| Message ID | 20210112143058.12159-2-maxim.uvarov@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | arm-virt: add secure pl061 for reset/power down | expand |
On Tue, Jan 12, 2021 at 6:36 AM Maxim Uvarov <maxim.uvarov@linaro.org> wrote: > Implement gpio-pwr driver to allow reboot and poweroff machine. > This is simple driver with just 2 gpios lines. Current use case > is to reboot and poweroff virt machine in secure mode. Secure > pl066 gpio chip is needed for that. > > Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org> > Reviewed-by: Hao Wu <wuhaotsh@google.com> > --- > hw/gpio/Kconfig | 3 ++ > hw/gpio/gpio_pwr.c | 70 +++++++++++++++++++++++++++++++++++++++++++++ > hw/gpio/meson.build | 1 + > 3 files changed, 74 insertions(+) > create mode 100644 hw/gpio/gpio_pwr.c > > diff --git a/hw/gpio/Kconfig b/hw/gpio/Kconfig > index b6fdaa2586..f0e7405f6e 100644 > --- a/hw/gpio/Kconfig > +++ b/hw/gpio/Kconfig > @@ -8,5 +8,8 @@ config PL061 > config GPIO_KEY > bool > > +config GPIO_PWR > + bool > + > config SIFIVE_GPIO > bool > diff --git a/hw/gpio/gpio_pwr.c b/hw/gpio/gpio_pwr.c > new file mode 100644 > index 0000000000..8ed8d5d24f > --- /dev/null > +++ b/hw/gpio/gpio_pwr.c > @@ -0,0 +1,70 @@ > +/* > + * GPIO qemu power controller > + * > + * Copyright (c) 2020 Linaro Limited > + * > + * Author: Maxim Uvarov <maxim.uvarov@linaro.org> > + * > + * 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/sysbus.h" > +#include "sysemu/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_reset_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) > diff --git a/hw/gpio/meson.build b/hw/gpio/meson.build > index 5c0a7d7b95..79568f00ce 100644 > --- a/hw/gpio/meson.build > +++ b/hw/gpio/meson.build > @@ -1,5 +1,6 @@ > softmmu_ss.add(when: 'CONFIG_E500', if_true: files('mpc8xxx.c')) > softmmu_ss.add(when: 'CONFIG_GPIO_KEY', if_true: files('gpio_key.c')) > +softmmu_ss.add(when: 'CONFIG_GPIO_PWR', if_true: files('gpio_pwr.c')) > softmmu_ss.add(when: 'CONFIG_MAX7310', if_true: files('max7310.c')) > softmmu_ss.add(when: 'CONFIG_PL061', if_true: files('pl061.c')) > softmmu_ss.add(when: 'CONFIG_PUV3', if_true: files('puv3_gpio.c')) > -- > 2.17.1 > > > <div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jan 12, 2021 at 6:36 AM Maxim Uvarov <<a href="mailto:maxim.uvarov@linaro.org">maxim.uvarov@linaro.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Implement gpio-pwr driver to allow reboot and poweroff machine.<br> This is simple driver with just 2 gpios lines. Current use case<br> is to reboot and poweroff virt machine in secure mode. Secure<br> pl066 gpio chip is needed for that.<br> <br> Signed-off-by: Maxim Uvarov <<a href="mailto:maxim.uvarov@linaro.org" target="_blank">maxim.uvarov@linaro.org</a>><br></blockquote><div>Reviewed-by: Hao Wu <<a href="mailto:wuhaotsh@google.com">wuhaotsh@google.com</a>> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> ---<br> hw/gpio/Kconfig | 3 ++<br> hw/gpio/gpio_pwr.c | 70 +++++++++++++++++++++++++++++++++++++++++++++<br> hw/gpio/meson.build | 1 +<br> 3 files changed, 74 insertions(+)<br> create mode 100644 hw/gpio/gpio_pwr.c<br> <br> diff --git a/hw/gpio/Kconfig b/hw/gpio/Kconfig<br> index b6fdaa2586..f0e7405f6e 100644<br> --- a/hw/gpio/Kconfig<br> +++ b/hw/gpio/Kconfig<br> @@ -8,5 +8,8 @@ config PL061<br> config GPIO_KEY<br> bool<br> <br> +config GPIO_PWR<br> + bool<br> +<br> config SIFIVE_GPIO<br> bool<br> diff --git a/hw/gpio/gpio_pwr.c b/hw/gpio/gpio_pwr.c<br> new file mode 100644<br> index 0000000000..8ed8d5d24f<br> --- /dev/null<br> +++ b/hw/gpio/gpio_pwr.c<br> @@ -0,0 +1,70 @@<br> +/*<br> + * GPIO qemu power controller<br> + *<br> + * Copyright (c) 2020 Linaro Limited<br> + *<br> + * Author: Maxim Uvarov <<a href="mailto:maxim.uvarov@linaro.org" target="_blank">maxim.uvarov@linaro.org</a>><br> + *<br> + * Virtual gpio driver which can be used on top of pl061<br> + * to reboot and shutdown qemu virtual machine. One of use<br> + * case is gpio driver for secure world application (ARM<br> + * Trusted Firmware.).<br> + *<br> + * This work is licensed under the terms of the GNU GPL, version 2 or later.<br> + * See the COPYING file in the top-level directory.<br> + * SPDX-License-Identifier: GPL-2.0-or-later<br> + */<br> +<br> +/*<br> + * QEMU interface:<br> + * two named input GPIO lines:<br> + * 'reset' : when asserted, trigger system reset<br> + * 'shutdown' : when asserted, trigger system shutdown<br> + */<br> +<br> +#include "qemu/osdep.h"<br> +#include "hw/sysbus.h"<br> +#include "sysemu/runstate.h"<br> +<br> +#define TYPE_GPIOPWR "gpio-pwr"<br> +OBJECT_DECLARE_SIMPLE_TYPE(GPIO_PWR_State, GPIOPWR)<br> +<br> +struct GPIO_PWR_State {<br> + SysBusDevice parent_obj;<br> +};<br> +<br> +static void gpio_pwr_reset(void *opaque, int n, int level)<br> +{<br> + if (!level) {<br> + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);<br> + }<br> +}<br> +<br> +static void gpio_pwr_shutdown(void *opaque, int n, int level)<br> +{<br> + if (!level) {<br> + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);<br> + }<br> +}<br> +<br> +static void gpio_pwr_init(Object *obj)<br> +{<br> + DeviceState *dev = DEVICE(obj);<br> +<br> + qdev_init_gpio_in_named(dev, gpio_pwr_reset, "reset", 1);<br> + qdev_init_gpio_in_named(dev, gpio_pwr_shutdown, "shutdown", 1);<br> +}<br> +<br> +static const TypeInfo gpio_pwr_info = {<br> + .name = TYPE_GPIOPWR,<br> + .parent = TYPE_SYS_BUS_DEVICE,<br> + .instance_size = sizeof(GPIO_PWR_State),<br> + .instance_init = gpio_pwr_init,<br> +};<br> +<br> +static void gpio_pwr_register_types(void)<br> +{<br> + type_register_static(&gpio_pwr_info);<br> +}<br> +<br> +type_init(gpio_pwr_register_types)<br> diff --git a/hw/gpio/meson.build b/hw/gpio/meson.build<br> index 5c0a7d7b95..79568f00ce 100644<br> --- a/hw/gpio/meson.build<br> +++ b/hw/gpio/meson.build<br> @@ -1,5 +1,6 @@<br> softmmu_ss.add(when: 'CONFIG_E500', if_true: files('mpc8xxx.c'))<br> softmmu_ss.add(when: 'CONFIG_GPIO_KEY', if_true: files('gpio_key.c'))<br> +softmmu_ss.add(when: 'CONFIG_GPIO_PWR', if_true: files('gpio_pwr.c'))<br> softmmu_ss.add(when: 'CONFIG_MAX7310', if_true: files('max7310.c'))<br> softmmu_ss.add(when: 'CONFIG_PL061', if_true: files('pl061.c'))<br> softmmu_ss.add(when: 'CONFIG_PUV3', if_true: files('puv3_gpio.c'))<br> -- <br> 2.17.1<br> <br> <br> </blockquote></div></div>
diff --git a/hw/gpio/Kconfig b/hw/gpio/Kconfig index b6fdaa2586..f0e7405f6e 100644 --- a/hw/gpio/Kconfig +++ b/hw/gpio/Kconfig @@ -8,5 +8,8 @@ config PL061 config GPIO_KEY bool +config GPIO_PWR + bool + config SIFIVE_GPIO bool diff --git a/hw/gpio/gpio_pwr.c b/hw/gpio/gpio_pwr.c new file mode 100644 index 0000000000..8ed8d5d24f --- /dev/null +++ b/hw/gpio/gpio_pwr.c @@ -0,0 +1,70 @@ +/* + * GPIO qemu power controller + * + * Copyright (c) 2020 Linaro Limited + * + * Author: Maxim Uvarov <maxim.uvarov@linaro.org> + * + * 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/sysbus.h" +#include "sysemu/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_reset_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) diff --git a/hw/gpio/meson.build b/hw/gpio/meson.build index 5c0a7d7b95..79568f00ce 100644 --- a/hw/gpio/meson.build +++ b/hw/gpio/meson.build @@ -1,5 +1,6 @@ softmmu_ss.add(when: 'CONFIG_E500', if_true: files('mpc8xxx.c')) softmmu_ss.add(when: 'CONFIG_GPIO_KEY', if_true: files('gpio_key.c')) +softmmu_ss.add(when: 'CONFIG_GPIO_PWR', if_true: files('gpio_pwr.c')) softmmu_ss.add(when: 'CONFIG_MAX7310', if_true: files('max7310.c')) softmmu_ss.add(when: 'CONFIG_PL061', if_true: files('pl061.c')) softmmu_ss.add(when: 'CONFIG_PUV3', if_true: files('puv3_gpio.c'))
Implement gpio-pwr driver to allow reboot and poweroff machine. This is simple driver with just 2 gpios lines. Current use case is to reboot and poweroff virt machine in secure mode. Secure pl066 gpio chip is needed for that. Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org> --- hw/gpio/Kconfig | 3 ++ hw/gpio/gpio_pwr.c | 70 +++++++++++++++++++++++++++++++++++++++++++++ hw/gpio/meson.build | 1 + 3 files changed, 74 insertions(+) create mode 100644 hw/gpio/gpio_pwr.c -- 2.17.1