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1018 | decky | 1 | # |
2071 | jermar | 2 | # Copyright (c) 2006 Martin Decky |
1018 | decky | 3 | # All rights reserved. |
4 | # |
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5 | # Redistribution and use in source and binary forms, with or without |
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6 | # modification, are permitted provided that the following conditions |
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7 | # are met: |
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8 | # |
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9 | # - Redistributions of source code must retain the above copyright |
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10 | # notice, this list of conditions and the following disclaimer. |
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11 | # - Redistributions in binary form must reproduce the above copyright |
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12 | # notice, this list of conditions and the following disclaimer in the |
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13 | # documentation and/or other materials provided with the distribution. |
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14 | # - The name of the author may not be used to endorse or promote products |
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15 | # derived from this software without specific prior written permission. |
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16 | # |
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17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | # |
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28 | |||
29 | #include "regname.h" |
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30 | |||
3911 | decky | 31 | #define INITIAL_STACK 0x80040000 |
32 | #define MSIM_DORDER_ADDRESS 0x90000004 |
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1018 | decky | 33 | |
34 | .set noat |
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35 | .set noreorder |
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36 | .set nomacro |
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37 | |||
38 | .section BOOTSTRAP |
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39 | |||
40 | .global start |
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41 | start: |
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1685 | decky | 42 | |
3911 | decky | 43 | #ifdef MACHINE_msim |
44 | /* Read dorder value */ |
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45 | la $k0, MSIM_DORDER_ADDRESS |
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46 | lw $k0, ($k0) |
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47 | |||
48 | /* If we are not running on BSP |
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49 | end in an infinite loop */ |
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50 | beq $k0, $zero, bsp |
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1018 | decky | 51 | nop |
3911 | decky | 52 | |
53 | loop: |
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54 | j loop |
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55 | nop |
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56 | |||
57 | #endif |
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58 | |||
59 | bsp: |
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60 | /* Setup initial stack */ |
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61 | lui $sp, INITIAL_STACK >> 16 |
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62 | ori $sp, $sp, INITIAL_STACK & 0xffff |
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63 | |||
64 | j bootstrap |
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65 | nop |