I am porting the kernel version 5.4.12 for our SD820 based custom board.
We were using 4.14.89 kernel but we want to bring up the kernel-5.4.12.
I downloaded source code from the below link and the branch is release/qcomlt-5.4-db820c
Root File Systems used was :
initrd.img-4.14.0-qcomlt-arm64 downloaded from
I renamed the below file to initrd.img-5.4.12-qcomlt-arm64
initrd.img-5.4.0-qcomlt-arm64 downloaded from
But no success from both the above rootfs and ended up with the below message at the end while booting.
Please find the link below for the complete boot log from 5.4.12 kernel.
ALERT! /dev/disk/by-partlabel/rootfs does not exist. Dropping to a shell!