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/*
* QEMU SiFive Test Finisher
*
* Copyright (c) 2018 SiFive, Inc.
*
* Test finisher memory mapped device used to exit simulation
*
* 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 "hw/sysbus.h"
#include "qapi/error.h"
#include "qemu/log.h"
#include "qemu/module.h"
#include "sysemu/runstate.h"
#include "hw/misc/sifive_test.h"
#include "sysemu/sysemu.h"
static uint64_t sifive_test_read(void *opaque, hwaddr addr, unsigned int size)
{
return 0;
}
static void sifive_test_write(void *opaque, hwaddr addr,
uint64_t val64, unsigned int size)
{
if (addr == 0) {
int status = val64 & 0xffff;
int code = (val64 >> 16) & 0xffff;
switch (status) {
case FINISHER_FAIL:
qemu_system_shutdown_request_with_code(
SHUTDOWN_CAUSE_GUEST_PANIC, code);
return;
case FINISHER_PASS:
qemu_system_shutdown_request_with_code(
SHUTDOWN_CAUSE_GUEST_SHUTDOWN, code);
return;
case FINISHER_RESET:
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
return;
default:
break;
}
}
qemu_log_mask(LOG_GUEST_ERROR, "%s: write: addr=0x%x val=0x%016" PRIx64 "\n",
__func__, (int)addr, val64);
}
static const MemoryRegionOps sifive_test_ops = {
.read = sifive_test_read,
.write = sifive_test_write,
.endianness = DEVICE_NATIVE_ENDIAN,
.valid = {
.min_access_size = 2,
.max_access_size = 4
}
};
static void sifive_test_init(Object *obj)
{
SiFiveTestState *s = SIFIVE_TEST(obj);
memory_region_init_io(&s->mmio, obj, &sifive_test_ops, s,
TYPE_SIFIVE_TEST, 0x1000);
sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
}
static const TypeInfo sifive_test_info = {
.name = TYPE_SIFIVE_TEST,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(SiFiveTestState),
.instance_init = sifive_test_init,
};
static void sifive_test_register_types(void)
{
type_register_static(&sifive_test_info);
}
type_init(sifive_test_register_types)
/*
* Create Test device.
*/
DeviceState *sifive_test_create(hwaddr addr)
{
DeviceState *dev = qdev_new(TYPE_SIFIVE_TEST);
sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, addr);
return dev;
}
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