[RFC PATCH] zynqmp: Add binman description for SOM

[Simon Glass]

Hi Michal,

On Wed, 9 Oct 2024 at 10:33, Michal Simek <michal.simek at amd.com> wrote:
>
> There is necessary to do some steps to compose boot images. These steps
> were in scripts in layers for a while. That's why introduce description via
> binman to simplify wiring and remove all scripting around.
> This should make sure that everybody is up2date with the latest versions.
>
> The first step is to create fit image with DTBs with descriptions in
> configuration node which is written as regular expression to match all SOM
> versions.
> Description is there for k24 and k26 in spite of low level psu_init
> configuration is different. The reason is that it goes to u-boot.itb image
> which is the same for k24 and k26.
> u-boot.itb is another image which is generated. It is normally generated
> via arch/arm/mach-zynqmp/mkimage_fit_atf.sh but this script is supposed to
> be deprecated.
> FIT image by purpose is using 64bit addresses to have default option to
> move images to high DDR (above 4GB). TF-A and TEE are optional components
> but in the most cases TF-A is present all the time and TEE(OP-TEE) is used
> by some configurations too.
>
> 3rd generated image is boot.bin with updated user field which contains
> version number. This image can be used with updated Image Selector
> which supports A/B update mechanisms with rollback protection.
>
> 4th image is image.bin which binary file which contains boot.bin and
> u-boot.itb together and can be programmed via origin Image Selector.
> This image can be also used for creating one capsule which contains both
> boot images (in SPL boot flow).
>
> Signed-off-by: Michal Simek <michal.simek at amd.com>
> ---
>
> Currently I have this for testing purpose only to find missing bits and
> pieces in binman for cases I want to support.
>
> This patch depends on
> https://lore.kernel.org/r/fbed0251437b61a2f7a85596d7403b5b9c8237c1.1728306322.git.michal.simek@amd.com
>
> ---
>  arch/arm/dts/Makefile                |   1 +
>  arch/arm/dts/zynqmp-som-binman.dts   | 224 +++++++++++++++++++++++++++
>  arch/arm/mach-zynqmp/Kconfig         |  17 ++
>  configs/xilinx_zynqmp_kria_defconfig |   2 +
>  4 files changed, 244 insertions(+)
>  create mode 100644 arch/arm/dts/zynqmp-som-binman.dts

I'm pleased to see this. My only suggestion is to use '/bits/ 64'
instead of the macros, for 64-bit values.

[..]

Regards,
Simon