Running Dhrystone or CoreMarks benchmarks

[kammoh]

I see an impressive 1.9 DMIPS/MHz performance reported here for the RV32IM version of Piccolo. I'm interested in reproducing this result as well as study the effect of different configurations. I would also be interested in CoreMarks figures as a better alternative. Are ports of Dhrystone/CoreMark available for Piccolo/Flute/Toooba?

As the results of these tests are usually printed on the console:
Are there any documentation/examples available for using the available UART? Do I only need to store at address '0xc0000000' ? Is there a libgloss port or even simple a printf wrapper available?