source: rtems/c/src/lib/libbsp/m68k/dmv152/startup/bspstart.c @ 8f95b5f

4.104.114.84.95
Last change on this file since 8f95b5f was 8f95b5f, checked in by Joel Sherrill <joel.sherrill@…>, on Mar 30, 1998 at 2:01:19 PM

Moved bsp_postdriver_hook() to a shared file and made it a common
component.

  • Property mode set to 100644
File size: 4.8 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) 1989-1998.
13 *  On-Line Applications Research Corporation (OAR).
14 *  Copyright assigned to U.S. Government, 1994.
15 *
16 *  The license and distribution terms for this file may be
17 *  found in the file LICENSE in this distribution or at
18 *  http://www.OARcorp.com/rtems/license.html.
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 
30#ifdef STACK_CHECKER_ON
31#include <stackchk.h>
32#endif
33/*
34 *  The original table from the application and our copy of it with
35 *  some changes.
36 */
37
38extern rtems_configuration_table  Configuration;
39rtems_configuration_table         BSP_Configuration;
40
41rtems_cpu_table Cpu_table;
42
43char *rtems_progname;
44
45/*      Initialize whatever libc we are using
46 *      called from postdriver hook
47 */
48
49void bsp_libc_init()
50{
51    extern int end;
52    rtems_unsigned32        heap_start;
53
54    heap_start = (rtems_unsigned32) &end;
55    if (heap_start & (CPU_ALIGNMENT-1))
56        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
57
58    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
59
60    /*
61     *  Init the RTEMS libio facility to provide UNIX-like system
62     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
63     *  Uses malloc() to get area for the iops, so must be after malloc init
64     */
65
66    rtems_libio_init();
67
68    /*
69     * Set up for the libc handling.
70     */
71
72    if (BSP_Configuration.ticks_per_timeslice > 0)
73        libc_init(1);                /* reentrant if possible */
74    else
75        libc_init(0);                /* non-reentrant */
76}
77
78/*
79 *  Function:   bsp_pretasking_hook
80 *  Created:    95/03/10
81 *
82 *  Description:
83 *      BSP pretasking hook.  Called just before drivers are initialized.
84 *      Used to setup libc and install any BSP extensions.
85 *
86 *  NOTES:
87 *      Must not use libc (to do io) from here, since drivers are
88 *      not yet initialized.
89 *
90 */
91 
92void
93bsp_pretasking_hook(void)
94{
95    bsp_libc_init();
96 
97#ifdef STACK_CHECKER_ON
98    /*
99     *  Initialize the stack bounds checker
100     *  We can either turn it on here or from the app.
101     */
102 
103    Stack_check_Initialize();
104#endif
105 
106#ifdef RTEMS_DEBUG
107    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
108#endif
109}
110 
111
112/*
113 *  Use the shared bsp_postdriver_hook() implementation
114 */
115 
116void bsp_postdriver_hook(void);
117
118void bsp_start( void )
119{
120  m68k_isr_entry *monitors_vector_table;
121  int             index;
122  void           *vbr;
123
124  monitors_vector_table = (m68k_isr_entry *)0;   /* Monitor Vectors are at 0 */
125  m68k_set_vbr( monitors_vector_table );
126
127  for ( index=2 ; index<=255 ; index++ )
128    M68Kvec[ index ] = monitors_vector_table[ 32 ];
129
130  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
131  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
132  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
133
134  /*
135   *  Uncommenting this seems to confuse/break the monitor on this board.
136   *  It probably assumes the vector table is at 0.
137   */
138
139  /* m68k_set_vbr( &M68Kvec ); */
140
141  /*
142   *  Adjust the VMEbus mode to round-robin.
143   */
144
145  /*
146   *  This is only apparent with the shared memory driver which has not
147   *  yet been supported on this target.
148   */
149
150  m68k_enable_caching();
151
152  /*
153   *  we only use a hook to get the C library initialized.
154   */
155
156  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
157
158  Cpu_table.predriver_hook = NULL;
159
160  Cpu_table.postdriver_hook = bsp_postdriver_hook;
161
162  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
163
164  Cpu_table.do_zero_of_workspace = TRUE;
165
166  m68k_get_vbr( vbr );
167  Cpu_table.interrupt_vector_table = vbr;
168
169  Cpu_table.interrupt_stack_size = 4096;
170
171  Cpu_table.extra_mpci_receive_server_stack = 0;
172
173  /*
174   *  Copy the table
175   */
176
177  BSP_Configuration = Configuration;
178
179  BSP_Configuration.work_space_start = (void *)
180     (RAM_END - BSP_Configuration.work_space_size);
181
182  /*
183   * Add 1 region for Malloc in libc_low
184   */
185
186  BSP_Configuration.RTEMS_api_configuration->maximum_regions++;
187
188  /*
189   *  Account for the console's resources
190   */
191
192  console_reserve_resources( &BSP_Configuration );
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  /* Clock_exit is done as an atexit() function */
217}
Note: See TracBrowser for help on using the repository browser.