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|
#!/usr/bin/env bash
set -ex
EXTRA=""
KERNEL=""
DISK=""
while [[ $# -gt 0 ]]; do
case $1 in
-d | --disk)
if [ -z "$2" ]; then
echo "run-riscv-qemu (error): you have to provide a value for -d/--disk"
exit 1
fi
DISK="$2"
shift 2
;;
-g | --gdb)
EXTRA="-s -S"
shift
;;
-h | --help)
SHOW_HELP=1
shift
;;
-k | --kernel)
if [ -z "$2" ]; then
echo "run-riscv-qemu (error): you have to provide a value for -k/--kernel"
exit 1
fi
KERNEL="$2"
shift 2
;;
-*)
echo "run-riscv-qemu (error): unknown option '$1'."
exit 1
;;
*)
if [ ! -z "$BUSYBOX_SRC" ]; then
mkdir -p "$BUSYBOX_SRC/initramfs/home/$(whoami)"
cp "$1" "$BUSYBOX_SRC/initramfs/home/$(whoami)/"
fi
shift
;;
esac
done
# Print the show message if needed.
if [ -n "$SHOW_HELP" ]; then
cat <<HERE
usage: run-riscv-qemu.sh [OPTIONS] [files]
Run QEMU/KVM tailored to my needs for testing the Linux Kernel.
-d, --disk Path to the disk to be passed into QEMU.
-g, --gdb Wait for a GDB connection.
-h, --help Show this message.
-k, --kernel Path to the Linux kernel image to be used.
After the options you can pass paths to files you want to have inside of your
/home directory (unless '-d/--disk' is defined).
HERE
exit 0
fi
# If the $KERNEL argument has not been set, then guess one based on the current
# working directory.
if [ -z "$KERNEL" ]; then
if [ ! -z "$ARCH" ]; then
if [ -f "arch/$ARCH/boot/Image" ]; then
KERNEL=$(realpath "arch/$ARCH/boot/Image")
else
echo "run-riscv-qemu (error): you need to define QEMU_KERNEL with the Image to be used."
exit 1
fi
echo "run-riscv-qemu (info): using '$QEMU_KERNEL' as the Linux kernel Image."
else
echo "run-riscv-qemu (error): you need to define QEMU_KERNEL with the Image to be used."
exit 1
fi
fi
##
# If the user provided a disk option, run QEMU with that disk in mind.
if [ ! -z "$DISK" ]; then
qemu-system-riscv64 -machine virt -nographic \
-cpu max -smp 4 -m 8G \
-drive file="$DISK",format=qcow2,id=hd0 \
-device virtio-net-device,netdev=usernet \
-netdev user,id=usernet,hostfwd=tcp::22222-:22 \
-kernel "$KERNEL" \
-append nokaslr \
-append ftrace_dump_on_oops \
-append sysctl.kernel.panic_on_rcu_stall=1 \
$EXTRA
exit 0
fi
##
# No disk provided, let's generate an initramfs of our own run run in /dev/ram
# with a tmpfs.
# Enfore BUSYBOX_SRC.
if [ -z "$BUSYBOX_SRC" ]; then
echo "run-riscv-qemu (error): you need to define BUSYBOX_SRC."
exit 1
fi
# Cleanup older environments.
rm -rf "$BUSYBOX_SRC/initramfs/home"
pushd "$BUSYBOX_SRC/initramfs"
find . -print0 | cpio --null -o --format=newc | gzip -9 >../initramfs.cpio.gz
popd
##
# Actual run.
set -x
qemu-system-riscv64 -machine virt -nographic \
-cpu max -m 8G -smp 4 \
-device virtio-net-device,netdev=usernet \
-netdev user,id=usernet,hostfwd=tcp::22222-:22 \
-kernel "$KERNEL" \
-initrd "$BUSYBOX_SRC/initramfs.cpio.gz" \
-append "root=/dev/ram" \
-append nokaslr \
-append ftrace_dump_on_oops \
-append sysctl.kernel.panic_on_rcu_stall=1 \
$EXTRA
|
