Hi all, I'm unable to receive DHCP packets using qemu-system-arm 1.4.91 with u-boot (commit: 2988eac). Problem occurs on Ubuntu 12.04 (I tried also Debian wheezy and there was no issue). I accidentally discover that adding '-net dump,file=/tmp/dump.pcap' cause that problem disapear, but want to dig it and find out what the root cause is.
I tried to debug issue from u-boot source code perspective and added verbose logging, but can't see anything strange enough: - log with fail - qemu w/o additional dump command - https://gist.github.com/pietrushnic/5561859 - log with pass - qemu w/ addional dump param - https://gist.github.com/pietrushnic/5561866 Difference: - smc_rcv status is always 0 , NetLoop timeouts for failed case - on failed case u-boot receive some packets but not DHCP offer (I positively verified w/ tcpdump that server sent this packet)
I'm trying to narrow down this problem from both (qemu and u-boot) side. Is there anything else what I can do to confirm that this is not u-boot issue ? Maybe someone heard about this kind of problem ?
My network configuration based on: http://toast.djw.org.uk/qemu.html I'm using versatilepb_config compiled with arm-unknown-linux-gnueabi (created using crosstool-NG).
If provided information are insufficient, just let me know.
Regards, pietrushnic