am243x Boot Loader

Hi Eli Mordel,

Eli Mordel said:

Before I load my program I switch the board on and I see

You have SBL-NULL preprogrammed on the device. This is a go-to process for development.

Eli Mordel said:

How do I prepare and load boot loader and secondary boot loader SBL for it ?

Step 1 :

You need to develop custom flash configuration - https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/latest/exports/docs/api_guide_am243x/CUSTOM_FLASH_SUPPORT_GUIDE.html

Custom Flash configuration FAQ for all the modes - https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1230063/faq-mcu-plus-sdk-am243x-faq-how-to-debug-develop-migrate-the-flash-driver-for-custom-flash-on-non-ti-evm-ospi-xspi

Step 2 :

After your flash is verified, you need to port the uniflash software to program the SBL in the Flash. You can reuse the SBL NULL on custom board for development. However, we would recommend SBL OSPI as the example resonates with more production friendly approach.

To debug an SBL (bootloader in the flash) - https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1119575/faq-mcu-plus-sdk-am243x-how-to-debug-sbl_qspi-for-am263-and-am273-or-sbl_ospi-for-am243-or-an-application-which-is-booted-via-ospi-qspi-boot

I hope this helps.

Best Regards,
Aakash