source: rtems/c/src/lib/libbsp/m68k/idp/startup/bspstart.c @ c3db3251

4.104.114.84.9
Last change on this file since c3db3251 was c3db3251, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 4, 2003 at 6:51:54 PM

2003-09-04 Joel Sherrill <joel@…>

  • clock/ckinit.c, startup/bspstart.c, timer/timer.c, timer/timerisr.S: URL for license changed.
  • 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.rtems.com/license/LICENSE.
13 *
14 *  $Id$
15 */
16
17#include <string.h>
18
19#include <bsp.h>
20#include <rtems/libio.h>
21#include <rtems/libcsupport.h>
22 
23unsigned char *duart_base;
24extern struct duart_regs duart_info;
25
26#define DELAY 5000
27
28void led_putnum();
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 
40char *rtems_progname;
41
42/*
43 *  Use the shared implementations of the following routines
44 */
45 
46void bsp_postdriver_hook(void);
47void bsp_libc_init( void *, unsigned32, int );
48void bsp_pretasking_hook(void);               /* m68k version */
49
50/*
51 *  bsp_start
52 *
53 *  This routine does the bulk of the system initialization.
54 */
55
56void bsp_start( void )
57{
58  m68k_isr_entry *monitors_vector_table;
59  int             index;
60  extern void          *_WorkspaceBase;
61  extern void          *_RamSize;
62  extern unsigned long  _M68k_Ramsize;
63
64  _M68k_Ramsize = (unsigned long)&_RamSize;             /* RAM size set in linker script */
65
66  duart_base = (unsigned char *)DUART_ADDR;
67
68  /*
69   *  Set the VBR here to the monitor's default.
70   */
71
72  monitors_vector_table = (m68k_isr_entry *)0;
73   /* This is where you set vector base register = 0 */
74  m68k_set_vbr( monitors_vector_table );
75
76  /* The vector interrupt table for the 680x0 is in appendix B-2
77         of the M68000 Family Programmer's reference table */
78  for ( index=2 ; index<=255 ; index++ )
79    M68Kvec[ index ] = monitors_vector_table[ 32 ];
80
81
82  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
83  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
84  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
85
86  /*
87   *  Set the VBR here if you do not want to use the monitor's vector table.
88   */
89
90  m68k_set_vbr( &M68Kvec );
91
92  rtems_cache_enable_instruction();
93  rtems_cache_enable_data();
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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