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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 "main.h" |
29 | #include "main.h" |
30 | 30 | ||
31 | ofw_entry ofw; |
31 | ofw_entry ofw; |
32 | 32 | ||
33 | phandle ofw_chosen; |
33 | phandle ofw_chosen; |
34 | ihandle ofw_stdout; |
34 | ihandle ofw_stdout; |
35 | 35 | ||
36 | void init(void) |
36 | void init(void) |
37 | { |
37 | { |
38 | ofw_chosen = ofw_find_device("/chosen"); |
38 | ofw_chosen = ofw_find_device("/chosen"); |
39 | if (ofw_chosen == -1) |
39 | if (ofw_chosen == -1) |
40 | ofw_call("exit", 0, 0); |
40 | ofw_call("exit", 0, 0); |
41 | 41 | ||
42 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
42 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
43 | ofw_stdout = 0; |
43 | ofw_stdout = 0; |
44 | } |
44 | } |
45 | 45 | ||
46 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
46 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
47 | { |
47 | { |
48 | va_list list; |
48 | va_list list; |
49 | ofw_args_t args; |
49 | ofw_args_t args; |
50 | int i; |
50 | int i; |
51 | 51 | ||
52 | args.service = service; |
52 | args.service = service; |
53 | args.nargs = nargs; |
53 | args.nargs = nargs; |
54 | args.nret = nret; |
54 | args.nret = nret; |
55 | 55 | ||
56 | va_start(list, nret); |
56 | va_start(list, nret); |
57 | for (i = 0; i < nargs; i++) |
57 | for (i = 0; i < nargs; i++) |
58 | args.args[i] = va_arg(list, ofw_arg_t); |
58 | args.args[i] = va_arg(list, ofw_arg_t); |
59 | va_end(list); |
59 | va_end(list); |
60 | 60 | ||
61 | for (i = 0; i < nret; i++) |
61 | for (i = 0; i < nret; i++) |
62 | args.args[i + nargs] = 0; |
62 | args.args[i + nargs] = 0; |
63 | 63 | ||
64 | ofw(&args); |
64 | ofw(&args); |
65 | 65 | ||
66 | return args.args[nargs]; |
66 | return args.args[nargs]; |
67 | } |
67 | } |
68 | 68 | ||
69 | void ofw_write(const char *str, const int len) |
69 | void ofw_write(const char *str, const int len) |
70 | { |
70 | { |
71 | if (ofw_stdout == 0) |
71 | if (ofw_stdout == 0) |
72 | return; |
72 | return; |
73 | 73 | ||
74 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
74 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
75 | } |
75 | } |
76 | 76 | ||
77 | void ofw_puts(const char *str) |
77 | void ofw_puts(const char *str) |
78 | { |
78 | { |
79 | int len = 0; |
79 | int len = 0; |
80 | 80 | ||
81 | while (str[len] != 0) |
81 | while (str[len] != 0) |
82 | len++; |
82 | len++; |
83 | 83 | ||
84 | ofw_write(str, len); |
84 | ofw_write(str, len); |
85 | } |
85 | } |
86 | 86 | ||
87 | phandle ofw_find_device(const char *name) |
87 | phandle ofw_find_device(const char *name) |
88 | { |
88 | { |
89 | return ofw_call("finddevice", 1, 1, name); |
89 | return ofw_call("finddevice", 1, 1, name); |
90 | } |
90 | } |
91 | 91 | ||
92 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
92 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
93 | { |
93 | { |
94 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
94 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
95 | } |
95 | } |
96 | 96 | ||
97 | void bootstrap(void) |
97 | void bootstrap(void) |
98 | { |
98 | { |
99 | ofw_puts("\nHelenOS PPC Bootloader\n"); |
99 | ofw_puts("\nHelenOS PPC Bootloader\n"); |
100 | 100 | ||
101 | while (1); |
101 | while (1); |
102 | } |
102 | } |
103 | 103 |