Question about defining a Custom component in Sopc builder

Dear akira,

I learned your customIPinstruction.pdf, very clear.

However, do you know how to associate my own HAL driver with the custom component? similar as the components located at C:\altera\11.1\ip\altera\sopc_builder_ip? as you know, when I inst a altera component within sopc, then niosii-ide will automatically generate a bsp project combining all the device drivers used in the sopc design. For example, based on your custom design, how can you add your own HAL driver and this can be discovered by niosii-IDE?

thank you very much.

David.