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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 | |||
| 493 | jermar | 29 | #include <genarch/ofw/ofw.h> |
| 254 | decky | 30 | #include <arch/asm.h> |
| 186 | decky | 31 | #include <stdarg.h> |
| 201 | decky | 32 | #include <cpu.h> |
| 421 | jermar | 33 | #include <arch/types.h> |
| 186 | decky | 34 | |
| 35 | ofw_entry ofw; |
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| 36 | |||
| 191 | decky | 37 | phandle ofw_chosen; |
| 669 | jermar | 38 | ihandle ofw_stdin; |
| 191 | decky | 39 | ihandle ofw_stdout; |
| 40 | |||
| 186 | decky | 41 | void ofw_init(void) |
| 42 | { |
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| 191 | decky | 43 | ofw_chosen = ofw_find_device("/chosen"); |
| 186 | decky | 44 | if (ofw_chosen == -1) |
| 45 | ofw_done(); |
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| 46 | |||
| 669 | jermar | 47 | if (ofw_get_property(ofw_chosen, "stdin", &ofw_stdin, sizeof(ofw_stdin)) <= 0) |
| 48 | ofw_stdin = 0; |
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| 49 | |||
| 210 | decky | 50 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
| 669 | jermar | 51 | ofw_stdout = 0; |
| 186 | decky | 52 | } |
| 53 | |||
| 54 | void ofw_done(void) |
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| 55 | { |
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| 424 | jermar | 56 | (void) ofw_call("exit", 0, 0); |
| 186 | decky | 57 | cpu_halt(); |
| 58 | } |
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| 59 | |||
| 424 | jermar | 60 | __native ofw_call(const char *service, const int nargs, const int nret, ...) |
| 186 | decky | 61 | { |
| 62 | va_list list; |
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| 191 | decky | 63 | ofw_args_t args; |
| 186 | decky | 64 | int i; |
| 65 | |||
| 66 | args.service = service; |
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| 67 | args.nargs = nargs; |
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| 68 | args.nret = nret; |
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| 69 | |||
| 70 | va_start(list, nret); |
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| 71 | for (i = 0; i < nargs; i++) |
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| 72 | args.args[i] = va_arg(list, ofw_arg_t); |
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| 73 | va_end(list); |
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| 74 | |||
| 75 | for (i = 0; i < nret; i++) |
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| 76 | args.args[i + nargs] = 0; |
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| 77 | |||
| 78 | ofw(&args); |
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| 79 | |||
| 80 | return args.args[nargs]; |
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| 81 | } |
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| 82 | |||
| 83 | void ofw_putchar(const char ch) |
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| 84 | { |
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| 85 | if (ofw_stdout == 0) |
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| 86 | return; |
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| 87 | |||
| 424 | jermar | 88 | (void) ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
| 186 | decky | 89 | } |
| 90 | |||
| 669 | jermar | 91 | /** Read character from OFW's input. |
| 92 | * |
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| 93 | * This call is non-blocking. |
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| 94 | * |
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| 95 | * @return 0 if no character was read, character read otherwise. |
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| 96 | */ |
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| 97 | char ofw_getchar(void) |
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| 98 | { |
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| 99 | char ch; |
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| 100 | |||
| 101 | if (ofw_stdin == 0) |
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| 102 | return 0; |
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| 103 | |||
| 104 | if (ofw_call("read", 3, 1, ofw_stdin, &ch, 1) == 1) |
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| 105 | return ch; |
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| 106 | else |
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| 107 | return 0; |
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| 108 | } |
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| 109 | |||
| 191 | decky | 110 | phandle ofw_find_device(const char *name) |
| 111 | { |
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| 424 | jermar | 112 | return (phandle) ofw_call("finddevice", 1, 1, name); |
| 191 | decky | 113 | } |
| 114 | |||
| 115 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
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| 116 | { |
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| 424 | jermar | 117 | return (int) ofw_call("getprop", 4, 1, device, name, buf, buflen); |
| 191 | decky | 118 | } |
| 119 | |||
| 207 | decky | 120 | void *ofw_claim(const void *addr, const int size, const int align) |
| 121 | { |
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| 122 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
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| 123 | } |