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