I am trying to boot the Ubuntu Focal (rockpi4a_ubuntu_focal_server_arm64_20210125_2342-gpt.img) over network (TFTP + NFS) on the rockpi4a 1.4. I’ve followed the article wiki.radxa.com/Rockpi4/dev/u-boot/pxe but It seems there is some problem loading the rootfs from NFS server (see the log below).
- I am able to boot the kernel, but it hangs after disabling uart0 (bootconsole [uart0] disabled)
- I belive that the kernel should mount the root filesystem from NFS server as instructed by the bootargs. this is my pxelinux.cfg/default file:
append earlycon=uart8250,mmio32,0xff1a0000 earlyprintk console=ttyS2,1500000n8 init=/sbin/init netboot=nfs root=/dev/nfs rootfstype=ext4 ip=dhcp nfsroot=192.168.4.9:/mnt/pxe/rootfs,v3 ro rootwait
My NFS server is working, I am able to mount the rootfs from different board (also rockpi4a) in the same network (using command line).
I am really stuck here, could anyone help? Thank you in advance. The serial console log ends with (as a new user, I was not able to post the entire console log):
Starting kernel …
[ 1.899002] bootconsole [uart0] disabled
…nothing happens here - the ‘ss -a|grep nfs’ on the NFS server does not show any new client connections and I haven’t found a way how to find the reason of the malfunction since there are no logs after the kernel disables bootconsole (I’ve googled a lot but without success).