hw/pc.c

   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 "vl.h"
  25
  26 /* output Bochs bios info messages */
  27 //#define DEBUG_BIOS
  28
  29 #define BIOS_FILENAME "bios.bin"
  30 #define VGABIOS_FILENAME "vgabios.bin"
  31 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
  32
  33 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables.  */
  34 #define ACPI_DATA_SIZE       0x10000
  35
  36 static fdctrl_t *floppy_controller;
  37 static RTCState *rtc_state;
  38 static PITState *pit;
  39 static IOAPICState *ioapic;
  40 static PCIDevice *i440fx_state;
  41
  42 static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
  43 {
  44 }
  45
  46 /* MSDOS compatibility mode FPU exception support */
  47 static qemu_irq ferr_irq;
  48 /* XXX: add IGNNE support */
  49 void cpu_set_ferr(CPUX86State *s)
  50 {
  51     qemu_irq_raise(ferr_irq);
  52 }
  53
  54 static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
  55 {
  56     qemu_irq_lower(ferr_irq);
  57 }
  58
  59 /* TSC handling */
  60 uint64_t cpu_get_tsc(CPUX86State *env)
  61 {
  62     /* Note: when using kqemu, it is more logical to return the host TSC
  63        because kqemu does not trap the RDTSC instruction for
  64        performance reasons */
  65 #if USE_KQEMU
  66     if (env->kqemu_enabled) {
  67         return cpu_get_real_ticks();
  68     } else
  69 #endif
  70     {
  71         return cpu_get_ticks();
  72     }
  73 }
  74
  75 /* SMM support */
  76 void cpu_smm_update(CPUState *env)
  77 {
  78     if (i440fx_state && env == first_cpu)
  79         i440fx_set_smm(i440fx_state, (env->hflags >> HF_SMM_SHIFT) & 1);
  80 }
  81
  82
  83 /* IRQ handling */
  84 int cpu_get_pic_interrupt(CPUState *env)
  85 {
  86     int intno;
  87
  88     intno = apic_get_interrupt(env);
  89     if (intno >= 0) {
  90         /* set irq request if a PIC irq is still pending */
  91         /* XXX: improve that */
  92         pic_update_irq(isa_pic);
  93         return intno;
  94     }
  95     /* read the irq from the PIC */
  96     if (!apic_accept_pic_intr(env))
  97         return -1;
  98
  99     intno = pic_read_irq(isa_pic);
 100     return intno;
 101 }
 102
 103 static void pic_irq_request(void *opaque, int irq, int level)
 104 {
 105     CPUState *env = opaque;
 106     if (level && apic_accept_pic_intr(env))
 107         cpu_interrupt(env, CPU_INTERRUPT_HARD);
 108 }
 109
 110 /* PC cmos mappings */
 111
 112 #define REG_EQUIPMENT_BYTE          0x14
 113
 114 static int cmos_get_fd_drive_type(int fd0)
 115 {
 116     int val;
 117
 118     switch (fd0) {
 119     case 0:
 120         /* 1.44 Mb 3"5 drive */
 121         val = 4;
 122         break;
 123     case 1:
 124         /* 2.88 Mb 3"5 drive */
 125         val = 5;
 126         break;
 127     case 2:
 128         /* 1.2 Mb 5"5 drive */
 129         val = 2;
 130         break;
 131     default:
 132         val = 0;
 133         break;
 134     }
 135     return val;
 136 }
 137
 138 static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
 139 {
 140     RTCState *s = rtc_state;
 141     int cylinders, heads, sectors;
 142     bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
 143     rtc_set_memory(s, type_ofs, 47);
 144     rtc_set_memory(s, info_ofs, cylinders);
 145     rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
 146     rtc_set_memory(s, info_ofs + 2, heads);
 147     rtc_set_memory(s, info_ofs + 3, 0xff);
 148     rtc_set_memory(s, info_ofs + 4, 0xff);
 149     rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
 150     rtc_set_memory(s, info_ofs + 6, cylinders);
 151     rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
 152     rtc_set_memory(s, info_ofs + 8, sectors);
 153 }
 154
 155 /* convert boot_device letter to something recognizable by the bios */
 156 static int boot_device2nibble(char boot_device)
 157 {
 158     switch(boot_device) {
 159     case 'a':
 160     case 'b':
 161         return 0x01; /* floppy boot */
 162     case 'c':
 163         return 0x02; /* hard drive boot */
 164     case 'd':
 165         return 0x03; /* CD-ROM boot */
 166     case 'n':
 167         return 0x04; /* Network boot */
 168     }
 169     return 0;
 170 }
 171
 172 /* hd_table must contain 4 block drivers */
 173 static void cmos_init(int ram_size, const char *boot_device, BlockDriverState **hd_table)
 174 {
 175     RTCState *s = rtc_state;
 176     int val;
 177     int fd0, fd1, nb;
 178     int i;
 179
 180     /* various important CMOS locations needed by PC/Bochs bios */
 181
 182     /* memory size */
 183     val = 640; /* base memory in K */
 184     rtc_set_memory(s, 0x15, val);
 185     rtc_set_memory(s, 0x16, val >> 8);
 186
 187     val = (ram_size / 1024) - 1024;
 188     if (val > 65535)
 189         val = 65535;
 190     rtc_set_memory(s, 0x17, val);
 191     rtc_set_memory(s, 0x18, val >> 8);
 192     rtc_set_memory(s, 0x30, val);
 193     rtc_set_memory(s, 0x31, val >> 8);
 194
 195     if (ram_size > (16 * 1024 * 1024))
 196         val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
 197     else
 198         val = 0;
 199     if (val > 65535)
 200         val = 65535;
 201     rtc_set_memory(s, 0x34, val);
 202     rtc_set_memory(s, 0x35, val >> 8);
 203
 204     /* set boot devices, and disable floppy signature check if requested */
 205     rtc_set_memory(s, 0x3d,
 206             boot_device2nibble(boot_device[1]) << 4 |
 207             boot_device2nibble(boot_device[0]) );
 208     rtc_set_memory(s, 0x38,
 209             boot_device2nibble(boot_device[2]) << 4 | (fd_bootchk ?  0x0 : 0x1));
 210
 211     /* floppy type */
 212
 213     fd0 = fdctrl_get_drive_type(floppy_controller, 0);
 214     fd1 = fdctrl_get_drive_type(floppy_controller, 1);
 215
 216     val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
 217     rtc_set_memory(s, 0x10, val);
 218
 219     val = 0;
 220     nb = 0;
 221     if (fd0 < 3)
 222         nb++;
 223     if (fd1 < 3)
 224         nb++;
 225     switch (nb) {
 226     case 0:
 227         break;
 228     case 1:
 229         val |= 0x01; /* 1 drive, ready for boot */
 230         break;
 231     case 2:
 232         val |= 0x41; /* 2 drives, ready for boot */
 233         break;
 234     }
 235     val |= 0x02; /* FPU is there */
 236     val |= 0x04; /* PS/2 mouse installed */
 237     rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
 238
 239     /* hard drives */
 240
 241     rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
 242     if (hd_table[0])
 243         cmos_init_hd(0x19, 0x1b, hd_table[0]);
 244     if (hd_table[1])
 245         cmos_init_hd(0x1a, 0x24, hd_table[1]);
 246
 247     val = 0;
 248     for (i = 0; i < 4; i++) {
 249         if (hd_table[i]) {
 250             int cylinders, heads, sectors, translation;
 251             /* NOTE: bdrv_get_geometry_hint() returns the physical
 252                 geometry.  It is always such that: 1 <= sects <= 63, 1
 253                 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
 254                 geometry can be different if a translation is done. */
 255             translation = bdrv_get_translation_hint(hd_table[i]);
 256             if (translation == BIOS_ATA_TRANSLATION_AUTO) {
 257                 bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
 258                 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
 259                     /* No translation. */
 260                     translation = 0;
 261                 } else {
 262                     /* LBA translation. */
 263                     translation = 1;
 264                 }
 265             } else {
 266                 translation--;
 267             }
 268             val |= translation << (i * 2);
 269         }
 270     }
 271     rtc_set_memory(s, 0x39, val);
 272 }
 273
 274 void ioport_set_a20(int enable)
 275 {
 276     /* XXX: send to all CPUs ? */
 277     cpu_x86_set_a20(first_cpu, enable);
 278 }
 279
 280 int ioport_get_a20(void)
 281 {
 282     return ((first_cpu->a20_mask >> 20) & 1);
 283 }
 284
 285 static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
 286 {
 287     ioport_set_a20((val >> 1) & 1);
 288     /* XXX: bit 0 is fast reset */
 289 }
 290
 291 static uint32_t ioport92_read(void *opaque, uint32_t addr)
 292 {
 293     return ioport_get_a20() << 1;
 294 }
 295
 296 /***********************************************************/
 297 /* Bochs BIOS debug ports */
 298
 299 void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
 300 {
 301     static const char shutdown_str[8] = "Shutdown";
 302     static int shutdown_index = 0;
 303
 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();
 323             }
 324         } else {
 325             shutdown_index = 0;
 326         }
 327         break;
 328
 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;
 340     }
 341 }
 342
 343 void bochs_bios_init(void)
 344 {
 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);
 350
 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);
 355 }
 356
 357 /* Generate an initial boot sector which sets state and jump to
 358    a specified vector */
 359 static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
 360 {
 361     uint8_t bootsect[512], *p;
 362     int i;
 363
 364     if (bs_table[0] == NULL) {
 365         fprintf(stderr, "A disk image must be given for 'hda' when booting "
 366                 "a Linux kernel\n");
 367         exit(1);
 368     }
 369
 370     memset(bootsect, 0, sizeof(bootsect));
 371
 372     /* Copy the MSDOS partition table if possible */
 373     bdrv_read(bs_table[0], 0, bootsect, 1);
 374
 375     /* Make sure we have a partition signature */
 376     bootsect[510] = 0x55;
 377     bootsect[511] = 0xaa;
 378
 379     /* Actual code */
 380     p = bootsect;
 381     *p++ = 0xfa;                /* CLI */
 382     *p++ = 0xfc;                /* CLD */
 383
 384     for (i = 0; i < 6; i++) {
 385         if (i == 1)             /* Skip CS */
 386             continue;
 387
 388         *p++ = 0xb8;            /* MOV AX,imm16 */
 389         *p++ = segs[i];
 390         *p++ = segs[i] >> 8;
 391         *p++ = 0x8e;            /* MOV <seg>,AX */
 392         *p++ = 0xc0 + (i << 3);
 393     }
 394
 395     for (i = 0; i < 8; i++) {
 396         *p++ = 0x66;            /* 32-bit operand size */
 397         *p++ = 0xb8 + i;        /* MOV <reg>,imm32 */
 398         *p++ = gpr[i];
 399         *p++ = gpr[i] >> 8;
 400         *p++ = gpr[i] >> 16;
 401         *p++ = gpr[i] >> 24;
 402     }
 403
 404     *p++ = 0xea;                /* JMP FAR */
 405     *p++ = ip;                  /* IP */
 406     *p++ = ip >> 8;
 407     *p++ = segs[1];             /* CS */
 408     *p++ = segs[1] >> 8;
 409
 410     bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect));
 411 }
 412
 413 int load_kernel(const char *filename, uint8_t *addr,
 414                 uint8_t *real_addr)
 415 {
 416     int fd, size;
 417     int setup_sects;
 418
 419     fd = open(filename, O_RDONLY | O_BINARY);
 420     if (fd < 0)
 421         return -1;
 422
 423     /* load 16 bit code */
 424     if (read(fd, real_addr, 512) != 512)
 425         goto fail;
 426     setup_sects = real_addr[0x1F1];
 427     if (!setup_sects)
 428         setup_sects = 4;
 429     if (read(fd, real_addr + 512, setup_sects * 512) !=
 430         setup_sects * 512)
 431         goto fail;
 432
 433     /* load 32 bit code */
 434     size = read(fd, addr, 16 * 1024 * 1024);
 435     if (size < 0)
 436         goto fail;
 437     close(fd);
 438     return size;
 439  fail:
 440     close(fd);
 441     return -1;
 442 }
 443
 444 static long get_file_size(FILE *f)
 445 {
 446     long where, size;
 447
 448     /* XXX: on Unix systems, using fstat() probably makes more sense */
 449
 450     where = ftell(f);
 451     fseek(f, 0, SEEK_END);
 452     size = ftell(f);
 453     fseek(f, where, SEEK_SET);
 454
 455     return size;
 456 }
 457
 458 static void load_linux(const char *kernel_filename,
 459                        const char *initrd_filename,
 460                        const char *kernel_cmdline)
 461 {
 462     uint16_t protocol;
 463     uint32_t gpr[8];
 464     uint16_t seg[6];
 465     uint16_t real_seg;
 466     int setup_size, kernel_size, initrd_size, cmdline_size;
 467     uint32_t initrd_max;
 468     uint8_t header[1024];
 469     uint8_t *real_addr, *prot_addr, *cmdline_addr, *initrd_addr;
 470     FILE *f, *fi;
 471
 472     /* Align to 16 bytes as a paranoia measure */
 473     cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
 474
 475     /* load the kernel header */
 476     f = fopen(kernel_filename, "rb");
 477     if (!f || !(kernel_size = get_file_size(f)) ||
 478         fread(header, 1, 1024, f) != 1024) {
 479         fprintf(stderr, "qemu: could not load kernel '%s'\n",
 480                 kernel_filename);
 481         exit(1);
 482     }
 483
 484     /* kernel protocol version */
 485 #if 0
 486     fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
 487 #endif
 488     if (ldl_p(header+0x202) == 0x53726448)
 489         protocol = lduw_p(header+0x206);
 490     else
 491         protocol = 0;
 492
 493     if (protocol < 0x200 || !(header[0x211] & 0x01)) {
 494         /* Low kernel */
 495         real_addr    = phys_ram_base + 0x90000;
 496         cmdline_addr = phys_ram_base + 0x9a000 - cmdline_size;
 497         prot_addr    = phys_ram_base + 0x10000;
 498     } else if (protocol < 0x202) {
 499         /* High but ancient kernel */
 500         real_addr    = phys_ram_base + 0x90000;
 501         cmdline_addr = phys_ram_base + 0x9a000 - cmdline_size;
 502         prot_addr    = phys_ram_base + 0x100000;
 503     } else {
 504         /* High and recent kernel */
 505         real_addr    = phys_ram_base + 0x10000;
 506         cmdline_addr = phys_ram_base + 0x20000;
 507         prot_addr    = phys_ram_base + 0x100000;
 508     }
 509
 510 #if 0
 511     fprintf(stderr,
 512             "qemu: real_addr     = %#zx\n"
 513             "qemu: cmdline_addr  = %#zx\n"
 514             "qemu: prot_addr     = %#zx\n",
 515             real_addr-phys_ram_base,
 516             cmdline_addr-phys_ram_base,
 517             prot_addr-phys_ram_base);
 518 #endif
 519
 520     /* highest address for loading the initrd */
 521     if (protocol >= 0x203)
 522         initrd_max = ldl_p(header+0x22c);
 523     else
 524         initrd_max = 0x37ffffff;
 525
 526     if (initrd_max >= ram_size-ACPI_DATA_SIZE)
 527         initrd_max = ram_size-ACPI_DATA_SIZE-1;
 528
 529     /* kernel command line */
 530     pstrcpy(cmdline_addr, 4096, kernel_cmdline);
 531
 532     if (protocol >= 0x202) {
 533         stl_p(header+0x228, cmdline_addr-phys_ram_base);
 534     } else {
 535         stw_p(header+0x20, 0xA33F);
 536         stw_p(header+0x22, cmdline_addr-real_addr);
 537     }
 538
 539     /* loader type */
 540     /* High nybble = B reserved for Qemu; low nybble is revision number.
 541        If this code is substantially changed, you may want to consider
 542        incrementing the revision. */
 543     if (protocol >= 0x200)
 544         header[0x210] = 0xB0;
 545
 546     /* heap */
 547     if (protocol >= 0x201) {
 548         header[0x211] |= 0x80;  /* CAN_USE_HEAP */
 549         stw_p(header+0x224, cmdline_addr-real_addr-0x200);
 550     }
 551
 552     /* load initrd */
 553     if (initrd_filename) {
 554         if (protocol < 0x200) {
 555             fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
 556             exit(1);
 557         }
 558
 559         fi = fopen(initrd_filename, "rb");
 560         if (!fi) {
 561             fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 562                     initrd_filename);
 563             exit(1);
 564         }
 565
 566         initrd_size = get_file_size(fi);
 567         initrd_addr = phys_ram_base + ((initrd_max-initrd_size) & ~4095);
 568
 569         fprintf(stderr, "qemu: loading initrd (%#x bytes) at %#zx\n",
 570                 initrd_size, initrd_addr-phys_ram_base);
 571
 572         if (fread(initrd_addr, 1, initrd_size, fi) != initrd_size) {
 573             fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
 574                     initrd_filename);
 575             exit(1);
 576         }
 577         fclose(fi);
 578
 579         stl_p(header+0x218, initrd_addr-phys_ram_base);
 580         stl_p(header+0x21c, initrd_size);
 581     }
 582
 583     /* store the finalized header and load the rest of the kernel */
 584     memcpy(real_addr, header, 1024);
 585
 586     setup_size = header[0x1f1];
 587     if (setup_size == 0)
 588         setup_size = 4;
 589
 590     setup_size = (setup_size+1)*512;
 591     kernel_size -= setup_size;  /* Size of protected-mode code */
 592
 593     if (fread(real_addr+1024, 1, setup_size-1024, f) != setup_size-1024 ||
 594         fread(prot_addr, 1, kernel_size, f) != kernel_size) {
 595         fprintf(stderr, "qemu: read error on kernel '%s'\n",
 596                 kernel_filename);
 597         exit(1);
 598     }
 599     fclose(f);
 600
 601     /* generate bootsector to set up the initial register state */
 602     real_seg = (real_addr-phys_ram_base) >> 4;
 603     seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg;
 604     seg[1] = real_seg+0x20;     /* CS */
 605     memset(gpr, 0, sizeof gpr);
 606     gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */
 607
 608     generate_bootsect(gpr, seg, 0);
 609 }
 610
 611 static void main_cpu_reset(void *opaque)
 612 {
 613     CPUState *env = opaque;
 614     cpu_reset(env);
 615 }
 616
 617 static const int ide_iobase[2] = { 0x1f0, 0x170 };
 618 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
 619 static const int ide_irq[2] = { 14, 15 };
 620
 621 #define NE2000_NB_MAX 6
 622
 623 static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
 624 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
 625
 626 static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
 627 static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
 628
 629 static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
 630 static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
 631
 632 #ifdef HAS_AUDIO
 633 static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
 634 {
 635     struct soundhw *c;
 636     int audio_enabled = 0;
 637
 638     for (c = soundhw; !audio_enabled && c->name; ++c) {
 639         audio_enabled = c->enabled;
 640     }
 641
 642     if (audio_enabled) {
 643         AudioState *s;
 644
 645         s = AUD_init ();
 646         if (s) {
 647             for (c = soundhw; c->name; ++c) {
 648                 if (c->enabled) {
 649                     if (c->isa) {
 650                         c->init.init_isa (s, pic);
 651                     }
 652                     else {
 653                         if (pci_bus) {
 654                             c->init.init_pci (pci_bus, s);
 655                         }
 656                     }
 657                 }
 658             }
 659         }
 660     }
 661 }
 662 #endif
 663
 664 static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic)
 665 {
 666     static int nb_ne2k = 0;
 667
 668     if (nb_ne2k == NE2000_NB_MAX)
 669         return;
 670     isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd);
 671     nb_ne2k++;
 672 }
 673
 674 /* PC hardware initialisation */
 675 static void pc_init1(int ram_size, int vga_ram_size, const char *boot_device,
 676                      DisplayState *ds, const char **fd_filename, int snapshot,
 677                      const char *kernel_filename, const char *kernel_cmdline,
 678                      const char *initrd_filename,
 679                      int pci_enabled, const char *cpu_model)
 680 {
 681     char buf[1024];
 682     int ret, linux_boot, i;
 683     ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset;
 684     int bios_size, isa_bios_size, vga_bios_size;
 685     PCIBus *pci_bus;
 686     int piix3_devfn = -1;
 687     CPUState *env;
 688     NICInfo *nd;
 689     qemu_irq *cpu_irq;
 690     qemu_irq *i8259;
 691
 692     linux_boot = (kernel_filename != NULL);
 693
 694     /* init CPUs */
 695     if (cpu_model == NULL) {
 696 #ifdef TARGET_X86_64
 697         cpu_model = "qemu64";
 698 #else
 699         cpu_model = "qemu32";
 700 #endif
 701     }
 702
 703     for(i = 0; i < smp_cpus; i++) {
 704         env = cpu_init(cpu_model);
 705         if (!env) {
 706             fprintf(stderr, "Unable to find x86 CPU definition\n");
 707             exit(1);
 708         }
 709         if (i != 0)
 710             env->hflags |= HF_HALTED_MASK;
 711         if (smp_cpus > 1) {
 712             /* XXX: enable it in all cases */
 713             env->cpuid_features |= CPUID_APIC;
 714         }
 715         register_savevm("cpu", i, 4, cpu_save, cpu_load, env);
 716         qemu_register_reset(main_cpu_reset, env);
 717         if (pci_enabled) {
 718             apic_init(env);
 719         }
 720         vmport_init(env);
 721     }
 722
 723     /* allocate RAM */
 724     ram_addr = qemu_ram_alloc(ram_size);
 725     cpu_register_physical_memory(0, ram_size, ram_addr);
 726
 727     /* allocate VGA RAM */
 728     vga_ram_addr = qemu_ram_alloc(vga_ram_size);
 729
 730     /* BIOS load */
 731     if (bios_name == NULL)
 732         bios_name = BIOS_FILENAME;
 733     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
 734     bios_size = get_image_size(buf);
 735     if (bios_size <= 0 ||
 736         (bios_size % 65536) != 0) {
 737         goto bios_error;
 738     }
 739     bios_offset = qemu_ram_alloc(bios_size);
 740     ret = load_image(buf, phys_ram_base + bios_offset);
 741     if (ret != bios_size) {
 742     bios_error:
 743         fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf);
 744         exit(1);
 745     }
 746
 747     /* VGA BIOS load */
 748     if (cirrus_vga_enabled) {
 749         snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME);
 750     } else {
 751         snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
 752     }
 753     vga_bios_size = get_image_size(buf);
 754     if (vga_bios_size <= 0 || vga_bios_size > 65536)
 755         goto vga_bios_error;
 756     vga_bios_offset = qemu_ram_alloc(65536);
 757
 758     ret = load_image(buf, phys_ram_base + vga_bios_offset);
 759     if (ret != vga_bios_size) {
 760     vga_bios_error:
 761         fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf);
 762         exit(1);
 763     }
 764
 765     /* setup basic memory access */
 766     cpu_register_physical_memory(0xc0000, 0x10000,
 767                                  vga_bios_offset | IO_MEM_ROM);
 768
 769     /* map the last 128KB of the BIOS in ISA space */
 770     isa_bios_size = bios_size;
 771     if (isa_bios_size > (128 * 1024))
 772         isa_bios_size = 128 * 1024;
 773     cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size,
 774                                  IO_MEM_UNASSIGNED);
 775     cpu_register_physical_memory(0x100000 - isa_bios_size,
 776                                  isa_bios_size,
 777                                  (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
 778
 779     {
 780         ram_addr_t option_rom_offset;
 781         int size, offset;
 782
 783         offset = 0;
 784         for (i = 0; i < nb_option_roms; i++) {
 785             size = get_image_size(option_rom[i]);
 786             if (size < 0) {
 787                 fprintf(stderr, "Could not load option rom '%s'\n",
 788                         option_rom[i]);
 789                 exit(1);
 790             }
 791             if (size > (0x10000 - offset))
 792                 goto option_rom_error;
 793             option_rom_offset = qemu_ram_alloc(size);
 794             ret = load_image(option_rom[i], phys_ram_base + option_rom_offset);
 795             if (ret != size) {
 796             option_rom_error:
 797                 fprintf(stderr, "Too many option ROMS\n");
 798                 exit(1);
 799             }
 800             size = (size + 4095) & ~4095;
 801             cpu_register_physical_memory(0xd0000 + offset,
 802                                          size, option_rom_offset | IO_MEM_ROM);
 803             offset += size;
 804         }
 805     }
 806
 807     /* map all the bios at the top of memory */
 808     cpu_register_physical_memory((uint32_t)(-bios_size),
 809                                  bios_size, bios_offset | IO_MEM_ROM);
 810
 811     bochs_bios_init();
 812
 813     if (linux_boot)
 814         load_linux(kernel_filename, initrd_filename, kernel_cmdline);
 815
 816     cpu_irq = qemu_allocate_irqs(pic_irq_request, first_cpu, 1);
 817     i8259 = i8259_init(cpu_irq[0]);
 818     ferr_irq = i8259[13];
 819
 820     if (pci_enabled) {
 821         pci_bus = i440fx_init(&i440fx_state, i8259);
 822         piix3_devfn = piix3_init(pci_bus, -1);
 823     } else {
 824         pci_bus = NULL;
 825     }
 826
 827     /* init basic PC hardware */
 828     register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
 829
 830     register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
 831
 832     if (cirrus_vga_enabled) {
 833         if (pci_enabled) {
 834             pci_cirrus_vga_init(pci_bus,
 835                                 ds, phys_ram_base + vga_ram_addr,
 836                                 vga_ram_addr, vga_ram_size);
 837         } else {
 838             isa_cirrus_vga_init(ds, phys_ram_base + vga_ram_addr,
 839                                 vga_ram_addr, vga_ram_size);
 840         }
 841     } else if (vmsvga_enabled) {
 842         if (pci_enabled)
 843             pci_vmsvga_init(pci_bus, ds, phys_ram_base + ram_size,
 844                             ram_size, vga_ram_size);
 845         else
 846             fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
 847     } else {
 848         if (pci_enabled) {
 849             pci_vga_init(pci_bus, ds, phys_ram_base + vga_ram_addr,
 850                          vga_ram_addr, vga_ram_size, 0, 0);
 851         } else {
 852             isa_vga_init(ds, phys_ram_base + vga_ram_addr,
 853                          vga_ram_addr, vga_ram_size);
 854         }
 855     }
 856
 857     rtc_state = rtc_init(0x70, i8259[8]);
 858
 859     register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
 860     register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
 861
 862     if (pci_enabled) {
 863         ioapic = ioapic_init();
 864     }
 865     pit = pit_init(0x40, i8259[0]);
 866     pcspk_init(pit);
 867     if (pci_enabled) {
 868         pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic);
 869     }
 870
 871     for(i = 0; i < MAX_SERIAL_PORTS; i++) {
 872         if (serial_hds[i]) {
 873             serial_init(serial_io[i], i8259[serial_irq[i]], serial_hds[i]);
 874         }
 875     }
 876
 877     for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
 878         if (parallel_hds[i]) {
 879             parallel_init(parallel_io[i], i8259[parallel_irq[i]],
 880                           parallel_hds[i]);
 881         }
 882     }
 883
 884     for(i = 0; i < nb_nics; i++) {
 885         nd = &nd_table[i];
 886         if (!nd->model) {
 887             if (pci_enabled) {
 888                 nd->model = "ne2k_pci";
 889             } else {
 890                 nd->model = "ne2k_isa";
 891             }
 892         }
 893         if (strcmp(nd->model, "ne2k_isa") == 0) {
 894             pc_init_ne2k_isa(nd, i8259);
 895         } else if (pci_enabled) {
 896             if (strcmp(nd->model, "?") == 0)
 897                 fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
 898             pci_nic_init(pci_bus, nd, -1);
 899         } else if (strcmp(nd->model, "?") == 0) {
 900             fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
 901             exit(1);
 902         } else {
 903             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
 904             exit(1);
 905         }
 906     }
 907
 908     if (pci_enabled) {
 909         pci_piix3_ide_init(pci_bus, bs_table, piix3_devfn + 1, i8259);
 910     } else {
 911         for(i = 0; i < 2; i++) {
 912             isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
 913                          bs_table[2 * i], bs_table[2 * i + 1]);
 914         }
 915     }
 916
 917     i8042_init(i8259[1], i8259[12], 0x60);
 918     DMA_init(0);
 919 #ifdef HAS_AUDIO
 920     audio_init(pci_enabled ? pci_bus : NULL, i8259);
 921 #endif
 922
 923     floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd_table);
 924
 925     cmos_init(ram_size, boot_device, bs_table);
 926
 927     if (pci_enabled && usb_enabled) {
 928         usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
 929     }
 930
 931     if (pci_enabled && acpi_enabled) {
 932         uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
 933         i2c_bus *smbus;
 934
 935         /* TODO: Populate SPD eeprom data.  */
 936         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100);
 937         for (i = 0; i < 8; i++) {
 938             smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
 939         }
 940     }
 941
 942     if (i440fx_state) {
 943         i440fx_init_memory_mappings(i440fx_state);
 944     }
 945 #if 0
 946     /* ??? Need to figure out some way for the user to
 947        specify SCSI devices.  */
 948     if (pci_enabled) {
 949         void *scsi;
 950         BlockDriverState *bdrv;
 951
 952         scsi = lsi_scsi_init(pci_bus, -1);
 953         bdrv = bdrv_new("scsidisk");
 954         bdrv_open(bdrv, "scsi_disk.img", 0);
 955         lsi_scsi_attach(scsi, bdrv, -1);
 956         bdrv = bdrv_new("scsicd");
 957         bdrv_open(bdrv, "scsi_cd.iso", 0);
 958         bdrv_set_type_hint(bdrv, BDRV_TYPE_CDROM);
 959         lsi_scsi_attach(scsi, bdrv, -1);
 960     }
 961 #endif
 962 }
 963
 964 static void pc_init_pci(int ram_size, int vga_ram_size, const char *boot_device,
 965                         DisplayState *ds, const char **fd_filename,
 966                         int snapshot,
 967                         const char *kernel_filename,
 968                         const char *kernel_cmdline,
 969                         const char *initrd_filename,
 970                         const char *cpu_model)
 971 {
 972     pc_init1(ram_size, vga_ram_size, boot_device,
 973              ds, fd_filename, snapshot,
 974              kernel_filename, kernel_cmdline,
 975              initrd_filename, 1, cpu_model);
 976 }
 977
 978 static void pc_init_isa(int ram_size, int vga_ram_size, const char *boot_device,
 979                         DisplayState *ds, const char **fd_filename,
 980                         int snapshot,
 981                         const char *kernel_filename,
 982                         const char *kernel_cmdline,
 983                         const char *initrd_filename,
 984                         const char *cpu_model)
 985 {
 986     pc_init1(ram_size, vga_ram_size, boot_device,
 987              ds, fd_filename, snapshot,
 988              kernel_filename, kernel_cmdline,
 989              initrd_filename, 0, cpu_model);
 990 }
 991
 992 QEMUMachine pc_machine = {
 993     "pc",
 994     "Standard PC",
 995     pc_init_pci,
 996 };
 997
 998 QEMUMachine isapc_machine = {
 999     "isapc",
1000     "ISA-only PC",
1001     pc_init_isa,
1002 };