I'm thinking of having it emulate a serial port. This is for Linux As Bootloader, the next-generation iPAQ bootloader, and some new iPAQs do not have a serial port, so we need USB support.
What's the serial port used for ... command interpreter? Or downloading files?
One question--why not use CDCEther and g_ether? They are already written and give you all the features of TCP/IP--better than just a serial port.
Networking is not compiled into LAB. Too big.
But network boot protocols (UDP, DHCP, TFTP) were designed to fit into much smaller ROMs than you're working with ... :)
BLOB has a mini-stack; and I've certainly seen it done with standard kernel networking code.
And of course, PXA has enough endpoints that it's possible to eventuall support BOTH models at the same time!
- Dave
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