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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 | |||
| 1777 | jermar | 29 | /** @addtogroup genarch |
| 1702 | cejka | 30 | * @{ |
| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 493 | jermar | 35 | #include <genarch/ofw/ofw.h> |
| 254 | decky | 36 | #include <arch/asm.h> |
| 186 | decky | 37 | #include <stdarg.h> |
| 201 | decky | 38 | #include <cpu.h> |
| 421 | jermar | 39 | #include <arch/types.h> |
| 186 | decky | 40 | |
| 41 | ofw_entry ofw; |
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| 42 | |||
| 191 | decky | 43 | phandle ofw_chosen; |
| 669 | jermar | 44 | ihandle ofw_stdin; |
| 191 | decky | 45 | ihandle ofw_stdout; |
| 46 | |||
| 186 | decky | 47 | void ofw_init(void) |
| 48 | { |
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| 191 | decky | 49 | ofw_chosen = ofw_find_device("/chosen"); |
| 186 | decky | 50 | if (ofw_chosen == -1) |
| 51 | ofw_done(); |
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| 52 | |||
| 669 | jermar | 53 | if (ofw_get_property(ofw_chosen, "stdin", &ofw_stdin, sizeof(ofw_stdin)) <= 0) |
| 54 | ofw_stdin = 0; |
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| 55 | |||
| 210 | decky | 56 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
| 669 | jermar | 57 | ofw_stdout = 0; |
| 186 | decky | 58 | } |
| 59 | |||
| 60 | void ofw_done(void) |
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| 61 | { |
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| 424 | jermar | 62 | (void) ofw_call("exit", 0, 0); |
| 186 | decky | 63 | cpu_halt(); |
| 64 | } |
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| 65 | |||
| 1780 | jermar | 66 | unative_t ofw_call(const char *service, const int nargs, const int nret, ...) |
| 186 | decky | 67 | { |
| 68 | va_list list; |
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| 191 | decky | 69 | ofw_args_t args; |
| 186 | decky | 70 | int i; |
| 71 | |||
| 72 | args.service = service; |
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| 73 | args.nargs = nargs; |
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| 74 | args.nret = nret; |
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| 75 | |||
| 76 | va_start(list, nret); |
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| 77 | for (i = 0; i < nargs; i++) |
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| 78 | args.args[i] = va_arg(list, ofw_arg_t); |
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| 79 | va_end(list); |
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| 80 | |||
| 81 | for (i = 0; i < nret; i++) |
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| 82 | args.args[i + nargs] = 0; |
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| 83 | |||
| 84 | ofw(&args); |
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| 85 | |||
| 86 | return args.args[nargs]; |
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| 87 | } |
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| 88 | |||
| 89 | void ofw_putchar(const char ch) |
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| 90 | { |
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| 91 | if (ofw_stdout == 0) |
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| 92 | return; |
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| 93 | |||
| 424 | jermar | 94 | (void) ofw_call("write", 3, 1, ofw_stdout, &ch, 1); |
| 186 | decky | 95 | } |
| 96 | |||
| 669 | jermar | 97 | /** Read character from OFW's input. |
| 98 | * |
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| 99 | * This call is non-blocking. |
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| 100 | * |
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| 101 | * @return 0 if no character was read, character read otherwise. |
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| 102 | */ |
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| 103 | char ofw_getchar(void) |
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| 104 | { |
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| 105 | char ch; |
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| 106 | |||
| 107 | if (ofw_stdin == 0) |
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| 108 | return 0; |
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| 109 | |||
| 110 | if (ofw_call("read", 3, 1, ofw_stdin, &ch, 1) == 1) |
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| 111 | return ch; |
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| 112 | else |
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| 113 | return 0; |
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| 114 | } |
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| 115 | |||
| 191 | decky | 116 | phandle ofw_find_device(const char *name) |
| 117 | { |
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| 424 | jermar | 118 | return (phandle) ofw_call("finddevice", 1, 1, name); |
| 191 | decky | 119 | } |
| 120 | |||
| 121 | int ofw_get_property(const phandle device, const char *name, void *buf, const int buflen) |
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| 122 | { |
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| 424 | jermar | 123 | return (int) ofw_call("getprop", 4, 1, device, name, buf, buflen); |
| 191 | decky | 124 | } |
| 125 | |||
| 207 | decky | 126 | void *ofw_claim(const void *addr, const int size, const int align) |
| 127 | { |
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| 128 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
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| 129 | } |
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| 1702 | cejka | 130 | |
| 1777 | jermar | 131 | /** @} |
| 1702 | cejka | 132 | */ |