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Merge branch 'qemu-cvs'
[qemu-kvm/fedora.git] / hw / pc.c
blob6334c769bf1752e5e917332fb7c661d5add493c8
1 /*
2 * QEMU PC System Emulator
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "hw.h"
25 #include "pc.h"
26 #include "fdc.h"
27 #include "pci.h"
28 #include "block.h"
29 #include "sysemu.h"
30 #include "audio/audio.h"
31 #include "net.h"
32 #include "smbus.h"
33 #include "boards.h"
34 #include "console.h"
35
36 #include "qemu-kvm.h"
37
38 /* output Bochs bios info messages */
39 //#define DEBUG_BIOS
40
41 #define BIOS_FILENAME "bios.bin"
42 #define VGABIOS_FILENAME "vgabios.bin"
43 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
44 #define EXTBOOT_FILENAME "extboot.bin"
45
46 #define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
47
48 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
49 #define ACPI_DATA_SIZE 0x10000
50
51 #define MAX_IDE_BUS 2
52
53 static fdctrl_t *floppy_controller;
54 static RTCState *rtc_state;
55 static PITState *pit;
56 static IOAPICState *ioapic;
57 static PCIDevice *i440fx_state;
58
59 static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
60 {
61 }
62
63 /* MSDOS compatibility mode FPU exception support */
64 static qemu_irq ferr_irq;
65 /* XXX: add IGNNE support */
66 void cpu_set_ferr(CPUX86State *s)
67 {
68 qemu_irq_raise(ferr_irq);
69 }
70
71 static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
72 {
73 qemu_irq_lower(ferr_irq);
74 }
75
76 /* TSC handling */
77 uint64_t cpu_get_tsc(CPUX86State *env)
78 {
79 /* Note: when using kqemu, it is more logical to return the host TSC
80 because kqemu does not trap the RDTSC instruction for
81 performance reasons */
82 #if USE_KQEMU
83 if (env->kqemu_enabled) {
84 return cpu_get_real_ticks();
85 } else
86 #endif
87 {
88 return cpu_get_ticks();
89 }
90 }
91
92 /* SMM support */
93 void cpu_smm_update(CPUState *env)
94 {
95 if (i440fx_state && env == first_cpu)
96 i440fx_set_smm(i440fx_state, (env->hflags >> HF_SMM_SHIFT) & 1);
97 }
98
99
100 /* IRQ handling */
101 int cpu_get_pic_interrupt(CPUState *env)
102 {
103 int intno;
104
105 intno = apic_get_interrupt(env);
106 if (intno >= 0) {
107 /* set irq request if a PIC irq is still pending */
108 /* XXX: improve that */
109 pic_update_irq(isa_pic);
110 return intno;
111 }
112 /* read the irq from the PIC */
113 if (!apic_accept_pic_intr(env))
114 return -1;
115
116 intno = pic_read_irq(isa_pic);
117 return intno;
118 }
119
120 static void pic_irq_request(void *opaque, int irq, int level)
121 {
122 CPUState *env = first_cpu;
123
124 if (!level)
125 return;
126
127 while (env) {
128 if (apic_accept_pic_intr(env))
129 apic_local_deliver(env, APIC_LINT0);
130 env = env->next_cpu;
131 }
132 }
133
134 /* PC cmos mappings */
135
136 #define REG_EQUIPMENT_BYTE 0x14
137
138 static int cmos_get_fd_drive_type(int fd0)
139 {
140 int val;
141
142 switch (fd0) {
143 case 0:
144 /* 1.44 Mb 3"5 drive */
145 val = 4;
146 break;
147 case 1:
148 /* 2.88 Mb 3"5 drive */
149 val = 5;
150 break;
151 case 2:
152 /* 1.2 Mb 5"5 drive */
153 val = 2;
154 break;
155 default:
156 val = 0;
157 break;
158 }
159 return val;
160 }
161
162 static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
163 {
164 RTCState *s = rtc_state;
165 int cylinders, heads, sectors;
166 bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
167 rtc_set_memory(s, type_ofs, 47);
168 rtc_set_memory(s, info_ofs, cylinders);
169 rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
170 rtc_set_memory(s, info_ofs + 2, heads);
171 rtc_set_memory(s, info_ofs + 3, 0xff);
172 rtc_set_memory(s, info_ofs + 4, 0xff);
173 rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
174 rtc_set_memory(s, info_ofs + 6, cylinders);
175 rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
176 rtc_set_memory(s, info_ofs + 8, sectors);
177 }
178
179 /* convert boot_device letter to something recognizable by the bios */
180 static int boot_device2nibble(char boot_device)
181 {
182 switch(boot_device) {
183 case 'a':
184 case 'b':
185 return 0x01; /* floppy boot */
186 case 'c':
187 return 0x02; /* hard drive boot */
188 case 'd':
189 return 0x03; /* CD-ROM boot */
190 case 'n':
191 return 0x04; /* Network boot */
192 }
193 return 0;
194 }
195
196 /* copy/pasted from cmos_init, should be made a general function
197 and used there as well */
198 static int pc_boot_set(void *opaque, const char *boot_device)
199 {
200 #define PC_MAX_BOOT_DEVICES 3
201 RTCState *s = (RTCState *)opaque;
202 int nbds, bds[3] = { 0, };
203 int i;
204
205 nbds = strlen(boot_device);
206 if (nbds > PC_MAX_BOOT_DEVICES) {
207 term_printf("Too many boot devices for PC\n");
208 return(1);
209 }
210 for (i = 0; i < nbds; i++) {
211 bds[i] = boot_device2nibble(boot_device[i]);
212 if (bds[i] == 0) {
213 term_printf("Invalid boot device for PC: '%c'\n",
214 boot_device[i]);
215 return(1);
216 }
217 }
218 rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
219 rtc_set_memory(s, 0x38, (bds[2] << 4));
220 return(0);
221 }
222
223 /* hd_table must contain 4 block drivers */
224 static void cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
225 const char *boot_device, BlockDriverState **hd_table,
226 int smp_cpus)
227 {
228 RTCState *s = rtc_state;
229 int nbds, bds[3] = { 0, };
230 int val;
231 int fd0, fd1, nb;
232 int i;
233
234 /* various important CMOS locations needed by PC/Bochs bios */
235
236 /* memory size */
237 val = 640; /* base memory in K */
238 rtc_set_memory(s, 0x15, val);
239 rtc_set_memory(s, 0x16, val >> 8);
240
241 val = (ram_size / 1024) - 1024;
242 if (val > 65535)
243 val = 65535;
244 rtc_set_memory(s, 0x17, val);
245 rtc_set_memory(s, 0x18, val >> 8);
246 rtc_set_memory(s, 0x30, val);
247 rtc_set_memory(s, 0x31, val >> 8);
248
249 if (above_4g_mem_size) {
250 rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16);
251 rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24);
252 rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32);
253 }
254 rtc_set_memory(s, 0x5f, smp_cpus - 1);
255
256 if (ram_size > (16 * 1024 * 1024))
257 val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
258 else
259 val = 0;
260 if (val > 65535)
261 val = 65535;
262 rtc_set_memory(s, 0x34, val);
263 rtc_set_memory(s, 0x35, val >> 8);
264
265 /* set the number of CPU */
266 rtc_set_memory(s, 0x5f, smp_cpus - 1);
267
268 /* set boot devices, and disable floppy signature check if requested */
269 #define PC_MAX_BOOT_DEVICES 3
270 nbds = strlen(boot_device);
271 if (nbds > PC_MAX_BOOT_DEVICES) {
272 fprintf(stderr, "Too many boot devices for PC\n");
273 exit(1);
274 }
275 for (i = 0; i < nbds; i++) {
276 bds[i] = boot_device2nibble(boot_device[i]);
277 if (bds[i] == 0) {
278 fprintf(stderr, "Invalid boot device for PC: '%c'\n",
279 boot_device[i]);
280 exit(1);
281 }
282 }
283 rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
284 rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1));
285
286 /* floppy type */
287
288 fd0 = fdctrl_get_drive_type(floppy_controller, 0);
289 fd1 = fdctrl_get_drive_type(floppy_controller, 1);
290
291 val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
292 rtc_set_memory(s, 0x10, val);
293
294 val = 0;
295 nb = 0;
296 if (fd0 < 3)
297 nb++;
298 if (fd1 < 3)
299 nb++;
300 switch (nb) {
301 case 0:
302 break;
303 case 1:
304 val |= 0x01; /* 1 drive, ready for boot */
305 break;
306 case 2:
307 val |= 0x41; /* 2 drives, ready for boot */
308 break;
309 }
310 val |= 0x02; /* FPU is there */
311 val |= 0x04; /* PS/2 mouse installed */
312 rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
313
314 /* hard drives */
315
316 rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
317 if (hd_table[0])
318 cmos_init_hd(0x19, 0x1b, hd_table[0]);
319 if (hd_table[1])
320 cmos_init_hd(0x1a, 0x24, hd_table[1]);
321
322 val = 0;
323 for (i = 0; i < 4; i++) {
324 if (hd_table[i]) {
325 int cylinders, heads, sectors, translation;
326 /* NOTE: bdrv_get_geometry_hint() returns the physical
327 geometry. It is always such that: 1 <= sects <= 63, 1
328 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
329 geometry can be different if a translation is done. */
330 translation = bdrv_get_translation_hint(hd_table[i]);
331 if (translation == BIOS_ATA_TRANSLATION_AUTO) {
332 bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
333 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
334 /* No translation. */
335 translation = 0;
336 } else {
337 /* LBA translation. */
338 translation = 1;
339 }
340 } else {
341 translation--;
342 }
343 val |= translation << (i * 2);
344 }
345 }
346 rtc_set_memory(s, 0x39, val);
347 }
348
349 void ioport_set_a20(int enable)
350 {
351 /* XXX: send to all CPUs ? */
352 cpu_x86_set_a20(first_cpu, enable);
353 }
354
355 int ioport_get_a20(void)
356 {
357 return ((first_cpu->a20_mask >> 20) & 1);
358 }
359
360 static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
361 {
362 ioport_set_a20((val >> 1) & 1);
363 /* XXX: bit 0 is fast reset */
364 }
365
366 static uint32_t ioport92_read(void *opaque, uint32_t addr)
367 {
368 return ioport_get_a20() << 1;
369 }
370
371 /***********************************************************/
372 /* Bochs BIOS debug ports */
373
374 static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
375 {
376 static const char shutdown_str[8] = "Shutdown";
377 static int shutdown_index = 0;
378
379 switch(addr) {
380 /* Bochs BIOS messages */
381 case 0x400:
382 case 0x401:
383 fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
384 exit(1);
385 case 0x402:
386 case 0x403:
387 #ifdef DEBUG_BIOS
388 fprintf(stderr, "%c", val);
389 #endif
390 break;
391 case 0x8900:
392 /* same as Bochs power off */
393 if (val == shutdown_str[shutdown_index]) {
394 shutdown_index++;
395 if (shutdown_index == 8) {
396 shutdown_index = 0;
397 qemu_system_shutdown_request();
398 }
399 } else {
400 shutdown_index = 0;
401 }
402 break;
403
404 /* LGPL'ed VGA BIOS messages */
405 case 0x501:
406 case 0x502:
407 fprintf(stderr, "VGA BIOS panic, line %d\n", val);
408 exit(1);
409 case 0x500:
410 case 0x503:
411 #ifdef DEBUG_BIOS
412 fprintf(stderr, "%c", val);
413 #endif
414 break;
415 }
416 }
417
418 static void bochs_bios_init(void)
419 {
420 register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
421 register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
422 register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
423 register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
424 register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
425
426 register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
427 register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
428 register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
429 register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
430 }
431
432 /* Generate an initial boot sector which sets state and jump to
433 a specified vector */
434 static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
435 {
436 uint8_t bootsect[512], *p;
437 int i;
438 int hda = extboot_drive;
439
440 if (hda == -1)
441 hda = drive_get_index(IF_IDE, 0, 0);
442 if (hda == -1) {
443 fprintf(stderr, "-hda or -drive boot=on must be given when booting "
444 "a Linux kernel\n");
445 exit(1);
446 }
447
448 memset(bootsect, 0, sizeof(bootsect));
449
450 /* Copy the MSDOS partition table if possible */
451 bdrv_read(drives_table[hda].bdrv, 0, bootsect, 1);
452
453 /* Make sure we have a partition signature */
454 bootsect[510] = 0x55;
455 bootsect[511] = 0xaa;
456
457 /* Actual code */
458 p = bootsect;
459 *p++ = 0xfa; /* CLI */
460 *p++ = 0xfc; /* CLD */
461
462 for (i = 0; i < 6; i++) {
463 if (i == 1) /* Skip CS */
464 continue;
465
466 *p++ = 0xb8; /* MOV AX,imm16 */
467 *p++ = segs[i];
468 *p++ = segs[i] >> 8;
469 *p++ = 0x8e; /* MOV <seg>,AX */
470 *p++ = 0xc0 + (i << 3);
471 }
472
473 for (i = 0; i < 8; i++) {
474 *p++ = 0x66; /* 32-bit operand size */
475 *p++ = 0xb8 + i; /* MOV <reg>,imm32 */
476 *p++ = gpr[i];
477 *p++ = gpr[i] >> 8;
478 *p++ = gpr[i] >> 16;
479 *p++ = gpr[i] >> 24;
480 }
481
482 *p++ = 0xea; /* JMP FAR */
483 *p++ = ip; /* IP */
484 *p++ = ip >> 8;
485 *p++ = segs[1]; /* CS */
486 *p++ = segs[1] >> 8;
487
488 bdrv_set_boot_sector(drives_table[hda].bdrv, bootsect, sizeof(bootsect));
489 }
490
491 static long get_file_size(FILE *f)
492 {
493 long where, size;
494
495 /* XXX: on Unix systems, using fstat() probably makes more sense */
496
497 where = ftell(f);
498 fseek(f, 0, SEEK_END);
499 size = ftell(f);
500 fseek(f, where, SEEK_SET);
501
502 return size;
503 }
504
505 static void load_linux(const char *kernel_filename,
506 const char *initrd_filename,
507 const char *kernel_cmdline)
508 {
509 uint16_t protocol;
510 uint32_t gpr[8];
511 uint16_t seg[6];
512 uint16_t real_seg;
513 int setup_size, kernel_size, initrd_size, cmdline_size;
514 uint32_t initrd_max;
515 uint8_t header[1024];
516 target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr;
517 FILE *f, *fi;
518
519 /* Align to 16 bytes as a paranoia measure */
520 cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
521
522 /* load the kernel header */
523 f = fopen(kernel_filename, "rb");
524 if (!f || !(kernel_size = get_file_size(f)) ||
525 fread(header, 1, 1024, f) != 1024) {
526 fprintf(stderr, "qemu: could not load kernel '%s'\n",
527 kernel_filename);
528 exit(1);
529 }
530
531 /* kernel protocol version */
532 #if 0
533 fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
534 #endif
535 if (ldl_p(header+0x202) == 0x53726448)
536 protocol = lduw_p(header+0x206);
537 else
538 protocol = 0;
539
540 if (protocol < 0x200 || !(header[0x211] & 0x01)) {
541 /* Low kernel */
542 real_addr = 0x90000;
543 cmdline_addr = 0x9a000 - cmdline_size;
544 prot_addr = 0x10000;
545 } else if (protocol < 0x202) {
546 /* High but ancient kernel */
547 real_addr = 0x90000;
548 cmdline_addr = 0x9a000 - cmdline_size;
549 prot_addr = 0x100000;
550 } else {
551 /* High and recent kernel */
552 real_addr = 0x10000;
553 cmdline_addr = 0x20000;
554 prot_addr = 0x100000;
555 }
556
557 #if 0
558 fprintf(stderr,
559 "qemu: real_addr = %#zx\n"
560 "qemu: cmdline_addr = %#zx\n"
561 "qemu: prot_addr = %#zx\n",
562 real_addr,
563 cmdline_addr,
564 prot_addr);
565 #endif
566
567 /* highest address for loading the initrd */
568 if (protocol >= 0x203)
569 initrd_max = ldl_p(header+0x22c);
570 else
571 initrd_max = 0x37ffffff;
572
573 if (initrd_max >= ram_size-ACPI_DATA_SIZE)
574 initrd_max = ram_size-ACPI_DATA_SIZE-1;
575
576 /* kernel command line */
577 pstrcpy_targphys(cmdline_addr, 4096, kernel_cmdline);
578
579 if (protocol >= 0x202) {
580 stl_p(header+0x228, cmdline_addr);
581 } else {
582 stw_p(header+0x20, 0xA33F);
583 stw_p(header+0x22, cmdline_addr-real_addr);
584 }
585
586 /* loader type */
587 /* High nybble = B reserved for Qemu; low nybble is revision number.
588 If this code is substantially changed, you may want to consider
589 incrementing the revision. */
590 if (protocol >= 0x200)
591 header[0x210] = 0xB0;
592
593 /* heap */
594 if (protocol >= 0x201) {
595 header[0x211] |= 0x80; /* CAN_USE_HEAP */
596 stw_p(header+0x224, cmdline_addr-real_addr-0x200);
597 }
598
599 /* load initrd */
600 if (initrd_filename) {
601 if (protocol < 0x200) {
602 fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
603 exit(1);
604 }
605
606 fi = fopen(initrd_filename, "rb");
607 if (!fi) {
608 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
609 initrd_filename);
610 exit(1);
611 }
612
613 initrd_size = get_file_size(fi);
614 initrd_addr = (initrd_max-initrd_size) & ~4095;
615
616 fprintf(stderr, "qemu: loading initrd (%#x bytes) at %#zx\n",
617 initrd_size, initrd_addr);
618
619 if (!fread_targphys_ok(initrd_addr, initrd_size, fi)) {
620 fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
621 initrd_filename);
622 exit(1);
623 }
624 fclose(fi);
625
626 stl_p(header+0x218, initrd_addr);
627 stl_p(header+0x21c, initrd_size);
628 }
629
630 /* store the finalized header and load the rest of the kernel */
631 cpu_physical_memory_write(real_addr, header, 1024);
632
633 setup_size = header[0x1f1];
634 if (setup_size == 0)
635 setup_size = 4;
636
637 setup_size = (setup_size+1)*512;
638 kernel_size -= setup_size; /* Size of protected-mode code */
639
640 if (!fread_targphys_ok(real_addr+1024, setup_size-1024, f) ||
641 !fread_targphys_ok(prot_addr, kernel_size, f)) {
642 fprintf(stderr, "qemu: read error on kernel '%s'\n",
643 kernel_filename);
644 exit(1);
645 }
646 fclose(f);
647
648 /* generate bootsector to set up the initial register state */
649 real_seg = real_addr >> 4;
650 seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg;
651 seg[1] = real_seg+0x20; /* CS */
652 memset(gpr, 0, sizeof gpr);
653 gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */
654
655 generate_bootsect(gpr, seg, 0);
656 }
657
658 static void main_cpu_reset(void *opaque)
659 {
660 CPUState *env = opaque;
661 cpu_reset(env);
662 }
663
664 static const int ide_iobase[2] = { 0x1f0, 0x170 };
665 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
666 static const int ide_irq[2] = { 14, 15 };
667
668 #define NE2000_NB_MAX 6
669
670 static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
671 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
672
673 static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
674 static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
675
676 static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
677 static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
678
679 #ifdef HAS_AUDIO
680 static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
681 {
682 struct soundhw *c;
683 int audio_enabled = 0;
684
685 for (c = soundhw; !audio_enabled && c->name; ++c) {
686 audio_enabled = c->enabled;
687 }
688
689 if (audio_enabled) {
690 AudioState *s;
691
692 s = AUD_init ();
693 if (s) {
694 for (c = soundhw; c->name; ++c) {
695 if (c->enabled) {
696 if (c->isa) {
697 c->init.init_isa (s, pic);
698 }
699 else {
700 if (pci_bus) {
701 c->init.init_pci (pci_bus, s);
702 }
703 }
704 }
705 }
706 }
707 }
708 }
709 #endif
710
711 static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic)
712 {
713 static int nb_ne2k = 0;
714
715 if (nb_ne2k == NE2000_NB_MAX)
716 return;
717 isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd);
718 nb_ne2k++;
719 }
720
721 static int load_option_rom(const char *filename, int offset)
722 {
723 ram_addr_t option_rom_offset;
724 int size, ret;
725
726 size = get_image_size(filename);
727 if (size < 0) {
728 fprintf(stderr, "Could not load option rom '%s'\n", filename);
729 exit(1);
730 }
731 if (size > (0x10000 - offset))
732 goto option_rom_error;
733 option_rom_offset = qemu_ram_alloc(size);
734 ret = load_image(filename, phys_ram_base + option_rom_offset);
735 if (ret != size) {
736 option_rom_error:
737 fprintf(stderr, "Too many option ROMS\n");
738 exit(1);
739 }
740 size = (size + 4095) & ~4095;
741 cpu_register_physical_memory(0xd0000 + offset,
742 size, option_rom_offset | IO_MEM_ROM);
743 if (kvm_enabled())
744 kvm_cpu_register_physical_memory(0xd0000 + offset,
745 size, option_rom_offset |
746 IO_MEM_ROM);
747 return size;
748 }
749
750 CPUState *pc_new_cpu(int cpu, const char *cpu_model, int pci_enabled)
751 {
752 CPUState *env = cpu_init(cpu_model);
753 if (!env) {
754 fprintf(stderr, "Unable to find x86 CPU definition\n");
755 exit(1);
756 }
757 if (cpu != 0)
758 env->halted = 1;
759 if (smp_cpus > 1) {
760 /* XXX: enable it in all cases */
761 env->cpuid_features |= CPUID_APIC;
762 }
763 register_savevm("cpu", cpu, 5, cpu_save, cpu_load, env);
764 qemu_register_reset(main_cpu_reset, env);
765 if (pci_enabled) {
766 apic_init(env);
767 }
768 return env;
769 }
770
771 /* PC hardware initialisation */
772 static void pc_init1(ram_addr_t ram_size, int vga_ram_size,
773 const char *boot_device, DisplayState *ds,
774 const char *kernel_filename, const char *kernel_cmdline,
775 const char *initrd_filename,
776 int pci_enabled, const char *cpu_model)
777 {
778 char buf[1024];
779 int ret, linux_boot, i;
780 ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset;
781 ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
782 int bios_size, isa_bios_size, vga_bios_size, opt_rom_offset;
783 PCIBus *pci_bus;
784 int piix3_devfn = -1;
785 CPUState *env;
786 NICInfo *nd;
787 qemu_irq *cpu_irq;
788 qemu_irq *i8259;
789 int index;
790 BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
791 BlockDriverState *fd[MAX_FD];
792
793 if (ram_size >= 0xe0000000 ) {
794 above_4g_mem_size = ram_size - 0xe0000000;
795 below_4g_mem_size = 0xe0000000;
796 } else {
797 below_4g_mem_size = ram_size;
798 }
799
800 linux_boot = (kernel_filename != NULL);
801
802 /* init CPUs */
803 if (cpu_model == NULL) {
804 #ifdef TARGET_X86_64
805 cpu_model = "qemu64";
806 #else
807 cpu_model = "qemu32";
808 #endif
809 }
810
811 for(i = 0; i < smp_cpus; i++) {
812 env = pc_new_cpu(i, cpu_model, pci_enabled);
813 }
814
815 vmport_init();
816
817 /* allocate RAM */
818 #ifdef KVM_CAP_USER_MEMORY
819 if (kvm_enabled() && kvm_qemu_check_extension(KVM_CAP_USER_MEMORY)) {
820 ram_addr = qemu_ram_alloc(0xa0000);
821 cpu_register_physical_memory(0, 0xa0000, ram_addr);
822 kvm_cpu_register_physical_memory(0, 0xa0000, ram_addr);
823
824 ram_addr = qemu_ram_alloc(0x100000 - 0xa0000); // hole
825 ram_addr = qemu_ram_alloc(below_4g_mem_size - 0x100000);
826 cpu_register_physical_memory(0x100000,
827 below_4g_mem_size - 0x100000,
828 ram_addr);
829 kvm_cpu_register_physical_memory(0x100000,
830 below_4g_mem_size - 0x100000,
831 ram_addr);
832 /* above 4giga memory allocation */
833 if (above_4g_mem_size > 0) {
834 ram_addr = qemu_ram_alloc(above_4g_mem_size);
835 if (hpagesize) {
836 if (ram_addr & (hpagesize-1)) {
837 unsigned long aligned_addr;
838 aligned_addr = (ram_addr + hpagesize - 1) &
839 ~(hpagesize-1);
840 qemu_ram_alloc(aligned_addr - ram_addr);
841 ram_addr = aligned_addr;
842 }
843 }
844 cpu_register_physical_memory(0x100000000ULL,
845 above_4g_mem_size,
846 ram_addr);
847 kvm_cpu_register_physical_memory(0x100000000ULL,
848 above_4g_mem_size,
849 ram_addr);
850 }
851 } else
852 #endif
853 {
854 ram_addr = qemu_ram_alloc(ram_size);
855 cpu_register_physical_memory(0, below_4g_mem_size, ram_addr);
856 /* above 4giga memory allocation */
857 if (above_4g_mem_size > 0) {
858 cpu_register_physical_memory(0x100000000ULL, above_4g_mem_size,
859 ram_addr + below_4g_mem_size);
860 }
861 }
862 /* allocate VGA RAM */
863 vga_ram_addr = qemu_ram_alloc(vga_ram_size);
864
865 /* BIOS load */
866 if (bios_name == NULL)
867 bios_name = BIOS_FILENAME;
868 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
869 bios_size = get_image_size(buf);
870 if (bios_size <= 0 ||
871 (bios_size % 65536) != 0) {
872 goto bios_error;
873 }
874 bios_offset = qemu_ram_alloc(bios_size);
875 ret = load_image(buf, phys_ram_base + bios_offset);
876 if (ret != bios_size) {
877 bios_error:
878 fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf);
879 exit(1);
880 }
881
882 /* VGA BIOS load */
883 if (cirrus_vga_enabled) {
884 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME);
885 } else {
886 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
887 }
888 vga_bios_size = get_image_size(buf);
889 if (vga_bios_size <= 0 || vga_bios_size > 65536)
890 goto vga_bios_error;
891 vga_bios_offset = qemu_ram_alloc(65536);
892
893 ret = load_image(buf, phys_ram_base + vga_bios_offset);
894 if (ret != vga_bios_size) {
895 vga_bios_error:
896 fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf);
897 exit(1);
898 }
899
900 /* setup basic memory access */
901 cpu_register_physical_memory(0xc0000, 0x10000,
902 vga_bios_offset | IO_MEM_ROM);
903 if (kvm_enabled())
904 kvm_cpu_register_physical_memory(0xc0000, 0x10000,
905 vga_bios_offset | IO_MEM_ROM);
906
907 /* map the last 128KB of the BIOS in ISA space */
908 isa_bios_size = bios_size;
909 if (isa_bios_size > (128 * 1024))
910 isa_bios_size = 128 * 1024;
911 cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size,
912 IO_MEM_UNASSIGNED);
913 /* kvm tpr optimization needs the bios accessible for write, at least to qemu itself */
914 cpu_register_physical_memory(0x100000 - isa_bios_size,
915 isa_bios_size,
916 (bios_offset + bios_size - isa_bios_size) /* | IO_MEM_ROM */);
917 if (kvm_enabled())
918 kvm_cpu_register_physical_memory(0x100000 - isa_bios_size,
919 isa_bios_size,
920 (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
921
922 opt_rom_offset = 0;
923 for (i = 0; i < nb_option_roms; i++)
924 opt_rom_offset += load_option_rom(option_rom[i], opt_rom_offset);
925
926 if (extboot_drive != -1) {
927 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, EXTBOOT_FILENAME);
928 opt_rom_offset += load_option_rom(buf, opt_rom_offset);
929 }
930
931 /* map all the bios at the top of memory */
932 cpu_register_physical_memory((uint32_t)(-bios_size),
933 bios_size, bios_offset | IO_MEM_ROM);
934 if (kvm_enabled()) {
935 int r;
936 #ifdef KVM_CAP_USER_MEMORY
937 r = kvm_qemu_check_extension(KVM_CAP_USER_MEMORY);
938 if (r)
939 kvm_cpu_register_physical_memory((uint32_t)(-bios_size),
940 bios_size, bios_offset | IO_MEM_ROM);
941 else
942 #endif
943 {
944 bios_mem = kvm_cpu_create_phys_mem((uint32_t)(-bios_size),
945 bios_size, 0, 1);
946 if (!bios_mem)
947 exit(1);
948 memcpy(bios_mem, phys_ram_base + bios_offset, bios_size);
949 }
950 }
951
952 bochs_bios_init();
953
954 if (linux_boot)
955 load_linux(kernel_filename, initrd_filename, kernel_cmdline);
956
957 cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1);
958 i8259 = i8259_init(cpu_irq[0]);
959 ferr_irq = i8259[13];
960
961 if (pci_enabled) {
962 pci_bus = i440fx_init(&i440fx_state, i8259);
963 piix3_devfn = piix3_init(pci_bus, -1);
964 } else {
965 pci_bus = NULL;
966 }
967
968 /* init basic PC hardware */
969 register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
970
971 register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
972
973 if (cirrus_vga_enabled) {
974 if (pci_enabled) {
975 pci_cirrus_vga_init(pci_bus,
976 ds, phys_ram_base + vga_ram_addr,
977 vga_ram_addr, vga_ram_size);
978 } else {
979 isa_cirrus_vga_init(ds, phys_ram_base + vga_ram_addr,
980 vga_ram_addr, vga_ram_size);
981 }
982 } else if (vmsvga_enabled) {
983 if (pci_enabled)
984 pci_vmsvga_init(pci_bus, ds, phys_ram_base + vga_ram_addr,
985 vga_ram_addr, vga_ram_size);
986 else
987 fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
988 } else {
989 if (pci_enabled) {
990 pci_vga_init(pci_bus, ds, phys_ram_base + vga_ram_addr,
991 vga_ram_addr, vga_ram_size, 0, 0);
992 } else {
993 isa_vga_init(ds, phys_ram_base + vga_ram_addr,
994 vga_ram_addr, vga_ram_size);
995 }
996 }
997
998 rtc_state = rtc_init(0x70, i8259[8]);
999
1000 qemu_register_boot_set(pc_boot_set, rtc_state);
1001
1002 register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
1003 register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
1004
1005 if (pci_enabled) {
1006 ioapic = ioapic_init();
1007 }
1008 #ifdef USE_KVM_PIT
1009 if (kvm_enabled() && qemu_kvm_pit_in_kernel())
1010 pit = kvm_pit_init(0x40, i8259[0]);
1011 else
1012 #endif
1013 pit = pit_init(0x40, i8259[0]);
1014 pcspk_init(pit);
1015 if (pci_enabled) {
1016 pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic);
1017 }
1018
1019 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
1020 if (serial_hds[i]) {
1021 serial_init(serial_io[i], i8259[serial_irq[i]], 115200,
1022 serial_hds[i]);
1023 }
1024 }
1025
1026 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
1027 if (parallel_hds[i]) {
1028 parallel_init(parallel_io[i], i8259[parallel_irq[i]],
1029 parallel_hds[i]);
1030 }
1031 }
1032
1033 for(i = 0; i < nb_nics; i++) {
1034 nd = &nd_table[i];
1035 if (!nd->model) {
1036 if (pci_enabled) {
1037 nd->model = "rtl8139";
1038 } else {
1039 nd->model = "ne2k_isa";
1040 }
1041 }
1042 if (strcmp(nd->model, "ne2k_isa") == 0) {
1043 pc_init_ne2k_isa(nd, i8259);
1044 } else if (pci_enabled) {
1045 if (strcmp(nd->model, "?") == 0)
1046 fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
1047 if (!pci_nic_init(pci_bus, nd, -1))
1048 exit(1);
1049 } else if (strcmp(nd->model, "?") == 0) {
1050 fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
1051 exit(1);
1052 } else {
1053 fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
1054 exit(1);
1055 }
1056 }
1057
1058 qemu_system_hot_add_init(cpu_model);
1059 #define USE_HYPERCALL
1060 #ifdef USE_HYPERCALL
1061 pci_hypercall_init(pci_bus);
1062 #endif
1063
1064 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
1065 fprintf(stderr, "qemu: too many IDE bus\n");
1066 exit(1);
1067 }
1068
1069 for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
1070 index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
1071 if (index != -1)
1072 hd[i] = drives_table[index].bdrv;
1073 else
1074 hd[i] = NULL;
1075 }
1076
1077 if (pci_enabled) {
1078 pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1, i8259);
1079 } else {
1080 for(i = 0; i < MAX_IDE_BUS; i++) {
1081 isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
1082 hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
1083 }
1084 }
1085
1086 i8042_init(i8259[1], i8259[12], 0x60);
1087 DMA_init(0);
1088 #ifdef HAS_AUDIO
1089 audio_init(pci_enabled ? pci_bus : NULL, i8259);
1090 #endif
1091
1092 for(i = 0; i < MAX_FD; i++) {
1093 index = drive_get_index(IF_FLOPPY, 0, i);
1094 if (index != -1)
1095 fd[i] = drives_table[index].bdrv;
1096 else
1097 fd[i] = NULL;
1098 }
1099 floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd);
1100
1101 cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd,
1102 smp_cpus);
1103
1104 if (pci_enabled && usb_enabled) {
1105 usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
1106 }
1107
1108 if (pci_enabled && acpi_enabled) {
1109 uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
1110 i2c_bus *smbus;
1111
1112 /* TODO: Populate SPD eeprom data. */
1113 smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, i8259[9]);
1114 for (i = 0; i < 8; i++) {
1115 smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
1116 }
1117 }
1118
1119 if (i440fx_state) {
1120 i440fx_init_memory_mappings(i440fx_state);
1121 }
1122
1123 if (pci_enabled) {
1124 int max_bus;
1125 int bus, unit;
1126 void *scsi;
1127
1128 max_bus = drive_get_max_bus(IF_SCSI);
1129
1130 for (bus = 0; bus <= max_bus; bus++) {
1131 scsi = lsi_scsi_init(pci_bus, -1);
1132 for (unit = 0; unit < LSI_MAX_DEVS; unit++) {
1133 index = drive_get_index(IF_SCSI, bus, unit);
1134 if (index == -1)
1135 continue;
1136 lsi_scsi_attach(scsi, drives_table[index].bdrv, unit);
1137 }
1138 }
1139 }
1140
1141 /* Add virtio block devices */
1142 if (pci_enabled) {
1143 int index;
1144 int unit_id = 0;
1145
1146 while ((index = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
1147 virtio_blk_init(pci_bus, 0x1AF4, 0x1001,
1148 drives_table[index].bdrv);
1149 unit_id++;
1150 }
1151 }
1152
1153 if (extboot_drive != -1) {
1154 DriveInfo *info = &drives_table[extboot_drive];
1155 int cyls, heads, secs;
1156
1157 if (info->type != IF_IDE && info->type != IF_VIRTIO) {
1158 bdrv_guess_geometry(info->bdrv, &cyls, &heads, &secs);
1159 bdrv_set_geometry_hint(info->bdrv, cyls, heads, secs);
1160 }
1161
1162 extboot_init(info->bdrv, 1);
1163 }
1164 }
1165
1166 static void pc_init_pci(ram_addr_t ram_size, int vga_ram_size,
1167 const char *boot_device, DisplayState *ds,
1168 const char *kernel_filename,
1169 const char *kernel_cmdline,
1170 const char *initrd_filename,
1171 const char *cpu_model)
1172 {
1173 pc_init1(ram_size, vga_ram_size, boot_device, ds,
1174 kernel_filename, kernel_cmdline,
1175 initrd_filename, 1, cpu_model);
1176 }
1177
1178 static void pc_init_isa(ram_addr_t ram_size, int vga_ram_size,
1179 const char *boot_device, DisplayState *ds,
1180 const char *kernel_filename,
1181 const char *kernel_cmdline,
1182 const char *initrd_filename,
1183 const char *cpu_model)
1184 {
1185 pc_init1(ram_size, vga_ram_size, boot_device, ds,
1186 kernel_filename, kernel_cmdline,
1187 initrd_filename, 0, cpu_model);
1188 }
1189
1190 QEMUMachine pc_machine = {
1191 "pc",
1192 "Standard PC",
1193 pc_init_pci,
1194 VGA_RAM_SIZE + PC_MAX_BIOS_SIZE,
1195 };
1196
1197 QEMUMachine isapc_machine = {
1198 "isapc",
1199 "ISA-only PC",
1200 pc_init_isa,
1201 VGA_RAM_SIZE + PC_MAX_BIOS_SIZE,
1202 };
Patches shipped by Fedora