source: rtems/c/src/lib/libbsp/i960/cvme961/startup/bspstart.c @ eba2e4f

4.104.114.84.95
Last change on this file since eba2e4f was eba2e4f, checked in by Joel Sherrill <joel.sherrill@…>, on Nov 1, 2000 at 9:19:23 PM

2000-11-01 Joel Sherrill <joel@…>

  • startup/bspstart.c: assoc.h, error.h, libio_.h, libio.h, and libcsupport.h moved from libc to lib/include/rtems and now must be referenced as <rtems/XXX.h>. Header file order was cleaned up while doing this.
  • Property mode set to 100644
File size: 2.7 KB
Line 
1/*
2 *  This routine starts the application.  It includes application,
3 *  board, and monitor specific initialization and configuration.
4 *  The generic CPU dependent initialization has been performed
5 *  before this routine is invoked.
6 *
7 *  COPYRIGHT (c) 1989-1999.
8 *  On-Line Applications Research Corporation (OAR).
9 *
10 *  The license and distribution terms for this file may be
11 *  found in the file LICENSE in this distribution or at
12 *  http://www.OARcorp.com/rtems/license.html.
13 *
14 *  $Id$
15 */
16
17#include <string.h>
18
19#include <bsp.h>
20#include <rtems/libio.h>
21#include <rtems/libcsupport.h>
22 
23/*
24 *  The original table from the application and our copy of it with
25 *  some changes.
26 */
27
28extern rtems_configuration_table Configuration;
29
30rtems_configuration_table  BSP_Configuration;
31
32rtems_cpu_table Cpu_table;
33
34char *rtems_progname;
35
36/*
37 *  Use the shared implementations of the following routines
38 */
39 
40void bsp_postdriver_hook(void);
41void bsp_libc_init( void *, unsigned32, int );
42
43/*
44 *  Function:   bsp_pretasking_hook
45 *  Created:    95/03/10
46 *
47 *  Description:
48 *      BSP pretasking hook.  Called just before drivers are initialized.
49 *      Used to setup libc and install any BSP extensions.
50 *
51 *  NOTES:
52 *      Must not use libc (to do io) from here, since drivers are
53 *      not yet initialized.
54 *
55 */
56 
57void bsp_pretasking_hook(void)
58{
59    extern int end;
60    rtems_unsigned32        heap_start;
61
62    heap_start = (rtems_unsigned32) &end;
63    if (heap_start & (CPU_ALIGNMENT-1))
64        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
65
66    bsp_libc_init((void *) heap_start, 64 * 1024, 0);
67 
68#ifdef RTEMS_DEBUG
69    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
70#endif
71}
72 
73/*
74 *  bsp_start
75 *
76 *  This routine does the bulk of the system initialization.
77 */
78
79void bsp_start( void )
80{
81  /* set node number in SQSIO4 CTL REG */
82
83  *((rtems_unsigned32 *)0xc00000b0) =
84       (Configuration.User_multiprocessing_table) ?
85          Configuration.User_multiprocessing_table->node : 0;
86
87  Prcb    = get_prcb();
88  Ctl_tbl = Prcb->control_tbl;
89
90  /* following configures the data breakpoint (which must be set
91   *   before this is executed) to break on writes only.
92   */
93
94  Ctl_tbl->bpcon &= ~0x00cc0000;
95  i960_reload_ctl_group( 6 );
96
97  /*  bit 31 of the Register Cache Control can be set to
98   *  enable an alternative caching algorithm.  It does
99   *  not appear to help RTEMS.
100   */
101
102  /* Configure Number of Register Caches */
103
104  Prcb->reg_cache_cfg = 8;
105  i960_soft_reset( Prcb );
106
107  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
108  Cpu_table.postdriver_hook = bsp_postdriver_hook;
109  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
110
111  BSP_Configuration.work_space_start = (void *)
112     (RAM_END - BSP_Configuration.work_space_size);
113}
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