On Sat, 16 May 2020 at 15:46, Heinrich Schuchardt <[email protected]> wrote:
>
> On 5/15/20 7:10 AM, François Ozog wrote:
> <snip>
> >     Would the topic of dynamic parts of device trees deserve two slides on
> >     our next meeting?
> >
> > This is a key topic that probably deserves more than two slides. Please
> > prepare a presentation as you deem fit .
> >
>
> You can find my ideas about why device trees are not static here:
>
> https://github.com/xypron/dte/blob/master/Device%20Trees%20Are%20Not%20Static.pdf
>
Great presentation! looking forward you talk to it.

If we were to define a UML sequence diagram with regards to firmware,
what would be the actors and the classes?

From all past discussions, I am trying to find a name for the function
that U-Boot does. I would like to avoid "boot loader" because it may
mean too many things.
Thinking about areas of responsibility, I distinguish "firmware" and
"operating system" (loosely defined).
U-Boot becomes the pivot function between "firmware" and "OS".

I thus see two domains for DT manipulations (fixups, overlay merge or
list-add):
- what happens between firmware components (SMM, Trusted OS, Secure
partitions...)
-- what happens in the hand off between firmware and OS (and conversely)

Do you think you could add some slides to present your ideas around
the above topics?

>
> Best regards
>
> Heinrich



-- 
François-Frédéric Ozog | Director Linaro Edge & Fog Computing Group
T: +33.67221.6485
[email protected] | Skype: ffozog
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