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867 | jermar | 1 | /* |
2 | * Copyright (C) 2005 Martin Decky |
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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 | |||
29 | #include <genarch/ofw/memory_init.h> |
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30 | #include <genarch/ofw/ofw.h> |
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31 | #include <panic.h> |
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32 | #include <mm/frame.h> |
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33 | #include <align.h> |
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34 | #include <arch/types.h> |
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35 | #include <typedefs.h> |
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36 | |||
37 | #define MEMMAP_MAX_RECORDS 32 |
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38 | |||
39 | typedef struct { |
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40 | __address start; |
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41 | size_t size; |
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42 | } memmap_t; |
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43 | |||
44 | static memmap_t memmap[MEMMAP_MAX_RECORDS]; |
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45 | size_t total_mem = 0; |
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46 | |||
47 | void ofw_init_memmap(void) |
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48 | { |
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49 | int i; |
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50 | int ret; |
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51 | |||
52 | phandle handle = ofw_find_device("/memory"); |
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53 | if (handle == -1) |
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54 | panic("No RAM\n"); |
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55 | |||
56 | ret = ofw_get_property(handle, "reg", &memmap, sizeof(memmap)); |
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57 | if (ret == -1) |
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58 | panic("Device /memory has no reg property\n"); |
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59 | |||
60 | |||
61 | for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
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62 | if (memmap[i].size == 0) |
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63 | break; |
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64 | total_mem += memmap[i].size; |
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65 | } |
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66 | } |
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67 | |||
68 | size_t ofw_get_memory_size(void) |
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69 | { |
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70 | return total_mem; |
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71 | } |
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72 | |||
73 | void ofw_init_zones(void) |
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74 | { |
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75 | int i; |
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76 | pfn_t confdata; |
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77 | |||
78 | for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
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79 | if (memmap[i].size == 0) |
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80 | break; |
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81 | confdata = ADDR2PFN(memmap[i].start); |
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82 | if (confdata == 0) |
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83 | confdata = 2; |
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84 | zone_create(ADDR2PFN(memmap[i].start), |
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85 | SIZE2FRAMES(ALIGN_DOWN(memmap[i].size,PAGE_SIZE)), |
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86 | confdata, 0); |
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87 | } |
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88 | } |