[Diy_efi] new EFI controller

[Henning Baldersheim]

At 19:30 3/11/2003 +1300, you wrote:
>How are you finding ECOS??
>I was actually digging into RTEMS for another project I've got, so that
>would have been my preferred way, didn't even think about ECOS.
>Comments concerning it? anything strange like no fork??

I also looked at rtems, but it did not seem mature enough for easy porting. 
There were traces in the mail archives about 555 and variants, but it had 
not come to far.
So far I am very impressed with ecos.
It satisfies my needs very well. I try to stick with posix based 
interfaces. That is what I have used earlier. Porting and scalability is 
excellent. I would recommend getting the book they refer to on the main 
page. That made things very clear.
Performance and so seems to be similar to rtems, but I think they offer a 
richer api.


>----- Original Message -----
From: "Henning Baldersheim" <balder at captech.no>
>To: "List for general do-it-yourself EFI talk" <diy_efi at diy-efi.org>
>Sent: Tuesday, March 11, 2003 7:17 PM
>Subject: Re: [Diy_efi] new EFI controller
>
>
> > At 21:58 3/10/2003 -0800, you wrote:
> > >On Tue, Mar 11, 2003 at 06:48:30PM +1300, Bevan Weiss wrote:
> > > > I don't think I'd want to run a full fledged linux kernel on it,
>especially
> > > > with the added execution cost of real time scheduling.
> > >
> > >I wouldn't run the *entire* kernel on it.  I'd strip it down to the IO,
>VM,
> > >and scheduler.  The upside is there are already tools for the PPC and you
> > >could write an emulator which allows you to develop the software on
>Linux.
> >
> > I considered linux too. That was my first choice. I chose ecos, beacuse it
> > is much more scalable and has real real-time abilities.
> > Linux also wants a mmu that the mpc555/565 lack.
> > It would not scale down as well.
> > And there where no port in progress or planned anywhere.
> > The inquires I made all pointed either to ecos or rtems.
> >
> >
> > >The kernel would provide IRQ distribution, serial IO, and IO to onboard
> > >devices
> > >via drivers.  The major upside is that you don't end up writing your own
> > >multitasking kernel for the ECU, and a lot of the basic management is
>handled
> > >for you.
> > >
> > > > I agree that the cost of the MPC565 isn't ideal, especially in low
>volumes.
> > > > However the level on integration removes any extra costs that would
> > > > otherwise be required.  All that's really left for the hardware design
>is
> > > > connecting up some filtering components and some protection for the
>inputs.
> > > > Outputs just require the driver hardware to be sorted, which shouldn't
>cost
> > > > much.  It should easily come in under $500 for the entire unit.
> > >
> > >Maybe.  From what I've seen, the more expensive and complex a chip is,
>the
> > >more
> > >support hardware and special board routing is required.  Not to mention a
>lot
> > >of startup code just to get the thing to the point of talking to the
>outside.
> >
> > ECOS comes with flash support, clock and support for both serial ports. It
> > was not to hard to port it to the phytec board, as it had already been put
> > onto a couple of other boards.
> >
> >
> > >--Perry
> > >
> > >--
> > >Perry Harrington                        Data Acquisition &
> > >Instrumentation, Inc
> > >perry at dainst dot com
>http://www.dainst.com/
> > >
> > >Those who would give up essential liberty to purchase a little temporary
> > >safety
> > >deserve neither liberty or safety. Nor, are they likely to end up with
>either.
> > >                              -- Benjamin Franklin
> > >
> > >_______________________________________________
> > >Diy_efi mailing list
> > >Diy_efi at diy-efi.org
> > >http://www.diy-efi.org/mailman/listinfo/diy_efi
> >
> >
> > _______________________________________________
> > Diy_efi mailing list
> > Diy_efi at diy-efi.org
> > http://www.diy-efi.org/mailman/listinfo/diy_efi
> >
>
>_______________________________________________
>Diy_efi mailing list
>Diy_efi at diy-efi.org
>http://www.diy-efi.org/mailman/listinfo/diy_efi


_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi