[PATCH 0/3] Timer events for OpenSBI

[Anup Patel]

On Thu, Apr 23, 2026 at 12:27 PM Nicholas Piggin <npiggin at gmail.com> wrote:
>
> On Wed, Apr 15, 2026 at 04:29:59PM +0530, Anup Patel wrote:
> > This series extends the sbi_timer framework to support
> > timer events usable from any part of OpenSBI. The platform
> > drivers in OpenSBI can use timer events for timeouts or
> > periodic checks.
> >
> > These patches can also be found in sbi_timer_imp_v1 branch
> > at: https://github.com/avpatel/opensbi.git
>
> What is your m mode use case for these, I would be interested
> in the context of reviewing it. Generally I thought it looks
> good.
>

We have a RPMI watchdog proposal under development. This
series will provide foundation for the PoC work of the RPMI
watchdog proposal. Basically, the OpenSBI firmware can emulate
RPMI watchdog over SBI MPXY channel for the supervisor software.
This OpenSBI can provide a separate watchdog for each supervisor
domain. In absence of HW watchdog for M-mode firmware, the PuC
firmware can also implement RPMI watchdog over RPMI shared
memory transport.

Regards,
Anup