| 1 | // |
| 2 | // Authors: Wolfgang Spraul <wolfgang@sharism.cc> |
| 3 | // |
| 4 | // This program is free software; you can redistribute it and/or |
| 5 | // modify it under the terms of the GNU General Public License |
| 6 | // as published by the Free Software Foundation; either version |
| 7 | // 3 of the License, or (at your option) any later version. |
| 8 | // |
| 9 | |
| 10 | .text |
| 11 | .extern c_main |
| 12 | .globl _start |
| 13 | .set noreorder |
| 14 | |
| 15 | _start: |
| 16 | b real_start |
| 17 | nop |
| 18 | // 8 words for firmware parameters (0x80002008) |
| 19 | .word 0x0 |
| 20 | .word 0x0 |
| 21 | .word 0x0 |
| 22 | .word 0x0 |
| 23 | .word 0x0 |
| 24 | .word 0x0 |
| 25 | .word 0x0 |
| 26 | .word 0x0 |
| 27 | |
| 28 | real_start: |
| 29 | li $8, 0x0040FC04 |
| 30 | mtc0 $8, $12 // CP0_STATUS |
| 31 | |
| 32 | li $9, 0x00800000 |
| 33 | mtc0 $9, $13 // CP0_CAUSE |
| 34 | |
| 35 | la $29, 0x80004000 // setup stack (sp) |
| 36 | j c_main |
| 37 | nop |
| 38 | |
| 39 | .set reorder |
| 40 | |
