mirror of
https://github.com/qemu/qemu.git
synced 2024-12-06 02:03:38 +08:00
e8c56787cd
At present each hart's hartid in a RISC-V hart array is assigned the same value of its index in the hart array. But for a system that has multiple hart arrays, this is not the case any more. Add a new "hartid-base" property so that hartid number can be assigned based on the property value. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
94 lines
2.7 KiB
C
94 lines
2.7 KiB
C
/*
|
|
* QEMU RISCV Hart Array
|
|
*
|
|
* Copyright (c) 2017 SiFive, Inc.
|
|
*
|
|
* Holds the state of a homogeneous 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 "qemu/module.h"
|
|
#include "sysemu/reset.h"
|
|
#include "hw/sysbus.h"
|
|
#include "target/riscv/cpu.h"
|
|
#include "hw/qdev-properties.h"
|
|
#include "hw/riscv/riscv_hart.h"
|
|
|
|
static Property riscv_harts_props[] = {
|
|
DEFINE_PROP_UINT32("num-harts", RISCVHartArrayState, num_harts, 1),
|
|
DEFINE_PROP_UINT32("hartid-base", RISCVHartArrayState, hartid_base, 0),
|
|
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_hart_realize(RISCVHartArrayState *s, int idx,
|
|
char *cpu_type, Error **errp)
|
|
{
|
|
Error *err = NULL;
|
|
|
|
object_initialize_child(OBJECT(s), "harts[*]", &s->harts[idx],
|
|
sizeof(RISCVCPU), cpu_type,
|
|
&error_abort, NULL);
|
|
s->harts[idx].env.mhartid = s->hartid_base + idx;
|
|
qemu_register_reset(riscv_harts_cpu_reset, &s->harts[idx]);
|
|
object_property_set_bool(OBJECT(&s->harts[idx]), true,
|
|
"realized", &err);
|
|
if (err) {
|
|
error_propagate(errp, err);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void riscv_harts_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
RISCVHartArrayState *s = RISCV_HART_ARRAY(dev);
|
|
int n;
|
|
|
|
s->harts = g_new0(RISCVCPU, s->num_harts);
|
|
|
|
for (n = 0; n < s->num_harts; n++) {
|
|
riscv_hart_realize(s, n, s->cpu_type, errp);
|
|
}
|
|
}
|
|
|
|
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)
|