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