Hi Gaurav,

Sure. My intention of working on this is actually to provide most of the people a simple tool use or a guide to create your own. Because I hardly see anything useful for DSP programming except Ti's complex system. Most of the standalone tools are out dated. 
But currently it's in very early stage, full of hard coded hacks and potential sychornization issue, no real memory management… and documentation is little and it will take me a long time to wrap up what I currently have done.
If you're not in a hurry, I probably will post some good stuff during summer time. Since I have to figure out everything by myself…
In general, I wrote a device driver for DSP, and that's it.

So I'm still seeking help for setting up DSP MMU table walking(TRM explained but I'm not sure where to put these tables, some implementation confusion) and debug the kernel warning for in band error seen by IVA_SS. 


On Friday, March 14, 2014, Gaurav Chaturvedi <gaurav.chaturvedi@nsl.eu.com> wrote:
Hi Airie,

Before going further, may I ask you the steps you followed to include DSP functionality in kernel/filesystem. Also, the steps to port some code to DSP.

Since you have done it recently, I thought these would be fresh in your mind and can be helpful for all of us. The contents on the forum are confusing in some sense or the other.

Thanks in advance.


On 13/03/2014 20:08, Wenjia Zhou wrote:
Hi all,

I am developing a simple framework to load program onto DSP core under Linux. (Not using any TI software packs)
Currently, I am able to run my kernel module and load a LED toggle program to DSP L2RAM and able to see LED blinking. 
But I keep getting kernel warning message : In-band Error seen by IVA_SS  at address 0. If I stop the DSP then it stops.
My guess is some configuration for L3 firewall caused this. Anyone has an idea on how to fix this? Or where can I find the initial configuration for L3 firewall from OMAP3.5 kernel source?

Thanks a lot !
Airie Zhou

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Wenjia Zhou
University of Illinois, Urbana-Champaign
College of Engineering, Electrical Engineering
Minor Computer Science
Member of Eta Kappa Nu