Someone helped me with this, thought i'd pass it along:
First, install the mac OS X driver from here:
http://www.ftdichip.com/Drivers/VCP.htmI have only tested on the intel version. Should work on others though, one would think.
It makes you reboot. Lame.
Ok, after the reboot, patch your Info.plist file as follows (make a backup first, just in case):
--- Info.plist.orig 2009-04-07 22:34:29.000000000 -0700
+++ /System/Library/Extensions/FTDIUSBSerialDriver.kext/Contents/Info.plist 2009-04-07 23:03:28.000000000 -0700
@@ -1,5 +1,5 @@
<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
@@ -4341,6 +4341,40 @@
<key>idVendor</key>
<integer>1027</integer>
</dict>
+ <key>SheevaPlug JTAGKey FT2232D A</key>
+ <dict>
+ <key>CFBundleIdentifier</key>
+ <string>com.FTDI.driver.FTDIUSBSerialDriver</string>
+ <key>IOClass</key>
+ <string>FTDIUSBSerialDriver</string>
+ <key>IOProviderClass</key>
+ <string>IOUSBInterface</string>
+ <key>bConfigurationValue</key>
+ <integer>1</integer>
+ <key>bInterfaceNumber</key>
+ <integer>0</integer>
+ <key>idProduct</key>
+ <integer>40591</integer>
+ <key>idVendor</key>
+ <integer>40584</integer>
+ </dict>
+ <key>SheevaPlug JTAGKey FT2232D B</key>
+ <dict>
+ <key>CFBundleIdentifier</key>
+ <string>com.FTDI.driver.FTDIUSBSerialDriver</string>
+ <key>IOClass</key>
+ <string>FTDIUSBSerialDriver</string>
+ <key>IOProviderClass</key>
+ <string>IOUSBInterface</string>
+ <key>bConfigurationValue</key>
+ <integer>1</integer>
+ <key>bInterfaceNumber</key>
+ <integer>1</integer>
+ <key>idProduct</key>
+ <integer>40591</integer>
+ <key>idVendor</key>
+ <integer>40584</integer>
+ </dict>
<key>SI Lambda 10-3</key>
<dict>
<key>CFBundleIdentifier</key>
once this is done, you should do a :
sudo touch /System/Library/Extensions
This rebuilds the dependencies i believe, or somesuch.
Then plug in the USB and you should be golden.
If it doesn't work, make sure your Info.plist is the new one (compare it to the backup you made, it shouldn't match)
You can also try unloading and re-loading the driver
sudo kextunload /System/Library/Extensions/FTDIUSBSerialDriver.kext
sudo kextload /System/Library/Extensions/FTDIUSBSerialDriver.kext