[444] | 1 | /* |
---|
| 2 | * Copyright (c) 2011 Aeroflex Gaisler |
---|
| 3 | * |
---|
| 4 | * BSD license: |
---|
| 5 | * |
---|
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
---|
| 7 | * of this software and associated documentation files (the "Software"), to deal |
---|
| 8 | * in the Software without restriction, including without limitation the rights |
---|
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
---|
| 10 | * copies of the Software, and to permit persons to whom the Software is |
---|
| 11 | * furnished to do so, subject to the following conditions: |
---|
| 12 | * |
---|
| 13 | * The above copyright notice and this permission notice shall be included in |
---|
| 14 | * all copies or substantial portions of the Software. |
---|
| 15 | * |
---|
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
---|
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
---|
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
---|
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
---|
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
---|
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
---|
| 22 | * THE SOFTWARE. |
---|
| 23 | */ |
---|
| 24 | |
---|
| 25 | |
---|
| 26 | /* The traptable has to be the first code in a boot PROM. */ |
---|
| 27 | |
---|
| 28 | #include <asm-leon/head.h> |
---|
| 29 | |
---|
| 30 | #define TRAP(H) mov %psr, %l0; sethi %hi(H), %l4; jmp %l4+%lo(H); nop; |
---|
| 31 | #define TRAPL(H) mov %g0, %g4; sethi %hi(H), %g4; jmp %g4+%lo(H); nop; |
---|
| 32 | #define TRAP_ENTRY(H) rd %psr, %l0; b H; rd %wim, %l3; nop; |
---|
| 33 | /* srmmu trap */ |
---|
| 34 | #define SRMMU_TFAULT rd %psr, %l0; rd %wim, %l3; b _srmmu_fault; mov 1, %l6; |
---|
| 35 | #define SRMMU_DFAULT rd %psr, %l0; rd %wim, %l3; b _srmmu_fault; mov 9, %l6; |
---|
| 36 | |
---|
| 37 | #define WIM_INIT 2 |
---|
| 38 | #ifdef _SOFT_FLOAT |
---|
| 39 | #define PSR_INIT 0x0e0 |
---|
| 40 | #else |
---|
| 41 | #define PSR_INIT 0x10e0 |
---|
| 42 | #endif |
---|
| 43 | |
---|
| 44 | #define NUMREGWINDOWS 8 |
---|
| 45 | |
---|
| 46 | /* Unexcpected trap will halt the processor by forcing it to error state */ |
---|
| 47 | #define BAD_TRAP ta 0; nop; nop; nop; |
---|
| 48 | |
---|
| 49 | /* Software trap. Treat as BAD_TRAP */ |
---|
| 50 | #define SOFT_TRAP BAD_TRAP |
---|
| 51 | |
---|
| 52 | .seg "text" |
---|
| 53 | .global _trap_table, cpuinit, leonbare_irq_entry, _hardreset, _hardreset_mvt |
---|
| 54 | .global _window_overflow, _window_underflow, _flush_windows, _fpdis_enable |
---|
| 55 | .global start |
---|
| 56 | start: |
---|
| 57 | _trap_table: |
---|
| 58 | TRAPL(_hardreset_mvt); ! 00 reset trap |
---|
| 59 | SRMMU_TFAULT ! 01 instruction_access_exception (in mmu_asm.S) |
---|
| 60 | BAD_TRAP; ! 02 illegal_instruction |
---|
| 61 | BAD_TRAP; ! 03 priveleged_instruction |
---|
| 62 | #ifndef _SOFT_FLOAT |
---|
| 63 | TRAP(_fpdis_enable); ! 04 fp_disabled |
---|
| 64 | #else |
---|
| 65 | TRAP(_fpdis); ! 04 fp_disabled |
---|
| 66 | #endif |
---|
| 67 | #ifndef _FLAT |
---|
| 68 | TRAP(_window_overflow); ! 05 window_overflow |
---|
| 69 | TRAP(_window_underflow); ! 06 window_underflow |
---|
| 70 | #else |
---|
| 71 | BAD_TRAP; BAD_TRAP; |
---|
| 72 | #endif |
---|
| 73 | BAD_TRAP; ! 07 memory_address_not_aligned |
---|
| 74 | BAD_TRAP; ! 08 fp_exception |
---|
| 75 | SRMMU_DFAULT ! 09 data_access_exception (in mmu_asm.S) |
---|
| 76 | BAD_TRAP; ! 0A tag_overflow |
---|
| 77 | |
---|
| 78 | BAD_TRAP; ! 0B undefined |
---|
| 79 | BAD_TRAP; ! 0C undefined |
---|
| 80 | BAD_TRAP; ! 0D undefined |
---|
| 81 | BAD_TRAP; ! 0E undefined |
---|
| 82 | BAD_TRAP; ! 0F undefined |
---|
| 83 | BAD_TRAP; ! 10 undefined |
---|
| 84 | |
---|
| 85 | /* Interrupt entries */ |
---|
| 86 | TRAP_ENTRY_INTERRUPT(1); ! 11 interrupt level 1 |
---|
| 87 | TRAP_ENTRY_INTERRUPT(2); ! 12 interrupt level 2 |
---|
| 88 | TRAP_ENTRY_INTERRUPT(3); ! 13 interrupt level 3 |
---|
| 89 | TRAP_ENTRY_INTERRUPT(4); ! 14 interrupt level 4 |
---|
| 90 | TRAP_ENTRY_INTERRUPT(5); ! 15 interrupt level 5 |
---|
| 91 | TRAP_ENTRY_INTERRUPT(6); ! 16 interrupt level 6 |
---|
| 92 | TRAP_ENTRY_INTERRUPT(7); ! 17 interrupt level 7 |
---|
| 93 | TRAP_ENTRY_INTERRUPT(8); ! 18 interrupt level 8 |
---|
| 94 | TRAP_ENTRY_INTERRUPT(9); ! 19 interrupt level 9 |
---|
| 95 | TRAP_ENTRY_INTERRUPT(10); ! 1A interrupt level 1 |
---|
| 96 | TRAP_ENTRY_INTERRUPT(11); ! 1B interrupt level 11 |
---|
| 97 | TRAP_ENTRY_INTERRUPT(12); ! 1C interrupt level 12 |
---|
| 98 | TRAP_ENTRY_INTERRUPT(13); ! 1D interrupt level 13 |
---|
| 99 | TRAP_ENTRY_INTERRUPT(14); ! 1E interrupt level 14 |
---|
| 100 | TRAP_ENTRY_INTERRUPT(15); ! 1F interrupt level 15 |
---|
| 101 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 20 - 23 undefined |
---|
| 102 | BAD_TRAP; ! 24 cp_disabled |
---|
| 103 | BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 25 - 27 undefined |
---|
| 104 | BAD_TRAP; ! 28 cp_exception |
---|
| 105 | BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 29 - 2B undefined |
---|
| 106 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 2C - 2F undefined |
---|
| 107 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 30 - 33 undefined |
---|
| 108 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 34 - 37 undefined |
---|
| 109 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 38 - 3B undefined |
---|
| 110 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 3C - 3F undefined |
---|
| 111 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 40 - 43 undefined |
---|
| 112 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 44 - 47 undefined |
---|
| 113 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 48 - 4B undefined |
---|
| 114 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 4C - 4F undefined |
---|
| 115 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 50 - 53 undefined |
---|
| 116 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 54 - 57 undefined |
---|
| 117 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 58 - 5B undefined |
---|
| 118 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 5C - 5F undefined |
---|
| 119 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 60 - 63 undefined |
---|
| 120 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 64 - 67 undefined |
---|
| 121 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 68 - 6B undefined |
---|
| 122 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 6C - 6F undefined |
---|
| 123 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 70 - 73 undefined |
---|
| 124 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 74 - 77 undefined |
---|
| 125 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 78 - 7B undefined |
---|
| 126 | BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 7C - 7F undefined |
---|
| 127 | |
---|
| 128 | /* Software traps */ |
---|
| 129 | SOFT_TRAP; SOFT_TRAP; TRAP(_irqcall); ! 80 - 82 |
---|
| 130 | #ifndef _FLAT |
---|
| 131 | TRAP_ENTRY(_flush_windows) ! 83 |
---|
| 132 | #else |
---|
| 133 | SOFT_TRAP |
---|
| 134 | #endif |
---|
| 135 | SOFT_TRAP; ! 84 |
---|
| 136 | TRAP(_irqcall_disableirq); ! 85 |
---|
| 137 | SOFT_TRAP; SOFT_TRAP; ! 86 - 87 |
---|
| 138 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 88 - 8B |
---|
| 139 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 8C - 8F |
---|
| 140 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 90 - 93 |
---|
| 141 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 94 - 97 |
---|
| 142 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 98 - 9B |
---|
| 143 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 9C - 9F |
---|
| 144 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! A0 - A3 |
---|
| 145 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! A4 - A7 |
---|
| 146 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! A8 - AB |
---|
| 147 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! AC - AF |
---|
| 148 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! B0 - B3 |
---|
| 149 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! B4 - B7 |
---|
| 150 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! B8 - BB |
---|
| 151 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! BC - BF |
---|
| 152 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! C0 - C3 |
---|
| 153 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! C4 - C7 |
---|
| 154 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! C8 - CB |
---|
| 155 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! CC - CF |
---|
| 156 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! D0 - D3 |
---|
| 157 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! D4 - D7 |
---|
| 158 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! D8 - DB |
---|
| 159 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! DC - DF |
---|
| 160 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! E0 - E3 |
---|
| 161 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! E4 - E7 |
---|
| 162 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! E8 - EB |
---|
| 163 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! EC - EF |
---|
| 164 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! F0 - F3 |
---|
| 165 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! F4 - F7 |
---|
| 166 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! F8 - FB |
---|
| 167 | SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! FC - FF |
---|
| 168 | |
---|
| 169 | |
---|
| 170 | |
---|