> Hi,
> 
> I've been trying to build an arm32 kernel with the -mcpu=strongarm 
> -mtune=strongarm.
> 
> The problem I've had is that the podulebus doesn't get devices attaching 
> properly. Anyway, after doing some rummaging around in the .s files from a 
> kernel with and without the above options it seems that it's doing the 
> following optimsation:
> turning:
> ldr r3, [r5, #6]
> mov r0, r3, lsr #16
> into
> ldrh r0, [r5, #4]
> 
You have fallen into a slight trap of the RiscPC architecture. Although 
the RiscPC has a StrongARM processor the memory interface does not 
implement 16bit (halfword) transfers. Try the following options:

-march=armv3m -mtune=strongarm

This should keep the halfword instructions from being generated and 
give you a working kernel.

Mike