1 /** @file
2   This file defines the Human Interface Infrastructure protocol which will
3   be used by resources which want to publish IFR/Font/String data and have it
4   collected by the Configuration engine.
5 
6   @par Revision Reference:
7   This protocol is defined in HII spec 0.92.
8 
9   Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
10 
11   SPDX-License-Identifier: BSD-2-Clause-Patent
12 
13 **/
14 
15 #ifndef _FRAMEWORK_HII_H_
16 #define _FRAMEWORK_HII_H_
17 
18 //#include <PiDxe.h>
19 
20 //
21 // To get EFI_GRAPHICS_OUTPUT_BLT_PIXEL,
22 // is defined in MdePkg/Protocol/GraphicsOutput.h
23 //
24 #include <Protocol/GraphicsOutput.h>
25 
26 #define EFI_HII_PROTOCOL_GUID \
27   { \
28     0xd7ad636e, 0xb997, 0x459b, {0xbf, 0x3f, 0x88, 0x46, 0x89, 0x79, 0x80, 0xe1} \
29   }
30 
31 // BugBug:
32 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
33 // If UGA goes away we need to put this some place. I'm not sure where?
34 //
35 //typedef struct {
36 //  UINT8 Blue;
37 //  UINT8 Green;
38 //  UINT8 Red;
39 //  UINT8 Reserved;
40 //} EFI_UGA_PIXEL;
41 
42 //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
43 //
44 
45 typedef struct _EFI_HII_PROTOCOL  EFI_HII_PROTOCOL;
46 
47 //
48 // Global definition
49 //
50 #define NARROW_CHAR         0xFFF0
51 #define WIDE_CHAR           0xFFF1
52 #define NON_BREAKING_CHAR   0xFFF2
53 #define GLYPH_WIDTH         8
54 #define GLYPH_HEIGHT        19
55 
56 #define EFI_HII_FONT        1
57 #define EFI_HII_STRING      2
58 #define EFI_HII_IFR         3
59 #define EFI_HII_KEYBOARD    4
60 #define EFI_HII_HANDLES     5
61 #define EFI_HII_VARIABLE    6
62 #define EFI_HII_DEVICE_PATH 7
63 
64 
65 // References to string tokens must use this macro to enable scanning for
66 // token usages.
67 //
68 #define STRING_TOKEN(t) t
69 
70 //
71 // The following types are currently defined:
72 // EFI_FROM_ID has been defined in UEFI spec.
73 //
74 typedef UINT16  EFI_FORM_LABEL;
75 
76 #pragma pack(1)
77 
78 typedef struct {
79   UINT32  Length;
80   UINT16  Type;
81 } EFI_HII_PACK_HEADER;
82 
83 //
84 // A form list consists of a large variety of structure
85 // possibilities so to represent the binary blob of data
86 // associated with a package of forms, we will assume a
87 // pointer to a self-describing data buffer.
88 //
89 typedef struct {
90   EFI_HII_PACK_HEADER Header;
91 } EFI_HII_IFR_PACK;
92 
93 typedef struct {
94   EFI_HII_PACK_HEADER Header;           // Must be filled in
95   EFI_HANDLE          ImageHandle;      // Must be filled in
96   EFI_HANDLE          DeviceHandle;     // Optional
97   EFI_HANDLE          ControllerHandle; // Optional
98   EFI_HANDLE          CallbackHandle;   // Optional
99   EFI_HANDLE          COBExportHandle;  // Optional
100 } EFI_HII_HANDLE_PACK;
101 
102 //
103 // ********************************************************
104 // EFI_VARIABLE_CONTENTS
105 // ********************************************************
106 //
107 typedef struct {
108   EFI_HII_PACK_HEADER Header;
109   EFI_GUID            VariableGuid;
110   UINT32              VariableNameLength;
111   UINT16              VariableId;
112   //
113   //  CHAR16                VariableName[]; //Null-terminated
114   //
115 } EFI_HII_VARIABLE_PACK;
116 
117 //
118 // ********************************************************
119 // EFI_DEVICE_PATH_PACK
120 // ********************************************************
121 //
122 typedef struct {
123   EFI_HII_PACK_HEADER Header;
124   //
125   //  EFI_DEVICE_PATH       DevicePath[];
126   //
127 } EFI_HII_DEVICE_PATH_PACK;
128 
129 //
130 // ********************************************************
131 // EFI_HII_DATA_TABLE
132 // ********************************************************
133 //
134 typedef struct {
135   EFI_HII_HANDLE  HiiHandle;
136   EFI_GUID        PackageGuid;
137   UINT32          DataTableSize;
138   UINT32          IfrDataOffset;
139   UINT32          StringDataOffset;
140   UINT32          VariableDataOffset;
141   UINT32          DevicePathOffset;
142   UINT32          NumberOfVariableData;
143   UINT32          NumberOfLanguages;
144   //
145   // EFI_HII_DEVICE_PATH_PACK DevicePath[];
146   // EFI_HII_VARIABLE_PACK VariableData[];
147   // EFI_HII_IFR_PACK IfrData;
148   // EFI_HII_STRING_PACK StringData[];
149   //
150 } EFI_HII_DATA_TABLE;
151 
152 //
153 // ********************************************************
154 // EFI_HII_EXPORT_TABLE
155 // ********************************************************
156 //
157 typedef struct {
158   UINT32    NumberOfHiiDataTables;
159   EFI_GUID  Revision;
160   //
161   // EFI_HII_DATA_TABLE HiiDataTable[];
162   //
163 } EFI_HII_EXPORT_TABLE;
164 
165 typedef struct {
166   BOOLEAN               FormSetUpdate;      // If TRUE, next variable is significant
167   EFI_PHYSICAL_ADDRESS  FormCallbackHandle; // If not 0, will update Formset with this info
168   BOOLEAN               FormUpdate;         // If TRUE, next variable is significant
169   UINT16                FormValue;          // specify which form is to be updated if FormUpdate value is TRUE.
170   STRING_REF            FormTitle;          // If not 0, will update Form with this info
171   UINT16                DataCount;          // The number of Data entries in this structure
172   UINT8                 *Data;              // An array of 1+ op-codes, specified by DataCount
173 } EFI_HII_UPDATE_DATA;
174 
175 //
176 // String attributes
177 //
178 #define LANG_RIGHT_TO_LEFT  0x00000001
179 
180 //
181 // A string package is used to localize strings to a particular
182 // language.  The package is associated with a particular driver
183 // or set of drivers.  Tools are used to associate tokens with
184 // string references in forms and in programs.  These tokens are
185 // language agnostic.  When paired with a language pack (directly
186 // or indirectly), the string token resolves into an actual
187 // UNICODE string.  The NumStringPointers determines how many
188 // StringPointers (offset values) there are as well as the total
189 // number of Strings that are defined.
190 //
191 typedef struct {
192   EFI_HII_PACK_HEADER Header;
193   RELOFST             LanguageNameString;
194   RELOFST             PrintableLanguageName;
195   UINT32              NumStringPointers;
196   UINT32              Attributes;
197   //
198   //  RELOFST               StringPointers[];
199   //  EFI_STRING            Strings[];
200   //
201 } EFI_HII_STRING_PACK;
202 
203 //
204 // Glyph Attributes
205 //
206 #define EFI_GLYPH_NON_SPACING   1
207 #define EFI_GLYPH_WIDE          2
208 
209 typedef struct {
210   CHAR16  UnicodeWeight;
211   UINT8   Attributes;
212   UINT8   GlyphCol1[GLYPH_HEIGHT];
213 } EFI_NARROW_GLYPH;
214 
215 typedef struct {
216   CHAR16  UnicodeWeight;
217   UINT8   Attributes;
218   UINT8   GlyphCol1[GLYPH_HEIGHT];
219   UINT8   GlyphCol2[GLYPH_HEIGHT];
220   UINT8   Pad[3];
221 } EFI_WIDE_GLYPH;
222 
223 //
224 // A font list consists of a font header followed by a series
225 // of glyph structures.  Note that fonts are not language specific.
226 //
227 typedef struct {
228   EFI_HII_PACK_HEADER Header;
229   UINT16              NumberOfNarrowGlyphs;
230   UINT16              NumberOfWideGlyphs;
231 } EFI_HII_FONT_PACK;
232 
233 //
234 // The IfrData in the EFI_HII_IFR_PACK structure definition
235 // is variable length, and not really part of the header. To
236 // simplify from code the size of the header, define an
237 // identical structure that does not include the IfrData field.
238 // Then use sizeof() this new structure to determine the
239 // actual size of the header.
240 //
241 typedef struct {
242   EFI_HII_PACK_HEADER Header;
243 } EFI_HII_IFR_PACK_HEADER;
244 
245 //
246 // pedef EFI_HII_PACK_HEADER EFI_HII_IFR_PACK_HEADER;
247 //
248 typedef enum {
249   EfiKeyLCtrl,
250   EfiKeyA0,
251   EfiKeyLAlt,
252   EfiKeySpaceBar,
253   EfiKeyA2,
254   EfiKeyA3,
255   EfiKeyA4,
256   EfiKeyRCtrl,
257   EfiKeyLeftArrow,
258   EfiKeyDownArrow,
259   EfiKeyRightArrow,
260   EfiKeyZero,
261   EfiKeyPeriod,
262   EfiKeyEnter,
263   EfiKeyLShift,
264   EfiKeyB0,
265   EfiKeyB1,
266   EfiKeyB2,
267   EfiKeyB3,
268   EfiKeyB4,
269   EfiKeyB5,
270   EfiKeyB6,
271   EfiKeyB7,
272   EfiKeyB8,
273   EfiKeyB9,
274   EfiKeyB10,
275   EfiKeyRshift,
276   EfiKeyUpArrow,
277   EfiKeyOne,
278   EfiKeyTwo,
279   EfiKeyThree,
280   EfiKeyCapsLock,
281   EfiKeyC1,
282   EfiKeyC2,
283   EfiKeyC3,
284   EfiKeyC4,
285   EfiKeyC5,
286   EfiKeyC6,
287   EfiKeyC7,
288   EfiKeyC8,
289   EfiKeyC9,
290   EfiKeyC10,
291   EfiKeyC11,
292   EfiKeyC12,
293   EfiKeyFour,
294   EfiKeyFive,
295   EfiKeySix,
296   EfiKeyPlus,
297   EfiKeyTab,
298   EfiKeyD1,
299   EfiKeyD2,
300   EfiKeyD3,
301   EfiKeyD4,
302   EfiKeyD5,
303   EfiKeyD6,
304   EfiKeyD7,
305   EfiKeyD8,
306   EfiKeyD9,
307   EfiKeyD10,
308   EfiKeyD11,
309   EfiKeyD12,
310   EfiKeyD13,
311   EfiKeyDel,
312   EfiKeyEnd,
313   EfiKeyPgDn,
314   EfiKeySeven,
315   EfiKeyEight,
316   EfiKeyNine,
317   EfiKeyE0,
318   EfiKeyE1,
319   EfiKeyE2,
320   EfiKeyE3,
321   EfiKeyE4,
322   EfiKeyE5,
323   EfiKeyE6,
324   EfiKeyE7,
325   EfiKeyE8,
326   EfiKeyE9,
327   EfiKeyE10,
328   EfiKeyE11,
329   EfiKeyE12,
330   EfiKeyBackSpace,
331   EfiKeyIns,
332   EfiKeyHome,
333   EfiKeyPgUp,
334   EfiKeyNLck,
335   EfiKeySlash,
336   EfiKeyAsterisk,
337   EfiKeyMinus,
338   EfiKeyEsc,
339   EfiKeyF1,
340   EfiKeyF2,
341   EfiKeyF3,
342   EfiKeyF4,
343   EfiKeyF5,
344   EfiKeyF6,
345   EfiKeyF7,
346   EfiKeyF8,
347   EfiKeyF9,
348   EfiKeyF10,
349   EfiKeyF11,
350   EfiKeyF12,
351   EfiKeyPrint,
352   EfiKeySLck,
353   EfiKeyPause
354 } EFI_KEY;
355 
356 typedef struct {
357   EFI_KEY Key;
358   CHAR16  Unicode;
359   CHAR16  ShiftedUnicode;
360   CHAR16  AltGrUnicode;
361   CHAR16  ShiftedAltGrUnicode;
362   UINT16  Modifier;
363 } EFI_KEY_DESCRIPTOR;
364 
365 //
366 // This structure allows a sparse set of keys to be redefined
367 // or a complete redefinition of the keyboard layout.  Most
368 // keyboards have a lot of commonality in their layouts, therefore
369 // only defining those keys that need to change from the default
370 // minimizes the passed in information.
371 //
372 // Additionally, when an update occurs, the active keyboard layout
373 // will be switched to the newly updated keyboard layout.  This
374 // allows for situations that when a keyboard layout driver is
375 // loaded as part of system initialization, the system will default
376 // the keyboard behavior to the new layout.
377 //
378 // Each call to update the keyboard mapping should contain the
379 // complete set of key descriptors to be updated, since every
380 // call to the HII which contains an EFI_HII_KEYBOARD_PACK will
381 // wipe the previous set of overrides.  A call to
382 //
383 typedef struct {
384   EFI_HII_PACK_HEADER Header;
385   EFI_KEY_DESCRIPTOR  *Descriptor;
386   UINT8               DescriptorCount;
387 } EFI_HII_KEYBOARD_PACK;
388 
389 //
390 // The EFI_HII_PACKAGES can contain different types of packages just
391 // after the structure as inline data.
392 //
393 typedef struct {
394   UINTN     NumberOfPackages;
395   EFI_GUID  *GuidId;
396   //
397   // EFI_HII_HANDLE_PACK    *HandlePack;        // Only one pack.
398   // EFI_HII_IFR_PACK       *IfrPack;           // Only one pack.
399   // EFI_HII_FONT_PACK      *FontPack[];        // Multiple packs ok
400   // EFI_HII_STRING_PACK    *StringPack[];      // Multiple packs ok
401   // EFI_HII_KEYBOARD_PACK  *KeyboardPack[];    // Multiple packs ok
402   //
403 } EFI_HII_PACKAGES;
404 
405 typedef struct _EFI_HII_VARIABLE_PACK_LIST {
406   struct _EFI_HII_VARIABLE_PACK_LIST   *NextVariablePack;
407   EFI_HII_VARIABLE_PACK                *VariablePack;
408 } EFI_HII_VARIABLE_PACK_LIST;
409 
410 
411 #pragma pack()
412 
413 /**
414   Registers the various packs that are passed in via the Packages parameter.
415 
416   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
417   @param  Packages              A pointer to an EFI_HII_PACKAGES package instance.
418   @param  Handle                A pointer to the EFI_HII_HANDLE instance.
419 
420   @retval EFI_SUCCESS           Data was extracted from Packages, the database
421                                 was updated with the data, and Handle returned successfully.
422   @retval EFI_INVALID_PARAMETER The content of Packages was invalid.
423 
424 **/
425 typedef
426 EFI_STATUS
427 (EFIAPI *EFI_HII_NEW_PACK) (
428   IN  EFI_HII_PROTOCOL    *This,
429   IN  EFI_HII_PACKAGES    *Packages,
430   OUT EFI_HII_HANDLE      *Handle
431   );
432 
433 /**
434   Removes a package from the HII database.
435 
436   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
437   @param  Handle                The handle that was registered to the data that is requested
438                                 for removal.
439 
440   @retval EFI_SUCCESS           The data associated with the Handle was removed
441                                 from the HII database.
442   @retval EFI_INVALID_PARAMETER The Handle was not valid.
443 
444 **/
445 typedef
446 EFI_STATUS
447 (EFIAPI *EFI_HII_REMOVE_PACK) (
448   IN EFI_HII_PROTOCOL    *This,
449   IN EFI_HII_HANDLE      Handle
450   );
451 
452 /**
453   Determines the handles that are currently active in the database.
454 
455   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
456   @param  HandleBufferLength    On input, a pointer to the length of the handle
457                                 buffer. On output, the length of the handle buffer that is required
458                                 for the handles found.
459   @param  Handle                An array of EFI_HII_HANDLE instances returned.
460 
461   @retval EFI_SUCCESS           Handle was updated successfully.
462   @retval EFI_BUFFER_TOO_SMALL  The HandleBufferLength parameter indicates
463                                 that Handle is too small to support the number of handles.
464 
465 **/
466 typedef
467 EFI_STATUS
468 (EFIAPI *EFI_HII_FIND_HANDLES) (
469   IN     EFI_HII_PROTOCOL *This,
470   IN OUT UINT16           *HandleBufferLength,
471   OUT    EFI_HII_HANDLE   *Handle
472   );
473 
474 /**
475   Exports the contents of the database into a buffer.
476 
477   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
478   @param  Handle                An EFI_HII_HANDLE that corresponds to the desired
479                                 handle to export. If the value is 0, the entire database will be exported.
480                                 In either case, the data will be exported in a format described by the
481                                 structure definition of EFI_HII_EXPORT_TABLE.
482   @param  BufferSize
483   On input, a pointer to the length of the buffer. On output, the length
484   of the buffer that is required for the export data.
485   @param  Buffer                A pointer to a buffer that will contain the results of the export function.
486 
487   @retval EFI_SUCCESS           The buffer was successfully filled with BufferSize amount of data.
488   @retval EFI_BUFFER_TOO_SMALL  The value in BufferSize was too small to contain the export data.
489 
490 **/
491 typedef
492 EFI_STATUS
493 (EFIAPI *EFI_HII_EXPORT) (
494   IN     EFI_HII_PROTOCOL *This,
495   IN     EFI_HII_HANDLE   Handle,
496   IN OUT UINTN            *BufferSize,
497   OUT    VOID             *Buffer
498   );
499 
500 /**
501   Remove any new strings that were added after the initial string export
502   for this handle.
503 
504   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
505   @param  Handle                The handle on which the string resides.
506 
507   @retval EFI_SUCCESS           Remove strings from the handle successfully.
508   @retval EFI_INVALID_PARAMETER The Handle was unknown.
509 
510 **/
511 typedef
512 EFI_STATUS
513 (EFIAPI *EFI_HII_RESET_STRINGS) (
514   IN     EFI_HII_PROTOCOL   *This,
515   IN     EFI_HII_HANDLE     Handle
516   );
517 
518 /**
519   Tests if all of the characters in a string have corresponding font characters.
520 
521   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
522   @param  StringToTest          A pointer to a Unicode string.
523   @param  FirstMissing          A pointer to an index into the string. On input,
524                                 the index of the first character in the StringToTest to examine. On exit,
525                                 the index of the first character encountered for which a glyph is unavailable.
526                                 If all glyphs in the string are available, the index is the index of the
527                                 terminator of the string.
528   @param  GlyphBufferSize       A pointer to a value. On output, if the function
529                                 returns EFI_SUCCESS, it contains the amount of memory that is required to
530                                 store the string's glyph equivalent.
531 
532   @retval EFI_SUCCESS           All glyphs are available. Note that an empty string
533                                 always returns this value.
534   @retval EFI_NOT_FOUND         A glyph was not found for a character.
535 
536 **/
537 typedef
538 EFI_STATUS
539 (EFIAPI *EFI_HII_TEST_STRING) (
540   IN     EFI_HII_PROTOCOL  *This,
541   IN     CHAR16            *StringToTest,
542   IN OUT UINT32            *FirstMissing,
543   OUT    UINT32            *GlyphBufferSize
544   );
545 
546 /**
547   Translates a Unicode character into the corresponding font glyph.
548 
549   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
550   @param  Source                A pointer to a Unicode string.
551   @param  Index                 On input, the offset into the string from which to fetch
552                                 the character.On successful completion, the index is updated to the first
553                                 character past the character(s) making up the just extracted glyph.
554   @param  GlyphBuffer           Pointer to an array where the glyphs corresponding
555                                 to the characters in the source may be stored. GlyphBuffer is assumed
556                                 to be wide enough to accept a wide glyph character.
557   @param  BitWidth              If EFI_SUCCESS was returned, the UINT16 pointed to by
558                                 this value is filled with the length of the glyph in pixels. It is unchanged
559                                 if the call was unsuccessful.
560   @param  InternalStatus        The cell pointed to by this parameter must be
561                                 initialized to zero prior to invoking the call the first time for any string.
562 
563   @retval EFI_SUCCESS           It worked.
564   @retval EFI_NOT_FOUND         A glyph for a character was not found.
565 
566 **/
567 typedef
568 EFI_STATUS
569 (EFIAPI *EFI_HII_GET_GLYPH) (
570   IN     EFI_HII_PROTOCOL  *This,
571   IN     CHAR16            *Source,
572   IN OUT UINT16            *Index,
573   OUT    UINT8             **GlyphBuffer,
574   OUT    UINT16            *BitWidth,
575   IN OUT UINT32            *InternalStatus
576   );
577 
578 /**
579   Translates a glyph into the format required for input to the Universal
580   Graphics Adapter (UGA) Block Transfer (BLT) routines.
581 
582   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
583   @param  GlyphBuffer           A pointer to the buffer that contains glyph data.
584   @param  Foreground            The foreground setting requested to be used for the
585                                 generated BltBuffer data.
586   @param  Background            The background setting requested to be used for the
587                                 generated BltBuffer data.
588   @param  Count                 The entry in the BltBuffer upon which to act.
589   @param  Width                 The width in bits of the glyph being converted.
590   @param  Height                The height in bits of the glyph being converted
591   @param  BltBuffer             A pointer to the buffer that contains the data that is
592                                 ready to be used by the UGA BLT routines.
593 
594   @retval EFI_SUCCESS           It worked.
595   @retval EFI_NOT_FOUND         A glyph for a character was not found.
596 
597 **/
598 typedef
599 EFI_STATUS
600 (EFIAPI *EFI_HII_GLYPH_TO_BLT) (
601   IN     EFI_HII_PROTOCOL             *This,
602   IN     UINT8                        *GlyphBuffer,
603   IN     EFI_GRAPHICS_OUTPUT_BLT_PIXEL Foreground,
604   IN     EFI_GRAPHICS_OUTPUT_BLT_PIXEL Background,
605   IN     UINTN                         Count,
606   IN     UINTN                         Width,
607   IN     UINTN                         Height,
608   IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL *BltBuffer
609   );
610 
611 /**
612   Allows a new string to be added to an already existing string package.
613 
614   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
615   @param  Pointer               to a NULL-terminated string containing a single ISO 639-2
616                                 language identifier, indicating the language in which the string is translated.
617   @param  Handle                The handle of the language pack to which the string is to be added.
618   @param  Reference             The identifier of the string to be added. If the reference
619                                 value is zero, then the string will be assigned a new identifier on that
620                                 handle for the language specified. Otherwise, the string will be updated
621                                 with the NewString Value.
622   @param  NewString             The string to be added.
623 
624   @retval EFI_SUCCESS           The string was effectively registered.
625   @retval EFI_INVALID_PARAMETER The Handle was unknown.
626 
627 **/
628 typedef
629 EFI_STATUS
630 (EFIAPI *EFI_HII_NEW_STRING) (
631   IN     EFI_HII_PROTOCOL      *This,
632   IN     CHAR16                *Language,
633   IN     EFI_HII_HANDLE        Handle,
634   IN OUT STRING_REF            *Reference,
635   IN     CHAR16                *NewString
636   );
637 
638 /**
639   Allows a program to determine the primary languages that are supported
640   on a given handle.
641 
642   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
643   @param  Handle                The handle on which the strings reside.
644   @param  LanguageString        A string allocated by GetPrimaryLanguages() that
645                                 contains a list of all primary languages registered on the handle.
646 
647   @retval EFI_SUCCESS           LanguageString was correctly returned.
648   @retval EFI_INVALID_PARAMETER The Handle was unknown.
649 
650 **/
651 typedef
652 EFI_STATUS
653 (EFIAPI *EFI_HII_GET_PRI_LANGUAGES) (
654   IN  EFI_HII_PROTOCOL    *This,
655   IN  EFI_HII_HANDLE      Handle,
656   OUT EFI_STRING          *LanguageString
657   );
658 
659 /**
660   Allows a program to determine which secondary languages are supported
661   on a given handle for a given primary language.
662 
663   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
664   @param  Handle                The handle on which the strings reside.
665   @param  PrimaryLanguage       Pointer to a NULL-terminated string containing a single
666                                 ISO 639-2 language identifier, indicating the primary language.
667   @param  LanguageString        A string allocated by GetSecondaryLanguages()
668                                 containing a list of all secondary languages registered on the handle.
669 
670   @retval EFI_SUCCESS           LanguageString was correctly returned.
671   @retval EFI_INVALID_PARAMETER The Handle was unknown.
672 
673 **/
674 typedef
675 EFI_STATUS
676 (EFIAPI *EFI_HII_GET_SEC_LANGUAGES) (
677   IN  EFI_HII_PROTOCOL    *This,
678   IN  EFI_HII_HANDLE      Handle,
679   IN  CHAR16              *PrimaryLanguage,
680   OUT EFI_STRING          *LanguageString
681   );
682 
683 /**
684   Extracts a string from a package already registered with the EFI HII database.
685 
686   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
687   @param  Handle                The handle on which the string resides.
688   @param  Token                 The string token assigned to the string.
689   @param  Raw                   If TRUE, the string is returned unedited in the internal
690                                 storage format described above. If false, the string returned is edited
691                                 by replacing <cr> with <space> and by removing special characters such
692                                 as the <wide> prefix.
693   @param  LanguageString        Pointer to a NULL-terminated string containing a
694                                 single ISO 639-2 language identifier, indicating the language to print.
695                                 If the LanguageString is empty (starts with a NULL), the default system
696                                 language will be used to determine the language.
697   @param  BufferLength          Length of the StringBuffer.
698   @param  StringBuffer          The buffer designed to receive the characters in the string.
699 
700   @retval EFI_SUCCESS           StringBuffer is filled with a NULL-terminated string.
701   @retval EFI_INVALID_PARAMETER The handle or string token is unknown.
702   @retval EFI_BUFFER_TOO_SMALL  The buffer provided was not large enough to
703                                 allow the entire string to be stored.
704 
705 **/
706 typedef
707 EFI_STATUS
708 (EFIAPI *EFI_HII_GET_STRING) (
709   IN     EFI_HII_PROTOCOL  *This,
710   IN     EFI_HII_HANDLE    Handle,
711   IN     STRING_REF        Token,
712   IN     BOOLEAN           Raw,
713   IN     CHAR16            *LanguageString,
714   IN OUT UINTN             *BufferLength,
715   OUT    EFI_STRING        StringBuffer
716   );
717 
718 /**
719   Allows a program to extract a part of a string of not more than a given width.
720 
721   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
722   @param  Handle                The handle on which the string resides.
723   @param  Token                 The string token assigned to the string.
724   @param  Index                 On input, the offset into the string where the line is to start.
725                                 On output, the index is updated to point to beyond the last character returned
726                                 in the call.
727   @param  LineWidth             The maximum width of the line in units of narrow glyphs.
728   @param  LanguageString        Pointer to a NULL-terminated string containing a
729                                 single ISO 639-2 language identifier, indicating the language to print.
730   @param  BufferLength          Pointer to the length of the StringBuffer.
731   @param  StringBuffer          The buffer designed to receive the characters in the string.
732 
733   @retval EFI_SUCCESS           StringBuffer filled with characters that will fit on the line.
734   @retval EFI_NOT_FOUND         The font glyph for at least one of the characters in
735                                 the string is not in the font database.
736   @retval EFI_BUFFER_TOO_SMALL  The buffer provided was not large enough
737                                 to allow the entire string to be stored.
738 
739 **/
740 typedef
741 EFI_STATUS
742 (EFIAPI *EFI_HII_GET_LINE) (
743   IN     EFI_HII_PROTOCOL  *This,
744   IN     EFI_HII_HANDLE    Handle,
745   IN     STRING_REF        Token,
746   IN OUT UINT16            *Index,
747   IN     UINT16            LineWidth,
748   IN     CHAR16            *LanguageString,
749   IN OUT UINT16            *BufferLength,
750   OUT    EFI_STRING        StringBuffer
751   );
752 
753 /**
754   Allows a program to extract a form or form package that has previously
755   been registered with the HII database.
756 
757   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
758   @param  Handle                Handle on which the form resides.
759   @param  FormId                The ID of the form to return. If the ID is zero,
760                                 the entire form package is returned.
761   @param  BufferLength          On input, the length of the Buffer. On output,
762                                 the length of the returned buffer,
763   @param  Buffer                The buffer designed to receive the form(s).
764 
765   @retval EFI_SUCCESS           Buffer filled with the requested forms. BufferLength
766                                 was updated.
767   @retval EFI_INVALID_PARAMETER The handle is unknown.
768   @retval EFI_NOT_FOUND         A form on the requested handle cannot be found with
769                                 the requested FormId.
770   @retval EFI_BUFFER_TOO_SMALL  The buffer provided was not large enough
771                                 to allow the form to be stored.
772 
773 **/
774 typedef
775 EFI_STATUS
776 (EFIAPI *EFI_HII_GET_FORMS) (
777   IN     EFI_HII_PROTOCOL  *This,
778   IN     EFI_HII_HANDLE    Handle,
779   IN     EFI_FORM_ID       FormId,
780   IN OUT UINTN             *BufferLength,
781   OUT    UINT8             *Buffer
782   );
783 
784 /**
785   Extracts the defaults that are associated with a given handle in the HII database.
786 
787   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
788   @param  Handle                The HII handle from which will have default data retrieved.
789   @param  DefaultMask           The mask used to specify some type of default override when extracting
790                                 the default image data.
791   @param  VariablePackList      A indirect pointer to the first entry of a link list with
792                                 type EFI_HII_VARIABLE_PACK_LIST.
793 
794   @retval EFI_SUCCESS           The VariablePackList was populated with the appropriate
795                                 default setting data.
796   @retval EFI_NOT_FOUND         The IFR does not have any explicit or default map(s).
797   @retval EFI_INVALID_PARAMETER The HII database entry associated with Handle
798                                 contain invalid data.
799 
800 **/
801 typedef
802 EFI_STATUS
803 (EFIAPI *EFI_HII_GET_DEFAULT_IMAGE) (
804   IN     EFI_HII_PROTOCOL           *This,
805   IN     EFI_HII_HANDLE             Handle,
806   IN     UINTN                      DefaultMask,
807   OUT    EFI_HII_VARIABLE_PACK_LIST **VariablePackList
808   );
809 
810 /**
811   Allows the caller to update a form or form package that has previously been
812   registered with the EFI HII database.
813 
814   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
815   @param  Handle                Handle of the package where the form to be updated resides.
816   @param  Label                 The label inside the form package where the update is to take place.
817   @param  AddData               If TRUE, adding data at a given Label; otherwise,
818                                 if FALSE, removing data at a given Label.
819   @param  Data                  The buffer containing the new tags to insert after the Label
820 
821   @retval EFI_SUCCESS           The form was updated with the new tags.
822   @retval EFI_INVALID_PARAMETER The buffer for the buffer length does not
823                                 contain an integral number of tags.
824   @retval EFI_NOT_FOUND         The Handle, Label, or FormId was not found.
825 
826 **/
827 typedef
828 EFI_STATUS
829 (EFIAPI *EFI_HII_UPDATE_FORM) (
830   IN EFI_HII_PROTOCOL     *This,
831   IN EFI_HII_HANDLE       Handle,
832   IN EFI_FORM_LABEL       Label,
833   IN BOOLEAN              AddData,
834   IN EFI_HII_UPDATE_DATA  *Data
835   );
836 
837 /**
838   Retrieves the current keyboard layout.
839 
840   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
841   @param  DescriptorCount       A pointer to the number of Descriptor entries being
842                                 described in the keyboard layout being retrieved.
843   @param  Descriptor            A pointer to a buffer containing an array of EFI_KEY_DESCRIPTOR
844                                 entries. Each entry will reflect the definition of a specific physical key.
845 
846   @retval EFI_SUCCESS           The keyboard layout was retrieved successfully.
847 
848 **/
849 typedef
850 EFI_STATUS
851 (EFIAPI *EFI_HII_GET_KEYBOARD_LAYOUT) (
852   IN     EFI_HII_PROTOCOL    *This,
853   OUT    UINT16              *DescriptorCount,
854   OUT    EFI_KEY_DESCRIPTOR  *Descriptor
855   );
856 
857 /**
858   @par Protocol Description:
859   The HII Protocol manages the HII database, which is a repository for data
860   having to do with fonts, strings, forms, keyboards, and other future human
861   interface items.
862 
863   @param NewPack
864   Extracts the various packs from a package list.
865 
866   @param RemovePack
867   Removes a package from the HII database.
868 
869   @param FindHandles
870   Determines the handles that are currently active in the database.
871 
872   @param ExportDatabase
873   Export the entire contents of the database to a buffer.
874 
875   @param TestString
876   Tests if all of the characters in a string have corresponding font characters.
877 
878   @param GetGlyph
879   Translates a Unicode character into the corresponding font glyph.
880 
881   @param GlyphToBlt
882   Converts a glyph value into a format that is ready for a UGA BLT command.
883 
884   @param NewString
885   Allows a new string to be added to an already existing string package.
886 
887   @param GetPrimaryLanguages
888   Allows a program to determine the primary languages that are supported
889   on a given handle.
890 
891   @param GetSecondaryLanguages
892   Allows a program to determine which secondary languages are supported
893   on a given handle for a given primary language.
894 
895   @param GetString
896   Extracts a string from a package that is already registered with the
897   EFI HII database.
898 
899   @param ResetString
900   Remove any new strings that were added after the initial string export
901   for this handle.
902 
903   @param GetLine
904   Allows a program to extract a part of a string of not more than a given width.
905 
906   @param GetForms
907   Allows a program to extract a form or form package that has been previously registered.
908 
909   @param GetDefaultImage
910   Allows a program to extract the nonvolatile image that represents the default storage image.
911 
912   @param UpdateForm
913   Allows a program to update a previously registered form.
914 
915   @param GetKeyboardLayout
916   Allows a program to extract the current keyboard layout.
917 
918 **/
919 struct _EFI_HII_PROTOCOL {
920   EFI_HII_NEW_PACK            NewPack;
921   EFI_HII_REMOVE_PACK         RemovePack;
922   EFI_HII_FIND_HANDLES        FindHandles;
923   EFI_HII_EXPORT              ExportDatabase;
924 
925   EFI_HII_TEST_STRING         TestString;
926   EFI_HII_GET_GLYPH           GetGlyph;
927   EFI_HII_GLYPH_TO_BLT        GlyphToBlt;
928 
929   EFI_HII_NEW_STRING          NewString;
930   EFI_HII_GET_PRI_LANGUAGES   GetPrimaryLanguages;
931   EFI_HII_GET_SEC_LANGUAGES   GetSecondaryLanguages;
932   EFI_HII_GET_STRING          GetString;
933   EFI_HII_RESET_STRINGS       ResetStrings;
934   EFI_HII_GET_LINE            GetLine;
935   EFI_HII_GET_FORMS           GetForms;
936   EFI_HII_GET_DEFAULT_IMAGE   GetDefaultImage;
937   EFI_HII_UPDATE_FORM         UpdateForm;
938 
939   EFI_HII_GET_KEYBOARD_LAYOUT GetKeyboardLayout;
940 };
941 
942 extern EFI_GUID gEfiHiiProtocolGuid;
943 
944 #endif
945