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List:       linux-arm-kernel
Subject:    Re: ioremap non-contiguous phys to contiguous virt?
From:       Nicolas Pitre <nico () cam ! org>
Date:       2004-10-18 21:22:21
Message-ID: Pine.LNX.4.61.0410181720140.4038 () xanadu ! home
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On Mon, 18 Oct 2004, Russell King - ARM Linux wrote:

> >   1) ignore the problem and create a custom maps driver with NO_XIP set.
> >   2) create a custom maps driver, but use the io_table_init mechanism
> >      to map the memory contiguously (eeww)
> >   3) find a clever method to do something like this
> > 
> >      struct memvec mv = { { PHYS0, LEN0 }, {PHYS1, LEN1 } };
> >      void* virt = ioremapv (memvec, 2);
> 
> 4) use the mtdconcat driver, just like the SA1100 map driver does.

mtdconcat will create a larger MTD logical out of multiple physical 
flash chips.  It won't help for the case when the hw is silly enough to 
split the _same_ flash chip over different physical areas.


Nicolas

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