Re: smp8634 add memory at dram1

[David Daney <ddaney@avtrex.com>]

James Zipperer wrote:

> 
>  
> 
> I'm running out of memory in linux on the smp86xx and attempting to 
> implement this solution.  Did you ever get it to work?  No luck for me 
> yet.  I'm still a bit unclear why you must switch linux to run off DRAM 
> 1 instead of leaving it on DRAM 0 and adding an additional call to 
> add_memory_region in prom_init for DRAM 1.  But then again, I haven't 
> gotten that to work yet either :)
> 
>  
> 
> Any info/patches are greatly appreciated.  Thanks!
> 
>  
> 

Typically DRAM 1 must be accessed through the TLB as its address lays 
outside of the 512MB window of KSEG[012].

The best way to make this memory available to Linux may still be up for 
debate.

David Daney