100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/* $NetBSD: md_hooks.c,v 1.6 1996/04/26 21:00:31 mark Exp $ */
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/*
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* Copyright (c) 1995 Gordon W. Ross
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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 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/reboot.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <vm/vm.h>
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#include <vm/vm_map.h>
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#include <vm/vm_kern.h>
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#include <dev/ramdisk.h>
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#ifndef RAMDISK_SIZE
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#define RAMDISK_SIZE 0
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#endif
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/*extern int boothowto;*/
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extern u_int ramdisc_size;
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struct rd_conf *bootrd = NULL;
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int load_ramdisc_from_floppy __P((struct rd_conf *rd, dev_t dev));
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/*
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* This is called during autoconfig.
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*/
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int
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rd_match_hook(parent, self, aux)
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struct device *parent;
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void *self;
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void *aux;
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{
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return (1);
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}
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void
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rd_attach_hook(unit, rd)
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int unit;
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struct rd_conf *rd;
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{
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if (unit == 0) {
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if (ramdisc_size == 0 && RAMDISK_SIZE)
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ramdisc_size = (RAMDISK_SIZE * 1024);
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if (ramdisc_size != 0) {
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rd->rd_size = round_page(ramdisc_size);
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rd->rd_addr = (caddr_t)kmem_alloc(kernel_map, ramdisc_size);
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rd->rd_type = RD_KMEM_FIXED;
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bootrd = rd;
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}
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}
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printf("rd%d: allocated %dK (%d blocks)\n", unit, rd->rd_size / 1024, rd->rd_size / DEV_BSIZE);
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}
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/*
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* This is called during open (i.e. mountroot)
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*/
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void
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rd_open_hook(unit, rd)
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int unit;
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struct rd_conf *rd;
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{
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/* I use the ramdisc for other testing ... */
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#if 0
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if (unit == 0) {
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/* The root ramdisk only works single-user. */
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boothowto |= RB_SINGLE;
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}
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#endif
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}
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