> On Fri, Jan 25, 2002 at 08:41:10AM +0900, Girish Gulawani wrote: > > > i'm trying to bringup linux 2.4.[2|9] on our board based on LSI mips r4k > > core. [snip] > Seems pretty obvious that cacheflushing for your system is broken. Sure sounds like it. > Verify that arch/mips/mm/c-r4k.c knows how to handle your system. > > Ralf LSI has done a number of R3K and R4K-like designs under their MIPS architecture license which have features that differ from the main stream of MIPS CPUs where the OS is concerned. Cache manipulation is a case in point. If it's not obvious to you from the cache management code, compare the relevant sections of your CPU manual with the MIPS32 spec (which I think is on the web somewhere at www.mips.com) or a copy of the R4000 manual if you can find one kicking around somewhere. Regards, Kevin K.