Re: Possible progress on M Platform?

Philipp Tomsich <philipp.tomsich@...>


The Platforms effort is being reorganized and we'll spin up a task group for RVM-CSI (a source-level abstraction framework) up in the near future.
RVM-CSI is very much in focus (for the Software HC's ecosystem efforts), and the goal is to sprint towards a first draft late in the year.
The discussions have been going on for a while and led to Alibaba donating their documentation and sources.

The plan is to draw inspiration from Alibaba's donated abstraction layer (just as well as what our other members bring to the table), from what exists in competing ecosystems, and from the abstractions standardized in C17 a.k.a. ISO/IEC 9899:2018 (e.g., atomics, mutexes, conditions, threads, memory management) to specify a thin (as in "flexible" and "unintrusive"), best-in-class abstraction with C-language bindings for a self-contained small subset (enough to bring up a platform and handle interrupts) of the platform as phase 1.

Follow-on efforts will then add abstractions for additional features of common platforms (e.g. common peripherals, networking, data processing, AI/ML, …) and standardize language bindings for C++ and Rust.


On Mon, 7 Feb 2022 at 21:38, Greg Favor <gfavor@...> wrote:

I'm cc'ing the chairs of the Software HC and the Platforms HSC.  All platform efforts are being re-organized a bit as we speak (compared to thus far one group was trying to address a number of needs at both HSC and TG levels but, not surprisingly, only able to focus on one TG effort).  There will be a separate TG created to focus on the "M" platform (under a new name).  Philipp and Kumar will be driving setting that up and will be interested to talk with you.


P.S. This email list also needs to be replaced by a set of lists (for the HSC and for each new SIG/TG), with appropriate new naming of each list.

On Mon, Feb 7, 2022 at 10:26 AM Chris Owen <Chris.Owen@...> wrote:
Hi all,

I lead the CPU software / SDK team at Imagination Technologies, we are entering the RISC-V space but I'm still quite new around here.

At present we are most interested in embedded applications and I am particularly interested in standardising platform aspects in this area.  For example, a Hardware Adaption Layer for bare-metal apps.  I realise, though, that the M platform is rather on hold and all the focus is on OS-A.

Is this the only mailing list for the Platforms HSC?  Or is there another one which could be used for discussions around the M platform?  I realise the title for this list says its for unix-class, but I didn't see any other...

I was just wondering if we could start progressing M platform in parallel with OS-A.  My team and I are ready and willing to engage in this area.  I believe people like SiFive and AliBaba have done lots of work in this area and it would be great to bring them together and standardise rather than allowing things to fragment further.

Thanks for any help and advice,
Chris Owen

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