[U-Boot] Moving MX25 to SPL

[Stefano Babic]

Hi Michael,

On 16/10/2018 12:32, Michael Nazzareno Trimarchi wrote:
> Hi all
> 
> I'm trying to figure out how move the mx25 to two stage boot using
> SPL. Anyone know why was done it before?
> 

It is simply because the i.MX25 is pretty old and there is quite no more
interest on it. New projects are not started with this SOC - at least, I
do not know myself.

This corresponds to the very low number of i.MX25 boards in mainline
(just two).

Boards has still a sort of lowlevel_init.S board code, this was a
"standard" before, and was removed for new SOCs and/or new boards.
Anyway, it is just a signal that just a few of developers / companies
has interest in extending the support for this SOC.

> More technical question is if I can convert imximage.cfg value and let
> it write to an spl.c file that make the same. I don't have a lot of
> background on imx25 bootrom and what it's supporting. Can you some
> hint?
> 

The i.MX25 has 128KiB internal RAM, and ths makes it suitable for a
current SPL, much better as a MX6 Solo.

Best regards,
Stefano

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