Hi,
On 10/09/2024 15:34, Andrei Cherechesu (OSS) wrote:
From: Andrei Cherechesu <andrei.cherech...@nxp.com>
Added support for NXP S32CC platforms (S32G2, S32G3, S32R45),
which need SCMI over SMC calls forwarded to the firmware
running at EL3 (TF-A). Linux relies on the SCMI Platform
for system services such as clocking, reset, etc.
Is it SMCI as in the Arm spec? If so, this should not be platform specific.
Furthermore, I was under the impression that we can't blindly forward
everything from a domain to the firmware. While it might be okayish for
dom0, you also seem to give access to all the domains on the system is
it intended?
Anyway, there is a series on the ML to add a mediator for SCMI in Xen
(see [1]). I think it would be preferable to focus on getting it merged
as it would benefit everyone and increase the security posture (we could
restrict access).
Cheers,
[1]
https://lore.kernel.org/xen-devel/e9dadd96aa5b64b9232e10a083ce393af620adde.1639472078.git.oleksii_moisie...@epam.com
Cheers,
--
Julien Grall
