Hi Stefano

On Tue, Oct 16, 2018 at 12:59 PM Stefano Babic sbabic@denx.de wrote:

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.

Yes I have seen but seems that I need to have this interest ;)

...

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.

It's accetable to make somenthing like this? struct imxconfig_value { uint32_t offset; uint32_t value; };

static imxconfig_value init_vals[] = { { 0xB8002050, 0x0000D843 }, { 0xB8002054, 0x25252521 }, { 0xB8002058, 0x22250A00 },

and having a stub just make this init on the spl.c file.

Michael

Best regards, Stefano

--

DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic@denx.de =====================================================================