Where did the TI supplied kernel come from?

Paul Jackson paul.jackson at redembedded.com
Tue Mar 27 14:19:50 CST 2007

Thanks for the information Thom, that clears things up.



Maughan, Thomas wrote:
> This kernel distributed with the EVM DM6446 Demonstration Version of
> MontaVista Linux is a MontaVista Linux 2.6.10 kernel - this is the same
> kernel that you would get when paying for the licensed MontaVista Linux
> by purchasing the DVSDK from TI.   
> What you get for the license is the updates (bug fixes and new features)
> that are posted on the MontaVista Zone.
> The kernel on the open source git tree hosted by MontaVista is the linux
> 2.6.latest based on kernel.org.    The real time patches by Ingo Molnar
> are available in open source but you would own applying them and working
> through the integration.
> The open source tree was posted by MontaVista to jumpstart the open
> source development, the tree is as good as the community that supports
> it.   Feel free to step up and contribute as I'm sure others would
> benefit getting the NAND support.
> If you are comfortable working with the bleeding edge and adding
> features as you need them, then the open source tree may be a good
> candidate.
> If you want a stable, robust, supported linux product then paying for a
> DVSDK would be recommended.
> Best regards,
> Thom
> -----Original Message-----
> From: davinci-linux-open-source-bounces at linux.davincidsp.com
> [mailto:davinci-linux-open-source-bounces at linux.davincidsp.com] On
> Behalf Of Paul Jackson
> Sent: Tuesday, March 27, 2007 9:03 AM
> To: Davinci-linux-open-source at linux.davincidsp.com
> Subject: Where did the TI supplied kernel come from?
> Hi All
> We have the kernel supplied on the TI website. This kernel is based on
> 2.6.10.
> I am trying to understand how this kernel was created. I presume that it
> is standard 2.6.10 with Montavista patches applied. Did TI apply further
> changes to support the EVM ?
> The reason I'm asking ...
> We really need to get the real time patches which have been applied to
> the main line since 2.6.10. The current kernel has them built in I
> believe.
> I've downloaded the git tree from
> git://source.mvista.com/git/linux-davinci-2.6.git. This is  version
> 2.6.20.
> It looks like some of the Davinci related files are absent from the git
> tree. For example, drivers/mtd/nand/nand_davinci.c is missing. Is this a
> deliberate change or must more patches be applied for it to be
> equivalent to the TI supplied 2.6.10?
> Regards
> Paul Jackson, Red Embedded Design
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