Aha! Jump into #freebsd on IRC (on efnet, don't ask) and poke me (adri) and/or ask for help.

If it's the same SoC in a different box, then it isn't too hard:

* Attach serial console, boot to uboot. If you're using a d-link then you likely can't without some hardware hacking (and even then they sometimes disable serial RX in u-boot. Grr.) If you're using tp-link then you mash 'tpl' at the console whilst uboot is counting down from 1 second -> 0 seconds to drop into the prompt. * Chances are an existing kernel will boot - you can test using tftpboot and go. So, build an existing image, grab kernel.BLAH from ../tftpboot/, put it somewhere tftp'able, and:

uboot> setenv ipaddr ip-for-AP uboot> setenv serverip ip-of-server uboot> tftpboot 0x80050000 kernel.BLAH uboot> go 0x80050100

Some uboots don't have 'go', only 'bootm'. In that case you can grab the kernel.BLAH.lzma.uboot file - it's a compressed u-boot application. You have to ensure you load it /above/ where FreeBSD boots from, as uboot will decompress it for you into the right spot (here it's loaded into 0x80050000.) I typically put it 16MB above (and thus assume you have at least 32MB RAM):

uboot> tftpboot 0x81050000 kernel.BLAH.lzma.uboot uboot> bootm 0x81050000

It should decompress the kernel and start running. If it's the same SoC, then it should boot.

There are a few things you'll need for the board, which typically you lift from the openwrt board config files :) :

* The ethernet setup (what mode each port is in, PLL setups, etc) * the ethernet switch setup (which switch, internal/external, whether ports are hooked up pass-through or to the switch itself, the port config, LED config, etc.) * The atheros onboard wifi and where in flash the calibration data is. * The MAC addresses - where in flash are they. * if there's PCI/PCIe devices, where that is and where in flash the calibration data is * What the GPIO setup looks like. * If there's any custom required GPIO hacks - like say, "wifi RX LNA on gpio X", "enable the serial UART GPIOs explicitly", etc.

That part will take a little more to describe. Maybe I should also write a blog post/wiki article about it. But if you get it to the point of tftpboot'ing on a new piece of hardware then I'll absolutely help you with the rest on IRC and we can write it up.

If it's a different SoC - that's a different article. I have support up to the QCA955x - I think I have two or three more newer SoCs and ethernet switches to write support for, and some more wifi support to port from their reference driver. If you really want to do /this/ part then I'll write that up separately. :)