Tegra2
Tegra2 is the dual-core Cortex-A9+FPU based part from nVidia
http://tegradeveloper.nvidia.com/tegra/
Forums: http://tegradeveloper.nvidia.com/tegra/forum
Installing linux:
There is a temporary workaround to install linux until nVidia launch their official LDK
http://tegradeveloper.nvidia.com/tegra/forum/workaround-run-ubuntu-now
Binary kernel and config file: File:Ianr-tegra-9.12.9-kernel.tar.bz2 Note patch contains some performance improvements to L2 [build instructions and source code detailed in forum posting]
Fastboot utility (prebuilt for x86 Linux host machine - tested on Debian Lenny and Ubuntu Karmic) [build instructions and source code detailed in forum posting] File:Ianr-fastboot-linux.tar.bz2