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TI frees its DSP toolchain for open source apps (?) - linuxdevices

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krischan.keitsch at alumni

Nov 18, 2007, 8:51 AM

Post #1 of 8 (956 views)
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TI frees its DSP toolchain for open source apps (?) - linuxdevices

Hi,

FYI: Just found this news from TI about freeing the DSP toolchain to open
source developers,

http://www.linuxdevices.com/news/NS4338556106.html

http://open.neurostechnology.com/node/1020

Could someone (with more technical expertise then me) comment on this?

Regards Krischan

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tuomas at kulve

Nov 18, 2007, 8:54 AM

Post #2 of 8 (904 views)
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Re: TI frees its DSP toolchain for open source apps (?) - linuxdevices [In reply to]

Krischan Keitsch wrote:
> Hi,
>
> FYI: Just found this news from TI about freeing the DSP toolchain to open
> source developers,

I think that's only for c54x DSP. OMAP2 has c55x.

--
Tuomas

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soni.trilok at gmail

Nov 18, 2007, 10:43 PM

Post #3 of 8 (896 views)
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Re: TI frees its DSP toolchain for open source apps (?) - linuxdevices [In reply to]

Hi Keitsch,

On Nov 18, 2007 10:21 PM, Krischan Keitsch
<krischan.keitsch[at]alumni.tu-berlin.de> wrote:
> Hi,
>
> FYI: Just found this news from TI about freeing the DSP toolchain to open
> source developers,
>
> http://www.linuxdevices.com/news/NS4338556106.html
>
> http://open.neurostechnology.com/node/1020
>
> Could someone (with more technical expertise then me) comment on this?
>

Please refer my post at linux-omap mailing list.

http://linux.omap.com/pipermail/linux-omap-open-source/2007-November/012049.html

I think neuros link mentions some G-SoC project which should have been
merged with
dspgateway driver developed mostly by Nokia for OMAP1/2, this way we
are bringing
support for lot's of DM series of boards and setting a playground for
DaVinci related processors
dspgateway support.

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S.G.Pickering at bath

Nov 19, 2007, 2:40 AM

Post #4 of 8 (895 views)
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Re: TI frees its DSP toolchain for open source apps (?) - linuxdevices [In reply to]

>> FYI: Just found this news from TI about freeing the DSP toolchain to open
>> source developers,
>>
>> http://www.linuxdevices.com/news/NS4338556106.html
>>
>> http://open.neurostechnology.com/node/1020

I'm not all together sure how this (the Google SoC project) differs
from the dspgateway, except perhaps for the choice of DSP. Why have yet
another way of bridging between ARM and DSP?

>> Could someone (with more technical expertise then me) comment on this?
>>
>
> Please refer my post at linux-omap mailing list.
>
> http://linux.omap.com/pipermail/linux-omap-open-source/2007-November/012049.html

This is interesting, mainly for the dspfs and the request for more
access to the IVA. Thanks for the link.

> I think neuros link mentions some G-SoC project which should have been
> merged with
> dspgateway driver developed mostly by Nokia for OMAP1/2, this way we

Certainly it ought to have been, or am I missing something - was it merged?

> are bringing
> support for lot's of DM series of boards and setting a playground for
> DaVinci related processors
> dspgateway support.

I had a look at the DaVinci processor information available from Ti and
it seems they don't really want to give much away (probably because
this is their current main model line or something like that).

We do already have a Linux Ti toolchain (
https://www-a.ti.com/downloads/sds_support/targetcontent/LinuxDspTools/index.html) which is for the C55x only (i.e. is useful to us). I'm not sure the release of another (similar afaict) toolchain for the C54x will make any odds to us (except perhaps that Ti are embracing open source developers
:).

Simon

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dufkaf at seznam

Nov 19, 2007, 3:36 AM

Post #5 of 8 (892 views)
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Re: TI frees its DSP toolchain for open source apps (?) - linuxdevices [In reply to]

Simon Pickering wrote:
> I'm not all together sure how this (the Google SoC project) differs
> from the dspgateway, except perhaps for the choice of DSP. Why have yet
> another way of bridging between ARM and DSP?

Either C54x architecture is more limited (no MMU? no space for
multitasking core like DSP BIOS?) or this is really quick student hack
for G-SoC without deep research for existing alternatives.

> We do already have a Linux Ti toolchain (
> https://www-a.ti.com/downloads/sds_support/targetcontent/LinuxDspTools/index.html) which is for the C55x only (i.e. is useful to us). I'm not sure the release of another (similar afaict) toolchain for the C54x will make any odds to us (except perhaps that Ti are embracing open source developers
> :).

Well the EULA says that it should be used only with TI development board
(without exact definition what it is) so I am not sure that open
source code can be compiled with it and result published for usage with
770 or N8x0 even if our tablets contain silicon made by TI and it is
non-profit. Perhaps more friendly licencing terms similar to this C54x
toolchain would be nice to have for our C55x toolchain too.

Frantisek
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S.G.Pickering at bath

Nov 19, 2007, 3:55 AM

Post #6 of 8 (895 views)
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Re: TI frees its DSP toolchain for open source apps (?) - linuxdevices [In reply to]

>> We do already have a Linux Ti toolchain (
>> https://www-a.ti.com/downloads/sds_support/targetcontent/LinuxDspTools/index.html) which is for the C55x only (i.e. is useful to us). I'm not sure the release of another (similar afaict) toolchain for the C54x will make any odds to us (except perhaps that Ti are embracing open source developers
>> :).
>
> Well the EULA says that it should be used only with TI development board
> (without exact definition what it is) so I am not sure that open
> source code can be compiled with it and result published for usage with
> 770 or N8x0 even if our tablets contain silicon made by TI and it is
> non-profit. Perhaps more friendly licencing terms similar to this C54x
> toolchain would be nice to have for our C55x toolchain too.

Good point.

Simon
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nils.faerber at kernelconcepts

Nov 20, 2007, 4:45 AM

Post #7 of 8 (882 views)
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Re: TI frees its DSP toolchain for open source apps (?) - linuxdevices [In reply to]

Simon Pickering schrieb:
>>> We do already have a Linux Ti toolchain (
>>> https://www-a.ti.com/downloads/sds_support/targetcontent/LinuxDspTools/index.html) which is for the C55x only (i.e. is useful to us). I'm not sure the release of another (similar afaict) toolchain for the C54x will make any odds to us (except perhaps that Ti are embracing open source developers
>>> :).
>> Well the EULA says that it should be used only with TI development board
>> (without exact definition what it is) so I am not sure that open
>> source code can be compiled with it and result published for usage with
>> 770 or N8x0 even if our tablets contain silicon made by TI and it is
>> non-profit. Perhaps more friendly licencing terms similar to this C54x
>> toolchain would be nice to have for our C55x toolchain too.
>
> Good point.

I had a quite longish discussion with TI DSP OSS support about a year
ago. And after some weeks of back an forth the guy said, that they (TI)
would have no problem with open source code being developed with this
toolchain and even binary versions of the code being redistributed - as
long as noone makes money from using the toolchain, I guess.

I also explicitely pointed him to this "development board" exception in
the license agreement and his reaction was more or less "as long as you
use it with TI CPU it is fine", which would be hard not to do ;)

Here is the final full quote from Thomas Maughan from TI:
---
Nils,

I've got quite a busy schedule right now - here's the quick answer.

Providing source and binaries that are your work is OK - just don't post
the tools themselves. Your posts would only then be useful to those
that are equipped with the same Linux DSP Tools which means they've
installed and agreed to the license.

Best regards,

Thom
---

> Simon
Cheers
nils faerber

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dufkaf at seznam

Nov 20, 2007, 6:15 AM

Post #8 of 8 (885 views)
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Re: TI frees its DSP toolchain for open source apps (?) - linuxdevices [In reply to]

Nils Faerber wrote:

> I had a quite longish discussion with TI DSP OSS support about a year
> ago. And after some weeks of back an forth the guy said, that they (TI)
> would have no problem with open source code being developed with this
> toolchain and even binary versions of the code being redistributed - as
> long as noone makes money from using the toolchain, I guess.

Good news overall, thanks. Still it would be nice to have the agreement
text cleaned up. TI's opinion may change without warning and the text as
it is now is not so friendly. But it is good to know that chances of
unhappy calls from TI's lawyers are low :-) One more reason to take DSP
development seriously.

Frantisek
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