[U-Boot] Kernel copy from NOR to RAM

[Nicolas Luna]

In fact I'm using OMAPL138 platform and I think that it is not UBL that is
copying kernel under that platform.

I have been able to find the kernel image relocation in cmd_bootm.c but that
is not the inital copy.

I added printf/puts into the code to find where exactly it happens and my
last print before the copy is displayed from

file: hush.c
function: static int run_pipe_real(struct pipe *pi)
line: rcode = (cmdtp->cmd) (cmdtp, flag,child->argc-i,&child->argv[i]);

This is a function pointer and I just don't know where it jumps and it's
what I trying to find.

Any idea?

Thanks

Nicolas


On Mon, Aug 23, 2010 at 11:28 AM, Detlev Zundel <dzu at denx.de> wrote:

> Hi Nicolas,
>
> > I'm using OMAP-L138 (ARM based) with NOR flash and I'll like to know in
> > which file uboot copies kernel from NOR to RAM?
>
> This will be the UBL which runs before U-Boot gets a chance to run.
> Just before Stefano Babic's work on the dm365 platform all davinci
> U-Boot ports configured CONFIG_SKIP_LOWLEVEL_INIT and thus relied on
> being loaded by some other entity into RAM to the link address specified
> during compilation.  In such setups U-Boot is actually a payload in an
> AIS image.
>
> There is some documentation out there on the web ([1], esp. [2]) - if
> you have further questions, go ahead ;)
>
> Cheers
>  Detlev
>
> [1] http://processors.wiki.ti.com/index.php/Category:OMAPL1
> [2]
> http://processors.wiki.ti.com/index.php/Serial_Boot_and_Flash_Loading_Utility_for_OMAP-L138
>
> --
> Deutsches Grundgesetz Artikel 21 Absatz 1:
> Die Parteien wirken bei der politischen Willensbildung des Volkes mit. Ihre
> Gründung ist frei. Ihre innere Ordnung muß  demokratischen Grundsätzen ent-
> sprechen. Sie müssen über die Herkunft und Verwendung ihrer Mittel sowie
> über
> ihr Vermögen öffentlich Rechenschaft geben.
> --
> DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
> HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
> Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de
>