| | 1 | /* |
| | 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * This file contains Original Code and/or Modifications of Original Code |
| | 7 | * as defined in and that are subject to the Apple Public Source License |
| | 8 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 9 | * compliance with the License. The rights granted to you under the License |
| | 10 | * may not be used to create, or enable the creation or redistribution of, |
| | 11 | * unlawful or unlicensed copies of an Apple operating system, or to |
| | 12 | * circumvent, violate, or enable the circumvention or violation of, any |
| | 13 | * terms of an Apple operating system software license agreement. |
| | 14 | * |
| | 15 | * Please obtain a copy of the License at |
| | 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. |
| | 17 | * |
| | 18 | * The Original Code and all software distributed under the License are |
| | 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 23 | * Please see the License for the specific language governing rights and |
| | 24 | * limitations under the License. |
| | 25 | * |
| | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * @OSF_COPYRIGHT@ |
| | 30 | */ |
| | 31 | /* |
| | 32 | */ |
| | 33 | |
| | 34 | /* |
| | 35 | * Olivetti Mach Console driver v0.0 |
| | 36 | * Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989 |
| | 37 | * All rights reserved. |
| | 38 | * |
| | 39 | */ |
| | 40 | /* |
| | 41 | * Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc., |
| | 42 | * Cupertino, California. |
| | 43 | * |
| | 44 | * All Rights Reserved |
| | 45 | * |
| | 46 | * Permission to use, copy, modify, and distribute this software and |
| | 47 | * its documentation for any purpose and without fee is hereby |
| | 48 | * granted, provided that the above copyright notice appears in all |
| | 49 | * copies and that both the copyright notice and this permission notice |
| | 50 | * appear in supporting documentation, and that the name of Olivetti |
| | 51 | * not be used in advertising or publicity pertaining to distribution |
| | 52 | * of the software without specific, written prior permission. |
| | 53 | * |
| | 54 | * OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE |
| | 55 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, |
| | 56 | * IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR |
| | 57 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM |
| | 58 | * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, |
| | 59 | * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION |
| | 60 | * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| | 61 | * |
| | 62 | * |
| | 63 | * Copyright 1988, 1989 by Intel Corporation, Santa Clara, California. |
| | 64 | * |
| | 65 | * All Rights Reserved |
| | 66 | * |
| | 67 | * Permission to use, copy, modify, and distribute this software and |
| | 68 | * its documentation for any purpose and without fee is hereby |
| | 69 | * granted, provided that the above copyright notice appears in all |
| | 70 | * copies and that both the copyright notice and this permission notice |
| | 71 | * appear in supporting documentation, and that the name of Intel |
| | 72 | * not be used in advertising or publicity pertaining to distribution |
| | 73 | * of the software without specific, written prior permission. |
| | 74 | * |
| | 75 | * INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE |
| | 76 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, |
| | 77 | * IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR |
| | 78 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM |
| | 79 | * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, |
| | 80 | * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION |
| | 81 | * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| | 82 | */ |
| | 83 | |
| | 84 | /* $ Header: $ */ |
| | 85 | |
| | 86 | #include <pexpert/pexpert.h> |
| | 87 | |
| | 88 | extern void cpu_shutdown(void); |
| | 89 | |
| | 90 | void kdreboot(void); |
| | 91 | |
| | 92 | /* |
| | 93 | * Common I/O ports. |
| | 94 | */ |
| | 95 | #define K_RDWR 0x60 /* keyboard data & cmds (read/write) */ |
| | 96 | #define K_STATUS 0x64 /* keybd status (read-only) */ |
| | 97 | #define K_CMD 0x64 /* keybd ctlr command (write-only) */ |
| | 98 | |
| | 99 | /* |
| | 100 | * Bit definitions for K_STATUS port. |
| | 101 | */ |
| | 102 | #define K_OBUF_FUL 0x01 /* output (from keybd) buffer full */ |
| | 103 | #define K_IBUF_FUL 0x02 /* input (to keybd) buffer full */ |
| | 104 | #define K_SYSFLAG 0x04 /* "System Flag" */ |
| | 105 | #define K_CMD_DATA 0x08 /* 1 = input buf has cmd, 0 = data */ |
| | 106 | #define K_KBD_INHBT 0x10 /* 0 if keyboard inhibited */ |
| | 107 | #define K_XMT_TIMEOUT 0x20 /* Transmit time out */ |
| | 108 | #define K_RCV_TIMEOUT 0x40 /* Receive time out */ |
| | 109 | |
| | 110 | /* |
| | 111 | * Keyboard controller commands (sent to K_CMD port). |
| | 112 | */ |
| | 113 | #define K_CMD_READ 0x20 /* read controller command byte */ |
| | 114 | #define K_CMD_WRITE 0x60 /* write controller command byte */ |
| | 115 | #define K_CMD_TEST 0xab /* test interface */ |
| | 116 | #define K_CMD_DUMP 0xac /* diagnostic dump */ |
| | 117 | #define K_CMD_DISBLE 0xad /* disable keyboard */ |
| | 118 | #define K_CMD_ENBLE 0xae /* enable keyboard */ |
| | 119 | #define K_CMD_RDKBD 0xc4 /* read keyboard ID */ |
| | 120 | #define K_CMD_ECHO 0xee /* used for diagnostic testing */ |
| | 121 | #define K_CMD_RESET 0xfe /* issue a system reset */ |
| | 122 | |
| | 123 | /* |
| | 124 | * kd_sendcmd |
| | 125 | * |
| | 126 | * This function sends a command byte to the keyboard command |
| | 127 | * port, but first waits until the input/output data buffer is |
| | 128 | * clear before sending the data. |
| | 129 | * |
| | 130 | */ |
| | 131 | |
| | 132 | static void |
| | 133 | kd_sendcmd(unsigned char ch) |
| | 134 | { |
| | 135 | while (inb(K_STATUS) & K_IBUF_FUL); |
| | 136 | outb(K_CMD, ch); |
| | 137 | } |
| | 138 | |
| | 139 | /* |
| | 140 | * kdreboot |
| | 141 | * |
| | 142 | * Send a command to the motherboard keyboard controller to |
| | 143 | * issue a hardware reset. |
| | 144 | */ |
| | 145 | |
| | 146 | void |
| | 147 | kdreboot(void) |
| | 148 | { |
| | 149 | kd_sendcmd( K_CMD_RESET ); |
| | 150 | |
| | 151 | /* |
| | 152 | * DRAT. We're still here. Let's try a "CPU shutdown", which consists |
| | 153 | * of clearing the IDTR and causing an exception. It's in locore.s |
| | 154 | */ |
| | 155 | cpu_shutdown(); |
| | 156 | /*NOTREACHED*/ |
| | 157 | } |
projects / apple / xnu.git / blame_incremental