On Thu, Feb 28, 2008 at 12:57:47PM +0000, Daniel Laird wrote: > I have been happily using Linux 2.6.22.1 for ages on PNX8550 (STB810). > I have recently decided to step up and move onto Linux 2.6.24 series. > However I am not getting very far. :-( > It seems that all the clock stuff has changed again (since 2.6.22.1) > and this is causing issues. Yes, it's a bit special and I don't have any possibility to test the PNX code so I left it mostly untouched when rewriting the timer code. Sorry about that but eventually I had to go ahead. Vitaly Wool eventually submitted a few patches to fix things but as your testing seems to show that wasn't quite enough. That far about the history of the changes. > The board crashes as soon as local_irq_enable is called in main.c > > I was wondering if anyone out there might also be running on an > STB810/JBS PNX8550 based system and have any ideas as to why I am > crashing. > I know that PNX8550 does not enable the R4K Clock source stuff as the > chip is a bit 'special' and requires the two timers to be used instead > of one. csrc-r4k.c and cevt-r4k.c assume a standard compliant R4000-style c0_count and c0_compare register. The PNX chips violate the expected behaviour badly so can't use these functions. But that's not very much of a problem. The timer code is module and it is easy to write something like csrc-pnx.c and cevt-pnx.c to drive a PNX style count/compare timer. Will look over the code to see if I can spot what crashes the PNXes. Ralf
