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     intno = pic_read_irq(isa_pic);
  97     return intno;
  98 }
  99
 100 static void pic_irq_request(void *opaque, int irq, int level)
 101 {
 102     CPUState *env = opaque;
 103     if (level)
 104         cpu_interrupt(env, CPU_INTERRUPT_HARD);
 105     else
 106         cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
 107 }
 108
 109 /* PC cmos mappings */
 110
 111 #define REG_EQUIPMENT_BYTE          0x14
 112
 113 static int cmos_get_fd_drive_type(int fd0)
 114 {
 115     int val;
 116
 117     switch (fd0) {
 118     case 0:
 119         /* 1.44 Mb 3"5 drive */
 120         val = 4;
 121         break;
 122     case 1:
 123         /* 2.88 Mb 3"5 drive */
 124         val = 5;
 125         break;
 126     case 2:
 127         /* 1.2 Mb 5"5 drive */
 128         val = 2;
 129         break;
 130     default:
 131         val = 0;
 132         break;
 133     }
 134     return val;
 135 }
 136
 137 static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
 138 {
 139     RTCState *s = rtc_state;
 140     int cylinders, heads, sectors;
 141     bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
 142     rtc_set_memory(s, type_ofs, 47);
 143     rtc_set_memory(s, info_ofs, cylinders);
 144     rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
 145     rtc_set_memory(s, info_ofs + 2, heads);
 146     rtc_set_memory(s, info_ofs + 3, 0xff);
 147     rtc_set_memory(s, info_ofs + 4, 0xff);
 148     rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
 149     rtc_set_memory(s, info_ofs + 6, cylinders);
 150     rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
 151     rtc_set_memory(s, info_ofs + 8, sectors);
 152 }
 153
 154 /* hd_table must contain 4 block drivers */
 155 static void cmos_init(int ram_size, int boot_device, BlockDriverState **hd_table)
 156 {
 157     RTCState *s = rtc_state;
 158     int val;
 159     int fd0, fd1, nb;
 160     int i;
 161
 162     /* various important CMOS locations needed by PC/Bochs bios */
 163
 164     /* memory size */
 165     val = 640; /* base memory in K */
 166     rtc_set_memory(s, 0x15, val);
 167     rtc_set_memory(s, 0x16, val >> 8);
 168
 169     val = (ram_size / 1024) - 1024;
 170     if (val > 65535)
 171         val = 65535;
 172     rtc_set_memory(s, 0x17, val);
 173     rtc_set_memory(s, 0x18, val >> 8);
 174     rtc_set_memory(s, 0x30, val);
 175     rtc_set_memory(s, 0x31, val >> 8);
 176
 177     if (ram_size > (16 * 1024 * 1024))
 178         val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
 179     else
 180         val = 0;
 181     if (val > 65535)
 182         val = 65535;
 183     rtc_set_memory(s, 0x34, val);
 184     rtc_set_memory(s, 0x35, val >> 8);
 185
 186     switch(boot_device) {
 187     case 'a':
 188     case 'b':
 189         rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */
 190         if (!fd_bootchk)
 191             rtc_set_memory(s, 0x38, 0x01); /* disable signature check */
 192         break;
 193     default:
 194     case 'c':
 195         rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */
 196         break;
 197     case 'd':
 198         rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */
 199         break;
 200     }
 201
 202     /* floppy type */
 203
 204     fd0 = fdctrl_get_drive_type(floppy_controller, 0);
 205     fd1 = fdctrl_get_drive_type(floppy_controller, 1);
 206
 207     val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
 208     rtc_set_memory(s, 0x10, val);
 209
 210     val = 0;
 211     nb = 0;
 212     if (fd0 < 3)
 213         nb++;
 214     if (fd1 < 3)
 215         nb++;
 216     switch (nb) {
 217     case 0:
 218         break;
 219     case 1:
 220         val |= 0x01; /* 1 drive, ready for boot */
 221         break;
 222     case 2:
 223         val |= 0x41; /* 2 drives, ready for boot */
 224         break;
 225     }
 226     val |= 0x02; /* FPU is there */
 227     val |= 0x04; /* PS/2 mouse installed */
 228     rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
 229
 230     /* hard drives */
 231
 232     rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
 233     if (hd_table[0])
 234         cmos_init_hd(0x19, 0x1b, hd_table[0]);
 235     if (hd_table[1])
 236         cmos_init_hd(0x1a, 0x24, hd_table[1]);
 237
 238     val = 0;
 239     for (i = 0; i < 4; i++) {
 240         if (hd_table[i]) {
 241             int cylinders, heads, sectors, translation;
 242             /* NOTE: bdrv_get_geometry_hint() returns the physical
 243                 geometry.  It is always such that: 1 <= sects <= 63, 1
 244                 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
 245                 geometry can be different if a translation is done. */
 246             translation = bdrv_get_translation_hint(hd_table[i]);
 247             if (translation == BIOS_ATA_TRANSLATION_AUTO) {
 248                 bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
 249                 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
 250                     /* No translation. */
 251                     translation = 0;
 252                 } else {
 253                     /* LBA translation. */
 254                     translation = 1;
 255                 }
 256             } else {
 257                 translation--;
 258             }
 259             val |= translation << (i * 2);
 260         }
 261     }
 262     rtc_set_memory(s, 0x39, val);
 263 }
 264
 265 void ioport_set_a20(int enable)
 266 {
 267     /* XXX: send to all CPUs ? */
 268     cpu_x86_set_a20(first_cpu, enable);
 269 }
 270
 271 int ioport_get_a20(void)
 272 {
 273     return ((first_cpu->a20_mask >> 20) & 1);
 274 }
 275
 276 static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
 277 {
 278     ioport_set_a20((val >> 1) & 1);
 279     /* XXX: bit 0 is fast reset */
 280 }
 281
 282 static uint32_t ioport92_read(void *opaque, uint32_t addr)
 283 {
 284     return ioport_get_a20() << 1;
 285 }
 286
 287 /***********************************************************/
 288 /* Bochs BIOS debug ports */
 289
 290 void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
 291 {
 292     static const char shutdown_str[8] = "Shutdown";
 293     static int shutdown_index = 0;
 294
 295     switch(addr) {
 296         /* Bochs BIOS messages */
 297     case 0x400:
 298     case 0x401:
 299         fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
 300         exit(1);
 301     case 0x402:
 302     case 0x403:
 303 #ifdef DEBUG_BIOS
 304         fprintf(stderr, "%c", val);
 305 #endif
 306         break;
 307     case 0x8900:
 308         /* same as Bochs power off */
 309         if (val == shutdown_str[shutdown_index]) {
 310             shutdown_index++;
 311             if (shutdown_index == 8) {
 312                 shutdown_index = 0;
 313                 qemu_system_shutdown_request();
 314             }
 315         } else {
 316             shutdown_index = 0;
 317         }
 318         break;
 319
 320         /* LGPL'ed VGA BIOS messages */
 321     case 0x501:
 322     case 0x502:
 323         fprintf(stderr, "VGA BIOS panic, line %d\n", val);
 324         exit(1);
 325     case 0x500:
 326     case 0x503:
 327 #ifdef DEBUG_BIOS
 328         fprintf(stderr, "%c", val);
 329 #endif
 330         break;
 331     }
 332 }
 333
 334 void bochs_bios_init(void)
 335 {
 336     register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
 337     register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
 338     register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
 339     register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
 340     register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
 341
 342     register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
 343     register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
 344     register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
 345     register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
 346 }
 347
 348 /* Generate an initial boot sector which sets state and jump to
 349    a specified vector */
 350 static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
 351 {
 352     uint8_t bootsect[512], *p;
 353     int i;
 354
 355     if (bs_table[0] == NULL) {
 356         fprintf(stderr, "A disk image must be given for 'hda' when booting "
 357                 "a Linux kernel\n");
 358         exit(1);
 359     }
 360
 361     memset(bootsect, 0, sizeof(bootsect));
 362
 363     /* Copy the MSDOS partition table if possible */
 364     bdrv_read(bs_table[0], 0, bootsect, 1);
 365
 366     /* Make sure we have a partition signature */
 367     bootsect[510] = 0x55;
 368     bootsect[511] = 0xaa;
 369
 370     /* Actual code */
 371     p = bootsect;
 372     *p++ = 0xfa;                /* CLI */
 373     *p++ = 0xfc;                /* CLD */
 374
 375     for (i = 0; i < 6; i++) {
 376         if (i == 1)             /* Skip CS */
 377             continue;
 378
 379         *p++ = 0xb8;            /* MOV AX,imm16 */
 380         *p++ = segs[i];
 381         *p++ = segs[i] >> 8;
 382         *p++ = 0x8e;            /* MOV <seg>,AX */
 383         *p++ = 0xc0 + (i << 3);
 384     }
 385
 386     for (i = 0; i < 8; i++) {
 387         *p++ = 0x66;            /* 32-bit operand size */
 388         *p++ = 0xb8 + i;        /* MOV <reg>,imm32 */
 389         *p++ = gpr[i];
 390         *p++ = gpr[i] >> 8;
 391         *p++ = gpr[i] >> 16;
 392         *p++ = gpr[i] >> 24;
 393     }
 394
 395     *p++ = 0xea;                /* JMP FAR */
 396     *p++ = ip;                  /* IP */
 397     *p++ = ip >> 8;
 398     *p++ = segs[1];             /* CS */
 399     *p++ = segs[1] >> 8;
 400
 401     bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect));
 402 }
 403
 404 int load_kernel(const char *filename, uint8_t *addr,
 405                 uint8_t *real_addr)
 406 {
 407     int fd, size;
 408     int setup_sects;
 409
 410     fd = open(filename, O_RDONLY | O_BINARY);
 411     if (fd < 0)
 412         return -1;
 413
 414     /* load 16 bit code */
 415     if (read(fd, real_addr, 512) != 512)
 416         goto fail;
 417     setup_sects = real_addr[0x1F1];
 418     if (!setup_sects)
 419         setup_sects = 4;
 420     if (read(fd, real_addr + 512, setup_sects * 512) !=
 421         setup_sects * 512)
 422         goto fail;
 423
 424     /* load 32 bit code */
 425     size = read(fd, addr, 16 * 1024 * 1024);
 426     if (size < 0)
 427         goto fail;
 428     close(fd);
 429     return size;
 430  fail:
 431     close(fd);
 432     return -1;
 433 }
 434
 435 static long get_file_size(FILE *f)
 436 {
 437     long where, size;
 438
 439     /* XXX: on Unix systems, using fstat() probably makes more sense */
 440
 441     where = ftell(f);
 442     fseek(f, 0, SEEK_END);
 443     size = ftell(f);
 444     fseek(f, where, SEEK_SET);
 445
 446     return size;
 447 }
 448
 449 static void load_linux(const char *kernel_filename,
 450                        const char *initrd_filename,
 451                        const char *kernel_cmdline)
 452 {
 453     uint16_t protocol;
 454     uint32_t gpr[8];
 455     uint16_t seg[6];
 456     uint16_t real_seg;
 457     int setup_size, kernel_size, initrd_size, cmdline_size;
 458     uint32_t initrd_max;
 459     uint8_t header[1024];
 460     uint8_t *real_addr, *prot_addr, *cmdline_addr, *initrd_addr;
 461     FILE *f, *fi;
 462
 463     /* Align to 16 bytes as a paranoia measure */
 464     cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
 465
 466     /* load the kernel header */
 467     f = fopen(kernel_filename, "rb");
 468     if (!f || !(kernel_size = get_file_size(f)) ||
 469         fread(header, 1, 1024, f) != 1024) {
 470         fprintf(stderr, "qemu: could not load kernel '%s'\n",
 471                 kernel_filename);
 472         exit(1);
 473     }
 474
 475     /* kernel protocol version */
 476     fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
 477     if (ldl_p(header+0x202) == 0x53726448)
 478         protocol = lduw_p(header+0x206);
 479     else
 480         protocol = 0;
 481
 482     if (protocol < 0x200 || !(header[0x211] & 0x01)) {
 483         /* Low kernel */
 484         real_addr    = phys_ram_base + 0x90000;
 485         cmdline_addr = phys_ram_base + 0x9a000 - cmdline_size;
 486         prot_addr    = phys_ram_base + 0x10000;
 487     } else if (protocol < 0x202) {
 488         /* High but ancient kernel */
 489         real_addr    = phys_ram_base + 0x90000;
 490         cmdline_addr = phys_ram_base + 0x9a000 - cmdline_size;
 491         prot_addr    = phys_ram_base + 0x100000;
 492     } else {
 493         /* High and recent kernel */
 494         real_addr    = phys_ram_base + 0x10000;
 495         cmdline_addr = phys_ram_base + 0x20000;
 496         prot_addr    = phys_ram_base + 0x100000;
 497     }
 498
 499     fprintf(stderr,
 500             "qemu: real_addr     = %#zx\n"
 501             "qemu: cmdline_addr  = %#zx\n"
 502             "qemu: prot_addr     = %#zx\n",
 503             real_addr-phys_ram_base,
 504             cmdline_addr-phys_ram_base,
 505             prot_addr-phys_ram_base);
 506
 507     /* highest address for loading the initrd */
 508     if (protocol >= 0x203)
 509         initrd_max = ldl_p(header+0x22c);
 510     else
 511         initrd_max = 0x37ffffff;
 512
 513     if (initrd_max >= ram_size-ACPI_DATA_SIZE)
 514         initrd_max = ram_size-ACPI_DATA_SIZE-1;
 515
 516     /* kernel command line */
 517     pstrcpy(cmdline_addr, 4096, kernel_cmdline);
 518
 519     if (protocol >= 0x202) {
 520         stl_p(header+0x228, cmdline_addr-phys_ram_base);
 521     } else {
 522         stw_p(header+0x20, 0xA33F);
 523         stw_p(header+0x22, cmdline_addr-real_addr);
 524     }
 525
 526     /* loader type */
 527     /* High nybble = B reserved for Qemu; low nybble is revision number.
 528        If this code is substantially changed, you may want to consider
 529        incrementing the revision. */
 530     if (protocol >= 0x200)
 531         header[0x210] = 0xB0;
 532
 533     /* heap */
 534     if (protocol >= 0x201) {
 535         header[0x211] |= 0x80;  /* CAN_USE_HEAP */
 536         stw_p(header+0x224, cmdline_addr-real_addr-0x200);
 537     }
 538
 539     /* load initrd */
 540     if (initrd_filename) {
 541         if (protocol < 0x200) {
 542             fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
 543             exit(1);
 544         }
 545
 546         fi = fopen(initrd_filename, "rb");
 547         if (!fi) {
 548             fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 549                     initrd_filename);
 550             exit(1);
 551         }
 552
 553         initrd_size = get_file_size(fi);
 554         initrd_addr = phys_ram_base + ((initrd_max-initrd_size) & ~4095);
 555
 556         fprintf(stderr, "qemu: loading initrd (%#x bytes) at %#zx\n",
 557                 initrd_size, initrd_addr-phys_ram_base);
 558
 559         if (fread(initrd_addr, 1, initrd_size, fi) != initrd_size) {
 560             fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
 561                     initrd_filename);
 562             exit(1);
 563         }
 564         fclose(fi);
 565
 566         stl_p(header+0x218, initrd_addr-phys_ram_base);
 567         stl_p(header+0x21c, initrd_size);
 568     }
 569
 570     /* store the finalized header and load the rest of the kernel */
 571     memcpy(real_addr, header, 1024);
 572
 573     setup_size = header[0x1f1];
 574     if (setup_size == 0)
 575         setup_size = 4;
 576
 577     setup_size = (setup_size+1)*512;
 578     kernel_size -= setup_size;  /* Size of protected-mode code */
 579
 580     if (fread(real_addr+1024, 1, setup_size-1024, f) != setup_size-1024 ||
 581         fread(prot_addr, 1, kernel_size, f) != kernel_size) {
 582         fprintf(stderr, "qemu: read error on kernel '%s'\n",
 583                 kernel_filename);
 584         exit(1);
 585     }
 586     fclose(f);
 587
 588     /* generate bootsector to set up the initial register state */
 589     real_seg = (real_addr-phys_ram_base) >> 4;
 590     seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg;
 591     seg[1] = real_seg+0x20;     /* CS */
 592     memset(gpr, 0, sizeof gpr);
 593     gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */
 594
 595     generate_bootsect(gpr, seg, 0);
 596 }
 597
 598 static void main_cpu_reset(void *opaque)
 599 {
 600     CPUState *env = opaque;
 601     cpu_reset(env);
 602 }
 603
 604 static const int ide_iobase[2] = { 0x1f0, 0x170 };
 605 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
 606 static const int ide_irq[2] = { 14, 15 };
 607
 608 #define NE2000_NB_MAX 6
 609
 610 static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
 611 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
 612
 613 static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
 614 static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
 615
 616 static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
 617 static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
 618
 619 #ifdef HAS_AUDIO
 620 static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
 621 {
 622     struct soundhw *c;
 623     int audio_enabled = 0;
 624
 625     for (c = soundhw; !audio_enabled && c->name; ++c) {
 626         audio_enabled = c->enabled;
 627     }
 628
 629     if (audio_enabled) {
 630         AudioState *s;
 631
 632         s = AUD_init ();
 633         if (s) {
 634             for (c = soundhw; c->name; ++c) {
 635                 if (c->enabled) {
 636                     if (c->isa) {
 637                         c->init.init_isa (s, pic);
 638                     }
 639                     else {
 640                         if (pci_bus) {
 641                             c->init.init_pci (pci_bus, s);
 642                         }
 643                     }
 644                 }
 645             }
 646         }
 647     }
 648 }
 649 #endif
 650
 651 static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic)
 652 {
 653     static int nb_ne2k = 0;
 654
 655     if (nb_ne2k == NE2000_NB_MAX)
 656         return;
 657     isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd);
 658     nb_ne2k++;
 659 }
 660
 661 /* PC hardware initialisation */
 662 static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
 663                      DisplayState *ds, const char **fd_filename, int snapshot,
 664                      const char *kernel_filename, const char *kernel_cmdline,
 665                      const char *initrd_filename,
 666                      int pci_enabled)
 667 {
 668     char buf[1024];
 669     int ret, linux_boot, i;
 670     ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset;
 671     int bios_size, isa_bios_size, vga_bios_size;
 672     PCIBus *pci_bus;
 673     int piix3_devfn = -1;
 674     CPUState *env;
 675     NICInfo *nd;
 676     qemu_irq *cpu_irq;
 677     qemu_irq *i8259;
 678
 679     linux_boot = (kernel_filename != NULL);
 680
 681     /* init CPUs */
 682     for(i = 0; i < smp_cpus; i++) {
 683         env = cpu_init();
 684         if (i != 0)
 685             env->hflags |= HF_HALTED_MASK;
 686         if (smp_cpus > 1) {
 687             /* XXX: enable it in all cases */
 688             env->cpuid_features |= CPUID_APIC;
 689         }
 690         register_savevm("cpu", i, 4, cpu_save, cpu_load, env);
 691         qemu_register_reset(main_cpu_reset, env);
 692         if (pci_enabled) {
 693             apic_init(env);
 694         }
 695     }
 696
 697     /* allocate RAM */
 698     ram_addr = qemu_ram_alloc(ram_size);
 699     cpu_register_physical_memory(0, ram_size, ram_addr);
 700
 701     /* allocate VGA RAM */
 702     vga_ram_addr = qemu_ram_alloc(vga_ram_size);
 703
 704     /* BIOS load */
 705     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
 706     bios_size = get_image_size(buf);
 707     if (bios_size <= 0 ||
 708         (bios_size % 65536) != 0) {
 709         goto bios_error;
 710     }
 711     bios_offset = qemu_ram_alloc(bios_size);
 712     ret = load_image(buf, phys_ram_base + bios_offset);
 713     if (ret != bios_size) {
 714     bios_error:
 715         fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf);
 716         exit(1);
 717     }
 718
 719     /* VGA BIOS load */
 720     if (cirrus_vga_enabled) {
 721         snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME);
 722     } else {
 723         snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
 724     }
 725     vga_bios_size = get_image_size(buf);
 726     if (vga_bios_size <= 0 || vga_bios_size > 65536)
 727         goto vga_bios_error;
 728     vga_bios_offset = qemu_ram_alloc(65536);
 729
 730     ret = load_image(buf, phys_ram_base + vga_bios_offset);
 731     if (ret != vga_bios_size) {
 732     vga_bios_error:
 733         fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf);
 734         exit(1);
 735     }
 736
 737     /* setup basic memory access */
 738     cpu_register_physical_memory(0xc0000, 0x10000,
 739                                  vga_bios_offset | IO_MEM_ROM);
 740
 741     /* map the last 128KB of the BIOS in ISA space */
 742     isa_bios_size = bios_size;
 743     if (isa_bios_size > (128 * 1024))
 744         isa_bios_size = 128 * 1024;
 745     cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size,
 746                                  IO_MEM_UNASSIGNED);
 747     cpu_register_physical_memory(0x100000 - isa_bios_size,
 748                                  isa_bios_size,
 749                                  (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
 750
 751     {
 752         ram_addr_t option_rom_offset;
 753         int size, offset;
 754
 755         offset = 0;
 756         for (i = 0; i < nb_option_roms; i++) {
 757             size = get_image_size(option_rom[i]);
 758             if (size < 0) {
 759                 fprintf(stderr, "Could not load option rom '%s'\n",
 760                         option_rom[i]);
 761                 exit(1);
 762             }
 763             if (size > (0x10000 - offset))
 764                 goto option_rom_error;
 765             option_rom_offset = qemu_ram_alloc(size);
 766             ret = load_image(option_rom[i], phys_ram_base + option_rom_offset);
 767             if (ret != size) {
 768             option_rom_error:
 769                 fprintf(stderr, "Too many option ROMS\n");
 770                 exit(1);
 771             }
 772             size = (size + 4095) & ~4095;
 773             cpu_register_physical_memory(0xd0000 + offset,
 774                                          size, option_rom_offset | IO_MEM_ROM);
 775             offset += size;
 776         }
 777     }
 778
 779     /* map all the bios at the top of memory */
 780     cpu_register_physical_memory((uint32_t)(-bios_size),
 781                                  bios_size, bios_offset | IO_MEM_ROM);
 782
 783     bochs_bios_init();
 784
 785     if (linux_boot)
 786         load_linux(kernel_filename, initrd_filename, kernel_cmdline);
 787
 788     cpu_irq = qemu_allocate_irqs(pic_irq_request, first_cpu, 1);
 789     i8259 = i8259_init(cpu_irq[0]);
 790     ferr_irq = i8259[13];
 791
 792     if (pci_enabled) {
 793         pci_bus = i440fx_init(&i440fx_state, i8259);
 794         piix3_devfn = piix3_init(pci_bus, -1);
 795     } else {
 796         pci_bus = NULL;
 797     }
 798
 799     /* init basic PC hardware */
 800     register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
 801
 802     register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
 803
 804     if (cirrus_vga_enabled) {
 805         if (pci_enabled) {
 806             pci_cirrus_vga_init(pci_bus,
 807                                 ds, phys_ram_base + vga_ram_addr,
 808                                 vga_ram_addr, vga_ram_size);
 809         } else {
 810             isa_cirrus_vga_init(ds, phys_ram_base + vga_ram_addr,
 811                                 vga_ram_addr, vga_ram_size);
 812         }
 813     } else if (vmsvga_enabled) {
 814         if (pci_enabled)
 815             pci_vmsvga_init(pci_bus, ds, phys_ram_base + ram_size,
 816                             ram_size, vga_ram_size);
 817         else
 818             fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
 819     } else {
 820         if (pci_enabled) {
 821             pci_vga_init(pci_bus, ds, phys_ram_base + vga_ram_addr,
 822                          vga_ram_addr, vga_ram_size, 0, 0);
 823         } else {
 824             isa_vga_init(ds, phys_ram_base + vga_ram_addr,
 825                          vga_ram_addr, vga_ram_size);
 826         }
 827     }
 828
 829     rtc_state = rtc_init(0x70, i8259[8]);
 830
 831     register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
 832     register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
 833
 834     if (pci_enabled) {
 835         ioapic = ioapic_init();
 836     }
 837     pit = pit_init(0x40, i8259[0]);
 838     pcspk_init(pit);
 839     if (pci_enabled) {
 840         pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic);
 841     }
 842
 843     for(i = 0; i < MAX_SERIAL_PORTS; i++) {
 844         if (serial_hds[i]) {
 845             serial_init(serial_io[i], i8259[serial_irq[i]], serial_hds[i]);
 846         }
 847     }
 848
 849     for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
 850         if (parallel_hds[i]) {
 851             parallel_init(parallel_io[i], i8259[parallel_irq[i]],
 852                           parallel_hds[i]);
 853         }
 854     }
 855
 856     for(i = 0; i < nb_nics; i++) {
 857         nd = &nd_table[i];
 858         if (!nd->model) {
 859             if (pci_enabled) {
 860                 nd->model = "ne2k_pci";
 861             } else {
 862                 nd->model = "ne2k_isa";
 863             }
 864         }
 865         if (strcmp(nd->model, "ne2k_isa") == 0) {
 866             pc_init_ne2k_isa(nd, i8259);
 867         } else if (pci_enabled) {
 868             if (strcmp(nd->model, "?") == 0)
 869                 fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
 870             pci_nic_init(pci_bus, nd, -1);
 871         } else if (strcmp(nd->model, "?") == 0) {
 872             fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
 873             exit(1);
 874         } else {
 875             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
 876             exit(1);
 877         }
 878     }
 879
 880     if (pci_enabled) {
 881         pci_piix3_ide_init(pci_bus, bs_table, piix3_devfn + 1, i8259);
 882     } else {
 883         for(i = 0; i < 2; i++) {
 884             isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
 885                          bs_table[2 * i], bs_table[2 * i + 1]);
 886         }
 887     }
 888
 889     i8042_init(i8259[1], i8259[12], 0x60);
 890     DMA_init(0);
 891 #ifdef HAS_AUDIO
 892     audio_init(pci_enabled ? pci_bus : NULL, i8259);
 893 #endif
 894
 895     floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd_table);
 896
 897     cmos_init(ram_size, boot_device, bs_table);
 898
 899     if (pci_enabled && usb_enabled) {
 900         usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
 901     }
 902
 903     if (pci_enabled && acpi_enabled) {
 904         uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
 905         i2c_bus *smbus;
 906
 907         /* TODO: Populate SPD eeprom data.  */
 908         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100);
 909         for (i = 0; i < 8; i++) {
 910             smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
 911         }
 912     }
 913
 914     if (i440fx_state) {
 915         i440fx_init_memory_mappings(i440fx_state);
 916     }
 917 #if 0
 918     /* ??? Need to figure out some way for the user to
 919        specify SCSI devices.  */
 920     if (pci_enabled) {
 921         void *scsi;
 922         BlockDriverState *bdrv;
 923
 924         scsi = lsi_scsi_init(pci_bus, -1);
 925         bdrv = bdrv_new("scsidisk");
 926         bdrv_open(bdrv, "scsi_disk.img", 0);
 927         lsi_scsi_attach(scsi, bdrv, -1);
 928         bdrv = bdrv_new("scsicd");
 929         bdrv_open(bdrv, "scsi_cd.iso", 0);
 930         bdrv_set_type_hint(bdrv, BDRV_TYPE_CDROM);
 931         lsi_scsi_attach(scsi, bdrv, -1);
 932     }
 933 #endif
 934 }
 935
 936 static void pc_init_pci(int ram_size, int vga_ram_size, int boot_device,
 937                         DisplayState *ds, const char **fd_filename,
 938                         int snapshot,
 939                         const char *kernel_filename,
 940                         const char *kernel_cmdline,
 941                         const char *initrd_filename,
 942                         const char *cpu_model)
 943 {
 944     pc_init1(ram_size, vga_ram_size, boot_device,
 945              ds, fd_filename, snapshot,
 946              kernel_filename, kernel_cmdline,
 947              initrd_filename, 1);
 948 }
 949
 950 static void pc_init_isa(int ram_size, int vga_ram_size, int boot_device,
 951                         DisplayState *ds, const char **fd_filename,
 952                         int snapshot,
 953                         const char *kernel_filename,
 954                         const char *kernel_cmdline,
 955                         const char *initrd_filename,
 956                         const char *cpu_model)
 957 {
 958     pc_init1(ram_size, vga_ram_size, boot_device,
 959              ds, fd_filename, snapshot,
 960              kernel_filename, kernel_cmdline,
 961              initrd_filename, 0);
 962 }
 963
 964 QEMUMachine pc_machine = {
 965     "pc",
 966     "Standard PC",
 967     pc_init_pci,
 968 };
 969
 970 QEMUMachine isapc_machine = {
 971     "isapc",
 972     "ISA-only PC",
 973     pc_init_isa,
 974 };