Rev 3403 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1018 | decky | 1 | # |
| 2071 | jermar | 2 | # Copyright (c) 2006 Martin Decky |
| 3 | # Copyright (c) 2006 Jakub Jermar |
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| 1018 | decky | 4 | # All rights reserved. |
| 5 | # |
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| 6 | # Redistribution and use in source and binary forms, with or without |
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| 7 | # modification, are permitted provided that the following conditions |
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| 8 | # are met: |
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| 9 | # |
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| 10 | # - Redistributions of source code must retain the above copyright |
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| 11 | # notice, this list of conditions and the following disclaimer. |
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| 12 | # - Redistributions in binary form must reproduce the above copyright |
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| 13 | # notice, this list of conditions and the following disclaimer in the |
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| 14 | # documentation and/or other materials provided with the distribution. |
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| 15 | # - The name of the author may not be used to endorse or promote products |
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| 16 | # derived from this software without specific prior written permission. |
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| 17 | # |
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| 18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 28 | # |
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| 29 | |||
| 1791 | jermar | 30 | #include <stack.h> |
| 31 | #include <register.h> |
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| 1018 | decky | 32 | |
| 1972 | jermar | 33 | #define INITIAL_STACK_SIZE 8192 |
| 1783 | jermar | 34 | |
| 1972 | jermar | 35 | #define NWINDOWS 8 |
| 36 | |||
| 1773 | jermar | 37 | .register %g2, #scratch |
| 38 | .register %g3, #scratch |
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| 39 | .register %g6, #scratch |
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| 40 | .register %g7, #scratch |
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| 41 | |||
| 1771 | jermar | 42 | .section BOOTSTRAP, "ax" |
| 1018 | decky | 43 | |
| 44 | .global start |
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| 45 | start: |
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| 4348 | svoboda | 46 | ba %xcc, 1f |
| 1773 | jermar | 47 | nop |
| 48 | |||
| 49 | /* |
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| 50 | * This header forces SILO to load the image at 0x4000. |
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| 51 | * More precisely, SILO will think this is an old version of Linux. |
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| 52 | */ |
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| 53 | .ascii "HdrS" |
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| 54 | .word 0 |
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| 55 | .half 0 |
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| 3403 | svoboda | 56 | .half 0 |
| 57 | .half 0 |
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| 58 | .half 0 |
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| 59 | .global silo_ramdisk_image |
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| 60 | silo_ramdisk_image: |
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| 61 | .word 0 |
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| 62 | .global silo_ramdisk_size |
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| 63 | silo_ramdisk_size: |
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| 64 | .word 0 |
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| 1773 | jermar | 65 | |
| 66 | .align 8 |
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| 67 | 1: |
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| 1783 | jermar | 68 | /* |
| 1789 | jermar | 69 | * Disable interrupts and disable address masking. |
| 1783 | jermar | 70 | */ |
| 1906 | jermar | 71 | wrpr %g0, PSTATE_PRIV_BIT, %pstate |
| 1972 | jermar | 72 | |
| 73 | wrpr %g0, NWINDOWS - 2, %cansave ! set maximum saveable windows |
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| 74 | wrpr %g0, 0, %canrestore ! get rid of windows we will never need again |
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| 75 | wrpr %g0, 0, %otherwin ! make sure the window state is consistent |
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| 76 | wrpr %g0, NWINDOWS - 1, %cleanwin ! prevent needless clean_window traps for kernel |
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| 1783 | jermar | 77 | |
| 1906 | jermar | 78 | set initial_stack_top, %sp |
| 79 | add %sp, -STACK_BIAS, %sp |
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| 1773 | jermar | 80 | |
| 1783 | jermar | 81 | set ofw_cif, %l0 |
| 1773 | jermar | 82 | |
| 1789 | jermar | 83 | call ofw_init ! initialize OpenFirmware |
| 1773 | jermar | 84 | stx %o4, [%l0] |
| 1685 | decky | 85 | |
| 4348 | svoboda | 86 | ba %xcc, bootstrap |
| 1018 | decky | 87 | nop |
| 1791 | jermar | 88 | |
| 1792 | jermar | 89 | .align STACK_ALIGNMENT |
| 1791 | jermar | 90 | initial_stack: |
| 91 | .space INITIAL_STACK_SIZE |
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| 92 | initial_stack_top: |
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| 93 | .space STACK_WINDOW_SAVE_AREA_SIZE |