source: rtems/c/src/lib/libbsp/m68k/efi68k/startup/bspstart.c @ 486c329

4.104.114.84.95
Last change on this file since 486c329 was 486c329, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 20, 1995 at 3:05:19 PM

Actually adding efi bsp's from John Gwynne after forgetting to
commit them.

  • Property mode set to 100644
File size: 5.1 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 
134  if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1)
135    rtems_fatal_error_occurred('STD0');
136 
137  if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
138    rtems_fatal_error_occurred('STD1');
139 
140  if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
141    rtems_fatal_error_occurred('STD2');
142 
143  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
144    rtems_fatal_error_occurred('STIO');
145}
146
147int main(
148  int argc,
149  char **argv,
150  char **environp
151)
152{
153  void           *vbr;
154
155/*   set_debug_traps();    */
156/*   breakpoint(); */
157
158  /*
159   *  we only use a hook to get the C library initialized.
160   */
161
162  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
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 = 4096;
176
177  Cpu_table.extra_system_initialization_stack = 0;
178
179  /*
180   *  Copy the table
181   */
182
183  BSP_Configuration = Configuration;
184
185  BSP_Configuration.work_space_start = (void *)
186     (RAM_END - BSP_Configuration.work_space_size);
187
188  if ((unsigned int)BSP_Configuration.work_space_start < 
189      (unsigned int)((stack_start + stack_size) & 0xffffffc0) ) {
190    /* rtems_fatal_error_occurred can not be used before initalization */
191    RAW_PUTS("\n\rRTEMS: Out of memory.\n\r");
192    RAW_PUTS("RTEMS:    Check RAM_END and the size of the work space.\n\r");
193    goto exit;
194  }
195
196  /*
197   * Add 1 region for Malloc in libc_low
198   */
199
200  BSP_Configuration.maximum_regions++;
201
202  /*
203   * Add 1 extension for newlib libc
204   */
205
206#ifdef RTEMS_NEWLIB
207    BSP_Configuration.maximum_extensions++;
208#endif
209
210  /*
211   * Add another extension if using the stack checker
212   */
213
214#ifdef STACK_CHECKER_ON
215    BSP_Configuration.maximum_extensions++;
216#endif
217
218  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
219  /* does not return */
220
221  /* Clock_exit is done as an atexit() function */
222
223exit:
224  /* configure peripherals for safe exit */
225  bsp_cleanup();
226
227  /* return like a "normal" subroutine to the monitor */
228  return 0;
229}
230
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