| 1 | /*
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| 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 |
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| 29 | #include <mm/frame.h>
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| 30 | #include <arch/mm/frame.h>
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| 31 | #include <mm/vm.h>
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| 32 | #include <config.h>
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| 33 | #include <arch/boot/boot.h>
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| 34 | #include <arch/boot/memmap.h>
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| 35 | #include <panic.h>
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| 36 | #include <debug.h>
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| 37 | #include <align.h>
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| 38 |
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| 39 | size_t hardcoded_unmapped_ktext_size = 0;
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| 40 | size_t hardcoded_unmapped_kdata_size = 0;
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| 41 |
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| 42 | __address last_frame = 0;
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| 43 |
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| 44 | void frame_arch_init(void)
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| 45 | {
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| 46 | zone_t *z;
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| 47 | __u8 i;
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| 48 |
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| 49 | if (config.cpu_active == 1) {
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| 50 |
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| 51 | /* Reserve frame 0 (BIOS data) */
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| 52 | frame_region_not_free(0, FRAME_SIZE);
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| 53 |
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| 54 | /* Reserve real mode bootstrap memory */
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| 55 | frame_region_not_free(BOOTSTRAP_OFFSET, hardcoded_unmapped_ktext_size + hardcoded_unmapped_kdata_size);
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| 56 |
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| 57 | for (i = 0; i < e820counter; i++) {
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| 58 | if (e820table[i].type == MEMMAP_MEMORY_AVAILABLE) {
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| 59 | zone_create_in_region(e820table[i].base_address, e820table[i].size & ~(FRAME_SIZE-1));
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| 60 | if (last_frame < ALIGN_UP(e820table[i].base_address + e820table[i].size, FRAME_SIZE))
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| 61 | last_frame = ALIGN_UP(e820table[i].base_address + e820table[i].size, FRAME_SIZE);
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| 62 | }
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| 63 | }
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| 64 | }
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| 65 | }
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