TDA4VM: Questions about RTOS SDK

Additionally,

1. Do you have a boot sequence diagram from DMSC, Linux and RTOS?
2. At the bottom of the Auto Valet Parking demo, there are keywords like DDR BW, VISS, LDC, BLNF, MSC0, MSC1, DOF, SDE, GPU; is there any page describing what they mean?

Thank you.

Hi Olivia Yu,

Olivia Yu said:

Are there any logs for us to confirm that RTOS is running?

Do you mean the vision apps firmwares? Then, You could run vision_apps_init.sh script to know if the firmwares are running fine. 

Olivia Yu said:

Does Linux come first, or RTOS come first?

Please refer to below link for complete boot flow.

https://git.ti.com/gitweb?p=ti-u-boot/ti-u-boot.git;a=blob;f=board/ti/j721e/README;h=615f3c37bd45f1d88748c98fecb47537d2c768da;hb=refs/heads/ti-u-boot-2021.01

Olivia Yu said:

I previously used the prebuilt version to run the demo applications. However, I would need to make modifications to the RTOS image for my use case. Would it be correct to say that I would need to use the non-prebuilt version and run the steps in ./install_to_sd_card manually? Or is there an easier way?

You could have to make changes in the vision apps folder, then rebuild vision_apps using "make sdk" command and copy the updated binaries to the SD card using "make linux_fs_install_sd" command..

Olivia Yu said:

At the bottom of the Auto Valet Parking demo, there are keywords like DDR BW, VISS, LDC, BLNF, MSC0, MSC1, DOF, SDE, GPU; is there any page describing what they mean?

There are actual HW blocks.. Please refer to TRM for more details of this HW blocks.

Regards,

Brijesh

Hi Brijesh, thanks for the reply, I would like to clarify a few points.

Brijesh Jadav said:

Do you mean the vision apps firmwares? Then, You could run vision_apps_init.sh script to know if the firmwares are running fine. 

Does this mean that if the firmwares are running fine, RTOS is running fine?

Brijesh Jadav said:

Please refer to below link for complete boot flow.

https://git.ti.com/gitweb?p=ti-u-boot/ti-u-boot.git;a=blob;f=board/ti/j721e/README;h=615f3c37bd45f1d88748c98fecb47537d2c768da;hb=refs/heads/ti-u-boot-2021.01

May I know where RTOS comes in in this boot flow? In other words, how do I know when TI-RTOS begins running, since it isn't initialised by myself?

Regards,

Olivia

Hi Olivia Yu,

Olivia Yu said:

Does this mean that if the firmwares are running fine, RTOS is running fine?

Yes, if this init script shows echo test passing on all cores, all firmwares are running fine. 

Olivia Yu said:

May I know where RTOS comes in in this boot flow? In other words, how do I know when TI-RTOS begins running, since it isn't initialised by myself?

As shown in the boot flow, once the uboot comes up, it loads the firmware for R5F, C6x and C7x.. RTOS is OS running on these cores, as soon as the firmwares on these cores are loaded and it starts running, RTOS also starts running.. 

Regards,

Brijesh