Two I2C ports... bit banging?

[IWriteCode]

For a project I'm working on, the olinuxino seems perfect... the only drawback I see is the availability of only 1 I2C port... and I need two ports...

This could be accomplished by bit-banging I2C on GPIO ports. Are there (linux) drivers available for bit-banging I2C on GPIO ports? And how would these ports need to be wired? Would the addition of pull-up resistors be enough?