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| Rev | Author | Line No. | Line |
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| 186 | decky | 1 | /* |
| 2 | * Copyright (C) 2005 Martin Decky |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #include <arch/drivers/ofw.h> |
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| 30 | #include <stdarg.h> |
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| 31 | |||
| 32 | ihandle ofw_chosen; |
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| 33 | ihandle ofw_stdout; |
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| 34 | ofw_entry ofw; |
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| 35 | |||
| 36 | void ofw_init(void) |
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| 37 | { |
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| 38 | ofw_chosen = ofw_call("finddevice", 1, 1, "/chosen"); |
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| 39 | if (ofw_chosen == -1) |
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| 40 | ofw_done(); |
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| 41 | |||
| 42 | if (ofw_call("getprop", 4, 1, ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
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| 43 | ofw_stdout = 0; |
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| 44 | } |
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| 45 | |||
| 46 | void ofw_done(void) |
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| 47 | { |
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| 48 | ofw_call("exit", 0, 0); |
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| 49 | cpu_halt(); |
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| 50 | } |
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| 51 | |||
| 52 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
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| 53 | { |
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| 54 | va_list list; |
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| 55 | struct ofw_args_t args; |
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| 56 | int i; |
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| 57 | |||
| 58 | args.service = service; |
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| 59 | args.nargs = nargs; |
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| 60 | args.nret = nret; |
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| 61 | |||
| 62 | va_start(list, nret); |
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| 63 | for (i = 0; i < nargs; i++) |
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| 64 | args.args[i] = va_arg(list, ofw_arg_t); |
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| 65 | va_end(list); |
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| 66 | |||
| 67 | for (i = 0; i < nret; i++) |
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| 68 | args.args[i + nargs] = 0; |
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| 69 | |||
| 70 | ofw(&args); |
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| 71 | |||
| 72 | return args.args[nargs]; |
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| 73 | } |
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| 74 | |||
| 75 | void ofw_putchar(const char ch) |
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| 76 | { |
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| 77 | if (ofw_stdout == 0) |
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| 78 | return; |
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| 79 | |||
| 80 | ofw_call("write", 3, 1, ofw_stdout, ch, 1); |
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| 81 | } |
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| 82 | |||
| 83 | void putchar(const char ch) |
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| 84 | { |
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| 85 | ofw_putchar(ch); |
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| 86 | } |