Booting from NFS

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Revision as of 07:10, 1 August 2008

Configure NFS Root

To boot from NFS, add the following entry via serial console: (See Bootloader section on how to access an bootloader):

setenv bootargs_nfs root=/dev/nfs nfsroot=192.168.0.200:/export/openmoko
    ip=192.168.0.202:192.168.0.200:192.168.0.200:255.255.255.0:ezx:usb0:off
    rootdelay=5 console=ttySAC0,115200 console=tty0 loglevel=8

setenv menu_5 Boot from NFS: setenv bootargs \${bootargs_nfs} \${mtdparts} \;
    nand read.e 0x32000000 kernel\; bootm 0x32000000

saveenv


Use Static MAC Addresses

The random MAC addresses generated by the USB Ethernet gadget code caused me some grief on the host side. To generate static addresses, I added the following variable to the menu_5 bootargs:

setenv bootargs_usb g_ether.host_addr=00:1b:11:1b:08:18 g_ether.dev_addr=00:1b:11:1b:08:19


Configure Your Firewall

Another thing to keep in mind is your firewall. I was getting messages like this:

Looking up port of RPC 100003/2 on 192.168.0.200
portmap: server 192.168.0.200 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 192.168.0.200
portmap: server 192.168.0.200 not responding, timed out
Root-NFS: Unable to get mountd port number from server, using default
mount: server 192.168.0.200 not responding, timed out
Root-NFS: Server returned error -5 while mounting /srv/root

After I updated my firewall to pass NFS traffic over the interface to the Neo1973, everything worked smoothly.

Personal tools

Configure NFS Root

To boot from NFS, add the following entry via serial console: (See Bootloader section on how to access an bootloader):

setenv bootargs_nfs root=/dev/nfs nfsroot=192.168.0.200:/export/openmoko
    ip=192.168.0.202:192.168.0.200:192.168.0.200:255.255.255.0:ezx:usb0:off
    rootdelay=5 console=ttySAC0,115200 console=tty0 loglevel=8

setenv menu_5 Boot from NFS: setenv bootargs \${bootargs_nfs} \${mtdparts} \;
    nand read.e 0x32000000 kernel\; bootm 0x32000000

saveenv


Use Static MAC Addresses

The random MAC addresses generated by the USB Ethernet gadget code caused me some grief on the host side. To generate static addresses, I added the following variable to the menu_5 bootargs:

setenv bootargs_usb g_ether.host_addr=00:1b:11:1b:08:18 g_ether.dev_addr=00:1b:11:1b:08:19


Configure Your Firewall

Another thing to keep in mind is your firewall. I was getting messages like this:

Looking up port of RPC 100003/2 on 192.168.0.200
portmap: server 192.168.0.200 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 192.168.0.200
portmap: server 192.168.0.200 not responding, timed out
Root-NFS: Unable to get mountd port number from server, using default
mount: server 192.168.0.200 not responding, timed out
Root-NFS: Server returned error -5 while mounting /srv/root

After I updated my firewall to pass NFS traffic over the interface to the Neo1973, everything worked smoothly.