hang up after start_here

Hello all,

I'm designing a custom board build around a 405GPr processor. I'm in my
third prototype phase, and I've problem with one board which hang during
Linux booting.
I've debugged and found that the board hangs in start_here function and
doesn't reach the early_init function.

Because the problem appears on only one of my boards out of 16, I suspect
a hardware problem, and because it occurs just after mmu initialisation
and caches enabling, I suspect more especially sdram accesses.

I want to know if anybody has encountered a similar problem and if the
diagnostic was the same.

Kernel version is 2.4.18 from Montavista.

Thanks for help,

Laurent

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