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2128 | jermar | 1 | /* |
2 | * Copyright (c) 2003-2004 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 | |||
29 | /** @addtogroup arm32mm |
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30 | * @{ |
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31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
35 | #include <arch/mm/page.h> |
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36 | #include <genarch/mm/page_pt.h> |
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37 | #include <mm/page.h> |
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2182 | jancik | 38 | #include <align.h> |
39 | #include <config.h> |
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40 | #include "../aux_print/printf.h" |
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2128 | jermar | 41 | |
42 | void page_arch_init(void) |
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43 | { |
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2182 | jancik | 44 | aux_printf("page_arch_init\n"); |
45 | |||
46 | uintptr_t cur; |
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47 | int flags; |
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48 | |||
2128 | jermar | 49 | page_mapping_operations = &pt_mapping_operations; |
2182 | jancik | 50 | |
51 | flags = PAGE_CACHEABLE; |
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52 | const unsigned maxmem = ALIGN_DOWN(config.memory_size, FRAME_SIZE); |
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53 | |||
54 | for (cur = 0; cur < maxmem; cur += FRAME_SIZE) { |
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55 | page_mapping_insert(AS_KERNEL, PA2KA(cur), cur, flags); |
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56 | } |
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57 | //TODO set page fault routines |
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58 | // no problem no ... kernel doesn't do page faults |
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59 | |||
60 | |||
61 | asm volatile ( |
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62 | "ldr r0, =0x55555555 \n" |
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63 | "mrc p15, 0, r0, c3, c0, 0 \n" //set domain acces rights to client <==> take rights from page tables |
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64 | "mcr p15, 0, r0, c1, c0, 0 \n" // get current setting of system ... register 1 isn't only for memmory management |
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65 | "ldr r1, =0xFFFFFE8D \n" // mask to disable aligment checks, System, Rom bit disable |
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66 | "and r0, r0, r1 \n" |
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67 | "ldr r1, =0x00000001 \n" // mask to enable paging |
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68 | "orr r0, r0, r1 \n" |
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69 | "mrc p15, 0, r0, c1, c0, 0 \n" // store setting |
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70 | : |
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71 | : |
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72 | : "r0", "r1" |
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73 | ); |
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2128 | jermar | 74 | } |
75 | |||
76 | /** Map device into kernel space. */ |
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77 | uintptr_t hw_map(uintptr_t physaddr, size_t size) |
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78 | { |
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79 | /* TODO */ |
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80 | return NULL; |
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81 | } |
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82 | |||
83 | /** @} |
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84 | */ |
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2182 | jancik | 85 |