Howto install linux on ps3 hardware:

Linux on Sony hardware has been done before, but not to any great success. Some of you may remember that the PS2 could run a strange version of the open source OS with a bought package that gave you a 40GB HDD, a keyboard and a mouse. However, it did not allow for any functionality of the DVD-ROM because Sony thought you might start using your PS2 to rip off all their games.