source: rtems/c/src/lib/libbsp/m68k/efi68k/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: 4.0 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#include <libcsupport.h>
26
27#include <string.h>
28 
29#ifdef STACK_CHECKER_ON
30#include <stackchk.h>
31#endif
32 
33/*
34 *  The original table from the application and our copy of it with
35 *  some changes.
36 */
37
38extern rtems_configuration_table  Configuration;
39rtems_configuration_table         BSP_Configuration;
40
41rtems_cpu_table Cpu_table;
42
43char *rtems_progname;
44 
45rtems_unsigned32 Timer_interrupts;
46
47extern void set_debug_traps(void);
48extern void breakpoint(void);
49
50/*      Initialize whatever libc we are using
51 *      called from postdriver hook
52 */
53
54void bsp_libc_init()
55{
56/*   extern int end; */
57  rtems_unsigned32        heap_start;
58 
59  heap_start = (rtems_unsigned32) BSP_Configuration.work_space_start +
60               (rtems_unsigned32) BSP_Configuration.work_space_size;
61  if (heap_start & (CPU_ALIGNMENT-1))
62    heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
63 
64  if (heap_start > (rtems_unsigned32) RAM_END) {
65    /* rtems_fatal_error_occurred can not be used before initalization */
66    RAW_PUTS("\n\rRTEMS: Out of memory.\n\r");
67    RAW_PUTS("RTEMS:    Check RAM_END and the size of the work space.\n\r");
68  }
69
70  RTEMS_Malloc_Initialize((void *) heap_start, 
71                          (RAM_END - heap_start), 0);
72   
73  /*
74   *  Init the RTEMS libio facility to provide UNIX-like system
75   *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
76   *  Uses malloc() to get area for the iops, so must be after malloc init
77   */
78
79  rtems_libio_init();
80
81  /*
82   * Set up for the libc handling.
83   */
84 
85  if (BSP_Configuration.ticks_per_timeslice > 0)
86    libc_init(1);                /* reentrant if possible */
87  else
88    libc_init(0);                /* non-reentrant */
89}
90 
91/*
92 *  Function:   bsp_pretasking_hook
93 *  Created:    95/03/10
94 *
95 *  Description:
96 *      BSP pretasking hook.  Called just before drivers are initialized.
97 *      Used to setup libc and install any BSP extensions.
98 *
99 *  NOTES:
100 *      Must not use libc (to do io) from here, since drivers are
101 *      not yet initialized.
102 *
103 */
104 
105void
106bsp_pretasking_hook(void)
107{
108    bsp_libc_init();
109 
110#ifdef STACK_CHECKER_ON
111    /*
112     *  Initialize the stack bounds checker
113     *  We can either turn it on here or from the app.
114     */
115 
116    Stack_check_Initialize();
117#endif
118 
119#ifdef RTEMS_DEBUG
120    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
121#endif
122}
123 
124 
125/*
126 *  Use the shared bsp_postdriver_hook() implementation
127 */
128 
129void bsp_postdriver_hook(void);
130
131
132void bsp_start( void )
133{
134  void           *vbr;
135
136/*   set_debug_traps();    */
137/*   breakpoint(); */
138
139  /*
140   *  we only use a hook to get the C library initialized.
141   */
142
143  Cpu_table.pretasking_hook = bsp_pretasking_hook;
144 
145  Cpu_table.predriver_hook = NULL;
146 
147  Cpu_table.postdriver_hook = bsp_postdriver_hook;
148
149  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
150
151  Cpu_table.do_zero_of_workspace = TRUE;
152
153  m68k_get_vbr( vbr );
154  Cpu_table.interrupt_vector_table = vbr;
155
156  Cpu_table.interrupt_stack_size = 0;
157
158  Cpu_table.extra_mpci_receive_server_stack = 0;
159
160  /*
161   *  Copy the table
162   */
163
164  BSP_Configuration = Configuration;
165
166  BSP_Configuration.work_space_start = (void *)
167    (((unsigned int)_end + STACK_SIZE + 0x100) & 0xffffff00);
168
169  /*
170   * Tell libio how many fd's we want and allow it to tweak config
171   */
172
173  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
174
175  /* Clock_exit is done as an atexit() function */
176}
177
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