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/sysemu.h" 22 #include "sysemu/tcg.h" 23 #include "cpu.h" 24 #include "elf.h" 25 #include "hw/loader.h" 26 #include "hw/qdev-properties.h" 27 #include "hw/boards.h" 28 #include "hw/s390x/virtio-ccw.h" 29 #include "hw/s390x/vfio-ccw.h" 30 #include "hw/s390x/css.h" 31 #include "hw/s390x/ebcdic.h" 32 #include "hw/s390x/pv.h" 33 #include "ipl.h" 34 #include "qemu/error-report.h" 35 #include "qemu/config-file.h" 36 #include "qemu/cutils.h" 37 #include "qemu/option.h" 38 #include "exec/exec-all.h" 39 40 #define KERN_IMAGE_START 0x010000UL 41 #define LINUX_MAGIC_ADDR 0x010008UL 42 #define KERN_PARM_AREA 0x010480UL 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 void s390_ipl_realize(DeviceState *dev, Error **errp) 115 { 116 MachineState *ms = MACHINE(qdev_get_machine()); 117 S390IPLState *ipl = S390_IPL(dev); 118 uint32_t *ipl_psw; 119 uint64_t pentry; 120 char *magic; 121 int kernel_size; 122 123 int bios_size; 124 char *bios_filename; 125 126 /* 127 * Always load the bios if it was enforced, 128 * even if an external kernel has been defined. 129 */ 130 if (!ipl->kernel || ipl->enforce_bios) { 131 uint64_t fwbase = (MIN(ms->ram_size, 0x80000000U) - 0x200000) & ~0xffffUL; 132 133 bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->firmware); 134 if (bios_filename == NULL) { 135 error_setg(errp, "could not find stage1 bootloader"); 136 return; 137 } 138 139 bios_size = load_elf(bios_filename, NULL, 140 bios_translate_addr, &fwbase, 141 &ipl->bios_start_addr, NULL, NULL, NULL, 1, 142 EM_S390, 0, 0); 143 if (bios_size > 0) { 144 /* Adjust ELF start address to final location */ 145 ipl->bios_start_addr += fwbase; 146 } else { 147 /* Try to load non-ELF file */ 148 bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, 149 4096); 150 ipl->bios_start_addr = ZIPL_IMAGE_START; 151 } 152 g_free(bios_filename); 153 154 if (bios_size == -1) { 155 error_setg(errp, "could not load bootloader '%s'", ipl->firmware); 156 return; 157 } 158 159 /* default boot target is the bios */ 160 ipl->start_addr = ipl->bios_start_addr; 161 } 162 163 if (ipl->kernel) { 164 kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, 165 &pentry, NULL, 166 NULL, NULL, 1, EM_S390, 0, 0); 167 if (kernel_size < 0) { 168 kernel_size = load_image_targphys(ipl->kernel, 0, ms->ram_size); 169 if (kernel_size < 0) { 170 error_setg(errp, "could not load kernel '%s'", ipl->kernel); 171 return; 172 } 173 /* if this is Linux use KERN_IMAGE_START */ 174 magic = rom_ptr(LINUX_MAGIC_ADDR, 6); 175 if (magic && !memcmp(magic, "S390EP", 6)) { 176 pentry = KERN_IMAGE_START; 177 } else { 178 /* if not Linux load the address of the (short) IPL PSW */ 179 ipl_psw = rom_ptr(4, 4); 180 if (ipl_psw) { 181 pentry = be32_to_cpu(*ipl_psw) & PSW_MASK_SHORT_ADDR; 182 } else { 183 error_setg(errp, "Could not get IPL PSW"); 184 return; 185 } 186 } 187 } 188 /* 189 * Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the 190 * kernel parameters here as well. Note: For old kernels (up to 3.2) 191 * we can not rely on the ELF entry point - it was 0x800 (the SALIPL 192 * loader) and it won't work. For this case we force it to 0x10000, too. 193 */ 194 if (pentry == KERN_IMAGE_START || pentry == 0x800) { 195 char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1); 196 ipl->start_addr = KERN_IMAGE_START; 197 /* Overwrite parameters in the kernel image, which are "rom" */ 198 if (parm_area) { 199 strcpy(parm_area, ipl->cmdline); 200 } 201 } else { 202 ipl->start_addr = pentry; 203 } 204 205 if (ipl->initrd) { 206 ram_addr_t initrd_offset; 207 int initrd_size; 208 uint64_t *romptr; 209 210 initrd_offset = INITRD_START; 211 while (kernel_size + 0x100000 > initrd_offset) { 212 initrd_offset += 0x100000; 213 } 214 initrd_size = load_image_targphys(ipl->initrd, initrd_offset, 215 ms->ram_size - initrd_offset); 216 if (initrd_size == -1) { 217 error_setg(errp, "could not load initrd '%s'", ipl->initrd); 218 return; 219 } 220 221 /* 222 * we have to overwrite values in the kernel image, 223 * which are "rom" 224 */ 225 romptr = rom_ptr(INITRD_PARM_START, 16); 226 if (romptr) { 227 stq_p(romptr, initrd_offset); 228 stq_p(romptr + 1, initrd_size); 229 } 230 } 231 } 232 /* 233 * Don't ever use the migrated values, they could come from a different 234 * BIOS and therefore don't work. But still migrate the values, so 235 * QEMUs relying on it don't break. 236 */ 237 ipl->compat_start_addr = ipl->start_addr; 238 ipl->compat_bios_start_addr = ipl->bios_start_addr; 239 /* 240 * Because this Device is not on any bus in the qbus tree (it is 241 * not a sysbus device and it's not on some other bus like a PCI 242 * bus) it will not be automatically reset by the 'reset the 243 * sysbus' hook registered by vl.c like most devices. So we must 244 * manually register a reset hook for it. 245 * TODO: there should be a better way to do this. 246 */ 247 qemu_register_reset(resettable_cold_reset_fn, dev); 248 } 249 250 static Property s390_ipl_properties[] = { 251 DEFINE_PROP_STRING("kernel", S390IPLState, kernel), 252 DEFINE_PROP_STRING("initrd", S390IPLState, initrd), 253 DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline), 254 DEFINE_PROP_STRING("firmware", S390IPLState, firmware), 255 DEFINE_PROP_STRING("netboot_fw", S390IPLState, netboot_fw), 256 DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false), 257 DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration, 258 true), 259 DEFINE_PROP_END_OF_LIST(), 260 }; 261 262 static void s390_ipl_set_boot_menu(S390IPLState *ipl) 263 { 264 QemuOptsList *plist = qemu_find_opts("boot-opts"); 265 QemuOpts *opts = QTAILQ_FIRST(&plist->head); 266 const char *tmp; 267 unsigned long splash_time = 0; 268 269 if (!get_boot_device(0)) { 270 if (boot_menu) { 271 error_report("boot menu requires a bootindex to be specified for " 272 "the IPL device"); 273 } 274 return; 275 } 276 277 switch (ipl->iplb.pbt) { 278 case S390_IPL_TYPE_CCW: 279 /* In the absence of -boot menu, use zipl parameters */ 280 if (!qemu_opt_get(opts, "menu")) { 281 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL; 282 return; 283 } 284 break; 285 case S390_IPL_TYPE_QEMU_SCSI: 286 break; 287 default: 288 if (boot_menu) { 289 error_report("boot menu is not supported for this device type"); 290 } 291 return; 292 } 293 294 if (!boot_menu) { 295 return; 296 } 297 298 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD; 299 300 tmp = qemu_opt_get(opts, "splash-time"); 301 302 if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) { 303 error_report("splash-time is invalid, forcing it to 0"); 304 ipl->qipl.boot_menu_timeout = 0; 305 return; 306 } 307 308 if (splash_time > 0xffffffff) { 309 error_report("splash-time is too large, forcing it to max value"); 310 ipl->qipl.boot_menu_timeout = 0xffffffff; 311 return; 312 } 313 314 ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time); 315 } 316 317 #define CCW_DEVTYPE_NONE 0x00 318 #define CCW_DEVTYPE_VIRTIO 0x01 319 #define CCW_DEVTYPE_VIRTIO_NET 0x02 320 #define CCW_DEVTYPE_SCSI 0x03 321 #define CCW_DEVTYPE_VFIO 0x04 322 323 static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype) 324 { 325 CcwDevice *ccw_dev = NULL; 326 int tmp_dt = CCW_DEVTYPE_NONE; 327 328 if (dev_st) { 329 VirtIONet *virtio_net_dev = (VirtIONet *) 330 object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET); 331 VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) 332 object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), 333 TYPE_VIRTIO_CCW_DEVICE); 334 VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *) 335 object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW); 336 337 if (virtio_ccw_dev) { 338 ccw_dev = CCW_DEVICE(virtio_ccw_dev); 339 if (virtio_net_dev) { 340 tmp_dt = CCW_DEVTYPE_VIRTIO_NET; 341 } else { 342 tmp_dt = CCW_DEVTYPE_VIRTIO; 343 } 344 } else if (vfio_ccw_dev) { 345 ccw_dev = CCW_DEVICE(vfio_ccw_dev); 346 tmp_dt = CCW_DEVTYPE_VFIO; 347 } else { 348 SCSIDevice *sd = (SCSIDevice *) 349 object_dynamic_cast(OBJECT(dev_st), 350 TYPE_SCSI_DEVICE); 351 if (sd) { 352 SCSIBus *bus = scsi_bus_from_device(sd); 353 VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus); 354 VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, 355 vdev); 356 357 ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw), 358 TYPE_CCW_DEVICE); 359 tmp_dt = CCW_DEVTYPE_SCSI; 360 } 361 } 362 } 363 if (devtype) { 364 *devtype = tmp_dt; 365 } 366 return ccw_dev; 367 } 368 369 static bool s390_gen_initial_iplb(S390IPLState *ipl) 370 { 371 DeviceState *dev_st; 372 CcwDevice *ccw_dev = NULL; 373 SCSIDevice *sd; 374 int devtype; 375 376 dev_st = get_boot_device(0); 377 if (dev_st) { 378 ccw_dev = s390_get_ccw_device(dev_st, &devtype); 379 } 380 381 /* 382 * Currently allow IPL only from CCW devices. 383 */ 384 if (ccw_dev) { 385 switch (devtype) { 386 case CCW_DEVTYPE_SCSI: 387 sd = SCSI_DEVICE(dev_st); 388 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); 389 ipl->iplb.blk0_len = 390 cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN); 391 ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI; 392 ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); 393 ipl->iplb.scsi.target = cpu_to_be16(sd->id); 394 ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); 395 ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); 396 ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; 397 break; 398 case CCW_DEVTYPE_VFIO: 399 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 400 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 401 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 402 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 403 break; 404 case CCW_DEVTYPE_VIRTIO_NET: 405 ipl->netboot = true; 406 /* Fall through to CCW_DEVTYPE_VIRTIO case */ 407 case CCW_DEVTYPE_VIRTIO: 408 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 409 ipl->iplb.blk0_len = 410 cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); 411 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 412 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 413 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 414 break; 415 } 416 417 if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) { 418 ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID; 419 } 420 421 return true; 422 } 423 424 return false; 425 } 426 427 int s390_ipl_set_loadparm(uint8_t *loadparm) 428 { 429 MachineState *machine = MACHINE(qdev_get_machine()); 430 char *lp = object_property_get_str(OBJECT(machine), "loadparm", NULL); 431 432 if (lp) { 433 int i; 434 435 /* lp is an uppercase string without leading/embedded spaces */ 436 for (i = 0; i < 8 && lp[i]; i++) { 437 loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]]; 438 } 439 440 if (i < 8) { 441 memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */ 442 } 443 444 g_free(lp); 445 return 0; 446 } 447 448 return -1; 449 } 450 451 static int load_netboot_image(Error **errp) 452 { 453 MachineState *ms = MACHINE(qdev_get_machine()); 454 S390IPLState *ipl = get_ipl_device(); 455 char *netboot_filename; 456 MemoryRegion *sysmem = get_system_memory(); 457 MemoryRegion *mr = NULL; 458 void *ram_ptr = NULL; 459 int img_size = -1; 460 461 mr = memory_region_find(sysmem, 0, 1).mr; 462 if (!mr) { 463 error_setg(errp, "Failed to find memory region at address 0"); 464 return -1; 465 } 466 467 ram_ptr = memory_region_get_ram_ptr(mr); 468 if (!ram_ptr) { 469 error_setg(errp, "No RAM found"); 470 goto unref_mr; 471 } 472 473 netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw); 474 if (netboot_filename == NULL) { 475 error_setg(errp, "Could not find network bootloader '%s'", 476 ipl->netboot_fw); 477 goto unref_mr; 478 } 479 480 img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL, 481 &ipl->start_addr, 482 NULL, NULL, NULL, 1, EM_S390, 0, 0, NULL, 483 false); 484 485 if (img_size < 0) { 486 img_size = load_image_size(netboot_filename, ram_ptr, ms->ram_size); 487 ipl->start_addr = KERN_IMAGE_START; 488 } 489 490 if (img_size < 0) { 491 error_setg(errp, "Failed to load network bootloader"); 492 } 493 494 g_free(netboot_filename); 495 496 unref_mr: 497 memory_region_unref(mr); 498 return img_size; 499 } 500 501 static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb, 502 int virtio_id) 503 { 504 uint8_t cssid; 505 uint8_t ssid; 506 uint16_t devno; 507 uint16_t schid; 508 SubchDev *sch = NULL; 509 510 if (iplb->pbt != S390_IPL_TYPE_CCW) { 511 return false; 512 } 513 514 devno = be16_to_cpu(iplb->ccw.devno); 515 ssid = iplb->ccw.ssid & 3; 516 517 for (schid = 0; schid < MAX_SCHID; schid++) { 518 for (cssid = 0; cssid < MAX_CSSID; cssid++) { 519 sch = css_find_subch(1, cssid, ssid, schid); 520 521 if (sch && sch->devno == devno) { 522 return sch->id.cu_model == virtio_id; 523 } 524 } 525 } 526 return false; 527 } 528 529 static bool is_virtio_net_device(IplParameterBlock *iplb) 530 { 531 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET); 532 } 533 534 static bool is_virtio_scsi_device(IplParameterBlock *iplb) 535 { 536 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); 537 } 538 539 static void update_machine_ipl_properties(IplParameterBlock *iplb) 540 { 541 Object *machine = qdev_get_machine(); 542 Error *err = NULL; 543 544 /* Sync loadparm */ 545 if (iplb->flags & DIAG308_FLAGS_LP_VALID) { 546 uint8_t *ebcdic_loadparm = iplb->loadparm; 547 char ascii_loadparm[9]; 548 int i; 549 550 for (i = 0; i < 8 && ebcdic_loadparm[i]; i++) { 551 ascii_loadparm[i] = ebcdic2ascii[(uint8_t) ebcdic_loadparm[i]]; 552 } 553 ascii_loadparm[i] = 0; 554 object_property_set_str(machine, "loadparm", ascii_loadparm, &err); 555 } else { 556 object_property_set_str(machine, "loadparm", "", &err); 557 } 558 if (err) { 559 warn_report_err(err); 560 } 561 } 562 563 void s390_ipl_update_diag308(IplParameterBlock *iplb) 564 { 565 S390IPLState *ipl = get_ipl_device(); 566 567 /* 568 * The IPLB set and retrieved by subcodes 8/9 is completely 569 * separate from the one managed via subcodes 5/6. 570 */ 571 if (iplb->pbt == S390_IPL_TYPE_PV) { 572 ipl->iplb_pv = *iplb; 573 ipl->iplb_valid_pv = true; 574 } else { 575 ipl->iplb = *iplb; 576 ipl->iplb_valid = true; 577 } 578 ipl->netboot = is_virtio_net_device(iplb); 579 update_machine_ipl_properties(iplb); 580 } 581 582 IplParameterBlock *s390_ipl_get_iplb_pv(void) 583 { 584 S390IPLState *ipl = get_ipl_device(); 585 586 if (!ipl->iplb_valid_pv) { 587 return NULL; 588 } 589 return &ipl->iplb_pv; 590 } 591 592 IplParameterBlock *s390_ipl_get_iplb(void) 593 { 594 S390IPLState *ipl = get_ipl_device(); 595 596 if (!ipl->iplb_valid) { 597 return NULL; 598 } 599 return &ipl->iplb; 600 } 601 602 void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) 603 { 604 S390IPLState *ipl = get_ipl_device(); 605 606 if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { 607 /* use CPU 0 for full resets */ 608 ipl->reset_cpu_index = 0; 609 } else { 610 ipl->reset_cpu_index = cs->cpu_index; 611 } 612 ipl->reset_type = reset_type; 613 614 if (reset_type == S390_RESET_REIPL && 615 ipl->iplb_valid && 616 !ipl->netboot && 617 ipl->iplb.pbt == S390_IPL_TYPE_CCW && 618 is_virtio_scsi_device(&ipl->iplb)) { 619 CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0), NULL); 620 621 if (ccw_dev && 622 cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno && 623 (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) { 624 /* 625 * this is the original boot device's SCSI 626 * so restore IPL parameter info from it 627 */ 628 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 629 } 630 } 631 if (reset_type == S390_RESET_MODIFIED_CLEAR || 632 reset_type == S390_RESET_LOAD_NORMAL || 633 reset_type == S390_RESET_PV) { 634 /* ignore -no-reboot, send no event */ 635 qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); 636 } else { 637 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 638 } 639 /* as this is triggered by a CPU, make sure to exit the loop */ 640 if (tcg_enabled()) { 641 cpu_loop_exit(cs); 642 } 643 } 644 645 void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type) 646 { 647 S390IPLState *ipl = get_ipl_device(); 648 649 *cs = qemu_get_cpu(ipl->reset_cpu_index); 650 if (!*cs) { 651 /* use any CPU */ 652 *cs = first_cpu; 653 } 654 *reset_type = ipl->reset_type; 655 } 656 657 void s390_ipl_clear_reset_request(void) 658 { 659 S390IPLState *ipl = get_ipl_device(); 660 661 ipl->reset_type = S390_RESET_EXTERNAL; 662 /* use CPU 0 for full resets */ 663 ipl->reset_cpu_index = 0; 664 } 665 666 static void s390_ipl_prepare_qipl(S390CPU *cpu) 667 { 668 S390IPLState *ipl = get_ipl_device(); 669 uint8_t *addr; 670 uint64_t len = 4096; 671 672 addr = cpu_physical_memory_map(cpu->env.psa, &len, true); 673 if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) { 674 error_report("Cannot set QEMU IPL parameters"); 675 return; 676 } 677 memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters)); 678 cpu_physical_memory_unmap(addr, len, 1, len); 679 } 680 681 int s390_ipl_prepare_pv_header(void) 682 { 683 IplParameterBlock *ipib = s390_ipl_get_iplb_pv(); 684 IPLBlockPV *ipib_pv = &ipib->pv; 685 void *hdr = g_malloc(ipib_pv->pv_header_len); 686 int rc; 687 688 cpu_physical_memory_read(ipib_pv->pv_header_addr, hdr, 689 ipib_pv->pv_header_len); 690 rc = s390_pv_set_sec_parms((uintptr_t)hdr, 691 ipib_pv->pv_header_len); 692 g_free(hdr); 693 return rc; 694 } 695 696 int s390_ipl_pv_unpack(void) 697 { 698 IplParameterBlock *ipib = s390_ipl_get_iplb_pv(); 699 IPLBlockPV *ipib_pv = &ipib->pv; 700 int i, rc = 0; 701 702 for (i = 0; i < ipib_pv->num_comp; i++) { 703 rc = s390_pv_unpack(ipib_pv->components[i].addr, 704 TARGET_PAGE_ALIGN(ipib_pv->components[i].size), 705 ipib_pv->components[i].tweak_pref); 706 if (rc) { 707 break; 708 } 709 } 710 return rc; 711 } 712 713 void s390_ipl_prepare_cpu(S390CPU *cpu) 714 { 715 S390IPLState *ipl = get_ipl_device(); 716 Error *err = NULL; 717 718 cpu->env.psw.addr = ipl->start_addr; 719 cpu->env.psw.mask = IPL_PSW_MASK; 720 721 if (!ipl->kernel || ipl->iplb_valid) { 722 cpu->env.psw.addr = ipl->bios_start_addr; 723 if (!ipl->iplb_valid) { 724 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 725 } 726 } 727 if (ipl->netboot) { 728 if (load_netboot_image(&err) < 0) { 729 error_report_err(err); 730 exit(1); 731 } 732 ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); 733 } 734 s390_ipl_set_boot_menu(ipl); 735 s390_ipl_prepare_qipl(cpu); 736 } 737 738 static void s390_ipl_reset(DeviceState *dev) 739 { 740 S390IPLState *ipl = S390_IPL(dev); 741 742 if (ipl->reset_type != S390_RESET_REIPL) { 743 ipl->iplb_valid = false; 744 memset(&ipl->iplb, 0, sizeof(IplParameterBlock)); 745 } 746 } 747 748 static void s390_ipl_class_init(ObjectClass *klass, void *data) 749 { 750 DeviceClass *dc = DEVICE_CLASS(klass); 751 752 dc->realize = s390_ipl_realize; 753 device_class_set_props(dc, s390_ipl_properties); 754 dc->reset = s390_ipl_reset; 755 dc->vmsd = &vmstate_ipl; 756 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 757 /* Reason: Loads the ROMs and thus can only be used one time - internally */ 758 dc->user_creatable = false; 759 } 760 761 static const TypeInfo s390_ipl_info = { 762 .class_init = s390_ipl_class_init, 763 .parent = TYPE_DEVICE, 764 .name = TYPE_S390_IPL, 765 .instance_size = sizeof(S390IPLState), 766 }; 767 768 static void s390_ipl_register_types(void) 769 { 770 type_register_static(&s390_ipl_info); 771 } 772 773 type_init(s390_ipl_register_types) 774