On 1/31/23 04:26, Gerion Entrup wrote:

Hi Pierre,

Am Montag, 30. Januar 2023, 15:55:47 CET schrieb Pierre-Louis Bossart:

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Hi Gerion,

Zephyr support is still very new, if you want to start using it now it has to be clear that you'll have to follow the bleeding edge firmware development on TigerLake+ devices. All previous platforms will not have Zephyr support and have been parked on a long-term XTOS-based support branch.

That is good to know.

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The only Intel-based devices you can use for you own development are the Up Extreme i11 boards or TigerLake+ Chromebooks in developer mode. These two sets of devices use the community key and have the DSP configured.

The Extreme i11 boards look promising. Regarding the Chrombooks: I'm not familiar with these devices. Is it possible to use them as a "server"? So reboot and connect to them over SSH while the developer mode stays active?

yes, the 'developer mode' is something that you can set once and it can remain on over reboot cycles. It's not that straightforward but it's not the end of the world either.

see here two examples of Chromebooks used for SOF CI with a Ubuntu setup and kernel/firmware updated for tests run over SSH.

https://sof-ci.01.org/linuxpr/PR4163/build2911/devicetest/index.html?model=C...

https://sof-ci.01.org/linuxpr/PR4163/build2911/devicetest/index.html?model=G...

Note that our default test setup relies on a minimal kernel configuration based on 'make defconfig' + scripts to add what we need, see https://github.com/thesofproject/kconfig/blob/master/kconfig-sof-default.sh

This may need to be improved with your own configurations depending on what you want to test.

Hope this helps.

-Pierre