Re: [PATCH 0/3] Add RITY devicetree preparation support

On Fri, Aug 28, 2026 at 10:39:55AM +0200, Carlo Caione wrote:
> RITY images select a base devicetree and an ordered list of overlays
> through the storage, storage_dev, dtb_path, boot_dtb, fdtfile and list_dtbo
> environment variables. EFI boot needs the selected tree to be assembled
> and published through fdt_addr before the operating system is started.
> 
> Add MediaTek support to consume that interface. It locates the selected
> source on GPT block partitions or on the RITY UBI/UBIFS NOR layout, loads
> the base DTB, applies list_dtbo in order and publishes the completed tree.
> Both raw and authenticated DTB and DTBO inputs are supported.
> 
> Expose mtk_fdt_prepare for interactive use. Retain the dtbprobe and
> fdtprobe command names and positional arguments used by RITY EFI boot
> environments. Also provide bootembedded for legacy boot. It locates and
> runs the appended RITY boot script through the standard source command,
> leaving the legacy policy and authentication to source and bootm.
> 
> The implementation uses existing block, MTD, UBI/UBIFS, libfdt overlay,
> image verification, source and bootm services.
> 
> Signed-off-by: Carlo Caione <[email protected]>
> ---
> Carlo Caione (3):
>       arm: mediatek: add RITY devicetree preparation
>       arm: mediatek: add RITY devicetree compatibility commands
>       arm: mediatek: add bootembedded compatibility command
> 
>  arch/arm/mach-mediatek/Kconfig            |  45 +++
>  arch/arm/mach-mediatek/Makefile           |   3 +
>  arch/arm/mach-mediatek/cmd_bootembedded.c |  59 ++++
>  arch/arm/mach-mediatek/cmd_fdt_prepare.c  |  66 ++++
>  arch/arm/mach-mediatek/fdt_prepare.c      | 502 ++++++++++++++++++++++++++++++
>  arch/arm/mach-mediatek/fdt_prepare.h      |  10 +

Is this some mediatek specific format? But even if so, cmds should go
under something like cmd/mediatek (and get docs..).

-- 
Tom

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