Subversion Repositories HelenOS-historic

Rev

Rev 1058 | Rev 1130 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
885 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
 
29
#include "ofw.h"
1058 decky 30
#include "asm.h"
953 decky 31
#include "printf.h"
885 decky 32
 
964 decky 33
#define MAX_OFW_ARGS    10
34
 
35
typedef unsigned int ofw_arg_t;
36
typedef unsigned int ihandle;
37
typedef unsigned int phandle;
38
 
39
/** OpenFirmware command structure
40
 *
41
 */
42
typedef struct {
43
    const char *service;          /**< Command name */
44
    unsigned int nargs;           /**< Number of in arguments */
45
    unsigned int nret;            /**< Number of out arguments */
46
    ofw_arg_t args[MAX_OFW_ARGS]; /**< List of arguments */
47
} ofw_args_t;
48
 
49
typedef void (*ofw_entry)(ofw_args_t *);
50
 
51
 
885 decky 52
ofw_entry ofw;
53
 
54
phandle ofw_chosen;
953 decky 55
ihandle ofw_mmu;
885 decky 56
ihandle ofw_stdout;
57
 
58
 
964 decky 59
static int ofw_call(const char *service, const int nargs, const int nret, ...)
885 decky 60
{
61
    va_list list;
62
    ofw_args_t args;
63
    int i;
64
 
65
    args.service = service;
66
    args.nargs = nargs;
67
    args.nret = nret;
68
 
69
    va_start(list, nret);
70
    for (i = 0; i < nargs; i++)
71
        args.args[i] = va_arg(list, ofw_arg_t);
72
    va_end(list);
73
 
74
    for (i = 0; i < nret; i++)
75
        args.args[i + nargs] = 0;
76
 
77
    ofw(&args);
78
 
956 decky 79
    return args.args[nargs];
885 decky 80
}
81
 
82
 
964 decky 83
static phandle ofw_find_device(const char *name)
953 decky 84
{
964 decky 85
    return ofw_call("finddevice", 1, 1, name);
86
}
87
 
88
 
89
static int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen)
90
{
91
    return ofw_call("getprop", 4, 1, device, name, buf, buflen);
92
}
93
 
94
static ihandle ofw_open(const char *name)
95
{
953 decky 96
    return ofw_call("open", 1, 1, name);
97
}
98
 
99
 
964 decky 100
void init(void)
885 decky 101
{
964 decky 102
    ofw_chosen = ofw_find_device("/chosen");
103
    if (ofw_chosen == -1)
104
        halt();
885 decky 105
 
964 decky 106
    if (ofw_get_property(ofw_chosen, "stdout",  &ofw_stdout, sizeof(ofw_stdout)) <= 0) 
107
        ofw_stdout = 0;
108
 
109
    ofw_mmu = ofw_open("/mmu");
110
    if (ofw_mmu == -1) {
111
        puts("Unable to open /mmu node\n");
112
        halt();
113
    }
885 decky 114
}
115
 
116
 
964 decky 117
void ofw_write(const char *str, const int len)
885 decky 118
{
964 decky 119
    if (ofw_stdout == 0)
120
        return;
121
 
122
    ofw_call("write", 3, 1, ofw_stdout, str, len);
885 decky 123
}
124
 
125
 
956 decky 126
void *ofw_translate(const void *virt)
885 decky 127
{
956 decky 128
    return (void *) ofw_call("call-method", 7, 1, "translate", ofw_mmu, virt, 0, 0, 0, 0);
885 decky 129
}
953 decky 130
 
131
 
1075 decky 132
int ofw_map(const void *phys, const void *virt, const int size, const int mode)
133
{
134
    return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys);
135
}
136
 
137
 
964 decky 138
int ofw_memmap(memmap_t *map)
139
{
140
    int i;
141
    int ret;
142
 
143
    phandle handle = ofw_find_device("/memory");
144
    if (handle == -1)
145
        return false;
146
 
147
    ret = ofw_get_property(handle, "reg", &map->zones, sizeof(map->zones));
148
    if (ret == -1)
149
        return false;
150
 
151
    map->total = 0;
152
    map->count = 0;
153
    for (i = 0; i < MEMMAP_MAX_RECORDS; i++) {
154
        if (map->zones[i].size == 0)
155
            break;
156
        map->count++;
157
        map->total += map->zones[i].size;
158
    }
159
}