OpenWrt Wireless - WGR614l

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I would like to port OpenWrt firmware on Netgear wgr614L platform. I have not been able to find any wireless driver for brcm 5354 chipset.
Can anybody please help me out where to find this driver and how to make the wireless interface up and running. Thanks in advance.

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also I have found that the ethernet interface is not getting up automatically. I have not been able to ping the router from a LAN PC. I can ping the router only if I execute the ifconfig command mannually from my board's serial console. any suggestion?