Subversion Repositories HelenOS-historic

Rev

Rev 1730 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
162 decky 1
/*
2
 * Copyright (C) 2005 Martin Decky
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1726 decky 29
/** @addtogroup ppc32mm
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
1132 decky 35
#include <arch/boot/boot.h>
162 decky 36
#include <arch/mm/frame.h>
843 palkovsky 37
#include <arch/mm/memory_init.h>
162 decky 38
#include <mm/frame.h>
972 decky 39
#include <align.h>
40
#include <macros.h>
162 decky 41
 
1780 jermar 42
uintptr_t last_frame = 0;
972 decky 43
 
162 decky 44
void frame_arch_init(void)
45
{
972 decky 46
    pfn_t minconf = 2;
47
    count_t i;
48
    pfn_t start, conf;
49
    size_t size;
50
 
1132 decky 51
    for (i = 0; i < bootinfo.memmap.count; i++) {
52
        start = ADDR2PFN(ALIGN_UP(bootinfo.memmap.zones[i].start, FRAME_SIZE));
53
        size = SIZE2FRAMES(ALIGN_DOWN(bootinfo.memmap.zones[i].size, FRAME_SIZE));
972 decky 54
 
55
        if ((minconf < start) || (minconf >= start + size))
56
            conf = start;
57
        else
58
            conf = minconf;
59
 
60
        zone_create(start, size, conf, 0);
1132 decky 61
        if (last_frame < ALIGN_UP(bootinfo.memmap.zones[i].start + bootinfo.memmap.zones[i].size, FRAME_SIZE))
62
            last_frame = ALIGN_UP(bootinfo.memmap.zones[i].start + bootinfo.memmap.zones[i].size, FRAME_SIZE);
972 decky 63
    }
64
 
1716 decky 65
    /* First is exception vector, second is 'implementation specific',
66
       third and fourth is reserved, other contain real mode code */
67
    frame_mark_unavailable(0, 8);
972 decky 68
 
1730 decky 69
    /* Mark the Page Hash Table frames as unavailable */
1780 jermar 70
    uint32_t sdr1;
1730 decky 71
    asm volatile (
72
        "mfsdr1 %0\n"
73
        : "=r" (sdr1)
74
    );
75
    frame_mark_unavailable(ADDR2PFN(sdr1 & 0xffff000), 16); // FIXME
162 decky 76
}
1702 cejka 77
 
1726 decky 78
/** @}
1702 cejka 79
 */