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21#include "qemu/osdep.h"
22#include "qemu/log.h"
23#include "trace.h"
24#include "qapi/error.h"
25#include "sysemu/sysemu.h"
26#include "hw/sysbus.h"
27#include "hw/registerfields.h"
28#include "hw/misc/armsse-cpuid.h"
29
30REG32(CPUID, 0x0)
31REG32(PID4, 0xfd0)
32REG32(PID5, 0xfd4)
33REG32(PID6, 0xfd8)
34REG32(PID7, 0xfdc)
35REG32(PID0, 0xfe0)
36REG32(PID1, 0xfe4)
37REG32(PID2, 0xfe8)
38REG32(PID3, 0xfec)
39REG32(CID0, 0xff0)
40REG32(CID1, 0xff4)
41REG32(CID2, 0xff8)
42REG32(CID3, 0xffc)
43
44
45static const int sysinfo_id[] = {
46 0x04, 0x00, 0x00, 0x00,
47 0x58, 0xb8, 0x0b, 0x00,
48 0x0d, 0xf0, 0x05, 0xb1,
49};
50
51static uint64_t armsse_cpuid_read(void *opaque, hwaddr offset,
52 unsigned size)
53{
54 ARMSSECPUID *s = ARMSSE_CPUID(opaque);
55 uint64_t r;
56
57 switch (offset) {
58 case A_CPUID:
59 r = s->cpuid;
60 break;
61 case A_PID4 ... A_CID3:
62 r = sysinfo_id[(offset - A_PID4) / 4];
63 break;
64 default:
65 qemu_log_mask(LOG_GUEST_ERROR,
66 "SSE CPU_IDENTITY read: bad offset 0x%x\n", (int)offset);
67 r = 0;
68 break;
69 }
70 trace_armsse_cpuid_read(offset, r, size);
71 return r;
72}
73
74static void armsse_cpuid_write(void *opaque, hwaddr offset,
75 uint64_t value, unsigned size)
76{
77 trace_armsse_cpuid_write(offset, value, size);
78
79 qemu_log_mask(LOG_GUEST_ERROR,
80 "SSE CPU_IDENTITY: write to RO offset 0x%x\n", (int)offset);
81}
82
83static const MemoryRegionOps armsse_cpuid_ops = {
84 .read = armsse_cpuid_read,
85 .write = armsse_cpuid_write,
86 .endianness = DEVICE_LITTLE_ENDIAN,
87
88 .impl.min_access_size = 4,
89 .impl.max_access_size = 4,
90 .valid.min_access_size = 1,
91 .valid.max_access_size = 4,
92};
93
94static Property armsse_cpuid_props[] = {
95 DEFINE_PROP_UINT32("CPUID", ARMSSECPUID, cpuid, 0),
96 DEFINE_PROP_END_OF_LIST()
97};
98
99static void armsse_cpuid_init(Object *obj)
100{
101 SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
102 ARMSSECPUID *s = ARMSSE_CPUID(obj);
103
104 memory_region_init_io(&s->iomem, obj, &armsse_cpuid_ops,
105 s, "armsse-cpuid", 0x1000);
106 sysbus_init_mmio(sbd, &s->iomem);
107}
108
109static void armsse_cpuid_class_init(ObjectClass *klass, void *data)
110{
111 DeviceClass *dc = DEVICE_CLASS(klass);
112
113
114
115
116
117
118 dc->props = armsse_cpuid_props;
119}
120
121static const TypeInfo armsse_cpuid_info = {
122 .name = TYPE_ARMSSE_CPUID,
123 .parent = TYPE_SYS_BUS_DEVICE,
124 .instance_size = sizeof(ARMSSECPUID),
125 .instance_init = armsse_cpuid_init,
126 .class_init = armsse_cpuid_class_init,
127};
128
129static void armsse_cpuid_register_types(void)
130{
131 type_register_static(&armsse_cpuid_info);
132}
133
134type_init(armsse_cpuid_register_types);
135