Dan, Does anyone have any idea why the LinuxPPC 2.2.13 kernel will not respond to "shutdown -nr now," but HardHat's 2.2.13 kernel will? We are finding things broken in our drivers and applications with the HH version, and that is probably due to the HH version a more straightforward and honest interface than the ones we got "just to work." To solve an immediate need, we need the remote restart function working in LinuxPPC.
Thanks, Mike Flynn > -----Original Message----- > From: Mike Flynn > Sent: Wednesday, September 20, 2000 1:21 PM > To: 'MVista support' > Subject: Differences between HardHat 2.2.13 PPC kernel on CDK 1.0 and > the LinuxPPC 2.2.13 kernel. > > After modifying m8xx_setup.c in linux/arch/ppc/kernel/ > and executing "shutdown -nr now," linux would stop, but not restart. > The kernel (LinuxPPC 2.2.13) is what we have been shipping in > our products. I tried it with your hardhat kernel (CDK1.0) and not > only does the OS shutdown, the Embedded Planet PROM is > accessed and the CLLF will restart. This is good. > > However, with the HH kernel, our video stream glitches. This is bad. > We found that we had to block reading of 4k worth of video and the > video now runs correctly. This is good. > > However, we could no longer read our E2 on our mother board hosting > the CLLF. That's bad. After some time with a scope, we found > that instructions were running faster under your kernel, therefore, our > time delays were now too short. We adjusted them and we read our > E2 just fine and life is good. > > Our applications are compiled on the same system using the > same compiler, but they run differently on the two kernels. It appears > the earlier kernel does not cache instructions and yours does > which means there are differences between them. What are > they? > > We are not able to telnet to our box running your kernel with our > video. It appears no other application gets priority except our > video stream. We need to know what is different about your > kernel to determine how our drivers and applications are being > effected. > > Thank you, > > Mike Flynn > Principal Software Engineer > Enerdyne Technologies > 8402 Magnolia Ave. > Suite C > Santee, CA 92041 > Voice: 619-562-3061 > Fax: 619-562-8802 > MFlynn at Enerdyne.com > > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
