NetBSD/sys/arch/sparc64/dev/consinit.c

234 lines
5.5 KiB
C

/* $NetBSD: consinit.c,v 1.11 2001/08/31 17:10:54 eeh Exp $ */
/*-
* Copyright (c) 1999 Eduardo E. Horvath
* 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. 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.
*/
#include "opt_ddb.h"
#include "pcons.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/device.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/tty.h>
#include <sys/time.h>
#include <sys/syslog.h>
#include <machine/autoconf.h>
#include <machine/openfirm.h>
#include <machine/bsd_openprom.h>
#include <machine/conf.h>
#include <machine/cpu.h>
#include <machine/eeprom.h>
#include <machine/psl.h>
#include <machine/z8530var.h>
#include <machine/sparc64.h>
#include <dev/cons.h>
#include <sparc64/dev/cons.h>
static void prom_cnprobe __P((struct consdev *));
static void prom_cninit __P((struct consdev *));
int prom_cngetc __P((dev_t));
static void prom_cnputc __P((dev_t, int));
static void prom_cnpollc __P((dev_t, int));
static void prom_cnputc __P((dev_t, int));
int stdin = NULL, stdout = NULL;
/*
* The console is set to this one initially,
* which lets us use the PROM until consinit()
* is called to select a real console.
*/
struct consdev consdev_prom = {
prom_cnprobe,
prom_cninit,
prom_cngetc,
prom_cnputc,
prom_cnpollc,
NULL,
};
/*
* The console table pointer is statically initialized
* to point to the PROM (output only) table, so that
* early calls to printf will work.
*/
struct consdev *cn_tab = &consdev_prom;
void
prom_cnprobe(cd)
struct consdev *cd;
{
#if NPCONS > 0
int maj;
for (maj = 0; maj < nchrdev; maj++)
if (cdevsw[maj].d_open == pconsopen)
break;
cd->cn_dev = makedev(maj, 0);
cd->cn_pri = CN_INTERNAL;
#endif
}
int
prom_cngetc(dev)
dev_t dev;
{
unsigned char ch = '\0';
int l;
#ifdef DDB
static int nplus = 0;
#endif
while ((l = OF_read(stdin, &ch, 1)) != 1)
/* void */;
#ifdef DDB
if (ch == '+') {
if (nplus++ > 3) Debugger();
} else nplus = 0;
#endif
if (ch == '\r')
ch = '\n';
return ch;
}
static void
prom_cninit(cn)
struct consdev *cn;
{
if (!stdin) stdin = OF_stdin();
if (!stdout) stdout = OF_stdout();
}
/*
* PROM console output putchar.
*/
static void
prom_cnputc(dev, c)
dev_t dev;
int c;
{
int s;
char c0 = (c & 0x7f);
#if 0
if (!stdout) stdout = OF_stdout();
#endif
s = splhigh();
OF_write(stdout, &c0, 1);
splx(s);
}
void
prom_cnpollc(dev, on)
dev_t dev;
int on;
{
if (on) {
/* Entering debugger. */
#if NFB > 0
fb_unblank();
#endif
} else {
/* Resuming kernel. */
}
#if NPCONS > 0
pcons_cnpollc(dev, on);
#endif
}
/*****************************************************************/
#ifdef DEBUG
#define DBPRINT(x) prom_printf x
#else
#define DBPRINT(x)
#endif
/*
* This function replaces sys/dev/cninit.c
* Determine which device is the console using
* the PROM "input source" and "output sink".
*/
void
consinit()
{
register int chosen;
char buffer[128];
extern int stdinnode, fbnode;
char *consname = "unknown";
DBPRINT(("consinit()\r\n"));
if (cn_tab != &consdev_prom) return;
DBPRINT(("setting up stdin\r\n"));
chosen = OF_finddevice("/chosen");
DBPRINT(("chosen = %x, stdin @ %p\r\n", chosen, &stdin));
OF_getprop(chosen, "stdin", &stdin, sizeof(stdin));
DBPRINT(("stdin instance = %x\r\n", stdin));
if ((stdinnode = OF_instance_to_package(stdin)) == 0) {
printf("WARNING: no PROM stdin\n");
}
DBPRINT(("stdin node = %x\r\n", stdinnode));
DBPRINT(("setting up stdout\r\n"));
OF_getprop(chosen, "stdout", &stdout, sizeof(stdout));
DBPRINT(("stdout instance = %x\r\n", stdout));
if ((fbnode = OF_instance_to_package(stdout)) == 0)
printf("WARNING: no PROM stdout\n");
DBPRINT(("stdout package = %x\r\n", fbnode));
DBPRINT(("buffer @ %p\r\n", buffer));
if (stdinnode && (OF_getproplen(stdinnode,"keyboard") >= 0)) {
#if NKBD > 0
printf("cninit: kdb/display not configured\n");
#endif
consname = "keyboard/display";
} else if (fbnode &&
(OF_instance_to_path(stdin, buffer, sizeof(buffer)) >= 0)) {
consname = buffer;
}
printf("console is %s\n", consname);
/* Initialize PROM console */
(*cn_tab->cn_probe)(cn_tab);
(*cn_tab->cn_init)(cn_tab);
}