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