[ag-automation] [LiveCD] Realtime Preemption

[Wolfgang Denk]

In message <43F9AED4.7060807 at tglx.de> you wrote:
>
> > My interest is getting an OSADL compliant (whatever it is or it will
> > be) realtime Linux on embedded plattforms like Freescale MPC5200 or
> > Intel PXA270. Would a LiveCD help?

Was the message you quoted here sent on the ag-automation list,  too?
I did not receive it yet...

> So the first version of the LiveCD would be designed to work for those
> platforms. If anybody's interested in a port for another platform, it
> would be great, if he would join this project and contribute a port.

I think just providing a "port" to any other platform / board is  not
sufficient.  The  whole  idea  of  having  a "LiveCD" is more or less
rstricted to PC's or similar well standardized work environments.  In
real  embedded  systems  the  first  obstacle  is  usually  the  non-
availability of a CDROM drive, followed by the complexity  of  having
to  deal  with  a  plethora  of  different  boot  loaders,  processor
architectures, kernel configurations, different names for the console
device, etc.

It may be possible to provide prebuilt systems  for  a  few  specific
eval boards, but even this is difficult. For example, for the MPC5200
there  is  still  no  really usable (stable) 2.6 kernel. [The current
implementation has  known  and  serious  problems  at  least  in  the
BestComm DMA code.]

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
I have made mistakes, but have never made the mistake of  claiming  I
never made one.                                     - James G. Bennet