222 lines
6.2 KiB
C
222 lines
6.2 KiB
C
/* $NetBSD: hppa.c,v 1.1 2014/02/24 07:23:44 skrll Exp $ */
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/*-
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* Copyright (c) 2002 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Luke Mewburn of Wasabi Systems.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#if HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#endif
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#include <sys/cdefs.h>
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#if !defined(__lint)
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__RCSID("$NetBSD: hppa.c,v 1.1 2014/02/24 07:23:44 skrll Exp $");
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#endif /* !__lint */
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/* We need the target disklabel.h, not the hosts one..... */
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#ifdef HAVE_NBTOOL_CONFIG_H
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#include "nbtool_config.h"
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#include <nbinclude/sys/disklabel.h>
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#else
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#include <sys/disklabel.h>
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#endif
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <assert.h>
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#include <err.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "installboot.h"
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#define HPPA_LABELOFFSET 512
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#define HPPA_LABELSIZE 404 /* reserve 16 partitions */
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#define HPPA_BOOT_BLOCK_SIZE 8192
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static int hppa_clearboot(ib_params *);
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static int hppa_setboot(ib_params *);
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struct ib_mach ib_mach_hppa =
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{ "hppa", hppa_setboot, hppa_clearboot, no_editboot, 0};
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static int
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hppa_clearboot(ib_params *params)
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{
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char bb[HPPA_BOOT_BLOCK_SIZE];
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int retval, eol;
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ssize_t rv;
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assert(params != NULL);
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assert(params->fsfd != -1);
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assert(params->filesystem != NULL);
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retval = 0;
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/* read disklabel on the target disk */
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rv = pread(params->fsfd, bb, sizeof bb, 0);
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if (rv == -1) {
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warn("Reading `%s'", params->filesystem);
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goto done;
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} else if (rv != sizeof bb) {
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warnx("Reading `%s': short read", params->filesystem);
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goto done;
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}
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/* clear header */
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memset(bb, 0, HPPA_LABELOFFSET);
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eol = HPPA_LABELOFFSET + HPPA_LABELSIZE;
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memset(&bb[eol], 0, sizeof bb - eol);
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if (params->flags & IB_VERBOSE) {
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printf("%slearing bootstrap\n",
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(params->flags & IB_NOWRITE) ? "Not c" : "C");
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}
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if (params->flags & IB_NOWRITE) {
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retval = 1;
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goto done;
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}
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rv = pwrite(params->fsfd, bb, sizeof bb, 0);
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if (rv == -1) {
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warn("Writing `%s'", params->filesystem);
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goto done;
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} else if (rv != HPPA_BOOT_BLOCK_SIZE) {
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warnx("Writing `%s': short write", params->filesystem);
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goto done;
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} else
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retval = 1;
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done:
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return (retval);
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}
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static int
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hppa_setboot(ib_params *params)
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{
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struct stat bootstrapsb;
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char bb[HPPA_BOOT_BLOCK_SIZE];
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struct {
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char l_off[HPPA_LABELOFFSET];
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struct disklabel l;
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char l_pad[HPPA_BOOT_BLOCK_SIZE
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- HPPA_LABELOFFSET - sizeof(struct disklabel)];
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} label;
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unsigned int secsize, npart;
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int retval;
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ssize_t rv;
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assert(params != NULL);
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assert(params->fsfd != -1);
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assert(params->filesystem != NULL);
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assert(params->s1fd != -1);
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assert(params->stage1 != NULL);
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retval = 0;
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/* read disklabel on the target disk */
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rv = pread(params->fsfd, &label, HPPA_BOOT_BLOCK_SIZE, 0);
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if (rv == -1) {
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warn("Reading `%s'", params->filesystem);
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goto done;
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} else if (rv != HPPA_BOOT_BLOCK_SIZE) {
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warnx("Reading `%s': short read", params->filesystem);
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goto done;
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}
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if (fstat(params->s1fd, &bootstrapsb) == -1) {
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warn("Examining `%s'", params->stage1);
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goto done;
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}
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if (!S_ISREG(bootstrapsb.st_mode)) {
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warnx("`%s' must be a regular file", params->stage1);
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goto done;
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}
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/* check if valid disklabel exists */
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secsize = be32toh(label.l.d_secsize);
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npart = be16toh(label.l.d_npartitions);
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if (label.l.d_magic != htobe32(DISKMAGIC) ||
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label.l.d_magic2 != htobe32(DISKMAGIC) ||
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secsize == 0 || secsize & (secsize - 1) ||
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npart > MAXMAXPARTITIONS) {
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warnx("No disklabel in `%s'", params->filesystem);
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/* then check if boot partition exists */
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} else if (npart < 1 || label.l.d_partitions[0].p_size == 0) {
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warnx("Partition `a' doesn't exist in %s", params->filesystem);
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/* check if the boot partition is below 2GB */
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} else if (be32toh(label.l.d_partitions[0].p_offset) +
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be32toh(label.l.d_partitions[0].p_size) >
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((unsigned)2*1024*1024*1024) / secsize) {
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warnx("Partition `a' of `%s' exceeds 2GB boundary.",
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params->filesystem);
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warnx("It won't boot since hppa PDC can handle only 2GB.");
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goto done;
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}
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/* read boot loader */
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memset(&bb, 0, sizeof bb);
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rv = read(params->s1fd, &bb, sizeof bb);
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if (rv == -1) {
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warn("Reading `%s'", params->stage1);
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goto done;
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}
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/* then, overwrite disklabel */
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memcpy(&bb[HPPA_LABELOFFSET], &label.l, HPPA_LABELSIZE);
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if (params->flags & IB_VERBOSE) {
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printf("Bootstrap start sector: %#x\n", 0);
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printf("Bootstrap byte count: %#zx\n", rv);
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printf("%sriting bootstrap\n",
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(params->flags & IB_NOWRITE) ? "Not w" : "W");
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}
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if (params->flags & IB_NOWRITE) {
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retval = 1;
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goto done;
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}
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/* write boot loader and disklabel into the target disk */
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rv = pwrite(params->fsfd, &bb, HPPA_BOOT_BLOCK_SIZE, 0);
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if (rv == -1) {
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warn("Writing `%s'", params->filesystem);
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goto done;
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} else if (rv != HPPA_BOOT_BLOCK_SIZE) {
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warnx("Writing `%s': short write", params->filesystem);
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goto done;
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} else
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retval = 1;
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done:
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return (retval);
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}
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