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 "qemu-common.h" |
16 | #include "qapi/error.h" |
17 | #include "sysemu/reset.h" |
18 | #include "sysemu/runstate.h" |
19 | #include "sysemu/sysemu.h" |
20 | #include "sysemu/tcg.h" |
21 | #include "cpu.h" |
22 | #include "elf.h" |
23 | #include "hw/loader.h" |
24 | #include "hw/qdev-properties.h" |
25 | #include "hw/boards.h" |
26 | #include "hw/s390x/virtio-ccw.h" |
27 | #include "hw/s390x/vfio-ccw.h" |
28 | #include "hw/s390x/css.h" |
29 | #include "hw/s390x/ebcdic.h" |
30 | #include "ipl.h" |
31 | #include "qemu/error-report.h" |
32 | #include "qemu/config-file.h" |
33 | #include "qemu/cutils.h" |
34 | #include "qemu/option.h" |
35 | #include "exec/exec-all.h" |
36 | |
37 | #define KERN_IMAGE_START 0x010000UL |
38 | #define LINUX_MAGIC_ADDR 0x010008UL |
39 | #define KERN_PARM_AREA 0x010480UL |
40 | #define INITRD_START 0x800000UL |
41 | #define INITRD_PARM_START 0x010408UL |
42 | #define PARMFILE_START 0x001000UL |
43 | #define ZIPL_IMAGE_START 0x009000UL |
44 | #define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64) |
45 | |
46 | static bool iplb_extended_needed(void *opaque) |
47 | { |
48 | S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL)); |
49 | |
50 | return ipl->iplbext_migration; |
51 | } |
52 | |
53 | static const VMStateDescription vmstate_iplb_extended = { |
54 | .name = "ipl/iplb_extended" , |
55 | .version_id = 0, |
56 | .minimum_version_id = 0, |
57 | .needed = iplb_extended_needed, |
58 | .fields = (VMStateField[]) { |
59 | VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200), |
60 | VMSTATE_END_OF_LIST() |
61 | } |
62 | }; |
63 | |
64 | static const VMStateDescription vmstate_iplb = { |
65 | .name = "ipl/iplb" , |
66 | .version_id = 0, |
67 | .minimum_version_id = 0, |
68 | .fields = (VMStateField[]) { |
69 | VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110), |
70 | VMSTATE_UINT16(devno, IplParameterBlock), |
71 | VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88), |
72 | VMSTATE_END_OF_LIST() |
73 | }, |
74 | .subsections = (const VMStateDescription*[]) { |
75 | &vmstate_iplb_extended, |
76 | NULL |
77 | } |
78 | }; |
79 | |
80 | static const VMStateDescription vmstate_ipl = { |
81 | .name = "ipl" , |
82 | .version_id = 0, |
83 | .minimum_version_id = 0, |
84 | .fields = (VMStateField[]) { |
85 | VMSTATE_UINT64(compat_start_addr, S390IPLState), |
86 | VMSTATE_UINT64(compat_bios_start_addr, S390IPLState), |
87 | VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock), |
88 | VMSTATE_BOOL(iplb_valid, S390IPLState), |
89 | VMSTATE_UINT8(cssid, S390IPLState), |
90 | VMSTATE_UINT8(ssid, S390IPLState), |
91 | VMSTATE_UINT16(devno, S390IPLState), |
92 | VMSTATE_END_OF_LIST() |
93 | } |
94 | }; |
95 | |
96 | static S390IPLState *get_ipl_device(void) |
97 | { |
98 | return S390_IPL(object_resolve_path_type("" , TYPE_S390_IPL, NULL)); |
99 | } |
100 | |
101 | static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr) |
102 | { |
103 | uint64_t dstaddr = *(uint64_t *) opaque; |
104 | /* |
105 | * Assuming that our s390-ccw.img was linked for starting at address 0, |
106 | * we can simply add the destination address for the final location |
107 | */ |
108 | return srcaddr + dstaddr; |
109 | } |
110 | |
111 | static void s390_ipl_realize(DeviceState *dev, Error **errp) |
112 | { |
113 | S390IPLState *ipl = S390_IPL(dev); |
114 | uint32_t *ipl_psw; |
115 | uint64_t pentry; |
116 | char *magic; |
117 | int kernel_size; |
118 | Error *err = NULL; |
119 | |
120 | int bios_size; |
121 | char *bios_filename; |
122 | |
123 | /* |
124 | * Always load the bios if it was enforced, |
125 | * even if an external kernel has been defined. |
126 | */ |
127 | if (!ipl->kernel || ipl->enforce_bios) { |
128 | uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL; |
129 | |
130 | if (bios_name == NULL) { |
131 | bios_name = ipl->firmware; |
132 | } |
133 | |
134 | bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); |
135 | if (bios_filename == NULL) { |
136 | error_setg(&err, "could not find stage1 bootloader" ); |
137 | goto error; |
138 | } |
139 | |
140 | bios_size = load_elf(bios_filename, NULL, |
141 | bios_translate_addr, &fwbase, |
142 | &ipl->bios_start_addr, NULL, NULL, 1, |
143 | EM_S390, 0, 0); |
144 | if (bios_size > 0) { |
145 | /* Adjust ELF start address to final location */ |
146 | ipl->bios_start_addr += fwbase; |
147 | } else { |
148 | /* Try to load non-ELF file */ |
149 | bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, |
150 | 4096); |
151 | ipl->bios_start_addr = ZIPL_IMAGE_START; |
152 | } |
153 | g_free(bios_filename); |
154 | |
155 | if (bios_size == -1) { |
156 | error_setg(&err, "could not load bootloader '%s'" , bios_name); |
157 | goto error; |
158 | } |
159 | |
160 | /* default boot target is the bios */ |
161 | ipl->start_addr = ipl->bios_start_addr; |
162 | } |
163 | |
164 | if (ipl->kernel) { |
165 | kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, |
166 | &pentry, NULL, |
167 | NULL, 1, EM_S390, 0, 0); |
168 | if (kernel_size < 0) { |
169 | kernel_size = load_image_targphys(ipl->kernel, 0, ram_size); |
170 | if (kernel_size < 0) { |
171 | error_setg(&err, "could not load kernel '%s'" , ipl->kernel); |
172 | goto error; |
173 | } |
174 | /* if this is Linux use KERN_IMAGE_START */ |
175 | magic = rom_ptr(LINUX_MAGIC_ADDR, 6); |
176 | if (magic && !memcmp(magic, "S390EP" , 6)) { |
177 | pentry = KERN_IMAGE_START; |
178 | } else { |
179 | /* if not Linux load the address of the (short) IPL PSW */ |
180 | ipl_psw = rom_ptr(4, 4); |
181 | if (ipl_psw) { |
182 | pentry = be32_to_cpu(*ipl_psw) & 0x7fffffffUL; |
183 | } else { |
184 | error_setg(&err, "Could not get IPL PSW" ); |
185 | goto error; |
186 | } |
187 | } |
188 | } |
189 | /* |
190 | * Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the |
191 | * kernel parameters here as well. Note: For old kernels (up to 3.2) |
192 | * we can not rely on the ELF entry point - it was 0x800 (the SALIPL |
193 | * loader) and it won't work. For this case we force it to 0x10000, too. |
194 | */ |
195 | if (pentry == KERN_IMAGE_START || pentry == 0x800) { |
196 | char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1); |
197 | ipl->start_addr = KERN_IMAGE_START; |
198 | /* Overwrite parameters in the kernel image, which are "rom" */ |
199 | if (parm_area) { |
200 | strcpy(parm_area, ipl->cmdline); |
201 | } |
202 | } else { |
203 | ipl->start_addr = pentry; |
204 | } |
205 | |
206 | if (ipl->initrd) { |
207 | ram_addr_t initrd_offset; |
208 | int initrd_size; |
209 | uint64_t *romptr; |
210 | |
211 | initrd_offset = INITRD_START; |
212 | while (kernel_size + 0x100000 > initrd_offset) { |
213 | initrd_offset += 0x100000; |
214 | } |
215 | initrd_size = load_image_targphys(ipl->initrd, initrd_offset, |
216 | ram_size - initrd_offset); |
217 | if (initrd_size == -1) { |
218 | error_setg(&err, "could not load initrd '%s'" , ipl->initrd); |
219 | goto error; |
220 | } |
221 | |
222 | /* |
223 | * we have to overwrite values in the kernel image, |
224 | * which are "rom" |
225 | */ |
226 | romptr = rom_ptr(INITRD_PARM_START, 16); |
227 | if (romptr) { |
228 | stq_p(romptr, initrd_offset); |
229 | stq_p(romptr + 1, initrd_size); |
230 | } |
231 | } |
232 | } |
233 | /* |
234 | * Don't ever use the migrated values, they could come from a different |
235 | * BIOS and therefore don't work. But still migrate the values, so |
236 | * QEMUs relying on it don't break. |
237 | */ |
238 | ipl->compat_start_addr = ipl->start_addr; |
239 | ipl->compat_bios_start_addr = ipl->bios_start_addr; |
240 | qemu_register_reset(qdev_reset_all_fn, dev); |
241 | error: |
242 | error_propagate(errp, err); |
243 | } |
244 | |
245 | static Property s390_ipl_properties[] = { |
246 | DEFINE_PROP_STRING("kernel" , S390IPLState, kernel), |
247 | DEFINE_PROP_STRING("initrd" , S390IPLState, initrd), |
248 | DEFINE_PROP_STRING("cmdline" , S390IPLState, cmdline), |
249 | DEFINE_PROP_STRING("firmware" , S390IPLState, firmware), |
250 | DEFINE_PROP_STRING("netboot_fw" , S390IPLState, netboot_fw), |
251 | DEFINE_PROP_BOOL("enforce_bios" , S390IPLState, enforce_bios, false), |
252 | DEFINE_PROP_BOOL("iplbext_migration" , S390IPLState, iplbext_migration, |
253 | true), |
254 | DEFINE_PROP_END_OF_LIST(), |
255 | }; |
256 | |
257 | static void (S390IPLState *ipl) |
258 | { |
259 | QemuOptsList *plist = qemu_find_opts("boot-opts" ); |
260 | QemuOpts *opts = QTAILQ_FIRST(&plist->head); |
261 | const char *tmp; |
262 | unsigned long splash_time = 0; |
263 | |
264 | if (!get_boot_device(0)) { |
265 | if (boot_menu) { |
266 | error_report("boot menu requires a bootindex to be specified for " |
267 | "the IPL device" ); |
268 | } |
269 | return; |
270 | } |
271 | |
272 | switch (ipl->iplb.pbt) { |
273 | case S390_IPL_TYPE_CCW: |
274 | /* In the absence of -boot menu, use zipl parameters */ |
275 | if (!qemu_opt_get(opts, "menu" )) { |
276 | ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL; |
277 | return; |
278 | } |
279 | break; |
280 | case S390_IPL_TYPE_QEMU_SCSI: |
281 | break; |
282 | default: |
283 | if (boot_menu) { |
284 | error_report("boot menu is not supported for this device type" ); |
285 | } |
286 | return; |
287 | } |
288 | |
289 | if (!boot_menu) { |
290 | return; |
291 | } |
292 | |
293 | ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD; |
294 | |
295 | tmp = qemu_opt_get(opts, "splash-time" ); |
296 | |
297 | if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) { |
298 | error_report("splash-time is invalid, forcing it to 0" ); |
299 | ipl->qipl.boot_menu_timeout = 0; |
300 | return; |
301 | } |
302 | |
303 | if (splash_time > 0xffffffff) { |
304 | error_report("splash-time is too large, forcing it to max value" ); |
305 | ipl->qipl.boot_menu_timeout = 0xffffffff; |
306 | return; |
307 | } |
308 | |
309 | ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time); |
310 | } |
311 | |
312 | #define CCW_DEVTYPE_NONE 0x00 |
313 | #define CCW_DEVTYPE_VIRTIO 0x01 |
314 | #define CCW_DEVTYPE_VIRTIO_NET 0x02 |
315 | #define CCW_DEVTYPE_SCSI 0x03 |
316 | #define CCW_DEVTYPE_VFIO 0x04 |
317 | |
318 | static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype) |
319 | { |
320 | CcwDevice *ccw_dev = NULL; |
321 | int tmp_dt = CCW_DEVTYPE_NONE; |
322 | |
323 | if (dev_st) { |
324 | VirtIONet *virtio_net_dev = (VirtIONet *) |
325 | object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET); |
326 | VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) |
327 | object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), |
328 | TYPE_VIRTIO_CCW_DEVICE); |
329 | VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *) |
330 | object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW); |
331 | |
332 | if (virtio_ccw_dev) { |
333 | ccw_dev = CCW_DEVICE(virtio_ccw_dev); |
334 | if (virtio_net_dev) { |
335 | tmp_dt = CCW_DEVTYPE_VIRTIO_NET; |
336 | } else { |
337 | tmp_dt = CCW_DEVTYPE_VIRTIO; |
338 | } |
339 | } else if (vfio_ccw_dev) { |
340 | ccw_dev = CCW_DEVICE(vfio_ccw_dev); |
341 | tmp_dt = CCW_DEVTYPE_VFIO; |
342 | } else { |
343 | SCSIDevice *sd = (SCSIDevice *) |
344 | object_dynamic_cast(OBJECT(dev_st), |
345 | TYPE_SCSI_DEVICE); |
346 | if (sd) { |
347 | SCSIBus *bus = scsi_bus_from_device(sd); |
348 | VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus); |
349 | VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, |
350 | vdev); |
351 | |
352 | ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw), |
353 | TYPE_CCW_DEVICE); |
354 | tmp_dt = CCW_DEVTYPE_SCSI; |
355 | } |
356 | } |
357 | } |
358 | if (devtype) { |
359 | *devtype = tmp_dt; |
360 | } |
361 | return ccw_dev; |
362 | } |
363 | |
364 | static bool s390_gen_initial_iplb(S390IPLState *ipl) |
365 | { |
366 | DeviceState *dev_st; |
367 | CcwDevice *ccw_dev = NULL; |
368 | SCSIDevice *sd; |
369 | int devtype; |
370 | |
371 | dev_st = get_boot_device(0); |
372 | if (dev_st) { |
373 | ccw_dev = s390_get_ccw_device(dev_st, &devtype); |
374 | } |
375 | |
376 | /* |
377 | * Currently allow IPL only from CCW devices. |
378 | */ |
379 | if (ccw_dev) { |
380 | switch (devtype) { |
381 | case CCW_DEVTYPE_SCSI: |
382 | sd = SCSI_DEVICE(dev_st); |
383 | ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); |
384 | ipl->iplb.blk0_len = |
385 | cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN); |
386 | ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI; |
387 | ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); |
388 | ipl->iplb.scsi.target = cpu_to_be16(sd->id); |
389 | ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); |
390 | ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); |
391 | ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; |
392 | break; |
393 | case CCW_DEVTYPE_VFIO: |
394 | ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); |
395 | ipl->iplb.pbt = S390_IPL_TYPE_CCW; |
396 | ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); |
397 | ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; |
398 | break; |
399 | case CCW_DEVTYPE_VIRTIO_NET: |
400 | ipl->netboot = true; |
401 | /* Fall through to CCW_DEVTYPE_VIRTIO case */ |
402 | case CCW_DEVTYPE_VIRTIO: |
403 | ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); |
404 | ipl->iplb.blk0_len = |
405 | cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); |
406 | ipl->iplb.pbt = S390_IPL_TYPE_CCW; |
407 | ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); |
408 | ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; |
409 | break; |
410 | } |
411 | |
412 | if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) { |
413 | ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID; |
414 | } |
415 | |
416 | return true; |
417 | } |
418 | |
419 | return false; |
420 | } |
421 | |
422 | int s390_ipl_set_loadparm(uint8_t *loadparm) |
423 | { |
424 | MachineState *machine = MACHINE(qdev_get_machine()); |
425 | char *lp = object_property_get_str(OBJECT(machine), "loadparm" , NULL); |
426 | |
427 | if (lp) { |
428 | int i; |
429 | |
430 | /* lp is an uppercase string without leading/embedded spaces */ |
431 | for (i = 0; i < 8 && lp[i]; i++) { |
432 | loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]]; |
433 | } |
434 | |
435 | if (i < 8) { |
436 | memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */ |
437 | } |
438 | |
439 | g_free(lp); |
440 | return 0; |
441 | } |
442 | |
443 | return -1; |
444 | } |
445 | |
446 | static int load_netboot_image(Error **errp) |
447 | { |
448 | S390IPLState *ipl = get_ipl_device(); |
449 | char *netboot_filename; |
450 | MemoryRegion *sysmem = get_system_memory(); |
451 | MemoryRegion *mr = NULL; |
452 | void *ram_ptr = NULL; |
453 | int img_size = -1; |
454 | |
455 | mr = memory_region_find(sysmem, 0, 1).mr; |
456 | if (!mr) { |
457 | error_setg(errp, "Failed to find memory region at address 0" ); |
458 | return -1; |
459 | } |
460 | |
461 | ram_ptr = memory_region_get_ram_ptr(mr); |
462 | if (!ram_ptr) { |
463 | error_setg(errp, "No RAM found" ); |
464 | goto unref_mr; |
465 | } |
466 | |
467 | netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw); |
468 | if (netboot_filename == NULL) { |
469 | error_setg(errp, "Could not find network bootloader '%s'" , |
470 | ipl->netboot_fw); |
471 | goto unref_mr; |
472 | } |
473 | |
474 | img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL, |
475 | &ipl->start_addr, |
476 | NULL, NULL, 1, EM_S390, 0, 0, NULL, false); |
477 | |
478 | if (img_size < 0) { |
479 | img_size = load_image_size(netboot_filename, ram_ptr, ram_size); |
480 | ipl->start_addr = KERN_IMAGE_START; |
481 | } |
482 | |
483 | if (img_size < 0) { |
484 | error_setg(errp, "Failed to load network bootloader" ); |
485 | } |
486 | |
487 | g_free(netboot_filename); |
488 | |
489 | unref_mr: |
490 | memory_region_unref(mr); |
491 | return img_size; |
492 | } |
493 | |
494 | static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb, |
495 | int virtio_id) |
496 | { |
497 | uint8_t cssid; |
498 | uint8_t ssid; |
499 | uint16_t devno; |
500 | uint16_t schid; |
501 | SubchDev *sch = NULL; |
502 | |
503 | if (iplb->pbt != S390_IPL_TYPE_CCW) { |
504 | return false; |
505 | } |
506 | |
507 | devno = be16_to_cpu(iplb->ccw.devno); |
508 | ssid = iplb->ccw.ssid & 3; |
509 | |
510 | for (schid = 0; schid < MAX_SCHID; schid++) { |
511 | for (cssid = 0; cssid < MAX_CSSID; cssid++) { |
512 | sch = css_find_subch(1, cssid, ssid, schid); |
513 | |
514 | if (sch && sch->devno == devno) { |
515 | return sch->id.cu_model == virtio_id; |
516 | } |
517 | } |
518 | } |
519 | return false; |
520 | } |
521 | |
522 | static bool is_virtio_net_device(IplParameterBlock *iplb) |
523 | { |
524 | return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET); |
525 | } |
526 | |
527 | static bool is_virtio_scsi_device(IplParameterBlock *iplb) |
528 | { |
529 | return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); |
530 | } |
531 | |
532 | void s390_ipl_update_diag308(IplParameterBlock *iplb) |
533 | { |
534 | S390IPLState *ipl = get_ipl_device(); |
535 | |
536 | ipl->iplb = *iplb; |
537 | ipl->iplb_valid = true; |
538 | ipl->netboot = is_virtio_net_device(iplb); |
539 | } |
540 | |
541 | IplParameterBlock *s390_ipl_get_iplb(void) |
542 | { |
543 | S390IPLState *ipl = get_ipl_device(); |
544 | |
545 | if (!ipl->iplb_valid) { |
546 | return NULL; |
547 | } |
548 | return &ipl->iplb; |
549 | } |
550 | |
551 | void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) |
552 | { |
553 | S390IPLState *ipl = get_ipl_device(); |
554 | |
555 | if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { |
556 | /* use CPU 0 for full resets */ |
557 | ipl->reset_cpu_index = 0; |
558 | } else { |
559 | ipl->reset_cpu_index = cs->cpu_index; |
560 | } |
561 | ipl->reset_type = reset_type; |
562 | |
563 | if (reset_type == S390_RESET_REIPL && |
564 | ipl->iplb_valid && |
565 | !ipl->netboot && |
566 | ipl->iplb.pbt == S390_IPL_TYPE_CCW && |
567 | is_virtio_scsi_device(&ipl->iplb)) { |
568 | CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0), NULL); |
569 | |
570 | if (ccw_dev && |
571 | cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno && |
572 | (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) { |
573 | /* |
574 | * this is the original boot device's SCSI |
575 | * so restore IPL parameter info from it |
576 | */ |
577 | ipl->iplb_valid = s390_gen_initial_iplb(ipl); |
578 | } |
579 | } |
580 | if (reset_type == S390_RESET_MODIFIED_CLEAR || |
581 | reset_type == S390_RESET_LOAD_NORMAL) { |
582 | /* ignore -no-reboot, send no event */ |
583 | qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); |
584 | } else { |
585 | qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); |
586 | } |
587 | /* as this is triggered by a CPU, make sure to exit the loop */ |
588 | if (tcg_enabled()) { |
589 | cpu_loop_exit(cs); |
590 | } |
591 | } |
592 | |
593 | void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type) |
594 | { |
595 | S390IPLState *ipl = get_ipl_device(); |
596 | |
597 | *cs = qemu_get_cpu(ipl->reset_cpu_index); |
598 | if (!*cs) { |
599 | /* use any CPU */ |
600 | *cs = first_cpu; |
601 | } |
602 | *reset_type = ipl->reset_type; |
603 | } |
604 | |
605 | void s390_ipl_clear_reset_request(void) |
606 | { |
607 | S390IPLState *ipl = get_ipl_device(); |
608 | |
609 | ipl->reset_type = S390_RESET_EXTERNAL; |
610 | /* use CPU 0 for full resets */ |
611 | ipl->reset_cpu_index = 0; |
612 | } |
613 | |
614 | static void s390_ipl_prepare_qipl(S390CPU *cpu) |
615 | { |
616 | S390IPLState *ipl = get_ipl_device(); |
617 | uint8_t *addr; |
618 | uint64_t len = 4096; |
619 | |
620 | addr = cpu_physical_memory_map(cpu->env.psa, &len, 1); |
621 | if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) { |
622 | error_report("Cannot set QEMU IPL parameters" ); |
623 | return; |
624 | } |
625 | memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters)); |
626 | cpu_physical_memory_unmap(addr, len, 1, len); |
627 | } |
628 | |
629 | void s390_ipl_prepare_cpu(S390CPU *cpu) |
630 | { |
631 | S390IPLState *ipl = get_ipl_device(); |
632 | Error *err = NULL; |
633 | |
634 | cpu->env.psw.addr = ipl->start_addr; |
635 | cpu->env.psw.mask = IPL_PSW_MASK; |
636 | |
637 | if (!ipl->kernel || ipl->iplb_valid) { |
638 | cpu->env.psw.addr = ipl->bios_start_addr; |
639 | if (!ipl->iplb_valid) { |
640 | ipl->iplb_valid = s390_gen_initial_iplb(ipl); |
641 | } |
642 | } |
643 | if (ipl->netboot) { |
644 | if (load_netboot_image(&err) < 0) { |
645 | error_report_err(err); |
646 | exit(1); |
647 | } |
648 | ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); |
649 | } |
650 | s390_ipl_set_boot_menu(ipl); |
651 | s390_ipl_prepare_qipl(cpu); |
652 | } |
653 | |
654 | static void s390_ipl_reset(DeviceState *dev) |
655 | { |
656 | S390IPLState *ipl = S390_IPL(dev); |
657 | |
658 | if (ipl->reset_type != S390_RESET_REIPL) { |
659 | ipl->iplb_valid = false; |
660 | memset(&ipl->iplb, 0, sizeof(IplParameterBlock)); |
661 | } |
662 | } |
663 | |
664 | static void s390_ipl_class_init(ObjectClass *klass, void *data) |
665 | { |
666 | DeviceClass *dc = DEVICE_CLASS(klass); |
667 | |
668 | dc->realize = s390_ipl_realize; |
669 | dc->props = s390_ipl_properties; |
670 | dc->reset = s390_ipl_reset; |
671 | dc->vmsd = &vmstate_ipl; |
672 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
673 | /* Reason: Loads the ROMs and thus can only be used one time - internally */ |
674 | dc->user_creatable = false; |
675 | } |
676 | |
677 | static const TypeInfo s390_ipl_info = { |
678 | .class_init = s390_ipl_class_init, |
679 | .parent = TYPE_DEVICE, |
680 | .name = TYPE_S390_IPL, |
681 | .instance_size = sizeof(S390IPLState), |
682 | }; |
683 | |
684 | static void s390_ipl_register_types(void) |
685 | { |
686 | type_register_static(&s390_ipl_info); |
687 | } |
688 | |
689 | type_init(s390_ipl_register_types) |
690 | |