source: rtems/c/src/lib/libbsp/m68k/mvme136/startup/bspstart.c @ c244a9ee

4.104.114.84.9
Last change on this file since c244a9ee was c244a9ee, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 14, 1998 at 9:32:12 PM

Stack checker extension now accounted for in confdefs.h

  • Property mode set to 100644
File size: 4.1 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#include <zilog/z8036.h>
28
29#include <string.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 int end;
54    rtems_unsigned32        heap_start;
55
56    heap_start = (rtems_unsigned32) &end;
57    if (heap_start & (CPU_ALIGNMENT-1))
58        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
59
60    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
61
62    /*
63     *  Init the RTEMS libio facility to provide UNIX-like system
64     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
65     *  Uses malloc() to get area for the iops, so must be after malloc init
66     */
67
68    rtems_libio_init();
69
70    /*
71     * Set up for the libc handling.
72     */
73
74    if (BSP_Configuration.ticks_per_timeslice > 0)
75        libc_init(1);                /* reentrant if possible */
76    else
77        libc_init(0);                /* non-reentrant */
78}
79
80/*
81 *  Function:   bsp_pretasking_hook
82 *  Created:    95/03/10
83 *
84 *  Description:
85 *      BSP pretasking hook.  Called just before drivers are initialized.
86 *      Used to setup libc and install any BSP extensions.
87 *
88 *  NOTES:
89 *      Must not use libc (to do io) from here, since drivers are
90 *      not yet initialized.
91 *
92 */
93 
94void
95bsp_pretasking_hook(void)
96{
97    bsp_libc_init();
98 
99#ifdef STACK_CHECKER_ON
100    /*
101     *  Initialize the stack bounds checker
102     *  We can either turn it on here or from the app.
103     */
104 
105    Stack_check_Initialize();
106#endif
107 
108#ifdef RTEMS_DEBUG
109    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
110#endif
111}
112 
113/*
114 *  Use the shared bsp_postdriver_hook() implementation
115 */
116 
117void bsp_postdriver_hook(void);
118
119void bsp_start( void )
120{
121  m68k_isr_entry *monitors_vector_table;
122  int             index;
123
124  monitors_vector_table = (m68k_isr_entry *)0;   /* 135Bug 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  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
134
135  m68k_set_vbr( &M68Kvec );
136
137  (*(rtems_unsigned8 *)0xfffb0067) = 0x7f; /* make VME access round-robin */
138
139  m68k_enable_caching();
140
141  /*
142   *  we only use a hook to get the C library initialized.
143   */
144
145  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
146
147  Cpu_table.predriver_hook = NULL;
148
149  Cpu_table.postdriver_hook = bsp_postdriver_hook;
150
151  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
152
153  Cpu_table.do_zero_of_workspace = TRUE;
154
155  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
156
157  Cpu_table.interrupt_stack_size = 4096;
158
159  Cpu_table.extra_mpci_receive_server_stack = 0;
160
161  /*
162   *  Copy the table
163   */
164
165  BSP_Configuration = Configuration;
166
167  BSP_Configuration.work_space_start = (void *)
168     (RAM_END - BSP_Configuration.work_space_size);
169
170  /*
171   * Tell libio how many fd's we want and allow it to tweak config
172   */
173
174  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
175}
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