1 | //====================================================================== |
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2 | // |
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3 | // Project: XTIDE Universal BIOS, Serial Port Server |
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4 | // |
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5 | // File: image.cpp - Abstract base class for disk image support |
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6 | // |
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7 | |
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8 | #include "library.h" |
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9 | #include <memory.h> |
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10 | #include <stdlib.h> |
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11 | #include <string.h> |
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12 | #include <stdio.h> |
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13 | |
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14 | struct floppyInfo floppyInfos[] = |
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15 | { |
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16 | { 1, 2949120 / 512, 6, 80, 2, 36 }, // 2.88MB 3.5" |
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17 | { 0, 2867200 / 512, 6, 80, 2, 36 }, // 2.88MB 3.5" (alternate spelling with 2.8) |
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18 | { 0, 2969600 / 512, 6, 80, 2, 36 }, // 2.88MB 3.5" (alternate spelling with 2.9) |
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19 | { 1, 1474560 / 512, 4, 80, 2, 18 }, // 1.44MB 3.5" |
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20 | { 0, 1433600 / 512, 4, 80, 2, 18 }, // 1.44MB 3.5" (alternate spelling with 1.4) |
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21 | { 1, 1228800 / 512, 2, 80, 2, 15 }, // 1.2MB 5.25" |
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22 | { 1, 737280 / 512, 3, 80, 1, 18 }, // 720KB 3.5" |
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23 | { 1, 368640 / 512, 1, 40, 2, 9 }, // 360KB 5.25" |
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24 | { 1, 327680 / 512, 0, 40, 2, 8 }, // 320KB 5.25" |
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25 | { 1, 184320 / 512, 0, 40, 1, 9 }, // 180KB 5.25" single sided |
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26 | { 1, 163840 / 512, 0, 40, 1, 8 }, // 160KB 5.25" single sided |
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27 | { 0, 0, 0, 0, 0, 0 } |
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28 | }; |
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29 | |
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30 | struct floppyInfo *FindFloppyInfoBySize( double size ) |
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31 | { |
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32 | struct floppyInfo *fi; |
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33 | |
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34 | for( fi = floppyInfos; fi->size != 0 && !(size+5 > fi->size && size-5 < fi->size); fi++ ) ; |
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35 | |
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36 | if( fi->size == 0 ) |
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37 | fi = NULL; |
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38 | |
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39 | return( fi ); |
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40 | } |
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41 | |
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42 | Image::Image( char *name, int p_readOnly, int p_drive ) |
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43 | { |
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44 | } |
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45 | |
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46 | Image::Image( char *name, int p_readOnly, int p_drive, int p_create, unsigned long p_lba ) |
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47 | { |
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48 | } |
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49 | |
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50 | Image::Image( char *name, int p_readOnly, int p_drive, int p_create, unsigned long p_cyl, unsigned long p_head, unsigned long p_sect, int p_useCHS ) |
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51 | { |
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52 | } |
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53 | |
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54 | void Image::init( char *name, int p_readOnly, int p_drive, unsigned long p_cyl, unsigned long p_head, unsigned long p_sect, int p_useCHS ) |
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55 | { |
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56 | double sizef; |
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57 | char sizeChar; |
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58 | struct floppyInfo *f; |
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59 | |
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60 | for( char *c = shortFileName = name; *c; c++ ) |
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61 | if( *c == '\\' || *c == '/' || *c == ':' ) |
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62 | shortFileName = c+1; |
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63 | |
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64 | if( *(shortFileName) == 0 ) |
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65 | { |
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66 | log( 1, "Can't parse '%s' for short file name\n\n", name ); |
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67 | shortFileName = "SerDrive"; |
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68 | } |
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69 | |
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70 | readOnly = p_readOnly; |
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71 | drive = p_drive; |
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72 | |
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73 | if( totallba > 0xfffffff ) // lba28 limit - 28 bits |
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74 | log( -1, "'%s', Image size larger than LBA28 maximum of 137,438,952,960 bytes, %lu", name, totallba ); |
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75 | |
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76 | if( totallba == 0 ) |
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77 | log( -1, "'%s', Image size zero?" ); |
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78 | |
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79 | floppy = 0; |
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80 | for( f = floppyInfos; f->size && !(f->size == totallba && f->real); f++ ) ; |
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81 | if( f->size ) |
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82 | { |
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83 | floppy = 1; |
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84 | floppyType = f->type; |
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85 | p_useCHS = 1; |
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86 | p_cyl = f->cylinders; |
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87 | p_head = f->heads; |
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88 | p_sect = f->sectors; |
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89 | totallba = p_cyl * p_head * p_sect; |
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90 | } |
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91 | |
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92 | if( p_useCHS ) |
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93 | { |
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94 | if( p_cyl ) |
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95 | { |
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96 | if( p_sect > 63 || (p_head > 16 || p_head < 1) || (p_cyl > 1024 || p_cyl < 1) ) |
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97 | log( -1, "'%s', parts of the CHS geometry (%lu:%lu:%lu) are out of the range (1-1024:1-16:1-63)", name, p_cyl, p_head, p_sect ); |
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98 | else if( totallba != (p_sect * p_head * p_cyl) ) |
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99 | log( -1, "'%s', file size does not match geometry", name ); |
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100 | sect = p_sect; |
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101 | head = p_head; |
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102 | cyl = p_cyl; |
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103 | } |
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104 | else |
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105 | { |
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106 | if( (totallba % 16) != 0 || ((totallba/16) % 63) != 0 ) |
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107 | log( -1, "'%s', file size does not match standard CHS geometry (x:16:63), please specify geometry explicitly with -g", name ); |
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108 | else |
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109 | { |
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110 | sect = 63; |
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111 | head = 16; |
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112 | cyl = (totallba / sect / head); |
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113 | if( cyl > 1024 ) |
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114 | log( -1, "'%s', CHS geometry of %lu:%lu:%lu is larger than maximum values 1024:16:63", name, cyl, head, sect ); |
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115 | } |
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116 | } |
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117 | } |
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118 | else |
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119 | { |
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120 | sect = 0; |
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121 | head = 0; |
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122 | cyl = 0; |
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123 | } |
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124 | useCHS = p_useCHS; |
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125 | |
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126 | sizef = totallba/2048.0; |
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127 | sizeChar = 'M'; |
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128 | if( sizef < 1 ) |
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129 | { |
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130 | sizef *= 1024; |
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131 | sizeChar = 'K'; |
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132 | } |
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133 | if( useCHS ) |
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134 | log( 0, "%s: %s with CHS geometry %u:%u:%u, size %.2lf %cB", |
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135 | name, (floppy ? "Floppy Disk" : "Hard Disk"), cyl, head, sect, sizef, sizeChar ); |
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136 | else |
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137 | log( 0, "%s: %s with total sectors %lu, size %.2lf %cB", |
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138 | name, (floppy ? "Floppy Disk" : "Hard Disk"), totallba, sizef, sizeChar ); |
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139 | } |
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140 | |
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141 | int Image::parseGeometry( char *str, unsigned long *p_cyl, unsigned long *p_head, unsigned long *p_sect ) |
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142 | { |
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143 | char *c, *s, *h; |
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144 | unsigned long cyl, sect, head; |
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145 | |
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146 | c = str; |
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147 | for( h = c; *h && *h != ':' && *h != 'x' && *h != 'X'; h++ ) ; |
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148 | if( !*h ) |
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149 | return( 0 ); |
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150 | |
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151 | *h = '\0'; |
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152 | h++; |
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153 | for( s = h+1; *s && *s != ':' && *s != 'x' && *s != 'X'; s++ ) ; |
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154 | if( !*s ) |
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155 | return( 0 ); |
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156 | |
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157 | *s = '\0'; |
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158 | s++; |
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159 | |
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160 | cyl = atol(c); |
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161 | head = atol(h); |
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162 | sect = atol(s); |
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163 | |
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164 | if( cyl == 0 || sect == 0 || head == 0 ) |
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165 | return( 0 ); |
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166 | |
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167 | *p_cyl = cyl; |
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168 | *p_head = head; |
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169 | *p_sect = sect; |
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170 | |
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171 | return( 1 ); |
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172 | } |
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173 | |
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174 | #define ATA_wGenCfg 0 |
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175 | #define ATA_wCylCnt 1 |
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176 | #define ATA_wHeadCnt 3 |
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177 | #define ATA_wBpTrck 4 |
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178 | #define ATA_wBpSect 5 |
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179 | #define ATA_wSPT 6 |
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180 | #define ATA_strSerial 10 |
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181 | #define ATA_strFirmware 23 |
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182 | #define ATA_strModel 27 |
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183 | #define ATA_wCaps 49 |
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184 | #define ATA_wCurCyls 54 |
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185 | #define ATA_wCurHeads 55 |
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186 | #define ATA_wCurSPT 56 |
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187 | #define ATA_dwCurSCnt 57 |
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188 | #define ATA_dwLBACnt 60 |
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189 | |
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190 | // Words carved out of the vendor specific area for our use |
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191 | // |
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192 | #define ATA_wSerialFloppyFlagAndType 158 |
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193 | #define ATA_wSerialPortAndBaud 159 |
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194 | |
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195 | // Defines used in the words above |
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196 | // |
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197 | #define ATA_wCaps_LBA 0x200 |
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198 | |
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199 | #define ATA_wGenCfg_FIXED 0x40 |
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200 | |
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201 | #define ATA_wSerialFloppyFlagAndType_Flag 0x10 |
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202 | #define ATA_wSerialFloppyFlagAndType_TypePosition 5 |
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203 | |
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204 | struct comPorts { |
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205 | unsigned long port; |
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206 | unsigned char com; |
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207 | }; |
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208 | struct comPorts supportedComPorts[] = |
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209 | { |
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210 | { 0x3f8, '1' }, |
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211 | { 0x2f8, '2' }, |
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212 | { 0x3e8, '3' }, |
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213 | { 0x2e8, '4' }, |
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214 | { 0x2f0, '5' }, |
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215 | { 0x3e0, '6' }, |
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216 | { 0x2e0, '7' }, |
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217 | { 0x260, '8' }, |
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218 | { 0x368, '9' }, |
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219 | { 0x268, 'A' }, |
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220 | { 0x360, 'B' }, |
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221 | { 0x270, 'C' }, |
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222 | { 0, 0 } |
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223 | }; |
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224 | |
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225 | void Image::respondInquire( unsigned short *buff, struct baudRate *baudRate, unsigned short port, unsigned char scan ) |
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226 | { |
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227 | memset( &buff[0], 0, 514 ); |
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228 | |
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229 | if( scan ) |
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230 | { |
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231 | unsigned short comPort = 0; |
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232 | struct comPorts *cp; |
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233 | |
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234 | if( port ) |
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235 | { |
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236 | for( cp = supportedComPorts; cp->port && cp->port != port; cp++ ) ; |
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237 | if( cp->port ) |
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238 | comPort = cp->com; |
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239 | } |
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240 | |
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241 | if( comPort ) |
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242 | sprintf( (char *) &buff[ATA_strModel], "%.15s (COM%c/%s)", shortFileName, comPort, baudRate->display ); |
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243 | else |
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244 | sprintf( (char *) &buff[ATA_strModel], "%.25s (%s baud)", shortFileName, baudRate->display ); |
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245 | } |
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246 | else |
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247 | sprintf( (char *) &buff[ATA_strModel], "%.30s", shortFileName ); |
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248 | |
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249 | strncpy( (char *) &buff[ATA_strSerial], "serial", 20 ); |
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250 | strncpy( (char *) &buff[ATA_strFirmware], "firmw", 8 ); |
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251 | |
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252 | for( int t = ATA_strModel; t < ATA_strModel+40; t++ ) |
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253 | buff[t] = (buff[t] >> 8) | (buff[t] << 8); |
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254 | |
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255 | if( useCHS ) |
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256 | { |
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257 | buff[ ATA_wCylCnt ] = cyl; |
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258 | buff[ ATA_wHeadCnt ] = head; |
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259 | buff[ ATA_wSPT ] = sect; |
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260 | } |
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261 | else |
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262 | { |
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263 | buff[ ATA_wCaps ] = ATA_wCaps_LBA; |
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264 | buff[ ATA_dwLBACnt ] = (unsigned short) (totallba & 0xffff); |
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265 | buff[ ATA_dwLBACnt+1 ] = (unsigned short) (totallba >> 16); |
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266 | } |
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267 | |
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268 | if( floppy ) |
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269 | buff[ ATA_wSerialFloppyFlagAndType ] = ATA_wSerialFloppyFlagAndType_Flag | (floppyType << ATA_wSerialFloppyFlagAndType_TypePosition); |
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270 | |
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271 | // we always set this, so that the bulk of the BIOS will consider this disk as a hard disk |
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272 | // |
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273 | buff[ ATA_wGenCfg ] = ATA_wGenCfg_FIXED; |
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274 | } |
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