Dualbooting Pdaxii & Openbsd, It (kinda) works! Options

[ZDevil]

After exploring for a while with dinorex, i've succeeded in setting up a dualbooting environment for pdaXii (5.4.8 Sally on NAND) and OpenBSD 4.2 beta (on my internal Extreme III 16GB CF):

Here is how it plays:
(Sorry for the poor quality of the pics )

1. First load the pdaXii (5.4.8) kernel. Then answer the question if i want to boot into OpenBSD or pdaX.




2. Booting up pdaX. Everything is fine.




3. After reboot, choose OpenBSD this time. There is a warning message, but again everything is fine. OpenBSD 4.2 starts to boot ...




4. OpenBSD 4.2 underway




5. Mission accomplished!

[ZDevil]

[UPDATED]

Dualbooting pdaXii & OpenBSD: a mini how-to (for C3100/3200 only; do it at your own risk)

*******************************************************************************
To set up a dualboot environment of pdaXii and OpenBSD, you have to do three things:

1. Flash pdaXii (in the usual flash "OK mode") & OpenBSD (in the emergency "D+B mode")
2. Modify /etc/rc.d/rc.rofilesys in pdaXii
3. Create a directory to hold the OpenBSD bootloader and kernel.

*******************************************************************************

1. (I suppose you know how to do this. If not, you'd better stop here for your safety.)

2. Modify /etc/rc.d/rc.rofilesys in pdaXii
This is how I change the /etc/rc.d/rc.rofilesys in pdaXii (5.4.8)
(This also seems to work for other pre-Beta4 builds which uses the older bootloader, including Beta1 and Beta3, but YMMV):

#!/bin/sh

export PATH=$PATH:/usr/bin:/bin:/sbin

get_dev_pcmcia()
{
while read SOCKET CLASS DRIVER INSTANCE DEVS MAJOR MINOR;
do
    echo $DEVS
done
}
get_dev_pcmcia_slot()
{
    grep "^$1" /var/lib/pcmcia/stab | get_dev_pcmcia
}

RW_MTD_LINE=`cat /proc/mtd | grep "home" | tail -n 1`
if [ "$RW_MTD_LINE" = "" ]; then
    RW_MTD_LINE=`cat /proc/mtd | grep "\<NAND\>.*\<2\>" | tail -n 1`
fi
if [ "$RW_MTD_LINE" = "" ]; then
    RW_MTD=""
    RW_MTDBLK=""
    RW_MTD_SIZE=0
else
    RW_MTD_NO=`echo $RW_MTD_LINE | cut -d: -f1 | cut -dd -f2`
    RW_MTD_SIZE_HEX=`echo $RW_MTD_LINE | cut -d" " -f2`

    if [ -x /sbin/devfsd ]; then
        RW_MTD=/dev/mtd/$RW_MTD_NO
        RW_MTDBLK=/dev/mtdblock/$RW_MTD_NO
    else
        RW_MTD=/dev/mtd$RW_MTD_NO
        RW_MTDBLK=/dev/mtdblock$RW_MTD_NO
    fi

    RW_MTD_SIZE=`dc 0x$RW_MTD_SIZE_HEX 1024 / p`
    initlog -s $"found $RW_MTD ${RW_MTD_SIZE}\"Kbyte\""
fi

if [ "$ZAURUS_RESET" = "HARD" ]; then

if [ ! -x /sbin/devfsd ]; then
    mount -t tmpfs -o size=12m none /dev
    cd /
    tar xf /root/.dev_default.tar 2> /dev/null > /dev/null
    mkdir /dev/shm
else
    mount -t tmpfs -o size=12m none /dev/shm
fi

STRING=$"Starting filesystem: "
msg -n $STRING

mount -o remount / 2> /dev/null > /dev/null

if [ $RW_MTD_SIZE -ne 0 ]; then
    /sbin/eraseall --j --q $RW_MTD 2> /dev/null > /dev/null
    mount -t jffs2 -o rw,noatime $RW_MTDBLK /home 2> /dev/null > /dev/null
    mkdir /home/root
    cd /
    tar --no-same-owner -xf /root/.home_default.tar 2> /dev/null > /dev/null
fi

#OpenBSD Boot
if [ /bsd ]; then
        echo "Would you like to boot OpenBSD or pdaXrom (openbsd/pdaxrom)?"
        read acceptance
        if [ "$acceptance" != "pdaxrom" ]; then
                echo "Booting OpenBSD"
                cardmgr -o >/dev/null 2>&1    #<-- This line is necessary, or the bootloader won't be able to find /bsd on the internal CF/MD.#
                cd /bsd
                /sbin/insmod /bsd/zbsdmod.o
                ./zboot
        fi
        echo "Booting pdaXrom"
fi

mkdir /dev/shm/tmp
mkdir /dev/shm/run
chmod 4777 /var/tmp
chmod 777 /tmp
touch /var/run/utmp
cd /
tar --no-same-owner -xf /root/.var_default.tar 2> /dev/null > /dev/null
touch /var/log/lastlog

rc=$?
if [ "$rc" = "0" ]; then
    success "$STRING"
else
    failure "$STRING"
fi
msg

else
### SW Reset !
......
......

Probably this is just a quick and dirty trick. I suppose there is a better way of doing that.
Anyway here is the full script.
USE IT AT YOUR OWN RISK! DON'T BLAME ME IF IT BRICKS YOUR BUDDY Z.

Two small notes:
-- In case OpenBSD fails to load for some reason, in the bootloader prompt (i.e., boot>), simply type reboot and the system will boot into pdaX.
-- You don't actually have to type "openbsd" to answer the boot question. Just a [ENTER] will do.


3. Create a directory to hold the OpenBSD bootloader and kernel.
-- Create a new directory under pdaXii:

CODE

  mkdir /bsd

-- Copy zboot and zbsdmod.o into this directory:

CODE

   cd /WHEREEVER/YOUR/OBSD/FILES/ARE
   cp zboot zbsdmod.o /bsd

Reboot. And then you'll see your glutton dog enjoy both penguin and puffyfish meat ...

This post has been edited by ZDevil: Aug 15 2007, 07:24 PM

Attached File(s)

 rc.rofilesys.txt ( 5.61K ) Number of downloads: 31