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n2100/redboot/tftp timeouts



Hi folks,

I finally got a serial console soldered on :) So now I try
to use redboot's tftp to yank a kernel across the network.

	RedBoot> load -r ramdisk.arm -b 0x00800000
	Using default protocol (TFTP)
	timeout

I cannot get the poor thing to grab kernels/ramdisks. I've
tried two hosts for the tftpd server, and two tftpds on one
host (atftpd and tftpd-hpa). I've also tried specifying the
local IP in redboot so the packet src wasn't 0.0.0.0.

I can tftpd between other hosts fine, so it isn't
paths/permissions. wireshark shows the packets hitting the
interface, but no attempt is made at responding. Is
something throwing away the packets before they reach
userland? It's not a firewall, maybe the IP stack's spoof
protection?

I notice the dest MAC is set as being the same as the
source. Attached is a wireshark dump of two packets; there
were no replies.

	RedBoot> version

	RedBoot(tm) bootstrap and debug environment [ROM]
	Red Hat certified release, version 1.93 - built
	19:55:20, Aug  8 2006

	Platform: THECUS N2100 (IOP80219) Copyright (C)
	2000, 2001, 2002, Red Hat, Inc.

	RAM: 0x00000000-0x20000000, 0x0004b648-0x1ffd1000
	available, total: 512 MB FLASH: 0xf0000000 -
	0xf1000000, 128 blocks of 0x00020000 bytes each.


-- 
Jon Dowland

Attachment: tftp
Description: Binary data


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