AM335x network boot with TFTP issue

oren zvuluni

Intellectual 325 points

Hi All,

I working on my VAR-SOM-AM33 board that based on AM335x.

My host PC OS id Ubuntu 14.04 LTS.

I am trying to boot over Network with TFTP.

I made all the things that in the tutorials, wikis and all the bugs connected to it and i cant find solution.

I think the problem is that the Ethernet interface is not communicating.

I tryed with DHCP and with static IP also and it's didn’t work.

for example, i entered the commands blow:

U-boot# set bootargs 'console=ttyO0,115200n8 root=/dev/nfs nfsroot=192.168.147.110:/export/rootfs,nolock rw ip=dhcp vram=5M'
U-boot# set bootcmd 'run netboot'
U-boot# set bootfile zImage-VAR-SOM-AM33-TESTING
U-boot# set fdtfile 'var-som-am33.dtb'
U-boot# set netargs 'setenv bootargs console=${console} ${optargs} root=/dev/nfs nfsroot=${serverip}:${rootpath},${nfsopts} rw ip=dhcp vram=50M'
U-boot#set rootpath '/home/oren/yocto_varsomam33/rootfs'
U-boot#set serverip '192.168.147.110'
U-boot#saveenv

U-boot# boot

and i get the results:

Booting from network ...
link up on port 0, speed 100, full duplex
link up on port 1, speed 100, full duplex
BOOTP broadcast 1
BOOTP broadcast 2
BOOTP broadcast 3
BOOTP broadcast 4
BOOTP broadcast 5
BOOTP broadcast 6
BOOTP broadcast 7
BOOTP broadcast 8
BOOTP broadcast 9
.....

i tried also to ping like this:

U-boot# ping 192.168.147.136

link up on port 0, speed 100, full duplex

link up on port 1, speed 100, full duplex

*** ERROR: `ipaddr' not set

ping failed; host 192.168.147.136 is not alive

U-Boot# setenv ipaddr 192.168.147.136

U-Boot# ping 192.168.147.136

link up on port 0, speed 100, full duplex

link up on port 1, speed 100, full duplex

Using cpsw device

ping failed; host 192.168.147.136 is not alive

It seems that nothing is going out or in from the Ethernet interface.

The DHCP server is working fine when i am on the board terminal, the board get an address from the server and i can ping the board from my host.

The problem with the ETH is only when i am on U-Boot terminal.
I am on this problem for 2 days without finding any answers.

Please Help.

Thanks a lot,

Oren

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

Hi,

You seem to have two Ethernet interfaces. In Dual EMAC mode they must be connected to different network segments. What Linux version are you using?

0 oren zvuluni over 9 years ago in reply to Biser Gatchev-XID

Intellectual 325 points

Linux version 4.1.6

Thanks,
Oren

0 Biser Gatchev-XID over 9 years ago in reply to oren zvuluni

TI__Guru**** 393215 points

This doesn't seem to be an official TI release. Where did you get this from?

0 oren zvuluni over 9 years ago in reply to Biser Gatchev-XID

Intellectual 325 points

But only one ETH interface is connected when i am trying to boot.
So how can i disable one of them when i am in network booting?

Thanks,

Oren

0 Biser Gatchev-XID over 9 years ago in reply to oren zvuluni

TI__Guru**** 393215 points

See processors.wiki.ti.com/.../Linux_Core_U-Boot_User's_Guide

0 oren zvuluni over 9 years ago in reply to Biser Gatchev-XID

Intellectual 325 points

Biser,

Thanks for your responses.

I read the wiki link that you gave me, but i cant find exactly what to do(i am new in Hardware specifications ...Sorry).

I maybe saw something that is a clue:

Multiple Interfaces

On some boards, for example when we have both a wired interface and USB RNDIS gadget ethernet, it can be desirable to change from the default U-Boot behaviour of cycling over each interface it knows to telling U-Boot to use a single interface. For example, on start you may see lines like:

Net: cpsw, usb_ether

So to ensure that we use usb_ether first issue the following command:

U-Boot # setenv ethact usb_ether




but i have only cpsw:

Net:   <ethaddr> not set. Validating first E-fuse MAC
Found Micrel KSZ9021 PHY
cpsw


What i need to do?
I am seeing that i have only one interface that is cpsw but in the DHCP process there are 2 ports.
What i need to disable..?
 
thnaks a lot,

Oren

0 Biser Gatchev-XID over 9 years ago in reply to oren zvuluni

TI__Guru**** 393215 points

You don't need this then. You need either:

U-Boot # setenv autoload no
U-Boot # dhcp

or:

U-Boot # setenv ipaddr 192.168.1.2
U-Boot # setenv serverip 192.168.1.1
U-Boot # setenv gatewayip 192.168.1.1
U-Boot # setenv netmask 255.255.255.0

0 oren zvuluni over 9 years ago in reply to Biser Gatchev-XID

Intellectual 325 points

I made this two, it's still not working and i get the same result.

This is the DHCP command:

U-Boot# setenv autoload no

U-Boot# dhcp

link up on port 0, speed 100, full duplex

link up on port 1, speed 100, full duplex

BOOTP broadcast 1

BOOTP broadcast 2

BOOTP broadcast 3

BOOTP broadcast 4

BOOTP broadcast 5

BOOTP broadcast 6

BOOTP broadcast 7

BOOTP broadcast 8

BOOTP broadcast 9

BOOTP broadcast 10

I think i need to disable port 1 only for the U-Boot process.

I cant find any U-Boot environment variable that i can set to make it's happen.

I am on the U-Boot source code for few hours but it's the dangerous way and the long one i think...

Oren

0 Biser Gatchev-XID over 9 years ago in reply to oren zvuluni

TI__Guru**** 393215 points

Try setting the network manually.

0 Biser Gatchev-XID over 9 years ago in reply to Biser Gatchev-XID

TI__Guru**** 393215 points

I'm afraid we cannot help more than that. Your U-boot seems to be different from the one used in our SDK.

0 Pavel Botev over 9 years ago in reply to oren zvuluni

TI__Guru**** 170625 points

Oren,

VAR-SOM-AM33 is designed and supported by Variscite:

variwiki.com/index.php

They have special forum for VAR-SOM-AM33 devices. More over they used TI SDK and aplay patches on top of the TI SDK (u-boot/kernel):

variwiki.com/index.php
variwiki.com/index.php

variscite.com/.../index.php

I would suggest you to try first with TI SDK 7 and variscite patches on top. If issue remain, check with their support team.

Regards,
Pavel

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AM335x network boot with TFTP issue