source: rtems/c/src/lib/libbsp/m68k/gen68360/startup/bspstart.c @ 4b06db75

4.104.114.84.95
Last change on this file since 4b06db75 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: 5.6 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 
28#include <string.h>
29#include <fcntl.h>
30 
31#ifdef STACK_CHECKER_ON
32#include <stackchk.h>
33#endif
34
35/*
36 *  The original table from the application and our copy of it with
37 *  some changes.
38 */
39
40extern rtems_configuration_table Configuration;
41rtems_configuration_table  BSP_Configuration;
42
43rtems_cpu_table Cpu_table;
44
45char *rtems_progname;
46
47/*      Initialize whatever libc we are using
48 *      called from postdriver hook
49 */
50
51void bsp_libc_init()
52{
53    extern void *_HeapStart;
54    extern rtems_unsigned32 _HeapSize;
55
56    /*
57     *  The last parameter to RTEMS_Malloc_Initialize is the "chunk"
58     *  size which a multiple of will be requested on each sbrk()
59     *  call by malloc().  A value of 0 indicates that sbrk() should
60     *  not be called to extend the heap.
61     */
62
63    RTEMS_Malloc_Initialize(&_HeapStart, _HeapSize, 0);
64
65    /*
66     *  Init the RTEMS libio facility to provide UNIX-like system
67     *  calls for use by newlib (ie: provide __open, __close, etc)
68     *  Uses malloc() to get area for the iops, so must be after malloc init
69     */
70
71    rtems_libio_init();
72
73    /*
74     * Set up for the libc handling.
75     */
76
77    if (BSP_Configuration.ticks_per_timeslice > 0)
78        libc_init(1);                /* reentrant if possible */
79    else
80        libc_init(0);                /* non-reentrant */
81}
82
83/*
84 *  Function:   bsp_pretasking_hook
85 *  Created:    95/03/10
86 *
87 *  Description:
88 *      BSP pretasking hook.  Called just before drivers are initialized.
89 *      Used to setup libc and install any BSP extensions.
90 *
91 *  NOTES:
92 *      Must not use libc (to do io) from here, since drivers are
93 *      not yet initialized.
94 *
95 */
96 
97void
98bsp_pretasking_hook(void)
99{
100    bsp_libc_init();
101 
102#ifdef STACK_CHECKER_ON
103    /*
104     *  Initialize the stack bounds checker
105     *  We can either turn it on here or from the app.
106     */
107 
108    Stack_check_Initialize();
109#endif
110 
111#ifdef RTEMS_DEBUG
112    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
113#endif
114}
115 
116
117/*
118 * After drivers are setup, register some "filenames"
119 * and open stdin, stdout, stderr files
120 *
121 * Newlib will automatically associate the files with these
122 * (it hardcodes the numbers)
123 */
124 
125void
126bsp_postdriver_hook(void)
127{
128  int stdin_fd, stdout_fd, stderr_fd;
129  int error_code;
130 
131  error_code = 'S' << 24 | 'T' << 16;
132 
133  if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1)
134    rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' );
135 
136  if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
137    rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' );
138 
139  if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
140    rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' );
141 
142  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
143    rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' );
144}
145
146int main(
147  int argc,
148  char **argv,
149  char **environp
150)
151{
152  extern void *_WorkspaceBase;
153  if ((argc > 0) && argv && argv[0])
154    rtems_progname = argv[0];
155  else
156    rtems_progname = "RTEMS";
157
158  /*
159   *  Allocate the memory for the RTEMS Work Space.  This can come from
160   *  a variety of places: hard coded address, malloc'ed from outside
161   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
162   *  typically done by stock BSPs) by subtracting the required amount
163   *  of work space from the last physical address on the CPU board.
164   */
165#if 0
166  Cpu_table.interrupt_vector_table = (mc68000_isr *) 0/*&M68Kvec*/;
167#endif
168
169
170  /*
171   *  Copy the Configuration Table .. so we can change it
172   */
173
174  BSP_Configuration = Configuration;
175
176  /*
177   * Add 1 region for the RTEMS Malloc
178   */
179
180  BSP_Configuration.RTEMS_api_configuration->maximum_regions++;
181
182  /*
183   * Add 1 extension for newlib libc
184   */
185
186#ifdef RTEMS_NEWLIB
187    BSP_Configuration.maximum_extensions++;
188#endif
189
190  /*
191   * Add another extension if using the stack checker
192   */
193
194#ifdef STACK_CHECKER_ON
195    BSP_Configuration.maximum_extensions++;
196#endif
197
198  /*
199   * Tell libio how many fd's we want and allow it to tweak config
200   */
201
202  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
203
204  /*
205   *  Need to "allocate" the memory for the RTEMS Workspace and
206   *  tell the RTEMS configuration where it is.  This memory is
207   *  not malloc'ed.  It is just "pulled from the air".
208   */
209
210  BSP_Configuration.work_space_start = (void *)&_WorkspaceBase;
211
212  /*
213   *  initialize the CPU table for this BSP
214   */
215
216  /*
217   *  we do not use the pretasking_hook
218   */
219
220  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
221
222  Cpu_table.predriver_hook = NULL;
223
224  Cpu_table.postdriver_hook = bsp_postdriver_hook;
225
226  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
227
228  Cpu_table.do_zero_of_workspace = TRUE;
229
230  Cpu_table.interrupt_stack_size = 4096;
231
232  Cpu_table.extra_mpci_receive_server_stack = 0;
233
234  /*
235   *  Don't forget the other CPU Table entries.
236   */
237
238  /*
239   *  Start RTEMS
240   */
241
242  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
243
244  bsp_cleanup();
245
246  return 0;
247}
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