Hi all, I was trying to build xenomai for mini2440 as per this post http://www.friendlyarm.net/forum/topic/3032#14050 But when i compile linux kernel-2.6.35.9 using mini2440_defconfig. The build kernel is not booting. It gives kernel panic. my error log is http://pastebin.com/L2mffkym Has anyone successfully booted xenomai-patched kernel in mini2440. Thanks sivakumar
Here http://code.google.com/p/miniemc2/downloads/list is my Xenomai patch for kernel 2.6.35-9.
I am not able to patch the kernel linux-2.6.35.9 with this patch, i am getting error while applying the patch Error log http://pastebin.com/CDscJVm9
I just checked with kernel from there ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.35.9.tar.bz2, I've got no errors. Maybe something wrong with your command? Try to do next: 1. Extract kernel source 2. Copy patch file to the kernel's folder 3. Enter "patch -p0 < ./linux-2.6.35.9-s3c24xx-i-pipe-xenomai-fiq-isr-aufs2.patch" regards, Sergey
Thank you sergey for your reply It works when i enter "patch -p0 < ../linux-2.6.35.9-s3c24xx-i-pipe-xenomai-fiq-isr-aufs2.patch" Now i was able to boot the xenomai kernel and root file system. From the boot log i found drivers for ethernet, nand are loaded. But i am not getting ip address by issuing ifconfig. Can i known any real time drivers are loaded with this kernel like , Rtserial, Rtnet .. Regards sivakumar
I don't use any RT drivers, so please check it yourself with make menuconfig. I just can tell you Ethernet and NAND are working fine on my mini2440.
serg_io, I am looking forward for source code and or image of the emc project !
Hi Luc, I'm working on EMC it in my spare time, I hope in the first part of next month first release will be done.
fantastic ! Kind regards Luc
Hello Sergey, I have compiled and installed linux3.1 in mini2440 with rt patch with yaffs2 file system, everything running perfectly fine , but system respond very slow. If i type anything on console response comes very slow, console generate so many interrupt for one operation. What I did is, download linux 3.1 kernel and apply rt patch, but looks like system is not RTOS. do i need to use rtapi or rt patch itself sufficient for mini2440. I just wants to use mini2440 as hard real time os. please let me know the steps to take or If i am missing anything, there are so many things like rtos, kernel rt patch and rtai, I am confuse between all this things, in short what I have to do to make mini2440 as rtos. Thanks & Regards, armman
There are two patches are available on http://code.google.com/p/miniemc2/downloads/list, which one i should choose for HRT. Thanks a lot in advance.
Try to use this patch: http://miniemc2.googlecode.com/files/linux-2.6.35.9-s3c24xx-i-pipe-adeos... On this forum I saw some time ago guys managed to build kernel 2.6.38.8 and Xenomai 2.6.0 without additional effort, just applying included patches to kernel. I think it will be better to move that way.
I never tried linux3.1 and rt patch. And, I think, Linux never becomes true realtime OS. So may be it have a sense to take your look to the rt_thread OS http://code.google.com/p/rt-thread/ , it is lightweight and intensively developed. Even if you add Xenomai support to your kernel you never get latency more than 100 uS on this platform. If you take a look to miniemc2 SVN server ( http://code.google.com/p/miniemc2/source/browse/), then there you can find source code of Linux 2.6.35.9 + Xenomai 2.5.6, hard realtime extension based on FIQ handler with 10 uS period and buildroot based util for rootfs buildinging. I hope it helps you.