source: rtems/c/src/lib/libbsp/m68k/idp/startup/bspstart.c @ c244a9ee

4.104.114.84.9
Last change on this file since c244a9ee was c244a9ee, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 14, 1998 at 9:32:12 PM

Stack checker extension now accounted for in confdefs.h

  • Property mode set to 100644
File size: 4.6 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 *  $Id$
21 */
22
23#include <bsp.h>
24#include <rtems/libio.h>
25 
26#include <libcsupport.h>
27 
28#include <string.h>
29 
30#ifdef STACK_CHECKER_ON
31#include <stackchk.h>
32#endif
33
34unsigned char *duart_base;
35extern struct duart_regs duart_info;
36
37#define DELAY 5000
38
39void led_putnum();
40
41/*
42 *  The original table from the application and our copy of it with
43 *  some changes.
44 */
45 
46extern rtems_configuration_table  Configuration;
47rtems_configuration_table         BSP_Configuration;
48
49rtems_cpu_table Cpu_table;
50 
51char *rtems_progname;
52
53/*      Initialize whatever libc we are using
54 *      called from postdriver hook
55 */
56 
57void bsp_libc_init()
58{
59    extern int end;
60    rtems_unsigned32        heap_start;
61 
62    heap_start = (rtems_unsigned32) &end;
63    if (heap_start & (CPU_ALIGNMENT-1))
64        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
65 
66        /* Create 64 KByte memory region for RTEMS executive */
67    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
68
69    /*
70     *  Init the RTEMS libio facility to provide UNIX-like system
71     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
72     *  Uses malloc() to get area for the iops, so must be after malloc init
73     */
74
75    rtems_libio_init();
76 
77    /*
78     * Set up for the libc handling.
79     */
80 
81    if (BSP_Configuration.ticks_per_timeslice > 0)
82        libc_init(1);                /* reentrant if possible */
83        else
84        libc_init(0);                /* non-reentrant */
85}
86
87/*
88 *  Function:   bsp_pretasking_hook
89 *  Created:    95/03/10
90 *
91 *  Description:
92 *      BSP pretasking hook.  Called just before drivers are initialized.
93 *      Used to setup libc and install any BSP extensions.
94 *
95 *  NOTES:
96 *      Must not use libc (to do io) from here, since drivers are
97 *      not yet initialized.
98 *
99 */
100 
101void
102bsp_pretasking_hook(void)
103{
104    bsp_libc_init();
105 
106#ifdef STACK_CHECKER_ON
107    /*
108     *  Initialize the stack bounds checker
109     *  We can either turn it on here or from the app.
110     */
111 
112    Stack_check_Initialize();
113#endif
114 
115#ifdef RTEMS_DEBUG
116    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
117#endif
118}
119 
120
121/*
122 *  Use the shared bsp_postdriver_hook() implementation
123 */
124 
125void bsp_postdriver_hook(void);
126
127void bsp_start( void )
128{
129  m68k_isr_entry *monitors_vector_table;
130  int             index;
131
132  duart_base = (unsigned char *)DUART_ADDR;
133
134  /*
135   *  Set the VBR here to the monitor's default.
136   */
137
138  monitors_vector_table = (m68k_isr_entry *)0;
139   /* This is where you set vector base register = 0 */
140  m68k_set_vbr( monitors_vector_table );
141
142  /* The vector interrupt table for the 680x0 is in appendix B-2
143         of the M68000 Family Programmer's reference table */
144  for ( index=2 ; index<=255 ; index++ )
145    M68Kvec[ index ] = monitors_vector_table[ 32 ];
146
147
148  M68Kvec[  2 ] = monitors_vector_table[  2 ];   /* bus error vector */
149  M68Kvec[  4 ] = monitors_vector_table[  4 ];   /* breakpoints vector */
150  M68Kvec[  9 ] = monitors_vector_table[  9 ];   /* trace vector */
151
152  /*
153   *  Set the VBR here if you do not want to use the monitor's vector table.
154   */
155
156  m68k_set_vbr( &M68Kvec );
157
158  m68k_enable_caching();
159
160  /*
161   *  we only use a hook to get the C library initialized.
162   */
163 
164  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
165
166  Cpu_table.predriver_hook = NULL;
167
168  Cpu_table.postdriver_hook = bsp_postdriver_hook;
169
170  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
171
172  Cpu_table.do_zero_of_workspace = TRUE;
173 
174  Cpu_table.interrupt_vector_table = (m68k_isr_entry *) &M68Kvec;
175 
176  Cpu_table.interrupt_stack_size = 4096;
177
178  Cpu_table.extra_mpci_receive_server_stack = 0;
179
180  /*
181   *  Copy the table
182   */
183 
184  BSP_Configuration = Configuration;
185 
186  BSP_Configuration.work_space_start = (void *)
187     (RAM_END - BSP_Configuration.work_space_size);
188 
189  /*
190   * Tell libio how many fd's we want and allow it to tweak config
191   */
192
193  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
194
195/*  led_putnum('e'); * for debugging purposes only */
196
197  /* Clock_exit is done as an atexit() function */
198}
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