Re: [PATCH] hw/arm/sbsa-ref: add GIC node into DT

[Leif Lindholm]

On 2023-05-15 11:15, Peter Maydell wrote:
> On Mon, 15 May 2023 at 11:04, Marcin Juszkiewicz
> <marcin.juszkiewicz@linaro.org> wrote:
> > Let add GIC information into DeviceTree as part of SBSA-REF versioning.
> >
> > Trusted Firmware will read it and provide to next firmware level.
> >
> > Bumps platform version to 0.1 one so we can check is node is present.
>
> (Missing signed-off-by.)
>
> I thought the idea with the sbsa-ref dtb was that it was
> really just a minimal provision of data to the firmware,
> not a real DTB, and that (as on real hardware) creating
> the DTB to pass to the next level of the guest code was
> the job of the guest firmware.
>
> Why do we need to provide a full GIC DTB node ?

This was actually something we were discussing in private, but felt 
useful bringing public (for future reference if nothing else).
I believe this is a near-verbatim copy from the virt machine to kick 
that off :)

Longer-term, I want to be able to present different specific gic 
implementations through this interface.
I believe the 0.1 variant needs only the Distributor and Redistributors 
base addresses.

/
    Leif