[uClinux-dev] RE: page_offset.h incorrect for M5208EVB

[Greg Ungerer]

Hi Bob,

Bob Furber wrote:
>> While I'm not familiar with the 5208, isn't dBUG in Flash, not SDRAM?
>> Once it stops running (by passing control to Linux) then any RAM it was
>> using should be fair game, provided that all its hooks (interrupt
>> vectors etc) are removed (which they should be).
> 
> My first reaction was "Duh! Why didn't I ever question this.
> 
> I believe that amongst other things, the dBUG stack is near the bottom of
> SDRAM. So, it becomes a bit of a philosophical question: What do we want to
> happen when uClinux is shut down? Return to the dBUG> prompt?

In the early days of uClinux on ColdFire that is exactly what
you could do. But that functionality is long gone now.

The 0x20000 gap leaving the dBUG ram intact is a left over
from that though.

Regards
Greg



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