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| Rev | Author | Line No. | Line |
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| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 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 | #include <mm/page.h> |
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| 30 | #include <arch/mm/page.h> |
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| 116 | jermar | 31 | #include <arch/types.h> |
| 32 | #include <typedefs.h> |
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| 1 | jermar | 33 | |
| 34 | void page_init(void) |
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| 35 | { |
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| 23 | jermar | 36 | page_arch_init(); |
| 1 | jermar | 37 | map_page_to_frame(0x0, 0x0, PAGE_NOT_PRESENT, 0); |
| 38 | } |
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| 116 | jermar | 39 | |
| 40 | /** Map memory structure |
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| 41 | * |
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| 42 | * Identity-map memory structure |
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| 43 | * considering possible crossings |
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| 44 | * of page boundaries. |
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| 45 | * |
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| 46 | * @param s Address of the structure. |
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| 47 | * @param size Size of the structure. |
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| 48 | */ |
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| 49 | void map_structure(__address s, size_t size) |
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| 50 | { |
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| 51 | int i, cnt, length; |
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| 52 | |||
| 53 | /* TODO: implement portable way of computing page address from address */ |
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| 54 | length = size + (s - (s & 0xfffff000)); |
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| 55 | cnt = length/PAGE_SIZE + (length%PAGE_SIZE>0); |
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| 56 | |||
| 57 | for (i = 0; i < cnt; i++) |
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| 58 | map_page_to_frame(s + i*PAGE_SIZE, s + i*PAGE_SIZE, PAGE_NOT_CACHEABLE, 0); |
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| 59 | |||
| 60 | } |