AM2634: Call Bootloader API from Application image?

Nishka Rao

Intellectual 1496 points

Part Number: AM2634

Hi Team,

Is it possible to use the Bootloader API in non-SBL code?

Are there any considerations that have to be made when doing this?

Thanks!

4 months ago

0 Kier 4 months ago

Mastermind 9520 points

Nishka Rao said:
Is it possible to use the Bootloader API in non-SBL code?

Do you mean can you make calls to Bootloader functions (e.g. Bootloader_uniflashFlashFileSector()) from your application? If so, then yes. Please see my answer here: AM2634-Q1: Accessing the QSPI Flash - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

Nishka Rao said:
Are there any considerations that have to be made when doing this?

The only thing I would highlight is that flashing operations can take in the order of seconds so you need to find a way of allowing the function to complete over this lengthy period. I am using FreeRTOS with Application Idle Hook enabled. I run these lengthy operations from this hook.

0 Nilabh Anand 4 months ago in reply to Kier

TI__Guru 52240 points

Hi Nishka,

My first question here would be what is the purpose behind calling the bootloader API in application code.

To mention broadly Bootloader apis do following:

1. Copy code to and from the flash -> Flash read write APIs can be used as alternative in application

2. Authenticate the application -> There are HSM APIs which can be used alternatively

3. Boot other CPU and self CPU -> I am not sure if this is what customer wants to do? If yes - then does customer want to build tertiary bootloader kind of application?

I would like to better understand why bootloader api calls are needed at application level?