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