1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
/*
* QEMU RISCV Hart Array
*
* Copyright (c) 2017 SiFive, Inc.
*
* Holds the state of a heterogenous array of RISC-V harts
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/sysbus.h"
#include "target/riscv/cpu.h"
#include "hw/riscv/riscv_hart.h"
static Property riscv_harts_props[] = {
DEFINE_PROP_UINT32("num-harts", RISCVHartArrayState, num_harts, 1),
DEFINE_PROP_STRING("cpu-type", RISCVHartArrayState, cpu_type),
DEFINE_PROP_END_OF_LIST(),
};
static void riscv_harts_cpu_reset(void *opaque)
{
RISCVCPU *cpu = opaque;
cpu_reset(CPU(cpu));
}
static void riscv_harts_realize(DeviceState *dev, Error **errp)
{
RISCVHartArrayState *s = RISCV_HART_ARRAY(dev);
Error *err = NULL;
int n;
s->harts = g_new0(RISCVCPU, s->num_harts);
for (n = 0; n < s->num_harts; n++) {
object_initialize_child(OBJECT(s), "harts[*]", &s->harts[n],
sizeof(RISCVCPU), s->cpu_type,
&error_abort, NULL);
s->harts[n].env.mhartid = n;
qemu_register_reset(riscv_harts_cpu_reset, &s->harts[n]);
object_property_set_bool(OBJECT(&s->harts[n]), true,
"realized", &err);
if (err) {
error_propagate(errp, err);
return;
}
}
}
static void riscv_harts_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->props = riscv_harts_props;
dc->realize = riscv_harts_realize;
}
static const TypeInfo riscv_harts_info = {
.name = TYPE_RISCV_HART_ARRAY,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(RISCVHartArrayState),
.class_init = riscv_harts_class_init,
};
static void riscv_harts_register_types(void)
{
type_register_static(&riscv_harts_info);
}
type_init(riscv_harts_register_types)
|
