source: rtems/c/src/lib/libbsp/m68k/gen68360/startup/bspstart.c @ 9b64c2d5

4.104.114.84.9
Last change on this file since 9b64c2d5 was 9b64c2d5, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 15, 1998 at 12:10:03 AM

Per suggestion from Eric Norum, went from one initial extension set
to multiple. This lets the stack check extension be installed
at system initialization time and avoids the BSP having to
even know about its existence.

  • 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 
26#include <libcsupport.h>
27 
28#include <string.h>
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/*      Initialize whatever libc we are using
43 *      called from postdriver hook
44 */
45
46void bsp_libc_init()
47{
48    extern void *_HeapStart;
49    extern rtems_unsigned32 _HeapSize;
50
51    /*
52     *  The last parameter to RTEMS_Malloc_Initialize is the "chunk"
53     *  size which a multiple of will be requested on each sbrk()
54     *  call by malloc().  A value of 0 indicates that sbrk() should
55     *  not be called to extend the heap.
56     */
57
58    RTEMS_Malloc_Initialize(&_HeapStart, _HeapSize, 0);
59
60    /*
61     *  Init the RTEMS libio facility to provide UNIX-like system
62     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
63     *  Uses malloc() to get area for the iops, so must be after malloc init
64     */
65
66    rtems_libio_init();
67
68    /*
69     * Set up for the libc handling.
70     */
71
72    if (BSP_Configuration.ticks_per_timeslice > 0)
73        libc_init(1);                /* reentrant if possible */
74    else
75        libc_init(0);                /* non-reentrant */
76}
77
78/*
79 *  Function:   bsp_pretasking_hook
80 *  Created:    95/03/10
81 *
82 *  Description:
83 *      BSP pretasking hook.  Called just before drivers are initialized.
84 *      Used to setup libc and install any BSP extensions.
85 *
86 *  NOTES:
87 *      Must not use libc (to do io) from here, since drivers are
88 *      not yet initialized.
89 *
90 */
91 
92void
93bsp_pretasking_hook(void)
94{
95    bsp_libc_init();
96 
97#ifdef RTEMS_DEBUG
98    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
99#endif
100}
101 
102
103/*
104 *  Use the shared bsp_postdriver_hook() implementation
105 */
106 
107void bsp_postdriver_hook(void);
108
109void bsp_start( void )
110{
111  extern void *_WorkspaceBase;
112
113  /*
114   *  Allocate the memory for the RTEMS Work Space.  This can come from
115   *  a variety of places: hard coded address, malloc'ed from outside
116   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
117   *  typically done by stock BSPs) by subtracting the required amount
118   *  of work space from the last physical address on the CPU board.
119   */
120#if 0
121  Cpu_table.interrupt_vector_table = (mc68000_isr *) 0/*&M68Kvec*/;
122#endif
123
124
125  /*
126   *  Copy the Configuration Table .. so we can change it
127   */
128
129  BSP_Configuration = Configuration;
130
131  /*
132   * Tell libio how many fd's we want and allow it to tweak config
133   */
134
135  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
136
137  /*
138   *  Need to "allocate" the memory for the RTEMS Workspace and
139   *  tell the RTEMS configuration where it is.  This memory is
140   *  not malloc'ed.  It is just "pulled from the air".
141   */
142
143  BSP_Configuration.work_space_start = (void *)&_WorkspaceBase;
144
145  /*
146   *  initialize the CPU table for this BSP
147   */
148
149  /*
150   *  we do not use the pretasking_hook
151   */
152
153  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
154
155  Cpu_table.predriver_hook = NULL;
156
157  Cpu_table.postdriver_hook = bsp_postdriver_hook;
158
159  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
160
161  Cpu_table.do_zero_of_workspace = TRUE;
162
163  Cpu_table.interrupt_stack_size = 4096;
164
165  Cpu_table.extra_mpci_receive_server_stack = 0;
166
167  /*
168   *  Don't forget the other CPU Table entries.
169   */
170}
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