/* $NetBSD: x68k.c,v 1.5 2019/05/07 04:35:31 thorpej Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn of Wasabi Systems.
*
* 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.
*/
#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif
#include <sys/cdefs.h>
#if !defined(__lint)
__RCSID("$NetBSD: x68k.c,v 1.5 2019/05/07 04:35:31 thorpej Exp $");
#endif /* !__lint */
#include <sys/param.h>
#include <sys/stat.h>
#include <assert.h>
#include <err.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "installboot.h"
#define X68K_LABELOFFSET 64
#define X68K_LABELSIZE 404 /* reserve 16 partitions */
static int x68k_clearheader(ib_params *, struct bbinfo_params *, uint8_t *);
static int x68k_clearboot(ib_params *);
static int x68k_setboot(ib_params *);
struct ib_mach ib_mach_x68k = {
.name = "x68k",
.setboot = x68k_setboot,
.clearboot = x68k_clearboot,
.editboot = no_editboot,
.valid_flags = IB_STAGE1START | IB_STAGE2START,
};
static struct bbinfo_params bbparams = {
X68K_BBINFO_MAGIC,
X68K_BOOT_BLOCK_OFFSET,
X68K_BOOT_BLOCK_BLOCKSIZE,
X68K_BOOT_BLOCK_MAX_SIZE,
X68K_LABELOFFSET + X68K_LABELSIZE, /* XXX */
BBINFO_BIG_ENDIAN,
};
static int
x68k_clearboot(ib_params *params)
{
assert(params != NULL);
if (params->flags & IB_STAGE1START) {
warnx("`-b bno' is not supported for %s",
params->machine->name);
return 0;
}
return shared_bbinfo_clearboot(params, &bbparams, x68k_clearheader);
}
static int
x68k_clearheader(ib_params *params, struct bbinfo_params *bb_params,
uint8_t *bb)
{
assert(params != NULL);
assert(bb_params != NULL);
assert(bb != NULL);
memset(bb, 0, X68K_LABELOFFSET);
return 1;
}
static int
x68k_setboot(ib_params *params)
{
struct stat bootstrapsb;
char bb[X68K_BOOT_BLOCK_MAX_SIZE];
char label[X68K_LABELSIZE];
uint32_t s1start;
int retval;
ssize_t rv;
assert(params != NULL);
assert(params->fsfd != -1);
assert(params->filesystem != NULL);
assert(params->s1fd != -1);
assert(params->stage1 != NULL);
retval = 0;
if (params->flags & IB_STAGE1START)
s1start = params->s1start;
else
s1start = X68K_BOOT_BLOCK_OFFSET /
X68K_BOOT_BLOCK_BLOCKSIZE;
/* read disklabel on the target disk */
rv = pread(params->fsfd, label, sizeof label,
s1start * X68K_BOOT_BLOCK_BLOCKSIZE + X68K_LABELOFFSET);
if (rv == -1) {
warn("Reading `%s'", params->filesystem);
goto done;
} else if (rv != sizeof label) {
warnx("Reading `%s': short read", params->filesystem);
goto done;
}
if (fstat(params->s1fd, &bootstrapsb) == -1) {
warn("Examining `%s'", params->stage1);
goto done;
}
if (!S_ISREG(bootstrapsb.st_mode)) {
warnx("`%s' must be a regular file", params->stage1);
goto done;
}
/* read boot loader */
memset(&bb, 0, sizeof bb);
rv = read(params->s1fd, &bb, sizeof bb);
if (rv == -1) {
warn("Reading `%s'", params->stage1);
goto done;
}
/* then, overwrite disklabel */
memcpy(&bb[X68K_LABELOFFSET], &label, sizeof label);
if (params->flags & IB_VERBOSE) {
printf("Bootstrap start sector: %#x\n", s1start);
printf("Bootstrap byte count: %#x\n", (unsigned)rv);
printf("%sriting bootstrap\n",
(params->flags & IB_NOWRITE) ? "Not w" : "W");
}
if (params->flags & IB_NOWRITE) {
retval = 1;
goto done;
}
/* write boot loader and disklabel into the target disk */
rv = pwrite(params->fsfd, &bb, X68K_BOOT_BLOCK_MAX_SIZE,
s1start * X68K_BOOT_BLOCK_BLOCKSIZE);
if (rv == -1) {
warn("Writing `%s'", params->filesystem);
goto done;
} else if (rv != X68K_BOOT_BLOCK_MAX_SIZE) {
warnx("Writing `%s': short write", params->filesystem);
goto done;
} else
retval = 1;
done:
return (retval);
}
