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Use boot0 and boot1 for primary and secondary bootloader

Question asked by Praveen Bharathi on May 28, 2019
Latest reply on May 29, 2019 by Yuri Muhin

On IMX7, that has an eMMC with 2 boot blocks/physical partitions, boot0 and boot1, would it be possible to use one or the other as a redundant bootloader?


I would like to flash primary bootloader on boot0 and secondary bootloader on boot1. Both images are signed and verified by HAB. Verified as in I signed/flashed either images individually and made sure the board boots with either image.


For my use case I would like that if the primary bootloader gets corrupted, the ROM/HAB should validate the secondary bootloader and boot from there. Is this possible?


I have read about the primary and secondary bootloader being flashed on the same boot partition with secondary image table but I really dont want the two bootloader images to reside on the same block. I would like to have it working the way I described above. Please let me know if that is do able?