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 Power Architecture processor). Why?

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

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

----- Revision r1.2 - 07 Aug 2009 - 19:55 - WolfgangDenk
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