[Buildroot] [RFC] FIT image support

Heiko Abraham abrahamh at web.de
Fri Jun 20 08:15:23 UTC 2014


Hi Yegor,

On Thu, 19 Jun 2014 17:38:16 +0200, Yegor Yefremov wrote:
> What would be the best approach to support FIT images, i.e. kernel
> image + DTB + initramfs in one file?

FIT-Images can be complex. See uboot documentation. You need your your own *.its file 
(match requirements like sign, hash, configs). Note that your uboot config must enable 
the required features, like CONFIG_FIT_SIGNATURE, CONFIG_RSA, ...

My approach is:
- add own patch for uboot to enable FIT-image support for target
- create your own *.its file  (with sections for kernel, dtb and ramdisk)
- use the buildroot post-script to create the FIT-image (using uboot-mkimage) 

Heiko


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