How should I make writable readonly rootfs using bitbake layer for STM32mp135F?

[stack_shailesh]

I want to make my rootfs writable read only for STM32mp135f processor using https://github.com/marcusfolkesson/meta-readonly-rootfs-overlay/tree/mickledore this layer. Although I am adding this layer into my build process successfully but my rootfs is not becoming overlay type rootfs(means if edit some file in it then changes should not exist after reset). I have used this layer for Renesas processor where this layer incorporate into init script and works properly.

Kindly give some solution !

[stack_shailesh]

Hello ST engineers,

Atleast reply for my query if it is possible to create readonly writable rootfs(st-image-core) using above mentioned layer so that I can update to my client about it.