source: rtems/c/src/lib/libbsp/m68k/idp/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: 2.8 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 
24unsigned char *duart_base;
25extern struct duart_regs duart_info;
26
27#define DELAY 5000
28
29void led_putnum();
30
31/*
32 *  The original table from the application and our copy of it with
33 *  some changes.
34 */
35 
36extern rtems_configuration_table  Configuration;
37rtems_configuration_table         BSP_Configuration;
38
39rtems_cpu_table Cpu_table;
40 
41char *rtems_progname;
42
43/*
44 *  Use the shared implementations of the following routines
45 */
46 
47void bsp_postdriver_hook(void);
48void bsp_libc_init( void *, unsigned32, int );
49void bsp_pretasking_hook(void);               /* m68k version */
50
51/*
52 *  bsp_start
53 *
54 *  This routine does the bulk of the system initialization.
55 */
56
57void bsp_start( void )
58{
59  m68k_isr_entry *monitors_vector_table;
60  int             index;
61  extern void          *_WorkspaceBase;
62  extern void          *_RamSize;
63  extern unsigned long  _M68k_Ramsize;
64
65  _M68k_Ramsize = (unsigned long)&_RamSize;             /* RAM size set in linker script */
66
67  duart_base = (unsigned char *)DUART_ADDR;
68
69  /*
70   *  Set the VBR here to the monitor's default.
71   */
72
73  monitors_vector_table = (m68k_isr_entry *)0;
74   /* This is where you set vector base register = 0 */
75  m68k_set_vbr( monitors_vector_table );
76
77  /* The vector interrupt table for the 680x0 is in appendix B-2
78         of the M68000 Family Programmer's reference table */
79  for ( index=2 ; index<=255 ; index++ )
80    M68Kvec[ index ] = monitors_vector_table[ 32 ];
81
82
83  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
84  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
85  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
86
87  /*
88   *  Set the VBR here if you do not want to use the monitor's vector table.
89   */
90
91  m68k_set_vbr( &M68Kvec );
92
93  rtems_cache_enable_instruction();
94
95  /*
96   *  we only use a hook to get the C library initialized.
97   */
98 
99  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
100  Cpu_table.postdriver_hook = bsp_postdriver_hook;
101  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
102  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
103
104  BSP_Configuration.work_space_start = (void *) &_WorkspaceBase;
105 
106/*  led_putnum('e'); * for debugging purposes only */
107
108  /* Clock_exit is done as an atexit() function */
109}
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