source: rtems/c/src/lib/libbsp/powerpc/t32mppc/startup/bspstart.c @ b1e8a58

4.11
Last change on this file since b1e8a58 was b1e8a58, checked in by Sebastian Huber <sebastian.huber@…>, on Nov 14, 2012 at 8:57:55 AM

bsps/powerpc: Exception initialization error is fatal

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