69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/* $NetBSD: booted_dev.c,v 1.3 1999/11/13 21:38:20 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1999 Christopher G. Demetriou. 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 Christopher G. Demetriou
|
|
* for the NetBSD Project.
|
|
* 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 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 <lib/libsa/stand.h>
|
|
#include <lib/libkern/libkern.h>
|
|
|
|
#include <machine/prom.h>
|
|
#include "common.h"
|
|
|
|
long booted_dev_fd;
|
|
#if defined(PRIMARY_BOOTBLOCK) || defined(UNIFIED_BOOTBLOCK)
|
|
char booted_dev_name[BOOTED_DEV_MAXNAMELEN];
|
|
#endif /* defined(PRIMARY_BOOTBLOCK) || defined(UNIFIED_BOOTBLOCK) */
|
|
|
|
#if defined(PRIMARY_BOOTBLOCK) || defined(UNIFIED_BOOTBLOCK)
|
|
int
|
|
booted_dev_open(void)
|
|
{
|
|
prom_return_t ret;
|
|
int devlen;
|
|
|
|
/*
|
|
* XXX
|
|
* We don't know what device names look like yet,
|
|
* so we can't change them.
|
|
*/
|
|
ret.bits = prom_getenv(PROM_E_BOOTED_DEV, booted_dev_name,
|
|
sizeof(booted_dev_name));
|
|
devlen = ret.u.retval;
|
|
|
|
ret.bits = prom_open(booted_dev_name, devlen);
|
|
|
|
if (ret.u.status)
|
|
return 0;
|
|
booted_dev_fd = ret.u.retval;
|
|
|
|
return 1;
|
|
}
|
|
#endif
|