1 | /** |
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2 | * @file |
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3 | * |
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4 | * @ingroup arm |
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5 | * |
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6 | * @brief ARM cache defines and implementation. |
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7 | */ |
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8 | |
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9 | /* |
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10 | * Copyright (c) 2009 |
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11 | * embedded brains GmbH |
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12 | * Obere Lagerstr. 30 |
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13 | * D-82178 Puchheim |
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14 | * Germany |
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15 | * <rtems@embedded-brains.de> |
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16 | * |
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17 | * The license and distribution terms for this file may be |
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18 | * found in the file LICENSE in this distribution or at |
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19 | * http://www.rtems.com/license/LICENSE. |
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20 | */ |
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21 | |
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22 | #ifndef LIBCPU_ARM_CACHE_H |
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23 | #define LIBCPU_ARM_CACHE_H |
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24 | |
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25 | #ifdef __ARM_ARCH_5TEJ__ |
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26 | #include <libcpu/arm-cp15.h> |
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27 | |
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28 | #define CPU_DATA_CACHE_ALIGNMENT 32 |
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29 | #define CPU_INSTRUCTION_CACHE_ALIGNMENT 32 |
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30 | |
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31 | static inline void _CPU_cache_flush_1_data_line(const void *d_addr) |
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32 | { |
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33 | arm_cp15_data_cache_clean_line(d_addr); |
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34 | } |
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35 | |
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36 | static inline void _CPU_cache_invalidate_1_data_line(const void *d_addr) |
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37 | { |
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38 | arm_cp15_data_cache_invalidate_line(d_addr); |
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39 | } |
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40 | |
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41 | static inline void _CPU_cache_freeze_data(void) |
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42 | { |
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43 | /* TODO */ |
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44 | } |
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45 | |
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46 | static inline void _CPU_cache_unfreeze_data(void) |
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47 | { |
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48 | /* TODO */ |
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49 | } |
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50 | |
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51 | static inline void _CPU_cache_invalidate_1_instruction_line(const void *d_addr) |
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52 | { |
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53 | arm_cp15_instruction_cache_invalidate_line(d_addr); |
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54 | } |
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55 | |
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56 | static inline void _CPU_cache_freeze_instruction(void) |
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57 | { |
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58 | /* TODO */ |
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59 | } |
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60 | |
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61 | static inline void _CPU_cache_unfreeze_instruction(void) |
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62 | { |
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63 | /* TODO */ |
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64 | } |
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65 | |
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66 | static inline void _CPU_cache_flush_entire_data(void) |
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67 | { |
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68 | arm_cp15_data_cache_test_and_clean(); |
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69 | } |
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70 | |
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71 | static inline void _CPU_cache_invalidate_entire_data(void) |
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72 | { |
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73 | arm_cp15_data_cache_invalidate(); |
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74 | } |
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75 | |
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76 | static inline void _CPU_cache_enable_data(void) |
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77 | { |
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78 | rtems_interrupt_level level; |
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79 | uint32_t ctrl; |
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80 | |
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81 | rtems_interrupt_disable(level); |
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82 | ctrl = arm_cp15_get_control(); |
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83 | ctrl |= ARM_CP15_CTRL_C; |
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84 | arm_cp15_set_control(ctrl); |
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85 | rtems_interrupt_enable(level); |
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86 | } |
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87 | |
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88 | static inline void _CPU_cache_disable_data(void) |
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89 | { |
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90 | rtems_interrupt_level level; |
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91 | uint32_t ctrl; |
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92 | |
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93 | rtems_interrupt_disable(level); |
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94 | ctrl = arm_cp15_get_control(); |
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95 | ctrl &= ~ARM_CP15_CTRL_C; |
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96 | arm_cp15_set_control(ctrl); |
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97 | rtems_interrupt_enable(level); |
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98 | |
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99 | arm_cp15_data_cache_test_and_clean_and_invalidate(); |
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100 | } |
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101 | |
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102 | static inline void _CPU_cache_invalidate_entire_instruction(void) |
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103 | { |
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104 | arm_cp15_instruction_cache_invalidate(); |
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105 | } |
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106 | |
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107 | static inline void _CPU_cache_enable_instruction(void) |
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108 | { |
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109 | rtems_interrupt_level level; |
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110 | uint32_t ctrl; |
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111 | |
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112 | rtems_interrupt_disable(level); |
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113 | ctrl = arm_cp15_get_control(); |
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114 | ctrl |= ARM_CP15_CTRL_I; |
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115 | arm_cp15_set_control(ctrl); |
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116 | rtems_interrupt_enable(level); |
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117 | } |
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118 | |
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119 | static inline void _CPU_cache_disable_instruction(void) |
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120 | { |
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121 | rtems_interrupt_level level; |
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122 | uint32_t ctrl; |
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123 | |
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124 | rtems_interrupt_disable(level); |
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125 | ctrl = arm_cp15_get_control(); |
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126 | ctrl &= ~ARM_CP15_CTRL_I; |
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127 | arm_cp15_set_control(ctrl); |
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128 | rtems_interrupt_enable(level); |
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129 | } |
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130 | #endif |
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131 | |
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132 | #endif /* LIBCPU_ARM_CACHE_H */ |
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