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