How to display the logo on the address bar?

Short answer: yes. That's how many browsers work.

Firefox: http://msujaws.wordpress.com/2012/04/23/an-update-to-site-identity-in-desktop-firefox/

Chrome: why doesn't the favicon file show in the address bar of google chrome? and http://productforums.google.com/forum/#!topic/chrome/kUQOKVUwUmw

In the wikipedia page, you can find some more about browser support. In short, Firefox and Chrome don't do it, Explorer, Safari and Opera do.

It is up to the browser to decide where/whether to display a favicon.

Chrome reserved the addressbar for the address and an indication of the protocol.

There is not much you can do about it.