Hi,

On Tue, 8 Aug 2023 at 14:41, Mr Academia Euforia euforiamracademia@gmail.com wrote:

Hi there,

I'm working on certain feature to be added to ONIE that is running on Broadcom's Helix4 -based network switch. Part of the task is to add FIT signature signing to U-boot versions supported by ONIE. ONIE as part of the build process uses uboot snapshots, and applies platform patches on top of it.

The list of U-boot snapshots to pick from is as follows: 2012.10, 2013.01.01, 2015.10, 2018.03

My platform by default, uses the oldest, 2012.10 and this version does not support FIT signatures.

I was thinking how to address that, and came up with two solutions, neither being better (in my mind):

1. Create patch set based on the difference between more recent U-boot

versions and 2012 that would be focused around fit image signatures,

2. Pick 2018.03 as code base.

Problems I see:

Ad 1) I can't find any repository that would contain commits from that far away history-wise. Did U-boot project even use any public repository in 2012 ? General problem here is how to prepare patchset,

Ad 2) The problem is that platform code patches don't apply on more recent U-boot versions. Some of the files no longer exist, some code has been refactored, etc.

Could you guys offer me any sort of advise on how to approach this ?

Git history goes back to 2003.

One way would be to start from scratch with v2023.07 and do a new port for your board. After that many years, a lot has changed.

After that, you could consider upstreaming it so your code can keep up with updates.

Best regards

Regards, Simon