Sam3s and AS 6.2, external ram in memory settings?

[laamanni]

This is a noob question:
We have a 512k external SRAM but how can I tell the linker to access it?

In the project properties window, I go to Toolchain->ARM/GNU linker->Memory Settings.
There are two fields: SRAM segment and External RAM Size. How to fill these fields correctly?

In Sam3s8c datasheet the external RAM location would be 0x60000000 (considered that I use SMC Chip Select 0 for the RAM and 1 for a LCD)

Any help will be appreciated!