source: rtems/c/src/lib/libbsp/m68k/mvme136/startup/bspstart.c @ 7068e246

4.104.114.84.95
Last change on this file since 7068e246 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on Nov 17, 1999 at 5:51:34 PM

Updated copyright notice.

  • Property mode set to 100644
File size: 2.9 KB
Line 
1/*
2 *  This routine starts the application.  It includes application,
3 *  board, and monitor specific initialization and configuration.
4 *  The generic CPU dependent initialization has been performed
5 *  before this routine is invoked.
6 *
7 *  COPYRIGHT (c) 1989-1999.
8 *  On-Line Applications Research Corporation (OAR).
9 *
10 *  The license and distribution terms for this file may be
11 *  found in the file LICENSE in this distribution or at
12 *  http://www.OARcorp.com/rtems/license.html.
13 *
14 *  $Id$
15 */
16
17#include <bsp.h>
18#include <rtems/libio.h>
19
20#include <libcsupport.h>
21#include <zilog/z8036.h>
22
23#include <string.h>
24
25/*
26 *  The original table from the application and our copy of it with
27 *  some changes.
28 */
29
30extern rtems_configuration_table  Configuration;
31rtems_configuration_table         BSP_Configuration;
32
33rtems_cpu_table Cpu_table;
34
35char *rtems_progname;
36
37/*
38 *  Use the shared implementations of the following routines
39 */
40 
41void bsp_postdriver_hook(void);
42void bsp_libc_init( void *, unsigned32, int );
43
44/*
45 *  Function:   bsp_pretasking_hook
46 *  Created:    95/03/10
47 *
48 *  Description:
49 *      BSP pretasking hook.  Called just before drivers are initialized.
50 *      Used to setup libc and install any BSP extensions.
51 *
52 *  NOTES:
53 *      Must not use libc (to do io) from here, since drivers are
54 *      not yet initialized.
55 *
56 */
57 
58void bsp_pretasking_hook(void)
59{
60    extern int end;
61    rtems_unsigned32        heap_start;
62
63    heap_start = (rtems_unsigned32) &end;
64    if (heap_start & (CPU_ALIGNMENT-1))
65        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
66
67    bsp_libc_init((void *) heap_start, 64 * 1024, 0);
68
69 
70#ifdef RTEMS_DEBUG
71    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
72#endif
73}
74
75/*
76 *  bsp_start
77 *
78 *  This routine does the bulk of the system initialization.
79 */
80
81void bsp_start( void )
82{
83  m68k_isr_entry *monitors_vector_table;
84  int             index;
85
86  monitors_vector_table = (m68k_isr_entry *)0;   /* 135Bug Vectors are at 0 */
87  m68k_set_vbr( monitors_vector_table );
88
89  for ( index=2 ; index<=255 ; index++ )
90    M68Kvec[ index ] = monitors_vector_table[ 32 ];
91
92  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
93  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
94  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
95  M68Kvec[ 47 ] = monitors_vector_table[ 47 ];   /* system call vector */
96
97  m68k_set_vbr( &M68Kvec );
98
99  (*(rtems_unsigned8 *)0xfffb0067) = 0x7f; /* make VME access round-robin */
100
101  m68k_enable_caching();
102
103  /*
104   *  we only use a hook to get the C library initialized.
105   */
106
107  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
108  Cpu_table.postdriver_hook = bsp_postdriver_hook;
109  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
110  Cpu_table.interrupt_stack_size = 4096;
111
112  BSP_Configuration.work_space_start = (void *)
113     (RAM_END - BSP_Configuration.work_space_size);
114
115}
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