| /* |
| * Copyright (c) 2011 Aeroflex Gaisler |
| * |
| * BSD license: |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| |
| /* The traptable has to be the first code in a boot PROM. */ |
| |
| #include <asm-leon/head.h> |
| |
| #define TRAP(H) mov %psr, %l0; sethi %hi(H), %l4; jmp %l4+%lo(H); nop; |
| #define TRAPL(H) mov %g0, %g4; sethi %hi(H), %g4; jmp %g4+%lo(H); nop; |
| #define TRAP_ENTRY(H) rd %psr, %l0; b H; rd %wim, %l3; nop; |
| /* srmmu trap */ |
| #define SRMMU_TFAULT rd %psr, %l0; rd %wim, %l3; b _srmmu_fault; mov 1, %l6; |
| #define SRMMU_DFAULT rd %psr, %l0; rd %wim, %l3; b _srmmu_fault; mov 9, %l6; |
| |
| #define WIM_INIT 2 |
| #ifdef _SOFT_FLOAT |
| #define PSR_INIT 0x0e0 |
| #else |
| #define PSR_INIT 0x10e0 |
| #endif |
| |
| #define NUMREGWINDOWS 8 |
| |
| /* Unexcpected trap will halt the processor by forcing it to error state */ |
| #define BAD_TRAP ta 0; nop; nop; nop; |
| |
| /* Software trap. Treat as BAD_TRAP */ |
| #define SOFT_TRAP BAD_TRAP |
| |
| .seg "text" |
| .global _trap_table, cpuinit, leonbare_irq_entry, _hardreset, _hardreset_mvt |
| .global _window_overflow, _window_underflow, _flush_windows, _fpdis_enable |
| .global start |
| start: |
| _trap_table: |
| TRAPL(_hardreset_mvt); ! 00 reset trap |
| SRMMU_TFAULT ! 01 instruction_access_exception (in mmu_asm.S) |
| BAD_TRAP; ! 02 illegal_instruction |
| BAD_TRAP; ! 03 priveleged_instruction |
| #ifndef _SOFT_FLOAT |
| TRAP(_fpdis_enable); ! 04 fp_disabled |
| #else |
| TRAP(_fpdis); ! 04 fp_disabled |
| #endif |
| #ifndef _FLAT |
| TRAP(_window_overflow); ! 05 window_overflow |
| TRAP(_window_underflow); ! 06 window_underflow |
| #else |
| BAD_TRAP; BAD_TRAP; |
| #endif |
| BAD_TRAP; ! 07 memory_address_not_aligned |
| BAD_TRAP; ! 08 fp_exception |
| SRMMU_DFAULT ! 09 data_access_exception (in mmu_asm.S) |
| BAD_TRAP; ! 0A tag_overflow |
| |
| BAD_TRAP; ! 0B undefined |
| BAD_TRAP; ! 0C undefined |
| BAD_TRAP; ! 0D undefined |
| BAD_TRAP; ! 0E undefined |
| BAD_TRAP; ! 0F undefined |
| BAD_TRAP; ! 10 undefined |
| |
| /* Interrupt entries */ |
| TRAP_ENTRY_INTERRUPT(1); ! 11 interrupt level 1 |
| TRAP_ENTRY_INTERRUPT(2); ! 12 interrupt level 2 |
| TRAP_ENTRY_INTERRUPT(3); ! 13 interrupt level 3 |
| TRAP_ENTRY_INTERRUPT(4); ! 14 interrupt level 4 |
| TRAP_ENTRY_INTERRUPT(5); ! 15 interrupt level 5 |
| TRAP_ENTRY_INTERRUPT(6); ! 16 interrupt level 6 |
| TRAP_ENTRY_INTERRUPT(7); ! 17 interrupt level 7 |
| TRAP_ENTRY_INTERRUPT(8); ! 18 interrupt level 8 |
| TRAP_ENTRY_INTERRUPT(9); ! 19 interrupt level 9 |
| TRAP_ENTRY_INTERRUPT(10); ! 1A interrupt level 1 |
| TRAP_ENTRY_INTERRUPT(11); ! 1B interrupt level 11 |
| TRAP_ENTRY_INTERRUPT(12); ! 1C interrupt level 12 |
| TRAP_ENTRY_INTERRUPT(13); ! 1D interrupt level 13 |
| TRAP_ENTRY_INTERRUPT(14); ! 1E interrupt level 14 |
| TRAP_ENTRY_INTERRUPT(15); ! 1F interrupt level 15 |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 20 - 23 undefined |
| BAD_TRAP; ! 24 cp_disabled |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 25 - 27 undefined |
| BAD_TRAP; ! 28 cp_exception |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 29 - 2B undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 2C - 2F undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 30 - 33 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 34 - 37 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 38 - 3B undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 3C - 3F undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 40 - 43 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 44 - 47 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 48 - 4B undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 4C - 4F undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 50 - 53 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 54 - 57 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 58 - 5B undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 5C - 5F undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 60 - 63 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 64 - 67 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 68 - 6B undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 6C - 6F undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 70 - 73 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 74 - 77 undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 78 - 7B undefined |
| BAD_TRAP; BAD_TRAP; BAD_TRAP; BAD_TRAP; ! 7C - 7F undefined |
| |
| /* Software traps */ |
| SOFT_TRAP; SOFT_TRAP; TRAP(_irqcall); ! 80 - 82 |
| #ifndef _FLAT |
| TRAP_ENTRY(_flush_windows) ! 83 |
| #else |
| SOFT_TRAP |
| #endif |
| SOFT_TRAP; ! 84 |
| TRAP(_irqcall_disableirq); ! 85 |
| SOFT_TRAP; SOFT_TRAP; ! 86 - 87 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 88 - 8B |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 8C - 8F |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 90 - 93 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 94 - 97 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 98 - 9B |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! 9C - 9F |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! A0 - A3 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! A4 - A7 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! A8 - AB |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! AC - AF |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! B0 - B3 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! B4 - B7 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! B8 - BB |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! BC - BF |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! C0 - C3 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! C4 - C7 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! C8 - CB |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! CC - CF |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! D0 - D3 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! D4 - D7 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! D8 - DB |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! DC - DF |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! E0 - E3 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! E4 - E7 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! E8 - EB |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! EC - EF |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! F0 - F3 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! F4 - F7 |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! F8 - FB |
| SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; SOFT_TRAP; ! FC - FF |
| |
| |
| |