Hi,
just a quick announcement I totally forgot to send out to the probably most relevant places (coreboot + flashrom) about a little hardware project I have finished a while ago: openbiosprog-spi.
It's a USB-based SPI chip flasher hardware based on the FTDI FT2232H chip, all the gory details (including lots of photos) are at:
http://randomprojects.org/wiki/Openbiosprog-spi http://hermann-uwe.de/blog/openbiosprog-spi-a-diy-open-hardware-and-free-sof...
The device is already supported by flashrom out of the box. It has a small DIP-8 socket to allow flashing DIP-8 SPI chips from newer mainboards externally (if they're in a socket). As an alternative you can also solder an 8-pin pin-header instead of the socket in order to connect to a soldered SO-8 chip on a mainboard directly using some wires.
The hardware schematics and layouts were done using the open-source Kicad suite and they're CC-BY-SA 3.0 licensed. All hardware files are available from here:
git clone git://gitorious.org/openbiosprog/openbiosprog-spi.git
Flashrom usage of the device looks like this:
flashrom -p ft2232_spi:type=2232H,port=A -w foo.bin
Have fun, Uwe.
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Uwe Hermann