[U-Boot] 405EP U-boot/Linux Question (CFG_OCM_DATA_ADDR)

[Stefan Roese]

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

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