Olimex Support Forum

OLinuXino Android / Linux boards and System On Modules => A20 => Topic started by: margadon on December 04, 2015, 03:54:30 PM

Title: RT Kernel on Olinuxino A20 Image
Post by: margadon on December 04, 2015, 03:54:30 PM
If somebody needs linux-sunxi image with RT kernel 3.4.104 -rt128 with full realtime support, ready to copy to sd card, you can download from here: https://yadi.sk/d/mmXIZZkPkyGNw (https://yadi.sk/d/mmXIZZkPkyGNw)
If you need GUI, do apt-get update apt-get upgrade
Title: Re: RT Kernel on Olinuxino A20 Image
Post by: tomio64 on December 04, 2015, 07:54:17 PM
i am interrest but impossible to download !
best regards
Title: Re: RT Kernel on Olinuxino A20 Image
Post by: margadon on December 06, 2015, 10:10:08 PM
(http://www.foto-me.ru/v.php?id=a7b926fd3c4b8121e371c0b33a61f3c9)
http://www.foto-me.ru/v.php?id=a7b926fd3c4b8121e371c0b33a61f3c9 (http://www.foto-me.ru/v.php?id=a7b926fd3c4b8121e371c0b33a61f3c9)
Title: Re: RT Kernel on Olinuxino A20 Image
Post by: luimarma on September 24, 2016, 03:08:59 PM
Hello,
I am very interested to test.
The first link is failing to download and the second the file is not found?
Can anyone share this?

Thanks in advance,

Luis
Title: Re: RT Kernel on Olinuxino A20 Image
Post by: igorpec on September 25, 2016, 04:46:30 PM
You can built RT kernel with our tools (https://github.com/igorpecovnik/lib) - you only need to enable this patch:

https://github.com/igorpecovnik/lib/blob/master/patch/kernel/sun7i-default/0014-patch-3.4.108-rt136.patch.disabled
Title: Re: RT Kernel on Olinuxino A20 Image
Post by: luimarma on September 26, 2016, 08:52:25 PM
Many Thanks Igor,

Only a pair of questions, to enable the patch shall I just rename 0014-patch-3.4.108-rt136.patch.disabled as 0014-patch-3.4.108-rt136.patch?
Also during the compile script the script asks me several configuration options, I suppose that I have to choose the full preemtive rt kernel, but for the mmc/sd/sdio over i2c I don't really know if I have to maintain the default No.

Reagards,

Luis
Title: Re: RT Kernel on Olinuxino A20 Image
Post by: igorpec on September 28, 2016, 07:55:47 AM
Yes, just remove .disabled from a file name and you are ready to go. You have to deal with new options properly - build is tested, so it should work for you too. That i2c & mmc is probably unrelated ... just leave default.
Title: Re: RT Kernel on Olinuxino A20 Image
Post by: luimarma on September 28, 2016, 12:03:05 PM
Thank you very much.
This worked like a charm.

Regards,

Luis