Hi Graziano, That's great news! At least we're making progress...
For others reading this thread I should explain that I built Graziano a ELAN-specific kernel and initrd (with "CONFIG_X86_ELAN=y" instead of "CONFIG_M486=y") and that is what is now booting on the net4501. Looks like we're going to need an "elan" kernel variant like we have a "geode" kernel variant. I also get the "/init: eval: line 1: KCMD_libata.dma=0: not found" error when I specify that kernel command-line argument on a system that boots successfully so I think that is nothing to worry about. What you *should* be seeing are lines like: LINUXRC: Root: /dev/ram0 LINUXRC: Looking for leaf.cfg... LINUXRC: Mounting /dev/sda1 on /var/lib/lrpkg/mnt as vfat LINUXRC: Sourcing leaf.cfg from /dev/sda1 LINUXRC: Generating default dirs... I agree that all the evidence points to your IDE/ATA driver not loading. The "100b:0020" PCI devices are the National Semiconductor DP8381x Ethernet chips whereas the "1022:3000" device seems to be SC520 "ELAN Microcontroller PCI Host Bridge" (from http://www.pcidatabase.com/). lspci is not reporting the disk controller separately, which seems strange to me. On other machines I always see a separate PCI device for the disk controller. I suspect the solution will end up being to enable a further .config entry for the kernel, but the key is to know which one. The kernel options have changed a lot over the past few years. You might want to try manually modprobe'ing the pata_amd module, just in case that has any effect. Might also be worth a post to the soekris-tech mailing list to see if anyone there can advise on the 2.6.35.11 .config entries for a net4501. dMb On Sun, 2011-05-01 at 18:30 +0200, Graziano Brioschi wrote: > Thank you very much David! > > I have downloaded the elan kernel and the initrd.lrp from your site and > using these two new packages my system boot! > However the system does not complete the startup sequence, giving me he > following messages on my serial console: > > ........ > [ 4.077117] Write protecting the kernel text: 1636k > [ 4.078275] Write protecting the kernel read-only data: 744k > [ 4.078275] Write protecting the kernel read-only data: 744k > LINUXRC: Bering - Initrd - 4.0.0 Rev 12 uClibc 0.9.30.3 > LINUXRC: Parsing kernel command line... > /init: eval: line 1: KCMD_libata.dma=0: not found > LINUXRC: Loading modules... > LINUXRC: Root: /dev/ram0 > LINUXRC: Looking for leaf.cfg... > LINUXRC: Generating default dirs... > LINUXRC: Generating /tmp & /var/log partitions ... > LINUXRC: PKGPATH is empty or unset. Can not install packages. > LINUXRC: LRP= is empty or unset. Can not install packages. > LINUXRC: chown and chmod /dev... > LINUXRC: Loaded Packages > LINUXRC: Creating new rootfs... > LINUXRC: Switch_root into new rootfs... > can't run '/etc/init.d/rcS': No such file or directory > > Please press Enter to activate this console. > ....... > > I think that this probles is related to the IDE driver kernel that is > not present... > Here the content of "/linuxrc.err" > > / # cat linuxrc.err > Next iteration: Thu Jan 10 02:40:07 UTC 1980 > Probing platform:rtc_cmos ... not found. > Probing platform:pcspkr ... not found. > Probing platform:serial8250 ... not found. > Probing pci:v00001022d00003000sv00000000sd00000000bc06sc00i00 ... not found. > Probing pci:v0000100Bd00000020sv0000100Bsd00000020bc02sc00i00 ... not found. > Probing pci:v0000100Bd00000020sv0000100Bsd00000020bc02sc00i00 ... not found. > Probing pci:v0000100Bd00000020sv0000100Bsd00000020bc02sc00i00 ... not found. > Successfully probed 0 modules for 7 modaliases, currently loaded: > Not tainted > vfat 6542 0 - Live 0xb483b000 > fat 34532 1 vfat, Live 0xb4825000 > isofs 17079 0 - Live 0xb4809000 > / # > > and my "lsmod" output: > > / # lsmod > Not tainted > vfat 6542 0 - Live 0xb483b000 > fat 34532 1 vfat, Live 0xb4825000 > isofs 17079 0 - Live 0xb4809000 > / # > > and, finally, my "lspci" output > > / # lspci > 00:00.0 Class 0600: 1022:3000 > 00:12.0 Class 0200: 100b:0020 > 00:13.0 Class 0200: 100b:0020 > 00:14.0 Class 0200: 100b:0020 > / # lspci -m > 00:00.0 "Class 0600" "1022" "3000" "0000" "0000" > 00:12.0 "Class 0200" "100b" "0020" "100b" "0020" > 00:13.0 "Class 0200" "100b" "0020" "100b" "0020" > 00:14.0 "Class 0200" "100b" "0020" "100b" "0020" > / # > > I try to load the "ata_generic" modules using modprobe (no problem > loading it) and make /dev/sda and /dev/sda[1-4] devices using mknod, but > I cannot mount my CF.... > > I found on a tecnical list on soekris site > (http://old.nabble.com/Linux-IDE-driver-for-CF-card-td19766587.html) > that speaks about a "generic/default IDE driver": > ... > The CF card has started working after activating "generic/default *IDE* > chipset support (*IDE_GENERIC*)" support in the kernel. I guess this > driver doesn't support UDMA, but the "National SCx200 chipset support" > or "AMD CS5535 chipset support" drivers didn't work. > .... > > and an other document related to debian on net4501 > (http://www.feep.org/weblogs/josh/archives/69-Debian-on-a-Soekris-net4501.html) > > speaks about an "ide_generic" module that I cannot find on BuC 4.0: > > .... > Rebuild initramfs with ide_generic support.| > echo "ide_generic" >> /etc/initramfs-tools/modules > update-initramfs -t -u > .... > | > > In few days I will install a linux build system and I will try to follow > the instructions in the wikies pages related to development. > > What do you think about this? > Thanks a lot for your time > cheers > graziano > > > Il 29/04/2011 12.35, davidMbrooke ha scritto: > > Hi Graziano, > > > > Ah, OK. I did not spot that some of your output was from the net4801... > > > > There is a kernel .config option "CONFIG_X86_ELAN" which is not set for > > our current 4.x builds. It is not completely clear to me what effect > > setting this will have, but it is worth a try. If this is indeed the > > problem we would add another kernel variant "elan" like we have already > > for i486, i686 and geode. > > > > In order to build a custom kernel you can follow the instructions at > > http://sourceforge.net/apps/mediawiki/leaf/index.php?title=Bering-uClibc_4.x_-_Developer_Guide_-_Preparing_the_Build_Environment > > and on subsequent pages. It is not particularly difficult if you already > > have a suitable Linux build host available. Once the buildenv is ready > > run "./buildtool.pl build linux" to build the standard kernels. > > > > Making the changes necessary for a custom kernel is not difficult but it > > is currently not documented in the Wiki. Once you get as far as building > > the standard kernel contact me directly for further advice. In the > > meantime I will also try to build a specific "elan" kernel for you to > > try. > > > > Regards, > > dMb > > > > On Fri, 2011-04-29 at 11:35 +0200, Graziano Brioschi wrote: > >> hi David > >> > >> I think there is a misunderstanding about the problem. > >> I have two machine: > >> - the first is a Soekris net4501 and on this machine the kernel does not > >> boot; I can see the syslinux output about loading of /syslinux/linux and > >> /initrd.lrp, but nothing more. The system hangs. On this system BuC3.1 > >> runs correctly. > >> - the second is a Soekris net4801 that I boot using the same compact > >> flash generated for the first net4501 to verify that the compact flash > >> has not some kind of problem; BuC4.0 runs correctly without problems, > >> but I have seen the "libata.dma=0 not found" error. > >> > >> I hope the test environment is more clear now. > >> I think that there is a kind of incompatibility between the i486 kernel > >> and the AMD ELAN SC520 processor that is installed on net4501. > >> Is there a simple way to rebuild a kernel for the AMD ELAN CPU? Is a > >> difficult operation? Can I try to built it? > >> > >> thanks a lot > >> graziano > >> > >> > > > > > > ------------------------------------------------------------------------------ > > WhatsUp Gold - Download Free Network Management Software > > The most intuitive, comprehensive, and cost-effective network > > management toolset available today. 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