[U-Boot-Users] Stack pointer corruption on 8541 - short version.

[Michael]

Well, it was WindRiver Probe.
To be fair - we have a pending issue on this with WindRiver, and they
are working on it. Hope it'll be settled.

On 1/17/07, Jerry Van Baren <gerald.vanbaren at smiths-aerospace.com> wrote:
> > On 1/15/07, Michael <michaelzwrk at gmail.com> wrote:
> >> Hi all.
> >> I posted a mail describing a problem I have with stack pointer on a
> >> board with MPC8541.
> >> I figured out I gave a complicated description for a simple problem,
> >> so here it is rephrased:
> >> I get the stack pointer corrupted when returning from function call on
> >> the first functions (running in flash, L1 cache used for stack).
> >> for example, in start.S:
> >> bl foo1(), when foo1() is:
> >> void foo1()
> >> {
> >>  foo2();
> >> }
> >> void foo2()
> >> {
> >>  foo3();
> >> }
> >> The return address from foo2() is some random crap.
> >>
> >> Any ideas what could be the reason?
> >> Thanks,
> >>   Michael
> >
> > Michael wrote:
> > Seems like I found the cause of the problem - it was the JTAG I use.
> > It somehow corrupts the stack pointer in L1D cache. Running without
> > the JTAG, or alternatively relocating the stack pointer to SRAM,
> > results in normal execution.
>
> And the JTAG unit manufacture/model is?????  Forewarned is forearmed.
>
> Thanks,
> gvb
>