source: rtems/c/src/lib/libbsp/m68k/mvme136/startup/bspstart.c @ e6d4b1d

4.104.114.84.95
Last change on this file since e6d4b1d was e6d4b1d, checked in by Joel Sherrill <joel.sherrill@…>, on May 28, 1996 at 1:13:34 PM

added initial posix configuration support

  • Property mode set to 100644
File size: 5.5 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 *  $Id$
21 */
22
23#include <bsp.h>
24#include <rtems/libio.h>
25
26#include <libcsupport.h>
27#include <z8036.h>
28
29#include <string.h>
30#include <fcntl.h>
31
32#ifdef STACK_CHECKER_ON
33#include <stackchk.h>
34#endif
35
36/*
37 *  The original table from the application and our copy of it with
38 *  some changes.
39 */
40
41extern rtems_configuration_table  Configuration;
42rtems_configuration_table         BSP_Configuration;
43
44rtems_cpu_table Cpu_table;
45
46char *rtems_progname;
47
48/*      Initialize whatever libc we are using
49 *      called from postdriver hook
50 */
51
52void bsp_libc_init()
53{
54    extern int end;
55    rtems_unsigned32        heap_start;
56
57    heap_start = (rtems_unsigned32) &end;
58    if (heap_start & (CPU_ALIGNMENT-1))
59        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
60
61    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
62
63    /*
64     *  Init the RTEMS libio facility to provide UNIX-like system
65     *  calls for use by newlib (ie: provide __open, __close, etc)
66     *  Uses malloc() to get area for the iops, so must be after malloc init
67     */
68
69    rtems_libio_init();
70
71    /*
72     * Set up for the libc handling.
73     */
74
75    if (BSP_Configuration.ticks_per_timeslice > 0)
76        libc_init(1);                /* reentrant if possible */
77    else
78        libc_init(0);                /* non-reentrant */
79}
80
81/*
82 *  Function:   bsp_pretasking_hook
83 *  Created:    95/03/10
84 *
85 *  Description:
86 *      BSP pretasking hook.  Called just before drivers are initialized.
87 *      Used to setup libc and install any BSP extensions.
88 *
89 *  NOTES:
90 *      Must not use libc (to do io) from here, since drivers are
91 *      not yet initialized.
92 *
93 */
94 
95void
96bsp_pretasking_hook(void)
97{
98    bsp_libc_init();
99 
100#ifdef STACK_CHECKER_ON
101    /*
102     *  Initialize the stack bounds checker
103     *  We can either turn it on here or from the app.
104     */
105 
106    Stack_check_Initialize();
107#endif
108 
109#ifdef RTEMS_DEBUG
110    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
111#endif
112}
113 
114
115/*
116 * After drivers are setup, register some "filenames"
117 * and open stdin, stdout, stderr files
118 *
119 * Newlib will automatically associate the files with these
120 * (it hardcodes the numbers)
121 */
122 
123void
124bsp_postdriver_hook(void)
125{
126  int stdin_fd, stdout_fd, stderr_fd;
127  int error_code;
128 
129  error_code = 'S' << 24 | 'T' << 16;
130 
131  if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1)
132    rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' );
133 
134  if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
135    rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' );
136 
137  if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
138    rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' );
139 
140  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
141    rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' );
142}
143
144
145int main(
146  int argc,
147  char **argv,
148  char **environp
149)
150{
151  m68k_isr_entry *monitors_vector_table;
152  int             index;
153
154  if ((argc > 0) && argv && argv[0])
155    rtems_progname = argv[0];
156  else
157    rtems_progname = "RTEMS";
158
159  monitors_vector_table = (m68k_isr_entry *)0;   /* 135Bug Vectors are at 0 */
160  m68k_set_vbr( monitors_vector_table );
161
162  for ( index=2 ; index<=255 ; index++ )
163    M68Kvec[ index ] = monitors_vector_table[ 32 ];
164
165  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
166  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
167  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
168  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
169
170  m68k_set_vbr( &M68Kvec );
171
172  (*(rtems_unsigned8 *)0xfffb0067) = 0x7f; /* make VME access round-robin */
173
174  m68k_enable_caching();
175
176  /*
177   *  we only use a hook to get the C library initialized.
178   */
179
180  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
181
182  Cpu_table.predriver_hook = NULL;
183
184  Cpu_table.postdriver_hook = bsp_postdriver_hook;
185
186  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
187
188  Cpu_table.do_zero_of_workspace = TRUE;
189
190  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
191
192  Cpu_table.interrupt_stack_size = 4096;
193
194  Cpu_table.extra_mpci_receive_server_stack = 0;
195
196  /*
197   *  Copy the table
198   */
199
200  BSP_Configuration = Configuration;
201
202  BSP_Configuration.work_space_start = (void *)
203     (RAM_END - BSP_Configuration.work_space_size);
204
205  /*
206   * Add 1 region for the RTEMS Malloc
207   */
208
209  BSP_Configuration.RTEMS_api_configuration->maximum_regions++;
210
211  /*
212   * Add 1 extension for newlib libc
213   */
214
215#ifdef RTEMS_NEWLIB
216    BSP_Configuration.maximum_extensions++;
217#endif
218
219  /*
220   * Add another extension if using the stack checker
221   */
222
223#ifdef STACK_CHECKER_ON
224    BSP_Configuration.maximum_extensions++;
225#endif
226
227  /*
228   * Tell libio how many fd's we want and allow it to tweak config
229   */
230
231  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
232
233  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
234  /* does not return */
235
236  bsp_cleanup();
237
238  return 0;
239}
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