SK-AM62B-P1: About ti-dm

Koji Hirohashi

Intellectual 390 points

Part Number: SK-AM62B-P1

Tool/software:

Hi,

I have some questions about ti-dm in AM62x.

Is it possible to disable load ti-dm.bin? If it is possible, how to disable load?
Abooting, bfter aremetal application can be worked on R5F?
Which ti-dm.bin is DM firmware or baremetal application?

Best Regards,

Koji

11 months ago

0 Tushar Thakur 11 months ago

TI__Mastermind 49618 points

Hello Koji,

Thanks for your query.

Koji Hirohashi said:
Is it possible to disable load ti-dm.bin? If it is possible, how to disable load?

Can you please explain the above statement a little bit? Are you saying that you don't want to have DM integrated in application running on R5F core?

If yes, it is not possible as DM is responsible for all the resource management and power management.

Koji Hirohashi said:
Abooting, bfter aremetal application can be worked on R5F?

You will need to run an RTOS application on R5F with DM integrated to make it work. DM is responsible for all the resource management and power management.

Please refer DEVELOP_AND_DEBUG_DMR5 for details.

Koji Hirohashi said:
Which ti-dm.bin is DM firmware or baremetal application?

There is no separate bin file created for DM image. As the DM firmware requires multiple threads, it requires an RTOS. So any application on DM R5 should start the SCI server on a thread and actual application can be run on a different thread. Refer main.c of any r5fss0-0 example application to see how to implement this.

Hope the above information helps.

Regards,

Tushar

0 Koji Hirohashi 11 months ago in reply to Tushar Thakur

Intellectual 390 points

Hi Tushar,

Thank you for your early response.

Tushar Thakur said:
Can you please explain the above statement a little bit? Are you saying that you don't want to have DM integrated in application running on R5F core?

In following DT, ti-dm firmware binary is defined as "filename":

arch/arm/dts/k3-am625-sk-binman.dtsi

&binman {
        ti-dm {
                filename = "ti-dm.bin";
                blob-ext {
                        filename = "ti-dm/am62xx/ipc_echo_testb_mcu1_0_release_strip.xer5f";
                        optional;
                };
        };

I think that this binary is built by MCU+ SDK, and it seems that this is application for ipc echo test.

I'm confused that I don't know whether this binary is for management or application.

If this is application, I would like to disable load.

If this is for resource and power management, I would like to replace to binary for just only management, not working other function like the echo test.

Best Regards,

Koji

+1 Tushar Thakur 11 months ago in reply to Koji Hirohashi

TI__Mastermind 49618 points

Hi Koji,

Koji Hirohashi said:
think that this binary is built by MCU+ SDK, and it seems that this is application for ipc echo test.

Yes, this is the IPC rpmsg echo example which has DM integrated.

Koji Hirohashi said:
I'm confused that I don't know whether this binary is for management or application.

This binary start the SCI server on a thread(which is DM) and IPC application can be run on a different thread. This binary serves the IPC mechanism as well as does the device management running parallelly on different threads.

Koji Hirohashi said:
If this is application, I would like to disable load.

If this is for resource and power management, I would like to replace to binary for just only management, not working other function like the echo test.

If you don't want IPC example to run on R5F, you can integrate the DM in simple hello world application and load it.

After removing IPC from DM R5 application, you will not be able to do graceful shutdown of the remote cores.

Hope the above clarifies the doubt.

Regards,

Tushar

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SK-AM62B-P1: About ti-dm