Unable to boot via usb_ether

[vishnu...@gmail.com]

Hi,

I have been trying to tftp boot uImage.

Here is my setup:
BBB is connected via USB cable to host.

UBoot is configured for usb_ether.

Uboot receives IP from DHCP server and loads uImage.

The kernel starts.

However, the booting does not progress further as (I think) NFS is not getting loaded. 

[    1.553308] omap_i2c 4819c000.i2c: bus 2 rev0.11 at 100 kHz

[    1.560933] hctosys: unable to open rtc device (rtc0)

[    1.583001] net eth0: initializing cpsw version 1.12 (0)

[    1.588374] net eth0: initialized cpsw ale version 1.4

[    1.593624] net eth0: ALE Table size 1024

[    1.600077] net eth0: phy found : id is : 0x7c0f1

[    1.604893] libphy: PHY 4a101000.mdio:01 not found

[    1.609709] net eth0: phy "4a101000.mdio:01" not found on slave 1, err -19

[    1.622369] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready

[   11.622036] Waiting up to 110 more seconds for network.

[   21.622035] Waiting up to 100 more seconds for network.

[   31.622025] Waiting up to 90 more seconds for network.

[   41.622038] Waiting up to 80 more seconds for network.

[   51.622028] Waiting up to 70 more seconds for network.

[   61.622023] Waiting up to 60 more seconds for network.

[   71.622032] Waiting up to 50 more seconds for network.

[   81.622023] Waiting up to 40 more seconds for network.

[   91.622025] Waiting up to 30 more seconds for network.

[   96.002045] random: nonblocking pool is initialized

[  101.622030] Waiting up to 20 more seconds for network.

[  111.622026] Waiting up to 10 more seconds for network.

[  121.622030] Waiting up to 0 more seconds for network.

[  121.642057] Sending DHCP requests ...... timed out!

[  210.072933] IP-Config: Retrying forever (NFS root)...

[  210.078089] net eth0: initializing cpsw version 1.12 (0)

Or is this a limitation of my hardware setup - only using IPoverUSB and no real eth connecting host and BBB. Could you kindly suggest me some debugging methods to fix this issue. Thank you!

Best regards,

Vishnu