source: rtems/c/src/lib/libbsp/powerpc/t32mppc/startup/bspstart.c @ 585706a4

Last change on this file since 585706a4 was 585706a4, checked in by Sebastian Huber <sebastian.huber@…>, on Jul 28, 2017 at 12:42:53 PM

bsp/t32mppc: Add SMP support

  • Property mode set to 100644
File size: 1.8 KB
Line 
1/*
2 * Copyright (c) 2012-2014 embedded brains GmbH.  All rights reserved.
3 *
4 *  embedded brains GmbH
5 *  Dornierstr. 4
6 *  82178 Puchheim
7 *  Germany
8 *  <rtems@embedded-brains.de>
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.rtems.org/license/LICENSE.
13 */
14
15#include <rtems/config.h>
16#include <rtems/counter.h>
17
18#include <bsp.h>
19#include <bsp/vectors.h>
20#include <bsp/bootcard.h>
21#include <bsp/irq-generic.h>
22#include <bsp/linker-symbols.h>
23
24LINKER_SYMBOL(bsp_exc_vector_base);
25
26/*
27 * Configuration parameter for clock driver.  The Trace32 PowerPC simulator has
28 * an odd decrementer frequency.  The time base frequency is one tick per
29 * instruction.  The decrementer frequency is one tick per ten instructions.
30 * The clock driver assumes that the time base and decrementer frequencies are
31 * equal.  For now we simulate processor that issues 10000000 instructions per
32 * second.
33 */
34uint32_t bsp_time_base_frequency = 10000000 / 10;
35
36void BSP_panic(char *s)
37{
38  rtems_interrupt_level level;
39
40  rtems_interrupt_local_disable(level);
41  (void) level;
42
43  printk("%s PANIC %s\n", rtems_get_version_string(), s);
44
45  while (1) {
46    /* Do nothing */
47  }
48}
49
50void _BSP_Fatal_error(unsigned n)
51{
52  rtems_interrupt_level level;
53
54  rtems_interrupt_local_disable(level);
55  (void) level;
56
57  printk("%s PANIC ERROR %u\n", rtems_get_version_string(), n);
58
59  while (1) {
60    /* Do nothing */
61  }
62}
63
64void bsp_start(void)
65{
66  get_ppc_cpu_type();
67  get_ppc_cpu_revision();
68
69  rtems_counter_initialize_converter(bsp_time_base_frequency);
70
71  /* Initialize exception handler */
72  ppc_exc_initialize_with_vector_base(
73    (uintptr_t) bsp_section_work_begin,
74    rtems_configuration_get_interrupt_stack_size(),
75    bsp_exc_vector_base
76  );
77
78  /* Initalize interrupt support */
79  bsp_interrupt_initialize();
80}
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