[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 | #include <asm-leon/head.h> |
---|
| 27 | |
---|
| 28 | .section .text |
---|
| 29 | /* ------- */ |
---|
| 30 | .weak _hardreset_svt |
---|
| 31 | .set _hardreset_svt, __hardreset_svt |
---|
| 32 | /* ------- */ |
---|
| 33 | .global _hardreset, _hardreset_svt_real |
---|
| 34 | |
---|
| 35 | ! reset entry point for single vector trapping. Try enable svt |
---|
| 36 | _hardreset_svt_real: |
---|
| 37 | nop |
---|
| 38 | __hardreset_svt: |
---|
| 39 | mov %psr, %l3 |
---|
| 40 | srl %l3, 24, %g5 |
---|
| 41 | and %g5, 3, %g5 |
---|
| 42 | subcc %g5, 3, %g0 ! leon2: 0 or 2, leon3: 3 |
---|
| 43 | bne .L2 |
---|
| 44 | nop |
---|
| 45 | |
---|
| 46 | mov %asr17, %g5 ! set svt |
---|
| 47 | set 1<<13,%g1 |
---|
| 48 | or %g5,%g1,%g5 |
---|
| 49 | mov %g5, %asr17 |
---|
| 50 | nop; nop; nop |
---|
| 51 | mov %asr17,%g5 ! check svt |
---|
| 52 | andcc %g5, %g1, %g0 |
---|
| 53 | beq .L2 |
---|
| 54 | nop |
---|
| 55 | |
---|
| 56 | set _hardreset,%l3 |
---|
| 57 | jmp %l3 |
---|
| 58 | nop |
---|
| 59 | |
---|
| 60 | .L2: ta 0x0 ! no svt implemented (ether leon2 or svt != 1) |
---|
| 61 | nop |
---|
| 62 | |
---|