Subversion Repositories HelenOS-historic

Rev

Rev 1702 | Go to most recent revision | Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
867 jermar 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
 
29
#include <genarch/ofw/memory_init.h>
30
#include <genarch/ofw/ofw.h>
31
#include <panic.h>
32
#include <mm/frame.h>
33
#include <align.h>
34
#include <arch/types.h>
35
#include <typedefs.h>
36
 
37
#define MEMMAP_MAX_RECORDS 32
38
 
39
typedef struct {
40
    __address start;
41
    size_t size;
42
} memmap_t;
43
 
44
static memmap_t memmap[MEMMAP_MAX_RECORDS];
45
size_t total_mem = 0;
46
 
47
void ofw_init_memmap(void)
48
{
49
    int i;
50
    int ret;
51
 
52
    phandle handle = ofw_find_device("/memory");
53
    if (handle == -1)
54
        panic("No RAM\n");
55
 
56
    ret = ofw_get_property(handle, "reg", &memmap, sizeof(memmap));
57
    if (ret == -1)
58
        panic("Device /memory has no reg property\n");
59
 
60
 
61
    for (i = 0; i < MEMMAP_MAX_RECORDS; i++) {
62
        if (memmap[i].size == 0)
63
            break;
64
        total_mem += memmap[i].size;
65
    }
66
}
67
 
68
size_t ofw_get_memory_size(void)
69
{
70
    return total_mem;
71
}
72
 
73
void ofw_init_zones(void)
74
{
75
    int i;
76
    pfn_t confdata;
77
 
78
    for (i = 0; i < MEMMAP_MAX_RECORDS; i++) {
79
        if (memmap[i].size == 0)
80
            break;
81
        confdata = ADDR2PFN(memmap[i].start);
82
        if (confdata == 0)
83
            confdata = 2;
84
        zone_create(ADDR2PFN(memmap[i].start),
85
                SIZE2FRAMES(ALIGN_DOWN(memmap[i].size,PAGE_SIZE)),
86
                confdata, 0);
87
    }
88
}