compile sys/bios applications for mcoreloader (linux-c6x)

Jonathan,

I have moved this thread over to the Linux forum in hopes that it will get a faster response there.

Dave

Jonathan

Can you help me and let me know the secret of getting your code running.  I am trying to get the exact same thing working and have not had any luck.  Unfortunately, I am not a DSP expert but come from the ARM side of things so I am not up on all of the tricks of XDC, SysBios, etc.

Thansk

so what do you want your application to be doing?

I would be happy if I could send a message from Linux to the Sys/Bios program on Core1 that will start/stop a LED blinking.  Anything simple would be nice.

Thanks! 

that sounds simple, but can be pretty complicated.

What i would like to know is, did you already try out starting and stopping a LED blinking in SYS/BIOS?

For the communication between linux and sys/bios i would suggest using the Notfiy function.

Did you already try out the notify example that is available in Code Composer Studio?

This one is available under File->New->CCS project
Select C6000 familiy, Generic Devices and Generic C66xx Device.
Projects -> IPC and I/O Examples ->C6678 Examples -> C6678 Notify (single image for all cores).

Try this example out under Sys/Bios and when you got that running for just 2 cores (i can tell you how, but it's easy to do this yourself),
you can check out the syslink examples in the c6x-linux project. Maybe when you got that far, let me know and I'll share some code with you
that I wrote to make things easier.

Jonathan

Thanks.  I already have the sys/bios examples working, including the multicore ones.  I have no problem following the examples for sys/bios only or even for the linux c6x examples.  My problem is that there are no examples for what I need to do which is develop the main thread on the linux core (e.g core 0) and then start a worker thread on core 1.

Let me ask you a tiny specific question.  When I build, I am getting an error that says my module cannot start because the address is not on the correct boundary and I don't have a reset vector.  What project settings do you use to set the start address and/or add a reset vector.  There are mentions of this on E2E, but nothing I have found that works.

Thansk

Here is an example of a very simple SYS/BIOS program that works with syslink.
 The only thing it does is, it received events from the server at EVENT_ID = 21 and
 afterwards it calls an event back to the server at EVENT_ID = 10.

 You should compile this using CCS, just make an example hello world application
 and replace the c and cfg code with the code that is attached.
Don't forget to include the core config in the same directory as the c and cfg code ;)

Thanks.  I will try this code right now.  I looked over the code and there are several things that I have not seen before, so (I am hoping) that one of them will be what I have been missing.  I really appreciate the help and will let you know the results shortly.

Jonathan

I think that you have helped me find where I am going wrong.  But I am not quit there yet.  When I build your code I get the following error:

can't locate the package 'ti.syslink.ipc.rtos' along the path:    (I edited out the rest of the error message path string)

I am building on the PC, so I thought this may be a PC/Linux thing, so I moved over to my Linux machine to build which took me a little while.  No help there as I got the exact same error.

I have the C6x build running on my Linux box and it has a syslink folder.  However, it does not contain the expected "packages" folders, etc.  Otherwise I would have tried to use that package to see what would happen.

So, I am thinking that there is some package somewhere that I need to download/install.  However, I cannot seem to locate it.  So, can you point me to where you got your ti.syslink.ipc.rtos package?  I assume I am looking for something like a "syslink" package.  Perhaps I am searching for the wrong thing.  This is one of those cases where you need to know what to look for before you can find it.

FYI, I have tried loading the following packages and none helped.

DSPLIB

IPC  (Inter-Processor Communication)

MCSCK

MCSDK PDK

NDK

OpenMP

SysBIOS

XDAIS

David,

assuming you already build the c6x-linux environment, you can include the ./Build/syslink_evmc6678.el_hardfp directory. 

This indeed does not contain a package directory, but it also doesn't have to. It will include the stuff you need to build the application.

I hope you will succeed building the application!

Let me know how it went 

Jonathan -

Much progress!  I can now get the program to load and see the message tells me that the program is running.  However, I do not see any of the System_printf statements on the serial port output.  Do you see these prints when you run your setup?   I have insmod'ed syslink.ko so that is not the problem.  Is there something else that I need to do see the printfs?  

Thank you for all your support.  I am not sure that I could have done it w/o your help.  I NEVER would have thought of adding the syslink folder to the include paths and it turns out that was pretty much the trick that did it.  I can't say it enough.  Thanks!

Jonathan

I should add...if I connect with CCS then I do see the printouts on CCS.  But I thought I should be seeing the printouts on the serial port along with the Linux messages.  Perhaps I am in error here, but I did want to confirm that you were seeing the same.

Thanks again for everything.

This is expected behaviour. I have also no output on the UART, only in CCS.
There is a way to get output on your UART, but I don't know how. You can maybe search
through the forum or open a new thread for this, possibly in the BIOS forum.

Good luck and I'm glad I could help!

Jonathan

Thanks again.  You have been a great help.  TI should be glad that they have you on their staff.  Thanks again.

Hi David,

Thanks for the compliment. However, I do not work for TI :p
I am experimenting with the board, just as you. I have been going through all
the steps that you have been going through, and since I have been doing this for the last
few weeks, it was my idea that I could give you little hints on how to go through them as well ;)

Oooh.  In that case, I am especially thankful since this wasn't in your job description.  

For those that come after us, I hope that the TI guys take your example and  put the instructions into a web page as an example.  As I said earlier the trick of adding the c6x-linux syslink folder to the CCS project path was entirely unexpected.  That hint from you is what got me going.  One example and I would have been up and running a week ago.

I wish you the best...