Sitara is not sending bootp request with SYSBOOT[4:0] as 10101 .

RAJNEESH GAUR

Prodigy 80 points

I am using Sitara(AM35xx) based Beagle bone board.

I have configured SYSBOOT pins using SYSBOOT[4:0] as 10101.

I have read the value of SYSBOOT pins upon power-on using SDCard bootup.

The value of control_status register (offset=0x40) is 0x00400315.

Next , I removed SD card(upon power-off).

Then, I restarted Beagle bone board.

Now, when I connect my Linux Laptop to the Beagle bone board using direct cable.

In wireshark window , I dont see any BOOTP request from the target.

Please advise.

over 12 years ago

0 Biser Gatchev-XID over 12 years ago

TI__Guru**** 393215 points

Hi Rajneesh,

I'm not sure this will work with a direct cable connection. Try connecting through a network switch.

Best Regards

Biser

0 RAJNEESH GAUR over 12 years ago in reply to Biser Gatchev-XID

Prodigy 80 points

Hello Biser

I already connected my laptop & target board to an 8 port "fast" ethernet switch.

Now, I could see activity with regard to my laptop packets on wireshark.

Also, I could see LED "on" on ethernet switch for Laptop.

LED is off for target on ethernet switch.

NOTE: no other devices are connected on this switch.

Best Regards

Rajneesh

0 Biser Gatchev-XID over 12 years ago in reply to RAJNEESH GAUR

TI__Guru**** 393215 points

Hi Rajneesh,

You may also find this thread useful: http://e2e.ti.com/support/dsp/sitara_arm174_microprocessors/f/791/p/183759/768248.aspx

Best Regards

Biser

0 peaves over 12 years ago in reply to Biser Gatchev-XID

TI__Guru 62855 points

I would like to clarify something you mentioned in the original forum post.

You mentioned a Sitara (AM35xx) based Beagle bone board, but this can not be correct. The Beagle bone board contains the AM335x device, not AM35xx device.

So we need to confirm if you are using a Beagle bone board with AM335x or another board with AM35xx.

Regards,
Paul

0 RAJNEESH GAUR over 12 years ago in reply to peaves

Prodigy 80 points

Yes.

You are right.

I am sorry for this typo.

I am working on Sitara (AM335x) device.

Regards,

Rajneesh

0 peaves over 12 years ago in reply to RAJNEESH GAUR

TI__Guru 62855 points

The ROM code expects the MII PHY on the BeagleBone to have auto-negotiation enabled by default , but this is not the case due to a signal connection issue.

You need to add a 10 kohm pull-up resistor to pin # 15 of the LAN8710 which will put the PHY into auto-negotiation mode after power is applied.

Regards,
Paul

0 RAJNEESH GAUR over 12 years ago in reply to peaves

Prodigy 80 points

Yes.

It works.

Now, I can receive bootp request from the target board.

Thanks & regards

Rajneesh

Processors

Processors forum

Sitara is not sending bootp request with SYSBOOT[4:0] as 10101 .