Hi Sebastian, On Mon, May 13, 2013 at 11:17:21AM +0200, Sebastian Hesselbarth wrote: > On 05/13/2013 09:58 AM, Sascha Hauer wrote: > >On Sun, May 12, 2013 at 03:09:04PM +0200, Sebastian Hesselbarth wrote: > >>This commit adds minimal support for the Marvell Dove SoC (88AP510) as > >>first SoC of the Marvell Orion family. Orion SoCs have a different timer, > >>therefore current mach-mvebu and Armada 370/XP Kconfig and Makefiles are > >>slightly modified and a new clocksource drivers is added. > >> > >>Signed-off-by: Sebastian Hesselbarth<sebastian.hesselbarth@xxxxxxxxx> > >>--- > >>Note: Linux for Dove expects internal registers to be remapped. For more > >>compatibility with barebox for MVEBU, I did not remap those yet. I rather > >>suggest to allow to add a pre-boot hook right before linux gets booted by > >>barebox. > > > >Damn, I thought that the PowerPC SoCs are the only ones that have such a > >crazy register hiding feature. > > > >I'd really prefer that the barebox memory layout is compatible to the > >existing devicetrees. Otherwise we block the way of probing barebox from > >the devicetree and to start barebox second stage. > > Sascha, > > memory layout will be compatible for sure. Just because I will not > rewrite the whole bunch of dtsi files we built up in the past ;) > > >Is it possible to remap the registers using the kwbimage tool? That way > >every code that runs would see the desired register layout. > > Although possible, I prefer a different approach: > - IIRC all MVEBU SoCs boot up at 0xd0000000 > - Have a regbase variable within barebox that initially points to that > - Have a mvreadl/mvwritel that adds it to reg offsets > - Rewrite _initial_ SoC code to use mvreadl/mvwritel I applied this series, but please get this topic done before more code enters that has to be changed when doing the above. 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
