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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/boot/boot.h> |
30 | #include <arch/boot/boot.h> |
31 | #include <arch/boot/memmap.h> |
31 | #include <arch/boot/memmap.h> |
32 | 32 | ||
33 | .section K_TEXT_START, "ax" |
33 | .section K_TEXT_START, "ax" |
34 | 34 | ||
35 | .global kernel_image_start |
35 | .global kernel_image_start |
36 | kernel_image_start: |
36 | kernel_image_start: |
37 | 37 | ||
38 | # load temporary stack |
38 | # load temporary stack |
39 | 39 | ||
40 | lis sp, end_stack@ha |
40 | lis sp, end_stack@ha |
41 | addi sp, sp, end_stack@l |
41 | addi sp, sp, end_stack@l |
42 | 42 | ||
43 | # r10 contains physical address to memmap_t |
43 | # r10 contains physical address to memmap_t |
44 | # from boot loader |
44 | # from boot loader |
45 | 45 | ||
46 | lis r4, 0x80000000@ha |
46 | lis r31, 0x80000000@ha |
47 | addi r4, r4, 0x80000000@l |
47 | addi r31, r31, 0x80000000@l |
48 | 48 | ||
49 | add r10, r10, r4 |
49 | add r3, r3, r31 |
50 | 50 | ||
51 | lis r4, memmap@ha |
51 | lis r31, memmap@ha |
52 | addi r4, r4, memmap@l # r4 = memmap |
52 | addi r31, r31, memmap@l # r31 = memmap |
53 | 53 | ||
54 | lwz r5, 0(r10) # memmap->total |
54 | lwz r30, 0(r3) # memmap->total |
55 | stw r5, 0(r4) |
55 | stw r30, 0(r31) |
56 | 56 | ||
57 | lwzu r5, 4(r10) # memmap->count |
57 | lwzu r30, 4(r3) # memmap->count |
58 | stwu r5, 4(r4) |
58 | stwu r30, 4(r31) |
59 | 59 | ||
60 | cmpwi r5, 0 |
60 | cmpwi r30, 0 |
61 | beq memmap_end |
61 | beq memmap_end |
62 | 62 | ||
63 | mtctr r5 |
63 | mtctr r30 |
64 | memmap_loop: |
64 | memmap_loop: |
65 | 65 | ||
66 | lwzu r5, 4(r10) # memmap->zones[i].start |
66 | lwzu r30, 4(r3) # memmap->zones[i].start |
67 | stwu r5, 4(r4) |
67 | stwu r30, 4(r31) |
68 | 68 | ||
69 | lwzu r5, 4(r10) # memmap->zones[i].size |
69 | lwzu r30, 4(r3) # memmap->zones[i].size |
70 | stwu r5, 4(r4) |
70 | stwu r30, 4(r31) |
71 | 71 | ||
72 | bdnz memmap_loop |
72 | bdnz memmap_loop |
73 | memmap_end: |
73 | memmap_end: |
74 | 74 | ||
75 | b main_bsp |
75 | b main_bsp |
76 | 76 | ||
77 | .section K_DATA_START, "aw", @progbits |
77 | .section K_DATA_START, "aw", @progbits |
78 | 78 | ||
79 | .space TEMP_STACK_SIZE |
79 | .space TEMP_STACK_SIZE |
80 | end_stack: |
80 | end_stack: |
81 | 81 |