##################################################################
# Script:  disk_launch
# Purpose: Launch an installed Slackware ARM host via QEMU
# Author:  Stuart Winter <mozes@slackware.com>
# Date:    28-May-2020
# Version: 1.03
##################################################################

# Select your root filesystem's format.
# By default Slackware uses 'ext4', but if you chose another, you
# need to uncomment it and comment out the others.
#
ROOTFSTYPE=ext4
#ROOTFSTYPE=ext3
#ROOTFSTYPE=ext2
#ROOTFSTYPE=xfs
#ROOTFSTYPE=reiserfs
#ROOTFSTYPE=jfs  ## Don't choose this one! see installation notes
#
# Select your root filesystem device.
ROOTFSDEV=/dev/vda2

# You'll see the console output in the terminal window from which
# you run qemu.
VISUALOUTPUT="-nographic"
KAPPEND="console=ttyAMA0,115200n8"

# Select your keyboard - this gets overridden by the OS when you
# choose your keymap, so it's not prudent to change it unless you
# have a non-standard keyboard such as a Mac (according to qemu(1)).
# If there is a problem when booting the OS, and you are dropped to
# a rescue shell, this may also be another reason to have a correct
# key mapping. 
#
# The best advise is that if you find that your keyboard is going
# crazy in QEMU, please set it to one in the list below ;-)
#
# The available keyboard options are:
#
# ar  de-ch  es  fo     fr-ca  hu  ja  mk     no  pt-br  sv
# da  en-gb  et  fr     fr-ch  is  lt  nl     pl  ru     th
# de  en-us  fi  fr-be  hr     it  lv  nl-be  pt  sl     tr
#
KEYBOARD="en-gb"

# Use NAT for networking.  This is the most simple option.
NETTYPE="-net nic -net user,restrict=n"

# Load the 'tunnel' interface module:
modprobe tun

# Run qemu:
qemu-system-arm $VISUALOUTPUT $NETTYPE \
   -m 1024 \
   -M vexpress-a9 \
   -smp $( nproc ) \
   -k $KEYBOARD \
   -rtc base=localtime \
   -no-reboot \
   -drive if=none,file=hda.qcow2,format=qcow2,id=hd \
   -device virtio-blk-device,drive=hd \
   -dtb dtb/vexpress-v2p-ca9.dtb \
   -initrd initrd-armv7 \
   -kernel zImage-armv7 \
   -append "$KAPPEND nofont root=$ROOTFSDEV rootfstype=$ROOTFSTYPE"