1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup ppc_exc |
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5 | * |
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6 | * @brief PowerPC Exceptions implementation. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (C) 1999 Eric Valette (valette@crf.canon.fr) |
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11 | * Canon Centre Recherche France. |
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12 | * |
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13 | * Copyright (C) 2009 embedded brains GmbH. |
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14 | * |
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15 | * Enhanced by Jay Kulpinski <jskulpin@eng01.gdds.com> |
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16 | * to support 603, 603e, 604, 604e exceptions |
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17 | * |
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18 | * Moved to "libcpu/powerpc/new-exceptions" and consolidated |
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19 | * by Thomas Doerfler <Thomas.Doerfler@embedded-brains.de> |
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20 | * to be common for all PPCs with new exceptions. |
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21 | * |
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22 | * Derived from file "libcpu/powerpc/new-exceptions/raw_exception.c". |
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23 | * |
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24 | * The license and distribution terms for this file may be |
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25 | * found in found in the file LICENSE in this distribution or at |
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26 | * http://www.rtems.com/license/LICENSE. |
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27 | * |
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28 | * $Id$ |
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29 | */ |
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30 | |
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31 | #include <rtems.h> |
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32 | |
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33 | #include <bsp/vectors.h> |
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34 | |
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35 | bool bsp_exceptions_in_RAM = true; |
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36 | |
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37 | uint32_t ppc_exc_vector_base = 0; |
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38 | |
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39 | /* |
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40 | * XXX: These values are choosen to directly generate the vector offsets for an |
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41 | * e200z1 which has hard wired IVORs (IVOR0=0x00, IVOR1=0x10, IVOR2=0x20, ...). |
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42 | */ |
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43 | static const uint8_t ivor_values [] = { |
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44 | [ASM_BOOKE_CRIT_VECTOR] = 0, |
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45 | [ASM_MACH_VECTOR] = 1, |
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46 | [ASM_PROT_VECTOR] = 2, |
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47 | [ASM_ISI_VECTOR] = 3, |
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48 | [ASM_EXT_VECTOR] = 4, |
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49 | [ASM_ALIGN_VECTOR] = 5, |
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50 | [ASM_PROG_VECTOR] = 6, |
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51 | [ASM_FLOAT_VECTOR] = 7, |
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52 | [ASM_SYS_VECTOR] = 8, |
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53 | [ASM_BOOKE_APU_VECTOR] = 9, |
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54 | [ASM_BOOKE_DEC_VECTOR] = 10, |
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55 | [ASM_BOOKE_FIT_VECTOR] = 11, |
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56 | [ASM_BOOKE_WDOG_VECTOR] = 12, |
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57 | [ASM_BOOKE_DTLBMISS_VECTOR] = 13, |
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58 | [ASM_BOOKE_ITLBMISS_VECTOR] = 14, |
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59 | [ASM_BOOKE_DEBUG_VECTOR] = 15, |
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60 | [ASM_E500_SPE_UNAVAILABLE_VECTOR] = 16, |
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61 | [ASM_E500_EMB_FP_DATA_VECTOR] = 17, |
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62 | [ASM_E500_EMB_FP_ROUND_VECTOR] = 18, |
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63 | [ASM_E500_PERFMON_VECTOR] = 19 |
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64 | }; |
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65 | |
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66 | void *ppc_exc_vector_address(unsigned vector) |
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67 | { |
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68 | uintptr_t vector_base = 0xfff00000; |
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69 | uintptr_t vector_offset = vector << 8; |
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70 | |
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71 | if (ppc_cpu_has_altivec()) { |
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72 | if (vector == ASM_60X_VEC_VECTOR) { |
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73 | vector_offset = ASM_60X_VEC_VECTOR_OFFSET; |
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74 | } |
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75 | } |
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76 | |
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77 | if (ppc_cpu_is(PPC_405)) { |
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78 | switch (vector) { |
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79 | case ASM_BOOKE_FIT_VECTOR: |
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80 | vector_offset = ASM_PPC405_FIT_VECTOR_OFFSET; |
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81 | break; |
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82 | case ASM_BOOKE_WDOG_VECTOR: |
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83 | vector_offset = ASM_PPC405_WDOG_VECTOR_OFFSET; |
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84 | break; |
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85 | case ASM_TRACE_VECTOR: |
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86 | vector_offset = ASM_PPC405_TRACE_VECTOR_OFFSET; |
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87 | break; |
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88 | case ASM_PPC405_APU_UNAVAIL_VECTOR: |
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89 | vector_offset = ASM_60X_VEC_VECTOR_OFFSET; |
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90 | default: |
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91 | break; |
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92 | } |
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93 | } |
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94 | |
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95 | if ( |
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96 | ppc_cpu_is_bookE() == PPC_BOOKE_STD |
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97 | || ppc_cpu_is_bookE() == PPC_BOOKE_E500 |
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98 | ) { |
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99 | if (vector < sizeof(ivor_values) / sizeof(ivor_values [0])) { |
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100 | vector_offset = ((uintptr_t) ivor_values [vector]) << 4; |
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101 | } else { |
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102 | vector_offset = 0; |
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103 | } |
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104 | } |
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105 | |
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106 | if (bsp_exceptions_in_RAM) { |
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107 | vector_base = ppc_exc_vector_base; |
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108 | } |
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109 | |
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110 | return (void *) (vector_base + vector_offset); |
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111 | } |
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