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

Michael michaelzwrk at gmail.com
Wed Jan 17 13:18:15 CET 2007

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.

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

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