On Dec 14, 2005, at 10:14 PM, Ken Hornstein wrote:

> I just realized something ... is the kernel _running_ from the flash
> memory? (it looks like to me that it is)  If it is, then I won't be
> able to overwrite a running kernel (well, I'd be able to overwrite  
> part
> of it, but probably I wouldn't be able to get the whole thing :-) ).
> So I guess maybe my only options are to either get a real first-stage
> boot sequence running, or suck it up and just shuffle kernels around.

No (I wrote gzboot, I should know :-)

gzboot has a compressed copy of the kernel in its belly, and then  
decompresses it to RAM.  gzboot itself may or may not run directly  
out of flash.

-- thorpej