source: xtideuniversalbios/trunk/Serial_Server/library/Image.cpp@ 405

Last change on this file since 405 was 376, checked in by gregli@…, 13 years ago

WIDE checkin... Added copyright and license information to sorce files, as per the GPL instructions for usage.
File size: 9.4 KB
Line 
1//======================================================================
2//
3// Project: XTIDE Universal BIOS, Serial Port Server
4//
5// File: image.cpp - Abstract base class for disk image support
6//
7
8//
9// XTIDE Universal BIOS and Associated Tools
10// Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
11//
12// This program is free software; you can redistribute it and/or modify
13// it under the terms of the GNU General Public License as published by
14// the Free Software Foundation; either version 2 of the License, or
15// (at your option) any later version.
16//
17// This program is distributed in the hope that it will be useful,
18// but WITHOUT ANY WARRANTY; without even the implied warranty of
19// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20// GNU General Public License for more details.
21// Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
22//
23
24#include "library.h"
25#include <memory.h>
26#include <stdlib.h>
27#include <string.h>
28#include <stdio.h>
29
30struct floppyInfo floppyInfos[] =
31{
32 { 1, 2949120 / 512, 6, 80, 2, 36 }, // 2.88MB 3.5"
33 { 0, 2867200 / 512, 6, 80, 2, 36 }, // 2.88MB 3.5" (alternate spelling with 2.8)
34 { 0, 2969600 / 512, 6, 80, 2, 36 }, // 2.88MB 3.5" (alternate spelling with 2.9)
35 { 1, 1474560 / 512, 4, 80, 2, 18 }, // 1.44MB 3.5"
36 { 0, 1433600 / 512, 4, 80, 2, 18 }, // 1.44MB 3.5" (alternate spelling with 1.4)
37 { 1, 1228800 / 512, 2, 80, 2, 15 }, // 1.2MB 5.25"
38 { 1, 737280 / 512, 3, 80, 1, 18 }, // 720KB 3.5"
39 { 1, 368640 / 512, 1, 40, 2, 9 }, // 360KB 5.25"
40 { 1, 327680 / 512, 0, 40, 2, 8 }, // 320KB 5.25"
41 { 1, 184320 / 512, 0, 40, 1, 9 }, // 180KB 5.25" single sided
42 { 1, 163840 / 512, 0, 40, 1, 8 }, // 160KB 5.25" single sided
43 { 0, 0, 0, 0, 0, 0 }
44};
45
46struct floppyInfo *FindFloppyInfoBySize( double size )
47{
48 struct floppyInfo *fi;
49
50 for( fi = floppyInfos; fi->size != 0 && !(size+5 > fi->size && size-5 < fi->size); fi++ ) ;
51
52 if( fi->size == 0 )
53 fi = NULL;
54
55 return( fi );
56}
57
58void flipEndian( unsigned short *buff, unsigned int len )
59{
60 for( unsigned int t = 0; t < len/2; t++ )
61 buff[t] = (buff[t] & 0xff) << 8 | (buff[t] & 0xff00) >> 8;
62}
63
64Image::Image( char *name, int p_readOnly, int p_drive )
65{
66}
67
68Image::Image( char *name, int p_readOnly, int p_drive, int p_create, unsigned long p_lba )
69{
70}
71
72Image::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 )
73{
74}
75
76void 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 )
77{
78 double sizef;
79 char sizeChar;
80 struct floppyInfo *f;
81
82 for( char *c = shortFileName = name; *c; c++ )
83 if( *c == '\\' || *c == '/' || *c == ':' )
84 shortFileName = c+1;
85
86 if( *(shortFileName) == 0 )
87 {
88 log( 1, "Can't parse '%s' for short file name\n\n", name );
89 shortFileName = "SerDrive";
90 }
91
92 readOnly = p_readOnly;
93 drive = p_drive;
94
95 if( totallba > 0xfffffff ) // lba28 limit - 28 bits
96 log( -1, "'%s', Image size larger than LBA28 maximum of 137,438,952,960 bytes, %lu", name, totallba );
97
98 if( totallba == 0 )
99 log( -1, "'%s', Image size zero?" );
100
101 floppy = 0;
102 for( f = floppyInfos; f->size && !(f->size == totallba && f->real); f++ ) ;
103 if( f->size )
104 {
105 floppy = 1;
106 floppyType = f->type;
107 p_useCHS = 1;
108 p_cyl = f->cylinders;
109 p_head = f->heads;
110 p_sect = f->sectors;
111 totallba = p_cyl * p_head * p_sect;
112 }
113
114 if( p_useCHS )
115 {
116 if( p_cyl )
117 {
118 if( p_sect > 63 || (p_head > 16 || p_head < 1) || (p_cyl > 1024 || p_cyl < 1) )
119 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 );
120 else if( totallba != (p_sect * p_head * p_cyl) )
121 log( -1, "'%s', file size does not match geometry", name );
122 sect = p_sect;
123 head = p_head;
124 cyl = p_cyl;
125 }
126 else
127 {
128 if( (totallba % 16) != 0 || ((totallba/16) % 63) != 0 )
129 log( -1, "'%s', file size does not match standard CHS geometry (x:16:63), please specify geometry explicitly with -g", name );
130 else
131 {
132 sect = 63;
133 head = 16;
134 cyl = (totallba / sect / head);
135 if( cyl > 1024 )
136 log( -1, "'%s', CHS geometry of %lu:%lu:%lu is larger than maximum values 1024:16:63", name, cyl, head, sect );
137 }
138 }
139 }
140 else
141 {
142 sect = 0;
143 head = 0;
144 cyl = 0;
145 }
146 useCHS = p_useCHS;
147
148 sizef = totallba/2048.0;
149 sizeChar = 'M';
150 if( sizef < 1 )
151 {
152 sizef *= 1024;
153 sizeChar = 'K';
154 }
155 if( useCHS )
156 log( 0, "%s: %s with CHS geometry %u:%u:%u, size %.2lf %cB",
157 name, (floppy ? "Floppy Disk" : "Hard Disk"), cyl, head, sect, sizef, sizeChar );
158 else
159 log( 0, "%s: %s with total sectors %lu, size %.2lf %cB",
160 name, (floppy ? "Floppy Disk" : "Hard Disk"), totallba, sizef, sizeChar );
161}
162
163int Image::parseGeometry( char *str, unsigned long *p_cyl, unsigned long *p_head, unsigned long *p_sect )
164{
165 char *c, *s, *h;
166 unsigned long cyl, sect, head;
167
168 c = str;
169 for( h = c; *h && *h != ':' && *h != 'x' && *h != 'X'; h++ ) ;
170 if( !*h )
171 return( 0 );
172
173 *h = '\0';
174 h++;
175 for( s = h+1; *s && *s != ':' && *s != 'x' && *s != 'X'; s++ ) ;
176 if( !*s )
177 return( 0 );
178
179 *s = '\0';
180 s++;
181
182 cyl = atol(c);
183 head = atol(h);
184 sect = atol(s);
185
186 if( cyl == 0 || sect == 0 || head == 0 )
187 return( 0 );
188
189 *p_cyl = cyl;
190 *p_head = head;
191 *p_sect = sect;
192
193 return( 1 );
194}
195
196#define ATA_wGenCfg 0
197#define ATA_wCylCnt 1
198#define ATA_wHeadCnt 3
199#define ATA_wBpTrck 4
200#define ATA_wBpSect 5
201#define ATA_wSPT 6
202
203#define ATA_strSerial 10
204#define ATA_strSerial_Length 20
205
206#define ATA_strFirmware 23
207#define ATA_strFirmware_Length 8
208
209#define ATA_strModel 27
210#define ATA_strModel_Length 40 // Maximum allowable length of the string according to the ATA spec
211#define XTIDEBIOS_strModel_Length 30 // Maximum length copied out of the ATA information by the BIOS
212
213#define ATA_wCaps 49
214#define ATA_wCurCyls 54
215#define ATA_wCurHeads 55
216#define ATA_wCurSPT 56
217#define ATA_dwCurSCnt 57
218#define ATA_dwLBACnt 60
219
220// Words carved out of the vendor specific area for our use
221//
222#define ATA_wSerialServerVersion 157
223#define ATA_wSerialDriveFlags 158
224#define ATA_wSerialPortAndBaud 159
225
226// Defines used in the words above
227//
228#define ATA_wCaps_LBA 0x200
229
230#define ATA_wGenCfg_FIXED 0x40
231
232// These are all shifted by 1 bit to the right, so that SerialDPT_Finalize can shift them into proper position
233// and shift the high order bit into the carry flag to indicate a floppy drive is present.
234//
235#define ATA_wSerialDriveFlags_Floppy 0x88
236#define ATA_wSerialDriveFlags_Present 0x02
237#define ATA_wSerialDriveFlags_FloppyType_FieldPosition 4
238
239struct comPorts {
240 unsigned long port;
241 unsigned char com;
242};
243struct comPorts supportedComPorts[] =
244{
245 { 0x3f8, '1' },
246 { 0x2f8, '2' },
247 { 0x3e8, '3' },
248 { 0x2e8, '4' },
249 { 0x2f0, '5' },
250 { 0x3e0, '6' },
251 { 0x2e0, '7' },
252 { 0x260, '8' },
253 { 0x368, '9' },
254 { 0x268, 'A' },
255 { 0x360, 'B' },
256 { 0x270, 'C' },
257 { 0, 0 }
258};
259
260void Image::respondInquire( unsigned short *buff, unsigned short originalPortAndBaud, struct baudRate *baudRate, unsigned short port, unsigned char scan )
261{
262 char formatBuff[ 128 ];
263 char speedBuff[ 128 ];
264
265 memset( &buff[0], 0, 514 );
266
267 if( scan )
268 {
269 unsigned short comPort = 0;
270 struct comPorts *cp;
271
272 if( port )
273 {
274 for( cp = supportedComPorts; cp->port && cp->port != port; cp++ ) ;
275 if( cp->port )
276 comPort = cp->com;
277 }
278
279 if( comPort )
280 sprintf( speedBuff, " (COM%c/%s)", comPort, baudRate->display );
281 else
282 sprintf( speedBuff, " (%s baud)", shortFileName, baudRate->display );
283
284 sprintf( formatBuff, "%.*s%s ", XTIDEBIOS_strModel_Length - strlen(speedBuff), shortFileName, speedBuff );
285 }
286 else
287 sprintf( formatBuff, "%.*s ", XTIDEBIOS_strModel_Length, shortFileName );
288 strncpy( (char *) &buff[ATA_strModel], formatBuff, ATA_strModel_Length );
289 flipEndian( &buff[ATA_strModel], ATA_strModel_Length );
290
291 strncpy( (char *) &buff[ATA_strSerial], "SerialDrive ", ATA_strSerial_Length );
292 flipEndian( &buff[ATA_strSerial], ATA_strSerial_Length );
293
294 sprintf( formatBuff, "%d.%d ", SERIAL_SERVER_MAJORVERSION, SERIAL_SERVER_MINORVERSION );
295 strncpy( (char *) &buff[ATA_strFirmware], formatBuff, ATA_strFirmware_Length );
296 flipEndian( &buff[ATA_strFirmware], ATA_strFirmware_Length );
297
298 if( useCHS )
299 {
300 buff[ ATA_wCylCnt ] = cyl;
301 buff[ ATA_wHeadCnt ] = head;
302 buff[ ATA_wSPT ] = sect;
303 }
304 else
305 {
306 buff[ ATA_wCaps ] = ATA_wCaps_LBA;
307 buff[ ATA_dwLBACnt ] = (unsigned short) (totallba & 0xffff);
308 buff[ ATA_dwLBACnt+1 ] = (unsigned short) (totallba >> 16);
309 }
310
311 // We echo back the port and baud that we were called on from the client,
312 // the client then uses this value to finalize the DPT.
313 //
314 buff[ ATA_wSerialPortAndBaud ] = originalPortAndBaud;
315
316 // In case the client requires a specific server version...
317 //
318 buff[ ATA_wSerialServerVersion ] = (SERIAL_SERVER_MAJORVERSION << 8) | SERIAL_SERVER_MINORVERSION;
319
320 buff[ ATA_wSerialDriveFlags ] = ATA_wSerialDriveFlags_Present;
321 if( floppy )
322 buff[ ATA_wSerialDriveFlags ] |=
323 ATA_wSerialDriveFlags_Floppy | (floppyType << ATA_wSerialDriveFlags_FloppyType_FieldPosition);
324
325 // we always set this, so that the bulk of the BIOS will consider this disk as a hard disk
326 //
327 buff[ ATA_wGenCfg ] = ATA_wGenCfg_FIXED;
328}
329
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