# !/bin/bash
# Script to test build using qemu x86 emulator.

set -e

OUTDIR=$1

if [ -z "${OUTDIR}" ]; then
    OUTDIR=/minimal-linux
    echo "No outdir specified, using ${OUTDIR}"
fi

KERNEL_IMAGE=${OUTDIR}/linux-stable/arch/x86/boot/bzImage
INITRD_IMAGE=${OUTDIR}/initramfs.cpio.gz

if [ ! -e ${KERNEL_IMAGE} ]; then
    echo "Missing kernel image at ${KERNEL_IMAGE}"
    exit 1
fi
if [ ! -e ${INITRD_IMAGE} ]; then
    echo "Missing initrd image at ${INITRD_IMAGE}"
    exit 1
fi


echo "Booting the kernel"
# See trick at https://superuser.com/a/1412150 to route serial port output to file
qemu-system-x86_64 \
        -m 256M \
        -M pc \
        -cpu qemu64 \
        -nographic \
        -smp 1 \
        -kernel ${KERNEL_IMAGE} \
        -chardev stdio,id=char0,mux=on,logfile=${OUTDIR}/serial.log,signal=off \
        -serial chardev:char0 -mon chardev=char0 \
        -append "rdinit=/home/autorun-qemu.sh console=ttyAMA0" -initrd ${INITRD_IMAGE}