xref: /openbmc/qemu/hw/misc/bcm2835_property.c (revision 28fe81f0)
1 /*
2  * Raspberry Pi emulation (c) 2012 Gregory Estrade
3  *
4  * This work is licensed under the terms of the GNU GPL, version 2 or later.
5  * See the COPYING file in the top-level directory.
6  */
7 
8 #include "qemu/osdep.h"
9 #include "qapi/error.h"
10 #include "hw/misc/bcm2835_property.h"
11 #include "hw/qdev-properties.h"
12 #include "migration/vmstate.h"
13 #include "hw/irq.h"
14 #include "hw/misc/bcm2835_mbox_defs.h"
15 #include "hw/arm/raspberrypi-fw-defs.h"
16 #include "sysemu/dma.h"
17 #include "qemu/log.h"
18 #include "qemu/module.h"
19 #include "trace.h"
20 #include "hw/arm/raspi_platform.h"
21 
22 #define VCHI_BUSADDR_SIZE       sizeof(uint32_t)
23 
24 /* https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface */
25 
bcm2835_property_mbox_push(BCM2835PropertyState * s,uint32_t value)26 static void bcm2835_property_mbox_push(BCM2835PropertyState *s, uint32_t value)
27 {
28     uint32_t tot_len;
29 
30     /*
31      * Copy the current state of the framebuffer config; we will update
32      * this copy as we process tags and then ask the framebuffer to use
33      * it at the end.
34      */
35     BCM2835FBConfig fbconfig = s->fbdev->config;
36     bool fbconfig_updated = false;
37 
38     value &= ~0xf;
39 
40     s->addr = value;
41 
42     tot_len = ldl_le_phys(&s->dma_as, value);
43 
44     /* @(addr + 4) : Buffer response code */
45     value = s->addr + 8;
46     while (value + 8 <= s->addr + tot_len) {
47         uint32_t tag = ldl_le_phys(&s->dma_as, value);
48         uint32_t bufsize = ldl_le_phys(&s->dma_as, value + 4);
49         /* @(value + 8) : Request/response indicator */
50         size_t resplen = 0;
51         switch (tag) {
52         case RPI_FWREQ_PROPERTY_END:
53             break;
54         case RPI_FWREQ_GET_FIRMWARE_REVISION:
55             stl_le_phys(&s->dma_as, value + 12, 346337);
56             resplen = 4;
57             break;
58         case RPI_FWREQ_GET_BOARD_MODEL:
59             qemu_log_mask(LOG_UNIMP,
60                           "bcm2835_property: 0x%08x get board model NYI\n",
61                           tag);
62             resplen = 4;
63             break;
64         case RPI_FWREQ_GET_BOARD_REVISION:
65             stl_le_phys(&s->dma_as, value + 12, s->board_rev);
66             resplen = 4;
67             break;
68         case RPI_FWREQ_GET_BOARD_MAC_ADDRESS:
69             resplen = sizeof(s->macaddr.a);
70             dma_memory_write(&s->dma_as, value + 12, s->macaddr.a, resplen,
71                              MEMTXATTRS_UNSPECIFIED);
72             break;
73         case RPI_FWREQ_GET_BOARD_SERIAL:
74             qemu_log_mask(LOG_UNIMP,
75                           "bcm2835_property: 0x%08x get board serial NYI\n",
76                           tag);
77             resplen = 8;
78             break;
79         case RPI_FWREQ_GET_ARM_MEMORY:
80             /* base */
81             stl_le_phys(&s->dma_as, value + 12, 0);
82             /* size */
83             stl_le_phys(&s->dma_as, value + 16, s->fbdev->vcram_base);
84             resplen = 8;
85             break;
86         case RPI_FWREQ_GET_VC_MEMORY:
87             /* base */
88             stl_le_phys(&s->dma_as, value + 12, s->fbdev->vcram_base);
89             /* size */
90             stl_le_phys(&s->dma_as, value + 16, s->fbdev->vcram_size);
91             resplen = 8;
92             break;
93         case RPI_FWREQ_SET_POWER_STATE:
94         {
95             /*
96              * Assume that whatever device they asked for exists,
97              * and we'll just claim we set it to the desired state.
98              */
99             uint32_t state = ldl_le_phys(&s->dma_as, value + 16);
100             stl_le_phys(&s->dma_as, value + 16, (state & 1));
101             resplen = 8;
102             break;
103         }
104 
105         /* Clocks */
106 
107         case RPI_FWREQ_GET_CLOCK_STATE:
108             stl_le_phys(&s->dma_as, value + 16, 0x1);
109             resplen = 8;
110             break;
111 
112         case RPI_FWREQ_SET_CLOCK_STATE:
113             qemu_log_mask(LOG_UNIMP,
114                           "bcm2835_property: 0x%08x set clock state NYI\n",
115                           tag);
116             resplen = 8;
117             break;
118 
119         case RPI_FWREQ_GET_CLOCK_RATE:
120         case RPI_FWREQ_GET_MAX_CLOCK_RATE:
121         case RPI_FWREQ_GET_MIN_CLOCK_RATE:
122             switch (ldl_le_phys(&s->dma_as, value + 12)) {
123             case RPI_FIRMWARE_EMMC_CLK_ID:
124                 stl_le_phys(&s->dma_as, value + 16, RPI_FIRMWARE_EMMC_CLK_RATE);
125                 break;
126             case RPI_FIRMWARE_UART_CLK_ID:
127                 stl_le_phys(&s->dma_as, value + 16, RPI_FIRMWARE_UART_CLK_RATE);
128                 break;
129             case RPI_FIRMWARE_CORE_CLK_ID:
130                 stl_le_phys(&s->dma_as, value + 16, RPI_FIRMWARE_CORE_CLK_RATE);
131                 break;
132             default:
133                 stl_le_phys(&s->dma_as, value + 16,
134                             RPI_FIRMWARE_DEFAULT_CLK_RATE);
135                 break;
136             }
137             resplen = 8;
138             break;
139 
140         case RPI_FWREQ_GET_CLOCKS:
141             /* TODO: add more clock IDs if needed */
142             stl_le_phys(&s->dma_as, value + 12, 0);
143             stl_le_phys(&s->dma_as, value + 16, RPI_FIRMWARE_ARM_CLK_ID);
144             resplen = 8;
145             break;
146 
147         case RPI_FWREQ_SET_CLOCK_RATE:
148         case RPI_FWREQ_SET_MAX_CLOCK_RATE:
149         case RPI_FWREQ_SET_MIN_CLOCK_RATE:
150             qemu_log_mask(LOG_UNIMP,
151                           "bcm2835_property: 0x%08x set clock rate NYI\n",
152                           tag);
153             resplen = 8;
154             break;
155 
156         /* Temperature */
157 
158         case RPI_FWREQ_GET_TEMPERATURE:
159             stl_le_phys(&s->dma_as, value + 16, 25000);
160             resplen = 8;
161             break;
162 
163         case RPI_FWREQ_GET_MAX_TEMPERATURE:
164             stl_le_phys(&s->dma_as, value + 16, 99000);
165             resplen = 8;
166             break;
167 
168         /* Frame buffer */
169 
170         case RPI_FWREQ_FRAMEBUFFER_ALLOCATE:
171             stl_le_phys(&s->dma_as, value + 12, fbconfig.base);
172             stl_le_phys(&s->dma_as, value + 16,
173                         bcm2835_fb_get_size(&fbconfig));
174             resplen = 8;
175             break;
176         case RPI_FWREQ_FRAMEBUFFER_RELEASE:
177             resplen = 0;
178             break;
179         case RPI_FWREQ_FRAMEBUFFER_BLANK:
180             resplen = 4;
181             break;
182         case RPI_FWREQ_FRAMEBUFFER_TEST_PHYSICAL_WIDTH_HEIGHT:
183         case RPI_FWREQ_FRAMEBUFFER_TEST_VIRTUAL_WIDTH_HEIGHT:
184             resplen = 8;
185             break;
186         case RPI_FWREQ_FRAMEBUFFER_SET_PHYSICAL_WIDTH_HEIGHT:
187             fbconfig.xres = ldl_le_phys(&s->dma_as, value + 12);
188             fbconfig.yres = ldl_le_phys(&s->dma_as, value + 16);
189             bcm2835_fb_validate_config(&fbconfig);
190             fbconfig_updated = true;
191             /* fall through */
192         case RPI_FWREQ_FRAMEBUFFER_GET_PHYSICAL_WIDTH_HEIGHT:
193             stl_le_phys(&s->dma_as, value + 12, fbconfig.xres);
194             stl_le_phys(&s->dma_as, value + 16, fbconfig.yres);
195             resplen = 8;
196             break;
197         case RPI_FWREQ_FRAMEBUFFER_SET_VIRTUAL_WIDTH_HEIGHT:
198             fbconfig.xres_virtual = ldl_le_phys(&s->dma_as, value + 12);
199             fbconfig.yres_virtual = ldl_le_phys(&s->dma_as, value + 16);
200             bcm2835_fb_validate_config(&fbconfig);
201             fbconfig_updated = true;
202             /* fall through */
203         case RPI_FWREQ_FRAMEBUFFER_GET_VIRTUAL_WIDTH_HEIGHT:
204             stl_le_phys(&s->dma_as, value + 12, fbconfig.xres_virtual);
205             stl_le_phys(&s->dma_as, value + 16, fbconfig.yres_virtual);
206             resplen = 8;
207             break;
208         case RPI_FWREQ_FRAMEBUFFER_TEST_DEPTH:
209             resplen = 4;
210             break;
211         case RPI_FWREQ_FRAMEBUFFER_SET_DEPTH:
212             fbconfig.bpp = ldl_le_phys(&s->dma_as, value + 12);
213             bcm2835_fb_validate_config(&fbconfig);
214             fbconfig_updated = true;
215             /* fall through */
216         case RPI_FWREQ_FRAMEBUFFER_GET_DEPTH:
217             stl_le_phys(&s->dma_as, value + 12, fbconfig.bpp);
218             resplen = 4;
219             break;
220         case RPI_FWREQ_FRAMEBUFFER_TEST_PIXEL_ORDER:
221             resplen = 4;
222             break;
223         case RPI_FWREQ_FRAMEBUFFER_SET_PIXEL_ORDER:
224             fbconfig.pixo = ldl_le_phys(&s->dma_as, value + 12);
225             bcm2835_fb_validate_config(&fbconfig);
226             fbconfig_updated = true;
227             /* fall through */
228         case RPI_FWREQ_FRAMEBUFFER_GET_PIXEL_ORDER:
229             stl_le_phys(&s->dma_as, value + 12, fbconfig.pixo);
230             resplen = 4;
231             break;
232         case RPI_FWREQ_FRAMEBUFFER_TEST_ALPHA_MODE:
233             resplen = 4;
234             break;
235         case RPI_FWREQ_FRAMEBUFFER_SET_ALPHA_MODE:
236             fbconfig.alpha = ldl_le_phys(&s->dma_as, value + 12);
237             bcm2835_fb_validate_config(&fbconfig);
238             fbconfig_updated = true;
239             /* fall through */
240         case RPI_FWREQ_FRAMEBUFFER_GET_ALPHA_MODE:
241             stl_le_phys(&s->dma_as, value + 12, fbconfig.alpha);
242             resplen = 4;
243             break;
244         case RPI_FWREQ_FRAMEBUFFER_GET_PITCH:
245             stl_le_phys(&s->dma_as, value + 12,
246                         bcm2835_fb_get_pitch(&fbconfig));
247             resplen = 4;
248             break;
249         case RPI_FWREQ_FRAMEBUFFER_TEST_VIRTUAL_OFFSET:
250             resplen = 8;
251             break;
252         case RPI_FWREQ_FRAMEBUFFER_SET_VIRTUAL_OFFSET:
253             fbconfig.xoffset = ldl_le_phys(&s->dma_as, value + 12);
254             fbconfig.yoffset = ldl_le_phys(&s->dma_as, value + 16);
255             bcm2835_fb_validate_config(&fbconfig);
256             fbconfig_updated = true;
257             /* fall through */
258         case RPI_FWREQ_FRAMEBUFFER_GET_VIRTUAL_OFFSET:
259             stl_le_phys(&s->dma_as, value + 12, fbconfig.xoffset);
260             stl_le_phys(&s->dma_as, value + 16, fbconfig.yoffset);
261             resplen = 8;
262             break;
263         case RPI_FWREQ_FRAMEBUFFER_GET_OVERSCAN:
264         case RPI_FWREQ_FRAMEBUFFER_TEST_OVERSCAN:
265         case RPI_FWREQ_FRAMEBUFFER_SET_OVERSCAN:
266             stl_le_phys(&s->dma_as, value + 12, 0);
267             stl_le_phys(&s->dma_as, value + 16, 0);
268             stl_le_phys(&s->dma_as, value + 20, 0);
269             stl_le_phys(&s->dma_as, value + 24, 0);
270             resplen = 16;
271             break;
272         case RPI_FWREQ_FRAMEBUFFER_SET_PALETTE:
273         {
274             uint32_t offset = ldl_le_phys(&s->dma_as, value + 12);
275             uint32_t length = ldl_le_phys(&s->dma_as, value + 16);
276             int resp;
277 
278             if (offset > 255 || length < 1 || length > 256) {
279                 resp = 1; /* invalid request */
280             } else {
281                 for (uint32_t e = 0; e < length; e++) {
282                     uint32_t color = ldl_le_phys(&s->dma_as, value + 20 + (e << 2));
283                     stl_le_phys(&s->dma_as,
284                                 s->fbdev->vcram_base + ((offset + e) << 2), color);
285                 }
286                 resp = 0;
287             }
288             stl_le_phys(&s->dma_as, value + 12, resp);
289             resplen = 4;
290             break;
291         }
292         case RPI_FWREQ_FRAMEBUFFER_GET_NUM_DISPLAYS:
293             stl_le_phys(&s->dma_as, value + 12, 1);
294             resplen = 4;
295             break;
296 
297         case RPI_FWREQ_GET_DMA_CHANNELS:
298             /* channels 2-5 */
299             stl_le_phys(&s->dma_as, value + 12, 0x003C);
300             resplen = 4;
301             break;
302 
303         case RPI_FWREQ_GET_COMMAND_LINE:
304             /*
305              * We follow the firmware behaviour: no NUL terminator is
306              * written to the buffer, and if the buffer is too short
307              * we report the required length in the response header
308              * and copy nothing to the buffer.
309              */
310             resplen = strlen(s->command_line);
311             if (bufsize >= resplen)
312                 address_space_write(&s->dma_as, value + 12,
313                                     MEMTXATTRS_UNSPECIFIED, s->command_line,
314                                     resplen);
315             break;
316 
317         case RPI_FWREQ_GET_THROTTLED:
318             stl_le_phys(&s->dma_as, value + 12, 0);
319             resplen = 4;
320             break;
321 
322         case RPI_FWREQ_VCHIQ_INIT:
323             stl_le_phys(&s->dma_as,
324                         value + offsetof(rpi_firmware_prop_request_t, payload),
325                         0);
326             resplen = VCHI_BUSADDR_SIZE;
327             break;
328 
329         /* Customer OTP */
330 
331         case RPI_FWREQ_GET_CUSTOMER_OTP:
332         {
333             uint32_t start_num = ldl_le_phys(&s->dma_as, value + 12);
334             uint32_t number = ldl_le_phys(&s->dma_as, value + 16);
335 
336             resplen = 8 + 4 * number;
337 
338             for (uint32_t n = start_num; n < start_num + number &&
339                  n < BCM2835_OTP_CUSTOMER_OTP_LEN; n++) {
340                 uint32_t otp_row = bcm2835_otp_get_row(s->otp,
341                                               BCM2835_OTP_CUSTOMER_OTP + n);
342                 stl_le_phys(&s->dma_as,
343                             value + 20 + ((n - start_num) << 2), otp_row);
344             }
345             break;
346         }
347         case RPI_FWREQ_SET_CUSTOMER_OTP:
348         {
349             uint32_t start_num = ldl_le_phys(&s->dma_as, value + 12);
350             uint32_t number = ldl_le_phys(&s->dma_as, value + 16);
351 
352             resplen = 4;
353 
354             /* Magic numbers to permanently lock customer OTP */
355             if (start_num == BCM2835_OTP_LOCK_NUM1 &&
356                 number == BCM2835_OTP_LOCK_NUM2) {
357                 bcm2835_otp_set_row(s->otp,
358                                     BCM2835_OTP_ROW_32,
359                                     BCM2835_OTP_ROW_32_LOCK);
360                 break;
361             }
362 
363             /* If row 32 has the lock bit, don't allow further writes */
364             if (bcm2835_otp_get_row(s->otp, BCM2835_OTP_ROW_32) &
365                                     BCM2835_OTP_ROW_32_LOCK) {
366                 break;
367             }
368 
369             for (uint32_t n = start_num; n < start_num + number &&
370                  n < BCM2835_OTP_CUSTOMER_OTP_LEN; n++) {
371                 uint32_t otp_row = ldl_le_phys(&s->dma_as,
372                                       value + 20 + ((n - start_num) << 2));
373                 bcm2835_otp_set_row(s->otp,
374                                     BCM2835_OTP_CUSTOMER_OTP + n, otp_row);
375             }
376             break;
377         }
378 
379         /* Device-specific private key */
380         case RPI_FWREQ_GET_PRIVATE_KEY:
381         {
382             uint32_t start_num = ldl_le_phys(&s->dma_as, value + 12);
383             uint32_t number = ldl_le_phys(&s->dma_as, value + 16);
384 
385             resplen = 8 + 4 * number;
386 
387             for (uint32_t n = start_num; n < start_num + number &&
388                  n < BCM2835_OTP_PRIVATE_KEY_LEN; n++) {
389                 uint32_t otp_row = bcm2835_otp_get_row(s->otp,
390                                               BCM2835_OTP_PRIVATE_KEY + n);
391                 stl_le_phys(&s->dma_as,
392                             value + 20 + ((n - start_num) << 2), otp_row);
393             }
394             break;
395         }
396         case RPI_FWREQ_SET_PRIVATE_KEY:
397         {
398             uint32_t start_num = ldl_le_phys(&s->dma_as, value + 12);
399             uint32_t number = ldl_le_phys(&s->dma_as, value + 16);
400 
401             resplen = 4;
402 
403             /* If row 32 has the lock bit, don't allow further writes */
404             if (bcm2835_otp_get_row(s->otp, BCM2835_OTP_ROW_32) &
405                                     BCM2835_OTP_ROW_32_LOCK) {
406                 break;
407             }
408 
409             for (uint32_t n = start_num; n < start_num + number &&
410                  n < BCM2835_OTP_PRIVATE_KEY_LEN; n++) {
411                 uint32_t otp_row = ldl_le_phys(&s->dma_as,
412                                       value + 20 + ((n - start_num) << 2));
413                 bcm2835_otp_set_row(s->otp,
414                                     BCM2835_OTP_PRIVATE_KEY + n, otp_row);
415             }
416             break;
417         }
418         default:
419             qemu_log_mask(LOG_UNIMP,
420                           "bcm2835_property: unhandled tag 0x%08x\n", tag);
421             break;
422         }
423 
424         trace_bcm2835_mbox_property(tag, bufsize, resplen);
425         if (tag == 0) {
426             break;
427         }
428 
429         stl_le_phys(&s->dma_as, value + 8, (1 << 31) | resplen);
430         value += bufsize + 12;
431     }
432 
433     /* Reconfigure framebuffer if required */
434     if (fbconfig_updated) {
435         bcm2835_fb_reconfigure(s->fbdev, &fbconfig);
436     }
437 
438     /* Buffer response code */
439     stl_le_phys(&s->dma_as, s->addr + 4, (1 << 31));
440 }
441 
bcm2835_property_read(void * opaque,hwaddr offset,unsigned size)442 static uint64_t bcm2835_property_read(void *opaque, hwaddr offset,
443                                       unsigned size)
444 {
445     BCM2835PropertyState *s = opaque;
446     uint32_t res = 0;
447 
448     switch (offset) {
449     case MBOX_AS_DATA:
450         res = MBOX_CHAN_PROPERTY | s->addr;
451         s->pending = false;
452         qemu_set_irq(s->mbox_irq, 0);
453         break;
454 
455     case MBOX_AS_PENDING:
456         res = s->pending;
457         break;
458 
459     default:
460         qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset %"HWADDR_PRIx"\n",
461                       __func__, offset);
462         return 0;
463     }
464 
465     return res;
466 }
467 
bcm2835_property_write(void * opaque,hwaddr offset,uint64_t value,unsigned size)468 static void bcm2835_property_write(void *opaque, hwaddr offset,
469                                    uint64_t value, unsigned size)
470 {
471     BCM2835PropertyState *s = opaque;
472 
473     switch (offset) {
474     case MBOX_AS_DATA:
475         /* bcm2835_mbox should check our pending status before pushing */
476         assert(!s->pending);
477         s->pending = true;
478         bcm2835_property_mbox_push(s, value);
479         qemu_set_irq(s->mbox_irq, 1);
480         break;
481 
482     default:
483         qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset %"HWADDR_PRIx"\n",
484                       __func__, offset);
485         return;
486     }
487 }
488 
489 static const MemoryRegionOps bcm2835_property_ops = {
490     .read = bcm2835_property_read,
491     .write = bcm2835_property_write,
492     .endianness = DEVICE_NATIVE_ENDIAN,
493     .valid.min_access_size = 4,
494     .valid.max_access_size = 4,
495 };
496 
497 static const VMStateDescription vmstate_bcm2835_property = {
498     .name = TYPE_BCM2835_PROPERTY,
499     .version_id = 1,
500     .minimum_version_id = 1,
501     .fields = (const VMStateField[]) {
502         VMSTATE_MACADDR(macaddr, BCM2835PropertyState),
503         VMSTATE_UINT32(addr, BCM2835PropertyState),
504         VMSTATE_BOOL(pending, BCM2835PropertyState),
505         VMSTATE_END_OF_LIST()
506     }
507 };
508 
bcm2835_property_init(Object * obj)509 static void bcm2835_property_init(Object *obj)
510 {
511     BCM2835PropertyState *s = BCM2835_PROPERTY(obj);
512 
513     memory_region_init_io(&s->iomem, OBJECT(s), &bcm2835_property_ops, s,
514                           TYPE_BCM2835_PROPERTY, 0x10);
515 
516     /*
517      * bcm2835_property_ops call into bcm2835_mbox, which in-turn reads from
518      * iomem. As such, mark iomem as re-entracy safe.
519      */
520     s->iomem.disable_reentrancy_guard = true;
521 
522     sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->iomem);
523     sysbus_init_irq(SYS_BUS_DEVICE(s), &s->mbox_irq);
524 }
525 
bcm2835_property_reset(DeviceState * dev)526 static void bcm2835_property_reset(DeviceState *dev)
527 {
528     BCM2835PropertyState *s = BCM2835_PROPERTY(dev);
529 
530     s->pending = false;
531 }
532 
bcm2835_property_realize(DeviceState * dev,Error ** errp)533 static void bcm2835_property_realize(DeviceState *dev, Error **errp)
534 {
535     BCM2835PropertyState *s = BCM2835_PROPERTY(dev);
536     Object *obj;
537 
538     obj = object_property_get_link(OBJECT(dev), "fb", &error_abort);
539     s->fbdev = BCM2835_FB(obj);
540 
541     obj = object_property_get_link(OBJECT(dev), "dma-mr", &error_abort);
542     s->dma_mr = MEMORY_REGION(obj);
543     address_space_init(&s->dma_as, s->dma_mr, TYPE_BCM2835_PROPERTY "-memory");
544 
545     obj = object_property_get_link(OBJECT(dev), "otp", &error_abort);
546     s->otp = BCM2835_OTP(obj);
547 
548     /* TODO: connect to MAC address of USB NIC device, once we emulate it */
549     qemu_macaddr_default_if_unset(&s->macaddr);
550 
551     bcm2835_property_reset(dev);
552 }
553 
554 static Property bcm2835_property_props[] = {
555     DEFINE_PROP_UINT32("board-rev", BCM2835PropertyState, board_rev, 0),
556     DEFINE_PROP_STRING("command-line", BCM2835PropertyState, command_line),
557     DEFINE_PROP_END_OF_LIST()
558 };
559 
bcm2835_property_class_init(ObjectClass * klass,void * data)560 static void bcm2835_property_class_init(ObjectClass *klass, void *data)
561 {
562     DeviceClass *dc = DEVICE_CLASS(klass);
563 
564     device_class_set_props(dc, bcm2835_property_props);
565     dc->realize = bcm2835_property_realize;
566     dc->vmsd = &vmstate_bcm2835_property;
567 }
568 
569 static const TypeInfo bcm2835_property_info = {
570     .name          = TYPE_BCM2835_PROPERTY,
571     .parent        = TYPE_SYS_BUS_DEVICE,
572     .instance_size = sizeof(BCM2835PropertyState),
573     .class_init    = bcm2835_property_class_init,
574     .instance_init = bcm2835_property_init,
575 };
576 
bcm2835_property_register_types(void)577 static void bcm2835_property_register_types(void)
578 {
579     type_register_static(&bcm2835_property_info);
580 }
581 
582 type_init(bcm2835_property_register_types)
583