minix/usr.sbin/installboot/arch/macppc.c
2012-02-09 18:48:13 +01:00

186 lines
5.5 KiB
C

/* $NetBSD: macppc.c,v 1.11 2008/05/24 19:15:21 tsutsui 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.
*
* 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: macppc.c,v 1.11 2008/05/24 19:15:21 tsutsui Exp $");
#endif /* !__lint */
#include <sys/param.h>
#ifndef HAVE_NBTOOL_CONFIG_H
#include <sys/ioctl.h>
#include <sys/dkio.h>
#include <errno.h>
#endif
#include <assert.h>
#include <err.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "installboot.h"
static struct bbinfo_params bbparams = {
MACPPC_BBINFO_MAGIC,
MACPPC_BOOT_BLOCK_OFFSET,
MACPPC_BOOT_BLOCK_BLOCKSIZE,
MACPPC_BOOT_BLOCK_MAX_SIZE,
0,
BBINFO_BIG_ENDIAN,
};
static int writeapplepartmap(ib_params *, struct bbinfo_params *, uint8_t *);
static int macppc_clearboot(ib_params *);
static int macppc_setboot(ib_params *);
struct ib_mach ib_mach_macppc =
{ "macppc", macppc_setboot, macppc_clearboot, no_editboot,
IB_STAGE2START };
static int
macppc_clearboot(ib_params *params)
{
assert(params != NULL);
/* XXX: maybe clear the apple partition map too? */
return (shared_bbinfo_clearboot(params, &bbparams, NULL));
}
static int
macppc_setboot(ib_params *params)
{
assert(params != NULL);
return (shared_bbinfo_setboot(params, &bbparams, writeapplepartmap));
}
static int
writeapplepartmap(ib_params *params, struct bbinfo_params *bb_params,
uint8_t *bb)
{
struct apple_drvr_map dm;
struct apple_part_map_entry pme;
int rv;
assert (params != NULL);
assert (bb_params != NULL);
assert (bb != NULL);
if (params->flags & IB_NOWRITE)
return (1);
/* block 0: driver map */
if (pread(params->fsfd, &dm, MACPPC_BOOT_BLOCK_BLOCKSIZE, 0) !=
MACPPC_BOOT_BLOCK_BLOCKSIZE) {
warn("Can't read sector 0 of `%s'", params->filesystem);
return (0);
}
dm.sbSig = htobe16(APPLE_DRVR_MAP_MAGIC);
dm.sbBlockSize = htobe16(512);
dm.sbBlkCount = htobe32(0);
rv = pwrite(params->fsfd, &dm, MACPPC_BOOT_BLOCK_BLOCKSIZE, 0);
#ifdef DIOCWLABEL
if (rv == -1 && errno == EROFS) {
/*
* block 0 is LABELSECTOR which might be protected by
* bounds_check_with_label(9).
*/
int enable;
enable = 1;
rv = ioctl(params->fsfd, DIOCWLABEL, &enable);
if (rv != 0) {
warn("Cannot enable writes to the label sector");
return 0;
}
rv = pwrite(params->fsfd, &dm, MACPPC_BOOT_BLOCK_BLOCKSIZE, 0);
/* Reset write-protect. */
enable = 0;
(void)ioctl(params->fsfd, DIOCWLABEL, &enable);
}
#endif
if (rv != MACPPC_BOOT_BLOCK_BLOCKSIZE) {
warn("Can't write sector 0 of `%s'", params->filesystem);
return (0);
}
/* block 1: Apple Partition Map */
memset(&pme, 0, sizeof(pme));
pme.pmSig = htobe16(APPLE_PART_MAP_ENTRY_MAGIC);
pme.pmMapBlkCnt = htobe32(2);
pme.pmPyPartStart = htobe32(1);
pme.pmPartBlkCnt = htobe32(2);
pme.pmDataCnt = htobe32(2);
strlcpy(pme.pmPartName, "Apple", sizeof(pme.pmPartName));
strlcpy(pme.pmPartType, "Apple_partition_map", sizeof(pme.pmPartType));
pme.pmPartStatus = htobe32(0x37);
if (pwrite(params->fsfd, &pme, MACPPC_BOOT_BLOCK_BLOCKSIZE,
1 * MACPPC_BOOT_BLOCK_BLOCKSIZE) != MACPPC_BOOT_BLOCK_BLOCKSIZE) {
warn("Can't write Apple Partition Map into sector 1 of `%s'",
params->filesystem);
return (0);
}
/* block 2: NetBSD partition */
memset(&pme, 0, sizeof(pme));
pme.pmSig = htobe16(APPLE_PART_MAP_ENTRY_MAGIC);
pme.pmMapBlkCnt = htobe32(2);
pme.pmPyPartStart = htobe32(4);
pme.pmPartBlkCnt = htobe32(0x7fffffff);
pme.pmDataCnt = htobe32(0x7fffffff);
strlcpy(pme.pmPartName, "NetBSD", sizeof(pme.pmPartName));
strlcpy(pme.pmPartType, "NetBSD/macppc", sizeof(pme.pmPartType));
pme.pmPartStatus = htobe32(0x3b);
pme.pmBootSize = htobe32(roundup(params->s1stat.st_size, 512));
pme.pmBootLoad = htobe32(0x4000);
pme.pmBootEntry = htobe32(0x4000);
strlcpy(pme.pmProcessor, "PowerPC", sizeof(pme.pmProcessor));
if (pwrite(params->fsfd, &pme, MACPPC_BOOT_BLOCK_BLOCKSIZE,
2 * MACPPC_BOOT_BLOCK_BLOCKSIZE) != MACPPC_BOOT_BLOCK_BLOCKSIZE) {
warn("Can't write Apple Partition Map into sector 2 of `%s'",
params->filesystem);
return (0);
}
return (1);
}