source: rtems/c/src/lib/libbsp/i960/cvme961/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: 4.8 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 __open, __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     *  Initialize the stack bounds checker
81     */
82
83#ifdef STACK_CHECKER_ON
84    Stack_check_Initialize();
85#endif
86}
87
88/*
89 * After drivers are setup, register some "filenames"
90 * and open stdin, stdout, stderr files
91 *
92 * Newlib will automatically associate the files with these
93 * (it hardcodes the numbers)
94 */
95 
96void
97bsp_postdriver_hook(void)
98{
99  int stdin_fd, stdout_fd, stderr_fd;
100 
101  if ((stdin_fd = __open("/dev/console", O_RDONLY, 0)) == -1)
102    rtems_fatal_error_occurred('STD0');
103 
104  if ((stdout_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
105    rtems_fatal_error_occurred('STD1');
106 
107  if ((stderr_fd = __open("/dev/console", O_WRONLY, 0)) == -1)
108    rtems_fatal_error_occurred('STD2');
109 
110  if ((stdin_fd != 0) || (stdout_fd != 1) || (stderr_fd != 2))
111    rtems_fatal_error_occurred('STIO');
112}
113
114int main(
115  int argc,
116  char **argv,
117  char **environp
118)
119{
120  if ((argc > 0) && argv && argv[0])
121    rtems_progname = argv[0];
122  else
123    rtems_progname = "RTEMS";
124
125  /* set node number in SQSIO4 CTL REG */
126
127  *((rtems_unsigned32 *)0xc00000b0) =
128       (Configuration.User_multiprocessing_table) ?
129          Configuration.User_multiprocessing_table->node : 0;
130
131  Prcb    = get_prcb();
132  Ctl_tbl = Prcb->control_tbl;
133
134  /* following configures the data breakpoint (which must be set
135   *   before this is executed) to break on writes only.
136   */
137
138  Ctl_tbl->bpcon &= ~0x00cc0000;
139  i960_reload_ctl_group( 6 );
140
141  /*  bit 31 of the Register Cache Control can be set to
142   *  enable an alternative caching algorithm.  It does
143   *  not appear to help RTEMS.
144   */
145
146  /* Configure Number of Register Caches */
147
148  Prcb->reg_cache_cfg = 8;
149  i960_soft_reset( Prcb );
150
151  /*
152   *  we do not use the pretasking_hook.
153   */
154
155  Cpu_table.pretasking_hook = NULL;
156
157  Cpu_table.predriver_hook = bsp_libc_init;  /* RTEMS resources available */
158
159  Cpu_table.postdriver_hook = bsp_postdriver_hook;
160
161  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
162
163  Cpu_table.do_zero_of_workspace = TRUE;
164
165  Cpu_table.interrupt_stack_size = 4096;
166
167  Cpu_table.extra_system_initialization_stack = 0;
168
169  Cpu_table.Prcb = Prcb;
170
171  /*
172   *  Copy the table
173   */
174
175  BSP_Configuration = Configuration;
176
177  /*
178   * Add 1 region for the RTEMS Malloc
179   */
180
181  BSP_Configuration.maximum_regions++;
182
183  /*
184   * Add 1 extension for newlib libc
185   */
186
187#ifdef RTEMS_NEWLIB
188    BSP_Configuration.maximum_extensions++;
189#endif
190
191  /*
192   * Add another extension if using the stack checker
193   */
194
195#ifdef STACK_CHECKER_ON
196    BSP_Configuration.maximum_extensions++;
197#endif
198
199  /*
200   * Tell libio how many fd's we want and allow it to tweak config
201   */
202
203  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
204
205  BSP_Configuration.work_space_start = (void *)
206     (RAM_END - BSP_Configuration.work_space_size);
207
208  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
209  /* does not return */
210
211  bsp_cleanup();
212
213  return 0;
214
215}
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