source: rtems/c/src/lib/libbsp/m68k/efi68k/startup/bspstart.c @ c4808ca

4.104.114.84.95
Last change on this file since c4808ca was 9700578, checked in by Joel Sherrill <joel.sherrill@…>, on 10/30/95 at 21:54:45

SPARC port passes all tests

  • Property mode set to 100644
File size: 5.3 KB
Line 
1#define STACK_CHECKER_ON
2/*  bsp_start()
3 *
4 *  This routine starts the application.  It includes application,
5 *  board, and monitor specific initialization and configuration.
6 *  The generic CPU dependent initialization has been performed
7 *  before this routine is invoked.
8 *
9 *  INPUT:  NONE
10 *
11 *  OUTPUT: NONE
12 *
13 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
14 *  On-Line Applications Research Corporation (OAR).
15 *  All rights assigned to U.S. Government, 1994.
16 *
17 *  This material may be reproduced by or for the U.S. Government pursuant
18 *  to the copyright license under the clause at DFARS 252.227-7013.  This
19 *  notice must appear in all copies of this file and its derivatives.
20 *
21 *  $Id$
22 */
23
24#include <stdlib.h>
25#include <bsp.h>
26#include <rtems/libio.h>
27#include <libcsupport.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 
48rtems_unsigned32 Timer_interrupts;
49
50/* extern void set_debug_traps(void); */
51/* extern void breakpoint(void); */
52
53/*      Initialize whatever libc we are using
54 *      called from postdriver hook
55 */
56
57void bsp_libc_init()
58{
59  extern int end;
60  rtems_unsigned32        heap_start;
61 
62  heap_start = (rtems_unsigned32) &end;
63  if (heap_start & (CPU_ALIGNMENT-1))
64    heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
65 
66  RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
67   
68  /*
69   *  Init the RTEMS libio facility to provide UNIX-like system
70   *  calls for use by newlib (ie: provide __open, __close, etc)
71   *  Uses malloc() to get area for the iops, so must be after malloc init
72   */
73
74  rtems_libio_init();
75
76  /*
77   * Set up for the libc handling.
78   */
79 
80  if (BSP_Configuration.ticks_per_timeslice > 0)
81    libc_init(1);                /* reentrant if possible */
82  else
83    libc_init(0);                /* non-reentrant */
84 
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 = __open("/dev/console", O_RDONLY, 0)) == -1)
138    rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' );
139 
140  if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
141    rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' );
142 
143  if ((stderr_fd = __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/*   set_debug_traps();    */
159/*   breakpoint(); */
160
161  /*
162   *  we only use a hook to get the C library initialized.
163   */
164
165  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
166 
167  Cpu_table.predriver_hook = NULL;
168 
169  Cpu_table.postdriver_hook = bsp_postdriver_hook;
170
171  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
172
173  Cpu_table.do_zero_of_workspace = TRUE;
174
175  m68k_get_vbr( vbr );
176  Cpu_table.interrupt_vector_table = vbr;
177
178  Cpu_table.interrupt_stack_size = 4096;
179
180  Cpu_table.extra_system_initialization_stack = 0;
181
182  /*
183   *  Copy the table
184   */
185
186  BSP_Configuration = Configuration;
187
188  BSP_Configuration.work_space_start = (void *)
189     (RAM_END - BSP_Configuration.work_space_size);
190
191  if ((unsigned int)BSP_Configuration.work_space_start <
192      (unsigned int)((stack_start + stack_size) & 0xffffffc0) ) {
193    /* rtems_fatal_error_occurred can not be used before initalization */
194    RAW_PUTS("\n\rRTEMS: Out of memory.\n\r");
195    RAW_PUTS("RTEMS:    Check RAM_END and the size of the work space.\n\r");
196    goto exit;
197  }
198
199  /*
200   * Add 1 region for Malloc in libc_low
201   */
202
203  BSP_Configuration.maximum_regions++;
204
205  /*
206   * Add 1 extension for newlib libc
207   */
208
209#ifdef RTEMS_NEWLIB
210    BSP_Configuration.maximum_extensions++;
211#endif
212
213  /*
214   * Add another extension if using the stack checker
215   */
216
217#ifdef STACK_CHECKER_ON
218    BSP_Configuration.maximum_extensions++;
219#endif
220
221  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
222  /* does not return */
223
224  /* Clock_exit is done as an atexit() function */
225
226exit:
227  /* configure peripherals for safe exit */
228  bsp_cleanup();
229
230  /* return like a "normal" subroutine to the monitor */
231  return 0;
232}
233
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