Thread (22 messages) 22 messages, 8 authors, 2007-09-24

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

From: Valentine Barshak <hidden>
Date: 2007-09-20 18:16:55

Josh Boyer wrote:
On Thu, 20 Sep 2007 21:55:58 +0400
Valentine Barshak [off-list ref] wrote:
quoted
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.
OK
I still need to look at the code too :)
sure :)
josh
Thanks,
Valentine.
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help