70 lines
2.4 KiB
C
70 lines
2.4 KiB
C
/*-
|
|
* Copyright (c) 1991 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* William Jolitz.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: @(#)isa.c 7.2 (Berkeley) 5/13/91
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/syslog.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <machine/md_var.h>
|
|
|
|
#define NMI_PARITY 0x04
|
|
#define NMI_EPARITY 0x02
|
|
|
|
/*
|
|
* Handle a NMI, possibly a machine check.
|
|
* return true to panic system, false to ignore.
|
|
*/
|
|
int
|
|
isa_nmi(int cd)
|
|
{
|
|
int retval = 0;
|
|
int port = inb(0x33);
|
|
|
|
log(LOG_CRIT, "NMI PC98 port = %x\n", port);
|
|
if (port & NMI_PARITY) {
|
|
log(LOG_CRIT, "BASE RAM parity error, likely hardware failure.");
|
|
retval = 1;
|
|
} else if (port & NMI_EPARITY) {
|
|
log(LOG_CRIT, "EXTENDED RAM parity error, likely hardware failure.");
|
|
retval = 1;
|
|
} else {
|
|
log(LOG_CRIT, "\nNMI Resume ??\n");
|
|
}
|
|
|
|
return(retval);
|
|
}
|