File : s-macres-8349e.adb
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT RUN-TIME COMPONENTS --
4 -- --
5 -- S Y S T E M . M A C H I N E _ R E S E T --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 2011-2016, Free Software Foundation, Inc. --
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 ------------------------------------------------------------------------------
31
32 with System.BB.Board_Parameters; use System.BB.Board_Parameters;
33 with Interfaces; use Interfaces;
34
35 package body System.Machine_Reset is
36 procedure OS_Exit;
37 pragma Export (Ada, OS_Exit, "_exit");
38 pragma No_Return (OS_Exit);
39 -- Reset the board or shut-down the simulator
40
41 procedure OS_Abort;
42 pragma Export (Ada, OS_Abort, "abort");
43 pragma No_Return (OS_Abort);
44 -- Same as OS_Exit (rename in body to allow multiple pragma Export)
45
46 --------------
47 -- OS_Abort --
48 --------------
49
50 procedure OS_Abort renames OS_Exit;
51
52 -------------
53 -- OS_Exit --
54 -------------
55
56 procedure OS_Exit is
57 RPR : Unsigned_32;
58 for RPR'Address use IMMRBAR + 16#0918#;
59 pragma Volatile (RPR);
60 pragma Import (Ada, RPR);
61
62 RCR : Unsigned_32;
63 for RCR'Address use IMMRBAR + 16#091C#;
64 pragma Volatile (RCR);
65 pragma Import (Ada, RCR);
66
67 begin
68 -- Enable access
69 RPR := 16#52535445#;
70
71 -- Trigger an hard reset
72
73 RCR := 16#2#;
74 -- Make sure we don't return before reset takes effect
75
76 loop
77 null;
78 end loop;
79 end OS_Exit;
80
81 ----------
82 -- Stop --
83 ----------
84
85 procedure Stop renames OS_Exit;
86 end System.Machine_Reset;