source: rtems/c/src/lib/libbsp/m68k/mvme162/startup/bspstart.c @ 634e746

4.104.114.84.95
Last change on this file since 634e746 was 634e746, checked in by Joel Sherrill <joel.sherrill@…>, on Jan 29, 1997 at 12:28:47 AM

All RTEMS system call implementation renamed to be rtems_*.

  • Property mode set to 100644
File size: 6.0 KB
Line 
1/*  bsp_start()
2 *
3 *  This routine starts the application.  It includes application,
4 *  board, and monitor specific initialization and configuration.
5 *  The generic CPU dependent initialization has been performed
6 *  before this routine is invoked.
7 *
8 *  INPUT:  NONE
9 *
10 *  OUTPUT: NONE
11 *
12 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
13 *  On-Line Applications Research Corporation (OAR).
14 *  All rights assigned to U.S. Government, 1994.
15 *
16 *  This material may be reproduced by or for the U.S. Government pursuant
17 *  to the copyright license under the clause at DFARS 252.227-7013.  This
18 *  notice must appear in all copies of this file and its derivatives.
19 *
20 *  Modifications of respective RTEMS file: COPYRIGHT (c) 1994.
21 *  EISCAT Scientific Association. M.Savitski
22 *
23 *  This material is a part of the MVME162 Board Support Package
24 *  for the RTEMS executive. Its licensing policies are those of the
25 *  RTEMS above.
26 *
27 *  $Id$
28 */
29
30#include <bsp.h>
31#include <rtems/libio.h>
32 
33#include <libcsupport.h>
34 
35#include <string.h>
36#include <fcntl.h>
37 
38#ifdef STACK_CHECKER_ON
39#include <stackchk.h>
40#endif
41
42/*
43 *  The original table from the application and our copy of it with
44 *  some changes.
45 */
46
47extern rtems_configuration_table  Configuration;
48rtems_configuration_table  BSP_Configuration;
49
50rtems_cpu_table Cpu_table;
51
52char *rtems_progname;
53
54/*      Initialize whatever libc we are using
55 *      called from postdriver hook
56 */
57
58void bsp_libc_init()
59{
60    extern int end;
61    rtems_unsigned32        heap_start;
62
63    heap_start = (rtems_unsigned32) &end;
64    if (heap_start & (CPU_ALIGNMENT-1))
65        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
66
67    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
68
69    /*
70     *  Init the RTEMS libio facility to provide UNIX-like system
71     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
72     *  Uses malloc() to get area for the iops, so must be after malloc init
73     */
74
75    rtems_libio_init();
76
77    /*
78     * Set up for the libc handling.
79     */
80
81    if (BSP_Configuration.ticks_per_timeslice > 0)
82        libc_init(1);                /* reentrant if possible */
83    else
84        libc_init(0);                /* non-reentrant */
85}
86
87/*
88 *  Function:   bsp_pretasking_hook
89 *  Created:    95/03/10
90 *
91 *  Description:
92 *      BSP pretasking hook.  Called just before drivers are initialized.
93 *      Used to setup libc and install any BSP extensions.
94 *
95 *  NOTES:
96 *      Must not use libc (to do io) from here, since drivers are
97 *      not yet initialized.
98 *
99 */
100 
101void
102bsp_pretasking_hook(void)
103{
104    bsp_libc_init();
105 
106#ifdef STACK_CHECKER_ON
107    /*
108     *  Initialize the stack bounds checker
109     *  We can either turn it on here or from the app.
110     */
111 
112    Stack_check_Initialize();
113#endif
114 
115#ifdef RTEMS_DEBUG
116    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
117#endif
118}
119 
120
121/*
122 * After drivers are setup, register some "filenames"
123 * and open stdin, stdout, stderr files
124 *
125 * Newlib will automatically associate the files with these
126 * (it hardcodes the numbers)
127 */
128 
129void
130bsp_postdriver_hook(void)
131{
132  int stdin_fd, stdout_fd, stderr_fd;
133  int error_code;
134 
135  error_code = 'S' << 24 | 'T' << 16;
136 
137  if ((stdin_fd = __rtems_open("/dev/console", O_RDONLY, 0)) == -1)
138    rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' );
139 
140  if ((stdout_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1)
141    rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' );
142 
143  if ((stderr_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1)
144    rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' );
145 
146  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
147    rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' );
148}
149
150int main(
151  int argc,
152  char **argv,
153  char **environp
154)
155{
156  m68k_isr_entry *monitors_vector_table;
157  int             index;
158
159  if ((argc > 0) && argv && argv[0])
160    rtems_progname = argv[0];
161  else
162    rtems_progname = "RTEMS";
163
164  /*
165   *  162Bug Vectors are at 0xFFE00000
166   */
167
168  monitors_vector_table = (m68k_isr_entry *)0xFFE00000;
169
170  m68k_set_vbr( monitors_vector_table );
171
172  for ( index=2 ; index<=255 ; index++ )
173    M68Kvec[ index ] = monitors_vector_table[ 32 ];
174
175  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
176  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
177  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
178  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
179
180  m68k_set_vbr( &M68Kvec );
181
182  /*
183   *  You may wish to make the VME arbitration round-robin here, currently
184   *  we leave it as it is.
185   */
186
187  /* set the Interrupt Base Vectors */
188
189  lcsr->vector_base = (VBR0 << 28) | (VBR1 << 24);
190
191  page_table_init();
192
193  /*
194   *  we only use a hook to get the C library initialized.
195   */
196
197  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
198
199  Cpu_table.predriver_hook = NULL;
200
201  Cpu_table.postdriver_hook = bsp_postdriver_hook;
202
203  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
204
205  Cpu_table.do_zero_of_workspace = TRUE;
206
207  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
208
209  Cpu_table.interrupt_stack_size = 4096;
210
211  Cpu_table.extra_mpci_receive_server_stack = 0;
212
213  /*
214   *  Copy the table
215   */
216
217  BSP_Configuration = Configuration;
218
219  /*
220   * Add 1 region for the RTEMS Malloc
221   */
222
223  BSP_Configuration.RTEMS_api_configuration->maximum_regions++;
224
225  /*
226   * Add 1 extension for newlib libc
227   */
228
229#ifdef RTEMS_NEWLIB
230    BSP_Configuration.maximum_extensions++;
231#endif
232
233  /*
234   * Add another extension if using the stack checker
235   */
236
237#ifdef STACK_CHECKER_ON
238    BSP_Configuration.maximum_extensions++;
239#endif
240
241  /*
242   * Tell libio how many fd's we want and allow it to tweak config
243   */
244
245  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
246
247  BSP_Configuration.work_space_start = (void *)
248     (RAM_END - BSP_Configuration.work_space_size);
249
250  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
251  /* does not return */
252
253  bsp_cleanup();
254
255  return 0;
256}
Note: See TracBrowser for help on using the repository browser.