unable to boot arm64 image

Hi

Now I facing boot linux-5.3 arm64 image failed, without any log, just hang here.

Host machine: ubuntu-18.04 with 4.15.0-70-generic kernel
Qemu version: qemu-system-aarch64-version 4.1.0
use command: qemu-system-aarch64 -kernel <IAMGE> -append "console=ttyAMA0" -m 2048M -smp 2 -M virt -cpu cortex-a57 -nographic

could anyone teach me how to debug this?