Axiom mcf5235BCC freezing

Alan Cudmore Alan.P.Cudmore at
Wed Jun 30 17:04:42 UTC 2010

I use these boards extensively and have no problems with RTEMS  
freezing. I often leave one running in my office for days, if not  
weeks and it seems stable.

I have used RTEMS 4.9.x, but I'm up to a fairly recent CVS version  
right now with the 4.10 tools.

Somewhere in the 4.9.x release there was a problem with the code in  
start.S on that board. Compare the code in libbsp/m68k/mcf5235/start/ 
start.S between your version and the latest CVS version.
I'm pretty sure this was added:

     move.l  #0x20000201, d0
     move.l   d0,(0x40000008)        | set up 2nd RAMBAR to make 2nd  
port avail to FEC

Otherwise, I cannot think of anything else that freezes the board. Do  
you have a second board to try?

Also, I have not loaded via TFTP. I use BDM most of the time, then I  
also have a modified flash build of RTEMS that I load in place of the  
monitor that comes on the board.


On Jun 30, 2010, at 12:50 PM, Seeberger, Thad [USA] wrote:

> good day, I am new to RTEMS and learning, I built mcf5235 BSP with  
> tests. Downloading with tftp. The Hello World test freezes as well  
> as others. The ticker test gets to TA3 then freezes.
> Where should I go from here? I'm using rtems-4.9 tools on fedora 7  
> installed with yum. The rtems is rtems 4.9.2
> Any pointers appreciated.
> Thanks
> Thad Seeberger
> 540 653 9279
> Thad Seeberger
> 540 653 9279
> _______________________________________________
> rtems-users mailing list
> rtems-users at

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