See below...

-----Original Message----- From: Wolfgang Denk [mailto:wd@denx.de] Sent: Monday, August 30, 2004 2:55 PM To: Brian S. Park Cc: u-boot-users@lists.sourceforge.net Subject: Re: [U-Boot-Users] U-Boot DHCP request does not time out.

In message 6.1.2.0.0.20040830104654.03a57ec0@corelis.com you wrote:

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I have question about U-Boot and its BOOTP/DHCP client capability. We are using it to get the dynamic IP from DHCP server and

it looks like it

...

never times out if the network cable is not connected.

Which processor / board is this? Normally U-Boot will report an error and time out if it cannot send ethernet packets (at least this is what it does on all boards I can test).

I've seen the same problem on the TI OMAP 1510 Innovator and a custom board I've worked with that is similar in architecture.

From the Innovator...

OMAP1510 Innovator # dhcp Using MAC Address 00:0B:36:00:03:FB BOOTP broadcast 1 BOOTP broadcast 2 BOOTP broadcast 3 BOOTP broadcast 4 BOOTP broadcast 5

Retry count exceeded; starting again BOOTP broadcast 6 ... Retry count exceeded; starting again BOOTP broadcast 13 ...

This lasts for at least a minute for sure. This becomes a problem if 'dhcp' never exits when it is used in bootcmd.

-Michael Bendzick