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/*
1
/*
2
 * Copyright (C) 2005 Martin Decky
2
 * Copyright (C) 2005 Martin Decky
3
 * All rights reserved.
3
 * All rights reserved.
4
 *
4
 *
5
 * Redistribution and use in source and binary forms, with or without
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
6
 * modification, are permitted provided that the following conditions
7
 * are met:
7
 * are met:
8
 *
8
 *
9
 * - Redistributions of source code must retain the above copyright
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
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
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.
15
 *   derived from this software without specific prior written permission.
16
 *
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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
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.
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
27
 */
28
 
28
 
29
#include "ofw.h"
29
#include "ofw.h"
30
#include <printf.h>
30
#include <printf.h>
31
#include <asm.h>
31
#include <asm.h>
32
 
32
 
33
#define MAX_OFW_ARGS        10
33
#define MAX_OFW_ARGS        10
34
#define BUF_SIZE        1024
-
 
35
 
-
 
36
typedef unsigned int ofw_arg_t;
-
 
37
typedef unsigned int ihandle;
-
 
38
typedef unsigned int phandle;
-
 
39
 
34
 
40
/** OpenFirmware command structure
35
/** OpenFirmware command structure
41
 *
36
 *
42
 */
37
 */
43
typedef struct {
38
typedef struct {
44
    const char *service;          /**< Command name */
39
    const char *service;          /**< Command name */
45
    unsigned int nargs;           /**< Number of in arguments */
40
    unsigned int nargs;           /**< Number of in arguments */
46
    unsigned int nret;            /**< Number of out arguments */
41
    unsigned int nret;            /**< Number of out arguments */
47
    ofw_arg_t args[MAX_OFW_ARGS]; /**< List of arguments */
42
    ofw_arg_t args[MAX_OFW_ARGS]; /**< List of arguments */
48
} ofw_args_t;
43
} ofw_args_t;
49
 
44
 
50
typedef void (*ofw_entry)(ofw_args_t *);
45
typedef void (*ofw_entry)(ofw_args_t *);
51
 
46
 
52
 
-
 
53
typedef struct {
-
 
54
    unsigned int info;
-
 
55
    unsigned int addr_hi;
-
 
56
    unsigned int addr_lo;
-
 
57
} pci_addr_t;
-
 
58
 
-
 
59
typedef struct {
-
 
60
    pci_addr_t addr;
-
 
61
    unsigned int size_hi;
-
 
62
    unsigned int size_lo;
-
 
63
} pci_reg_t;
-
 
64
 
-
 
65
 
-
 
66
ofw_entry ofw;
47
ofw_entry ofw;
67
 
48
 
68
phandle ofw_chosen;
49
phandle ofw_chosen;
69
ihandle ofw_stdout;
50
ihandle ofw_stdout;
70
phandle ofw_root;
51
phandle ofw_root;
71
ihandle ofw_mmu;
52
ihandle ofw_mmu;
72
phandle ofw_memory;
53
phandle ofw_memory;
73
phandle ofw_aliases;
54
phandle ofw_aliases;
74
 
55
 
75
static int ofw_call(const char *service, const int nargs, const int nret, ofw_arg_t *rets, ...)
56
static int ofw_call(const char *service, const int nargs, const int nret, ofw_arg_t *rets, ...)
76
{
57
{
77
    va_list list;
58
    va_list list;
78
    ofw_args_t args;
59
    ofw_args_t args;
79
    int i;
60
    int i;
80
   
61
   
81
    args.service = service;
62
    args.service = service;
82
    args.nargs = nargs;
63
    args.nargs = nargs;
83
    args.nret = nret;
64
    args.nret = nret;
84
   
65
   
85
    va_start(list, rets);
66
    va_start(list, rets);
86
    for (i = 0; i < nargs; i++)
67
    for (i = 0; i < nargs; i++)
87
        args.args[i] = va_arg(list, ofw_arg_t);
68
        args.args[i] = va_arg(list, ofw_arg_t);
88
    va_end(list);
69
    va_end(list);
89
   
70
   
90
    for (i = 0; i < nret; i++)
71
    for (i = 0; i < nret; i++)
91
        args.args[i + nargs] = 0;
72
        args.args[i + nargs] = 0;
92
   
73
   
93
    ofw(&args);
74
    ofw(&args);
94
   
75
   
95
    for (i = 1; i < nret; i++)
76
    for (i = 1; i < nret; i++)
96
        rets[i - 1] = args.args[i + nargs];
77
        rets[i - 1] = args.args[i + nargs];
97
   
78
   
98
    return args.args[nargs];
79
    return args.args[nargs];
99
}
80
}
100
 
81
 
101
 
82
 
102
static phandle ofw_find_device(const char *name)
83
phandle ofw_find_device(const char *name)
103
{
84
{
104
    return ofw_call("finddevice", 1, 1, NULL, name);
85
    return ofw_call("finddevice", 1, 1, NULL, name);
105
}
86
}
106
 
87
 
107
 
88
 
108
static int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen)
89
int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen)
109
{
90
{
110
    return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
91
    return ofw_call("getprop", 4, 1, NULL, device, name, buf, buflen);
111
}
92
}
112
 
93
 
113
 
94
 
114
static unsigned int ofw_get_address_cells(const phandle device)
95
static unsigned int ofw_get_address_cells(const phandle device)
115
{
96
{
116
    unsigned int ret;
97
    unsigned int ret;
117
   
98
   
118
    if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
99
    if (ofw_get_property(device, "#address-cells", &ret, sizeof(ret)) <= 0)
119
        if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
100
        if (ofw_get_property(ofw_root, "#address-cells", &ret, sizeof(ret)) <= 0)
120
            ret = 1;
101
            ret = 1;
121
   
102
   
122
    return ret;
103
    return ret;
123
}
104
}
124
 
105
 
125
 
106
 
126
static unsigned int ofw_get_size_cells(const phandle device)
107
static unsigned int ofw_get_size_cells(const phandle device)
127
{
108
{
128
    unsigned int ret;
109
    unsigned int ret;
129
   
110
   
130
    if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
111
    if (ofw_get_property(device, "#size-cells", &ret, sizeof(ret)) <= 0)
131
        if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)
112
        if (ofw_get_property(ofw_root, "#size-cells", &ret, sizeof(ret)) <= 0)
132
            ret = 1;
113
            ret = 1;
133
   
114
   
134
    return ret;
115
    return ret;
135
}
116
}
136
 
117
 
137
 
118
 
138
static ihandle ofw_open(const char *name)
119
static ihandle ofw_open(const char *name)
139
{
120
{
140
    return ofw_call("open", 1, 1, NULL, name);
121
    return ofw_call("open", 1, 1, NULL, name);
141
}
122
}
142
 
123
 
143
 
124
 
144
void init(void)
125
void init(void)
145
{
126
{
146
    ofw_chosen = ofw_find_device("/chosen");
127
    ofw_chosen = ofw_find_device("/chosen");
147
    if (ofw_chosen == -1)
128
    if (ofw_chosen == -1)
148
        halt();
129
        halt();
149
   
130
   
150
    if (ofw_get_property(ofw_chosen, "stdout",  &ofw_stdout, sizeof(ofw_stdout)) <= 0)
131
    if (ofw_get_property(ofw_chosen, "stdout",  &ofw_stdout, sizeof(ofw_stdout)) <= 0)
151
        ofw_stdout = 0;
132
        ofw_stdout = 0;
152
   
133
   
153
    ofw_root = ofw_find_device("/");
134
    ofw_root = ofw_find_device("/");
154
    if (ofw_root == -1) {
135
    if (ofw_root == -1) {
155
        puts("\r\nError: Unable to find / device, halted.\r\n");
136
        puts("\r\nError: Unable to find / device, halted.\r\n");
156
        halt();
137
        halt();
157
    }
138
    }
158
   
139
   
159
    if (ofw_get_property(ofw_chosen, "mmu",  &ofw_mmu, sizeof(ofw_mmu)) <= 0) {
140
    if (ofw_get_property(ofw_chosen, "mmu",  &ofw_mmu, sizeof(ofw_mmu)) <= 0) {
160
        puts("\r\nError: Unable to get mmu property, halted.\r\n");
141
        puts("\r\nError: Unable to get mmu property, halted.\r\n");
161
        halt();
142
        halt();
162
    }
143
    }
163
   
144
   
164
    ofw_memory = ofw_find_device("/memory");
145
    ofw_memory = ofw_find_device("/memory");
165
    if (ofw_memory == -1) {
146
    if (ofw_memory == -1) {
166
        puts("\r\nError: Unable to find /memory device, halted.\r\n");
147
        puts("\r\nError: Unable to find /memory device, halted.\r\n");
167
        halt();
148
        halt();
168
    }
149
    }
169
   
150
   
170
    ofw_aliases = ofw_find_device("/aliases");
151
    ofw_aliases = ofw_find_device("/aliases");
171
    if (ofw_aliases == -1) {
152
    if (ofw_aliases == -1) {
172
        puts("\r\nError: Unable to find /aliases device, halted.\r\n");
153
        puts("\r\nError: Unable to find /aliases device, halted.\r\n");
173
        halt();
154
        halt();
174
    }
155
    }
175
}
156
}
176
 
157
 
177
 
158
 
178
void ofw_write(const char *str, const int len)
159
void ofw_write(const char *str, const int len)
179
{
160
{
180
    if (ofw_stdout == 0)
161
    if (ofw_stdout == 0)
181
        return;
162
        return;
182
   
163
   
183
    ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
164
    ofw_call("write", 3, 1, NULL, ofw_stdout, str, len);
184
}
165
}
185
 
166
 
186
 
167
 
187
void *ofw_translate(const void *virt)
168
void *ofw_translate(const void *virt)
188
{
169
{
189
    ofw_arg_t result[3];
170
    ofw_arg_t result[3];
190
   
171
   
191
    if (ofw_call("call-method", 4, 4, result, "translate", ofw_mmu, virt, 1) != 0) {
172
    if (ofw_call("call-method", 4, 4, result, "translate", ofw_mmu, virt, 1) != 0) {
192
        puts("Error: MMU method translate() failed, halting.\n");
173
        puts("Error: MMU method translate() failed, halting.\n");
193
        halt();
174
        halt();
194
    }
175
    }
195
    return (void *) result[2];
176
    return (void *) result[2];
196
}
177
}
197
 
178
 
198
 
179
 
199
int ofw_map(const void *phys, const void *virt, const int size, const int mode)
180
int ofw_map(const void *phys, const void *virt, const int size, const int mode)
200
{
181
{
201
    return ofw_call("call-method", 6, 1, NULL, "map", ofw_mmu, mode, size, virt, phys);
182
    return ofw_call("call-method", 6, 1, NULL, "map", ofw_mmu, mode, size, virt, phys);
202
}
183
}
203
 
184
 
204
 
185
 
205
int ofw_memmap(memmap_t *map)
186
int ofw_memmap(memmap_t *map)
206
{
187
{
207
    unsigned int buf[BUF_SIZE];
188
    unsigned long buf[BUF_SIZE];
208
    int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(unsigned int) * BUF_SIZE);
189
    int ret = ofw_get_property(ofw_memory, "reg", buf, sizeof(buf));
209
    if (ret <= 0)
190
    if (ret <= 0)
210
        return false;
191
        return false;
211
       
192
       
212
    unsigned int ac = ofw_get_address_cells(ofw_memory);
193
    unsigned int ac = ofw_get_address_cells(ofw_memory);
213
    unsigned int sc = ofw_get_size_cells(ofw_memory);
194
    unsigned int sc = ofw_get_size_cells(ofw_memory);
214
   
195
   
215
    int pos;
196
    int pos;
216
    map->total = 0;
197
    map->total = 0;
217
    map->count = 0;
198
    map->count = 0;
218
    for (pos = 0; (pos < ret / sizeof(unsigned int)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
199
    for (pos = 0; (pos < ret / sizeof(unsigned long)) && (map->count < MEMMAP_MAX_RECORDS); pos += ac + sc) {
219
        void * start = (void *) buf[pos + ac - 1];
200
        void * start = (void *) buf[pos + ac - 1];
220
        unsigned int size = buf[pos + ac + sc - 1];
201
        unsigned int size = buf[pos + ac + sc - 1];
221
       
202
       
222
        if (size > 0) {
203
        if (size > 0) {
223
            map->zones[map->count].start = start;
204
            map->zones[map->count].start = start;
224
            map->zones[map->count].size = size;
205
            map->zones[map->count].size = size;
225
            map->count++;
206
            map->count++;
226
            map->total += size;
207
            map->total += size;
227
        }
208
        }
228
    }
209
    }
229
}
210
}
230
 
211
 
231
 
212
 
232
int ofw_screen(screen_t *screen)
213
int ofw_screen(screen_t *screen)
233
{
214
{
234
    char device_name[BUF_SIZE];
215
    char device_name[BUF_SIZE];
235
   
216
   
236
    if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(char) * BUF_SIZE) <= 0)
217
    if (ofw_get_property(ofw_aliases, "screen", device_name, sizeof(device_name)) <= 0)
237
        return false;
218
        return false;
238
   
219
   
239
    phandle device = ofw_find_device(device_name);
220
    phandle device = ofw_find_device(device_name);
240
    if (device == -1)
221
    if (device == -1)
241
        return false;
222
        return false;
242
   
223
   
243
    if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0)
224
    if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0)
244
        return false;
225
        return false;
245
   
226
   
246
    if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
227
    if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0)
247
        return false;
228
        return false;
248
   
229
   
249
    if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
230
    if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0)
250
        return false;
231
        return false;
251
   
232
   
252
    if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
233
    if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0)
253
        return false;
234
        return false;
254
   
235
   
255
    if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
236
    if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0)
256
        return false;
237
        return false;
257
   
238
   
258
    return true;
239
    return true;
259
}
240
}
260
 
241
 
261
 
-
 
262
int ofw_keyboard(keyboard_t *keyboard)
-
 
263
{
-
 
264
    char device_name[BUF_SIZE];
-
 
265
   
-
 
266
    if (ofw_get_property(ofw_aliases, "macio", device_name, sizeof(char) * BUF_SIZE) <= 0)
-
 
267
        return false;
-
 
268
   
-
 
269
    phandle device = ofw_find_device(device_name);
-
 
270
    if (device == -1)
-
 
271
        return false;
-
 
272
   
-
 
273
    pci_reg_t macio;
-
 
274
    if (ofw_get_property(device, "assigned-addresses", &macio, sizeof(macio)) <= 0)
-
 
275
        return false;
-
 
276
   
-
 
277
    keyboard->addr = (void *) macio.addr.addr_lo;
-
 
278
    keyboard->size = macio.size_lo;
-
 
279
   
-
 
280
    return true;
-
 
281
}
-
 
282
 
242