source: rtems/c/src/lib/libbsp/powerpc/papyrus/startup/bspstart.c @ 634e746

4.104.114.84.95
Last change on this file since 634e746 was 634e746, checked in by Joel Sherrill <joel.sherrill@…>, on Jan 29, 1997 at 12:28:47 AM

All RTEMS system call implementation renamed to be rtems_*.

  • Property mode set to 100644
File size: 6.7 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:     Andrew Bray <andy@i-cubed.co.uk>
13 *
14 *  COPYRIGHT (c) 1995 by i-cubed ltd.
15 *
16 *  To anyone who acknowledges that this file is provided "AS IS"
17 *  without any express or implied warranty:
18 *      permission to use, copy, modify, and distribute this file
19 *      for any purpose is hereby granted without fee, provided that
20 *      the above copyright notice and this notice appears in all
21 *      copies, and that the name of i-cubed limited not be used in
22 *      advertising or publicity pertaining to distribution of the
23 *      software without specific, written prior permission.
24 *      i-cubed limited makes no representations about the suitability
25 *      of this software for any purpose.
26 *
27 *  Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c:
28 *
29 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
30 *  On-Line Applications Research Corporation (OAR).
31 *  All rights assigned to U.S. Government, 1994.
32 *
33 *  This material may be reproduced by or for the U.S. Government pursuant
34 *  to the copyright license under the clause at DFARS 252.227-7013.  This
35 *  notice must appear in all copies of this file and its derivatives.
36 *
37 *  $Id$
38 */
39
40#include <bsp.h>
41#include <rtems/libio.h>
42 
43#include <libcsupport.h>
44 
45#include <string.h>
46#include <fcntl.h>
47 
48#ifdef STACK_CHECKER_ON
49#include <stackchk.h>
50#endif
51
52/*
53 *  The original table from the application and our copy of it with
54 *  some changes.
55 */
56
57extern rtems_configuration_table Configuration;
58
59rtems_configuration_table  BSP_Configuration;
60
61rtems_cpu_table Cpu_table;
62
63char *rtems_progname;
64
65/*      Initialize whatever libc we are using
66 *      called from postdriver hook
67 */
68
69void bsp_libc_init()
70{
71    extern int _end;
72    rtems_unsigned32        heap_start;
73
74    heap_start = (rtems_unsigned32) &_end;
75    if (heap_start & (CPU_ALIGNMENT-1))
76        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
77
78    /*
79     *  The last parameter to RTEMS_Malloc_Initialize is the "chunk"
80     *  size which a multiple of will be requested on each sbrk()
81     *  call by malloc().  A value of 0 indicates that sbrk() should
82     *  not be called to extend the heap.
83     */
84
85    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
86
87    /*
88     *  Init the RTEMS libio facility to provide UNIX-like system
89     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
90     *  Uses malloc() to get area for the iops, so must be after malloc init
91     */
92
93    rtems_libio_init();
94
95    /*
96     * Set up for the libc handling.
97     */
98
99    if (BSP_Configuration.ticks_per_timeslice > 0)
100        libc_init(1);                /* reentrant if possible */
101    else
102        libc_init(0);                /* non-reentrant */
103
104}
105
106/*
107 *  Function:   bsp_pretasking_hook
108 *  Created:    95/03/10
109 *
110 *  Description:
111 *      BSP pretasking hook.  Called just before drivers are initialized.
112 *      Used to setup libc and install any BSP extensions.
113 *
114 *  NOTES:
115 *      Must not use libc (to do io) from here, since drivers are
116 *      not yet initialized.
117 *
118 */
119 
120void
121bsp_pretasking_hook(void)
122{
123    bsp_libc_init();
124 
125#ifdef STACK_CHECKER_ON
126    /*
127     *  Initialize the stack bounds checker
128     *  We can either turn it on here or from the app.
129     */
130 
131    Stack_check_Initialize();
132#endif
133 
134#ifdef RTEMS_DEBUG
135    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
136#endif
137}
138 
139
140/*
141 * After drivers are setup, register some "filenames"
142 * and open stdin, stdout, stderr files
143 *
144 * Newlib will automatically associate the files with these
145 * (it hardcodes the numbers)
146 */
147 
148void
149bsp_postdriver_hook(void)
150{
151  int stdin_fd, stdout_fd, stderr_fd;
152  int error_code;
153 
154  error_code = 'S' << 24 | 'T' << 16;
155 
156  if ((stdin_fd = __rtems_open("/dev/console", O_RDONLY, 0)) == -1)
157    rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' );
158 
159  if ((stdout_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1)
160    rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' );
161 
162  if ((stderr_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1)
163    rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' );
164 
165  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
166    rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' );
167}
168
169int bsp_start(
170  int argc,
171  char **argv,
172  char **environp
173)
174{
175  if ((argc > 0) && argv && argv[0])
176    rtems_progname = argv[0];
177  else
178    rtems_progname = "RTEMS";
179
180  /*
181   *  Allocate the memory for the RTEMS Work Space.  This can come from
182   *  a variety of places: hard coded address, malloc'ed from outside
183   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
184   *  typically done by stock BSPs) by subtracting the required amount
185   *  of work space from the last physical address on the CPU board.
186   */
187
188  /*
189   *  Copy the Configuration Table .. so we can change it
190   */
191
192  BSP_Configuration = Configuration;
193
194  /*
195   * Add 1 region for the RTEMS Malloc
196   */
197
198  BSP_Configuration.RTEMS_api_configuration->maximum_regions++;
199
200  /*
201   * Add 1 extension for newlib libc
202   */
203
204#ifdef RTEMS_NEWLIB
205    BSP_Configuration.maximum_extensions++;
206#endif
207
208  /*
209   * Add 1 extension for stack checker
210   */
211
212#ifdef STACK_CHECKER_ON
213    BSP_Configuration.maximum_extensions++;
214#endif
215
216  /*
217   * Tell libio how many fd's we want and allow it to tweak config
218   */
219
220  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
221
222  /*
223   *  Need to "allocate" the memory for the RTEMS Workspace and
224   *  tell the RTEMS configuration where it is.  This memory is
225   *  not malloc'ed.  It is just "pulled from the air".
226   */
227
228  BSP_Configuration.work_space_start = (void *)
229      RAM_END - BSP_Configuration.work_space_size;
230
231  /*
232   *  initialize the CPU table for this BSP
233   */
234
235  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
236
237  Cpu_table.predriver_hook = NULL;
238
239  Cpu_table.postdriver_hook = bsp_postdriver_hook;
240
241  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
242
243  Cpu_table.do_zero_of_workspace = TRUE;
244
245  Cpu_table.interrupt_stack_size = 4 * 1024;
246
247  Cpu_table.extra_mpci_receive_server_stack = 0;
248
249  /*
250   *  Don't forget the other CPU Table entries.
251   */
252
253  Cpu_table.clicks_per_usec = 10;
254
255  Cpu_table.serial_per_sec = 10000000;
256
257  Cpu_table.serial_external_clock = 1;
258
259  Cpu_table.serial_xon_xoff = 0;
260
261  Cpu_table.serial_cts_rts = 1;
262
263  Cpu_table.serial_rate = 9600;
264
265  Cpu_table.timer_average_overhead = 2;
266
267  Cpu_table.timer_least_valid = 3;
268
269  /*
270   *  Start RTEMS
271   */
272
273  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
274
275  bsp_cleanup();
276}
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