[U-Boot-Users] Passing IP address to kernel

[U-Boot-Users] Passing IP address to kernel

[JobHunts02 at aol.com]

Should U-Boot be able to pass the board's IP address to the kernel?


Immediately after logging in, I cannot ping.  ifconfig shows the correct 
hardware address that was set in U-Boot, but not the IP address, which was 
similarly set in U-Boot.  Also, many of the statistical fields have garbage data in 
them (see below).  If I then set the IP address, ifconfig returns the IP 
address and the other fields are correct.  Then, I can ping.


Is this the expected behavior?


Thank you.







                                                                              
  

(none) login: root

login[44]: root login  on `ttyS0'

                                                                              
  

# ping 10.174.100.14

PING 10.174.100.14 (10.174.100.14): 56 data bytes

ping: sendto: Network is unreachable

# ifconfig eth0

eth0      Link encap:Ethernet  HWaddr 1A:34:01:9C:69:15

          BROADCAST MULTICAST  MTU:1500  Metric:1

          RX packets:4039443 errors:1743791573 dropped:0 overruns:0 
frame:1156359170

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:4144766653 txqueuelen:1000

          RX bytes:1290872887 (1231.0 MiB)  TX bytes:0 (0.0 iB)

                                                                              
  

# ifconfig eth0 address 10.174.100.211

eth0: OPEN

BD rings initialised, RBASE=3D8160, TBASE=3D8360

# ifconfig eth0

eth0      Link encap:Ethernet  HWaddr 1A:34:01:9C:69:15

          inet addr:10.174.100.211  Bcast:10.255.255.255  Mask:255.0.0.0

          UP BROADCAST MULTICAST  MTU:1500  Metric:1

          RX packets:0 errors:0 dropped:0 overruns:0 frame:0

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:0 (0.0 iB)  TX bytes:0 (0.0 iB)

# ping 10.174.100.14

PING 10.174.100.14 (10.174.100.14): 56 data bytes

64 bytes from 10.174.100.14: icmp_seq=0 ttl=64 time=1.1 ms

64 bytes from 10.174.100.14: icmp_seq=1 ttl=64 time=0.5 ms

64 bytes from 10.174.100.14: icmp_seq=2 ttl=64 time=0.5 ms

64 bytes from 10.174.100.14: icmp_seq=3 ttl=64 time=0.5 ms

64 bytes from 10.174.100.14: icmp_seq=4 ttl=64 time=0.5 ms

64 bytes from 10.174.100.14: icmp_seq=5 ttl=64 time=0.5 ms

64 bytes from 10.174.100.14: icmp_seq=6 ttl=64 time=0.5 ms

64 bytes from 10.174.100.14: icmp_seq=7 ttl=64 time=0.6 ms

64 bytes from 10.174.100.14: icmp_seq=8 ttl=64 time=0.5 ms

                                                                              
  

--- 10.174.100.14 ping statistics ---

9 packets transmitted, 9 packets received, 0% packet loss

round-trip min/avg/max = 0.5/0.5/1.1 ms

                                                                              
  

#

[U-Boot-Users] Passing IP address to kernel

[Wolfgang Denk]

In message <110.49487932.2fac135e@aol.com> you wrote:
> Should U-Boot be able to pass the board's IP address to the kernel?

Yes, of course - as part  of  the  "ip="  boot  argument,  using  the
kernel's IP autoconfiguration meachnism.

> Immediately after logging in, I cannot ping.  ifconfig shows the correct 
> hardware address that was set in U-Boot, but not the IP address, which was 
> similarly set in U-Boot.  Also, many of the statistical fields have garbage data in 
> them (see below).  If I then set the IP address, ifconfig returns the IP 
> address and the other fields are correct.  Then, I can ping.

Unfortunately you don't provide any information about your  hardware,
kernel  configuration(IP  autoconfiguration enabled?) and kernel boot
arguments ("ip=" passed?). Your kernel may be  misconfigured,  and/or
you  may  be  passing  bad  or insufficient boot arguments. Also, the
garbage data in the  ifconfig  output  suggests  that  your  ethernet
driver in Linux is somewhat crappy.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
There's another way to survive.  Mutual trust -- and help.
	-- Kirk, "Day of the Dove", stardate unknown