source: rtems/c/src/lib/libbsp/powerpc/helas403/startup/bspstart.c @ 328876c

Last change on this file since 328876c 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: 5.5 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 *  Author:     Thomas Doerfler <td@imd.m.isar.de>
13 *              IMD Ingenieurbuero fuer Microcomputertechnik
14 *
15 *  COPYRIGHT (c) 1998 by IMD
16 *
17 *  Changes from IMD are covered by the original distributions terms.
18 *  This file has been derived from the papyrus BSP:   
19 *
20 *  Author:     Andrew Bray <andy@i-cubed.co.uk>
21 *
22 *  COPYRIGHT (c) 1995 by i-cubed ltd.
23 *
24 *  To anyone who acknowledges that this file is provided "AS IS"
25 *  without any express or implied warranty:
26 *      permission to use, copy, modify, and distribute this file
27 *      for any purpose is hereby granted without fee, provided that
28 *      the above copyright notice and this notice appears in all
29 *      copies, and that the name of i-cubed limited not be used in
30 *      advertising or publicity pertaining to distribution of the
31 *      software without specific, written prior permission.
32 *      i-cubed limited makes no representations about the suitability
33 *      of this software for any purpose.
34 *
35 *  Modifications for spooling console driver and control of memory layout
36 *  with linker command file by
37 *              Thomas Doerfler <td@imd.m.isar.de>
38 *  for these modifications:
39 *  COPYRIGHT (c) 1997 by IMD, Puchheim, Germany.
40 *
41 *  To anyone who acknowledges that this file is provided "AS IS"
42 *  without any express or implied warranty:
43 *      permission to use, copy, modify, and distribute this file
44 *      for any purpose is hereby granted without fee, provided that
45 *      the above copyright notice and this notice appears in all
46 *      copies. IMD makes no representations about the suitability
47 *      of this software for any purpose.
48 *
49 *  Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c:
50 *
51 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
52 *  On-Line Applications Research Corporation (OAR).
53 *  All rights assigned to U.S. Government, 1994.
54 *
55 *  This material may be reproduced by or for the U.S. Government pursuant
56 *  to the copyright license under the clause at DFARS 252.227-7013.  This
57 *  notice must appear in all copies of this file and its derivatives.
58 *
59 *  $Id$
60 */
61
62#include <string.h>
63#include <fcntl.h>
64
65#include <bsp.h>
66#include <rtems/libio.h>
67#include <rtems/libcsupport.h>
68#include <ictrl.h>
69 
70/*
71 *  The original table from the application and our copy of it with
72 *  some changes.
73 */
74
75extern rtems_configuration_table Configuration;
76
77rtems_configuration_table  BSP_Configuration;
78
79rtems_cpu_table Cpu_table;
80
81char *rtems_progname;
82void *bsp_ram_end = (void *)RAM_END;  /* first addr behind avail. ram area */
83
84/*      Initialize whatever libc we are using
85 *      called from postdriver hook
86 */
87 
88void bsp_postdriver_hook(void);
89void bsp_libc_init( void *, unsigned32, int );
90
91/*
92 *
93 *  bsp_predriver_hook
94 *
95 *  Before drivers are setup.
96 */ 
97
98void bsp_predriver_hook(void)
99{
100  rtems_status_code status;
101  /* init the PPC403GA external interrupt controller handler... */
102  status = ictrl_init();
103}
104
105/*
106 *  Function:   bsp_pretasking_hook
107 *  Created:    95/03/10
108 *
109 *  Description:
110 *      BSP pretasking hook.  Called just before drivers are initialized.
111 *      Used to setup libc and install any BSP extensions.
112 *
113 *  NOTES:
114 *      Must not use libc (to do io) from here, since drivers are
115 *      not yet initialized.
116 *
117 */
118 
119void bsp_pretasking_hook(void)
120{
121    extern int _end;
122    rtems_unsigned32        heap_start;
123
124    heap_start = (rtems_unsigned32) &_end;
125    if (heap_start & (CPU_ALIGNMENT-1))
126        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
127
128    bsp_libc_init((void *) heap_start, 64 * 1024, 0);
129 
130#ifdef RTEMS_DEBUG
131    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
132#endif
133}
134 
135
136/*
137 *  bsp_start
138 *
139 *  This routine does the bulk of the system initialization.
140 */
141
142void bsp_start( void )
143{
144  /*
145   *  Allocate the memory for the RTEMS Work Space.  This can come from
146   *  a variety of places: hard coded address, malloc'ed from outside
147   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
148   *  typically done by stock BSPs) by subtracting the required amount
149   *  of work space from the last physical address on the CPU board.
150   */
151
152  /*
153   *  Need to "allocate" the memory for the RTEMS Workspace and
154   *  tell the RTEMS configuration where it is.  This memory is
155   *  not malloc'ed.  It is just "pulled from the air".
156   */
157  /* FIME: plan usage of RAM better:
158     - make top of ram dynamic,
159     - take out some part for persistant log
160     - make rest of ram to heap...
161     -remove RAM_END from bsp.h, this cannot be valid...
162      or must be a function call
163   */
164  BSP_Configuration.work_space_start = (void *)
165      ((char *)(bsp_ram_end)) - BSP_Configuration.work_space_size;
166
167  /*
168   *  initialize the CPU table for this BSP
169   */
170
171  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
172  Cpu_table.predriver_hook  = bsp_predriver_hook;
173  Cpu_table.postdriver_hook = bsp_postdriver_hook;
174  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
175
176  Cpu_table.clicks_per_usec = 25;
177  Cpu_table.serial_per_sec = 25000000;
178  Cpu_table.serial_external_clock = 0;
179  Cpu_table.timer_internal_clock  = 1;
180  Cpu_table.serial_xon_xoff = 0;
181  Cpu_table.serial_cts_rts = 1;
182  Cpu_table.serial_rate = 9600;
183  Cpu_table.timer_average_overhead = 2;
184  Cpu_table.timer_least_valid = 3;
185  Cpu_table.exceptions_in_RAM = TRUE;
186}
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