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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 885 | 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 "ofw.h" |
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| 953 | decky | 30 | #include "printf.h" |
| 885 | decky | 31 | |
| 32 | ofw_entry ofw; |
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| 33 | |||
| 34 | phandle ofw_chosen; |
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| 953 | decky | 35 | ihandle ofw_mmu; |
| 885 | decky | 36 | ihandle ofw_stdout; |
| 37 | |||
| 38 | |||
| 39 | void init(void) |
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| 40 | { |
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| 41 | ofw_chosen = ofw_find_device("/chosen"); |
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| 42 | if (ofw_chosen == -1) |
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| 953 | decky | 43 | halt(); |
| 885 | decky | 44 | |
| 45 | if (ofw_get_property(ofw_chosen, "stdout", &ofw_stdout, sizeof(ofw_stdout)) <= 0) |
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| 46 | ofw_stdout = 0; |
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| 953 | decky | 47 | |
| 48 | ofw_mmu = ofw_open("/mmu"); |
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| 49 | if (ofw_mmu == -1) { |
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| 50 | puts("Unable to open /mmu node\n"); |
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| 51 | halt(); |
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| 52 | } |
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| 885 | decky | 53 | } |
| 54 | |||
| 953 | decky | 55 | void halt(void) |
| 56 | { |
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| 57 | ofw_call("exit", 0, 0); |
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| 58 | } |
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| 885 | decky | 59 | |
| 953 | decky | 60 | |
| 885 | decky | 61 | int ofw_call(const char *service, const int nargs, const int nret, ...) |
| 62 | { |
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| 63 | va_list list; |
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| 64 | ofw_args_t args; |
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| 65 | int i; |
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| 66 | |||
| 67 | args.service = service; |
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| 68 | args.nargs = nargs; |
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| 69 | args.nret = nret; |
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| 70 | |||
| 71 | va_start(list, nret); |
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| 72 | for (i = 0; i < nargs; i++) |
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| 73 | args.args[i] = va_arg(list, ofw_arg_t); |
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| 74 | va_end(list); |
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| 75 | |||
| 76 | for (i = 0; i < nret; i++) |
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| 77 | args.args[i + nargs] = 0; |
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| 78 | |||
| 79 | ofw(&args); |
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| 80 | |||
| 953 | decky | 81 | if (nret > 0) |
| 82 | return args.args[nargs + nret - 1]; |
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| 83 | else |
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| 84 | return 0; |
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| 885 | decky | 85 | } |
| 86 | |||
| 87 | |||
| 953 | decky | 88 | ihandle ofw_open(const char *name) |
| 89 | { |
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| 90 | return ofw_call("open", 1, 1, name); |
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| 91 | } |
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| 92 | |||
| 93 | |||
| 885 | decky | 94 | void ofw_write(const char *str, const int len) |
| 95 | { |
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| 96 | if (ofw_stdout == 0) |
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| 97 | return; |
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| 98 | |||
| 99 | ofw_call("write", 3, 1, ofw_stdout, str, len); |
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| 100 | } |
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| 101 | |||
| 102 | |||
| 103 | phandle ofw_find_device(const char *name) |
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| 104 | { |
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| 105 | return ofw_call("finddevice", 1, 1, name); |
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| 106 | } |
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| 107 | |||
| 108 | |||
| 109 | int ofw_get_property(const phandle device, const char *name, const void *buf, const int buflen) |
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| 110 | { |
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| 111 | return ofw_call("getprop", 4, 1, device, name, buf, buflen); |
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| 112 | } |
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| 113 | |||
| 114 | |||
| 115 | void *ofw_claim(const void *addr, const int size, const int align) |
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| 116 | { |
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| 117 | return (void *) ofw_call("claim", 3, 1, addr, size, align); |
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| 118 | } |
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| 953 | decky | 119 | |
| 120 | |||
| 121 | void *ofw_translate(const void *virt) |
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| 122 | { |
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| 123 | return (void *) ofw_call_method(ofw_mmu, "translate", 1, 5, virt); |
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| 124 | } |