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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 <arch/drivers/ofw.h> |
29 | #include <arch/drivers/ofw.h> |
30 | #include <stdarg.h> |
30 | #include <stdarg.h> |
31 | 31 | ||
32 | ihandle ofw_chosen; |
- | |
33 | ihandle ofw_stdout; |
- | |
34 | ofw_entry ofw; |
32 | ofw_entry ofw; |
35 | 33 | ||
- | 34 | phandle ofw_chosen; |
|
- | 35 | ihandle ofw_stdout; |
|
- | 36 | ||
36 | void ofw_init(void) |
37 | void ofw_init(void) |
37 | { |
38 | { |
38 | ofw_chosen = ofw_call("finddevice", 1, 1, "/chosen"); |
39 | ofw_chosen = ofw_find_device("/chosen"); |
39 | if (ofw_chosen == -1) |
40 | if (ofw_chosen == -1) |
40 | ofw_done(); |
41 | ofw_done(); |
41 | 42 | ||
42 | if (ofw_call("getprop", 4, 1, ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
43 | if (ofw_call("getprop", 4, 1, ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
43 | ofw_stdout = 0; |
44 | ofw_stdout = 0; |
44 | } |
45 | } |
45 | 46 | ||
46 | void ofw_done(void) |
47 | void ofw_done(void) |
47 | { |
48 | { |
48 | ofw_call("exit", 0, 0); |
49 | ofw_call("exit", 0, 0); |
49 | cpu_halt(); |
50 | cpu_halt(); |
50 | } |
51 | } |
51 | 52 | ||
52 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
53 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
53 | { |
54 | { |
54 | va_list list; |
55 | va_list list; |
55 | struct ofw_args_t args; |
56 | ofw_args_t args; |
56 | int i; |
57 | int i; |
57 | 58 | ||
58 | args.service = service; |
59 | args.service = service; |
59 | args.nargs = nargs; |
60 | args.nargs = nargs; |
60 | args.nret = nret; |
61 | args.nret = nret; |
61 | 62 | ||
62 | va_start(list, nret); |
63 | va_start(list, nret); |
63 | for (i = 0; i < nargs; i++) |
64 | for (i = 0; i < nargs; i++) |
64 | args.args[i] = va_arg(list, ofw_arg_t); |
65 | args.args[i] = va_arg(list, ofw_arg_t); |
65 | va_end(list); |
66 | va_end(list); |
66 | 67 | ||
67 | for (i = 0; i < nret; i++) |
68 | for (i = 0; i < nret; i++) |
68 | args.args[i + nargs] = 0; |
69 | args.args[i + nargs] = 0; |
69 | 70 | ||
70 | ofw(&args); |
71 | ofw(&args); |
71 | 72 | ||
72 | return args.args[nargs]; |
73 | return args.args[nargs]; |
73 | } |
74 | } |
74 | 75 | ||
75 | void ofw_putchar(const char ch) |
76 | void ofw_putchar(const char ch) |
76 | { |
77 | { |
77 | if (ofw_stdout == 0) |
78 | if (ofw_stdout == 0) |
78 | return; |
79 | return; |
79 | 80 | ||
80 | ofw_call("write", 3, 1, ofw_stdout, ch, 1); |
81 | ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
- | 82 | } |
|
- | 83 | ||
- | 84 | phandle ofw_find_device(const char *name) |
|
- | 85 | { |
|
- | 86 | return ofw_call("finddevice", 1, 1, name); |
|
- | 87 | } |
|
- | 88 | ||
- | 89 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
|
- | 90 | { |
|
- | 91 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
|
81 | } |
92 | } |
82 | 93 | ||
83 | void putchar(const char ch) |
94 | void putchar(const char ch) |
84 | { |
95 | { |
85 | ofw_putchar(ch); |
96 | ofw_putchar(ch); |
86 | } |
97 | } |
87 | 98 |