AM5748: How to debug the SMP between A15 cores

N Anila

Part Number: AM5748
Other Parts Discussed in Thread: SYSBIOS,

Hello,

We are trying to implement SMP mode between the two A15 cores by giving the affinity as 0 and 1 for the tasks indicating that the tasks should run in the respective core.We included SMP mode in the cfg file by adding the lines

var SysMin = xdc.useModule('ti.sysbios.smp.SysMin');
SysMin.bufSize = 0x1000;
SysMin.flushAtExit = false;

var System = xdc.useModule('xdc.runtime.System');
System.SupportProxy = SysMin;

BIOS.smpEnabled = true;
var Core = xdc.useModule('ti.sysbios.family.arm.a15.smp.Core');
Core.numCores = 2;

We are trying to find out the task running in the specific core.Can anyone suggest any method to indicate that the task in running in the respective core and how to get to know that SMP mode is working.

Thanks,

Anila

1 month ago

0 Josue Zamitiz-Ayala 1 month ago

TI__Genius 11078 points

Hello Anila,

Please see the following thread for additional guidance: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/678860/rtos-am5726-smp-support

See the Slides here: 2335.Public_SmpBiosSlides.pdf

Please let me know if this helps answer your question.

Best,

Josue

0 N Anila 13 days ago in reply to Josue Zamitiz-Ayala

Prodigy 80 points

Hi,

We tried to implement SMP module for A15_0 and A15_1 of AM5748 processor and we are getting prints such that tasks are running based on the affinity.We implemented it using the JTAG by giving the Sync Group Cores.How is it possible to run the same code using SD card,is it possible to implement it using SD card.

Thanks,

Anila

0 Josue Zamitiz-Ayala 13 days ago in reply to N Anila

TI__Genius 11078 points

Hello Anila,

I am happy to hear that you were able to get this to work. Please mark the question as resolved if it helped you resolve it.

Also, be wary that SMP processing is no longer supported by TI so support is very limited.

I believe creating the AppImage would follow the same flow as denoted in the SDK Documentation:

https://software-dl.ti.com/processor-sdk-rtos/esd/AM57X/08_01_00_09/exports/docs/rtos/index_Foundational_Components.html#id68

Best,

Josue

0 N Anila 12 days ago in reply to Josue Zamitiz-Ayala

Prodigy 80 points

Hi Jouse,

The doubt i have is,can SMP mode between A15_0 and A15_1 be implemented by using SD card without the usage of jtag

Thanks,

Anila

0 Josue Zamitiz-Ayala 12 days ago in reply to N Anila

TI__Genius 11078 points

Anila,

Based on the reviewing the slides provided above, the lack of specific instruction for creating a bootable SD card leads me to believe there is no special step in creating the SD card other than including the elf files and adding them in the correct order.

My suggestion is to follow the regular SD creation flow and test.

The Sync Groups option for CCS is just part of the tool to help debug the SMP feature, not a necessity for the SW to run.

-Josue

Processors

Processors forum

AM5748: How to debug the SMP between A15 cores