From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp3.aruba.it (smtpd3.aruba.it [62.149.128.208]) by ozlabs.org (Postfix) with SMTP id DE0B7DDE07 for ; Thu, 11 Jan 2007 01:26:08 +1100 (EST) Subject: Ethernet fails on MPC5200 based target From: Andrea Galbusera To: linuxppc-embedded@ozlabs.org Content-Type: text/plain Date: Wed, 10 Jan 2007 15:26:52 +0100 Message-Id: <1168439212.5271.70.camel@localhost.localdomain> Mime-Version: 1.0 List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hi all, I have a problem with ethernet on my MPC5200 based board. Ethernet is failing on my target with both 2.6.16.11-rt18 from Freescale BSP (based on the ltib tool) and 2.6.16-rc1-g7cdaf877 from Sylvain Munaut's git tree. On the opposite, it works fine with a relatively old (April 2006) 2.6.16 from Denx. What I see is that network is not working (corruption occur). I use a ramdisk rootfs to boot and I get an up-and-running system. Then, if I ping it from a remote host I get the following errors: > ping 192.168.0.183 > PING 192.168.0.183 (192.168.0.183) 56(84) bytes of data. > 64 bytes from 192.168.0.183: icmp_seq=1 ttl=64 time=8.00 ms > 64 bytes from 192.168.0.183: icmp_seq=2 ttl=64 time=0.188 ms > wrong data byte #20 should be 0x14 but was 0xc0 > #8 8 9 a b c d e f 10 11 12 13 c0 15 16 17 18 19 1a 1b 1c 1d 1e > 1f 20 21 22 23 24 25 26 27 > #40 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 > 64 bytes from 192.168.0.183: icmp_seq=3 ttl=64 time=0.217 ms > 64 bytes from 192.168.0.183: icmp_seq=5 ttl=64 time=0.216 ms > wrong data byte #20 should be 0x14 but was 0x0 > #8 8 9 a b c d e f 10 11 12 13 0 15 16 17 18 19 1a 1b 1c 1d 1e 1f > 20 21 22 23 24 25 26 27 > #40 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 > 64 bytes from 192.168.0.183: icmp_seq=6 ttl=64 time=0.187 ms Since my target is heavily based on the Lite5200 I tryed all three kernels on the Lite5200 too and they all show working ethernet. This may suggest something related with the different phy hardware, but consider that the kernel from Denx works fine on it! My target hardware uses MPC5200B CPU and AMD NetPhy AM79C874 for the network phy. Can you suggest what source file may be responsible for this behaviour in order to dig the trees and maybe, hopefully, fix the problem? I tryed a first diffing between the Denx and the Freescale trees (this last one being mostly based on Sylvain's patches) but I can't figure out any reasonable answer. Consider I can't unfortunately switch to 2.6.16 from Denx because it does not support ATA/IDE that I need; also switching to the new powerpc architecture is not an option at moment, since it would require changes to the system at whole. TIA and let me know if you need more details -- Andrea Galbusera