xref: /qemu/hw/misc/arm_sysctl.c (revision 37677d7d)
1 /*
2  * Status and system control registers for ARM RealView/Versatile boards.
3  *
4  * Copyright (c) 2006-2007 CodeSourcery.
5  * Written by Paul Brook
6  *
7  * This code is licensed under the GPL.
8  */
9 
10 #include "qemu/osdep.h"
11 #include "hw/hw.h"
12 #include "qemu/timer.h"
13 #include "qemu/bitops.h"
14 #include "hw/sysbus.h"
15 #include "hw/arm/primecell.h"
16 #include "sysemu/sysemu.h"
17 #include "qemu/log.h"
18 #include "qemu/module.h"
19 
20 #define LOCK_VALUE 0xa05f
21 
22 #define TYPE_ARM_SYSCTL "realview_sysctl"
23 #define ARM_SYSCTL(obj) \
24     OBJECT_CHECK(arm_sysctl_state, (obj), TYPE_ARM_SYSCTL)
25 
26 typedef struct {
27     SysBusDevice parent_obj;
28 
29     MemoryRegion iomem;
30     qemu_irq pl110_mux_ctrl;
31 
32     uint32_t sys_id;
33     uint32_t leds;
34     uint16_t lockval;
35     uint32_t cfgdata1;
36     uint32_t cfgdata2;
37     uint32_t flags;
38     uint32_t nvflags;
39     uint32_t resetlevel;
40     uint32_t proc_id;
41     uint32_t sys_mci;
42     uint32_t sys_cfgdata;
43     uint32_t sys_cfgctrl;
44     uint32_t sys_cfgstat;
45     uint32_t sys_clcd;
46     uint32_t mb_clock[6];
47     uint32_t *db_clock;
48     uint32_t db_num_vsensors;
49     uint32_t *db_voltage;
50     uint32_t db_num_clocks;
51     uint32_t *db_clock_reset;
52 } arm_sysctl_state;
53 
54 static const VMStateDescription vmstate_arm_sysctl = {
55     .name = "realview_sysctl",
56     .version_id = 4,
57     .minimum_version_id = 1,
58     .fields = (VMStateField[]) {
59         VMSTATE_UINT32(leds, arm_sysctl_state),
60         VMSTATE_UINT16(lockval, arm_sysctl_state),
61         VMSTATE_UINT32(cfgdata1, arm_sysctl_state),
62         VMSTATE_UINT32(cfgdata2, arm_sysctl_state),
63         VMSTATE_UINT32(flags, arm_sysctl_state),
64         VMSTATE_UINT32(nvflags, arm_sysctl_state),
65         VMSTATE_UINT32(resetlevel, arm_sysctl_state),
66         VMSTATE_UINT32_V(sys_mci, arm_sysctl_state, 2),
67         VMSTATE_UINT32_V(sys_cfgdata, arm_sysctl_state, 2),
68         VMSTATE_UINT32_V(sys_cfgctrl, arm_sysctl_state, 2),
69         VMSTATE_UINT32_V(sys_cfgstat, arm_sysctl_state, 2),
70         VMSTATE_UINT32_V(sys_clcd, arm_sysctl_state, 3),
71         VMSTATE_UINT32_ARRAY_V(mb_clock, arm_sysctl_state, 6, 4),
72         VMSTATE_VARRAY_UINT32(db_clock, arm_sysctl_state, db_num_clocks,
73                               4, vmstate_info_uint32, uint32_t),
74         VMSTATE_END_OF_LIST()
75     }
76 };
77 
78 /* The PB926 actually uses a different format for
79  * its SYS_ID register. Fortunately the bits which are
80  * board type on later boards are distinct.
81  */
82 #define BOARD_ID_PB926 0x100
83 #define BOARD_ID_EB 0x140
84 #define BOARD_ID_PBA8 0x178
85 #define BOARD_ID_PBX 0x182
86 #define BOARD_ID_VEXPRESS 0x190
87 
88 static int board_id(arm_sysctl_state *s)
89 {
90     /* Extract the board ID field from the SYS_ID register value */
91     return (s->sys_id >> 16) & 0xfff;
92 }
93 
94 static void arm_sysctl_reset(DeviceState *d)
95 {
96     arm_sysctl_state *s = ARM_SYSCTL(d);
97     int i;
98 
99     s->leds = 0;
100     s->lockval = 0;
101     s->cfgdata1 = 0;
102     s->cfgdata2 = 0;
103     s->flags = 0;
104     s->resetlevel = 0;
105     /* Motherboard oscillators (in Hz) */
106     s->mb_clock[0] = 50000000; /* Static memory clock: 50MHz */
107     s->mb_clock[1] = 23750000; /* motherboard CLCD clock: 23.75MHz */
108     s->mb_clock[2] = 24000000; /* IO FPGA peripheral clock: 24MHz */
109     s->mb_clock[3] = 24000000; /* IO FPGA reserved clock: 24MHz */
110     s->mb_clock[4] = 24000000; /* System bus global clock: 24MHz */
111     s->mb_clock[5] = 24000000; /* IO FPGA reserved clock: 24MHz */
112     /* Daughterboard oscillators: reset from property values */
113     for (i = 0; i < s->db_num_clocks; i++) {
114         s->db_clock[i] = s->db_clock_reset[i];
115     }
116     if (board_id(s) == BOARD_ID_VEXPRESS) {
117         /* On VExpress this register will RAZ/WI */
118         s->sys_clcd = 0;
119     } else {
120         /* All others: CLCDID 0x1f, indicating VGA */
121         s->sys_clcd = 0x1f00;
122     }
123 }
124 
125 static uint64_t arm_sysctl_read(void *opaque, hwaddr offset,
126                                 unsigned size)
127 {
128     arm_sysctl_state *s = (arm_sysctl_state *)opaque;
129 
130     switch (offset) {
131     case 0x00: /* ID */
132         return s->sys_id;
133     case 0x04: /* SW */
134         /* General purpose hardware switches.
135            We don't have a useful way of exposing these to the user.  */
136         return 0;
137     case 0x08: /* LED */
138         return s->leds;
139     case 0x20: /* LOCK */
140         return s->lockval;
141     case 0x0c: /* OSC0 */
142     case 0x10: /* OSC1 */
143     case 0x14: /* OSC2 */
144     case 0x18: /* OSC3 */
145     case 0x1c: /* OSC4 */
146     case 0x24: /* 100HZ */
147         /* ??? Implement these.  */
148         return 0;
149     case 0x28: /* CFGDATA1 */
150         return s->cfgdata1;
151     case 0x2c: /* CFGDATA2 */
152         return s->cfgdata2;
153     case 0x30: /* FLAGS */
154         return s->flags;
155     case 0x38: /* NVFLAGS */
156         return s->nvflags;
157     case 0x40: /* RESETCTL */
158         if (board_id(s) == BOARD_ID_VEXPRESS) {
159             /* reserved: RAZ/WI */
160             return 0;
161         }
162         return s->resetlevel;
163     case 0x44: /* PCICTL */
164         return 1;
165     case 0x48: /* MCI */
166         return s->sys_mci;
167     case 0x4c: /* FLASH */
168         return 0;
169     case 0x50: /* CLCD */
170         return s->sys_clcd;
171     case 0x54: /* CLCDSER */
172         return 0;
173     case 0x58: /* BOOTCS */
174         return 0;
175     case 0x5c: /* 24MHz */
176         return muldiv64(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL), 24000000,
177                         NANOSECONDS_PER_SECOND);
178     case 0x60: /* MISC */
179         return 0;
180     case 0x84: /* PROCID0 */
181         return s->proc_id;
182     case 0x88: /* PROCID1 */
183         return 0xff000000;
184     case 0x64: /* DMAPSR0 */
185     case 0x68: /* DMAPSR1 */
186     case 0x6c: /* DMAPSR2 */
187     case 0x70: /* IOSEL */
188     case 0x74: /* PLDCTL */
189     case 0x80: /* BUSID */
190     case 0x8c: /* OSCRESET0 */
191     case 0x90: /* OSCRESET1 */
192     case 0x94: /* OSCRESET2 */
193     case 0x98: /* OSCRESET3 */
194     case 0x9c: /* OSCRESET4 */
195     case 0xc0: /* SYS_TEST_OSC0 */
196     case 0xc4: /* SYS_TEST_OSC1 */
197     case 0xc8: /* SYS_TEST_OSC2 */
198     case 0xcc: /* SYS_TEST_OSC3 */
199     case 0xd0: /* SYS_TEST_OSC4 */
200         return 0;
201     case 0xa0: /* SYS_CFGDATA */
202         if (board_id(s) != BOARD_ID_VEXPRESS) {
203             goto bad_reg;
204         }
205         return s->sys_cfgdata;
206     case 0xa4: /* SYS_CFGCTRL */
207         if (board_id(s) != BOARD_ID_VEXPRESS) {
208             goto bad_reg;
209         }
210         return s->sys_cfgctrl;
211     case 0xa8: /* SYS_CFGSTAT */
212         if (board_id(s) != BOARD_ID_VEXPRESS) {
213             goto bad_reg;
214         }
215         return s->sys_cfgstat;
216     default:
217     bad_reg:
218         qemu_log_mask(LOG_GUEST_ERROR,
219                       "arm_sysctl_read: Bad register offset 0x%x\n",
220                       (int)offset);
221         return 0;
222     }
223 }
224 
225 /* SYS_CFGCTRL functions */
226 #define SYS_CFG_OSC 1
227 #define SYS_CFG_VOLT 2
228 #define SYS_CFG_AMP 3
229 #define SYS_CFG_TEMP 4
230 #define SYS_CFG_RESET 5
231 #define SYS_CFG_SCC 6
232 #define SYS_CFG_MUXFPGA 7
233 #define SYS_CFG_SHUTDOWN 8
234 #define SYS_CFG_REBOOT 9
235 #define SYS_CFG_DVIMODE 11
236 #define SYS_CFG_POWER 12
237 #define SYS_CFG_ENERGY 13
238 
239 /* SYS_CFGCTRL site field values */
240 #define SYS_CFG_SITE_MB 0
241 #define SYS_CFG_SITE_DB1 1
242 #define SYS_CFG_SITE_DB2 2
243 
244 /**
245  * vexpress_cfgctrl_read:
246  * @s: arm_sysctl_state pointer
247  * @dcc, @function, @site, @position, @device: split out values from
248  * SYS_CFGCTRL register
249  * @val: pointer to where to put the read data on success
250  *
251  * Handle a VExpress SYS_CFGCTRL register read. On success, return true and
252  * write the read value to *val. On failure, return false (and val may
253  * or may not be written to).
254  */
255 static bool vexpress_cfgctrl_read(arm_sysctl_state *s, unsigned int dcc,
256                                   unsigned int function, unsigned int site,
257                                   unsigned int position, unsigned int device,
258                                   uint32_t *val)
259 {
260     /* We don't support anything other than DCC 0, board stack position 0
261      * or sites other than motherboard/daughterboard:
262      */
263     if (dcc != 0 || position != 0 ||
264         (site != SYS_CFG_SITE_MB && site != SYS_CFG_SITE_DB1)) {
265         goto cfgctrl_unimp;
266     }
267 
268     switch (function) {
269     case SYS_CFG_VOLT:
270         if (site == SYS_CFG_SITE_DB1 && device < s->db_num_vsensors) {
271             *val = s->db_voltage[device];
272             return true;
273         }
274         if (site == SYS_CFG_SITE_MB && device == 0) {
275             /* There is only one motherboard voltage sensor:
276              * VIO : 3.3V : bus voltage between mother and daughterboard
277              */
278             *val = 3300000;
279             return true;
280         }
281         break;
282     case SYS_CFG_OSC:
283         if (site == SYS_CFG_SITE_MB && device < ARRAY_SIZE(s->mb_clock)) {
284             /* motherboard clock */
285             *val = s->mb_clock[device];
286             return true;
287         }
288         if (site == SYS_CFG_SITE_DB1 && device < s->db_num_clocks) {
289             /* daughterboard clock */
290             *val = s->db_clock[device];
291             return true;
292         }
293         break;
294     default:
295         break;
296     }
297 
298 cfgctrl_unimp:
299     qemu_log_mask(LOG_UNIMP,
300                   "arm_sysctl: Unimplemented SYS_CFGCTRL read of function "
301                   "0x%x DCC 0x%x site 0x%x position 0x%x device 0x%x\n",
302                   function, dcc, site, position, device);
303     return false;
304 }
305 
306 /**
307  * vexpress_cfgctrl_write:
308  * @s: arm_sysctl_state pointer
309  * @dcc, @function, @site, @position, @device: split out values from
310  * SYS_CFGCTRL register
311  * @val: data to write
312  *
313  * Handle a VExpress SYS_CFGCTRL register write. On success, return true.
314  * On failure, return false.
315  */
316 static bool vexpress_cfgctrl_write(arm_sysctl_state *s, unsigned int dcc,
317                                    unsigned int function, unsigned int site,
318                                    unsigned int position, unsigned int device,
319                                    uint32_t val)
320 {
321     /* We don't support anything other than DCC 0, board stack position 0
322      * or sites other than motherboard/daughterboard:
323      */
324     if (dcc != 0 || position != 0 ||
325         (site != SYS_CFG_SITE_MB && site != SYS_CFG_SITE_DB1)) {
326         goto cfgctrl_unimp;
327     }
328 
329     switch (function) {
330     case SYS_CFG_OSC:
331         if (site == SYS_CFG_SITE_MB && device < ARRAY_SIZE(s->mb_clock)) {
332             /* motherboard clock */
333             s->mb_clock[device] = val;
334             return true;
335         }
336         if (site == SYS_CFG_SITE_DB1 && device < s->db_num_clocks) {
337             /* daughterboard clock */
338             s->db_clock[device] = val;
339             return true;
340         }
341         break;
342     case SYS_CFG_MUXFPGA:
343         if (site == SYS_CFG_SITE_MB && device == 0) {
344             /* Select whether video output comes from motherboard
345              * or daughterboard: log and ignore as QEMU doesn't
346              * support this.
347              */
348             qemu_log_mask(LOG_UNIMP, "arm_sysctl: selection of video output "
349                           "not supported, ignoring\n");
350             return true;
351         }
352         break;
353     case SYS_CFG_SHUTDOWN:
354         if (site == SYS_CFG_SITE_MB && device == 0) {
355             qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
356             return true;
357         }
358         break;
359     case SYS_CFG_REBOOT:
360         if (site == SYS_CFG_SITE_MB && device == 0) {
361             qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
362             return true;
363         }
364         break;
365     case SYS_CFG_DVIMODE:
366         if (site == SYS_CFG_SITE_MB && device == 0) {
367             /* Selecting DVI mode is meaningless for QEMU: we will
368              * always display the output correctly according to the
369              * pixel height/width programmed into the CLCD controller.
370              */
371             return true;
372         }
373     default:
374         break;
375     }
376 
377 cfgctrl_unimp:
378     qemu_log_mask(LOG_UNIMP,
379                   "arm_sysctl: Unimplemented SYS_CFGCTRL write of function "
380                   "0x%x DCC 0x%x site 0x%x position 0x%x device 0x%x\n",
381                   function, dcc, site, position, device);
382     return false;
383 }
384 
385 static void arm_sysctl_write(void *opaque, hwaddr offset,
386                              uint64_t val, unsigned size)
387 {
388     arm_sysctl_state *s = (arm_sysctl_state *)opaque;
389 
390     switch (offset) {
391     case 0x08: /* LED */
392         s->leds = val;
393         break;
394     case 0x0c: /* OSC0 */
395     case 0x10: /* OSC1 */
396     case 0x14: /* OSC2 */
397     case 0x18: /* OSC3 */
398     case 0x1c: /* OSC4 */
399         /* ??? */
400         break;
401     case 0x20: /* LOCK */
402         if (val == LOCK_VALUE)
403             s->lockval = val;
404         else
405             s->lockval = val & 0x7fff;
406         break;
407     case 0x28: /* CFGDATA1 */
408         /* ??? Need to implement this.  */
409         s->cfgdata1 = val;
410         break;
411     case 0x2c: /* CFGDATA2 */
412         /* ??? Need to implement this.  */
413         s->cfgdata2 = val;
414         break;
415     case 0x30: /* FLAGSSET */
416         s->flags |= val;
417         break;
418     case 0x34: /* FLAGSCLR */
419         s->flags &= ~val;
420         break;
421     case 0x38: /* NVFLAGSSET */
422         s->nvflags |= val;
423         break;
424     case 0x3c: /* NVFLAGSCLR */
425         s->nvflags &= ~val;
426         break;
427     case 0x40: /* RESETCTL */
428         switch (board_id(s)) {
429         case BOARD_ID_PB926:
430             if (s->lockval == LOCK_VALUE) {
431                 s->resetlevel = val;
432                 if (val & 0x100) {
433                     qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
434                 }
435             }
436             break;
437         case BOARD_ID_PBX:
438         case BOARD_ID_PBA8:
439             if (s->lockval == LOCK_VALUE) {
440                 s->resetlevel = val;
441                 if (val & 0x04) {
442                     qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
443                 }
444             }
445             break;
446         case BOARD_ID_VEXPRESS:
447         case BOARD_ID_EB:
448         default:
449             /* reserved: RAZ/WI */
450             break;
451         }
452         break;
453     case 0x44: /* PCICTL */
454         /* nothing to do.  */
455         break;
456     case 0x4c: /* FLASH */
457         break;
458     case 0x50: /* CLCD */
459         switch (board_id(s)) {
460         case BOARD_ID_PB926:
461             /* On 926 bits 13:8 are R/O, bits 1:0 control
462              * the mux that defines how to interpret the PL110
463              * graphics format, and other bits are r/w but we
464              * don't implement them to do anything.
465              */
466             s->sys_clcd &= 0x3f00;
467             s->sys_clcd |= val & ~0x3f00;
468             qemu_set_irq(s->pl110_mux_ctrl, val & 3);
469             break;
470         case BOARD_ID_EB:
471             /* The EB is the same except that there is no mux since
472              * the EB has a PL111.
473              */
474             s->sys_clcd &= 0x3f00;
475             s->sys_clcd |= val & ~0x3f00;
476             break;
477         case BOARD_ID_PBA8:
478         case BOARD_ID_PBX:
479             /* On PBA8 and PBX bit 7 is r/w and all other bits
480              * are either r/o or RAZ/WI.
481              */
482             s->sys_clcd &= (1 << 7);
483             s->sys_clcd |= val & ~(1 << 7);
484             break;
485         case BOARD_ID_VEXPRESS:
486         default:
487             /* On VExpress this register is unimplemented and will RAZ/WI */
488             break;
489         }
490         break;
491     case 0x54: /* CLCDSER */
492     case 0x64: /* DMAPSR0 */
493     case 0x68: /* DMAPSR1 */
494     case 0x6c: /* DMAPSR2 */
495     case 0x70: /* IOSEL */
496     case 0x74: /* PLDCTL */
497     case 0x80: /* BUSID */
498     case 0x84: /* PROCID0 */
499     case 0x88: /* PROCID1 */
500     case 0x8c: /* OSCRESET0 */
501     case 0x90: /* OSCRESET1 */
502     case 0x94: /* OSCRESET2 */
503     case 0x98: /* OSCRESET3 */
504     case 0x9c: /* OSCRESET4 */
505         break;
506     case 0xa0: /* SYS_CFGDATA */
507         if (board_id(s) != BOARD_ID_VEXPRESS) {
508             goto bad_reg;
509         }
510         s->sys_cfgdata = val;
511         return;
512     case 0xa4: /* SYS_CFGCTRL */
513         if (board_id(s) != BOARD_ID_VEXPRESS) {
514             goto bad_reg;
515         }
516         /* Undefined bits [19:18] are RAZ/WI, and writing to
517          * the start bit just triggers the action; it always reads
518          * as zero.
519          */
520         s->sys_cfgctrl = val & ~((3 << 18) | (1 << 31));
521         if (val & (1 << 31)) {
522             /* Start bit set -- actually do something */
523             unsigned int dcc = extract32(s->sys_cfgctrl, 26, 4);
524             unsigned int function = extract32(s->sys_cfgctrl, 20, 6);
525             unsigned int site = extract32(s->sys_cfgctrl, 16, 2);
526             unsigned int position = extract32(s->sys_cfgctrl, 12, 4);
527             unsigned int device = extract32(s->sys_cfgctrl, 0, 12);
528             s->sys_cfgstat = 1;            /* complete */
529             if (s->sys_cfgctrl & (1 << 30)) {
530                 if (!vexpress_cfgctrl_write(s, dcc, function, site, position,
531                                             device, s->sys_cfgdata)) {
532                     s->sys_cfgstat |= 2;        /* error */
533                 }
534             } else {
535                 uint32_t val;
536                 if (!vexpress_cfgctrl_read(s, dcc, function, site, position,
537                                            device, &val)) {
538                     s->sys_cfgstat |= 2;        /* error */
539                 } else {
540                     s->sys_cfgdata = val;
541                 }
542             }
543         }
544         s->sys_cfgctrl &= ~(1 << 31);
545         return;
546     case 0xa8: /* SYS_CFGSTAT */
547         if (board_id(s) != BOARD_ID_VEXPRESS) {
548             goto bad_reg;
549         }
550         s->sys_cfgstat = val & 3;
551         return;
552     default:
553     bad_reg:
554         qemu_log_mask(LOG_GUEST_ERROR,
555                       "arm_sysctl_write: Bad register offset 0x%x\n",
556                       (int)offset);
557         return;
558     }
559 }
560 
561 static const MemoryRegionOps arm_sysctl_ops = {
562     .read = arm_sysctl_read,
563     .write = arm_sysctl_write,
564     .endianness = DEVICE_NATIVE_ENDIAN,
565 };
566 
567 static void arm_sysctl_gpio_set(void *opaque, int line, int level)
568 {
569     arm_sysctl_state *s = (arm_sysctl_state *)opaque;
570     switch (line) {
571     case ARM_SYSCTL_GPIO_MMC_WPROT:
572     {
573         /* For PB926 and EB write-protect is bit 2 of SYS_MCI;
574          * for all later boards it is bit 1.
575          */
576         int bit = 2;
577         if ((board_id(s) == BOARD_ID_PB926) || (board_id(s) == BOARD_ID_EB)) {
578             bit = 4;
579         }
580         s->sys_mci &= ~bit;
581         if (level) {
582             s->sys_mci |= bit;
583         }
584         break;
585     }
586     case ARM_SYSCTL_GPIO_MMC_CARDIN:
587         s->sys_mci &= ~1;
588         if (level) {
589             s->sys_mci |= 1;
590         }
591         break;
592     }
593 }
594 
595 static void arm_sysctl_init(Object *obj)
596 {
597     DeviceState *dev = DEVICE(obj);
598     SysBusDevice *sd = SYS_BUS_DEVICE(obj);
599     arm_sysctl_state *s = ARM_SYSCTL(obj);
600 
601     memory_region_init_io(&s->iomem, OBJECT(dev), &arm_sysctl_ops, s,
602                           "arm-sysctl", 0x1000);
603     sysbus_init_mmio(sd, &s->iomem);
604     qdev_init_gpio_in(dev, arm_sysctl_gpio_set, 2);
605     qdev_init_gpio_out(dev, &s->pl110_mux_ctrl, 1);
606 }
607 
608 static void arm_sysctl_realize(DeviceState *d, Error **errp)
609 {
610     arm_sysctl_state *s = ARM_SYSCTL(d);
611 
612     s->db_clock = g_new0(uint32_t, s->db_num_clocks);
613 }
614 
615 static void arm_sysctl_finalize(Object *obj)
616 {
617     arm_sysctl_state *s = ARM_SYSCTL(obj);
618 
619     g_free(s->db_voltage);
620     g_free(s->db_clock);
621     g_free(s->db_clock_reset);
622 }
623 
624 static Property arm_sysctl_properties[] = {
625     DEFINE_PROP_UINT32("sys_id", arm_sysctl_state, sys_id, 0),
626     DEFINE_PROP_UINT32("proc_id", arm_sysctl_state, proc_id, 0),
627     /* Daughterboard power supply voltages (as reported via SYS_CFG) */
628     DEFINE_PROP_ARRAY("db-voltage", arm_sysctl_state, db_num_vsensors,
629                       db_voltage, qdev_prop_uint32, uint32_t),
630     /* Daughterboard clock reset values (as reported via SYS_CFG) */
631     DEFINE_PROP_ARRAY("db-clock", arm_sysctl_state, db_num_clocks,
632                       db_clock_reset, qdev_prop_uint32, uint32_t),
633     DEFINE_PROP_END_OF_LIST(),
634 };
635 
636 static void arm_sysctl_class_init(ObjectClass *klass, void *data)
637 {
638     DeviceClass *dc = DEVICE_CLASS(klass);
639 
640     dc->realize = arm_sysctl_realize;
641     dc->reset = arm_sysctl_reset;
642     dc->vmsd = &vmstate_arm_sysctl;
643     dc->props = arm_sysctl_properties;
644 }
645 
646 static const TypeInfo arm_sysctl_info = {
647     .name          = TYPE_ARM_SYSCTL,
648     .parent        = TYPE_SYS_BUS_DEVICE,
649     .instance_size = sizeof(arm_sysctl_state),
650     .instance_init = arm_sysctl_init,
651     .instance_finalize = arm_sysctl_finalize,
652     .class_init    = arm_sysctl_class_init,
653 };
654 
655 static void arm_sysctl_register_types(void)
656 {
657     type_register_static(&arm_sysctl_info);
658 }
659 
660 type_init(arm_sysctl_register_types)
661