> On 01/25/2012 08:43 AM, Peter Meerwald wrote: > > Hello Tom, > > > >>> MLO/SPL + current u-boot breaks the USB ethernet patches (i.e. booting > >>> via tftp) > >> > >> Even with 'dc off' before you start usb? > > > > I was not aware of the u-boot command 'dc off' -- yes, it solve my USB > > ethernet problem > > > > here is my story (from bisecting): > > > > v2011.06 + Koen et al. patches (git://github.com/koenkooi/u-boot.git) > > works > > > > shortly afterwards, dcache was enabled (commit > > c2dd0d45540397704de9b13287417d21049d34c6) and USB ethernet fails > > > > v2011.09 works if using 'dc off' before 'usb start' (I tried it as a > > recent non-SPL u-boot version) > > > > u-boot current (137703b811502dfea364650fb3e17f20b4c21333) works as well > > with 'dc off' before 'usb start' > > So what's going on is that the dcache has been enabled now, but the USB > stack is not safe, so we have to issue 'dcache off' (or 'dc off') before > starting USB (or in other cases, networking).
Why would it not be safe? Because we don't have the unified cache ops in place yet? :-( M _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
