94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
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/* $NetBSD: uart.c,v 1.2 2007/03/23 20:05:47 dogcow Exp $ */
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/*-
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* Copyright (c) 2007 Ruslan Ermilov and Vsevolod Lobko.
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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
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* without modification, are permitted provided that the following
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* conditions 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
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/time.h>
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#include <sys/cons.h>
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#include <sys/consio.h>
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static cn_probe_t uart_cnprobe;
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static cn_init_t uart_cninit;
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static cn_term_t uart_cnterm;
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static cn_getc_t uart_cngetc;
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static cn_putc_t uart_cnputc;
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static void
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uart_cnprobe(struct consdev *cp)
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{
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sprintf(cp->cn_name, "uart");
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cp->cn_pri = CN_NORMAL;
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}
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static void
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uart_cninit(struct consdev *cp)
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{
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}
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void
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uart_cnputc(struct consdev *cp, int c)
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{
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char chr;
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chr = c;
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while ((*((volatile unsigned long *)0xb2600018)) & 0x20) ;
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(*((volatile unsigned long *)0xb2600000)) = c;
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while ((*((volatile unsigned long *)0xb2600018)) & 0x20) ;
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}
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int
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uart_cngetc(struct consdev * cp)
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{
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while ((*((volatile unsigned long *)0xb2600018)) & 0x10) ;
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return (*((volatile unsigned long *)0xb2600000)) & 0xff;
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}
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static void
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uart_cnterm(struct consdev * cp)
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{
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}
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CONSOLE_DRIVER(uart);
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