hw/s390x/ipl.c

   1 /*
   2  * bootloader support
   3  *
   4  * Copyright IBM, Corp. 2012
   5  *
   6  * Authors:
   7  *  Christian Borntraeger <borntraeger@de.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or (at your
  10  * option) any later version.  See the COPYING file in the top-level directory.
  11  *
  12  */
  13
  14 #include "qemu/osdep.h"
  15 #include "qapi/error.h"
  16 #include "sysemu/sysemu.h"
  17 #include "cpu.h"
  18 #include "elf.h"
  19 #include "hw/loader.h"
  20 #include "hw/boards.h"
  21 #include "hw/s390x/virtio-ccw.h"
  22 #include "hw/s390x/css.h"
  23 #include "hw/s390x/ebcdic.h"
  24 #include "ipl.h"
  25 #include "qemu/error-report.h"
  26 #include "qemu/config-file.h"
  27 #include "qemu/cutils.h"
  28 #include "qemu/option.h"
  29 #include "exec/exec-all.h"
  30
  31 #define KERN_IMAGE_START                0x010000UL
  32 #define LINUX_MAGIC_ADDR                0x010008UL
  33 #define KERN_PARM_AREA                  0x010480UL
  34 #define INITRD_START                    0x800000UL
  35 #define INITRD_PARM_START               0x010408UL
  36 #define PARMFILE_START                  0x001000UL
  37 #define ZIPL_IMAGE_START                0x009000UL
  38 #define IPL_PSW_MASK                    (PSW_MASK_32 | PSW_MASK_64)
  39
  40 static bool iplb_extended_needed(void *opaque)
  41 {
  42     S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL));
  43
  44     return ipl->iplbext_migration;
  45 }
  46
  47 static const VMStateDescription vmstate_iplb_extended = {
  48     .name = "ipl/iplb_extended",
  49     .version_id = 0,
  50     .minimum_version_id = 0,
  51     .needed = iplb_extended_needed,
  52     .fields = (VMStateField[]) {
  53         VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200),
  54         VMSTATE_END_OF_LIST()
  55     }
  56 };
  57
  58 static const VMStateDescription vmstate_iplb = {
  59     .name = "ipl/iplb",
  60     .version_id = 0,
  61     .minimum_version_id = 0,
  62     .fields = (VMStateField[]) {
  63         VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110),
  64         VMSTATE_UINT16(devno, IplParameterBlock),
  65         VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88),
  66         VMSTATE_END_OF_LIST()
  67     },
  68     .subsections = (const VMStateDescription*[]) {
  69         &vmstate_iplb_extended,
  70         NULL
  71     }
  72 };
  73
  74 static const VMStateDescription vmstate_ipl = {
  75     .name = "ipl",
  76     .version_id = 0,
  77     .minimum_version_id = 0,
  78     .fields = (VMStateField[]) {
  79         VMSTATE_UINT64(compat_start_addr, S390IPLState),
  80         VMSTATE_UINT64(compat_bios_start_addr, S390IPLState),
  81         VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock),
  82         VMSTATE_BOOL(iplb_valid, S390IPLState),
  83         VMSTATE_UINT8(cssid, S390IPLState),
  84         VMSTATE_UINT8(ssid, S390IPLState),
  85         VMSTATE_UINT16(devno, S390IPLState),
  86         VMSTATE_END_OF_LIST()
  87      }
  88 };
  89
  90 static S390IPLState *get_ipl_device(void)
  91 {
  92     return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL));
  93 }
  94
  95 static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr)
  96 {
  97     uint64_t dstaddr = *(uint64_t *) opaque;
  98     /*
  99      * Assuming that our s390-ccw.img was linked for starting at address 0,
 100      * we can simply add the destination address for the final location
 101      */
 102     return srcaddr + dstaddr;
 103 }
 104
 105 static void s390_ipl_realize(DeviceState *dev, Error **errp)
 106 {
 107     S390IPLState *ipl = S390_IPL(dev);
 108     uint32_t *ipl_psw;
 109     uint64_t pentry;
 110     char *magic;
 111     int kernel_size;
 112     Error *err = NULL;
 113
 114     int bios_size;
 115     char *bios_filename;
 116
 117     /*
 118      * Always load the bios if it was enforced,
 119      * even if an external kernel has been defined.
 120      */
 121     if (!ipl->kernel || ipl->enforce_bios) {
 122         uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL;
 123
 124         if (bios_name == NULL) {
 125             bios_name = ipl->firmware;
 126         }
 127
 128         bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
 129         if (bios_filename == NULL) {
 130             error_setg(&err, "could not find stage1 bootloader");
 131             goto error;
 132         }
 133
 134         bios_size = load_elf(bios_filename, NULL,
 135                              bios_translate_addr, &fwbase,
 136                              &ipl->bios_start_addr, NULL, NULL, 1,
 137                              EM_S390, 0, 0);
 138         if (bios_size > 0) {
 139             /* Adjust ELF start address to final location */
 140             ipl->bios_start_addr += fwbase;
 141         } else {
 142             /* Try to load non-ELF file */
 143             bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START,
 144                                             4096);
 145             ipl->bios_start_addr = ZIPL_IMAGE_START;
 146         }
 147         g_free(bios_filename);
 148
 149         if (bios_size == -1) {
 150             error_setg(&err, "could not load bootloader '%s'", bios_name);
 151             goto error;
 152         }
 153
 154         /* default boot target is the bios */
 155         ipl->start_addr = ipl->bios_start_addr;
 156     }
 157
 158     if (ipl->kernel) {
 159         kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL,
 160                                &pentry, NULL,
 161                                NULL, 1, EM_S390, 0, 0);
 162         if (kernel_size < 0) {
 163             kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
 164             if (kernel_size < 0) {
 165                 error_setg(&err, "could not load kernel '%s'", ipl->kernel);
 166                 goto error;
 167             }
 168             /* if this is Linux use KERN_IMAGE_START */
 169             magic = rom_ptr(LINUX_MAGIC_ADDR, 6);
 170             if (magic && !memcmp(magic, "S390EP", 6)) {
 171                 pentry = KERN_IMAGE_START;
 172             } else {
 173                 /* if not Linux load the address of the (short) IPL PSW */
 174                 ipl_psw = rom_ptr(4, 4);
 175                 if (ipl_psw) {
 176                     pentry = be32_to_cpu(*ipl_psw) & 0x7fffffffUL;
 177                 } else {
 178                     error_setg(&err, "Could not get IPL PSW");
 179                     goto error;
 180                 }
 181             }
 182         }
 183         /*
 184          * Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the
 185          * kernel parameters here as well. Note: For old kernels (up to 3.2)
 186          * we can not rely on the ELF entry point - it was 0x800 (the SALIPL
 187          * loader) and it won't work. For this case we force it to 0x10000, too.
 188          */
 189         if (pentry == KERN_IMAGE_START || pentry == 0x800) {
 190             char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1);
 191             ipl->start_addr = KERN_IMAGE_START;
 192             /* Overwrite parameters in the kernel image, which are "rom" */
 193             if (parm_area) {
 194                 strcpy(parm_area, ipl->cmdline);
 195             }
 196         } else {
 197             ipl->start_addr = pentry;
 198         }
 199
 200         if (ipl->initrd) {
 201             ram_addr_t initrd_offset;
 202             int initrd_size;
 203             uint64_t *romptr;
 204
 205             initrd_offset = INITRD_START;
 206             while (kernel_size + 0x100000 > initrd_offset) {
 207                 initrd_offset += 0x100000;
 208             }
 209             initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
 210                                               ram_size - initrd_offset);
 211             if (initrd_size == -1) {
 212                 error_setg(&err, "could not load initrd '%s'", ipl->initrd);
 213                 goto error;
 214             }
 215
 216             /*
 217              * we have to overwrite values in the kernel image,
 218              * which are "rom"
 219              */
 220             romptr = rom_ptr(INITRD_PARM_START, 16);
 221             if (romptr) {
 222                 stq_p(romptr, initrd_offset);
 223                 stq_p(romptr + 1, initrd_size);
 224             }
 225         }
 226     }
 227     /*
 228      * Don't ever use the migrated values, they could come from a different
 229      * BIOS and therefore don't work. But still migrate the values, so
 230      * QEMUs relying on it don't break.
 231      */
 232     ipl->compat_start_addr = ipl->start_addr;
 233     ipl->compat_bios_start_addr = ipl->bios_start_addr;
 234     qemu_register_reset(qdev_reset_all_fn, dev);
 235 error:
 236     error_propagate(errp, err);
 237 }
 238
 239 static Property s390_ipl_properties[] = {
 240     DEFINE_PROP_STRING("kernel", S390IPLState, kernel),
 241     DEFINE_PROP_STRING("initrd", S390IPLState, initrd),
 242     DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline),
 243     DEFINE_PROP_STRING("firmware", S390IPLState, firmware),
 244     DEFINE_PROP_STRING("netboot_fw", S390IPLState, netboot_fw),
 245     DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false),
 246     DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration,
 247                      true),
 248     DEFINE_PROP_END_OF_LIST(),
 249 };
 250
 251 static void s390_ipl_set_boot_menu(S390IPLState *ipl)
 252 {
 253     QemuOptsList *plist = qemu_find_opts("boot-opts");
 254     QemuOpts *opts = QTAILQ_FIRST(&plist->head);
 255     uint8_t *flags = &ipl->qipl.qipl_flags;
 256     uint32_t *timeout = &ipl->qipl.boot_menu_timeout;
 257     const char *tmp;
 258     unsigned long splash_time = 0;
 259
 260     if (!get_boot_device(0)) {
 261         if (boot_menu) {
 262             error_report("boot menu requires a bootindex to be specified for "
 263                          "the IPL device");
 264         }
 265         return;
 266     }
 267
 268     switch (ipl->iplb.pbt) {
 269     case S390_IPL_TYPE_CCW:
 270         /* In the absence of -boot menu, use zipl parameters */
 271         if (!qemu_opt_get(opts, "menu")) {
 272             *flags |= QIPL_FLAG_BM_OPTS_ZIPL;
 273             return;
 274         }
 275         break;
 276     case S390_IPL_TYPE_QEMU_SCSI:
 277         break;
 278     default:
 279         if (boot_menu) {
 280             error_report("boot menu is not supported for this device type");
 281         }
 282         return;
 283     }
 284
 285     if (!boot_menu) {
 286         return;
 287     }
 288
 289     *flags |= QIPL_FLAG_BM_OPTS_CMD;
 290
 291     tmp = qemu_opt_get(opts, "splash-time");
 292
 293     if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) {
 294         error_report("splash-time is invalid, forcing it to 0");
 295         *timeout = 0;
 296         return;
 297     }
 298
 299     if (splash_time > 0xffffffff) {
 300         error_report("splash-time is too large, forcing it to max value");
 301         *timeout = 0xffffffff;
 302         return;
 303     }
 304
 305     *timeout = cpu_to_be32(splash_time);
 306 }
 307
 308 static CcwDevice *s390_get_ccw_device(DeviceState *dev_st)
 309 {
 310     CcwDevice *ccw_dev = NULL;
 311
 312     if (dev_st) {
 313         VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *)
 314             object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
 315                                 TYPE_VIRTIO_CCW_DEVICE);
 316         if (virtio_ccw_dev) {
 317             ccw_dev = CCW_DEVICE(virtio_ccw_dev);
 318         } else {
 319             SCSIDevice *sd = (SCSIDevice *)
 320                 object_dynamic_cast(OBJECT(dev_st),
 321                                     TYPE_SCSI_DEVICE);
 322             if (sd) {
 323                 SCSIBus *bus = scsi_bus_from_device(sd);
 324                 VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus);
 325                 VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw,
 326                                                        vdev);
 327
 328                 ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw),
 329                                                            TYPE_CCW_DEVICE);
 330             }
 331         }
 332     }
 333     return ccw_dev;
 334 }
 335
 336 static bool s390_gen_initial_iplb(S390IPLState *ipl)
 337 {
 338     DeviceState *dev_st;
 339     CcwDevice *ccw_dev = NULL;
 340
 341     dev_st = get_boot_device(0);
 342     if (dev_st) {
 343         ccw_dev = s390_get_ccw_device(dev_st);
 344     }
 345
 346     /*
 347      * Currently allow IPL only from CCW devices.
 348      */
 349     if (ccw_dev) {
 350         SCSIDevice *sd = (SCSIDevice *) object_dynamic_cast(OBJECT(dev_st),
 351                                                             TYPE_SCSI_DEVICE);
 352
 353         if (sd) {
 354             ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN);
 355             ipl->iplb.blk0_len =
 356                 cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN);
 357             ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI;
 358             ipl->iplb.scsi.lun = cpu_to_be32(sd->lun);
 359             ipl->iplb.scsi.target = cpu_to_be16(sd->id);
 360             ipl->iplb.scsi.channel = cpu_to_be16(sd->channel);
 361             ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno);
 362             ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3;
 363         } else {
 364             VirtIONet *vn = (VirtIONet *) object_dynamic_cast(OBJECT(dev_st),
 365                                                               TYPE_VIRTIO_NET);
 366
 367             ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN);
 368             ipl->iplb.blk0_len =
 369                 cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN);
 370             ipl->iplb.pbt = S390_IPL_TYPE_CCW;
 371             ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno);
 372             ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3;
 373
 374             if (vn) {
 375                 ipl->netboot = true;
 376             }
 377         }
 378
 379         if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) {
 380             ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID;
 381         }
 382
 383         return true;
 384     }
 385
 386     return false;
 387 }
 388
 389 int s390_ipl_set_loadparm(uint8_t *loadparm)
 390 {
 391     MachineState *machine = MACHINE(qdev_get_machine());
 392     char *lp = object_property_get_str(OBJECT(machine), "loadparm", NULL);
 393
 394     if (lp) {
 395         int i;
 396
 397         /* lp is an uppercase string without leading/embedded spaces */
 398         for (i = 0; i < 8 && lp[i]; i++) {
 399             loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]];
 400         }
 401
 402         if (i < 8) {
 403             memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */
 404         }
 405
 406         g_free(lp);
 407         return 0;
 408     }
 409
 410     return -1;
 411 }
 412
 413 static int load_netboot_image(Error **errp)
 414 {
 415     S390IPLState *ipl = get_ipl_device();
 416     char *netboot_filename;
 417     MemoryRegion *sysmem =  get_system_memory();
 418     MemoryRegion *mr = NULL;
 419     void *ram_ptr = NULL;
 420     int img_size = -1;
 421
 422     mr = memory_region_find(sysmem, 0, 1).mr;
 423     if (!mr) {
 424         error_setg(errp, "Failed to find memory region at address 0");
 425         return -1;
 426     }
 427
 428     ram_ptr = memory_region_get_ram_ptr(mr);
 429     if (!ram_ptr) {
 430         error_setg(errp, "No RAM found");
 431         goto unref_mr;
 432     }
 433
 434     netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw);
 435     if (netboot_filename == NULL) {
 436         error_setg(errp, "Could not find network bootloader '%s'",
 437                    ipl->netboot_fw);
 438         goto unref_mr;
 439     }
 440
 441     img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL,
 442                             &ipl->start_addr,
 443                             NULL, NULL, 1, EM_S390, 0, 0, NULL, false);
 444
 445     if (img_size < 0) {
 446         img_size = load_image_size(netboot_filename, ram_ptr, ram_size);
 447         ipl->start_addr = KERN_IMAGE_START;
 448     }
 449
 450     if (img_size < 0) {
 451         error_setg(errp, "Failed to load network bootloader");
 452     }
 453
 454     g_free(netboot_filename);
 455
 456 unref_mr:
 457     memory_region_unref(mr);
 458     return img_size;
 459 }
 460
 461 static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb,
 462                                          int virtio_id)
 463 {
 464     uint8_t cssid;
 465     uint8_t ssid;
 466     uint16_t devno;
 467     uint16_t schid;
 468     SubchDev *sch = NULL;
 469
 470     if (iplb->pbt != S390_IPL_TYPE_CCW) {
 471         return false;
 472     }
 473
 474     devno = be16_to_cpu(iplb->ccw.devno);
 475     ssid = iplb->ccw.ssid & 3;
 476
 477     for (schid = 0; schid < MAX_SCHID; schid++) {
 478         for (cssid = 0; cssid < MAX_CSSID; cssid++) {
 479             sch = css_find_subch(1, cssid, ssid, schid);
 480
 481             if (sch && sch->devno == devno) {
 482                 return sch->id.cu_model == virtio_id;
 483             }
 484         }
 485     }
 486     return false;
 487 }
 488
 489 static bool is_virtio_net_device(IplParameterBlock *iplb)
 490 {
 491     return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET);
 492 }
 493
 494 static bool is_virtio_scsi_device(IplParameterBlock *iplb)
 495 {
 496     return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI);
 497 }
 498
 499 void s390_ipl_update_diag308(IplParameterBlock *iplb)
 500 {
 501     S390IPLState *ipl = get_ipl_device();
 502
 503     ipl->iplb = *iplb;
 504     ipl->iplb_valid = true;
 505     ipl->netboot = is_virtio_net_device(iplb);
 506 }
 507
 508 IplParameterBlock *s390_ipl_get_iplb(void)
 509 {
 510     S390IPLState *ipl = get_ipl_device();
 511
 512     if (!ipl->iplb_valid) {
 513         return NULL;
 514     }
 515     return &ipl->iplb;
 516 }
 517
 518 void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type)
 519 {
 520     S390IPLState *ipl = get_ipl_device();
 521
 522     if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) {
 523         /* use CPU 0 for full resets */
 524         ipl->reset_cpu_index = 0;
 525     } else {
 526         ipl->reset_cpu_index = cs->cpu_index;
 527     }
 528     ipl->reset_type = reset_type;
 529
 530     if (reset_type == S390_RESET_REIPL &&
 531         ipl->iplb_valid &&
 532         !ipl->netboot &&
 533         ipl->iplb.pbt == S390_IPL_TYPE_CCW &&
 534         is_virtio_scsi_device(&ipl->iplb)) {
 535         CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0));
 536
 537         if (ccw_dev &&
 538             cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno &&
 539             (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) {
 540             /*
 541              * this is the original boot device's SCSI
 542              * so restore IPL parameter info from it
 543              */
 544             ipl->iplb_valid = s390_gen_initial_iplb(ipl);
 545         }
 546     }
 547     if (reset_type == S390_RESET_MODIFIED_CLEAR ||
 548         reset_type == S390_RESET_LOAD_NORMAL) {
 549         /* ignore -no-reboot, send no event  */
 550         qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET);
 551     } else {
 552         qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
 553     }
 554     /* as this is triggered by a CPU, make sure to exit the loop */
 555     if (tcg_enabled()) {
 556         cpu_loop_exit(cs);
 557     }
 558 }
 559
 560 void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type)
 561 {
 562     S390IPLState *ipl = get_ipl_device();
 563
 564     *cs = qemu_get_cpu(ipl->reset_cpu_index);
 565     if (!*cs) {
 566         /* use any CPU */
 567         *cs = first_cpu;
 568     }
 569     *reset_type = ipl->reset_type;
 570 }
 571
 572 void s390_ipl_clear_reset_request(void)
 573 {
 574     S390IPLState *ipl = get_ipl_device();
 575
 576     ipl->reset_type = S390_RESET_EXTERNAL;
 577     /* use CPU 0 for full resets */
 578     ipl->reset_cpu_index = 0;
 579 }
 580
 581 static void s390_ipl_prepare_qipl(S390CPU *cpu)
 582 {
 583     S390IPLState *ipl = get_ipl_device();
 584     uint8_t *addr;
 585     uint64_t len = 4096;
 586
 587     addr = cpu_physical_memory_map(cpu->env.psa, &len, 1);
 588     if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) {
 589         error_report("Cannot set QEMU IPL parameters");
 590         return;
 591     }
 592     memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters));
 593     cpu_physical_memory_unmap(addr, len, 1, len);
 594 }
 595
 596 void s390_ipl_prepare_cpu(S390CPU *cpu)
 597 {
 598     S390IPLState *ipl = get_ipl_device();
 599     Error *err = NULL;
 600
 601     cpu->env.psw.addr = ipl->start_addr;
 602     cpu->env.psw.mask = IPL_PSW_MASK;
 603
 604     if (!ipl->kernel || ipl->iplb_valid) {
 605         cpu->env.psw.addr = ipl->bios_start_addr;
 606         if (!ipl->iplb_valid) {
 607             ipl->iplb_valid = s390_gen_initial_iplb(ipl);
 608         }
 609     }
 610     if (ipl->netboot) {
 611         if (load_netboot_image(&err) < 0) {
 612             error_report_err(err);
 613             exit(1);
 614         }
 615         ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr);
 616     }
 617     s390_ipl_set_boot_menu(ipl);
 618     s390_ipl_prepare_qipl(cpu);
 619 }
 620
 621 static void s390_ipl_reset(DeviceState *dev)
 622 {
 623     S390IPLState *ipl = S390_IPL(dev);
 624
 625     if (ipl->reset_type != S390_RESET_REIPL) {
 626         ipl->iplb_valid = false;
 627         memset(&ipl->iplb, 0, sizeof(IplParameterBlock));
 628     }
 629 }
 630
 631 static void s390_ipl_class_init(ObjectClass *klass, void *data)
 632 {
 633     DeviceClass *dc = DEVICE_CLASS(klass);
 634
 635     dc->realize = s390_ipl_realize;
 636     dc->props = s390_ipl_properties;
 637     dc->reset = s390_ipl_reset;
 638     dc->vmsd = &vmstate_ipl;
 639     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
 640     /* Reason: Loads the ROMs and thus can only be used one time - internally */
 641     dc->user_creatable = false;
 642 }
 643
 644 static const TypeInfo s390_ipl_info = {
 645     .class_init = s390_ipl_class_init,
 646     .parent = TYPE_DEVICE,
 647     .name  = TYPE_S390_IPL,
 648     .instance_size  = sizeof(S390IPLState),
 649 };
 650
 651 static void s390_ipl_register_types(void)
 652 {
 653     type_register_static(&s390_ipl_info);
 654 }
 655
 656 type_init(s390_ipl_register_types)