PL/SQL :: Update Multiple Records Using Store Procedure?

i am trying to update multiple records using store procedure but failed to achieve

for example my source is

emp_name sal
abhi 2000
arti 1500
priya 1700

i want to increase salary of emp whose salary is less than 2000 it means rest two salary should get update..using stored procedure only

i have tried following code

create or replace procedure upt_sal(p_sal out emp.sal%type, p_cursor out sys_refcursor)
is
begin
open p_cursor for
select sal into p_sal from emp;
if sal<2000 then
update emp set sal= sal+200;
end i;f
end;

and i have called the procedure using following codes

set serveroutput on
declare
p_sal emp.sal%type;
v_cursor sys_refcursor;
begin
upt_sal(p_sal,v_cursor);
fetch v_cursor into p_sal;
dbms_output.put_line(p_sal);
end;

the program is executing but i should get o/p like this after updating

1700
1900

but i am getting first row only

2000

and record is not updating...