source: rtems/c/src/lib/libbsp/i386/ts_386ex/startup/bspstart.c @ 3299388d

4.104.114.84.95
Last change on this file since 3299388d was e61df10, checked in by Joel Sherrill <joel.sherrill@…>, on Sep 4, 2003 at 6:51:28 PM

2003-09-04 Joel Sherrill <joel@…>

  • clock/ckinit.c, clock/rtc.c, console/console.c, include/bsp.h, include/coverhd.h, network/ne2000.c, start/80386ex.h, start/80386ex.inc, start/macros.inc, start/start.S, startup/bspstart.c, startup/linkcmds, startup/setvec.c, timer/timer.c, timer/timerisr.S, tools/debug_ada/init.c, tools/debug_c/init.c, tools/debug_c/serial_gdb.c, tools/debug_c/system.h, tools/network_ada/listener/init.c, tools/network_ada/tcprelay/init.c, tools/ts_1325_ada/init.c: URL for license changed.
  • Property mode set to 100644
File size: 3.8 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.rtems.com/license/LICENSE.
13 *
14 *  Ported to the i386ex and submitted by:
15 *
16 *    Erik Ivanenko
17 *    University of Toronto
18 *    erik.ivanenko@utoronto.ca
19 * 
20 *  $Id$
21 */
22
23void bsp_clean_up(void);
24
25#include <bsp.h>
26#include <rtems/libio.h>
27#include <rtems/libcsupport.h>
28
29/*
30 *  The original table from the application and our copy of it with
31 *  some changes.
32 */
33
34extern rtems_configuration_table  Configuration;
35rtems_configuration_table  BSP_Configuration;
36
37rtems_cpu_table Cpu_table;
38
39/*
40 *  Tells us where to put the workspace in case remote debugger is present.
41 */
42
43extern rtems_unsigned32  rdb_start;
44
45/*
46 *  Use the shared implementations of the following routines
47 */
48 
49void bsp_postdriver_hook(void);
50void bsp_libc_init( void *, unsigned32, int );
51
52/*
53 *  Function:   bsp_pretasking_hook
54 *  Created:    95/03/10
55 *
56 *  Description:
57 *      BSP pretasking hook.  Called just before drivers are initialized.
58 *      Used to setup libc and install any BSP extensions.
59 *
60 *  NOTES:
61 *      Must not use libc (to do io) from here, since drivers are
62 *      not yet initialized.
63 *
64 */
65 
66void bsp_pretasking_hook(void)
67{
68    extern int heap_bottom;
69    rtems_unsigned32 heap_start;
70    rtems_unsigned32 heap_size;
71
72    heap_start = (rtems_unsigned32) &heap_bottom;
73    if (heap_start & (CPU_ALIGNMENT-1))
74      heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
75
76    heap_size = BSP_Configuration.work_space_start -(void *) heap_start ;
77    heap_size &= 0xfffffff0;  /* keep it as a multiple of 16 bytes */
78
79    bsp_libc_init((void *) heap_start, heap_size, 0);
80
81
82#ifdef RTEMS_DEBUG
83    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
84#endif
85}
86
87/*
88 *  bsp_start
89 *
90 *  This routine does the bulk of the system initialization.
91 */
92
93void bsp_start( void )
94{
95  void rtems_irq_mngt_init();
96
97  /*
98   *  we do not use the pretasking_hook.
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_table_segment = get_ds();
104  Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table;
105  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
106
107  BSP_Configuration.work_space_start = (void *)
108     RAM_END - BSP_Configuration.work_space_size;
109
110  /*
111   * Init rtems_interrupt_management
112   */
113  rtems_irq_mngt_init();
114
115  /*
116   * Init rtems exceptions management
117   */
118  rtems_exception_init_mngt();
119
120  /*
121   *  The following information is very useful when debugging.
122   */
123
124#ifdef BSP_DEBUG
125  printk( "RAM_START = 0x%x\nRAM_END = 0x%x\n", RAM_START, RAM_END );
126  printk( "work_space_start = 0x%x\n",
127     BSP_Configuration.work_space_start );
128  printk( "work_space_size = 0x%x\n",
129     BSP_Configuration.work_space_size );
130  printk( "maximum_extensions = 0x%x\n",
131     BSP_Configuration.maximum_extensions );
132  printk( "microseconds_per_tick = 0x%x\n",
133     BSP_Configuration.microseconds_per_tick );
134  printk( "ticks_per_timeslice = 0x%x\n",
135     BSP_Configuration.ticks_per_timeslice );
136  printk( "maximum_devices = 0x%x\n",
137     BSP_Configuration.maximum_devices );
138  printk( "number_of_device_drivers = 0x%x\n",
139     BSP_Configuration.number_of_device_drivers );
140  printk( "Device_driver_table = 0x%x\n",
141     BSP_Configuration.Device_driver_table );
142
143  /*  printk( "_heap_size = 0x%x\n", _heap_size );
144      printk( "_stack_size = 0x%x\n", _stack_size ); */
145#endif
146}
147
148void bsp_clean_up(void) {
149  printk("bsp_cleanup called\n");
150}
151
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