1 /* 2 * bootloader support 3 * 4 * Copyright IBM, Corp. 2012, 2020 5 * 6 * Authors: 7 * Christian Borntraeger <borntraeger@de.ibm.com> 8 * Janosch Frank <frankja@linux.ibm.com> 9 * 10 * This work is licensed under the terms of the GNU GPL, version 2 or (at your 11 * option) any later version. See the COPYING file in the top-level directory. 12 * 13 */ 14 15 #include "qemu/osdep.h" 16 #include "qemu-common.h" 17 #include "qemu/datadir.h" 18 #include "qapi/error.h" 19 #include "sysemu/reset.h" 20 #include "sysemu/runstate.h" 21 #include "sysemu/tcg.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 "hw/s390x/pv.h" 31 #include "ipl.h" 32 #include "qemu/error-report.h" 33 #include "qemu/config-file.h" 34 #include "qemu/cutils.h" 35 #include "qemu/option.h" 36 #include "exec/exec-all.h" 37 38 #define KERN_IMAGE_START 0x010000UL 39 #define LINUX_MAGIC_ADDR 0x010008UL 40 #define KERN_PARM_AREA_SIZE_ADDR 0x010430UL 41 #define KERN_PARM_AREA 0x010480UL 42 #define LEGACY_KERN_PARM_AREA_SIZE 0x000380UL 43 #define INITRD_START 0x800000UL 44 #define INITRD_PARM_START 0x010408UL 45 #define PARMFILE_START 0x001000UL 46 #define ZIPL_IMAGE_START 0x009000UL 47 #define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64) 48 49 static bool iplb_extended_needed(void *opaque) 50 { 51 S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL)); 52 53 return ipl->iplbext_migration; 54 } 55 56 static const VMStateDescription vmstate_iplb_extended = { 57 .name = "ipl/iplb_extended", 58 .version_id = 0, 59 .minimum_version_id = 0, 60 .needed = iplb_extended_needed, 61 .fields = (VMStateField[]) { 62 VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200), 63 VMSTATE_END_OF_LIST() 64 } 65 }; 66 67 static const VMStateDescription vmstate_iplb = { 68 .name = "ipl/iplb", 69 .version_id = 0, 70 .minimum_version_id = 0, 71 .fields = (VMStateField[]) { 72 VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110), 73 VMSTATE_UINT16(devno, IplParameterBlock), 74 VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88), 75 VMSTATE_END_OF_LIST() 76 }, 77 .subsections = (const VMStateDescription*[]) { 78 &vmstate_iplb_extended, 79 NULL 80 } 81 }; 82 83 static const VMStateDescription vmstate_ipl = { 84 .name = "ipl", 85 .version_id = 0, 86 .minimum_version_id = 0, 87 .fields = (VMStateField[]) { 88 VMSTATE_UINT64(compat_start_addr, S390IPLState), 89 VMSTATE_UINT64(compat_bios_start_addr, S390IPLState), 90 VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock), 91 VMSTATE_BOOL(iplb_valid, S390IPLState), 92 VMSTATE_UINT8(cssid, S390IPLState), 93 VMSTATE_UINT8(ssid, S390IPLState), 94 VMSTATE_UINT16(devno, S390IPLState), 95 VMSTATE_END_OF_LIST() 96 } 97 }; 98 99 static S390IPLState *get_ipl_device(void) 100 { 101 return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL)); 102 } 103 104 static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr) 105 { 106 uint64_t dstaddr = *(uint64_t *) opaque; 107 /* 108 * Assuming that our s390-ccw.img was linked for starting at address 0, 109 * we can simply add the destination address for the final location 110 */ 111 return srcaddr + dstaddr; 112 } 113 114 static uint64_t get_max_kernel_cmdline_size(void) 115 { 116 uint64_t *size_ptr = rom_ptr(KERN_PARM_AREA_SIZE_ADDR, sizeof(*size_ptr)); 117 118 if (size_ptr) { 119 uint64_t size; 120 121 size = be64_to_cpu(*size_ptr); 122 if (size) { 123 return size; 124 } 125 } 126 return LEGACY_KERN_PARM_AREA_SIZE; 127 } 128 129 static void s390_ipl_realize(DeviceState *dev, Error **errp) 130 { 131 MachineState *ms = MACHINE(qdev_get_machine()); 132 S390IPLState *ipl = S390_IPL(dev); 133 uint32_t *ipl_psw; 134 uint64_t pentry; 135 char *magic; 136 int kernel_size; 137 138 int bios_size; 139 char *bios_filename; 140 141 /* 142 * Always load the bios if it was enforced, 143 * even if an external kernel has been defined. 144 */ 145 if (!ipl->kernel || ipl->enforce_bios) { 146 uint64_t fwbase = (MIN(ms->ram_size, 0x80000000U) - 0x200000) & ~0xffffUL; 147 148 bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->firmware); 149 if (bios_filename == NULL) { 150 error_setg(errp, "could not find stage1 bootloader"); 151 return; 152 } 153 154 bios_size = load_elf(bios_filename, NULL, 155 bios_translate_addr, &fwbase, 156 &ipl->bios_start_addr, NULL, NULL, NULL, 1, 157 EM_S390, 0, 0); 158 if (bios_size > 0) { 159 /* Adjust ELF start address to final location */ 160 ipl->bios_start_addr += fwbase; 161 } else { 162 /* Try to load non-ELF file */ 163 bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, 164 4096); 165 ipl->bios_start_addr = ZIPL_IMAGE_START; 166 } 167 g_free(bios_filename); 168 169 if (bios_size == -1) { 170 error_setg(errp, "could not load bootloader '%s'", ipl->firmware); 171 return; 172 } 173 174 /* default boot target is the bios */ 175 ipl->start_addr = ipl->bios_start_addr; 176 } 177 178 if (ipl->kernel) { 179 kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, 180 &pentry, NULL, 181 NULL, NULL, 1, EM_S390, 0, 0); 182 if (kernel_size < 0) { 183 kernel_size = load_image_targphys(ipl->kernel, 0, ms->ram_size); 184 if (kernel_size < 0) { 185 error_setg(errp, "could not load kernel '%s'", ipl->kernel); 186 return; 187 } 188 /* if this is Linux use KERN_IMAGE_START */ 189 magic = rom_ptr(LINUX_MAGIC_ADDR, 6); 190 if (magic && !memcmp(magic, "S390EP", 6)) { 191 pentry = KERN_IMAGE_START; 192 } else { 193 /* if not Linux load the address of the (short) IPL PSW */ 194 ipl_psw = rom_ptr(4, 4); 195 if (ipl_psw) { 196 pentry = be32_to_cpu(*ipl_psw) & PSW_MASK_SHORT_ADDR; 197 } else { 198 error_setg(errp, "Could not get IPL PSW"); 199 return; 200 } 201 } 202 } 203 /* 204 * Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the 205 * kernel parameters here as well. Note: For old kernels (up to 3.2) 206 * we can not rely on the ELF entry point - it was 0x800 (the SALIPL 207 * loader) and it won't work. For this case we force it to 0x10000, too. 208 */ 209 if (pentry == KERN_IMAGE_START || pentry == 0x800) { 210 size_t cmdline_size = strlen(ipl->cmdline) + 1; 211 char *parm_area = rom_ptr(KERN_PARM_AREA, cmdline_size); 212 213 ipl->start_addr = KERN_IMAGE_START; 214 /* Overwrite parameters in the kernel image, which are "rom" */ 215 if (parm_area) { 216 uint64_t max_cmdline_size = get_max_kernel_cmdline_size(); 217 218 if (cmdline_size > max_cmdline_size) { 219 error_setg(errp, 220 "kernel command line exceeds maximum size:" 221 " %zu > %" PRIu64, 222 cmdline_size, max_cmdline_size); 223 return; 224 } 225 226 strcpy(parm_area, ipl->cmdline); 227 } 228 } else { 229 ipl->start_addr = pentry; 230 } 231 232 if (ipl->initrd) { 233 ram_addr_t initrd_offset; 234 int initrd_size; 235 uint64_t *romptr; 236 237 initrd_offset = INITRD_START; 238 while (kernel_size + 0x100000 > initrd_offset) { 239 initrd_offset += 0x100000; 240 } 241 initrd_size = load_image_targphys(ipl->initrd, initrd_offset, 242 ms->ram_size - initrd_offset); 243 if (initrd_size == -1) { 244 error_setg(errp, "could not load initrd '%s'", ipl->initrd); 245 return; 246 } 247 248 /* 249 * we have to overwrite values in the kernel image, 250 * which are "rom" 251 */ 252 romptr = rom_ptr(INITRD_PARM_START, 16); 253 if (romptr) { 254 stq_p(romptr, initrd_offset); 255 stq_p(romptr + 1, initrd_size); 256 } 257 } 258 } 259 /* 260 * Don't ever use the migrated values, they could come from a different 261 * BIOS and therefore don't work. But still migrate the values, so 262 * QEMUs relying on it don't break. 263 */ 264 ipl->compat_start_addr = ipl->start_addr; 265 ipl->compat_bios_start_addr = ipl->bios_start_addr; 266 /* 267 * Because this Device is not on any bus in the qbus tree (it is 268 * not a sysbus device and it's not on some other bus like a PCI 269 * bus) it will not be automatically reset by the 'reset the 270 * sysbus' hook registered by vl.c like most devices. So we must 271 * manually register a reset hook for it. 272 * TODO: there should be a better way to do this. 273 */ 274 qemu_register_reset(resettable_cold_reset_fn, dev); 275 } 276 277 static Property s390_ipl_properties[] = { 278 DEFINE_PROP_STRING("kernel", S390IPLState, kernel), 279 DEFINE_PROP_STRING("initrd", S390IPLState, initrd), 280 DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline), 281 DEFINE_PROP_STRING("firmware", S390IPLState, firmware), 282 DEFINE_PROP_STRING("netboot_fw", S390IPLState, netboot_fw), 283 DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false), 284 DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration, 285 true), 286 DEFINE_PROP_END_OF_LIST(), 287 }; 288 289 static void s390_ipl_set_boot_menu(S390IPLState *ipl) 290 { 291 QemuOptsList *plist = qemu_find_opts("boot-opts"); 292 QemuOpts *opts = QTAILQ_FIRST(&plist->head); 293 const char *tmp; 294 unsigned long splash_time = 0; 295 296 if (!get_boot_device(0)) { 297 if (boot_menu) { 298 error_report("boot menu requires a bootindex to be specified for " 299 "the IPL device"); 300 } 301 return; 302 } 303 304 switch (ipl->iplb.pbt) { 305 case S390_IPL_TYPE_CCW: 306 /* In the absence of -boot menu, use zipl parameters */ 307 if (!qemu_opt_get(opts, "menu")) { 308 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL; 309 return; 310 } 311 break; 312 case S390_IPL_TYPE_QEMU_SCSI: 313 break; 314 default: 315 if (boot_menu) { 316 error_report("boot menu is not supported for this device type"); 317 } 318 return; 319 } 320 321 if (!boot_menu) { 322 return; 323 } 324 325 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD; 326 327 tmp = qemu_opt_get(opts, "splash-time"); 328 329 if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) { 330 error_report("splash-time is invalid, forcing it to 0"); 331 ipl->qipl.boot_menu_timeout = 0; 332 return; 333 } 334 335 if (splash_time > 0xffffffff) { 336 error_report("splash-time is too large, forcing it to max value"); 337 ipl->qipl.boot_menu_timeout = 0xffffffff; 338 return; 339 } 340 341 ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time); 342 } 343 344 #define CCW_DEVTYPE_NONE 0x00 345 #define CCW_DEVTYPE_VIRTIO 0x01 346 #define CCW_DEVTYPE_VIRTIO_NET 0x02 347 #define CCW_DEVTYPE_SCSI 0x03 348 #define CCW_DEVTYPE_VFIO 0x04 349 350 static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype) 351 { 352 CcwDevice *ccw_dev = NULL; 353 int tmp_dt = CCW_DEVTYPE_NONE; 354 355 if (dev_st) { 356 VirtIONet *virtio_net_dev = (VirtIONet *) 357 object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET); 358 VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) 359 object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), 360 TYPE_VIRTIO_CCW_DEVICE); 361 VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *) 362 object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW); 363 364 if (virtio_ccw_dev) { 365 ccw_dev = CCW_DEVICE(virtio_ccw_dev); 366 if (virtio_net_dev) { 367 tmp_dt = CCW_DEVTYPE_VIRTIO_NET; 368 } else { 369 tmp_dt = CCW_DEVTYPE_VIRTIO; 370 } 371 } else if (vfio_ccw_dev) { 372 ccw_dev = CCW_DEVICE(vfio_ccw_dev); 373 tmp_dt = CCW_DEVTYPE_VFIO; 374 } else { 375 SCSIDevice *sd = (SCSIDevice *) 376 object_dynamic_cast(OBJECT(dev_st), 377 TYPE_SCSI_DEVICE); 378 if (sd) { 379 SCSIBus *bus = scsi_bus_from_device(sd); 380 VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus); 381 VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, 382 vdev); 383 384 ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw), 385 TYPE_CCW_DEVICE); 386 tmp_dt = CCW_DEVTYPE_SCSI; 387 } 388 } 389 } 390 if (devtype) { 391 *devtype = tmp_dt; 392 } 393 return ccw_dev; 394 } 395 396 static bool s390_gen_initial_iplb(S390IPLState *ipl) 397 { 398 DeviceState *dev_st; 399 CcwDevice *ccw_dev = NULL; 400 SCSIDevice *sd; 401 int devtype; 402 403 dev_st = get_boot_device(0); 404 if (dev_st) { 405 ccw_dev = s390_get_ccw_device(dev_st, &devtype); 406 } 407 408 /* 409 * Currently allow IPL only from CCW devices. 410 */ 411 if (ccw_dev) { 412 switch (devtype) { 413 case CCW_DEVTYPE_SCSI: 414 sd = SCSI_DEVICE(dev_st); 415 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); 416 ipl->iplb.blk0_len = 417 cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN); 418 ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI; 419 ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); 420 ipl->iplb.scsi.target = cpu_to_be16(sd->id); 421 ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); 422 ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); 423 ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; 424 break; 425 case CCW_DEVTYPE_VFIO: 426 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 427 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 428 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 429 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 430 break; 431 case CCW_DEVTYPE_VIRTIO_NET: 432 ipl->netboot = true; 433 /* Fall through to CCW_DEVTYPE_VIRTIO case */ 434 case CCW_DEVTYPE_VIRTIO: 435 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 436 ipl->iplb.blk0_len = 437 cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); 438 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 439 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 440 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 441 break; 442 } 443 444 if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) { 445 ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID; 446 } 447 448 return true; 449 } 450 451 return false; 452 } 453 454 int s390_ipl_set_loadparm(uint8_t *loadparm) 455 { 456 MachineState *machine = MACHINE(qdev_get_machine()); 457 char *lp = object_property_get_str(OBJECT(machine), "loadparm", NULL); 458 459 if (lp) { 460 int i; 461 462 /* lp is an uppercase string without leading/embedded spaces */ 463 for (i = 0; i < 8 && lp[i]; i++) { 464 loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]]; 465 } 466 467 if (i < 8) { 468 memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */ 469 } 470 471 g_free(lp); 472 return 0; 473 } 474 475 return -1; 476 } 477 478 static int load_netboot_image(Error **errp) 479 { 480 MachineState *ms = MACHINE(qdev_get_machine()); 481 S390IPLState *ipl = get_ipl_device(); 482 char *netboot_filename; 483 MemoryRegion *sysmem = get_system_memory(); 484 MemoryRegion *mr = NULL; 485 void *ram_ptr = NULL; 486 int img_size = -1; 487 488 mr = memory_region_find(sysmem, 0, 1).mr; 489 if (!mr) { 490 error_setg(errp, "Failed to find memory region at address 0"); 491 return -1; 492 } 493 494 ram_ptr = memory_region_get_ram_ptr(mr); 495 if (!ram_ptr) { 496 error_setg(errp, "No RAM found"); 497 goto unref_mr; 498 } 499 500 netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw); 501 if (netboot_filename == NULL) { 502 error_setg(errp, "Could not find network bootloader '%s'", 503 ipl->netboot_fw); 504 goto unref_mr; 505 } 506 507 img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL, 508 &ipl->start_addr, 509 NULL, NULL, NULL, 1, EM_S390, 0, 0, NULL, 510 false); 511 512 if (img_size < 0) { 513 img_size = load_image_size(netboot_filename, ram_ptr, ms->ram_size); 514 ipl->start_addr = KERN_IMAGE_START; 515 } 516 517 if (img_size < 0) { 518 error_setg(errp, "Failed to load network bootloader"); 519 } 520 521 g_free(netboot_filename); 522 523 unref_mr: 524 memory_region_unref(mr); 525 return img_size; 526 } 527 528 static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb, 529 int virtio_id) 530 { 531 uint8_t cssid; 532 uint8_t ssid; 533 uint16_t devno; 534 uint16_t schid; 535 SubchDev *sch = NULL; 536 537 if (iplb->pbt != S390_IPL_TYPE_CCW) { 538 return false; 539 } 540 541 devno = be16_to_cpu(iplb->ccw.devno); 542 ssid = iplb->ccw.ssid & 3; 543 544 for (schid = 0; schid < MAX_SCHID; schid++) { 545 for (cssid = 0; cssid < MAX_CSSID; cssid++) { 546 sch = css_find_subch(1, cssid, ssid, schid); 547 548 if (sch && sch->devno == devno) { 549 return sch->id.cu_model == virtio_id; 550 } 551 } 552 } 553 return false; 554 } 555 556 static bool is_virtio_net_device(IplParameterBlock *iplb) 557 { 558 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET); 559 } 560 561 static bool is_virtio_scsi_device(IplParameterBlock *iplb) 562 { 563 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); 564 } 565 566 static void update_machine_ipl_properties(IplParameterBlock *iplb) 567 { 568 Object *machine = qdev_get_machine(); 569 Error *err = NULL; 570 571 /* Sync loadparm */ 572 if (iplb->flags & DIAG308_FLAGS_LP_VALID) { 573 uint8_t *ebcdic_loadparm = iplb->loadparm; 574 char ascii_loadparm[9]; 575 int i; 576 577 for (i = 0; i < 8 && ebcdic_loadparm[i]; i++) { 578 ascii_loadparm[i] = ebcdic2ascii[(uint8_t) ebcdic_loadparm[i]]; 579 } 580 ascii_loadparm[i] = 0; 581 object_property_set_str(machine, "loadparm", ascii_loadparm, &err); 582 } else { 583 object_property_set_str(machine, "loadparm", "", &err); 584 } 585 if (err) { 586 warn_report_err(err); 587 } 588 } 589 590 void s390_ipl_update_diag308(IplParameterBlock *iplb) 591 { 592 S390IPLState *ipl = get_ipl_device(); 593 594 /* 595 * The IPLB set and retrieved by subcodes 8/9 is completely 596 * separate from the one managed via subcodes 5/6. 597 */ 598 if (iplb->pbt == S390_IPL_TYPE_PV) { 599 ipl->iplb_pv = *iplb; 600 ipl->iplb_valid_pv = true; 601 } else { 602 ipl->iplb = *iplb; 603 ipl->iplb_valid = true; 604 } 605 ipl->netboot = is_virtio_net_device(iplb); 606 update_machine_ipl_properties(iplb); 607 } 608 609 IplParameterBlock *s390_ipl_get_iplb_pv(void) 610 { 611 S390IPLState *ipl = get_ipl_device(); 612 613 if (!ipl->iplb_valid_pv) { 614 return NULL; 615 } 616 return &ipl->iplb_pv; 617 } 618 619 IplParameterBlock *s390_ipl_get_iplb(void) 620 { 621 S390IPLState *ipl = get_ipl_device(); 622 623 if (!ipl->iplb_valid) { 624 return NULL; 625 } 626 return &ipl->iplb; 627 } 628 629 void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) 630 { 631 S390IPLState *ipl = get_ipl_device(); 632 633 if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { 634 /* use CPU 0 for full resets */ 635 ipl->reset_cpu_index = 0; 636 } else { 637 ipl->reset_cpu_index = cs->cpu_index; 638 } 639 ipl->reset_type = reset_type; 640 641 if (reset_type == S390_RESET_REIPL && 642 ipl->iplb_valid && 643 !ipl->netboot && 644 ipl->iplb.pbt == S390_IPL_TYPE_CCW && 645 is_virtio_scsi_device(&ipl->iplb)) { 646 CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0), NULL); 647 648 if (ccw_dev && 649 cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno && 650 (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) { 651 /* 652 * this is the original boot device's SCSI 653 * so restore IPL parameter info from it 654 */ 655 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 656 } 657 } 658 if (reset_type == S390_RESET_MODIFIED_CLEAR || 659 reset_type == S390_RESET_LOAD_NORMAL || 660 reset_type == S390_RESET_PV) { 661 /* ignore -no-reboot, send no event */ 662 qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); 663 } else { 664 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 665 } 666 /* as this is triggered by a CPU, make sure to exit the loop */ 667 if (tcg_enabled()) { 668 cpu_loop_exit(cs); 669 } 670 } 671 672 void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type) 673 { 674 S390IPLState *ipl = get_ipl_device(); 675 676 *cs = qemu_get_cpu(ipl->reset_cpu_index); 677 if (!*cs) { 678 /* use any CPU */ 679 *cs = first_cpu; 680 } 681 *reset_type = ipl->reset_type; 682 } 683 684 void s390_ipl_clear_reset_request(void) 685 { 686 S390IPLState *ipl = get_ipl_device(); 687 688 ipl->reset_type = S390_RESET_EXTERNAL; 689 /* use CPU 0 for full resets */ 690 ipl->reset_cpu_index = 0; 691 } 692 693 static void s390_ipl_prepare_qipl(S390CPU *cpu) 694 { 695 S390IPLState *ipl = get_ipl_device(); 696 uint8_t *addr; 697 uint64_t len = 4096; 698 699 addr = cpu_physical_memory_map(cpu->env.psa, &len, true); 700 if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) { 701 error_report("Cannot set QEMU IPL parameters"); 702 return; 703 } 704 memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters)); 705 cpu_physical_memory_unmap(addr, len, 1, len); 706 } 707 708 int s390_ipl_prepare_pv_header(void) 709 { 710 IplParameterBlock *ipib = s390_ipl_get_iplb_pv(); 711 IPLBlockPV *ipib_pv = &ipib->pv; 712 void *hdr = g_malloc(ipib_pv->pv_header_len); 713 int rc; 714 715 cpu_physical_memory_read(ipib_pv->pv_header_addr, hdr, 716 ipib_pv->pv_header_len); 717 rc = s390_pv_set_sec_parms((uintptr_t)hdr, 718 ipib_pv->pv_header_len); 719 g_free(hdr); 720 return rc; 721 } 722 723 int s390_ipl_pv_unpack(void) 724 { 725 IplParameterBlock *ipib = s390_ipl_get_iplb_pv(); 726 IPLBlockPV *ipib_pv = &ipib->pv; 727 int i, rc = 0; 728 729 for (i = 0; i < ipib_pv->num_comp; i++) { 730 rc = s390_pv_unpack(ipib_pv->components[i].addr, 731 TARGET_PAGE_ALIGN(ipib_pv->components[i].size), 732 ipib_pv->components[i].tweak_pref); 733 if (rc) { 734 break; 735 } 736 } 737 return rc; 738 } 739 740 void s390_ipl_prepare_cpu(S390CPU *cpu) 741 { 742 S390IPLState *ipl = get_ipl_device(); 743 744 cpu->env.psw.addr = ipl->start_addr; 745 cpu->env.psw.mask = IPL_PSW_MASK; 746 747 if (!ipl->kernel || ipl->iplb_valid) { 748 cpu->env.psw.addr = ipl->bios_start_addr; 749 if (!ipl->iplb_valid) { 750 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 751 } 752 } 753 if (ipl->netboot) { 754 load_netboot_image(&error_fatal); 755 ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); 756 } 757 s390_ipl_set_boot_menu(ipl); 758 s390_ipl_prepare_qipl(cpu); 759 } 760 761 static void s390_ipl_reset(DeviceState *dev) 762 { 763 S390IPLState *ipl = S390_IPL(dev); 764 765 if (ipl->reset_type != S390_RESET_REIPL) { 766 ipl->iplb_valid = false; 767 memset(&ipl->iplb, 0, sizeof(IplParameterBlock)); 768 } 769 } 770 771 static void s390_ipl_class_init(ObjectClass *klass, void *data) 772 { 773 DeviceClass *dc = DEVICE_CLASS(klass); 774 775 dc->realize = s390_ipl_realize; 776 device_class_set_props(dc, s390_ipl_properties); 777 dc->reset = s390_ipl_reset; 778 dc->vmsd = &vmstate_ipl; 779 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 780 /* Reason: Loads the ROMs and thus can only be used one time - internally */ 781 dc->user_creatable = false; 782 } 783 784 static const TypeInfo s390_ipl_info = { 785 .class_init = s390_ipl_class_init, 786 .parent = TYPE_DEVICE, 787 .name = TYPE_S390_IPL, 788 .instance_size = sizeof(S390IPLState), 789 }; 790 791 static void s390_ipl_register_types(void) 792 { 793 type_register_static(&s390_ipl_info); 794 } 795 796 type_init(s390_ipl_register_types) 797