1
2
/*
* QEMU PC System Emulator
ths
authored
18 years ago
3
*
4
* Copyright ( c ) 2003 - 2004 Fabrice Bellard
ths
authored
18 years ago
5
*
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
* Permission is hereby granted , free of charge , to any person obtaining a copy
* of this software and associated documentation files ( the "Software" ), to deal
* in the Software without restriction , including without limitation the rights
* to use , copy , modify , merge , publish , distribute , sublicense , and / or sell
* copies of the Software , and to permit persons to whom the Software is
* furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software .
*
* THE SOFTWARE IS PROVIDED "AS IS" , WITHOUT WARRANTY OF ANY KIND , EXPRESS OR
* IMPLIED , INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY ,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT . IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM , DAMAGES OR OTHER
* LIABILITY , WHETHER IN AN ACTION OF CONTRACT , TORT OR OTHERWISE , ARISING FROM ,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE .
*/
24
25
26
27
28
29
30
31
32
33
# include "hw.h"
# include "pc.h"
# include "fdc.h"
# include "pci.h"
# include "block.h"
# include "sysemu.h"
# include "audio/audio.h"
# include "net.h"
# include "smbus.h"
# include "boards.h"
34
# include "console.h"
35
# include "fw_cfg.h"
36
# include "virtio-blk.h"
37
# include "virtio-balloon.h"
38
# include "virtio-console.h"
39
# include "hpet_emul.h"
40
41
42
43
/* output Bochs bios info messages */
// # define DEBUG_BIOS
44
45
# define BIOS_FILENAME "bios.bin"
# define VGABIOS_FILENAME "vgabios.bin"
46
# define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
47
48
49
# define PC_MAX_BIOS_SIZE ( 4 * 1024 * 1024 )
50
51
/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
# define ACPI_DATA_SIZE 0x10000
52
# define BIOS_CFG_IOPORT 0x510
53
ths
authored
17 years ago
54
55
# define MAX_IDE_BUS 2
56
static fdctrl_t * floppy_controller ;
57
static RTCState * rtc_state ;
58
static PITState * pit ;
59
static IOAPICState * ioapic ;
60
static PCIDevice * i440fx_state ;
61
62
static void ioport80_write ( void * opaque , uint32_t addr , uint32_t data )
63
64
65
{
}
66
/* MSDOS compatibility mode FPU exception support */
67
static qemu_irq ferr_irq ;
68
69
70
/* XXX: add IGNNE support */
void cpu_set_ferr ( CPUX86State * s )
{
71
qemu_irq_raise ( ferr_irq );
72
73
74
75
}
static void ioportF0_write ( void * opaque , uint32_t addr , uint32_t data )
{
76
qemu_irq_lower ( ferr_irq );
77
78
}
79
80
81
/* TSC handling */
uint64_t cpu_get_tsc ( CPUX86State * env )
{
82
83
84
/* Note : when using kqemu , it is more logical to return the host TSC
because kqemu does not trap the RDTSC instruction for
performance reasons */
85
# ifdef USE_KQEMU
86
87
if ( env -> kqemu_enabled ) {
return cpu_get_real_ticks ();
ths
authored
18 years ago
88
} else
89
90
91
92
# endif
{
return cpu_get_ticks ();
}
93
94
}
95
96
97
98
99
100
101
102
/* SMM support */
void cpu_smm_update ( CPUState * env )
{
if ( i440fx_state && env == first_cpu )
i440fx_set_smm ( i440fx_state , ( env -> hflags >> HF_SMM_SHIFT ) & 1 );
}
103
104
105
106
107
108
109
110
111
/* IRQ handling */
int cpu_get_pic_interrupt ( CPUState * env )
{
int intno ;
intno = apic_get_interrupt ( env );
if ( intno >= 0 ) {
/* set irq request if a PIC irq is still pending */
/* XXX: improve that */
ths
authored
18 years ago
112
pic_update_irq ( isa_pic );
113
114
115
return intno ;
}
/* read the irq from the PIC */
ths
authored
17 years ago
116
117
118
if ( ! apic_accept_pic_intr ( env ))
return - 1 ;
119
120
121
122
intno = pic_read_irq ( isa_pic );
return intno ;
}
123
static void pic_irq_request ( void * opaque , int irq , int level )
124
{
125
126
CPUState * env = first_cpu ;
127
128
129
if ( env -> apic_state ) {
while ( env ) {
if ( apic_accept_pic_intr ( env ))
130
apic_deliver_pic_intr ( env , level );
131
132
133
env = env -> next_cpu ;
}
} else {
134
135
136
137
if ( level )
cpu_interrupt ( env , CPU_INTERRUPT_HARD );
else
cpu_reset_interrupt ( env , CPU_INTERRUPT_HARD );
138
}
139
140
}
141
142
/* PC cmos mappings */
143
144
# define REG_EQUIPMENT_BYTE 0x14
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
static int cmos_get_fd_drive_type ( int fd0 )
{
int val ;
switch ( fd0 ) {
case 0 :
/* 1.44 Mb 3"5 drive */
val = 4 ;
break ;
case 1 :
/* 2.88 Mb 3"5 drive */
val = 5 ;
break ;
case 2 :
/* 1.2 Mb 5"5 drive */
val = 2 ;
break ;
default :
val = 0 ;
break ;
}
return val ;
}
ths
authored
18 years ago
169
static void cmos_init_hd ( int type_ofs , int info_ofs , BlockDriverState * hd )
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
{
RTCState * s = rtc_state ;
int cylinders , heads , sectors ;
bdrv_get_geometry_hint ( hd , & cylinders , & heads , & sectors );
rtc_set_memory ( s , type_ofs , 47 );
rtc_set_memory ( s , info_ofs , cylinders );
rtc_set_memory ( s , info_ofs + 1 , cylinders >> 8 );
rtc_set_memory ( s , info_ofs + 2 , heads );
rtc_set_memory ( s , info_ofs + 3 , 0xff );
rtc_set_memory ( s , info_ofs + 4 , 0xff );
rtc_set_memory ( s , info_ofs + 5 , 0xc0 | (( heads > 8 ) << 3 ));
rtc_set_memory ( s , info_ofs + 6 , cylinders );
rtc_set_memory ( s , info_ofs + 7 , cylinders >> 8 );
rtc_set_memory ( s , info_ofs + 8 , sectors );
}
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
/* convert boot_device letter to something recognizable by the bios */
static int boot_device2nibble ( char boot_device )
{
switch ( boot_device ) {
case 'a' :
case 'b' :
return 0x01 ; /* floppy boot */
case 'c' :
return 0x02 ; /* hard drive boot */
case 'd' :
return 0x03 ; /* CD-ROM boot */
case 'n' :
return 0x04 ; /* Network boot */
}
return 0 ;
}
203
204
/* copy / pasted from cmos_init , should be made a general function
and used there as well */
205
static int pc_boot_set ( void * opaque , const char * boot_device )
206
207
{
# define PC_MAX_BOOT_DEVICES 3
208
RTCState * s = ( RTCState * ) opaque ;
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
int nbds , bds [ 3 ] = { 0 , };
int i ;
nbds = strlen ( boot_device );
if ( nbds > PC_MAX_BOOT_DEVICES ) {
term_printf ( "Too many boot devices for PC \n " );
return ( 1 );
}
for ( i = 0 ; i < nbds ; i ++ ) {
bds [ i ] = boot_device2nibble ( boot_device [ i ]);
if ( bds [ i ] == 0 ) {
term_printf ( "Invalid boot device for PC: '%c' \n " ,
boot_device [ i ]);
return ( 1 );
}
}
rtc_set_memory ( s , 0x3d , ( bds [ 1 ] << 4 ) | bds [ 0 ]);
rtc_set_memory ( s , 0x38 , ( bds [ 2 ] << 4 ));
return ( 0 );
}
230
/* hd_table must contain 4 block drivers */
231
232
static void cmos_init ( ram_addr_t ram_size , ram_addr_t above_4g_mem_size ,
const char * boot_device , BlockDriverState ** hd_table )
233
{
234
RTCState * s = rtc_state ;
235
int nbds , bds [ 3 ] = { 0 , };
236
int val ;
237
int fd0 , fd1 , nb ;
238
int i ;
239
240
/* various important CMOS locations needed by PC/Bochs bios */
241
242
/* memory size */
243
244
245
246
val = 640 ; /* base memory in K */
rtc_set_memory ( s , 0x15 , val );
rtc_set_memory ( s , 0x16 , val >> 8 );
247
248
249
val = ( ram_size / 1024 ) - 1024 ;
if ( val > 65535 )
val = 65535 ;
250
251
252
253
rtc_set_memory ( s , 0x17 , val );
rtc_set_memory ( s , 0x18 , val >> 8 );
rtc_set_memory ( s , 0x30 , val );
rtc_set_memory ( s , 0x31 , val >> 8 );
254
255
256
257
258
259
260
if ( above_4g_mem_size ) {
rtc_set_memory ( s , 0x5b , ( unsigned int ) above_4g_mem_size >> 16 );
rtc_set_memory ( s , 0x5c , ( unsigned int ) above_4g_mem_size >> 24 );
rtc_set_memory ( s , 0x5d , ( uint64_t ) above_4g_mem_size >> 32 );
}
261
262
263
264
if ( ram_size > ( 16 * 1024 * 1024 ))
val = ( ram_size / 65536 ) - (( 16 * 1024 * 1024 ) / 65536 );
else
val = 0 ;
265
266
if ( val > 65535 )
val = 65535 ;
267
268
rtc_set_memory ( s , 0x34 , val );
rtc_set_memory ( s , 0x35 , val >> 8 );
ths
authored
18 years ago
269
270
271
272
/* set the number of CPU */
rtc_set_memory ( s , 0x5f , smp_cpus - 1 );
273
/* set boot devices, and disable floppy signature check if requested */
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
# define PC_MAX_BOOT_DEVICES 3
nbds = strlen ( boot_device );
if ( nbds > PC_MAX_BOOT_DEVICES ) {
fprintf ( stderr , "Too many boot devices for PC \n " );
exit ( 1 );
}
for ( i = 0 ; i < nbds ; i ++ ) {
bds [ i ] = boot_device2nibble ( boot_device [ i ]);
if ( bds [ i ] == 0 ) {
fprintf ( stderr , "Invalid boot device for PC: '%c' \n " ,
boot_device [ i ]);
exit ( 1 );
}
}
rtc_set_memory ( s , 0x3d , ( bds [ 1 ] << 4 ) | bds [ 0 ]);
rtc_set_memory ( s , 0x38 , ( bds [ 2 ] << 4 ) | ( fd_bootchk ? 0x0 : 0x1 ));
290
291
292
/* floppy type */
293
294
fd0 = fdctrl_get_drive_type ( floppy_controller , 0 );
fd1 = fdctrl_get_drive_type ( floppy_controller , 1 );
295
296
val = ( cmos_get_fd_drive_type ( fd0 ) << 4 ) | cmos_get_fd_drive_type ( fd1 );
297
rtc_set_memory ( s , 0x10 , val );
ths
authored
18 years ago
298
299
val = 0 ;
300
nb = 0 ;
301
302
303
304
305
306
307
308
if ( fd0 < 3 )
nb ++ ;
if ( fd1 < 3 )
nb ++ ;
switch ( nb ) {
case 0 :
break ;
case 1 :
309
val |= 0x01 ; /* 1 drive, ready for boot */
310
311
break ;
case 2 :
312
val |= 0x41 ; /* 2 drives, ready for boot */
313
314
break ;
}
315
316
317
318
val |= 0x02 ; /* FPU is there */
val |= 0x04 ; /* PS/2 mouse installed */
rtc_set_memory ( s , REG_EQUIPMENT_BYTE , val );
319
320
321
322
323
/* hard drives */
rtc_set_memory ( s , 0x12 , ( hd_table [ 0 ] ? 0xf0 : 0 ) | ( hd_table [ 1 ] ? 0x0f : 0 ));
if ( hd_table [ 0 ])
cmos_init_hd ( 0x19 , 0x1b , hd_table [ 0 ]);
ths
authored
18 years ago
324
if ( hd_table [ 1 ])
325
326
327
cmos_init_hd ( 0x1a , 0x24 , hd_table [ 1 ]);
val = 0 ;
328
for ( i = 0 ; i < 4 ; i ++ ) {
329
if ( hd_table [ i ]) {
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
int cylinders , heads , sectors , translation ;
/* NOTE : bdrv_get_geometry_hint () returns the physical
geometry . It is always such that : 1 <= sects <= 63 , 1
<= heads <= 16 , 1 <= cylinders <= 16383 . The BIOS
geometry can be different if a translation is done . */
translation = bdrv_get_translation_hint ( hd_table [ i ]);
if ( translation == BIOS_ATA_TRANSLATION_AUTO ) {
bdrv_get_geometry_hint ( hd_table [ i ], & cylinders , & heads , & sectors );
if ( cylinders <= 1024 && heads <= 16 && sectors <= 63 ) {
/* No translation. */
translation = 0 ;
} else {
/* LBA translation. */
translation = 1 ;
}
345
} else {
346
translation -- ;
347
348
349
}
val |= translation << ( i * 2 );
}
350
}
351
rtc_set_memory ( s , 0x39 , val );
352
353
}
354
355
356
357
358
359
360
361
362
363
364
void ioport_set_a20 ( int enable )
{
/* XXX: send to all CPUs ? */
cpu_x86_set_a20 ( first_cpu , enable );
}
int ioport_get_a20 ( void )
{
return (( first_cpu -> a20_mask >> 20 ) & 1 );
}
365
366
static void ioport92_write ( void * opaque , uint32_t addr , uint32_t val )
{
367
ioport_set_a20 (( val >> 1 ) & 1 );
368
369
370
371
372
/* XXX: bit 0 is fast reset */
}
static uint32_t ioport92_read ( void * opaque , uint32_t addr )
{
373
return ioport_get_a20 () << 1 ;
374
375
}
376
377
378
/***********************************************************/
/* Bochs BIOS debug ports */
379
static void bochs_bios_write ( void * opaque , uint32_t addr , uint32_t val )
380
{
381
382
static const char shutdown_str [ 8 ] = "Shutdown" ;
static int shutdown_index = 0 ;
ths
authored
18 years ago
383
384
385
386
387
388
389
390
391
392
393
394
395
switch ( addr ) {
/* Bochs BIOS messages */
case 0x400 :
case 0x401 :
fprintf ( stderr , "BIOS panic at rombios.c, line %d \n " , val );
exit ( 1 );
case 0x402 :
case 0x403 :
# ifdef DEBUG_BIOS
fprintf ( stderr , "%c" , val );
# endif
break ;
396
397
398
399
400
401
402
403
404
405
406
407
case 0x8900 :
/* same as Bochs power off */
if ( val == shutdown_str [ shutdown_index ]) {
shutdown_index ++ ;
if ( shutdown_index == 8 ) {
shutdown_index = 0 ;
qemu_system_shutdown_request ();
}
} else {
shutdown_index = 0 ;
}
break ;
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
/* LGPL'ed VGA BIOS messages */
case 0x501 :
case 0x502 :
fprintf ( stderr , "VGA BIOS panic, line %d \n " , val );
exit ( 1 );
case 0x500 :
case 0x503 :
# ifdef DEBUG_BIOS
fprintf ( stderr , "%c" , val );
# endif
break ;
}
}
423
static void bochs_bios_init ( void )
424
{
425
426
void * fw_cfg ;
427
428
429
430
register_ioport_write ( 0x400 , 1 , 2 , bochs_bios_write , NULL );
register_ioport_write ( 0x401 , 1 , 2 , bochs_bios_write , NULL );
register_ioport_write ( 0x402 , 1 , 1 , bochs_bios_write , NULL );
register_ioport_write ( 0x403 , 1 , 1 , bochs_bios_write , NULL );
431
register_ioport_write ( 0x8900 , 1 , 1 , bochs_bios_write , NULL );
432
433
434
435
436
register_ioport_write ( 0x501 , 1 , 2 , bochs_bios_write , NULL );
register_ioport_write ( 0x502 , 1 , 2 , bochs_bios_write , NULL );
register_ioport_write ( 0x500 , 1 , 1 , bochs_bios_write , NULL );
register_ioport_write ( 0x503 , 1 , 1 , bochs_bios_write , NULL );
437
438
439
fw_cfg = fw_cfg_init ( BIOS_CFG_IOPORT , BIOS_CFG_IOPORT + 1 , 0 , 0 );
fw_cfg_add_i32 ( fw_cfg , FW_CFG_ID , 1 );
440
fw_cfg_add_i64 ( fw_cfg , FW_CFG_RAM_SIZE , ( uint64_t ) ram_size );
441
442
}
ths
authored
18 years ago
443
444
/* Generate an initial boot sector which sets state and jump to
a specified vector */
445
446
static void generate_bootsect ( uint8_t * option_rom ,
uint32_t gpr [ 8 ], uint16_t segs [ 6 ], uint16_t ip )
ths
authored
18 years ago
447
{
448
449
uint8_t rom [ 512 ], * p , * reloc ;
uint8_t sum ;
ths
authored
18 years ago
450
451
int i ;
452
453
454
455
456
457
memset ( rom , 0 , sizeof ( rom ));
p = rom ;
/* Make sure we have an option rom signature */
* p ++ = 0x55 ;
* p ++ = 0xaa ;
ths
authored
18 years ago
458
459
460
/* ROM size in sectors*/
* p ++ = 1 ;
ths
authored
18 years ago
461
462
/* Hook int19 */
ths
authored
18 years ago
463
464
465
466
467
* p ++ = 0x50 ; /* push ax */
* p ++ = 0x1e ; /* push ds */
* p ++ = 0x31 ; * p ++ = 0xc0 ; /* xor ax, ax */
* p ++ = 0x8e ; * p ++ = 0xd8 ; /* mov ax, ds */
ths
authored
18 years ago
468
469
470
471
472
473
474
475
476
477
478
479
480
* p ++ = 0xc7 ; * p ++ = 0x06 ; /* movvw _start,0x64 */
* p ++ = 0x64 ; * p ++ = 0x00 ;
reloc = p ;
* p ++ = 0x00 ; * p ++ = 0x00 ;
* p ++ = 0x8c ; * p ++ = 0x0e ; /* mov cs,0x66 */
* p ++ = 0x66 ; * p ++ = 0x00 ;
* p ++ = 0x1f ; /* pop ds */
* p ++ = 0x58 ; /* pop ax */
* p ++ = 0xcb ; /* lret */
ths
authored
18 years ago
481
/* Actual code */
482
483
* reloc = ( p - rom );
ths
authored
18 years ago
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
* p ++ = 0xfa ; /* CLI */
* p ++ = 0xfc ; /* CLD */
for ( i = 0 ; i < 6 ; i ++ ) {
if ( i == 1 ) /* Skip CS */
continue ;
* p ++ = 0xb8 ; /* MOV AX,imm16 */
* p ++ = segs [ i ];
* p ++ = segs [ i ] >> 8 ;
* p ++ = 0x8e ; /* MOV <seg>,AX */
* p ++ = 0xc0 + ( i << 3 );
}
for ( i = 0 ; i < 8 ; i ++ ) {
* p ++ = 0x66 ; /* 32-bit operand size */
* p ++ = 0xb8 + i ; /* MOV <reg>,imm32 */
* p ++ = gpr [ i ];
* p ++ = gpr [ i ] >> 8 ;
* p ++ = gpr [ i ] >> 16 ;
* p ++ = gpr [ i ] >> 24 ;
}
* p ++ = 0xea ; /* JMP FAR */
* p ++ = ip ; /* IP */
* p ++ = ip >> 8 ;
* p ++ = segs [ 1 ]; /* CS */
* p ++ = segs [ 1 ] >> 8 ;
513
514
515
516
517
518
519
/* sign rom */
sum = 0 ;
for ( i = 0 ; i < ( sizeof ( rom ) - 1 ); i ++ )
sum += rom [ i ];
rom [ sizeof ( rom ) - 1 ] = - sum ;
memcpy ( option_rom , rom , sizeof ( rom ));
ths
authored
18 years ago
520
}
521
ths
authored
18 years ago
522
523
524
525
526
527
528
529
530
531
532
533
534
535
static long get_file_size ( FILE * f )
{
long where , size ;
/* XXX: on Unix systems, using fstat() probably makes more sense */
where = ftell ( f );
fseek ( f , 0 , SEEK_END );
size = ftell ( f );
fseek ( f , where , SEEK_SET );
return size ;
}
536
537
static void load_linux ( uint8_t * option_rom ,
const char * kernel_filename ,
ths
authored
18 years ago
538
539
540
541
542
543
544
545
546
547
const char * initrd_filename ,
const char * kernel_cmdline )
{
uint16_t protocol ;
uint32_t gpr [ 8 ];
uint16_t seg [ 6 ];
uint16_t real_seg ;
int setup_size , kernel_size , initrd_size , cmdline_size ;
uint32_t initrd_max ;
uint8_t header [ 1024 ];
548
target_phys_addr_t real_addr , prot_addr , cmdline_addr , initrd_addr ;
ths
authored
18 years ago
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
FILE * f , * fi ;
/* Align to 16 bytes as a paranoia measure */
cmdline_size = ( strlen ( kernel_cmdline ) + 16 ) & ~ 15 ;
/* load the kernel header */
f = fopen ( kernel_filename , "rb" );
if ( ! f || ! ( kernel_size = get_file_size ( f )) ||
fread ( header , 1 , 1024 , f ) != 1024 ) {
fprintf ( stderr , "qemu: could not load kernel '%s' \n " ,
kernel_filename );
exit ( 1 );
}
/* kernel protocol version */
564
# if 0
ths
authored
18 years ago
565
fprintf ( stderr , "header magic: %#x \n " , ldl_p ( header + 0x202 ));
566
# endif
ths
authored
18 years ago
567
568
569
570
571
572
573
if ( ldl_p ( header + 0x202 ) == 0x53726448 )
protocol = lduw_p ( header + 0x206 );
else
protocol = 0 ;
if ( protocol < 0x200 || ! ( header [ 0x211 ] & 0x01 )) {
/* Low kernel */
574
575
576
real_addr = 0x90000 ;
cmdline_addr = 0x9a000 - cmdline_size ;
prot_addr = 0x10000 ;
ths
authored
18 years ago
577
578
} else if ( protocol < 0x202 ) {
/* High but ancient kernel */
579
580
581
real_addr = 0x90000 ;
cmdline_addr = 0x9a000 - cmdline_size ;
prot_addr = 0x100000 ;
ths
authored
18 years ago
582
583
} else {
/* High and recent kernel */
584
585
586
real_addr = 0x10000 ;
cmdline_addr = 0x20000 ;
prot_addr = 0x100000 ;
ths
authored
18 years ago
587
588
}
589
# if 0
ths
authored
18 years ago
590
fprintf ( stderr ,
591
592
593
"qemu: real_addr = 0x" TARGET_FMT_plx " \n "
"qemu: cmdline_addr = 0x" TARGET_FMT_plx " \n "
"qemu: prot_addr = 0x" TARGET_FMT_plx " \n " ,
594
595
596
real_addr ,
cmdline_addr ,
prot_addr );
597
# endif
ths
authored
18 years ago
598
599
600
601
602
603
604
605
606
607
608
/* highest address for loading the initrd */
if ( protocol >= 0x203 )
initrd_max = ldl_p ( header + 0x22c );
else
initrd_max = 0x37ffffff ;
if ( initrd_max >= ram_size - ACPI_DATA_SIZE )
initrd_max = ram_size - ACPI_DATA_SIZE - 1 ;
/* kernel command line */
609
pstrcpy_targphys ( cmdline_addr , 4096 , kernel_cmdline );
ths
authored
18 years ago
610
611
if ( protocol >= 0x202 ) {
612
stl_p ( header + 0x228 , cmdline_addr );
ths
authored
18 years ago
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
} else {
stw_p ( header + 0x20 , 0xA33F );
stw_p ( header + 0x22 , cmdline_addr - real_addr );
}
/* loader type */
/* High nybble = B reserved for Qemu ; low nybble is revision number .
If this code is substantially changed , you may want to consider
incrementing the revision . */
if ( protocol >= 0x200 )
header [ 0x210 ] = 0xB0 ;
/* heap */
if ( protocol >= 0x201 ) {
header [ 0x211 ] |= 0x80 ; /* CAN_USE_HEAP */
stw_p ( header + 0x224 , cmdline_addr - real_addr - 0x200 );
}
/* load initrd */
if ( initrd_filename ) {
if ( protocol < 0x200 ) {
fprintf ( stderr , "qemu: linux kernel too old to load a ram disk \n " );
exit ( 1 );
}
fi = fopen ( initrd_filename , "rb" );
if ( ! fi ) {
fprintf ( stderr , "qemu: could not load initial ram disk '%s' \n " ,
initrd_filename );
exit ( 1 );
}
initrd_size = get_file_size ( fi );
646
initrd_addr = ( initrd_max - initrd_size ) & ~ 4095 ;
ths
authored
18 years ago
647
648
649
fprintf ( stderr , "qemu: loading initrd (%#x bytes) at 0x" TARGET_FMT_plx
" \n " , initrd_size , initrd_addr );
ths
authored
18 years ago
650
651
if ( ! fread_targphys_ok ( initrd_addr , initrd_size , fi )) {
ths
authored
18 years ago
652
653
654
655
656
657
fprintf ( stderr , "qemu: read error on initial ram disk '%s' \n " ,
initrd_filename );
exit ( 1 );
}
fclose ( fi );
658
stl_p ( header + 0x218 , initrd_addr );
ths
authored
18 years ago
659
660
661
662
stl_p ( header + 0x21c , initrd_size );
}
/* store the finalized header and load the rest of the kernel */
663
cpu_physical_memory_write ( real_addr , header , 1024 );
ths
authored
18 years ago
664
665
666
667
668
669
670
671
setup_size = header [ 0x1f1 ];
if ( setup_size == 0 )
setup_size = 4 ;
setup_size = ( setup_size + 1 ) * 512 ;
kernel_size -= setup_size ; /* Size of protected-mode code */
672
673
if ( ! fread_targphys_ok ( real_addr + 1024 , setup_size - 1024 , f ) ||
! fread_targphys_ok ( prot_addr , kernel_size , f )) {
ths
authored
18 years ago
674
675
676
677
678
679
680
fprintf ( stderr , "qemu: read error on kernel '%s' \n " ,
kernel_filename );
exit ( 1 );
}
fclose ( f );
/* generate bootsector to set up the initial register state */
681
real_seg = real_addr >> 4 ;
ths
authored
18 years ago
682
683
684
685
686
seg [ 0 ] = seg [ 2 ] = seg [ 3 ] = seg [ 4 ] = seg [ 4 ] = real_seg ;
seg [ 1 ] = real_seg + 0x20 ; /* CS */
memset ( gpr , 0 , sizeof gpr );
gpr [ 4 ] = cmdline_addr - real_addr - 16 ; /* SP (-16 is paranoia) */
687
generate_bootsect ( option_rom , gpr , seg , 0 );
ths
authored
18 years ago
688
689
}
690
691
692
693
694
695
static void main_cpu_reset ( void * opaque )
{
CPUState * env = opaque ;
cpu_reset ( env );
}
696
697
698
699
700
701
static const int ide_iobase [ 2 ] = { 0x1f0 , 0x170 };
static const int ide_iobase2 [ 2 ] = { 0x3f6 , 0x376 };
static const int ide_irq [ 2 ] = { 14 , 15 };
# define NE2000_NB_MAX 6
702
static int ne2000_io [ NE2000_NB_MAX ] = { 0x300 , 0x320 , 0x340 , 0x360 , 0x280 , 0x380 };
703
704
static int ne2000_irq [ NE2000_NB_MAX ] = { 9 , 10 , 11 , 3 , 4 , 5 };
705
706
707
static int serial_io [ MAX_SERIAL_PORTS ] = { 0x3f8 , 0x2f8 , 0x3e8 , 0x2e8 };
static int serial_irq [ MAX_SERIAL_PORTS ] = { 4 , 3 , 4 , 3 };
708
709
710
static int parallel_io [ MAX_PARALLEL_PORTS ] = { 0x378 , 0x278 , 0x3bc };
static int parallel_irq [ MAX_PARALLEL_PORTS ] = { 7 , 7 , 7 };
711
# ifdef HAS_AUDIO
712
static void audio_init ( PCIBus * pci_bus , qemu_irq * pic )
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
{
struct soundhw * c ;
int audio_enabled = 0 ;
for ( c = soundhw ; ! audio_enabled && c -> name ; ++ c ) {
audio_enabled = c -> enabled ;
}
if ( audio_enabled ) {
AudioState * s ;
s = AUD_init ();
if ( s ) {
for ( c = soundhw ; c -> name ; ++ c ) {
if ( c -> enabled ) {
if ( c -> isa ) {
729
c -> init . init_isa ( s , pic );
730
731
732
733
734
735
736
737
738
739
740
741
742
}
else {
if ( pci_bus ) {
c -> init . init_pci ( pci_bus , s );
}
}
}
}
}
}
}
# endif
743
static void pc_init_ne2k_isa ( NICInfo * nd , qemu_irq * pic )
744
745
746
747
748
{
static int nb_ne2k = 0 ;
if ( nb_ne2k == NE2000_NB_MAX )
return ;
749
isa_ne2000_init ( ne2000_io [ nb_ne2k ], pic [ ne2000_irq [ nb_ne2k ]], nd );
750
751
752
nb_ne2k ++ ;
}
753
/* PC hardware initialisation */
754
static void pc_init1 ( ram_addr_t ram_size , int vga_ram_size ,
755
const char * boot_device ,
756
const char * kernel_filename , const char * kernel_cmdline ,
757
const char * initrd_filename ,
758
int pci_enabled , const char * cpu_model )
759
760
{
char buf [ 1024 ];
ths
authored
18 years ago
761
int ret , linux_boot , i ;
762
ram_addr_t ram_addr , vga_ram_addr , bios_offset , vga_bios_offset ;
763
ram_addr_t below_4g_mem_size , above_4g_mem_size = 0 ;
764
int bios_size , isa_bios_size , vga_bios_size ;
765
PCIBus * pci_bus ;
766
int piix3_devfn = - 1 ;
767
CPUState * env ;
768
769
qemu_irq * cpu_irq ;
qemu_irq * i8259 ;
ths
authored
17 years ago
770
771
772
int index ;
BlockDriverState * hd [ MAX_IDE_BUS * MAX_IDE_DEVS ];
BlockDriverState * fd [ MAX_FD ];
773
774
775
776
777
778
779
780
if ( ram_size >= 0xe0000000 ) {
above_4g_mem_size = ram_size - 0xe0000000 ;
below_4g_mem_size = 0xe0000000 ;
} else {
below_4g_mem_size = ram_size ;
}
781
782
linux_boot = ( kernel_filename != NULL );
783
/* init CPUs */
784
785
786
787
788
789
790
791
if ( cpu_model == NULL ) {
# ifdef TARGET_X86_64
cpu_model = "qemu64" ;
# else
cpu_model = "qemu32" ;
# endif
}
792
for ( i = 0 ; i < smp_cpus ; i ++ ) {
793
794
795
796
797
env = cpu_init ( cpu_model );
if ( ! env ) {
fprintf ( stderr , "Unable to find x86 CPU definition \n " );
exit ( 1 );
}
798
if ( i != 0 )
799
env -> halted = 1 ;
800
801
802
803
804
805
806
807
808
809
if ( smp_cpus > 1 ) {
/* XXX: enable it in all cases */
env -> cpuid_features |= CPUID_APIC ;
}
qemu_register_reset ( main_cpu_reset , env );
if ( pci_enabled ) {
apic_init ( env );
}
}
810
811
vmport_init ();
812
/* allocate RAM */
813
814
815
816
817
818
819
820
821
822
823
824
ram_addr = qemu_ram_alloc ( 0xa0000 );
cpu_register_physical_memory ( 0 , 0xa0000 , ram_addr );
/* Allocate , even though we won ' t register , so we don ' t break the
* phys_ram_base + PA assumption . This range includes vga ( 0xa0000 - 0xc0000 ),
* and some bios areas , which will be registered later
*/
ram_addr = qemu_ram_alloc ( 0x100000 - 0xa0000 );
ram_addr = qemu_ram_alloc ( below_4g_mem_size - 0x100000 );
cpu_register_physical_memory ( 0x100000 ,
below_4g_mem_size - 0x100000 ,
ram_addr );
825
826
827
/* above 4giga memory allocation */
if ( above_4g_mem_size > 0 ) {
828
829
ram_addr = qemu_ram_alloc ( above_4g_mem_size );
cpu_register_physical_memory ( 0x100000000ULL ,
830
above_4g_mem_size ,
831
ram_addr );
832
}
833
834
835
836
/* allocate VGA RAM */
vga_ram_addr = qemu_ram_alloc ( vga_ram_size );
837
838
/* BIOS load */
839
840
841
if ( bios_name == NULL )
bios_name = BIOS_FILENAME ;
snprintf ( buf , sizeof ( buf ), "%s/%s" , bios_dir , bios_name );
842
bios_size = get_image_size ( buf );
ths
authored
18 years ago
843
if ( bios_size <= 0 ||
844
( bios_size % 65536 ) != 0 ) {
845
846
goto bios_error ;
}
847
bios_offset = qemu_ram_alloc ( bios_size );
848
849
850
ret = load_image ( buf , phys_ram_base + bios_offset );
if ( ret != bios_size ) {
bios_error :
851
fprintf ( stderr , "qemu: could not load PC BIOS '%s' \n " , buf );
852
853
exit ( 1 );
}
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
if ( cirrus_vga_enabled || std_vga_enabled || vmsvga_enabled ) {
/* VGA BIOS load */
if ( cirrus_vga_enabled ) {
snprintf ( buf , sizeof ( buf ), "%s/%s" , bios_dir , VGABIOS_CIRRUS_FILENAME );
} else {
snprintf ( buf , sizeof ( buf ), "%s/%s" , bios_dir , VGABIOS_FILENAME );
}
vga_bios_size = get_image_size ( buf );
if ( vga_bios_size <= 0 || vga_bios_size > 65536 )
goto vga_bios_error ;
vga_bios_offset = qemu_ram_alloc ( 65536 );
ret = load_image ( buf , phys_ram_base + vga_bios_offset );
if ( ret != vga_bios_size ) {
vga_bios_error :
fprintf ( stderr , "qemu: could not load VGA BIOS '%s' \n " , buf );
exit ( 1 );
}
873
874
875
876
877
/* setup basic memory access */
cpu_register_physical_memory ( 0xc0000 , 0x10000 ,
vga_bios_offset | IO_MEM_ROM );
}
878
879
880
881
882
/* map the last 128KB of the BIOS in ISA space */
isa_bios_size = bios_size ;
if ( isa_bios_size > ( 128 * 1024 ))
isa_bios_size = 128 * 1024 ;
ths
authored
18 years ago
883
884
cpu_register_physical_memory ( 0x100000 - isa_bios_size ,
isa_bios_size ,
885
( bios_offset + bios_size - isa_bios_size ) | IO_MEM_ROM );
ths
authored
18 years ago
886
887
888
889
890
891
{
ram_addr_t option_rom_offset ;
int size , offset ;
offset = 0 ;
892
893
894
895
896
897
898
899
900
if ( linux_boot ) {
option_rom_offset = qemu_ram_alloc ( TARGET_PAGE_SIZE );
load_linux ( phys_ram_base + option_rom_offset ,
kernel_filename , initrd_filename , kernel_cmdline );
cpu_register_physical_memory ( 0xd0000 , TARGET_PAGE_SIZE ,
option_rom_offset | IO_MEM_ROM );
offset = TARGET_PAGE_SIZE ;
}
901
902
903
for ( i = 0 ; i < nb_option_roms ; i ++ ) {
size = get_image_size ( option_rom [ i ]);
if ( size < 0 ) {
ths
authored
18 years ago
904
fprintf ( stderr , "Could not load option rom '%s' \n " ,
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
option_rom [ i ]);
exit ( 1 );
}
if ( size > ( 0x10000 - offset ))
goto option_rom_error ;
option_rom_offset = qemu_ram_alloc ( size );
ret = load_image ( option_rom [ i ], phys_ram_base + option_rom_offset );
if ( ret != size ) {
option_rom_error :
fprintf ( stderr , "Too many option ROMS \n " );
exit ( 1 );
}
size = ( size + 4095 ) & ~ 4095 ;
cpu_register_physical_memory ( 0xd0000 + offset ,
size , option_rom_offset | IO_MEM_ROM );
offset += size ;
}
ths
authored
18 years ago
922
923
}
924
/* map all the bios at the top of memory */
ths
authored
18 years ago
925
cpu_register_physical_memory (( uint32_t )( - bios_size ),
926
bios_size , bios_offset | IO_MEM_ROM );
ths
authored
18 years ago
927
928
929
bochs_bios_init ();
930
cpu_irq = qemu_allocate_irqs ( pic_irq_request , NULL , 1 );
931
932
933
i8259 = i8259_init ( cpu_irq [ 0 ]);
ferr_irq = i8259 [ 13 ];
934
if ( pci_enabled ) {
935
pci_bus = i440fx_init ( & i440fx_state , i8259 );
ths
authored
18 years ago
936
piix3_devfn = piix3_init ( pci_bus , - 1 );
937
938
} else {
pci_bus = NULL ;
939
940
}
941
/* init basic PC hardware */
942
register_ioport_write ( 0x80 , 1 , 1 , ioport80_write , NULL );
943
944
945
register_ioport_write ( 0xf0 , 1 , 1 , ioportF0_write , NULL );
946
947
if ( cirrus_vga_enabled ) {
if ( pci_enabled ) {
ths
authored
18 years ago
948
pci_cirrus_vga_init ( pci_bus ,
949
phys_ram_base + vga_ram_addr ,
950
vga_ram_addr , vga_ram_size );
951
} else {
952
isa_cirrus_vga_init ( phys_ram_base + vga_ram_addr ,
953
vga_ram_addr , vga_ram_size );
954
}
ths
authored
18 years ago
955
956
} else if ( vmsvga_enabled ) {
if ( pci_enabled )
957
pci_vmsvga_init ( pci_bus , phys_ram_base + vga_ram_addr ,
958
vga_ram_addr , vga_ram_size );
ths
authored
18 years ago
959
960
else
fprintf ( stderr , "%s: vmware_vga: no PCI bus \n " , __FUNCTION__ );
961
} else if ( std_vga_enabled ) {
962
if ( pci_enabled ) {
963
pci_vga_init ( pci_bus , phys_ram_base + vga_ram_addr ,
964
vga_ram_addr , vga_ram_size , 0 , 0 );
965
} else {
966
isa_vga_init ( phys_ram_base + vga_ram_addr ,
967
vga_ram_addr , vga_ram_size );
968
}
969
}
970
971
rtc_state = rtc_init ( 0x70 , i8259 [ 8 ], 2000 );
972
973
974
qemu_register_boot_set ( pc_boot_set , rtc_state );
975
976
977
register_ioport_read ( 0x92 , 1 , 1 , ioport92_read , NULL );
register_ioport_write ( 0x92 , 1 , 1 , ioport92_write , NULL );
978
979
980
if ( pci_enabled ) {
ioapic = ioapic_init ();
}
981
pit = pit_init ( 0x40 , i8259 [ 0 ]);
982
pcspk_init ( pit );
983
984
985
if ( ! no_hpet ) {
hpet_init ( i8259 );
}
986
987
988
if ( pci_enabled ) {
pic_set_alt_irq_func ( isa_pic , ioapic_set_irq , ioapic );
}
989
990
991
for ( i = 0 ; i < MAX_SERIAL_PORTS ; i ++ ) {
if ( serial_hds [ i ]) {
992
993
serial_init ( serial_io [ i ], i8259 [ serial_irq [ i ]], 115200 ,
serial_hds [ i ]);
994
995
}
}
996
997
998
for ( i = 0 ; i < MAX_PARALLEL_PORTS ; i ++ ) {
if ( parallel_hds [ i ]) {
999
1000
parallel_init ( parallel_io [ i ], i8259 [ parallel_irq [ i ]],
parallel_hds [ i ]);
1001
1002
1003
}
}
1004
for ( i = 0 ; i < nb_nics ; i ++ ) {
1005
1006
1007
NICInfo * nd = & nd_table [ i ];
if ( ! pci_enabled || ( nd -> model && strcmp ( nd -> model , "ne2k_isa" ) == 0 ))
1008
pc_init_ne2k_isa ( nd , i8259 );
1009
1010
else
pci_nic_init ( pci_bus , nd , - 1 , "ne2k_pci" );
1011
}
1012
ths
authored
17 years ago
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
if ( drive_get_max_bus ( IF_IDE ) >= MAX_IDE_BUS ) {
fprintf ( stderr , "qemu: too many IDE bus \n " );
exit ( 1 );
}
for ( i = 0 ; i < MAX_IDE_BUS * MAX_IDE_DEVS ; i ++ ) {
index = drive_get_index ( IF_IDE , i / MAX_IDE_DEVS , i % MAX_IDE_DEVS );
if ( index != - 1 )
hd [ i ] = drives_table [ index ]. bdrv ;
else
hd [ i ] = NULL ;
}
1026
if ( pci_enabled ) {
ths
authored
17 years ago
1027
pci_piix3_ide_init ( pci_bus , hd , piix3_devfn + 1 , i8259 );
1028
} else {
ths
authored
17 years ago
1029
for ( i = 0 ; i < MAX_IDE_BUS ; i ++ ) {
1030
isa_ide_init ( ide_iobase [ i ], ide_iobase2 [ i ], i8259 [ ide_irq [ i ]],
ths
authored
17 years ago
1031
hd [ MAX_IDE_DEVS * i ], hd [ MAX_IDE_DEVS * i + 1 ]);
1032
}
1033
}
1034
1035
i8042_init ( i8259 [ 1 ], i8259 [ 12 ], 0x60 );
1036
DMA_init ( 0 );
1037
# ifdef HAS_AUDIO
1038
audio_init ( pci_enabled ? pci_bus : NULL , i8259 );
1039
# endif
1040
ths
authored
17 years ago
1041
1042
1043
1044
1045
1046
1047
1048
for ( i = 0 ; i < MAX_FD ; i ++ ) {
index = drive_get_index ( IF_FLOPPY , 0 , i );
if ( index != - 1 )
fd [ i ] = drives_table [ index ]. bdrv ;
else
fd [ i ] = NULL ;
}
floppy_controller = fdctrl_init ( i8259 [ 6 ], 2 , 0 , 0x3f0 , fd );
1049
1050
cmos_init ( below_4g_mem_size , above_4g_mem_size , boot_device , hd );
1051
1052
if ( pci_enabled && usb_enabled ) {
ths
authored
18 years ago
1053
usb_uhci_piix3_init ( pci_bus , piix3_devfn + 2 );
1054
1055
}
1056
if ( pci_enabled && acpi_enabled ) {
ths
authored
18 years ago
1057
uint8_t * eeprom_buf = qemu_mallocz ( 8 * 256 ); /* XXX: make this persistent */
1058
1059
1060
i2c_bus * smbus ;
/* TODO: Populate SPD eeprom data. */
1061
smbus = piix4_pm_init ( pci_bus , piix3_devfn + 3 , 0xb100 , i8259 [ 9 ]);
ths
authored
18 years ago
1062
for ( i = 0 ; i < 8 ; i ++ ) {
1063
smbus_eeprom_device_init ( smbus , 0x50 + i , eeprom_buf + ( i * 256 ));
ths
authored
18 years ago
1064
}
1065
}
ths
authored
18 years ago
1066
1067
1068
1069
if ( i440fx_state ) {
i440fx_init_memory_mappings ( i440fx_state );
}
ths
authored
17 years ago
1070
1071
if ( pci_enabled ) {
ths
authored
17 years ago
1072
1073
int max_bus ;
int bus , unit ;
1074
void * scsi ;
ths
authored
18 years ago
1075
ths
authored
17 years ago
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
max_bus = drive_get_max_bus ( IF_SCSI );
for ( bus = 0 ; bus <= max_bus ; bus ++ ) {
scsi = lsi_scsi_init ( pci_bus , - 1 );
for ( unit = 0 ; unit < LSI_MAX_DEVS ; unit ++ ) {
index = drive_get_index ( IF_SCSI , bus , unit );
if ( index == - 1 )
continue ;
lsi_scsi_attach ( scsi , drives_table [ index ]. bdrv , unit );
}
}
1087
}
1088
1089
1090
1091
1092
1093
1094
/* Add virtio block devices */
if ( pci_enabled ) {
int index ;
int unit_id = 0 ;
while (( index = drive_get_index ( IF_VIRTIO , 0 , unit_id )) != - 1 ) {
1095
virtio_blk_init ( pci_bus , drives_table [ index ]. bdrv );
1096
1097
1098
unit_id ++ ;
}
}
1099
1100
1101
1102
/* Add virtio balloon device */
if ( pci_enabled )
virtio_balloon_init ( pci_bus );
1103
1104
1105
1106
1107
1108
1109
1110
/* Add virtio console devices */
if ( pci_enabled ) {
for ( i = 0 ; i < MAX_VIRTIO_CONSOLES ; i ++ ) {
if ( virtcon_hds [ i ])
virtio_console_init ( pci_bus , virtcon_hds [ i ]);
}
}
1111
}
1112
1113
static void pc_init_pci ( ram_addr_t ram_size , int vga_ram_size ,
1114
const char * boot_device ,
ths
authored
18 years ago
1115
const char * kernel_filename ,
1116
const char * kernel_cmdline ,
1117
1118
const char * initrd_filename ,
const char * cpu_model )
1119
{
1120
pc_init1 ( ram_size , vga_ram_size , boot_device ,
1121
kernel_filename , kernel_cmdline ,
1122
initrd_filename , 1 , cpu_model );
1123
1124
}
1125
static void pc_init_isa ( ram_addr_t ram_size , int vga_ram_size ,
1126
const char * boot_device ,
ths
authored
18 years ago
1127
const char * kernel_filename ,
1128
const char * kernel_cmdline ,
1129
1130
const char * initrd_filename ,
const char * cpu_model )
1131
{
1132
pc_init1 ( ram_size , vga_ram_size , boot_device ,
1133
kernel_filename , kernel_cmdline ,
1134
initrd_filename , 0 , cpu_model );
1135
1136
}
1137
1138
1139
1140
1141
1142
1143
1144
/* set CMOS shutdown status register ( index 0xF ) as S3_resume ( 0xFE )
BIOS will read it and start S3 resume at POST Entry */
void cmos_set_s3_resume ( void )
{
if ( rtc_state )
rtc_set_memory ( rtc_state , 0xF , 0xFE );
}
1145
QEMUMachine pc_machine = {
1146
1147
1148
1149
. name = "pc" ,
. desc = "Standard PC" ,
. init = pc_init_pci ,
. ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE ,
1150
. max_cpus = 255 ,
1151
1152
1153
};
QEMUMachine isapc_machine = {
1154
1155
1156
1157
. name = "isapc" ,
. desc = "ISA-only PC" ,
. init = pc_init_isa ,
. ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE ,
1158
. max_cpus = 1 ,
1159
};