diff options
Diffstat (limited to 'bin')
| -rwxr-xr-x | bin/run-riscv-qemu.sh | 130 |
1 files changed, 83 insertions, 47 deletions
diff --git a/bin/run-riscv-qemu.sh b/bin/run-riscv-qemu.sh index 5098beb..77bf808 100755 --- a/bin/run-riscv-qemu.sh +++ b/bin/run-riscv-qemu.sh @@ -1,40 +1,21 @@ #!/usr/bin/env bash -set -e +set -ex -# Enfore BUSYBOX_SRC and QEMU_KERNEL. -if [ -z "$BUSYBOX_SRC" ]; then - echo "run-riscv-qemu (error): you need to define BUSYBOX_SRC." - exit 1 -fi - -# If the $QEMU_KERNEL environment variable is not explicitely set, then guess -# one based on the current working directory. -if [ -z "$QEMU_KERNEL" ]; then - if [ ! -z "$ARCH" ]; then - if [ -f "arch/$ARCH/boot/Image" ]; then - QEMU_KERNEL=$(realpath "arch/$ARCH/boot/Image") - else - echo "run-riscv-qemu (error): you need to define QEMU_KERNEL with the Image to be used." +EXTRA="" +KERNEL="" +DISK="" +while [[ $# -gt 0 ]]; do + case $1 in + -d | --disk) + if [ -z "$2" ]; then + echo "run-riscv-qemu (error): you have to provide a value for -d/--disk" exit 1 fi - echo "run-riscv-qemu (info): using '$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 -# Configurable variables. -QEMU_CPU=${QEMU_CPU:-max} -QEMU_SMP=${QEMU_SMP:-4} -EXTRA=${EXTRA:-} - -# Cleanup older environments. -rm -rf "$BUSYBOX_SRC/initramfs/home" - -while [[ $# -gt 0 ]]; do - case $1 in + DISK="$2" + shift 2 + ;; -g | --gdb) EXTRA="-s -S" shift @@ -43,14 +24,26 @@ while [[ $# -gt 0 ]]; do 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 '$1'." exit 1 ;; *) - mkdir -p "$BUSYBOX_SRC/initramfs/home/$(whoami)" - cp "$1" "$BUSYBOX_SRC/initramfs/home/$(whoami)/" - shift # past argument + if [ ! -z "$BUSYBOX_SRC" ]; then + mkdir -p "$BUSYBOX_SRC/initramfs/home/$(whoami)" + cp "$1" "$BUSYBOX_SRC/initramfs/home/$(whoami)/" + fi + + shift ;; esac done @@ -58,24 +51,67 @@ done # Print the show message if needed. if [ -n "$SHOW_HELP" ]; then cat <<HERE -usage: run-riscv-qemu.sh [OPTIONS] +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. - -g, --gdb Wait for a GDB connection. - -h, --help Show this message. +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 '$QEMU_KERNEL' as the Linux kernel Image." + else + echo "run-riscv-qemu (error): you need to define QEMU_KERNEL with the Image to be used." + exit 1 + fi +fi -Environment variables that can be used the further configure the run: +## +# If the user provided a disk option, run QEMU with that disk in mind. + +if [ ! -z "$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 \ + $EXTRA - - EXTRA: extra arguments to pass. Default: (empty). - - QEMU_CPU: CPU model to use (i.e. argument for '-cpu'). Default: 'max'. - - QEMU_SMP: number of cores (i.e. argument for '-smp'). Default: 4. -HERE exit 0 fi ## -# Generate the initramfs. +# No disk provided, let's generate an initramfs of our own run run in /dev/ram +# with a tmpfs. + +# Enfore BUSYBOX_SRC. +if [ -z "$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 @@ -87,10 +123,10 @@ popd set -x qemu-system-riscv64 -machine virt -nographic \ - -cpu "$QEMU_CPU" \ - -m 8G \ - -smp "$QEMU_SMP" \ - -kernel "$QEMU_KERNEL" \ + -cpu max -m 8G -smp 4 \ + -device virtio-net-device,netdev=usernet \ + -netdev user,id=usernet,hostfwd=tcp::22222-:22 \ + -kernel "$KERNEL" \ -initrd "$BUSYBOX_SRC/initramfs.cpio.gz" \ -append "root=/dev/ram" \ -append nokaslr \ |