[U-Boot] About mtest on boot

[Érico Porto]

Now I understood, LTIB is giving me an older u-boot version - 1.1.6 and not
2011.12. Will try to update it...

Érico V. Porto


On Fri, Jan 20, 2012 at 8:38 AM, Anatolij Gustschin <agust at denx.de> wrote:

> Hi,
>
> On Fri, 20 Jan 2012 08:07:41 -0200
> Érico Porto <ericoporto2008 at gmail.com> wrote:
>
> > Hello,
> >
> > I want to stop autoboot and use mtest to check if my ram is alright, but
> > 0x07FD2C00 forward freezes, and 0x00000902 also freezes, mtest, when
> using
> > it. My ramsize is 0x08000000.
> >
> > Does u-boot uses any parts of ram by itself, I mean, is there any known
> > spots where I can't test because it would crash my system?
>
> U-Boot relocates itself into RAM. You can check the address using
> 'bdinfo' command (look at 'relocaddr' in the output). There are
> also some data structures in RAM (global data, board info, stack,
> malloc area) and also exception vectors. Where it is located in
> RAM depends on your architecture and board configuration options.
> You can try to define DEBUG in the arch board.c file to get more
> info. Board config file should define CONFIG_SYS_MEMTEST_START and
> CONFIG_SYS_MEMTEST_END to prevent crashing when mtest is invoked.
>
> HTH,
> Anatolij
>