ARINC-653 API

[Mathew Benson]

First, I don't know what POK is.  Can you post a link to some info?

Second, I thought RTEMS was an RTOS.  In my experience the OS doesn't run "in partitions".  The partition is similar to a heavyweight thread or POSIX process with a two layer scheduler to provide the time partitioning.  The ARINC "process" is similar to a lightweight thread or POSIX thread.  The APEX library provides the ARINC API, but the OS provides the partitioning.

Finally, I have heard there is a Linux implementation of ARINC 653, but I've never seen or used it.  My Linux environment isn't really ARINC 653.  It provides the APEX API so the partition code compiles and executes, but without significant OS changes, it doesn't actually provide space/time partitioning.  ARINC 653 facilitates portability and provides safety.  My Linux environment just allows me to easily port in ARINC code.  It's not suitable for all testing and definitely not suitable for production.

Sorry, our Linux implementation is not open source, but it's fairly simple to write your own APEX API, if you don't need to actually implement partitioning. You just need to use the ARINC 643 header file, and write implementation code for it to map ARINC calls to OS calls.  It's only about 30 or 40 functions.





Sent from my iPhone

On Aug 3, 2012, at 3:19 PM, Julien Delange <julien.delange at gmail.com> wrote:

> Hello,
> 
> I might be of particular interest to have a look at the rtems/arinc653
> project [1] being actually developed in the Summer Of Code (I put our
> student Cc: to this mail). Also, I think you might be interested by
> having a look at POK [2]. Our project is to virtualize RTEMS on top of
> POK and even if this is not yet ready, you are more than welcome if
> you want to contribute ! At this time, it focuses more on the
> interaction between RTEMS being in partitions and POK that isolates
> RTEMS instances. If you want to write an ARINC653 layer on top of POK,
> I think it night be a nice contribution to this project.
> 
> Also, you seem to use ARINC653 functionalities on top of Linux but I
> am very curious about the ARINC653-compliance of Linux. Did it provide
> time and space partitioning as regular ARINC-compliant OS do ?
> 
> Anyway, good to see there is an interest about such a project,
> 
> Regards,
> 
> [1] http://www.rtems.org/wiki/index.php/RTEMS_Paravirtualization
> [2] http://pok.safety-critical.net/