File : s-bbbopa-leon.ads
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
4 -- --
5 -- S Y S T E M . B B . B O A R D _ P A R A M E T E R S --
6 -- --
7 -- S p e c --
8 -- --
9 -- Copyright (C) 2016, AdaCore --
10 -- --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
17 -- --
18 -- --
19 -- --
20 -- --
21 -- --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
26 -- --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
29 -- --
30 -- The port of GNARL to bare board targets was initially developed by the --
31 -- Real-Time Systems Group at the Technical University of Madrid. --
32 -- --
33 ------------------------------------------------------------------------------
34
35 -- This package defines board parameters for the leon2 processor
36
37 package System.BB.Board_Parameters is
38 pragma Pure;
39
40 --------------------
41 -- Hardware clock --
42 --------------------
43
44 Clock_Frequency : constant Positive := 50_000_000;
45 -- Frequency of the system clock
46
47 Prescaler_Min : constant := 3;
48 -- In order to obtain the highest granularity of the clock we set the
49 -- minimum allowed prescaler division factor, which is 4, corresponding
50 -- to a prescaler reload register value of 3.
51
52 ----------
53 -- CPUS --
54 ----------
55
56 Max_Number_Of_CPUs : constant := 1;
57 -- Maximum number of CPUs. Always 1 for leon2.
58
59 end System.BB.Board_Parameters;