@@ -17,6 +17,7 @@ config ARM_VIRT
select PL011 # UART
select PL031 # RTC
select PL061 # GPIO
+ select GPIO_PWR
select PLATFORM_BUS
select SMBIOS
select VIRTIO_MMIO
@@ -147,6 +147,7 @@ static const MemMapEntry base_memmap[] = {
[VIRT_RTC] = { 0x09010000, 0x00001000 },
[VIRT_FW_CFG] = { 0x09020000, 0x00000018 },
[VIRT_GPIO] = { 0x09030000, 0x00001000 },
+ [VIRT_SECURE_GPIO] = { 0x09031000, 0x00001000 },
[VIRT_SECURE_UART] = { 0x09040000, 0x00001000 },
[VIRT_SMMU] = { 0x09050000, 0x00020000 },
[VIRT_PCDIMM_ACPI] = { 0x09070000, MEMORY_HOTPLUG_IO_LEN },
@@ -189,6 +190,7 @@ static const int a15irqmap[] = {
[VIRT_GPIO] = 7,
[VIRT_SECURE_UART] = 8,
[VIRT_ACPI_GED] = 9,
+ [VIRT_SECURE_GPIO] = 10,
[VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */
[VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */
[VIRT_SMMU] = 74, /* ...to 74 + NUM_SMMU_IRQS - 1 */
@@ -864,6 +866,24 @@ static void create_gpio(const VirtMachineState *vms)
g_free(nodename);
}
+static void create_gpio_secure(const VirtMachineState *vms)
+{
+ DeviceState *pl061_dev;
+ static DeviceState *gpio_pwr_dev;
+
+ hwaddr base = vms->memmap[VIRT_SECURE_GPIO].base;
+ int irq = vms->irqmap[VIRT_SECURE_GPIO];
+
+ pl061_dev = sysbus_create_simple("pl061", base,
+ qdev_get_gpio_in(vms->gic, irq));
+
+ gpio_pwr_dev = sysbus_create_simple("gpio-pwr", -1,
+ qdev_get_gpio_in(pl061_dev, 3));
+
+ qdev_connect_gpio_out(pl061_dev, 3, qdev_get_gpio_in(gpio_pwr_dev, 3));
+ qdev_connect_gpio_out(pl061_dev, 4, qdev_get_gpio_in(gpio_pwr_dev, 4));
+}
+
static void create_virtio_devices(const VirtMachineState *vms)
{
int i;
@@ -1993,6 +2013,10 @@ static void machvirt_init(MachineState *machine)
create_gpio(vms);
}
+ if (vms->secure) {
+ create_gpio_secure(vms);
+ }
+
/* connect powerdown request */
vms->powerdown_notifier.notify = virt_powerdown_req;
qemu_register_powerdown_notifier(&vms->powerdown_notifier);
@@ -8,5 +8,8 @@ config PL061
config GPIO_KEY
bool
+config GPIO_PWR
+ bool
+
config SIFIVE_GPIO
bool
new file mode 100644
@@ -0,0 +1,83 @@
+/*
+ * 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
+ */
+
+#include "qemu/osdep.h"
+#include "hw/irq.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;
+ qemu_irq irq;
+};
+
+static void gpio_pwr_set_irq(void *opaque, int irq, int level)
+{
+ GPIO_PWR_State *s = (GPIO_PWR_State *)opaque;
+
+ qemu_set_irq(s->irq, 1);
+
+ if (level) {
+ return;
+ }
+
+ switch (irq) {
+ case 3:
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);
+ break;
+ case 4:
+ qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
+ break;
+ default:
+ printf("qemu; gpio_pwr: unknown interrupt %d lvl %d\n",
+ irq, level);
+ }
+}
+
+
+static void gpio_pwr_realize(DeviceState *dev, Error **errp)
+{
+ GPIO_PWR_State *s = GPIOPWR(dev);
+ SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+
+ sysbus_init_irq(sbd, &s->irq);
+ qdev_init_gpio_in(dev, gpio_pwr_set_irq, 8);
+}
+
+static void gpio_pwr_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->realize = gpio_pwr_realize;
+}
+
+static const TypeInfo gpio_pwr_info = {
+ .name = TYPE_GPIOPWR,
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(GPIO_PWR_State),
+ .class_init = gpio_pwr_class_init,
+};
+
+static void gpio_pwr_register_types(void)
+{
+ type_register_static(&gpio_pwr_info);
+}
+
+type_init(gpio_pwr_register_types)
@@ -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'))
@@ -81,6 +81,7 @@ enum {
VIRT_GPIO,
VIRT_SECURE_UART,
VIRT_SECURE_MEM,
+ VIRT_SECURE_GPIO,
VIRT_PCDIMM_ACPI,
VIRT_ACPI_GED,
VIRT_NVDIMM_ACPI,
Add secure pl061 for reset/power down machine from the secure world (Arm Trusted Firmware). Use the same gpio 3 and gpio 4 which were used by non acpi variant of linux power control gpios. Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org> --- This patch works together with ATF patch: https://github.com/muvarov/arm-trusted-firmware/commit/dd4401d8eb8e0f3018b335b81ce7a96d6cb16d0f Previus discussion for reboot issue was here: https://www.mail-archive.com/qemu-devel@nongnu.org/msg757705.html Regards, Maxim. hw/arm/Kconfig | 1 + hw/arm/virt.c | 24 +++++++++++++ hw/gpio/Kconfig | 3 ++ hw/gpio/gpio_pwr.c | 83 +++++++++++++++++++++++++++++++++++++++++++ hw/gpio/meson.build | 1 + include/hw/arm/virt.h | 1 + 6 files changed, 113 insertions(+) create mode 100644 hw/gpio/gpio_pwr.c