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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 | ofw_entry ofw; |
32 | ofw_entry ofw; |
33 | 33 | ||
34 | phandle ofw_chosen; |
34 | phandle ofw_chosen; |
35 | ihandle ofw_mmu; |
35 | ihandle ofw_mmu; |
36 | ihandle ofw_stdout; |
36 | ihandle ofw_stdout; |
37 | 37 | ||
38 | 38 | ||
39 | void init(void) |
39 | void init(void) |
40 | { |
40 | { |
41 | ofw_chosen = ofw_find_device("/chosen"); |
41 | ofw_chosen = ofw_find_device("/chosen"); |
42 | if (ofw_chosen == -1) |
42 | if (ofw_chosen == -1) |
43 | halt(); |
43 | halt(); |
44 | 44 | ||
45 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
45 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
46 | ofw_stdout = 0; |
46 | ofw_stdout = 0; |
47 | 47 | ||
48 | ofw_mmu = ofw_open("/mmu"); |
48 | ofw_mmu = ofw_open("/mmu"); |
49 | if (ofw_mmu == -1) { |
49 | if (ofw_mmu == -1) { |
50 | puts("Unable to open /mmu node\n"); |
50 | puts("Unable to open /mmu node\n"); |
51 | halt(); |
51 | halt(); |
52 | } |
52 | } |
53 | } |
53 | } |
54 | 54 | ||
55 | void halt(void) |
55 | void halt(void) |
56 | { |
56 | { |
57 | ofw_call("exit", 0, 0); |
57 | ofw_call("exit", 0, 0); |
58 | } |
58 | } |
59 | 59 | ||
60 | 60 | ||
61 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
61 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
62 | { |
62 | { |
63 | va_list list; |
63 | va_list list; |
64 | ofw_args_t args; |
64 | ofw_args_t args; |
65 | int i; |
65 | int i; |
66 | 66 | ||
67 | args.service = service; |
67 | args.service = service; |
68 | args.nargs = nargs; |
68 | args.nargs = nargs; |
69 | args.nret = nret; |
69 | args.nret = nret; |
70 | 70 | ||
71 | va_start(list, nret); |
71 | va_start(list, nret); |
72 | for (i = 0; i < nargs; i++) |
72 | for (i = 0; i < nargs; i++) |
73 | args.args[i] = va_arg(list, ofw_arg_t); |
73 | args.args[i] = va_arg(list, ofw_arg_t); |
74 | va_end(list); |
74 | va_end(list); |
75 | 75 | ||
76 | for (i = 0; i < nret; i++) |
76 | for (i = 0; i < nret; i++) |
77 | args.args[i + nargs] = 0; |
77 | args.args[i + nargs] = 0; |
78 | 78 | ||
79 | ofw(&args); |
79 | ofw(&args); |
80 | 80 | ||
81 | if (nret > 0) |
- | |
82 | return args.args[nargs + nret - 1]; |
81 | return args.args[nargs]; |
83 | else |
- | |
84 | return 0; |
- | |
85 | } |
82 | } |
86 | 83 | ||
87 | 84 | ||
88 | ihandle ofw_open(const char *name) |
85 | ihandle ofw_open(const char *name) |
89 | { |
86 | { |
90 | return ofw_call("open", 1, 1, name); |
87 | return ofw_call("open", 1, 1, name); |
91 | } |
88 | } |
92 | 89 | ||
93 | 90 | ||
94 | void ofw_write(const char *str, const int len) |
91 | void ofw_write(const char *str, const int len) |
95 | { |
92 | { |
96 | if (ofw_stdout == 0) |
93 | if (ofw_stdout == 0) |
97 | return; |
94 | return; |
98 | 95 | ||
99 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
96 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
100 | } |
97 | } |
101 | 98 | ||
102 | 99 | ||
103 | phandle ofw_find_device(const char *name) |
100 | phandle ofw_find_device(const char *name) |
104 | { |
101 | { |
105 | return ofw_call("finddevice", 1, 1, name); |
102 | return ofw_call("finddevice", 1, 1, name); |
106 | } |
103 | } |
107 | 104 | ||
108 | 105 | ||
109 | int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
106 | int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
110 | { |
107 | { |
111 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
108 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
112 | } |
109 | } |
113 | 110 | ||
114 | 111 | ||
115 | void *ofw_claim(const void *addr, const int size, const int align) |
112 | void *ofw_translate(const void *virt) |
116 | { |
113 | { |
117 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
114 | return (void *) ofw_call("call-method", 7, 1, "translate", ofw_mmu, virt, 0, 0, 0, 0); |
118 | } |
115 | } |
119 | 116 | ||
120 | 117 | ||
121 | void *ofw_translate(const void *virt) |
118 | int ofw_map(const void *phys, const void *virt, const int size, const int mode) |
122 | { |
119 | { |
123 | return (void *) ofw_call_method(ofw_mmu, "translate", 1, 5, virt); |
120 | return ofw_call("call-method", 6, 1, "map", ofw_mmu, mode, size, virt, phys); |
124 | } |
121 | } |
125 | 122 |