NetBSD-5.0.2/usr.sbin/installboot/arch/hp700.c
/* $NetBSD: hp700.c,v 1.4 2008/04/28 20:24:16 martin 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: hp700.c,v 1.4 2008/04/28 20:24:16 martin Exp $");
#endif /* !__lint */
/* We need the target disklabel.h, not the hosts one..... */
#ifdef HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#include <nbinclude/sys/disklabel.h>
#else
#include <sys/disklabel.h>
#endif
#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 HP700_LABELOFFSET 512
#define HP700_LABELSIZE 404 /* reserve 16 partitions */
#define HP700_BOOT_BLOCK_SIZE 8192
static int hp700_clearboot(ib_params *);
static int hp700_setboot(ib_params *);
struct ib_mach ib_mach_hp700 =
{ "hp700", hp700_setboot, hp700_clearboot, no_editboot, 0};
static int
hp700_clearboot(ib_params *params)
{
char bb[HP700_BOOT_BLOCK_SIZE];
int retval, eol;
ssize_t rv;
assert(params != NULL);
assert(params->fsfd != -1);
assert(params->filesystem != NULL);
retval = 0;
/* read disklabel on the target disk */
rv = pread(params->fsfd, bb, sizeof bb, 0);
if (rv == -1) {
warn("Reading `%s'", params->filesystem);
goto done;
} else if (rv != sizeof bb) {
warnx("Reading `%s': short read", params->filesystem);
goto done;
}
/* clear header */
memset(bb, 0, HP700_LABELOFFSET);
eol = HP700_LABELOFFSET + HP700_LABELSIZE;
memset(&bb[eol], 0, sizeof bb - eol);
if (params->flags & IB_VERBOSE) {
printf("%slearing bootstrap\n",
(params->flags & IB_NOWRITE) ? "Not c" : "C");
}
if (params->flags & IB_NOWRITE) {
retval = 1;
goto done;
}
rv = pwrite(params->fsfd, bb, sizeof bb, 0);
if (rv == -1) {
warn("Writing `%s'", params->filesystem);
goto done;
} else if (rv != HP700_BOOT_BLOCK_SIZE) {
warnx("Writing `%s': short write", params->filesystem);
goto done;
} else
retval = 1;
done:
return (retval);
}
static int
hp700_setboot(ib_params *params)
{
struct stat bootstrapsb;
char bb[HP700_BOOT_BLOCK_SIZE];
struct {
char l_off[HP700_LABELOFFSET];
struct disklabel l;
char l_pad[HP700_BOOT_BLOCK_SIZE
- HP700_LABELOFFSET - sizeof(struct disklabel)];
} label;
unsigned int secsize, npart;
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;
/* read disklabel on the target disk */
rv = pread(params->fsfd, &label, HP700_BOOT_BLOCK_SIZE, 0);
if (rv == -1) {
warn("Reading `%s'", params->filesystem);
goto done;
} else if (rv != HP700_BOOT_BLOCK_SIZE) {
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;
}
/* check if valid disklabel exists */
secsize = be32toh(label.l.d_secsize);
npart = be16toh(label.l.d_npartitions);
if (label.l.d_magic != htobe32(DISKMAGIC) ||
label.l.d_magic2 != htobe32(DISKMAGIC) ||
secsize == 0 || secsize & (secsize - 1) ||
npart > MAXMAXPARTITIONS) {
warnx("No disklabel in `%s'", params->filesystem);
/* then check if boot partition exists */
} else if (npart < 1 || label.l.d_partitions[0].p_size == 0) {
warnx("Partition `a' doesn't exist in %s", params->filesystem);
/* check if the boot partition is below 2GB */
} else if (be32toh(label.l.d_partitions[0].p_offset) +
be32toh(label.l.d_partitions[0].p_size) >
((unsigned)2*1024*1024*1024) / secsize) {
warnx("WARNING: Partition `a' of `%s' exceeds 2GB boundary.",
params->filesystem);
warnx("WARNING: It won't boot since hp700 PDC can handle only 2GB.");
}
/* 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[HP700_LABELOFFSET], &label.l, HP700_LABELSIZE);
if (params->flags & IB_VERBOSE) {
printf("Bootstrap start sector: %#x\n", 0);
printf("Bootstrap byte count: %#zx\n", 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, HP700_BOOT_BLOCK_SIZE, 0);
if (rv == -1) {
warn("Writing `%s'", params->filesystem);
goto done;
} else if (rv != HP700_BOOT_BLOCK_SIZE) {
warnx("Writing `%s': short write", params->filesystem);
goto done;
} else
retval = 1;
done:
return (retval);
}