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79964ac8 | 1 | /** @file\r |
2 | The EFI Legacy BIOS Protocol is used to abstract legacy Option ROM usage\r | |
3 | under EFI and Legacy OS boot.\r | |
4 | \r | |
5 | Note: The names for EFI_IA32_REGISTER_SET elements were picked to follow\r | |
6 | well known naming conventions.\r | |
7 | \r | |
8 | Thunk - A thunk is a transition from one processor mode to another. A Thunk\r | |
9 | is a transition from native EFI mode to 16-bit mode. A reverse thunk\r | |
10 | would be a transition from 16-bit mode to native EFI mode.\r | |
11 | \r | |
12 | You most likely should not use this protocol! Find the EFI way to solve the\r | |
13 | problem to make your code portable\r | |
14 | \r | |
15 | Copyright (c) 2007, Intel Corporation\r | |
16 | All rights reserved. This program and the accompanying materials\r | |
17 | are licensed and made available under the terms and conditions of the BSD License\r | |
18 | which accompanies this distribution. The full text of the license may be found at\r | |
19 | http://opensource.org/licenses/bsd-license.php\r | |
20 | \r | |
21 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
22 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
23 | \r | |
24 | Module Name: LegacyBios.h\r | |
25 | \r | |
26 | @par Revision Reference:\r | |
27 | This protocol is defined in Framework for EFI Compatibility Support Module spec\r | |
0f899407 | 28 | Version 0.97.\r |
79964ac8 | 29 | \r |
30 | **/\r | |
31 | \r | |
32 | #ifndef _EFI_LEGACY_BIOS_H_\r | |
33 | #define _EFI_LEGACY_BIOS_H_\r | |
34 | \r | |
b80fbe85 | 35 | #include <FrameworkDxe.h>\r |
36 | \r | |
79964ac8 | 37 | #define EFI_LEGACY_BIOS_PROTOCOL_GUID \\r |
38 | { \\r | |
39 | 0xdb9a1e3d, 0x45cb, 0x4abb, {0x85, 0x3b, 0xe5, 0x38, 0x7f, 0xdb, 0x2e, 0x2d } \\r | |
40 | }\r | |
41 | \r | |
42 | typedef struct _EFI_LEGACY_BIOS_PROTOCOL EFI_LEGACY_BIOS_PROTOCOL;\r | |
43 | \r | |
9226e4ee | 44 | //\r |
45 | // Flags returned by CheckPciRom()\r | |
46 | //\r | |
47 | #define NO_ROM 0x00\r | |
48 | #define ROM_FOUND 0x01\r | |
49 | #define VALID_LEGACY_ROM 0x02\r | |
50 | #define ROM_WITH_CONFIG 0x04 // Not defined in CSM Specification0.96\r | |
51 | \r | |
79964ac8 | 52 | //\r |
4ebb0d9e | 53 | /// @bug These macros appear in no specifications and are kept for backward\r |
79964ac8 | 54 | // compatibility only.\r |
55 | // Convert from 32-bit address (_Adr) to Segment:Offset 16-bit form\r | |
56 | //\r | |
57 | #define EFI_SEGMENT(_Adr) (UINT16) ((UINT16) (((UINTN) (_Adr)) >> 4) & 0xf000)\r | |
58 | #define EFI_OFFSET(_Adr) (UINT16) (((UINT16) ((UINTN) (_Adr))) & 0xffff)\r | |
59 | #define BYTE_GRANULARITY 0x01\r | |
60 | #define WORD_GRANULARITY 0x02\r | |
61 | #define DWORD_GRANULARITY 0x04\r | |
62 | #define QWORD_GRANULARITY 0x08\r | |
63 | #define PARAGRAPH_GRANULARITY 0x10\r | |
64 | \r | |
65 | #define CARRY_FLAG 0x01\r | |
66 | \r | |
67 | //*********************************************************\r | |
68 | // EFI_EFLAGS_REG\r | |
69 | //*********************************************************\r | |
70 | typedef struct {\r | |
71 | UINT32 CF:1;\r | |
72 | UINT32 Reserved1:1;\r | |
73 | UINT32 PF:1;\r | |
74 | UINT32 Reserved2:1;\r | |
75 | UINT32 AF:1;\r | |
76 | UINT32 Reserved3:1;\r | |
77 | UINT32 ZF:1;\r | |
78 | UINT32 SF:1;\r | |
79 | UINT32 TF:1;\r | |
80 | UINT32 IF:1;\r | |
81 | UINT32 DF:1;\r | |
82 | UINT32 OF:1;\r | |
83 | UINT32 IOPL:2;\r | |
84 | UINT32 NT:1;\r | |
85 | UINT32 Reserved4:2;\r | |
86 | UINT32 VM:1;\r | |
87 | UINT32 Reserved5:14;\r | |
88 | } EFI_EFLAGS_REG;\r | |
89 | \r | |
90 | //*********************************************************\r | |
91 | // EFI_DWORD_REGS\r | |
92 | //*********************************************************\r | |
93 | \r | |
94 | typedef struct {\r | |
95 | UINT32 EAX;\r | |
96 | UINT32 EBX;\r | |
97 | UINT32 ECX;\r | |
98 | UINT32 EDX;\r | |
99 | UINT32 ESI;\r | |
100 | UINT32 EDI;\r | |
101 | EFI_EFLAGS_REG EFlags;\r | |
102 | UINT16 ES;\r | |
103 | UINT16 CS;\r | |
104 | UINT16 SS;\r | |
105 | UINT16 DS;\r | |
106 | UINT16 FS;\r | |
107 | UINT16 GS;\r | |
108 | UINT32 EBP;\r | |
109 | UINT32 ESP;\r | |
110 | } EFI_DWORD_REGS;\r | |
111 | \r | |
112 | //*******************************************\r | |
113 | // EFI_FLAGS_REG\r | |
114 | //*******************************************\r | |
115 | typedef struct {\r | |
116 | UINT16 CF:1;\r | |
117 | UINT16 Reserved1:1;\r | |
118 | UINT16 PF:1;\r | |
119 | UINT16 Reserved2:1;\r | |
120 | UINT16 AF:1;\r | |
121 | UINT16 Reserved3:1;\r | |
122 | UINT16 ZF:1;\r | |
123 | UINT16 SF:1;\r | |
124 | UINT16 TF:1;\r | |
125 | UINT16 IF:1;\r | |
126 | UINT16 DF:1;\r | |
127 | UINT16 OF:1;\r | |
128 | UINT16 IOPL:2;\r | |
129 | UINT16 NT:1;\r | |
130 | UINT16 Reserved4:1;\r | |
131 | } EFI_FLAGS_REG;\r | |
132 | \r | |
133 | \r | |
134 | //*********************************************************\r | |
135 | // EFI_WORD_REGS\r | |
136 | //*********************************************************\r | |
137 | \r | |
138 | typedef struct {\r | |
139 | UINT16 AX;\r | |
140 | UINT16 ReservedAX;\r | |
141 | UINT16 BX;\r | |
142 | UINT16 ReservedBX;\r | |
143 | UINT16 CX;\r | |
144 | UINT16 ReservedCX;\r | |
145 | UINT16 DX;\r | |
146 | UINT16 ReservedDX;\r | |
147 | UINT16 SI;\r | |
148 | UINT16 ReservedSI;\r | |
149 | UINT16 DI;\r | |
150 | UINT16 ReservedDI;\r | |
151 | EFI_FLAGS_REG Flags;\r | |
152 | UINT16 ReservedFlags;\r | |
153 | UINT16 ES;\r | |
154 | UINT16 CS;\r | |
155 | UINT16 SS;\r | |
156 | UINT16 DS;\r | |
157 | UINT16 FS;\r | |
158 | UINT16 GS;\r | |
159 | UINT16 BP;\r | |
160 | UINT16 ReservedBP;\r | |
161 | UINT16 SP;\r | |
162 | UINT16 ReservedSP;\r | |
163 | } EFI_WORD_REGS;\r | |
164 | \r | |
165 | //*********************************************************\r | |
166 | // EFI_BYTE_REGS\r | |
167 | //*********************************************************\r | |
168 | \r | |
169 | typedef struct {\r | |
170 | UINT8 AL, AH;\r | |
171 | UINT16 ReservedAX;\r | |
172 | UINT8 BL, BH;\r | |
173 | UINT16 ReservedBX;\r | |
174 | UINT8 CL, CH;\r | |
175 | UINT16 ReservedCX;\r | |
176 | UINT8 DL, DH;\r | |
177 | UINT16 ReservedDX;\r | |
178 | } EFI_BYTE_REGS;\r | |
179 | \r | |
180 | typedef union {\r | |
181 | EFI_DWORD_REGS E;\r | |
182 | EFI_WORD_REGS X;\r | |
183 | EFI_BYTE_REGS H;\r | |
184 | } EFI_IA32_REGISTER_SET;\r | |
185 | \r | |
186 | /**\r | |
187 | Thunk to 16-bit real mode and execute a software interrupt with a vector\r | |
188 | of BiosInt. Regs will contain the 16-bit register context on entry and\r | |
189 | exit.\r | |
190 | \r | |
191 | @param This Protocol instance pointer.\r | |
192 | @param BiosInt Processor interrupt vector to invoke\r | |
193 | @param Reg Register contexted passed into (and returned) from thunk to\r | |
194 | 16-bit mode\r | |
195 | \r | |
196 | @retval FALSE Thunk completed, and there were no BIOS errors in the target code.\r | |
197 | See Regs for status.\r | |
198 | @retval TRUE There was a BIOS erro in the target code.\r | |
199 | \r | |
200 | **/\r | |
201 | typedef\r | |
202 | BOOLEAN\r | |
69686d56 | 203 | (EFIAPI *EFI_LEGACY_BIOS_INT86)(\r |
79964ac8 | 204 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
205 | IN UINT8 BiosInt,\r | |
206 | IN OUT EFI_IA32_REGISTER_SET *Regs\r | |
207 | );\r | |
208 | \r | |
209 | /**\r | |
210 | Thunk to 16-bit real mode and call Segment:Offset. Regs will contain the\r | |
211 | 16-bit register context on entry and exit. Arguments can be passed on\r | |
212 | the Stack argument\r | |
213 | \r | |
214 | @param This Protocol instance pointer.\r | |
215 | @param Segment Segemnt of 16-bit mode call\r | |
216 | @param Offset Offset of 16-bit mdoe call\r | |
217 | @param Reg Register contexted passed into (and returned) from thunk to\r | |
218 | 16-bit mode\r | |
219 | @param Stack Caller allocated stack used to pass arguments\r | |
220 | @param StackSize Size of Stack in bytes\r | |
221 | \r | |
222 | @retval FALSE Thunk completed, and there were no BIOS errors in the target code.\r | |
223 | See Regs for status.\r | |
224 | @retval TRUE There was a BIOS erro in the target code.\r | |
225 | \r | |
226 | **/\r | |
227 | typedef\r | |
228 | BOOLEAN\r | |
69686d56 | 229 | (EFIAPI *EFI_LEGACY_BIOS_FARCALL86)(\r |
79964ac8 | 230 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
231 | IN UINT16 Segment,\r | |
232 | IN UINT16 Offset,\r | |
233 | IN EFI_IA32_REGISTER_SET *Regs,\r | |
234 | IN VOID *Stack,\r | |
235 | IN UINTN StackSize\r | |
236 | );\r | |
237 | \r | |
238 | /**\r | |
239 | Test to see if a legacy PCI ROM exists for this device. Optionally return\r | |
240 | the Legacy ROM instance for this PCI device.\r | |
241 | \r | |
242 | @param This Protocol instance pointer.\r | |
243 | @param PciHandle The PCI PC-AT OPROM from this devices ROM BAR will be loaded\r | |
244 | @param RomImage Return the legacy PCI ROM for this device\r | |
245 | @param RomSize Size of ROM Image\r | |
246 | @param Flags Indicates if ROM found and if PC-AT.\r | |
247 | \r | |
248 | @retval EFI_SUCCESS Legacy Option ROM availible for this device\r | |
249 | @retval EFI_UNSUPPORTED Legacy Option ROM not supported.\r | |
250 | \r | |
251 | **/\r | |
252 | typedef\r | |
253 | EFI_STATUS\r | |
69686d56 | 254 | (EFIAPI *EFI_LEGACY_BIOS_CHECK_ROM)(\r |
79964ac8 | 255 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
256 | IN EFI_HANDLE PciHandle,\r | |
257 | OUT VOID **RomImage, OPTIONAL\r | |
258 | OUT UINTN *RomSize, OPTIONAL\r | |
259 | OUT UINTN *Flags\r | |
260 | );\r | |
261 | \r | |
262 | /**\r | |
263 | Load a legacy PC-AT OPROM on the PciHandle device. Return information\r | |
264 | about how many disks were added by the OPROM and the shadow address and\r | |
265 | size. DiskStart & DiskEnd are INT 13h drive letters. Thus 0x80 is C:\r | |
266 | \r | |
267 | @param This Protocol instance pointer.\r | |
268 | @param PciHandle The PCI PC-AT OPROM from this devices ROM BAR will be loaded.\r | |
269 | This value is NULL if RomImage is non-NULL. This is the normal\r | |
270 | case.\r | |
271 | @param RomImage A PCI PC-AT ROM image. This argument is non-NULL if there is\r | |
272 | no hardware associated with the ROM and thus no PciHandle,\r | |
273 | otherwise is must be NULL.\r | |
274 | Example is PXE base code.\r | |
275 | @param Flags Return Status if ROM was found and if was Legacy OPROM.\r | |
276 | @param DiskStart Disk number of first device hooked by the ROM. If DiskStart\r | |
277 | is the same as DiskEnd no disked were hooked.\r | |
278 | @param DiskEnd Disk number of the last device hooked by the ROM.\r | |
279 | @param RomShadowAddress Shadow address of PC-AT ROM\r | |
280 | @param RomShadowSize Size of RomShadowAddress in bytes\r | |
281 | \r | |
282 | @retval EFI_SUCCESS Thunk completed, see Regs for status.\r | |
283 | @retval EFI_INVALID_PARAMETER PciHandle not found\r | |
284 | \r | |
285 | **/\r | |
286 | typedef\r | |
287 | EFI_STATUS\r | |
69686d56 | 288 | (EFIAPI *EFI_LEGACY_BIOS_INSTALL_ROM)(\r |
79964ac8 | 289 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
290 | IN EFI_HANDLE PciHandle,\r | |
291 | IN VOID **RomImage,\r | |
292 | OUT UINTN *Flags,\r | |
293 | OUT UINT8 *DiskStart, OPTIONAL\r | |
294 | OUT UINT8 *DiskEnd, OPTIONAL\r | |
295 | OUT VOID **RomShadowAddress, OPTIONAL\r | |
296 | OUT UINT32 *ShadowedRomSize OPTIONAL\r | |
297 | );\r | |
298 | \r | |
299 | /**\r | |
300 | Attempt to legacy boot the BootOption. If the EFI contexted has been\r | |
301 | compromised this function will not return.\r | |
302 | \r | |
303 | @param This Protocol instance pointer.\r | |
304 | @param BootOption EFI Device Path from BootXXXX variable.\r | |
305 | @param LoadOptionSize Size of LoadOption in size.\r | |
306 | @param LoadOption LoadOption from BootXXXX variable\r | |
307 | \r | |
308 | @retval EFI_SUCCESS Removable media not present\r | |
309 | \r | |
310 | **/\r | |
311 | typedef\r | |
312 | EFI_STATUS\r | |
69686d56 | 313 | (EFIAPI *EFI_LEGACY_BIOS_BOOT)(\r |
79964ac8 | 314 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
315 | IN BBS_BBS_DEVICE_PATH *BootOption,\r | |
316 | IN UINT32 LoadOptionsSize,\r | |
317 | IN VOID *LoadOptions\r | |
318 | );\r | |
319 | \r | |
320 | /**\r | |
321 | Update BDA with current Scroll, Num & Cap lock LEDS\r | |
322 | \r | |
323 | @param This Protocol instance pointer.\r | |
324 | @param Leds Status of current Scroll, Num & Cap lock LEDS\r | |
325 | Bit 0 is Scroll Lock 0 = Not locked\r | |
326 | Bit 1 is Num Lock\r | |
327 | Bit 2 is Caps Lock\r | |
328 | \r | |
329 | @retval EFI_SUCCESS Removable media not present\r | |
330 | \r | |
331 | **/\r | |
332 | typedef\r | |
333 | EFI_STATUS\r | |
69686d56 | 334 | (EFIAPI *EFI_LEGACY_BIOS_UPDATE_KEYBOARD_LED_STATUS)(\r |
79964ac8 | 335 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
336 | IN UINT8 Leds\r | |
337 | );\r | |
338 | \r | |
339 | /**\r | |
340 | Retrieve legacy BBS info and assign boot priority.\r | |
341 | \r | |
342 | @param This Protocol instance pointer.\r | |
343 | @param HddCount Number of HDD_INFO structures\r | |
344 | @param HddInfo Onboard IDE controller information\r | |
345 | @param BbsCount Number of BBS_TABLE structures\r | |
346 | @param BbsTable List BBS entries\r | |
347 | \r | |
348 | @retval EFI_SUCCESS Tables returned\r | |
349 | \r | |
350 | **/\r | |
351 | typedef\r | |
352 | EFI_STATUS\r | |
69686d56 | 353 | (EFIAPI *EFI_LEGACY_BIOS_GET_BBS_INFO)(\r |
79964ac8 | 354 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
355 | OUT UINT16 *HddCount,\r | |
356 | OUT HDD_INFO **HddInfo,\r | |
357 | OUT UINT16 *BbsCount,\r | |
358 | IN OUT BBS_TABLE **BbsTable\r | |
359 | );\r | |
360 | \r | |
361 | /**\r | |
362 | Assign drive number to legacy HDD drives prior to booting an EFI\r | |
363 | aware OS so the OS can access drives without an EFI driver.\r | |
364 | \r | |
365 | @param This Protocol instance pointer.\r | |
366 | @param BbsCount Number of BBS_TABLE structures\r | |
367 | @param BbsTable List BBS entries\r | |
368 | \r | |
369 | @retval EFI_SUCCESS Drive numbers assigned\r | |
370 | \r | |
371 | **/\r | |
372 | typedef\r | |
373 | EFI_STATUS\r | |
69686d56 | 374 | (EFIAPI *EFI_LEGACY_BIOS_PREPARE_TO_BOOT_EFI)(\r |
79964ac8 | 375 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
376 | OUT UINT16 *BbsCount,\r | |
377 | OUT BBS_TABLE **BbsTable\r | |
378 | );\r | |
379 | \r | |
380 | /**\r | |
381 | To boot from an unconventional device like parties and/or execute\r | |
382 | HDD diagnostics.\r | |
383 | \r | |
384 | @param This Protocol instance pointer.\r | |
385 | @param Attributes How to interpret the other input parameters\r | |
386 | @param BbsEntry The 0-based index into the BbsTable for the parent\r | |
387 | device.\r | |
388 | @param BeerData Pointer to the 128 bytes of ram BEER data.\r | |
389 | @param ServiceAreaData Pointer to the 64 bytes of raw Service Area data. The\r | |
390 | caller must provide a pointer to the specific Service\r | |
391 | Area and not the start all Service Areas.\r | |
392 | \r | |
393 | EFI_INVALID_PARAMETER if error. Does NOT return if no error.\r | |
394 | \r | |
395 | **/\r | |
396 | typedef\r | |
397 | EFI_STATUS\r | |
69686d56 | 398 | (EFIAPI *EFI_LEGACY_BIOS_BOOT_UNCONVENTIONAL_DEVICE)(\r |
79964ac8 | 399 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
400 | IN UDC_ATTRIBUTES Attributes,\r | |
401 | IN UINTN BbsEntry,\r | |
402 | IN VOID *BeerData,\r | |
403 | IN VOID *ServiceAreaData\r | |
404 | );\r | |
405 | \r | |
406 | /**\r | |
407 | Shadow all legacy16 OPROMs that haven't been shadowed.\r | |
408 | Warning: Use this with caution. This routine disconnects all EFI\r | |
409 | drivers. If used externally then caller must re-connect EFI\r | |
410 | drivers.\r | |
411 | \r | |
412 | @retval EFI_SUCCESS OPROMs shadowed\r | |
413 | \r | |
414 | **/\r | |
415 | typedef\r | |
416 | EFI_STATUS\r | |
69686d56 | 417 | (EFIAPI *EFI_LEGACY_BIOS_SHADOW_ALL_LEGACY_OPROMS)(\r |
79964ac8 | 418 | IN EFI_LEGACY_BIOS_PROTOCOL *This\r |
419 | );\r | |
420 | \r | |
421 | /**\r | |
422 | Get a region from the LegacyBios for S3 usage.\r | |
423 | \r | |
424 | @param This Protocol instance pointer.\r | |
425 | @param LegacyMemorySize Size of required region\r | |
426 | @param Region Region to use.\r | |
427 | 00 = Either 0xE0000 or 0xF0000 block\r | |
428 | Bit0 = 1 0xF0000 block\r | |
429 | Bit1 = 1 0xE0000 block\r | |
430 | @param Alignment Address alignment. Bit mapped. First non-zero\r | |
431 | bit from right is alignment.\r | |
432 | @param LegacyMemoryAddress Region Assigned\r | |
433 | \r | |
434 | @retval EFI_SUCCESS Region assigned\r | |
435 | @retval Other Region not assigned\r | |
436 | \r | |
437 | **/\r | |
438 | typedef\r | |
439 | EFI_STATUS\r | |
69686d56 | 440 | (EFIAPI *EFI_LEGACY_BIOS_GET_LEGACY_REGION)(\r |
79964ac8 | 441 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
442 | IN UINTN LegacyMemorySize,\r | |
443 | IN UINTN Region,\r | |
444 | IN UINTN Alignment,\r | |
445 | OUT VOID **LegacyMemoryAddress\r | |
446 | );\r | |
447 | \r | |
448 | /**\r | |
449 | Get a region from the LegacyBios for Tiano usage. Can only be invoked once.\r | |
450 | \r | |
451 | @param This Protocol instance pointer.\r | |
452 | @param LegacyMemorySize Size of data to copy\r | |
453 | @param LegacyMemoryAddress Legacy Region destination address\r | |
454 | Note: must be in region assigned by\r | |
455 | LegacyBiosGetLegacyRegion\r | |
456 | @param LegacyMemorySourceAddress\r | |
457 | Source of data\r | |
458 | \r | |
459 | @retval EFI_SUCCESS Region assigned\r | |
460 | @retval EFI_ACCESS_DENIED Destination outside assigned region\r | |
461 | \r | |
462 | **/\r | |
463 | typedef\r | |
464 | EFI_STATUS\r | |
69686d56 | 465 | (EFIAPI *EFI_LEGACY_BIOS_COPY_LEGACY_REGION)(\r |
79964ac8 | 466 | IN EFI_LEGACY_BIOS_PROTOCOL *This,\r |
467 | IN UINTN LegacyMemorySize,\r | |
468 | IN VOID *LegacyMemoryAddress,\r | |
469 | IN VOID *LegacyMemorySourceAddress\r | |
470 | );\r | |
471 | \r | |
472 | /**\r | |
473 | @par Protocol Description:\r | |
474 | Abstracts the traditional BIOS from the rest of EFI. The LegacyBoot()\r | |
475 | member function allows the BDS to support booting a traditional OS.\r | |
476 | EFI thunks drivers that make EFI bindings for BIOS INT services use\r | |
477 | all the other member functions.\r | |
478 | \r | |
479 | @param Int86\r | |
480 | Performs traditional software INT. See the Int86() function description.\r | |
481 | \r | |
482 | @param FarCall86\r | |
483 | Performs a far call into Compatibility16 or traditional OpROM code.\r | |
484 | \r | |
485 | @param CheckPciRom\r | |
486 | Checks if a traditional OpROM exists for this device.\r | |
487 | \r | |
488 | @param InstallPciRom\r | |
489 | Loads a traditional OpROM in traditional OpROM address space.\r | |
490 | \r | |
491 | @param LegacyBoot\r | |
492 | Boots a traditional OS.\r | |
493 | \r | |
494 | @param UpdateKeyboardLedStatus\r | |
495 | Updates BDA to reflect the current EFI keyboard LED status.\r | |
496 | \r | |
497 | @param GetBbsInfo\r | |
498 | Allows an external agent, such as BIOS Setup, to get the BBS data.\r | |
499 | \r | |
500 | @param ShadowAllLegacyOproms\r | |
501 | Causes all legacy OpROMs to be shadowed.\r | |
502 | \r | |
503 | @param PrepareToBootEfi\r | |
504 | Performs all actions prior to boot. Used when booting an EFI-aware OS\r | |
505 | rather than a legacy OS.\r | |
506 | \r | |
507 | @param GetLegacyRegion\r | |
508 | Allows EFI to reserve an area in the 0xE0000 or 0xF0000 block.\r | |
509 | \r | |
510 | @param CopyLegacyRegion\r | |
511 | Allows EFI to copy data to the area specified by GetLegacyRegion.\r | |
512 | \r | |
513 | @param BootUnconventionalDevice\r | |
514 | Allows the user to boot off an unconventional device such as a PARTIES partition.\r | |
515 | \r | |
516 | **/\r | |
517 | struct _EFI_LEGACY_BIOS_PROTOCOL {\r | |
518 | EFI_LEGACY_BIOS_INT86 Int86;\r | |
519 | EFI_LEGACY_BIOS_FARCALL86 FarCall86;\r | |
520 | EFI_LEGACY_BIOS_CHECK_ROM CheckPciRom;\r | |
521 | EFI_LEGACY_BIOS_INSTALL_ROM InstallPciRom;\r | |
522 | EFI_LEGACY_BIOS_BOOT LegacyBoot;\r | |
523 | EFI_LEGACY_BIOS_UPDATE_KEYBOARD_LED_STATUS UpdateKeyboardLedStatus;\r | |
524 | EFI_LEGACY_BIOS_GET_BBS_INFO GetBbsInfo;\r | |
525 | EFI_LEGACY_BIOS_SHADOW_ALL_LEGACY_OPROMS ShadowAllLegacyOproms;\r | |
526 | EFI_LEGACY_BIOS_PREPARE_TO_BOOT_EFI PrepareToBootEfi;\r | |
527 | EFI_LEGACY_BIOS_GET_LEGACY_REGION GetLegacyRegion;\r | |
528 | EFI_LEGACY_BIOS_COPY_LEGACY_REGION CopyLegacyRegion;\r | |
529 | EFI_LEGACY_BIOS_BOOT_UNCONVENTIONAL_DEVICE BootUnconventionalDevice;\r | |
530 | };\r | |
531 | \r | |
532 | extern EFI_GUID gEfiLegacyBiosProtocolGuid;\r | |
533 | \r | |
534 | #endif\r |