Getting mtd to work with IBM Evaluation boards (Ebony/Walnut)

[bandwidthcrunch]

http://kelp.or.kr/korweblog/stories.php?story=04/06/30/7742286 is
doing something with one of these boards .


On Mon, 8 Nov 2004 21:19:32 +0000 (GMT), Chan Siu Ming
<namely_void at yahoo.co.uk> wrote:
> Hello,
> I'm trying to get mtd to work with IBM Walnut and
> Ebony PPC evaluation boards. I tried with mtd CVS
> from 2004.11.03 and Linux 2.6.9, but seem to have
> some problems. Here's first what I did do with
> success:
> * patched kernel with CVS mtd and compiled it,
>   everything into the kernel - no modules. I'm
>   not quite sure what I should have enabled in
>   the config, but I guess these boards have CFI
>   AMD chips in them.
> * populated /dev with the MAKEDEV in mtd tree
> * compiled the mtd utils
> My problems are:
> * There doesn't seem to be a map for Walnut boards,
>   anyone has got one?
> * Ebony can read from the flash well, but cannot
> write.
>   Flash_info says: "0 erase regions". Flash_unlock and
>   all write attemps fail, when trying to open the
>   device in O_RDWR or O_WRONLY mode. What might be
>   the problem?
> Tested the physical ram test device on Walnut (mapped
> to the boards SRAM at 0xFFF00000) and that worked
> fine.
> 
> Thanks for any help.
> 
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