1227825Stheraven/*- 2227825Stheraven * Copyright (c) 1991 The Regents of the University of California. 3227825Stheraven * All rights reserved. 4227825Stheraven * 5227825Stheraven * This code is derived from software contributed to Berkeley by 6227825Stheraven * William Jolitz. 7227825Stheraven * 8227825Stheraven * Redistribution and use in source and binary forms, with or without 9227825Stheraven * modification, are permitted provided that the following conditions 10227825Stheraven * are met: 11227825Stheraven * 1. Redistributions of source code must retain the above copyright 12227825Stheraven * notice, this list of conditions and the following disclaimer. 13227825Stheraven * 2. Redistributions in binary form must reproduce the above copyright 14227825Stheraven * notice, this list of conditions and the following disclaimer in the 15227825Stheraven * documentation and/or other materials provided with the distribution. 16227825Stheraven * 4. Neither the name of the University nor the names of its contributors 17227825Stheraven * may be used to endorse or promote products derived from this software 18227825Stheraven * without specific prior written permission. 19227825Stheraven * 20227825Stheraven * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21227825Stheraven * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22227825Stheraven * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23227825Stheraven * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24227825Stheraven * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25227825Stheraven * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26227825Stheraven * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27227825Stheraven * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28227825Stheraven * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29227825Stheraven * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30227825Stheraven * SUCH DAMAGE. 31262801Sdim * 32227825Stheraven * from: @(#)isa.c 7.2 (Berkeley) 5/13/91 33227825Stheraven */ 34227825Stheraven 35227825Stheraven#include <sys/cdefs.h> 36227825Stheraven__FBSDID("$FreeBSD$"); 37227825Stheraven 38227825Stheraven#include <sys/types.h> 39227825Stheraven#include <sys/syslog.h> 40227825Stheraven#include <sys/systm.h> 41227825Stheraven 42227825Stheraven#include <machine/md_var.h> 43227825Stheraven 44227825Stheraven#define NMI_PARITY 0x04 45227825Stheraven#define NMI_EPARITY 0x02 46227825Stheraven 47227825Stheraven/* 48227825Stheraven * Handle a NMI, possibly a machine check. 49227825Stheraven * return true to panic system, false to ignore. 50227825Stheraven */ 51227825Stheravenint 52227825Stheravenisa_nmi(int cd) 53227825Stheraven{ 54227825Stheraven int retval = 0; 55227825Stheraven int port = inb(0x33); 56227825Stheraven 57227825Stheraven log(LOG_CRIT, "NMI PC98 port = %x\n", port); 58227825Stheraven if (port & NMI_PARITY) { 59227825Stheraven log(LOG_CRIT, "BASE RAM parity error, likely hardware failure."); 60227825Stheraven retval = 1; 61227825Stheraven } else if (port & NMI_EPARITY) { 62227825Stheraven log(LOG_CRIT, "EXTENDED RAM parity error, likely hardware failure."); 63227825Stheraven retval = 1; 64227825Stheraven } else { 65227825Stheraven log(LOG_CRIT, "\nNMI Resume ??\n"); 66227825Stheraven } 67227825Stheraven 68227825Stheraven return(retval); 69227825Stheraven} 70227825Stheraven