Zephyr as a bootloader

[aneejosep]

Hello,

I am thinking about using Zephyr itself as a bootloader to the main firmware (a bigger Zephyr). Basically i have two Zephyr images, one as bootloader and the other is the main FW. Reason for doing this is basically my bootloader needs SD card and FatFS support for upgrading FW from bootloader. Is this possible, is it not a good practice?

thanks

[yashi]

Why not? We've done it. If it gets the job done, that’s great. Zephyr integrates with MCUboot, but that’s a story for another time.

[JarmouniA]

Can't you just extend MCUboot Zephyr port?

[aneejosep]

Can't you just extend MCUboot Zephyr port?

What advantage does it have? we need to add SD card and file system support. Doing secureboot in Zephyr is much more easy.