iPXE and USB-C

[NiKiZe]

The NII driver which it tries to use is the driver that the MAC/PC firmware provides, something seems to be wrong in the driver interface that comes from firmware. Can you actually do "internet boot" of the mac with any of those usb devices?

It might also be worth comparing the output to the machine that works with the same usb device. ( None of the outputs seem to be successful, i have a hard time following what is what in those logs )

If you can't internet boot the machine with any of the NICs then it won't be able to boot via ipxe.efi eighter, and you will need to have a ipxe version that supports the nic directly.

Build with only basic USB NIC device support:
make bin-x86_64-efi/ecm--ncm.efi DEBUG=xhci

now to know which driver we want (if any exist at all) we will want to have the lsusb output for each of the USB devices that you are trying to get working.