source: rtems/c/src/lib/libbsp/i960/cvme961/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: 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 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
13 *  On-Line Applications Research Corporation (OAR).
14 *  All rights assigned to U.S. Government, 1994.
15 *
16 *  This material may be reproduced by or for the U.S. Government pursuant
17 *  to the copyright license under the clause at DFARS 252.227-7013.  This
18 *  notice must appear in all copies of this file and its derivatives.
19 *
20 *  $Id$
21 */
22
23#include <bsp.h>
24#include <rtems/libio.h>
25 
26#include <libcsupport.h>
27 
28#include <string.h>
29#include <fcntl.h>
30 
31#ifdef STACK_CHECKER_ON
32#include <stackchk.h>
33#endif
34
35/*
36 *  The original table from the application and our copy of it with
37 *  some changes.
38 */
39
40extern rtems_configuration_table Configuration;
41
42rtems_configuration_table  BSP_Configuration;
43
44rtems_cpu_table Cpu_table;
45
46char *rtems_progname;
47
48/*      Initialize whatever libc we are using
49 *      called from postdriver hook
50 */
51
52void bsp_libc_init()
53{
54    extern int end;
55    rtems_unsigned32        heap_start;
56
57    heap_start = (rtems_unsigned32) &end;
58    if (heap_start & (CPU_ALIGNMENT-1))
59        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
60
61    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
62
63    /*
64     *  Init the RTEMS libio facility to provide UNIX-like system
65     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
66     *  Uses malloc() to get area for the iops, so must be after malloc init
67     */
68
69    rtems_libio_init();
70
71    /*
72     * Set up for the libc handling.
73     */
74
75    if (BSP_Configuration.ticks_per_timeslice > 0)
76        libc_init(1);                /* reentrant if possible */
77    else
78        libc_init(0);                /* non-reentrant */
79}
80
81/*
82 *  Function:   bsp_pretasking_hook
83 *  Created:    95/03/10
84 *
85 *  Description:
86 *      BSP pretasking hook.  Called just before drivers are initialized.
87 *      Used to setup libc and install any BSP extensions.
88 *
89 *  NOTES:
90 *      Must not use libc (to do io) from here, since drivers are
91 *      not yet initialized.
92 *
93 */
94 
95void
96bsp_pretasking_hook(void)
97{
98    bsp_libc_init();
99 
100#ifdef STACK_CHECKER_ON
101    /*
102     *  Initialize the stack bounds checker
103     *  We can either turn it on here or from the app.
104     */
105 
106    Stack_check_Initialize();
107#endif
108 
109#ifdef RTEMS_DEBUG
110    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
111#endif
112}
113 
114
115/*
116 * After drivers are setup, register some "filenames"
117 * and open stdin, stdout, stderr files
118 *
119 * Newlib will automatically associate the files with these
120 * (it hardcodes the numbers)
121 */
122 
123void
124bsp_postdriver_hook(void)
125{
126  int stdin_fd, stdout_fd, stderr_fd;
127  int error_code;
128 
129  error_code = 'S' << 24 | 'T' << 16;
130 
131  if ((stdin_fd = __rtems_open("/dev/console", O_RDONLY, 0)) == -1)
132    rtems_fatal_error_occurred( error_code | 'D' << 8 | '0' );
133 
134  if ((stdout_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1)
135    rtems_fatal_error_occurred( error_code | 'D' << 8 | '1' );
136 
137  if ((stderr_fd = __rtems_open("/dev/console", O_WRONLY, 0)) == -1)
138    rtems_fatal_error_occurred( error_code | 'D' << 8 | '2' );
139 
140  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
141    rtems_fatal_error_occurred( error_code | 'I' << 8 | 'O' );
142}
143
144int main(
145  int argc,
146  char **argv,
147  char **environp
148)
149{
150  if ((argc > 0) && argv && argv[0])
151    rtems_progname = argv[0];
152  else
153    rtems_progname = "RTEMS";
154
155  /* set node number in SQSIO4 CTL REG */
156
157  *((rtems_unsigned32 *)0xc00000b0) =
158       (Configuration.User_multiprocessing_table) ?
159          Configuration.User_multiprocessing_table->node : 0;
160
161  Prcb    = get_prcb();
162  Ctl_tbl = Prcb->control_tbl;
163
164  /* following configures the data breakpoint (which must be set
165   *   before this is executed) to break on writes only.
166   */
167
168  Ctl_tbl->bpcon &= ~0x00cc0000;
169  i960_reload_ctl_group( 6 );
170
171  /*  bit 31 of the Register Cache Control can be set to
172   *  enable an alternative caching algorithm.  It does
173   *  not appear to help RTEMS.
174   */
175
176  /* Configure Number of Register Caches */
177
178  Prcb->reg_cache_cfg = 8;
179  i960_soft_reset( Prcb );
180
181  /*
182   *  we do not use the pretasking_hook.
183   */
184
185  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
186
187  Cpu_table.predriver_hook = NULL;
188
189  Cpu_table.postdriver_hook = bsp_postdriver_hook;
190
191  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
192
193  Cpu_table.do_zero_of_workspace = TRUE;
194
195  Cpu_table.interrupt_stack_size = 4096;
196
197  Cpu_table.extra_mpci_receive_server_stack = 0;
198
199  Cpu_table.Prcb = Prcb;
200
201  /*
202   *  Copy the table
203   */
204
205  BSP_Configuration = Configuration;
206
207  /*
208   * Add 1 region for the RTEMS Malloc
209   */
210
211  BSP_Configuration.RTEMS_api_configuration->maximum_regions++;
212
213  /*
214   * Add 1 extension for newlib libc
215   */
216
217#ifdef RTEMS_NEWLIB
218    BSP_Configuration.maximum_extensions++;
219#endif
220
221  /*
222   * Add another extension if using the stack checker
223   */
224
225#ifdef STACK_CHECKER_ON
226    BSP_Configuration.maximum_extensions++;
227#endif
228
229  /*
230   * Tell libio how many fd's we want and allow it to tweak config
231   */
232
233  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
234
235  BSP_Configuration.work_space_start = (void *)
236     (RAM_END - BSP_Configuration.work_space_size);
237
238  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
239  /* does not return */
240
241  bsp_cleanup();
242
243  return 0;
244
245}
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