Re: [PATCH] PowerPC: add setup_cpu for 44x for processor-specific init

On Thu, 20 Sep 2007 21:55:58 +0400
Valentine Barshak [off-list ref] wrote:

This adds cpu_setup functionality to PowerPC 44x platform.
The cpu_setup callback is invoked by head_32 code and 
the identify_cpu() function at early init and is used to 
initialize FPU on 440EP(x) processors. The FPU initialization 
was previously done in head_44x.S. Also a workaround for 
the incorrect write to DDR SDRAM 440EPx/440GRx errata added.
Data can be written to wrong address in SDRAM when write 
pipelining is enabled on plb0. The setup_cpu function
for these processors disables write pipelining.

Wow, you're fast ;)

I'd like to see this split up a bit so there's not so much in one
patch.  Essentially, introduce cpu_setup_44x.S, move the FPU init to
use it, and then add the PLB workaround.

I still need to look at the code too :)

josh