FPGA Central

Assuming it must be free + open source, does anyone have
any recommendations? 32 bit minimum. I was looking
at the plasma on opencores. Has anyone done a uclinux
port or thought of doing one? Conversely if someone wants
a uclinux port to plasma I'll do it for $$$.

-Dave


--
David Ashley http://www.xdr.com/dash
Embedded linux, device drivers, system architecture

David Ashley schrieb:

> Assuming it must be free + open source, does anyone have
> any recommendations? 32 bit minimum. I was looking
> at the plasma on opencores. Has anyone done a uclinux
> port or thought of doing one? Conversely if someone wants
> a uclinux port to plasma I'll do it for $$$.
>
> -Dave
>
>
> --
> David Ashley http://www.xdr.com/dash
> Embedded linux, device drivers, system architecture
David,

how much $$$ are we talking about?
I am looking for open-source core with uclinux, but OR1K is too large

Antti

In article <[email protected] com>,
"Antti" <[email protected]> wrote:

> David Ashley schrieb:
>
> > Assuming it must be free + open source, does anyone have
> > any recommendations? 32 bit minimum. I was looking
> > at the plasma on opencores. Has anyone done a uclinux
> > port or thought of doing one? Conversely if someone wants
> > a uclinux port to plasma I'll do it for $$$.
> >
> > -Dave
> >
> >
> > --
> > David Ashley http://www.xdr.com/dash
> > Embedded linux, device drivers, system architecture
> David,
>
> how much $$$ are we talking about?
> I am looking for open-source core with uclinux, but OR1K is too large
>
> Antti

I think the leon3 is smaller then the or1k.. But if im wrong ill be
corrected

its also 'standard' so all the tools/os/etc are out there today. Less
development.

There was a pretty good thesis called "Evaluation of synthesizable CPU
cores" (google for it) that compares the LEON and OpenRisc (also
mircoblaze). It goes into resource utilization, performance, etc.

I am currently using OR1200. I did read this Evaluation of
synthesizable CPU cores, I seem to remember it as being biased towards
LEON...

Anyways, one aspect that was not mentioned in that thesis was user
community. Being a member of both the OR and the LEON boards, the LEON
community is far stronger (at least more publically active) Which is a
very big benefit in my opinion. I have yet to jump on the LEON band
wagon yet though. Soley due to laziness.

[email protected] wrote:
> There was a pretty good thesis called "Evaluation of synthesizable CPU
> cores" (google for it) that compares the LEON and OpenRisc (also
> mircoblaze). It goes into resource utilization, performance, etc.

ziggy schrieb:
> In article <[email protected] com>,
> "Antti" <[email protected]> wrote:
>
> > David Ashley schrieb:
> >
> > > Assuming it must be free + open source, does anyone have
> > > any recommendations? 32 bit minimum. I was looking
> > > at the plasma on opencores. Has anyone done a uclinux
> > > port or thought of doing one? Conversely if someone wants
> > > a uclinux port to plasma I'll do it for $$$.
> > >
> > > -Dave
> > > --
> > > David Ashley http://www.xdr.com/dash
> > > Embedded linux, device drivers, system architecture
> > David,
> >
> > how much $$$ are we talking about?
> > I am looking for open-source core with uclinux, but OR1K is too large
> >
> > Antti
>
> I think the leon3 is smaller then the or1k.. But if im wrong ill be
> corrected
>
> its also 'standard' so all the tools/os/etc are out there today. Less
> development.

well LEON3 single project use license is 20 KUSD
and OR1K development is also already commercial

both are way too largish when we are looking for
minimal FPGA CPU that can boot uClinux.

LatticeMico32 is possible the smallest 32Bit RISC
that is uClinux capable, but there is not known if
there will be any uClinux development done for it.

besides the above there are some MIPS like
cores that are potential candidates to be ramped
up to boot uClinux.

but there is still a need for any 'minimal' cross-vendor
FPGA CPU that can boot uClinux IMHO

Antti

Antti wrote:
>>port or thought of doing one? Conversely if someone wants
>>a uclinux port to plasma I'll do it for $$$.
>...
> how much $$$ are we talking about?
> I am looking for open-source core with uclinux, but OR1K is too large
>
> Antti

BTW this discussion moved to email, discussions of money are
somewhat delicate...

-Dave


--
David Ashley http://www.xdr.com/dash
Embedded linux, device drivers, system architecture