-/* $OpenBSD: bioskbd.S,v 1.4 1997/04/09 08:39:23 mickey Exp $ */
+/* $OpenBSD: bioskbd.S,v 1.5 1997/04/21 19:47:32 mickey Exp $ */
/*
- * Ported to boot 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
+ * Copyright (c) 1997 Michael Shalayeff
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Michael Shalayeff.
+ * 4. 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 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.
*
- * Mach Operating System
- * Copyright (c) 1992, 1991 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
*/
-/*
- Copyright 1988, 1989, 1990, 1991, 1992
- by Intel Corporation, Santa Clara, California.
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and
-its documentation for any purpose and without fee is hereby
-granted, provided that the above copyright notice appears in all
-copies and that both the copyright notice and this permission notice
-appear in supporting documentation, and that the name of Intel
-not be used in advertising or publicity pertaining to distribution
-of the software without specific, written prior permission.
-
-INTEL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
-INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
-IN NO EVENT SHALL INTEL BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
-CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
-NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
#include <machine/asm.h>
#define _LOCORE
+#include <dev/isa/isareg.h>
+#include <dev/ic/mc146818reg.h>
+#include <i386/isa/nvram.h>
#include "biosdev.h"
#undef _LOCORE
*
*/
ENTRY(kbd_probe)
-#if 0
-#include <machine/console.h>
-#include <machine/cpufunc.h>
-#include "boot.h"
-
-int
-probe_keyboard(void)
-{
- int i, retries = 5;
- unsigned char val;
-
- /* flush any noise in the buffer */
- while (inb(KB_STAT) & KB_BUF_FULL) {
- delay1ms();
- (void) inb(KB_DATA);
- }
-
- /* Try to reset keyboard hardware */
- again:
- while (--retries) {
-#ifdef DEBUG
- printf("%d ", retries);
-#endif
- while ((inb(KB_STAT) & KB_READY) == KB_READY) delay1ms();
- outb(KB_DATA, KB_RESET);
- for (i=0; i<1000; i++) {
- delay1ms();
- val = inb(KB_DATA);
- if (val == KB_ACK || val == KB_ECHO)
- goto gotack;
- if (val == KB_RESEND)
- break;
- }
- }
-gotres:
-#ifdef DEBUG
- printf("gotres\n");
-#endif
- if (!retries) {
-#ifdef DEBUG
- printf("gave up\n");
-#endif
- return(1);
- }
-gotack:
- delay1ms();
- while ((inb(KB_STAT) & KB_BUF_FULL) == 0) delay1ms();
- delay1ms();
-#ifdef DEBUG
- printf("ACK ");
-#endif
- val = inb(KB_DATA);
- if (val == KB_ACK)
- goto gotack;
- if (val == KB_RESEND)
- goto again;
- if (val != KB_RESET_DONE) {
-#ifdef DEBUG
- printf("stray val %d\n", val);
-#endif
- return(0);
- }
-#ifdef DEBUG
- printf("ok\n");
-#endif
- return(0);
-}
-
-#endif
- movl 1, %eax /* present (: */
+ movb $NVRAM_EQUIPMENT, %al
+ outb %al, $IO_RTC
+ inb $(IO_RTC+1), %al
+ xorl %edx, %edx
+ andb $(NVRAM_EQUIPMENT_KBD|NVRAM_EQUIPMENT_DISPLAY), %al
+ cmpb $(NVRAM_EQUIPMENT_KBD|NVRAM_EQUIPMENT_DISPLAY), %al
+ je 1f
+ incl %edx
+1: movl %edx, %eax
ret
/*
-# BIOS call "INT 10H Function 0Eh" to write character to console
-# Call with %ah = 0x0e
-# %al = character
-# %bh = page
-# %bl = foreground color
-*/
+ * void kbd_putc(int c)
+ * output byte to console
+ */
ENTRY(kbd_putc)
pushl %ebx
xorl %ebx, %ebx
incl %ebx
BIOSINT(0x10) # display a byte
-
popl %ebx
ret
-
/*
-# BIOS call "INT 16H Function 00H" to read character from the keyboard
-# Call with %ah = 0x00
-# Return: %ah = keyboard scan code
-# %al = ASCII character
-*/
+ * int kbd_getc(void)
+ * read character from keyboard
+ */
ENTRY(kbd_getc)
- xorl %eax, %eax
+ movb $0, %ah
BIOSINT(0x16)
movzbl %al, %eax
ret
-
/*
-# BIOS call "INT 16H Function 01H" to check whether a character is pending
-# Call with %ah = 0x01
-# Return:
-# If key waiting to be input:
-# %ah = keyboard scan code
-# %al = ASCII character
-# ZF = clear
-# else
-# ZF = set
-*/
+ * int kbd_ischar(void)
+ * check if there is character available from keyboard
+ */
ENTRY(kbd_ischar)
- movb $0x01, %ah
+ movb $1, %ah
BIOSINT(0x16)
setnz %al
movzbl %al, %eax
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