[U-Boot] using boot.scr or uEnv.txt with FIT images

[Ramakrishnan Meenakshi Sundaram]

Hi Jagannadh,

I'm Ram from Symantec. I've been working on using u-boot secure booting
with RSA.

As part of that - I was observing that once we define CONFIG_FIT_SIGNATURE
- it disables the CONFIG_IMAGE_FORMAT_LEGACY.

As a result - when the system detects a boot.scr in my sd card - it rejects
that with

Wrong image format for "source" command
SCRIPT FAILED: continuing...

After this, when it comes to the u-boot prompt - I'm able to successfully
boot my kernel. So i wanted to explore ways to automatically boot a FIT
image. Is there any recommended way of automatically booting fit images ?

Some additional notes (based on code walkthrough) :

I'm seeing this is due to the code sequence in cmd_source.c & image.c. On
further analysis - I did find that when mkimage is converting the boot.cmd
to boot.scr,  it uses the default legacy header. As a result when
CONFIG_IMAGE_FORMAT_LEGACY is disabled - the boot.scr fails to execute.


thanks
Ram