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/runstate.h" 19 #include "sysemu/sysemu.h" 20 #include "sysemu/tcg.h" 21 #include "cpu.h" 22 #include "elf.h" 23 #include "hw/loader.h" 24 #include "hw/qdev-properties.h" 25 #include "hw/boards.h" 26 #include "hw/s390x/virtio-ccw.h" 27 #include "hw/s390x/vfio-ccw.h" 28 #include "hw/s390x/css.h" 29 #include "hw/s390x/ebcdic.h" 30 #include "ipl.h" 31 #include "qemu/error-report.h" 32 #include "qemu/config-file.h" 33 #include "qemu/cutils.h" 34 #include "qemu/option.h" 35 #include "exec/exec-all.h" 36 37 #define KERN_IMAGE_START 0x010000UL 38 #define LINUX_MAGIC_ADDR 0x010008UL 39 #define KERN_PARM_AREA 0x010480UL 40 #define INITRD_START 0x800000UL 41 #define INITRD_PARM_START 0x010408UL 42 #define PARMFILE_START 0x001000UL 43 #define ZIPL_IMAGE_START 0x009000UL 44 #define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64) 45 46 static bool iplb_extended_needed(void *opaque) 47 { 48 S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL)); 49 50 return ipl->iplbext_migration; 51 } 52 53 static const VMStateDescription vmstate_iplb_extended = { 54 .name = "ipl/iplb_extended", 55 .version_id = 0, 56 .minimum_version_id = 0, 57 .needed = iplb_extended_needed, 58 .fields = (VMStateField[]) { 59 VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200), 60 VMSTATE_END_OF_LIST() 61 } 62 }; 63 64 static const VMStateDescription vmstate_iplb = { 65 .name = "ipl/iplb", 66 .version_id = 0, 67 .minimum_version_id = 0, 68 .fields = (VMStateField[]) { 69 VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110), 70 VMSTATE_UINT16(devno, IplParameterBlock), 71 VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88), 72 VMSTATE_END_OF_LIST() 73 }, 74 .subsections = (const VMStateDescription*[]) { 75 &vmstate_iplb_extended, 76 NULL 77 } 78 }; 79 80 static const VMStateDescription vmstate_ipl = { 81 .name = "ipl", 82 .version_id = 0, 83 .minimum_version_id = 0, 84 .fields = (VMStateField[]) { 85 VMSTATE_UINT64(compat_start_addr, S390IPLState), 86 VMSTATE_UINT64(compat_bios_start_addr, S390IPLState), 87 VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock), 88 VMSTATE_BOOL(iplb_valid, S390IPLState), 89 VMSTATE_UINT8(cssid, S390IPLState), 90 VMSTATE_UINT8(ssid, S390IPLState), 91 VMSTATE_UINT16(devno, S390IPLState), 92 VMSTATE_END_OF_LIST() 93 } 94 }; 95 96 static S390IPLState *get_ipl_device(void) 97 { 98 return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL)); 99 } 100 101 static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr) 102 { 103 uint64_t dstaddr = *(uint64_t *) opaque; 104 /* 105 * Assuming that our s390-ccw.img was linked for starting at address 0, 106 * we can simply add the destination address for the final location 107 */ 108 return srcaddr + dstaddr; 109 } 110 111 static void s390_ipl_realize(DeviceState *dev, Error **errp) 112 { 113 S390IPLState *ipl = S390_IPL(dev); 114 uint32_t *ipl_psw; 115 uint64_t pentry; 116 char *magic; 117 int kernel_size; 118 Error *err = NULL; 119 120 int bios_size; 121 char *bios_filename; 122 123 /* 124 * Always load the bios if it was enforced, 125 * even if an external kernel has been defined. 126 */ 127 if (!ipl->kernel || ipl->enforce_bios) { 128 uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL; 129 130 if (bios_name == NULL) { 131 bios_name = ipl->firmware; 132 } 133 134 bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 135 if (bios_filename == NULL) { 136 error_setg(&err, "could not find stage1 bootloader"); 137 goto error; 138 } 139 140 bios_size = load_elf(bios_filename, NULL, 141 bios_translate_addr, &fwbase, 142 &ipl->bios_start_addr, NULL, NULL, NULL, 1, 143 EM_S390, 0, 0); 144 if (bios_size > 0) { 145 /* Adjust ELF start address to final location */ 146 ipl->bios_start_addr += fwbase; 147 } else { 148 /* Try to load non-ELF file */ 149 bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, 150 4096); 151 ipl->bios_start_addr = ZIPL_IMAGE_START; 152 } 153 g_free(bios_filename); 154 155 if (bios_size == -1) { 156 error_setg(&err, "could not load bootloader '%s'", bios_name); 157 goto error; 158 } 159 160 /* default boot target is the bios */ 161 ipl->start_addr = ipl->bios_start_addr; 162 } 163 164 if (ipl->kernel) { 165 kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, 166 &pentry, NULL, 167 NULL, NULL, 1, EM_S390, 0, 0); 168 if (kernel_size < 0) { 169 kernel_size = load_image_targphys(ipl->kernel, 0, ram_size); 170 if (kernel_size < 0) { 171 error_setg(&err, "could not load kernel '%s'", ipl->kernel); 172 goto error; 173 } 174 /* if this is Linux use KERN_IMAGE_START */ 175 magic = rom_ptr(LINUX_MAGIC_ADDR, 6); 176 if (magic && !memcmp(magic, "S390EP", 6)) { 177 pentry = KERN_IMAGE_START; 178 } else { 179 /* if not Linux load the address of the (short) IPL PSW */ 180 ipl_psw = rom_ptr(4, 4); 181 if (ipl_psw) { 182 pentry = be32_to_cpu(*ipl_psw) & PSW_MASK_SHORT_ADDR; 183 } else { 184 error_setg(&err, "Could not get IPL PSW"); 185 goto error; 186 } 187 } 188 } 189 /* 190 * Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the 191 * kernel parameters here as well. Note: For old kernels (up to 3.2) 192 * we can not rely on the ELF entry point - it was 0x800 (the SALIPL 193 * loader) and it won't work. For this case we force it to 0x10000, too. 194 */ 195 if (pentry == KERN_IMAGE_START || pentry == 0x800) { 196 char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1); 197 ipl->start_addr = KERN_IMAGE_START; 198 /* Overwrite parameters in the kernel image, which are "rom" */ 199 if (parm_area) { 200 strcpy(parm_area, ipl->cmdline); 201 } 202 } else { 203 ipl->start_addr = pentry; 204 } 205 206 if (ipl->initrd) { 207 ram_addr_t initrd_offset; 208 int initrd_size; 209 uint64_t *romptr; 210 211 initrd_offset = INITRD_START; 212 while (kernel_size + 0x100000 > initrd_offset) { 213 initrd_offset += 0x100000; 214 } 215 initrd_size = load_image_targphys(ipl->initrd, initrd_offset, 216 ram_size - initrd_offset); 217 if (initrd_size == -1) { 218 error_setg(&err, "could not load initrd '%s'", ipl->initrd); 219 goto error; 220 } 221 222 /* 223 * we have to overwrite values in the kernel image, 224 * which are "rom" 225 */ 226 romptr = rom_ptr(INITRD_PARM_START, 16); 227 if (romptr) { 228 stq_p(romptr, initrd_offset); 229 stq_p(romptr + 1, initrd_size); 230 } 231 } 232 } 233 /* 234 * Don't ever use the migrated values, they could come from a different 235 * BIOS and therefore don't work. But still migrate the values, so 236 * QEMUs relying on it don't break. 237 */ 238 ipl->compat_start_addr = ipl->start_addr; 239 ipl->compat_bios_start_addr = ipl->bios_start_addr; 240 /* 241 * Because this Device is not on any bus in the qbus tree (it is 242 * not a sysbus device and it's not on some other bus like a PCI 243 * bus) it will not be automatically reset by the 'reset the 244 * sysbus' hook registered by vl.c like most devices. So we must 245 * manually register a reset hook for it. 246 * TODO: there should be a better way to do this. 247 */ 248 qemu_register_reset(resettable_cold_reset_fn, dev); 249 error: 250 error_propagate(errp, err); 251 } 252 253 static Property s390_ipl_properties[] = { 254 DEFINE_PROP_STRING("kernel", S390IPLState, kernel), 255 DEFINE_PROP_STRING("initrd", S390IPLState, initrd), 256 DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline), 257 DEFINE_PROP_STRING("firmware", S390IPLState, firmware), 258 DEFINE_PROP_STRING("netboot_fw", S390IPLState, netboot_fw), 259 DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false), 260 DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration, 261 true), 262 DEFINE_PROP_END_OF_LIST(), 263 }; 264 265 static void s390_ipl_set_boot_menu(S390IPLState *ipl) 266 { 267 QemuOptsList *plist = qemu_find_opts("boot-opts"); 268 QemuOpts *opts = QTAILQ_FIRST(&plist->head); 269 const char *tmp; 270 unsigned long splash_time = 0; 271 272 if (!get_boot_device(0)) { 273 if (boot_menu) { 274 error_report("boot menu requires a bootindex to be specified for " 275 "the IPL device"); 276 } 277 return; 278 } 279 280 switch (ipl->iplb.pbt) { 281 case S390_IPL_TYPE_CCW: 282 /* In the absence of -boot menu, use zipl parameters */ 283 if (!qemu_opt_get(opts, "menu")) { 284 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL; 285 return; 286 } 287 break; 288 case S390_IPL_TYPE_QEMU_SCSI: 289 break; 290 default: 291 if (boot_menu) { 292 error_report("boot menu is not supported for this device type"); 293 } 294 return; 295 } 296 297 if (!boot_menu) { 298 return; 299 } 300 301 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD; 302 303 tmp = qemu_opt_get(opts, "splash-time"); 304 305 if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) { 306 error_report("splash-time is invalid, forcing it to 0"); 307 ipl->qipl.boot_menu_timeout = 0; 308 return; 309 } 310 311 if (splash_time > 0xffffffff) { 312 error_report("splash-time is too large, forcing it to max value"); 313 ipl->qipl.boot_menu_timeout = 0xffffffff; 314 return; 315 } 316 317 ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time); 318 } 319 320 #define CCW_DEVTYPE_NONE 0x00 321 #define CCW_DEVTYPE_VIRTIO 0x01 322 #define CCW_DEVTYPE_VIRTIO_NET 0x02 323 #define CCW_DEVTYPE_SCSI 0x03 324 #define CCW_DEVTYPE_VFIO 0x04 325 326 static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype) 327 { 328 CcwDevice *ccw_dev = NULL; 329 int tmp_dt = CCW_DEVTYPE_NONE; 330 331 if (dev_st) { 332 VirtIONet *virtio_net_dev = (VirtIONet *) 333 object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET); 334 VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) 335 object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), 336 TYPE_VIRTIO_CCW_DEVICE); 337 VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *) 338 object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW); 339 340 if (virtio_ccw_dev) { 341 ccw_dev = CCW_DEVICE(virtio_ccw_dev); 342 if (virtio_net_dev) { 343 tmp_dt = CCW_DEVTYPE_VIRTIO_NET; 344 } else { 345 tmp_dt = CCW_DEVTYPE_VIRTIO; 346 } 347 } else if (vfio_ccw_dev) { 348 ccw_dev = CCW_DEVICE(vfio_ccw_dev); 349 tmp_dt = CCW_DEVTYPE_VFIO; 350 } else { 351 SCSIDevice *sd = (SCSIDevice *) 352 object_dynamic_cast(OBJECT(dev_st), 353 TYPE_SCSI_DEVICE); 354 if (sd) { 355 SCSIBus *bus = scsi_bus_from_device(sd); 356 VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus); 357 VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, 358 vdev); 359 360 ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw), 361 TYPE_CCW_DEVICE); 362 tmp_dt = CCW_DEVTYPE_SCSI; 363 } 364 } 365 } 366 if (devtype) { 367 *devtype = tmp_dt; 368 } 369 return ccw_dev; 370 } 371 372 static bool s390_gen_initial_iplb(S390IPLState *ipl) 373 { 374 DeviceState *dev_st; 375 CcwDevice *ccw_dev = NULL; 376 SCSIDevice *sd; 377 int devtype; 378 379 dev_st = get_boot_device(0); 380 if (dev_st) { 381 ccw_dev = s390_get_ccw_device(dev_st, &devtype); 382 } 383 384 /* 385 * Currently allow IPL only from CCW devices. 386 */ 387 if (ccw_dev) { 388 switch (devtype) { 389 case CCW_DEVTYPE_SCSI: 390 sd = SCSI_DEVICE(dev_st); 391 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); 392 ipl->iplb.blk0_len = 393 cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN); 394 ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI; 395 ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); 396 ipl->iplb.scsi.target = cpu_to_be16(sd->id); 397 ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); 398 ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); 399 ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; 400 break; 401 case CCW_DEVTYPE_VFIO: 402 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 403 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 404 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 405 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 406 break; 407 case CCW_DEVTYPE_VIRTIO_NET: 408 ipl->netboot = true; 409 /* Fall through to CCW_DEVTYPE_VIRTIO case */ 410 case CCW_DEVTYPE_VIRTIO: 411 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 412 ipl->iplb.blk0_len = 413 cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); 414 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 415 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 416 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 417 break; 418 } 419 420 if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) { 421 ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID; 422 } 423 424 return true; 425 } 426 427 return false; 428 } 429 430 int s390_ipl_set_loadparm(uint8_t *loadparm) 431 { 432 MachineState *machine = MACHINE(qdev_get_machine()); 433 char *lp = object_property_get_str(OBJECT(machine), "loadparm", NULL); 434 435 if (lp) { 436 int i; 437 438 /* lp is an uppercase string without leading/embedded spaces */ 439 for (i = 0; i < 8 && lp[i]; i++) { 440 loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]]; 441 } 442 443 if (i < 8) { 444 memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */ 445 } 446 447 g_free(lp); 448 return 0; 449 } 450 451 return -1; 452 } 453 454 static int load_netboot_image(Error **errp) 455 { 456 S390IPLState *ipl = get_ipl_device(); 457 char *netboot_filename; 458 MemoryRegion *sysmem = get_system_memory(); 459 MemoryRegion *mr = NULL; 460 void *ram_ptr = NULL; 461 int img_size = -1; 462 463 mr = memory_region_find(sysmem, 0, 1).mr; 464 if (!mr) { 465 error_setg(errp, "Failed to find memory region at address 0"); 466 return -1; 467 } 468 469 ram_ptr = memory_region_get_ram_ptr(mr); 470 if (!ram_ptr) { 471 error_setg(errp, "No RAM found"); 472 goto unref_mr; 473 } 474 475 netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw); 476 if (netboot_filename == NULL) { 477 error_setg(errp, "Could not find network bootloader '%s'", 478 ipl->netboot_fw); 479 goto unref_mr; 480 } 481 482 img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL, 483 &ipl->start_addr, 484 NULL, NULL, NULL, 1, EM_S390, 0, 0, NULL, 485 false); 486 487 if (img_size < 0) { 488 img_size = load_image_size(netboot_filename, ram_ptr, ram_size); 489 ipl->start_addr = KERN_IMAGE_START; 490 } 491 492 if (img_size < 0) { 493 error_setg(errp, "Failed to load network bootloader"); 494 } 495 496 g_free(netboot_filename); 497 498 unref_mr: 499 memory_region_unref(mr); 500 return img_size; 501 } 502 503 static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb, 504 int virtio_id) 505 { 506 uint8_t cssid; 507 uint8_t ssid; 508 uint16_t devno; 509 uint16_t schid; 510 SubchDev *sch = NULL; 511 512 if (iplb->pbt != S390_IPL_TYPE_CCW) { 513 return false; 514 } 515 516 devno = be16_to_cpu(iplb->ccw.devno); 517 ssid = iplb->ccw.ssid & 3; 518 519 for (schid = 0; schid < MAX_SCHID; schid++) { 520 for (cssid = 0; cssid < MAX_CSSID; cssid++) { 521 sch = css_find_subch(1, cssid, ssid, schid); 522 523 if (sch && sch->devno == devno) { 524 return sch->id.cu_model == virtio_id; 525 } 526 } 527 } 528 return false; 529 } 530 531 static bool is_virtio_net_device(IplParameterBlock *iplb) 532 { 533 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET); 534 } 535 536 static bool is_virtio_scsi_device(IplParameterBlock *iplb) 537 { 538 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); 539 } 540 541 static void update_machine_ipl_properties(IplParameterBlock *iplb) 542 { 543 Object *machine = qdev_get_machine(); 544 Error *err = NULL; 545 546 /* Sync loadparm */ 547 if (iplb->flags & DIAG308_FLAGS_LP_VALID) { 548 uint8_t *ebcdic_loadparm = iplb->loadparm; 549 char ascii_loadparm[8]; 550 int i; 551 552 for (i = 0; i < 8 && ebcdic_loadparm[i]; i++) { 553 ascii_loadparm[i] = ebcdic2ascii[(uint8_t) ebcdic_loadparm[i]]; 554 } 555 ascii_loadparm[i] = 0; 556 object_property_set_str(machine, ascii_loadparm, "loadparm", &err); 557 } else { 558 object_property_set_str(machine, "", "loadparm", &err); 559 } 560 if (err) { 561 warn_report_err(err); 562 } 563 } 564 565 void s390_ipl_update_diag308(IplParameterBlock *iplb) 566 { 567 S390IPLState *ipl = get_ipl_device(); 568 569 ipl->iplb = *iplb; 570 ipl->iplb_valid = true; 571 ipl->netboot = is_virtio_net_device(iplb); 572 update_machine_ipl_properties(iplb); 573 } 574 575 IplParameterBlock *s390_ipl_get_iplb(void) 576 { 577 S390IPLState *ipl = get_ipl_device(); 578 579 if (!ipl->iplb_valid) { 580 return NULL; 581 } 582 return &ipl->iplb; 583 } 584 585 void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) 586 { 587 S390IPLState *ipl = get_ipl_device(); 588 589 if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { 590 /* use CPU 0 for full resets */ 591 ipl->reset_cpu_index = 0; 592 } else { 593 ipl->reset_cpu_index = cs->cpu_index; 594 } 595 ipl->reset_type = reset_type; 596 597 if (reset_type == S390_RESET_REIPL && 598 ipl->iplb_valid && 599 !ipl->netboot && 600 ipl->iplb.pbt == S390_IPL_TYPE_CCW && 601 is_virtio_scsi_device(&ipl->iplb)) { 602 CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0), NULL); 603 604 if (ccw_dev && 605 cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno && 606 (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) { 607 /* 608 * this is the original boot device's SCSI 609 * so restore IPL parameter info from it 610 */ 611 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 612 } 613 } 614 if (reset_type == S390_RESET_MODIFIED_CLEAR || 615 reset_type == S390_RESET_LOAD_NORMAL) { 616 /* ignore -no-reboot, send no event */ 617 qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); 618 } else { 619 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 620 } 621 /* as this is triggered by a CPU, make sure to exit the loop */ 622 if (tcg_enabled()) { 623 cpu_loop_exit(cs); 624 } 625 } 626 627 void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type) 628 { 629 S390IPLState *ipl = get_ipl_device(); 630 631 *cs = qemu_get_cpu(ipl->reset_cpu_index); 632 if (!*cs) { 633 /* use any CPU */ 634 *cs = first_cpu; 635 } 636 *reset_type = ipl->reset_type; 637 } 638 639 void s390_ipl_clear_reset_request(void) 640 { 641 S390IPLState *ipl = get_ipl_device(); 642 643 ipl->reset_type = S390_RESET_EXTERNAL; 644 /* use CPU 0 for full resets */ 645 ipl->reset_cpu_index = 0; 646 } 647 648 static void s390_ipl_prepare_qipl(S390CPU *cpu) 649 { 650 S390IPLState *ipl = get_ipl_device(); 651 uint8_t *addr; 652 uint64_t len = 4096; 653 654 addr = cpu_physical_memory_map(cpu->env.psa, &len, true); 655 if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) { 656 error_report("Cannot set QEMU IPL parameters"); 657 return; 658 } 659 memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters)); 660 cpu_physical_memory_unmap(addr, len, 1, len); 661 } 662 663 void s390_ipl_prepare_cpu(S390CPU *cpu) 664 { 665 S390IPLState *ipl = get_ipl_device(); 666 Error *err = NULL; 667 668 cpu->env.psw.addr = ipl->start_addr; 669 cpu->env.psw.mask = IPL_PSW_MASK; 670 671 if (!ipl->kernel || ipl->iplb_valid) { 672 cpu->env.psw.addr = ipl->bios_start_addr; 673 if (!ipl->iplb_valid) { 674 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 675 } 676 } 677 if (ipl->netboot) { 678 if (load_netboot_image(&err) < 0) { 679 error_report_err(err); 680 exit(1); 681 } 682 ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); 683 } 684 s390_ipl_set_boot_menu(ipl); 685 s390_ipl_prepare_qipl(cpu); 686 } 687 688 static void s390_ipl_reset(DeviceState *dev) 689 { 690 S390IPLState *ipl = S390_IPL(dev); 691 692 if (ipl->reset_type != S390_RESET_REIPL) { 693 ipl->iplb_valid = false; 694 memset(&ipl->iplb, 0, sizeof(IplParameterBlock)); 695 } 696 } 697 698 static void s390_ipl_class_init(ObjectClass *klass, void *data) 699 { 700 DeviceClass *dc = DEVICE_CLASS(klass); 701 702 dc->realize = s390_ipl_realize; 703 device_class_set_props(dc, s390_ipl_properties); 704 dc->reset = s390_ipl_reset; 705 dc->vmsd = &vmstate_ipl; 706 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 707 /* Reason: Loads the ROMs and thus can only be used one time - internally */ 708 dc->user_creatable = false; 709 } 710 711 static const TypeInfo s390_ipl_info = { 712 .class_init = s390_ipl_class_init, 713 .parent = TYPE_DEVICE, 714 .name = TYPE_S390_IPL, 715 .instance_size = sizeof(S390IPLState), 716 }; 717 718 static void s390_ipl_register_types(void) 719 { 720 type_register_static(&s390_ipl_info); 721 } 722 723 type_init(s390_ipl_register_types) 724