On Tue, 12 Jan 2021 at 15:35, Andrew Jones <[email protected]> wrote:
>
> On Tue, Jan 12, 2021 at 05:30:58PM +0300, Maxim Uvarov wrote:
> > Add secure pl061 for reset/power down machine from
> > the secure world (Arm Trusted Firmware). Connect it
> > with gpio-pwr driver.
> > + /* connect secure pl061 to gpio-pwr */
> > + qdev_connect_gpio_out(pl061_dev, ATF_GPIO_POWEROFF,
> > + qdev_get_gpio_in_named(gpio_pwr_dev, "reset",
> > 0));
> > + qdev_connect_gpio_out(pl061_dev, ATF_GPIO_REBOOT,
> > + qdev_get_gpio_in_named(gpio_pwr_dev, "shutdown",
> > 0));
>
> I don't know anything about secure world, but it seems odd that we don't
> need to add anything to the DTB.
We should be adding something to the DTB, yes. Look at
how create_uart() does this -- you set the 'status' and
'secure-status' properties to indicate that the device is
secure-world only.
> > + if (vmc->no_secure_gpio) {
> > + vms->secure_gpio = false;
> > + } else {
> > + vms->secure_gpio = true;
> > + }
>
> nit: vms->secure_gpio = !vmc->no_secure_gpio
>
> But do we even need vms->secure_gpio? Why not just do
>
> if (vms->secure && !vmc->no_secure_gpio) {
> create_gpio_secure(vms, secure_sysmem);
> }
>
> in machvirt_init() ?
We're just following the same pattern as vmc->no_its/vms->its,
aren't we ?
thanks
-- PMM
