[U-Boot] [PATCH] toplevel Makefile: Add MPC8641HPCN_36BIT target

[Scott Wood]

Becky Bruce wrote:
> We don't want PHYS_64BIT on unconditionally.  It has the effect of 
> moving all the devices into high physical memory, which means you need a 
> different Linux/dts.

Another reason we should really be packaging the device trees with u-boot.

>  I expect the normal case to be that it is off.  
> Just those few customers that actually want to do this will use the 
> PHYS_64BIT version.

OK, though ideally it could be chosen dynamically based on how much 
memory there is (in u-boot) or #address-cells (in linux).

-Scott