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11#include "qemu/osdep.h"
12#include "hw/misc/arm11scu.h"
13#include "qemu/log.h"
14#include "qemu/module.h"
15
16static uint64_t mpcore_scu_read(void *opaque, hwaddr offset,
17 unsigned size)
18{
19 ARM11SCUState *s = (ARM11SCUState *)opaque;
20 int id;
21
22 switch (offset) {
23 case 0x00:
24 return s->control;
25 case 0x04:
26 id = ((1 << s->num_cpu) - 1) << 4;
27 return id | (s->num_cpu - 1);
28 case 0x08:
29 return 0;
30 case 0x0c:
31 return 0;
32 default:
33 qemu_log_mask(LOG_GUEST_ERROR,
34 "mpcore_priv_read: Bad offset %x\n", (int)offset);
35 return 0;
36 }
37}
38
39static void mpcore_scu_write(void *opaque, hwaddr offset,
40 uint64_t value, unsigned size)
41{
42 ARM11SCUState *s = (ARM11SCUState *)opaque;
43
44 switch (offset) {
45 case 0:
46 s->control = value & 1;
47 break;
48 case 0x0c:
49
50 break;
51 default:
52 qemu_log_mask(LOG_GUEST_ERROR,
53 "mpcore_priv_read: Bad offset %x\n", (int)offset);
54 }
55}
56
57static const MemoryRegionOps mpcore_scu_ops = {
58 .read = mpcore_scu_read,
59 .write = mpcore_scu_write,
60 .endianness = DEVICE_NATIVE_ENDIAN,
61};
62
63static void arm11_scu_realize(DeviceState *dev, Error **errp)
64{
65}
66
67static void arm11_scu_init(Object *obj)
68{
69 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
70 ARM11SCUState *s = ARM11_SCU(obj);
71
72 memory_region_init_io(&s->iomem, OBJECT(s),
73 &mpcore_scu_ops, s, "mpcore-scu", 0x100);
74 sysbus_init_mmio(sbd, &s->iomem);
75}
76
77static Property arm11_scu_properties[] = {
78 DEFINE_PROP_UINT32("num-cpu", ARM11SCUState, num_cpu, 1),
79 DEFINE_PROP_END_OF_LIST()
80};
81
82static void arm11_scu_class_init(ObjectClass *oc, void *data)
83{
84 DeviceClass *dc = DEVICE_CLASS(oc);
85
86 dc->realize = arm11_scu_realize;
87 dc->props = arm11_scu_properties;
88}
89
90static const TypeInfo arm11_scu_type_info = {
91 .name = TYPE_ARM11_SCU,
92 .parent = TYPE_SYS_BUS_DEVICE,
93 .instance_size = sizeof(ARM11SCUState),
94 .instance_init = arm11_scu_init,
95 .class_init = arm11_scu_class_init,
96};
97
98static void arm11_scu_register_types(void)
99{
100 type_register_static(&arm11_scu_type_info);
101}
102
103type_init(arm11_scu_register_types)
104