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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 | 31 | ||
| 31 | ofw_entry ofw; |
32 | ofw_entry ofw; |
| 32 | 33 | ||
| 33 | phandle ofw_chosen; |
34 | phandle ofw_chosen; |
| - | 35 | ihandle ofw_mmu; |
|
| 34 | ihandle ofw_stdout; |
36 | ihandle ofw_stdout; |
| 35 | 37 | ||
| 36 | 38 | ||
| 37 | void init(void) |
39 | void init(void) |
| 38 | { |
40 | { |
| 39 | ofw_chosen = ofw_find_device("/chosen"); |
41 | ofw_chosen = ofw_find_device("/chosen"); |
| 40 | if (ofw_chosen == -1) |
42 | if (ofw_chosen == -1) |
| 41 | ofw_call("exit", 0, 0); |
43 | halt(); |
| 42 | 44 | ||
| 43 | 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) |
| 44 | 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); |
|
| 45 | } |
58 | } |
| 46 | 59 | ||
| 47 | 60 | ||
| 48 | 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, ...) |
| 49 | { |
62 | { |
| 50 | va_list list; |
63 | va_list list; |
| 51 | ofw_args_t args; |
64 | ofw_args_t args; |
| 52 | int i; |
65 | int i; |
| 53 | 66 | ||
| 54 | args.service = service; |
67 | args.service = service; |
| 55 | args.nargs = nargs; |
68 | args.nargs = nargs; |
| 56 | args.nret = nret; |
69 | args.nret = nret; |
| 57 | 70 | ||
| 58 | va_start(list, nret); |
71 | va_start(list, nret); |
| 59 | for (i = 0; i < nargs; i++) |
72 | for (i = 0; i < nargs; i++) |
| 60 | args.args[i] = va_arg(list, ofw_arg_t); |
73 | args.args[i] = va_arg(list, ofw_arg_t); |
| 61 | va_end(list); |
74 | va_end(list); |
| 62 | 75 | ||
| 63 | for (i = 0; i < nret; i++) |
76 | for (i = 0; i < nret; i++) |
| 64 | args.args[i + nargs] = 0; |
77 | args.args[i + nargs] = 0; |
| 65 | 78 | ||
| 66 | ofw(&args); |
79 | ofw(&args); |
| 67 | 80 | ||
| - | 81 | if (nret > 0) |
|
| 68 | return args.args[nargs]; |
82 | return args.args[nargs + nret - 1]; |
| - | 83 | else |
|
| - | 84 | return 0; |
|
| 69 | } |
85 | } |
| 70 | 86 | ||
| 71 | 87 | ||
| 72 | void ofw_write(const char *str, const int len) |
88 | ihandle ofw_open(const char *name) |
| 73 | { |
89 | { |
| 74 | if (ofw_stdout == 0) |
- | |
| 75 | return; |
- | |
| 76 | - | ||
| 77 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
90 | return ofw_call("open", 1, 1, name); |
| 78 | } |
91 | } |
| 79 | 92 | ||
| 80 | 93 | ||
| 81 | void ofw_puts(const char *str) |
94 | void ofw_write(const char *str, const int len) |
| 82 | { |
95 | { |
| 83 | int len = 0; |
- | |
| 84 | - | ||
| 85 | while (str[len] != 0) |
96 | if (ofw_stdout == 0) |
| 86 | len++; |
97 | return; |
| 87 | 98 | ||
| 88 | ofw_write(str, len); |
99 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
| 89 | } |
100 | } |
| 90 | 101 | ||
| 91 | 102 | ||
| 92 | phandle ofw_find_device(const char *name) |
103 | phandle ofw_find_device(const char *name) |
| 93 | { |
104 | { |
| 94 | return ofw_call("finddevice", 1, 1, name); |
105 | return ofw_call("finddevice", 1, 1, name); |
| 95 | } |
106 | } |
| 96 | 107 | ||
| 97 | 108 | ||
| 98 | int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
109 | int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
| 99 | { |
110 | { |
| 100 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
111 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
| 101 | } |
112 | } |
| 102 | 113 | ||
| 103 | 114 | ||
| 104 | void *ofw_claim(const void *addr, const int size, const int align) |
115 | void *ofw_claim(const void *addr, const int size, const int align) |
| 105 | { |
116 | { |
| 106 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
117 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
| 107 | } |
118 | } |
| - | 119 | ||
| - | 120 | ||
| - | 121 | void *ofw_translate(const void *virt) |
|
| - | 122 | { |
|
| - | 123 | return (void *) ofw_call_method(ofw_mmu, "translate", 1, 5, virt); |
|
| - | 124 | } |
|
| 108 | 125 | ||