On Wednesday 28 January 2009, Pawel Pastuszak wrote:
I was wondering if some one could give me an hand with OCM for PPC405EP
So my goal is to Access *CFG_BOOTCOUNT_ADDR *value in Linux based on http://www.denx.de/wiki/view/DULG/UBootBootCountLimit
Please note that its CONFIG_SYS_BOOTCOUNT_ADDR now.
In u-boot it works fine but ... but how to i talk to this memory range in linux.
I tried the following but no luck. ulong * save_addr = ioremap( (CFG_OCM_DATA_ADDR + CFG_BOOTCOUNT_ADDR),8 );
if (save_addr[1] != BOOTCOUNT_MAGIC) return 0; else return save_addr[0];
And what's the result of the above code? Do you get an exception? Or some unreasonable values?
Which kernel version are you using?
Best regards, Stefan
===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office@denx.de =====================================================================