generate a bootable linux image for 68k using emile

emile-68k-qemu.sh

#!/bin/bash
PART_NAME="linux"
IMG_NAME="emile.img"
PART_SIZE=$((1024*1024*1000))
BS=$((1024*1024))

# HD0-OpenRetroSCSI-7.5.3.hda
# https://mega.nz/folder/8hA3AQCJ#pWUq92L70yDXlogy9lk5Dg/file/hkIxnQ4S
#mv HD0-OpenRetroSCSI-7.5.3.hda MacOS.img
cp MacOS.img "$IMG_NAME"
dd if=/dev/zero of="$IMG_NAME" conv=notrunc oflag=sync,append status=progress bs="$BS" count=$(( PART_SIZE / BS ))

START_SEC=$(partx -ro START "$IMG_NAME"  | sort -n | tail -n1)
LAST_SEC=$((START_SEC - 1))
END_SEC=$((LAST_SEC + ( PART_SIZE ) / 512))

dd if="$IMG_NAME" of="$IMG_NAME".tmp bs=512 count=1
parted -s "$IMG_NAME" mkpart "$PART_NAME" ext4 "$START_SEC"s "$END_SEC"s
dd if="$IMG_NAME".tmp of="$IMG_NAME" bs=512 count=1 conv=notrunc oflag=sync
rm "$IMG_NAME".tmp

PART_NUM=$(partx "$IMG_NAME" -o NR,NAME | sed -nr "s/([0-9]+) $PART_NAME/\1/p")
PART_NUM=$((PART_NUM + 0))

LOOP_DEV=$(losetup -f)
ROOT_PART="$LOOP_DEV"p"$PART_NUM"

losetup -P "$LOOP_DEV" "$IMG_NAME"
sudo mke2fs "$ROOT_PART"
mkdir -p rootfs
sudo mount "$ROOT_PART" rootfs
sudo debootstrap --no-check-gpg --arch=m68k --foreign --variant=minbase --components=main,non-free --include=nano,linux-image-m68k,systemd-sysv,emile --extra-suites=unreleased sid rootfs https://deb.debian.org/debian-ports/
sudo cp "$(which qemu-m68k-static)" rootfs/usr/bin/
cat << EOF > setup.sh
#!/bin/bash
/debootstrap/debootstrap --second-stage

cat << EOT >> etc/initramfs-tools/modules
mac_esp
esp_scsi
sd_mod
EOT

update-initramfs -u -k all
EOF

chmod +x setup.sh
sudo mv setup.sh rootfs/

sudo chroot rootfs/ /usr/bin/qemu-m68k-static /bin/bash /setup.sh

cat << EOF > emile.conf
partition       /dev/sda3
first_level     /boot/emile/first_scsi
second_level    /boot/emile/second_scsi

timeout         5
default         0

title           Debian GNU/Linux
root            ext2:(sd0,3)
kernel          /vmlinuz
initrd          /initrd.img
args            root=/dev/sda4 rw rootwait earlyprintk console=ttyS0 console=tty0 fbcon=font:ProFont6x11 ignore_loglevel printk.time=1
EOF
sudo mv emile.conf rootfs/boot/emile/

cat << EOF > setup.sh
#!/bin/bash
emile --backup
emile

sync
poweroff -f
EOF
chmod +x setup.sh
sudo mv setup.sh rootfs/

cp rootfs/vmlinuz .
cp rootfs/initrd.img .

sudo umount rootfs
losetup -D "$LOOP_DEV"
rmdir rootfs

dd if=/dev/zero of=pram.img bs=512 count=1

qemu-system-m68k -M q800  -m 1000M -net nic,model=dp83932 -net user -nographic -append "root=/dev/sda4 rw console=ttyS0 init=/setup.sh" -kernel vmlinuz -initrd initrd.img -drive file="$IMG_NAME",format=raw

exit

# https://www.macintoshrepository.org/7038-all-macintosh-roms-68k-ppc- Old_World_Mac_Roms.zip
# shellcheck disable=SC2317
qemu-system-m68k \
-M q800 \
-bios Quadra800.rom \
-m 128 \
-display gtk \
-device scsi-hd,scsi-id=0,drive=hd1 \
-drive file=pram.img,format=raw,if=mtd \
-drive file=emile.img,media=disk,format=raw,if=none,id=hd1