On Wed, Sep 4, 2019 at 8:23 PM Peter Maydell <peter.mayd...@linaro.org> wrote:
>
> On Wed, 4 Sep 2019 at 18:06, Shlomo Pongratz <shlomopongr...@gmail.com> wrote:
> >
> > On Wed, Sep 4, 2019 at 5:50 PM Peter Maydell <peter.mayd...@linaro.org>
> > wrote:
> > >
> > > On Wed, 4 Sep 2019 at 15:41, Shlomo Pongratz <shlomopongr...@gmail.com>
> > > wrote:
> > > > Is there a specific configuration that I need to add to the Linux
> > > > {dot}config?
> > > > Is this because the machine selection i.e. doesn't support it.
> > > > Is this qemu-system-aarch64 issue?
> > >
> > > You don't specify your command line. Different machines
> > > behave in different ways. In general power-down is
> > > implemented by "model the way it works on hardware",
> > > so whether such a mechanism even exists depends on which
> > > machine we're modelling.
>
> > Sorry, I've forgot to specify the machine.
> > The machine is virt and the CPU is cortex-a57
>
> Thanks. This should work -- it does for me. The mechanism for
> the virt board is via a GPIO line which is identified as the
> power-off mechanism in the device tree or ACPI table which QEMU
> passes to the guest. You're probably missing something from
> your guest kernel config which is needed for this. I'm
> pretty sure the aarch64 defconfig works.
>
> Check you have CONFIG_GPIO_PL061 enabled. That's definitely
> necessary but may not be sufficient (perhaps also
> CONFIG_KEYBOARD_GPIO is required, not sure about that one).
>
> thanks
> -- PMM
Hi,
Thank you,
I've added the GONFIG_GPIO_PL061 (isn't it emulated on realview only?)
and CONFIG_KEYBOARD_GPIO and also added The CONFIG_POWER_RESET_GPIO.
But the QEMU still doesn't exit after halt -f.
Is there a Linux config file that is known to be able to make QEMU
exit that I and use as starting point?
I want to create a Linux (kernel) that is expected to run only as a guest.
best regards,
S.P.
