What is uvm coreservice and how to use it?

Hi all, Today we are going to learn about special feature in UVM called "uvm coreservice". This is added in UVM 1.2. It is a common point to get access to all uvm central services. This services include uvm_factory, uvm_report_server etc.

Suppose if we want to override a particular component in base test using factory we need to get uvm_factory instance. Or if we want to customize the report function we need to get uvm_report server instance. These can be get easily in UVM-1.1 but in UVM 1.2 we dont have direct access to it. So here we need to use the singleton instance of uvm_coreservice to get instance of factory, report_server etc.

Now we will see how to make use of it.

                


As shown above, coreservice has static built-in method called get(). This is used to get the singleton instance of coreservice. Below shown is a way to get the coreservice handle into your test-bench environment.

      
        

So, by using coreservice handle we can get instance of factory as shown below.

        

         

Not only factory, we can also get report server and uvm_root as well. It is a one point access to all services in UVM.

That's all about uvm coreservice. Next time I will come up with one more new topic. Stay tuned..!