Yaya48
cf256aa081
Upstream: https://gitlab.com/qemu-project/qemu.git Upstream-Commit: d2e570cc0f97b936902a5b1b86b73c0f5998b475
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
|
|
* GPIO qemu power controller
|
|
*
|
|
* Copyright (c) 2020 Linaro Limited
|
|
*
|
|
* Author: Maxim Uvarov <[email protected]>
|
|
*
|
|
* Virtual gpio driver which can be used on top of pl061
|
|
* to reboot and shutdown qemu virtual machine. One of use
|
|
* case is gpio driver for secure world application (ARM
|
|
* Trusted Firmware.).
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
* SPDX-License-Identifier: GPL-2.0-or-later
|
|
*/
|
|
|
|
/*
|
|
* QEMU interface:
|
|
* two named input GPIO lines:
|
|
* 'reset' : when asserted, trigger system reset
|
|
* 'shutdown' : when asserted, trigger system shutdown
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "hw/core/sysbus.h"
|
|
#include "system/runstate.h"
|
|
|
|
#define TYPE_GPIOPWR "gpio-pwr"
|
|
OBJECT_DECLARE_SIMPLE_TYPE(GPIO_PWR_State, GPIOPWR)
|
|
|
|
struct GPIO_PWR_State {
|
|
SysBusDevice parent_obj;
|
|
};
|
|
|
|
static void gpio_pwr_reset(void *opaque, int n, int level)
|
|
{
|
|
if (level) {
|
|
qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
|
|
}
|
|
}
|
|
|
|
static void gpio_pwr_shutdown(void *opaque, int n, int level)
|
|
{
|
|
if (level) {
|
|
qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
|
|
}
|
|
}
|
|
|
|
static void gpio_pwr_init(Object *obj)
|
|
{
|
|
DeviceState *dev = DEVICE(obj);
|
|
|
|
qdev_init_gpio_in_named(dev, gpio_pwr_reset, "reset", 1);
|
|
qdev_init_gpio_in_named(dev, gpio_pwr_shutdown, "shutdown", 1);
|
|
}
|
|
|
|
static const TypeInfo gpio_pwr_info = {
|
|
.name = TYPE_GPIOPWR,
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(GPIO_PWR_State),
|
|
.instance_init = gpio_pwr_init,
|
|
};
|
|
|
|
static void gpio_pwr_register_types(void)
|
|
{
|
|
type_register_static(&gpio_pwr_info);
|
|
}
|
|
|
|
type_init(gpio_pwr_register_types)
|