Subversion Repositories HelenOS-historic

Rev

Rev 1146 | Rev 1755 | 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
1146 decky 34
#define BUF_SIZE        1024
964 decky 35
 
36
typedef unsigned int ofw_arg_t;
37
typedef unsigned int ihandle;
38
typedef unsigned int phandle;
39
 
40
/** OpenFirmware command structure
41
 *
42
 */
43
typedef struct {
44
    const char *service;          /**< Command name */
45
    unsigned int nargs;           /**< Number of in arguments */
46
    unsigned int nret;            /**< Number of out arguments */
47
    ofw_arg_t args[MAX_OFW_ARGS]; /**< List of arguments */
48
} ofw_args_t;
49
 
50
typedef void (*ofw_entry)(ofw_args_t *);
51
 
52
 
885 decky 53
ofw_entry ofw;
54
 
55
phandle ofw_chosen;
1146 decky 56
ihandle ofw_stdout;
57
phandle ofw_root;
58
ihandle ofw_mmu;
59
phandle ofw_memory;
1130 decky 60
phandle ofw_aliases;
885 decky 61
 
62
 
1146 decky 63
static int ofw_call(const char *service, const int nargs, const int nret, ofw_arg_t *rets, ...)
885 decky 64
{
65
    va_list list;
66
    ofw_args_t args;
67
    int i;
68
 
69
    args.service = service;
70
    args.nargs = nargs;
71
    args.nret = nret;
72
 
1146 decky 73
    va_start(list, rets);
885 decky 74
    for (i = 0; i < nargs; i++)
75
        args.args[i] = va_arg(list, ofw_arg_t);
76
    va_end(list);
77
 
78
    for (i = 0; i < nret; i++)
79
        args.args[i + nargs] = 0;
80
 
81
    ofw(&args);
82
 
1146 decky 83
    for (i = 1; i < nret; i++)
84
        rets[i - 1] = args.args[i + nargs];
85
 
956 decky 86
    return args.args[nargs];
885 decky 87
}
88
 
89
 
964 decky 90
static phandle ofw_find_device(const char *name)
953 decky 91
{
1146 decky 92
    return ofw_call("finddevice", 1, 1, NULL, name);
964 decky 93
}
94
 
95
 
96
static int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen)
97
{
1146 decky 98
    return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
964 decky 99
}
100
 
1146 decky 101
 
102
static unsigned int ofw_get_address_cells(const phandle device)
103
{
104
    unsigned int ret;
105
 
106
    if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
107
        if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
108
            ret = 1;
109
 
110
    return ret;
111
}
112
 
113
 
114
static unsigned int ofw_get_size_cells(const phandle device)
115
{
116
    unsigned int ret;
117
 
118
    if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
119
        if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)
120
            ret = 1;
121
 
122
    return ret;
123
}
124
 
125
 
964 decky 126
static ihandle ofw_open(const char *name)
127
{
1146 decky 128
    return ofw_call("open", 1, 1, NULL, name);
953 decky 129
}
130
 
131
 
964 decky 132
void init(void)
885 decky 133
{
964 decky 134
    ofw_chosen = ofw_find_device("/chosen");
135
    if (ofw_chosen == -1)
136
        halt();
885 decky 137
 
1146 decky 138
    if (ofw_get_property(ofw_chosen, "stdout",  &ofw_stdout, sizeof(ofw_stdout)) <= 0)
964 decky 139
        ofw_stdout = 0;
140
 
1146 decky 141
    ofw_root = ofw_find_device("/");
142
    if (ofw_root == -1) {
143
        puts("\r\nError: Unable to find / device, halted.\r\n");
1130 decky 144
        halt();
145
    }
146
 
1146 decky 147
    if (ofw_get_property(ofw_chosen, "mmu",  &ofw_mmu, sizeof(ofw_mmu)) <= 0) {
148
        puts("\r\nError: Unable to get mmu property, halted.\r\n");
964 decky 149
        halt();
150
    }
1146 decky 151
 
152
    ofw_memory = ofw_find_device("/memory");
153
    if (ofw_memory == -1) {
154
        puts("\r\nError: Unable to find /memory device, halted.\r\n");
155
        halt();
156
    }
157
 
158
    ofw_aliases = ofw_find_device("/aliases");
159
    if (ofw_aliases == -1) {
160
        puts("\r\nError: Unable to find /aliases device, halted.\r\n");
161
        halt();
162
    }
885 decky 163
}
164
 
165
 
964 decky 166
void ofw_write(const char *str, const int len)
885 decky 167
{
964 decky 168
    if (ofw_stdout == 0)
169
        return;
170
 
1146 decky 171
    ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
885 decky 172
}
173
 
174
 
956 decky 175
void *ofw_translate(const void *virt)
885 decky 176
{
1146 decky 177
    ofw_arg_t result[3];
178
 
179
    if (ofw_call("call-method", 4, 4, result, "translate", ofw_mmu, virt, 1) != 0) {
180
        puts("Error: MMU method translate() failed, halting.\n");
181
        halt();
182
    }
183
    return (void *) result[2];
885 decky 184
}
953 decky 185
 
186
 
1075 decky 187
int ofw_map(const void *phys, const void *virt, const int size, const int mode)
188
{
1146 decky 189
    return ofw_call("call-method", 6, 1, NULL, "map", ofw_mmu, mode, size, virt, phys);
1075 decky 190
}
191
 
192
 
964 decky 193
int ofw_memmap(memmap_t *map)
194
{
1146 decky 195
    unsigned int buf[BUF_SIZE];
196
    int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(unsigned int) * BUF_SIZE);
197
    if (ret <= 0)
964 decky 198
        return false;
1146 decky 199
 
200
    unsigned int ac = ofw_get_address_cells(ofw_memory);
201
    unsigned int sc = ofw_get_size_cells(ofw_memory);
964 decky 202
 
1146 decky 203
    int pos;
964 decky 204
    map->total = 0;
205
    map->count = 0;
1146 decky 206
    for (pos = 0; (pos < ret / sizeof(unsigned int)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
207
        void * start = (void *) buf[pos + ac - 1];
208
        unsigned int size = buf[pos + ac + sc - 1];
209
 
210
        if (size > 0) {
211
            map->zones[map->count].start = start;
212
            map->zones[map->count].size = size;
213
            map->count++;
214
            map->total += size;
215
        }
964 decky 216
    }
217
}
1130 decky 218
 
219
 
220
int ofw_screen(screen_t *screen)
221
{
1146 decky 222
    char device_name[BUF_SIZE];
1130 decky 223
 
1146 decky 224
    if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(char) * BUF_SIZE) <= 0)
1130 decky 225
        return false;
226
 
227
    phandle device = ofw_find_device(device_name);
228
    if (device == -1)
229
        return false;
230
 
231
    if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0)
232
        return false;
233
 
234
    if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
235
        return false;
236
 
237
    if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
238
        return false;
239
 
240
    if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
241
        return false;
242
 
243
    if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
244
        return false;
245
 
246
    return true;
247
}
1620 decky 248
 
249
 
250
int ofw_keyboard(keyboard_t *keyboard)
251
{
252
    char device_name[BUF_SIZE];
253
 
254
    if (ofw_get_property(ofw_aliases, "macio", device_name, sizeof(char) * BUF_SIZE) <= 0)
255
        return false;
256
 
257
    phandle device = ofw_find_device(device_name);
258
    if (device == -1)
259
        return false;
260
 
261
    // FIXME
262
    keyboard->addr = (void *) 0x80816000;
263
    keyboard->size = 7680;
264
 
265
    return true;
266
}