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