1 /* 2 * bootloader support 3 * 4 * Copyright IBM, Corp. 2012 5 * 6 * Authors: 7 * Christian Borntraeger <borntraeger@de.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or (at your 10 * option) any later version. See the COPYING file in the top-level directory. 11 * 12 */ 13 14 #include "qemu/osdep.h" 15 #include "qemu-common.h" 16 #include "qapi/error.h" 17 #include "sysemu/reset.h" 18 #include "sysemu/sysemu.h" 19 #include "sysemu/tcg.h" 20 #include "cpu.h" 21 #include "elf.h" 22 #include "hw/loader.h" 23 #include "hw/boards.h" 24 #include "hw/s390x/virtio-ccw.h" 25 #include "hw/s390x/vfio-ccw.h" 26 #include "hw/s390x/css.h" 27 #include "hw/s390x/ebcdic.h" 28 #include "ipl.h" 29 #include "qemu/error-report.h" 30 #include "qemu/config-file.h" 31 #include "qemu/cutils.h" 32 #include "qemu/option.h" 33 #include "exec/exec-all.h" 34 35 #define KERN_IMAGE_START 0x010000UL 36 #define LINUX_MAGIC_ADDR 0x010008UL 37 #define KERN_PARM_AREA 0x010480UL 38 #define INITRD_START 0x800000UL 39 #define INITRD_PARM_START 0x010408UL 40 #define PARMFILE_START 0x001000UL 41 #define ZIPL_IMAGE_START 0x009000UL 42 #define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64) 43 44 static bool iplb_extended_needed(void *opaque) 45 { 46 S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL)); 47 48 return ipl->iplbext_migration; 49 } 50 51 static const VMStateDescription vmstate_iplb_extended = { 52 .name = "ipl/iplb_extended", 53 .version_id = 0, 54 .minimum_version_id = 0, 55 .needed = iplb_extended_needed, 56 .fields = (VMStateField[]) { 57 VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200), 58 VMSTATE_END_OF_LIST() 59 } 60 }; 61 62 static const VMStateDescription vmstate_iplb = { 63 .name = "ipl/iplb", 64 .version_id = 0, 65 .minimum_version_id = 0, 66 .fields = (VMStateField[]) { 67 VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110), 68 VMSTATE_UINT16(devno, IplParameterBlock), 69 VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88), 70 VMSTATE_END_OF_LIST() 71 }, 72 .subsections = (const VMStateDescription*[]) { 73 &vmstate_iplb_extended, 74 NULL 75 } 76 }; 77 78 static const VMStateDescription vmstate_ipl = { 79 .name = "ipl", 80 .version_id = 0, 81 .minimum_version_id = 0, 82 .fields = (VMStateField[]) { 83 VMSTATE_UINT64(compat_start_addr, S390IPLState), 84 VMSTATE_UINT64(compat_bios_start_addr, S390IPLState), 85 VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock), 86 VMSTATE_BOOL(iplb_valid, S390IPLState), 87 VMSTATE_UINT8(cssid, S390IPLState), 88 VMSTATE_UINT8(ssid, S390IPLState), 89 VMSTATE_UINT16(devno, S390IPLState), 90 VMSTATE_END_OF_LIST() 91 } 92 }; 93 94 static S390IPLState *get_ipl_device(void) 95 { 96 return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL)); 97 } 98 99 static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr) 100 { 101 uint64_t dstaddr = *(uint64_t *) opaque; 102 /* 103 * Assuming that our s390-ccw.img was linked for starting at address 0, 104 * we can simply add the destination address for the final location 105 */ 106 return srcaddr + dstaddr; 107 } 108 109 static void s390_ipl_realize(DeviceState *dev, Error **errp) 110 { 111 S390IPLState *ipl = S390_IPL(dev); 112 uint32_t *ipl_psw; 113 uint64_t pentry; 114 char *magic; 115 int kernel_size; 116 Error *err = NULL; 117 118 int bios_size; 119 char *bios_filename; 120 121 /* 122 * Always load the bios if it was enforced, 123 * even if an external kernel has been defined. 124 */ 125 if (!ipl->kernel || ipl->enforce_bios) { 126 uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL; 127 128 if (bios_name == NULL) { 129 bios_name = ipl->firmware; 130 } 131 132 bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 133 if (bios_filename == NULL) { 134 error_setg(&err, "could not find stage1 bootloader"); 135 goto error; 136 } 137 138 bios_size = load_elf(bios_filename, NULL, 139 bios_translate_addr, &fwbase, 140 &ipl->bios_start_addr, NULL, NULL, 1, 141 EM_S390, 0, 0); 142 if (bios_size > 0) { 143 /* Adjust ELF start address to final location */ 144 ipl->bios_start_addr += fwbase; 145 } else { 146 /* Try to load non-ELF file */ 147 bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, 148 4096); 149 ipl->bios_start_addr = ZIPL_IMAGE_START; 150 } 151 g_free(bios_filename); 152 153 if (bios_size == -1) { 154 error_setg(&err, "could not load bootloader '%s'", bios_name); 155 goto error; 156 } 157 158 /* default boot target is the bios */ 159 ipl->start_addr = ipl->bios_start_addr; 160 } 161 162 if (ipl->kernel) { 163 kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, 164 &pentry, NULL, 165 NULL, 1, EM_S390, 0, 0); 166 if (kernel_size < 0) { 167 kernel_size = load_image_targphys(ipl->kernel, 0, ram_size); 168 if (kernel_size < 0) { 169 error_setg(&err, "could not load kernel '%s'", ipl->kernel); 170 goto error; 171 } 172 /* if this is Linux use KERN_IMAGE_START */ 173 magic = rom_ptr(LINUX_MAGIC_ADDR, 6); 174 if (magic && !memcmp(magic, "S390EP", 6)) { 175 pentry = KERN_IMAGE_START; 176 } else { 177 /* if not Linux load the address of the (short) IPL PSW */ 178 ipl_psw = rom_ptr(4, 4); 179 if (ipl_psw) { 180 pentry = be32_to_cpu(*ipl_psw) & 0x7fffffffUL; 181 } else { 182 error_setg(&err, "Could not get IPL PSW"); 183 goto error; 184 } 185 } 186 } 187 /* 188 * Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the 189 * kernel parameters here as well. Note: For old kernels (up to 3.2) 190 * we can not rely on the ELF entry point - it was 0x800 (the SALIPL 191 * loader) and it won't work. For this case we force it to 0x10000, too. 192 */ 193 if (pentry == KERN_IMAGE_START || pentry == 0x800) { 194 char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1); 195 ipl->start_addr = KERN_IMAGE_START; 196 /* Overwrite parameters in the kernel image, which are "rom" */ 197 if (parm_area) { 198 strcpy(parm_area, ipl->cmdline); 199 } 200 } else { 201 ipl->start_addr = pentry; 202 } 203 204 if (ipl->initrd) { 205 ram_addr_t initrd_offset; 206 int initrd_size; 207 uint64_t *romptr; 208 209 initrd_offset = INITRD_START; 210 while (kernel_size + 0x100000 > initrd_offset) { 211 initrd_offset += 0x100000; 212 } 213 initrd_size = load_image_targphys(ipl->initrd, initrd_offset, 214 ram_size - initrd_offset); 215 if (initrd_size == -1) { 216 error_setg(&err, "could not load initrd '%s'", ipl->initrd); 217 goto error; 218 } 219 220 /* 221 * we have to overwrite values in the kernel image, 222 * which are "rom" 223 */ 224 romptr = rom_ptr(INITRD_PARM_START, 16); 225 if (romptr) { 226 stq_p(romptr, initrd_offset); 227 stq_p(romptr + 1, initrd_size); 228 } 229 } 230 } 231 /* 232 * Don't ever use the migrated values, they could come from a different 233 * BIOS and therefore don't work. But still migrate the values, so 234 * QEMUs relying on it don't break. 235 */ 236 ipl->compat_start_addr = ipl->start_addr; 237 ipl->compat_bios_start_addr = ipl->bios_start_addr; 238 qemu_register_reset(qdev_reset_all_fn, dev); 239 error: 240 error_propagate(errp, err); 241 } 242 243 static Property s390_ipl_properties[] = { 244 DEFINE_PROP_STRING("kernel", S390IPLState, kernel), 245 DEFINE_PROP_STRING("initrd", S390IPLState, initrd), 246 DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline), 247 DEFINE_PROP_STRING("firmware", S390IPLState, firmware), 248 DEFINE_PROP_STRING("netboot_fw", S390IPLState, netboot_fw), 249 DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false), 250 DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration, 251 true), 252 DEFINE_PROP_END_OF_LIST(), 253 }; 254 255 static void s390_ipl_set_boot_menu(S390IPLState *ipl) 256 { 257 QemuOptsList *plist = qemu_find_opts("boot-opts"); 258 QemuOpts *opts = QTAILQ_FIRST(&plist->head); 259 const char *tmp; 260 unsigned long splash_time = 0; 261 262 if (!get_boot_device(0)) { 263 if (boot_menu) { 264 error_report("boot menu requires a bootindex to be specified for " 265 "the IPL device"); 266 } 267 return; 268 } 269 270 switch (ipl->iplb.pbt) { 271 case S390_IPL_TYPE_CCW: 272 /* In the absence of -boot menu, use zipl parameters */ 273 if (!qemu_opt_get(opts, "menu")) { 274 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL; 275 return; 276 } 277 break; 278 case S390_IPL_TYPE_QEMU_SCSI: 279 break; 280 default: 281 if (boot_menu) { 282 error_report("boot menu is not supported for this device type"); 283 } 284 return; 285 } 286 287 if (!boot_menu) { 288 return; 289 } 290 291 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD; 292 293 tmp = qemu_opt_get(opts, "splash-time"); 294 295 if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) { 296 error_report("splash-time is invalid, forcing it to 0"); 297 ipl->qipl.boot_menu_timeout = 0; 298 return; 299 } 300 301 if (splash_time > 0xffffffff) { 302 error_report("splash-time is too large, forcing it to max value"); 303 ipl->qipl.boot_menu_timeout = 0xffffffff; 304 return; 305 } 306 307 ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time); 308 } 309 310 #define CCW_DEVTYPE_NONE 0x00 311 #define CCW_DEVTYPE_VIRTIO 0x01 312 #define CCW_DEVTYPE_VIRTIO_NET 0x02 313 #define CCW_DEVTYPE_SCSI 0x03 314 #define CCW_DEVTYPE_VFIO 0x04 315 316 static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype) 317 { 318 CcwDevice *ccw_dev = NULL; 319 int tmp_dt = CCW_DEVTYPE_NONE; 320 321 if (dev_st) { 322 VirtIONet *virtio_net_dev = (VirtIONet *) 323 object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET); 324 VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) 325 object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), 326 TYPE_VIRTIO_CCW_DEVICE); 327 VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *) 328 object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW); 329 330 if (virtio_ccw_dev) { 331 ccw_dev = CCW_DEVICE(virtio_ccw_dev); 332 if (virtio_net_dev) { 333 tmp_dt = CCW_DEVTYPE_VIRTIO_NET; 334 } else { 335 tmp_dt = CCW_DEVTYPE_VIRTIO; 336 } 337 } else if (vfio_ccw_dev) { 338 ccw_dev = CCW_DEVICE(vfio_ccw_dev); 339 tmp_dt = CCW_DEVTYPE_VFIO; 340 } else { 341 SCSIDevice *sd = (SCSIDevice *) 342 object_dynamic_cast(OBJECT(dev_st), 343 TYPE_SCSI_DEVICE); 344 if (sd) { 345 SCSIBus *bus = scsi_bus_from_device(sd); 346 VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus); 347 VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, 348 vdev); 349 350 ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw), 351 TYPE_CCW_DEVICE); 352 tmp_dt = CCW_DEVTYPE_SCSI; 353 } 354 } 355 } 356 if (devtype) { 357 *devtype = tmp_dt; 358 } 359 return ccw_dev; 360 } 361 362 static bool s390_gen_initial_iplb(S390IPLState *ipl) 363 { 364 DeviceState *dev_st; 365 CcwDevice *ccw_dev = NULL; 366 SCSIDevice *sd; 367 int devtype; 368 369 dev_st = get_boot_device(0); 370 if (dev_st) { 371 ccw_dev = s390_get_ccw_device(dev_st, &devtype); 372 } 373 374 /* 375 * Currently allow IPL only from CCW devices. 376 */ 377 if (ccw_dev) { 378 switch (devtype) { 379 case CCW_DEVTYPE_SCSI: 380 sd = SCSI_DEVICE(dev_st); 381 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); 382 ipl->iplb.blk0_len = 383 cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN); 384 ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI; 385 ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); 386 ipl->iplb.scsi.target = cpu_to_be16(sd->id); 387 ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); 388 ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); 389 ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; 390 break; 391 case CCW_DEVTYPE_VFIO: 392 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 393 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 394 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 395 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 396 break; 397 case CCW_DEVTYPE_VIRTIO_NET: 398 ipl->netboot = true; 399 /* Fall through to CCW_DEVTYPE_VIRTIO case */ 400 case CCW_DEVTYPE_VIRTIO: 401 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 402 ipl->iplb.blk0_len = 403 cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); 404 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 405 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 406 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 407 break; 408 } 409 410 if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) { 411 ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID; 412 } 413 414 return true; 415 } 416 417 return false; 418 } 419 420 int s390_ipl_set_loadparm(uint8_t *loadparm) 421 { 422 MachineState *machine = MACHINE(qdev_get_machine()); 423 char *lp = object_property_get_str(OBJECT(machine), "loadparm", NULL); 424 425 if (lp) { 426 int i; 427 428 /* lp is an uppercase string without leading/embedded spaces */ 429 for (i = 0; i < 8 && lp[i]; i++) { 430 loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]]; 431 } 432 433 if (i < 8) { 434 memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */ 435 } 436 437 g_free(lp); 438 return 0; 439 } 440 441 return -1; 442 } 443 444 static int load_netboot_image(Error **errp) 445 { 446 S390IPLState *ipl = get_ipl_device(); 447 char *netboot_filename; 448 MemoryRegion *sysmem = get_system_memory(); 449 MemoryRegion *mr = NULL; 450 void *ram_ptr = NULL; 451 int img_size = -1; 452 453 mr = memory_region_find(sysmem, 0, 1).mr; 454 if (!mr) { 455 error_setg(errp, "Failed to find memory region at address 0"); 456 return -1; 457 } 458 459 ram_ptr = memory_region_get_ram_ptr(mr); 460 if (!ram_ptr) { 461 error_setg(errp, "No RAM found"); 462 goto unref_mr; 463 } 464 465 netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw); 466 if (netboot_filename == NULL) { 467 error_setg(errp, "Could not find network bootloader '%s'", 468 ipl->netboot_fw); 469 goto unref_mr; 470 } 471 472 img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL, 473 &ipl->start_addr, 474 NULL, NULL, 1, EM_S390, 0, 0, NULL, false); 475 476 if (img_size < 0) { 477 img_size = load_image_size(netboot_filename, ram_ptr, ram_size); 478 ipl->start_addr = KERN_IMAGE_START; 479 } 480 481 if (img_size < 0) { 482 error_setg(errp, "Failed to load network bootloader"); 483 } 484 485 g_free(netboot_filename); 486 487 unref_mr: 488 memory_region_unref(mr); 489 return img_size; 490 } 491 492 static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb, 493 int virtio_id) 494 { 495 uint8_t cssid; 496 uint8_t ssid; 497 uint16_t devno; 498 uint16_t schid; 499 SubchDev *sch = NULL; 500 501 if (iplb->pbt != S390_IPL_TYPE_CCW) { 502 return false; 503 } 504 505 devno = be16_to_cpu(iplb->ccw.devno); 506 ssid = iplb->ccw.ssid & 3; 507 508 for (schid = 0; schid < MAX_SCHID; schid++) { 509 for (cssid = 0; cssid < MAX_CSSID; cssid++) { 510 sch = css_find_subch(1, cssid, ssid, schid); 511 512 if (sch && sch->devno == devno) { 513 return sch->id.cu_model == virtio_id; 514 } 515 } 516 } 517 return false; 518 } 519 520 static bool is_virtio_net_device(IplParameterBlock *iplb) 521 { 522 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET); 523 } 524 525 static bool is_virtio_scsi_device(IplParameterBlock *iplb) 526 { 527 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); 528 } 529 530 void s390_ipl_update_diag308(IplParameterBlock *iplb) 531 { 532 S390IPLState *ipl = get_ipl_device(); 533 534 ipl->iplb = *iplb; 535 ipl->iplb_valid = true; 536 ipl->netboot = is_virtio_net_device(iplb); 537 } 538 539 IplParameterBlock *s390_ipl_get_iplb(void) 540 { 541 S390IPLState *ipl = get_ipl_device(); 542 543 if (!ipl->iplb_valid) { 544 return NULL; 545 } 546 return &ipl->iplb; 547 } 548 549 void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) 550 { 551 S390IPLState *ipl = get_ipl_device(); 552 553 if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { 554 /* use CPU 0 for full resets */ 555 ipl->reset_cpu_index = 0; 556 } else { 557 ipl->reset_cpu_index = cs->cpu_index; 558 } 559 ipl->reset_type = reset_type; 560 561 if (reset_type == S390_RESET_REIPL && 562 ipl->iplb_valid && 563 !ipl->netboot && 564 ipl->iplb.pbt == S390_IPL_TYPE_CCW && 565 is_virtio_scsi_device(&ipl->iplb)) { 566 CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0), NULL); 567 568 if (ccw_dev && 569 cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno && 570 (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) { 571 /* 572 * this is the original boot device's SCSI 573 * so restore IPL parameter info from it 574 */ 575 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 576 } 577 } 578 if (reset_type == S390_RESET_MODIFIED_CLEAR || 579 reset_type == S390_RESET_LOAD_NORMAL) { 580 /* ignore -no-reboot, send no event */ 581 qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); 582 } else { 583 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 584 } 585 /* as this is triggered by a CPU, make sure to exit the loop */ 586 if (tcg_enabled()) { 587 cpu_loop_exit(cs); 588 } 589 } 590 591 void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type) 592 { 593 S390IPLState *ipl = get_ipl_device(); 594 595 *cs = qemu_get_cpu(ipl->reset_cpu_index); 596 if (!*cs) { 597 /* use any CPU */ 598 *cs = first_cpu; 599 } 600 *reset_type = ipl->reset_type; 601 } 602 603 void s390_ipl_clear_reset_request(void) 604 { 605 S390IPLState *ipl = get_ipl_device(); 606 607 ipl->reset_type = S390_RESET_EXTERNAL; 608 /* use CPU 0 for full resets */ 609 ipl->reset_cpu_index = 0; 610 } 611 612 static void s390_ipl_prepare_qipl(S390CPU *cpu) 613 { 614 S390IPLState *ipl = get_ipl_device(); 615 uint8_t *addr; 616 uint64_t len = 4096; 617 618 addr = cpu_physical_memory_map(cpu->env.psa, &len, 1); 619 if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) { 620 error_report("Cannot set QEMU IPL parameters"); 621 return; 622 } 623 memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters)); 624 cpu_physical_memory_unmap(addr, len, 1, len); 625 } 626 627 void s390_ipl_prepare_cpu(S390CPU *cpu) 628 { 629 S390IPLState *ipl = get_ipl_device(); 630 Error *err = NULL; 631 632 cpu->env.psw.addr = ipl->start_addr; 633 cpu->env.psw.mask = IPL_PSW_MASK; 634 635 if (!ipl->kernel || ipl->iplb_valid) { 636 cpu->env.psw.addr = ipl->bios_start_addr; 637 if (!ipl->iplb_valid) { 638 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 639 } 640 } 641 if (ipl->netboot) { 642 if (load_netboot_image(&err) < 0) { 643 error_report_err(err); 644 exit(1); 645 } 646 ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); 647 } 648 s390_ipl_set_boot_menu(ipl); 649 s390_ipl_prepare_qipl(cpu); 650 } 651 652 static void s390_ipl_reset(DeviceState *dev) 653 { 654 S390IPLState *ipl = S390_IPL(dev); 655 656 if (ipl->reset_type != S390_RESET_REIPL) { 657 ipl->iplb_valid = false; 658 memset(&ipl->iplb, 0, sizeof(IplParameterBlock)); 659 } 660 } 661 662 static void s390_ipl_class_init(ObjectClass *klass, void *data) 663 { 664 DeviceClass *dc = DEVICE_CLASS(klass); 665 666 dc->realize = s390_ipl_realize; 667 dc->props = s390_ipl_properties; 668 dc->reset = s390_ipl_reset; 669 dc->vmsd = &vmstate_ipl; 670 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 671 /* Reason: Loads the ROMs and thus can only be used one time - internally */ 672 dc->user_creatable = false; 673 } 674 675 static const TypeInfo s390_ipl_info = { 676 .class_init = s390_ipl_class_init, 677 .parent = TYPE_DEVICE, 678 .name = TYPE_S390_IPL, 679 .instance_size = sizeof(S390IPLState), 680 }; 681 682 static void s390_ipl_register_types(void) 683 { 684 type_register_static(&s390_ipl_info); 685 } 686 687 type_init(s390_ipl_register_types) 688