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NetBSD/distrib/utils/sysinst/arch/arm32/md.c

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/* $NetBSD: md.c,v 1.21 1999/06/27 00:23:07 cgd 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Piermont Information Systems Inc.
* 4. 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 -- arm32 machine specific routines */
#include <stdio.h>
#include <curses.h>
#include <unistd.h>
#include <fcntl.h>
#include <util.h>
#include <sys/types.h>
#include <sys/disklabel.h>
#include <sys/ioctl.h>
#include <sys/param.h>
#include "defs.h"
#include "md.h"
#include "msg_defs.h"
#include "menu_defs.h"
void backtowin(void);
static int
filecore_checksum(u_char *bootblock);
/*
* static int filecore_checksum(u_char *bootblock)
*
* Calculates the filecore boot block checksum. This is used to validate
* a filecore boot block on the disk. If a boot block is validated then
* it is used to locate the partition table. If the boot block is not
* validated, it is assumed that the whole disk is NetBSD.
*
* The basic algorithm is:
*
* for (each byte in block, excluding checksum) {
* sum += byte;
* if (sum > 255)
* sum -= 255;
* }
*
* That's equivalent to summing all of the bytes in the block
* (excluding the checksum byte, of course), then calculating the
* checksum as "cksum = sum - ((sum - 1) / 255) * 255)". That
* expression may or may not yield a faster checksum function,
* but it's easier to reason about.
*
* Note that if you have a block filled with bytes of a single
* value "X" (regardless of that value!) and calculate the cksum
* of the block (excluding the checksum byte), you will _always_
* end up with a checksum of X. (Do the math; that can be derived
* from the checksum calculation function!) That means that
* blocks which contain bytes which all have the same value will
* always checksum properly. That's a _very_ unlikely occurence
* (probably impossible, actually) for a valid filecore boot block,
* so we treat such blocks as invalid.
*/
static int
filecore_checksum(bootblock)
u_char *bootblock;
{
u_char byte0, accum_diff;
u_int sum;
int i;
sum = 0;
accum_diff = 0;
byte0 = bootblock[0];
/*
* Sum the contents of the block, keeping track of whether
* or not all bytes are the same. If 'accum_diff' ends up
* being zero, all of the bytes are, in fact, the same.
*/
for (i = 0; i < 511; ++i) {
sum += bootblock[i];
accum_diff |= bootblock[i] ^ byte0;
}
/*
* Check to see if the checksum byte is the same as the
* rest of the bytes, too. (Note that if all of the bytes
* are the same except the checksum, a checksum compare
* won't succeed, but that's not our problem.)
*/
accum_diff |= bootblock[i] ^ byte0;
/* All bytes in block are the same; call it invalid. */
if (accum_diff == 0)
return (-1);
return (sum - ((sum - 1) / 255) * 255);
}
int md_get_info (void)
{ struct disklabel disklabel;
int fd;
char devname[100];
static char bb[DEV_BSIZE];
struct filecore_bootblock *fcbb = (struct filecore_bootblock *)bb;
int offset = 0;
if (strncmp(disk->dd_name, "wd", 2) == 0)
disktype = "ST506";
else
disktype = "SCSI";
snprintf(devname, 100, "/dev/r%sc", diskdev);
fd = open(devname, O_RDONLY, 0);
if (fd < 0) {
endwin();
fprintf(stderr, "Can't open %s\n", devname);
exit(1);
}
if (ioctl(fd, DIOCGDINFO, &disklabel) == -1) {
endwin();
fprintf(stderr, "Can't read disklabel on %s.\n", devname);
close(fd);
exit(1);
}
if (lseek(fd, (off_t)FILECORE_BOOT_SECTOR * DEV_BSIZE, SEEK_SET) < 0
|| read(fd, bb, sizeof(bb)) < sizeof(bb)) {
endwin();
fprintf(stderr, msg_string(MSG_badreadbb));
close(fd);
exit(1);
}
/* Check if table is valid. */
if (filecore_checksum(bb) == fcbb->checksum) {
/*
* Check for NetBSD/arm32 (RiscBSD) partition marker.
* If found the NetBSD disklabel location is easy.
*/
offset = (fcbb->partition_cyl_low +
(fcbb->partition_cyl_high << 8)) *
fcbb->heads * fcbb->secspertrack;
if (fcbb->partition_type == PARTITION_FORMAT_RISCBSD)
;
else if (fcbb->partition_type == PARTITION_FORMAT_RISCIX) {
/*
* Ok we need to read the RISCiX partition table and
* search for a partition named RiscBSD, NetBSD or
* Empty:
*/
struct riscix_partition_table *riscix_part =
(struct riscix_partition_table *)bb;
struct riscix_partition *part;
int loop;
if (lseek(fd, (off_t)offset * DEV_BSIZE, SEEK_SET) < 0
|| read(fd, bb, sizeof(bb)) < sizeof(bb)) {
endwin();
fprintf(stderr, msg_string(MSG_badreadriscix));
close(fd);
exit(1);
}
/* Break out as soon as we find a suitable partition */
for (loop = 0; loop < NRISCIX_PARTITIONS; ++loop) {
part = &riscix_part->partitions[loop];
if (strcmp(part->rp_name, "RiscBSD") == 0
|| strcmp(part->rp_name, "NetBSD") == 0
|| strcmp(part->rp_name, "Empty:") == 0) {
offset = part->rp_start;
break;
}
}
if (loop == NRISCIX_PARTITIONS) {
/*
* Valid filecore boot block, RISCiX partition
* table but no NetBSD partition. We should
* leave this disc alone.
*/
endwin();
fprintf(stderr, msg_string(MSG_notnetbsdriscix));
close(fd);
exit(1);
}
} else {
/*
* Valid filecore boot block and no non-ADFS partition.
* This means that the whole disc is allocated for ADFS
* so do not trash ! If the user really wants to put a
* NetBSD disklabel on the disc then they should remove
* the filecore boot block first with dd.
*/
endwin();
fprintf(stderr, msg_string(MSG_notnetbsd));
close(fd);
exit(1);
}
}
close(fd);
dlcyl = disklabel.d_ncylinders;
dlhead = disklabel.d_ntracks;
dlsec = disklabel.d_nsectors;
sectorsize = disklabel.d_secsize;
dlcylsize = disklabel.d_secpercyl;
/*
* Compute whole disk size. Take max of (dlcyl*dlhead*dlsec)
* and secperunit, just in case the disk is already labelled.
* (If our new label's RAW_PART size ends up smaller than the
* in-core RAW_PART size value, updating the label will fail.)
*/
dlsize = dlcyl*dlhead*dlsec;
if (disklabel.d_secperunit > dlsize)
dlsize = disklabel.d_secperunit;
/* Compute minimum NetBSD partition sizes (in sectors). */
minfsdmb = (80 + 4*rammb) * (MEG / sectorsize);
ptstart = offset;
/* endwin();
printf("dlcyl=%d\n", dlcyl);
printf("dlhead=%d\n", dlhead);
printf("dlsec=%d\n", dlsec);
printf("secsz=%d\n", sectorsize);
printf("cylsz=%d\n", dlcylsize);
printf("dlsz=%d\n", dlsize);
printf("pstart=%d\n", ptstart);
printf("pstart=%d\n", partsize);
printf("secpun=%d\n", disklabel.d_secperunit);
backtowin();*/
return 1;
}
int md_pre_disklabel (void)
{
return 0;
}
int md_post_disklabel (void)
{
return 0;
}
int md_post_newfs (void)
{
#if 0
/* XXX boot blocks ... */
printf(msg_string(MSG_dobootblks), diskdev);
run_prog(0, 1, NULL, "/sbin/disklabel -B %s /dev/r%sc",
"-b /usr/mdec/rzboot -s /usr/mdec/bootrz", diskdev);
#endif
return 0;
}
int md_copy_filesystem (void)
{
return 0;
}
int md_make_bsd_partitions (void)
{
int i, part;
int remain;
char isize[20];
int maxpart = getmaxpartitions();
/*
* Initialize global variables that track space used on this disk.
* Standard 4.3BSD 8-partition labels always cover whole disk.
*/
ptsize = dlsize - ptstart;
fsdsize = dlsize; /* actually means `whole disk' */
fsptsize = dlsize - ptstart; /* netbsd partition -- same as above */
fsdmb = fsdsize / MEG;
/* endwin();
printf("ptsize=%d\n", ptsize);
printf("fsdsize=%d\n", fsdsize);
printf("fsptsize=%d\n", fsptsize);
printf("fsdmb=%d\n", fsdmb);
backtowin();*/
/*editlab:*/
/* Ask for layout type -- standard or special */
msg_display (MSG_layout,
(1.0*fsptsize*sectorsize)/MEG,
(1.0*minfsdmb*sectorsize)/MEG,
(1.0*minfsdmb*sectorsize)/MEG+rammb+XNEEDMB);
process_menu(MENU_layout);
if (layoutkind == 3) {
ask_sizemult();
} else {
sizemult = MEG / sectorsize;
multname = msg_string(MSG_megname);
}
/* Build standard partitions */
emptylabel(bsdlabel);
/* Partitions C is predefined (whole disk). */
bsdlabel[C].pi_fstype = FS_UNUSED;
bsdlabel[C].pi_offset = 0;
bsdlabel[C].pi_size = dlsize;
/* Standard fstypes */
bsdlabel[A].pi_fstype = FS_BSDFFS;
bsdlabel[B].pi_fstype = FS_SWAP;
/* Conventionally, C is whole disk and D in the non NetBSD bit */
bsdlabel[D].pi_fstype = FS_UNUSED;
bsdlabel[D].pi_offset = 0;
bsdlabel[D].pi_size = ptstart;
/* if (ptstart > 0)
bsdlabel[D].pi_fstype = T_FILECORE;*/
bsdlabel[E].pi_fstype = FS_UNUSED; /* fill out below */
bsdlabel[F].pi_fstype = FS_UNUSED;
bsdlabel[G].pi_fstype = FS_UNUSED;
bsdlabel[H].pi_fstype = FS_UNUSED;
switch (layoutkind) {
case 1: /* standard: a root, b swap, c/d "unused", e /usr */
case 2: /* standard X: a root, b swap (big), c/d "unused", e /usr */
partstart = ptstart;
/* Root */
i = NUMSEC(24+2*rammb, MEG/sectorsize, dlcylsize) + partstart;
partsize = NUMSEC(i/(MEG/sectorsize)+1, MEG/sectorsize,
dlcylsize) - partstart;
bsdlabel[A].pi_offset = partstart;
bsdlabel[A].pi_size = partsize;
bsdlabel[A].pi_bsize = 8192;
bsdlabel[A].pi_fsize = 1024;
strcpy(fsmount[A], "/");
partstart += partsize;
/* swap */
i = NUMSEC(layoutkind * 2 * (rammb < 32 ? 32 : rammb),
MEG/sectorsize, dlcylsize) + partstart;
partsize = NUMSEC(i/(MEG/sectorsize)+1, MEG/sectorsize,
dlcylsize) - partstart;
bsdlabel[B].pi_offset = partstart;
bsdlabel[B].pi_size = partsize;
partstart += partsize;
/* /usr */
partsize = fsptsize - (partstart - ptstart);
bsdlabel[E].pi_fstype = FS_BSDFFS;
bsdlabel[E].pi_offset = partstart;
bsdlabel[E].pi_size = partsize;
bsdlabel[E].pi_bsize = 8192;
bsdlabel[E].pi_fsize = 1024;
strcpy(fsmount[E], "/usr");
break;
case 3: /* custom: ask user for all sizes */
ask_sizemult();
partstart = ptstart;
remain = fsptsize;
/* root */
i = NUMSEC(24+2*rammb, MEG/sectorsize, dlcylsize) + partstart;
partsize = NUMSEC(i/(MEG/sectorsize)+1, MEG/sectorsize,
dlcylsize) - partstart;
snprintf(isize, 20, "%d", partsize / sizemult);
msg_prompt(MSG_askfsroot, isize, isize, 20,
remain/sizemult, multname);
partsize = NUMSEC(atoi(isize), sizemult, dlcylsize);
bsdlabel[A].pi_offset = partstart;
bsdlabel[A].pi_size = partsize;
bsdlabel[A].pi_bsize = 8192;
bsdlabel[A].pi_fsize = 1024;
strcpy(fsmount[A], "/");
partstart += partsize;
remain -= partsize;
/* swap */
i = NUMSEC(4 * (rammb < 32 ? 32 : rammb),
MEG/sectorsize, dlcylsize) + partstart;
partsize = NUMSEC(i/(MEG/sectorsize)+1, MEG/sectorsize,
dlcylsize) - partstart;
snprintf(isize, 20, "%d", partsize/sizemult);
msg_prompt_add(MSG_askfsswap, isize, isize, 20,
remain/sizemult, multname);
partsize = NUMSEC(atoi(isize),sizemult, dlcylsize);
bsdlabel[B].pi_offset = partstart;
bsdlabel[B].pi_size = partsize;
partstart += partsize;
remain -= partsize;
/* Others E, F, G, H */
part = E;
if (remain > 0)
msg_display(MSG_otherparts);
while (remain > 0 && part <= H) {
partsize = remain;
snprintf (isize, 20, "%d", partsize/sizemult);
msg_prompt_add(MSG_askfspart, isize, isize, 20,
diskdev, partname[part], remain/sizemult, multname);
partsize = NUMSEC(atoi(isize),sizemult, dlcylsize);
if (partsize > 0) {
if (remain - partsize < sizemult)
partsize = remain;
bsdlabel[part].pi_fstype = FS_BSDFFS;
bsdlabel[part].pi_offset = partstart;
bsdlabel[part].pi_size = partsize;
bsdlabel[part].pi_bsize = 8192;
bsdlabel[part].pi_fsize = 1024;
if (part == E)
strcpy(fsmount[E], "/usr");
msg_prompt_add(MSG_mountpoint, fsmount[part],
fsmount[part], 20);
partstart += partsize;
remain -= partsize;
}
part++;
}
break;
}
/*
* OK, we have a partition table. Give the user the chance to
* edit it and verify it's OK, or abort altogether.
*/
if (edit_and_check_label(bsdlabel, maxpart, RAW_PART, RAW_PART) == 0) {
msg_display(MSG_abort);
return 0;
}
/* Disk name */
msg_prompt(MSG_packname, "mydisk", bsddiskname, DISKNAME_SIZE);
/* save label to disk for MI code to update. */
(void) savenewlabel(bsdlabel, 8); /* save 8-partition label */
/* Everything looks OK. */
return (1);
}
/* Upgrade support */
int
md_update(void)
{
endwin();
md_copy_filesystem();
md_post_newfs();
puts(CL); /* XXX */
wclear(stdscr);
wrefresh(stdscr);
return 1;
}
void
md_cleanup_install(void)
{
#ifndef DEBUG
char realfrom[STRSIZE];
char realto[STRSIZE];
char sedcmd[STRSIZE];
strncpy(realfrom, target_expand("/etc/rc.conf"), STRSIZE);
strncpy(realto, target_expand("/etc/rc.conf.install"), STRSIZE);
sprintf(sedcmd, "sed 's/rc_configured=NO/rc_configured=YES/' < %s > %s",
realfrom, realto);
if (logging)
(void)fprintf(log, "%s\n", sedcmd);
if (scripting)
(void)fprintf(script, "%s\n", sedcmd);
do_system(sedcmd);
run_prog(1, 0, NULL, "mv -f %s %s", realto, realfrom);
run_prog(0, 0, NULL, "rm -f %s", target_expand("/sysinst"));
run_prog(0, 0, NULL, "rm -f %s", target_expand("/.termcap"));
run_prog(0, 0, NULL, "rm -f %s", target_expand("/.profile"));
#endif
}
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