root / hw / nvram / fw_cfg.c @ cac12210
History | View | Annotate | Download (16.5 kB)
1 |
/*
|
---|---|
2 |
* QEMU Firmware configuration device emulation
|
3 |
*
|
4 |
* Copyright (c) 2008 Gleb Natapov
|
5 |
*
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
8 |
* in the Software without restriction, including without limitation the rights
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
11 |
* furnished to do so, subject to the following conditions:
|
12 |
*
|
13 |
* The above copyright notice and this permission notice shall be included in
|
14 |
* all copies or substantial portions of the Software.
|
15 |
*
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 |
* THE SOFTWARE.
|
23 |
*/
|
24 |
#include "hw/hw.h" |
25 |
#include "sysemu/sysemu.h" |
26 |
#include "hw/isa/isa.h" |
27 |
#include "hw/nvram/fw_cfg.h" |
28 |
#include "hw/sysbus.h" |
29 |
#include "trace.h" |
30 |
#include "qemu/error-report.h" |
31 |
#include "qemu/config-file.h" |
32 |
|
33 |
#define FW_CFG_SIZE 2 |
34 |
#define FW_CFG_DATA_SIZE 1 |
35 |
#define TYPE_FW_CFG "fw_cfg" |
36 |
#define FW_CFG_NAME "fw_cfg" |
37 |
#define FW_CFG_PATH "/machine/" FW_CFG_NAME |
38 |
|
39 |
typedef struct FWCfgEntry { |
40 |
uint32_t len; |
41 |
uint8_t *data; |
42 |
void *callback_opaque;
|
43 |
FWCfgCallback callback; |
44 |
} FWCfgEntry; |
45 |
|
46 |
struct FWCfgState {
|
47 |
SysBusDevice busdev; |
48 |
MemoryRegion ctl_iomem, data_iomem, comb_iomem; |
49 |
uint32_t ctl_iobase, data_iobase; |
50 |
FWCfgEntry entries[2][FW_CFG_MAX_ENTRY];
|
51 |
FWCfgFiles *files; |
52 |
uint16_t cur_entry; |
53 |
uint32_t cur_offset; |
54 |
Notifier machine_ready; |
55 |
}; |
56 |
|
57 |
#define JPG_FILE 0 |
58 |
#define BMP_FILE 1 |
59 |
|
60 |
static char *read_splashfile(char *filename, gsize *file_sizep, |
61 |
int *file_typep)
|
62 |
{ |
63 |
GError *err = NULL;
|
64 |
gboolean res; |
65 |
gchar *content; |
66 |
int file_type;
|
67 |
unsigned int filehead; |
68 |
int bmp_bpp;
|
69 |
|
70 |
res = g_file_get_contents(filename, &content, file_sizep, &err); |
71 |
if (res == FALSE) {
|
72 |
error_report("failed to read splash file '%s'", filename);
|
73 |
g_error_free(err); |
74 |
return NULL; |
75 |
} |
76 |
|
77 |
/* check file size */
|
78 |
if (*file_sizep < 30) { |
79 |
goto error;
|
80 |
} |
81 |
|
82 |
/* check magic ID */
|
83 |
filehead = ((content[0] & 0xff) + (content[1] << 8)) & 0xffff; |
84 |
if (filehead == 0xd8ff) { |
85 |
file_type = JPG_FILE; |
86 |
} else if (filehead == 0x4d42) { |
87 |
file_type = BMP_FILE; |
88 |
} else {
|
89 |
goto error;
|
90 |
} |
91 |
|
92 |
/* check BMP bpp */
|
93 |
if (file_type == BMP_FILE) {
|
94 |
bmp_bpp = (content[28] + (content[29] << 8)) & 0xffff; |
95 |
if (bmp_bpp != 24) { |
96 |
goto error;
|
97 |
} |
98 |
} |
99 |
|
100 |
/* return values */
|
101 |
*file_typep = file_type; |
102 |
|
103 |
return content;
|
104 |
|
105 |
error:
|
106 |
error_report("splash file '%s' format not recognized; must be JPEG "
|
107 |
"or 24 bit BMP", filename);
|
108 |
g_free(content); |
109 |
return NULL; |
110 |
} |
111 |
|
112 |
static void fw_cfg_bootsplash(FWCfgState *s) |
113 |
{ |
114 |
int boot_splash_time = -1; |
115 |
const char *boot_splash_filename = NULL; |
116 |
char *p;
|
117 |
char *filename, *file_data;
|
118 |
gsize file_size; |
119 |
int file_type;
|
120 |
const char *temp; |
121 |
|
122 |
/* get user configuration */
|
123 |
QemuOptsList *plist = qemu_find_opts("boot-opts");
|
124 |
QemuOpts *opts = QTAILQ_FIRST(&plist->head); |
125 |
if (opts != NULL) { |
126 |
temp = qemu_opt_get(opts, "splash");
|
127 |
if (temp != NULL) { |
128 |
boot_splash_filename = temp; |
129 |
} |
130 |
temp = qemu_opt_get(opts, "splash-time");
|
131 |
if (temp != NULL) { |
132 |
p = (char *)temp;
|
133 |
boot_splash_time = strtol(p, (char **)&p, 10); |
134 |
} |
135 |
} |
136 |
|
137 |
/* insert splash time if user configurated */
|
138 |
if (boot_splash_time >= 0) { |
139 |
/* validate the input */
|
140 |
if (boot_splash_time > 0xffff) { |
141 |
error_report("splash time is big than 65535, force it to 65535.");
|
142 |
boot_splash_time = 0xffff;
|
143 |
} |
144 |
/* use little endian format */
|
145 |
qemu_extra_params_fw[0] = (uint8_t)(boot_splash_time & 0xff); |
146 |
qemu_extra_params_fw[1] = (uint8_t)((boot_splash_time >> 8) & 0xff); |
147 |
fw_cfg_add_file(s, "etc/boot-menu-wait", qemu_extra_params_fw, 2); |
148 |
} |
149 |
|
150 |
/* insert splash file if user configurated */
|
151 |
if (boot_splash_filename != NULL) { |
152 |
filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, boot_splash_filename); |
153 |
if (filename == NULL) { |
154 |
error_report("failed to find file '%s'.", boot_splash_filename);
|
155 |
return;
|
156 |
} |
157 |
|
158 |
/* loading file data */
|
159 |
file_data = read_splashfile(filename, &file_size, &file_type); |
160 |
if (file_data == NULL) { |
161 |
g_free(filename); |
162 |
return;
|
163 |
} |
164 |
if (boot_splash_filedata != NULL) { |
165 |
g_free(boot_splash_filedata); |
166 |
} |
167 |
boot_splash_filedata = (uint8_t *)file_data; |
168 |
boot_splash_filedata_size = file_size; |
169 |
|
170 |
/* insert data */
|
171 |
if (file_type == JPG_FILE) {
|
172 |
fw_cfg_add_file(s, "bootsplash.jpg",
|
173 |
boot_splash_filedata, boot_splash_filedata_size); |
174 |
} else {
|
175 |
fw_cfg_add_file(s, "bootsplash.bmp",
|
176 |
boot_splash_filedata, boot_splash_filedata_size); |
177 |
} |
178 |
g_free(filename); |
179 |
} |
180 |
} |
181 |
|
182 |
static void fw_cfg_reboot(FWCfgState *s) |
183 |
{ |
184 |
int reboot_timeout = -1; |
185 |
char *p;
|
186 |
const char *temp; |
187 |
|
188 |
/* get user configuration */
|
189 |
QemuOptsList *plist = qemu_find_opts("boot-opts");
|
190 |
QemuOpts *opts = QTAILQ_FIRST(&plist->head); |
191 |
if (opts != NULL) { |
192 |
temp = qemu_opt_get(opts, "reboot-timeout");
|
193 |
if (temp != NULL) { |
194 |
p = (char *)temp;
|
195 |
reboot_timeout = strtol(p, (char **)&p, 10); |
196 |
} |
197 |
} |
198 |
/* validate the input */
|
199 |
if (reboot_timeout > 0xffff) { |
200 |
error_report("reboot timeout is larger than 65535, force it to 65535.");
|
201 |
reboot_timeout = 0xffff;
|
202 |
} |
203 |
fw_cfg_add_file(s, "etc/boot-fail-wait", g_memdup(&reboot_timeout, 4), 4); |
204 |
} |
205 |
|
206 |
static void fw_cfg_write(FWCfgState *s, uint8_t value) |
207 |
{ |
208 |
int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
|
209 |
FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK]; |
210 |
|
211 |
trace_fw_cfg_write(s, value); |
212 |
|
213 |
if (s->cur_entry & FW_CFG_WRITE_CHANNEL && e->callback &&
|
214 |
s->cur_offset < e->len) { |
215 |
e->data[s->cur_offset++] = value; |
216 |
if (s->cur_offset == e->len) {
|
217 |
e->callback(e->callback_opaque, e->data); |
218 |
s->cur_offset = 0;
|
219 |
} |
220 |
} |
221 |
} |
222 |
|
223 |
static int fw_cfg_select(FWCfgState *s, uint16_t key) |
224 |
{ |
225 |
int ret;
|
226 |
|
227 |
s->cur_offset = 0;
|
228 |
if ((key & FW_CFG_ENTRY_MASK) >= FW_CFG_MAX_ENTRY) {
|
229 |
s->cur_entry = FW_CFG_INVALID; |
230 |
ret = 0;
|
231 |
} else {
|
232 |
s->cur_entry = key; |
233 |
ret = 1;
|
234 |
} |
235 |
|
236 |
trace_fw_cfg_select(s, key, ret); |
237 |
return ret;
|
238 |
} |
239 |
|
240 |
static uint8_t fw_cfg_read(FWCfgState *s)
|
241 |
{ |
242 |
int arch = !!(s->cur_entry & FW_CFG_ARCH_LOCAL);
|
243 |
FWCfgEntry *e = &s->entries[arch][s->cur_entry & FW_CFG_ENTRY_MASK]; |
244 |
uint8_t ret; |
245 |
|
246 |
if (s->cur_entry == FW_CFG_INVALID || !e->data || s->cur_offset >= e->len)
|
247 |
ret = 0;
|
248 |
else
|
249 |
ret = e->data[s->cur_offset++]; |
250 |
|
251 |
trace_fw_cfg_read(s, ret); |
252 |
return ret;
|
253 |
} |
254 |
|
255 |
static uint64_t fw_cfg_data_mem_read(void *opaque, hwaddr addr, |
256 |
unsigned size)
|
257 |
{ |
258 |
return fw_cfg_read(opaque);
|
259 |
} |
260 |
|
261 |
static void fw_cfg_data_mem_write(void *opaque, hwaddr addr, |
262 |
uint64_t value, unsigned size)
|
263 |
{ |
264 |
fw_cfg_write(opaque, (uint8_t)value); |
265 |
} |
266 |
|
267 |
static void fw_cfg_ctl_mem_write(void *opaque, hwaddr addr, |
268 |
uint64_t value, unsigned size)
|
269 |
{ |
270 |
fw_cfg_select(opaque, (uint16_t)value); |
271 |
} |
272 |
|
273 |
static bool fw_cfg_ctl_mem_valid(void *opaque, hwaddr addr, |
274 |
unsigned size, bool is_write) |
275 |
{ |
276 |
return is_write && size == 2; |
277 |
} |
278 |
|
279 |
static uint64_t fw_cfg_comb_read(void *opaque, hwaddr addr, |
280 |
unsigned size)
|
281 |
{ |
282 |
return fw_cfg_read(opaque);
|
283 |
} |
284 |
|
285 |
static void fw_cfg_comb_write(void *opaque, hwaddr addr, |
286 |
uint64_t value, unsigned size)
|
287 |
{ |
288 |
switch (size) {
|
289 |
case 1: |
290 |
fw_cfg_write(opaque, (uint8_t)value); |
291 |
break;
|
292 |
case 2: |
293 |
fw_cfg_select(opaque, (uint16_t)value); |
294 |
break;
|
295 |
} |
296 |
} |
297 |
|
298 |
static bool fw_cfg_comb_valid(void *opaque, hwaddr addr, |
299 |
unsigned size, bool is_write) |
300 |
{ |
301 |
return (size == 1) || (is_write && size == 2); |
302 |
} |
303 |
|
304 |
static const MemoryRegionOps fw_cfg_ctl_mem_ops = { |
305 |
.write = fw_cfg_ctl_mem_write, |
306 |
.endianness = DEVICE_NATIVE_ENDIAN, |
307 |
.valid.accepts = fw_cfg_ctl_mem_valid, |
308 |
}; |
309 |
|
310 |
static const MemoryRegionOps fw_cfg_data_mem_ops = { |
311 |
.read = fw_cfg_data_mem_read, |
312 |
.write = fw_cfg_data_mem_write, |
313 |
.endianness = DEVICE_NATIVE_ENDIAN, |
314 |
.valid = { |
315 |
.min_access_size = 1,
|
316 |
.max_access_size = 1,
|
317 |
}, |
318 |
}; |
319 |
|
320 |
static const MemoryRegionOps fw_cfg_comb_mem_ops = { |
321 |
.read = fw_cfg_comb_read, |
322 |
.write = fw_cfg_comb_write, |
323 |
.endianness = DEVICE_NATIVE_ENDIAN, |
324 |
.valid.accepts = fw_cfg_comb_valid, |
325 |
}; |
326 |
|
327 |
static void fw_cfg_reset(DeviceState *d) |
328 |
{ |
329 |
FWCfgState *s = DO_UPCAST(FWCfgState, busdev.qdev, d); |
330 |
|
331 |
fw_cfg_select(s, 0);
|
332 |
} |
333 |
|
334 |
/* Save restore 32 bit int as uint16_t
|
335 |
This is a Big hack, but it is how the old state did it.
|
336 |
Or we broke compatibility in the state, or we can't use struct tm
|
337 |
*/
|
338 |
|
339 |
static int get_uint32_as_uint16(QEMUFile *f, void *pv, size_t size) |
340 |
{ |
341 |
uint32_t *v = pv; |
342 |
*v = qemu_get_be16(f); |
343 |
return 0; |
344 |
} |
345 |
|
346 |
static void put_unused(QEMUFile *f, void *pv, size_t size) |
347 |
{ |
348 |
fprintf(stderr, "uint32_as_uint16 is only used for backward compatibility.\n");
|
349 |
fprintf(stderr, "This functions shouldn't be called.\n");
|
350 |
} |
351 |
|
352 |
static const VMStateInfo vmstate_hack_uint32_as_uint16 = { |
353 |
.name = "int32_as_uint16",
|
354 |
.get = get_uint32_as_uint16, |
355 |
.put = put_unused, |
356 |
}; |
357 |
|
358 |
#define VMSTATE_UINT16_HACK(_f, _s, _t) \
|
359 |
VMSTATE_SINGLE_TEST(_f, _s, _t, 0, vmstate_hack_uint32_as_uint16, uint32_t)
|
360 |
|
361 |
|
362 |
static bool is_version_1(void *opaque, int version_id) |
363 |
{ |
364 |
return version_id == 1; |
365 |
} |
366 |
|
367 |
static const VMStateDescription vmstate_fw_cfg = { |
368 |
.name = "fw_cfg",
|
369 |
.version_id = 2,
|
370 |
.minimum_version_id = 1,
|
371 |
.minimum_version_id_old = 1,
|
372 |
.fields = (VMStateField []) { |
373 |
VMSTATE_UINT16(cur_entry, FWCfgState), |
374 |
VMSTATE_UINT16_HACK(cur_offset, FWCfgState, is_version_1), |
375 |
VMSTATE_UINT32_V(cur_offset, FWCfgState, 2),
|
376 |
VMSTATE_END_OF_LIST() |
377 |
} |
378 |
}; |
379 |
|
380 |
void fw_cfg_add_bytes(FWCfgState *s, uint16_t key, void *data, size_t len) |
381 |
{ |
382 |
int arch = !!(key & FW_CFG_ARCH_LOCAL);
|
383 |
|
384 |
key &= FW_CFG_ENTRY_MASK; |
385 |
|
386 |
assert(key < FW_CFG_MAX_ENTRY && len < UINT32_MAX); |
387 |
|
388 |
s->entries[arch][key].data = data; |
389 |
s->entries[arch][key].len = (uint32_t)len; |
390 |
} |
391 |
|
392 |
void fw_cfg_add_string(FWCfgState *s, uint16_t key, const char *value) |
393 |
{ |
394 |
size_t sz = strlen(value) + 1;
|
395 |
|
396 |
return fw_cfg_add_bytes(s, key, g_memdup(value, sz), sz);
|
397 |
} |
398 |
|
399 |
void fw_cfg_add_i16(FWCfgState *s, uint16_t key, uint16_t value)
|
400 |
{ |
401 |
uint16_t *copy; |
402 |
|
403 |
copy = g_malloc(sizeof(value));
|
404 |
*copy = cpu_to_le16(value); |
405 |
fw_cfg_add_bytes(s, key, copy, sizeof(value));
|
406 |
} |
407 |
|
408 |
void fw_cfg_add_i32(FWCfgState *s, uint16_t key, uint32_t value)
|
409 |
{ |
410 |
uint32_t *copy; |
411 |
|
412 |
copy = g_malloc(sizeof(value));
|
413 |
*copy = cpu_to_le32(value); |
414 |
fw_cfg_add_bytes(s, key, copy, sizeof(value));
|
415 |
} |
416 |
|
417 |
void fw_cfg_add_i64(FWCfgState *s, uint16_t key, uint64_t value)
|
418 |
{ |
419 |
uint64_t *copy; |
420 |
|
421 |
copy = g_malloc(sizeof(value));
|
422 |
*copy = cpu_to_le64(value); |
423 |
fw_cfg_add_bytes(s, key, copy, sizeof(value));
|
424 |
} |
425 |
|
426 |
void fw_cfg_add_callback(FWCfgState *s, uint16_t key, FWCfgCallback callback,
|
427 |
void *callback_opaque, void *data, size_t len) |
428 |
{ |
429 |
int arch = !!(key & FW_CFG_ARCH_LOCAL);
|
430 |
|
431 |
assert(key & FW_CFG_WRITE_CHANNEL); |
432 |
|
433 |
key &= FW_CFG_ENTRY_MASK; |
434 |
|
435 |
assert(key < FW_CFG_MAX_ENTRY && len <= UINT32_MAX); |
436 |
|
437 |
s->entries[arch][key].data = data; |
438 |
s->entries[arch][key].len = (uint32_t)len; |
439 |
s->entries[arch][key].callback_opaque = callback_opaque; |
440 |
s->entries[arch][key].callback = callback; |
441 |
} |
442 |
|
443 |
void fw_cfg_add_file(FWCfgState *s, const char *filename, |
444 |
void *data, size_t len)
|
445 |
{ |
446 |
int i, index;
|
447 |
size_t dsize; |
448 |
|
449 |
if (!s->files) {
|
450 |
dsize = sizeof(uint32_t) + sizeof(FWCfgFile) * FW_CFG_FILE_SLOTS; |
451 |
s->files = g_malloc0(dsize); |
452 |
fw_cfg_add_bytes(s, FW_CFG_FILE_DIR, s->files, dsize); |
453 |
} |
454 |
|
455 |
index = be32_to_cpu(s->files->count); |
456 |
assert(index < FW_CFG_FILE_SLOTS); |
457 |
|
458 |
fw_cfg_add_bytes(s, FW_CFG_FILE_FIRST + index, data, len); |
459 |
|
460 |
pstrcpy(s->files->f[index].name, sizeof(s->files->f[index].name),
|
461 |
filename); |
462 |
for (i = 0; i < index; i++) { |
463 |
if (strcmp(s->files->f[index].name, s->files->f[i].name) == 0) { |
464 |
trace_fw_cfg_add_file_dupe(s, s->files->f[index].name); |
465 |
return;
|
466 |
} |
467 |
} |
468 |
|
469 |
s->files->f[index].size = cpu_to_be32(len); |
470 |
s->files->f[index].select = cpu_to_be16(FW_CFG_FILE_FIRST + index); |
471 |
trace_fw_cfg_add_file(s, index, s->files->f[index].name, len); |
472 |
|
473 |
s->files->count = cpu_to_be32(index+1);
|
474 |
} |
475 |
|
476 |
static void fw_cfg_machine_ready(struct Notifier *n, void *data) |
477 |
{ |
478 |
size_t len; |
479 |
FWCfgState *s = container_of(n, FWCfgState, machine_ready); |
480 |
char *bootindex = get_boot_devices_list(&len);
|
481 |
|
482 |
fw_cfg_add_file(s, "bootorder", (uint8_t*)bootindex, len);
|
483 |
} |
484 |
|
485 |
FWCfgState *fw_cfg_init(uint32_t ctl_port, uint32_t data_port, |
486 |
hwaddr ctl_addr, hwaddr data_addr) |
487 |
{ |
488 |
DeviceState *dev; |
489 |
SysBusDevice *d; |
490 |
FWCfgState *s; |
491 |
|
492 |
dev = qdev_create(NULL, "fw_cfg"); |
493 |
qdev_prop_set_uint32(dev, "ctl_iobase", ctl_port);
|
494 |
qdev_prop_set_uint32(dev, "data_iobase", data_port);
|
495 |
d = SYS_BUS_DEVICE(dev); |
496 |
|
497 |
s = DO_UPCAST(FWCfgState, busdev.qdev, dev); |
498 |
|
499 |
assert(!object_resolve_path(FW_CFG_PATH, NULL));
|
500 |
|
501 |
object_property_add_child(qdev_get_machine(), FW_CFG_NAME, OBJECT(s), NULL);
|
502 |
|
503 |
qdev_init_nofail(dev); |
504 |
|
505 |
if (ctl_addr) {
|
506 |
sysbus_mmio_map(d, 0, ctl_addr);
|
507 |
} |
508 |
if (data_addr) {
|
509 |
sysbus_mmio_map(d, 1, data_addr);
|
510 |
} |
511 |
fw_cfg_add_bytes(s, FW_CFG_SIGNATURE, (char *)"QEMU", 4); |
512 |
fw_cfg_add_bytes(s, FW_CFG_UUID, qemu_uuid, 16);
|
513 |
fw_cfg_add_i16(s, FW_CFG_NOGRAPHIC, (uint16_t)(display_type == DT_NOGRAPHIC)); |
514 |
fw_cfg_add_i16(s, FW_CFG_NB_CPUS, (uint16_t)smp_cpus); |
515 |
fw_cfg_add_i16(s, FW_CFG_BOOT_MENU, (uint16_t)boot_menu); |
516 |
fw_cfg_bootsplash(s); |
517 |
fw_cfg_reboot(s); |
518 |
|
519 |
s->machine_ready.notify = fw_cfg_machine_ready; |
520 |
qemu_add_machine_init_done_notifier(&s->machine_ready); |
521 |
|
522 |
return s;
|
523 |
} |
524 |
|
525 |
static int fw_cfg_init1(SysBusDevice *dev) |
526 |
{ |
527 |
FWCfgState *s = FROM_SYSBUS(FWCfgState, dev); |
528 |
|
529 |
memory_region_init_io(&s->ctl_iomem, &fw_cfg_ctl_mem_ops, s, |
530 |
"fwcfg.ctl", FW_CFG_SIZE);
|
531 |
sysbus_init_mmio(dev, &s->ctl_iomem); |
532 |
memory_region_init_io(&s->data_iomem, &fw_cfg_data_mem_ops, s, |
533 |
"fwcfg.data", FW_CFG_DATA_SIZE);
|
534 |
sysbus_init_mmio(dev, &s->data_iomem); |
535 |
/* In case ctl and data overlap: */
|
536 |
memory_region_init_io(&s->comb_iomem, &fw_cfg_comb_mem_ops, s, |
537 |
"fwcfg", FW_CFG_SIZE);
|
538 |
|
539 |
if (s->ctl_iobase + 1 == s->data_iobase) { |
540 |
sysbus_add_io(dev, s->ctl_iobase, &s->comb_iomem); |
541 |
} else {
|
542 |
if (s->ctl_iobase) {
|
543 |
sysbus_add_io(dev, s->ctl_iobase, &s->ctl_iomem); |
544 |
} |
545 |
if (s->data_iobase) {
|
546 |
sysbus_add_io(dev, s->data_iobase, &s->data_iomem); |
547 |
} |
548 |
} |
549 |
return 0; |
550 |
} |
551 |
|
552 |
static Property fw_cfg_properties[] = {
|
553 |
DEFINE_PROP_HEX32("ctl_iobase", FWCfgState, ctl_iobase, -1), |
554 |
DEFINE_PROP_HEX32("data_iobase", FWCfgState, data_iobase, -1), |
555 |
DEFINE_PROP_END_OF_LIST(), |
556 |
}; |
557 |
|
558 |
FWCfgState *fw_cfg_find(void)
|
559 |
{ |
560 |
return OBJECT_CHECK(FWCfgState, object_resolve_path(FW_CFG_PATH, NULL), |
561 |
TYPE_FW_CFG); |
562 |
} |
563 |
|
564 |
static void fw_cfg_class_init(ObjectClass *klass, void *data) |
565 |
{ |
566 |
DeviceClass *dc = DEVICE_CLASS(klass); |
567 |
SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass); |
568 |
|
569 |
k->init = fw_cfg_init1; |
570 |
dc->no_user = 1;
|
571 |
dc->reset = fw_cfg_reset; |
572 |
dc->vmsd = &vmstate_fw_cfg; |
573 |
dc->props = fw_cfg_properties; |
574 |
} |
575 |
|
576 |
static const TypeInfo fw_cfg_info = { |
577 |
.name = TYPE_FW_CFG, |
578 |
.parent = TYPE_SYS_BUS_DEVICE, |
579 |
.instance_size = sizeof(FWCfgState),
|
580 |
.class_init = fw_cfg_class_init, |
581 |
}; |
582 |
|
583 |
static void fw_cfg_register_types(void) |
584 |
{ |
585 |
type_register_static(&fw_cfg_info); |
586 |
} |
587 |
|
588 |
type_init(fw_cfg_register_types) |