[Buildroot] a special ramdisk
Charles Krinke
charles.krinke at gmail.com
Thu Jul 21 13:56:43 UTC 2011
Gentlemen:
I'm looking for a little advice on a non-buildroot issue. An answer of
RTFM would be fine but a URL for the FM would help.
I need to use 2MByte of battery backed SRAM in my PPC8321 design
running Linux built with buildroot. The requirement is that this SRAM
have a file system on it so that programs can
open()/read(),write(),close(). The RAM is at a specific address and I
can map it into memory just above the main DDRRAM.
So, the question is: "Is there a way to create a ramdisk at a
specific address, perhaps using /dev/mem, mmap and other utilities?"
If I had a couple of google search terms that lead to some clues where
someone else has solved a similar problem, that would help.
--
Charles Krinke
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