Re: [PATCH] hw/arm/virt: Allow additions to the generated device tree

[Peter Maydell]

On Sun, 26 Sept 2021 at 19:34, Simon Glass <sjg@chromium.org> wrote:
>
> At present qemu creates a device tree automatically with the 'virt' generic
> virtual platform. This is very convenient in most cases but there is not
> much control over what is generated.
>
> Add a way to provide a device tree binary file with additional properties
> to add before booting. This provides flexibility for situations where
> Linux needs some tweak to operate correctly. It also allows configuration
> information to be passed to U-Boot, supporting verified boot, for example.

So, I'm strongly inclined to say "nope" here. The device
tree virt generates is supposed to entirely describe the
virtual hardware we pass to the guest. If a guest doesn't
work with that, then either we're generating bogus dtb info
or the guest is not handling the dtb we pass it, and one
or the other should be fixed.

thanks
-- PMM