[uClinux-dev] MTD + ARM7TDMI + kernel 2.6

Greg Ungerer gerg at snapgear.com
Tue Oct 11 19:36:09 EDT 2005


Hi Hakan,

Håkan Kvist wrote:
> I'm running an embedded system based on a ARM7TDMI (ARM7 without FPU
> and MMU). I would very much like to get access to the nand-flash
> memory on my board.
> 
> The MTD sub-system of the kernel depends on the alignment trap
> handler, which for ARM requiers MMU. 
> 
> Is the whole MTD subsystem dependent on the alignment trap handler,
> or is it possible to get a working MTD subsystem, when leaving out
> parts that requires support for unaligned access? And in that case,
> which parts should be excluded?

I seem to recall that the main problem was when using JFFS2 on
an MTD partition. But there might have been more to it.

Regards
Greg


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