Hi Piyush,

Piyush Shah wrote:

Hi all, Is it feasible to send u-boot commands via Ethernet instead of UART? I know that there is no such support right now. But can it be added? Moreover how am I supposed to transmit UDP or TCP packets from u-boot?

Look into netconsole for control over Ethernet. I haven't used it personally, but it's supported in U-boot.

What kind of UDP or TCP packets do you want to send? Many of the common UDP-based protocols have some support (NFS, TFTP and some others), but keep in mind that U-boot is not a multitasking environment and so there is no concept of 'servers'. Apart from netconsole, all network communications must start from the target.

regards, Ben

Dear Piyush Shah,

In message ad27f3010901290022l2957affex8256b7f34b1190e6@mail.gmail.com you wrote:

Is it feasible to send u-boot commands via Ethernet instead of UART?

yes it it.

I know that there is no such support right now. But can it be added?

You are wrong. The support is right there, and has been there for a long, long time.

Moreover how am I supposed to transmit UDP or TCP packets from u-boot?

UDP only. There is no TCP capable stack in U-Boot.

Best regards,

Wolfgang Denk