c2f9d95de5
'three-stage' bootstrap. There are a number of caveats with the code in its current state: - The i386 bootstrap only supports booting from a floppy. - The kernel and kld do not yet know how to deal with the extended information and module summary passed in. - PnP-based autodetection and demand loading of modules is not implemented. - i386 ELF kernel loading is not ready yet. - The i386 bootstrap is loaded via an ugly blockmap. On the alpha, both net- and disk-booting (SRM console machines only) is supported. No blockmaps are used by this code. Obtained from: Parts from the NetBSD/i386 standalone bootstrap.
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
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* Copyright (c) 1998 Michael Smith (msmith@freebsd.org)
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, 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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* From Id: probe_keyboard.c,v 1.13 1997/06/09 05:10:55 bde Exp
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*
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* $Id$
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*/
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#include <stand.h>
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#include "bootstrap.h"
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/* in comconsole.S */
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extern void cominit(int s);
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extern void computc(int c);
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extern int comgetc(void);
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extern int comiskey(void);
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static void comc_probe(struct console *cp);
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static int comc_init(int arg);
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static int comc_in(void);
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struct console comconsole = {
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"comconsole",
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"BIOS serial port",
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0,
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comc_probe,
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comc_init,
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computc,
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comc_in,
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comiskey
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};
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static void
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comc_probe(struct console *cp)
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{
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/* XXX check the BIOS equipment list? */
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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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comc_init(int arg)
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{
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/* XXX arg is unit number, should we use variables instead? */
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cominit(arg);
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return(0);
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}
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static int
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comc_in(void)
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{
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if (comiskey()) {
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return(comgetc());
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} else {
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return(-1);
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}
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}
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