I'm working with a Zynq Ultrascale+ MPSoC SOM + Carrier board Petalinux system. I am able to mount an NFS directory from my Host machine onto my Zynq Ultrascale+ Target.
I have not been successful in NFS booting from this directory.
NFS MOUNT (IS WORKING)
My Host machine is a Ubuntu 18.04 system and I have followed instructions at https://help.ubuntu.com/community/SettingUpNFSHowTo to configure the NFS server as follows :
// kernel server package
- $ sudo apt-get update
- $ sudo apt-get install nfs-kernel-server
- $ mkdir <NFS_SHARE_ROOT>/NFSshare
- // create export directories
- $ sudo mkdir -p /export/users
- $ sudo chmod -R 777 /export/users
// bind mount NFS share directory
- $ sudo mount --bind <NFS_SHARE_ROOT>/NFSshare /export/users
// also place in fstab
// add this line
- <NFS_SHARE_ROOT>/NFSshare /export/users none bind 0 0
// export directories
/export *(rw,fsid=0,insecure,no_subtree_check,async)
/export/users *(rw,sync,insecure,no_root_squash,no_subtree_check)
On my target, I power the system into uboot, set my host machines IP address, and tftp load FIT image.ub and FPGA system.bit from my host.
// client side
// power on board into uboot
- uboot> setenv serverip <SERVER_IP>
// tftp boot the image.ub and system.bit
After the kernel boots, I set the Targets IP address and mount the Hosts NFS directory.
// mount NFS server directory
- client# ifconfig eth0 <TARGET_IP>
- client# mkdir -p /home/root/nfs_share
- client# mount -t nfs <SERVER_IP>:/users /home/root/nfs_share
At this point the target has read access (from /home/root/nfs_share) to the Hosts NFS mounted directory.
NFS BOOT (NOT WORKING)
I have not been able to get the boot from NFS working. Below are the steps I have taken to attempt the NFS boot.
// follow instructions in ug1144 building the target image for boot from NFS directory
Image Packaging Configuration ---> Root filesystem type --->.
Select NFS as the RootFS type.
Select Location of NFS root directory and set it to <NFS_SHARE_ROOT>/NFSshare
- $ petalinux-config -c kernel
Networking support -> IP: kernel level configuration
-IP:DHCP support
-IP:BOOTP support
-IP:RARP support
File systems -> Network file systems -> Root file systems on NFS
// results in NFS_BOOT_IMAGE (image.ub)
// populate NFS directory with rootfs
- $ cd <NFS_SHARE_ROOT>/NFSshare
- $ sudo pax -r -c <PL_PROJECT_DIR>/images/linux/rootfs.cpio
// reboot to uboot
// tftp boot target using the NFS_BOOT_IMAGE built for NFS booting (above)
- uboot> setevn severip <SERVER_IP>
- uboot> setenv bootargs 'console=ttyPS0,115200n8 ip=dhcp root=/dev/nfs rootfstype=nfs nfsroot=192.168.1.58:/export/users,port=2049,tcp rw loglevel=8 nfsrootdebug'
- uboot> boot
The kernel tftp loads and get hung at :
9.417500] IP-Config: Got DHCP answer from 192.168.1.1, my address is 192.168.1.51
[ 9.425150] IP-Config: Complete:
[ 9.428377] device=eth0, hwaddr=00:01:02:03:04:05, ipaddr=192.168.1.51, mask=255.255.255.0, gw=192.168.1.1
[ 9.438452] host=192.168.1.51, domain=, nis-domain=(none)
[ 9.444275] bootserver=0.0.0.0, rootserver=0.0.0.0, rootpath= nameserver0=192.168.1.1
[ 9.453826] macb ff0e0000.ethernet: gem-ptp-timer ptp clock unregistered.
[ 9.461478] ALSA device list:
[ 9.464444] #0: DisplayPort monitor
Q: Do any of the steps above for Host NFS boot server configuration, Petalinux kernel build, or Target uboot configuration look incorrect?
Thanks for any tips.
