On Mon, May 13, 2013 at 03:06:55PM +0200, Sebastian Hesselbarth wrote: > On 05/13/13 12:57, Sascha Hauer wrote: > >On Mon, May 13, 2013 at 11:17:21AM +0200, Sebastian Hesselbarth wrote: > >>The regbase pointer is required as early debug _will_ access register > >>before and after remap and there is no way around it. But > >>mvreadl/mvwritel will be limited to code that sits in mach-mvebu, all > >>drivers will depend on DT. > > > >Having the register base as variable sounds like a good idea. This > >should give us some more flexibility, no matter what we do later. > > > >Please note that normally barebox images are expected to be runnable > >second stage (bootm barebox.bin). Though not really mandatory this still > >is a nice feature for development. This becomes difficult to support if > >the initial code expects the registers at 0xd0000000, hence I suggested > >remapping it in the kwb image so that all second stage code can already > >work on the remapped registers. > > Yeah, this is bugging Thomas and me for some time. The tricky part in > this is, that the register for setting the internal register base is in > the internal registers itself. You don't know the base address, you > cannot remap it - you can't even read it. Thomas is working on > something, but he will have to comment on that. Dosenöffner innenliegend - Can opener inside ;) Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
