To install the Mars Eclipse Yocto Plug-in from the update site, follow these steps:
Start up the Eclipse IDE.
In Eclipse, select "Install New Software" from the "Help" menu.
Click "Add..." in the "Work with:" area.
Enter
http://downloads.yoctoproject.org/releases/eclipse-plugin/2.2/mars
in the URL field and provide a meaningful name
in the "Name" field.
Click "OK" to have the entry added to the "Work with:" drop-down list.
Select the entry for the plug-in from the "Work with:" drop-down list.
Check the boxes next to the following:
Yocto Project SDK Plug-in Yocto Project Documentation plug-in
Complete the remaining software installation steps and then restart the Eclipse IDE to finish the installation of the plug-in.