Rearrange PCI host emulation code.
[qemu/mini2440.git] / hw / pc.c
blob642af5e2b56f923ff3a38c1c50c57311864d4533
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 #include "vl.h"
26 /* output Bochs bios info messages */
27 //#define DEBUG_BIOS
29 #define BIOS_FILENAME "bios.bin"
30 #define VGABIOS_FILENAME "vgabios.bin"
31 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
32 #define LINUX_BOOT_FILENAME "linux_boot.bin"
34 #define KERNEL_LOAD_ADDR 0x00100000
35 #define INITRD_LOAD_ADDR 0x00600000
36 #define KERNEL_PARAMS_ADDR 0x00090000
37 #define KERNEL_CMDLINE_ADDR 0x00099000
39 static fdctrl_t *floppy_controller;
40 static RTCState *rtc_state;
41 static PITState *pit;
42 static IOAPICState *ioapic;
43 static USBPort *usb_root_ports[2];
45 static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
49 /* MSDOS compatibility mode FPU exception support */
50 /* XXX: add IGNNE support */
51 void cpu_set_ferr(CPUX86State *s)
53 pic_set_irq(13, 1);
56 static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
58 pic_set_irq(13, 0);
61 /* TSC handling */
63 uint64_t cpu_get_tsc(CPUX86State *env)
65 return qemu_get_clock(vm_clock);
68 /* IRQ handling */
69 int cpu_get_pic_interrupt(CPUState *env)
71 int intno;
73 intno = apic_get_interrupt(env);
74 if (intno >= 0) {
75 /* set irq request if a PIC irq is still pending */
76 /* XXX: improve that */
77 pic_update_irq(isa_pic);
78 return intno;
80 /* read the irq from the PIC */
81 intno = pic_read_irq(isa_pic);
82 return intno;
85 static void pic_irq_request(void *opaque, int level)
87 CPUState *env = opaque;
88 if (level)
89 cpu_interrupt(env, CPU_INTERRUPT_HARD);
90 else
91 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
94 /* PC cmos mappings */
96 #define REG_EQUIPMENT_BYTE 0x14
97 #define REG_IBM_CENTURY_BYTE 0x32
98 #define REG_IBM_PS2_CENTURY_BYTE 0x37
101 static inline int to_bcd(RTCState *s, int a)
103 return ((a / 10) << 4) | (a % 10);
106 static int cmos_get_fd_drive_type(int fd0)
108 int val;
110 switch (fd0) {
111 case 0:
112 /* 1.44 Mb 3"5 drive */
113 val = 4;
114 break;
115 case 1:
116 /* 2.88 Mb 3"5 drive */
117 val = 5;
118 break;
119 case 2:
120 /* 1.2 Mb 5"5 drive */
121 val = 2;
122 break;
123 default:
124 val = 0;
125 break;
127 return val;
130 static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
132 RTCState *s = rtc_state;
133 int cylinders, heads, sectors;
134 bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
135 rtc_set_memory(s, type_ofs, 47);
136 rtc_set_memory(s, info_ofs, cylinders);
137 rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
138 rtc_set_memory(s, info_ofs + 2, heads);
139 rtc_set_memory(s, info_ofs + 3, 0xff);
140 rtc_set_memory(s, info_ofs + 4, 0xff);
141 rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
142 rtc_set_memory(s, info_ofs + 6, cylinders);
143 rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
144 rtc_set_memory(s, info_ofs + 8, sectors);
147 /* hd_table must contain 4 block drivers */
148 static void cmos_init(int ram_size, int boot_device, BlockDriverState **hd_table)
150 RTCState *s = rtc_state;
151 int val;
152 int fd0, fd1, nb;
153 time_t ti;
154 struct tm *tm;
155 int i;
157 /* set the CMOS date */
158 time(&ti);
159 if (rtc_utc)
160 tm = gmtime(&ti);
161 else
162 tm = localtime(&ti);
163 rtc_set_date(s, tm);
165 val = to_bcd(s, (tm->tm_year / 100) + 19);
166 rtc_set_memory(s, REG_IBM_CENTURY_BYTE, val);
167 rtc_set_memory(s, REG_IBM_PS2_CENTURY_BYTE, val);
169 /* various important CMOS locations needed by PC/Bochs bios */
171 /* memory size */
172 val = 640; /* base memory in K */
173 rtc_set_memory(s, 0x15, val);
174 rtc_set_memory(s, 0x16, val >> 8);
176 val = (ram_size / 1024) - 1024;
177 if (val > 65535)
178 val = 65535;
179 rtc_set_memory(s, 0x17, val);
180 rtc_set_memory(s, 0x18, val >> 8);
181 rtc_set_memory(s, 0x30, val);
182 rtc_set_memory(s, 0x31, val >> 8);
184 if (ram_size > (16 * 1024 * 1024))
185 val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
186 else
187 val = 0;
188 if (val > 65535)
189 val = 65535;
190 rtc_set_memory(s, 0x34, val);
191 rtc_set_memory(s, 0x35, val >> 8);
193 switch(boot_device) {
194 case 'a':
195 case 'b':
196 rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */
197 break;
198 default:
199 case 'c':
200 rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */
201 break;
202 case 'd':
203 rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */
204 break;
207 /* floppy type */
209 fd0 = fdctrl_get_drive_type(floppy_controller, 0);
210 fd1 = fdctrl_get_drive_type(floppy_controller, 1);
212 val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
213 rtc_set_memory(s, 0x10, val);
215 val = 0;
216 nb = 0;
217 if (fd0 < 3)
218 nb++;
219 if (fd1 < 3)
220 nb++;
221 switch (nb) {
222 case 0:
223 break;
224 case 1:
225 val |= 0x01; /* 1 drive, ready for boot */
226 break;
227 case 2:
228 val |= 0x41; /* 2 drives, ready for boot */
229 break;
231 val |= 0x02; /* FPU is there */
232 val |= 0x04; /* PS/2 mouse installed */
233 rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
235 /* hard drives */
237 rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
238 if (hd_table[0])
239 cmos_init_hd(0x19, 0x1b, hd_table[0]);
240 if (hd_table[1])
241 cmos_init_hd(0x1a, 0x24, hd_table[1]);
243 val = 0;
244 for (i = 0; i < 4; i++) {
245 if (hd_table[i]) {
246 int cylinders, heads, sectors, translation;
247 /* NOTE: bdrv_get_geometry_hint() returns the physical
248 geometry. It is always such that: 1 <= sects <= 63, 1
249 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
250 geometry can be different if a translation is done. */
251 translation = bdrv_get_translation_hint(hd_table[i]);
252 if (translation == BIOS_ATA_TRANSLATION_AUTO) {
253 bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
254 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
255 /* No translation. */
256 translation = 0;
257 } else {
258 /* LBA translation. */
259 translation = 1;
261 } else {
262 translation--;
264 val |= translation << (i * 2);
267 rtc_set_memory(s, 0x39, val);
269 /* Disable check of 0x55AA signature on the last two bytes of
270 first sector of disk. XXX: make it the default ? */
271 // rtc_set_memory(s, 0x38, 1);
274 void ioport_set_a20(int enable)
276 /* XXX: send to all CPUs ? */
277 cpu_x86_set_a20(first_cpu, enable);
280 int ioport_get_a20(void)
282 return ((first_cpu->a20_mask >> 20) & 1);
285 static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
287 ioport_set_a20((val >> 1) & 1);
288 /* XXX: bit 0 is fast reset */
291 static uint32_t ioport92_read(void *opaque, uint32_t addr)
293 return ioport_get_a20() << 1;
296 /***********************************************************/
297 /* Bochs BIOS debug ports */
299 void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
301 static const char shutdown_str[8] = "Shutdown";
302 static int shutdown_index = 0;
304 switch(addr) {
305 /* Bochs BIOS messages */
306 case 0x400:
307 case 0x401:
308 fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
309 exit(1);
310 case 0x402:
311 case 0x403:
312 #ifdef DEBUG_BIOS
313 fprintf(stderr, "%c", val);
314 #endif
315 break;
316 case 0x8900:
317 /* same as Bochs power off */
318 if (val == shutdown_str[shutdown_index]) {
319 shutdown_index++;
320 if (shutdown_index == 8) {
321 shutdown_index = 0;
322 qemu_system_shutdown_request();
324 } else {
325 shutdown_index = 0;
327 break;
329 /* LGPL'ed VGA BIOS messages */
330 case 0x501:
331 case 0x502:
332 fprintf(stderr, "VGA BIOS panic, line %d\n", val);
333 exit(1);
334 case 0x500:
335 case 0x503:
336 #ifdef DEBUG_BIOS
337 fprintf(stderr, "%c", val);
338 #endif
339 break;
343 void bochs_bios_init(void)
345 register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
346 register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
347 register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
348 register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
349 register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
351 register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
352 register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
353 register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
354 register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
358 int load_kernel(const char *filename, uint8_t *addr,
359 uint8_t *real_addr)
361 int fd, size;
362 int setup_sects;
364 fd = open(filename, O_RDONLY | O_BINARY);
365 if (fd < 0)
366 return -1;
368 /* load 16 bit code */
369 if (read(fd, real_addr, 512) != 512)
370 goto fail;
371 setup_sects = real_addr[0x1F1];
372 if (!setup_sects)
373 setup_sects = 4;
374 if (read(fd, real_addr + 512, setup_sects * 512) !=
375 setup_sects * 512)
376 goto fail;
378 /* load 32 bit code */
379 size = read(fd, addr, 16 * 1024 * 1024);
380 if (size < 0)
381 goto fail;
382 close(fd);
383 return size;
384 fail:
385 close(fd);
386 return -1;
389 static void main_cpu_reset(void *opaque)
391 CPUState *env = opaque;
392 cpu_reset(env);
395 /*************************************************/
397 static void putb(uint8_t **pp, int val)
399 uint8_t *q;
400 q = *pp;
401 *q++ = val;
402 *pp = q;
405 static void putstr(uint8_t **pp, const char *str)
407 uint8_t *q;
408 q = *pp;
409 while (*str)
410 *q++ = *str++;
411 *pp = q;
414 static void putle16(uint8_t **pp, int val)
416 uint8_t *q;
417 q = *pp;
418 *q++ = val;
419 *q++ = val >> 8;
420 *pp = q;
423 static void putle32(uint8_t **pp, int val)
425 uint8_t *q;
426 q = *pp;
427 *q++ = val;
428 *q++ = val >> 8;
429 *q++ = val >> 16;
430 *q++ = val >> 24;
431 *pp = q;
434 static int mpf_checksum(const uint8_t *data, int len)
436 int sum, i;
437 sum = 0;
438 for(i = 0; i < len; i++)
439 sum += data[i];
440 return sum & 0xff;
443 /* Build the Multi Processor table in the BIOS. Same values as Bochs. */
444 static void bios_add_mptable(uint8_t *bios_data)
446 uint8_t *mp_config_table, *q, *float_pointer_struct;
447 int ioapic_id, offset, i, len;
449 if (smp_cpus <= 1)
450 return;
452 mp_config_table = bios_data + 0xb000;
453 q = mp_config_table;
454 putstr(&q, "PCMP"); /* "PCMP signature */
455 putle16(&q, 0); /* table length (patched later) */
456 putb(&q, 4); /* spec rev */
457 putb(&q, 0); /* checksum (patched later) */
458 putstr(&q, "QEMUCPU "); /* OEM id */
459 putstr(&q, "0.1 "); /* vendor id */
460 putle32(&q, 0); /* OEM table ptr */
461 putle16(&q, 0); /* OEM table size */
462 putle16(&q, 20); /* entry count */
463 putle32(&q, 0xfee00000); /* local APIC addr */
464 putle16(&q, 0); /* ext table length */
465 putb(&q, 0); /* ext table checksum */
466 putb(&q, 0); /* reserved */
468 for(i = 0; i < smp_cpus; i++) {
469 putb(&q, 0); /* entry type = processor */
470 putb(&q, i); /* APIC id */
471 putb(&q, 0x11); /* local APIC version number */
472 if (i == 0)
473 putb(&q, 3); /* cpu flags: enabled, bootstrap cpu */
474 else
475 putb(&q, 1); /* cpu flags: enabled */
476 putb(&q, 0); /* cpu signature */
477 putb(&q, 6);
478 putb(&q, 0);
479 putb(&q, 0);
480 putle16(&q, 0x201); /* feature flags */
481 putle16(&q, 0);
483 putle16(&q, 0); /* reserved */
484 putle16(&q, 0);
485 putle16(&q, 0);
486 putle16(&q, 0);
489 /* isa bus */
490 putb(&q, 1); /* entry type = bus */
491 putb(&q, 0); /* bus ID */
492 putstr(&q, "ISA ");
494 /* ioapic */
495 ioapic_id = smp_cpus;
496 putb(&q, 2); /* entry type = I/O APIC */
497 putb(&q, ioapic_id); /* apic ID */
498 putb(&q, 0x11); /* I/O APIC version number */
499 putb(&q, 1); /* enable */
500 putle32(&q, 0xfec00000); /* I/O APIC addr */
502 /* irqs */
503 for(i = 0; i < 16; i++) {
504 putb(&q, 3); /* entry type = I/O interrupt */
505 putb(&q, 0); /* interrupt type = vectored interrupt */
506 putb(&q, 0); /* flags: po=0, el=0 */
507 putb(&q, 0);
508 putb(&q, 0); /* source bus ID = ISA */
509 putb(&q, i); /* source bus IRQ */
510 putb(&q, ioapic_id); /* dest I/O APIC ID */
511 putb(&q, i); /* dest I/O APIC interrupt in */
513 /* patch length */
514 len = q - mp_config_table;
515 mp_config_table[4] = len;
516 mp_config_table[5] = len >> 8;
518 mp_config_table[7] = -mpf_checksum(mp_config_table, q - mp_config_table);
520 /* align to 16 */
521 offset = q - bios_data;
522 offset = (offset + 15) & ~15;
523 float_pointer_struct = bios_data + offset;
525 /* floating pointer structure */
526 q = float_pointer_struct;
527 putstr(&q, "_MP_");
528 /* pointer to MP config table */
529 putle32(&q, mp_config_table - bios_data + 0x000f0000);
531 putb(&q, 1); /* length in 16 byte units */
532 putb(&q, 4); /* MP spec revision */
533 putb(&q, 0); /* checksum (patched later) */
534 putb(&q, 0); /* MP feature byte 1 */
536 putb(&q, 0);
537 putb(&q, 0);
538 putb(&q, 0);
539 putb(&q, 0);
540 float_pointer_struct[10] =
541 -mpf_checksum(float_pointer_struct, q - float_pointer_struct);
545 static const int ide_iobase[2] = { 0x1f0, 0x170 };
546 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
547 static const int ide_irq[2] = { 14, 15 };
549 #define NE2000_NB_MAX 6
551 static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
552 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
554 static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
555 static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
557 static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
558 static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
560 #ifdef HAS_AUDIO
561 static void audio_init (PCIBus *pci_bus)
563 struct soundhw *c;
564 int audio_enabled = 0;
566 for (c = soundhw; !audio_enabled && c->name; ++c) {
567 audio_enabled = c->enabled;
570 if (audio_enabled) {
571 AudioState *s;
573 s = AUD_init ();
574 if (s) {
575 for (c = soundhw; c->name; ++c) {
576 if (c->enabled) {
577 if (c->isa) {
578 c->init.init_isa (s);
580 else {
581 if (pci_bus) {
582 c->init.init_pci (pci_bus, s);
590 #endif
592 static void pc_init_ne2k_isa(NICInfo *nd)
594 static int nb_ne2k = 0;
596 if (nb_ne2k == NE2000_NB_MAX)
597 return;
598 isa_ne2000_init(ne2000_io[nb_ne2k], ne2000_irq[nb_ne2k], nd);
599 nb_ne2k++;
602 /* PC hardware initialisation */
603 static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
604 DisplayState *ds, const char **fd_filename, int snapshot,
605 const char *kernel_filename, const char *kernel_cmdline,
606 const char *initrd_filename,
607 int pci_enabled)
609 char buf[1024];
610 int ret, linux_boot, initrd_size, i;
611 unsigned long bios_offset, vga_bios_offset;
612 int bios_size, isa_bios_size;
613 PCIBus *pci_bus;
614 int piix3_devfn;
615 CPUState *env;
616 NICInfo *nd;
618 linux_boot = (kernel_filename != NULL);
620 /* init CPUs */
621 for(i = 0; i < smp_cpus; i++) {
622 env = cpu_init();
623 if (i != 0)
624 env->hflags |= HF_HALTED_MASK;
625 if (smp_cpus > 1) {
626 /* XXX: enable it in all cases */
627 env->cpuid_features |= CPUID_APIC;
629 register_savevm("cpu", i, 3, cpu_save, cpu_load, env);
630 qemu_register_reset(main_cpu_reset, env);
631 if (pci_enabled) {
632 apic_init(env);
636 /* allocate RAM */
637 cpu_register_physical_memory(0, ram_size, 0);
639 /* BIOS load */
640 bios_offset = ram_size + vga_ram_size;
641 vga_bios_offset = bios_offset + 256 * 1024;
643 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
644 bios_size = get_image_size(buf);
645 if (bios_size <= 0 ||
646 (bios_size % 65536) != 0 ||
647 bios_size > (256 * 1024)) {
648 goto bios_error;
650 ret = load_image(buf, phys_ram_base + bios_offset);
651 if (ret != bios_size) {
652 bios_error:
653 fprintf(stderr, "qemu: could not load PC bios '%s'\n", buf);
654 exit(1);
656 if (bios_size == 65536) {
657 bios_add_mptable(phys_ram_base + bios_offset);
660 /* VGA BIOS load */
661 if (cirrus_vga_enabled) {
662 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME);
663 } else {
664 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
666 ret = load_image(buf, phys_ram_base + vga_bios_offset);
668 /* setup basic memory access */
669 cpu_register_physical_memory(0xc0000, 0x10000,
670 vga_bios_offset | IO_MEM_ROM);
672 /* map the last 128KB of the BIOS in ISA space */
673 isa_bios_size = bios_size;
674 if (isa_bios_size > (128 * 1024))
675 isa_bios_size = 128 * 1024;
676 cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size,
677 IO_MEM_UNASSIGNED);
678 cpu_register_physical_memory(0x100000 - isa_bios_size,
679 isa_bios_size,
680 (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
681 /* map all the bios at the top of memory */
682 cpu_register_physical_memory((uint32_t)(-bios_size),
683 bios_size, bios_offset | IO_MEM_ROM);
685 bochs_bios_init();
687 if (linux_boot) {
688 uint8_t bootsect[512];
689 uint8_t old_bootsect[512];
691 if (bs_table[0] == NULL) {
692 fprintf(stderr, "A disk image must be given for 'hda' when booting a Linux kernel\n");
693 exit(1);
695 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, LINUX_BOOT_FILENAME);
696 ret = load_image(buf, bootsect);
697 if (ret != sizeof(bootsect)) {
698 fprintf(stderr, "qemu: could not load linux boot sector '%s'\n",
699 buf);
700 exit(1);
703 if (bdrv_read(bs_table[0], 0, old_bootsect, 1) >= 0) {
704 /* copy the MSDOS partition table */
705 memcpy(bootsect + 0x1be, old_bootsect + 0x1be, 0x40);
708 bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect));
710 /* now we can load the kernel */
711 ret = load_kernel(kernel_filename,
712 phys_ram_base + KERNEL_LOAD_ADDR,
713 phys_ram_base + KERNEL_PARAMS_ADDR);
714 if (ret < 0) {
715 fprintf(stderr, "qemu: could not load kernel '%s'\n",
716 kernel_filename);
717 exit(1);
720 /* load initrd */
721 initrd_size = 0;
722 if (initrd_filename) {
723 initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
724 if (initrd_size < 0) {
725 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
726 initrd_filename);
727 exit(1);
730 if (initrd_size > 0) {
731 stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x218, INITRD_LOAD_ADDR);
732 stl_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x21c, initrd_size);
734 pstrcpy(phys_ram_base + KERNEL_CMDLINE_ADDR, 4096,
735 kernel_cmdline);
736 stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x20, 0xA33F);
737 stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x22,
738 KERNEL_CMDLINE_ADDR - KERNEL_PARAMS_ADDR);
739 /* loader type */
740 stw_raw(phys_ram_base + KERNEL_PARAMS_ADDR + 0x210, 0x01);
743 if (pci_enabled) {
744 pci_bus = i440fx_init();
745 piix3_devfn = piix3_init(pci_bus);
746 } else {
747 pci_bus = NULL;
750 /* init basic PC hardware */
751 register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
753 register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
755 if (cirrus_vga_enabled) {
756 if (pci_enabled) {
757 pci_cirrus_vga_init(pci_bus,
758 ds, phys_ram_base + ram_size, ram_size,
759 vga_ram_size);
760 } else {
761 isa_cirrus_vga_init(ds, phys_ram_base + ram_size, ram_size,
762 vga_ram_size);
764 } else {
765 vga_initialize(pci_bus, ds, phys_ram_base + ram_size, ram_size,
766 vga_ram_size, 0, 0);
769 rtc_state = rtc_init(0x70, 8);
771 register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
772 register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
774 if (pci_enabled) {
775 ioapic = ioapic_init();
777 isa_pic = pic_init(pic_irq_request, first_cpu);
778 pit = pit_init(0x40, 0);
779 pcspk_init(pit);
780 if (pci_enabled) {
781 pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic);
784 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
785 if (serial_hds[i]) {
786 serial_init(&pic_set_irq_new, isa_pic,
787 serial_io[i], serial_irq[i], serial_hds[i]);
791 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
792 if (parallel_hds[i]) {
793 parallel_init(parallel_io[i], parallel_irq[i], parallel_hds[i]);
797 for(i = 0; i < nb_nics; i++) {
798 nd = &nd_table[i];
799 if (!nd->model) {
800 if (pci_enabled) {
801 nd->model = "ne2k_pci";
802 } else {
803 nd->model = "ne2k_isa";
806 if (strcmp(nd->model, "ne2k_isa") == 0) {
807 pc_init_ne2k_isa(nd);
808 } else if (pci_enabled) {
809 pci_nic_init(pci_bus, nd);
810 } else {
811 fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
812 exit(1);
816 if (pci_enabled) {
817 pci_piix3_ide_init(pci_bus, bs_table, piix3_devfn + 1);
818 } else {
819 for(i = 0; i < 2; i++) {
820 isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
821 bs_table[2 * i], bs_table[2 * i + 1]);
825 kbd_init();
826 DMA_init(0);
827 #ifdef HAS_AUDIO
828 audio_init(pci_enabled ? pci_bus : NULL);
829 #endif
831 floppy_controller = fdctrl_init(6, 2, 0, 0x3f0, fd_table);
833 cmos_init(ram_size, boot_device, bs_table);
835 if (pci_enabled && usb_enabled) {
836 usb_uhci_init(pci_bus, usb_root_ports, piix3_devfn + 2);
837 usb_attach(usb_root_ports[0], vm_usb_hub);
840 if (pci_enabled && acpi_enabled) {
841 piix4_pm_init(pci_bus, piix3_devfn + 3);
843 /* must be done after all PCI devices are instanciated */
844 /* XXX: should be done in the Bochs BIOS */
845 if (pci_enabled) {
846 pci_bios_init();
847 if (acpi_enabled)
848 acpi_bios_init();
852 static void pc_init_pci(int ram_size, int vga_ram_size, int boot_device,
853 DisplayState *ds, const char **fd_filename,
854 int snapshot,
855 const char *kernel_filename,
856 const char *kernel_cmdline,
857 const char *initrd_filename)
859 pc_init1(ram_size, vga_ram_size, boot_device,
860 ds, fd_filename, snapshot,
861 kernel_filename, kernel_cmdline,
862 initrd_filename, 1);
865 static void pc_init_isa(int ram_size, int vga_ram_size, int boot_device,
866 DisplayState *ds, const char **fd_filename,
867 int snapshot,
868 const char *kernel_filename,
869 const char *kernel_cmdline,
870 const char *initrd_filename)
872 pc_init1(ram_size, vga_ram_size, boot_device,
873 ds, fd_filename, snapshot,
874 kernel_filename, kernel_cmdline,
875 initrd_filename, 0);
878 QEMUMachine pc_machine = {
879 "pc",
880 "Standard PC",
881 pc_init_pci,
884 QEMUMachine isapc_machine = {
885 "isapc",
886 "ISA-only PC",
887 pc_init_isa,