[yocto] Yocto concept and support for dual version firmware upgrad and boot

[Henrik Nymann Jensen (HNJE)]

On 2019-05-03 03:55, JH wrote:
> Hi,
>
> Are there any Yocto recipes to support dual version control for
> firmware image upgrade and boot?

This is not something Yocto comes with out of the box, but both rauc and 
swupdate
provides a meta layer you could use.

https://github.com/rauc/meta-rauc
https://github.com/sbabic/meta-swupdate

> The scenario is to make 2 partitions, one partition to install a work
> version of image, say v1.0, another partition to install a development
> version of image, say v1.1, the boot process should pick up the
> highest the version v1.1 first, if it fails to boot, it retreats back
> to boot old version v1.0.
>
> Appreciate any tips or reference for that implementation in Yocto.
>
> Thank you.
>
> Kind regards,
>
> - jupiter