From mboxrd@z Thu Jan 1 00:00:00 1970 From: "C.Newport" Date: Thu, 09 Sep 2004 15:46:21 +0000 Subject: Sun4D SMP now works OK, serial console broken - was Re: More Sun4d tests Message-Id: <200409091646.21205.crn@netunix.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: sparclinux@vger.kernel.org My SS1000E seems to be stable with 2.4.27 after fitting a frame buffer and keyboard. It rebuilds a kernel OK in SMP mode. Serial console is still broken, there seems to be a problem with the sunzilog driver. What other Sun machines use sunzilog.c as the serial console ?. Is this problem really a sun4d issue or is it generic to sunzilog ? On Saturday 21 August 2004 1:24 pm, C.Newport wrote: > Another interesting result - > Running 2.4.27 SMP on the SS1000E with only one system board > fails in similar ways but much sooner. For example the serial > console keyboard reading starts producing garbage almost > immediately rather than after several minutes with 3 boards. > > I suspect a marginal timng issue of some kind. > > The Sun4d hardware adds latency issues because arbitration has > to go via the XDBus to the control board and back, rather than > being local as on the single board Sun4M systems. > The local bus on a system board is therefore faster than that on > (for example) the SS20 in order to reduce total latency with > multiple boards. > > - > To unsubscribe from this list: send the line "unsubscribe sparclinux" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html