| CodeWar | I m hoping to run oneiric on qemu -M versatile but couldn't find the corresponding kernel, can somebody point me to one | 02:51 |
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| === doko_ is now known as doko | ||
| === Crisco is now known as Crismas | ||
| CodeWar | I m looking for an initrd file to use with Lucid ARMEL .. been reading up all over the net .. | 05:35 |
| CodeWar | let me ask a dumb question .. does the initrd file have to change everytime I build the kernel along with zImage? | 05:36 |
| CodeWar | if not where can I find a static one for Ubuntu Lucid? | 05:36 |
| === nrirclog583 is now known as nrirclog | ||
| === fgau_ is now known as fgau | ||
| CodeWar | can folks advise on whats the best way to create an initrd ... | 12:03 |
| ogra | update-initramfs from the initramfs-tools package | 12:03 |
| lilstevie | update-initramfs | 12:03 |
| lilstevie | :) | 12:04 |
| CodeWar | sorry I don't get it .. I m cross compiling for ARM I m done with the compilation and have a bzImage | 12:07 |
| CodeWar | update-initramfs man seems to suggest its going to use kernel image from /boot | 12:07 |
| lilstevie | I don't know any arm devices that use bzimages | 12:08 |
| CodeWar | qemu | 12:08 |
| lilstevie | boot with noinitrd into qemu, then generate your initrd | 12:09 |
| CodeWar | lilstevie, can you elaborate a bit more .. I tried googling for noinitrd .. dont find any relevant examples | 12:14 |
| lilstevie | add noinitrd to the commandline | 12:14 |
| CodeWar | qemu-system-arm -M vexpress-a9 -cpu cortex-a9 -kernel ./vmlinuz -hda ubuntu-arm.img -m 256 -append "noinitrd root=/dev/sda mem=256M devtmpfs.mount=0 rw init=/init" | 12:15 |
| phh | yeah bzImage is x86 only | 12:15 |
| lilstevie | phh: thats what I thought | 12:15 |
| ogra | if its qemu, you dont need that | 12:15 |
| CodeWar | make ARCH=arm CROSS_COMPILER=arm-linux-gnueabi- bzImage modules is that the wrong way to compile for arm? | 12:15 |
| ogra | just omit the initrd from the qemu call | 12:16 |
| ogra | and properly set rootdelay on the kernel cmdline | 12:16 |
| phh | or rootwait ? | 12:16 |
| CodeWar | ogra, without initrd it panics and says cuold not load rootfs | 12:17 |
| lilstevie | CodeWar: thats why you rootdelay | 12:17 |
| CodeWar | lilstevie, thanks let me try that | 12:17 |
| phh | CodeWar: well perhaps you don't have a rootfs on /dev/sda, or because it didn't waited enough, or you don't have proper filesystem | 12:17 |
| phh | or or or or | 12:17 |
| lilstevie | also make ARCH=arm CROSS_COMPILER=arm-linux-gnueabi- | 12:17 |
| CodeWar | phh, got my image using instructions from https://wiki.ubuntu.com/ARM/RootfsFromScratch | 12:18 |
| ogra | ugh, i really need to remove that page | 12:20 |
| CodeWar | ogra_, thats not correct? heck I spent 4 ohours trying to rerun those instructions | 12:21 |
| lilstevie | ogra_: probably even add "Depreciated" to that page | 12:22 |
| ogra | CodeWar, that page is obsolete | 12:22 |
| CodeWar | so rootwait doesn't help | 12:22 |
| phh | CodeWar: what about pasting the error ? | 12:22 |
| phh | it's not really easy to just guess | 12:22 |
| ogra | lilstevie, no, it will get re-written once rsalveti` uploaded the docs for doing what rootstock did with live-build | 12:22 |
| lilstevie | ah ok | 12:22 |
| ogra | then that page will just be a forwarder to the live-build docs | 12:23 |
| === rsalveti` is now known as rsalveti | ||
| ogra | essentially i wouldnt expect anything built with rootstock to work anymore | 12:23 |
| CodeWar | ogra, what part of that page is incorrect? | 12:23 |
| CodeWar | ooops yes I built my .img using rootstock | 12:23 |
| ogra | CodeWar, all :P | 12:23 |
| ogra | its totally outdated | 12:23 |
| CodeWar | Grrrrrrr!!!!!! | 12:23 |
| ogra | use an ubuntu-core tarball instaed | 12:23 |
| CodeWar | well I learnt a lot so .. | 12:23 |
| ogra | configure it in a chroot, then roll an image from it | 12:24 |
| ogra | thats currently the best way to get a custom rootfs | 12:24 |
| CodeWar | ogra, sorry didnt register its been a long day ... is there another wiki | 12:25 |
| ogra | to run arm chroots on x86, just install qemu-user-static | 12:25 |
| CodeWar | ogra, No I need full system emulation not the static one | 12:26 |
| lilstevie | CodeWar: he said use that to roll the image :) | 12:26 |
| ogra | not for rolling your image | 12:26 |
| CodeWar | ok clearly i m light years behind you guys .. throw me some terms I can look them up | 12:27 |
| ogra | even easier though, just use the vexpress installer images | 12:27 |
| ogra | (vexpress is the replacement for the dropped versatile crap) | 12:27 |
| CodeWar | ogra, the oneiric one ? | 12:27 |
| ogra | right | 12:27 |
| CodeWar | yes I figured that let me see hwat was the problem with that I tried earlier today | 12:27 |
| ogra | get the vmlinuz and initrd from the archive, and just boot qemu with it | 12:27 |
| ogra | (and have an empty big enough .img file to install into) | 12:28 |
| CodeWar | ogra, http://ports.ubuntu.com/ubuntu-ports/dists/oneiric/main/installer-armel/current/images/linaro-vexpress/netboot/ right? | 12:28 |
| ogra | yep | 12:28 |
| ogra | and an empty img file thats big enough you can install to it | 12:29 |
| ogra | use qemu-img to create it | 12:29 |
| CodeWar | I can give it another try if you like but it didnt work earlier today .. created a raw qemu image | 12:29 |
| CodeWar | after 15 mins it complainied it could not detect drives | 12:29 |
| ogra | hmm, might be that vexpress only knows cretaind kinds of drives | 12:30 |
| ogra | like SD cards for example | 12:30 |
| CodeWar | it failed at the partitioner | 12:30 |
| ogra | yes | 12:30 |
| ogra | what i said :) | 12:30 |
| CodeWar | yep ;-) | 12:30 |
| ogra | might be needed that you give it the img as SD card in your commandline | 12:30 |
| CodeWar | -sda . . I could try but since I have your attention I m hoping to learn to do this using first princple | 12:31 |
| CodeWar | build bzImage build initrd and boot .. don't knwo how to do the latter | 12:31 |
| CodeWar | is there an easy way to know if it detected that drive using -sda without waiting for it to reach the partitioner | 12:32 |
| CodeWar | at a highlevel it appears this is the way to go right? http://www.aurel32.net/info/debian_arm_qemu.php | 12:38 |
| CodeWar | heres the thing even if I used the vmlinuz and initrd from oneiric installer.. I m going to replace vmlinuz with my built kernel eventually | 12:46 |
| CodeWar | I suspect I d have to generate my own initrd too? | 12:46 |
| CodeWar | same problem .. no disk drive detected | 13:01 |
| CodeWar | qemu-system-arm -M vexpress-a9 -cpu cortex-a9 -kernel ./vmlinuz -initrd ./initrd.gz -hda hda.img -append "root=/dev/ram" | 13:01 |
| CodeWar | these are kernel and initrd from oneiric installers | 13:01 |
| ogra | well, you might need to use something else than -hda here | 13:02 |
| ogra | check the bootmessages of the VM | 13:02 |
| CodeWar | is this something thats been tested on qemu before? | 13:02 |
| ogra | see if it loads an MMC driver | 13:02 |
| ogra | i think the linaro guys used it before | 13:02 |
| * ogra personally hasnt touched qemu since over a year .... no need for that | 13:03 | |
| ogra | *especially* in VM mode | 13:03 |
| GrueMaster | ogra_: Have you seen this? http://rhombus-tech.net/ Would be cool to get their kernel into universe. Make it as easy as possible for their followers to roll their own Ubuntu-supported distro onto. | 16:55 |
| GrueMaster | http://rhombus-tech.net/allwinner_a10/orders/ | 16:56 |
| CodeWar | https://wiki.ubuntu.com/ARM/RootfsFromScratch at the bottom of that page is a prebuilt image (.img and vmlinuz) | 22:27 |
| CodeWar | it works great but if I replace vmlinuz with my own build it says cannot find rootfs.. my question here is, where can I find the .config for that kernel | 22:27 |
| CodeWar | better yet do we know what drivers need to be compiled into the kernel to have it detect qemu disk drives | 22:52 |
| CodeWar | scratch everything I said so far ................ <-----------------> | 23:00 |
| CodeWar | what I really need to find out from you guys is how are we compiling ubuntu kernel for ARM targets, what is the actual command I m on an x86_64 box | 23:00 |
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