Forwarding reply from Sven since he wasn't subscribed when it was sent. On Fri, Jul 27, 2007 at 12:33:10PM +0200, Sven Luther wrote: > > The efika has 128MB of builtin memory, and we know that everything above > 24MB except a little heap at the top is free, so this should be enough > for everyone, no ? > > The 0 to 16MB area is also free normally, and the pre-powerpc kernel > loaded themselves at 4 or 8 MB, and relocate the kernel at 0. > > Using the 16MB to 24MB area is a big no-no though, since it would kill > the firmware. > > The efika/pegasos firmware is not able to relocate itself dynamically, > and as it reserves the first 256MB (1 BAT area), but it could be used > with a 128 MB (like the efika) or smaller memory DIMM, so it cannot > reside on the top area of ram where it belongs. > > There is a small stack going down from min(top-of-memory,256MB) of a > couple MB though. > > The efika/pegasos firmware furthermore runs in physical memory, and > cannot switch to virtual memory. > > Hope this helps, altough obviously i can make no prediction about future > efika firmwares. > > Friendly, > > Sven Luther >
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