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Commit | Line | Data |
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e674a49a CB |
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 | ||
9615495a | 14 | #include "qemu/osdep.h" |
da34e65c | 15 | #include "qapi/error.h" |
e674a49a CB |
16 | #include "sysemu/sysemu.h" |
17 | #include "cpu.h" | |
18 | #include "elf.h" | |
19 | #include "hw/loader.h" | |
bd1badf4 | 20 | #include "hw/boards.h" |
ba1509c0 | 21 | #include "hw/s390x/virtio-ccw.h" |
44445d86 | 22 | #include "hw/s390x/vfio-ccw.h" |
ba1509c0 | 23 | #include "hw/s390x/css.h" |
bd1badf4 | 24 | #include "hw/s390x/ebcdic.h" |
df75a4e2 | 25 | #include "ipl.h" |
f38b5b7f | 26 | #include "qemu/error-report.h" |
26b2a2a4 CW |
27 | #include "qemu/config-file.h" |
28 | #include "qemu/cutils.h" | |
29 | #include "qemu/option.h" | |
a30fb811 | 30 | #include "exec/exec-all.h" |
e674a49a CB |
31 | |
32 | #define KERN_IMAGE_START 0x010000UL | |
acd7ef83 | 33 | #define LINUX_MAGIC_ADDR 0x010008UL |
e674a49a CB |
34 | #define KERN_PARM_AREA 0x010480UL |
35 | #define INITRD_START 0x800000UL | |
36 | #define INITRD_PARM_START 0x010408UL | |
e674a49a | 37 | #define PARMFILE_START 0x001000UL |
e674a49a CB |
38 | #define ZIPL_IMAGE_START 0x009000UL |
39 | #define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64) | |
40 | ||
04ca4b92 AY |
41 | static bool iplb_extended_needed(void *opaque) |
42 | { | |
43 | S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL)); | |
44 | ||
45 | return ipl->iplbext_migration; | |
46 | } | |
47 | ||
48 | static const VMStateDescription vmstate_iplb_extended = { | |
49 | .name = "ipl/iplb_extended", | |
50 | .version_id = 0, | |
51 | .minimum_version_id = 0, | |
52 | .needed = iplb_extended_needed, | |
53 | .fields = (VMStateField[]) { | |
54 | VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200), | |
55 | VMSTATE_END_OF_LIST() | |
56 | } | |
57 | }; | |
58 | ||
2e13fbe4 FZ |
59 | static const VMStateDescription vmstate_iplb = { |
60 | .name = "ipl/iplb", | |
61 | .version_id = 0, | |
62 | .minimum_version_id = 0, | |
63 | .fields = (VMStateField[]) { | |
64 | VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110), | |
65 | VMSTATE_UINT16(devno, IplParameterBlock), | |
66 | VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88), | |
67 | VMSTATE_END_OF_LIST() | |
04ca4b92 AY |
68 | }, |
69 | .subsections = (const VMStateDescription*[]) { | |
70 | &vmstate_iplb_extended, | |
71 | NULL | |
2e13fbe4 FZ |
72 | } |
73 | }; | |
74 | ||
75 | static const VMStateDescription vmstate_ipl = { | |
76 | .name = "ipl", | |
77 | .version_id = 0, | |
78 | .minimum_version_id = 0, | |
79 | .fields = (VMStateField[]) { | |
bb099546 DH |
80 | VMSTATE_UINT64(compat_start_addr, S390IPLState), |
81 | VMSTATE_UINT64(compat_bios_start_addr, S390IPLState), | |
2e13fbe4 FZ |
82 | VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock), |
83 | VMSTATE_BOOL(iplb_valid, S390IPLState), | |
84 | VMSTATE_UINT8(cssid, S390IPLState), | |
85 | VMSTATE_UINT8(ssid, S390IPLState), | |
86 | VMSTATE_UINT16(devno, S390IPLState), | |
87 | VMSTATE_END_OF_LIST() | |
88 | } | |
89 | }; | |
e674a49a | 90 | |
feacc6c2 DH |
91 | static S390IPLState *get_ipl_device(void) |
92 | { | |
93 | return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL)); | |
94 | } | |
95 | ||
d884c86d TH |
96 | static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr) |
97 | { | |
98 | uint64_t dstaddr = *(uint64_t *) opaque; | |
99 | /* | |
100 | * Assuming that our s390-ccw.img was linked for starting at address 0, | |
101 | * we can simply add the destination address for the final location | |
102 | */ | |
103 | return srcaddr + dstaddr; | |
104 | } | |
105 | ||
04fccf10 | 106 | static void s390_ipl_realize(DeviceState *dev, Error **errp) |
e674a49a CB |
107 | { |
108 | S390IPLState *ipl = S390_IPL(dev); | |
acd7ef83 CB |
109 | uint32_t *ipl_psw; |
110 | uint64_t pentry; | |
111 | char *magic; | |
376827d4 | 112 | int kernel_size; |
e6da780d | 113 | Error *err = NULL; |
e674a49a | 114 | |
f0180f91 FZ |
115 | int bios_size; |
116 | char *bios_filename; | |
e674a49a | 117 | |
f0180f91 FZ |
118 | /* |
119 | * Always load the bios if it was enforced, | |
120 | * even if an external kernel has been defined. | |
121 | */ | |
122 | if (!ipl->kernel || ipl->enforce_bios) { | |
d884c86d TH |
123 | uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL; |
124 | ||
e674a49a | 125 | if (bios_name == NULL) { |
d0249ce5 | 126 | bios_name = ipl->firmware; |
e674a49a CB |
127 | } |
128 | ||
129 | bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
1f7de853 | 130 | if (bios_filename == NULL) { |
e6da780d | 131 | error_setg(&err, "could not find stage1 bootloader"); |
8f04e88e | 132 | goto error; |
1f7de853 DD |
133 | } |
134 | ||
4366e1db LM |
135 | bios_size = load_elf(bios_filename, NULL, |
136 | bios_translate_addr, &fwbase, | |
d884c86d | 137 | &ipl->bios_start_addr, NULL, NULL, 1, |
7ef295ea | 138 | EM_S390, 0, 0); |
d884c86d TH |
139 | if (bios_size > 0) { |
140 | /* Adjust ELF start address to final location */ | |
141 | ipl->bios_start_addr += fwbase; | |
142 | } else { | |
f35c1f66 | 143 | /* Try to load non-ELF file */ |
33259956 AG |
144 | bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, |
145 | 4096); | |
f0180f91 | 146 | ipl->bios_start_addr = ZIPL_IMAGE_START; |
33259956 | 147 | } |
e674a49a CB |
148 | g_free(bios_filename); |
149 | ||
376827d4 | 150 | if (bios_size == -1) { |
e6da780d | 151 | error_setg(&err, "could not load bootloader '%s'", bios_name); |
8f04e88e | 152 | goto error; |
e674a49a | 153 | } |
7691993c | 154 | |
f0180f91 FZ |
155 | /* default boot target is the bios */ |
156 | ipl->start_addr = ipl->bios_start_addr; | |
e674a49a | 157 | } |
7691993c | 158 | |
f0180f91 | 159 | if (ipl->kernel) { |
4366e1db LM |
160 | kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, |
161 | &pentry, NULL, | |
7ef295ea | 162 | NULL, 1, EM_S390, 0, 0); |
f0180f91 FZ |
163 | if (kernel_size < 0) { |
164 | kernel_size = load_image_targphys(ipl->kernel, 0, ram_size); | |
acd7ef83 CB |
165 | if (kernel_size < 0) { |
166 | error_setg(&err, "could not load kernel '%s'", ipl->kernel); | |
167 | goto error; | |
168 | } | |
169 | /* if this is Linux use KERN_IMAGE_START */ | |
0f0f8b61 | 170 | magic = rom_ptr(LINUX_MAGIC_ADDR, 6); |
acd7ef83 CB |
171 | if (magic && !memcmp(magic, "S390EP", 6)) { |
172 | pentry = KERN_IMAGE_START; | |
173 | } else { | |
174 | /* if not Linux load the address of the (short) IPL PSW */ | |
0f0f8b61 | 175 | ipl_psw = rom_ptr(4, 4); |
acd7ef83 CB |
176 | if (ipl_psw) { |
177 | pentry = be32_to_cpu(*ipl_psw) & 0x7fffffffUL; | |
178 | } else { | |
179 | error_setg(&err, "Could not get IPL PSW"); | |
180 | goto error; | |
181 | } | |
182 | } | |
e674a49a | 183 | } |
f0180f91 FZ |
184 | /* |
185 | * Is it a Linux kernel (starting at 0x10000)? If yes, we fill in the | |
186 | * kernel parameters here as well. Note: For old kernels (up to 3.2) | |
187 | * we can not rely on the ELF entry point - it was 0x800 (the SALIPL | |
188 | * loader) and it won't work. For this case we force it to 0x10000, too. | |
189 | */ | |
190 | if (pentry == KERN_IMAGE_START || pentry == 0x800) { | |
0f0f8b61 | 191 | char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1); |
f0180f91 FZ |
192 | ipl->start_addr = KERN_IMAGE_START; |
193 | /* Overwrite parameters in the kernel image, which are "rom" */ | |
0f0f8b61 TH |
194 | if (parm_area) { |
195 | strcpy(parm_area, ipl->cmdline); | |
196 | } | |
f0180f91 FZ |
197 | } else { |
198 | ipl->start_addr = pentry; | |
e674a49a CB |
199 | } |
200 | ||
f0180f91 FZ |
201 | if (ipl->initrd) { |
202 | ram_addr_t initrd_offset; | |
203 | int initrd_size; | |
0f0f8b61 | 204 | uint64_t *romptr; |
f0180f91 FZ |
205 | |
206 | initrd_offset = INITRD_START; | |
207 | while (kernel_size + 0x100000 > initrd_offset) { | |
208 | initrd_offset += 0x100000; | |
209 | } | |
210 | initrd_size = load_image_targphys(ipl->initrd, initrd_offset, | |
211 | ram_size - initrd_offset); | |
212 | if (initrd_size == -1) { | |
e6da780d | 213 | error_setg(&err, "could not load initrd '%s'", ipl->initrd); |
8f04e88e | 214 | goto error; |
f0180f91 | 215 | } |
e674a49a | 216 | |
f0180f91 FZ |
217 | /* |
218 | * we have to overwrite values in the kernel image, | |
219 | * which are "rom" | |
220 | */ | |
0f0f8b61 TH |
221 | romptr = rom_ptr(INITRD_PARM_START, 16); |
222 | if (romptr) { | |
223 | stq_p(romptr, initrd_offset); | |
224 | stq_p(romptr + 1, initrd_size); | |
225 | } | |
f0180f91 FZ |
226 | } |
227 | } | |
bb099546 DH |
228 | /* |
229 | * Don't ever use the migrated values, they could come from a different | |
230 | * BIOS and therefore don't work. But still migrate the values, so | |
231 | * QEMUs relying on it don't break. | |
232 | */ | |
233 | ipl->compat_start_addr = ipl->start_addr; | |
234 | ipl->compat_bios_start_addr = ipl->bios_start_addr; | |
04fccf10 | 235 | qemu_register_reset(qdev_reset_all_fn, dev); |
8f04e88e | 236 | error: |
e6da780d | 237 | error_propagate(errp, err); |
e674a49a CB |
238 | } |
239 | ||
240 | static Property s390_ipl_properties[] = { | |
241 | DEFINE_PROP_STRING("kernel", S390IPLState, kernel), | |
242 | DEFINE_PROP_STRING("initrd", S390IPLState, initrd), | |
243 | DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline), | |
d0249ce5 | 244 | DEFINE_PROP_STRING("firmware", S390IPLState, firmware), |
5f31ade0 | 245 | DEFINE_PROP_STRING("netboot_fw", S390IPLState, netboot_fw), |
f0180f91 | 246 | DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false), |
04ca4b92 AY |
247 | DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration, |
248 | true), | |
e674a49a CB |
249 | DEFINE_PROP_END_OF_LIST(), |
250 | }; | |
251 | ||
26b2a2a4 CW |
252 | static void s390_ipl_set_boot_menu(S390IPLState *ipl) |
253 | { | |
254 | QemuOptsList *plist = qemu_find_opts("boot-opts"); | |
255 | QemuOpts *opts = QTAILQ_FIRST(&plist->head); | |
26b2a2a4 CW |
256 | const char *tmp; |
257 | unsigned long splash_time = 0; | |
258 | ||
259 | if (!get_boot_device(0)) { | |
260 | if (boot_menu) { | |
261 | error_report("boot menu requires a bootindex to be specified for " | |
56000869 | 262 | "the IPL device"); |
26b2a2a4 CW |
263 | } |
264 | return; | |
265 | } | |
266 | ||
267 | switch (ipl->iplb.pbt) { | |
268 | case S390_IPL_TYPE_CCW: | |
53b310ce CW |
269 | /* In the absence of -boot menu, use zipl parameters */ |
270 | if (!qemu_opt_get(opts, "menu")) { | |
5d45a332 | 271 | ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL; |
53b310ce CW |
272 | return; |
273 | } | |
26b2a2a4 | 274 | break; |
ffb4a1c8 CW |
275 | case S390_IPL_TYPE_QEMU_SCSI: |
276 | break; | |
26b2a2a4 | 277 | default: |
56000869 CW |
278 | if (boot_menu) { |
279 | error_report("boot menu is not supported for this device type"); | |
280 | } | |
26b2a2a4 CW |
281 | return; |
282 | } | |
283 | ||
284 | if (!boot_menu) { | |
285 | return; | |
286 | } | |
287 | ||
5d45a332 | 288 | ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD; |
26b2a2a4 CW |
289 | |
290 | tmp = qemu_opt_get(opts, "splash-time"); | |
291 | ||
292 | if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) { | |
56000869 | 293 | error_report("splash-time is invalid, forcing it to 0"); |
5d45a332 | 294 | ipl->qipl.boot_menu_timeout = 0; |
26b2a2a4 CW |
295 | return; |
296 | } | |
297 | ||
298 | if (splash_time > 0xffffffff) { | |
56000869 | 299 | error_report("splash-time is too large, forcing it to max value"); |
5d45a332 | 300 | ipl->qipl.boot_menu_timeout = 0xffffffff; |
26b2a2a4 CW |
301 | return; |
302 | } | |
303 | ||
5d45a332 | 304 | ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time); |
26b2a2a4 CW |
305 | } |
306 | ||
44445d86 JH |
307 | #define CCW_DEVTYPE_NONE 0x00 |
308 | #define CCW_DEVTYPE_VIRTIO 0x01 | |
309 | #define CCW_DEVTYPE_VIRTIO_NET 0x02 | |
310 | #define CCW_DEVTYPE_SCSI 0x03 | |
311 | #define CCW_DEVTYPE_VFIO 0x04 | |
312 | ||
313 | static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype) | |
11ef6d50 VM |
314 | { |
315 | CcwDevice *ccw_dev = NULL; | |
44445d86 | 316 | int tmp_dt = CCW_DEVTYPE_NONE; |
11ef6d50 VM |
317 | |
318 | if (dev_st) { | |
44445d86 JH |
319 | VirtIONet *virtio_net_dev = (VirtIONet *) |
320 | object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET); | |
11ef6d50 VM |
321 | VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) |
322 | object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), | |
323 | TYPE_VIRTIO_CCW_DEVICE); | |
44445d86 JH |
324 | VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *) |
325 | object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW); | |
326 | ||
11ef6d50 VM |
327 | if (virtio_ccw_dev) { |
328 | ccw_dev = CCW_DEVICE(virtio_ccw_dev); | |
44445d86 JH |
329 | if (virtio_net_dev) { |
330 | tmp_dt = CCW_DEVTYPE_VIRTIO_NET; | |
331 | } else { | |
332 | tmp_dt = CCW_DEVTYPE_VIRTIO; | |
333 | } | |
334 | } else if (vfio_ccw_dev) { | |
335 | ccw_dev = CCW_DEVICE(vfio_ccw_dev); | |
336 | tmp_dt = CCW_DEVTYPE_VFIO; | |
11ef6d50 VM |
337 | } else { |
338 | SCSIDevice *sd = (SCSIDevice *) | |
339 | object_dynamic_cast(OBJECT(dev_st), | |
340 | TYPE_SCSI_DEVICE); | |
341 | if (sd) { | |
342 | SCSIBus *bus = scsi_bus_from_device(sd); | |
343 | VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus); | |
344 | VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, | |
345 | vdev); | |
346 | ||
347 | ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw), | |
348 | TYPE_CCW_DEVICE); | |
44445d86 | 349 | tmp_dt = CCW_DEVTYPE_SCSI; |
11ef6d50 VM |
350 | } |
351 | } | |
352 | } | |
44445d86 JH |
353 | if (devtype) { |
354 | *devtype = tmp_dt; | |
355 | } | |
11ef6d50 VM |
356 | return ccw_dev; |
357 | } | |
358 | ||
010d45d2 | 359 | static bool s390_gen_initial_iplb(S390IPLState *ipl) |
df75a4e2 FZ |
360 | { |
361 | DeviceState *dev_st; | |
11ef6d50 | 362 | CcwDevice *ccw_dev = NULL; |
44445d86 JH |
363 | SCSIDevice *sd; |
364 | int devtype; | |
df75a4e2 | 365 | |
df75a4e2 FZ |
366 | dev_st = get_boot_device(0); |
367 | if (dev_st) { | |
44445d86 | 368 | ccw_dev = s390_get_ccw_device(dev_st, &devtype); |
11ef6d50 VM |
369 | } |
370 | ||
371 | /* | |
372 | * Currently allow IPL only from CCW devices. | |
373 | */ | |
374 | if (ccw_dev) { | |
44445d86 JH |
375 | switch (devtype) { |
376 | case CCW_DEVTYPE_SCSI: | |
377 | sd = (SCSIDevice *) object_dynamic_cast(OBJECT(dev_st), | |
378 | TYPE_SCSI_DEVICE); | |
e468b673 AY |
379 | ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); |
380 | ipl->iplb.blk0_len = | |
381 | cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN); | |
382 | ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI; | |
383 | ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); | |
384 | ipl->iplb.scsi.target = cpu_to_be16(sd->id); | |
385 | ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); | |
b804e8a6 JL |
386 | ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); |
387 | ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; | |
44445d86 JH |
388 | break; |
389 | case CCW_DEVTYPE_VFIO: | |
390 | ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); | |
391 | ipl->iplb.pbt = S390_IPL_TYPE_CCW; | |
392 | ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); | |
393 | ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; | |
394 | break; | |
395 | case CCW_DEVTYPE_VIRTIO_NET: | |
396 | ipl->netboot = true; | |
397 | /* Fall through to CCW_DEVTYPE_VIRTIO case */ | |
398 | case CCW_DEVTYPE_VIRTIO: | |
11ef6d50 VM |
399 | ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); |
400 | ipl->iplb.blk0_len = | |
401 | cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); | |
402 | ipl->iplb.pbt = S390_IPL_TYPE_CCW; | |
403 | ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); | |
404 | ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; | |
44445d86 | 405 | break; |
bd1badf4 FA |
406 | } |
407 | ||
408 | if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) { | |
409 | ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID; | |
df75a4e2 | 410 | } |
11ef6d50 | 411 | |
bd1badf4 | 412 | return true; |
df75a4e2 FZ |
413 | } |
414 | ||
010d45d2 | 415 | return false; |
df75a4e2 FZ |
416 | } |
417 | ||
bd1badf4 FA |
418 | int s390_ipl_set_loadparm(uint8_t *loadparm) |
419 | { | |
420 | MachineState *machine = MACHINE(qdev_get_machine()); | |
421 | char *lp = object_property_get_str(OBJECT(machine), "loadparm", NULL); | |
422 | ||
423 | if (lp) { | |
424 | int i; | |
425 | ||
426 | /* lp is an uppercase string without leading/embedded spaces */ | |
427 | for (i = 0; i < 8 && lp[i]; i++) { | |
428 | loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]]; | |
429 | } | |
430 | ||
074afe60 CW |
431 | if (i < 8) { |
432 | memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */ | |
433 | } | |
434 | ||
bd1badf4 FA |
435 | g_free(lp); |
436 | return 0; | |
437 | } | |
438 | ||
439 | return -1; | |
440 | } | |
441 | ||
f38b5b7f FA |
442 | static int load_netboot_image(Error **errp) |
443 | { | |
444 | S390IPLState *ipl = get_ipl_device(); | |
445 | char *netboot_filename; | |
446 | MemoryRegion *sysmem = get_system_memory(); | |
447 | MemoryRegion *mr = NULL; | |
448 | void *ram_ptr = NULL; | |
449 | int img_size = -1; | |
450 | ||
451 | mr = memory_region_find(sysmem, 0, 1).mr; | |
452 | if (!mr) { | |
453 | error_setg(errp, "Failed to find memory region at address 0"); | |
454 | return -1; | |
455 | } | |
456 | ||
457 | ram_ptr = memory_region_get_ram_ptr(mr); | |
458 | if (!ram_ptr) { | |
459 | error_setg(errp, "No RAM found"); | |
460 | goto unref_mr; | |
461 | } | |
462 | ||
463 | netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw); | |
464 | if (netboot_filename == NULL) { | |
c575fa67 TH |
465 | error_setg(errp, "Could not find network bootloader '%s'", |
466 | ipl->netboot_fw); | |
f38b5b7f FA |
467 | goto unref_mr; |
468 | } | |
469 | ||
4366e1db LM |
470 | img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL, |
471 | &ipl->start_addr, | |
f38b5b7f FA |
472 | NULL, NULL, 1, EM_S390, 0, 0, NULL, false); |
473 | ||
474 | if (img_size < 0) { | |
475 | img_size = load_image_size(netboot_filename, ram_ptr, ram_size); | |
476 | ipl->start_addr = KERN_IMAGE_START; | |
477 | } | |
478 | ||
479 | if (img_size < 0) { | |
480 | error_setg(errp, "Failed to load network bootloader"); | |
481 | } | |
482 | ||
483 | g_free(netboot_filename); | |
484 | ||
485 | unref_mr: | |
486 | memory_region_unref(mr); | |
487 | return img_size; | |
488 | } | |
489 | ||
789b5a40 VM |
490 | static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb, |
491 | int virtio_id) | |
f38b5b7f FA |
492 | { |
493 | uint8_t cssid; | |
494 | uint8_t ssid; | |
495 | uint16_t devno; | |
496 | uint16_t schid; | |
497 | SubchDev *sch = NULL; | |
498 | ||
499 | if (iplb->pbt != S390_IPL_TYPE_CCW) { | |
500 | return false; | |
501 | } | |
502 | ||
503 | devno = be16_to_cpu(iplb->ccw.devno); | |
504 | ssid = iplb->ccw.ssid & 3; | |
505 | ||
506 | for (schid = 0; schid < MAX_SCHID; schid++) { | |
507 | for (cssid = 0; cssid < MAX_CSSID; cssid++) { | |
508 | sch = css_find_subch(1, cssid, ssid, schid); | |
509 | ||
510 | if (sch && sch->devno == devno) { | |
789b5a40 | 511 | return sch->id.cu_model == virtio_id; |
f38b5b7f FA |
512 | } |
513 | } | |
514 | } | |
515 | return false; | |
516 | } | |
517 | ||
789b5a40 VM |
518 | static bool is_virtio_net_device(IplParameterBlock *iplb) |
519 | { | |
520 | return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET); | |
521 | } | |
522 | ||
523 | static bool is_virtio_scsi_device(IplParameterBlock *iplb) | |
524 | { | |
525 | return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); | |
526 | } | |
527 | ||
feacc6c2 | 528 | void s390_ipl_update_diag308(IplParameterBlock *iplb) |
df75a4e2 | 529 | { |
feacc6c2 | 530 | S390IPLState *ipl = get_ipl_device(); |
df75a4e2 | 531 | |
feacc6c2 DH |
532 | ipl->iplb = *iplb; |
533 | ipl->iplb_valid = true; | |
f38b5b7f | 534 | ipl->netboot = is_virtio_net_device(iplb); |
df75a4e2 FZ |
535 | } |
536 | ||
537 | IplParameterBlock *s390_ipl_get_iplb(void) | |
538 | { | |
feacc6c2 | 539 | S390IPLState *ipl = get_ipl_device(); |
df75a4e2 | 540 | |
feacc6c2 | 541 | if (!ipl->iplb_valid) { |
df75a4e2 FZ |
542 | return NULL; |
543 | } | |
544 | return &ipl->iplb; | |
545 | } | |
546 | ||
a30fb811 | 547 | void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) |
e91e972c | 548 | { |
feacc6c2 | 549 | S390IPLState *ipl = get_ipl_device(); |
e91e972c | 550 | |
a30fb811 DH |
551 | if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { |
552 | /* use CPU 0 for full resets */ | |
553 | ipl->reset_cpu_index = 0; | |
554 | } else { | |
555 | ipl->reset_cpu_index = cs->cpu_index; | |
556 | } | |
557 | ipl->reset_type = reset_type; | |
558 | ||
559 | if (reset_type == S390_RESET_REIPL && | |
560 | ipl->iplb_valid && | |
789b5a40 VM |
561 | !ipl->netboot && |
562 | ipl->iplb.pbt == S390_IPL_TYPE_CCW && | |
563 | is_virtio_scsi_device(&ipl->iplb)) { | |
44445d86 | 564 | CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0), NULL); |
789b5a40 VM |
565 | |
566 | if (ccw_dev && | |
567 | cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno && | |
568 | (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) { | |
569 | /* | |
570 | * this is the original boot device's SCSI | |
571 | * so restore IPL parameter info from it | |
572 | */ | |
573 | ipl->iplb_valid = s390_gen_initial_iplb(ipl); | |
574 | } | |
575 | } | |
76ed4b18 CB |
576 | if (reset_type == S390_RESET_MODIFIED_CLEAR || |
577 | reset_type == S390_RESET_LOAD_NORMAL) { | |
578 | /* ignore -no-reboot, send no event */ | |
579 | qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); | |
580 | } else { | |
581 | qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); | |
582 | } | |
a30fb811 DH |
583 | /* as this is triggered by a CPU, make sure to exit the loop */ |
584 | if (tcg_enabled()) { | |
585 | cpu_loop_exit(cs); | |
586 | } | |
587 | } | |
588 | ||
589 | void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type) | |
590 | { | |
591 | S390IPLState *ipl = get_ipl_device(); | |
592 | ||
593 | *cs = qemu_get_cpu(ipl->reset_cpu_index); | |
594 | if (!*cs) { | |
595 | /* use any CPU */ | |
596 | *cs = first_cpu; | |
597 | } | |
598 | *reset_type = ipl->reset_type; | |
599 | } | |
600 | ||
601 | void s390_ipl_clear_reset_request(void) | |
602 | { | |
603 | S390IPLState *ipl = get_ipl_device(); | |
604 | ||
605 | ipl->reset_type = S390_RESET_EXTERNAL; | |
606 | /* use CPU 0 for full resets */ | |
607 | ipl->reset_cpu_index = 0; | |
e91e972c FZ |
608 | } |
609 | ||
118ee80f CW |
610 | static void s390_ipl_prepare_qipl(S390CPU *cpu) |
611 | { | |
612 | S390IPLState *ipl = get_ipl_device(); | |
613 | uint8_t *addr; | |
614 | uint64_t len = 4096; | |
615 | ||
616 | addr = cpu_physical_memory_map(cpu->env.psa, &len, 1); | |
617 | if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) { | |
618 | error_report("Cannot set QEMU IPL parameters"); | |
619 | return; | |
620 | } | |
621 | memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters)); | |
622 | cpu_physical_memory_unmap(addr, len, 1, len); | |
623 | } | |
624 | ||
db3b2566 DH |
625 | void s390_ipl_prepare_cpu(S390CPU *cpu) |
626 | { | |
627 | S390IPLState *ipl = get_ipl_device(); | |
f38b5b7f | 628 | Error *err = NULL; |
db3b2566 DH |
629 | |
630 | cpu->env.psw.addr = ipl->start_addr; | |
631 | cpu->env.psw.mask = IPL_PSW_MASK; | |
632 | ||
633 | if (!ipl->kernel || ipl->iplb_valid) { | |
634 | cpu->env.psw.addr = ipl->bios_start_addr; | |
010d45d2 AY |
635 | if (!ipl->iplb_valid) { |
636 | ipl->iplb_valid = s390_gen_initial_iplb(ipl); | |
637 | } | |
db3b2566 | 638 | } |
f38b5b7f FA |
639 | if (ipl->netboot) { |
640 | if (load_netboot_image(&err) < 0) { | |
641 | error_report_err(err); | |
c575fa67 | 642 | exit(1); |
f38b5b7f | 643 | } |
118ee80f | 644 | ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); |
f38b5b7f | 645 | } |
26b2a2a4 | 646 | s390_ipl_set_boot_menu(ipl); |
118ee80f | 647 | s390_ipl_prepare_qipl(cpu); |
db3b2566 DH |
648 | } |
649 | ||
e674a49a CB |
650 | static void s390_ipl_reset(DeviceState *dev) |
651 | { | |
652 | S390IPLState *ipl = S390_IPL(dev); | |
ba1509c0 | 653 | |
a30fb811 | 654 | if (ipl->reset_type != S390_RESET_REIPL) { |
e91e972c | 655 | ipl->iplb_valid = false; |
6aed9589 | 656 | memset(&ipl->iplb, 0, sizeof(IplParameterBlock)); |
e91e972c | 657 | } |
e674a49a CB |
658 | } |
659 | ||
660 | static void s390_ipl_class_init(ObjectClass *klass, void *data) | |
661 | { | |
662 | DeviceClass *dc = DEVICE_CLASS(klass); | |
e674a49a | 663 | |
04fccf10 | 664 | dc->realize = s390_ipl_realize; |
e674a49a CB |
665 | dc->props = s390_ipl_properties; |
666 | dc->reset = s390_ipl_reset; | |
2e13fbe4 | 667 | dc->vmsd = &vmstate_ipl; |
b4ab4572 | 668 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
0d4fa499 TH |
669 | /* Reason: Loads the ROMs and thus can only be used one time - internally */ |
670 | dc->user_creatable = false; | |
e674a49a CB |
671 | } |
672 | ||
49973ebc | 673 | static const TypeInfo s390_ipl_info = { |
e674a49a | 674 | .class_init = s390_ipl_class_init, |
04fccf10 DH |
675 | .parent = TYPE_DEVICE, |
676 | .name = TYPE_S390_IPL, | |
e674a49a CB |
677 | .instance_size = sizeof(S390IPLState), |
678 | }; | |
679 | ||
680 | static void s390_ipl_register_types(void) | |
681 | { | |
682 | type_register_static(&s390_ipl_info); | |
683 | } | |
684 | ||
685 | type_init(s390_ipl_register_types) |