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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" |
a8d25326 | 15 | #include "qemu-common.h" |
da34e65c | 16 | #include "qapi/error.h" |
71e8a915 | 17 | #include "sysemu/reset.h" |
54d31236 | 18 | #include "sysemu/runstate.h" |
e674a49a | 19 | #include "sysemu/sysemu.h" |
14a48c1d | 20 | #include "sysemu/tcg.h" |
e674a49a CB |
21 | #include "cpu.h" |
22 | #include "elf.h" | |
23 | #include "hw/loader.h" | |
a27bd6c7 | 24 | #include "hw/qdev-properties.h" |
bd1badf4 | 25 | #include "hw/boards.h" |
ba1509c0 | 26 | #include "hw/s390x/virtio-ccw.h" |
44445d86 | 27 | #include "hw/s390x/vfio-ccw.h" |
ba1509c0 | 28 | #include "hw/s390x/css.h" |
bd1badf4 | 29 | #include "hw/s390x/ebcdic.h" |
df75a4e2 | 30 | #include "ipl.h" |
f38b5b7f | 31 | #include "qemu/error-report.h" |
26b2a2a4 CW |
32 | #include "qemu/config-file.h" |
33 | #include "qemu/cutils.h" | |
34 | #include "qemu/option.h" | |
a30fb811 | 35 | #include "exec/exec-all.h" |
e674a49a CB |
36 | |
37 | #define KERN_IMAGE_START 0x010000UL | |
acd7ef83 | 38 | #define LINUX_MAGIC_ADDR 0x010008UL |
e674a49a CB |
39 | #define KERN_PARM_AREA 0x010480UL |
40 | #define INITRD_START 0x800000UL | |
41 | #define INITRD_PARM_START 0x010408UL | |
e674a49a | 42 | #define PARMFILE_START 0x001000UL |
e674a49a CB |
43 | #define ZIPL_IMAGE_START 0x009000UL |
44 | #define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64) | |
45 | ||
04ca4b92 AY |
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 | ||
2e13fbe4 FZ |
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() | |
04ca4b92 AY |
73 | }, |
74 | .subsections = (const VMStateDescription*[]) { | |
75 | &vmstate_iplb_extended, | |
76 | NULL | |
2e13fbe4 FZ |
77 | } |
78 | }; | |
79 | ||
80 | static const VMStateDescription vmstate_ipl = { | |
81 | .name = "ipl", | |
82 | .version_id = 0, | |
83 | .minimum_version_id = 0, | |
84 | .fields = (VMStateField[]) { | |
bb099546 DH |
85 | VMSTATE_UINT64(compat_start_addr, S390IPLState), |
86 | VMSTATE_UINT64(compat_bios_start_addr, S390IPLState), | |
2e13fbe4 FZ |
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 | }; | |
e674a49a | 95 | |
feacc6c2 DH |
96 | static S390IPLState *get_ipl_device(void) |
97 | { | |
98 | return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL)); | |
99 | } | |
100 | ||
d884c86d TH |
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 | ||
04fccf10 | 111 | static void s390_ipl_realize(DeviceState *dev, Error **errp) |
e674a49a CB |
112 | { |
113 | S390IPLState *ipl = S390_IPL(dev); | |
acd7ef83 CB |
114 | uint32_t *ipl_psw; |
115 | uint64_t pentry; | |
116 | char *magic; | |
376827d4 | 117 | int kernel_size; |
e6da780d | 118 | Error *err = NULL; |
e674a49a | 119 | |
f0180f91 FZ |
120 | int bios_size; |
121 | char *bios_filename; | |
e674a49a | 122 | |
f0180f91 FZ |
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) { | |
d884c86d TH |
128 | uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL; |
129 | ||
e674a49a | 130 | if (bios_name == NULL) { |
d0249ce5 | 131 | bios_name = ipl->firmware; |
e674a49a CB |
132 | } |
133 | ||
134 | bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name); | |
1f7de853 | 135 | if (bios_filename == NULL) { |
e6da780d | 136 | error_setg(&err, "could not find stage1 bootloader"); |
8f04e88e | 137 | goto error; |
1f7de853 DD |
138 | } |
139 | ||
4366e1db LM |
140 | bios_size = load_elf(bios_filename, NULL, |
141 | bios_translate_addr, &fwbase, | |
6cdda0ff | 142 | &ipl->bios_start_addr, NULL, NULL, NULL, 1, |
7ef295ea | 143 | EM_S390, 0, 0); |
d884c86d TH |
144 | if (bios_size > 0) { |
145 | /* Adjust ELF start address to final location */ | |
146 | ipl->bios_start_addr += fwbase; | |
147 | } else { | |
f35c1f66 | 148 | /* Try to load non-ELF file */ |
33259956 AG |
149 | bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START, |
150 | 4096); | |
f0180f91 | 151 | ipl->bios_start_addr = ZIPL_IMAGE_START; |
33259956 | 152 | } |
e674a49a CB |
153 | g_free(bios_filename); |
154 | ||
376827d4 | 155 | if (bios_size == -1) { |
e6da780d | 156 | error_setg(&err, "could not load bootloader '%s'", bios_name); |
8f04e88e | 157 | goto error; |
e674a49a | 158 | } |
7691993c | 159 | |
f0180f91 FZ |
160 | /* default boot target is the bios */ |
161 | ipl->start_addr = ipl->bios_start_addr; | |
e674a49a | 162 | } |
7691993c | 163 | |
f0180f91 | 164 | if (ipl->kernel) { |
4366e1db LM |
165 | kernel_size = load_elf(ipl->kernel, NULL, NULL, NULL, |
166 | &pentry, NULL, | |
6cdda0ff | 167 | NULL, NULL, 1, EM_S390, 0, 0); |
f0180f91 FZ |
168 | if (kernel_size < 0) { |
169 | kernel_size = load_image_targphys(ipl->kernel, 0, ram_size); | |
acd7ef83 CB |
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 */ | |
0f0f8b61 | 175 | magic = rom_ptr(LINUX_MAGIC_ADDR, 6); |
acd7ef83 CB |
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 */ | |
0f0f8b61 | 180 | ipl_psw = rom_ptr(4, 4); |
acd7ef83 | 181 | if (ipl_psw) { |
b6c2dbd7 | 182 | pentry = be32_to_cpu(*ipl_psw) & PSW_MASK_SHORT_ADDR; |
acd7ef83 CB |
183 | } else { |
184 | error_setg(&err, "Could not get IPL PSW"); | |
185 | goto error; | |
186 | } | |
187 | } | |
e674a49a | 188 | } |
f0180f91 FZ |
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) { | |
0f0f8b61 | 196 | char *parm_area = rom_ptr(KERN_PARM_AREA, strlen(ipl->cmdline) + 1); |
f0180f91 FZ |
197 | ipl->start_addr = KERN_IMAGE_START; |
198 | /* Overwrite parameters in the kernel image, which are "rom" */ | |
0f0f8b61 TH |
199 | if (parm_area) { |
200 | strcpy(parm_area, ipl->cmdline); | |
201 | } | |
f0180f91 FZ |
202 | } else { |
203 | ipl->start_addr = pentry; | |
e674a49a CB |
204 | } |
205 | ||
f0180f91 FZ |
206 | if (ipl->initrd) { |
207 | ram_addr_t initrd_offset; | |
208 | int initrd_size; | |
0f0f8b61 | 209 | uint64_t *romptr; |
f0180f91 FZ |
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) { | |
e6da780d | 218 | error_setg(&err, "could not load initrd '%s'", ipl->initrd); |
8f04e88e | 219 | goto error; |
f0180f91 | 220 | } |
e674a49a | 221 | |
f0180f91 FZ |
222 | /* |
223 | * we have to overwrite values in the kernel image, | |
224 | * which are "rom" | |
225 | */ | |
0f0f8b61 TH |
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 | } | |
f0180f91 FZ |
231 | } |
232 | } | |
bb099546 DH |
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; | |
cd45c506 DH |
240 | /* |
241 | * Because this Device is not on any bus in the qbus tree (it is | |
242 | * not a sysbus device and it's not on some other bus like a PCI | |
243 | * bus) it will not be automatically reset by the 'reset the | |
244 | * sysbus' hook registered by vl.c like most devices. So we must | |
245 | * manually register a reset hook for it. | |
246 | * TODO: there should be a better way to do this. | |
247 | */ | |
248 | qemu_register_reset(resettable_cold_reset_fn, dev); | |
8f04e88e | 249 | error: |
e6da780d | 250 | error_propagate(errp, err); |
e674a49a CB |
251 | } |
252 | ||
253 | static Property s390_ipl_properties[] = { | |
254 | DEFINE_PROP_STRING("kernel", S390IPLState, kernel), | |
255 | DEFINE_PROP_STRING("initrd", S390IPLState, initrd), | |
256 | DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline), | |
d0249ce5 | 257 | DEFINE_PROP_STRING("firmware", S390IPLState, firmware), |
5f31ade0 | 258 | DEFINE_PROP_STRING("netboot_fw", S390IPLState, netboot_fw), |
f0180f91 | 259 | DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false), |
04ca4b92 AY |
260 | DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration, |
261 | true), | |
e674a49a CB |
262 | DEFINE_PROP_END_OF_LIST(), |
263 | }; | |
264 | ||
26b2a2a4 CW |
265 | static void s390_ipl_set_boot_menu(S390IPLState *ipl) |
266 | { | |
267 | QemuOptsList *plist = qemu_find_opts("boot-opts"); | |
268 | QemuOpts *opts = QTAILQ_FIRST(&plist->head); | |
26b2a2a4 CW |
269 | const char *tmp; |
270 | unsigned long splash_time = 0; | |
271 | ||
272 | if (!get_boot_device(0)) { | |
273 | if (boot_menu) { | |
274 | error_report("boot menu requires a bootindex to be specified for " | |
56000869 | 275 | "the IPL device"); |
26b2a2a4 CW |
276 | } |
277 | return; | |
278 | } | |
279 | ||
280 | switch (ipl->iplb.pbt) { | |
281 | case S390_IPL_TYPE_CCW: | |
53b310ce CW |
282 | /* In the absence of -boot menu, use zipl parameters */ |
283 | if (!qemu_opt_get(opts, "menu")) { | |
5d45a332 | 284 | ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_ZIPL; |
53b310ce CW |
285 | return; |
286 | } | |
26b2a2a4 | 287 | break; |
ffb4a1c8 CW |
288 | case S390_IPL_TYPE_QEMU_SCSI: |
289 | break; | |
26b2a2a4 | 290 | default: |
56000869 CW |
291 | if (boot_menu) { |
292 | error_report("boot menu is not supported for this device type"); | |
293 | } | |
26b2a2a4 CW |
294 | return; |
295 | } | |
296 | ||
297 | if (!boot_menu) { | |
298 | return; | |
299 | } | |
300 | ||
5d45a332 | 301 | ipl->qipl.qipl_flags |= QIPL_FLAG_BM_OPTS_CMD; |
26b2a2a4 CW |
302 | |
303 | tmp = qemu_opt_get(opts, "splash-time"); | |
304 | ||
305 | if (tmp && qemu_strtoul(tmp, NULL, 10, &splash_time)) { | |
56000869 | 306 | error_report("splash-time is invalid, forcing it to 0"); |
5d45a332 | 307 | ipl->qipl.boot_menu_timeout = 0; |
26b2a2a4 CW |
308 | return; |
309 | } | |
310 | ||
311 | if (splash_time > 0xffffffff) { | |
56000869 | 312 | error_report("splash-time is too large, forcing it to max value"); |
5d45a332 | 313 | ipl->qipl.boot_menu_timeout = 0xffffffff; |
26b2a2a4 CW |
314 | return; |
315 | } | |
316 | ||
5d45a332 | 317 | ipl->qipl.boot_menu_timeout = cpu_to_be32(splash_time); |
26b2a2a4 CW |
318 | } |
319 | ||
44445d86 JH |
320 | #define CCW_DEVTYPE_NONE 0x00 |
321 | #define CCW_DEVTYPE_VIRTIO 0x01 | |
322 | #define CCW_DEVTYPE_VIRTIO_NET 0x02 | |
323 | #define CCW_DEVTYPE_SCSI 0x03 | |
324 | #define CCW_DEVTYPE_VFIO 0x04 | |
325 | ||
326 | static CcwDevice *s390_get_ccw_device(DeviceState *dev_st, int *devtype) | |
11ef6d50 VM |
327 | { |
328 | CcwDevice *ccw_dev = NULL; | |
44445d86 | 329 | int tmp_dt = CCW_DEVTYPE_NONE; |
11ef6d50 VM |
330 | |
331 | if (dev_st) { | |
44445d86 JH |
332 | VirtIONet *virtio_net_dev = (VirtIONet *) |
333 | object_dynamic_cast(OBJECT(dev_st), TYPE_VIRTIO_NET); | |
11ef6d50 VM |
334 | VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *) |
335 | object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent), | |
336 | TYPE_VIRTIO_CCW_DEVICE); | |
44445d86 JH |
337 | VFIOCCWDevice *vfio_ccw_dev = (VFIOCCWDevice *) |
338 | object_dynamic_cast(OBJECT(dev_st), TYPE_VFIO_CCW); | |
339 | ||
11ef6d50 VM |
340 | if (virtio_ccw_dev) { |
341 | ccw_dev = CCW_DEVICE(virtio_ccw_dev); | |
44445d86 JH |
342 | if (virtio_net_dev) { |
343 | tmp_dt = CCW_DEVTYPE_VIRTIO_NET; | |
344 | } else { | |
345 | tmp_dt = CCW_DEVTYPE_VIRTIO; | |
346 | } | |
347 | } else if (vfio_ccw_dev) { | |
348 | ccw_dev = CCW_DEVICE(vfio_ccw_dev); | |
349 | tmp_dt = CCW_DEVTYPE_VFIO; | |
11ef6d50 VM |
350 | } else { |
351 | SCSIDevice *sd = (SCSIDevice *) | |
352 | object_dynamic_cast(OBJECT(dev_st), | |
353 | TYPE_SCSI_DEVICE); | |
354 | if (sd) { | |
355 | SCSIBus *bus = scsi_bus_from_device(sd); | |
356 | VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus); | |
357 | VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, | |
358 | vdev); | |
359 | ||
360 | ccw_dev = (CcwDevice *)object_dynamic_cast(OBJECT(scsi_ccw), | |
361 | TYPE_CCW_DEVICE); | |
44445d86 | 362 | tmp_dt = CCW_DEVTYPE_SCSI; |
11ef6d50 VM |
363 | } |
364 | } | |
365 | } | |
44445d86 JH |
366 | if (devtype) { |
367 | *devtype = tmp_dt; | |
368 | } | |
11ef6d50 VM |
369 | return ccw_dev; |
370 | } | |
371 | ||
010d45d2 | 372 | static bool s390_gen_initial_iplb(S390IPLState *ipl) |
df75a4e2 FZ |
373 | { |
374 | DeviceState *dev_st; | |
11ef6d50 | 375 | CcwDevice *ccw_dev = NULL; |
44445d86 JH |
376 | SCSIDevice *sd; |
377 | int devtype; | |
df75a4e2 | 378 | |
df75a4e2 FZ |
379 | dev_st = get_boot_device(0); |
380 | if (dev_st) { | |
44445d86 | 381 | ccw_dev = s390_get_ccw_device(dev_st, &devtype); |
11ef6d50 VM |
382 | } |
383 | ||
384 | /* | |
385 | * Currently allow IPL only from CCW devices. | |
386 | */ | |
387 | if (ccw_dev) { | |
44445d86 JH |
388 | switch (devtype) { |
389 | case CCW_DEVTYPE_SCSI: | |
216bdd27 | 390 | sd = SCSI_DEVICE(dev_st); |
e468b673 AY |
391 | ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN); |
392 | ipl->iplb.blk0_len = | |
393 | cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN); | |
394 | ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI; | |
395 | ipl->iplb.scsi.lun = cpu_to_be32(sd->lun); | |
396 | ipl->iplb.scsi.target = cpu_to_be16(sd->id); | |
397 | ipl->iplb.scsi.channel = cpu_to_be16(sd->channel); | |
b804e8a6 JL |
398 | ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno); |
399 | ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3; | |
44445d86 JH |
400 | break; |
401 | case CCW_DEVTYPE_VFIO: | |
402 | ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); | |
403 | ipl->iplb.pbt = S390_IPL_TYPE_CCW; | |
404 | ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); | |
405 | ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; | |
406 | break; | |
407 | case CCW_DEVTYPE_VIRTIO_NET: | |
408 | ipl->netboot = true; | |
409 | /* Fall through to CCW_DEVTYPE_VIRTIO case */ | |
410 | case CCW_DEVTYPE_VIRTIO: | |
11ef6d50 VM |
411 | ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN); |
412 | ipl->iplb.blk0_len = | |
413 | cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN); | |
414 | ipl->iplb.pbt = S390_IPL_TYPE_CCW; | |
415 | ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno); | |
416 | ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3; | |
44445d86 | 417 | break; |
bd1badf4 FA |
418 | } |
419 | ||
420 | if (!s390_ipl_set_loadparm(ipl->iplb.loadparm)) { | |
421 | ipl->iplb.flags |= DIAG308_FLAGS_LP_VALID; | |
df75a4e2 | 422 | } |
11ef6d50 | 423 | |
bd1badf4 | 424 | return true; |
df75a4e2 FZ |
425 | } |
426 | ||
010d45d2 | 427 | return false; |
df75a4e2 FZ |
428 | } |
429 | ||
bd1badf4 FA |
430 | int s390_ipl_set_loadparm(uint8_t *loadparm) |
431 | { | |
432 | MachineState *machine = MACHINE(qdev_get_machine()); | |
433 | char *lp = object_property_get_str(OBJECT(machine), "loadparm", NULL); | |
434 | ||
435 | if (lp) { | |
436 | int i; | |
437 | ||
438 | /* lp is an uppercase string without leading/embedded spaces */ | |
439 | for (i = 0; i < 8 && lp[i]; i++) { | |
440 | loadparm[i] = ascii2ebcdic[(uint8_t) lp[i]]; | |
441 | } | |
442 | ||
074afe60 CW |
443 | if (i < 8) { |
444 | memset(loadparm + i, 0x40, 8 - i); /* fill with EBCDIC spaces */ | |
445 | } | |
446 | ||
bd1badf4 FA |
447 | g_free(lp); |
448 | return 0; | |
449 | } | |
450 | ||
451 | return -1; | |
452 | } | |
453 | ||
f38b5b7f FA |
454 | static int load_netboot_image(Error **errp) |
455 | { | |
456 | S390IPLState *ipl = get_ipl_device(); | |
457 | char *netboot_filename; | |
458 | MemoryRegion *sysmem = get_system_memory(); | |
459 | MemoryRegion *mr = NULL; | |
460 | void *ram_ptr = NULL; | |
461 | int img_size = -1; | |
462 | ||
463 | mr = memory_region_find(sysmem, 0, 1).mr; | |
464 | if (!mr) { | |
465 | error_setg(errp, "Failed to find memory region at address 0"); | |
466 | return -1; | |
467 | } | |
468 | ||
469 | ram_ptr = memory_region_get_ram_ptr(mr); | |
470 | if (!ram_ptr) { | |
471 | error_setg(errp, "No RAM found"); | |
472 | goto unref_mr; | |
473 | } | |
474 | ||
475 | netboot_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, ipl->netboot_fw); | |
476 | if (netboot_filename == NULL) { | |
c575fa67 TH |
477 | error_setg(errp, "Could not find network bootloader '%s'", |
478 | ipl->netboot_fw); | |
f38b5b7f FA |
479 | goto unref_mr; |
480 | } | |
481 | ||
4366e1db LM |
482 | img_size = load_elf_ram(netboot_filename, NULL, NULL, NULL, |
483 | &ipl->start_addr, | |
6cdda0ff AM |
484 | NULL, NULL, NULL, 1, EM_S390, 0, 0, NULL, |
485 | false); | |
f38b5b7f FA |
486 | |
487 | if (img_size < 0) { | |
488 | img_size = load_image_size(netboot_filename, ram_ptr, ram_size); | |
489 | ipl->start_addr = KERN_IMAGE_START; | |
490 | } | |
491 | ||
492 | if (img_size < 0) { | |
493 | error_setg(errp, "Failed to load network bootloader"); | |
494 | } | |
495 | ||
496 | g_free(netboot_filename); | |
497 | ||
498 | unref_mr: | |
499 | memory_region_unref(mr); | |
500 | return img_size; | |
501 | } | |
502 | ||
789b5a40 VM |
503 | static bool is_virtio_ccw_device_of_type(IplParameterBlock *iplb, |
504 | int virtio_id) | |
f38b5b7f FA |
505 | { |
506 | uint8_t cssid; | |
507 | uint8_t ssid; | |
508 | uint16_t devno; | |
509 | uint16_t schid; | |
510 | SubchDev *sch = NULL; | |
511 | ||
512 | if (iplb->pbt != S390_IPL_TYPE_CCW) { | |
513 | return false; | |
514 | } | |
515 | ||
516 | devno = be16_to_cpu(iplb->ccw.devno); | |
517 | ssid = iplb->ccw.ssid & 3; | |
518 | ||
519 | for (schid = 0; schid < MAX_SCHID; schid++) { | |
520 | for (cssid = 0; cssid < MAX_CSSID; cssid++) { | |
521 | sch = css_find_subch(1, cssid, ssid, schid); | |
522 | ||
523 | if (sch && sch->devno == devno) { | |
789b5a40 | 524 | return sch->id.cu_model == virtio_id; |
f38b5b7f FA |
525 | } |
526 | } | |
527 | } | |
528 | return false; | |
529 | } | |
530 | ||
789b5a40 VM |
531 | static bool is_virtio_net_device(IplParameterBlock *iplb) |
532 | { | |
533 | return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_NET); | |
534 | } | |
535 | ||
536 | static bool is_virtio_scsi_device(IplParameterBlock *iplb) | |
537 | { | |
538 | return is_virtio_ccw_device_of_type(iplb, VIRTIO_ID_SCSI); | |
539 | } | |
540 | ||
feacc6c2 | 541 | void s390_ipl_update_diag308(IplParameterBlock *iplb) |
df75a4e2 | 542 | { |
feacc6c2 | 543 | S390IPLState *ipl = get_ipl_device(); |
df75a4e2 | 544 | |
feacc6c2 DH |
545 | ipl->iplb = *iplb; |
546 | ipl->iplb_valid = true; | |
f38b5b7f | 547 | ipl->netboot = is_virtio_net_device(iplb); |
df75a4e2 FZ |
548 | } |
549 | ||
550 | IplParameterBlock *s390_ipl_get_iplb(void) | |
551 | { | |
feacc6c2 | 552 | S390IPLState *ipl = get_ipl_device(); |
df75a4e2 | 553 | |
feacc6c2 | 554 | if (!ipl->iplb_valid) { |
df75a4e2 FZ |
555 | return NULL; |
556 | } | |
557 | return &ipl->iplb; | |
558 | } | |
559 | ||
a30fb811 | 560 | void s390_ipl_reset_request(CPUState *cs, enum s390_reset reset_type) |
e91e972c | 561 | { |
feacc6c2 | 562 | S390IPLState *ipl = get_ipl_device(); |
e91e972c | 563 | |
a30fb811 DH |
564 | if (reset_type == S390_RESET_EXTERNAL || reset_type == S390_RESET_REIPL) { |
565 | /* use CPU 0 for full resets */ | |
566 | ipl->reset_cpu_index = 0; | |
567 | } else { | |
568 | ipl->reset_cpu_index = cs->cpu_index; | |
569 | } | |
570 | ipl->reset_type = reset_type; | |
571 | ||
572 | if (reset_type == S390_RESET_REIPL && | |
573 | ipl->iplb_valid && | |
789b5a40 VM |
574 | !ipl->netboot && |
575 | ipl->iplb.pbt == S390_IPL_TYPE_CCW && | |
576 | is_virtio_scsi_device(&ipl->iplb)) { | |
44445d86 | 577 | CcwDevice *ccw_dev = s390_get_ccw_device(get_boot_device(0), NULL); |
789b5a40 VM |
578 | |
579 | if (ccw_dev && | |
580 | cpu_to_be16(ccw_dev->sch->devno) == ipl->iplb.ccw.devno && | |
581 | (ccw_dev->sch->ssid & 3) == ipl->iplb.ccw.ssid) { | |
582 | /* | |
583 | * this is the original boot device's SCSI | |
584 | * so restore IPL parameter info from it | |
585 | */ | |
586 | ipl->iplb_valid = s390_gen_initial_iplb(ipl); | |
587 | } | |
588 | } | |
76ed4b18 CB |
589 | if (reset_type == S390_RESET_MODIFIED_CLEAR || |
590 | reset_type == S390_RESET_LOAD_NORMAL) { | |
591 | /* ignore -no-reboot, send no event */ | |
592 | qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); | |
593 | } else { | |
594 | qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); | |
595 | } | |
a30fb811 DH |
596 | /* as this is triggered by a CPU, make sure to exit the loop */ |
597 | if (tcg_enabled()) { | |
598 | cpu_loop_exit(cs); | |
599 | } | |
600 | } | |
601 | ||
602 | void s390_ipl_get_reset_request(CPUState **cs, enum s390_reset *reset_type) | |
603 | { | |
604 | S390IPLState *ipl = get_ipl_device(); | |
605 | ||
606 | *cs = qemu_get_cpu(ipl->reset_cpu_index); | |
607 | if (!*cs) { | |
608 | /* use any CPU */ | |
609 | *cs = first_cpu; | |
610 | } | |
611 | *reset_type = ipl->reset_type; | |
612 | } | |
613 | ||
614 | void s390_ipl_clear_reset_request(void) | |
615 | { | |
616 | S390IPLState *ipl = get_ipl_device(); | |
617 | ||
618 | ipl->reset_type = S390_RESET_EXTERNAL; | |
619 | /* use CPU 0 for full resets */ | |
620 | ipl->reset_cpu_index = 0; | |
e91e972c FZ |
621 | } |
622 | ||
118ee80f CW |
623 | static void s390_ipl_prepare_qipl(S390CPU *cpu) |
624 | { | |
625 | S390IPLState *ipl = get_ipl_device(); | |
626 | uint8_t *addr; | |
627 | uint64_t len = 4096; | |
628 | ||
85eb7c18 | 629 | addr = cpu_physical_memory_map(cpu->env.psa, &len, true); |
118ee80f CW |
630 | if (!addr || len < QIPL_ADDRESS + sizeof(QemuIplParameters)) { |
631 | error_report("Cannot set QEMU IPL parameters"); | |
632 | return; | |
633 | } | |
634 | memcpy(addr + QIPL_ADDRESS, &ipl->qipl, sizeof(QemuIplParameters)); | |
635 | cpu_physical_memory_unmap(addr, len, 1, len); | |
636 | } | |
637 | ||
db3b2566 DH |
638 | void s390_ipl_prepare_cpu(S390CPU *cpu) |
639 | { | |
640 | S390IPLState *ipl = get_ipl_device(); | |
f38b5b7f | 641 | Error *err = NULL; |
db3b2566 DH |
642 | |
643 | cpu->env.psw.addr = ipl->start_addr; | |
644 | cpu->env.psw.mask = IPL_PSW_MASK; | |
645 | ||
646 | if (!ipl->kernel || ipl->iplb_valid) { | |
647 | cpu->env.psw.addr = ipl->bios_start_addr; | |
010d45d2 AY |
648 | if (!ipl->iplb_valid) { |
649 | ipl->iplb_valid = s390_gen_initial_iplb(ipl); | |
650 | } | |
db3b2566 | 651 | } |
f38b5b7f FA |
652 | if (ipl->netboot) { |
653 | if (load_netboot_image(&err) < 0) { | |
654 | error_report_err(err); | |
c575fa67 | 655 | exit(1); |
f38b5b7f | 656 | } |
118ee80f | 657 | ipl->qipl.netboot_start_addr = cpu_to_be64(ipl->start_addr); |
f38b5b7f | 658 | } |
26b2a2a4 | 659 | s390_ipl_set_boot_menu(ipl); |
118ee80f | 660 | s390_ipl_prepare_qipl(cpu); |
db3b2566 DH |
661 | } |
662 | ||
e674a49a CB |
663 | static void s390_ipl_reset(DeviceState *dev) |
664 | { | |
665 | S390IPLState *ipl = S390_IPL(dev); | |
ba1509c0 | 666 | |
a30fb811 | 667 | if (ipl->reset_type != S390_RESET_REIPL) { |
e91e972c | 668 | ipl->iplb_valid = false; |
6aed9589 | 669 | memset(&ipl->iplb, 0, sizeof(IplParameterBlock)); |
e91e972c | 670 | } |
e674a49a CB |
671 | } |
672 | ||
673 | static void s390_ipl_class_init(ObjectClass *klass, void *data) | |
674 | { | |
675 | DeviceClass *dc = DEVICE_CLASS(klass); | |
e674a49a | 676 | |
04fccf10 | 677 | dc->realize = s390_ipl_realize; |
4f67d30b | 678 | device_class_set_props(dc, s390_ipl_properties); |
e674a49a | 679 | dc->reset = s390_ipl_reset; |
2e13fbe4 | 680 | dc->vmsd = &vmstate_ipl; |
b4ab4572 | 681 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
0d4fa499 TH |
682 | /* Reason: Loads the ROMs and thus can only be used one time - internally */ |
683 | dc->user_creatable = false; | |
e674a49a CB |
684 | } |
685 | ||
49973ebc | 686 | static const TypeInfo s390_ipl_info = { |
e674a49a | 687 | .class_init = s390_ipl_class_init, |
04fccf10 DH |
688 | .parent = TYPE_DEVICE, |
689 | .name = TYPE_S390_IPL, | |
e674a49a CB |
690 | .instance_size = sizeof(S390IPLState), |
691 | }; | |
692 | ||
693 | static void s390_ipl_register_types(void) | |
694 | { | |
695 | type_register_static(&s390_ipl_info); | |
696 | } | |
697 | ||
698 | type_init(s390_ipl_register_types) |