108 lines
2.1 KiB
C
108 lines
2.1 KiB
C
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/* $Id$ */
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/* $NetBSD: prom.c,v 1.3 1997/09/06 14:03:58 drochner Exp $ */
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/*
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* Mach Operating System
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* Copyright (c) 1992 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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#include <sys/types.h>
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#include "bootstrap.h"
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#include "arctypes.h"
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#include "arcfuncs.h"
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int console;
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static void arc_probe(struct console *cp);
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static int arc_init(int);
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static void arc_putchar(int);
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static int arc_getchar(void);
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static int arc_poll(void);
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struct console arcconsole = {
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"arc",
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"ARC firmware console",
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0,
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arc_probe,
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arc_init,
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arc_putchar,
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arc_getchar,
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arc_poll,
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};
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static void
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arc_probe(struct console *cp)
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{
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cp->c_flags |= C_PRESENTIN|C_PRESENTOUT;
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}
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static int
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arc_init(int arg)
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{
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return 0;
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}
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static void
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arc_putchar(int c)
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{
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char cbuf = c;
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u_int32_t count;
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Write(StandardOut, &cbuf, 1, &count);
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}
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static int saved_char = -1;
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int
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arc_getchar()
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{
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char cbuf;
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u_int32_t count;
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arc_putchar('_');
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arc_putchar('\b');
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Read(StandardIn, &cbuf, 1, &count);
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arc_putchar(' ');
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arc_putchar('\b');
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if (count == 1)
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return cbuf;
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else
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return -1;
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}
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int
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arc_poll()
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{
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return GetReadStatus(StandardIn) == ESUCCESS;
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}
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int
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arc_open(dev, len)
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char *dev;
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int len;
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{
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return 0;
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}
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