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| 1 | # |
1 | # |
| 2 | # Copyright (C) 2005 Jakub Jermar |
2 | # Copyright (C) 2005 Jakub Jermar |
| 3 | # All rights reserved. |
3 | # All rights reserved. |
| 4 | # |
4 | # |
| 5 | # Redistribution and use in source and binary forms, with or without |
5 | # Redistribution and use in source and binary forms, with or without |
| 6 | # modification, are permitted provided that the following conditions |
6 | # modification, are permitted provided that the following conditions |
| 7 | # are met: |
7 | # are met: |
| 8 | # |
8 | # |
| 9 | # - Redistributions of source code must retain the above copyright |
9 | # - Redistributions of source code must retain the above copyright |
| 10 | # notice, this list of conditions and the following disclaimer. |
10 | # notice, this list of conditions and the following disclaimer. |
| 11 | # - Redistributions in binary form must reproduce the above copyright |
11 | # - Redistributions in binary form must reproduce the above copyright |
| 12 | # notice, this list of conditions and the following disclaimer in the |
12 | # notice, this list of conditions and the following disclaimer in the |
| 13 | # documentation and/or other materials provided with the distribution. |
13 | # documentation and/or other materials provided with the distribution. |
| 14 | # - The name of the author may not be used to endorse or promote products |
14 | # - The name of the author may not be used to endorse or promote products |
| 15 | # derived from this software without specific prior written permission. |
15 | # derived from this software without specific prior written permission. |
| 16 | # |
16 | # |
| 17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | # (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. |
26 | # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | # |
27 | # |
| 28 | 28 | ||
| 29 | #include <arch/asm/regname.h> |
29 | #include <arch/asm/regname.h> |
| 30 | #include <arch/asm/spr.h> |
30 | #include <arch/asm/spr.h> |
| 31 | #include <arch/boot/boot.h> |
31 | #include <arch/boot/boot.h> |
| 32 | #include <arch/boot/memmap.h> |
32 | #include <arch/boot/memmap.h> |
| 33 | 33 | ||
| 34 | .section K_TEXT_START, "ax" |
34 | .section K_TEXT_START, "ax" |
| 35 | 35 | ||
| 36 | .global kernel_image_start |
36 | .global kernel_image_start |
| 37 | kernel_image_start: |
37 | kernel_image_start: |
| - | 38 | ||
| - | 39 | # load temporary stack |
|
| - | 40 | ||
| - | 41 | lis sp, end_stack@ha |
|
| - | 42 | addi sp, sp, end_stack@l |
|
| 38 | 43 | ||
| 39 | # r10 contains physical address to memmap_t |
44 | # r10 contains physical address to memmap_t |
| 40 | # from boot loader |
45 | # from boot loader |
| 41 | 46 | ||
| 42 | lis r4, 0x80000000@ha |
47 | lis r4, 0x80000000@ha |
| 43 | addi r4, r4, 0x80000000@l |
48 | addi r4, r4, 0x80000000@l |
| 44 | 49 | ||
| 45 | add r10, r10, r4 |
50 | add r10, r10, r4 |
| 46 | 51 | ||
| 47 | lis r4, memmap@ha |
52 | lis r4, memmap@ha |
| 48 | addi r4, r4, memmap@l # r4 = memmap |
53 | addi r4, r4, memmap@l # r4 = memmap |
| 49 | 54 | ||
| 50 | lwz r5, 0(r10) # memmap->total |
55 | lwz r5, 0(r10) # memmap->total |
| 51 | stw r5, 0(r4) |
56 | stw r5, 0(r4) |
| 52 | 57 | ||
| 53 | lwzu r5, 4(r10) # memmap->count |
58 | lwzu r5, 4(r10) # memmap->count |
| 54 | stwu r5, 4(r4) |
59 | stwu r5, 4(r4) |
| 55 | 60 | ||
| 56 | cmpwi r5, 0 |
61 | cmpwi r5, 0 |
| 57 | beq memmap_end |
62 | beq memmap_end |
| 58 | 63 | ||
| 59 | mtctr r5 |
64 | mtctr r5 |
| 60 | memmap_loop: |
65 | memmap_loop: |
| 61 | 66 | ||
| 62 | lwzu r5, 4(r10) # memmap->zones[i].start |
67 | lwzu r5, 4(r10) # memmap->zones[i].start |
| 63 | stwu r5, 4(r4) |
68 | stwu r5, 4(r4) |
| 64 | 69 | ||
| 65 | lwzu r5, 4(r10) # memmap->zones[i].size |
70 | lwzu r5, 4(r10) # memmap->zones[i].size |
| 66 | stwu r5, 4(r4) |
71 | stwu r5, 4(r4) |
| 67 | 72 | ||
| 68 | bdnz memmap_loop |
73 | bdnz memmap_loop |
| 69 | memmap_end: |
74 | memmap_end: |
| 70 | 75 | ||
| 71 | b main_bsp |
76 | b main_bsp |
| - | 77 | ||
| - | 78 | .section K_DATA_START, "aw", @progbits |
|
| - | 79 | ||
| - | 80 | .space TEMP_STACK_SIZE |
|
| - | 81 | end_stack: |
|
| 72 | 82 | ||