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