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/hw.h" 25 #include "hw/i386/pc.h" 26 #include "hw/char/serial.h" 27 #include "hw/i386/apic.h" 28 #include "hw/block/fdc.h" 29 #include "hw/ide.h" 30 #include "hw/pci/pci.h" 31 #include "monitor/monitor.h" 32 #include "hw/nvram/fw_cfg.h" 33 #include "hw/timer/hpet.h" 34 #include "hw/i386/smbios.h" 35 #include "hw/loader.h" 36 #include "elf.h" 37 #include "multiboot.h" 38 #include "hw/timer/mc146818rtc.h" 39 #include "hw/timer/i8254.h" 40 #include "hw/audio/pcspk.h" 41 #include "hw/pci/msi.h" 42 #include "hw/sysbus.h" 43 #include "sysemu/sysemu.h" 44 #include "sysemu/kvm.h" 45 #include "kvm_i386.h" 46 #include "hw/xen/xen.h" 47 #include "sysemu/blockdev.h" 48 #include "hw/block/block.h" 49 #include "ui/qemu-spice.h" 50 #include "exec/memory.h" 51 #include "exec/address-spaces.h" 52 #include "sysemu/arch_init.h" 53 #include "qemu/bitmap.h" 54 #include "qemu/config-file.h" 55 #include "hw/acpi/acpi.h" 56 #include "hw/cpu/icc_bus.h" 57 #include "hw/boards.h" 58 59 /* debug PC/ISA interrupts */ 60 //#define DEBUG_IRQ 61 62 #ifdef DEBUG_IRQ 63 #define DPRINTF(fmt, ...) \ 64 do { printf("CPUIRQ: " fmt , ## __VA_ARGS__); } while (0) 65 #else 66 #define DPRINTF(fmt, ...) 67 #endif 68 69 /* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */ 70 #define ACPI_DATA_SIZE 0x10000 71 #define BIOS_CFG_IOPORT 0x510 72 #define FW_CFG_ACPI_TABLES (FW_CFG_ARCH_LOCAL + 0) 73 #define FW_CFG_SMBIOS_ENTRIES (FW_CFG_ARCH_LOCAL + 1) 74 #define FW_CFG_IRQ0_OVERRIDE (FW_CFG_ARCH_LOCAL + 2) 75 #define FW_CFG_E820_TABLE (FW_CFG_ARCH_LOCAL + 3) 76 #define FW_CFG_HPET (FW_CFG_ARCH_LOCAL + 4) 77 78 #define IO_APIC_DEFAULT_ADDRESS 0xfec00000 79 80 #define E820_NR_ENTRIES 16 81 82 struct e820_entry { 83 uint64_t address; 84 uint64_t length; 85 uint32_t type; 86 } QEMU_PACKED __attribute((__aligned__(4))); 87 88 struct e820_table { 89 uint32_t count; 90 struct e820_entry entry[E820_NR_ENTRIES]; 91 } QEMU_PACKED __attribute((__aligned__(4))); 92 93 static struct e820_table e820_table; 94 struct hpet_fw_config hpet_cfg = {.count = UINT8_MAX}; 95 96 void gsi_handler(void *opaque, int n, int level) 97 { 98 GSIState *s = opaque; 99 100 DPRINTF("pc: %s GSI %d\n", level ? "raising" : "lowering", n); 101 if (n < ISA_NUM_IRQS) { 102 qemu_set_irq(s->i8259_irq[n], level); 103 } 104 qemu_set_irq(s->ioapic_irq[n], level); 105 } 106 107 static void ioport80_write(void *opaque, hwaddr addr, uint64_t data, 108 unsigned size) 109 { 110 } 111 112 static uint64_t ioport80_read(void *opaque, hwaddr addr, unsigned size) 113 { 114 return 0xffffffffffffffffULL; 115 } 116 117 /* MSDOS compatibility mode FPU exception support */ 118 static qemu_irq ferr_irq; 119 120 void pc_register_ferr_irq(qemu_irq irq) 121 { 122 ferr_irq = irq; 123 } 124 125 /* XXX: add IGNNE support */ 126 void cpu_set_ferr(CPUX86State *s) 127 { 128 qemu_irq_raise(ferr_irq); 129 } 130 131 static void ioportF0_write(void *opaque, hwaddr addr, uint64_t data, 132 unsigned size) 133 { 134 qemu_irq_lower(ferr_irq); 135 } 136 137 static uint64_t ioportF0_read(void *opaque, hwaddr addr, unsigned size) 138 { 139 return 0xffffffffffffffffULL; 140 } 141 142 /* TSC handling */ 143 uint64_t cpu_get_tsc(CPUX86State *env) 144 { 145 return cpu_get_ticks(); 146 } 147 148 /* SMM support */ 149 150 static cpu_set_smm_t smm_set; 151 static void *smm_arg; 152 153 void cpu_smm_register(cpu_set_smm_t callback, void *arg) 154 { 155 assert(smm_set == NULL); 156 assert(smm_arg == NULL); 157 smm_set = callback; 158 smm_arg = arg; 159 } 160 161 void cpu_smm_update(CPUX86State *env) 162 { 163 if (smm_set && smm_arg && env == first_cpu) 164 smm_set(!!(env->hflags & HF_SMM_MASK), smm_arg); 165 } 166 167 168 /* IRQ handling */ 169 int cpu_get_pic_interrupt(CPUX86State *env) 170 { 171 int intno; 172 173 intno = apic_get_interrupt(env->apic_state); 174 if (intno >= 0) { 175 return intno; 176 } 177 /* read the irq from the PIC */ 178 if (!apic_accept_pic_intr(env->apic_state)) { 179 return -1; 180 } 181 182 intno = pic_read_irq(isa_pic); 183 return intno; 184 } 185 186 static void pic_irq_request(void *opaque, int irq, int level) 187 { 188 CPUX86State *env = first_cpu; 189 190 DPRINTF("pic_irqs: %s irq %d\n", level? "raise" : "lower", irq); 191 if (env->apic_state) { 192 while (env) { 193 if (apic_accept_pic_intr(env->apic_state)) { 194 apic_deliver_pic_intr(env->apic_state, level); 195 } 196 env = env->next_cpu; 197 } 198 } else { 199 CPUState *cs = CPU(x86_env_get_cpu(env)); 200 if (level) { 201 cpu_interrupt(cs, CPU_INTERRUPT_HARD); 202 } else { 203 cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); 204 } 205 } 206 } 207 208 /* PC cmos mappings */ 209 210 #define REG_EQUIPMENT_BYTE 0x14 211 212 static int cmos_get_fd_drive_type(FDriveType fd0) 213 { 214 int val; 215 216 switch (fd0) { 217 case FDRIVE_DRV_144: 218 /* 1.44 Mb 3"5 drive */ 219 val = 4; 220 break; 221 case FDRIVE_DRV_288: 222 /* 2.88 Mb 3"5 drive */ 223 val = 5; 224 break; 225 case FDRIVE_DRV_120: 226 /* 1.2 Mb 5"5 drive */ 227 val = 2; 228 break; 229 case FDRIVE_DRV_NONE: 230 default: 231 val = 0; 232 break; 233 } 234 return val; 235 } 236 237 static void cmos_init_hd(ISADevice *s, int type_ofs, int info_ofs, 238 int16_t cylinders, int8_t heads, int8_t sectors) 239 { 240 rtc_set_memory(s, type_ofs, 47); 241 rtc_set_memory(s, info_ofs, cylinders); 242 rtc_set_memory(s, info_ofs + 1, cylinders >> 8); 243 rtc_set_memory(s, info_ofs + 2, heads); 244 rtc_set_memory(s, info_ofs + 3, 0xff); 245 rtc_set_memory(s, info_ofs + 4, 0xff); 246 rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3)); 247 rtc_set_memory(s, info_ofs + 6, cylinders); 248 rtc_set_memory(s, info_ofs + 7, cylinders >> 8); 249 rtc_set_memory(s, info_ofs + 8, sectors); 250 } 251 252 /* convert boot_device letter to something recognizable by the bios */ 253 static int boot_device2nibble(char boot_device) 254 { 255 switch(boot_device) { 256 case 'a': 257 case 'b': 258 return 0x01; /* floppy boot */ 259 case 'c': 260 return 0x02; /* hard drive boot */ 261 case 'd': 262 return 0x03; /* CD-ROM boot */ 263 case 'n': 264 return 0x04; /* Network boot */ 265 } 266 return 0; 267 } 268 269 static int set_boot_dev(ISADevice *s, const char *boot_device) 270 { 271 #define PC_MAX_BOOT_DEVICES 3 272 int nbds, bds[3] = { 0, }; 273 int i; 274 275 nbds = strlen(boot_device); 276 if (nbds > PC_MAX_BOOT_DEVICES) { 277 error_report("Too many boot devices for PC"); 278 return(1); 279 } 280 for (i = 0; i < nbds; i++) { 281 bds[i] = boot_device2nibble(boot_device[i]); 282 if (bds[i] == 0) { 283 error_report("Invalid boot device for PC: '%c'", 284 boot_device[i]); 285 return(1); 286 } 287 } 288 rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]); 289 rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1)); 290 return(0); 291 } 292 293 static int pc_boot_set(void *opaque, const char *boot_device) 294 { 295 return set_boot_dev(opaque, boot_device); 296 } 297 298 typedef struct pc_cmos_init_late_arg { 299 ISADevice *rtc_state; 300 BusState *idebus[2]; 301 } pc_cmos_init_late_arg; 302 303 static void pc_cmos_init_late(void *opaque) 304 { 305 pc_cmos_init_late_arg *arg = opaque; 306 ISADevice *s = arg->rtc_state; 307 int16_t cylinders; 308 int8_t heads, sectors; 309 int val; 310 int i, trans; 311 312 val = 0; 313 if (ide_get_geometry(arg->idebus[0], 0, 314 &cylinders, &heads, §ors) >= 0) { 315 cmos_init_hd(s, 0x19, 0x1b, cylinders, heads, sectors); 316 val |= 0xf0; 317 } 318 if (ide_get_geometry(arg->idebus[0], 1, 319 &cylinders, &heads, §ors) >= 0) { 320 cmos_init_hd(s, 0x1a, 0x24, cylinders, heads, sectors); 321 val |= 0x0f; 322 } 323 rtc_set_memory(s, 0x12, val); 324 325 val = 0; 326 for (i = 0; i < 4; i++) { 327 /* NOTE: ide_get_geometry() returns the physical 328 geometry. It is always such that: 1 <= sects <= 63, 1 329 <= heads <= 16, 1 <= cylinders <= 16383. The BIOS 330 geometry can be different if a translation is done. */ 331 if (ide_get_geometry(arg->idebus[i / 2], i % 2, 332 &cylinders, &heads, §ors) >= 0) { 333 trans = ide_get_bios_chs_trans(arg->idebus[i / 2], i % 2) - 1; 334 assert((trans & ~3) == 0); 335 val |= trans << (i * 2); 336 } 337 } 338 rtc_set_memory(s, 0x39, val); 339 340 qemu_unregister_reset(pc_cmos_init_late, opaque); 341 } 342 343 typedef struct RTCCPUHotplugArg { 344 Notifier cpu_added_notifier; 345 ISADevice *rtc_state; 346 } RTCCPUHotplugArg; 347 348 static void rtc_notify_cpu_added(Notifier *notifier, void *data) 349 { 350 RTCCPUHotplugArg *arg = container_of(notifier, RTCCPUHotplugArg, 351 cpu_added_notifier); 352 ISADevice *s = arg->rtc_state; 353 354 /* increment the number of CPUs */ 355 rtc_set_memory(s, 0x5f, rtc_get_memory(s, 0x5f) + 1); 356 } 357 358 void pc_cmos_init(ram_addr_t ram_size, ram_addr_t above_4g_mem_size, 359 const char *boot_device, 360 ISADevice *floppy, BusState *idebus0, BusState *idebus1, 361 ISADevice *s) 362 { 363 int val, nb, i; 364 FDriveType fd_type[2] = { FDRIVE_DRV_NONE, FDRIVE_DRV_NONE }; 365 static pc_cmos_init_late_arg arg; 366 static RTCCPUHotplugArg cpu_hotplug_cb; 367 368 /* various important CMOS locations needed by PC/Bochs bios */ 369 370 /* memory size */ 371 /* base memory (first MiB) */ 372 val = MIN(ram_size / 1024, 640); 373 rtc_set_memory(s, 0x15, val); 374 rtc_set_memory(s, 0x16, val >> 8); 375 /* extended memory (next 64MiB) */ 376 if (ram_size > 1024 * 1024) { 377 val = (ram_size - 1024 * 1024) / 1024; 378 } else { 379 val = 0; 380 } 381 if (val > 65535) 382 val = 65535; 383 rtc_set_memory(s, 0x17, val); 384 rtc_set_memory(s, 0x18, val >> 8); 385 rtc_set_memory(s, 0x30, val); 386 rtc_set_memory(s, 0x31, val >> 8); 387 /* memory between 16MiB and 4GiB */ 388 if (ram_size > 16 * 1024 * 1024) { 389 val = (ram_size - 16 * 1024 * 1024) / 65536; 390 } else { 391 val = 0; 392 } 393 if (val > 65535) 394 val = 65535; 395 rtc_set_memory(s, 0x34, val); 396 rtc_set_memory(s, 0x35, val >> 8); 397 /* memory above 4GiB */ 398 val = above_4g_mem_size / 65536; 399 rtc_set_memory(s, 0x5b, val); 400 rtc_set_memory(s, 0x5c, val >> 8); 401 rtc_set_memory(s, 0x5d, val >> 16); 402 403 /* set the number of CPU */ 404 rtc_set_memory(s, 0x5f, smp_cpus - 1); 405 /* init CPU hotplug notifier */ 406 cpu_hotplug_cb.rtc_state = s; 407 cpu_hotplug_cb.cpu_added_notifier.notify = rtc_notify_cpu_added; 408 qemu_register_cpu_added_notifier(&cpu_hotplug_cb.cpu_added_notifier); 409 410 if (set_boot_dev(s, boot_device)) { 411 exit(1); 412 } 413 414 /* floppy type */ 415 if (floppy) { 416 for (i = 0; i < 2; i++) { 417 fd_type[i] = isa_fdc_get_drive_type(floppy, i); 418 } 419 } 420 val = (cmos_get_fd_drive_type(fd_type[0]) << 4) | 421 cmos_get_fd_drive_type(fd_type[1]); 422 rtc_set_memory(s, 0x10, val); 423 424 val = 0; 425 nb = 0; 426 if (fd_type[0] < FDRIVE_DRV_NONE) { 427 nb++; 428 } 429 if (fd_type[1] < FDRIVE_DRV_NONE) { 430 nb++; 431 } 432 switch (nb) { 433 case 0: 434 break; 435 case 1: 436 val |= 0x01; /* 1 drive, ready for boot */ 437 break; 438 case 2: 439 val |= 0x41; /* 2 drives, ready for boot */ 440 break; 441 } 442 val |= 0x02; /* FPU is there */ 443 val |= 0x04; /* PS/2 mouse installed */ 444 rtc_set_memory(s, REG_EQUIPMENT_BYTE, val); 445 446 /* hard drives */ 447 arg.rtc_state = s; 448 arg.idebus[0] = idebus0; 449 arg.idebus[1] = idebus1; 450 qemu_register_reset(pc_cmos_init_late, &arg); 451 } 452 453 #define TYPE_PORT92 "port92" 454 #define PORT92(obj) OBJECT_CHECK(Port92State, (obj), TYPE_PORT92) 455 456 /* port 92 stuff: could be split off */ 457 typedef struct Port92State { 458 ISADevice parent_obj; 459 460 MemoryRegion io; 461 uint8_t outport; 462 qemu_irq *a20_out; 463 } Port92State; 464 465 static void port92_write(void *opaque, hwaddr addr, uint64_t val, 466 unsigned size) 467 { 468 Port92State *s = opaque; 469 470 DPRINTF("port92: write 0x%02x\n", val); 471 s->outport = val; 472 qemu_set_irq(*s->a20_out, (val >> 1) & 1); 473 if (val & 1) { 474 qemu_system_reset_request(); 475 } 476 } 477 478 static uint64_t port92_read(void *opaque, hwaddr addr, 479 unsigned size) 480 { 481 Port92State *s = opaque; 482 uint32_t ret; 483 484 ret = s->outport; 485 DPRINTF("port92: read 0x%02x\n", ret); 486 return ret; 487 } 488 489 static void port92_init(ISADevice *dev, qemu_irq *a20_out) 490 { 491 Port92State *s = PORT92(dev); 492 493 s->a20_out = a20_out; 494 } 495 496 static const VMStateDescription vmstate_port92_isa = { 497 .name = "port92", 498 .version_id = 1, 499 .minimum_version_id = 1, 500 .minimum_version_id_old = 1, 501 .fields = (VMStateField []) { 502 VMSTATE_UINT8(outport, Port92State), 503 VMSTATE_END_OF_LIST() 504 } 505 }; 506 507 static void port92_reset(DeviceState *d) 508 { 509 Port92State *s = PORT92(d); 510 511 s->outport &= ~1; 512 } 513 514 static const MemoryRegionOps port92_ops = { 515 .read = port92_read, 516 .write = port92_write, 517 .impl = { 518 .min_access_size = 1, 519 .max_access_size = 1, 520 }, 521 .endianness = DEVICE_LITTLE_ENDIAN, 522 }; 523 524 static void port92_initfn(Object *obj) 525 { 526 Port92State *s = PORT92(obj); 527 528 memory_region_init_io(&s->io, &port92_ops, s, "port92", 1); 529 530 s->outport = 0; 531 } 532 533 static void port92_realizefn(DeviceState *dev, Error **errp) 534 { 535 ISADevice *isadev = ISA_DEVICE(dev); 536 Port92State *s = PORT92(dev); 537 538 isa_register_ioport(isadev, &s->io, 0x92); 539 } 540 541 static void port92_class_initfn(ObjectClass *klass, void *data) 542 { 543 DeviceClass *dc = DEVICE_CLASS(klass); 544 545 dc->no_user = 1; 546 dc->realize = port92_realizefn; 547 dc->reset = port92_reset; 548 dc->vmsd = &vmstate_port92_isa; 549 } 550 551 static const TypeInfo port92_info = { 552 .name = TYPE_PORT92, 553 .parent = TYPE_ISA_DEVICE, 554 .instance_size = sizeof(Port92State), 555 .instance_init = port92_initfn, 556 .class_init = port92_class_initfn, 557 }; 558 559 static void port92_register_types(void) 560 { 561 type_register_static(&port92_info); 562 } 563 564 type_init(port92_register_types) 565 566 static void handle_a20_line_change(void *opaque, int irq, int level) 567 { 568 X86CPU *cpu = opaque; 569 570 /* XXX: send to all CPUs ? */ 571 /* XXX: add logic to handle multiple A20 line sources */ 572 x86_cpu_set_a20(cpu, level); 573 } 574 575 int e820_add_entry(uint64_t address, uint64_t length, uint32_t type) 576 { 577 int index = le32_to_cpu(e820_table.count); 578 struct e820_entry *entry; 579 580 if (index >= E820_NR_ENTRIES) 581 return -EBUSY; 582 entry = &e820_table.entry[index++]; 583 584 entry->address = cpu_to_le64(address); 585 entry->length = cpu_to_le64(length); 586 entry->type = cpu_to_le32(type); 587 588 e820_table.count = cpu_to_le32(index); 589 return index; 590 } 591 592 /* Calculates the limit to CPU APIC ID values 593 * 594 * This function returns the limit for the APIC ID value, so that all 595 * CPU APIC IDs are < pc_apic_id_limit(). 596 * 597 * This is used for FW_CFG_MAX_CPUS. See comments on bochs_bios_init(). 598 */ 599 static unsigned int pc_apic_id_limit(unsigned int max_cpus) 600 { 601 return x86_cpu_apic_id_from_index(max_cpus - 1) + 1; 602 } 603 604 static FWCfgState *bochs_bios_init(void) 605 { 606 FWCfgState *fw_cfg; 607 uint8_t *smbios_table; 608 size_t smbios_len; 609 uint64_t *numa_fw_cfg; 610 int i, j; 611 unsigned int apic_id_limit = pc_apic_id_limit(max_cpus); 612 613 fw_cfg = fw_cfg_init(BIOS_CFG_IOPORT, BIOS_CFG_IOPORT + 1, 0, 0); 614 /* FW_CFG_MAX_CPUS is a bit confusing/problematic on x86: 615 * 616 * SeaBIOS needs FW_CFG_MAX_CPUS for CPU hotplug, but the CPU hotplug 617 * QEMU<->SeaBIOS interface is not based on the "CPU index", but on the APIC 618 * ID of hotplugged CPUs[1]. This means that FW_CFG_MAX_CPUS is not the 619 * "maximum number of CPUs", but the "limit to the APIC ID values SeaBIOS 620 * may see". 621 * 622 * So, this means we must not use max_cpus, here, but the maximum possible 623 * APIC ID value, plus one. 624 * 625 * [1] The only kind of "CPU identifier" used between SeaBIOS and QEMU is 626 * the APIC ID, not the "CPU index" 627 */ 628 fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)apic_id_limit); 629 fw_cfg_add_i32(fw_cfg, FW_CFG_ID, 1); 630 fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size); 631 fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES, 632 acpi_tables, acpi_tables_len); 633 fw_cfg_add_i32(fw_cfg, FW_CFG_IRQ0_OVERRIDE, kvm_allows_irq0_override()); 634 635 smbios_table = smbios_get_table(&smbios_len); 636 if (smbios_table) 637 fw_cfg_add_bytes(fw_cfg, FW_CFG_SMBIOS_ENTRIES, 638 smbios_table, smbios_len); 639 fw_cfg_add_bytes(fw_cfg, FW_CFG_E820_TABLE, 640 &e820_table, sizeof(e820_table)); 641 642 fw_cfg_add_bytes(fw_cfg, FW_CFG_HPET, &hpet_cfg, sizeof(hpet_cfg)); 643 /* allocate memory for the NUMA channel: one (64bit) word for the number 644 * of nodes, one word for each VCPU->node and one word for each node to 645 * hold the amount of memory. 646 */ 647 numa_fw_cfg = g_new0(uint64_t, 1 + apic_id_limit + nb_numa_nodes); 648 numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes); 649 for (i = 0; i < max_cpus; i++) { 650 unsigned int apic_id = x86_cpu_apic_id_from_index(i); 651 assert(apic_id < apic_id_limit); 652 for (j = 0; j < nb_numa_nodes; j++) { 653 if (test_bit(i, node_cpumask[j])) { 654 numa_fw_cfg[apic_id + 1] = cpu_to_le64(j); 655 break; 656 } 657 } 658 } 659 for (i = 0; i < nb_numa_nodes; i++) { 660 numa_fw_cfg[apic_id_limit + 1 + i] = cpu_to_le64(node_mem[i]); 661 } 662 fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, numa_fw_cfg, 663 (1 + apic_id_limit + nb_numa_nodes) * 664 sizeof(*numa_fw_cfg)); 665 666 return fw_cfg; 667 } 668 669 static long get_file_size(FILE *f) 670 { 671 long where, size; 672 673 /* XXX: on Unix systems, using fstat() probably makes more sense */ 674 675 where = ftell(f); 676 fseek(f, 0, SEEK_END); 677 size = ftell(f); 678 fseek(f, where, SEEK_SET); 679 680 return size; 681 } 682 683 static void load_linux(FWCfgState *fw_cfg, 684 const char *kernel_filename, 685 const char *initrd_filename, 686 const char *kernel_cmdline, 687 hwaddr max_ram_size) 688 { 689 uint16_t protocol; 690 int setup_size, kernel_size, initrd_size = 0, cmdline_size; 691 uint32_t initrd_max; 692 uint8_t header[8192], *setup, *kernel, *initrd_data; 693 hwaddr real_addr, prot_addr, cmdline_addr, initrd_addr = 0; 694 FILE *f; 695 char *vmode; 696 697 /* Align to 16 bytes as a paranoia measure */ 698 cmdline_size = (strlen(kernel_cmdline)+16) & ~15; 699 700 /* load the kernel header */ 701 f = fopen(kernel_filename, "rb"); 702 if (!f || !(kernel_size = get_file_size(f)) || 703 fread(header, 1, MIN(ARRAY_SIZE(header), kernel_size), f) != 704 MIN(ARRAY_SIZE(header), kernel_size)) { 705 fprintf(stderr, "qemu: could not load kernel '%s': %s\n", 706 kernel_filename, strerror(errno)); 707 exit(1); 708 } 709 710 /* kernel protocol version */ 711 #if 0 712 fprintf(stderr, "header magic: %#x\n", ldl_p(header+0x202)); 713 #endif 714 if (ldl_p(header+0x202) == 0x53726448) { 715 protocol = lduw_p(header+0x206); 716 } else { 717 /* This looks like a multiboot kernel. If it is, let's stop 718 treating it like a Linux kernel. */ 719 if (load_multiboot(fw_cfg, f, kernel_filename, initrd_filename, 720 kernel_cmdline, kernel_size, header)) { 721 return; 722 } 723 protocol = 0; 724 } 725 726 if (protocol < 0x200 || !(header[0x211] & 0x01)) { 727 /* Low kernel */ 728 real_addr = 0x90000; 729 cmdline_addr = 0x9a000 - cmdline_size; 730 prot_addr = 0x10000; 731 } else if (protocol < 0x202) { 732 /* High but ancient kernel */ 733 real_addr = 0x90000; 734 cmdline_addr = 0x9a000 - cmdline_size; 735 prot_addr = 0x100000; 736 } else { 737 /* High and recent kernel */ 738 real_addr = 0x10000; 739 cmdline_addr = 0x20000; 740 prot_addr = 0x100000; 741 } 742 743 #if 0 744 fprintf(stderr, 745 "qemu: real_addr = 0x" TARGET_FMT_plx "\n" 746 "qemu: cmdline_addr = 0x" TARGET_FMT_plx "\n" 747 "qemu: prot_addr = 0x" TARGET_FMT_plx "\n", 748 real_addr, 749 cmdline_addr, 750 prot_addr); 751 #endif 752 753 /* highest address for loading the initrd */ 754 if (protocol >= 0x203) { 755 initrd_max = ldl_p(header+0x22c); 756 } else { 757 initrd_max = 0x37ffffff; 758 } 759 760 if (initrd_max >= max_ram_size-ACPI_DATA_SIZE) 761 initrd_max = max_ram_size-ACPI_DATA_SIZE-1; 762 763 fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_ADDR, cmdline_addr); 764 fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(kernel_cmdline)+1); 765 fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA, kernel_cmdline); 766 767 if (protocol >= 0x202) { 768 stl_p(header+0x228, cmdline_addr); 769 } else { 770 stw_p(header+0x20, 0xA33F); 771 stw_p(header+0x22, cmdline_addr-real_addr); 772 } 773 774 /* handle vga= parameter */ 775 vmode = strstr(kernel_cmdline, "vga="); 776 if (vmode) { 777 unsigned int video_mode; 778 /* skip "vga=" */ 779 vmode += 4; 780 if (!strncmp(vmode, "normal", 6)) { 781 video_mode = 0xffff; 782 } else if (!strncmp(vmode, "ext", 3)) { 783 video_mode = 0xfffe; 784 } else if (!strncmp(vmode, "ask", 3)) { 785 video_mode = 0xfffd; 786 } else { 787 video_mode = strtol(vmode, NULL, 0); 788 } 789 stw_p(header+0x1fa, video_mode); 790 } 791 792 /* loader type */ 793 /* High nybble = B reserved for QEMU; low nybble is revision number. 794 If this code is substantially changed, you may want to consider 795 incrementing the revision. */ 796 if (protocol >= 0x200) { 797 header[0x210] = 0xB0; 798 } 799 /* heap */ 800 if (protocol >= 0x201) { 801 header[0x211] |= 0x80; /* CAN_USE_HEAP */ 802 stw_p(header+0x224, cmdline_addr-real_addr-0x200); 803 } 804 805 /* load initrd */ 806 if (initrd_filename) { 807 if (protocol < 0x200) { 808 fprintf(stderr, "qemu: linux kernel too old to load a ram disk\n"); 809 exit(1); 810 } 811 812 initrd_size = get_image_size(initrd_filename); 813 if (initrd_size < 0) { 814 fprintf(stderr, "qemu: error reading initrd %s\n", 815 initrd_filename); 816 exit(1); 817 } 818 819 initrd_addr = (initrd_max-initrd_size) & ~4095; 820 821 initrd_data = g_malloc(initrd_size); 822 load_image(initrd_filename, initrd_data); 823 824 fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_ADDR, initrd_addr); 825 fw_cfg_add_i32(fw_cfg, FW_CFG_INITRD_SIZE, initrd_size); 826 fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, initrd_data, initrd_size); 827 828 stl_p(header+0x218, initrd_addr); 829 stl_p(header+0x21c, initrd_size); 830 } 831 832 /* load kernel and setup */ 833 setup_size = header[0x1f1]; 834 if (setup_size == 0) { 835 setup_size = 4; 836 } 837 setup_size = (setup_size+1)*512; 838 kernel_size -= setup_size; 839 840 setup = g_malloc(setup_size); 841 kernel = g_malloc(kernel_size); 842 fseek(f, 0, SEEK_SET); 843 if (fread(setup, 1, setup_size, f) != setup_size) { 844 fprintf(stderr, "fread() failed\n"); 845 exit(1); 846 } 847 if (fread(kernel, 1, kernel_size, f) != kernel_size) { 848 fprintf(stderr, "fread() failed\n"); 849 exit(1); 850 } 851 fclose(f); 852 memcpy(setup, header, MIN(sizeof(header), setup_size)); 853 854 fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_ADDR, prot_addr); 855 fw_cfg_add_i32(fw_cfg, FW_CFG_KERNEL_SIZE, kernel_size); 856 fw_cfg_add_bytes(fw_cfg, FW_CFG_KERNEL_DATA, kernel, kernel_size); 857 858 fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_ADDR, real_addr); 859 fw_cfg_add_i32(fw_cfg, FW_CFG_SETUP_SIZE, setup_size); 860 fw_cfg_add_bytes(fw_cfg, FW_CFG_SETUP_DATA, setup, setup_size); 861 862 option_rom[nb_option_roms].name = "linuxboot.bin"; 863 option_rom[nb_option_roms].bootindex = 0; 864 nb_option_roms++; 865 } 866 867 #define NE2000_NB_MAX 6 868 869 static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360, 870 0x280, 0x380 }; 871 static const int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 }; 872 873 static const int parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc }; 874 static const int parallel_irq[MAX_PARALLEL_PORTS] = { 7, 7, 7 }; 875 876 void pc_init_ne2k_isa(ISABus *bus, NICInfo *nd) 877 { 878 static int nb_ne2k = 0; 879 880 if (nb_ne2k == NE2000_NB_MAX) 881 return; 882 isa_ne2000_init(bus, ne2000_io[nb_ne2k], 883 ne2000_irq[nb_ne2k], nd); 884 nb_ne2k++; 885 } 886 887 DeviceState *cpu_get_current_apic(void) 888 { 889 if (cpu_single_env) { 890 return cpu_single_env->apic_state; 891 } else { 892 return NULL; 893 } 894 } 895 896 void pc_acpi_smi_interrupt(void *opaque, int irq, int level) 897 { 898 X86CPU *cpu = opaque; 899 900 if (level) { 901 cpu_interrupt(CPU(cpu), CPU_INTERRUPT_SMI); 902 } 903 } 904 905 static X86CPU *pc_new_cpu(const char *cpu_model, int64_t apic_id, 906 DeviceState *icc_bridge, Error **errp) 907 { 908 X86CPU *cpu; 909 Error *local_err = NULL; 910 911 cpu = cpu_x86_create(cpu_model, icc_bridge, errp); 912 if (!cpu) { 913 return cpu; 914 } 915 916 object_property_set_int(OBJECT(cpu), apic_id, "apic-id", &local_err); 917 object_property_set_bool(OBJECT(cpu), true, "realized", &local_err); 918 919 if (local_err) { 920 if (cpu != NULL) { 921 object_unref(OBJECT(cpu)); 922 cpu = NULL; 923 } 924 error_propagate(errp, local_err); 925 } 926 return cpu; 927 } 928 929 static const char *current_cpu_model; 930 931 void pc_hot_add_cpu(const int64_t id, Error **errp) 932 { 933 DeviceState *icc_bridge; 934 int64_t apic_id = x86_cpu_apic_id_from_index(id); 935 936 if (id < 0) { 937 error_setg(errp, "Invalid CPU id: %" PRIi64, id); 938 return; 939 } 940 941 if (cpu_exists(apic_id)) { 942 error_setg(errp, "Unable to add CPU: %" PRIi64 943 ", it already exists", id); 944 return; 945 } 946 947 if (id >= max_cpus) { 948 error_setg(errp, "Unable to add CPU: %" PRIi64 949 ", max allowed: %d", id, max_cpus - 1); 950 return; 951 } 952 953 icc_bridge = DEVICE(object_resolve_path_type("icc-bridge", 954 TYPE_ICC_BRIDGE, NULL)); 955 pc_new_cpu(current_cpu_model, apic_id, icc_bridge, errp); 956 } 957 958 void pc_cpus_init(const char *cpu_model, DeviceState *icc_bridge) 959 { 960 int i; 961 X86CPU *cpu = NULL; 962 Error *error = NULL; 963 964 /* init CPUs */ 965 if (cpu_model == NULL) { 966 #ifdef TARGET_X86_64 967 cpu_model = "qemu64"; 968 #else 969 cpu_model = "qemu32"; 970 #endif 971 } 972 current_cpu_model = cpu_model; 973 974 for (i = 0; i < smp_cpus; i++) { 975 cpu = pc_new_cpu(cpu_model, x86_cpu_apic_id_from_index(i), 976 icc_bridge, &error); 977 if (error) { 978 fprintf(stderr, "%s\n", error_get_pretty(error)); 979 error_free(error); 980 exit(1); 981 } 982 } 983 984 /* map APIC MMIO area if CPU has APIC */ 985 if (cpu && cpu->env.apic_state) { 986 /* XXX: what if the base changes? */ 987 sysbus_mmio_map_overlap(SYS_BUS_DEVICE(icc_bridge), 0, 988 APIC_DEFAULT_ADDRESS, 0x1000); 989 } 990 } 991 992 void pc_acpi_init(const char *default_dsdt) 993 { 994 char *filename; 995 996 if (acpi_tables != NULL) { 997 /* manually set via -acpitable, leave it alone */ 998 return; 999 } 1000 1001 filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, default_dsdt); 1002 if (filename == NULL) { 1003 fprintf(stderr, "WARNING: failed to find %s\n", default_dsdt); 1004 } else { 1005 char *arg; 1006 QemuOpts *opts; 1007 Error *err = NULL; 1008 1009 arg = g_strdup_printf("file=%s", filename); 1010 1011 /* creates a deep copy of "arg" */ 1012 opts = qemu_opts_parse(qemu_find_opts("acpi"), arg, 0); 1013 g_assert(opts != NULL); 1014 1015 acpi_table_add(opts, &err); 1016 if (err) { 1017 fprintf(stderr, "WARNING: failed to load %s: %s\n", filename, 1018 error_get_pretty(err)); 1019 error_free(err); 1020 } 1021 g_free(arg); 1022 g_free(filename); 1023 } 1024 } 1025 1026 FWCfgState *pc_memory_init(MemoryRegion *system_memory, 1027 const char *kernel_filename, 1028 const char *kernel_cmdline, 1029 const char *initrd_filename, 1030 ram_addr_t below_4g_mem_size, 1031 ram_addr_t above_4g_mem_size, 1032 MemoryRegion *rom_memory, 1033 MemoryRegion **ram_memory) 1034 { 1035 int linux_boot, i; 1036 MemoryRegion *ram, *option_rom_mr; 1037 MemoryRegion *ram_below_4g, *ram_above_4g; 1038 FWCfgState *fw_cfg; 1039 1040 linux_boot = (kernel_filename != NULL); 1041 1042 /* Allocate RAM. We allocate it as a single memory region and use 1043 * aliases to address portions of it, mostly for backwards compatibility 1044 * with older qemus that used qemu_ram_alloc(). 1045 */ 1046 ram = g_malloc(sizeof(*ram)); 1047 memory_region_init_ram(ram, "pc.ram", 1048 below_4g_mem_size + above_4g_mem_size); 1049 vmstate_register_ram_global(ram); 1050 *ram_memory = ram; 1051 ram_below_4g = g_malloc(sizeof(*ram_below_4g)); 1052 memory_region_init_alias(ram_below_4g, "ram-below-4g", ram, 1053 0, below_4g_mem_size); 1054 memory_region_add_subregion(system_memory, 0, ram_below_4g); 1055 if (above_4g_mem_size > 0) { 1056 ram_above_4g = g_malloc(sizeof(*ram_above_4g)); 1057 memory_region_init_alias(ram_above_4g, "ram-above-4g", ram, 1058 below_4g_mem_size, above_4g_mem_size); 1059 memory_region_add_subregion(system_memory, 0x100000000ULL, 1060 ram_above_4g); 1061 } 1062 1063 1064 /* Initialize PC system firmware */ 1065 pc_system_firmware_init(rom_memory); 1066 1067 option_rom_mr = g_malloc(sizeof(*option_rom_mr)); 1068 memory_region_init_ram(option_rom_mr, "pc.rom", PC_ROM_SIZE); 1069 vmstate_register_ram_global(option_rom_mr); 1070 memory_region_add_subregion_overlap(rom_memory, 1071 PC_ROM_MIN_VGA, 1072 option_rom_mr, 1073 1); 1074 1075 fw_cfg = bochs_bios_init(); 1076 rom_set_fw(fw_cfg); 1077 1078 if (linux_boot) { 1079 load_linux(fw_cfg, kernel_filename, initrd_filename, kernel_cmdline, below_4g_mem_size); 1080 } 1081 1082 for (i = 0; i < nb_option_roms; i++) { 1083 rom_add_option(option_rom[i].name, option_rom[i].bootindex); 1084 } 1085 return fw_cfg; 1086 } 1087 1088 qemu_irq *pc_allocate_cpu_irq(void) 1089 { 1090 return qemu_allocate_irqs(pic_irq_request, NULL, 1); 1091 } 1092 1093 DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus *pci_bus) 1094 { 1095 DeviceState *dev = NULL; 1096 1097 if (pci_bus) { 1098 PCIDevice *pcidev = pci_vga_init(pci_bus); 1099 dev = pcidev ? &pcidev->qdev : NULL; 1100 } else if (isa_bus) { 1101 ISADevice *isadev = isa_vga_init(isa_bus); 1102 dev = isadev ? DEVICE(isadev) : NULL; 1103 } 1104 return dev; 1105 } 1106 1107 static void cpu_request_exit(void *opaque, int irq, int level) 1108 { 1109 CPUX86State *env = cpu_single_env; 1110 1111 if (env && level) { 1112 cpu_exit(CPU(x86_env_get_cpu(env))); 1113 } 1114 } 1115 1116 static const MemoryRegionOps ioport80_io_ops = { 1117 .write = ioport80_write, 1118 .read = ioport80_read, 1119 .endianness = DEVICE_NATIVE_ENDIAN, 1120 .impl = { 1121 .min_access_size = 1, 1122 .max_access_size = 1, 1123 }, 1124 }; 1125 1126 static const MemoryRegionOps ioportF0_io_ops = { 1127 .write = ioportF0_write, 1128 .read = ioportF0_read, 1129 .endianness = DEVICE_NATIVE_ENDIAN, 1130 .impl = { 1131 .min_access_size = 1, 1132 .max_access_size = 1, 1133 }, 1134 }; 1135 1136 void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi, 1137 ISADevice **rtc_state, 1138 ISADevice **floppy, 1139 bool no_vmport) 1140 { 1141 int i; 1142 DriveInfo *fd[MAX_FD]; 1143 DeviceState *hpet = NULL; 1144 int pit_isa_irq = 0; 1145 qemu_irq pit_alt_irq = NULL; 1146 qemu_irq rtc_irq = NULL; 1147 qemu_irq *a20_line; 1148 ISADevice *i8042, *port92, *vmmouse, *pit = NULL; 1149 qemu_irq *cpu_exit_irq; 1150 MemoryRegion *ioport80_io = g_new(MemoryRegion, 1); 1151 MemoryRegion *ioportF0_io = g_new(MemoryRegion, 1); 1152 1153 memory_region_init_io(ioport80_io, &ioport80_io_ops, NULL, "ioport80", 1); 1154 memory_region_add_subregion(isa_bus->address_space_io, 0x80, ioport80_io); 1155 1156 memory_region_init_io(ioportF0_io, &ioportF0_io_ops, NULL, "ioportF0", 1); 1157 memory_region_add_subregion(isa_bus->address_space_io, 0xf0, ioportF0_io); 1158 1159 /* 1160 * Check if an HPET shall be created. 1161 * 1162 * Without KVM_CAP_PIT_STATE2, we cannot switch off the in-kernel PIT 1163 * when the HPET wants to take over. Thus we have to disable the latter. 1164 */ 1165 if (!no_hpet && (!kvm_irqchip_in_kernel() || kvm_has_pit_state2())) { 1166 hpet = sysbus_try_create_simple("hpet", HPET_BASE, NULL); 1167 1168 if (hpet) { 1169 for (i = 0; i < GSI_NUM_PINS; i++) { 1170 sysbus_connect_irq(SYS_BUS_DEVICE(hpet), i, gsi[i]); 1171 } 1172 pit_isa_irq = -1; 1173 pit_alt_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_PIT_INT); 1174 rtc_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_RTC_INT); 1175 } 1176 } 1177 *rtc_state = rtc_init(isa_bus, 2000, rtc_irq); 1178 1179 qemu_register_boot_set(pc_boot_set, *rtc_state); 1180 1181 if (!xen_enabled()) { 1182 if (kvm_irqchip_in_kernel()) { 1183 pit = kvm_pit_init(isa_bus, 0x40); 1184 } else { 1185 pit = pit_init(isa_bus, 0x40, pit_isa_irq, pit_alt_irq); 1186 } 1187 if (hpet) { 1188 /* connect PIT to output control line of the HPET */ 1189 qdev_connect_gpio_out(hpet, 0, qdev_get_gpio_in(DEVICE(pit), 0)); 1190 } 1191 pcspk_init(isa_bus, pit); 1192 } 1193 1194 for(i = 0; i < MAX_SERIAL_PORTS; i++) { 1195 if (serial_hds[i]) { 1196 serial_isa_init(isa_bus, i, serial_hds[i]); 1197 } 1198 } 1199 1200 for(i = 0; i < MAX_PARALLEL_PORTS; i++) { 1201 if (parallel_hds[i]) { 1202 parallel_init(isa_bus, i, parallel_hds[i]); 1203 } 1204 } 1205 1206 a20_line = qemu_allocate_irqs(handle_a20_line_change, 1207 x86_env_get_cpu(first_cpu), 2); 1208 i8042 = isa_create_simple(isa_bus, "i8042"); 1209 i8042_setup_a20_line(i8042, &a20_line[0]); 1210 if (!no_vmport) { 1211 vmport_init(isa_bus); 1212 vmmouse = isa_try_create(isa_bus, "vmmouse"); 1213 } else { 1214 vmmouse = NULL; 1215 } 1216 if (vmmouse) { 1217 DeviceState *dev = DEVICE(vmmouse); 1218 qdev_prop_set_ptr(dev, "ps2_mouse", i8042); 1219 qdev_init_nofail(dev); 1220 } 1221 port92 = isa_create_simple(isa_bus, "port92"); 1222 port92_init(port92, &a20_line[1]); 1223 1224 cpu_exit_irq = qemu_allocate_irqs(cpu_request_exit, NULL, 1); 1225 DMA_init(0, cpu_exit_irq); 1226 1227 for(i = 0; i < MAX_FD; i++) { 1228 fd[i] = drive_get(IF_FLOPPY, 0, i); 1229 } 1230 *floppy = fdctrl_init_isa(isa_bus, fd); 1231 } 1232 1233 void pc_nic_init(ISABus *isa_bus, PCIBus *pci_bus) 1234 { 1235 int i; 1236 1237 for (i = 0; i < nb_nics; i++) { 1238 NICInfo *nd = &nd_table[i]; 1239 1240 if (!pci_bus || (nd->model && strcmp(nd->model, "ne2k_isa") == 0)) { 1241 pc_init_ne2k_isa(isa_bus, nd); 1242 } else { 1243 pci_nic_init_nofail(nd, "e1000", NULL); 1244 } 1245 } 1246 } 1247 1248 void pc_pci_device_init(PCIBus *pci_bus) 1249 { 1250 int max_bus; 1251 int bus; 1252 1253 max_bus = drive_get_max_bus(IF_SCSI); 1254 for (bus = 0; bus <= max_bus; bus++) { 1255 pci_create_simple(pci_bus, -1, "lsi53c895a"); 1256 } 1257 } 1258 1259 void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name) 1260 { 1261 DeviceState *dev; 1262 SysBusDevice *d; 1263 unsigned int i; 1264 1265 if (kvm_irqchip_in_kernel()) { 1266 dev = qdev_create(NULL, "kvm-ioapic"); 1267 } else { 1268 dev = qdev_create(NULL, "ioapic"); 1269 } 1270 if (parent_name) { 1271 object_property_add_child(object_resolve_path(parent_name, NULL), 1272 "ioapic", OBJECT(dev), NULL); 1273 } 1274 qdev_init_nofail(dev); 1275 d = SYS_BUS_DEVICE(dev); 1276 sysbus_mmio_map(d, 0, IO_APIC_DEFAULT_ADDRESS); 1277 1278 for (i = 0; i < IOAPIC_NUM_PINS; i++) { 1279 gsi_state->ioapic_irq[i] = qdev_get_gpio_in(dev, i); 1280 } 1281 } 1282