MdePkg/Include/Protocol/Hii.h

   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   Copyright (c) 2006, Intel Corporation
   7   All rights reserved. This program and the accompanying materials
   8   are licensed and made available under the terms and conditions of the BSD License
   9   which accompanies this distribution.  The full text of the license may be found at
  10   http://opensource.org/licenses/bsd-license.php
  11
  12   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15   Module Name:  Hii.h
  16
  17   @par Revision Reference:
  18   This protocol is defined in HII spec 0.92.
  19
  20 **/
  21
  22 #ifndef __HII_H__
  23 #define __HII_H__
  24
  25
  26 #define EFI_HII_PROTOCOL_GUID \
  27   { \
  28     0xea816d2c, 0xcee5, 0x4f02, {0x99, 0xb5, 0xd3, 0x90, 0x5c, 0xbb, 0xd0, 0x77 } \
  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 //
  73 typedef UINT16  EFI_FORM_ID;
  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 #pragma pack()
 411
 412 /**
 413   Registers the various packs that are passed in via the Packages parameter.
 414
 415   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 416   @param  Packages              A pointer to an EFI_HII_PACKAGES package instance.
 417   @param  Handle                A pointer to the EFI_HII_HANDLE instance.
 418
 419   @retval EFI_SUCCESS           Data was extracted from Packages, the database
 420                                 was updated with the data, and Handle returned successfully.
 421   @retval EFI_INVALID_PARAMETER The content of Packages was invalid.
 422
 423 **/
 424 typedef
 425 EFI_STATUS
 426 (EFIAPI *EFI_HII_NEW_PACK) (
 427   IN  EFI_HII_PROTOCOL    *This,
 428   IN  EFI_HII_PACKAGES    *Packages,
 429   OUT EFI_HII_HANDLE      *Handle
 430   );
 431
 432 /**
 433   Removes a package from the HII database.
 434
 435   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 436   @param  Handle                The handle that was registered to the data that is requested
 437                                 for removal.
 438
 439   @retval EFI_SUCCESS           The data associated with the Handle was removed
 440                                 from the HII database.
 441   @retval EFI_INVALID_PARAMETER The Handle was not valid.
 442
 443 **/
 444 typedef
 445 EFI_STATUS
 446 (EFIAPI *EFI_HII_REMOVE_PACK) (
 447   IN EFI_HII_PROTOCOL    *This,
 448   IN EFI_HII_HANDLE      Handle
 449   );
 450
 451 /**
 452   Determines the handles that are currently active in the database.
 453
 454   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 455   @param  HandleBufferLength    On input, a pointer to the length of the handle
 456                                 buffer. On output, the length of the handle buffer that is required
 457                                 for the handles found.
 458   @param  Handle                An array of EFI_HII_HANDLE instances returned.
 459
 460   @retval EFI_SUCCESS           Handle was updated successfully.
 461   @retval EFI_BUFFER_TOO_SMALL  The HandleBufferLength parameter indicates
 462                                 that Handle is too small to support the number of handles.
 463
 464 **/
 465 typedef
 466 EFI_STATUS
 467 (EFIAPI *EFI_HII_FIND_HANDLES) (
 468   IN     EFI_HII_PROTOCOL *This,
 469   IN OUT UINT16           *HandleBufferLength,
 470   OUT    EFI_HII_HANDLE   *Handle
 471   );
 472
 473 /**
 474   Exports the contents of the database into a buffer.
 475
 476   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 477   @param  Handle                An EFI_HII_HANDLE that corresponds to the desired
 478                                 handle to export. If the value is 0, the entire database will be exported.
 479                                 In either case, the data will be exported in a format described by the
 480                                 structure definition of EFI_HII_EXPORT_TABLE.
 481   @param  BufferSize
 482   On input, a pointer to the length of the buffer. On output, the length
 483   of the buffer that is required for the export data.
 484   @param  Buffer                A pointer to a buffer that will contain the results of the export function.
 485
 486   @retval EFI_SUCCESS           The buffer was successfully filled with BufferSize amount of data.
 487   @retval EFI_BUFFER_TOO_SMALL  The value in BufferSize was too small to contain the export data.
 488
 489 **/
 490 typedef
 491 EFI_STATUS
 492 (EFIAPI *EFI_HII_EXPORT) (
 493   IN     EFI_HII_PROTOCOL *This,
 494   IN     EFI_HII_HANDLE   Handle,
 495   IN OUT UINTN            *BufferSize,
 496   OUT    VOID             *Buffer
 497   );
 498
 499 /**
 500   Remove any new strings that were added after the initial string export
 501   for this handle.
 502
 503   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 504   @param  Handle                The handle on which the string resides.
 505
 506   @retval EFI_SUCCESS           Remove strings from the handle successfully.
 507   @retval EFI_INVALID_PARAMETER The Handle was unknown.
 508
 509 **/
 510 typedef
 511 EFI_STATUS
 512 (EFIAPI *EFI_HII_RESET_STRINGS) (
 513   IN     EFI_HII_PROTOCOL   *This,
 514   IN     EFI_HII_HANDLE     Handle
 515   );
 516
 517 /**
 518   Tests if all of the characters in a string have corresponding font characters.
 519
 520   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 521   @param  StringToTest          A pointer to a Unicode string.
 522   @param  FirstMissing          A pointer to an index into the string. On input,
 523                                 the index of the first character in the StringToTest to examine. On exit,
 524                                 the index of the first character encountered for which a glyph is unavailable.
 525                                 If all glyphs in the string are available, the index is the index of the
 526                                 terminator of the string.
 527   @param  GlyphBufferSize       A pointer to a value. On output, if the function
 528                                 returns EFI_SUCCESS, it contains the amount of memory that is required to
 529                                 store the string's glyph equivalent.
 530
 531   @retval EFI_SUCCESS           All glyphs are available. Note that an empty string
 532                                 always returns this value.
 533   @retval EFI_NOT_FOUND         A glyph was not found for a character.
 534
 535 **/
 536 typedef
 537 EFI_STATUS
 538 (EFIAPI *EFI_HII_TEST_STRING) (
 539   IN     EFI_HII_PROTOCOL  *This,
 540   IN     CHAR16            *StringToTest,
 541   IN OUT UINT32            *FirstMissing,
 542   OUT    UINT32            *GlyphBufferSize
 543   );
 544
 545 /**
 546   Translates a Unicode character into the corresponding font glyph.
 547
 548   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 549   @param  Source                A pointer to a Unicode string.
 550   @param  Index                 On input, the offset into the string from which to fetch
 551                                 the character.On successful completion, the index is updated to the first
 552                                 character past the character(s) making up the just extracted glyph.
 553   @param  GlyphBuffer           Pointer to an array where the glyphs corresponding
 554                                 to the characters in the source may be stored. GlyphBuffer is assumed
 555                                 to be wide enough to accept a wide glyph character.
 556   @param  BitWidth              If EFI_SUCCESS was returned, the UINT16 pointed to by
 557                                 this value is filled with the length of the glyph in pixels. It is unchanged
 558                                 if the call was unsuccessful.
 559   @param  InternalStatus        The cell pointed to by this parameter must be
 560                                 initialized to zero prior to invoking the call the first time for any string.
 561
 562   @retval EFI_SUCCESS           It worked.
 563   @retval EFI_NOT_FOUND         A glyph for a character was not found.
 564
 565 **/
 566 typedef
 567 EFI_STATUS
 568 (EFIAPI *EFI_HII_GET_GLYPH) (
 569   IN     EFI_HII_PROTOCOL  *This,
 570   IN     CHAR16            *Source,
 571   IN OUT UINT16            *Index,
 572   OUT    UINT8             **GlyphBuffer,
 573   OUT    UINT16            *BitWidth,
 574   IN OUT UINT32            *InternalStatus
 575   );
 576
 577 /**
 578   Translates a glyph into the format required for input to the Universal
 579   Graphics Adapter (UGA) Block Transfer (BLT) routines.
 580
 581   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 582   @param  GlyphBuffer           A pointer to the buffer that contains glyph data.
 583   @param  Foreground            The foreground setting requested to be used for the
 584                                 generated BltBuffer data.
 585   @param  Background            The background setting requested to be used for the
 586                                 generated BltBuffer data.
 587   @param  Count                 The entry in the BltBuffer upon which to act.
 588   @param  Width                 The width in bits of the glyph being converted.
 589   @param  Height                The height in bits of the glyph being converted
 590   @param  BltBuffer             A pointer to the buffer that contains the data that is
 591                                 ready to be used by the UGA BLT routines.
 592
 593   @retval EFI_SUCCESS           It worked.
 594   @retval EFI_NOT_FOUND         A glyph for a character was not found.
 595
 596 **/
 597 typedef
 598 EFI_STATUS
 599 (EFIAPI *EFI_HII_GLYPH_TO_BLT) (
 600   IN     EFI_HII_PROTOCOL   *This,
 601   IN     UINT8              *GlyphBuffer,
 602   IN     EFI_UGA_PIXEL      Foreground,
 603   IN     EFI_UGA_PIXEL      Background,
 604   IN     UINTN              Count,
 605   IN     UINTN              Width,
 606   IN     UINTN              Height,
 607   IN OUT EFI_UGA_PIXEL      *BltBuffer
 608   );
 609
 610 /**
 611   Allows a new string to be added to an already existing string package.
 612
 613   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 614   @param  Pointer               to a NULL-terminated string containing a single ISO 639-2
 615                                 language identifier, indicating the language in which the string is translated.
 616   @param  Handle                The handle of the language pack to which the string is to be added.
 617   @param  Reference             The identifier of the string to be added. If the reference
 618                                 value is zero, then the string will be assigned a new identifier on that
 619                                 handle for the language specified. Otherwise, the string will be updated
 620                                 with the NewString Value.
 621   @param  NewString             The string to be added.
 622
 623   @retval EFI_SUCCESS           The string was effectively registered.
 624   @retval EFI_INVALID_PARAMETER The Handle was unknown.
 625
 626 **/
 627 typedef
 628 EFI_STATUS
 629 (EFIAPI *EFI_HII_NEW_STRING) (
 630   IN     EFI_HII_PROTOCOL      *This,
 631   IN     CHAR16                *Language,
 632   IN     EFI_HII_HANDLE        Handle,
 633   IN OUT STRING_REF            *Reference,
 634   IN     CHAR16                *NewString
 635   );
 636
 637 /**
 638   Allows a program to determine the primary languages that are supported
 639   on a given handle.
 640
 641   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 642   @param  Handle                The handle on which the strings reside.
 643   @param  LanguageString        A string allocated by GetPrimaryLanguages() that
 644                                 contains a list of all primary languages registered on the handle.
 645
 646   @retval EFI_SUCCESS           LanguageString was correctly returned.
 647   @retval EFI_INVALID_PARAMETER The Handle was unknown.
 648
 649 **/
 650 typedef
 651 EFI_STATUS
 652 (EFIAPI *EFI_HII_GET_PRI_LANGUAGES) (
 653   IN  EFI_HII_PROTOCOL    *This,
 654   IN  EFI_HII_HANDLE      Handle,
 655   OUT EFI_STRING          *LanguageString
 656   );
 657
 658 /**
 659   Allows a program to determine which secondary languages are supported
 660   on a given handle for a given primary language.
 661
 662   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 663   @param  Handle                The handle on which the strings reside.
 664   @param  PrimaryLanguage       Pointer to a NULL-terminated string containing a single
 665                                 ISO 639-2 language identifier, indicating the primary language.
 666   @param  LanguageString        A string allocated by GetSecondaryLanguages()
 667                                 containing a list of all secondary languages registered on the handle.
 668
 669   @retval EFI_SUCCESS           LanguageString was correctly returned.
 670   @retval EFI_INVALID_PARAMETER The Handle was unknown.
 671
 672 **/
 673 typedef
 674 EFI_STATUS
 675 (EFIAPI *EFI_HII_GET_SEC_LANGUAGES) (
 676   IN  EFI_HII_PROTOCOL    *This,
 677   IN  EFI_HII_HANDLE      Handle,
 678   IN  CHAR16              *PrimaryLanguage,
 679   OUT EFI_STRING          *LanguageString
 680   );
 681
 682 /**
 683   Extracts a string from a package already registered with the EFI HII database.
 684
 685   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 686   @param  Handle                The handle on which the string resides.
 687   @param  Token                 The string token assigned to the string.
 688   @param  Raw                   If TRUE, the string is returned unedited in the internal
 689                                 storage format described above. If false, the string returned is edited
 690                                 by replacing <cr> with <space> and by removing special characters such
 691                                 as the <wide> prefix.
 692   @param  LanguageString        Pointer to a NULL-terminated string containing a
 693                                 single ISO 639-2 language identifier, indicating the language to print.
 694                                 If the LanguageString is empty (starts with a NULL), the default system
 695                                 language will be used to determine the language.
 696   @param  BufferLength          Length of the StringBuffer.
 697   @param  StringBuffer          The buffer designed to receive the characters in the string.
 698
 699   @retval EFI_SUCCESS           StringBuffer is filled with a NULL-terminated string.
 700   @retval EFI_INVALID_PARAMETER The handle or string token is unknown.
 701   @retval EFI_BUFFER_TOO_SMALL  The buffer provided was not large enough to
 702                                 allow the entire string to be stored.
 703
 704 **/
 705 typedef
 706 EFI_STATUS
 707 (EFIAPI *EFI_HII_GET_STRING) (
 708   IN     EFI_HII_PROTOCOL  *This,
 709   IN     EFI_HII_HANDLE    Handle,
 710   IN     STRING_REF        Token,
 711   IN     BOOLEAN           Raw,
 712   IN     CHAR16            *LanguageString,
 713   IN OUT UINTN             *BufferLength,
 714   OUT    EFI_STRING        StringBuffer
 715   );
 716
 717 /**
 718   Allows a program to extract a part of a string of not more than a given width.
 719
 720   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 721   @param  Handle                The handle on which the string resides.
 722   @param  Token                 The string token assigned to the string.
 723   @param  Index                 On input, the offset into the string where the line is to start.
 724                                 On output, the index is updated to point to beyond the last character returned
 725                                 in the call.
 726   @param  LineWidth             The maximum width of the line in units of narrow glyphs.
 727   @param  LanguageString        Pointer to a NULL-terminated string containing a
 728                                 single ISO 639-2 language identifier, indicating the language to print.
 729   @param  BufferLength          Pointer to the length of the StringBuffer.
 730   @param  StringBuffer          The buffer designed to receive the characters in the string.
 731
 732   @retval EFI_SUCCESS           StringBuffer filled with characters that will fit on the line.
 733   @retval EFI_NOT_FOUND         The font glyph for at least one of the characters in
 734                                 the string is not in the font database.
 735   @retval EFI_BUFFER_TOO_SMALL  The buffer provided was not large enough
 736                                 to allow the entire string to be stored.
 737
 738 **/
 739 typedef
 740 EFI_STATUS
 741 (EFIAPI *EFI_HII_GET_LINE) (
 742   IN     EFI_HII_PROTOCOL  *This,
 743   IN     EFI_HII_HANDLE    Handle,
 744   IN     STRING_REF        Token,
 745   IN OUT UINT16            *Index,
 746   IN     UINT16            LineWidth,
 747   IN     CHAR16            *LanguageString,
 748   IN OUT UINT16            *BufferLength,
 749   OUT    EFI_STRING        StringBuffer
 750   );
 751
 752 /**
 753   Allows a program to extract a form or form package that has previously
 754   been registered with the HII database.
 755
 756   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 757   @param  Handle                Handle on which the form resides.
 758   @param  FormId                The ID of the form to return. If the ID is zero,
 759                                 the entire form package is returned.
 760   @param  BufferLength          On input, the length of the Buffer. On output,
 761                                 the length of the returned buffer,
 762   @param  Buffer                The buffer designed to receive the form(s).
 763
 764   @retval EFI_SUCCESS           Buffer filled with the requested forms. BufferLength
 765                                 was updated.
 766   @retval EFI_INVALID_PARAMETER The handle is unknown.
 767   @retval EFI_NOT_FOUND         A form on the requested handle cannot be found with
 768                                 the requested FormId.
 769   @retval EFI_BUFFER_TOO_SMALL  The buffer provided was not large enough
 770                                 to allow the form to be stored.
 771
 772 **/
 773 typedef
 774 EFI_STATUS
 775 (EFIAPI *EFI_HII_GET_FORMS) (
 776   IN     EFI_HII_PROTOCOL  *This,
 777   IN     EFI_HII_HANDLE    Handle,
 778   IN     EFI_FORM_ID       FormId,
 779   IN OUT UINTN             *BufferLength,
 780   OUT    UINT8             *Buffer
 781   );
 782
 783 /**
 784   Extracts the defaults that are associated with a given handle in the HII database.
 785
 786   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 787   @param  Handle                The HII handle from which will have default data retrieved.
 788   @param  DefaultMask           The mask used to specify some type of default override when extracting
 789                                 the default image data.
 790   @param  VariablePackList      A indirect pointer to the first entry of a link list with
 791                                 type EFI_HII_VARIABLE_PACK_LIST.
 792
 793   @retval EFI_SUCCESS           The VariablePackList was populated with the appropriate
 794                                 default setting data.
 795   @retval EFI_NOT_FOUND         The IFR does not have any explicit or default map(s).
 796   @retval EFI_INVALID_PARAMETER The HII database entry associated with Handle
 797                                 contain invalid data.
 798
 799 **/
 800 typedef
 801 EFI_STATUS
 802 (EFIAPI *EFI_HII_GET_DEFAULT_IMAGE) (
 803   IN     EFI_HII_PROTOCOL           *This,
 804   IN     EFI_HII_HANDLE             Handle,
 805   IN     UINTN                      DefaultMask,
 806   OUT    EFI_HII_VARIABLE_PACK_LIST **VariablePackList
 807   );
 808
 809 /**
 810   Allows the caller to update a form or form package that has previously been
 811   registered with the EFI HII database.
 812
 813   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 814   @param  Handle                Handle of the package where the form to be updated resides.
 815   @param  Label                 The label inside the form package where the update is to take place.
 816   @param  AddData               If TRUE, adding data at a given Label; otherwise,
 817                                 if FALSE, removing data at a given Label.
 818   @param  Data                  The buffer containing the new tags to insert after the Label
 819
 820   @retval EFI_SUCCESS           The form was updated with the new tags.
 821   @retval EFI_INVALID_PARAMETER The buffer for the buffer length does not
 822                                 contain an integral number of tags.
 823   @retval EFI_NOT_FOUND         The Handle, Label, or FormId was not found.
 824
 825 **/
 826 typedef
 827 EFI_STATUS
 828 (EFIAPI *EFI_HII_UPDATE_FORM) (
 829   IN EFI_HII_PROTOCOL     *This,
 830   IN EFI_HII_HANDLE       Handle,
 831   IN EFI_FORM_LABEL       Label,
 832   IN BOOLEAN              AddData,
 833   IN EFI_HII_UPDATE_DATA  *Data
 834   );
 835
 836 /**
 837   Retrieves the current keyboard layout.
 838
 839   @param  This                  A pointer to the EFI_HII_PROTOCOL instance.
 840   @param  DescriptorCount       A pointer to the number of Descriptor entries being
 841                                 described in the keyboard layout being retrieved.
 842   @param  Descriptor            A pointer to a buffer containing an array of EFI_KEY_DESCRIPTOR
 843                                 entries. Each entry will reflect the definition of a specific physical key.
 844
 845   @retval EFI_SUCCESS           The keyboard layout was retrieved successfully.
 846
 847 **/
 848 typedef
 849 EFI_STATUS
 850 (EFIAPI *EFI_HII_GET_KEYBOARD_LAYOUT) (
 851   IN     EFI_HII_PROTOCOL    *This,
 852   OUT    UINT16              *DescriptorCount,
 853   OUT    EFI_KEY_DESCRIPTOR  *Descriptor
 854   );
 855
 856 /**
 857   @par Protocol Description:
 858   The HII Protocol manages the HII database, which is a repository for data
 859   having to do with fonts, strings, forms, keyboards, and other future human
 860   interface items.
 861
 862   @param NewPack
 863   Extracts the various packs from a package list.
 864
 865   @param RemovePack
 866   Removes a package from the HII database.
 867
 868   @param FindHandles
 869   Determines the handles that are currently active in the database.
 870
 871   @param ExportDatabase
 872   Export the entire contents of the database to a buffer.
 873
 874   @param TestString
 875   Tests if all of the characters in a string have corresponding font characters.
 876
 877   @param GetGlyph
 878   Translates a Unicode character into the corresponding font glyph.
 879
 880   @param GlyphToBlt
 881   Converts a glyph value into a format that is ready for a UGA BLT command.
 882
 883   @param NewString
 884   Allows a new string to be added to an already existing string package.
 885
 886   @param GetPrimaryLanguages
 887   Allows a program to determine the primary languages that are supported
 888   on a given handle.
 889
 890   @param GetSecondaryLanguages
 891   Allows a program to determine which secondary languages are supported
 892   on a given handle for a given primary language.
 893
 894   @param GetString
 895   Extracts a string from a package that is already registered with the
 896   EFI HII database.
 897
 898   @param ResetString
 899   Remove any new strings that were added after the initial string export
 900   for this handle.
 901
 902   @param GetLine
 903   Allows a program to extract a part of a string of not more than a given width.
 904
 905   @param GetForms
 906   Allows a program to extract a form or form package that has been previously registered.
 907
 908   @param GetDefaultImage
 909   Allows a program to extract the nonvolatile image that represents the default storage image.
 910
 911   @param UpdateForm
 912   Allows a program to update a previously registered form.
 913
 914   @param GetKeyboardLayout
 915   Allows a program to extract the current keyboard layout.
 916
 917 **/
 918 struct _EFI_HII_PROTOCOL {
 919   EFI_HII_NEW_PACK            NewPack;
 920   EFI_HII_REMOVE_PACK         RemovePack;
 921   EFI_HII_FIND_HANDLES        FindHandles;
 922   EFI_HII_EXPORT              ExportDatabase;
 923
 924   EFI_HII_TEST_STRING         TestString;
 925   EFI_HII_GET_GLYPH           GetGlyph;
 926   EFI_HII_GLYPH_TO_BLT        GlyphToBlt;
 927
 928   EFI_HII_NEW_STRING          NewString;
 929   EFI_HII_GET_PRI_LANGUAGES   GetPrimaryLanguages;
 930   EFI_HII_GET_SEC_LANGUAGES   GetSecondaryLanguages;
 931   EFI_HII_GET_STRING          GetString;
 932   EFI_HII_RESET_STRINGS       ResetStrings;
 933   EFI_HII_GET_LINE            GetLine;
 934   EFI_HII_GET_FORMS           GetForms;
 935   EFI_HII_GET_DEFAULT_IMAGE   GetDefaultImage;
 936   EFI_HII_UPDATE_FORM         UpdateForm;
 937
 938   EFI_HII_GET_KEYBOARD_LAYOUT GetKeyboardLayout;
 939 };
 940
 941 extern EFI_GUID gEfiHiiProtocolGuid;
 942
 943 #endif