Correct #include statements. This is a DXE DRIVER, not a UEFI module.
[mirror_edk2.git] / IntelFrameworkPkg / Include / Protocol / LegacyBios.h
CommitLineData
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
2bbaeb0d 15 Copyright (c) 2007 - 2009, Intel Corporation\r
79964ac8 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
0e0eeeca 35#include <Framework/Legacy16.h>\r
b80fbe85 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
42typedef 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
70typedef 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
94typedef 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
115typedef 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
138typedef 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
169typedef 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
180typedef 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
201typedef\r
202BOOLEAN\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
227typedef\r
228BOOLEAN\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
ef1ac015 246 @param Flags Indicates if ROM found and if PC-AT. Multiple bits can be set as follows:\r
247 00 = No ROM\r
248 01 = ROM Found\r
249 02 = ROM is a valid legacy ROM\r
79964ac8 250\r
251 @retval EFI_SUCCESS Legacy Option ROM availible for this device\r
252 @retval EFI_UNSUPPORTED Legacy Option ROM not supported.\r
253\r
254**/\r
255typedef\r
256EFI_STATUS\r
69686d56 257(EFIAPI *EFI_LEGACY_BIOS_CHECK_ROM)(\r
79964ac8 258 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
259 IN EFI_HANDLE PciHandle,\r
260 OUT VOID **RomImage, OPTIONAL\r
261 OUT UINTN *RomSize, OPTIONAL\r
262 OUT UINTN *Flags\r
263 );\r
264\r
265/**\r
266 Load a legacy PC-AT OPROM on the PciHandle device. Return information\r
267 about how many disks were added by the OPROM and the shadow address and\r
268 size. DiskStart & DiskEnd are INT 13h drive letters. Thus 0x80 is C:\r
269\r
270 @param This Protocol instance pointer.\r
271 @param PciHandle The PCI PC-AT OPROM from this devices ROM BAR will be loaded.\r
272 This value is NULL if RomImage is non-NULL. This is the normal\r
273 case.\r
274 @param RomImage A PCI PC-AT ROM image. This argument is non-NULL if there is\r
275 no hardware associated with the ROM and thus no PciHandle,\r
276 otherwise is must be NULL.\r
277 Example is PXE base code.\r
ef1ac015 278 @param Flags The type of ROM discovered. Multiple bits can be set, as follows:\r
279 00 = No ROM.\r
280 01 = ROM found.\r
281 02 = ROM is a valid legacy ROM.\r
79964ac8 282 @param DiskStart Disk number of first device hooked by the ROM. If DiskStart\r
283 is the same as DiskEnd no disked were hooked.\r
284 @param DiskEnd Disk number of the last device hooked by the ROM.\r
285 @param RomShadowAddress Shadow address of PC-AT ROM\r
286 @param RomShadowSize Size of RomShadowAddress in bytes\r
287\r
288 @retval EFI_SUCCESS Thunk completed, see Regs for status.\r
289 @retval EFI_INVALID_PARAMETER PciHandle not found\r
290\r
291**/\r
292typedef\r
293EFI_STATUS\r
69686d56 294(EFIAPI *EFI_LEGACY_BIOS_INSTALL_ROM)(\r
79964ac8 295 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
296 IN EFI_HANDLE PciHandle,\r
297 IN VOID **RomImage,\r
298 OUT UINTN *Flags,\r
299 OUT UINT8 *DiskStart, OPTIONAL\r
300 OUT UINT8 *DiskEnd, OPTIONAL\r
301 OUT VOID **RomShadowAddress, OPTIONAL\r
302 OUT UINT32 *ShadowedRomSize OPTIONAL\r
303 );\r
304\r
305/**\r
ef1ac015 306 This function attempts to traditionally boot the specified BootOption. If the EFI context has\r
307 been compromised, this function will not return. This procedure is not used for loading an EFIaware\r
308 OS off a traditional device. The following actions occur:\r
309 - Get EFI SMBIOS data structures, convert them to a traditional format, and copy to\r
310 Compatibility16.\r
311 - Get a pointer to ACPI data structures and copy the Compatibility16 RSD PTR to F0000 block.\r
312 - Find the traditional SMI handler from a firmware volume and register the traditional SMI\r
313 handler with the EFI SMI handler.\r
314 - Build onboard IDE information and pass this information to the Compatibility16 code.\r
315 - Make sure all PCI Interrupt Line registers are programmed to match 8259.\r
316 - Reconfigure SIO devices from EFI mode (polled) into traditional mode (interrupt driven).\r
317 - Shadow all PCI ROMs.\r
318 - Set up BDA and EBDA standard areas before the legacy boot.\r
319 - Construct the Compatibility16 boot memory map and pass it to the Compatibility16 code.\r
320 - Invoke the Compatibility16 table function Compatibility16PrepareToBoot(). This\r
321 invocation causes a thunk into the Compatibility16 code, which sets all appropriate internal\r
322 data structures. The boot device list is a parameter.\r
323 - Invoke the Compatibility16 Table function Compatibility16Boot(). This invocation\r
324 causes a thunk into the Compatibility16 code, which does an INT19.\r
325 - If the Compatibility16Boot() function returns, then the boot failed in a graceful\r
326 manner—i.e., EFI code is still valid. An ungraceful boot failure causes a reset because the state\r
327 of EFI code is unknown.\r
79964ac8 328\r
329 @param This Protocol instance pointer.\r
330 @param BootOption EFI Device Path from BootXXXX variable.\r
331 @param LoadOptionSize Size of LoadOption in size.\r
332 @param LoadOption LoadOption from BootXXXX variable\r
333\r
ef1ac015 334 @retval EFI_DEVICE_ERROR Failed to boot from any boot device and memory is uncorrupted.\r
335 Note: This function normally never returns. It will either boot the\r
336 OS or reset the system if memory has been "corrupted" by loading\r
337 a boot sector and passing control to it.\r
79964ac8 338\r
339**/\r
340typedef\r
341EFI_STATUS\r
69686d56 342(EFIAPI *EFI_LEGACY_BIOS_BOOT)(\r
79964ac8 343 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
344 IN BBS_BBS_DEVICE_PATH *BootOption,\r
345 IN UINT32 LoadOptionsSize,\r
346 IN VOID *LoadOptions\r
347 );\r
348\r
349/**\r
ef1ac015 350 This function takes the Leds input parameter and sets/resets the BDA accordingly. \r
351 Leds is also passed to Compatibility16 code, in case any special processing is required. \r
352 This function is normally called from EFI Setup drivers that handle userselectable\r
353 keyboard options such as boot with NUM LOCK on/off. This function does not\r
354 touch the keyboard or keyboard LEDs but only the BDA.\r
79964ac8 355\r
356 @param This Protocol instance pointer.\r
357 @param Leds Status of current Scroll, Num & Cap lock LEDS\r
358 Bit 0 is Scroll Lock 0 = Not locked\r
359 Bit 1 is Num Lock\r
360 Bit 2 is Caps Lock\r
361\r
ef1ac015 362 @retval EFI_SUCCESS The BDA was updated successfully.\r
79964ac8 363\r
364**/\r
365typedef\r
366EFI_STATUS\r
69686d56 367(EFIAPI *EFI_LEGACY_BIOS_UPDATE_KEYBOARD_LED_STATUS)(\r
79964ac8 368 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
369 IN UINT8 Leds\r
370 );\r
371\r
372/**\r
373 Retrieve legacy BBS info and assign boot priority.\r
374\r
375 @param This Protocol instance pointer.\r
376 @param HddCount Number of HDD_INFO structures\r
377 @param HddInfo Onboard IDE controller information\r
378 @param BbsCount Number of BBS_TABLE structures\r
ef1ac015 379 @param BbsTable Point to List of BBS_TABLE\r
79964ac8 380\r
381 @retval EFI_SUCCESS Tables returned\r
382\r
383**/\r
384typedef\r
385EFI_STATUS\r
69686d56 386(EFIAPI *EFI_LEGACY_BIOS_GET_BBS_INFO)(\r
79964ac8 387 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
388 OUT UINT16 *HddCount,\r
389 OUT HDD_INFO **HddInfo,\r
390 OUT UINT16 *BbsCount,\r
391 IN OUT BBS_TABLE **BbsTable\r
392 );\r
393\r
394/**\r
395 Assign drive number to legacy HDD drives prior to booting an EFI\r
396 aware OS so the OS can access drives without an EFI driver.\r
397\r
398 @param This Protocol instance pointer.\r
399 @param BbsCount Number of BBS_TABLE structures\r
400 @param BbsTable List BBS entries\r
401\r
402 @retval EFI_SUCCESS Drive numbers assigned\r
403\r
404**/\r
405typedef\r
406EFI_STATUS\r
69686d56 407(EFIAPI *EFI_LEGACY_BIOS_PREPARE_TO_BOOT_EFI)(\r
79964ac8 408 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
409 OUT UINT16 *BbsCount,\r
410 OUT BBS_TABLE **BbsTable\r
411 );\r
412\r
413/**\r
414 To boot from an unconventional device like parties and/or execute\r
415 HDD diagnostics.\r
416\r
417 @param This Protocol instance pointer.\r
418 @param Attributes How to interpret the other input parameters\r
419 @param BbsEntry The 0-based index into the BbsTable for the parent\r
420 device.\r
421 @param BeerData Pointer to the 128 bytes of ram BEER data.\r
422 @param ServiceAreaData Pointer to the 64 bytes of raw Service Area data. The\r
423 caller must provide a pointer to the specific Service\r
424 Area and not the start all Service Areas.\r
425\r
ef1ac015 426 @retval EFI_INVALID_PARAMETER if error. Does NOT return if no error.\r
79964ac8 427\r
428**/\r
429typedef\r
430EFI_STATUS\r
69686d56 431(EFIAPI *EFI_LEGACY_BIOS_BOOT_UNCONVENTIONAL_DEVICE)(\r
79964ac8 432 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
433 IN UDC_ATTRIBUTES Attributes,\r
434 IN UINTN BbsEntry,\r
435 IN VOID *BeerData,\r
436 IN VOID *ServiceAreaData\r
437 );\r
438\r
439/**\r
440 Shadow all legacy16 OPROMs that haven't been shadowed.\r
441 Warning: Use this with caution. This routine disconnects all EFI\r
442 drivers. If used externally then caller must re-connect EFI\r
443 drivers.\r
444\r
445 @retval EFI_SUCCESS OPROMs shadowed\r
446\r
447**/\r
448typedef\r
449EFI_STATUS\r
69686d56 450(EFIAPI *EFI_LEGACY_BIOS_SHADOW_ALL_LEGACY_OPROMS)(\r
79964ac8 451 IN EFI_LEGACY_BIOS_PROTOCOL *This\r
452 );\r
453\r
454/**\r
455 Get a region from the LegacyBios for S3 usage.\r
456\r
457 @param This Protocol instance pointer.\r
458 @param LegacyMemorySize Size of required region\r
459 @param Region Region to use.\r
460 00 = Either 0xE0000 or 0xF0000 block\r
461 Bit0 = 1 0xF0000 block\r
462 Bit1 = 1 0xE0000 block\r
463 @param Alignment Address alignment. Bit mapped. First non-zero\r
464 bit from right is alignment.\r
465 @param LegacyMemoryAddress Region Assigned\r
466\r
467 @retval EFI_SUCCESS Region assigned\r
ef1ac015 468 @retval EFI_ACCESS_DENIED The function was previously invoked.\r
79964ac8 469 @retval Other Region not assigned\r
470\r
471**/\r
472typedef\r
473EFI_STATUS\r
69686d56 474(EFIAPI *EFI_LEGACY_BIOS_GET_LEGACY_REGION)(\r
79964ac8 475 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
476 IN UINTN LegacyMemorySize,\r
477 IN UINTN Region,\r
478 IN UINTN Alignment,\r
479 OUT VOID **LegacyMemoryAddress\r
480 );\r
481\r
482/**\r
483 Get a region from the LegacyBios for Tiano usage. Can only be invoked once.\r
484\r
485 @param This Protocol instance pointer.\r
486 @param LegacyMemorySize Size of data to copy\r
487 @param LegacyMemoryAddress Legacy Region destination address\r
488 Note: must be in region assigned by\r
489 LegacyBiosGetLegacyRegion\r
490 @param LegacyMemorySourceAddress\r
ef1ac015 491 Source of the data to copy.\r
79964ac8 492\r
493 @retval EFI_SUCCESS Region assigned\r
494 @retval EFI_ACCESS_DENIED Destination outside assigned region\r
495\r
496**/\r
497typedef\r
498EFI_STATUS\r
69686d56 499(EFIAPI *EFI_LEGACY_BIOS_COPY_LEGACY_REGION)(\r
79964ac8 500 IN EFI_LEGACY_BIOS_PROTOCOL *This,\r
501 IN UINTN LegacyMemorySize,\r
502 IN VOID *LegacyMemoryAddress,\r
503 IN VOID *LegacyMemorySourceAddress\r
504 );\r
505\r
506/**\r
79964ac8 507 Abstracts the traditional BIOS from the rest of EFI. The LegacyBoot()\r
508 member function allows the BDS to support booting a traditional OS.\r
509 EFI thunks drivers that make EFI bindings for BIOS INT services use\r
510 all the other member functions.\r
79964ac8 511**/\r
512struct _EFI_LEGACY_BIOS_PROTOCOL {\r
2bbaeb0d 513 ///\r
514 /// Performs traditional software INT. See the Int86() function description.\r
515 ///\r
79964ac8 516 EFI_LEGACY_BIOS_INT86 Int86;\r
2bbaeb0d 517 \r
518 ///\r
519 /// Performs a far call into Compatibility16 or traditional OpROM code.\r
520 ///\r
79964ac8 521 EFI_LEGACY_BIOS_FARCALL86 FarCall86;\r
2bbaeb0d 522 \r
523 ///\r
524 /// Checks if a traditional OpROM exists for this device.\r
525 ///\r
79964ac8 526 EFI_LEGACY_BIOS_CHECK_ROM CheckPciRom;\r
2bbaeb0d 527 \r
528 ///\r
529 /// Loads a traditional OpROM in traditional OpROM address space.\r
530 ///\r
79964ac8 531 EFI_LEGACY_BIOS_INSTALL_ROM InstallPciRom;\r
2bbaeb0d 532 \r
533 ///\r
534 /// Boots a traditional OS.\r
535 ///\r
79964ac8 536 EFI_LEGACY_BIOS_BOOT LegacyBoot;\r
2bbaeb0d 537 \r
538 ///\r
539 /// Updates BDA to reflect the current EFI keyboard LED status.\r
540 ///\r
79964ac8 541 EFI_LEGACY_BIOS_UPDATE_KEYBOARD_LED_STATUS UpdateKeyboardLedStatus;\r
2bbaeb0d 542 \r
543 ///\r
544 /// Allows an external agent, such as BIOS Setup, to get the BBS data.\r
545 ///\r
79964ac8 546 EFI_LEGACY_BIOS_GET_BBS_INFO GetBbsInfo;\r
2bbaeb0d 547 \r
548 ///\r
549 /// Causes all legacy OpROMs to be shadowed.\r
550 ///\r
79964ac8 551 EFI_LEGACY_BIOS_SHADOW_ALL_LEGACY_OPROMS ShadowAllLegacyOproms;\r
2bbaeb0d 552 \r
553 ///\r
554 /// Performs all actions prior to boot. Used when booting an EFI-aware OS\r
555 /// rather than a legacy OS. \r
556 ///\r
79964ac8 557 EFI_LEGACY_BIOS_PREPARE_TO_BOOT_EFI PrepareToBootEfi;\r
2bbaeb0d 558 \r
559 ///\r
560 /// Allows EFI to reserve an area in the 0xE0000 or 0xF0000 block.\r
561 ///\r
79964ac8 562 EFI_LEGACY_BIOS_GET_LEGACY_REGION GetLegacyRegion;\r
2bbaeb0d 563 \r
564 ///\r
565 /// Allows EFI to copy data to the area specified by GetLegacyRegion.\r
566 ///\r
79964ac8 567 EFI_LEGACY_BIOS_COPY_LEGACY_REGION CopyLegacyRegion;\r
2bbaeb0d 568 \r
569 ///\r
570 /// Allows the user to boot off an unconventional device such as a PARTIES partition.\r
571 ///\r
79964ac8 572 EFI_LEGACY_BIOS_BOOT_UNCONVENTIONAL_DEVICE BootUnconventionalDevice;\r
573};\r
574\r
575extern EFI_GUID gEfiLegacyBiosProtocolGuid;\r
576\r
577#endif\r