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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 |
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 | 38 | ||
39 | # r10 contains physical address to memmap_t |
39 | # r10 contains physical address to memmap_t |
40 | # from boot loader |
40 | # from boot loader |
41 | 41 | ||
42 | lis r4, 0x80000000@ha |
42 | lis r4, 0x80000000@ha |
43 | addi r4, r4, 0x80000000@l |
43 | addi r4, r4, 0x80000000@l |
44 | 44 | ||
45 | add r10, r10, r4 |
45 | add r10, r10, r4 |
46 | 46 | ||
47 | lis r4, memmap@ha |
47 | lis r4, memmap@ha |
48 | addi r4, r4, memmap@l # r4 = memmap |
48 | addi r4, r4, memmap@l # r4 = memmap |
49 | 49 | ||
50 | lwz r5, 0(r10) # memmap->total |
50 | lwz r5, 0(r10) # memmap->total |
51 | stw r5, 0(r4) |
51 | stw r5, 0(r4) |
52 | 52 | ||
53 | lwzu r5, 4(r10) # memmap->count |
53 | lwzu r5, 4(r10) # memmap->count |
54 | stwu r5, 4(r4) |
54 | stwu r5, 4(r4) |
55 | 55 | ||
56 | cmpwi r5, 0 |
56 | cmpwi r5, 0 |
57 | beq memmap_end |
57 | beq memmap_end |
58 | 58 | ||
59 | mtctr r5 |
59 | mtctr r5 |
60 | memmap_loop: |
60 | memmap_loop: |
61 | 61 | ||
62 | lwzu r5, 4(r10) # memmap->zones[i].start |
62 | lwzu r5, 4(r10) # memmap->zones[i].start |
63 | stwu r5, 4(r4) |
63 | stwu r5, 4(r4) |
64 | 64 | ||
65 | lwzu r5, 4(r10) # memmap->zones[i].size |
65 | lwzu r5, 4(r10) # memmap->zones[i].size |
66 | stwu r5, 4(r4) |
66 | stwu r5, 4(r4) |
67 | 67 | ||
68 | bdnz memmap_loop |
68 | bdnz memmap_loop |
69 | memmap_end: |
69 | memmap_end: |
70 | 70 | ||
71 | b main_bsp |
71 | b main_bsp |
72 | 72 |