source: rtems/c/src/lib/libbsp/m68k/dmv152/startup/bspstart.c @ 5e77d129

4.104.114.84.95
Last change on this file since 5e77d129 was 5e77d129, checked in by Joel Sherrill <joel.sherrill@…>, on Jun 14, 2000 at 8:32:44 PM

Patch from John Cotton <john.cotton@…> to correct cache
routine naming to follow RTEMS package/object.method rule.
This patch also eliminated calls to the obsolete routine
m68k_enable_caching.

  • Property mode set to 100644
File size: 2.7 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 
22#include <string.h>
23 
24/*
25 *  The original table from the application and our copy of it with
26 *  some changes.
27 */
28
29extern rtems_configuration_table  Configuration;
30rtems_configuration_table         BSP_Configuration;
31
32rtems_cpu_table Cpu_table;
33
34char *rtems_progname;
35
36/*
37 *  Use the shared implementations of the following routines
38 */
39 
40void bsp_postdriver_hook(void);
41void bsp_libc_init( void *, unsigned32, int );
42void bsp_pretasking_hook(void);               /* m68k version */
43 
44/*
45 *  bsp_start
46 *
47 *  This routine does the bulk of the system initialization.
48 */
49
50void bsp_start( void )
51{
52  m68k_isr_entry *monitors_vector_table;
53  int             index;
54  void           *vbr;
55  extern void    *_WorkspaceBase;
56  extern void    *_RamSize;
57  extern unsigned long _M68k_Ramsize;
58
59  _M68k_Ramsize = (unsigned long)&_RamSize;             /* RAM size set in linker script */
60
61  monitors_vector_table = (m68k_isr_entry *)0;   /* Monitor Vectors are at 0 */
62  m68k_set_vbr( monitors_vector_table );
63
64  for ( index=2 ; index<=255 ; index++ )
65    M68Kvec[ index ] = monitors_vector_table[ 32 ];
66
67  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
68  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
69  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
70
71  /*
72   *  Uncommenting this seems to confuse/break the monitor on this board.
73   *  It probably assumes the vector table is at 0.
74   */
75
76  /* m68k_set_vbr( &M68Kvec ); */
77
78  /*
79   *  Adjust the VMEbus mode to round-robin.
80   */
81
82  /*
83   *  This is only apparent with the shared memory driver which has not
84   *  yet been supported on this target.
85   */
86
87  rtems_cache_enable_instruction();
88
89  /*
90   *  we only use a hook to get the C library initialized.
91   */
92
93  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
94  Cpu_table.postdriver_hook = bsp_postdriver_hook;
95  Cpu_table.do_zero_of_workspace = TRUE;
96  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
97
98  m68k_get_vbr( vbr );
99  Cpu_table.interrupt_vector_table = vbr;
100
101  BSP_Configuration.work_space_start = (void *) &_WorkspaceBase;
102
103  /* Clock_exit is done as an atexit() function */
104}
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