| 1 | /*
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| 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 |
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| 29 | #include <arch/boot/boot.h>
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| 30 | #include <arch/mm/frame.h>
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| 31 | #include <arch/mm/memory_init.h>
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| 32 | #include <mm/frame.h>
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| 33 | #include <align.h>
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| 34 | #include <macros.h>
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| 35 |
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| 36 | __address last_frame = 0;
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| 37 |
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| 38 | void frame_arch_init(void)
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| 39 | {
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| 40 | pfn_t minconf = 2;
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| 41 | count_t i;
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| 42 | pfn_t start, conf;
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| 43 | size_t size;
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| 44 |
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| 45 | for (i = 0; i < bootinfo.memmap.count; i++) {
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| 46 | start = ADDR2PFN(ALIGN_UP(bootinfo.memmap.zones[i].start, FRAME_SIZE));
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| 47 | size = SIZE2FRAMES(ALIGN_DOWN(bootinfo.memmap.zones[i].size, FRAME_SIZE));
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| 48 |
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| 49 | if ((minconf < start) || (minconf >= start + size))
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| 50 | conf = start;
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| 51 | else
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| 52 | conf = minconf;
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| 53 |
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| 54 | zone_create(start, size, conf, 0);
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| 55 | if (last_frame < ALIGN_UP(bootinfo.memmap.zones[i].start + bootinfo.memmap.zones[i].size, FRAME_SIZE))
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| 56 | last_frame = ALIGN_UP(bootinfo.memmap.zones[i].start + bootinfo.memmap.zones[i].size, FRAME_SIZE);
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| 57 | }
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| 58 |
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| 59 | /* First is exception vector, second is 'implementation specific', third and fourth is reserved */
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| 60 | frame_mark_unavailable(0, 4);
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| 61 |
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| 62 | /* Merge all zones to 1 big zone */
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| 63 | zone_merge_all();
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| 64 | }
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