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citadel/scripts/qemu-boot

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#!/bin/bash
# build/tmp-glibc/work/x86_64-linux/qemu-helper-native/1.0-r1/recipe-sysroot-native/usr/bin/qemu-system-x86_64
SCRIPT=$(realpath ${BASH_SOURCE})
BUILD_ROOT=$(realpath $(dirname ${SCRIPT})/../build)
SYSROOT=${BUILD_ROOT}/tmp-glibc/work/x86_64-linux/qemu-helper-native/1.0-r1/recipe-sysroot-native
QEMU=${SYSROOT}/usr/bin/qemu-system-x86_64
if [[ ! -f ${QEMU} ]]; then
>&2 printf "Qemu binary not found at: ${QEMU}\n"
exit 1
fi
ENABLE_KVM="--enable-kvm -cpu host"
if [[ ! -c "/dev/kvm" ]]; then
printf "Disabling KVM because /dev/kvm is not available\n"
ENABLE_KVM=""
fi
EFI_BIOS="-bios /usr/share/qemu/OVMF.fd"
if [[ ! -f "/usr/share/qemu/OVMF.fd" ]]; then
printf "Disabling EFI boot because OVMF.fd not found in /usr/share/qemu\n"
EFI_BIOS=""
fi
usage() {
cat <<-EOF
USAGE: qemu-boot [options] installer Boot build/images/citadel-installer.img
qemu-boot [options] kernel Boot build/images/bzImage
OPTIONS
--no-efi Do not use OVMF UEFI bios
--memory size Set custom guest RAM size
To exit kernel boot type 'ctrl-a x' (See escape sequences in qemu-system man page)
EOF
exit 0
}
BOOT_TARGET=""
MEMORY_ARG="-m 4G"
while [[ $# -gt 0 ]]; do
key=${1}
case $key in
--no-efi)
EFI_BIOS=""
shift
;;
--memory)
MEMORY_ARG="-m ${2}"
shift
shift
;;
kernel)
BOOT_TARGET="kernel"
shift
;;
installer)
BOOT_TARGET="installer"
shift
;;
--help)
usage
;;
*)
printf "Unknown option ${key}\n"
usage
;;
esac
done
boot_installer() {
${QEMU} \
${ENABLE_KVM} \
${EFI_BIOS} \
${MEMORY_ARG} \
-vga virtio \
-usb -device usb-tablet,id=input0 \
-drive format=raw,file=${BUILD_ROOT}/images/citadel-installer.img \
-net none \
-smp 2
}
boot_kernel() {
echo "kernel"
${QEMU} \
${ENABLE_KVM} \
${MEMORY_ARG} \
-nographic \
-smp 2 \
-append "rd.emergency console=ttyS0 earlyprintk=ttyS0" \
-kernel ${BUILD_ROOT}/images/bzImage
}
if [[ ${BOOT_TARGET} = "kernel" ]]; then
boot_kernel
elif [[ ${BOOT_TARGET} = "installer" ]]; then
boot_installer
else
usage
fi