1 | /* |
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2 | * Copyright (c) 2011 Aeroflex Gaisler |
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3 | * |
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4 | * BSD license: |
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5 | * |
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6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
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7 | * of this software and associated documentation files (the "Software"), to deal |
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8 | * in the Software without restriction, including without limitation the rights |
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9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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10 | * copies of the Software, and to permit persons to whom the Software is |
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11 | * furnished to do so, subject to the following conditions: |
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12 | * |
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13 | * The above copyright notice and this permission notice shall be included in |
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14 | * all copies or substantial portions of the Software. |
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15 | * |
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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22 | * THE SOFTWARE. |
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23 | */ |
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24 | |
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25 | |
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26 | .section .text |
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27 | /* ------- */ |
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28 | .weak _hardreset_custom_weak |
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29 | .set _hardreset_custom_weak,_hardreset_custom_weak_dummy |
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30 | /* ------- */ |
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31 | .global _nwindows, _leon_version, _nwindows_min1 |
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32 | |
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33 | _hardreset_custom_weak_dummy: |
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34 | |
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35 | !'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' |
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36 | ! get nwindows and leon version |
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37 | |
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38 | mov %psr, %l3 |
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39 | srl %l3, 24, %g5 |
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40 | and %g5, 3, %g5 |
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41 | subcc %g5, 3, %g0 ! leon3: 3 |
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42 | bne 1f |
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43 | nop |
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44 | set _leon_version,%l0 |
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45 | set 3,%l1 |
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46 | st %l1,[%l0] |
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47 | mov %asr17, %g5 ! leon3 has nwindows in %asr17 |
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48 | ba 2f |
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49 | 1: |
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50 | /* other version */ |
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51 | 2: |
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52 | and %g5, 0x1f, %g5 |
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53 | set _nwindows_min1, %l3 |
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54 | st %g5, [%l3] |
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55 | add %g5,1,%g5 |
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56 | set _nwindows, %l3 |
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57 | st %g5, [%l3] |
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58 | set _nwindows_min2, %l3 |
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59 | sub %g5,2,%g5 |
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60 | st %g5, [%l3] |
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61 | |
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62 | !'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' |
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63 | |
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64 | retl |
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65 | nop |
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66 | |
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67 | !'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' |
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68 | .section .data |
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69 | .global _nwindows, _leon_version, _nwindows_min1, _nwindows_min2 |
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70 | _nwindows: |
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71 | .word 8 |
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72 | _nwindows_min1: |
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73 | .word 7 |
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74 | _nwindows_min2: |
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75 | .word 6 |
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76 | _leon_version: |
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77 | .word 3 |
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