Rev 1773 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1018 | decky | 1 | # |
| 2 | # Copyright (C) 2006 Martin Decky |
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| 3 | # All rights reserved. |
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| 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 | |||
| 1771 | jermar | 29 | #define INITIAL_STACK 0x0 |
| 1018 | decky | 30 | |
| 1783 | jermar | 31 | #define PSTATE_IE_BIT 2 |
| 32 | |||
| 1773 | jermar | 33 | .register %g2, #scratch |
| 34 | .register %g3, #scratch |
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| 35 | .register %g6, #scratch |
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| 36 | .register %g7, #scratch |
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| 37 | |||
| 1771 | jermar | 38 | .section BOOTSTRAP, "ax" |
| 1018 | decky | 39 | |
| 40 | .global start |
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| 41 | start: |
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| 1773 | jermar | 42 | b 1f |
| 43 | nop |
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| 44 | |||
| 45 | /* |
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| 46 | * This header forces SILO to load the image at 0x4000. |
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| 47 | * More precisely, SILO will think this is an old version of Linux. |
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| 48 | */ |
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| 49 | .ascii "HdrS" |
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| 50 | .word 0 |
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| 51 | .half 0 |
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| 52 | |||
| 53 | .align 8 |
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| 54 | 1: |
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| 55 | flushw |
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| 56 | |||
| 1783 | jermar | 57 | /* |
| 58 | * Disable interrupts. |
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| 59 | */ |
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| 60 | rdpr %pstate, %g2 |
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| 61 | and %g2, ~PSTATE_IE_BIT, %g2 ! mask the Interrupt Enable bit |
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| 62 | wrpr %g2, 0, %pstate |
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| 63 | |||
| 1771 | jermar | 64 | # TODO: set initial stack |
| 1773 | jermar | 65 | |
| 1783 | jermar | 66 | set ofw_cif, %l0 |
| 1773 | jermar | 67 | |
| 68 | call init ! initialize OpenFirmware |
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| 69 | stx %o4, [%l0] |
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| 1685 | decky | 70 | |
| 1771 | jermar | 71 | b bootstrap |
| 1018 | decky | 72 | nop |