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 "hw.h"
  25 #include "pc.h"
  26 #include "fdc.h"
  27 #include "pci.h"
  28 #include "vmware_vga.h"
  29 #include "usb-uhci.h"
  30 #include "usb-ohci.h"
  31 #include "prep_pci.h"
  32 #include "apb_pci.h"
  33 #include "block.h"
  34 #include "sysemu.h"
  35 #include "audio/audio.h"
  36 #include "net.h"
  37 #include "smbus.h"
  38 #include "boards.h"
  39 #include "monitor.h"
  40 #include "fw_cfg.h"
  41 #include "hpet_emul.h"
  42 #include "watchdog.h"
  43 #include "smbios.h"
  44 #include "ide.h"
  45 #include "loader.h"
  46 #include "elf.h"
  47 #include "multiboot.h"
  48
  49 /* output Bochs bios info messages */
  50 //#define DEBUG_BIOS
  51
  52 #define BIOS_FILENAME "bios.bin"
  53
  54 #define PC_MAX_BIOS_SIZE (4 * 1024 * 1024)
  55
  56 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables.  */
  57 #define ACPI_DATA_SIZE       0x10000
  58 #define BIOS_CFG_IOPORT 0x510
  59 #define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0)
  60 #define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1)
  61 #define FW_CFG_IRQ0_OVERRIDE (FW_CFG_ARCH_LOCAL + 2)
  62
  63 #define MAX_IDE_BUS 2
  64
  65 static fdctrl_t *floppy_controller;
  66 static RTCState *rtc_state;
  67 static PITState *pit;
  68 static PCII440FXState *i440fx_state;
  69
  70 typedef struct isa_irq_state {
  71     qemu_irq *i8259;
  72     qemu_irq *ioapic;
  73 } IsaIrqState;
  74
  75 static void isa_irq_handler(void *opaque, int n, int level)
  76 {
  77     IsaIrqState *isa = (IsaIrqState *)opaque;
  78
  79     if (n < 16) {
  80         qemu_set_irq(isa->i8259[n], level);
  81     }
  82     if (isa->ioapic)
  83         qemu_set_irq(isa->ioapic[n], level);
  84 };
  85
  86 static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
  87 {
  88 }
  89
  90 /* MSDOS compatibility mode FPU exception support */
  91 static qemu_irq ferr_irq;
  92 /* XXX: add IGNNE support */
  93 void cpu_set_ferr(CPUX86State *s)
  94 {
  95     qemu_irq_raise(ferr_irq);
  96 }
  97
  98 static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
  99 {
 100     qemu_irq_lower(ferr_irq);
 101 }
 102
 103 /* TSC handling */
 104 uint64_t cpu_get_tsc(CPUX86State *env)
 105 {
 106     return cpu_get_ticks();
 107 }
 108
 109 /* SMM support */
 110 void cpu_smm_update(CPUState *env)
 111 {
 112     if (i440fx_state && env == first_cpu)
 113         i440fx_set_smm(i440fx_state, (env->hflags >> HF_SMM_SHIFT) & 1);
 114 }
 115
 116
 117 /* IRQ handling */
 118 int cpu_get_pic_interrupt(CPUState *env)
 119 {
 120     int intno;
 121
 122     intno = apic_get_interrupt(env);
 123     if (intno >= 0) {
 124         /* set irq request if a PIC irq is still pending */
 125         /* XXX: improve that */
 126         pic_update_irq(isa_pic);
 127         return intno;
 128     }
 129     /* read the irq from the PIC */
 130     if (!apic_accept_pic_intr(env))
 131         return -1;
 132
 133     intno = pic_read_irq(isa_pic);
 134     return intno;
 135 }
 136
 137 static void pic_irq_request(void *opaque, int irq, int level)
 138 {
 139     CPUState *env = first_cpu;
 140
 141     if (env->apic_state) {
 142         while (env) {
 143             if (apic_accept_pic_intr(env))
 144                 apic_deliver_pic_intr(env, level);
 145             env = env->next_cpu;
 146         }
 147     } else {
 148         if (level)
 149             cpu_interrupt(env, CPU_INTERRUPT_HARD);
 150         else
 151             cpu_reset_interrupt(env, CPU_INTERRUPT_HARD);
 152     }
 153 }
 154
 155 /* PC cmos mappings */
 156
 157 #define REG_EQUIPMENT_BYTE          0x14
 158
 159 static int cmos_get_fd_drive_type(int fd0)
 160 {
 161     int val;
 162
 163     switch (fd0) {
 164     case 0:
 165         /* 1.44 Mb 3"5 drive */
 166         val = 4;
 167         break;
 168     case 1:
 169         /* 2.88 Mb 3"5 drive */
 170         val = 5;
 171         break;
 172     case 2:
 173         /* 1.2 Mb 5"5 drive */
 174         val = 2;
 175         break;
 176     default:
 177         val = 0;
 178         break;
 179     }
 180     return val;
 181 }
 182
 183 static void cmos_init_hd(int type_ofs, int info_ofs, BlockDriverState *hd)
 184 {
 185     RTCState *s = rtc_state;
 186     int cylinders, heads, sectors;
 187     bdrv_get_geometry_hint(hd, &cylinders, &heads, &sectors);
 188     rtc_set_memory(s, type_ofs, 47);
 189     rtc_set_memory(s, info_ofs, cylinders);
 190     rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
 191     rtc_set_memory(s, info_ofs + 2, heads);
 192     rtc_set_memory(s, info_ofs + 3, 0xff);
 193     rtc_set_memory(s, info_ofs + 4, 0xff);
 194     rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
 195     rtc_set_memory(s, info_ofs + 6, cylinders);
 196     rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
 197     rtc_set_memory(s, info_ofs + 8, sectors);
 198 }
 199
 200 /* convert boot_device letter to something recognizable by the bios */
 201 static int boot_device2nibble(char boot_device)
 202 {
 203     switch(boot_device) {
 204     case 'a':
 205     case 'b':
 206         return 0x01; /* floppy boot */
 207     case 'c':
 208         return 0x02; /* hard drive boot */
 209     case 'd':
 210         return 0x03; /* CD-ROM boot */
 211     case 'n':
 212         return 0x04; /* Network boot */
 213     }
 214     return 0;
 215 }
 216
 217 /* copy/pasted from cmos_init, should be made a general function
 218  and used there as well */
 219 static int pc_boot_set(void *opaque, const char *boot_device)
 220 {
 221     Monitor *mon = cur_mon;
 222 #define PC_MAX_BOOT_DEVICES 3
 223     RTCState *s = (RTCState *)opaque;
 224     int nbds, bds[3] = { 0, };
 225     int i;
 226
 227     nbds = strlen(boot_device);
 228     if (nbds > PC_MAX_BOOT_DEVICES) {
 229         monitor_printf(mon, "Too many boot devices for PC\n");
 230         return(1);
 231     }
 232     for (i = 0; i < nbds; i++) {
 233         bds[i] = boot_device2nibble(boot_device[i]);
 234         if (bds[i] == 0) {
 235             monitor_printf(mon, "Invalid boot device for PC: '%c'\n",
 236                            boot_device[i]);
 237             return(1);
 238         }
 239     }
 240     rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
 241     rtc_set_memory(s, 0x38, (bds[2] << 4));
 242     return(0);
 243 }
 244
 245 /* hd_table must contain 4 block drivers */
 246 static void cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size,
 247                       const char *boot_device, DriveInfo **hd_table)
 248 {
 249     RTCState *s = rtc_state;
 250     int nbds, bds[3] = { 0, };
 251     int val;
 252     int fd0, fd1, nb;
 253     int i;
 254
 255     /* various important CMOS locations needed by PC/Bochs bios */
 256
 257     /* memory size */
 258     val = 640; /* base memory in K */
 259     rtc_set_memory(s, 0x15, val);
 260     rtc_set_memory(s, 0x16, val >> 8);
 261
 262     val = (ram_size / 1024) - 1024;
 263     if (val > 65535)
 264         val = 65535;
 265     rtc_set_memory(s, 0x17, val);
 266     rtc_set_memory(s, 0x18, val >> 8);
 267     rtc_set_memory(s, 0x30, val);
 268     rtc_set_memory(s, 0x31, val >> 8);
 269
 270     if (above_4g_mem_size) {
 271         rtc_set_memory(s, 0x5b, (unsigned int)above_4g_mem_size >> 16);
 272         rtc_set_memory(s, 0x5c, (unsigned int)above_4g_mem_size >> 24);
 273         rtc_set_memory(s, 0x5d, (uint64_t)above_4g_mem_size >> 32);
 274     }
 275
 276     if (ram_size > (16 * 1024 * 1024))
 277         val = (ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
 278     else
 279         val = 0;
 280     if (val > 65535)
 281         val = 65535;
 282     rtc_set_memory(s, 0x34, val);
 283     rtc_set_memory(s, 0x35, val >> 8);
 284
 285     /* set the number of CPU */
 286     rtc_set_memory(s, 0x5f, smp_cpus - 1);
 287
 288     /* set boot devices, and disable floppy signature check if requested */
 289 #define PC_MAX_BOOT_DEVICES 3
 290     nbds = strlen(boot_device);
 291     if (nbds > PC_MAX_BOOT_DEVICES) {
 292         fprintf(stderr, "Too many boot devices for PC\n");
 293         exit(1);
 294     }
 295     for (i = 0; i < nbds; i++) {
 296         bds[i] = boot_device2nibble(boot_device[i]);
 297         if (bds[i] == 0) {
 298             fprintf(stderr, "Invalid boot device for PC: '%c'\n",
 299                     boot_device[i]);
 300             exit(1);
 301         }
 302     }
 303     rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
 304     rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ?  0x0 : 0x1));
 305
 306     /* floppy type */
 307
 308     fd0 = fdctrl_get_drive_type(floppy_controller, 0);
 309     fd1 = fdctrl_get_drive_type(floppy_controller, 1);
 310
 311     val = (cmos_get_fd_drive_type(fd0) << 4) | cmos_get_fd_drive_type(fd1);
 312     rtc_set_memory(s, 0x10, val);
 313
 314     val = 0;
 315     nb = 0;
 316     if (fd0 < 3)
 317         nb++;
 318     if (fd1 < 3)
 319         nb++;
 320     switch (nb) {
 321     case 0:
 322         break;
 323     case 1:
 324         val |= 0x01; /* 1 drive, ready for boot */
 325         break;
 326     case 2:
 327         val |= 0x41; /* 2 drives, ready for boot */
 328         break;
 329     }
 330     val |= 0x02; /* FPU is there */
 331     val |= 0x04; /* PS/2 mouse installed */
 332     rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
 333
 334     /* hard drives */
 335
 336     rtc_set_memory(s, 0x12, (hd_table[0] ? 0xf0 : 0) | (hd_table[1] ? 0x0f : 0));
 337     if (hd_table[0])
 338         cmos_init_hd(0x19, 0x1b, hd_table[0]->bdrv);
 339     if (hd_table[1])
 340         cmos_init_hd(0x1a, 0x24, hd_table[1]->bdrv);
 341
 342     val = 0;
 343     for (i = 0; i < 4; i++) {
 344         if (hd_table[i]) {
 345             int cylinders, heads, sectors, translation;
 346             /* NOTE: bdrv_get_geometry_hint() returns the physical
 347                 geometry.  It is always such that: 1 <= sects <= 63, 1
 348                 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS
 349                 geometry can be different if a translation is done. */
 350             translation = bdrv_get_translation_hint(hd_table[i]->bdrv);
 351             if (translation == BIOS_ATA_TRANSLATION_AUTO) {
 352                 bdrv_get_geometry_hint(hd_table[i]->bdrv, &cylinders, &heads, &sectors);
 353                 if (cylinders <= 1024 && heads <= 16 && sectors <= 63) {
 354                     /* No translation. */
 355                     translation = 0;
 356                 } else {
 357                     /* LBA translation. */
 358                     translation = 1;
 359                 }
 360             } else {
 361                 translation--;
 362             }
 363             val |= translation << (i * 2);
 364         }
 365     }
 366     rtc_set_memory(s, 0x39, val);
 367 }
 368
 369 void ioport_set_a20(int enable)
 370 {
 371     /* XXX: send to all CPUs ? */
 372     cpu_x86_set_a20(first_cpu, enable);
 373 }
 374
 375 int ioport_get_a20(void)
 376 {
 377     return ((first_cpu->a20_mask >> 20) & 1);
 378 }
 379
 380 static void ioport92_write(void *opaque, uint32_t addr, uint32_t val)
 381 {
 382     ioport_set_a20((val >> 1) & 1);
 383     /* XXX: bit 0 is fast reset */
 384 }
 385
 386 static uint32_t ioport92_read(void *opaque, uint32_t addr)
 387 {
 388     return ioport_get_a20() << 1;
 389 }
 390
 391 /***********************************************************/
 392 /* Bochs BIOS debug ports */
 393
 394 static void bochs_bios_write(void *opaque, uint32_t addr, uint32_t val)
 395 {
 396     static const char shutdown_str[8] = "Shutdown";
 397     static int shutdown_index = 0;
 398
 399     switch(addr) {
 400         /* Bochs BIOS messages */
 401     case 0x400:
 402     case 0x401:
 403         fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
 404         exit(1);
 405     case 0x402:
 406     case 0x403:
 407 #ifdef DEBUG_BIOS
 408         fprintf(stderr, "%c", val);
 409 #endif
 410         break;
 411     case 0x8900:
 412         /* same as Bochs power off */
 413         if (val == shutdown_str[shutdown_index]) {
 414             shutdown_index++;
 415             if (shutdown_index == 8) {
 416                 shutdown_index = 0;
 417                 qemu_system_shutdown_request();
 418             }
 419         } else {
 420             shutdown_index = 0;
 421         }
 422         break;
 423
 424         /* LGPL'ed VGA BIOS messages */
 425     case 0x501:
 426     case 0x502:
 427         fprintf(stderr, "VGA BIOS panic, line %d\n", val);
 428         exit(1);
 429     case 0x500:
 430     case 0x503:
 431 #ifdef DEBUG_BIOS
 432         fprintf(stderr, "%c", val);
 433 #endif
 434         break;
 435     }
 436 }
 437
 438 static void *bochs_bios_init(void)
 439 {
 440     void *fw_cfg;
 441     uint8_t *smbios_table;
 442     size_t smbios_len;
 443     uint64_t *numa_fw_cfg;
 444     int i, j;
 445
 446     register_ioport_write(0x400, 1, 2, bochs_bios_write, NULL);
 447     register_ioport_write(0x401, 1, 2, bochs_bios_write, NULL);
 448     register_ioport_write(0x402, 1, 1, bochs_bios_write, NULL);
 449     register_ioport_write(0x403, 1, 1, bochs_bios_write, NULL);
 450     register_ioport_write(0x8900, 1, 1, bochs_bios_write, NULL);
 451
 452     register_ioport_write(0x501, 1, 2, bochs_bios_write, NULL);
 453     register_ioport_write(0x502, 1, 2, bochs_bios_write, NULL);
 454     register_ioport_write(0x500, 1, 1, bochs_bios_write, NULL);
 455     register_ioport_write(0x503, 1, 1, bochs_bios_write, NULL);
 456
 457     fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0);
 458
 459     fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1);
 460     fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
 461     fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, (uint8_t *)acpi_tables,
 462                      acpi_tables_len);
 463     fw_cfg_add_bytes(fw_cfg, FW_CFG_IRQ0_OVERRIDE, &irq0override, 1);
 464
 465     smbios_table = smbios_get_table(&smbios_len);
 466     if (smbios_table)
 467         fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES,
 468                          smbios_table, smbios_len);
 469
 470     /* allocate memory for the NUMA channel: one (64bit) word for the number
 471      * of nodes, one word for each VCPU->node and one word for each node to
 472      * hold the amount of memory.
 473      */
 474     numa_fw_cfg = qemu_mallocz((1 + smp_cpus + nb_numa_nodes) * 8);
 475     numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes);
 476     for (i = 0; i < smp_cpus; i++) {
 477         for (j = 0; j < nb_numa_nodes; j++) {
 478             if (node_cpumask[j] & (1 << i)) {
 479                 numa_fw_cfg[i + 1] = cpu_to_le64(j);
 480                 break;
 481             }
 482         }
 483     }
 484     for (i = 0; i < nb_numa_nodes; i++) {
 485         numa_fw_cfg[smp_cpus + 1 + i] = cpu_to_le64(node_mem[i]);
 486     }
 487     fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, (uint8_t *)numa_fw_cfg,
 488                      (1 + smp_cpus + nb_numa_nodes) * 8);
 489
 490     return fw_cfg;
 491 }
 492
 493 static long get_file_size(FILE *f)
 494 {
 495     long where, size;
 496
 497     /* XXX: on Unix systems, using fstat() probably makes more sense */
 498
 499     where = ftell(f);
 500     fseek(f, 0, SEEK_END);
 501     size = ftell(f);
 502     fseek(f, where, SEEK_SET);
 503
 504     return size;
 505 }
 506
 507 static void load_linux(void *fw_cfg,
 508                        const char *kernel_filename,
 509                        const char *initrd_filename,
 510                        const char *kernel_cmdline,
 511                        target_phys_addr_t max_ram_size)
 512 {
 513     uint16_t protocol;
 514     int setup_size, kernel_size, initrd_size = 0, cmdline_size;
 515     uint32_t initrd_max;
 516     uint8_t header[8192], *setup, *kernel, *initrd_data;
 517     target_phys_addr_t real_addr, prot_addr, cmdline_addr, initrd_addr = 0;
 518     FILE *f;
 519     char *vmode;
 520
 521     /* Align to 16 bytes as a paranoia measure */
 522     cmdline_size = (strlen(kernel_cmdline)+16) & ~15;
 523
 524     /* load the kernel header */
 525     f = fopen(kernel_filename, "rb");
 526     if (!f || !(kernel_size = get_file_size(f)) ||
 527         fread(header, 1, MIN(ARRAY_SIZE(header), kernel_size), f) !=
 528         MIN(ARRAY_SIZE(header), kernel_size)) {
 529         fprintf(stderr, "qemu: could not load kernel '%s': %s\n",
 530                 kernel_filename, strerror(errno));
 531         exit(1);
 532     }
 533
 534     /* kernel protocol version */
 535 #if 0
 536     fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202));
 537 #endif
 538     if (ldl_p(header+0x202) == 0x53726448)
 539         protocol = lduw_p(header+0x206);
 540     else {
 541         /* This looks like a multiboot kernel. If it is, let's stop
 542            treating it like a Linux kernel. */
 543         if (load_multiboot(fw_cfg, f, kernel_filename, initrd_filename,
 544                            kernel_cmdline, kernel_size, header))
 545             return;
 546         protocol = 0;
 547     }
 548
 549     if (protocol < 0x200 || !(header[0x211] & 0x01)) {
 550         /* Low kernel */
 551         real_addr    = 0x90000;
 552         cmdline_addr = 0x9a000 - cmdline_size;
 553         prot_addr    = 0x10000;
 554     } else if (protocol < 0x202) {
 555         /* High but ancient kernel */
 556         real_addr    = 0x90000;
 557         cmdline_addr = 0x9a000 - cmdline_size;
 558         prot_addr    = 0x100000;
 559     } else {
 560         /* High and recent kernel */
 561         real_addr    = 0x10000;
 562         cmdline_addr = 0x20000;
 563         prot_addr    = 0x100000;
 564     }
 565
 566 #if 0
 567     fprintf(stderr,
 568             "qemu: real_addr     = 0x" TARGET_FMT_plx "\n"
 569             "qemu: cmdline_addr  = 0x" TARGET_FMT_plx "\n"
 570             "qemu: prot_addr     = 0x" TARGET_FMT_plx "\n",
 571             real_addr,
 572             cmdline_addr,
 573             prot_addr);
 574 #endif
 575
 576     /* highest address for loading the initrd */
 577     if (protocol >= 0x203)
 578         initrd_max = ldl_p(header+0x22c);
 579     else
 580         initrd_max = 0x37ffffff;
 581
 582     if (initrd_max >= max_ram_size-ACPI_DATA_SIZE)
 583         initrd_max = max_ram_size-ACPI_DATA_SIZE-1;
 584
 585     fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_ADDR, cmdline_addr);
 586     fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(kernel_cmdline)+1);
 587     fw_cfg_add_bytes(fw_cfg, FW_CFG_CMDLINE_DATA,
 588                      (uint8_t*)strdup(kernel_cmdline),
 589                      strlen(kernel_cmdline)+1);
 590
 591     if (protocol >= 0x202) {
 592         stl_p(header+0x228, cmdline_addr);
 593     } else {
 594         stw_p(header+0x20, 0xA33F);
 595         stw_p(header+0x22, cmdline_addr-real_addr);
 596     }
 597
 598     /* handle vga= parameter */
 599     vmode = strstr(kernel_cmdline, "vga=");
 600     if (vmode) {
 601         unsigned int video_mode;
 602         /* skip "vga=" */
 603         vmode += 4;
 604         if (!strncmp(vmode, "normal", 6)) {
 605             video_mode = 0xffff;
 606         } else if (!strncmp(vmode, "ext", 3)) {
 607             video_mode = 0xfffe;
 608         } else if (!strncmp(vmode, "ask", 3)) {
 609             video_mode = 0xfffd;
 610         } else {
 611             video_mode = strtol(vmode, NULL, 0);
 612         }
 613         stw_p(header+0x1fa, video_mode);
 614     }
 615
 616     /* loader type */
 617     /* High nybble = B reserved for Qemu; low nybble is revision number.
 618        If this code is substantially changed, you may want to consider
 619        incrementing the revision. */
 620     if (protocol >= 0x200)
 621         header[0x210] = 0xB0;
 622
 623     /* heap */
 624     if (protocol >= 0x201) {
 625         header[0x211] |= 0x80;  /* CAN_USE_HEAP */
 626         stw_p(header+0x224, cmdline_addr-real_addr-0x200);
 627     }
 628
 629     /* load initrd */
 630     if (initrd_filename) {
 631         if (protocol < 0x200) {
 632             fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n");
 633             exit(1);
 634         }
 635
 636         initrd_size = get_image_size(initrd_filename);
 637         initrd_addr = (initrd_max-initrd_size) & ~4095;
 638
 639         initrd_data = qemu_malloc(initrd_size);
 640         load_image(initrd_filename, initrd_data);
 641
 642         fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr);
 643         fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size);
 644         fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size);
 645
 646         stl_p(header+0x218, initrd_addr);
 647         stl_p(header+0x21c, initrd_size);
 648     }
 649
 650     /* load kernel and setup */
 651     setup_size = header[0x1f1];
 652     if (setup_size == 0)
 653         setup_size = 4;
 654     setup_size = (setup_size+1)*512;
 655     kernel_size -= setup_size;
 656
 657     setup  = qemu_malloc(setup_size);
 658     kernel = qemu_malloc(kernel_size);
 659     fseek(f, 0, SEEK_SET);
 660     if (fread(setup, 1, setup_size, f) != setup_size) {
 661         fprintf(stderr, "fread() failed\n");
 662         exit(1);
 663     }
 664     if (fread(kernel, 1, kernel_size, f) != kernel_size) {
 665         fprintf(stderr, "fread() failed\n");
 666         exit(1);
 667     }
 668     fclose(f);
 669     memcpy(setup, header, MIN(sizeof(header), setup_size));
 670
 671     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, prot_addr);
 672     fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size);
 673     fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, kernel, kernel_size);
 674
 675     fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_ADDR, real_addr);
 676     fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, setup_size);
 677     fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA, setup, setup_size);
 678
 679     option_rom[nb_option_roms] = "linuxboot.bin";
 680     nb_option_roms++;
 681 }
 682
 683 static const int ide_iobase[2] = { 0x1f0, 0x170 };
 684 static const int ide_iobase2[2] = { 0x3f6, 0x376 };
 685 static const int ide_irq[2] = { 14, 15 };
 686
 687 #define NE2000_NB_MAX 6
 688
 689 static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360,
 690                                               0x280, 0x380 };
 691 static const int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
 692
 693 static const int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
 694 static const int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 };
 695
 696 #ifdef HAS_AUDIO
 697 static void audio_init (PCIBus *pci_bus, qemu_irq *pic)
 698 {
 699     struct soundhw *c;
 700
 701     for (c = soundhw; c->name; ++c) {
 702         if (c->enabled) {
 703             if (c->isa) {
 704                 c->init.init_isa(pic);
 705             } else {
 706                 if (pci_bus) {
 707                     c->init.init_pci(pci_bus);
 708                 }
 709             }
 710         }
 711     }
 712 }
 713 #endif
 714
 715 static void pc_init_ne2k_isa(NICInfo *nd)
 716 {
 717     static int nb_ne2k = 0;
 718
 719     if (nb_ne2k == NE2000_NB_MAX)
 720         return;
 721     isa_ne2000_init(ne2000_io[nb_ne2k],
 722                     ne2000_irq[nb_ne2k], nd);
 723     nb_ne2k++;
 724 }
 725
 726 int cpu_is_bsp(CPUState *env)
 727 {
 728     return env->cpuid_apic_id == 0;
 729 }
 730
 731 static CPUState *pc_new_cpu(const char *cpu_model)
 732 {
 733     CPUState *env;
 734
 735     env = cpu_init(cpu_model);
 736     if (!env) {
 737         fprintf(stderr, "Unable to find x86 CPU definition\n");
 738         exit(1);
 739     }
 740     if ((env->cpuid_features & CPUID_APIC) || smp_cpus > 1) {
 741         env->cpuid_apic_id = env->cpu_index;
 742         /* APIC reset callback resets cpu */
 743         apic_init(env);
 744     } else {
 745         qemu_register_reset((QEMUResetHandler*)cpu_reset, env);
 746     }
 747     return env;
 748 }
 749
 750 /* PC hardware initialisation */
 751 static void pc_init1(ram_addr_t ram_size,
 752                      const char *boot_device,
 753                      const char *kernel_filename,
 754                      const char *kernel_cmdline,
 755                      const char *initrd_filename,
 756                      const char *cpu_model,
 757                      int pci_enabled)
 758 {
 759     char *filename;
 760     int ret, linux_boot, i;
 761     ram_addr_t ram_addr, bios_offset, option_rom_offset;
 762     ram_addr_t below_4g_mem_size, above_4g_mem_size = 0;
 763     int bios_size, isa_bios_size;
 764     PCIBus *pci_bus;
 765     ISADevice *isa_dev;
 766     int piix3_devfn = -1;
 767     CPUState *env;
 768     qemu_irq *cpu_irq;
 769     qemu_irq *isa_irq;
 770     qemu_irq *i8259;
 771     IsaIrqState *isa_irq_state;
 772     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
 773     DriveInfo *fd[MAX_FD];
 774     void *fw_cfg;
 775
 776     if (ram_size >= 0xe0000000 ) {
 777         above_4g_mem_size = ram_size - 0xe0000000;
 778         below_4g_mem_size = 0xe0000000;
 779     } else {
 780         below_4g_mem_size = ram_size;
 781     }
 782
 783     linux_boot = (kernel_filename != NULL);
 784
 785     /* init CPUs */
 786     if (cpu_model == NULL) {
 787 #ifdef TARGET_X86_64
 788         cpu_model = "qemu64";
 789 #else
 790         cpu_model = "qemu32";
 791 #endif
 792     }
 793
 794     for (i = 0; i < smp_cpus; i++) {
 795         env = pc_new_cpu(cpu_model);
 796     }
 797
 798     vmport_init();
 799
 800     /* allocate RAM */
 801     ram_addr = qemu_ram_alloc(0xa0000);
 802     cpu_register_physical_memory(0, 0xa0000, ram_addr);
 803
 804     /* Allocate, even though we won't register, so we don't break the
 805      * phys_ram_base + PA assumption. This range includes vga (0xa0000 - 0xc0000),
 806      * and some bios areas, which will be registered later
 807      */
 808     ram_addr = qemu_ram_alloc(0x100000 - 0xa0000);
 809     ram_addr = qemu_ram_alloc(below_4g_mem_size - 0x100000);
 810     cpu_register_physical_memory(0x100000,
 811                  below_4g_mem_size - 0x100000,
 812                  ram_addr);
 813
 814     /* above 4giga memory allocation */
 815     if (above_4g_mem_size > 0) {
 816 #if TARGET_PHYS_ADDR_BITS == 32
 817         hw_error("To much RAM for 32-bit physical address");
 818 #else
 819         ram_addr = qemu_ram_alloc(above_4g_mem_size);
 820         cpu_register_physical_memory(0x100000000ULL,
 821                                      above_4g_mem_size,
 822                                      ram_addr);
 823 #endif
 824     }
 825
 826
 827     /* BIOS load */
 828     if (bios_name == NULL)
 829         bios_name = BIOS_FILENAME;
 830     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 831     if (filename) {
 832         bios_size = get_image_size(filename);
 833     } else {
 834         bios_size = -1;
 835     }
 836     if (bios_size <= 0 ||
 837         (bios_size % 65536) != 0) {
 838         goto bios_error;
 839     }
 840     bios_offset = qemu_ram_alloc(bios_size);
 841     ret = rom_add_file_fixed(bios_name, (uint32_t)(-bios_size));
 842     if (ret != 0) {
 843     bios_error:
 844         fprintf(stderr, "qemu: could not load PC BIOS '%s'\n", bios_name);
 845         exit(1);
 846     }
 847     if (filename) {
 848         qemu_free(filename);
 849     }
 850     /* map the last 128KB of the BIOS in ISA space */
 851     isa_bios_size = bios_size;
 852     if (isa_bios_size > (128 * 1024))
 853         isa_bios_size = 128 * 1024;
 854     cpu_register_physical_memory(0x100000 - isa_bios_size,
 855                                  isa_bios_size,
 856                                  (bios_offset + bios_size - isa_bios_size) | IO_MEM_ROM);
 857
 858
 859
 860     rom_enable_driver_roms = 1;
 861     option_rom_offset = qemu_ram_alloc(PC_ROM_SIZE);
 862     cpu_register_physical_memory(PC_ROM_MIN_VGA, PC_ROM_SIZE, option_rom_offset);
 863
 864     /* map all the bios at the top of memory */
 865     cpu_register_physical_memory((uint32_t)(-bios_size),
 866                                  bios_size, bios_offset | IO_MEM_ROM);
 867
 868     fw_cfg = bochs_bios_init();
 869
 870     if (linux_boot) {
 871         load_linux(fw_cfg, kernel_filename, initrd_filename, kernel_cmdline, below_4g_mem_size);
 872     }
 873
 874     for (i = 0; i < nb_option_roms; i++) {
 875         rom_add_option(option_rom[i]);
 876     }
 877
 878     cpu_irq = qemu_allocate_irqs(pic_irq_request, NULL, 1);
 879     i8259 = i8259_init(cpu_irq[0]);
 880     isa_irq_state = qemu_mallocz(sizeof(*isa_irq_state));
 881     isa_irq_state->i8259 = i8259;
 882     isa_irq = qemu_allocate_irqs(isa_irq_handler, isa_irq_state, 24);
 883
 884     if (pci_enabled) {
 885         pci_bus = i440fx_init(&i440fx_state, &piix3_devfn, isa_irq);
 886     } else {
 887         pci_bus = NULL;
 888         isa_bus_new(NULL);
 889     }
 890     isa_bus_irqs(isa_irq);
 891
 892     ferr_irq = isa_reserve_irq(13);
 893
 894     /* init basic PC hardware */
 895     register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
 896
 897     register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
 898
 899     if (cirrus_vga_enabled) {
 900         if (pci_enabled) {
 901             pci_cirrus_vga_init(pci_bus);
 902         } else {
 903             isa_cirrus_vga_init();
 904         }
 905     } else if (vmsvga_enabled) {
 906         if (pci_enabled)
 907             pci_vmsvga_init(pci_bus);
 908         else
 909             fprintf(stderr, "%s: vmware_vga: no PCI bus\n", __FUNCTION__);
 910     } else if (std_vga_enabled) {
 911         if (pci_enabled) {
 912             pci_vga_init(pci_bus, 0, 0);
 913         } else {
 914             isa_vga_init();
 915         }
 916     }
 917
 918     rtc_state = rtc_init(2000);
 919
 920     qemu_register_boot_set(pc_boot_set, rtc_state);
 921
 922     register_ioport_read(0x92, 1, 1, ioport92_read, NULL);
 923     register_ioport_write(0x92, 1, 1, ioport92_write, NULL);
 924
 925     if (pci_enabled) {
 926         isa_irq_state->ioapic = ioapic_init();
 927     }
 928     pit = pit_init(0x40, isa_reserve_irq(0));
 929     pcspk_init(pit);
 930     if (!no_hpet) {
 931         hpet_init(isa_irq);
 932     }
 933
 934     for(i = 0; i < MAX_SERIAL_PORTS; i++) {
 935         if (serial_hds[i]) {
 936             serial_isa_init(i, serial_hds[i]);
 937         }
 938     }
 939
 940     for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
 941         if (parallel_hds[i]) {
 942             parallel_init(i, parallel_hds[i]);
 943         }
 944     }
 945
 946     for(i = 0; i < nb_nics; i++) {
 947         NICInfo *nd = &nd_table[i];
 948
 949         if (!pci_enabled || (nd->model && strcmp(nd->model, "ne2k_isa") == 0))
 950             pc_init_ne2k_isa(nd);
 951         else
 952             pci_nic_init_nofail(nd, "e1000", NULL);
 953     }
 954
 955     if (drive_get_max_bus(IF_IDE) >= MAX_IDE_BUS) {
 956         fprintf(stderr, "qemu: too many IDE bus\n");
 957         exit(1);
 958     }
 959
 960     for(i = 0; i < MAX_IDE_BUS * MAX_IDE_DEVS; i++) {
 961         hd[i] = drive_get(IF_IDE, i / MAX_IDE_DEVS, i % MAX_IDE_DEVS);
 962     }
 963
 964     if (pci_enabled) {
 965         pci_piix3_ide_init(pci_bus, hd, piix3_devfn + 1);
 966     } else {
 967         for(i = 0; i < MAX_IDE_BUS; i++) {
 968             isa_ide_init(ide_iobase[i], ide_iobase2[i], ide_irq[i],
 969                          hd[MAX_IDE_DEVS * i], hd[MAX_IDE_DEVS * i + 1]);
 970         }
 971     }
 972
 973     isa_dev = isa_create_simple("i8042");
 974     DMA_init(0);
 975 #ifdef HAS_AUDIO
 976     audio_init(pci_enabled ? pci_bus : NULL, isa_irq);
 977 #endif
 978
 979     for(i = 0; i < MAX_FD; i++) {
 980         fd[i] = drive_get(IF_FLOPPY, 0, i);
 981     }
 982     floppy_controller = fdctrl_init_isa(fd);
 983
 984     cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device, hd);
 985
 986     if (pci_enabled && usb_enabled) {
 987         usb_uhci_piix3_init(pci_bus, piix3_devfn + 2);
 988     }
 989
 990     if (pci_enabled && acpi_enabled) {
 991         uint8_t *eeprom_buf = qemu_mallocz(8 * 256); /* XXX: make this persistent */
 992         i2c_bus *smbus;
 993
 994         /* TODO: Populate SPD eeprom data.  */
 995         smbus = piix4_pm_init(pci_bus, piix3_devfn + 3, 0xb100,
 996                               isa_reserve_irq(9));
 997         for (i = 0; i < 8; i++) {
 998             DeviceState *eeprom;
 999             eeprom = qdev_create((BusState *)smbus, "smbus-eeprom");
1000             qdev_prop_set_uint8(eeprom, "address", 0x50 + i);
1001             qdev_prop_set_ptr(eeprom, "data", eeprom_buf + (i * 256));
1002             qdev_init_nofail(eeprom);
1003         }
1004         piix4_acpi_system_hot_add_init(pci_bus);
1005     }
1006
1007     if (i440fx_state) {
1008         i440fx_init_memory_mappings(i440fx_state);
1009     }
1010
1011     if (pci_enabled) {
1012         int max_bus;
1013         int bus;
1014
1015         max_bus = drive_get_max_bus(IF_SCSI);
1016         for (bus = 0; bus <= max_bus; bus++) {
1017             pci_create_simple(pci_bus, -1, "lsi53c895a");
1018         }
1019     }
1020
1021     /* Add virtio console devices */
1022     if (pci_enabled) {
1023         for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
1024             if (virtcon_hds[i]) {
1025                 pci_create_simple(pci_bus, -1, "virtio-console-pci");
1026             }
1027         }
1028     }
1029
1030     rom_load_fw(fw_cfg);
1031 }
1032
1033 static void pc_init_pci(ram_addr_t ram_size,
1034                         const char *boot_device,
1035                         const char *kernel_filename,
1036                         const char *kernel_cmdline,
1037                         const char *initrd_filename,
1038                         const char *cpu_model)
1039 {
1040     pc_init1(ram_size, boot_device,
1041              kernel_filename, kernel_cmdline,
1042              initrd_filename, cpu_model, 1);
1043 }
1044
1045 static void pc_init_isa(ram_addr_t ram_size,
1046                         const char *boot_device,
1047                         const char *kernel_filename,
1048                         const char *kernel_cmdline,
1049                         const char *initrd_filename,
1050                         const char *cpu_model)
1051 {
1052     if (cpu_model == NULL)
1053         cpu_model = "486";
1054     pc_init1(ram_size, boot_device,
1055              kernel_filename, kernel_cmdline,
1056              initrd_filename, cpu_model, 0);
1057 }
1058
1059 /* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
1060    BIOS will read it and start S3 resume at POST Entry */
1061 void cmos_set_s3_resume(void)
1062 {
1063     if (rtc_state)
1064         rtc_set_memory(rtc_state, 0xF, 0xFE);
1065 }
1066
1067 static QEMUMachine pc_machine = {
1068     .name = "pc-0.11",
1069     .alias = "pc",
1070     .desc = "Standard PC",
1071     .init = pc_init_pci,
1072     .max_cpus = 255,
1073     .is_default = 1,
1074 };
1075
1076 static QEMUMachine pc_machine_v0_10 = {
1077     .name = "pc-0.10",
1078     .desc = "Standard PC, qemu 0.10",
1079     .init = pc_init_pci,
1080     .max_cpus = 255,
1081     .compat_props = (GlobalProperty[]) {
1082         {
1083             .driver   = "virtio-blk-pci",
1084             .property = "class",
1085             .value    = stringify(PCI_CLASS_STORAGE_OTHER),
1086         },{
1087             .driver   = "virtio-console-pci",
1088             .property = "class",
1089             .value    = stringify(PCI_CLASS_DISPLAY_OTHER),
1090         },{
1091             .driver   = "virtio-net-pci",
1092             .property = "vectors",
1093             .value    = stringify(0),
1094         },{
1095             .driver   = "virtio-blk-pci",
1096             .property = "vectors",
1097             .value    = stringify(0),
1098         },
1099         { /* end of list */ }
1100     },
1101 };
1102
1103 static QEMUMachine isapc_machine = {
1104     .name = "isapc",
1105     .desc = "ISA-only PC",
1106     .init = pc_init_isa,
1107     .max_cpus = 1,
1108 };
1109
1110 static void pc_machine_init(void)
1111 {
1112     qemu_register_machine(&pc_machine);
1113     qemu_register_machine(&pc_machine_v0_10);
1114     qemu_register_machine(&isapc_machine);
1115 }
1116
1117 machine_init(pc_machine_init);