“Philippe Elskens” <email@example.com> wrote in
You’re right: I’m looking to find out where are holes in the physical
address space without any considerations about the board
I assume you have a well defined behaviour for poking at addresses that
have nothing on the other side.
You could do a write/lagging read of certain boundaries. You write a well
know value (1), write another section w/ well known value (2), read section
(1), verify the well known value is there → assume there is backing store
at that address.
Of course writing willy-nilly to addresses where you don’t know what the
backing store is (ie. flash, some device etc) is really dangerous. Getting
a generic solution at such a low level, for custom/different hardware is
really hard to do.
With a PC, I always felt limited by the software available.
On Unix, I am limited only by my knowledge.
–Peter J. Schoenster <firstname.lastname@example.org>