171 lines
4.6 KiB
C
171 lines
4.6 KiB
C
/* $NetBSD: promio.c,v 1.25 1998/03/30 09:44:03 jonathan Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988 University of Utah.
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department and Ralph Campbell.
|
|
*
|
|
* 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 the University of
|
|
* California, Berkeley and its contributors.
|
|
* 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: Utah Hdr: cons.c 1.1 90/07/09
|
|
*
|
|
* @(#)cons.c 8.2 (Berkeley) 1/11/94
|
|
*/
|
|
|
|
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
|
|
__KERNEL_RCSID(0, "$NetBSD: promio.c,v 1.25 1998/03/30 09:44:03 jonathan Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/device.h>
|
|
#include <dev/cons.h>
|
|
|
|
#include <pmax/stand/dec_prom.h>
|
|
#include <pmax/dev/promiovar.h>
|
|
#include <pmax/pmax/pmaxtype.h>
|
|
|
|
|
|
static int romgetc __P ((dev_t));
|
|
static void romputc __P ((dev_t, int));
|
|
static void rompollc __P((dev_t, int));
|
|
|
|
/*
|
|
* Default consdev, for errors or warnings before
|
|
* consinit runs: use the PROM.
|
|
*/
|
|
struct consdev promcd = {
|
|
(void (*)(struct consdev *))0, /* probe */
|
|
(void (*)(struct consdev *))0, /* init */
|
|
(int (*)(dev_t)) romgetc, /* getc */
|
|
(void (*)(dev_t, int))romputc, /* putc */
|
|
(void (*)(dev_t, int))rompollc, /* pollc */
|
|
makedev (0, 0),
|
|
CN_DEAD,
|
|
};
|
|
|
|
/*
|
|
* Get character from ROM console.
|
|
*/
|
|
static int
|
|
romgetc(dev)
|
|
dev_t dev;
|
|
{
|
|
int s = splhigh ();
|
|
int chr;
|
|
chr = (*callv->_getchar)();
|
|
splx (s);
|
|
return chr;
|
|
}
|
|
|
|
|
|
/*
|
|
* Print a character on ROM console.
|
|
*/
|
|
static void
|
|
romputc (dev, c)
|
|
dev_t dev;
|
|
register int c;
|
|
{
|
|
int s;
|
|
s = splhigh();
|
|
(*callv->_printf)("%c", c);
|
|
splx(s);
|
|
}
|
|
|
|
|
|
/*
|
|
* Toggle polling. Not implemented in NetBSD.
|
|
*/
|
|
static void
|
|
rompollc (dev, c)
|
|
dev_t dev;
|
|
register int c;
|
|
{
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Call back to the PROM to find out what devices it is using
|
|
* as console.
|
|
* Encoding is idiosyncratic; see DECstation Owners Guide.
|
|
*/
|
|
void
|
|
prom_findcons(kbdslot, crtslot, prom_using_screen)
|
|
int *kbdslot;
|
|
int *crtslot;
|
|
int *prom_using_screen;
|
|
{
|
|
register char *oscon = 0; /* PROM osconsole string */
|
|
|
|
/*
|
|
* Get and parse the "osconsole" environment variable.
|
|
*/
|
|
*crtslot = *kbdslot = -1;
|
|
oscon = (*callv->_getenv)("osconsole");
|
|
if (oscon && *oscon >= '0' && *oscon <= '9') {
|
|
*kbdslot = *oscon - '0';
|
|
*prom_using_screen = 0;
|
|
while (*++oscon) {
|
|
if (*oscon == ',')
|
|
*prom_using_screen = 1;
|
|
else if (*prom_using_screen &&
|
|
*oscon >= '0' && *oscon <= '9') {
|
|
*crtslot = *kbdslot;
|
|
*kbdslot = *oscon - '0';
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* compensate for discrepancies in PROM syntax.
|
|
* XXX use cons_init vector instead?
|
|
*/
|
|
if (systype == DS_PMAX && *kbdslot == 1)
|
|
*prom_using_screen = 1;
|
|
|
|
/*
|
|
* On a 5000/200, The boot program uses the old, pre-rex PROM
|
|
* entrypoints, so the ROM sets osconsole to '1' like the PMAX.
|
|
* our parser loses. fix it by hand.
|
|
*/
|
|
if (systype == DS_3MAX && *crtslot == -1 && *kbdslot == 1) {
|
|
/* Try to use pmax onboard framebuffer */
|
|
*prom_using_screen = 1;
|
|
*crtslot = 0;
|
|
*kbdslot = 7;
|
|
}
|
|
|
|
}
|