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| 1 | # |
1 | # |
| 2 | # Copyright (C) 2006 Martin Decky |
2 | # Copyright (C) 2006 Martin Decky |
| - | 3 | # Copyright (C) 2006 Jakub Jermar |
|
| 3 | # All rights reserved. |
4 | # All rights reserved. |
| 4 | # |
5 | # |
| 5 | # Redistribution and use in source and binary forms, with or without |
6 | # Redistribution and use in source and binary forms, with or without |
| 6 | # modification, are permitted provided that the following conditions |
7 | # modification, are permitted provided that the following conditions |
| 7 | # are met: |
8 | # are met: |
| 8 | # |
9 | # |
| 9 | # - Redistributions of source code must retain the above copyright |
10 | # - Redistributions of source code must retain the above copyright |
| 10 | # notice, this list of conditions and the following disclaimer. |
11 | # notice, this list of conditions and the following disclaimer. |
| 11 | # - Redistributions in binary form must reproduce the above copyright |
12 | # - Redistributions in binary form must reproduce the above copyright |
| 12 | # notice, this list of conditions and the following disclaimer in the |
13 | # notice, this list of conditions and the following disclaimer in the |
| 13 | # documentation and/or other materials provided with the distribution. |
14 | # documentation and/or other materials provided with the distribution. |
| 14 | # - The name of the author may not be used to endorse or promote products |
15 | # - The name of the author may not be used to endorse or promote products |
| 15 | # derived from this software without specific prior written permission. |
16 | # derived from this software without specific prior written permission. |
| 16 | # |
17 | # |
| 17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | # |
28 | # |
| 28 | 29 | ||
| 29 | #include <stack.h> |
30 | #include <stack.h> |
| 30 | #include <register.h> |
31 | #include <register.h> |
| 31 | 32 | ||
| 32 | #define INITIAL_STACK_SIZE 1024 |
33 | #define INITIAL_STACK_SIZE 1024 |
| 33 | 34 | ||
| 34 | .register %g2, #scratch |
35 | .register %g2, #scratch |
| 35 | .register %g3, #scratch |
36 | .register %g3, #scratch |
| 36 | .register %g6, #scratch |
37 | .register %g6, #scratch |
| 37 | .register %g7, #scratch |
38 | .register %g7, #scratch |
| 38 | 39 | ||
| 39 | .section BOOTSTRAP, "ax" |
40 | .section BOOTSTRAP, "ax" |
| 40 | 41 | ||
| 41 | .global start |
42 | .global start |
| 42 | start: |
43 | start: |
| 43 | b 1f |
44 | b 1f |
| 44 | nop |
45 | nop |
| 45 | 46 | ||
| 46 | /* |
47 | /* |
| 47 | * This header forces SILO to load the image at 0x4000. |
48 | * This header forces SILO to load the image at 0x4000. |
| 48 | * More precisely, SILO will think this is an old version of Linux. |
49 | * More precisely, SILO will think this is an old version of Linux. |
| 49 | */ |
50 | */ |
| 50 | .ascii "HdrS" |
51 | .ascii "HdrS" |
| 51 | .word 0 |
52 | .word 0 |
| 52 | .half 0 |
53 | .half 0 |
| 53 | 54 | ||
| 54 | .align 8 |
55 | .align 8 |
| 55 | 1: |
56 | 1: |
| 56 | flushw |
57 | flushw |
| 57 | 58 | ||
| 58 | /* |
59 | /* |
| 59 | * Disable interrupts and disable address masking. |
60 | * Disable interrupts and disable address masking. |
| 60 | */ |
61 | */ |
| 61 | wrpr %g0, PSTATE_PRIV_BIT, %pstate |
62 | wrpr %g0, PSTATE_PRIV_BIT, %pstate |
| 62 | 63 | ||
| 63 | set initial_stack_top, %sp |
64 | set initial_stack_top, %sp |
| 64 | add %sp, -STACK_BIAS, %sp |
65 | add %sp, -STACK_BIAS, %sp |
| 65 | 66 | ||
| 66 | set ofw_cif, %l0 |
67 | set ofw_cif, %l0 |
| 67 | 68 | ||
| 68 | call ofw_init ! initialize OpenFirmware |
69 | call ofw_init ! initialize OpenFirmware |
| 69 | stx %o4, [%l0] |
70 | stx %o4, [%l0] |
| 70 | 71 | ||
| 71 | b bootstrap |
72 | b bootstrap |
| 72 | nop |
73 | nop |
| 73 | 74 | ||
| 74 | .align STACK_ALIGNMENT |
75 | .align STACK_ALIGNMENT |
| 75 | initial_stack: |
76 | initial_stack: |
| 76 | .space INITIAL_STACK_SIZE |
77 | .space INITIAL_STACK_SIZE |
| 77 | initial_stack_top: |
78 | initial_stack_top: |
| 78 | .space STACK_WINDOW_SAVE_AREA_SIZE |
79 | .space STACK_WINDOW_SAVE_AREA_SIZE |
| 79 | 80 | ||