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/* $OpenBSD: bug.c,v 1.3 1996/04/28 10:48:56 deraadt Exp $ */
/*
* Copyright (c) 1995 Theo de Raadt
* All rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Theo de Raadt
* 4. The name of the Author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* bug routines -- assumes that the necessary sections of memory
* are preserved.
*/
#include <sys/types.h>
#include <machine/prom.h>
#define MVMEPROM_CALL(x) \
asm volatile (__CONCAT("trap #15; .short ", __STRING(x)) )
/* returns 0 if no characters ready to read */
int
mvmeprom_instat()
{
u_short ret;
MVMEPROM_CALL(MVMEPROM_INSTAT);
asm volatile ("movew ccr,%0": "=d" (ret));
return (!(ret & 0x4));
}
void
mvmeprom_outstr(start, end)
char *start, *end;
{
asm volatile ("movl %0, sp@-" : "=a" (start));
asm volatile ("movl %0, sp@-" : "=a" (end));
MVMEPROM_CALL(MVMEPROM_OUTSTR);
}
void
mvmeprom_outln(start, end)
char *start, *end;
{
asm volatile ("movl %0, sp@-" : "=a" (start));
asm volatile ("movl %0, sp@-" : "=a" (end));
MVMEPROM_CALL(MVMEPROM_OUTSTRCRLF);
}
/* returns 0: success, nonzero: error */
int
mvmeprom_diskrd(arg)
struct mvmeprom_dskio *arg;
{
int ret;
asm volatile ("movel %0, sp@-"::"d" (arg));
MVMEPROM_CALL(MVMEPROM_DSKRD);
asm volatile ("movew ccr,%0": "=d" (ret));
return (!(ret & 0x4));
}
/* returns 0: success, nonzero: error */
int
mvmeprom_diskwr(arg)
struct mvmeprom_dskio *arg;
{
int ret;
asm volatile ("movel %0, sp@-"::"d" (arg));
MVMEPROM_CALL(MVMEPROM_DSKWR);
asm volatile ("movew ccr,%0": "=d" (ret));
return (!(ret & 0x4));
}
#ifdef NOTYET
mvmeprom_diskcfig() {}
mvmeprom_diskfmt(){}
mvmeprom_diskctrl(){}
#endif
/* BUG - timing routine */
void
mvmeprom_delay(msec)
int msec;
{
asm volatile ("movel %0,sp@-" : :"d" (msec));
MVMEPROM_CALL(MVMEPROM_DELAY);
}
/* BUG - return to bug routine */
void
mvmeprom_return()
{
MVMEPROM_CALL(MVMEPROM_EXIT);
/*NOTREACHED*/
}
/* BUG - query board routines */
struct mvmeprom_brdid *
mvmeprom_getbrdid()
{
struct mvmeprom_brdid *id;
asm volatile ("clrl sp@-");
MVMEPROM_CALL(MVMEPROM_GETBRDID);
asm volatile ("movel sp@+,%0": "=d" (id):);
return (id);
}
void
mvmeprom_rtc_rd(ptime)
struct mvmeprom_time *ptime;
{
asm volatile ("movel %0,sp@-" : :"a" (ptime));
MVMEPROM_CALL(MVMEPROM_RTC_RD);
}
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