How to boot Kernel using NFS and eth1?

[leopoldogomez]

We are using LTIB for a custom MPC8306 board that supports two eth ports (eth0 and eth1). We only can use eth1

Kernel NFS boot works properly using eth0.

U-Boot works properly using eth0 and eth1.

For changing from eth0 to eth1 what we have done has been the following:

1. We have defined two different networks, one for eth0 and the other one for eth1

2. We have changed the parameter netdev = eth1 for the kernel command line

The console mensages are:

IP-Config: Complete:

     device=eth1, addr=10.10.10.100, mask=255.255.0.0, gw=255.255.255.255,

     host=mpc8306etp, domain=, nis-domain=(none),

     bootserver=10.10.10.30, rootserver=10.10.10.30, rootpath=

Looking up port of RPC 100003/2 on 10.10.10.30

PHY: mdio@e0102120:03 - Link is Up - 100/Full

rpcbind: server 10.10.10.30 not responding, timed out

Root-NFS: Unable to get nfsd port number from server, using default

Looking up port of RPC 100005/1 on 10.10.10.30

NETDEV WATCHDOG: eth1 (ucc_geth): transmit queue 0 timed out

------------[ cut here ]------------

Any help would be appreciated.

[leopoldogomez]

Hello Yiping

The problem remains. Eth1 does not work in Linux

Attached  you will find the linux boot file, the kernel configuration file and the dts file

Best regards,

Leopoldo

[yipingwang]

Hello Leopoldo,

I reviewed your dts file and found a problem, the interrupts number for enet1 should be 34.

ucc@2200 interrupt number is 34.

ucc@3000 interrupt number is 33.

Please refine your dts file and verify whether eth1 can work.

Have a great day,
Yiping

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[leopoldogomez]

Hello Yiping

Following your advice, we refined the dts file. The problem was that UCC2 is ucc@3000 not ucc@2200

Now both eth0 and eth1 are working fine

Thank you for your help

Best regards,

Leopoldo

[yipingwang]

Hello Leopoldo Gomez,

You could use both eth0 and eth1 in u-boot, so there should be no hardware problem.

First please check NFS configuration on the server side, please check whether /etc/exports is configured correctly, for example "/nfsroot  10.192.208.18(rw,no_root_squash,async)", whether the IP is valid, it's better use "/nfsroot  *(rw,no_root_squash,async)", if edit this file, you need to restart NFS daemon.

On the target, please check the bootargs, please refer to the following.

=> setenv bootcmd 'setenv bootargs root=/dev/nfs rw nfsroot=<tftp_serverip>:<nfs_root_path> ip=<board_ipaddress>:<tftp_serverip>:<your_gatewayip>:<your_netmask>:<boardname>:eth1:off console=ttyS0,115200;tftp 1000000 $bootfile;tftp c00000 $fdtfile;bootm 1000000 - c00000'

If you problem remains, please boot up Linux System, and check whether eth1 can work in Linux.

Have a great day,
Yiping

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[leopoldogomez]

Hello Yiping Wang

1) I have booted the Linux System from flash, using eth0 in the kernel command line and checked that eth1 do NOT works in Linux (using pings)

2) In the U-Boot command line eth1 works fine using ping

3) Attached you will find the Kernel configuration file

Best regards,

Leopoldo

[yipingwang]

Hello Leopoldo,

Please make sure that you have customized the dts file correctly, pay attention to "enet1: ethernet@3000" definition, just now I checked mpc8306som.dts file, eth1 Ethernet port is defined as phy-less port, you need to specify the correct phy-handle to it, please refer to eth0 definition.

enet1: ethernet@3000 {

333                        device_type = "network";

334                        compatible = "ucc_geth";

335                        cell-index = <2>;

336                        reg = <0x3000 0x200>;

337                        interrupts = <33>;

338                        interrupt-parent = <&qeic>;

339                        local-mac-address = [ 00 00 00 00 00 00 ];

340                        rx-clock-name = "none";

341                        tx-clock-name = "none";

342                        fixed-link = <1 1 100 0 0>;    #PHY-LESS

343                };

If you problem remains, you could send your dts file and Kernel boot log to me, I will do more investigation for you.

Have a great day,
Yiping

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