Re: Porting ELKS

Syed Faisal Akber
2003-07-21T16:48:21Z

Porting ELKS to Blackfin would be a complete and total rewrite of the
memory management. The segmented memory model doesn't suit the Blackfin
processor well and would probably degrade the performance on that
processor.

eCOS is POSIX compliant.

On Mon, 21 Jul 2003, Raghavan wrote:

>
> Are you saying ELKS would be inefficient on the DSP Processor ..or is it
> that porting ELKS on Blackfin be like a total rewrite ?

>
> Is eCOS port feasible like say in a 3-4 months time frame ? Is eCOS POSIX
> compliant ..so that we can get any application compile & run on it easily ?
>
> Bye,
> Raghavan V
>
>
>
>
>
> ----- Original Message -----
> From: "Syed Faisal Akber" <faisal.akber@utoronto.ca>
> To: "Raghavan" <raghavan.viswanathan@wipro.com>
> Cc: <Linux-8086@Vger.Kernel.Org>
> Sent: Monday, July 21, 2003 1:12 AM
> Subject: Re: Porting ELKS
>
>
> > Hi Raghavan,
> >
> > I think that porting ELKS to the Blackfin is a waste of time. ELKS is
> > written to take advantage of 8086 processor quirks. The Blackfin (or MSA)
> > architecture is quite a bit different.
> >
> > (1) The Blackfin does not have an TLB based MMU. You cannot use Linux,
> > but you can use uClinux. ELKS is similar to uClinux but the memory models
> > are very different.
> >
> > (2) You may want to start using uClinux. There already exists a port for
> > Blackfin. You will probably have to contact Analog Devices to get more
> > information regarding this.
> >
> > Regards,
> > Faisal
> >
> > On Fri, 18 Jul 2003, Raghavan wrote:
> >
> > > Hi,
> > >
> > > I am intending to port ELKS on to Analog Devices's Blackfin DSP
> Processor.
> > >
> > > I am having a couple of questions
> > >
> > > (1) Does ELKS take advantage of the MMU facility of the x86 Systems ?. I
> ask
> > > this because the Blackfin does not.
> > >
> > > (2) What would be a good strategy to start the porting exercise ? Any
> > > previous porting lessons would help.
> > >
> > > Bye,
> > > Raghavan V
> > >
> > >
> > > -
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> >
>
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