[EXTERNAL] Re: [PATCH V2 0/9] board: k3: Sync rm-cfg with TIFS v11.02.09 firmware

[Ernest Van Hoecke]

On Wed, May 06, 2026 at 12:58:10PM +0530, Sparsh Kumar wrote:
> Hi Ernest,
> 
> Apologies for the delayed response.
> 
> The M4 core that runs TIFS has far less memory available (176KB) than the
> WKUP/DM R5 core. To keep the memory footprint as small as possible we trim
> the full RM board configuration down to only the entries that TIFS needs and
> store the result in `tifs‑rm‑cfg.yaml`.
> 
> A couple of important points:
> 
> 1. Both `rm‑cfg.yaml` and `tifs‑rm‑cfg.yaml` are generated automatically.
>    We use the K3 Resource Configuration Tool (formerly the K3 Resource
> Partitioning Tool) to generate the files from the SysConfig file and then
> copy the generated YAML files into U‑Boot. No manual editing is involved.
> 
> 2. By using a smaller board‑config file we free up RAM on the M4, preserving
> space for future features or extensions.
> 
> 3. Secure‑boot relevance - The `tifs‑rm‑cfg.yaml` does not play any direct
> role in the secure‑boot process; it is simply a streamlined copy of
> `rm‑cfg.yaml` that contains only the TIFS‑specific resources.
> 
> Please let me know if any part of this explanation is unclear or if you need
> more detail on a specific step. Happy to elaborate!
> 
> -- 
> Best Regards,
> Sparsh

Hi Sparsh,

Thanks a lot for the extra explanation here, this clears up our
questions!

Kind regards,
Ernest