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 "qapi/error.h" 18 #include "sysemu/reset.h" 19 #include "sysemu/runstate.h" 20 #include "sysemu/sysemu.h" 21 #include "sysemu/tcg.h" 22 #include "cpu.h" 23 #include "elf.h" 24 #include "hw/loader.h" 25 #include "hw/qdev-properties.h" 26 #include "hw/boards.h" 27 #include "hw/s390x/virtio-ccw.h" 28 #include "hw/s390x/vfio-ccw.h" 29 #include "hw/s390x/css.h" 30 #include "hw/s390x/ebcdic.h" 31 #include "hw/s390x/pv.h" 32 #include "ipl.h" 33 #include "qemu/error-report.h" 34 #include "qemu/config-file.h" 35 #include "qemu/cutils.h" 36 #include "qemu/option.h" 37 #include "exec/exec-all.h" 38 39 #define KERN_IMAGE_START 0x010000UL 40 #define LINUX_MAGIC_ADDR 0x010008UL 41 #define KERN_PARM_AREA 0x010480UL 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 S390IPLState *ipl = S390_IPL(dev); 116 uint32_t *ipl_psw; 117 uint64_t pentry; 118 char *magic; 119 int kernel_size; 120 121 int bios_size; 122 char *bios_filename; 123 124 /* 125 * Always load the bios if it was enforced, 126 * even if an external kernel has been defined. 127 */ 128 if (!ipl->kernel || ipl->enforce_bios) { 129 uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL; 130 131 if (bios_name == NULL) { 132 bios_name = ipl->firmware; 133 } 134 135 bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); 136 if (bios_filename == NULL) { 137 error_setg(errp, "could not find stage1 bootloader"); 138 return; 139 } 140 141 bios_size = load_elf(bios_filename, NULL, 142 bios_translate_addr, &fwbase, 143 &ipl->bios_start_addr, NULL, NULL, NULL, 1, 144 EM_S390, 0, 0); 145 if (bios_size > 0) { 146 /* Adjust ELF start address to final location */ 147 ipl->bios_start_addr += fwbase; 148 } else { 149 /* Try to load non-ELF file */ 150 bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, 151 4096); 152 ipl->bios_start_addr = ZIPL_IMAGE_START; 153 } 154 g_free(bios_filename); 155 156 if (bios_size == -1) { 157 error_setg(errp, "could not load bootloader '%s'", bios_name); 158 return; 159 } 160 161 /* default boot target is the bios */ 162 ipl->start_addr = ipl->bios_start_addr; 163 } 164 165 if (ipl->kernel) { 166 kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, 167 &pentry, NULL, 168 NULL, NULL, 1, EM_S390, 0, 0); 169 if (kernel_size < 0) { 170 kernel_size = load_image_targphys(ipl->kernel, 0, ram_size); 171 if (kernel_size < 0) { 172 error_setg(errp, "could not load kernel '%s'", ipl->kernel); 173 return; 174 } 175 /* if this is Linux use KERN_IMAGE_START */ 176 magic = rom_ptr(LINUX_MAGIC_ADDR, 6); 177 if (magic && !memcmp(magic, "S390EP", 6)) { 178 pentry = KERN_IMAGE_START; 179 } else { 180 /* if not Linux load the address of the (short) IPL PSW */ 181 ipl_psw = rom_ptr(4, 4); 182 if (ipl_psw) { 183 pentry = be32_to_cpu(*ipl_psw) & PSW_MASK_SHORT_ADDR; 184 } else { 185 error_setg(errp, "Could not get IPL PSW"); 186 return; 187 } 188 } 189 } 190 /* 191 * Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the 192 * kernel parameters here as well. Note: For old kernels (up to 3.2) 193 * we can not rely on the ELF entry point - it was 0x800 (the SALIPL 194 * loader) and it won't work. For this case we force it to 0x10000, too. 195 */ 196 if (pentry == KERN_IMAGE_START || pentry == 0x800) { 197 char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1); 198 ipl->start_addr = KERN_IMAGE_START; 199 /* Overwrite parameters in the kernel image, which are "rom" */ 200 if (parm_area) { 201 strcpy(parm_area, ipl->cmdline); 202 } 203 } else { 204 ipl->start_addr = pentry; 205 } 206 207 if (ipl->initrd) { 208 ram_addr_t initrd_offset; 209 int initrd_size; 210 uint64_t *romptr; 211 212 initrd_offset = INITRD_START; 213 while (kernel_size + 0x100000 > initrd_offset) { 214 initrd_offset += 0x100000; 215 } 216 initrd_size = load_image_targphys(ipl->initrd, initrd_offset, 217 ram_size - initrd_offset); 218 if (initrd_size == -1) { 219 error_setg(errp, "could not load initrd '%s'", ipl->initrd); 220 return; 221 } 222 223 /* 224 * we have to overwrite values in the kernel image, 225 * which are "rom" 226 */ 227 romptr = rom_ptr(INITRD_PARM_START, 16); 228 if (romptr) { 229 stq_p(romptr, initrd_offset); 230 stq_p(romptr + 1, initrd_size); 231 } 232 } 233 } 234 /* 235 * Don't ever use the migrated values, they could come from a different 236 * BIOS and therefore don't work. But still migrate the values, so 237 * QEMUs relying on it don't break. 238 */ 239 ipl->compat_start_addr = ipl->start_addr; 240 ipl->compat_bios_start_addr = ipl->bios_start_addr; 241 /* 242 * Because this Device is not on any bus in the qbus tree (it is 243 * not a sysbus device and it's not on some other bus like a PCI 244 * bus) it will not be automatically reset by the 'reset the 245 * sysbus' hook registered by vl.c like most devices. So we must 246 * manually register a reset hook for it. 247 * TODO: there should be a better way to do this. 248 */ 249 qemu_register_reset(resettable_cold_reset_fn, dev); 250 } 251 252 static Property s390_ipl_properties[] = { 253 DEFINE_PROP_STRING("kernel", S390IPLState, kernel), 254 DEFINE_PROP_STRING("initrd", S390IPLState, initrd), 255 DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline), 256 DEFINE_PROP_STRING("firmware", S390IPLState, firmware), 257 DEFINE_PROP_STRING("netboot_fw", S390IPLState, netboot_fw), 258 DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false), 259 DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration, 260 true), 261 DEFINE_PROP_END_OF_LIST(), 262 }; 263 264 static void s390_ipl_set_boot_menu(S390IPLState *ipl) 265 { 266 QemuOptsList *plist = qemu_find_opts("boot-opts"); 267 QemuOpts *opts = QTAILQ_FIRST(&plist->head); 268 const char *tmp; 269 unsigned long splash_time = 0; 270 271 if (!get_boot_device(0)) { 272 if (boot_menu) { 273 error_report("boot menu requires a bootindex to be specified for " 274 "the IPL device"); 275 } 276 return; 277 } 278 279 switch (ipl->iplb.pbt) { 280 case S390_IPL_TYPE_CCW: 281 /* In the absence of -boot menu, use zipl parameters */ 282 if (!qemu_opt_get(opts, "menu")) { 283 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL; 284 return; 285 } 286 break; 287 case S390_IPL_TYPE_QEMU_SCSI: 288 break; 289 default: 290 if (boot_menu) { 291 error_report("boot menu is not supported for this device type"); 292 } 293 return; 294 } 295 296 if (!boot_menu) { 297 return; 298 } 299 300 ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD; 301 302 tmp = qemu_opt_get(opts, "splash-time"); 303 304 if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) { 305 error_report("splash-time is invalid, forcing it to 0"); 306 ipl->qipl.boot_menu_timeout = 0; 307 return; 308 } 309 310 if (splash_time > 0xffffffff) { 311 error_report("splash-time is too large, forcing it to max value"); 312 ipl->qipl.boot_menu_timeout = 0xffffffff; 313 return; 314 } 315 316 ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time); 317 } 318 319 #define CCW_DEVTYPE_NONE 0x00 320 #define CCW_DEVTYPE_VIRTIO 0x01 321 #define CCW_DEVTYPE_VIRTIO_NET 0x02 322 #define CCW_DEVTYPE_SCSI 0x03 323 #define CCW_DEVTYPE_VFIO 0x04 324 325 static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype) 326 { 327 CcwDevice *ccw_dev = NULL; 328 int tmp_dt = CCW_DEVTYPE_NONE; 329 330 if (dev_st) { 331 VirtIONet *virtio_net_dev = (VirtIONet *) 332 object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET); 333 VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) 334 object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), 335 TYPE_VIRTIO_CCW_DEVICE); 336 VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *) 337 object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW); 338 339 if (virtio_ccw_dev) { 340 ccw_dev = CCW_DEVICE(virtio_ccw_dev); 341 if (virtio_net_dev) { 342 tmp_dt = CCW_DEVTYPE_VIRTIO_NET; 343 } else { 344 tmp_dt = CCW_DEVTYPE_VIRTIO; 345 } 346 } else if (vfio_ccw_dev) { 347 ccw_dev = CCW_DEVICE(vfio_ccw_dev); 348 tmp_dt = CCW_DEVTYPE_VFIO; 349 } else { 350 SCSIDevice *sd = (SCSIDevice *) 351 object_dynamic_cast(OBJECT(dev_st), 352 TYPE_SCSI_DEVICE); 353 if (sd) { 354 SCSIBus *bus = scsi_bus_from_device(sd); 355 VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus); 356 VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, 357 vdev); 358 359 ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw), 360 TYPE_CCW_DEVICE); 361 tmp_dt = CCW_DEVTYPE_SCSI; 362 } 363 } 364 } 365 if (devtype) { 366 *devtype = tmp_dt; 367 } 368 return ccw_dev; 369 } 370 371 static bool s390_gen_initial_iplb(S390IPLState *ipl) 372 { 373 DeviceState *dev_st; 374 CcwDevice *ccw_dev = NULL; 375 SCSIDevice *sd; 376 int devtype; 377 378 dev_st = get_boot_device(0); 379 if (dev_st) { 380 ccw_dev = s390_get_ccw_device(dev_st, &devtype); 381 } 382 383 /* 384 * Currently allow IPL only from CCW devices. 385 */ 386 if (ccw_dev) { 387 switch (devtype) { 388 case CCW_DEVTYPE_SCSI: 389 sd = SCSI_DEVICE(dev_st); 390 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); 391 ipl->iplb.blk0_len = 392 cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN); 393 ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI; 394 ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); 395 ipl->iplb.scsi.target = cpu_to_be16(sd->id); 396 ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); 397 ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); 398 ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; 399 break; 400 case CCW_DEVTYPE_VFIO: 401 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 402 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 403 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 404 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 405 break; 406 case CCW_DEVTYPE_VIRTIO_NET: 407 ipl->netboot = true; 408 /* Fall through to CCW_DEVTYPE_VIRTIO case */ 409 case CCW_DEVTYPE_VIRTIO: 410 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); 411 ipl->iplb.blk0_len = 412 cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); 413 ipl->iplb.pbt = S390_IPL_TYPE_CCW; 414 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); 415 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; 416 break; 417 } 418 419 if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) { 420 ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID; 421 } 422 423 return true; 424 } 425 426 return false; 427 } 428 429 int s390_ipl_set_loadparm(uint8_t *loadparm) 430 { 431 MachineState *machine = MACHINE(qdev_get_machine()); 432 char *lp = object_property_get_str(OBJECT(machine), "loadparm", NULL); 433 434 if (lp) { 435 int i; 436 437 /* lp is an uppercase string without leading/embedded spaces */ 438 for (i = 0; i < 8 && lp[i]; i++) { 439 loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]]; 440 } 441 442 if (i < 8) { 443 memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */ 444 } 445 446 g_free(lp); 447 return 0; 448 } 449 450 return -1; 451 } 452 453 static int load_netboot_image(Error **errp) 454 { 455 S390IPLState *ipl = get_ipl_device(); 456 char *netboot_filename; 457 MemoryRegion *sysmem = get_system_memory(); 458 MemoryRegion *mr = NULL; 459 void *ram_ptr = NULL; 460 int img_size = -1; 461 462 mr = memory_region_find(sysmem, 0, 1).mr; 463 if (!mr) { 464 error_setg(errp, "Failed to find memory region at address 0"); 465 return -1; 466 } 467 468 ram_ptr = memory_region_get_ram_ptr(mr); 469 if (!ram_ptr) { 470 error_setg(errp, "No RAM found"); 471 goto unref_mr; 472 } 473 474 netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw); 475 if (netboot_filename == NULL) { 476 error_setg(errp, "Could not find network bootloader '%s'", 477 ipl->netboot_fw); 478 goto unref_mr; 479 } 480 481 img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL, 482 &ipl->start_addr, 483 NULL, NULL, NULL, 1, EM_S390, 0, 0, NULL, 484 false); 485 486 if (img_size < 0) { 487 img_size = load_image_size(netboot_filename, ram_ptr, ram_size); 488 ipl->start_addr = KERN_IMAGE_START; 489 } 490 491 if (img_size < 0) { 492 error_setg(errp, "Failed to load network bootloader"); 493 } 494 495 g_free(netboot_filename); 496 497 unref_mr: 498 memory_region_unref(mr); 499 return img_size; 500 } 501 502 static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb, 503 int virtio_id) 504 { 505 uint8_t cssid; 506 uint8_t ssid; 507 uint16_t devno; 508 uint16_t schid; 509 SubchDev *sch = NULL; 510 511 if (iplb->pbt != S390_IPL_TYPE_CCW) { 512 return false; 513 } 514 515 devno = be16_to_cpu(iplb->ccw.devno); 516 ssid = iplb->ccw.ssid & 3; 517 518 for (schid = 0; schid < MAX_SCHID; schid++) { 519 for (cssid = 0; cssid < MAX_CSSID; cssid++) { 520 sch = css_find_subch(1, cssid, ssid, schid); 521 522 if (sch && sch->devno == devno) { 523 return sch->id.cu_model == virtio_id; 524 } 525 } 526 } 527 return false; 528 } 529 530 static bool is_virtio_net_device(IplParameterBlock *iplb) 531 { 532 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET); 533 } 534 535 static bool is_virtio_scsi_device(IplParameterBlock *iplb) 536 { 537 return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); 538 } 539 540 static void update_machine_ipl_properties(IplParameterBlock *iplb) 541 { 542 Object *machine = qdev_get_machine(); 543 Error *err = NULL; 544 545 /* Sync loadparm */ 546 if (iplb->flags & DIAG308_FLAGS_LP_VALID) { 547 uint8_t *ebcdic_loadparm = iplb->loadparm; 548 char ascii_loadparm[9]; 549 int i; 550 551 for (i = 0; i < 8 && ebcdic_loadparm[i]; i++) { 552 ascii_loadparm[i] = ebcdic2ascii[(uint8_t) ebcdic_loadparm[i]]; 553 } 554 ascii_loadparm[i] = 0; 555 object_property_set_str(machine, "loadparm", ascii_loadparm, &err); 556 } else { 557 object_property_set_str(machine, "loadparm", "", &err); 558 } 559 if (err) { 560 warn_report_err(err); 561 } 562 } 563 564 void s390_ipl_update_diag308(IplParameterBlock *iplb) 565 { 566 S390IPLState *ipl = get_ipl_device(); 567 568 /* 569 * The IPLB set and retrieved by subcodes 8/9 is completely 570 * separate from the one managed via subcodes 5/6. 571 */ 572 if (iplb->pbt == S390_IPL_TYPE_PV) { 573 ipl->iplb_pv = *iplb; 574 ipl->iplb_valid_pv = true; 575 } else { 576 ipl->iplb = *iplb; 577 ipl->iplb_valid = true; 578 } 579 ipl->netboot = is_virtio_net_device(iplb); 580 update_machine_ipl_properties(iplb); 581 } 582 583 IplParameterBlock *s390_ipl_get_iplb_pv(void) 584 { 585 S390IPLState *ipl = get_ipl_device(); 586 587 if (!ipl->iplb_valid_pv) { 588 return NULL; 589 } 590 return &ipl->iplb_pv; 591 } 592 593 IplParameterBlock *s390_ipl_get_iplb(void) 594 { 595 S390IPLState *ipl = get_ipl_device(); 596 597 if (!ipl->iplb_valid) { 598 return NULL; 599 } 600 return &ipl->iplb; 601 } 602 603 void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) 604 { 605 S390IPLState *ipl = get_ipl_device(); 606 607 if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { 608 /* use CPU 0 for full resets */ 609 ipl->reset_cpu_index = 0; 610 } else { 611 ipl->reset_cpu_index = cs->cpu_index; 612 } 613 ipl->reset_type = reset_type; 614 615 if (reset_type == S390_RESET_REIPL && 616 ipl->iplb_valid && 617 !ipl->netboot && 618 ipl->iplb.pbt == S390_IPL_TYPE_CCW && 619 is_virtio_scsi_device(&ipl->iplb)) { 620 CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0), NULL); 621 622 if (ccw_dev && 623 cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno && 624 (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) { 625 /* 626 * this is the original boot device's SCSI 627 * so restore IPL parameter info from it 628 */ 629 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 630 } 631 } 632 if (reset_type == S390_RESET_MODIFIED_CLEAR || 633 reset_type == S390_RESET_LOAD_NORMAL || 634 reset_type == S390_RESET_PV) { 635 /* ignore -no-reboot, send no event */ 636 qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); 637 } else { 638 qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); 639 } 640 /* as this is triggered by a CPU, make sure to exit the loop */ 641 if (tcg_enabled()) { 642 cpu_loop_exit(cs); 643 } 644 } 645 646 void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type) 647 { 648 S390IPLState *ipl = get_ipl_device(); 649 650 *cs = qemu_get_cpu(ipl->reset_cpu_index); 651 if (!*cs) { 652 /* use any CPU */ 653 *cs = first_cpu; 654 } 655 *reset_type = ipl->reset_type; 656 } 657 658 void s390_ipl_clear_reset_request(void) 659 { 660 S390IPLState *ipl = get_ipl_device(); 661 662 ipl->reset_type = S390_RESET_EXTERNAL; 663 /* use CPU 0 for full resets */ 664 ipl->reset_cpu_index = 0; 665 } 666 667 static void s390_ipl_prepare_qipl(S390CPU *cpu) 668 { 669 S390IPLState *ipl = get_ipl_device(); 670 uint8_t *addr; 671 uint64_t len = 4096; 672 673 addr = cpu_physical_memory_map(cpu->env.psa, &len, true); 674 if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) { 675 error_report("Cannot set QEMU IPL parameters"); 676 return; 677 } 678 memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters)); 679 cpu_physical_memory_unmap(addr, len, 1, len); 680 } 681 682 int s390_ipl_prepare_pv_header(void) 683 { 684 IplParameterBlock *ipib = s390_ipl_get_iplb_pv(); 685 IPLBlockPV *ipib_pv = &ipib->pv; 686 void *hdr = g_malloc(ipib_pv->pv_header_len); 687 int rc; 688 689 cpu_physical_memory_read(ipib_pv->pv_header_addr, hdr, 690 ipib_pv->pv_header_len); 691 rc = s390_pv_set_sec_parms((uintptr_t)hdr, 692 ipib_pv->pv_header_len); 693 g_free(hdr); 694 return rc; 695 } 696 697 int s390_ipl_pv_unpack(void) 698 { 699 IplParameterBlock *ipib = s390_ipl_get_iplb_pv(); 700 IPLBlockPV *ipib_pv = &ipib->pv; 701 int i, rc = 0; 702 703 for (i = 0; i < ipib_pv->num_comp; i++) { 704 rc = s390_pv_unpack(ipib_pv->components[i].addr, 705 TARGET_PAGE_ALIGN(ipib_pv->components[i].size), 706 ipib_pv->components[i].tweak_pref); 707 if (rc) { 708 break; 709 } 710 } 711 return rc; 712 } 713 714 void s390_ipl_prepare_cpu(S390CPU *cpu) 715 { 716 S390IPLState *ipl = get_ipl_device(); 717 Error *err = NULL; 718 719 cpu->env.psw.addr = ipl->start_addr; 720 cpu->env.psw.mask = IPL_PSW_MASK; 721 722 if (!ipl->kernel || ipl->iplb_valid) { 723 cpu->env.psw.addr = ipl->bios_start_addr; 724 if (!ipl->iplb_valid) { 725 ipl->iplb_valid = s390_gen_initial_iplb(ipl); 726 } 727 } 728 if (ipl->netboot) { 729 if (load_netboot_image(&err) < 0) { 730 error_report_err(err); 731 exit(1); 732 } 733 ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); 734 } 735 s390_ipl_set_boot_menu(ipl); 736 s390_ipl_prepare_qipl(cpu); 737 } 738 739 static void s390_ipl_reset(DeviceState *dev) 740 { 741 S390IPLState *ipl = S390_IPL(dev); 742 743 if (ipl->reset_type != S390_RESET_REIPL) { 744 ipl->iplb_valid = false; 745 memset(&ipl->iplb, 0, sizeof(IplParameterBlock)); 746 } 747 } 748 749 static void s390_ipl_class_init(ObjectClass *klass, void *data) 750 { 751 DeviceClass *dc = DEVICE_CLASS(klass); 752 753 dc->realize = s390_ipl_realize; 754 device_class_set_props(dc, s390_ipl_properties); 755 dc->reset = s390_ipl_reset; 756 dc->vmsd = &vmstate_ipl; 757 set_bit(DEVICE_CATEGORY_MISC, dc->categories); 758 /* Reason: Loads the ROMs and thus can only be used one time - internally */ 759 dc->user_creatable = false; 760 } 761 762 static const TypeInfo s390_ipl_info = { 763 .class_init = s390_ipl_class_init, 764 .parent = TYPE_DEVICE, 765 .name = TYPE_S390_IPL, 766 .instance_size = sizeof(S390IPLState), 767 }; 768 769 static void s390_ipl_register_types(void) 770 { 771 type_register_static(&s390_ipl_info); 772 } 773 774 type_init(s390_ipl_register_types) 775