source: rtems/c/src/lib/libbsp/shared/bootcard.c @ 5a23ca84

4.104.114.84.95
Last change on this file since 5a23ca84 was c629812, checked in by Joel Sherrill <joel.sherrill@…>, on Dec 13, 1999 at 10:10:45 PM

Removed warnings.

  • Property mode set to 100644
File size: 3.3 KB
Line 
1/*
2 *  A simple main which can be used on any embedded target.
3 *
4 *  This style of initialization insures that the C++ global
5 *  constructors are executed after RTEMS is initialized.
6 *
7 *  Thanks to Chris Johns <cjohns@plessey.com.au> for this idea.
8 *
9 *  COPYRIGHT (c) 1989-1999.
10 *  On-Line Applications Research Corporation (OAR).
11 *
12 *  The license and distribution terms for this file may be
13 *  found in the file LICENSE in this distribution or at
14 *  http://www.OARcorp.com/rtems/license.html.
15 *
16 *  $Id$
17 */
18
19#include <bsp.h>
20
21#ifdef USE_INIT_FINI
22#include <stdlib.h> /* for atexit() */
23#endif
24
25extern void bsp_start( void );
26extern void bsp_cleanup( void );
27
28extern rtems_configuration_table  Configuration;
29extern rtems_configuration_table  BSP_Configuration;
30extern rtems_cpu_table            Cpu_table;
31
32rtems_api_configuration_table BSP_RTEMS_Configuration;
33
34#ifdef RTEMS_POSIX_API
35posix_api_configuration_table BSP_POSIX_Configuration;
36#endif
37
38/* Initialize C++ global Ctor/Dtor and initializes exception handling. */
39#if defined(USE_INIT_FINI)
40extern void _fini( void );
41extern void _init( void );
42#endif
43
44rtems_interrupt_level bsp_isr_level;
45
46/*
47 *  Since there is a forward reference
48 */
49
50int main(int argc, char **argv, char **envp);
51
52int boot_card(int argc, char **argv, char **envp)
53{
54  int    status;
55  static char  *argv_pointer = NULL;
56  static char  *envp_pointer = NULL;
57  char **argv_p = &argv_pointer;
58  char **envp_p = &envp_pointer;
59
60  /*
61   *  Set things up so main is called with real pointers for argv and envp.
62   *  If the BSP has passed us something useful, then pass it on.
63   */
64
65  if ( argv )
66    argv_p = argv;
67
68  if ( envp )
69    envp_p = envp;
70
71
72  /*
73   *  Set default values for the CPU Table fields all ports must have.
74   *  These values can be overridden in bsp_start() but they are
75   *  right most of the time.
76   */
77
78  Cpu_table.pretasking_hook                 = NULL;
79  Cpu_table.predriver_hook                  = NULL;
80  Cpu_table.postdriver_hook                 = NULL;
81  Cpu_table.idle_task                       = NULL;
82  Cpu_table.do_zero_of_workspace            = TRUE;
83  Cpu_table.interrupt_stack_size            = RTEMS_MINIMUM_STACK_SIZE;
84  Cpu_table.extra_mpci_receive_server_stack = 0;
85  Cpu_table.stack_allocate_hook             = NULL;
86  Cpu_table.stack_free_hook                 = NULL;
87
88
89  /*
90   *  Copy the configuration table so we and the BSP wants to change it.
91   */
92
93  BSP_Configuration       = Configuration;
94
95  BSP_RTEMS_Configuration = *Configuration.RTEMS_api_configuration;
96  BSP_Configuration.RTEMS_api_configuration = &BSP_RTEMS_Configuration;
97
98#ifdef RTEMS_POSIX_API
99  BSP_POSIX_Configuration = *Configuration.POSIX_api_configuration;
100  BSP_Configuration.POSIX_api_configuration = &BSP_POSIX_Configuration;
101#endif
102
103  /*
104   *  The atexit hook will be before the static destructor list's entry
105   *  point.
106   */
107
108  bsp_start();
109
110  /*
111   *  Initialize RTEMS but do NOT start multitasking.
112   */
113
114  bsp_isr_level =
115    rtems_initialize_executive_early( &BSP_Configuration, &Cpu_table );
116
117  /*
118   *  Call main() and get the global constructors invoked if there
119   *  are any.
120   */
121#ifdef USE_INIT_FINI
122   atexit( _fini );
123   _init();
124#endif
125
126  status = main( argc, argv_p, envp_p );
127
128  /*
129   *  Perform any BSP specific shutdown actions.
130   */
131
132  bsp_cleanup(); 
133
134  /*
135   *  Now return to the start code.
136   */
137
138  return status;
139}
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