XIP & GCC optimization & halting

Nicolas Pitre nico at cam.org
Wed Oct 19 11:00:41 EDT 2005

On Wed, 19 Oct 2005, Korolev, Alexey wrote:

> Disassembling of cfi_cmdset001.o showed that operation ("/") is mapped
> to __divsi3 and __udivsi3 call from arch/arm/lib. 


> Now I'm not clear about solution for the problem.

Select only one CFI buswidth and only one chip interleave when 
configuring your kernel.  That will allow gcc to precompute everything a 
t compile time and avoid the runtime divide.

I'll think of a way to enforce that in Kconfig.


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