[Buildroot] a special ramdisk

[Peter Korsgaard]

>>>>> "Charles" == Charles Krinke <charles.krinke at gmail.com> writes:

 Charles> Gentlemen:
 Charles> I'm looking for a little advice on a non-buildroot issue. An answer of
 Charles> RTFM would be fine but a URL for the FM would help.

 Charles> I need to use 2MByte of battery backed SRAM in my PPC8321 design
 Charles> running Linux built with buildroot. The requirement is that this SRAM
 Charles> have a file system on it so that programs can
 Charles> open()/read(),write(),close(). The RAM is at a specific address and I
 Charles> can map it into memory just above the main DDRRAM.

 Charles> So, the question is:  "Is there a way to create a ramdisk at a
 Charles> specific address, perhaps using /dev/mem, mmap and other utilities?"

That sounds like pramfs:

http://pramfs.sourceforge.net/

Never used it though.

-- 
Bye, Peter Korsgaard