source: rtems/c/src/lib/libbsp/i386/force386/startup/bspstart.c @ 8cbbe312

4.104.114.84.95
Last change on this file since 8cbbe312 was 8cbbe312, checked in by Joel Sherrill <joel.sherrill@…>, on 02/21/96 at 14:47:03

Dispersal of internal thread handler resulted in the SYSI task being
only required in a multiprocessor system. It was replace by the MPCI
Receive Server. As a result, the CPU Table field for extra stack for
the SYSI task was changed to be extra stack for the MPCI Receive Server.

  • Property mode set to 100644
File size: 5.1 KB
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[ac7d5ef0]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>
[3a4ae6c]24#include <rtems/libio.h>
25
[ac7d5ef0]26#include <libcsupport.h>
27
[3a4ae6c]28#include <fcntl.h>
29
30#ifdef STACK_CHECKER_ON
[ac7d5ef0]31#include <stackchk.h>
[3a4ae6c]32#endif
[ac7d5ef0]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
[3a4ae6c]44char *rtems_progname;
45
[ac7d5ef0]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) &end;
56    if (heap_start & (CPU_ALIGNMENT-1))
57        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
58
59    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
60
[3a4ae6c]61    /*
62     *  Init the RTEMS libio facility to provide UNIX-like system
63     *  calls for use by newlib (ie: provide __open, __close, etc)
64     *  Uses malloc() to get area for the iops, so must be after malloc init
65     */
66
67    rtems_libio_init();
68
[ac7d5ef0]69    /*
70     * Set up for the libc handling.
71     */
72
73    if (BSP_Configuration.ticks_per_timeslice > 0)
74        libc_init(1);                /* reentrant if possible */
75    else
76        libc_init(0);                /* non-reentrant */
[3652ad35]77}
[ac7d5ef0]78
[3652ad35]79/*
80 *  Function:   bsp_pretasking_hook
81 *  Created:    95/03/10
82 *
83 *  Description:
84 *      BSP pretasking hook.  Called just before drivers are initialized.
85 *      Used to setup libc and install any BSP extensions.
86 *
87 *  NOTES:
88 *      Must not use libc (to do io) from here, since drivers are
89 *      not yet initialized.
90 *
91 */
92 
93void
94bsp_pretasking_hook(void)
95{
96    bsp_libc_init();
97 
98#ifdef STACK_CHECKER_ON
[ac7d5ef0]99    /*
100     *  Initialize the stack bounds checker
[3652ad35]101     *  We can either turn it on here or from the app.
[ac7d5ef0]102     */
[3652ad35]103 
[ac7d5ef0]104    Stack_check_Initialize();
105#endif
[3652ad35]106 
107#ifdef RTEMS_DEBUG
108    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
109#endif
[ac7d5ef0]110}
[3652ad35]111 
[ac7d5ef0]112
[3a4ae6c]113/*
114 * After drivers are setup, register some "filenames"
115 * and open stdin, stdout, stderr files
116 *
117 * Newlib will automatically associate the files with these
118 * (it hardcodes the numbers)
119 */
120 
121void
122bsp_postdriver_hook(void)
123{
124  int stdin_fd, stdout_fd, stderr_fd;
[9700578]125  int error_code;
126 
127  error_code = 'S' << 24 | 'T' << 16;
[3a4ae6c]128 
129  if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1)
[9700578]130    rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' );
[3a4ae6c]131 
132  if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
[9700578]133    rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' );
[3a4ae6c]134 
135  if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
[9700578]136    rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' );
[3a4ae6c]137 
138  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
[9700578]139    rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' );
[3a4ae6c]140}
141
142int main(
[ac7d5ef0]143  int argc,
144  char **argv,
145  char **environp
146)
147{
[3a4ae6c]148 
149  if ((argc > 0) && argv && argv[0])
150    rtems_progname = argv[0];
151  else
152    rtems_progname = "RTEMS";
153 
[ac7d5ef0]154  /*
155   *  FORCE documentation incorrectly states that the bus request
156   *  level is initialized to 3.  It is actually initialized by
157   *  FORCEbug to 0.
158   */
159
160  outport_byte( 0x00, 0x3f );      /* resets VMEbus request level */
161
162  /*
163   *  we do not use the pretasking_hook.
164   */
165
[3652ad35]166  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
[ac7d5ef0]167
[3652ad35]168  Cpu_table.predriver_hook = NULL;
[ac7d5ef0]169
[3a4ae6c]170  Cpu_table.postdriver_hook = bsp_postdriver_hook;
[ac7d5ef0]171
172  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
173
174  Cpu_table.do_zero_of_workspace = TRUE;
175
176  Cpu_table.interrupt_table_segment = get_ds();
177
178  Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table;
179
180  Cpu_table.interrupt_stack_size = 4096;
181
[8cbbe312]182  Cpu_table.extra_mpci_receive_server_stack = 0;
[ac7d5ef0]183
184  /*
185   *  Copy the table
186   */
187
188  BSP_Configuration = Configuration;
189
190  BSP_Configuration.work_space_start = (void *)
191     RAM_END - BSP_Configuration.work_space_size;
192
193  /*
194   * Add 1 region for Malloc in libc_low
195   */
196
197  BSP_Configuration.maximum_regions++;
198
199  /*
200   * Add 1 extension for newlib libc
201   */
202
203#ifdef RTEMS_NEWLIB
204    BSP_Configuration.maximum_extensions++;
205#endif
206
207  /*
208   * Add another extension if using the stack checker
209   */
210
211#ifdef STACK_CHECKER_ON
212    BSP_Configuration.maximum_extensions++;
213#endif
214
[3a4ae6c]215  /*
216   * Tell libio how many fd's we want and allow it to tweak config
217   */
218
219  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
220
[ac7d5ef0]221  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
222  /* does not return */
223  /* no cleanup necessary for Force CPU-386 */
224  return 0;
225}
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