The other day I saw that Target was selling the D-LINK DIR-615 draft N router for $50.00 each. Since it had been a while since I purchased a wireless router to hack, I bought one. It turns out that this was a wise choice.
This router chip has an 88F5180NB1 CPU. This is a Marvell Orion SoC. Support for this family of processors is coming into the tree shortly.
There's a FS28F640 flash chip on board. This is a 64Mb/8MB of memory. With compression, FreeBSD can fit into this size. There appears to be 32MB of RAM, which is also enough to run FreeBSD.
There's a 88E6061-LAJ1 PHY chip which should be relatively easy to program.
Finally, it has a mini-pci slot with a 802.11n card based on the 88W8361P-BEM1 chip. Maybe a driver for this chip will come along. I've not investigated the GPL tarball to see if there's a driver in source for this, or just a binary module.
There's a GPL tarball available at the D-Link web site.
Finally, there's two interesting connectors. One looks to be a JTAG connector, the other looks to be a serial port.
My next step is to look into what's coming out of the serial port and what's in the GPL tarball for hints while I'm waiting for the Orion support to come into the tree.