source: rtems/c/src/lib/libbsp/m68k/efi332/startup/bspstart.c @ 6335022e

4.104.114.84.95
Last change on this file since 6335022e was 6335022e, checked in by Joel Sherrill <joel.sherrill@…>, on Mar 11, 1997 at 3:42:59 PM

updates from John Gwynne

  • Property mode set to 100644
File size: 5.2 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#include <libcsupport.h>
26 
27#include <string.h>
28#include <fcntl.h>
29 
30#ifdef STACK_CHECKER_ON
31#include <stackchk.h>
32#endif
33
34/*
35 *  The original table from the application and our copy of it with
36 *  some changes.
37 */
38
39extern rtems_configuration_table  Configuration;
40rtems_configuration_table         BSP_Configuration;
41
42rtems_cpu_table Cpu_table;
43
44char *rtems_progname;
45
46/*      Initialize whatever libc we are using
47 *      called from postdriver hook
48 */
49
50void bsp_libc_init()
51{
52/*   extern int end; */
53  rtems_unsigned32        heap_start;
54 
55  heap_start = (rtems_unsigned32) BSP_Configuration.work_space_start +
56               (rtems_unsigned32) BSP_Configuration.work_space_size;
57  if (heap_start & (CPU_ALIGNMENT-1))
58    heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
59 
60  if (heap_start > RAM_END) {
61    /* rtems_fatal_error_occurred can not be used before initalization */
62    RAW_PUTS("\n\rRTEMS: Out of memory.\n\r");
63    RAW_PUTS("RTEMS:    Check RAM_END and the size of the work space.\n\r");
64  }
65
66  RTEMS_Malloc_Initialize((void *) heap_start, 
67                          (RAM_END - heap_start), 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  void           *vbr;
157
158  /*
159   *  we only use a hook to get the C library initialized.
160   */
161
162  Cpu_table.pretasking_hook = bsp_pretasking_hook;
163
164  Cpu_table.predriver_hook = NULL;
165
166  Cpu_table.postdriver_hook = bsp_postdriver_hook;
167
168  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
169
170  Cpu_table.do_zero_of_workspace = TRUE;
171
172  m68k_get_vbr( vbr );
173  Cpu_table.interrupt_vector_table = vbr;
174
175  Cpu_table.interrupt_stack_size = 0;
176
177  Cpu_table.extra_mpci_receive_server_stack = 0;
178
179  /*
180   *  Copy the table
181   */
182
183  BSP_Configuration = Configuration;
184
185  BSP_Configuration.work_space_start = (void *)
186    (((unsigned int)_end + STACK_SIZE + 0x100) & 0xffffff00);
187
188  /*
189   * Add 1 region for Malloc in libc_low
190   */
191
192  BSP_Configuration.RTEMS_api_configuration->maximum_regions++;
193
194  /*
195   * Add 1 extension for newlib libc
196   */
197
198#ifdef RTEMS_NEWLIB
199    BSP_Configuration.maximum_extensions++;
200#endif
201
202  /*
203   * Add another extension if using the stack checker
204   */
205
206#ifdef STACK_CHECKER_ON
207    BSP_Configuration.maximum_extensions++;
208#endif
209
210  /*
211   * Tell libio how many fd's we want and allow it to tweak config
212   */
213
214  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
215
216  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
217  /* does not return */
218
219  /* Clock_exit is done as an atexit() function */
220
221  /* configure peripherals for safe exit */
222  bsp_cleanup();
223
224  /* return like a "normal" subroutine to the monitor */
225  return 0;
226}
227
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