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/*-
* Copyright (c) 2014 Juniper Networks, Inc.
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/diskpc98.h>
#include <sys/endian.h>
#include <sys/errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "image.h"
#include "mkimg.h"
#include "scheme.h"
#ifndef PC98_MAGIC
#define PC98_MAGIC 0xaa55
#endif
#ifndef PC98_MAGICOFS
#define PC98_MAGICOFS 510
#endif
#ifndef PC98_NPARTS
#define PC98_NPARTS 16
#endif
#ifndef PC98_PTYP_386BSD
#define PC98_PTYP_386BSD 0xc494
#endif
#define PC98_BOOTCODESZ 8192
static struct mkimg_alias pc98_aliases[] = {
{ ALIAS_FREEBSD, ALIAS_INT2TYPE(PC98_PTYP_386BSD) },
{ ALIAS_NONE, 0 }
};
static lba_t
pc98_metadata(u_int where, lba_t blk)
{
if (where == SCHEME_META_IMG_START)
blk += PC98_BOOTCODESZ / secsz;
return (round_track(blk));
}
static void
pc98_chs(u_short *cylp, u_char *hdp, u_char *secp, lba_t lba)
{
u_int cyl, hd, sec;
mkimg_chs(lba, 0xffff, &cyl, &hd, &sec);
le16enc(cylp, cyl);
*hdp = hd;
*secp = sec;
}
static int
pc98_write(lba_t imgsz __unused, void *bootcode)
{
struct part *part;
struct pc98_partition *dpbase, *dp;
u_char *buf;
lba_t size;
int error, ptyp;
buf = malloc(PC98_BOOTCODESZ);
if (buf == NULL)
return (ENOMEM);
if (bootcode != NULL) {
memcpy(buf, bootcode, PC98_BOOTCODESZ);
memset(buf + secsz, 0, secsz);
} else
memset(buf, 0, PC98_BOOTCODESZ);
le16enc(buf + PC98_MAGICOFS, PC98_MAGIC);
dpbase = (void *)(buf + secsz);
STAILQ_FOREACH(part, &partlist, link) {
size = round_track(part->size);
dp = dpbase + part->index;
ptyp = ALIAS_TYPE2INT(part->type);
dp->dp_mid = ptyp;
dp->dp_sid = ptyp >> 8;
pc98_chs(&dp->dp_scyl, &dp->dp_shd, &dp->dp_ssect,
part->block);
pc98_chs(&dp->dp_scyl, &dp->dp_shd, &dp->dp_ssect,
part->block + size - 1);
if (part->label != NULL)
memcpy(dp->dp_name, part->label, strlen(part->label));
}
error = image_write(0, buf, PC98_BOOTCODESZ / secsz);
free(buf);
return (error);
}
static struct mkimg_scheme pc98_scheme = {
.name = "pc98",
.description = "PC-9800 disk partitions",
.aliases = pc98_aliases,
.metadata = pc98_metadata,
.write = pc98_write,
.bootcode = PC98_BOOTCODESZ,
.labellen = 16,
.nparts = PC98_NPARTS,
.maxsecsz = 512
};
SCHEME_DEFINE(pc98_scheme);
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