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1 | /* |
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 "asm.h" |
30 | #include "asm.h" |
31 | #include "printf.h" |
31 | #include "printf.h" |
32 | 32 | ||
33 | #define MAX_OFW_ARGS 10 |
33 | #define MAX_OFW_ARGS 10 |
- | 34 | #define STRING_SIZE 1024 |
|
34 | 35 | ||
35 | typedef unsigned int ofw_arg_t; |
36 | typedef unsigned int ofw_arg_t; |
36 | typedef unsigned int ihandle; |
37 | typedef unsigned int ihandle; |
37 | typedef unsigned int phandle; |
38 | typedef unsigned int phandle; |
38 | 39 | ||
39 | /** OpenFirmware command structure |
40 | /** OpenFirmware command structure |
40 | * |
41 | * |
41 | */ |
42 | */ |
42 | typedef struct { |
43 | typedef struct { |
43 | const char *service; /**< Command name */ |
44 | const char *service; /**< Command name */ |
44 | unsigned int nargs; /**< Number of in arguments */ |
45 | unsigned int nargs; /**< Number of in arguments */ |
45 | unsigned int nret; /**< Number of out arguments */ |
46 | unsigned int nret; /**< Number of out arguments */ |
46 | ofw_arg_t args[MAX_OFW_ARGS]; /**< List of arguments */ |
47 | ofw_arg_t args[MAX_OFW_ARGS]; /**< List of arguments */ |
47 | } ofw_args_t; |
48 | } ofw_args_t; |
48 | 49 | ||
49 | typedef void (*ofw_entry)(ofw_args_t *); |
50 | typedef void (*ofw_entry)(ofw_args_t *); |
50 | 51 | ||
51 | 52 | ||
52 | ofw_entry ofw; |
53 | ofw_entry ofw; |
53 | 54 | ||
54 | phandle ofw_chosen; |
55 | phandle ofw_chosen; |
- | 56 | phandle ofw_aliases; |
|
55 | ihandle ofw_mmu; |
57 | ihandle ofw_mmu; |
56 | ihandle ofw_stdout; |
58 | ihandle ofw_stdout; |
57 | 59 | ||
58 | 60 | ||
59 | static int ofw_call(const char *service, const int nargs, const int nret, ...) |
61 | static int ofw_call(const char *service, const int nargs, const int nret, ...) |
60 | { |
62 | { |
61 | va_list list; |
63 | va_list list; |
62 | ofw_args_t args; |
64 | ofw_args_t args; |
63 | int i; |
65 | int i; |
64 | 66 | ||
65 | args.service = service; |
67 | args.service = service; |
66 | args.nargs = nargs; |
68 | args.nargs = nargs; |
67 | args.nret = nret; |
69 | args.nret = nret; |
68 | 70 | ||
69 | va_start(list, nret); |
71 | va_start(list, nret); |
70 | for (i = 0; i < nargs; i++) |
72 | for (i = 0; i < nargs; i++) |
71 | args.args[i] = va_arg(list, ofw_arg_t); |
73 | args.args[i] = va_arg(list, ofw_arg_t); |
72 | va_end(list); |
74 | va_end(list); |
73 | 75 | ||
74 | for (i = 0; i < nret; i++) |
76 | for (i = 0; i < nret; i++) |
75 | args.args[i + nargs] = 0; |
77 | args.args[i + nargs] = 0; |
76 | 78 | ||
77 | ofw(&args); |
79 | ofw(&args); |
78 | 80 | ||
79 | return args.args[nargs]; |
81 | return args.args[nargs]; |
80 | } |
82 | } |
81 | 83 | ||
82 | 84 | ||
83 | static phandle ofw_find_device(const char *name) |
85 | static phandle ofw_find_device(const char *name) |
84 | { |
86 | { |
85 | return ofw_call("finddevice", 1, 1, name); |
87 | return ofw_call("finddevice", 1, 1, name); |
86 | } |
88 | } |
87 | 89 | ||
88 | 90 | ||
89 | static int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
91 | static int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
90 | { |
92 | { |
91 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
93 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
92 | } |
94 | } |
93 | 95 | ||
94 | static ihandle ofw_open(const char *name) |
96 | static ihandle ofw_open(const char *name) |
95 | { |
97 | { |
96 | return ofw_call("open", 1, 1, name); |
98 | return ofw_call("open", 1, 1, name); |
97 | } |
99 | } |
98 | 100 | ||
99 | 101 | ||
100 | void init(void) |
102 | void init(void) |
101 | { |
103 | { |
102 | ofw_chosen = ofw_find_device("/chosen"); |
104 | ofw_chosen = ofw_find_device("/chosen"); |
103 | if (ofw_chosen == -1) |
105 | if (ofw_chosen == -1) |
104 | halt(); |
106 | halt(); |
105 | 107 | ||
106 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
108 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
107 | ofw_stdout = 0; |
109 | ofw_stdout = 0; |
108 | 110 | ||
- | 111 | ofw_aliases = ofw_find_device("/aliases"); |
|
- | 112 | if (ofw_aliases == -1) { |
|
- | 113 | puts("\nUnable to find /aliases device\n"); |
|
- | 114 | halt(); |
|
- | 115 | } |
|
- | 116 | ||
109 | ofw_mmu = ofw_open("/mmu"); |
117 | ofw_mmu = ofw_open("/mmu"); |
110 | if (ofw_mmu == -1) { |
118 | if (ofw_mmu == -1) { |
111 | puts("Unable to open /mmu node\n"); |
119 | puts("\nUnable to open /mmu node\n"); |
112 | halt(); |
120 | halt(); |
113 | } |
121 | } |
114 | } |
122 | } |
115 | 123 | ||
116 | 124 | ||
117 | void ofw_write(const char *str, const int len) |
125 | void ofw_write(const char *str, const int len) |
118 | { |
126 | { |
119 | if (ofw_stdout == 0) |
127 | if (ofw_stdout == 0) |
120 | return; |
128 | return; |
121 | 129 | ||
122 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
130 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
123 | } |
131 | } |
124 | 132 | ||
125 | 133 | ||
126 | void *ofw_translate(const void *virt) |
134 | void *ofw_translate(const void *virt) |
127 | { |
135 | { |
128 | return (void *) ofw_call("call-method", 7, 1, "translate", ofw_mmu, virt, 0, 0, 0, 0); |
136 | return (void *) ofw_call("call-method", 7, 1, "translate", ofw_mmu, virt, 0, 0, 0, 0); |
129 | } |
137 | } |
130 | 138 | ||
131 | 139 | ||
132 | int ofw_map(const void *phys, const void *virt, const int size, const int mode) |
140 | int ofw_map(const void *phys, const void *virt, const int size, const int mode) |
133 | { |
141 | { |
134 | return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys); |
142 | return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys); |
135 | } |
143 | } |
136 | 144 | ||
137 | 145 | ||
138 | int ofw_memmap(memmap_t *map) |
146 | int ofw_memmap(memmap_t *map) |
139 | { |
147 | { |
140 | int i; |
148 | int i; |
141 | int ret; |
149 | int ret; |
142 | 150 | ||
143 | phandle handle = ofw_find_device("/memory"); |
151 | phandle handle = ofw_find_device("/memory"); |
144 | if (handle == -1) |
152 | if (handle == -1) |
145 | return false; |
153 | return false; |
146 | 154 | ||
147 | ret = ofw_get_property(handle, "reg", &map->zones, sizeof(map->zones)); |
155 | ret = ofw_get_property(handle, "reg", &map->zones, sizeof(map->zones)); |
148 | if (ret == -1) |
156 | if (ret == -1) |
149 | return false; |
157 | return false; |
150 | 158 | ||
151 | map->total = 0; |
159 | map->total = 0; |
152 | map->count = 0; |
160 | map->count = 0; |
153 | for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
161 | for (i = 0; i < MEMMAP_MAX_RECORDS; i++) { |
154 | if (map->zones[i].size == 0) |
162 | if (map->zones[i].size == 0) |
155 | break; |
163 | break; |
156 | map->count++; |
164 | map->count++; |
157 | map->total += map->zones[i].size; |
165 | map->total += map->zones[i].size; |
158 | } |
166 | } |
159 | } |
167 | } |
- | 168 | ||
- | 169 | ||
- | 170 | int ofw_screen(screen_t *screen) |
|
- | 171 | { |
|
- | 172 | char device_name[STRING_SIZE]; |
|
- | 173 | ||
- | 174 | if (ofw_get_property(ofw_aliases, "screen", device_name, STRING_SIZE) <= 0) |
|
- | 175 | return false; |
|
- | 176 | ||
- | 177 | phandle device = ofw_find_device(device_name); |
|
- | 178 | if (device == -1) |
|
- | 179 | return false; |
|
- | 180 | ||
- | 181 | if (ofw_get_property(device, "address", &screen->addr, sizeof(screen->addr)) <= 0) |
|
- | 182 | return false; |
|
- | 183 | ||
- | 184 | if (ofw_get_property(device, "width", &screen->width, sizeof(screen->width)) <= 0) |
|
- | 185 | return false; |
|
- | 186 | ||
- | 187 | if (ofw_get_property(device, "height", &screen->height, sizeof(screen->height)) <= 0) |
|
- | 188 | return false; |
|
- | 189 | ||
- | 190 | if (ofw_get_property(device, "depth", &screen->bpp, sizeof(screen->bpp)) <= 0) |
|
- | 191 | return false; |
|
- | 192 | ||
- | 193 | if (ofw_get_property(device, "linebytes", &screen->scanline, sizeof(screen->scanline)) <= 0) |
|
- | 194 | return false; |
|
- | 195 | ||
- | 196 | return true; |
|
- | 197 | } |
|
160 | 198 |