On Thu, Jul 18, 2013 at 8:03 PM, Aaro Koskinen <aaro.koskinen@xxxxxx> wrote: > Hi, > > On Thu, Jul 18, 2013 at 09:28:54AM -0700, David Daney wrote: >> On 07/18/2013 05:25 AM, Faidon Liambotis wrote: >> >My goal is to run a standard Debian kernel and its octeon variant[1] on >> >the Ubiquity EdgeRouter Lite. The ERLite needs a couple of patches >> >to boot and work (octeon-ethernet patch, octeon-usb driver) but these >> >are already merged 3.11 and I'll file Debian bugs to enable those >> >settings appropriately. >> > >> >1: e.g. http://packages.debian.org/sid/linux-image-3.10-1-octeon >> > >> >However, when trying to boot a standard Debian kernel in the ERLite I >> >get a 7s delay followed by an oops for a Data bus error on i8042_flush() >> >and ending up with a panic. It looks like the kernel is built with >> >CONFIG_SERIO_I8042=y. The Octeon machine Debian owns prints "i8042: No >> >controller found" but works nevertheless. This isn't the case with the >> >ERLite; I tried 3.2 & 3.10 and got the same oops which went away as soon >> >as I disabled CONFIG_SERIO_I8042. >> > >> >Are there even any octeon machines with i8042 anyway? Should I request >> >for the setting to be disabled irrespective of this bug? >> >> Yes. There is a rare board called NAC38 that was produced by ASUS >> in a 1U chassis. I don't think it is important to support this, so >> the best thing seems to be not to enable SERIO_I8042 > > I think the real bug here is that IO space does not get properly > initialized on Octeon when there is no PCI? So any drivers trying to > probe IO space will produce some interesting results. This is not specific to Octeon, I've seen it on Alchemy as well. A lot of drivers, coming from x86, simply assume that x86-Port-IO space is always available without having to map it first. I'd say it's a bug in the various drivers. Manuel
