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|
/* $NetBSD: md.c,v 1.13 2022/01/29 16:01:19 martin Exp $ */
/*
* Copyright 1997 Piermont Information Systems Inc.
* All rights reserved.
*
* Based on code written by Philip A. Nelson for Piermont Information
* Systems Inc.
*
* 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.
* 3. The name of Piermont Information Systems Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``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 PIERMONT INFORMATION SYSTEMS INC. 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.
*/
/* md.c -- ofppc machine specific routines */
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/disklabel_rdb.h>
#include <stdio.h>
#include <util.h>
#include <machine/cpu.h>
#include "defs.h"
#include "md.h"
#include "msg_defs.h"
#include "menu_defs.h"
#include "endian.h"
static int check_rdb(void);
static uint32_t rdbchksum(void *);
/* We use MBR_PTYPE_PREP like port-prep does. */
static int nonewfsmsdos = 0, nobootfix = 0, noprepfix=0;
static part_id bootpart_fat12 = NO_PART, bootpart_binfo = NO_PART,
bootpart_prep = NO_PART;
static int bootinfo_mbr = 1;
static int rdb_found = 0;
/* bootstart/bootsize are for the fat */
int binfostart, binfosize, bprepstart, bprepsize;
void
md_init(void)
{
}
void
md_init_set_status(int flags)
{
(void)flags;
}
bool
md_get_info(struct install_partition_desc *install)
{
int res;
if (check_rdb())
return true;
if (pm->no_mbr || pm->no_part)
return true;
again:
if (pm->parts == NULL) {
const struct disk_partitioning_scheme *ps =
select_part_scheme(pm, NULL, true, NULL);
if (!ps)
return false;
struct disk_partitions *parts =
(*ps->create_new_for_disk)(pm->diskdev,
0, pm->dlsize, true, NULL);
if (!parts)
return false;
pm->parts = parts;
if (ps->size_limit > 0 && pm->dlsize > ps->size_limit)
pm->dlsize = ps->size_limit;
}
res = set_bios_geom_with_mbr_guess(pm->parts);
if (res == 0)
return false;
else if (res == 1)
return true;
pm->parts->pscheme->destroy_part_scheme(pm->parts);
pm->parts = NULL;
goto again;
}
/*
* md back-end code for menu-driven BSD disklabel editor.
*/
int
md_make_bsd_partitions(struct install_partition_desc *install)
{
#if 0
int i;
int part;
int maxpart = getmaxpartitions();
int partstart;
int part_raw, part_bsd;
int ptend;
int no_swap = 0;
#endif
if (rdb_found) {
#if 0
/*
* XXX - need to test on real machine if the disklabel code
* deals with RDB partitions properly, otherwise write
* a read-only RDB backend
*/
/*
* We found RDB partitions on the disk, which cannot be
* modified by rewriting the disklabel.
* So just use what we have got.
*/
for (part = 0; part < maxpart; part++) {
if (PI_ISBSDFS(&pm->bsdlabel[part])) {
pm->bsdlabel[part].pi_flags |=
PIF_NEWFS | PIF_MOUNT;
if (part == PART_A)
strcpy(pm->bsdlabel[part].pi_mount, "/");
}
}
part_bsd = part_raw = getrawpartition();
if (part_raw == -1)
part_raw = PART_C; /* for sanity... */
pm->bsdlabel[part_raw].pi_offset = 0;
pm->bsdlabel[part_raw].pi_size = pm->dlsize;
set_sizemultname_meg();
rdb_edit_check:
if (edit_and_check_label(pm->bsdlabel, maxpart, part_raw,
part_bsd) == 0) {
msg_display(MSG_abort);
return 0;
}
if (md_check_partitions() == 0)
goto rdb_edit_check;
#endif
return 1;
}
/*
* Initialize global variables that track space used on this disk.
* Standard 4.4BSD 8-partition labels always cover whole disk.
*/
if (pm->ptsize == 0)
pm->ptsize = pm->dlsize - pm->ptstart;
if (pm->dlsize == 0)
pm->dlsize = pm->ptstart + pm->ptsize;
#if 0
partstart = pm->ptstart;
ptend = pm->ptstart + pm->ptsize;
/* Ask for layout type -- standard or special */
msg_fmt_display(MSG_layout, "%d%d%d",
pm->ptsize / (MEG / pm->sectorsize),
DEFROOTSIZE + DEFSWAPSIZE + DEFUSRSIZE,
DEFROOTSIZE + DEFSWAPSIZE + DEFUSRSIZE + XNEEDMB);
process_menu(MENU_layout, NULL);
/* Set so we use the 'real' geometry for rounding, input in MB */
pm->current_cylsize = pm->dlcylsize;
set_sizemultname_meg();
/* Build standard partitions */
memset(&pm->bsdlabel, 0, sizeof pm->bsdlabel);
/* Set initial partition types to unused */
for (part = 0 ; part < maxpart ; ++part)
pm->bsdlabel[part].pi_fstype = FS_UNUSED;
/* Whole disk partition */
part_raw = getrawpartition();
if (part_raw == -1)
part_raw = PART_C; /* for sanity... */
pm->bsdlabel[part_raw].pi_offset = 0;
pm->bsdlabel[part_raw].pi_size = pm->dlsize;
if (part_raw == PART_D) {
/* Probably a system that expects an i386 style mbr */
part_bsd = PART_C;
pm->bsdlabel[PART_C].pi_offset = pm->ptstart;
pm->bsdlabel[PART_C].pi_size = pm->ptsize;
} else {
part_bsd = part_raw;
}
if (pm->bootsize != 0) {
pm->bsdlabel[PART_BOOT_FAT12].pi_fstype = FS_MSDOS;
pm->bsdlabel[PART_BOOT_FAT12].pi_size = pm->bootsize;
pm->bsdlabel[PART_BOOT_FAT12].pi_offset = pm->bootstart;
pm->bsdlabel[PART_BOOT_FAT12].pi_flags |= PART_BOOT_FAT12_PI_FLAGS;
strlcpy(pm->bsdlabel[PART_BOOT_FAT12].pi_mount,
PART_BOOT_FAT12_PI_MOUNT,
sizeof pm->bsdlabel[PART_BOOT_FAT12].pi_mount);
}
if (binfosize != 0) {
pm->bsdlabel[PART_BOOT_BINFO].pi_fstype = FS_OTHER;
pm->bsdlabel[PART_BOOT_BINFO].pi_size = binfosize;
pm->bsdlabel[PART_BOOT_BINFO].pi_offset = binfostart;
}
if (bprepsize != 0) {
pm->bsdlabel[PART_BOOT_PREP].pi_fstype = FS_BOOT;
pm->bsdlabel[PART_BOOT_PREP].pi_size = bprepsize;
pm->bsdlabel[PART_BOOT_PREP].pi_offset = bprepstart;
}
#ifdef PART_REST
pm->bsdlabel[PART_REST].pi_offset = 0;
pm->bsdlabel[PART_REST].pi_size = pm->ptstart;
#endif
/*
* Save any partitions that are outside the area we are
* going to use.
* In particular this saves details of the other MBR
* partitions on a multiboot i386 system.
*/
for (i = maxpart; i--;) {
if (pm->bsdlabel[i].pi_size != 0)
/* Don't overwrite special partitions */
continue;
p = &pm->oldlabel[i];
if (p->pi_fstype == FS_UNUSED || p->pi_size == 0)
continue;
if (layoutkind == LY_USEEXIST) {
if (PI_ISBSDFS(p))
p->pi_flags |= PIF_MOUNT;
} else {
if (p->pi_offset < pm->ptstart + pm->ptsize &&
p->pi_offset + p->pi_size > pm->ptstart)
/* Not outside area we are allocating */
continue;
if (p->pi_fstype == FS_SWAP)
no_swap = 1;
}
pm->bsdlabel[i] = pm->oldlabel[i];
}
if (layoutkind == LY_USEEXIST) {
/* XXX Check we have a sensible layout */
;
} else
get_ptn_sizes(partstart, ptend - partstart, no_swap);
/*
* OK, we have a partition table. Give the user the chance to
* edit it and verify it's OK, or abort altogether.
*/
edit_check:
if (edit_and_check_label(pm->bsdlabel, maxpart, part_raw, part_bsd) == 0) {
msg_display(MSG_abort);
return 0;
}
if (md_check_partitions() == 0)
goto edit_check;
/* Disk name */
msg_prompt(MSG_packname, pm->bsddiskname, pm->bsddiskname, sizeof pm->bsddiskname);
/* save label to disk for MI code to update. */
(void) savenewlabel(pm->bsdlabel, maxpart);
/* Everything looks OK. */
return 1;
#endif
return make_bsd_partitions(install);
}
/*
* any additional partition validation
*/
bool
md_check_partitions(struct install_partition_desc *install)
{
struct disk_partitions *parts;
struct disk_part_info info;
int fprep=0, ffat=0;
part_id part;
if (rdb_found)
return 1;
if (install->num < 1)
return false;
parts = install->infos[0].parts; /* disklabel parts */
if (parts->parent)
parts = parts->parent; /* MBR parts */
/* we need to find a boot partition, otherwise we can't create
* our msdos fs boot partition. We make the assumption that
* the user hasn't done something stupid, like move it away
* from the MBR partition.
*/
for (part = 0; part < parts->num_part; part++) {
if (!parts->pscheme->get_part_info(parts, part, &info))
continue;
if (info.fs_type == FS_MSDOS) {
bootpart_fat12 = part;
ffat++;
} else if (info.fs_type == FS_BOOT) {
bootpart_prep = part;
fprep++;
} else if (info.fs_type == FS_OTHER) {
bootpart_binfo = part;
fprep++;
}
}
/* oh, the confusion */
if (ffat >= 1 && fprep < 2) {
noprepfix = 1;
return true;
}
if (ffat < 1 && fprep >= 2) {
nobootfix = 1;
return true;
}
if (ffat >=1 && fprep >= 2) {
return true;
}
msg_display(MSG_nobootpartdisklabel);
process_menu(MENU_ok, NULL);
nobootfix = 1;
return false;
}
/*
* hook called before writing new disklabel.
*/
bool
md_pre_disklabel(struct install_partition_desc *install,
struct disk_partitions *parts)
{
if (rdb_found)
return true;
if (parts->parent == NULL)
return true; /* no outer partitions */
parts = parts->parent;
msg_display_subst(MSG_dofdisk, 3, parts->disk,
msg_string(parts->pscheme->name),
msg_string(parts->pscheme->short_name));
/* write edited "MBR" onto disk. */
if (!parts->pscheme->write_to_disk(parts)) {
msg_display(MSG_wmbrfail);
process_menu(MENU_ok, NULL);
return false;
}
return true;
}
/*
* hook called after writing disklabel to new target disk.
*/
bool
md_post_disklabel(struct install_partition_desc *install,
struct disk_partitions *parts)
{
char bootdev[100];
if (pm->bootstart == 0 || pm->bootsize == 0 || rdb_found)
return 0;
snprintf(bootdev, sizeof bootdev, "/dev/r%s%c", pm->diskdev,
(char)('a'+bootpart_fat12));
run_program(RUN_DISPLAY, "/sbin/newfs_msdos %s", bootdev);
return 0;
}
/*
* hook called after upgrade() or install() has finished setting
* up the target disk but immediately before the user is given the
* ``disks are now set up'' message.
*/
int
md_post_newfs(struct install_partition_desc *install)
{
/* No bootblock. We use ofwboot from a partition visiable by OFW. */
return 0;
}
int
md_post_extract(struct install_partition_desc *install, bool upgrade)
{
char bootdev[100], bootbdev[100], version[64];
struct disk_partitions *parts;
/* if we can't make it bootable, just punt */
if ((nobootfix && noprepfix) || rdb_found)
return 0;
snprintf(version, sizeof version, "NetBSD/%s %s", MACH, REL);
run_program(RUN_DISPLAY, "/usr/mdec/mkbootinfo '%s' %d "
"/tmp/bootinfo.txt", version, bootinfo_mbr);
if (!nobootfix) {
run_program(RUN_DISPLAY, "/bin/mkdir -p /%s/boot/ppc",
target_prefix());
run_program(RUN_DISPLAY, "/bin/mkdir -p /%s/boot/netbsd",
target_prefix());
run_program(RUN_DISPLAY, "/bin/cp /usr/mdec/ofwboot "
"/%s/boot/netbsd", target_prefix());
run_program(RUN_DISPLAY, "/bin/cp /tmp/bootinfo.txt "
"/%s/boot/ppc", target_prefix());
run_program(RUN_DISPLAY, "/bin/cp /usr/mdec/ofwboot "
"/%s/boot/ofwboot", target_prefix());
}
if (!noprepfix && install != NULL && install->num > 0) {
parts = install->infos[0].parts; /* disklabel */
if (parts->parent != NULL)
parts = parts->parent; /* MBR */
parts->pscheme->get_part_device(parts, bootpart_prep,
bootdev, sizeof bootdev, NULL, raw_dev_name, true, true);
parts->pscheme->get_part_device(parts, bootpart_prep,
bootbdev, sizeof bootbdev, NULL, plain_name, true, true);
run_program(RUN_DISPLAY, "/bin/dd if=/dev/zero of=%s bs=512",
bootdev);
run_program(RUN_DISPLAY, "/bin/dd if=/usr/mdec/ofwboot "
"of=%s bs=512", bootbdev);
parts->pscheme->get_part_device(parts, bootpart_binfo,
bootdev, sizeof bootdev, NULL, raw_dev_name, true, true);
parts->pscheme->get_part_device(parts, bootpart_binfo,
bootbdev, sizeof bootbdev, NULL, plain_name, true, true);
run_program(RUN_DISPLAY, "/bin/dd if=/dev/zero of=%s bs=512",
bootdev);
run_program(RUN_DISPLAY, "/bin/dd if=/tmp/bootinfo.txt "
"of=%s bs=512", bootbdev);
}
return 0;
}
void
md_cleanup_install(struct install_partition_desc *install)
{
#ifndef DEBUG
enable_rc_conf();
#endif
}
int
md_pre_update(struct install_partition_desc *install)
{
#if 0
struct mbr_partition *part;
mbr_info_t *ext;
int i;
#endif
if (check_rdb())
return 1;
#if 0
read_mbr(pm->diskdev, &mbr);
/* do a sanity check of the partition table */
for (ext = &mbr; ext; ext = ext->extended) {
part = ext->mbr.mbr_parts;
for (i = 0; i < MBR_PART_COUNT; part++, i++) {
if (part->mbrp_type == MBR_PTYPE_PREP &&
part->mbrp_size > 50)
bootinfo_mbr = i+1;
if (part->mbrp_type == MBR_PTYPE_RESERVED_x21 &&
part->mbrp_size < (MIN_FAT12_BOOT/512)) {
msg_display(MSG_boottoosmall);
msg_fmt_display_add(MSG_nobootpartdisklabel,
"%d", 0);
if (!ask_yesno(NULL))
return 0;
nobootfix = 1;
}
}
}
#endif
if (!md_check_partitions(install))
return 0;
return 1;
}
/* Upgrade support */
int
md_update(struct install_partition_desc *install)
{
nonewfsmsdos = 1;
md_post_newfs(install);
return 1;
}
int
md_check_mbr(struct disk_partitions *parts, mbr_info_t *mbri, bool quiet)
{
mbr_info_t *ext;
struct mbr_partition *part;
int i;
for (ext = mbri; ext; ext = ext->extended) {
part = ext->mbr.mbr_parts;
for (i = 0; i < MBR_PART_COUNT; part++, i++) {
if (part->mbrp_type == MBR_PTYPE_FAT12) {
pm->bootstart = part->mbrp_start;
pm->bootsize = part->mbrp_size;
} else if (part->mbrp_type == MBR_PTYPE_PREP &&
part->mbrp_size < 50) {
/* this is the bootinfo partition */
binfostart = part->mbrp_start;
binfosize = part->mbrp_size;
bootinfo_mbr = i+1;
} else if (part->mbrp_type == MBR_PTYPE_PREP &&
part->mbrp_size > 50) {
bprepstart = part->mbrp_start;
bprepsize = part->mbrp_size;
}
break;
}
}
/* we need to either have a pair of prep partitions, or a single
* fat. if neither, things are broken. */
if (!(pm->bootsize >= (MIN_FAT12_BOOT/512) ||
(binfosize >= (MIN_BINFO_BOOT/512) &&
bprepsize >= (MIN_PREP_BOOT/512)))) {
if (quiet)
return 0;
msg_display(MSG_bootnotright);
return ask_reedit(parts);
}
/* check the prep partitions */
if ((binfosize > 0 || bprepsize > 0) &&
(binfosize < (MIN_BINFO_BOOT/512) ||
bprepsize < (MIN_PREP_BOOT/512))) {
if (quiet)
return 0;
msg_display(MSG_preptoosmall);
return ask_reedit(parts);
}
/* check the fat12 parititons */
if (pm->bootsize > 0 && pm->bootsize < (MIN_FAT12_BOOT/512)) {
if (quiet)
return 0;
msg_display(MSG_boottoosmall);
return ask_reedit(parts);
}
/* if both sets contain zero, thats bad */
if ((pm->bootstart == 0 || pm->bootsize == 0) &&
(binfosize == 0 || binfostart == 0 ||
bprepsize == 0 || bprepstart == 0)) {
if (quiet)
return 0;
msg_display(MSG_nobootpart);
return ask_reedit(parts);
}
return 2;
}
/*
* NOTE, we use a reserved partition type, because some RS/6000 machines hang
* hard if they find a FAT12, and if we use type prep, that indicates that
* it should be read raw.
* One partition for FAT12 booting
* One partition for NetBSD
* One partition to hold the bootinfo.txt file
* One partition to hold ofwboot
*/
bool
md_parts_use_wholedisk(struct disk_partitions *parts)
{
struct disk_part_info boot_parts[] =
{
{ .fs_type = FS_MSDOS, .size = FAT12_BOOT_SIZE/512 },
{ .fs_type = FS_OTHER, .size = BINFO_BOOT_SIZE/512 },
{ .fs_type = FS_BOOT, .size = PREP_BOOT_SIZE/512 }
};
return parts_use_wholedisk(parts, __arraycount(boot_parts),
boot_parts);
}
const char *md_disklabel_cmd(void)
{
/* we cannot rewrite an RDB disklabel */
if (rdb_found)
return "sync No disklabel";
return "disklabel -w -r";
}
static int
check_rdb(void)
{
char buf[512], diskpath[MAXPATHLEN];
struct rdblock *rdb;
off_t blk;
int fd;
/* Find out if this disk has a valid RDB, before continuing. */
rdb = (struct rdblock *)buf;
fd = opendisk(pm->diskdev, O_RDONLY, diskpath, sizeof(diskpath), 0);
if (fd < 0)
return 0;
for (blk = 0; blk < RDB_MAXBLOCKS; blk++) {
if (pread(fd, rdb, 512, blk * 512) != 512)
return 0;
if (rdb->id == RDBLOCK_ID && rdbchksum(rdb) == 0) {
rdb_found = 1; /* do not repartition! */
return 1;
}
}
return 0;
}
static uint32_t
rdbchksum(void *bdata)
{
uint32_t *blp, cnt, val;
blp = bdata;
cnt = blp[1];
val = 0;
while (cnt--)
val += *blp++;
return val;
}
int
md_pre_mount(struct install_partition_desc *install, size_t ndx)
{
return 0;
}
bool
md_mbr_update_check(struct disk_partitions *parts, mbr_info_t *mbri)
{
return false; /* no change, no need to write back */
}
#ifdef HAVE_GPT
bool
md_gpt_post_write(struct disk_partitions *parts, part_id root_id,
bool root_is_new, part_id efi_id, bool efi_is_new)
{
/* no GPT boot support, nothing needs to be done here */
return true;
}
#endif
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