[U-Boot-Users] Unable to run hello_world

[Jim McNamara]

> In message <PKEEJGHDPBIDKDLLBHPIAEKBCBAA.jmcnamara at kimble.ie> you wrote:
> >
> > I can load the resultant binary using the loadb command but an
> exception is
> > generated when I attempt to run the program:
> ...
> > I had a look at what's going on with the debugger - hello_world
> is jumping
> > to an incorrect address (0xff97b8). This happens at the very
> start of the
> > program.
>
> This probably means that the stub code which exports U-Boot functions
> for use in stanbdalone applications is  incorrect  and/or  incomplete
> for your platform.

I've stepped through the code with the debugger and the stub code seems to
be working fine. I set the PC to getc() in hello_world and I was able to
jump to serial_getc() in u-boot. D7 is pointing to the start of global data,
as expected.

However, I did notice that both the u-boot monitor and the hello_world app
are using the same vaue for A5 when jumping to other functions - hello_world
is pointing to u-boot's data/bss section. Does anyone know how I can get the
hello_world app to load it's own A5 value before it begins its own
processing??
>
> > I've read through the README and DULG I've scoured the mailing
> list archive.
> > I still haven't been able to come up with a solution. Any ideas
> as to what I
> > could be doing wrong??
>
> Please see doc/README.standalone and  check  the  implementation  for
> your arch.
>
> Best regards,
>
> Wolfgang Denk
>
> --
> Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
> Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
> To be a winner, all you need to give is all you have.
>
>
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