source: rtems/c/src/lib/libbsp/i960/cvme961/startup/bspstart.c @ c244a9ee

4.104.114.84.9
Last change on this file since c244a9ee was c244a9ee, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 14, 1998 at 9:32:12 PM

Stack checker extension now accounted for in confdefs.h

  • Property mode set to 100644
File size: 4.0 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) 1989-1998.
13 *  On-Line Applications Research Corporation (OAR).
14 *  Copyright assigned to U.S. Government, 1994.
15 *
16 *  The license and distribution terms for this file may be
17 *  found in the file LICENSE in this distribution or at
18 *  http://www.OARcorp.com/rtems/license.html.
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 
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;
40
41rtems_configuration_table  BSP_Configuration;
42
43rtems_cpu_table Cpu_table;
44
45char *rtems_progname;
46
47/*      Initialize whatever libc we are using
48 *      called from postdriver hook
49 */
50
51void bsp_libc_init()
52{
53    extern int end;
54    rtems_unsigned32        heap_start;
55
56    heap_start = (rtems_unsigned32) &end;
57    if (heap_start & (CPU_ALIGNMENT-1))
58        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
59
60    RTEMS_Malloc_Initialize((void *) heap_start, 64 * 1024, 0);
61
62    /*
63     *  Init the RTEMS libio facility to provide UNIX-like system
64     *  calls for use by newlib (ie: provide __rtems_open, __rtems_close, etc)
65     *  Uses malloc() to get area for the iops, so must be after malloc init
66     */
67
68    rtems_libio_init();
69
70    /*
71     * Set up for the libc handling.
72     */
73
74    if (BSP_Configuration.ticks_per_timeslice > 0)
75        libc_init(1);                /* reentrant if possible */
76    else
77        libc_init(0);                /* non-reentrant */
78}
79
80/*
81 *  Function:   bsp_pretasking_hook
82 *  Created:    95/03/10
83 *
84 *  Description:
85 *      BSP pretasking hook.  Called just before drivers are initialized.
86 *      Used to setup libc and install any BSP extensions.
87 *
88 *  NOTES:
89 *      Must not use libc (to do io) from here, since drivers are
90 *      not yet initialized.
91 *
92 */
93 
94void
95bsp_pretasking_hook(void)
96{
97    bsp_libc_init();
98 
99#ifdef STACK_CHECKER_ON
100    /*
101     *  Initialize the stack bounds checker
102     *  We can either turn it on here or from the app.
103     */
104 
105    Stack_check_Initialize();
106#endif
107 
108#ifdef RTEMS_DEBUG
109    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
110#endif
111}
112 
113
114/*
115 *  Use the shared bsp_postdriver_hook() implementation
116 */
117 
118void bsp_postdriver_hook(void);
119
120void bsp_start( void )
121{
122  /* set node number in SQSIO4 CTL REG */
123
124  *((rtems_unsigned32 *)0xc00000b0) =
125       (Configuration.User_multiprocessing_table) ?
126          Configuration.User_multiprocessing_table->node : 0;
127
128  Prcb    = get_prcb();
129  Ctl_tbl = Prcb->control_tbl;
130
131  /* following configures the data breakpoint (which must be set
132   *   before this is executed) to break on writes only.
133   */
134
135  Ctl_tbl->bpcon &= ~0x00cc0000;
136  i960_reload_ctl_group( 6 );
137
138  /*  bit 31 of the Register Cache Control can be set to
139   *  enable an alternative caching algorithm.  It does
140   *  not appear to help RTEMS.
141   */
142
143  /* Configure Number of Register Caches */
144
145  Prcb->reg_cache_cfg = 8;
146  i960_soft_reset( Prcb );
147
148  /*
149   *  we do not use the pretasking_hook.
150   */
151
152  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
153
154  Cpu_table.predriver_hook = NULL;
155
156  Cpu_table.postdriver_hook = bsp_postdriver_hook;
157
158  Cpu_table.idle_task = NULL;  /* do not override system IDLE task */
159
160  Cpu_table.do_zero_of_workspace = TRUE;
161
162  Cpu_table.interrupt_stack_size = 4096;
163
164  Cpu_table.extra_mpci_receive_server_stack = 0;
165
166  Cpu_table.Prcb = Prcb;
167
168  /*
169   *  Copy the table
170   */
171
172  BSP_Configuration = Configuration;
173
174  /*
175   * Tell libio how many fd's we want and allow it to tweak config
176   */
177
178  rtems_libio_config(&BSP_Configuration, BSP_LIBIO_MAX_FDS);
179
180  BSP_Configuration.work_space_start = (void *)
181     (RAM_END - BSP_Configuration.work_space_size);
182}
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