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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/s390x/virtio-ccw.h"
21#include "hw/s390x/css.h"
22#include "ipl.h"
23
24#define KERN_IMAGE_START 0x010000UL
25#define KERN_PARM_AREA 0x010480UL
26#define INITRD_START 0x800000UL
27#define INITRD_PARM_START 0x010408UL
28#define INITRD_PARM_SIZE 0x010410UL
29#define PARMFILE_START 0x001000UL
30#define ZIPL_IMAGE_START 0x009000UL
31#define IPL_PSW_MASK (PSW_MASK_32 | PSW_MASK_64)
32
33static bool iplb_extended_needed(void *opaque)
34{
35 S390IPLState *ipl = S390_IPL(object_resolve_path(TYPE_S390_IPL, NULL));
36
37 return ipl->iplbext_migration;
38}
39
40static const VMStateDescription vmstate_iplb_extended = {
41 .name = "ipl/iplb_extended",
42 .version_id = 0,
43 .minimum_version_id = 0,
44 .needed = iplb_extended_needed,
45 .fields = (VMStateField[]) {
46 VMSTATE_UINT8_ARRAY(reserved_ext, IplParameterBlock, 4096 - 200),
47 VMSTATE_END_OF_LIST()
48 }
49};
50
51static const VMStateDescription vmstate_iplb = {
52 .name = "ipl/iplb",
53 .version_id = 0,
54 .minimum_version_id = 0,
55 .fields = (VMStateField[]) {
56 VMSTATE_UINT8_ARRAY(reserved1, IplParameterBlock, 110),
57 VMSTATE_UINT16(devno, IplParameterBlock),
58 VMSTATE_UINT8_ARRAY(reserved2, IplParameterBlock, 88),
59 VMSTATE_END_OF_LIST()
60 },
61 .subsections = (const VMStateDescription*[]) {
62 &vmstate_iplb_extended,
63 NULL
64 }
65};
66
67static const VMStateDescription vmstate_ipl = {
68 .name = "ipl",
69 .version_id = 0,
70 .minimum_version_id = 0,
71 .fields = (VMStateField[]) {
72 VMSTATE_UINT64(compat_start_addr, S390IPLState),
73 VMSTATE_UINT64(compat_bios_start_addr, S390IPLState),
74 VMSTATE_STRUCT(iplb, S390IPLState, 0, vmstate_iplb, IplParameterBlock),
75 VMSTATE_BOOL(iplb_valid, S390IPLState),
76 VMSTATE_UINT8(cssid, S390IPLState),
77 VMSTATE_UINT8(ssid, S390IPLState),
78 VMSTATE_UINT16(devno, S390IPLState),
79 VMSTATE_END_OF_LIST()
80 }
81};
82
83static S390IPLState *get_ipl_device(void)
84{
85 return S390_IPL(object_resolve_path_type("", TYPE_S390_IPL, NULL));
86}
87
88static uint64_t bios_translate_addr(void *opaque, uint64_t srcaddr)
89{
90 uint64_t dstaddr = *(uint64_t *) opaque;
91
92
93
94
95 return srcaddr + dstaddr;
96}
97
98static void s390_ipl_realize(DeviceState *dev, Error **errp)
99{
100 S390IPLState *ipl = S390_IPL(dev);
101 uint64_t pentry = KERN_IMAGE_START;
102 int kernel_size;
103 Error *err = NULL;
104
105 int bios_size;
106 char *bios_filename;
107
108
109
110
111
112 if (!ipl->kernel || ipl->enforce_bios) {
113 uint64_t fwbase = (MIN(ram_size, 0x80000000U) - 0x200000) & ~0xffffUL;
114
115 if (bios_name == NULL) {
116 bios_name = ipl->firmware;
117 }
118
119 bios_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, bios_name);
120 if (bios_filename == NULL) {
121 error_setg(&err, "could not find stage1 bootloader");
122 goto error;
123 }
124
125 bios_size = load_elf(bios_filename, bios_translate_addr, &fwbase,
126 &ipl->bios_start_addr, NULL, NULL, 1,
127 EM_S390, 0, 0);
128 if (bios_size > 0) {
129
130 ipl->bios_start_addr += fwbase;
131 } else {
132
133 bios_size = load_image_targphys(bios_filename, ZIPL_IMAGE_START,
134 4096);
135 ipl->bios_start_addr = ZIPL_IMAGE_START;
136 }
137 g_free(bios_filename);
138
139 if (bios_size == -1) {
140 error_setg(&err, "could not load bootloader '%s'", bios_name);
141 goto error;
142 }
143
144
145 ipl->start_addr = ipl->bios_start_addr;
146 }
147
148 if (ipl->kernel) {
149 kernel_size = load_elf(ipl->kernel, NULL, NULL, &pentry, NULL,
150 NULL, 1, EM_S390, 0, 0);
151 if (kernel_size < 0) {
152 kernel_size = load_image_targphys(ipl->kernel, 0, ram_size);
153 }
154 if (kernel_size < 0) {
155 error_setg(&err, "could not load kernel '%s'", ipl->kernel);
156 goto error;
157 }
158
159
160
161
162
163
164 if (pentry == KERN_IMAGE_START || pentry == 0x800) {
165 ipl->start_addr = KERN_IMAGE_START;
166
167 strcpy(rom_ptr(KERN_PARM_AREA), ipl->cmdline);
168 } else {
169 ipl->start_addr = pentry;
170 }
171
172 if (ipl->initrd) {
173 ram_addr_t initrd_offset;
174 int initrd_size;
175
176 initrd_offset = INITRD_START;
177 while (kernel_size + 0x100000 > initrd_offset) {
178 initrd_offset += 0x100000;
179 }
180 initrd_size = load_image_targphys(ipl->initrd, initrd_offset,
181 ram_size - initrd_offset);
182 if (initrd_size == -1) {
183 error_setg(&err, "could not load initrd '%s'", ipl->initrd);
184 goto error;
185 }
186
187
188
189
190
191 stq_p(rom_ptr(INITRD_PARM_START), initrd_offset);
192 stq_p(rom_ptr(INITRD_PARM_SIZE), initrd_size);
193 }
194 }
195
196
197
198
199
200 ipl->compat_start_addr = ipl->start_addr;
201 ipl->compat_bios_start_addr = ipl->bios_start_addr;
202 qemu_register_reset(qdev_reset_all_fn, dev);
203error:
204 error_propagate(errp, err);
205}
206
207static Property s390_ipl_properties[] = {
208 DEFINE_PROP_STRING("kernel", S390IPLState, kernel),
209 DEFINE_PROP_STRING("initrd", S390IPLState, initrd),
210 DEFINE_PROP_STRING("cmdline", S390IPLState, cmdline),
211 DEFINE_PROP_STRING("firmware", S390IPLState, firmware),
212 DEFINE_PROP_BOOL("enforce_bios", S390IPLState, enforce_bios, false),
213 DEFINE_PROP_BOOL("iplbext_migration", S390IPLState, iplbext_migration,
214 true),
215 DEFINE_PROP_END_OF_LIST(),
216};
217
218static bool s390_gen_initial_iplb(S390IPLState *ipl)
219{
220 DeviceState *dev_st;
221
222 dev_st = get_boot_device(0);
223 if (dev_st) {
224 VirtioCcwDevice *virtio_ccw_dev = (VirtioCcwDevice *)
225 object_dynamic_cast(OBJECT(qdev_get_parent_bus(dev_st)->parent),
226 TYPE_VIRTIO_CCW_DEVICE);
227 SCSIDevice *sd = (SCSIDevice *) object_dynamic_cast(OBJECT(dev_st),
228 TYPE_SCSI_DEVICE);
229 if (virtio_ccw_dev) {
230 CcwDevice *ccw_dev = CCW_DEVICE(virtio_ccw_dev);
231
232 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_CCW_LEN);
233 ipl->iplb.blk0_len =
234 cpu_to_be32(S390_IPLB_MIN_CCW_LEN - S390_IPLB_HEADER_LEN);
235 ipl->iplb.pbt = S390_IPL_TYPE_CCW;
236 ipl->iplb.ccw.devno = cpu_to_be16(ccw_dev->sch->devno);
237 ipl->iplb.ccw.ssid = ccw_dev->sch->ssid & 3;
238 return true;
239 } else if (sd) {
240 SCSIBus *bus = scsi_bus_from_device(sd);
241 VirtIOSCSI *vdev = container_of(bus, VirtIOSCSI, bus);
242 VirtIOSCSICcw *scsi_ccw = container_of(vdev, VirtIOSCSICcw, vdev);
243 CcwDevice *ccw_dev = CCW_DEVICE(scsi_ccw);
244
245 ipl->iplb.len = cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN);
246 ipl->iplb.blk0_len =
247 cpu_to_be32(S390_IPLB_MIN_QEMU_SCSI_LEN - S390_IPLB_HEADER_LEN);
248 ipl->iplb.pbt = S390_IPL_TYPE_QEMU_SCSI;
249 ipl->iplb.scsi.lun = cpu_to_be32(sd->lun);
250 ipl->iplb.scsi.target = cpu_to_be16(sd->id);
251 ipl->iplb.scsi.channel = cpu_to_be16(sd->channel);
252 ipl->iplb.scsi.devno = cpu_to_be16(ccw_dev->sch->devno);
253 ipl->iplb.scsi.ssid = ccw_dev->sch->ssid & 3;
254 return true;
255 }
256 }
257
258 return false;
259}
260
261void s390_ipl_update_diag308(IplParameterBlock *iplb)
262{
263 S390IPLState *ipl = get_ipl_device();
264
265 ipl->iplb = *iplb;
266 ipl->iplb_valid = true;
267}
268
269IplParameterBlock *s390_ipl_get_iplb(void)
270{
271 S390IPLState *ipl = get_ipl_device();
272
273 if (!ipl->iplb_valid) {
274 return NULL;
275 }
276 return &ipl->iplb;
277}
278
279void s390_reipl_request(void)
280{
281 S390IPLState *ipl = get_ipl_device();
282
283 ipl->reipl_requested = true;
284 qemu_system_reset_request();
285}
286
287void s390_ipl_prepare_cpu(S390CPU *cpu)
288{
289 S390IPLState *ipl = get_ipl_device();
290
291 cpu->env.psw.addr = ipl->start_addr;
292 cpu->env.psw.mask = IPL_PSW_MASK;
293
294 if (!ipl->kernel || ipl->iplb_valid) {
295 cpu->env.psw.addr = ipl->bios_start_addr;
296 if (!ipl->iplb_valid) {
297 ipl->iplb_valid = s390_gen_initial_iplb(ipl);
298 }
299 }
300}
301
302static void s390_ipl_reset(DeviceState *dev)
303{
304 S390IPLState *ipl = S390_IPL(dev);
305
306 if (!ipl->reipl_requested) {
307 ipl->iplb_valid = false;
308 memset(&ipl->iplb, 0, sizeof(IplParameterBlock));
309 }
310 ipl->reipl_requested = false;
311}
312
313static void s390_ipl_class_init(ObjectClass *klass, void *data)
314{
315 DeviceClass *dc = DEVICE_CLASS(klass);
316
317 dc->realize = s390_ipl_realize;
318 dc->props = s390_ipl_properties;
319 dc->reset = s390_ipl_reset;
320 dc->vmsd = &vmstate_ipl;
321 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
322}
323
324static const TypeInfo s390_ipl_info = {
325 .class_init = s390_ipl_class_init,
326 .parent = TYPE_DEVICE,
327 .name = TYPE_S390_IPL,
328 .instance_size = sizeof(S390IPLState),
329};
330
331static void s390_ipl_register_types(void)
332{
333 type_register_static(&s390_ipl_info);
334}
335
336type_init(s390_ipl_register_types)
337
