initial import of NetBSD tree

1 files changed, 86 insertions, 0 deletions

diff --git a/sys/dev/cninit.c b/sys/dev/cninit.c
new file mode 100644
index 00000000000..9b24717dd65
--- /dev/null
+++ b/sys/dev/cninit.c
@@ -0,0 +1,86 @@
+/*	$NetBSD: cninit.c,v 1.2 1995/04/11 22:08:10 pk Exp $	*/
+
+/*
+ * Copyright (c) 1988 University of Utah.
+ * Copyright (c) 1990, 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.
+ *
+ * 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 $Hdr: cons.c 1.7 92/01/21$
+ *
+ *	@(#)cons.c	8.2 (Berkeley) 1/12/94
+ */
+
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/user.h>
+#include <sys/systm.h>
+#include <sys/buf.h>
+#include <sys/ioctl.h>
+#include <sys/tty.h>
+#include <sys/file.h>
+#include <sys/conf.h>
+#include <sys/vnode.h>
+
+#include <dev/cons.h>
+
+extern struct consdev constab[];
+
+extern struct	consdev *cn_tab;	/* physical console device info */
+
+void
+cninit()
+{
+	register struct consdev *cp;
+
+	/*
+	 * Collect information about all possible consoles
+	 * and find the one with highest priority
+	 */
+	for (cp = constab; cp->cn_probe; cp++) {
+		(*cp->cn_probe)(cp);
+		if (cp->cn_pri > CN_DEAD &&
+		    (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri))
+			cn_tab = cp;
+	}
+	/*
+	 * No console, we can handle it
+	 */
+	if ((cp = cn_tab) == NULL)
+		return;
+	/*
+	 * Turn on console
+	 */
+	(*cp->cn_init)(cp);
+}