source: rtems/c/src/lib/libbsp/i386/force386/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 Sep 11, 1995 at 7:35:39 PM

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: 4.4 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 <fcntl.h>
29
30#ifdef STACK_CHECKER_ON
31#include <stackchk.h>
32#endif
33
34/*
35 *  The original table from the application and our copy of it with
36 *  some changes.
37 */
38
39extern rtems_configuration_table  Configuration;
40rtems_configuration_table  BSP_Configuration;
41
42rtems_cpu_table Cpu_table;
43
44char *rtems_progname;
45
46/*      Initialize whatever libc we are using
47 *      called from postdriver hook
48 */
49
50void bsp_libc_init()
51{
52    extern int end;
53    rtems_unsigned32        heap_start;
54
55    heap_start = (rtems_unsigned32) &end;
56    if (heap_start & (CPU_ALIGNMENT-1))
57        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
58
59    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
60
61    /*
62     *  Init the RTEMS libio facility to provide UNIX-like system
63     *  calls for use by newlib (ie: provide __open, __close, etc)
64     *  Uses malloc() to get area for the iops, so must be after malloc init
65     */
66
67    rtems_libio_init();
68
69    /*
70     * Set up for the libc handling.
71     */
72
73    if (BSP_Configuration.ticks_per_timeslice > 0)
74        libc_init(1);                /* reentrant if possible */
75    else
76        libc_init(0);                /* non-reentrant */
77
78    /*
79     *  Initialize the stack bounds checker
80     */
81
82#ifdef STACK_CHECKER_ON
83    Stack_check_Initialize();
84#endif
85
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 
121  if ((argc > 0) && argv && argv[0])
122    rtems_progname = argv[0];
123  else
124    rtems_progname = "RTEMS";
125 
126  /*
127   *  FORCE documentation incorrectly states that the bus request
128   *  level is initialized to 3.  It is actually initialized by
129   *  FORCEbug to 0.
130   */
131
132  outport_byte( 0x00, 0x3f );      /* resets VMEbus request level */
133
134  /*
135   *  we do not use the pretasking_hook.
136   */
137
138  Cpu_table.pretasking_hook = NULL;
139
140  Cpu_table.predriver_hook = bsp_libc_init;  /* RTEMS resources available */
141
142  Cpu_table.postdriver_hook = bsp_postdriver_hook;
143
144  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
145
146  Cpu_table.do_zero_of_workspace = TRUE;
147
148  Cpu_table.interrupt_table_segment = get_ds();
149
150  Cpu_table.interrupt_table_offset = (void *)Interrupt_descriptor_table;
151
152  Cpu_table.interrupt_stack_size = 4096;
153
154  Cpu_table.extra_system_initialization_stack = 0;
155
156  /*
157   *  Copy the table
158   */
159
160  BSP_Configuration = Configuration;
161
162  BSP_Configuration.work_space_start = (void *)
163     RAM_END - BSP_Configuration.work_space_size;
164
165  /*
166   * Add 1 region for Malloc in libc_low
167   */
168
169  BSP_Configuration.maximum_regions++;
170
171  /*
172   * Add 1 extension for newlib libc
173   */
174
175#ifdef RTEMS_NEWLIB
176    BSP_Configuration.maximum_extensions++;
177#endif
178
179  /*
180   * Add another extension if using the stack checker
181   */
182
183#ifdef STACK_CHECKER_ON
184    BSP_Configuration.maximum_extensions++;
185#endif
186
187  /*
188   * Tell libio how many fd's we want and allow it to tweak config
189   */
190
191  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
192
193  rtems_initialize_executive( &BSP_Configuration, &Cpu_table );
194  /* does not return */
195  /* no cleanup necessary for Force CPU-386 */
196  return 0;
197}
Note: See TracBrowser for help on using the repository browser.