[U-Boot-Users] [RFC] Complex MAPPING support on CFI driver
rui.sousa at laposte.net
Wed May 23 16:37:23 CEST 2007
On Wednesday 23 May 2007 16:27, Andrew Dyer wrote:
> On 5/23/07, Wolfgang Denk <wd at denx.de> wrote:
> > In message <20070523114810.GA7092 at michl.2n.cz> you wrote:
> > > On Wed, May 23, 2007 at 12:58:45PM +0200, Rui Sousa wrote:
> > > > Unfortunately this only takes care of writting operations. Support
> > > > for read would mean further extensive modifications (introduce some
> > > > flash_read() function and use it from cp, md, jffs2, ... commands).
> > >
> > > Posibly... if addr2info returns structure pointer in question it could
> > > also toggle the right gpio line. And it would be nice to have just one
> > > addr2info implementation, right Tolunay? ;-)
> > There is no hook anywhere that would trigger when running a command
> > like
> The OP didn't mention his architecture,
It's based on ARM11core.
> but I thought using virtual
> memory support might allow him to trap on every access to his flash
> and do the appropriate fixup.
Yes, but that seemed overly complex and too expensive (performance wise).
We would need to add interrupt handling code and some extra MMU setup
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