[S3C] Make s3c aware of 2440s
[qemu/mini2440.git] / hw / pc.c
blob69f25f39aae67e83ab8440e0da48a34fcc5f42d3
1 /*
2 * QEMU PC System Emulator
4 * Copyright (c) 2003-2004 Fabrice Bellard
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 "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 "monitor.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"
41 /* output Bochs bios info messages */
42 //#define DEBUG_BIOS
44 #define BIOS_FILENAME "bios.bin"
45 #define VGABIOS_FILENAME "vgabios.bin"
46 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
48 #define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
50 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
51 #define ACPI_DATA_SIZE 0x10000
52 #define BIOS_CFG_IOPORT 0x510
53 #define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0)
55 #define MAX_IDE_BUS 2
57 static fdctrl_t *floppy_controller;
58 static RTCState *rtc_state;
59 static PITState *pit;
60 static IOAPICState *ioapic;
61 static PCIDevice *i440fx_state;
63 static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
67 /* MSDOS compatibility mode FPU exception support */
68 static qemu_irq ferr_irq;
69 /* XXX: add IGNNE support */
70 void cpu_set_ferr(CPUX86State *s)
72 qemu_irq_raise(ferr_irq);
75 static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
77 qemu_irq_lower(ferr_irq);
80 /* TSC handling */
81 uint64_t cpu_get_tsc(CPUX86State *env)
83 /* Note: when using kqemu, it is more logical to return the host TSC
84 because kqemu does not trap the RDTSC instruction for
85 performance reasons */
86 #ifdef USE_KQEMU
87 if (env->kqemu_enabled) {
88 return cpu_get_real_ticks();
89 } else
90 #endif
92 return cpu_get_ticks();
96 /* SMM support */
97 void cpu_smm_update(CPUState *env)
99 if (i440fx_state && env == first_cpu)
100 i440fx_set_smm(i440fx_state, (env->hflags >> HF_SMM_SHIFT) & 1);
104 /* IRQ handling */
105 int cpu_get_pic_interrupt(CPUState *env)
107 int intno;
109 intno = apic_get_interrupt(env);
110 if (intno >= 0) {
111 /* set irq request if a PIC irq is still pending */
112 /* XXX: improve that */
113 pic_update_irq(isa_pic);
114 return intno;
116 /* read the irq from the PIC */
117 if (!apic_accept_pic_intr(env))
118 return -1;
120 intno = pic_read_irq(isa_pic);
121 return intno;
124 static void pic_irq_request(void *opaque, int irq, int level)
126 CPUState *env = first_cpu;
128 if (env->apic_state) {
129 while (env) {
130 if (apic_accept_pic_intr(env))
131 apic_deliver_pic_intr(env, level);
132 env = env->next_cpu;
134 } else {
135 if (level)
136 cpu_interrupt(env, CPU_INTERRUPT_HARD);
137 else
138 cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
142 /* PC cmos mappings */
144 #define REG_EQUIPMENT_BYTE 0x14
146 static int cmos_get_fd_drive_type(int fd0)
148 int val;
150 switch (fd0) {
151 case 0:
152 /* 1.44 Mb 3"5 drive */
153 val = 4;
154 break;
155 case 1:
156 /* 2.88 Mb 3"5 drive */
157 val = 5;
158 break;
159 case 2:
160 /* 1.2 Mb 5"5 drive */
161 val = 2;
162 break;
163 default:
164 val = 0;
165 break;
167 return val;
170 static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
172 RTCState *s = rtc_state;
173 int cylinders, heads, sectors;
174 bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
175 rtc_set_memory(s, type_ofs, 47);
176 rtc_set_memory(s, info_ofs, cylinders);
177 rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
178 rtc_set_memory(s, info_ofs + 2, heads);
179 rtc_set_memory(s, info_ofs + 3, 0xff);
180 rtc_set_memory(s, info_ofs + 4, 0xff);
181 rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
182 rtc_set_memory(s, info_ofs + 6, cylinders);
183 rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
184 rtc_set_memory(s, info_ofs + 8, sectors);
187 /* convert boot_device letter to something recognizable by the bios */
188 static int boot_device2nibble(char boot_device)
190 switch(boot_device) {
191 case 'a':
192 case 'b':
193 return 0x01; /* floppy boot */
194 case 'c':
195 return 0x02; /* hard drive boot */
196 case 'd':
197 return 0x03; /* CD-ROM boot */
198 case 'n':
199 return 0x04; /* Network boot */
201 return 0;
204 /* copy/pasted from cmos_init, should be made a general function
205 and used there as well */
206 static int pc_boot_set(void *opaque, const char *boot_device)
208 Monitor *mon = cur_mon;
209 #define PC_MAX_BOOT_DEVICES 3
210 RTCState *s = (RTCState *)opaque;
211 int nbds, bds[3] = { 0, };
212 int i;
214 nbds = strlen(boot_device);
215 if (nbds > PC_MAX_BOOT_DEVICES) {
216 monitor_printf(mon, "Too many boot devices for PC\n");
217 return(1);
219 for (i = 0; i < nbds; i++) {
220 bds[i] = boot_device2nibble(boot_device[i]);
221 if (bds[i] == 0) {
222 monitor_printf(mon, "Invalid boot device for PC: '%c'\n",
223 boot_device[i]);
224 return(1);
227 rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
228 rtc_set_memory(s, 0x38, (bds[2] << 4));
229 return(0);
232 /* hd_table must contain 4 block drivers */
233 static void cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
234 const char *boot_device, BlockDriverState **hd_table)
236 RTCState *s = rtc_state;
237 int nbds, bds[3] = { 0, };
238 int val;
239 int fd0, fd1, nb;
240 int i;
242 /* various important CMOS locations needed by PC/Bochs bios */
244 /* memory size */
245 val = 640; /* base memory in K */
246 rtc_set_memory(s, 0x15, val);
247 rtc_set_memory(s, 0x16, val >> 8);
249 val = (ram_size / 1024) - 1024;
250 if (val > 65535)
251 val = 65535;
252 rtc_set_memory(s, 0x17, val);
253 rtc_set_memory(s, 0x18, val >> 8);
254 rtc_set_memory(s, 0x30, val);
255 rtc_set_memory(s, 0x31, val >> 8);
257 if (above_4g_mem_size) {
258 rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16);
259 rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24);
260 rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32);
263 if (ram_size > (16 * 1024 * 1024))
264 val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
265 else
266 val = 0;
267 if (val > 65535)
268 val = 65535;
269 rtc_set_memory(s, 0x34, val);
270 rtc_set_memory(s, 0x35, val >> 8);
272 /* set the number of CPU */
273 rtc_set_memory(s, 0x5f, smp_cpus - 1);
275 /* set boot devices, and disable floppy signature check if requested */
276 #define PC_MAX_BOOT_DEVICES 3
277 nbds = strlen(boot_device);
278 if (nbds > PC_MAX_BOOT_DEVICES) {
279 fprintf(stderr, "Too many boot devices for PC\n");
280 exit(1);
282 for (i = 0; i < nbds; i++) {
283 bds[i] = boot_device2nibble(boot_device[i]);
284 if (bds[i] == 0) {
285 fprintf(stderr, "Invalid boot device for PC: '%c'\n",
286 boot_device[i]);
287 exit(1);
290 rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
291 rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1));
293 /* floppy type */
295 fd0 = fdctrl_get_drive_type(floppy_controller, 0);
296 fd1 = fdctrl_get_drive_type(floppy_controller, 1);
298 val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
299 rtc_set_memory(s, 0x10, val);
301 val = 0;
302 nb = 0;
303 if (fd0 < 3)
304 nb++;
305 if (fd1 < 3)
306 nb++;
307 switch (nb) {
308 case 0:
309 break;
310 case 1:
311 val |= 0x01; /* 1 drive, ready for boot */
312 break;
313 case 2:
314 val |= 0x41; /* 2 drives, ready for boot */
315 break;
317 val |= 0x02; /* FPU is there */
318 val |= 0x04; /* PS/2 mouse installed */
319 rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
321 /* hard drives */
323 rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
324 if (hd_table[0])
325 cmos_init_hd(0x19, 0x1b, hd_table[0]);
326 if (hd_table[1])
327 cmos_init_hd(0x1a, 0x24, hd_table[1]);
329 val = 0;
330 for (i = 0; i < 4; i++) {
331 if (hd_table[i]) {
332 int cylinders, heads, sectors, translation;
333 /* NOTE: bdrv_get_geometry_hint() returns the physical
334 geometry. It is always such that: 1 <= sects <= 63, 1
335 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
336 geometry can be different if a translation is done. */
337 translation = bdrv_get_translation_hint(hd_table[i]);
338 if (translation == BIOS_ATA_TRANSLATION_AUTO) {
339 bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
340 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
341 /* No translation. */
342 translation = 0;
343 } else {
344 /* LBA translation. */
345 translation = 1;
347 } else {
348 translation--;
350 val |= translation << (i * 2);
353 rtc_set_memory(s, 0x39, val);
356 void ioport_set_a20(int enable)
358 /* XXX: send to all CPUs ? */
359 cpu_x86_set_a20(first_cpu, enable);
362 int ioport_get_a20(void)
364 return ((first_cpu->a20_mask >> 20) & 1);
367 static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
369 ioport_set_a20((val >> 1) & 1);
370 /* XXX: bit 0 is fast reset */
373 static uint32_t ioport92_read(void *opaque, uint32_t addr)
375 return ioport_get_a20() << 1;
378 /***********************************************************/
379 /* Bochs BIOS debug ports */
381 static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
383 static const char shutdown_str[8] = "Shutdown";
384 static int shutdown_index = 0;
386 switch(addr) {
387 /* Bochs BIOS messages */
388 case 0x400:
389 case 0x401:
390 fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
391 exit(1);
392 case 0x402:
393 case 0x403:
394 #ifdef DEBUG_BIOS
395 fprintf(stderr, "%c", val);
396 #endif
397 break;
398 case 0x8900:
399 /* same as Bochs power off */
400 if (val == shutdown_str[shutdown_index]) {
401 shutdown_index++;
402 if (shutdown_index == 8) {
403 shutdown_index = 0;
404 qemu_system_shutdown_request();
406 } else {
407 shutdown_index = 0;
409 break;
411 /* LGPL'ed VGA BIOS messages */
412 case 0x501:
413 case 0x502:
414 fprintf(stderr, "VGA BIOS panic, line %d\n", val);
415 exit(1);
416 case 0x500:
417 case 0x503:
418 #ifdef DEBUG_BIOS
419 fprintf(stderr, "%c", val);
420 #endif
421 break;
425 static void bochs_bios_init(void)
427 void *fw_cfg;
429 register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
430 register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
431 register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
432 register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
433 register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
435 register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
436 register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
437 register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
438 register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
440 fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
441 fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
442 fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
443 fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, (uint8_t *)acpi_tables,
444 acpi_tables_len);
447 /* Generate an initial boot sector which sets state and jump to
448 a specified vector */
449 static void generate_bootsect(uint8_t *option_rom,
450 uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
452 uint8_t rom[512], *p, *reloc;
453 uint8_t sum;
454 int i;
456 memset(rom, 0, sizeof(rom));
458 p = rom;
459 /* Make sure we have an option rom signature */
460 *p++ = 0x55;
461 *p++ = 0xaa;
463 /* ROM size in sectors*/
464 *p++ = 1;
466 /* Hook int19 */
468 *p++ = 0x50; /* push ax */
469 *p++ = 0x1e; /* push ds */
470 *p++ = 0x31; *p++ = 0xc0; /* xor ax, ax */
471 *p++ = 0x8e; *p++ = 0xd8; /* mov ax, ds */
473 *p++ = 0xc7; *p++ = 0x06; /* movvw _start,0x64 */
474 *p++ = 0x64; *p++ = 0x00;
475 reloc = p;
476 *p++ = 0x00; *p++ = 0x00;
478 *p++ = 0x8c; *p++ = 0x0e; /* mov cs,0x66 */
479 *p++ = 0x66; *p++ = 0x00;
481 *p++ = 0x1f; /* pop ds */
482 *p++ = 0x58; /* pop ax */
483 *p++ = 0xcb; /* lret */
485 /* Actual code */
486 *reloc = (p - rom);
488 *p++ = 0xfa; /* CLI */
489 *p++ = 0xfc; /* CLD */
491 for (i = 0; i < 6; i++) {
492 if (i == 1) /* Skip CS */
493 continue;
495 *p++ = 0xb8; /* MOV AX,imm16 */
496 *p++ = segs[i];
497 *p++ = segs[i] >> 8;
498 *p++ = 0x8e; /* MOV <seg>,AX */
499 *p++ = 0xc0 + (i << 3);
502 for (i = 0; i < 8; i++) {
503 *p++ = 0x66; /* 32-bit operand size */
504 *p++ = 0xb8 + i; /* MOV <reg>,imm32 */
505 *p++ = gpr[i];
506 *p++ = gpr[i] >> 8;
507 *p++ = gpr[i] >> 16;
508 *p++ = gpr[i] >> 24;
511 *p++ = 0xea; /* JMP FAR */
512 *p++ = ip; /* IP */
513 *p++ = ip >> 8;
514 *p++ = segs[1]; /* CS */
515 *p++ = segs[1] >> 8;
517 /* sign rom */
518 sum = 0;
519 for (i = 0; i < (sizeof(rom) - 1); i++)
520 sum += rom[i];
521 rom[sizeof(rom) - 1] = -sum;
523 memcpy(option_rom, rom, sizeof(rom));
526 static long get_file_size(FILE *f)
528 long where, size;
530 /* XXX: on Unix systems, using fstat() probably makes more sense */
532 where = ftell(f);
533 fseek(f, 0, SEEK_END);
534 size = ftell(f);
535 fseek(f, where, SEEK_SET);
537 return size;
540 static void load_linux(uint8_t *option_rom,
541 const char *kernel_filename,
542 const char *initrd_filename,
543 const char *kernel_cmdline)
545 uint16_t protocol;
546 uint32_t gpr[8];
547 uint16_t seg[6];
548 uint16_t real_seg;
549 int setup_size, kernel_size, initrd_size, cmdline_size;
550 uint32_t initrd_max;
551 uint8_t header[1024];
552 target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr;
553 FILE *f, *fi;
555 /* Align to 16 bytes as a paranoia measure */
556 cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
558 /* load the kernel header */
559 f = fopen(kernel_filename, "rb");
560 if (!f || !(kernel_size = get_file_size(f)) ||
561 fread(header, 1, 1024, f) != 1024) {
562 fprintf(stderr, "qemu: could not load kernel '%s'\n",
563 kernel_filename);
564 exit(1);
567 /* kernel protocol version */
568 #if 0
569 fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
570 #endif
571 if (ldl_p(header+0x202) == 0x53726448)
572 protocol = lduw_p(header+0x206);
573 else
574 protocol = 0;
576 if (protocol < 0x200 || !(header[0x211] & 0x01)) {
577 /* Low kernel */
578 real_addr = 0x90000;
579 cmdline_addr = 0x9a000 - cmdline_size;
580 prot_addr = 0x10000;
581 } else if (protocol < 0x202) {
582 /* High but ancient kernel */
583 real_addr = 0x90000;
584 cmdline_addr = 0x9a000 - cmdline_size;
585 prot_addr = 0x100000;
586 } else {
587 /* High and recent kernel */
588 real_addr = 0x10000;
589 cmdline_addr = 0x20000;
590 prot_addr = 0x100000;
593 #if 0
594 fprintf(stderr,
595 "qemu: real_addr = 0x" TARGET_FMT_plx "\n"
596 "qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n"
597 "qemu: prot_addr = 0x" TARGET_FMT_plx "\n",
598 real_addr,
599 cmdline_addr,
600 prot_addr);
601 #endif
603 /* highest address for loading the initrd */
604 if (protocol >= 0x203)
605 initrd_max = ldl_p(header+0x22c);
606 else
607 initrd_max = 0x37ffffff;
609 if (initrd_max >= ram_size-ACPI_DATA_SIZE)
610 initrd_max = ram_size-ACPI_DATA_SIZE-1;
612 /* kernel command line */
613 pstrcpy_targphys(cmdline_addr, 4096, kernel_cmdline);
615 if (protocol >= 0x202) {
616 stl_p(header+0x228, cmdline_addr);
617 } else {
618 stw_p(header+0x20, 0xA33F);
619 stw_p(header+0x22, cmdline_addr-real_addr);
622 /* loader type */
623 /* High nybble = B reserved for Qemu; low nybble is revision number.
624 If this code is substantially changed, you may want to consider
625 incrementing the revision. */
626 if (protocol >= 0x200)
627 header[0x210] = 0xB0;
629 /* heap */
630 if (protocol >= 0x201) {
631 header[0x211] |= 0x80; /* CAN_USE_HEAP */
632 stw_p(header+0x224, cmdline_addr-real_addr-0x200);
635 /* load initrd */
636 if (initrd_filename) {
637 if (protocol < 0x200) {
638 fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
639 exit(1);
642 fi = fopen(initrd_filename, "rb");
643 if (!fi) {
644 fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
645 initrd_filename);
646 exit(1);
649 initrd_size = get_file_size(fi);
650 initrd_addr = (initrd_max-initrd_size) & ~4095;
652 fprintf(stderr, "qemu: loading initrd (%#x bytes) at 0x" TARGET_FMT_plx
653 "\n", initrd_size, initrd_addr);
655 if (!fread_targphys_ok(initrd_addr, initrd_size, fi)) {
656 fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
657 initrd_filename);
658 exit(1);
660 fclose(fi);
662 stl_p(header+0x218, initrd_addr);
663 stl_p(header+0x21c, initrd_size);
666 /* store the finalized header and load the rest of the kernel */
667 cpu_physical_memory_write(real_addr, header, 1024);
669 setup_size = header[0x1f1];
670 if (setup_size == 0)
671 setup_size = 4;
673 setup_size = (setup_size+1)*512;
674 kernel_size -= setup_size; /* Size of protected-mode code */
676 if (!fread_targphys_ok(real_addr+1024, setup_size-1024, f) ||
677 !fread_targphys_ok(prot_addr, kernel_size, f)) {
678 fprintf(stderr, "qemu: read error on kernel '%s'\n",
679 kernel_filename);
680 exit(1);
682 fclose(f);
684 /* generate bootsector to set up the initial register state */
685 real_seg = real_addr >> 4;
686 seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg;
687 seg[1] = real_seg+0x20; /* CS */
688 memset(gpr, 0, sizeof gpr);
689 gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */
691 generate_bootsect(option_rom, gpr, seg, 0);
694 static void main_cpu_reset(void *opaque)
696 CPUState *env = opaque;
697 cpu_reset(env);
700 static const int ide_iobase[2] = { 0x1f0, 0x170 };
701 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
702 static const int ide_irq[2] = { 14, 15 };
704 #define NE2000_NB_MAX 6
706 static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
707 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
709 static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
710 static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
712 static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
713 static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
715 #ifdef HAS_AUDIO
716 static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
718 struct soundhw *c;
719 int audio_enabled = 0;
721 for (c = soundhw; !audio_enabled && c->name; ++c) {
722 audio_enabled = c->enabled;
725 if (audio_enabled) {
726 AudioState *s;
728 s = AUD_init ();
729 if (s) {
730 for (c = soundhw; c->name; ++c) {
731 if (c->enabled) {
732 if (c->isa) {
733 c->init.init_isa (s, pic);
735 else {
736 if (pci_bus) {
737 c->init.init_pci (pci_bus, s);
745 #endif
747 static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic)
749 static int nb_ne2k = 0;
751 if (nb_ne2k == NE2000_NB_MAX)
752 return;
753 isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd);
754 nb_ne2k++;
757 /* PC hardware initialisation */
758 static void pc_init1(ram_addr_t ram_size, int vga_ram_size,
759 const char *boot_device,
760 const char *kernel_filename, const char *kernel_cmdline,
761 const char *initrd_filename,
762 int pci_enabled, const char *cpu_model)
764 char buf[1024];
765 int ret, linux_boot, i;
766 ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset;
767 ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
768 int bios_size, isa_bios_size, vga_bios_size;
769 PCIBus *pci_bus;
770 int piix3_devfn = -1;
771 CPUState *env;
772 qemu_irq *cpu_irq;
773 qemu_irq *i8259;
774 int index;
775 BlockDriverState *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
776 BlockDriverState *fd[MAX_FD];
778 if (ram_size >= 0xe0000000 ) {
779 above_4g_mem_size = ram_size - 0xe0000000;
780 below_4g_mem_size = 0xe0000000;
781 } else {
782 below_4g_mem_size = ram_size;
785 linux_boot = (kernel_filename != NULL);
787 /* init CPUs */
788 if (cpu_model == NULL) {
789 #ifdef TARGET_X86_64
790 cpu_model = "qemu64";
791 #else
792 cpu_model = "qemu32";
793 #endif
796 for(i = 0; i < smp_cpus; i++) {
797 env = cpu_init(cpu_model);
798 if (!env) {
799 fprintf(stderr, "Unable to find x86 CPU definition\n");
800 exit(1);
802 if (i != 0)
803 env->halted = 1;
804 if (smp_cpus > 1) {
805 /* XXX: enable it in all cases */
806 env->cpuid_features |= CPUID_APIC;
808 qemu_register_reset(main_cpu_reset, env);
809 if (pci_enabled) {
810 apic_init(env);
814 vmport_init();
816 /* allocate RAM */
817 ram_addr = qemu_ram_alloc(0xa0000);
818 cpu_register_physical_memory(0, 0xa0000, ram_addr);
820 /* Allocate, even though we won't register, so we don't break the
821 * phys_ram_base + PA assumption. This range includes vga (0xa0000 - 0xc0000),
822 * and some bios areas, which will be registered later
824 ram_addr = qemu_ram_alloc(0x100000 - 0xa0000);
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);
830 /* above 4giga memory allocation */
831 if (above_4g_mem_size > 0) {
832 ram_addr = qemu_ram_alloc(above_4g_mem_size);
833 cpu_register_physical_memory(0x100000000ULL,
834 above_4g_mem_size,
835 ram_addr);
839 /* allocate VGA RAM */
840 vga_ram_addr = qemu_ram_alloc(vga_ram_size);
842 /* BIOS load */
843 if (bios_name == NULL)
844 bios_name = BIOS_FILENAME;
845 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
846 bios_size = get_image_size(buf);
847 if (bios_size <= 0 ||
848 (bios_size % 65536) != 0) {
849 goto bios_error;
851 bios_offset = qemu_ram_alloc(bios_size);
852 ret = load_image(buf, phys_ram_base + bios_offset);
853 if (ret != bios_size) {
854 bios_error:
855 fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf);
856 exit(1);
859 if (cirrus_vga_enabled || std_vga_enabled || vmsvga_enabled) {
860 /* VGA BIOS load */
861 if (cirrus_vga_enabled) {
862 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME);
863 } else {
864 snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
866 vga_bios_size = get_image_size(buf);
867 if (vga_bios_size <= 0 || vga_bios_size > 65536)
868 goto vga_bios_error;
869 vga_bios_offset = qemu_ram_alloc(65536);
871 ret = load_image(buf, phys_ram_base + vga_bios_offset);
872 if (ret != vga_bios_size) {
873 vga_bios_error:
874 fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf);
875 exit(1);
878 /* setup basic memory access */
879 cpu_register_physical_memory(0xc0000, 0x10000,
880 vga_bios_offset | IO_MEM_ROM);
883 /* map the last 128KB of the BIOS in ISA space */
884 isa_bios_size = bios_size;
885 if (isa_bios_size > (128 * 1024))
886 isa_bios_size = 128 * 1024;
887 cpu_register_physical_memory(0x100000 - isa_bios_size,
888 isa_bios_size,
889 (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
892 ram_addr_t option_rom_offset;
893 int size, offset;
895 offset = 0;
896 if (linux_boot) {
897 option_rom_offset = qemu_ram_alloc(TARGET_PAGE_SIZE);
898 load_linux(phys_ram_base + option_rom_offset,
899 kernel_filename, initrd_filename, kernel_cmdline);
900 cpu_register_physical_memory(0xd0000, TARGET_PAGE_SIZE,
901 option_rom_offset | IO_MEM_ROM);
902 offset = TARGET_PAGE_SIZE;
905 for (i = 0; i < nb_option_roms; i++) {
906 size = get_image_size(option_rom[i]);
907 if (size < 0) {
908 fprintf(stderr, "Could not load option rom '%s'\n",
909 option_rom[i]);
910 exit(1);
912 if (size > (0x10000 - offset))
913 goto option_rom_error;
914 option_rom_offset = qemu_ram_alloc(size);
915 ret = load_image(option_rom[i], phys_ram_base + option_rom_offset);
916 if (ret != size) {
917 option_rom_error:
918 fprintf(stderr, "Too many option ROMS\n");
919 exit(1);
921 size = (size + 4095) & ~4095;
922 cpu_register_physical_memory(0xd0000 + offset,
923 size, option_rom_offset | IO_MEM_ROM);
924 offset += size;
928 /* map all the bios at the top of memory */
929 cpu_register_physical_memory((uint32_t)(-bios_size),
930 bios_size, bios_offset | IO_MEM_ROM);
932 bochs_bios_init();
934 cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1);
935 i8259 = i8259_init(cpu_irq[0]);
936 ferr_irq = i8259[13];
938 if (pci_enabled) {
939 pci_bus = i440fx_init(&i440fx_state, i8259);
940 piix3_devfn = piix3_init(pci_bus, -1);
941 } else {
942 pci_bus = NULL;
945 /* init basic PC hardware */
946 register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
948 register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
950 if (cirrus_vga_enabled) {
951 if (pci_enabled) {
952 pci_cirrus_vga_init(pci_bus,
953 phys_ram_base + vga_ram_addr,
954 vga_ram_addr, vga_ram_size);
955 } else {
956 isa_cirrus_vga_init(phys_ram_base + vga_ram_addr,
957 vga_ram_addr, vga_ram_size);
959 } else if (vmsvga_enabled) {
960 if (pci_enabled)
961 pci_vmsvga_init(pci_bus, phys_ram_base + vga_ram_addr,
962 vga_ram_addr, vga_ram_size);
963 else
964 fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
965 } else if (std_vga_enabled) {
966 if (pci_enabled) {
967 pci_vga_init(pci_bus, phys_ram_base + vga_ram_addr,
968 vga_ram_addr, vga_ram_size, 0, 0);
969 } else {
970 isa_vga_init(phys_ram_base + vga_ram_addr,
971 vga_ram_addr, vga_ram_size);
975 rtc_state = rtc_init(0x70, i8259[8], 2000);
977 qemu_register_boot_set(pc_boot_set, rtc_state);
979 register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
980 register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
982 if (pci_enabled) {
983 ioapic = ioapic_init();
985 pit = pit_init(0x40, i8259[0]);
986 pcspk_init(pit);
987 if (!no_hpet) {
988 hpet_init(i8259);
990 if (pci_enabled) {
991 pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic);
994 for(i = 0; i < MAX_SERIAL_PORTS; i++) {
995 if (serial_hds[i]) {
996 serial_init(serial_io[i], i8259[serial_irq[i]], 115200,
997 serial_hds[i]);
1001 for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
1002 if (parallel_hds[i]) {
1003 parallel_init(parallel_io[i], i8259[parallel_irq[i]],
1004 parallel_hds[i]);
1008 for(i = 0; i < nb_nics; i++) {
1009 NICInfo *nd = &nd_table[i];
1011 if (!pci_enabled || (nd->model && strcmp(nd->model, "ne2k_isa") == 0))
1012 pc_init_ne2k_isa(nd, i8259);
1013 else
1014 pci_nic_init(pci_bus, nd, -1, "ne2k_pci");
1017 qemu_system_hot_add_init();
1019 if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
1020 fprintf(stderr, "qemu: too many IDE bus\n");
1021 exit(1);
1024 for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
1025 index = drive_get_index(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
1026 if (index != -1)
1027 hd[i] = drives_table[index].bdrv;
1028 else
1029 hd[i] = NULL;
1032 if (pci_enabled) {
1033 pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1, i8259);
1034 } else {
1035 for(i = 0; i < MAX_IDE_BUS; i++) {
1036 isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
1037 hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
1041 i8042_init(i8259[1], i8259[12], 0x60);
1042 DMA_init(0);
1043 #ifdef HAS_AUDIO
1044 audio_init(pci_enabled ? pci_bus : NULL, i8259);
1045 #endif
1047 for(i = 0; i < MAX_FD; i++) {
1048 index = drive_get_index(IF_FLOPPY, 0, i);
1049 if (index != -1)
1050 fd[i] = drives_table[index].bdrv;
1051 else
1052 fd[i] = NULL;
1054 floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd);
1056 cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd);
1058 if (pci_enabled && usb_enabled) {
1059 usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
1062 if (pci_enabled && acpi_enabled) {
1063 uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
1064 i2c_bus *smbus;
1066 /* TODO: Populate SPD eeprom data. */
1067 smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100, i8259[9]);
1068 for (i = 0; i < 8; i++) {
1069 smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
1073 if (i440fx_state) {
1074 i440fx_init_memory_mappings(i440fx_state);
1077 if (pci_enabled) {
1078 int max_bus;
1079 int bus, unit;
1080 void *scsi;
1082 max_bus = drive_get_max_bus(IF_SCSI);
1084 for (bus = 0; bus <= max_bus; bus++) {
1085 scsi = lsi_scsi_init(pci_bus, -1);
1086 for (unit = 0; unit < LSI_MAX_DEVS; unit++) {
1087 index = drive_get_index(IF_SCSI, bus, unit);
1088 if (index == -1)
1089 continue;
1090 lsi_scsi_attach(scsi, drives_table[index].bdrv, unit);
1095 /* Add virtio block devices */
1096 if (pci_enabled) {
1097 int index;
1098 int unit_id = 0;
1100 while ((index = drive_get_index(IF_VIRTIO, 0, unit_id)) != -1) {
1101 virtio_blk_init(pci_bus, drives_table[index].bdrv);
1102 unit_id++;
1106 /* Add virtio balloon device */
1107 if (pci_enabled)
1108 virtio_balloon_init(pci_bus);
1110 /* Add virtio console devices */
1111 if (pci_enabled) {
1112 for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
1113 if (virtcon_hds[i])
1114 virtio_console_init(pci_bus, virtcon_hds[i]);
1119 static void pc_init_pci(ram_addr_t ram_size, int vga_ram_size,
1120 const char *boot_device,
1121 const char *kernel_filename,
1122 const char *kernel_cmdline,
1123 const char *initrd_filename,
1124 const char *cpu_model)
1126 pc_init1(ram_size, vga_ram_size, boot_device,
1127 kernel_filename, kernel_cmdline,
1128 initrd_filename, 1, cpu_model);
1131 static void pc_init_isa(ram_addr_t ram_size, int vga_ram_size,
1132 const char *boot_device,
1133 const char *kernel_filename,
1134 const char *kernel_cmdline,
1135 const char *initrd_filename,
1136 const char *cpu_model)
1138 pc_init1(ram_size, vga_ram_size, boot_device,
1139 kernel_filename, kernel_cmdline,
1140 initrd_filename, 0, cpu_model);
1143 /* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
1144 BIOS will read it and start S3 resume at POST Entry */
1145 void cmos_set_s3_resume(void)
1147 if (rtc_state)
1148 rtc_set_memory(rtc_state, 0xF, 0xFE);
1151 QEMUMachine pc_machine = {
1152 .name = "pc",
1153 .desc = "Standard PC",
1154 .init = pc_init_pci,
1155 .ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE,
1156 .max_cpus = 255,
1159 QEMUMachine isapc_machine = {
1160 .name = "isapc",
1161 .desc = "ISA-only PC",
1162 .init = pc_init_isa,
1163 .ram_require = VGA_RAM_SIZE + PC_MAX_BIOS_SIZE,
1164 .max_cpus = 1,