* Copyright 1997 Piermont Information Systems Inc.

/* $NetBSD: md.c,v 1.14 2022/01/29 16:01:17 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 -- arc machine specific routines */

#include <sys/param.h>
#include <sys/sysctl.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"

/*
* ARC BIOS reognizes only FAT, so we have to have a FAT partition
* to store our native bootloader.
*/
static int nobootfs = 0;

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 (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)
{

return make_bsd_partitions(install);
}

/*
* any additional partition validation
*/
bool
md_check_partitions(struct install_partition_desc *install)
{
size_t i;

/*
* We need to find a boot partition, otherwise we can't write our
* bootloader. We make the assumption that the user hasn't done
* something stupid, like move it away from the MBR partition.
*/
for (i = 0; i < install->num; i++) {
if (install->infos[i].fs_type == FS_MSDOS)
return true;
}

msg_display(MSG_nobootpartdisklabel);
process_menu(MENU_ok, NULL);
return false;
}

/*
* hook called before writing new disklabel.
*/
bool
md_pre_disklabel(struct install_partition_desc *install,
struct disk_partitions *parts)
{

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)
{
return true;
}

/*
* 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)
{
if (!nobootfs) {
msg_fmt_display(msg_string(MSG_copybootloader), "%s",
pm->diskdev);
cp_to_target("/usr/mdec/boot", PART_BOOT_MOUNT);
}

return 0;
}

int
md_post_extract(struct install_partition_desc *install, bool upgrade)
{
return 0;
}

void
md_cleanup_install(struct install_partition_desc *install)
{
#ifndef DEBUG
enable_rc_conf();
#endif
msg_display(MSG_howtoboot);
process_menu(MENU_ok, NULL);
}

int
md_pre_update(struct install_partition_desc *install)
{
size_t i;

/*
* Verify the msdos partition exists and is big enough.
*/
for (i = 0; i < install->num; i++) {
if (install->infos[i].fs_type != PART_BOOT_TYPE)
continue;
if (install->infos[i].size/512 >= PART_BOOT_MIN)
break;
msg_display(MSG_boottoosmall);
msg_fmt_display_add(MSG_nobootpart, "%d", 0);
if (!ask_yesno(NULL))
return false;
nobootfs = 1;
break;
}

if (md_check_partitions(install) == 0)
nobootfs = 1;

return 1;
}

/* Upgrade support */
int
md_update(struct install_partition_desc *install)
{
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;
break;
}
}
}
if (pm->bootsize < (PART_BOOT_MIN / 512)) {
if (quiet)
return 0;
msg_display(MSG_boottoosmall);
return ask_reedit(parts);
}
if (pm->bootstart == 0 || pm->bootsize == 0) {
if (quiet)
return 0;
msg_display(MSG_nobootpart);
return ask_reedit(parts);
}
return 2;
}

bool
md_parts_use_wholedisk(struct disk_partitions *parts)
{
struct disk_part_info boot_part = {
.size = PART_BOOT / 512,
.fs_type = PART_BOOT_TYPE,
.fs_sub_type = MBR_PTYPE_FAT12,
.last_mounted = PART_BOOT_MOUNT,
};

boot_part.nat_type = parts->pscheme->get_fs_part_type(
PT_root, boot_part.fs_type, boot_part.fs_sub_type);

return parts_use_wholedisk(parts, 1, &boot_part);
}

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