iPXE wasn't compiled.

[mcb30]

(2016-01-28 07:32)HoRangKi Wrote:  [Problem Call Stack]
main() => initialise() => initialise() return !! => startup() => core/devices.c : probe_devices() => PCI probe call => pcibus_probe() => ath9k_init_device() => ath_rx_init() => ath_rxbuf_alloc() => infinite reboot

Thanks for tracking that down. ath_rxbuf_alloc() was very broken. I've pushed a change to fix this one small part of the driver: http://git.ipxe.org/ipxe.git/commitdiff/d0bfd83.

If we find any more bugs of this magnitude, then I'll just remove the whole ath9k driver.

Michael