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PPC: E500: Hook up power off GPIO to GPIO controller 

Now that we have a working GPIO controller on the virt machine, we can use
one pin to notify QEMU that the guests wants to power off the system.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf 2014-10-01 16:05:47 +02:00
parent b88e77f493
commit 016f775898
1 changed files with 24 additions and 0 deletions
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24
hw/ppc/e500.c
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@ -129,6 +129,8 @@ static void create_dt_mpc8xxx_gpio(void *fdt, const char *soc, const char *mpic)
hwaddr mmio0 = MPC8XXX_GPIO_OFFSET;
int irq0 = MPC8XXX_GPIO_IRQ;
gchar *node = g_strdup_printf("%s/gpio@%"PRIx64, soc, mmio0);
gchar *poweroff = g_strdup_printf("%s/power-off", soc);
int gpio_ph;
qemu_fdt_add_subnode(fdt, node);
qemu_fdt_setprop_string(fdt, node, "compatible", "fsl,qoriq-gpio");
@ -137,8 +139,17 @@ static void create_dt_mpc8xxx_gpio(void *fdt, const char *soc, const char *mpic)
qemu_fdt_setprop_phandle(fdt, node, "interrupt-parent", mpic);
qemu_fdt_setprop_cells(fdt, node, "#gpio-cells", 2);
qemu_fdt_setprop(fdt, node, "gpio-controller", NULL, 0);
gpio_ph = qemu_fdt_alloc_phandle(fdt);
qemu_fdt_setprop_cell(fdt, node, "phandle", gpio_ph);
qemu_fdt_setprop_cell(fdt, node, "linux,phandle", gpio_ph);
/* Power Off Pin */
qemu_fdt_add_subnode(fdt, poweroff);
qemu_fdt_setprop_string(fdt, poweroff, "compatible", "gpio-poweroff");
qemu_fdt_setprop_cells(fdt, poweroff, "gpios", gpio_ph, 0, 0);
g_free(node);
g_free(poweroff);
}
static int ppce500_load_device_tree(MachineState *machine,
@ -641,6 +652,13 @@ static qemu_irq *ppce500_init_mpic(PPCE500Params *params, MemoryRegion *ccsr,
return mpic;
}
static void ppce500_power_off(void *opaque, int line, int on)
{
if (on) {
qemu_system_shutdown_request();
}
}
void ppce500_init(MachineState *machine, PPCE500Params *params)
{
MemoryRegion *address_space_mem = get_system_memory();
@ -793,12 +811,18 @@ void ppce500_init(MachineState *machine, PPCE500Params *params)
}
if (params->has_mpc8xxx_gpio) {
qemu_irq poweroff_irq;
dev = qdev_create(NULL, "mpc8xxx_gpio");
s = SYS_BUS_DEVICE(dev);
qdev_init_nofail(dev);
sysbus_connect_irq(s, 0, mpic[MPC8XXX_GPIO_IRQ]);
memory_region_add_subregion(ccsr_addr_space, MPC8XXX_GPIO_OFFSET,
sysbus_mmio_get_region(s, 0));
/* Power Off GPIO at Pin 0 */
poweroff_irq = qemu_allocate_irq(ppce500_power_off, NULL, 0);
qdev_connect_gpio_out(dev, 0, poweroff_irq);
}
/* Load kernel. */