OvmfPkg/Include/IndustryStandard/LegacyVgaBios.h

   1 /** @file
   2   Type definitions related to the VBE (VESA BIOS Extension, Int10h AH=4Fh)
   3   services GET INFORMATION (AL=00h) and GET MODE INFORMATION (AL=01h).
   4
   5   For reference, see Ralf Brown's Interrupt List:
   6   <http://www.cs.cmu.edu/~ralf/files.html>
   7   <http://www.ctyme.com/rbrown.htm>
   8
   9   Copyright (C) 2014, Red Hat, Inc.
  10
  11   SPDX-License-Identifier: BSD-2-Clause-Patent
  12 **/
  13
  14 #ifndef __LEGACY_VGA_BIOS_H__
  15 #define __LEGACY_VGA_BIOS_H__
  16
  17 #include <Base.h>
  18
  19 #pragma pack (1)
  20 typedef struct {
  21   UINT8     Signature[4];
  22   UINT16    VesaVersion;
  23   UINT32    OemNameAddress;
  24   UINT32    Capabilities;
  25   UINT32    ModeListAddress;
  26   UINT16    VideoMem64K;
  27   UINT16    OemSoftwareVersion;
  28   UINT32    VendorNameAddress;
  29   UINT32    ProductNameAddress;
  30   UINT32    ProductRevAddress;
  31 } VBE_INFO_BASE;
  32
  33 typedef struct {
  34   VBE_INFO_BASE    Base;
  35   UINT8            Buffer[256 - sizeof (VBE_INFO_BASE)];
  36 } VBE_INFO;
  37
  38 typedef struct {
  39   UINT16    ModeAttr;
  40   UINT8     WindowAAttr;
  41   UINT8     WindowBAttr;
  42   UINT16    WindowGranularityKB;
  43   UINT16    WindowSizeKB;
  44   UINT16    WindowAStartSegment;
  45   UINT16    WindowBStartSegment;
  46   UINT32    WindowPositioningAddress;
  47   UINT16    BytesPerScanLine;
  48
  49   UINT16    Width;
  50   UINT16    Height;
  51   UINT8     CharCellWidth;
  52   UINT8     CharCellHeight;
  53   UINT8     NumPlanes;
  54   UINT8     BitsPerPixel;
  55   UINT8     NumBanks;
  56   UINT8     MemoryModel;
  57   UINT8     BankSizeKB;
  58   UINT8     NumImagePagesLessOne;
  59   UINT8     Vbe3;
  60
  61   UINT8     RedMaskSize;
  62   UINT8     RedMaskPos;
  63   UINT8     GreenMaskSize;
  64   UINT8     GreenMaskPos;
  65   UINT8     BlueMaskSize;
  66   UINT8     BlueMaskPos;
  67   UINT8     ReservedMaskSize;
  68   UINT8     ReservedMaskPos;
  69   UINT8     DirectColorModeInfo;
  70
  71   UINT32    LfbAddress;
  72   UINT32    OffScreenAddress;
  73   UINT16    OffScreenSizeKB;
  74
  75   UINT16    BytesPerScanLineLinear;
  76   UINT8     NumImagesLessOneBanked;
  77   UINT8     NumImagesLessOneLinear;
  78   UINT8     RedMaskSizeLinear;
  79   UINT8     RedMaskPosLinear;
  80   UINT8     GreenMaskSizeLinear;
  81   UINT8     GreenMaskPosLinear;
  82   UINT8     BlueMaskSizeLinear;
  83   UINT8     BlueMaskPosLinear;
  84   UINT8     ReservedMaskSizeLinear;
  85   UINT8     ReservedMaskPosLinear;
  86   UINT32    MaxPixelClockHz;
  87   UINT8     Reserved[190];
  88 } VBE_MODE_INFO;
  89
  90 typedef struct {
  91   UINT16    ModeAttr;
  92   UINT8     WindowAAttr;
  93   UINT8     WindowBAttr;
  94   UINT16    WindowGranularityKB;
  95   UINT16    WindowSizeKB;
  96   UINT16    WindowAStartSegment;
  97   UINT16    WindowBStartSegment;
  98   UINT32    WindowPositioningAddress;
  99   UINT16    BytesPerScanLine;
 100
 101   UINT16    Width;
 102   UINT16    Height;
 103   UINT8     CharCellWidth;
 104   UINT8     CharCellHeight;
 105   UINT8     NumPlanes;
 106   UINT8     BitsPerPixel;
 107   UINT8     NumBanks;
 108   UINT8     MemoryModel;
 109   UINT8     BankSizeKB;
 110   UINT8     NumImagePagesLessOne;
 111   UINT8     Vbe3;
 112
 113   UINT8     RedMaskSize;
 114   UINT8     RedMaskPos;
 115   UINT8     GreenMaskSize;
 116   UINT8     GreenMaskPos;
 117   UINT8     BlueMaskSize;
 118   UINT8     BlueMaskPos;
 119   UINT8     ReservedMaskSize;
 120   UINT8     ReservedMaskPos;
 121   UINT8     DirectColorModeInfo;
 122
 123   UINT32    LfbAddress;
 124   UINT32    OffScreenAddress;
 125   UINT16    OffScreenSizeKB;
 126 } VBE2_MODE_INFO;
 127 #pragma pack ()
 128
 129 #endif