AM57x requirements to debug SYS/BIOS application with gdbc6x

Dmitry Sharihin

Other Parts Discussed in Thread: AM5728

Hello,

I try to debug my DSP-side application with gdb, but documentation for "Hosted GDB C66x" seems kinda outdated, so I have a few questions:

1. There's need to compile gdbserverproxy kernel module for Linux (I'm using Yocto Krogoth 2.1.1 Distribution along with latest meta-ti layer), should I also manually enable debugss kernel module (it's missing at all by default in dra7x.dtsi)? Does debugss kernel module conflict with gdbserverproxy?

2. On DSP-side application I've linked gdb server c66x library from sdo-emu git. There's three init functions in the GDB_server.h. What's the difference between them, and which should I choose?

3. What interrupt number should I use for GDB_init* functions? How remote (ARM) side work with this number?

4. Is there any working examples for debug DSP application (without OpenCL framework) with gdb for AM5728?

Thanks

over 8 years ago

0 Raja over 8 years ago

TI__Guru* 81335 points

Moved this thread over Sitara forum. Thank you

0 Mark Garrett over 8 years ago

TI__Intellectual 2010 points

Dmitry,

1. Debugss is not needed to use gdbc6x and shouldn't interfere with gdbserverproxy.

2. You should use GDB_init_server(4) as is done with the opencl montior (see http://git.ti.com/opencl/ti-opencl/blobs/master/monitor_vayu/monitor.c)

3. You should use interrupt 4.

4. There are not any up to date bare metal examples to be used with gdbc6x. However, there is something here that may help you get started: http://git.ti.com/sdo-emu/gdbc6x/blobs/master/gdb_testing/gdb/main.c. Note this is using the older init functions.

Hope this helps.

Thanks,

Mark

Processors

Processors forum

AM57x requirements to debug SYS/BIOS application with gdbc6x