[yocto] uBoot, kernel and device tree files

[Srinivasan, Raja]

Mathieu

Appreciate the suggestion. Will give it a shot. Thanks, srini

-----Original Message-----
From: Mathieu Alexandre-Tétreault [mailto:alexandretm at amotus.ca]
Sent: Thursday, August 9, 2018 8:45 AM
To: Srinivasan, Raja <rsrinivasan at abiomed.com>; yocto at yoctoproject.org
Subject: RE: uBoot, kernel and device tree files

Hello Srini,

I think what you are looking for is the fitimage, it will allow you to bundle the kernel and devicetree together in a single file and it also allows you add a signature.

This process is well integrated in yocto, from what I remember activating the fitimage is relatively easy:
   - in your machine.conf
       - declare KERNEL_CLASSES += "kernel-fitimage" and KERNEL_IMAGETYPE = "fitimage"
   - in your u-boot defconfig (configs/yourboard_defconfig
       - enable CONFIG_FIT=y
   - in your config include/configs/your_board.h change the script to boot your fitimage

I hope this helps,

Regards,

Mathieu

> -----Message d'origine-----
> De : yocto-bounces at yoctoproject.org <yocto-bounces at yoctoproject.org>
> De la part de Srinivasan, Raja Envoyé : August 8, 2018 2:51 PM À :
> yocto at yoctoproject.org Objet : [yocto] uBoot, kernel and device tree
> files
>
> All
>
>
>
> We are using rocko.on variscite var-som-mx6.
>
> In order to increase the security of our system (during a system
> upgrade), we are looking to merge uImage (kernel image) and the device
> tree file into 1 file. Currently these are 2 different files and are
> worried that a file copy operation might get aborted.
>
> My research so far indicates mkuboot can be used to merge these. but
> having trouble making this work.
>
> Need some ideas.
>
>
>
> Any pointers appreciated. srini
>
>
>
>
>
>
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