Re: Porting ELKS

Raghavan
2003-07-21T05:09:27Z

Syed et al,

Thanks for the Info.

Let me explain the background a little bit as to why I am exploring this. It
will give you a better picture.

I wanted to have a few applications on Blackfin DSP. Let's say like web
server, rtsp server etc...

I pick up any free application on the Web , they all run on POSIX compliant
OS like LINUX.
Porting a full fledged LINUX is really a tough job ( ?) , so I thought ELKS
was a good option and started looking at it.

ucLinux seemed a good Idea, I checked with ADI, the answer I got is "The
ucLinux port is on the way , but it could take a while .."

I need to have a OS on the BLACKFIN quickly ..so that I get the applications
on it ..and hence I was thinking ELKS ...;

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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