I am trying to use tftp for update images on my BBB. For that I read tftp tutorials http://processors.wiki.ti.com/index....l_using_U-Boot

It says that I have to connect one ethernet cable from host pc to BBB, and then use

/sbin/ifconfig

to get the IP of the host. But I have only one ethernet port on PC that is connected to internet via LAN. If I remove internet connection and connect other end of cable to BBB I see this

eth0 Link encap:Ethernet HWaddr b8:97:5a:bf:d7:79
inet6 addr: fe80::ba97:5aff:febf:d779/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5637926 errors:0 dropped:0 overruns:0 frame:0
TX packets:3011756 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8323844259 (8.3 GB) TX bytes:205728188 (205.7 MB)

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:27842 errors:0 dropped:0 overruns:0 frame:0
TX packets:27842 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2756628 (2.7 MB) TX bytes:2756628 (2.7 MB)

So there is no IP address shown. How then I can get server IP?

Hi there,

You have two options here as far as I can see, namely:

1. If you have a free Ethernet port on your LAN switch/router, you can connect the BBB to that instead of connecting it directly to your server. Presumably there is already a DHCP server on the LAN too, which also means you don't need to configure an IP in U-Boot manually.

2. If you do want to use a direct connection like you mentioned above, you will need to assign an IP address to your Ethernet adapter manually. Something like this should do the trick:

Good luck!

I took the second option. Kept a uImage in /tftpboot folder and in uBoot Did this
>setenv autoload no
>setenv ipaddr 192.168.1.4
>setenv serverip 192.168.42.1
>setenv bootfile uImage
>tftp

it showed T T T T T T T T for some time and then said timeout.

Hi,

The client and server don't seem to be in the same subnet, so they can't talk to each other without a router. Try changing the server's IP from 192.168.42.1 to 192.168.1.1 (in both the "sudo ip .." command and in "setenv serverip".

I will write what ever I am doing.
I have kept uImage in /tftpboot directory, one gtkterm window where I am stopping uboot. I have a terminal on host opened where I am setting this command
sudo ip address add 192.168.1.1/24 dev eth0

Then boot the BBB, stop uboot
>setenv autoload no
>setenv ipaddr 192.168.1.4
>setenv serverip 192.168.1.1
>setenv bootfile uImage
>tftp

do I have to first send uImage from host, or I can just run tftp on uboot and it will fetch the uImage from uImage?


Now one thing I observed is that the network connection on my host is constantly getting diconnected. If it is not connected that means BBB is not connected to PC via ethernet?

http://imgur.com/d0ZFZxE
shared my desktop screenshot.

I tried the first method and it works.
Thanks.