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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 | #include <cpu.h> |
31 | #include <cpu.h> |
32 | 32 | ||
33 | ofw_entry ofw; |
33 | ofw_entry ofw; |
34 | 34 | ||
35 | phandle ofw_chosen; |
35 | phandle ofw_chosen; |
36 | ihandle ofw_stdout; |
36 | ihandle ofw_stdout; |
37 | 37 | ||
38 | void ofw_init(void) |
38 | void ofw_init(void) |
39 | { |
39 | { |
40 | ofw_chosen = ofw_find_device("/chosen"); |
40 | ofw_chosen = ofw_find_device("/chosen"); |
41 | if (ofw_chosen == -1) |
41 | if (ofw_chosen == -1) |
42 | ofw_done(); |
42 | ofw_done(); |
43 | 43 | ||
44 | if (ofw_call("getprop", 4, 1, ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
44 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
45 | ofw_stdout = 0; |
45 | ofw_stdout = 0; |
46 | } |
46 | } |
47 | 47 | ||
48 | void ofw_done(void) |
48 | void ofw_done(void) |
49 | { |
49 | { |
50 | ofw_call("exit", 0, 0); |
50 | ofw_call("exit", 0, 0); |
51 | cpu_halt(); |
51 | cpu_halt(); |
52 | } |
52 | } |
53 | 53 | ||
54 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
54 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
55 | { |
55 | { |
56 | va_list list; |
56 | va_list list; |
57 | ofw_args_t args; |
57 | ofw_args_t args; |
58 | int i; |
58 | int i; |
59 | 59 | ||
60 | args.service = service; |
60 | args.service = service; |
61 | args.nargs = nargs; |
61 | args.nargs = nargs; |
62 | args.nret = nret; |
62 | args.nret = nret; |
63 | 63 | ||
64 | va_start(list, nret); |
64 | va_start(list, nret); |
65 | for (i = 0; i < nargs; i++) |
65 | for (i = 0; i < nargs; i++) |
66 | args.args[i] = va_arg(list, ofw_arg_t); |
66 | args.args[i] = va_arg(list, ofw_arg_t); |
67 | va_end(list); |
67 | va_end(list); |
68 | 68 | ||
69 | for (i = 0; i < nret; i++) |
69 | for (i = 0; i < nret; i++) |
70 | args.args[i + nargs] = 0; |
70 | args.args[i + nargs] = 0; |
71 | 71 | ||
72 | ofw(&args); |
72 | ofw(&args); |
73 | 73 | ||
74 | return args.args[nargs]; |
74 | return args.args[nargs]; |
75 | } |
75 | } |
76 | 76 | ||
77 | void ofw_putchar(const char ch) |
77 | void ofw_putchar(const char ch) |
78 | { |
78 | { |
79 | if (ofw_stdout == 0) |
79 | if (ofw_stdout == 0) |
80 | return; |
80 | return; |
81 | 81 | ||
82 | ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
82 | ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
83 | } |
83 | } |
84 | 84 | ||
85 | phandle ofw_find_device(const char *name) |
85 | phandle ofw_find_device(const char *name) |
86 | { |
86 | { |
87 | return ofw_call("finddevice", 1, 1, name); |
87 | return ofw_call("finddevice", 1, 1, name); |
88 | } |
88 | } |
89 | 89 | ||
90 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
90 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
91 | { |
91 | { |
92 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
92 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
93 | } |
93 | } |
94 | 94 | ||
95 | void *ofw_claim(const void *addr, const int size, const int align) |
95 | void *ofw_claim(const void *addr, const int size, const int align) |
96 | { |
96 | { |
97 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
97 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
98 | } |
98 | } |
99 | 99 | ||
100 | void putchar(const char ch) |
100 | void putchar(const char ch) |
101 | { |
101 | { |
102 | ofw_putchar(ch); |
102 | ofw_putchar(ch); |
103 | } |
103 | } |
104 | 104 |