[U-Boot] relocation on freescale mx35 doesn't work after update to 2015.01

[Priebe, Sebastian]

Hello Albert,

thanks for your answer.
I tried to look up some information in the iMX35 reference manual but couldn't find anything. It doesn't say anything about the exception vectors. Can you point me at any direction where to look for information?

What is the consequence of skipping the relocation?
Until now we don't use interrupts in the U-Boot.
I want to know if we could update to the new version using the workaround I used, or if we might facing problems with that.

Greetings,
Sebastian Priebe
Telefon: +49 (0)621 685996-26




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-----Ursprüngliche Nachricht-----
Von: Albert ARIBAUD [mailto:albert.u.boot at aribaud.net]
Gesendet: Freitag, 6. Februar 2015 01:16
An: Priebe, Sebastian
Cc: U-Boot
Betreff: Re: relocation on freescale mx35 doesn't work after update to 2015.01

Hello Sebastian,

On Thu, 5 Feb 2015 15:24:40 +0000, Priebe, Sebastian <Sebastian.Priebe at cadcon.de> wrote:
> Hello,
>
> I'm using a custom board with iMX35 CPU (ARM1136).
> After I updated to version 2015.01 the relocation doesn't work anymore.
> I turned on CONFIG_DEBUG and the last output I saw was:
>     Relocating to 83f89000, new gd at 83e84ec8, sp at 83e84ea0
>
> I recognized the new function "relocate_vectors".
> I copied the special handling (strong function) from mx25, which is just skipping the relocation of the vectors and with that the U-Boot is booting again on my board.
>
> Do I need some special handling for mx35, too? Does anyone have the same problem?
>
> Any advice?

Yes, you quite possibly need some special handling. Look up the i.MX35 documentation and see how the exception vectors are handled. Probably there is something similar to what had to be done with i.MX27 (and that probably should (have) be(en) done wth i.MX25 too instead of just skipping the whole thing).

> Thanks,
> Sebastian

Amicalement,
--
Albert.