/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ /* * @OSF_COPYRIGHT@ */ /* */ /* * Olivetti Mach Console driver v0.0 * Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989 * All rights reserved. * */ /* * Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc., * Cupertino, California. * * All Rights Reserved * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby * granted, provided that the above copyright notice appears in all * copies and that both the copyright notice and this permission notice * appear in supporting documentation, and that the name of Olivetti * not be used in advertising or publicity pertaining to distribution * of the software without specific, written prior permission. * * OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, * IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * * * Copyright 1988, 1989 by Intel Corporation, Santa Clara, California. * * All Rights Reserved * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby * granted, provided that the above copyright notice appears in all * copies and that both the copyright notice and this permission notice * appear in supporting documentation, and that the name of Intel * not be used in advertising or publicity pertaining to distribution * of the software without specific, written prior permission. * * INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, * IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ /* $ Header: $ */ #include <pexpert/pexpert.h> /* * Common I/O ports. */ #define K_RDWR 0x60 /* keyboard data & cmds (read/write) */ #define K_STATUS 0x64 /* keybd status (read-only) */ #define K_CMD 0x64 /* keybd ctlr command (write-only) */ /* * Bit definitions for K_STATUS port. */ #define K_OBUF_FUL 0x01 /* output (from keybd) buffer full */ #define K_IBUF_FUL 0x02 /* input (to keybd) buffer full */ #define K_SYSFLAG 0x04 /* "System Flag" */ #define K_CMD_DATA 0x08 /* 1 = input buf has cmd, 0 = data */ #define K_KBD_INHBT 0x10 /* 0 if keyboard inhibited */ #define K_XMT_TIMEOUT 0x20 /* Transmit time out */ #define K_RCV_TIMEOUT 0x40 /* Receive time out */ /* * Keyboard controller commands (sent to K_CMD port). */ #define K_CMD_READ 0x20 /* read controller command byte */ #define K_CMD_WRITE 0x60 /* write controller command byte */ #define K_CMD_TEST 0xab /* test interface */ #define K_CMD_DUMP 0xac /* diagnostic dump */ #define K_CMD_DISBLE 0xad /* disable keyboard */ #define K_CMD_ENBLE 0xae /* enable keyboard */ #define K_CMD_RDKBD 0xc4 /* read keyboard ID */ #define K_CMD_ECHO 0xee /* used for diagnostic testing */ #define K_CMD_RESET 0xfe /* issue a system reset */ /* * cngetc / cnmaygetc * * Get one character using polling, rather than interrupts. * Used by the kernel debugger. */ int cngetc(void) { char c; if ( 0 == (*PE_poll_input)(0, &c) ) return ( c ); else return ( 0 ); } int cnmaygetc(void) { char c; if ( 0 == (*PE_poll_input)(0, &c) ) return ( c ); else return ( 0 ); } /* * kd_sendcmd * * This function sends a command byte to the keyboard command * port, but first waits until the input/output data buffer is * clear before sending the data. * */ static void kd_sendcmd(unsigned char ch) { while (inb(K_STATUS) & K_IBUF_FUL); outb(K_CMD, ch); } /* * kdreboot * * Send a command to the motherboard keyboard controller to * issue a hardware reset. */ void kdreboot(void) { extern void cpu_shutdown(void); kd_sendcmd( K_CMD_RESET ); /* * DRAT. We're still here. Let's try a "CPU shutdown", which consists * of clearing the IDTR and causing an exception. It's in locore.s */ cpu_shutdown(); /*NOTREACHED*/ }