mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-11-30 00:02:44 +00:00
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.
62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
/*-
|
|
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
|
|
#include <stand.h>
|
|
#include <string.h>
|
|
|
|
#include "bootstrap.h"
|
|
|
|
int
|
|
devopen(struct open_file *f, const char *fname, char **file)
|
|
{
|
|
struct devdesc *dev;
|
|
int result;
|
|
|
|
if ((result = archsw.arch_getdev((void *)&dev, fname, file)) == 0) { /* get the device */
|
|
/* point to device-specific data so that device open can use it */
|
|
f->f_devdata = dev;
|
|
if ((result = dev->d_dev->dv_open(f, dev)) == 0) { /* try to open it */
|
|
/* reference the devsw entry from the open_file structure */
|
|
f->f_dev = dev->d_dev;
|
|
} else {
|
|
free(dev); /* release the device descriptor */
|
|
}
|
|
}
|
|
return(result);
|
|
}
|
|
|
|
int
|
|
devclose(struct open_file *f)
|
|
{
|
|
if (f->f_devdata != NULL) {
|
|
free(f->f_devdata);
|
|
}
|
|
return(0);
|
|
}
|