DENX . DULG . LinuxCrashesRandomly

14.3.1. Linux crashes randomly

Question:
On my board, Linux crashes randomly or has random exceptions (especially floating point exceptions if it is a PowerPC processor). Why?

Answer:
Quite likely your SDRAM initialization is bad. See UBootCrashAfterRelocation for more information.

On a PowerPC, the instructions beginning with 0xFF are floating point instructions. When your memory subsystem fails, the PowerPC is reading bad values (0xFF) and thus executing illegal floating point instructions.

----- Revision r1.1 - 27 Aug 2004 - 14:41 - WolfgangDenk
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