Does c6run support COFF format in DM8168 ezsdk?

Eric Wang

Other Parts Discussed in Thread: OMAP3530

Hi all,

I got a aer-aec c674x dsp library from TI (http://focus.ti.com/docs/toolsw/folders/print/telecomlib.html#supportandcommunity), and I try to use c6runlib to build a arm-size callable aec dsp library.

After trying, I got a "undefined symbol" error due to the aer-aec c674x dsp library is COFF format. Then I try to modify the cl6x compiler flag without "--abi=eabi" in c6run_0_97_03_03/platforms/TI816x/platform.mak, and compile it again, it occurs some errors as follows:

error #10016-D: --retain=*(xdc.meta) not supported when producing TI-COFF
   output files
error #10016-D: --dynamic=exe not supported when producing TI-COFF output
   files
error #10016-D: --retain=*(xdc.meta) not supported when producing TI-COFF
   output files
fatal error #10011: cannot continue with specified options; aborting

Does c6run support COFF format in DM8168 ezsdk_5_01_01_80?

Thank You!

over 14 years ago

0 Joern over 14 years ago

Genius 3055 points

Did you download that library via telecomlib, there GetSoftware - and so from this downloads list?

I would assume (not yet checked), that the version for C674x already comes pre-compiled as ELF. But if actually not - as far as the sources are included it should be no problem to build them into ELF format, else I think TI would provide the fitting library format on request.

I assume this because for me it seems as if TI for the C674x generally switched from COFF to ELF, see these Chris Ring's comment about COFF/ELF here and also his answer within that thread.

I think for DM8168 you will have to switch to the ELF format also concerning the DSP's side and so concerning what is run by c6run.

Regards,
Joern.

0 Eric Wang over 14 years ago in reply to Joern

Prodigy 150 points

Hi Joern,

The current release of AER for C674x is COFF version. And from http://e2e.ti.com/support/embedded/f/356/p/122275/437228.aspx#437228, Bogdan says that the ELF version AER release will happen in Q4. From your replying, it seems that only ELF format is planned to be supported on DM816x, C6A816x sdk. If so, the only thing I can do no is waiting for the AER ELF version release.

Thank You.

0 Daniel Allred over 14 years ago in reply to Eric Wang

TI__Genius 17355 points

Eric,

There is an experimental platform definition here: https://gforge.ti.com/gf/project/dspeasy/scmsvn/?action=browse&path=%2Ftrunk%2Fplatforms%2FTI816x_coff%2F

The key is that the loader type is built into the SysLink kernel module, so you will have to rebuild that and make sure that is the one used on the target.

Note that this target has only been tested once, and I can't guarantee it will function completely correctly (that's why it is not included in the packaged release).

Regards, Daniel

0 Eric Wang over 14 years ago in reply to Daniel Allred

Prodigy 150 points

Hi Daniel,

I replaced the files in platforms/TI816x as the files in https://gforge.ti.com/gf/project/dspeasy/scmsvn/?action=browse&path=%2Ftrunk%2Fplatforms%2FTI816x_coff%2F, and rebuilded c6run successfully. But when I tried to run it on DM8168 board, I got the following error:

<< DLOAD >> ERROR: Invalid ELF file target machine.
ProcMgr_load() failed. Status = [0x8485F003]
C6RUN_IPC_create() failed!

I guess that other component of the ezsdk needs to rebuild. But I doubt that whether COFF Format is supported on TI816x sdk due to http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/109603/387428.aspx#387428.

Thank You.

0 Daniel Allred over 14 years ago in reply to Eric Wang

TI__Genius 17355 points

As I mentioned, I would guess this is because the SysLink kernel module needs to be rebuilt. The type of DSP image (COFF or ELF) that it can load is hardcoded at build time. If you select the COFF platform and then use the 'make modules' command in the C6Run package, it should rebuild the SysLink kernel module appropriately.

But, and this is a big but, there are other components in the DM8168 system that rely on SysLink (namely the video subsystem) and they require ELF support. So if you try to switch to COFF support, you will have to modify the system startup scripts so that the other dependent modules don't load (since they won't work with a COFF SysLink kernel module). This is how I did test things once, but given all of the above caveats and constraints, you can see why I consider it experiemental.

The solution to this is fairly simple, but out of my hands - make SysLink have simultaneous support for loading any type of object file.

Regards, Daniel

0 liping Li over 13 years ago in reply to Daniel Allred

Prodigy 10 points

Hi all:

I came accross the same problems with Eric , when I run the projects in OMAP3530 which compliered and linked with C6RUN and gcc ,it said: LOCAL_lpmReset() failed ! Status = [0x80008008] C6RUN_IPC_create() failed!

But the DSP image in my deviceis ELF,Please tell me what should I do?

Processors

Processors forum

Does c6run support COFF format in DM8168 ezsdk?