306 lines
7.1 KiB
C
306 lines
7.1 KiB
C
/* $NetBSD: consinit.c,v 1.2 2002/09/06 13:18:43 gehenna Exp $ */
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/*-
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* Copyright (c) 2001 Matthew Fredette
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* Copyright (c) 1999 Eduardo E. Horvath
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "opt_ddb.h"
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#include "opt_kgdb.h"
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#include "pcons.h"
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#include "kbd.h"
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#include "zs.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/tty.h>
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#include <sys/time.h>
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#include <sys/syslog.h>
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#include <sys/kgdb.h>
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#include <machine/autoconf.h>
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#include <machine/promlib.h>
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#include <machine/cpu.h>
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#include <machine/eeprom.h>
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#include <machine/psl.h>
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#include <machine/z8530var.h>
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#include <dev/cons.h>
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#include <sun2/dev/cons.h>
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static void prom_cnprobe __P((struct consdev *));
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static void prom_cninit __P((struct consdev *));
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int prom_cngetc __P((dev_t));
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static void prom_cnputc __P((dev_t, int));
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static void prom_cnpollc __P((dev_t, int));
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static void prom_cnputc __P((dev_t, int));
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#ifdef PROM_OBP_V2
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/*
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* The following several variables are related to
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* the configuration process, and are used in initializing
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* the machine.
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*/
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int prom_stdin_node; /* node ID of ROM's console input device */
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int prom_stdout_node; /* node ID of ROM's console output device */
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char prom_stdin_args[16];
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char prom_stdout_args[16];
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#endif /* PROM_OBP_V2 */
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/*
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* The console is set to this one initially,
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* which lets us use the PROM until consinit()
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* is called to select a real console.
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*/
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struct consdev consdev_prom = {
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prom_cnprobe,
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prom_cninit,
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prom_cngetc,
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prom_cnputc,
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prom_cnpollc,
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NULL,
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};
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/*
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* The console table pointer is statically initialized
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* to point to the PROM (output only) table, so that
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* early calls to printf will work.
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*/
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struct consdev *cn_tab = &consdev_prom;
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void
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prom_cnprobe(cd)
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struct consdev *cd;
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{
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#if NPCONS > 0
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extern const struct cdevsw pcons_cdevsw;
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cd->cn_dev = makedev(cdevsw_lookup_major(&pcons_cdevsw), 0);
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cd->cn_pri = CN_INTERNAL;
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#endif
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}
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int
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prom_cngetc(dev)
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dev_t dev;
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{
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int ch;
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#ifdef DDB
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static int nplus = 0;
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#endif
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ch = prom_getchar();
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#ifdef DDB
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if (ch == '+') {
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if (nplus++ > 3) Debugger();
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} else nplus = 0;
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#endif
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return ch;
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}
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static void
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prom_cninit(cn)
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struct consdev *cn;
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{
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}
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/*
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* PROM console output putchar.
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*/
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static void
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prom_cnputc(dev, c)
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dev_t dev;
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int c;
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{
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int s;
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s = splhigh();
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prom_putchar(c);
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splx(s);
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}
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void
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prom_cnpollc(dev, on)
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dev_t dev;
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int on;
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{
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if (on) {
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/* Entering debugger. */
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#if NFB > 0
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fb_unblank();
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#endif
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} else {
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/* Resuming kernel. */
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}
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#if NPCONS > 0
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pcons_cnpollc(dev, on);
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#endif
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}
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/*****************************************************************/
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#ifdef DEBUG
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#define DBPRINT(x) prom_printf x
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#else
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#define DBPRINT(x)
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#endif
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#ifdef notyet /* PROM_OBP_V2 */
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void
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prom_get_device_args(prop, dev, dev_sz, args, args_sz)
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const char *prop;
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char *dev;
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unsigned int dev_sz;
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char *args;
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unsigned int args_sz;
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{
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char *cp, buffer[128];
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getpropstringA(prom_findroot(), (char *)prop, buffer, sizeof buffer);
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/*
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* Extract device-specific arguments from a PROM device path (if any)
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*/
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cp = buffer + strlen(buffer);
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while (cp >= buffer) {
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if (*cp == ':') {
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strncpy(args, cp+1, args_sz);
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*cp = '\0';
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strncpy(dev, buffer, dev_sz);
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break;
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}
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cp--;
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}
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}
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#endif /* PROM_OBP_V2 */
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/*
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* This function replaces sys/dev/cninit.c
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* Determine which device is the console using
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* the PROM "input source" and "output sink".
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*/
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void
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consinit()
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{
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#ifdef notyet /* PROM_OBP_V2 */
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char buffer[128];
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#endif /* PROM_OBP_V2 */
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char *consname = "unknown";
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#if KGDB
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#if NZS > 0
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extern const struct cdevsw zstty_cdevsw;
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#endif
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#endif
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DBPRINT(("consinit()\r\n"));
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if (cn_tab != &consdev_prom) return;
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switch(prom_version()) {
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#ifdef PROM_OLDMON
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case PROM_OLDMON:
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case PROM_OBP_V0:
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switch(prom_stdin()) {
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case PROMDEV_KBD:
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consname = "keyboard/display";
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break;
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case PROMDEV_TTYA:
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consname = "ttya";
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break;
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case PROMDEV_TTYB:
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consname = "ttyb";
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break;
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}
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break;
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#endif /* PROM_OLDMON */
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#ifdef notyet /* PROM_OBP_V2 */
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case PROM_OBP_V2:
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case PROM_OBP_V3:
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case PROM_OPENFIRM:
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/* Save PROM arguments for device matching */
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prom_get_device_args("stdin-path",
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buffer,
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sizeof(buffer),
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prom_stdin_args,
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sizeof(prom_stdin_args));
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prom_get_device_args("stdout-path",
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buffer,
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sizeof(buffer),
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prom_stdout_args,
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sizeof(prom_stdout_args));
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/*
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* Translate the STDIO package instance (`ihandle') -- that
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* the PROM has already opened for us -- to a device tree
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* node (i.e. a `phandle').
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*/
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DBPRINT(("stdin instance = %x\r\n", prom_stdin()));
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if ((prom_stdin_node = prom_instance_to_package(prom_stdin())) == 0) {
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printf("WARNING: no PROM stdin\n");
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}
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DBPRINT(("stdin package = %x\r\n", prom_stdin_node));
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DBPRINT(("stdout instance = %x\r\n", prom_stdout()));
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if ((prom_stdout_node = prom_instance_to_package(prom_stdout())) == 0) {
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printf("WARNING: no PROM stdout\n");
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}
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DBPRINT(("stdout package = %x\r\n", prom_stdout_node));
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DBPRINT(("buffer @ %p\r\n", buffer));
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if (prom_stdin_node && prom_node_has_property(prom_stdin_node, "keyboard") {
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#if NKBD == 0
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printf("cninit: kdb/display not configured\n");
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#endif
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consname = "keyboard/display";
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} else if (prom_stdout_node)
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consname = buffer;
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#endif /* PROM_OBP_V2 */
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}
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printf("console is %s\n", consname);
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/* Initialize PROM console */
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(*cn_tab->cn_probe)(cn_tab);
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(*cn_tab->cn_init)(cn_tab);
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#ifdef KGDB
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/* Set up KGDB */
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#if NZS > 0
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if (cdevsw_lookup(kgdb_dev) == &zstty_cdevsw)
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zs_kgdb_init();
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#endif /* NZS > 0 */
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#endif /* KGDB */
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}
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