source: rtems/c/src/lib/libbsp/m68k/ods68302/startup/bspstart.c @ 7068e246

4.104.114.84.95
Last change on this file since 7068e246 was 08311cc3, checked in by Joel Sherrill <joel.sherrill@…>, on Nov 17, 1999 at 5:51:34 PM

Updated copyright notice.

  • 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 
24/*
25 *  The original table from the application and our copy of it with
26 *  some changes.
27 */
28
29extern rtems_configuration_table Configuration;
30rtems_configuration_table  BSP_Configuration;
31
32rtems_cpu_table Cpu_table;
33rtems_interrupt_level bsp_isr_level;
34
35char *rtems_progname;
36
37/*
38 *  Use the shared implementations of the following routines
39 */
40 
41void bsp_postdriver_hook(void);
42void bsp_libc_init( void *, unsigned32, int );
43
44/*
45 *  Function:   bsp_pretasking_hook
46 *  Created:    95/03/10
47 *
48 *  Description:
49 *      BSP pretasking hook.  Called just before drivers are initialized.
50 *      Used to setup libc and install any BSP extensions.
51 *
52 *  NOTES:
53 *      Must not use libc (to do io) from here, since drivers are
54 *      not yet initialized.
55 *
56 */
57 
58void bsp_pretasking_hook(void)
59{
60    extern int end;
61    rtems_unsigned32        heap_start;
62
63    heap_start = (rtems_unsigned32) &end;
64    if (heap_start & (CPU_ALIGNMENT-1))
65        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
66
67    bsp_libc_init((void *) heap_start, 64 * 1024, 0);
68 
69#ifdef RTEMS_DEBUG
70    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
71#endif
72}
73 
74/*
75 *  bsp_start
76 *
77 *  This routine does the bulk of the system initialization.
78 */
79
80void bsp_start( void )
81{
82  /*
83   *  Allocate the memory for the RTEMS Work Space.  This can come from
84   *  a variety of places: hard coded address, malloc'ed from outside
85   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
86   *  typically done by stock BSPs) by subtracting the required amount
87   *  of work space from the last physical address on the CPU board.
88   */
89#if 0
90  Cpu_table.interrupt_vector_table = (mc68000_isr *) 0/*&M68Kvec*/;
91#endif
92
93  /*
94   *  Need to "allocate" the memory for the RTEMS Workspace and
95   *  tell the RTEMS configuration where it is.  This memory is
96   *  not malloc'ed.  It is just "pulled from the air".
97   */
98
99  BSP_Configuration.work_space_start = (void *)
100      (RAM_END - BSP_Configuration.work_space_size);
101
102  /*
103   *  initialize the CPU table for this BSP
104   */
105
106  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
107  Cpu_table.postdriver_hook = bsp_postdriver_hook;
108  Cpu_table.interrupt_stack_size = 4096;
109}
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