //\r
710 // Phase 2 Call routine second time with address to allow address adjustment\r
711 //\r
712 Status = LegacyBiosPlatform->GetPlatformInfo (\r
713 LegacyBiosPlatform,\r
714 Id,\r
715 (VOID *) &Table,\r
716 &TableSize,\r
717 &Location,\r
718 &Alignment,\r
719 Regs.X.DS,\r
720 Regs.X.BX\r
721 );\r
722 switch (Id) {\r
723 case EfiGetPlatformBinaryMpTable:\r
724 {\r
725 Legacy16Table->MpTablePtr = (UINT32) (Regs.X.DS * 16 + Regs.X.BX);\r
726 Legacy16Table->MpTableLength = (UINT32)TableSize;\r
727 DEBUG ((EFI_D_INFO, "MP table in legacy region - %x\n", (UINTN)Legacy16Table->MpTablePtr));\r
728 break;\r
729 }\r
730\r
731 case EfiGetPlatformBinaryOemIntData:\r
732 {\r
733\r
734 Legacy16Table->OemIntSegment = Regs.X.DS;\r
735 Legacy16Table->OemIntOffset = Regs.X.BX;\r
736 DEBUG ((EFI_D_INFO, "OemInt table in legacy region - %04x:%04x\n", (UINTN)Legacy16Table->OemIntSegment, (UINTN)Legacy16Table->OemIntOffset));\r
737 break;\r
738 }\r
739\r
740 case EfiGetPlatformBinaryOem32Data:\r
741 {\r
742 Legacy16Table->Oem32Segment = Regs.X.DS;\r
743 Legacy16Table->Oem32Offset = Regs.X.BX;\r
744 DEBUG ((EFI_D_INFO, "Oem32 table in legacy region - %04x:%04x\n", (UINTN)Legacy16Table->Oem32Segment, (UINTN)Legacy16Table->Oem32Offset));\r
745 break;\r
746 }\r
747\r
748 case EfiGetPlatformBinaryOem16Data:\r
749 {\r
750 //\r
751 // Legacy16Table->Oem16Segment = Regs.X.DS;\r
752 // Legacy16Table->Oem16Offset = Regs.X.BX;\r
753 DEBUG ((EFI_D_INFO, "Oem16 table in legacy region - %04x:%04x\n", (UINTN)Legacy16Table->Oem16Segment, (UINTN)Legacy16Table->Oem16Offset));\r
754 break;\r
755 }\r
756\r
757 default:\r
758 {\r
759 return EFI_INVALID_PARAMETER;\r
760 }\r
761 }\r
762\r
763 if (EFI_ERROR (Status)) {\r
764 return Status;\r
765 }\r
766 //\r
767 // Phase 3 Copy table to final location\r
768 //\r
769 TablePtr = (UINT32) (Regs.X.DS * 16 + Regs.X.BX);\r
770\r
771 CopyMem (\r
772 (VOID *) (UINTN)TablePtr,\r
773 Table,\r
774 TableSize\r
775 );\r
776\r
777 return EFI_SUCCESS;\r
778}\r
779\r
780\r
781/**\r
782 Assign drive number to legacy HDD drives prior to booting an EFI\r
783 aware OS so the OS can access drives without an EFI driver.\r
784 Note: BBS compliant drives ARE NOT available until this call by\r
785 either shell or EFI.\r
786\r
787 @param This Protocol instance pointer.\r
788\r
789 @retval EFI_SUCCESS Drive numbers assigned\r
790\r
791**/\r
792EFI_STATUS\r
793GenericLegacyBoot (\r
794 IN EFI_LEGACY_BIOS_PROTOCOL *This\r
795 )\r
796{\r
797 EFI_STATUS Status;\r
798 LEGACY_BIOS_INSTANCE *Private;\r
799 EFI_IA32_REGISTER_SET Regs;\r
800 EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;\r
801 EFI_LEGACY_BIOS_PLATFORM_PROTOCOL *LegacyBiosPlatform;\r
802 UINTN CopySize;\r
803 VOID *AcpiPtr;\r
804 HDD_INFO *HddInfo;\r
805 HDD_INFO *LocalHddInfo;\r
806 UINTN Index;\r
807 EFI_COMPATIBILITY16_TABLE *Legacy16Table;\r
808 UINT32 *BdaPtr;\r
809 UINT16 HddCount;\r
810 UINT16 BbsCount;\r
811 BBS_TABLE *LocalBbsTable;\r
812 UINT32 *BaseVectorMaster;\r
813 EFI_TIME BootTime;\r
814 UINT32 LocalTime;\r
815 EFI_HANDLE IdeController;\r
816 UINTN HandleCount;\r
817 EFI_HANDLE *HandleBuffer;\r
818 VOID *SmbiosTable;\r
819 VOID *AcpiTable;\r
820 UINTN ShadowAddress;\r
821 UINT32 Granularity;\r
bcecde14 822\r
823 LocalHddInfo = NULL;\r
824 HddCount = 0;\r
825 BbsCount = 0;\r
826 LocalBbsTable = NULL;\r
bcecde14 827\r
828 Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);\r
829 DEBUG_CODE (\r
830 DEBUG ((EFI_D_ERROR, "Start of legacy boot\n"));\r
831 );\r
832\r
833 Legacy16Table = Private->Legacy16Table;\r
834 EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;\r
835 HddInfo = &EfiToLegacy16BootTable->HddInfo[0];\r
836\r
837 LegacyBiosPlatform = Private->LegacyBiosPlatform;\r
838\r
839 EfiToLegacy16BootTable->MajorVersion = EFI_TO_LEGACY_MAJOR_VERSION;\r
840 EfiToLegacy16BootTable->MinorVersion = EFI_TO_LEGACY_MINOR_VERSION;\r
bcecde14 841 \r
842 //\r
843 // If booting to a legacy OS then force HDD drives to the appropriate\r
844 // boot mode by calling GetIdeHandle.\r
845 // A reconnect -r can force all HDDs back to native mode.\r
846 //\r
847 IdeController = NULL;\r
848 if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {\r
849 Status = LegacyBiosPlatform->GetPlatformHandle (\r
850 Private->LegacyBiosPlatform,\r
851 EfiGetPlatformIdeHandle,\r
852 0,\r
853 &HandleBuffer,\r
854 &HandleCount,\r
855 NULL\r
856 );\r
857 if (!EFI_ERROR (Status)) {\r
858 IdeController = HandleBuffer[0];\r
859 } \r
860 }\r
861 //\r
862 // Unlock the Legacy BIOS region\r
863 //\r
864 Private->LegacyRegion->UnLock (\r
865 Private->LegacyRegion,\r
866 0xE0000,\r
867 0x20000,\r
868 &Granularity\r
869 );\r
870\r
871 //\r
872 // Reconstruct the Legacy16 boot memory map\r
873 //\r
874 LegacyBiosBuildE820 (Private, &CopySize);\r
875 if (CopySize > Private->Legacy16Table->E820Length) {\r
876 ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));\r
877 Regs.X.AX = Legacy16GetTableAddress;\r
878 Regs.X.CX = (UINT16) CopySize;\r
879 Private->LegacyBios.FarCall86 (\r
880 &Private->LegacyBios,\r
881 Private->Legacy16Table->Compatibility16CallSegment,\r
882 Private->Legacy16Table->Compatibility16CallOffset,\r
883 &Regs,\r
884 NULL,\r
885 0\r
886 );\r
887\r
888 Private->Legacy16Table->E820Pointer = (UINT32) (Regs.X.DS * 16 + Regs.X.BX);\r
889 Private->Legacy16Table->E820Length = (UINT32) CopySize;\r
890 if (Regs.X.AX != 0) {\r
891 DEBUG ((EFI_D_ERROR, "Legacy16 E820 length insufficient\n"));\r
892 } else {\r
893 CopyMem (\r
894 (VOID *)(UINTN) Private->Legacy16Table->E820Pointer,\r
895 Private->E820Table,\r
896 CopySize\r
897 );\r
898 }\r
899 } else {\r
900 CopyMem (\r
901 (VOID *)(UINTN) Private->Legacy16Table->E820Pointer,\r
902 Private->E820Table,\r
903 CopySize\r
904 );\r
905 Private->Legacy16Table->E820Length = (UINT32) CopySize;\r
906 }\r
907 //\r
908 // Get SMBIOS and ACPI table pointers\r
909 //\r
910 SmbiosTable = NULL;\r
911 EfiGetSystemConfigurationTable (\r
912 &gEfiSmbiosTableGuid,\r
913 &SmbiosTable\r
914 );\r
915 //\r
916 // We do not ASSERT if SmbiosTable not found. It is possbile that a platform does not produce SmbiosTable.\r
917 //\r
918 if (SmbiosTable == NULL) {\r
919 DEBUG ((EFI_D_INFO, "Smbios table is not found!\n"));\r
920 }\r
921 EfiToLegacy16BootTable->SmbiosTable = (UINT32)(UINTN)SmbiosTable;\r
922\r
923 AcpiTable = NULL;\r
924 Status = EfiGetSystemConfigurationTable (\r
925 &gEfiAcpi20TableGuid,\r
926 &AcpiTable\r
927 );\r
928 if (EFI_ERROR (Status)) {\r
929 Status = EfiGetSystemConfigurationTable (\r
930 &gEfiAcpi10TableGuid,\r
931 &AcpiTable\r
932 );\r
933 }\r
934 //\r
935 // We do not ASSERT if AcpiTable not found. It is possbile that a platform does not produce AcpiTable.\r
936 //\r
937 if (AcpiTable == NULL) {\r
938 DEBUG ((EFI_D_INFO, "ACPI table is not found!\n"));\r
939 }\r
940 EfiToLegacy16BootTable->AcpiTable = (UINT32)(UINTN)AcpiTable;\r
941\r
942 //\r
943 // Get RSD Ptr table rev at offset 15 decimal\r
944 // Rev = 0 Length is 20 decimal\r
945 // Rev != 0 Length is UINT32 at offset 20 decimal\r
946 //\r
947 if (AcpiTable != NULL) {\r
948\r
949 AcpiPtr = AcpiTable;\r
950 if (*((UINT8 *) AcpiPtr + 15) == 0) {\r
951 CopySize = 20;\r
952 } else {\r
953 AcpiPtr = ((UINT8 *) AcpiPtr + 20);\r
954 CopySize = (*(UINT32 *) AcpiPtr);\r
955 }\r
956\r
957 CopyMem (\r
958 (VOID *)(UINTN) Private->Legacy16Table->AcpiRsdPtrPointer,\r
959 AcpiTable,\r
960 CopySize\r
961 );\r
962 }\r
963 //\r
964 // Make sure all PCI Interrupt Line register are programmed to match 8259\r
965 //\r
966 PciProgramAllInterruptLineRegisters (Private);\r
967\r
968 //\r
969 // Unlock the Legacy BIOS region as PciProgramAllInterruptLineRegisters\r
970 // can lock it.\r
971 //\r
972 Private->LegacyRegion->UnLock (\r
973 Private->LegacyRegion,\r
974 Private->BiosStart,\r
975 Private->LegacyBiosImageSize,\r
976 &Granularity\r
977 );\r
978\r
979 //\r
980 // Configure Legacy Device Magic\r
981 //\r
982 // Only do this code if booting legacy OS\r
983 //\r
984 if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {\r
985 UpdateSioData (Private);\r
986 }\r
987 //\r
988 // Setup BDA and EBDA standard areas before Legacy Boot\r
989 //\r
990 LegacyBiosCompleteBdaBeforeBoot (Private);\r
991 LegacyBiosCompleteStandardCmosBeforeBoot (Private);\r
992\r
993 //\r
994 // We must build IDE data, if it hasn't been done, before PciShadowRoms\r
995 // to insure EFI drivers are connected.\r
996 //\r
997 LegacyBiosBuildIdeData (Private, &HddInfo, 1);\r
998 UpdateAllIdentifyDriveData (Private);\r
999\r
1000 //\r
1001 // Clear IO BAR, if IDE controller in legacy mode.\r
1002 //\r
1003 InitLegacyIdeController (IdeController);\r
1004\r
1005 //\r
1006 // Generate number of ticks since midnight for BDA. DOS requires this\r
1007 // for its time. We have to make assumptions as to how long following\r
1008 // code takes since after PciShadowRoms PciIo is gone. Place result in\r
1009 // 40:6C-6F\r
1010 //\r
1011 // Adjust value by 1 second.\r
1012 //\r
1013 gRT->GetTime (&BootTime, NULL);\r
1014 LocalTime = BootTime.Hour * 3600 + BootTime.Minute * 60 + BootTime.Second;\r
1015 LocalTime += 1;\r
1016\r
1017 //\r
1018 // Multiply result by 18.2 for number of ticks since midnight.\r
1019 // Use 182/10 to avoid floating point math.\r
1020 //\r
1021 LocalTime = (LocalTime * 182) / 10;\r
1022 BdaPtr = (UINT32 *) (UINTN)0x46C;\r
1023 *BdaPtr = LocalTime;\r
1024\r
1025 //\r
1026 // Shadow PCI ROMs. We must do this near the end since this will kick\r
1027 // of Native EFI drivers that may be needed to collect info for Legacy16\r
1028 //\r
1029 // WARNING: PciIo is gone after this call.\r
1030 //\r
1031 PciShadowRoms (Private);\r
1032\r
1033 //\r
1034 // Shadow PXE base code, BIS etc.\r
1035 //\r
1036 Private->LegacyRegion->UnLock (Private->LegacyRegion, 0xc0000, 0x40000, &Granularity);\r
1037 ShadowAddress = Private->OptionRom;\r
1038 Private->LegacyBiosPlatform->PlatformHooks (\r
1039 Private->LegacyBiosPlatform,\r
1040 EfiPlatformHookShadowServiceRoms,\r
1041 0,\r
1042 0,\r
1043 &ShadowAddress,\r
1044 Legacy16Table,\r
1045 NULL\r
1046 );\r
1047 Private->OptionRom = (UINT32)ShadowAddress;\r
1048 //\r
1049 // Register Legacy SMI Handler\r
1050 //\r
1051 LegacyBiosPlatform->SmmInit (\r
1052 LegacyBiosPlatform,\r
1053 EfiToLegacy16BootTable\r
1054 );\r
1055\r
1056 //\r
1057 // Let platform code know the boot options\r
1058 //\r
1059 LegacyBiosGetBbsInfo (\r
1060 This,\r
1061 &HddCount,\r
1062 &LocalHddInfo,\r
1063 &BbsCount,\r
1064 &LocalBbsTable\r
1065 );\r
1066\r
7dad86fc
RN		 1067 DEBUG_CODE (\r
1068 PrintPciInterruptRegister ();\r
1069 PrintBbsTable (LocalBbsTable);\r
1070 PrintHddInfo (LocalHddInfo);\r
1071 );\r
bcecde14 1072 //\r
1073 // If drive wasn't spun up then BuildIdeData may have found new drives.\r
1074 // Need to update BBS boot priority.\r
1075 //\r
1076 for (Index = 0; Index < MAX_IDE_CONTROLLER; Index++) {\r
1077 if ((LocalHddInfo[Index].IdentifyDrive[0].Raw[0] != 0) &&\r
1078 (LocalBbsTable[2 * Index + 1].BootPriority == BBS_IGNORE_ENTRY)\r
1079 ) {\r
1080 LocalBbsTable[2 * Index + 1].BootPriority = BBS_UNPRIORITIZED_ENTRY;\r
1081 }\r
1082\r
1083 if ((LocalHddInfo[Index].IdentifyDrive[1].Raw[0] != 0) &&\r
1084 (LocalBbsTable[2 * Index + 2].BootPriority == BBS_IGNORE_ENTRY)\r
1085 ) {\r
1086 LocalBbsTable[2 * Index + 2].BootPriority = BBS_UNPRIORITIZED_ENTRY;\r
1087 }\r
1088 }\r
1089\r
1090 Private->LegacyRegion->UnLock (\r
1091 Private->LegacyRegion,\r
1092 0xc0000,\r
1093 0x40000,\r
1094 &Granularity\r
1095 );\r
1096\r
1097 LegacyBiosPlatform->PrepareToBoot (\r
1098 LegacyBiosPlatform,\r
1099 mBbsDevicePathPtr,\r
1100 mBbsTable,\r
1101 mLoadOptionsSize,\r
1102 mLoadOptions,\r
1103 (VOID *) &Private->IntThunk->EfiToLegacy16BootTable\r
1104 );\r
1105\r
1106 //\r
1107 // If no boot device return to BDS\r
1108 //\r
1109 if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {\r
1110 for (Index = 0; Index < BbsCount; Index++){\r
1111 if ((LocalBbsTable[Index].BootPriority != BBS_DO_NOT_BOOT_FROM) &&\r
1112 (LocalBbsTable[Index].BootPriority != BBS_UNPRIORITIZED_ENTRY) &&\r
1113 (LocalBbsTable[Index].BootPriority != BBS_IGNORE_ENTRY)) {\r
1114 break;\r
1115 }\r
1116 }\r
1117 if (Index == BbsCount) {\r
1118 return EFI_DEVICE_ERROR;\r
1119 }\r
1120 }\r
1121 //\r
1122 // Let the Legacy16 code know the device path type for legacy boot\r
1123 //\r
1124 EfiToLegacy16BootTable->DevicePathType = mBbsDevicePathPtr->DeviceType;\r
1125\r
1126 //\r
1127 // Copy MP table, if it exists.\r
1128 //\r
1129 LegacyGetDataOrTable (This, EfiGetPlatformBinaryMpTable);\r
1130\r
1131 if (!Private->LegacyBootEntered) {\r
1132 //\r
1133 // Copy OEM INT Data, if it exists. Note: This code treats any data\r
1134 // as a bag of bits and knows nothing of the contents nor cares.\r
1135 // Contents are IBV specific.\r
1136 //\r
1137 LegacyGetDataOrTable (This, EfiGetPlatformBinaryOemIntData);\r
1138\r
1139 //\r
1140 // Copy OEM16 Data, if it exists.Note: This code treats any data\r
1141 // as a bag of bits and knows nothing of the contents nor cares.\r
1142 // Contents are IBV specific.\r
1143 //\r
1144 LegacyGetDataOrTable (This, EfiGetPlatformBinaryOem16Data);\r
1145\r
1146 //\r
1147 // Copy OEM32 Data, if it exists.Note: This code treats any data\r
1148 // as a bag of bits and knows nothing of the contents nor cares.\r
1149 // Contents are IBV specific.\r
1150 //\r
1151 LegacyGetDataOrTable (This, EfiGetPlatformBinaryOem32Data);\r
1152 }\r
1153\r
1154 //\r
1155 // Call into Legacy16 code to prepare for INT 19h\r
1156 //\r
1157 ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));\r
1158 Regs.X.AX = Legacy16PrepareToBoot;\r
1159\r
1160 //\r
1161 // Pass in handoff data\r
1162 //\r
81c0d6e9 1163 Regs.X.ES = NORMALIZE_EFI_SEGMENT ((UINTN)EfiToLegacy16BootTable);\r
1164 Regs.X.BX = NORMALIZE_EFI_OFFSET ((UINTN)EfiToLegacy16BootTable);\r
bcecde14 1165\r
1166 Private->LegacyBios.FarCall86 (\r
1167 This,\r
1168 Private->Legacy16CallSegment,\r
1169 Private->Legacy16CallOffset,\r
1170 &Regs,\r
1171 NULL,\r
1172 0\r
1173 );\r
1174\r
1175 if (Regs.X.AX != 0) {\r
1176 return EFI_DEVICE_ERROR;\r
1177 }\r
1178 //\r
1179 // Lock the Legacy BIOS region\r
1180 //\r
1181 Private->LegacyRegion->Lock (\r
1182 Private->LegacyRegion,\r
1183 0xc0000,\r
1184 0x40000,\r
1185 &Granularity\r
1186 );\r
1187 //\r
1188 // Lock attributes of the Legacy Region if chipset supports\r
1189 //\r
1190 Private->LegacyRegion->BootLock (\r
1191 Private->LegacyRegion,\r
1192 0xc0000,\r
1193 0x40000,\r
1194 &Granularity\r
1195 );\r
1196\r
1197 //\r
1198 // Call into Legacy16 code to do the INT 19h\r
1199 //\r
1200 EnableAllControllers (Private);\r
1201 if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {\r
cb38c322 1202 //\r
1203 // Report Status Code to indicate legacy boot event will be signalled\r
1204 //\r
1205 REPORT_STATUS_CODE (\r
1206 EFI_PROGRESS_CODE,\r
1207 (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_DXE_BS_PC_LEGACY_BOOT_EVENT)\r
1208 );\r
1209\r
bcecde14 1210 //\r
1211 // Signal all the events that are waiting on EVT_SIGNAL_LEGACY_BOOT\r
1212 //\r
1213 EfiSignalEventLegacyBoot ();\r
1214 DEBUG ((EFI_D_INFO, "Legacy INT19 Boot...\n"));\r
3512efa9 1215\r
1216 //\r
1217 // Disable DXE Timer while executing in real mode\r
bcecde14 1218 //\r
3512efa9 1219 Private->Timer->SetTimerPeriod (Private->Timer, 0);\r
1220 \r
bcecde14 1221 //\r
3512efa9 1222 // Save and disable interrupt of debug timer\r
1223 //\r
1224 SaveAndSetDebugTimerInterrupt (FALSE);\r
1225\r
bcecde14 1226\r
1227 //\r
1228 // Put the 8259 into its legacy mode by reprogramming the vector bases\r
1229 //\r
1230 Private->Legacy8259->SetVectorBase (Private->Legacy8259, LEGACY_MODE_BASE_VECTOR_MASTER, LEGACY_MODE_BASE_VECTOR_SLAVE);\r
1231 //\r
1232 // PC History\r
1233 // The original PC used INT8-F for master PIC. Since these mapped over\r
1234 // processor exceptions TIANO moved the master PIC to INT68-6F.\r
1235 // We need to set these back to the Legacy16 unexpected interrupt(saved\r
1236 // in LegacyBios.c) since some OS see that these have values different from\r
1237 // what is expected and invoke them. Since the legacy OS corrupts EFI\r
1238 // memory, there is no handler for these interrupts and OS blows up.\r
1239 //\r
1240 // We need to save the TIANO values for the rare case that the Legacy16\r
1241 // code cannot boot but knows memory hasn't been destroyed.\r
1242 //\r
1243 // To compound the problem, video takes over one of these INTS and must be\r
1244 // be left.\r
1245 // @bug - determine if video hooks INT(in which case we must find new\r
1246 // set of TIANO vectors) or takes it over.\r
1247 //\r
1248 //\r
1249 BaseVectorMaster = (UINT32 *) (sizeof (UINT32) * PROTECTED_MODE_BASE_VECTOR_MASTER);\r
1250 for (Index = 0; Index < 8; Index++) {\r
1251 Private->ThunkSavedInt[Index] = BaseVectorMaster[Index];\r
1252 if (Private->ThunkSeg == (UINT16) (BaseVectorMaster[Index] >> 16)) {\r
1253 BaseVectorMaster[Index] = (UINT32) (Private->BiosUnexpectedInt);\r
1254 }\r
1255 }\r
1256\r
1257 ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));\r
1258 Regs.X.AX = Legacy16Boot;\r
1259\r
1260 Private->LegacyBios.FarCall86 (\r
1261 This,\r
1262 Private->Legacy16CallSegment,\r
1263 Private->Legacy16CallOffset,\r
1264 &Regs,\r
1265 NULL,\r
1266 0\r
1267 );\r
1268\r
1269 BaseVectorMaster = (UINT32 *) (sizeof (UINT32) * PROTECTED_MODE_BASE_VECTOR_MASTER);\r
1270 for (Index = 0; Index < 8; Index++) {\r
1271 BaseVectorMaster[Index] = Private->ThunkSavedInt[Index];\r
1272 }\r
1273 }\r
1274 Private->LegacyBootEntered = TRUE;\r
1275 if ((mBootMode == BOOT_LEGACY_OS) || (mBootMode == BOOT_UNCONVENTIONAL_DEVICE)) {\r
1276 //\r
1277 // Should never return unless never passed control to 0:7c00(first stage\r
1278 // OS loader) and only then if no bootable device found.\r
1279 //\r
1280 return EFI_DEVICE_ERROR;\r
1281 } else {\r
1282 //\r
1283 // If boot to EFI then expect to return to caller\r
1284 //\r
1285 return EFI_SUCCESS;\r
1286 }\r
1287}\r
1288\r
1289\r
1290/**\r
1291 Assign drive number to legacy HDD drives prior to booting an EFI\r
1292 aware OS so the OS can access drives without an EFI driver.\r
1293 Note: BBS compliant drives ARE NOT available until this call by\r
1294 either shell or EFI.\r
1295\r
1296 @param This Protocol instance pointer.\r
1297 @param BbsCount Number of BBS_TABLE structures\r
1298 @param BbsTable List BBS entries\r
1299\r
1300 @retval EFI_SUCCESS Drive numbers assigned\r
1301\r
1302**/\r
1303EFI_STATUS\r
1304EFIAPI\r
1305LegacyBiosPrepareToBootEfi (\r
1306 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
1307 OUT UINT16 *BbsCount,\r
1308 OUT BBS_TABLE **BbsTable\r
1309 )\r
1310{\r
1311 EFI_STATUS Status;\r
1312 EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;\r
1313 LEGACY_BIOS_INSTANCE *Private;\r
1314\r
1315 Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);\r
1316 EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;\r
1317 mBootMode = BOOT_EFI_OS;\r
1318 mBbsDevicePathPtr = NULL;\r
1319 Status = GenericLegacyBoot (This);\r
1320 *BbsTable = (BBS_TABLE*)(UINTN)EfiToLegacy16BootTable->BbsTable;\r
1321 *BbsCount = (UINT16) (sizeof (Private->IntThunk->BbsTable) / sizeof (BBS_TABLE));\r
1322 return Status;\r
1323}\r
1324\r
1325/**\r
1326 To boot from an unconventional device like parties and/or execute HDD diagnostics.\r
1327\r
1328 @param This Protocol instance pointer.\r
1329 @param Attributes How to interpret the other input parameters\r
1330 @param BbsEntry The 0-based index into the BbsTable for the parent\r
1331 device.\r
1332 @param BeerData Pointer to the 128 bytes of ram BEER data.\r
1333 @param ServiceAreaData Pointer to the 64 bytes of raw Service Area data. The\r
1334 caller must provide a pointer to the specific Service\r
1335 Area and not the start all Service Areas.\r
1336\r
1337 @retval EFI_INVALID_PARAMETER if error. Does NOT return if no error.\r
1338\r
1339***/\r
1340EFI_STATUS\r
1341EFIAPI\r
1342LegacyBiosBootUnconventionalDevice (\r
1343 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
1344 IN UDC_ATTRIBUTES Attributes,\r
1345 IN UINTN BbsEntry,\r
1346 IN VOID *BeerData,\r
1347 IN VOID *ServiceAreaData\r
1348 )\r
1349{\r
1350 EFI_STATUS Status;\r
1351 EFI_TO_COMPATIBILITY16_BOOT_TABLE *EfiToLegacy16BootTable;\r
1352 LEGACY_BIOS_INSTANCE *Private;\r
1353 UD_TABLE *UcdTable;\r
1354 UINTN Index;\r
1355 UINT16 BootPriority;\r
1356 BBS_TABLE *BbsTable;\r
1357\r
1358 BootPriority = 0;\r
1359 Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);\r
1360 mBootMode = BOOT_UNCONVENTIONAL_DEVICE;\r
1361 mBbsDevicePathPtr = &mBbsDevicePathNode;\r
1362 mAttributes = Attributes;\r
1363 mBbsEntry = BbsEntry;\r
1364 mBeerData = BeerData, mServiceAreaData = ServiceAreaData;\r
1365\r
1366 EfiToLegacy16BootTable = &Private->IntThunk->EfiToLegacy16BootTable;\r
1367\r
1368 //\r
1369 // Do input parameter checking\r
1370 //\r
1371 if ((Attributes.DirectoryServiceValidity == 0) &&\r
1372 (Attributes.RabcaUsedFlag == 0) &&\r
1373 (Attributes.ExecuteHddDiagnosticsFlag == 0)\r
1374 ) {\r
1375 return EFI_INVALID_PARAMETER;\r
1376 }\r
1377\r
1378 if (((Attributes.DirectoryServiceValidity != 0) && (ServiceAreaData == NULL)) ||\r
1379 (((Attributes.DirectoryServiceValidity | Attributes.RabcaUsedFlag) != 0) && (BeerData == NULL))\r
1380 ) {\r
1381 return EFI_INVALID_PARAMETER;\r
1382 }\r
1383\r
1384 UcdTable = (UD_TABLE *) AllocatePool (\r
1385 sizeof (UD_TABLE)\r
1386 );\r
1387 if (NULL == UcdTable) {\r
1388 return EFI_OUT_OF_RESOURCES;\r
1389 }\r
1390\r
1391 EfiToLegacy16BootTable->UnconventionalDeviceTable = (UINT32)(UINTN)UcdTable;\r
1392 UcdTable->Attributes = Attributes;\r
1393 UcdTable->BbsTableEntryNumberForParentDevice = (UINT8) BbsEntry;\r
1394 //\r
1395 // Force all existing BBS entries to DoNotBoot. This allows 16-bit CSM\r
1396 // to assign drive numbers but bot boot from. Only newly created entries\r
1397 // will be valid.\r
1398 //\r
1399 BbsTable = (BBS_TABLE*)(UINTN)EfiToLegacy16BootTable->BbsTable;\r
1400 for (Index = 0; Index < EfiToLegacy16BootTable->NumberBbsEntries; Index++) {\r
1401 BbsTable[Index].BootPriority = BBS_DO_NOT_BOOT_FROM;\r
1402 }\r
1403 //\r
1404 // If parent is onboard IDE then assign controller & device number\r
1405 // else they are 0.\r
1406 //\r
1407 if (BbsEntry < MAX_IDE_CONTROLLER * 2) {\r
1408 UcdTable->DeviceNumber = (UINT8) ((BbsEntry - 1) % 2);\r
1409 }\r
1410\r
1411 if (BeerData != NULL) {\r
1412 CopyMem (\r
1413 (VOID *) UcdTable->BeerData,\r
1414 BeerData,\r
1415 (UINTN) 128\r
1416 );\r
1417 }\r
1418\r
1419 if (ServiceAreaData != NULL) {\r
1420 CopyMem (\r
1421 (VOID *) UcdTable->ServiceAreaData,\r
1422 ServiceAreaData,\r
1423 (UINTN) 64\r
1424 );\r
1425 }\r
1426 //\r
1427 // For each new entry do the following:\r
1428 // 1. Increment current number of BBS entries\r
1429 // 2. Copy parent entry to new entry.\r
1430 // 3. Zero out BootHandler Offset & segment\r
1431 // 4. Set appropriate device type. BEV(0x80) for HDD diagnostics\r
1432 // and Floppy(0x01) for PARTIES boot.\r
1433 // 5. Assign new priority.\r
1434 //\r
1435 if ((Attributes.ExecuteHddDiagnosticsFlag) != 0) {\r
1436 EfiToLegacy16BootTable->NumberBbsEntries += 1;\r
1437\r
1438 CopyMem (\r
1439 (VOID *) &BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootPriority,\r
1440 (VOID *) &BbsTable[BbsEntry].BootPriority,\r
1441 sizeof (BBS_TABLE)\r
1442 );\r
1443\r
1444 BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootHandlerOffset = 0;\r
1445 BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootHandlerSegment = 0;\r
1446 BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].DeviceType = 0x80;\r
1447\r
1448 UcdTable->BbsTableEntryNumberForHddDiag = (UINT8) (EfiToLegacy16BootTable->NumberBbsEntries - 1);\r
1449\r
1450 BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootPriority = BootPriority;\r
1451 BootPriority += 1;\r
1452\r
1453 //\r
1454 // Set device type as BBS_TYPE_DEV for PARTIES diagnostic\r
1455 //\r
1456 mBbsDevicePathNode.DeviceType = BBS_TYPE_BEV;\r
1457 }\r
1458\r
1459 if (((Attributes.DirectoryServiceValidity | Attributes.RabcaUsedFlag)) != 0) {\r
1460 EfiToLegacy16BootTable->NumberBbsEntries += 1;\r
1461 CopyMem (\r
1462 (VOID *) &BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootPriority,\r
1463 (VOID *) &BbsTable[BbsEntry].BootPriority,\r
1464 sizeof (BBS_TABLE)\r
1465 );\r
1466\r
1467 BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootHandlerOffset = 0;\r
1468 BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootHandlerSegment = 0;\r
1469 BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].DeviceType = 0x01;\r
1470 UcdTable->BbsTableEntryNumberForBoot = (UINT8) (EfiToLegacy16BootTable->NumberBbsEntries - 1);\r
1471 BbsTable[EfiToLegacy16BootTable->NumberBbsEntries].BootPriority = BootPriority;\r
1472\r
1473 //\r
1474 // Set device type as BBS_TYPE_FLOPPY for PARTIES boot as floppy\r
1475 //\r
1476 mBbsDevicePathNode.DeviceType = BBS_TYPE_FLOPPY;\r
1477 }\r
1478 //\r
1479 // Build the BBS Device Path for this boot selection\r
1480 //\r
1481 mBbsDevicePathNode.Header.Type = BBS_DEVICE_PATH;\r
1482 mBbsDevicePathNode.Header.SubType = BBS_BBS_DP;\r
1483 SetDevicePathNodeLength (&mBbsDevicePathNode.Header, sizeof (BBS_BBS_DEVICE_PATH));\r
1484 mBbsDevicePathNode.StatusFlag = 0;\r
1485 mBbsDevicePathNode.String[0] = 0;\r
1486\r
1487 Status = GenericLegacyBoot (This);\r
1488 return Status;\r
1489}\r
1490\r
1491/**\r
1492 Attempt to legacy boot the BootOption. If the EFI contexted has been\r
1493 compromised this function will not return.\r
1494\r
1495 @param This Protocol instance pointer.\r
1496 @param BbsDevicePath EFI Device Path from BootXXXX variable.\r
1497 @param LoadOptionsSize Size of LoadOption in size.\r
1498 @param LoadOptions LoadOption from BootXXXX variable\r
1499\r
1500 @retval EFI_SUCCESS Removable media not present\r
1501\r
1502**/\r
1503EFI_STATUS\r
1504EFIAPI\r
1505LegacyBiosLegacyBoot (\r
1506 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
1507 IN BBS_BBS_DEVICE_PATH *BbsDevicePath,\r
1508 IN UINT32 LoadOptionsSize,\r
1509 IN VOID *LoadOptions\r
1510 )\r
1511{\r
1512 EFI_STATUS Status;\r
1513\r
1514 mBbsDevicePathPtr = BbsDevicePath;\r
1515 mLoadOptionsSize = LoadOptionsSize;\r
1516 mLoadOptions = LoadOptions;\r
1517 mBootMode = BOOT_LEGACY_OS;\r
1518 Status = GenericLegacyBoot (This);\r
1519\r
1520 return Status;\r
1521}\r
1522\r
1523/**\r
1524 Convert EFI Memory Type to E820 Memory Type.\r
1525\r
1526 @param Type EFI Memory Type\r
1527\r
1528 @return ACPI Memory Type for EFI Memory Type\r
1529\r
1530**/\r
1531EFI_ACPI_MEMORY_TYPE\r
1532EfiMemoryTypeToE820Type (\r
1533 IN UINT32 Type\r
1534 )\r
1535{\r
1536 switch (Type) {\r
1537 case EfiLoaderCode:\r
1538 case EfiLoaderData:\r
1539 case EfiBootServicesCode:\r
1540 case EfiBootServicesData:\r
1541 case EfiConventionalMemory:\r
1542 case EfiRuntimeServicesCode:\r
1543 case EfiRuntimeServicesData:\r
1544 return EfiAcpiAddressRangeMemory;\r
1545\r
1546 case EfiACPIReclaimMemory:\r
1547 return EfiAcpiAddressRangeACPI;\r
1548\r
1549 case EfiACPIMemoryNVS:\r
1550 return EfiAcpiAddressRangeNVS;\r
1551\r
1552 //\r
1553 // All other types map to reserved.\r
1554 // Adding the code just waists FLASH space.\r
1555 //\r
1556 // case EfiReservedMemoryType:\r
1557 // case EfiUnusableMemory:\r
1558 // case EfiMemoryMappedIO:\r
1559 // case EfiMemoryMappedIOPortSpace:\r
1560 // case EfiPalCode:\r
1561 //\r
1562 default:\r
1563 return EfiAcpiAddressRangeReserved;\r
1564 }\r
1565}\r
1566\r
1567/**\r
1568 Build the E820 table.\r
1569\r
1570 @param Private Legacy BIOS Instance data\r
1571 @param Size Size of E820 Table\r
1572\r
1573 @retval EFI_SUCCESS It should always work.\r
1574\r
1575**/\r
1576EFI_STATUS\r
1577LegacyBiosBuildE820 (\r
1578 IN LEGACY_BIOS_INSTANCE *Private,\r
1579 OUT UINTN *Size\r
1580 )\r
1581{\r
1582 EFI_STATUS Status;\r
1583 EFI_E820_ENTRY64 *E820Table;\r
1584 EFI_MEMORY_DESCRIPTOR *EfiMemoryMap;\r
1585 EFI_MEMORY_DESCRIPTOR *EfiMemoryMapEnd;\r
1586 EFI_MEMORY_DESCRIPTOR *EfiEntry;\r
1587 EFI_MEMORY_DESCRIPTOR *NextEfiEntry;\r
1588 EFI_MEMORY_DESCRIPTOR TempEfiEntry;\r
1589 UINTN EfiMemoryMapSize;\r
1590 UINTN EfiMapKey;\r
1591 UINTN EfiDescriptorSize;\r
1592 UINT32 EfiDescriptorVersion;\r
1593 UINTN Index;\r
1594 EFI_PEI_HOB_POINTERS Hob;\r
1595 EFI_HOB_RESOURCE_DESCRIPTOR *ResourceHob;\r
1596 UINTN TempIndex;\r
1597 UINTN IndexSort;\r
1598 UINTN TempNextIndex;\r
1599 EFI_E820_ENTRY64 TempE820;\r
1600 EFI_ACPI_MEMORY_TYPE TempType;\r
1601 BOOLEAN ChangedFlag;\r
1602 UINTN Above1MIndex;\r
1603 UINT64 MemoryBlockLength;\r
1604\r
1605 E820Table = (EFI_E820_ENTRY64 *) Private->E820Table;\r
1606\r
1607 //\r
1608 // Get the EFI memory map.\r
1609 //\r
1610 EfiMemoryMapSize = 0;\r
1611 EfiMemoryMap = NULL;\r
1612 Status = gBS->GetMemoryMap (\r
1613 &EfiMemoryMapSize,\r
1614 EfiMemoryMap,\r
1615 &EfiMapKey,\r
1616 &EfiDescriptorSize,\r
1617 &EfiDescriptorVersion\r
1618 );\r
1619 ASSERT (Status == EFI_BUFFER_TOO_SMALL);\r
1620\r
1621 do {\r
1622 //\r
1623 // Use size returned back plus 1 descriptor for the AllocatePool.\r
1624 // We don't just multiply by 2 since the "for" loop below terminates on\r
1625 // EfiMemoryMapEnd which is dependent upon EfiMemoryMapSize. Otherwize\r
1626 // we process bogus entries and create bogus E820 entries.\r
1627 //\r
1628 EfiMemoryMap = (EFI_MEMORY_DESCRIPTOR *) AllocatePool (EfiMemoryMapSize);\r
1629 ASSERT (EfiMemoryMap != NULL);\r
1630 Status = gBS->GetMemoryMap (\r
1631 &EfiMemoryMapSize,\r
1632 EfiMemoryMap,\r
1633 &EfiMapKey,\r
1634 &EfiDescriptorSize,\r
1635 &EfiDescriptorVersion\r
1636 );\r
1637 if (EFI_ERROR (Status)) {\r
1638 FreePool (EfiMemoryMap);\r
1639 }\r
1640 } while (Status == EFI_BUFFER_TOO_SMALL);\r
1641\r
1642 ASSERT_EFI_ERROR (Status);\r
1643\r
1644 //\r
1645 // Punch in the E820 table for memory less than 1 MB.\r
1646 // Assume ZeroMem () has been done on data structure.\r
1647 //\r
1648 //\r
1649 // First entry is 0 to (640k - EBDA)\r
1650 //\r
1651 E820Table[0].BaseAddr = 0;\r
1652 E820Table[0].Length = (UINT64) ((*(UINT16 *) (UINTN)0x40E) << 4);\r
1653 E820Table[0].Type = EfiAcpiAddressRangeMemory;\r
1654\r
1655 //\r
1656 // Second entry is (640k - EBDA) to 640k\r
1657 //\r
1658 E820Table[1].BaseAddr = E820Table[0].Length;\r
1659 E820Table[1].Length = (UINT64) ((640 * 1024) - E820Table[0].Length);\r
1660 E820Table[1].Type = EfiAcpiAddressRangeReserved;\r
1661\r
1662 //\r
1663 // Third Entry is legacy BIOS\r
1664 // DO NOT CLAIM region from 0xA0000-0xDFFFF. OS can use free areas\r
1665 // to page in memory under 1MB.\r
1666 // Omit region from 0xE0000 to start of BIOS, if any. This can be\r
1667 // used for a multiple reasons including OPROMS.\r
1668 //\r
1669\r
1670 //\r
1671 // The CSM binary image size is not the actually size that CSM binary used,\r
1672 // to avoid memory corrupt, we declare the 0E0000 - 0FFFFF is used by CSM binary.\r
1673 //\r
1674 E820Table[2].BaseAddr = 0xE0000;\r
1675 E820Table[2].Length = 0x20000;\r
1676 E820Table[2].Type = EfiAcpiAddressRangeReserved;\r
1677\r
1678 Above1MIndex = 2;\r
1679\r
1680 //\r
1681 // Process the EFI map to produce E820 map;\r
1682 //\r
1683\r
1684 //\r
1685 // Sort memory map from low to high\r
1686 //\r
1687 EfiEntry = EfiMemoryMap;\r
1688 NextEfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);\r
1689 EfiMemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) EfiMemoryMap + EfiMemoryMapSize);\r
1690 while (EfiEntry < EfiMemoryMapEnd) {\r
1691 while (NextEfiEntry < EfiMemoryMapEnd) {\r
1692 if (EfiEntry->PhysicalStart > NextEfiEntry->PhysicalStart) {\r
1693 CopyMem (&TempEfiEntry, EfiEntry, sizeof (EFI_MEMORY_DESCRIPTOR));\r
1694 CopyMem (EfiEntry, NextEfiEntry, sizeof (EFI_MEMORY_DESCRIPTOR));\r
1695 CopyMem (NextEfiEntry, &TempEfiEntry, sizeof (EFI_MEMORY_DESCRIPTOR));\r
1696 }\r
1697\r
1698 NextEfiEntry = NEXT_MEMORY_DESCRIPTOR (NextEfiEntry, EfiDescriptorSize);\r
1699 }\r
1700\r
1701 EfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);\r
1702 NextEfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);\r
1703 }\r
1704\r
1705 EfiEntry = EfiMemoryMap;\r
1706 EfiMemoryMapEnd = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) EfiMemoryMap + EfiMemoryMapSize);\r
1707 for (Index = Above1MIndex; (EfiEntry < EfiMemoryMapEnd) && (Index < EFI_MAX_E820_ENTRY - 1); ) {\r
1708 MemoryBlockLength = (UINT64) (LShiftU64 (EfiEntry->NumberOfPages, 12));\r
1709 if ((EfiEntry->PhysicalStart + MemoryBlockLength) < 0x100000) {\r
1710 //\r
1711 // Skip the memory block is under 1MB\r
1712 //\r
1713 } else {\r
1714 if (EfiEntry->PhysicalStart < 0x100000) {\r
1715 //\r
1716 // When the memory block spans below 1MB, ensure the memory block start address is at least 1MB\r
1717 //\r
1718 MemoryBlockLength -= 0x100000 - EfiEntry->PhysicalStart;\r
1719 EfiEntry->PhysicalStart = 0x100000;\r
1720 }\r
1721\r
1722 //\r
1723 // Convert memory type to E820 type\r
1724 //\r
1725 TempType = EfiMemoryTypeToE820Type (EfiEntry->Type);\r
1726\r
1727 if ((E820Table[Index].Type == TempType) && (EfiEntry->PhysicalStart == (E820Table[Index].BaseAddr + E820Table[Index].Length))) {\r
1728 //\r
1729 // Grow an existing entry\r
1730 //\r
1731 E820Table[Index].Length += MemoryBlockLength;\r
1732 } else {\r
1733 //\r
1734 // Make a new entry\r
1735 //\r
1736 ++Index;\r
1737 E820Table[Index].BaseAddr = EfiEntry->PhysicalStart;\r
1738 E820Table[Index].Length = MemoryBlockLength;\r
1739 E820Table[Index].Type = TempType;\r
1740 }\r
1741 }\r
1742 EfiEntry = NEXT_MEMORY_DESCRIPTOR (EfiEntry, EfiDescriptorSize);\r
1743 }\r
1744\r
1745 FreePool (EfiMemoryMap);\r
1746\r
1747 //\r
1748 // Process the reserved memory map to produce E820 map ;\r
1749 //\r
1750 for (Hob.Raw = GetHobList (); !END_OF_HOB_LIST (Hob); Hob.Raw = GET_NEXT_HOB (Hob)) {\r
1751 if (Hob.Raw != NULL && GET_HOB_TYPE (Hob) == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {\r
1752 ResourceHob = Hob.ResourceDescriptor;\r
1753 if (((ResourceHob->ResourceType == EFI_RESOURCE_MEMORY_MAPPED_IO) ||\r
1754 (ResourceHob->ResourceType == EFI_RESOURCE_FIRMWARE_DEVICE) ||\r
1755 (ResourceHob->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) ) &&\r
1756 (ResourceHob->PhysicalStart > 0x100000) &&\r
1757 (Index < EFI_MAX_E820_ENTRY - 1)) {\r
1758 ++Index;\r
1759 E820Table[Index].BaseAddr = ResourceHob->PhysicalStart;\r
1760 E820Table[Index].Length = ResourceHob->ResourceLength;\r
1761 E820Table[Index].Type = EfiAcpiAddressRangeReserved;\r
1762 }\r
1763 }\r
1764 }\r
1765\r
1766 Index ++;\r
1767 Private->IntThunk->EfiToLegacy16InitTable.NumberE820Entries = (UINT32)Index;\r
1768 Private->IntThunk->EfiToLegacy16BootTable.NumberE820Entries = (UINT32)Index;\r
1769 Private->NumberE820Entries = (UINT32)Index;\r
1770 *Size = (UINTN) (Index * sizeof (EFI_E820_ENTRY64));\r
1771\r
1772 //\r
1773 // Sort E820Table from low to high\r
1774 //\r
1775 for (TempIndex = 0; TempIndex < Index; TempIndex++) {\r
1776 ChangedFlag = FALSE;\r
1777 for (TempNextIndex = 1; TempNextIndex < Index - TempIndex; TempNextIndex++) {\r
1778 if (E820Table[TempNextIndex - 1].BaseAddr > E820Table[TempNextIndex].BaseAddr) {\r
1779 ChangedFlag = TRUE;\r
1780 TempE820.BaseAddr = E820Table[TempNextIndex - 1].BaseAddr;\r
1781 TempE820.Length = E820Table[TempNextIndex - 1].Length;\r
1782 TempE820.Type = E820Table[TempNextIndex - 1].Type;\r
1783\r
1784 E820Table[TempNextIndex - 1].BaseAddr = E820Table[TempNextIndex].BaseAddr;\r
1785 E820Table[TempNextIndex - 1].Length = E820Table[TempNextIndex].Length;\r
1786 E820Table[TempNextIndex - 1].Type = E820Table[TempNextIndex].Type;\r
1787\r
1788 E820Table[TempNextIndex].BaseAddr = TempE820.BaseAddr;\r
1789 E820Table[TempNextIndex].Length = TempE820.Length;\r
1790 E820Table[TempNextIndex].Type = TempE820.Type;\r
1791 }\r
1792 }\r
1793\r
1794 if (!ChangedFlag) {\r
1795 break;\r
1796 }\r
1797 }\r
1798\r
1799 //\r
1800 // Remove the overlap range\r
1801 //\r
1802 for (TempIndex = 1; TempIndex < Index; TempIndex++) {\r
1803 if (E820Table[TempIndex - 1].BaseAddr <= E820Table[TempIndex].BaseAddr &&\r
1804 ((E820Table[TempIndex - 1].BaseAddr + E820Table[TempIndex - 1].Length) >=\r
1805 (E820Table[TempIndex].BaseAddr +E820Table[TempIndex].Length))) {\r
1806 //\r
1807 //Overlap range is found\r
1808 //\r
1809 ASSERT (E820Table[TempIndex - 1].Type == E820Table[TempIndex].Type);\r
1810\r
1811 if (TempIndex == Index - 1) {\r
1812 E820Table[TempIndex].BaseAddr = 0;\r
1813 E820Table[TempIndex].Length = 0;\r
1814 E820Table[TempIndex].Type = (EFI_ACPI_MEMORY_TYPE) 0;\r
1815 Index--;\r
1816 break;\r
1817 } else {\r
1818 for (IndexSort = TempIndex; IndexSort < Index - 1; IndexSort ++) {\r
1819 E820Table[IndexSort].BaseAddr = E820Table[IndexSort + 1].BaseAddr;\r
1820 E820Table[IndexSort].Length = E820Table[IndexSort + 1].Length;\r
1821 E820Table[IndexSort].Type = E820Table[IndexSort + 1].Type;\r
1822 }\r
1823 Index--;\r
1824 }\r
1825 }\r
1826 }\r
1827\r
1828\r
1829\r
1830 Private->IntThunk->EfiToLegacy16InitTable.NumberE820Entries = (UINT32)Index;\r
1831 Private->IntThunk->EfiToLegacy16BootTable.NumberE820Entries = (UINT32)Index;\r
1832 Private->NumberE820Entries = (UINT32)Index;\r
1833 *Size = (UINTN) (Index * sizeof (EFI_E820_ENTRY64));\r
1834\r
1835 //\r
1836 // Determine OS usable memory above 1Mb\r
1837 //\r
1838 Private->IntThunk->EfiToLegacy16BootTable.OsMemoryAbove1Mb = 0x0000;\r
1839 for (TempIndex = Above1MIndex; TempIndex < Index; TempIndex++) {\r
1840 if (E820Table[TempIndex].BaseAddr >= 0x100000 && E820Table[TempIndex].BaseAddr < 0x100000000ULL) { // not include above 4G memory\r
1841 //\r
1842 // ACPIReclaimMemory is also usable memory for ACPI OS, after OS dumps all ACPI tables.\r
1843 //\r
1844 if ((E820Table[TempIndex].Type == EfiAcpiAddressRangeMemory) || (E820Table[TempIndex].Type == EfiAcpiAddressRangeACPI)) {\r
1845 Private->IntThunk->EfiToLegacy16BootTable.OsMemoryAbove1Mb += (UINT32) (E820Table[TempIndex].Length);\r
1846 } else {\r
1847 break; // break at first not normal memory, because SMM may use reserved memory.\r
1848 }\r
1849 }\r
1850 }\r
1851\r
1852 Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb = Private->IntThunk->EfiToLegacy16BootTable.OsMemoryAbove1Mb;\r
1853\r
1854 //\r
1855 // Print DEBUG information\r
1856 //\r
1857 for (TempIndex = 0; TempIndex < Index; TempIndex++) {\r
1858 DEBUG((EFI_D_INFO, "E820[%2d]: 0x%16lx ---- 0x%16lx, Type = 0x%x \n",\r
1859 TempIndex,\r
1860 E820Table[TempIndex].BaseAddr,\r
1861 (E820Table[TempIndex].BaseAddr + E820Table[TempIndex].Length),\r
1862 E820Table[TempIndex].Type\r
1863 ));\r
1864 }\r
1865\r
1866 return EFI_SUCCESS;\r
1867}\r
1868\r
1869\r
1870/**\r
1871 Fill in the standard BDA and EBDA stuff prior to legacy Boot\r
1872\r
1873 @param Private Legacy BIOS Instance data\r
1874\r
1875 @retval EFI_SUCCESS It should always work.\r
1876\r
1877**/\r
1878EFI_STATUS\r
1879LegacyBiosCompleteBdaBeforeBoot (\r
1880 IN LEGACY_BIOS_INSTANCE *Private\r
1881 )\r
1882{\r
1883 BDA_STRUC *Bda;\r
1884 UINT16 MachineConfig;\r
1885 DEVICE_PRODUCER_DATA_HEADER *SioPtr;\r
1886\r
1887 Bda = (BDA_STRUC *) ((UINTN) 0x400);\r
1888 MachineConfig = 0;\r
1889\r
1890 SioPtr = &(Private->IntThunk->EfiToLegacy16BootTable.SioData);\r
1891 Bda->Com1 = SioPtr->Serial[0].Address;\r
1892 Bda->Com2 = SioPtr->Serial[1].Address;\r
1893 Bda->Com3 = SioPtr->Serial[2].Address;\r
1894 Bda->Com4 = SioPtr->Serial[3].Address;\r
1895\r
1896 if (SioPtr->Serial[0].Address != 0x00) {\r
1897 MachineConfig += 0x200;\r
1898 }\r
1899\r
1900 if (SioPtr->Serial[1].Address != 0x00) {\r
1901 MachineConfig += 0x200;\r
1902 }\r
1903\r
1904 if (SioPtr->Serial[2].Address != 0x00) {\r
1905 MachineConfig += 0x200;\r
1906 }\r
1907\r
1908 if (SioPtr->Serial[3].Address != 0x00) {\r
1909 MachineConfig += 0x200;\r
1910 }\r
1911\r
1912 Bda->Lpt1 = SioPtr->Parallel[0].Address;\r
1913 Bda->Lpt2 = SioPtr->Parallel[1].Address;\r
1914 Bda->Lpt3 = SioPtr->Parallel[2].Address;\r
1915\r
1916 if (SioPtr->Parallel[0].Address != 0x00) {\r
1917 MachineConfig += 0x4000;\r
1918 }\r
1919\r
1920 if (SioPtr->Parallel[1].Address != 0x00) {\r
1921 MachineConfig += 0x4000;\r
1922 }\r
1923\r
1924 if (SioPtr->Parallel[2].Address != 0x00) {\r
1925 MachineConfig += 0x4000;\r
1926 }\r
1927\r
1928 Bda->NumberOfDrives = (UINT8) (Bda->NumberOfDrives + Private->IdeDriveCount);\r
1929 if (SioPtr->Floppy.NumberOfFloppy != 0x00) {\r
1930 MachineConfig = (UINT16) (MachineConfig + 0x01 + (SioPtr->Floppy.NumberOfFloppy - 1) * 0x40);\r
1931 Bda->FloppyXRate = 0x07;\r
1932 }\r
1933\r
1934 Bda->Lpt1_2Timeout = 0x1414;\r
1935 Bda->Lpt3_4Timeout = 0x1414;\r
1936 Bda->Com1_2Timeout = 0x0101;\r
1937 Bda->Com3_4Timeout = 0x0101;\r
1938\r
1939 //\r
1940 // Force VGA and Coprocessor, indicate 101/102 keyboard\r
1941 //\r
1942 MachineConfig = (UINT16) (MachineConfig + 0x00 + 0x02 + (SioPtr->MousePresent * 0x04));\r
1943 Bda->MachineConfig = MachineConfig;\r
1944\r
1945 return EFI_SUCCESS;\r
1946}\r
1947\r
1948/**\r
1949 Fill in the standard BDA for Keyboard LEDs\r
1950\r
1951 @param This Protocol instance pointer.\r
1952 @param Leds Current LED status\r
1953\r
1954 @retval EFI_SUCCESS It should always work.\r
1955\r
1956**/\r
1957EFI_STATUS\r
1958EFIAPI\r
1959LegacyBiosUpdateKeyboardLedStatus (\r
1960 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
1961 IN UINT8 Leds\r
1962 )\r
1963{\r
1964 LEGACY_BIOS_INSTANCE *Private;\r
1965 BDA_STRUC *Bda;\r
1966 UINT8 LocalLeds;\r
1967 EFI_IA32_REGISTER_SET Regs;\r
1968\r
1969 Bda = (BDA_STRUC *) ((UINTN) 0x400);\r
1970\r
1971 Private = LEGACY_BIOS_INSTANCE_FROM_THIS (This);\r
1972 LocalLeds = Leds;\r
1973 Bda->LedStatus = (UINT8) ((Bda->LedStatus &~0x07) | LocalLeds);\r
1974 LocalLeds = (UINT8) (LocalLeds << 4);\r
1975 Bda->ShiftStatus = (UINT8) ((Bda->ShiftStatus &~0x70) | LocalLeds);\r
1976 LocalLeds = (UINT8) (Leds & 0x20);\r
1977 Bda->KeyboardStatus = (UINT8) ((Bda->KeyboardStatus &~0x20) | LocalLeds);\r
1978 //\r
1979 // Call into Legacy16 code to allow it to do any processing\r
1980 //\r
1981 ZeroMem (&Regs, sizeof (EFI_IA32_REGISTER_SET));\r
1982 Regs.X.AX = Legacy16SetKeyboardLeds;\r
1983 Regs.H.CL = Leds;\r
1984\r
1985 Private->LegacyBios.FarCall86 (\r
1986 &Private->LegacyBios,\r
1987 Private->Legacy16Table->Compatibility16CallSegment,\r
1988 Private->Legacy16Table->Compatibility16CallOffset,\r
1989 &Regs,\r
1990 NULL,\r
1991 0\r
1992 );\r
1993\r
1994 return EFI_SUCCESS;\r
1995}\r
1996\r
1997\r
1998/**\r
1999 Fill in the standard CMOS stuff prior to legacy Boot\r
2000\r
2001 @param Private Legacy BIOS Instance data\r
2002\r
2003 @retval EFI_SUCCESS It should always work.\r
2004\r
2005**/\r
2006EFI_STATUS\r
2007LegacyBiosCompleteStandardCmosBeforeBoot (\r
2008 IN LEGACY_BIOS_INSTANCE *Private\r
2009 )\r
2010{\r
2011 UINT8 Bda;\r
2012 UINT8 Floppy;\r
2013 UINT32 Size;\r
2014\r
2015 //\r
2016 // Update CMOS locations\r
2017 // 10 floppy\r
2018 // 12,19,1A - ignore as OS don't use them and there is no standard due\r
2019 // to large capacity drives\r
2020 // CMOS 14 = BDA 40:10 plus bit 3(display enabled)\r
2021 //\r
2022 Bda = (UINT8)(*((UINT8 *)((UINTN)0x410)) | BIT3);\r
2023\r
2024 //\r
2025 // Force display enabled\r
2026 //\r
2027 Floppy = 0x00;\r
2028 if ((Bda & BIT0) != 0) {\r
2029 Floppy = BIT6;\r
2030 }\r
2031\r
2032 //\r
2033 // Check if 2.88MB floppy set\r
2034 //\r
2035 if ((Bda & (BIT7 | BIT6)) != 0) {\r
2036 Floppy = (UINT8)(Floppy | BIT1);\r
2037 }\r
2038\r
2039 LegacyWriteStandardCmos (CMOS_10, Floppy);\r
2040 LegacyWriteStandardCmos (CMOS_14, Bda);\r
2041\r
2042 //\r
2043 // Force Status Register A to set rate selection bits and divider\r
2044 //\r
2045 LegacyWriteStandardCmos (CMOS_0A, 0x26);\r
2046\r
2047 //\r
2048 // redo memory size since it can change\r
2049 //\r
2050 Size = 15 * SIZE_1MB;\r
2051 if (Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb < (15 * SIZE_1MB)) {\r
2052 Size = Private->IntThunk->EfiToLegacy16InitTable.OsMemoryAbove1Mb >> 10;\r
2053 }\r
2054\r
2055 LegacyWriteStandardCmos (CMOS_17, (UINT8)(Size & 0xFF));\r
2056 LegacyWriteStandardCmos (CMOS_30, (UINT8)(Size & 0xFF));\r
2057 LegacyWriteStandardCmos (CMOS_18, (UINT8)(Size >> 8));\r
2058 LegacyWriteStandardCmos (CMOS_31, (UINT8)(Size >> 8));\r
2059\r
2060 LegacyCalculateWriteStandardCmosChecksum ();\r
2061\r
2062 return EFI_SUCCESS;\r
2063}\r
2064\r
2065/**\r
2066 Relocate this image under 4G memory for IPF.\r
2067\r
2068 @param ImageHandle Handle of driver image.\r
2069 @param SystemTable Pointer to system table.\r
2070\r
2071 @retval EFI_SUCCESS Image successfully relocated.\r
2072 @retval EFI_ABORTED Failed to relocate image.\r
2073\r
2074**/\r
2075EFI_STATUS\r
2076RelocateImageUnder4GIfNeeded (\r
2077 IN EFI_HANDLE ImageHandle,\r
2078 IN EFI_SYSTEM_TABLE *SystemTable\r
2079 )\r
2080{\r
2081 return EFI_SUCCESS;\r
2082}\r
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