mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-13 20:12:26 +00:00
138 lines
3.7 KiB
Bash
Executable File
138 lines
3.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -eu
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arch=x86_64
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configure=true
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config_fragments=buildroot_config_fragment
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extra_make_args=''
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gem5=false
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j="$(($(nproc) - 2))"
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post_script_args=''
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qemu_sdl='--enable-sdl --with-sdlabi=2.0'
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v=0
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while getopts 'a:Cgj:i:klp:qS:v' OPT; do
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case "$OPT" in
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a)
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arch="$OPTARG"
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;;
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C)
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configure=false
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;;
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g)
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gem5=true
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;;
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j)
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j="$OPTARG"
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;;
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i)
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config_fragments="$config_fragments $OPTARG"
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;;
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k)
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extra_make_args="$extra_make_args kernel_module-reconfigure"
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;;
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l)
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extra_make_args="$extra_make_args linux-reconfigure"
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;;
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p)
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post_script_args="$OPTARG"
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;;
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q)
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extra_make_args="$extra_make_args host-qemu-reconfigure"
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;;
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S)
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qemu_sdl=''
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;;
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v)
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v=1
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;;
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esac
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done
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shift $(($OPTIND - 1))
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extra_make_args="$extra_make_args $@"
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case "$arch" in
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x86_64)
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defconfig=qemu_x86_64_defconfig
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;;
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arm)
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defconfig=qemu_arm_versatile_defconfig
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;;
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aarch64)
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defconfig=qemu_aarch64_virt_defconfig
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;;
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mips64)
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defconfig=qemu_mips64r6_malta_defconfig
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;;
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esac
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arch_dir="$arch"
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if "$gem5"; then
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arch_dir="${arch}-gem5"
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# Networking was not working, so disable it to speed things up.
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post_script_args="$post_script_args -n"
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else
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config_fragments="$config_fragments buildroot_config_fragment_qemu"
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fi
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root_dir="$(pwd)"
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buildroot_dir="${root_dir}/buildroot"
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out_dir="${buildroot_dir}/output.${arch_dir}~"
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config_file="${out_dir}/.config"
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if "$configure"; then
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cd "${buildroot_dir}"
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for p in $(find "${root_dir}/buildroot_patches/" -maxdepth 1 -name '*.patch' -print); do
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patch -N -r - -p 1 <"$p" || :
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done
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make O="$out_dir" BR2_EXTERNAL="${root_dir}/kernel_module:${root_dir}/gem5:${root_dir}/parsec-benchmark" "$defconfig"
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# TODO Can't get rid of these for now.
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# http://stackoverflow.com/questions/44078245/is-it-possible-to-use-config-fragments-with-buildroots-config
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for config_fragment in $config_fragments; do
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cat "../$config_fragment" >> "${config_file}"
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done
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printf "
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BR2_JLEVEL=$j
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BR2_ROOTFS_POST_SCRIPT_ARGS=\"$post_script_args\"
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" >> "${config_file}"
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if "$gem5"; then
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printf "\
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BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE=\"../kernel_config_${arch_dir}\"
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BR2_PACKAGE_GEM5=y
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" >> "${config_file}"
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else
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printf "\
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BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES=\"../kernel_config_fragment\"
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" >> "${config_file}"
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fi
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if [ "$arch" = 'mips64' ]; then
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# Workaround for:
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# http://lists.busybox.net/pipermail/buildroot/2017-August/201053.html
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sed -Ei 's/^BR2_PACKAGE_LINUX_TOOLS_GPIO/BR2_PACKAGE_LINUX_TOOLS_GPIO=n/' "${config_file}"
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fi
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make O="$out_dir" olddefconfig
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fi
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cd "${root_dir}/kernel_module"
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./make-host.sh -j "$j" clean
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cd "${buildroot_dir}"
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# HOST_QEMU_OPTS is a hack that happens to work because the QEMU package luckly uses += at all times.
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# It shouldn't be necessary in the first place: https://bugs.busybox.net/show_bug.cgi?id=9936
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#
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# Even if were an autotools package, there is no general way currently to pass extra configs to it:
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# https://stackoverflow.com/questions/44341188/how-to-pass-extra-custom-configure-autotools-options-to-a-buildroot-package/44341225#44341225
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#
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# BR2_ options may be given on the command line here, and they do have direct "define" effects.
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# But this is generally bad, as it skips the Kconfig mechanism, e.g. it does not set defaults properly.
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cmd="time \
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env \
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-u LD_LIBRARY_PATH \
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make \
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O='$out_dir' \
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HOST_QEMU_OPTS='--enable-debug --extra-cflags=-DDEBUG_PL061=1 --enable-trace-backends=simple $qemu_sdl' \
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V='$v' \
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$extra_make_args \
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all \
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"
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echo "$cmd" | tee "${root_dir}/build.log"
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eval "$cmd"
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if "$gem5"; then
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cd "${root_dir}"
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./build-gem5 -a "$arch"
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fi
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