source: rtems/c/src/lib/libbsp/m68k/mvme136/startup/bspstart.c @ 497428a2

4.104.114.84.95
Last change on this file since 497428a2 was 497428a2, checked in by Joel Sherrill <joel.sherrill@…>, on May 30, 1995 at 7:42:36 PM

cpu/*types.h added and successfully compiled.
IDLE task priority changed from 0 to 255 during initialization.

  • Property mode set to 100644
File size: 3.6 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 <rtems.h>
24#include <bsp.h>
25#include <libcsupport.h>
26#include <z8036.h>
27
28#include "stackchk.h"
29
30/*
31 *  The original table from the application and our copy of it with
32 *  some changes.
33 */
34
35extern rtems_configuration_table  Configuration;
36rtems_configuration_table         BSP_Configuration;
37
38rtems_cpu_table Cpu_table;
39
40/*      Initialize whatever libc we are using
41 *      called from postdriver hook
42 */
43
44void bsp_libc_init()
45{
46    extern int end;
47    rtems_unsigned32        heap_start;
48
49    heap_start = (rtems_unsigned32) &end;
50    if (heap_start & (CPU_ALIGNMENT-1))
51        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
52
53    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
54
55    /*
56     * Set up for the libc handling.
57     */
58
59    if (BSP_Configuration.ticks_per_timeslice > 0)
60        libc_init(1);                /* reentrant if possible */
61    else
62        libc_init(0);                /* non-reentrant */
63
64    /*
65     *  Initialize the stack bounds checker
66     */
67
68#ifdef STACK_CHECKER_ON
69    Stack_check_Initialize();
70#endif
71}
72
73int bsp_start(
74  int argc,
75  char **argv,
76  char **environp
77)
78{
79  m68k_isr_entry *monitors_vector_table;
80  int             index;
81
82  monitors_vector_table = (m68k_isr_entry *)0;   /* 135Bug Vectors are at 0 */
83  m68k_set_vbr( monitors_vector_table );
84
85  for ( index=2 ; index<=255 ; index++ )
86    M68Kvec[ index ] = monitors_vector_table[ 32 ];
87
88  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
89  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
90  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
91  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
92
93  m68k_set_vbr( &M68Kvec );
94
95  (*(rtems_unsigned8 *)0xfffb0067) = 0x7f; /* make VME access round-robin */
96
97  m68k_enable_caching();
98
99  /*
100   *  we only use a hook to get the C library initialized.
101   */
102
103  Cpu_table.pretasking_hook = NULL;
104
105  Cpu_table.predriver_hook = bsp_libc_init;  /* RTEMS resources available */
106
107  Cpu_table.postdriver_hook = NULL;
108
109  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
110
111  Cpu_table.do_zero_of_workspace = TRUE;
112
113  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
114
115  Cpu_table.interrupt_stack_size = 4096;
116
117  Cpu_table.extra_system_initialization_stack = 0;
118
119  /*
120   *  Copy the table
121   */
122
123  BSP_Configuration = Configuration;
124
125  BSP_Configuration.work_space_start = (void *)
126     (RAM_END - BSP_Configuration.work_space_size);
127
128  /*
129   * Add 1 region for the RTEMS Malloc
130   */
131
132  BSP_Configuration.maximum_regions++;
133
134  /*
135   * Add 1 extension for newlib libc
136   */
137
138#ifdef RTEMS_NEWLIB
139    BSP_Configuration.maximum_extensions++;
140#endif
141
142  /*
143   * Add another extension if using the stack checker
144   */
145
146#ifdef STACK_CHECKER_ON
147    BSP_Configuration.maximum_extensions++;
148#endif
149
150  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
151  /* does not return */
152
153  bsp_cleanup();
154
155  return 0;
156}
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