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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 <genarch/ofw/ofw.h> |
29 | #include <genarch/ofw/ofw.h> |
30 | #include <arch/asm.h> |
30 | #include <arch/asm.h> |
31 | #include <stdarg.h> |
31 | #include <stdarg.h> |
32 | #include <cpu.h> |
32 | #include <cpu.h> |
33 | #include <arch/types.h> |
33 | #include <arch/types.h> |
34 | 34 | ||
35 | ofw_entry ofw; |
35 | ofw_entry ofw; |
36 | 36 | ||
37 | phandle ofw_chosen; |
37 | phandle ofw_chosen; |
38 | ihandle ofw_stdin; |
38 | ihandle ofw_stdin; |
39 | ihandle ofw_stdout; |
39 | ihandle ofw_stdout; |
40 | 40 | ||
41 | void ofw_init(void) |
41 | void ofw_init(void) |
42 | { |
42 | { |
43 | ofw_chosen = ofw_find_device("/chosen"); |
43 | ofw_chosen = ofw_find_device("/chosen"); |
44 | if (ofw_chosen == -1) |
44 | if (ofw_chosen == -1) |
45 | ofw_done(); |
45 | ofw_done(); |
46 | 46 | ||
47 | if (ofw_get_property(ofw_chosen, "stdin", &ofw_stdin, sizeof(ofw_stdin)) <= 0) |
47 | if (ofw_get_property(ofw_chosen, "stdin", &ofw_stdin, sizeof(ofw_stdin)) <= 0) |
48 | ofw_stdin = 0; |
48 | ofw_stdin = 0; |
49 | 49 | ||
50 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
50 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
51 | ofw_stdout = 0; |
51 | ofw_stdout = 0; |
52 | } |
52 | } |
53 | 53 | ||
54 | void ofw_done(void) |
54 | void ofw_done(void) |
55 | { |
55 | { |
56 | (void) ofw_call("exit", 0, 0); |
56 | (void) ofw_call("exit", 0, 0); |
57 | cpu_halt(); |
57 | cpu_halt(); |
58 | } |
58 | } |
59 | 59 | ||
60 | __native ofw_call(const char *service, const int nargs, const int nret, ...) |
60 | __native ofw_call(const char *service, const int nargs, const int nret, ...) |
61 | { |
61 | { |
62 | va_list list; |
62 | va_list list; |
63 | ofw_args_t args; |
63 | ofw_args_t args; |
64 | int i; |
64 | int i; |
65 | 65 | ||
66 | args.service = service; |
66 | args.service = service; |
67 | args.nargs = nargs; |
67 | args.nargs = nargs; |
68 | args.nret = nret; |
68 | args.nret = nret; |
69 | 69 | ||
70 | va_start(list, nret); |
70 | va_start(list, nret); |
71 | for (i = 0; i < nargs; i++) |
71 | for (i = 0; i < nargs; i++) |
72 | args.args[i] = va_arg(list, ofw_arg_t); |
72 | args.args[i] = va_arg(list, ofw_arg_t); |
73 | va_end(list); |
73 | va_end(list); |
74 | 74 | ||
75 | for (i = 0; i < nret; i++) |
75 | for (i = 0; i < nret; i++) |
76 | args.args[i + nargs] = 0; |
76 | args.args[i + nargs] = 0; |
77 | 77 | ||
78 | ofw(&args); |
78 | ofw(&args); |
79 | 79 | ||
80 | return args.args[nargs]; |
80 | return args.args[nargs]; |
81 | } |
81 | } |
82 | 82 | ||
83 | void ofw_putchar(const char ch) |
83 | void ofw_putchar(const char ch) |
84 | { |
84 | { |
85 | if (ofw_stdout == 0) |
85 | if (ofw_stdout == 0) |
86 | return; |
86 | return; |
87 | 87 | ||
88 | (void) ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
88 | (void) ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
89 | } |
89 | } |
90 | 90 | ||
91 | /** Read character from OFW's input. |
91 | /** Read character from OFW's input. |
92 | * |
92 | * |
93 | * This call is non-blocking. |
93 | * This call is non-blocking. |
94 | * |
94 | * |
95 | * @return 0 if no character was read, character read otherwise. |
95 | * @return 0 if no character was read, character read otherwise. |
96 | */ |
96 | */ |
97 | char ofw_getchar(void) |
97 | char ofw_getchar(void) |
98 | { |
98 | { |
99 | char ch; |
99 | char ch; |
100 | 100 | ||
101 | if (ofw_stdin == 0) |
101 | if (ofw_stdin == 0) |
102 | return 0; |
102 | return 0; |
103 | 103 | ||
104 | if (ofw_call("read", 3, 1, ofw_stdin, &ch, 1) == 1) |
104 | if (ofw_call("read", 3, 1, ofw_stdin, &ch, 1) == 1) |
105 | return ch; |
105 | return ch; |
106 | else |
106 | else |
107 | return 0; |
107 | return 0; |
108 | } |
108 | } |
109 | 109 | ||
110 | phandle ofw_find_device(const char *name) |
110 | phandle ofw_find_device(const char *name) |
111 | { |
111 | { |
112 | return (phandle) ofw_call("finddevice", 1, 1, name); |
112 | return (phandle) ofw_call("finddevice", 1, 1, name); |
113 | } |
113 | } |
114 | 114 | ||
115 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
115 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
116 | { |
116 | { |
117 | return (int) ofw_call("getprop", 4, 1, device, name, buf, buflen); |
117 | return (int) ofw_call("getprop", 4, 1, device, name, buf, buflen); |
118 | } |
118 | } |
119 | 119 | ||
120 | void *ofw_claim(const void *addr, const int size, const int align) |
120 | void *ofw_claim(const void *addr, const int size, const int align) |
121 | { |
121 | { |
122 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
122 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
123 | } |
123 | } |
124 | 124 |