MPC8555CDS & CCSRBAR

[Gerhard Jaeger]

On Tuesday 09 August 2005 16:04, Eric Kampman wrote:
> Trying to port an SEC driver to Linux/PPC8555. Reading
> the default CCSRBAR @ 0xFF700000 I read 0xFFFFFFFF
> which is wrong. Looking at Metrowerks init files and
> uboot code (1.1.2) I see it's likely been moved to
> 0xE0000000, but I get a seg fault when I try to read
> there. 
> 
> So, what am I doing wrong, and even better, how do I
> at runtime find out where CCSRBAR is? Thanks in
> advance, and please forgive the likely ignorance, 
> 
> Eric
> 

use the get_ccsrbar() function to get the address, then ioremap()
will be your friend ;)

HTH
Gerhard


-- 
Gerhard Jaeger <gjaeger at sysgo.com>            
SYSGO AG                      Embedded and Real-Time Software
www.sysgo.com | www.elinos.com | www.pikeos.com | www.osek.de