[8d830fae] | 1 | /** |
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| 2 | * @file |
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| 3 | * @ingroup sparc_leon2 |
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| 4 | * @brief LEON Spurious Trap Handler |
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| 5 | */ |
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| 6 | |
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[bec7ba52] | 7 | /* |
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| 8 | * LEON Spurious Trap Handler |
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| 9 | * |
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[44b06ca] | 10 | * This is just enough of a trap handler to let us know what |
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[bec7ba52] | 11 | * the likely source of the trap was. |
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| 12 | * |
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[44b06ca] | 13 | * Developed as part of the port of RTEMS to the LEON implementation |
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| 14 | * of the SPARC by On-Line Applications Research Corporation (OAR) |
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[bec7ba52] | 15 | * under contract to the European Space Agency (ESA). |
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| 16 | * |
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| 17 | * COPYRIGHT (c) 1995. European Space Agency. |
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| 18 | * |
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| 19 | * This terms of the RTEMS license apply to this file. |
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| 20 | */ |
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| 21 | |
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| 22 | #include <bsp.h> |
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[94bbe857] | 23 | #include <rtems/bspIo.h> |
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[bec7ba52] | 24 | |
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[815994f] | 25 | void _BSP_Exception_frame_print( const CPU_Exception_frame *frame ) |
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[bec7ba52] | 26 | { |
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[815994f] | 27 | uint32_t trap; |
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| 28 | uint32_t real_trap; |
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| 29 | const CPU_Interrupt_frame *isf; |
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[bec7ba52] | 30 | |
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[815994f] | 31 | trap = frame->trap; |
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[bec7ba52] | 32 | real_trap = SPARC_REAL_TRAP_NUMBER(trap); |
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[815994f] | 33 | isf = frame->isf; |
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[bec7ba52] | 34 | |
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[94da794] | 35 | printk( "Unexpected trap (%2d) at address 0x%08x\n", real_trap, isf->tpc); |
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[bec7ba52] | 36 | |
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| 37 | switch (real_trap) { |
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| 38 | |
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| 39 | /* |
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| 40 | * First the ones defined by the basic architecture |
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| 41 | */ |
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| 42 | |
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[44b06ca] | 43 | case 0x00: |
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[94bbe857] | 44 | printk( "reset\n" ); |
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[bec7ba52] | 45 | break; |
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[44b06ca] | 46 | case 0x01: |
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[94bbe857] | 47 | printk( "instruction access exception\n" ); |
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[bec7ba52] | 48 | break; |
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[44b06ca] | 49 | case 0x02: |
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[94bbe857] | 50 | printk( "illegal instruction\n" ); |
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[bec7ba52] | 51 | break; |
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[44b06ca] | 52 | case 0x03: |
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[94bbe857] | 53 | printk( "privileged instruction\n" ); |
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[bec7ba52] | 54 | break; |
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[44b06ca] | 55 | case 0x04: |
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[94bbe857] | 56 | printk( "fp disabled\n" ); |
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[bec7ba52] | 57 | break; |
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[44b06ca] | 58 | case 0x07: |
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[94bbe857] | 59 | printk( "memory address not aligned\n" ); |
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[bec7ba52] | 60 | break; |
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[44b06ca] | 61 | case 0x08: |
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[94bbe857] | 62 | printk( "fp exception\n" ); |
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[bec7ba52] | 63 | break; |
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[44b06ca] | 64 | case 0x09: |
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[65332b4] | 65 | printk("data access exception at 0x%08x\n", LEON_REG.Failed_Address ); |
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[bec7ba52] | 66 | break; |
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[44b06ca] | 67 | case 0x0A: |
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[94bbe857] | 68 | printk( "tag overflow\n" ); |
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[bec7ba52] | 69 | break; |
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| 70 | |
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| 71 | /* |
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| 72 | * Then the ones defined by the LEON in particular |
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| 73 | */ |
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| 74 | |
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| 75 | case LEON_TRAP_TYPE( LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR ): |
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[94bbe857] | 76 | printk( "LEON_INTERRUPT_CORRECTABLE_MEMORY_ERROR\n" ); |
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[bec7ba52] | 77 | break; |
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| 78 | case LEON_TRAP_TYPE( LEON_INTERRUPT_UART_2_RX_TX ): |
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[94bbe857] | 79 | printk( "LEON_INTERRUPT_UART_2_RX_TX\n" ); |
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[bec7ba52] | 80 | break; |
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| 81 | case LEON_TRAP_TYPE( LEON_INTERRUPT_UART_1_RX_TX ): |
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[94bbe857] | 82 | printk( "LEON_INTERRUPT_UART_1_RX_TX\n" ); |
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[bec7ba52] | 83 | break; |
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| 84 | case LEON_TRAP_TYPE( LEON_INTERRUPT_EXTERNAL_0 ): |
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[94bbe857] | 85 | printk( "LEON_INTERRUPT_EXTERNAL_0\n" ); |
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[bec7ba52] | 86 | break; |
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| 87 | case LEON_TRAP_TYPE( LEON_INTERRUPT_EXTERNAL_1 ): |
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[94bbe857] | 88 | printk( "LEON_INTERRUPT_EXTERNAL_1\n" ); |
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[bec7ba52] | 89 | break; |
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| 90 | case LEON_TRAP_TYPE( LEON_INTERRUPT_EXTERNAL_2 ): |
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[94bbe857] | 91 | printk( "LEON_INTERRUPT_EXTERNAL_2\n" ); |
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[bec7ba52] | 92 | break; |
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| 93 | case LEON_TRAP_TYPE( LEON_INTERRUPT_EXTERNAL_3 ): |
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[94bbe857] | 94 | printk( "LEON_INTERRUPT_EXTERNAL_3\n" ); |
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[bec7ba52] | 95 | break; |
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| 96 | case LEON_TRAP_TYPE( LEON_INTERRUPT_TIMER1 ): |
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[94bbe857] | 97 | printk( "LEON_INTERRUPT_TIMER1\n" ); |
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[bec7ba52] | 98 | break; |
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| 99 | case LEON_TRAP_TYPE( LEON_INTERRUPT_TIMER2 ): |
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[94bbe857] | 100 | printk( "LEON_INTERRUPT_TIMER2\n" ); |
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[bec7ba52] | 101 | break; |
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| 102 | |
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| 103 | default: |
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| 104 | break; |
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| 105 | } |
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[815994f] | 106 | } |
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[bec7ba52] | 107 | |
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[815994f] | 108 | rtems_isr bsp_spurious_handler( |
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| 109 | rtems_vector_number trap, |
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| 110 | CPU_Interrupt_frame *isf |
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| 111 | ) |
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| 112 | { |
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| 113 | CPU_Exception_frame frame = { |
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| 114 | .trap = trap, |
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| 115 | .isf = isf |
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| 116 | }; |
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[bec7ba52] | 117 | |
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[815994f] | 118 | rtems_fatal( |
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| 119 | RTEMS_FATAL_SOURCE_EXCEPTION, |
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| 120 | (rtems_fatal_code) &frame |
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| 121 | ); |
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[bec7ba52] | 122 | } |
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| 123 | |
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| 124 | /* |
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| 125 | * bsp_spurious_initialize |
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| 126 | * |
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| 127 | * Install the spurious handler for most traps. Note that set_vector() |
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| 128 | * will unmask the corresponding asynchronous interrupt, so the initial |
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| 129 | * interrupt mask is restored after the handlers are installed. |
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| 130 | */ |
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| 131 | |
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| 132 | void bsp_spurious_initialize() |
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| 133 | { |
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| 134 | uint32_t trap; |
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| 135 | uint32_t level; |
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| 136 | uint32_t mask; |
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| 137 | |
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| 138 | level = sparc_disable_interrupts(); |
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| 139 | mask = LEON_REG.Interrupt_Mask; |
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| 140 | |
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| 141 | for ( trap=0 ; trap<256 ; trap++ ) { |
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| 142 | |
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| 143 | /* |
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| 144 | * Skip window overflow, underflow, and flush as well as software |
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| 145 | * trap 0 which we will use as a shutdown. Also avoid trap 0x70 - 0x7f |
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| 146 | * which cannot happen and where some of the space is used to pass |
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| 147 | * paramaters to the program. |
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| 148 | */ |
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| 149 | |
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| 150 | if (( trap == 5 || trap == 6 ) || |
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[44b06ca] | 151 | (( trap >= 0x11 ) && ( trap <= 0x1f )) || |
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[bec7ba52] | 152 | (( trap >= 0x70 ) && ( trap <= 0x83 ))) |
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| 153 | continue; |
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| 154 | |
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| 155 | set_vector( |
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| 156 | (rtems_isr_entry) bsp_spurious_handler, |
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| 157 | SPARC_SYNCHRONOUS_TRAP( trap ), |
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| 158 | 1 |
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| 159 | ); |
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| 160 | } |
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| 161 | |
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| 162 | LEON_REG.Interrupt_Mask = mask; |
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| 163 | sparc_enable_interrupts(level); |
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| 164 | |
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| 165 | } |
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