Firebird Project has now ports for the top4 embedded processors
Firebird Project has now ports for the top4 embedded processors used in small devices like phones
The top cpu used in that area are arm,x86,mips,powerpc according to linuxdevices survey
http://www.linuxdevices.com/files/article077/embedded_processor_current_trend.jpg
Here are the build results for firebird2.0 package on debian on main cpu architectures used in debian
http://buildd.debian.org/pkg.cgi?pkg=firebird2.0
The latest port is for arm cpu , and here is the devel-thread
http://www.nabble.com/arm-port-patch-td16497801.html