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Same as sys/dev/md_root.c.

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soren 2000-11-21 00:18:03 +00:00
parent 0bb338521a
commit 1bbc3bd9b5
1 changed files with 0 additions and 85 deletions
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85
sys/arch/sgimips/sgimips/md_root.c
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/* $NetBSD: md_root.c,v 1.1 2000/06/14 16:02:48 soren Exp $ */
/*
* Copyright (c) 1996 Christopher G. Demetriou. All rights reserved.
* Copyright (c) 1995 Gordon W. Ross
* 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. 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 AUTHOR 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.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/reboot.h>
#include <dev/md.h>
#include "opt_mdsize.h"
extern int boothowto;
#ifndef MINIROOTSIZE
#define MINIROOTSIZE 512
#endif
#define ROOTBYTES (MINIROOTSIZE << DEV_BSHIFT)
/*
* This array will be patched to contain a file-system image.
*/
u_int32_t md_root_size = ROOTBYTES;
char md_root_image[ROOTBYTES] = "|This is the root ramdisk!\n";
/*
* This is called during autoconfig.
*/
void
md_attach_hook(unit, md)
int unit;
struct md_conf *md;
{
if (unit == 0) {
/* Setup root ramdisk */
md->md_addr = (caddr_t)md_root_image;
md->md_size = (size_t)md_root_size;
md->md_type = MD_KMEM_FIXED;
printf("md%d: internal %dK image area\n", unit,
ROOTBYTES / 1024);
}
}
/*
* This is called during open (i.e. mountroot)
*/
void
md_open_hook(unit, md)
int unit;
struct md_conf *md;
{
if (unit == 0) {
/* The root ramdisk only works single-user. */
boothowto |= RB_SINGLE;
}
}