source: rtems/c/src/lib/libbsp/powerpc/papyrus/startup/bspstart.c @ 3a4ae6c

4.104.114.84.95
Last change on this file since 3a4ae6c was 3a4ae6c, checked in by Joel Sherrill <joel.sherrill@…>, on 09/11/95 at 19:35:39

The word "RTEMS" almost completely removed from the core.

Configuration Table Template file added and all tests
modified to use this. All gvar.h and conftbl.h files
removed from test directories.

Configuration parameter maximum_devices added.

Core semaphore and mutex handlers added and RTEMS API Semaphore
Manager updated to reflect this.

Initialization sequence changed to invoke API specific initialization
routines. Initialization tasks table now owned by RTEMS Tasks Manager.

Added user extension for post-switch.

Utilized user extensions to implement API specific functionality
like signal dispatching.

Added extensions to the System Initialization Thread so that an
API can register a function to be invoked while the system
is being initialized. These are largely equivalent to the
pre-driver and post-driver hooks.

Added the Modules file oar-go32_p5, modified oar-go32, and modified
the file make/custom/go32.cfg to look at an environment varable which
determines what CPU model is being used.

All BSPs updated to reflect named devices and clock driver's IOCTL
used by the Shared Memory Driver. Also merged clock isr into
main file and removed ckisr.c where possible.

Updated spsize to reflect new and moved variables.

Makefiles for the executive source and include files updated to show
break down of files into Core, RTEMS API, and Neither.

Header and inline files installed into subdirectory based on whether
logically in the Core or a part of the RTEMS API.

  • Property mode set to 100644
File size: 6.2 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.demon.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 *  bspstart.c,v 1.2 1995/05/31 16:56:29 joel Exp
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 __open, __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     *  Initialize the stack bounds checker
106     */
107
108#ifdef STACK_CHECKER_ON
109    Stack_check_Initialize();
110#endif
111}
112
113/*
114 * After drivers are setup, register some "filenames"
115 * and open stdin, stdout, stderr files
116 *
117 * Newlib will automatically associate the files with these
118 * (it hardcodes the numbers)
119 */
120 
121void
122bsp_postdriver_hook(void)
123{
124  int stdin_fd, stdout_fd, stderr_fd;
125 
126  if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1)
127    rtems_fatal_error_occurred('STD0');
128 
129  if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
130    rtems_fatal_error_occurred('STD1');
131 
132  if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
133    rtems_fatal_error_occurred('STD2');
134 
135  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
136    rtems_fatal_error_occurred('STIO');
137}
138
139int main(
140  int argc,
141  char **argv,
142  char **environp
143)
144{
145  if ((argc > 0) && argv && argv[0])
146    rtems_progname = argv[0];
147  else
148    rtems_progname = "RTEMS";
149
150  /*
151   *  Allocate the memory for the RTEMS Work Space.  This can come from
152   *  a variety of places: hard coded address, malloc'ed from outside
153   *  RTEMS world (e.g. simulator or primitive memory manager), or (as
154   *  typically done by stock BSPs) by subtracting the required amount
155   *  of work space from the last physical address on the CPU board.
156   */
157
158  /*
159   *  Copy the Configuration Table .. so we can change it
160   */
161
162  BSP_Configuration = Configuration;
163
164  /*
165   * Add 1 region for the RTEMS Malloc
166   */
167
168  BSP_Configuration.maximum_regions++;
169
170  /*
171   * Add 1 extension for newlib libc
172   */
173
174#ifdef RTEMS_NEWLIB
175    BSP_Configuration.maximum_extensions++;
176#endif
177
178  /*
179   * Add 1 extension for stack checker
180   */
181
182#ifdef STACK_CHECKER_ON
183    BSP_Configuration.maximum_extensions++;
184#endif
185
186  /*
187   * Tell libio how many fd's we want and allow it to tweak config
188   */
189
190  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
191
192  /*
193   *  Need to "allocate" the memory for the RTEMS Workspace and
194   *  tell the RTEMS configuration where it is.  This memory is
195   *  not malloc'ed.  It is just "pulled from the air".
196   */
197
198/*BSP_Configuration.work_space_size *= 4;*/
199
200  BSP_Configuration.work_space_start = (void *)
201      RAM_END - BSP_Configuration.work_space_size;
202
203  /*
204   *  initialize the CPU table for this BSP
205   */
206
207  /*
208   *  we do not use the pretasking_hook
209   */
210
211  Cpu_table.pretasking_hook = NULL;
212
213  Cpu_table.predriver_hook = bsp_libc_init;    /* RTEMS resources available */
214
215  Cpu_table.postdriver_hook = bsp_postdriver_hook;
216
217  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
218
219  Cpu_table.do_zero_of_workspace = TRUE;
220
221  Cpu_table.interrupt_stack_size = 4 * 1024;
222
223  Cpu_table.extra_system_initialization_stack = 0;
224
225  /*
226   *  Don't forget the other CPU Table entries.
227   */
228
229  Cpu_table.clicks_per_usec = 10;
230
231  Cpu_table.serial_per_sec = 10000000;
232
233  Cpu_table.serial_external_clock = 1;
234
235  Cpu_table.serial_xon_xoff = 0;
236
237  Cpu_table.serial_cts_rts = 1;
238
239  Cpu_table.serial_rate = 9600;
240
241  Cpu_table.timer_average_overhead = 2;
242
243  Cpu_table.timer_least_valid = 3;
244
245  /*
246   *  Start RTEMS
247   */
248
249  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
250
251  bsp_cleanup();
252}
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