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