Hi ,
I'm working on a Moxa UC7420 and started porting of U-Boot about 2 weeks ago. That is what I've done:
* Creating a new board by cloning some very similiar board with IXP42x. The config also defines a big and useful default env with _all_ stuff preset. * Adjusted the PHY addresses. Thanks to Stefan for pointing me to the MII scanner in U-Boot. That made it _very_ easy. * Downloading the missing NPE microcode from Intel.... (see below) * Disabled all NPE microcode blocks, which are not required. Saved lots of space. Microcode is still linked into U-Boot, but I will move it to some spare flash sector soon (again, all information about the issue is only in the source code)
There are still issues with the (broken?) PCI bus on my target, but network and downloading stuff is now working. Most times at least...
YOU HAVE TO USE MICROCODE VERSION 2.0!!!
?? I used the latest 2.4 micro code. Both NIC interfaces seem to work, but there seems to be a 'stall' and checksum problem with tftp transfers.
Are there stalls/hangs with 2.0 microcode? Is this problem known? Somebody working on this issue?
Otherwise I think, that we should collect all our experiences with the IXP4xx CPUs and how-to compile U-Boot. It took most of my time to find the shattered pieces of information :-) Please add a dedicated ReadMe file to the master branch somewhere, and I will add a 'walk through guide'. When others do so as well, this document could help with most of the probs.
Regards Carsten
____________ Virus checked by G DATA AntiVirusKit Version: AVK 17.5383 from 14.06.2007
____________ Virus checked by G DATA AntiVirus Version: AVK 17.5383 from 14.06.2007 Virus news: www.antiviruslab.com