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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 | /** @addtogroup genarch |
29 | /** @addtogroup genarch |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <genarch/ofw/ofw.h> |
35 | #include <genarch/ofw/ofw.h> |
36 | #include <arch/asm.h> |
36 | #include <arch/asm.h> |
37 | #include <stdarg.h> |
37 | #include <stdarg.h> |
38 | #include <cpu.h> |
38 | #include <cpu.h> |
39 | #include <arch/types.h> |
39 | #include <arch/types.h> |
40 | 40 | ||
41 | ofw_entry ofw; |
41 | ofw_entry ofw; |
42 | 42 | ||
43 | phandle ofw_chosen; |
43 | phandle ofw_chosen; |
44 | ihandle ofw_stdin; |
44 | ihandle ofw_stdin; |
45 | ihandle ofw_stdout; |
45 | ihandle ofw_stdout; |
46 | 46 | ||
47 | void ofw_init(void) |
47 | void ofw_init(void) |
48 | { |
48 | { |
49 | ofw_chosen = ofw_find_device("/chosen"); |
49 | ofw_chosen = ofw_find_device("/chosen"); |
50 | if (ofw_chosen == -1) |
50 | if (ofw_chosen == -1) |
51 | ofw_done(); |
51 | ofw_done(); |
52 | 52 | ||
53 | if (ofw_get_property(ofw_chosen, "stdin", &ofw_stdin, sizeof(ofw_stdin)) <= 0) |
53 | if (ofw_get_property(ofw_chosen, "stdin", &ofw_stdin, sizeof(ofw_stdin)) <= 0) |
54 | ofw_stdin = 0; |
54 | ofw_stdin = 0; |
55 | 55 | ||
56 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
56 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
57 | ofw_stdout = 0; |
57 | ofw_stdout = 0; |
58 | } |
58 | } |
59 | 59 | ||
60 | void ofw_done(void) |
60 | void ofw_done(void) |
61 | { |
61 | { |
62 | (void) ofw_call("exit", 0, 0); |
62 | (void) ofw_call("exit", 0, 0); |
63 | cpu_halt(); |
63 | cpu_halt(); |
64 | } |
64 | } |
65 | 65 | ||
66 | __native ofw_call(const char *service, const int nargs, const int nret, ...) |
66 | unative_t ofw_call(const char *service, const int nargs, const int nret, ...) |
67 | { |
67 | { |
68 | va_list list; |
68 | va_list list; |
69 | ofw_args_t args; |
69 | ofw_args_t args; |
70 | int i; |
70 | int i; |
71 | 71 | ||
72 | args.service = service; |
72 | args.service = service; |
73 | args.nargs = nargs; |
73 | args.nargs = nargs; |
74 | args.nret = nret; |
74 | args.nret = nret; |
75 | 75 | ||
76 | va_start(list, nret); |
76 | va_start(list, nret); |
77 | for (i = 0; i < nargs; i++) |
77 | for (i = 0; i < nargs; i++) |
78 | args.args[i] = va_arg(list, ofw_arg_t); |
78 | args.args[i] = va_arg(list, ofw_arg_t); |
79 | va_end(list); |
79 | va_end(list); |
80 | 80 | ||
81 | for (i = 0; i < nret; i++) |
81 | for (i = 0; i < nret; i++) |
82 | args.args[i + nargs] = 0; |
82 | args.args[i + nargs] = 0; |
83 | 83 | ||
84 | ofw(&args); |
84 | ofw(&args); |
85 | 85 | ||
86 | return args.args[nargs]; |
86 | return args.args[nargs]; |
87 | } |
87 | } |
88 | 88 | ||
89 | void ofw_putchar(const char ch) |
89 | void ofw_putchar(const char ch) |
90 | { |
90 | { |
91 | if (ofw_stdout == 0) |
91 | if (ofw_stdout == 0) |
92 | return; |
92 | return; |
93 | 93 | ||
94 | (void) ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
94 | (void) ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
95 | } |
95 | } |
96 | 96 | ||
97 | /** Read character from OFW's input. |
97 | /** Read character from OFW's input. |
98 | * |
98 | * |
99 | * This call is non-blocking. |
99 | * This call is non-blocking. |
100 | * |
100 | * |
101 | * @return 0 if no character was read, character read otherwise. |
101 | * @return 0 if no character was read, character read otherwise. |
102 | */ |
102 | */ |
103 | char ofw_getchar(void) |
103 | char ofw_getchar(void) |
104 | { |
104 | { |
105 | char ch; |
105 | char ch; |
106 | 106 | ||
107 | if (ofw_stdin == 0) |
107 | if (ofw_stdin == 0) |
108 | return 0; |
108 | return 0; |
109 | 109 | ||
110 | if (ofw_call("read", 3, 1, ofw_stdin, &ch, 1) == 1) |
110 | if (ofw_call("read", 3, 1, ofw_stdin, &ch, 1) == 1) |
111 | return ch; |
111 | return ch; |
112 | else |
112 | else |
113 | return 0; |
113 | return 0; |
114 | } |
114 | } |
115 | 115 | ||
116 | phandle ofw_find_device(const char *name) |
116 | phandle ofw_find_device(const char *name) |
117 | { |
117 | { |
118 | return (phandle) ofw_call("finddevice", 1, 1, name); |
118 | return (phandle) ofw_call("finddevice", 1, 1, name); |
119 | } |
119 | } |
120 | 120 | ||
121 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
121 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
122 | { |
122 | { |
123 | return (int) ofw_call("getprop", 4, 1, device, name, buf, buflen); |
123 | return (int) ofw_call("getprop", 4, 1, device, name, buf, buflen); |
124 | } |
124 | } |
125 | 125 | ||
126 | void *ofw_claim(const void *addr, const int size, const int align) |
126 | void *ofw_claim(const void *addr, const int size, const int align) |
127 | { |
127 | { |
128 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
128 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
129 | } |
129 | } |
130 | 130 | ||
131 | /** @} |
131 | /** @} |
132 | */ |
132 | */ |
133 | 133 |