[U-Boot] How to support ATF on u-boot

[Simon Glass]

+Tom

Hi,

On 19 June 2016 at 20:59, Kever Yang <kever.yang at rock-chips.com> wrote:
> Hi U-boot Maintainers,
>
>     I want to upstream a new SoC named RK3399 from Rockchip which is
> AARCH64/ARMv8, we need to support Arm Trust Firmware base on U-boot.
>
>     Right now we are using a miniloader(just like SPL in U-boot) to load
> ATF/U-boot,
> and PC jump from miniloader to ATF and then to U-boot(with CPU change to EL2
> mode or nsEL1),
> then U-boot load kernel/rootfs as usual.
>
>     The ATF support for RK3399 has already upstream
>     Could you give your opinion on how to support ATF on U-boot upstream?

To follow up on this, I think we need a better solution for building
firmware images. I'm going to look at writing a tool to handle this. I
hope to have some patches out by the end of July.

> When I asked Simon Glass offline, he suggest if we can build ATF as part of
> the
> U-boot build process, perhaps with a script in U-boot tree,
>
> Perhaps something like:
>
> make rk3399_board_defconfig
> make
> ./scripts/build-atf-image rk3399_board
> ^^ new script
>
> In any case, a good README would help.
>
>
> Thanks,
> - Kever
>
>

Regards,
Simon