On Mon, Feb 04, 2002 at 10:57:24AM +0000, Russell King - ARM Linux wrote: > On Mon, Feb 04, 2002 at 10:42:56AM +0000, Ben Dooks wrote: > > I am having problems with this card and getting linux on it. As soon as > > the kernel starts, the VGA display blanks a few lines, then the machine > > seems to lock solid. > > > > I have tried 2.2.19-rmk2-pre2, the debian 2.2r2 and 2.2r4 netwinder > > kernels, and a 2.4.17-rmk4. (I have yet to try without VGA console). > > > > Has anyone had one of these devices running on an CATS, or with > > ARMLinux before? > > I have a suspicion. > > After asking someone with a Sparc with an IGA1682 chip (the predecessor > to the CyberPro 2000, but mostly register compatible) to try our > cyber2000fb driver, it appears their chip caused the machine to NMI > while accessing the chip. On an x86 PC, this normally means "system > error". > > On the netwinder, we turn off all the PCI SERR and PERR reporting > (although some still gets through). I suspect that the same sort of > thing is happening on the CATS, and its throwing the hardware into > madness.
I think we have a PCI mapping problem, as registers seem to be comming back as 0xff... note, we've used the card's own x86 bios code to get it to an useable state (it displays the logo fine...) so we may have something different to the netwinder. > The solution? I have no idea - I don't have any clues to suggest why > these chips behave like this, nor what tweaks may be needed to make > them behave. However, there are rumours around that indicate that > IGS did admit that the PCI parity logic inside the CyberPro chips > were broken. Your bios32.c is disabling parity errors (iirr, correctly) I am in the process of debugging what is going on, and will report back as soon as i've worked out what is going on! cheers, -- Ben Nothing is so absurd that it cannot have been said by a philosopher. _______________________________________________ http://lists.arm.linux.org.uk/mailman/listinfo/linux-arm http://www.arm.linux.org.uk/armlinux/mailinglists.php Please visit the above addresses for information on this list.
