On Tue, 2010-01-12 at 12:24 -0500, Lennart Sorensen wrote: > On Tue, Jan 12, 2010 at 05:03:19PM +0100, Philippe Gerum wrote: > > On Fri, 2010-01-08 at 12:10 +0100, Philippe Gerum wrote: > > > On Fri, 2010-01-08 at 11:59 +0100, Richard Cochran wrote: > > > > On Thu, Dec 10, 2009 at 07:56:28AM +0100, Bernhard Pfund wrote: > > > > > I'm currently working with a fairly new ppc development board > > > > > (P2020RDB) by > > > > > Freescale. The board's BSP went mainline with 2.6.32 and I'd like to > > > > > deploy an > > > > > I-pipe enabled DENX kernel for testing. Now, is there an I-pipe patch > > > > > for said > > > > > kernel on the release schedule anywhere soon? > > > > > > > > I got ipipe-2.6.30 running the p2020ds with minimal effort. I can post > > > > a diff if that might help you. > > > > > > > > I should have my own p2020rdb soon... > > > > > > > > I have noticed some unexplained freezes running xenomai programs on > > > > the p2020ds in SMP mode, but I have not yet had time to look into > > > > it. I hope we can work together to get SMP working reliably. > > > > > > I'm working on fixing the pipeline for 2.6.32/ppc64, which includes SMP > > > mode. 32bit looks ok in UP mode, but I still need to validate SMP there. > > > So it would be great if you could hammer that patch over your P2020 as > > > well once it's ready. ETA, early next week. I'll keep you informed about > > > this. > > > > As expected, upgrading from 2.6.30 to 2.6.32 for ppc64 was a real pain. > > Anyway, here is a patch which applies against 2.6.32.2 mainline; it is > > pretty large because it also includes DENX-originated bits, from v2.6.32 > > to DENX-v2.6.32. > > > > http://download.gna.org/adeos/patches/tmp/adeos-ipipe-2.6.32.2-powerpc-2.8-00.patch > > > > This is expected to work over Xenomai 2.5.0. Tested over 52xx, 85xx, 4xx > > for the 32bit support, pasemi for the 64bit part. I did not manage to > > put my hands on a working ppc32/SMP board to give it a shot yet, so, > > well, I wish you luck. This said, ppc64/SMP has been validated, so there > > is hope. > > > > Sidenote: ftrace may induce a massive stack consumption on ppc64 under > > certain circumstances, causing kernel stack overflows. A way to work > > around this should be to enable CONFIG_IRQSTACKS, but this won't work > > with Xenomai over ppc64 yet, albeit this does work over ppc32. > > > > This patch is in a staging directory for now; waiting for some feedback > > to go further. > > Any chance of getting it without the DENX bits since some of us really > really don't care for those and want to apply against Linus's releases > only. Having the patch always fail to apply is rather annoying. >
It turns out that it really, really annoys me not to have the DENX bits in when working on embedded powerpc targets, but you do have the option of cloning git://git.denx.de/ipipe-2.6.git, and diff whatever you see fit with commit 9d81556f or later. -- Philippe. _______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
