Hi Igor, On Mon, 27 Feb 2023 at 07:26, Igor Opaniuk <igor.opaniuk@xxxxxxxxxxxx> wrote: > > Hi everyone, > > I apologize in advance for the possibly wrong ML for this question. > > I'm currently looking for any existing ways of adjusting pre-compiled device > tree blobs. I know that dtc doesn't have such ability (and obviously its purpose > is different), but maybe there is something you can recommend in this case > (kind of userland analogy of U-Boot's runtime "fdt apply" cmd). > > For instance, I would like to add one property to "/firmware" (its value > is generated during compile time) node into multiple device tree > blobs built with-in > Linux/U-Boot/TF-A, avoiding any additional intrusive changes to these source > trees (so, for example, adding dtsi with needed firmware property > unfortunately doesn't work for me). > > The only solution I see is a custom app that uses libfdt, implemented > specifically > for this task, but maybe there is something which already exists. There is fdtput which can add simple properties and nodes. I suppose you are aware of binman[1], which might be useful if your signing/production scheme were supported there. > > Thanks and looking forward to your replies. > > -- > Best regards - Freundliche Grüsse - Meilleures salutations > > Igor Opaniuk > Embedded Software Engineer > T: +380 938364067 > E: igor.opaniuk@xxxxxxxxxxxx > W: www.foundries.io Regards, Simon [1] https://u-boot.readthedocs.io/en/latest/develop/package/binman.html (pip install binary-manager)
