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/* $NetBSD: booted_dev.c,v 1.4 2016/10/13 16:18:20 flxd 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.
*/
devlen = prom_getenv(PROM_E_BOOTED_DEV, booted_dev_name,
sizeof(booted_dev_name));
ret.bits = prom_open(booted_dev_name, devlen);
if (ret.u.status)
return 0;
booted_dev_fd = ret.u.retval;
return 1;
}
#endif
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