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/* $OpenBSD: boot1.c,v 1.4 2010/12/06 22:11:01 jasper Exp $ */
/* $NetBSD: boot1.c,v 1.1 2006/09/01 21:26:19 uwe Exp $ */
/*-
* Copyright (c) 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by David Laight.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
#include <sys/param.h>
#include <lib/libsa/stand.h>
#include <lib/libsa/ufs.h>
#include <sys/disklabel.h>
#define XSTR(x) #x
#define STR(x) XSTR(x)
static uint32_t bios_sector;
const char *boot1(uint32_t *);
void putstr(const char *str);
int raise(int sig);
int blkdevstrategy(void *, int, daddr_t, size_t, void *, size_t *);
int blkdevopen(struct open_file *, ...);
int blkdevclose(struct open_file *);
extern struct disklabel ptn_disklabel;
struct fs_ops file_system[] = {
{ ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek,
ufs_stat, ufs_readdir },
};
int nfsys = NENTS(file_system);
struct devsw devsw[] = {
{ "dk", blkdevstrategy, blkdevopen, blkdevclose, noioctl },
};
int ndevs = NENTS(devsw);
const char *
boot1(uint32_t *sector)
{
struct stat sb;
int fd;
bios_sector = *sector;
putstr("\r\nOpenBSD/" MACHINE " Primary Bootstrap\r\n");
do {
/*
* Nothing at the start of the MBR partition, fallback on
* partition 'a' from the disklabel in this MBR partition.
*/
if (ptn_disklabel.d_magic != DISKMAGIC)
break;
if (ptn_disklabel.d_magic2 != DISKMAGIC)
break;
if (ptn_disklabel.d_partitions[0].p_fstype == FS_UNUSED)
break;
bios_sector = ptn_disklabel.d_partitions[0].p_offset;
*sector = bios_sector;
fd = open("boot", 0);
} while (0);
if (fd == -1 || fstat(fd, &sb) == -1)
return "Can't open /boot.\r\n";
#if 0
if (sb.st_size > SECONDARY_MAX_LOAD)
return "/boot too large.\r\n";
#endif
if (read(fd, (void *)LOADADDRESS, sb.st_size) != sb.st_size)
return "/boot load failed.\r\n";
if (*(uint32_t *)(LOADADDRESS + 4) != 0x20041110)
return "Invalid /boot file format.\r\n";
return 0;
}
int
blkdevopen(struct open_file *f, ...)
{
return 0;
}
int
blkdevclose(struct open_file *f)
{
return 0;
}
int
blkdevstrategy(void *devdata, int flag, daddr_t dblk, size_t size, void *buf, size_t *rsize)
{
if (flag != F_READ)
return EROFS;
if (size & (DEV_BSIZE - 1))
return EINVAL;
if (rsize)
*rsize = size;
if (size != 0 && readsects(0x40, bios_sector + dblk, buf,
size / DEV_BSIZE) != 0)
return EIO;
return 0;
}
/* ARGUSED */
int
raise(int sig)
{
return 0;
}
void
twiddle(void)
{
static int pos;
putchar("|/-\\"[pos++ & 3]);
putchar('\b');
}
int
devopen(struct open_file *f, const char *fname, char **file)
{
*file = (char *)fname;
f->f_flags |= F_NODEV;
f->f_dev = &devsw[0];
return (0);
}
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