Boot STM32MP257f-ev1 from cortex M33

[Ishan_Padaliya]

Dear ST Community,

We are working with the STM32MP257F-EV1 evaluation board and using the Yocto Distribution Package for our software stack.

Our intended boot sequence is:

1. Boot starts from the Cortex-M33 core.

2. The M33 firmware is responsible for triggering the boot of the Cortex-A35 core.

We would like to confirm:

• Is this boot flow supported on the STM32MP25x platform?

• If yes, could you please share the recommended procedure or reference steps to implement this?

Any guidance or official documentation links would be greatly appreciated.

Thanks and Regards,
Ishan