152 lines
3.7 KiB
Bash
152 lines
3.7 KiB
Bash
#!/bin/bash
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print_usage() {
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echo "Usage: $(basename $0) [options]"
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echo -e "Builds QEMU and Linux kernel from source.\n"
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echo -e " --help\t\t\tDisplay this information."
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echo -e " --kernel {arm|arm64}\t\tBuild Linux kernel for the architecture."
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echo -e " --qemu\t\t\tBuild QEMU from source."
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echo -e " --clean\t\t\tRemove qemu.git and linux.git directories in current directory."
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exit "$1"
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}
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update_repositories() {
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echo -e "\nUpdating apt repositories. "
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echo -e "\nPress 'y' to continue or any other key to exit..."
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read -s -n 1 user_input
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if [[ $user_input == 'Y' ]] || [[ $user_input == 'y' ]]; then
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sudo apt update
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else
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exit
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fi
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}
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check_dir_exists() {
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user_input=
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if [ -d "$1" ]; then
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echo -e "\n$1 already exists in working directory and will not be updated."
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echo -e "\nPress 'y' to continue or any other key to exit..."
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read -s -n 1 user_input
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if [[ $user_input != 'Y' ]] && [[ $user_input != 'y' ]]; then
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exit
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fi
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fi
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}
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invalid_arg() {
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echo "ERROR: Unrecognized argument: $1" >&2
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print_usage 1
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}
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build_qemu() {
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echo "Installing QEMU build dependencies ..."
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sudo apt install git python3-dev libsdl1.2-dev build-essential libpixman-1-dev
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# Checkout source code
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check_dir_exists "qemu.git"
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if [ ! -d "qemu.git" ]; then
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git clone --depth 1 git://git.qemu.org/qemu.git qemu.git
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fi
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cd qemu.git
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# We are going to build QEMU Arm and AArch64 system mode emulation.
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# ./configure --help emits a list of other possible targets supported by QEMU.
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./configure --target-list=arm-softmmu,aarch64-softmmu
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make -j`getconf _NPROCESSORS_ONLN`
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}
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build_linux() {
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echo "Installing Linux kernel build dependencies ..."
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sudo apt install git bison flex build-essential libssl-dev bc
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check_dir_exists "linux.git"
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if [ ! -d "linux.git" ]; then
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git clone --depth 1 \
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https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git linux.git
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fi
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cd linux.git
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make mrproper
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if [[ "$1" == "arm" ]]; then
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echo "Installing gcc-arm-linux-gnueabihf ..."
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sudo apt install gcc-arm-linux-gnueabihf
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# Configure kernel_branch=master arch=arm config=vexpress_defconfig
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make O=../linux.build/arm ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- \
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vexpress_defconfig
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# Trigger Arm kernel build
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make -j`getconf _NPROCESSORS_ONLN` O=../linux.build/arm ARCH=arm \
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CROSS_COMPILE=arm-linux-gnueabihf-
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elif [[ "$1" == "arm64" ]]; then
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echo "Installing gcc-aarch64-linux-gnu ..."
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sudo apt install gcc-aarch64-linux-gnu
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# Configure kernel_branch=master arch=arm64 config=defconfig
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make O=../linux.build/arm64 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- \
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defconfig
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# Trigger AArch64 kernel build
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make -j`getconf _NPROCESSORS_ONLN` O=../linux.build/arm64 ARCH=arm64 \
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CROSS_COMPILE=aarch64-linux-gnu-
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else
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echo "ERROR: Unrecognized architecture: $1" >&2
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print_usage 1
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exit
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fi
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}
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clean() {
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if [ -d "linux.git" ]; then
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echo "Removing linux.git ..."
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rm -rf linux.git
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fi
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if [ -d "linux.build" ]; then
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echo "Removing linux.build ..."
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rm -rf linux.build
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fi
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if [ -d "qemu.git" ]; then
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echo "Removing qemu.git ..."
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rm -rf qemu.git
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fi
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exit
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}
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# Parse options
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while [[ $# -gt 0 ]]; do
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case "${END_OF_OPT}${1}" in
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-h|--help) print_usage 0 ;;
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-k|--kernel)
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if [ "$2" == "arm64" ] || [ "$2" == "arm" ]; then
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KERNEL_ARCH=$2
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else
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invalid_arg "$2"
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fi
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shift;;
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-q|--qemu)
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QEMU=1;;
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-c|--clean) clean ;;
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*) invalid_arg "$1" ;;
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esac
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shift
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done
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update_repositories
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if [ "$KERNEL_ARCH" != "" ]; then
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pushd .
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build_linux $KERNEL_ARCH
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popd
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fi
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if [[ $QEMU -eq 1 ]]; then
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pushd .
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build_qemu
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popd
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fi
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