source: rtems/c/src/lib/libbsp/m68k/mvme147/startup/bspstart.c @ 9b64c2d5

4.104.114.84.9
Last change on this file since 9b64c2d5 was 9b64c2d5, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 15, 1998 at 12:10:03 AM

Per suggestion from Eric Norum, went from one initial extension set
to multiple. This lets the stack check extension be installed
at system initialization time and avoids the BSP having to
even know about its existence.

  • 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 *  MVME147 port for TNI - Telecom Bretagne
21 *  by Dominique LE CAMPION (Dominique.LECAMPION@enst-bretagne.fr)
22 *  May 1996
23 *
24 *  $Id$
25 */
26
27#include <bsp.h>
28#include <rtems/libio.h>
29
30#include <libcsupport.h>
31
32#include <string.h>
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
44char *rtems_progname;
45
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
61    /*
62     *  Init the RTEMS libio facility to provide UNIX-like system
63     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
64     *  Uses malloc() to get area for the iops, so must be after malloc init
65     */
66
67    rtems_libio_init();
68
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 */
77}
78
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 RTEMS_DEBUG
99    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
100#endif
101}
102 
103
104/*
105 *  Use the shared bsp_postdriver_hook() implementation
106 */
107 
108void bsp_postdriver_hook(void);
109
110
111void bsp_start( void )
112{
113  m68k_isr_entry *monitors_vector_table;
114  int             index;
115
116  monitors_vector_table = (m68k_isr_entry *)0;   /* 135Bug Vectors are at 0 */
117  m68k_set_vbr( monitors_vector_table );
118
119  for ( index=2 ; index<=255 ; index++ )
120    M68Kvec[ index ] = monitors_vector_table[ 32 ];
121
122  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
123  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
124  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
125  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
126
127  m68k_set_vbr( &M68Kvec );
128
129  pcc->int_base_vector = PCC_BASE_VECTOR; /* Set the PCC int vectors base */
130
131  (*(rtems_unsigned8 *)0xfffe2001) = 0x08; 
132      /* make VME access round-robin */
133
134  m68k_enable_caching();
135
136  /*
137   *  we only use a hook to get the C library initialized.
138   */
139
140  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
141
142  Cpu_table.predriver_hook = NULL;
143
144  Cpu_table.postdriver_hook = bsp_postdriver_hook;
145
146  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
147
148  Cpu_table.do_zero_of_workspace = TRUE;
149
150  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
151
152  Cpu_table.interrupt_stack_size = 4096;
153
154  Cpu_table.extra_mpci_receive_server_stack = 0;
155
156  /*
157   *  Copy the table
158   */
159
160  BSP_Configuration = Configuration;
161
162  BSP_Configuration.work_space_start = (void *)
163     (RAM_END - BSP_Configuration.work_space_size);
164
165  /*
166   * Tell libio how many fd's we want and allow it to tweak config
167   */
168
169  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
170}
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