Replace the existing PXE ROM on BCM5708 network card

[robinsmidsrod]

BCM5708 is using the bnx2 driver, isn't it? Is the network card onboard on your motherboard or a separate network card you put into a PCI slot? If it is onboard then you most likely can't flash the card itself, you'll have to mod and flash the BIOS of your motherboard. This is a tricky thing to get right and you risk bricking your motherboard if you do it wrong (and it doesn't have a simple backup/restore feature). Have you verified that a native iPXE driver works with the card in question? You can verify this by booting iPXE using ipxe.iso or ipxe.usb files. If that works okay then you can continue on your endeavour to burn it into ROM.

I wouldn't recommend burning the bnx2 into a rom at this stage. The driver is known to be too big and has some issues. Hopefully over the summer we'll have a new bnx2 driver available that should be much smaller and robust.