source: xtideuniversalbios/trunk/Serial_Server/library/Image.cpp@ 372

Last change on this file since 372 was 334, checked in by gregli@…, 13 years ago

Serial server DPT flag optimization, remove Serial/IDE specific header on drive scan results, added GNU GPL v2 banner at boot.
File size: 8.7 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#include "library.h"
9#include <memory.h>
10#include <stdlib.h>
11#include <string.h>
12#include <stdio.h>
13
14struct floppyInfo floppyInfos[] =
15{
16 { 1, 2949120 / 512, 6, 80, 2, 36 }, // 2.88MB 3.5"
17 { 0, 2867200 / 512, 6, 80, 2, 36 }, // 2.88MB 3.5" (alternate spelling with 2.8)
18 { 0, 2969600 / 512, 6, 80, 2, 36 }, // 2.88MB 3.5" (alternate spelling with 2.9)
19 { 1, 1474560 / 512, 4, 80, 2, 18 }, // 1.44MB 3.5"
20 { 0, 1433600 / 512, 4, 80, 2, 18 }, // 1.44MB 3.5" (alternate spelling with 1.4)
21 { 1, 1228800 / 512, 2, 80, 2, 15 }, // 1.2MB 5.25"
22 { 1, 737280 / 512, 3, 80, 1, 18 }, // 720KB 3.5"
23 { 1, 368640 / 512, 1, 40, 2, 9 }, // 360KB 5.25"
24 { 1, 327680 / 512, 0, 40, 2, 8 }, // 320KB 5.25"
25 { 1, 184320 / 512, 0, 40, 1, 9 }, // 180KB 5.25" single sided
26 { 1, 163840 / 512, 0, 40, 1, 8 }, // 160KB 5.25" single sided
27 { 0, 0, 0, 0, 0, 0 }
28};
29
30struct floppyInfo *FindFloppyInfoBySize( double size )
31{
32 struct floppyInfo *fi;
33
34 for( fi = floppyInfos; fi->size != 0 && !(size+5 > fi->size && size-5 < fi->size); fi++ ) ;
35
36 if( fi->size == 0 )
37 fi = NULL;
38
39 return( fi );
40}
41
42void flipEndian( unsigned short *buff, unsigned int len )
43{
44 for( unsigned int t = 0; t < len/2; t++ )
45 buff[t] = (buff[t] & 0xff) << 8 | (buff[t] & 0xff00) >> 8;
46}
47
48Image::Image( char *name, int p_readOnly, int p_drive )
49{
50}
51
52Image::Image( char *name, int p_readOnly, int p_drive, int p_create, unsigned long p_lba )
53{
54}
55
56Image::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 )
57{
58}
59
60void 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 )
61{
62 double sizef;
63 char sizeChar;
64 struct floppyInfo *f;
65
66 for( char *c = shortFileName = name; *c; c++ )
67 if( *c == '\\' || *c == '/' || *c == ':' )
68 shortFileName = c+1;
69
70 if( *(shortFileName) == 0 )
71 {
72 log( 1, "Can't parse '%s' for short file name\n\n", name );
73 shortFileName = "SerDrive";
74 }
75
76 readOnly = p_readOnly;
77 drive = p_drive;
78
79 if( totallba > 0xfffffff ) // lba28 limit - 28 bits
80 log( -1, "'%s', Image size larger than LBA28 maximum of 137,438,952,960 bytes, %lu", name, totallba );
81
82 if( totallba == 0 )
83 log( -1, "'%s', Image size zero?" );
84
85 floppy = 0;
86 for( f = floppyInfos; f->size && !(f->size == totallba && f->real); f++ ) ;
87 if( f->size )
88 {
89 floppy = 1;
90 floppyType = f->type;
91 p_useCHS = 1;
92 p_cyl = f->cylinders;
93 p_head = f->heads;
94 p_sect = f->sectors;
95 totallba = p_cyl * p_head * p_sect;
96 }
97
98 if( p_useCHS )
99 {
100 if( p_cyl )
101 {
102 if( p_sect > 63 || (p_head > 16 || p_head < 1) || (p_cyl > 1024 || p_cyl < 1) )
103 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 );
104 else if( totallba != (p_sect * p_head * p_cyl) )
105 log( -1, "'%s', file size does not match geometry", name );
106 sect = p_sect;
107 head = p_head;
108 cyl = p_cyl;
109 }
110 else
111 {
112 if( (totallba % 16) != 0 || ((totallba/16) % 63) != 0 )
113 log( -1, "'%s', file size does not match standard CHS geometry (x:16:63), please specify geometry explicitly with -g", name );
114 else
115 {
116 sect = 63;
117 head = 16;
118 cyl = (totallba / sect / head);
119 if( cyl > 1024 )
120 log( -1, "'%s', CHS geometry of %lu:%lu:%lu is larger than maximum values 1024:16:63", name, cyl, head, sect );
121 }
122 }
123 }
124 else
125 {
126 sect = 0;
127 head = 0;
128 cyl = 0;
129 }
130 useCHS = p_useCHS;
131
132 sizef = totallba/2048.0;
133 sizeChar = 'M';
134 if( sizef < 1 )
135 {
136 sizef *= 1024;
137 sizeChar = 'K';
138 }
139 if( useCHS )
140 log( 0, "%s: %s with CHS geometry %u:%u:%u, size %.2lf %cB",
141 name, (floppy ? "Floppy Disk" : "Hard Disk"), cyl, head, sect, sizef, sizeChar );
142 else
143 log( 0, "%s: %s with total sectors %lu, size %.2lf %cB",
144 name, (floppy ? "Floppy Disk" : "Hard Disk"), totallba, sizef, sizeChar );
145}
146
147int Image::parseGeometry( char *str, unsigned long *p_cyl, unsigned long *p_head, unsigned long *p_sect )
148{
149 char *c, *s, *h;
150 unsigned long cyl, sect, head;
151
152 c = str;
153 for( h = c; *h && *h != ':' && *h != 'x' && *h != 'X'; h++ ) ;
154 if( !*h )
155 return( 0 );
156
157 *h = '\0';
158 h++;
159 for( s = h+1; *s && *s != ':' && *s != 'x' && *s != 'X'; s++ ) ;
160 if( !*s )
161 return( 0 );
162
163 *s = '\0';
164 s++;
165
166 cyl = atol(c);
167 head = atol(h);
168 sect = atol(s);
169
170 if( cyl == 0 || sect == 0 || head == 0 )
171 return( 0 );
172
173 *p_cyl = cyl;
174 *p_head = head;
175 *p_sect = sect;
176
177 return( 1 );
178}
179
180#define ATA_wGenCfg 0
181#define ATA_wCylCnt 1
182#define ATA_wHeadCnt 3
183#define ATA_wBpTrck 4
184#define ATA_wBpSect 5
185#define ATA_wSPT 6
186
187#define ATA_strSerial 10
188#define ATA_strSerial_Length 20
189
190#define ATA_strFirmware 23
191#define ATA_strFirmware_Length 8
192
193#define ATA_strModel 27
194#define ATA_strModel_Length 40 // Maximum allowable length of the string according to the ATA spec
195#define XTIDEBIOS_strModel_Length 30 // Maximum length copied out of the ATA information by the BIOS
196
197#define ATA_wCaps 49
198#define ATA_wCurCyls 54
199#define ATA_wCurHeads 55
200#define ATA_wCurSPT 56
201#define ATA_dwCurSCnt 57
202#define ATA_dwLBACnt 60
203
204// Words carved out of the vendor specific area for our use
205//
206#define ATA_wSerialServerVersion 157
207#define ATA_wSerialDriveFlags 158
208#define ATA_wSerialPortAndBaud 159
209
210// Defines used in the words above
211//
212#define ATA_wCaps_LBA 0x200
213
214#define ATA_wGenCfg_FIXED 0x40
215
216// These are all shifted by 1 bit to the right, so that SerialDPT_Finalize can shift them into proper position
217// and shift the high order bit into the carry flag to indicate a floppy drive is present.
218//
219#define ATA_wSerialDriveFlags_Floppy 0x88
220#define ATA_wSerialDriveFlags_Present 0x02
221#define ATA_wSerialDriveFlags_FloppyType_FieldPosition 4
222
223struct comPorts {
224 unsigned long port;
225 unsigned char com;
226};
227struct comPorts supportedComPorts[] =
228{
229 { 0x3f8, '1' },
230 { 0x2f8, '2' },
231 { 0x3e8, '3' },
232 { 0x2e8, '4' },
233 { 0x2f0, '5' },
234 { 0x3e0, '6' },
235 { 0x2e0, '7' },
236 { 0x260, '8' },
237 { 0x368, '9' },
238 { 0x268, 'A' },
239 { 0x360, 'B' },
240 { 0x270, 'C' },
241 { 0, 0 }
242};
243
244void Image::respondInquire( unsigned short *buff, unsigned short originalPortAndBaud, struct baudRate *baudRate, unsigned short port, unsigned char scan )
245{
246 char formatBuff[ 128 ];
247 char speedBuff[ 128 ];
248
249 memset( &buff[0], 0, 514 );
250
251 if( scan )
252 {
253 unsigned short comPort = 0;
254 struct comPorts *cp;
255
256 if( port )
257 {
258 for( cp = supportedComPorts; cp->port && cp->port != port; cp++ ) ;
259 if( cp->port )
260 comPort = cp->com;
261 }
262
263 if( comPort )
264 sprintf( speedBuff, " (COM%c/%s)", comPort, baudRate->display );
265 else
266 sprintf( speedBuff, " (%s baud)", shortFileName, baudRate->display );
267
268 sprintf( formatBuff, "%.*s%s ", XTIDEBIOS_strModel_Length - strlen(speedBuff), shortFileName, speedBuff );
269 }
270 else
271 sprintf( formatBuff, "%.*s ", XTIDEBIOS_strModel_Length, shortFileName );
272 strncpy( (char *) &buff[ATA_strModel], formatBuff, ATA_strModel_Length );
273 flipEndian( &buff[ATA_strModel], ATA_strModel_Length );
274
275 strncpy( (char *) &buff[ATA_strSerial], "SerialDrive ", ATA_strSerial_Length );
276 flipEndian( &buff[ATA_strSerial], ATA_strSerial_Length );
277
278 sprintf( formatBuff, "%d.%d ", SERIAL_SERVER_MAJORVERSION, SERIAL_SERVER_MINORVERSION );
279 strncpy( (char *) &buff[ATA_strFirmware], formatBuff, ATA_strFirmware_Length );
280 flipEndian( &buff[ATA_strFirmware], ATA_strFirmware_Length );
281
282 if( useCHS )
283 {
284 buff[ ATA_wCylCnt ] = cyl;
285 buff[ ATA_wHeadCnt ] = head;
286 buff[ ATA_wSPT ] = sect;
287 }
288 else
289 {
290 buff[ ATA_wCaps ] = ATA_wCaps_LBA;
291 buff[ ATA_dwLBACnt ] = (unsigned short) (totallba & 0xffff);
292 buff[ ATA_dwLBACnt+1 ] = (unsigned short) (totallba >> 16);
293 }
294
295 // We echo back the port and baud that we were called on from the client,
296 // the client then uses this value to finalize the DPT.
297 //
298 buff[ ATA_wSerialPortAndBaud ] = originalPortAndBaud;
299
300 // In case the client requires a specific server version...
301 //
302 buff[ ATA_wSerialServerVersion ] = (SERIAL_SERVER_MAJORVERSION << 8) | SERIAL_SERVER_MINORVERSION;
303
304 buff[ ATA_wSerialDriveFlags ] = ATA_wSerialDriveFlags_Present;
305 if( floppy )
306 buff[ ATA_wSerialDriveFlags ] |=
307 ATA_wSerialDriveFlags_Floppy | (floppyType << ATA_wSerialDriveFlags_FloppyType_FieldPosition);
308
309 // we always set this, so that the bulk of the BIOS will consider this disk as a hard disk
310 //
311 buff[ ATA_wGenCfg ] = ATA_wGenCfg_FIXED;
312}
313
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