source: rtems/c/src/lib/libbsp/powerpc/virtex/startup/bspstart.c @ 48ab8465

4.115
Last change on this file since 48ab8465 was 48ab8465, checked in by Sebastian Huber <sebastian.huber@…>, on 06/18/13 at 14:27:42

bsp/virtex: Do not use PPC403 TTY driver

  • 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 *  Author:     Thomas Doerfler <td@imd.m.isar.de>
13 *              IMD Ingenieurbuero fuer Microcomputertechnik
14 *
15 *  COPYRIGHT (c) 1998 by IMD
16 *
17 *  Changes from IMD are covered by the original distributions terms.
18 *  This file has been derived from the papyrus BSP:
19 *
20 *  Author:     Andrew Bray <andy@i-cubed.co.uk>
21 *
22 *  COPYRIGHT (c) 1995 by i-cubed ltd.
23 *
24 *  To anyone who acknowledges that this file is provided "AS IS"
25 *  without any express or implied warranty:
26 *      permission to use, copy, modify, and distribute this file
27 *      for any purpose is hereby granted without fee, provided that
28 *      the above copyright notice and this notice appears in all
29 *      copies, and that the name of i-cubed limited not be used in
30 *      advertising or publicity pertaining to distribution of the
31 *      software without specific, written prior permission.
32 *      i-cubed limited makes no representations about the suitability
33 *      of this software for any purpose.
34 *
35 *  Modifications for spooling console driver and control of memory layout
36 *  with linker command file by
37 *              Thomas Doerfler <td@imd.m.isar.de>
38 *  for these modifications:
39 *  COPYRIGHT (c) 1997 by IMD, Puchheim, Germany.
40 *
41 *  To anyone who acknowledges that this file is provided "AS IS"
42 *  without any express or implied warranty:
43 *      permission to use, copy, modify, and distribute this file
44 *      for any purpose is hereby granted without fee, provided that
45 *      the above copyright notice and this notice appears in all
46 *      copies. IMD makes no representations about the suitability
47 *      of this software for any purpose.
48 *
49 *  Derived from c/src/lib/libbsp/no_cpu/no_bsp/startup/bspstart.c:
50 *
51 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
52 *  On-Line Applications Research Corporation (OAR).
53 *
54 *  Modifications for PPC405GP by Dennis Ehlin
55 */
56
57#include <string.h>
58
59#include <bsp.h>
60#include <bsp/irq.h>
61#include <bsp/linker-symbols.h>
62#include <rtems/bspIo.h>
63#include <libcpu/cpuIdent.h>
64#include <libcpu/spr.h>
65#include <rtems/powerpc/powerpc.h>
66
67#include RTEMS_XPARAMETERS_H
68
69/* Symbols defined in linker command file */
70LINKER_SYMBOL(virtex_exc_vector_base);
71
72/*
73 *  Driver configuration parameters
74 */
75uint32_t   bsp_clicks_per_usec;
76uint32_t   bsp_timer_average_overhead; /* Average overhead of timer in ticks */
77uint32_t   bsp_timer_least_valid;      /* Least valid number from timer      */
78bool       bsp_timer_internal_clock;   /* TRUE, when timer runs with CPU clk */
79
80/*
81 *  bsp_start
82 *
83 *  This routine does the bulk of the system initialization.
84 */
85void bsp_start( void )
86{
87  /*
88   * Get CPU identification dynamically. Note that the get_ppc_cpu_type()
89   * function store the result in global variables
90   * so that it can be used latter...
91   */
92  get_ppc_cpu_type();
93  get_ppc_cpu_revision();
94
95  /*
96   *  initialize the device driver parameters
97   */
98
99  /* timebase register ticks/microsecond */
100  bsp_clicks_per_usec = (250000000 / 1000000);
101  bsp_timer_internal_clock  = true;
102  bsp_timer_average_overhead = 2;
103  bsp_timer_least_valid = 3;
104
105  /*
106   * Initialize default raw exception handlers.
107   */
108  ppc_exc_initialize_with_vector_base(
109    PPC_INTERRUPT_DISABLE_MASK_DEFAULT,
110    (uintptr_t) bsp_section_work_begin,
111    rtems_configuration_get_interrupt_stack_size(),
112    virtex_exc_vector_base
113  );
114  __asm__ volatile ("mtevpr %0" : : "r" (virtex_exc_vector_base));
115
116  /*
117   * Install our own set of exception vectors
118   */
119  BSP_rtems_irq_mng_init(0);
120}
121
122void BSP_ask_for_reset(void)
123{
124  printk("system stopped, press RESET");
125  while(1) {};
126}
127
128void BSP_panic(char *s)
129{
130  printk("%s PANIC %s\n",_RTEMS_version, s);
131  BSP_ask_for_reset();
132}
133
134void _BSP_Fatal_error(unsigned int v)
135{
136  printk("%s PANIC ERROR %x\n",_RTEMS_version, v);
137  BSP_ask_for_reset();
138}
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