On Tue, Jul 14, 2026 at 10:49 PM Charles Perry <[email protected]> wrote: > > On Thu, Jul 09, 2026 at 11:26:01PM +0530, Rahul Pathak wrote: > > This patch series adds a generic SBI MPXY extension > > implementation which provides an interface to interact > > with platform via supported message protocol (eg. RPMI) > > > > It also adds a mpxy command which uses the generic > > SBI MPXY interface and provides cli support to > > interact with supported message protocol. Currently > > it supports RISC-V RPMI message protocol. > > Hello Rahul, > > I'm happy to see that you're interested in RPMI support in U-Boot. > > Can you share with us the context in which you developed those patches? > i.e., what hardware are you using and how is the "mpxy" command used. > > Is "mpxy" mostly just for debugging or is it expected that a bootscript > would initialize the platform with calls to "mpxy"? > Hi Charles,
I have used QEMU RISC-V Virt platform (with OpenSBI + librpmi providing the RPMI firmware side) for its development, and in terms of use cases its both actually which you outlined - debugging and configuration. Debugging is the pretty obvious usecase where mpxy command allows anyone to access message protocol in case of RPMI, it lets you access any custom service group implemented without changing u-boot. Boot time tweaking of any attribute or any platform state changes via scripts is also possible as you mentioned. The configuration can be board specific and expressed in uboot environment scripts instead of compiled in driver code. Thanks Rahul
