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 /* hd_table must contain 4 block drivers */
 156 static void cmos_init(int ram_size, int boot_device, BlockDriverState **hd_table)
 157 {
 158     RTCState *s = rtc_state;
 159     int val;
 160     int fd0, fd1, nb;
 161     int i;
 162
 163     /* various important CMOS locations needed by PC/Bochs bios */
 164
 165     /* memory size */
 166     val = 640; /* base memory in K */
 167     rtc_set_memory(s, 0x15, val);
 168     rtc_set_memory(s, 0x16, val >> 8);
 169
 170     val = (ram_size / 1024) - 1024;
 171     if (val > 65535)
 172         val = 65535;
 173     rtc_set_memory(s, 0x17, val);
 174     rtc_set_memory(s, 0x18, val >> 8);
 175     rtc_set_memory(s, 0x30, val);
 176     rtc_set_memory(s, 0x31, val >> 8);
 177
 178     if (ram_size > (16 * 1024 * 1024))
 179         val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
 180     else
 181         val = 0;
 182     if (val > 65535)
 183         val = 65535;
 184     rtc_set_memory(s, 0x34, val);
 185     rtc_set_memory(s, 0x35, val >> 8);
 186
 187     switch(boot_device) {
 188     case 'a':
 189     case 'b':
 190         rtc_set_memory(s, 0x3d, 0x01); /* floppy boot */
 191         if (!fd_bootchk)
 192             rtc_set_memory(s, 0x38, 0x01); /* disable signature check */
 193         break;
 194     default:
 195     case 'c':
 196         rtc_set_memory(s, 0x3d, 0x02); /* hard drive boot */
 197         break;
 198     case 'd':
 199         rtc_set_memory(s, 0x3d, 0x03); /* CD-ROM boot */
 200         break;
 201     case 'n':
 202         rtc_set_memory(s, 0x3d, 0x04); /* Network boot */
 203         break;
 204     }
 205
 206     /* floppy type */
 207
 208     fd0 = fdctrl_get_drive_type(floppy_controller, 0);
 209     fd1 = fdctrl_get_drive_type(floppy_controller, 1);
 210
 211     val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
 212     rtc_set_memory(s, 0x10, val);
 213
 214     val = 0;
 215     nb = 0;
 216     if (fd0 < 3)
 217         nb++;
 218     if (fd1 < 3)
 219         nb++;
 220     switch (nb) {
 221     case 0:
 222         break;
 223     case 1:
 224         val |= 0x01; /* 1 drive, ready for boot */
 225         break;
 226     case 2:
 227         val |= 0x41; /* 2 drives, ready for boot */
 228         break;
 229     }
 230     val |= 0x02; /* FPU is there */
 231     val |= 0x04; /* PS/2 mouse installed */
 232     rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
 233
 234     /* hard drives */
 235
 236     rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
 237     if (hd_table[0])
 238         cmos_init_hd(0x19, 0x1b, hd_table[0]);
 239     if (hd_table[1])
 240         cmos_init_hd(0x1a, 0x24, hd_table[1]);
 241
 242     val = 0;
 243     for (i = 0; i < 4; i++) {
 244         if (hd_table[i]) {
 245             int cylinders, heads, sectors, translation;
 246             /* NOTE: bdrv_get_geometry_hint() returns the physical
 247                 geometry.  It is always such that: 1 <= sects <= 63, 1
 248                 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
 249                 geometry can be different if a translation is done. */
 250             translation = bdrv_get_translation_hint(hd_table[i]);
 251             if (translation == BIOS_ATA_TRANSLATION_AUTO) {
 252                 bdrv_get_geometry_hint(hd_table[i], &cylinders, &heads, &sectors);
 253                 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
 254                     /* No translation. */
 255                     translation = 0;
 256                 } else {
 257                     /* LBA translation. */
 258                     translation = 1;
 259                 }
 260             } else {
 261                 translation--;
 262             }
 263             val |= translation << (i * 2);
 264         }
 265     }
 266     rtc_set_memory(s, 0x39, val);
 267 }
 268
 269 void ioport_set_a20(int enable)
 270 {
 271     /* XXX: send to all CPUs ? */
 272     cpu_x86_set_a20(first_cpu, enable);
 273 }
 274
 275 int ioport_get_a20(void)
 276 {
 277     return ((first_cpu->a20_mask >> 20) & 1);
 278 }
 279
 280 static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
 281 {
 282     ioport_set_a20((val >> 1) & 1);
 283     /* XXX: bit 0 is fast reset */
 284 }
 285
 286 static uint32_t ioport92_read(void *opaque, uint32_t addr)
 287 {
 288     return ioport_get_a20() << 1;
 289 }
 290
 291 /***********************************************************/
 292 /* Bochs BIOS debug ports */
 293
 294 void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
 295 {
 296     static const char shutdown_str[8] = "Shutdown";
 297     static int shutdown_index = 0;
 298
 299     switch(addr) {
 300         /* Bochs BIOS messages */
 301     case 0x400:
 302     case 0x401:
 303         fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
 304         exit(1);
 305     case 0x402:
 306     case 0x403:
 307 #ifdef DEBUG_BIOS
 308         fprintf(stderr, "%c", val);
 309 #endif
 310         break;
 311     case 0x8900:
 312         /* same as Bochs power off */
 313         if (val == shutdown_str[shutdown_index]) {
 314             shutdown_index++;
 315             if (shutdown_index == 8) {
 316                 shutdown_index = 0;
 317                 qemu_system_shutdown_request();
 318             }
 319         } else {
 320             shutdown_index = 0;
 321         }
 322         break;
 323
 324         /* LGPL'ed VGA BIOS messages */
 325     case 0x501:
 326     case 0x502:
 327         fprintf(stderr, "VGA BIOS panic, line %d\n", val);
 328         exit(1);
 329     case 0x500:
 330     case 0x503:
 331 #ifdef DEBUG_BIOS
 332         fprintf(stderr, "%c", val);
 333 #endif
 334         break;
 335     }
 336 }
 337
 338 void bochs_bios_init(void)
 339 {
 340     register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
 341     register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
 342     register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
 343     register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
 344     register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
 345
 346     register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
 347     register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
 348     register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
 349     register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
 350 }
 351
 352 /* Generate an initial boot sector which sets state and jump to
 353    a specified vector */
 354 static void generate_bootsect(uint32_t gpr[8], uint16_t segs[6], uint16_t ip)
 355 {
 356     uint8_t bootsect[512], *p;
 357     int i;
 358
 359     if (bs_table[0] == NULL) {
 360         fprintf(stderr, "A disk image must be given for 'hda' when booting "
 361                 "a Linux kernel\n");
 362         exit(1);
 363     }
 364
 365     memset(bootsect, 0, sizeof(bootsect));
 366
 367     /* Copy the MSDOS partition table if possible */
 368     bdrv_read(bs_table[0], 0, bootsect, 1);
 369
 370     /* Make sure we have a partition signature */
 371     bootsect[510] = 0x55;
 372     bootsect[511] = 0xaa;
 373
 374     /* Actual code */
 375     p = bootsect;
 376     *p++ = 0xfa;                /* CLI */
 377     *p++ = 0xfc;                /* CLD */
 378
 379     for (i = 0; i < 6; i++) {
 380         if (i == 1)             /* Skip CS */
 381             continue;
 382
 383         *p++ = 0xb8;            /* MOV AX,imm16 */
 384         *p++ = segs[i];
 385         *p++ = segs[i] >> 8;
 386         *p++ = 0x8e;            /* MOV <seg>,AX */
 387         *p++ = 0xc0 + (i << 3);
 388     }
 389
 390     for (i = 0; i < 8; i++) {
 391         *p++ = 0x66;            /* 32-bit operand size */
 392         *p++ = 0xb8 + i;        /* MOV <reg>,imm32 */
 393         *p++ = gpr[i];
 394         *p++ = gpr[i] >> 8;
 395         *p++ = gpr[i] >> 16;
 396         *p++ = gpr[i] >> 24;
 397     }
 398
 399     *p++ = 0xea;                /* JMP FAR */
 400     *p++ = ip;                  /* IP */
 401     *p++ = ip >> 8;
 402     *p++ = segs[1];             /* CS */
 403     *p++ = segs[1] >> 8;
 404
 405     bdrv_set_boot_sector(bs_table[0], bootsect, sizeof(bootsect));
 406 }
 407
 408 int load_kernel(const char *filename, uint8_t *addr,
 409                 uint8_t *real_addr)
 410 {
 411     int fd, size;
 412     int setup_sects;
 413
 414     fd = open(filename, O_RDONLY | O_BINARY);
 415     if (fd < 0)
 416         return -1;
 417
 418     /* load 16 bit code */
 419     if (read(fd, real_addr, 512) != 512)
 420         goto fail;
 421     setup_sects = real_addr[0x1F1];
 422     if (!setup_sects)
 423         setup_sects = 4;
 424     if (read(fd, real_addr + 512, setup_sects * 512) !=
 425         setup_sects * 512)
 426         goto fail;
 427
 428     /* load 32 bit code */
 429     size = read(fd, addr, 16 * 1024 * 1024);
 430     if (size < 0)
 431         goto fail;
 432     close(fd);
 433     return size;
 434  fail:
 435     close(fd);
 436     return -1;
 437 }
 438
 439 static long get_file_size(FILE *f)
 440 {
 441     long where, size;
 442
 443     /* XXX: on Unix systems, using fstat() probably makes more sense */
 444
 445     where = ftell(f);
 446     fseek(f, 0, SEEK_END);
 447     size = ftell(f);
 448     fseek(f, where, SEEK_SET);
 449
 450     return size;
 451 }
 452
 453 static void load_linux(const char *kernel_filename,
 454                        const char *initrd_filename,
 455                        const char *kernel_cmdline)
 456 {
 457     uint16_t protocol;
 458     uint32_t gpr[8];
 459     uint16_t seg[6];
 460     uint16_t real_seg;
 461     int setup_size, kernel_size, initrd_size, cmdline_size;
 462     uint32_t initrd_max;
 463     uint8_t header[1024];
 464     uint8_t *real_addr, *prot_addr, *cmdline_addr, *initrd_addr;
 465     FILE *f, *fi;
 466
 467     /* Align to 16 bytes as a paranoia measure */
 468     cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
 469
 470     /* load the kernel header */
 471     f = fopen(kernel_filename, "rb");
 472     if (!f || !(kernel_size = get_file_size(f)) ||
 473         fread(header, 1, 1024, f) != 1024) {
 474         fprintf(stderr, "qemu: could not load kernel '%s'\n",
 475                 kernel_filename);
 476         exit(1);
 477     }
 478
 479     /* kernel protocol version */
 480     fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
 481     if (ldl_p(header+0x202) == 0x53726448)
 482         protocol = lduw_p(header+0x206);
 483     else
 484         protocol = 0;
 485
 486     if (protocol < 0x200 || !(header[0x211] & 0x01)) {
 487         /* Low kernel */
 488         real_addr    = phys_ram_base + 0x90000;
 489         cmdline_addr = phys_ram_base + 0x9a000 - cmdline_size;
 490         prot_addr    = phys_ram_base + 0x10000;
 491     } else if (protocol < 0x202) {
 492         /* High but ancient kernel */
 493         real_addr    = phys_ram_base + 0x90000;
 494         cmdline_addr = phys_ram_base + 0x9a000 - cmdline_size;
 495         prot_addr    = phys_ram_base + 0x100000;
 496     } else {
 497         /* High and recent kernel */
 498         real_addr    = phys_ram_base + 0x10000;
 499         cmdline_addr = phys_ram_base + 0x20000;
 500         prot_addr    = phys_ram_base + 0x100000;
 501     }
 502
 503     fprintf(stderr,
 504             "qemu: real_addr     = %#zx\n"
 505             "qemu: cmdline_addr  = %#zx\n"
 506             "qemu: prot_addr     = %#zx\n",
 507             real_addr-phys_ram_base,
 508             cmdline_addr-phys_ram_base,
 509             prot_addr-phys_ram_base);
 510
 511     /* highest address for loading the initrd */
 512     if (protocol >= 0x203)
 513         initrd_max = ldl_p(header+0x22c);
 514     else
 515         initrd_max = 0x37ffffff;
 516
 517     if (initrd_max >= ram_size-ACPI_DATA_SIZE)
 518         initrd_max = ram_size-ACPI_DATA_SIZE-1;
 519
 520     /* kernel command line */
 521     pstrcpy(cmdline_addr, 4096, kernel_cmdline);
 522
 523     if (protocol >= 0x202) {
 524         stl_p(header+0x228, cmdline_addr-phys_ram_base);
 525     } else {
 526         stw_p(header+0x20, 0xA33F);
 527         stw_p(header+0x22, cmdline_addr-real_addr);
 528     }
 529
 530     /* loader type */
 531     /* High nybble = B reserved for Qemu; low nybble is revision number.
 532        If this code is substantially changed, you may want to consider
 533        incrementing the revision. */
 534     if (protocol >= 0x200)
 535         header[0x210] = 0xB0;
 536
 537     /* heap */
 538     if (protocol >= 0x201) {
 539         header[0x211] |= 0x80;  /* CAN_USE_HEAP */
 540         stw_p(header+0x224, cmdline_addr-real_addr-0x200);
 541     }
 542
 543     /* load initrd */
 544     if (initrd_filename) {
 545         if (protocol < 0x200) {
 546             fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
 547             exit(1);
 548         }
 549
 550         fi = fopen(initrd_filename, "rb");
 551         if (!fi) {
 552             fprintf(stderr, "qemu: could not load initial ram disk '%s'\n",
 553                     initrd_filename);
 554             exit(1);
 555         }
 556
 557         initrd_size = get_file_size(fi);
 558         initrd_addr = phys_ram_base + ((initrd_max-initrd_size) & ~4095);
 559
 560         fprintf(stderr, "qemu: loading initrd (%#x bytes) at %#zx\n",
 561                 initrd_size, initrd_addr-phys_ram_base);
 562
 563         if (fread(initrd_addr, 1, initrd_size, fi) != initrd_size) {
 564             fprintf(stderr, "qemu: read error on initial ram disk '%s'\n",
 565                     initrd_filename);
 566             exit(1);
 567         }
 568         fclose(fi);
 569
 570         stl_p(header+0x218, initrd_addr-phys_ram_base);
 571         stl_p(header+0x21c, initrd_size);
 572     }
 573
 574     /* store the finalized header and load the rest of the kernel */
 575     memcpy(real_addr, header, 1024);
 576
 577     setup_size = header[0x1f1];
 578     if (setup_size == 0)
 579         setup_size = 4;
 580
 581     setup_size = (setup_size+1)*512;
 582     kernel_size -= setup_size;  /* Size of protected-mode code */
 583
 584     if (fread(real_addr+1024, 1, setup_size-1024, f) != setup_size-1024 ||
 585         fread(prot_addr, 1, kernel_size, f) != kernel_size) {
 586         fprintf(stderr, "qemu: read error on kernel '%s'\n",
 587                 kernel_filename);
 588         exit(1);
 589     }
 590     fclose(f);
 591
 592     /* generate bootsector to set up the initial register state */
 593     real_seg = (real_addr-phys_ram_base) >> 4;
 594     seg[0] = seg[2] = seg[3] = seg[4] = seg[4] = real_seg;
 595     seg[1] = real_seg+0x20;     /* CS */
 596     memset(gpr, 0, sizeof gpr);
 597     gpr[4] = cmdline_addr-real_addr-16; /* SP (-16 is paranoia) */
 598
 599     generate_bootsect(gpr, seg, 0);
 600 }
 601
 602 static void main_cpu_reset(void *opaque)
 603 {
 604     CPUState *env = opaque;
 605     cpu_reset(env);
 606 }
 607
 608 static const int ide_iobase[2] = { 0x1f0, 0x170 };
 609 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
 610 static const int ide_irq[2] = { 14, 15 };
 611
 612 #define NE2000_NB_MAX 6
 613
 614 static int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 0x280, 0x380 };
 615 static int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
 616
 617 static int serial_io[MAX_SERIAL_PORTS] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 };
 618 static int serial_irq[MAX_SERIAL_PORTS] = { 4, 3, 4, 3 };
 619
 620 static int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
 621 static int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
 622
 623 #ifdef HAS_AUDIO
 624 static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
 625 {
 626     struct soundhw *c;
 627     int audio_enabled = 0;
 628
 629     for (c = soundhw; !audio_enabled && c->name; ++c) {
 630         audio_enabled = c->enabled;
 631     }
 632
 633     if (audio_enabled) {
 634         AudioState *s;
 635
 636         s = AUD_init ();
 637         if (s) {
 638             for (c = soundhw; c->name; ++c) {
 639                 if (c->enabled) {
 640                     if (c->isa) {
 641                         c->init.init_isa (s, pic);
 642                     }
 643                     else {
 644                         if (pci_bus) {
 645                             c->init.init_pci (pci_bus, s);
 646                         }
 647                     }
 648                 }
 649             }
 650         }
 651     }
 652 }
 653 #endif
 654
 655 static void pc_init_ne2k_isa(NICInfo *nd, qemu_irq *pic)
 656 {
 657     static int nb_ne2k = 0;
 658
 659     if (nb_ne2k == NE2000_NB_MAX)
 660         return;
 661     isa_ne2000_init(ne2000_io[nb_ne2k], pic[ne2000_irq[nb_ne2k]], nd);
 662     nb_ne2k++;
 663 }
 664
 665 /* PC hardware initialisation */
 666 static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
 667                      DisplayState *ds, const char **fd_filename, int snapshot,
 668                      const char *kernel_filename, const char *kernel_cmdline,
 669                      const char *initrd_filename,
 670                      int pci_enabled)
 671 {
 672     char buf[1024];
 673     int ret, linux_boot, i;
 674     ram_addr_t ram_addr, vga_ram_addr, bios_offset, vga_bios_offset;
 675     int bios_size, isa_bios_size, vga_bios_size;
 676     PCIBus *pci_bus;
 677     int piix3_devfn = -1;
 678     CPUState *env;
 679     NICInfo *nd;
 680     qemu_irq *cpu_irq;
 681     qemu_irq *i8259;
 682
 683     linux_boot = (kernel_filename != NULL);
 684
 685     /* init CPUs */
 686     for(i = 0; i < smp_cpus; i++) {
 687         env = cpu_init();
 688         if (i != 0)
 689             env->hflags |= HF_HALTED_MASK;
 690         if (smp_cpus > 1) {
 691             /* XXX: enable it in all cases */
 692             env->cpuid_features |= CPUID_APIC;
 693         }
 694         register_savevm("cpu", i, 4, cpu_save, cpu_load, env);
 695         qemu_register_reset(main_cpu_reset, env);
 696         if (pci_enabled) {
 697             apic_init(env);
 698         }
 699         vmport_init(env);
 700     }
 701
 702     /* allocate RAM */
 703     ram_addr = qemu_ram_alloc(ram_size);
 704     cpu_register_physical_memory(0, ram_size, ram_addr);
 705
 706     /* allocate VGA RAM */
 707     vga_ram_addr = qemu_ram_alloc(vga_ram_size);
 708
 709     /* BIOS load */
 710     if (bios_name == NULL)
 711         bios_name = BIOS_FILENAME;
 712     snprintf(buf, sizeof(buf), "%s/%s", bios_dir, bios_name);
 713     bios_size = get_image_size(buf);
 714     if (bios_size <= 0 ||
 715         (bios_size % 65536) != 0) {
 716         goto bios_error;
 717     }
 718     bios_offset = qemu_ram_alloc(bios_size);
 719     ret = load_image(buf, phys_ram_base + bios_offset);
 720     if (ret != bios_size) {
 721     bios_error:
 722         fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", buf);
 723         exit(1);
 724     }
 725
 726     /* VGA BIOS load */
 727     if (cirrus_vga_enabled) {
 728         snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_CIRRUS_FILENAME);
 729     } else {
 730         snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
 731     }
 732     vga_bios_size = get_image_size(buf);
 733     if (vga_bios_size <= 0 || vga_bios_size > 65536)
 734         goto vga_bios_error;
 735     vga_bios_offset = qemu_ram_alloc(65536);
 736
 737     ret = load_image(buf, phys_ram_base + vga_bios_offset);
 738     if (ret != vga_bios_size) {
 739     vga_bios_error:
 740         fprintf(stderr, "qemu: could not load VGA BIOS '%s'\n", buf);
 741         exit(1);
 742     }
 743
 744     /* setup basic memory access */
 745     cpu_register_physical_memory(0xc0000, 0x10000,
 746                                  vga_bios_offset | IO_MEM_ROM);
 747
 748     /* map the last 128KB of the BIOS in ISA space */
 749     isa_bios_size = bios_size;
 750     if (isa_bios_size > (128 * 1024))
 751         isa_bios_size = 128 * 1024;
 752     cpu_register_physical_memory(0xd0000, (192 * 1024) - isa_bios_size,
 753                                  IO_MEM_UNASSIGNED);
 754     cpu_register_physical_memory(0x100000 - isa_bios_size,
 755                                  isa_bios_size,
 756                                  (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
 757
 758     {
 759         ram_addr_t option_rom_offset;
 760         int size, offset;
 761
 762         offset = 0;
 763         for (i = 0; i < nb_option_roms; i++) {
 764             size = get_image_size(option_rom[i]);
 765             if (size < 0) {
 766                 fprintf(stderr, "Could not load option rom '%s'\n",
 767                         option_rom[i]);
 768                 exit(1);
 769             }
 770             if (size > (0x10000 - offset))
 771                 goto option_rom_error;
 772             option_rom_offset = qemu_ram_alloc(size);
 773             ret = load_image(option_rom[i], phys_ram_base + option_rom_offset);
 774             if (ret != size) {
 775             option_rom_error:
 776                 fprintf(stderr, "Too many option ROMS\n");
 777                 exit(1);
 778             }
 779             size = (size + 4095) & ~4095;
 780             cpu_register_physical_memory(0xd0000 + offset,
 781                                          size, option_rom_offset | IO_MEM_ROM);
 782             offset += size;
 783         }
 784     }
 785
 786     /* map all the bios at the top of memory */
 787     cpu_register_physical_memory((uint32_t)(-bios_size),
 788                                  bios_size, bios_offset | IO_MEM_ROM);
 789
 790     bochs_bios_init();
 791
 792     if (linux_boot)
 793         load_linux(kernel_filename, initrd_filename, kernel_cmdline);
 794
 795     cpu_irq = qemu_allocate_irqs(pic_irq_request, first_cpu, 1);
 796     i8259 = i8259_init(cpu_irq[0]);
 797     ferr_irq = i8259[13];
 798
 799     if (pci_enabled) {
 800         pci_bus = i440fx_init(&i440fx_state, i8259);
 801         piix3_devfn = piix3_init(pci_bus, -1);
 802     } else {
 803         pci_bus = NULL;
 804     }
 805
 806     /* init basic PC hardware */
 807     register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
 808
 809     register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
 810
 811     if (cirrus_vga_enabled) {
 812         if (pci_enabled) {
 813             pci_cirrus_vga_init(pci_bus,
 814                                 ds, phys_ram_base + vga_ram_addr,
 815                                 vga_ram_addr, vga_ram_size);
 816         } else {
 817             isa_cirrus_vga_init(ds, phys_ram_base + vga_ram_addr,
 818                                 vga_ram_addr, vga_ram_size);
 819         }
 820     } else if (vmsvga_enabled) {
 821         if (pci_enabled)
 822             pci_vmsvga_init(pci_bus, ds, phys_ram_base + ram_size,
 823                             ram_size, vga_ram_size);
 824         else
 825             fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
 826     } else {
 827         if (pci_enabled) {
 828             pci_vga_init(pci_bus, ds, phys_ram_base + vga_ram_addr,
 829                          vga_ram_addr, vga_ram_size, 0, 0);
 830         } else {
 831             isa_vga_init(ds, phys_ram_base + vga_ram_addr,
 832                          vga_ram_addr, vga_ram_size);
 833         }
 834     }
 835
 836     rtc_state = rtc_init(0x70, i8259[8]);
 837
 838     register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
 839     register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
 840
 841     if (pci_enabled) {
 842         ioapic = ioapic_init();
 843     }
 844     pit = pit_init(0x40, i8259[0]);
 845     pcspk_init(pit);
 846     if (pci_enabled) {
 847         pic_set_alt_irq_func(isa_pic, ioapic_set_irq, ioapic);
 848     }
 849
 850     for(i = 0; i < MAX_SERIAL_PORTS; i++) {
 851         if (serial_hds[i]) {
 852             serial_init(serial_io[i], i8259[serial_irq[i]], serial_hds[i]);
 853         }
 854     }
 855
 856     for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
 857         if (parallel_hds[i]) {
 858             parallel_init(parallel_io[i], i8259[parallel_irq[i]],
 859                           parallel_hds[i]);
 860         }
 861     }
 862
 863     for(i = 0; i < nb_nics; i++) {
 864         nd = &nd_table[i];
 865         if (!nd->model) {
 866             if (pci_enabled) {
 867                 nd->model = "ne2k_pci";
 868             } else {
 869                 nd->model = "ne2k_isa";
 870             }
 871         }
 872         if (strcmp(nd->model, "ne2k_isa") == 0) {
 873             pc_init_ne2k_isa(nd, i8259);
 874         } else if (pci_enabled) {
 875             if (strcmp(nd->model, "?") == 0)
 876                 fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
 877             pci_nic_init(pci_bus, nd, -1);
 878         } else if (strcmp(nd->model, "?") == 0) {
 879             fprintf(stderr, "qemu: Supported ISA NICs: ne2k_isa\n");
 880             exit(1);
 881         } else {
 882             fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model);
 883             exit(1);
 884         }
 885     }
 886
 887     if (pci_enabled) {
 888         pci_piix3_ide_init(pci_bus, bs_table, piix3_devfn + 1, i8259);
 889     } else {
 890         for(i = 0; i < 2; i++) {
 891             isa_ide_init(ide_iobase[i], ide_iobase2[i], i8259[ide_irq[i]],
 892                          bs_table[2 * i], bs_table[2 * i + 1]);
 893         }
 894     }
 895
 896     i8042_init(i8259[1], i8259[12], 0x60);
 897     DMA_init(0);
 898 #ifdef HAS_AUDIO
 899     audio_init(pci_enabled ? pci_bus : NULL, i8259);
 900 #endif
 901
 902     floppy_controller = fdctrl_init(i8259[6], 2, 0, 0x3f0, fd_table);
 903
 904     cmos_init(ram_size, boot_device, bs_table);
 905
 906     if (pci_enabled && usb_enabled) {
 907         usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
 908     }
 909
 910     if (pci_enabled && acpi_enabled) {
 911         uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
 912         i2c_bus *smbus;
 913
 914         /* TODO: Populate SPD eeprom data.  */
 915         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100);
 916         for (i = 0; i < 8; i++) {
 917             smbus_eeprom_device_init(smbus, 0x50 + i, eeprom_buf + (i * 256));
 918         }
 919     }
 920
 921     if (i440fx_state) {
 922         i440fx_init_memory_mappings(i440fx_state);
 923     }
 924 #if 0
 925     /* ??? Need to figure out some way for the user to
 926        specify SCSI devices.  */
 927     if (pci_enabled) {
 928         void *scsi;
 929         BlockDriverState *bdrv;
 930
 931         scsi = lsi_scsi_init(pci_bus, -1);
 932         bdrv = bdrv_new("scsidisk");
 933         bdrv_open(bdrv, "scsi_disk.img", 0);
 934         lsi_scsi_attach(scsi, bdrv, -1);
 935         bdrv = bdrv_new("scsicd");
 936         bdrv_open(bdrv, "scsi_cd.iso", 0);
 937         bdrv_set_type_hint(bdrv, BDRV_TYPE_CDROM);
 938         lsi_scsi_attach(scsi, bdrv, -1);
 939     }
 940 #endif
 941 }
 942
 943 static void pc_init_pci(int ram_size, int vga_ram_size, int boot_device,
 944                         DisplayState *ds, const char **fd_filename,
 945                         int snapshot,
 946                         const char *kernel_filename,
 947                         const char *kernel_cmdline,
 948                         const char *initrd_filename,
 949                         const char *cpu_model)
 950 {
 951     pc_init1(ram_size, vga_ram_size, boot_device,
 952              ds, fd_filename, snapshot,
 953              kernel_filename, kernel_cmdline,
 954              initrd_filename, 1);
 955 }
 956
 957 static void pc_init_isa(int ram_size, int vga_ram_size, int boot_device,
 958                         DisplayState *ds, const char **fd_filename,
 959                         int snapshot,
 960                         const char *kernel_filename,
 961                         const char *kernel_cmdline,
 962                         const char *initrd_filename,
 963                         const char *cpu_model)
 964 {
 965     pc_init1(ram_size, vga_ram_size, boot_device,
 966              ds, fd_filename, snapshot,
 967              kernel_filename, kernel_cmdline,
 968              initrd_filename, 0);
 969 }
 970
 971 QEMUMachine pc_machine = {
 972     "pc",
 973     "Standard PC",
 974     pc_init_pci,
 975 };
 976
 977 QEMUMachine isapc_machine = {
 978     "isapc",
 979     "ISA-only PC",
 980     pc_init_isa,
 981 };