Am Donnerstag, den 10.05.2007, 16:17 +1000 schrieb Greg Ungerer: > Hi Per, > > Per Hallsmark wrote: > > Dear nommu gurus! > > > > I'm back down the work-pile and trying porting linux 2.6 on a ARM nommu > > processor. > > The boot seems going farly well, but as soon as userland start, it goes > > to some parallell universe or something. > > Unfortunally this platform hasn't any jtag interface so it's a struggle > > to continue. > > > > I wonder if any has already made a 2.6 port for this processor? > > Until now, I've extended the proc-arm7tdmi.S a bit to include a > > PROCESSOR_ID for this > > which seems to be a arm7tdmi with armv4 cache. However, in the latest > > uClinux, the 2.4 tree has > > it's own proc-oki-ml675001.S, indicating CP15, TLB's etc. > > Unfortunally proc-oki-ml675001.S isn't brought forward to 2.6 AFAIK. > > Would it be a good way to try this path, bringing in a new proc.S-file? > > I suspect it should be handled all in proc-arm7tdmi.S for 2.6 > kernels. Given it will be and ARM7 core there should be no need > to create a new set of asm handlers. > > Regards > Greg >
I think that has been splitted up in 2.6, the cache instructions seem to be in cache-*.S. You should make sure that * cache-v4.S is actually included * the correct CONFIG options are used (CONFIG_CPU_CP15,...) * and look into the manual if your cpu really supports those instructions. The ARM7TDMIs that I have seen don't have those mcr instructions, it seems that each manufacturer brews his own soup and you have to write your own asm handlers for cache handling. Regards, Erwin _______________________________________________ uClinux-dev mailing list uClinux-dev@uclinux.org http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by uclinux-dev@uclinux.org To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev
