Porting RTEMS to an Freescale MC9328MX21 with ARM926EJ-S based chip

[Joel Sherrill]

Pablo Salinas wrote:
> Hello there,
>                    Me and a couple of classmates are looking for a 
> good Embedded Systems Design class project. One project idea is to 
> port some RTOS into the board and cpu used in class.
>
> We use a TLL 6219 in-house Board with an ARM 926EJ-S 
> <http://www.arm.com/products/CPUs/ARM926EJ-S.html> CPU inside a 
> MC9328MX21 chipset. The project should be finished by the first week 
> of December, therefore we have roughly 2 months and a half to work and 
> finish it. All three of us have other assignments, therefore we 
> wouldn't like to invest all our time in this project.
>
If you are comfortable with this sort of thing, it is definitely possible. 

Do you have any type of jtag debugger for this setup?  Not a critical issue
but can help.
> Anyway, I was wondering if any of you guys had experienced porting 
> RTEMS into ARM based Boards. Currently, the board uses ARM Embedded 
> Linux <http://www.arm.com/products/os/linux.html> as the non-RTOS, and 
> MicroMonitor <http://microcross.com/html/micromonitor.html> as the 
> Boot Loader.
>
Do you have the MicroMonitor source for this board?  If so, then it will go
a long way to helping you get a basic BSP functional.  It will already have
a lot of functional IO code.
> We all are very knowledgeable of C programming and have good 
> background in Computer Architecture. So, to all of you that had ported 
> RTEMS to an ARM architecture, how feasible do you think this project 
> is? We don't care about having full OS functionality, just the minimum 
> (Process Scheduling, Memory Management, etc) with a basic user 
> interface that would allow to run a simple application that would show 
> that actually the OS is real-time.
>
Minimum is:

+ linker script
+ start code
+ polled serial IO
+ clock tick
+ clean exit

I think you can do that especially if you can leverage
MicroMonitor for working code.

--joel
> Thank you, any feedback is appreciated.
>
> best regards,
>                     Pablo Salinas 


-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel.sherrill at OARcorp.com        On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
   Support Available             (256) 722-9985