Setting using uvm_config_db

UVM
,
2

In reply to bachan21:

Several comments:

  • You should always check the return value of the get() call.
  • Your component names passed in create() are what is used during the get() call. They should match the names in the set() call.
  • You should always set() prior to create().
  • Don’t use a ‘.’ in the set() call hierarchy.

`include "uvm_macros.svh"
import uvm_pkg::*;
 
class env extends uvm_env;
 
    `uvm_component_utils(env)
 
    function new(string name, uvm_component parent);
        super.new(name, parent);    
    endfunction //new()
 
    int value;
 
    virtual function void build_phase(uvm_phase phase);
        super.build_phase(phase);
 
      if (!uvm_config_db#(int) :: get(this,"","value",value))
        `uvm_fatal("ERRGET", "Can't get a valid value");
 
      `uvm_info(get_name(), $sformatf("VALUE = %d", value), UVM_NONE)
    endfunction
endclass //env
 
class test extends uvm_test;
 
    `uvm_component_utils(test)
 
    function new(string name, uvm_component parent);
        super.new(name, parent);    
    endfunction //new()
 
    env E1,E2;
 
    virtual function void build_phase(uvm_phase phase);
        super.build_phase(phase);

        //Setting value = 10 for env1 E1 
        uvm_config_db#(int)::set(this,"E1","value",10);
 
        //Setting value = 20 for env2 E2
        uvm_config_db#(int)::set(this,"E2","value",20);
 
        E1 = env::type_id::create("E1",this);
        E2 = env::type_id::create("E2",this);
     endfunction
 
endclass //agent2 extends uvm_agent
 
module tb;
    initial begin
        run_test("test");
    end
endmodule