vbetables-gen.c

   1 /* Generate the VGABIOS VBE Tables */
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4
   5 #define VBE_DISPI_TOTAL_VIDEO_MEMORY_MB 8
   6
   7 typedef struct {
   8     int width;
   9     int height;
  10     int depth;
  11     int mode;
  12 } ModeInfo;
  13
  14 ModeInfo modes[] = {
  15     /* standard VESA modes */
  16 { 640, 400, 8                          , 0x100},
  17 { 640, 480, 8                          , 0x101},
  18 { 800, 600, 4                          , 0x102},
  19 { 800, 600, 8                          , 0x103},
  20 { 1024, 768, 4                         , 0x104},
  21 { 1024, 768, 8                         , 0x105},
  22 { 1280, 1024, 4                        , 0x106},
  23 { 1280, 1024, 8                        , 0x107},
  24 { 320, 200, 15                       , 0x10D},
  25 { 320, 200, 16                        , 0x10E},
  26 { 320, 200, 24                        , 0x10F},
  27 { 640, 480, 15                       , 0x110},
  28 { 640, 480, 16                        , 0x111},
  29 { 640, 480, 24                        , 0x112},
  30 { 800, 600, 15                       , 0x113},
  31 { 800, 600, 16                        , 0x114},
  32 { 800, 600, 24                        , 0x115},
  33 { 1024, 768, 15                      , 0x116},
  34 { 1024, 768, 16                       , 0x117},
  35 { 1024, 768, 24                       , 0x118},
  36 { 1280, 1024, 15                     , 0x119},
  37 { 1280, 1024, 16                      , 0x11A},
  38 { 1280, 1024, 24                      , 0x11B},
  39 { 1600, 1200, 8                        , 0x11C},
  40 { 1600, 1200, 15                     , 0x11D},
  41 { 1600, 1200, 16                      , 0x11E},
  42 { 1600, 1200, 24                      , 0x11F},
  43
  44       /* BOCHS/PLE, 86 'own' mode numbers */
  45 { 320, 200, 32                        , 0x140},
  46 { 640, 400, 32                        , 0x141},
  47 { 640, 480, 32                        , 0x142},
  48 { 800, 600, 32                        , 0x143},
  49 { 1024, 768, 32                       , 0x144},
  50 { 1280, 1024, 32                      , 0x145},
  51 { 320, 200, 8                           , 0x146},
  52 { 1600, 1200, 32                      , 0x147},
  53 { 1152, 864, 8                      , 0x148},
  54 { 1152, 864, 15                      , 0x149},
  55 { 1152, 864, 16                      , 0x14a},
  56 { 1152, 864, 24                      , 0x14b},
  57 { 1152, 864, 32                      , 0x14c},
  58 { 0, },
  59 };
  60
  61 int main(int argc, char **argv)
  62 {
  63   const ModeInfo *pm;
  64   int pages, pitch;
  65   int r_size, r_pos, g_size, g_pos, b_size, b_pos, a_size, a_pos;
  66   const char *str;
  67   long vram_size = VBE_DISPI_TOTAL_VIDEO_MEMORY_MB * 1024 * 1024;
  68
  69   printf("/* THIS FILE IS AUTOMATICALLY GENERATED - DO NOT EDIT */\n\n");
  70   printf("#define VBE_DISPI_TOTAL_VIDEO_MEMORY_MB %d\n\n", VBE_DISPI_TOTAL_VIDEO_MEMORY_MB);
  71   printf("static ModeInfoListItem mode_info_list[]=\n");
  72   printf("{\n");
  73   for (pm = modes; pm->mode != 0; pm++) {
  74     if (pm->depth == 4)
  75       pitch = (pm->width + 7) / 8;
  76     else
  77       pitch = pm->width * ((pm->depth + 7) / 8);
  78     pages = vram_size / (pm->height * pitch);
  79     if (pages > 0) {
  80       printf("{ 0x%04x, /* %dx%dx%d */\n",
  81              pm->mode, pm->width, pm->height, pm->depth);
  82       if (pm->depth == 4)
  83         printf("{ /*Bit16u ModeAttributes*/ %s,\n",
  84                "VBE_MODE_ATTRIBUTE_SUPPORTED | "
  85                "VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE | "
  86                "VBE_MODE_ATTRIBUTE_COLOR_MODE | "
  87                "VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT | "
  88                "VBE_MODE_ATTRIBUTE_GRAPHICS_MODE");
  89       else
  90         printf("{ /*Bit16u ModeAttributes*/ %s,\n",
  91                "VBE_MODE_ATTRIBUTE_SUPPORTED | "
  92                "VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE | "
  93                "VBE_MODE_ATTRIBUTE_COLOR_MODE | "
  94                "VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE | "
  95                "VBE_MODE_ATTRIBUTE_GRAPHICS_MODE");
  96       printf("/*Bit8u  WinAAttributes*/ %s,\n",
  97              "VBE_WINDOW_ATTRIBUTE_RELOCATABLE | "
  98              "VBE_WINDOW_ATTRIBUTE_READABLE | "
  99              "VBE_WINDOW_ATTRIBUTE_WRITEABLE");
 100
 101       printf("/*Bit8u  WinBAttributes*/ %d,\n", 0);
 102
 103       printf("/*Bit16u WinGranularity*/ %s,\n", "VBE_DISPI_BANK_SIZE_KB");
 104
 105       printf("/*Bit16u WinSize*/ %s,\n", "VBE_DISPI_BANK_SIZE_KB");
 106
 107       printf("/*Bit16u WinASegment*/ %s,\n", "VGAMEM_GRAPH");
 108
 109       printf("/*Bit16u WinBSegment*/ 0x%04x,\n", 0);
 110
 111       printf("/*Bit32u WinFuncPtr*/ %d,\n", 0);
 112
 113       printf("/*Bit16u BytesPerScanLine*/ %d,\n", pitch);
 114
 115       // Mandatory information for VBE 1.2 and above
 116       printf("/*Bit16u XResolution*/ %d,\n", pm->width);
 117       printf("/*Bit16u YResolution*/ %d,\n", pm->height);
 118       printf("/*Bit8u  XCharSize*/ %d,\n", 8);
 119       printf("/*Bit8u  YCharSize*/ %d,\n", 16);
 120       if (pm->depth == 4) {
 121         printf("/*Bit8u  NumberOfPlanes*/ %d,\n", 4);
 122       } else {
 123         printf("/*Bit8u  NumberOfPlanes*/ %d,\n", 1);
 124       }
 125       printf("/*Bit8u  BitsPerPixel*/ %d,\n", pm->depth);
 126       printf("/*Bit8u  NumberOfBanks*/ %d,\n",
 127              (pm->height * pitch + 65535) / 65536);
 128
 129       if (pm->depth == 4)
 130         str = "VBE_MEMORYMODEL_PLANAR";
 131       else if (pm->depth == 8)
 132         str = "VBE_MEMORYMODEL_PACKED_PIXEL";
 133       else
 134         str = "VBE_MEMORYMODEL_DIRECT_COLOR";
 135       printf("/*Bit8u  MemoryModel*/ %s,\n", str);
 136       printf("/*Bit8u  BankSize*/ %d,\n", 0);
 137       if (pm->depth == 4)
 138         printf("/*Bit8u  NumberOfImagePages*/ %d,\n", (pages / 4) - 1);
 139       else
 140         printf("/*Bit8u  NumberOfImagePages*/ %d,\n", pages - 1);
 141       printf("/*Bit8u  Reserved_page*/ %d,\n", 0);
 142
 143       // Direct Color fields (required for direct/6 and YUV/7 memory models)
 144       switch(pm->depth) {
 145         case 15:
 146           r_size = 5;
 147           r_pos = 10;
 148           g_size = 5;
 149           g_pos = 5;
 150           b_size = 5;
 151           b_pos = 0;
 152           a_size = 1;
 153           a_pos = 15;
 154           break;
 155         case 16:
 156           r_size = 5;
 157           r_pos = 11;
 158           g_size = 6;
 159           g_pos = 5;
 160           b_size = 5;
 161           b_pos = 0;
 162           a_size = 0;
 163           a_pos = 0;
 164           break;
 165         case 24:
 166           r_size = 8;
 167           r_pos = 16;
 168           g_size = 8;
 169           g_pos = 8;
 170           b_size = 8;
 171           b_pos = 0;
 172           a_size = 0;
 173           a_pos = 0;
 174           break;
 175         case 32:
 176           r_size = 8;
 177           r_pos = 16;
 178           g_size = 8;
 179           g_pos = 8;
 180           b_size = 8;
 181           b_pos = 0;
 182           a_size = 8;
 183           a_pos = 24;
 184           break;
 185         default:
 186           r_size = 0;
 187           r_pos = 0;
 188           g_size = 0;
 189           g_pos = 0;
 190           b_size = 0;
 191           b_pos = 0;
 192           a_size = 0;
 193           a_pos = 0;
 194           break;
 195       }
 196
 197       printf("/*Bit8u  RedMaskSize*/ %d,\n", r_size);
 198       printf("/*Bit8u  RedFieldPosition*/ %d,\n", r_pos);
 199       printf("/*Bit8u  GreenMaskSize*/ %d,\n", g_size);
 200       printf("/*Bit8u  GreenFieldPosition*/ %d,\n", g_pos);
 201       printf("/*Bit8u  BlueMaskSize*/ %d,\n", b_size);
 202       printf("/*Bit8u  BlueFieldPosition*/ %d,\n", b_pos);
 203       printf("/*Bit8u  RsvdMaskSize*/ %d,\n", a_size);
 204       printf("/*Bit8u  RsvdFieldPosition*/ %d,\n", a_pos);
 205       if (pm->depth == 32)
 206         printf("/*Bit8u  DirectColorModeInfo*/ %s,\n",
 207                "VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE");
 208       else
 209         printf("/*Bit8u  DirectColorModeInfo*/ %s,\n", "0");
 210
 211 // Mandatory information for VBE 2.0 and above
 212       if (pm->depth > 4)
 213         printf("/*Bit32u PhysBasePtr*/ %s,\n",
 214                "VBE_DISPI_LFB_PHYSICAL_ADDRESS");
 215       else
 216         printf("/*Bit32u PhysBasePtr*/ %s,\n", "0");
 217       printf("/*Bit32u OffScreenMemOffset*/ %d,\n", 0);
 218       printf("/*Bit16u OffScreenMemSize*/ %d,\n", 0);
 219       // Mandatory information for VBE 3.0 and above
 220       printf("/*Bit16u LinBytesPerScanLine*/ %d,\n", pitch);
 221       printf("/*Bit8u  BnkNumberOfPages*/ %d,\n", 0);
 222       printf("/*Bit8u  LinNumberOfPages*/ %d,\n", 0);
 223       printf("/*Bit8u  LinRedMaskSize*/ %d,\n", r_size);
 224       printf("/*Bit8u  LinRedFieldPosition*/ %d,\n", r_pos);
 225       printf("/*Bit8u  LinGreenMaskSize*/ %d,\n", g_size);
 226       printf("/*Bit8u  LinGreenFieldPosition*/ %d,\n", g_pos);
 227       printf("/*Bit8u  LinBlueMaskSize*/ %d,\n", b_size);
 228       printf("/*Bit8u  LinBlueFieldPosition*/ %d,\n", b_pos);
 229       printf("/*Bit8u  LinRsvdMaskSize*/ %d,\n", a_size);
 230       printf("/*Bit8u  LinRsvdFieldPosition*/ %d,\n", a_pos);
 231       printf("/*Bit32u MaxPixelClock*/ %d,\n", 0);
 232       printf("} },\n");
 233     }
 234   }
 235   printf("{ VBE_VESA_MODE_END_OF_LIST,\n");
 236   printf("{ 0,\n");
 237   printf("} },\n");
 238   printf("};\n");
 239   return 0;
 240 }