On 16.04.2012, at 10:07, Bhushan Bharat-R65777 wrote:
> Hi All,
>
> The "-watchdog-action shutdown" uses the monitor system_shutdown mechanism
> but this does not actually powerdown the system.
>
> In code, If there is pending powerdown_request
> (qemu_system_powerdown_request() called) then it try to raise an irq. What is
> that irq supposed to do. Currently it in NULL pointer so does not do anything.
>
> Code snapshot -- vl.c : main_loop_should_exit()
>
> ....
> if (qemu_powerdown_requested()) {
> monitor_protocol_event(QEVENT_POWERDOWN, NULL);
> qemu_irq_raise(qemu_system_powerdown);
> }
> . . . .
>
> Is the powerdown_request handling not complete?
The watchdog shutdown event is a soft power off. Imagine a PC where you press
the power button, the OS gets notified through ACPI that it's supposed to shut
down and shuts down the machine.
I don't know of any BookE system that has a comparable mechanism. We could
implement it through qemu-ga and fall back to hard power off maybe?
Alex
