How to share code among cores

Nick Borton

I posted this in the Multicore forum, and it didn't get much traction, so I am re-posting here.

I'm looking for a "how to" on how to share common code run on all cores of a multicore C64x+ or C66 DSP. For example, how to have BIOS code resident in shared memory, which all cores link to, and don't replicate, and have all fast application code resident in L1P? In one of the app notes the -r linker directive is mentioned, but how does that process work in with the XDC build process?

link to old thread: http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/439/t/138828.aspx

Thanks!

over 14 years ago

0 Steven Connell over 14 years ago

TI__Mastermind 45025 points

I think you are using SYS/BIOS 6.x, right?

I think what you are looking for is our IPC product (Inter-Processor Communication). This is software that supports running BIOS on a multi core system.

Please find it here:

http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/ipc/index.html

Thanks,

Steve

0 Nick Borton over 14 years ago in reply to Steven Connell

Genius 3595 points

No, communications is not what I am trying to solve. I am trying to limit the footprint of code across the 6 cores in my 6472 by having them run shared code (such as BIOS) out of one location. Each of the 6 cores is running a unique application. Each one also has BIOS, and other common library code linked into it's binary. How can I keep BIOS from consuming LL2 space on each core by having the code reside on SL2 and each core's binary link to it properly.

Is that explanation clearer in terms of what I wish to accomplish?

Thanks

0 Steven Connell over 14 years ago in reply to Nick Borton

TI__Mastermind 45025 points

If you are using BIOS 5.x, then there is some information about this:

http://processors.wiki.ti.com/index.php/Using_DSP/BIOS_on_Multi-Core_DSP_Devices

However, this is not currently supported in SYS/BIOS 6.x. So, if that's what you are using, then you can try to do something similar, but section names are totally different in SYS/BIOS 6 when compared to DSP/BIOS 5.

Steve

0 Nick Borton over 14 years ago in reply to Steven Connell

Genius 3595 points

I am using BIOS 6. Are there any plans to support this?

0 Steven Connell over 14 years ago in reply to Nick Borton

TI__Mastermind 45025 points

Unfortunately, there are no current plans to support this.

Steve

0 Alagusundaram Babu over 13 years ago in reply to Steven Connell

Prodigy 20 points

We are also looking for the same support. Kindly let us know whether this support available now in Sys/BIOS v6.x

Processors

Processors forum

How to share code among cores