source: rtems/c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c @ eba2e4f

4.104.114.84.95
Last change on this file since eba2e4f was eba2e4f, checked in by Joel Sherrill <joel.sherrill@…>, on Nov 1, 2000 at 9:19:23 PM

2000-11-01 Joel Sherrill <joel@…>

  • startup/bspstart.c: assoc.h, error.h, libio_.h, libio.h, and libcsupport.h moved from libc to lib/include/rtems and now must be referenced as <rtems/XXX.h>. Header file order was cleaned up while doing this.
  • Property mode set to 100644
File size: 2.6 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 <string.h>
18
19#include <bsp.h>
20#include <rtems/libio.h>
21#include <rtems/libcsupport.h>
22 
23/*
24 *  The original table from the application and our copy of it with
25 *  some changes.
26 */
27
28extern rtems_configuration_table Configuration;
29
30rtems_configuration_table  BSP_Configuration;
31
32rtems_cpu_table Cpu_table;
33
34char *rtems_progname;
35
36/*
37 *  Use the shared implementations of the following routines
38 */
39 
40void bsp_postdriver_hook(void);
41void bsp_libc_init( void *, unsigned32, int );
42
43/*
44 *  Function:   bsp_pretasking_hook
45 *  Created:    95/03/10
46 *
47 *  Description:
48 *      BSP pretasking hook.  Called just before drivers are initialized.
49 *      Used to setup libc and install any BSP extensions.
50 *
51 *  NOTES:
52 *      Must not use libc (to do io) from here, since drivers are
53 *      not yet initialized.
54 *
55 */
56 
57void bsp_pretasking_hook(void)
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    bsp_libc_init((void *) heap_start, 64 * 1024, 0);
67
68#ifdef RTEMS_DEBUG
69    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
70#endif
71}
72 
73/*
74 *  bsp_start
75 *
76 *  This routine does the bulk of the system initialization.
77 */
78
79void bsp_start( void )
80{
81  /*
82   *  Allocate the memory for the RTEMS Work Space.  This can come from
83   *  a variety of places: hard coded address, malloc'ed from outside
84   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
85   *  typically done by stock BSPs) by subtracting the required amount
86   *  of work space from the last physical address on the CPU board.
87   */
88
89  /*
90   *  Need to "allocate" the memory for the RTEMS Workspace and
91   *  tell the RTEMS configuration where it is.  This memory is
92   *  not malloc'ed.  It is just "pulled from the air".
93   */
94
95  BSP_Configuration.work_space_start = (void *) 0;
96
97  /*
98   *  initialize the CPU table for this BSP
99   */
100
101  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
102  Cpu_table.postdriver_hook = bsp_postdriver_hook;
103  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
104}
Note: See TracBrowser for help on using the repository browser.