source: rtems/c/src/lib/libbsp/i960/cvme961/startup/bspstart.c @ 49ed8e7

4.104.114.84.95
Last change on this file since 49ed8e7 was 49ed8e7, checked in by Joel Sherrill <joel.sherrill@…>, on Oct 16, 2001 at 6:50:03 PM

2001-10-16 Ralf Corsepius <corsepiu@…>

  • include/zilog/Makefile.am: Remove.
  • include/motorola/Makefile.am: Remove.
  • include/sys/Makefile.am: Remove.
  • include/rtems/Makefile.am: Remove.
  • include/Makefile.am: Handle subdirs, require automake-1.5
  • Makefile.am: Require automake-1.5.
  • Property mode set to 100644
File size: 2.8 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#define C961_INIT
20
21#include <bsp.h>
22#include <rtems/libio.h>
23#include <rtems/libcsupport.h>
24 
25/*
26 *  The original table from the application and our copy of it with
27 *  some changes.
28 */
29
30extern rtems_configuration_table Configuration;
31
32rtems_configuration_table  BSP_Configuration;
33
34rtems_cpu_table Cpu_table;
35
36char *rtems_progname;
37
38/*
39 *  Use the shared implementations of the following routines
40 */
41 
42void bsp_postdriver_hook(void);
43void bsp_libc_init( void *, unsigned32, int );
44
45/*
46 *  Function:   bsp_pretasking_hook
47 *  Created:    95/03/10
48 *
49 *  Description:
50 *      BSP pretasking hook.  Called just before drivers are initialized.
51 *      Used to setup libc and install any BSP extensions.
52 *
53 *  NOTES:
54 *      Must not use libc (to do io) from here, since drivers are
55 *      not yet initialized.
56 *
57 */
58 
59void bsp_pretasking_hook(void)
60{
61    extern int end;
62    rtems_unsigned32        heap_start;
63
64    heap_start = (rtems_unsigned32) &end;
65    if (heap_start & (CPU_ALIGNMENT-1))
66        heap_start = (heap_start + CPU_ALIGNMENT) & ~(CPU_ALIGNMENT-1);
67
68    bsp_libc_init((void *) heap_start, 64 * 1024, 0);
69 
70#ifdef RTEMS_DEBUG
71    rtems_debug_enable( RTEMS_DEBUG_ALL_MASK );
72#endif
73}
74 
75/*
76 *  bsp_start
77 *
78 *  This routine does the bulk of the system initialization.
79 */
80
81void bsp_start( void )
82{
83  /* set node number in SQSIO4 CTL REG */
84
85  *((rtems_unsigned32 *)0xc00000b0) =
86       (Configuration.User_multiprocessing_table) ?
87          Configuration.User_multiprocessing_table->node : 0;
88
89  Prcb    = get_prcb();
90  Ctl_tbl = Prcb->control_tbl;
91
92  /* following configures the data breakpoint (which must be set
93   *   before this is executed) to break on writes only.
94   */
95
96  Ctl_tbl->bpcon &= ~0x00cc0000;
97  i960_reload_ctl_group( 6 );
98
99  /*  bit 31 of the Register Cache Control can be set to
100   *  enable an alternative caching algorithm.  It does
101   *  not appear to help RTEMS.
102   */
103
104  /* Configure Number of Register Caches */
105
106  Prcb->reg_cache_cfg = 8;
107  i960_soft_reset( Prcb );
108
109  Cpu_table.pretasking_hook = bsp_pretasking_hook;  /* init libc, etc. */
110  Cpu_table.postdriver_hook = bsp_postdriver_hook;
111  Cpu_table.interrupt_stack_size = CONFIGURE_INTERRUPT_STACK_MEMORY;
112
113  BSP_Configuration.work_space_start = (void *)
114     (RAM_END - BSP_Configuration.work_space_size);
115}
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