3rd-party/linux-kernel-module-cheat
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GEM5 checkpoint

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Add gem5 as buildroot package to cross compile m5.

Add gem5 as a submodule.

Split gem5 from arch on CLI with "-a arm -g" instead of "-a arm-gem5".
This commit is contained in:
Ciro Santilli
2018-02-21 00:44:17 +00:00
parent 0c2bd829d4
commit 9e5173f324
11 changed files with 133 additions and 54 deletions
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45
build
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@@ -2,16 +2,20 @@
set -e
arch=x86_64
extra_targets=''
qemu_sdl='--enable-sdl --with-sdlabi=2.0'
gem5=false
j="$(($(nproc) - 2))"
post_script_args=''
qemu_sdl='--enable-sdl --with-sdlabi=2.0'
x11=false
v=0
while getopts 'a:j:lp:qSt:v' OPT; do
while getopts 'a:gj:lp:qSt:v' OPT; do
case "$OPT" in
a)
arch="$OPTARG"
;;
g)
gem5=true
;;
j)
j="$OPTARG"
;;
@@ -43,19 +47,17 @@ case "$arch" in
x86_64)
defconfig=qemu_x86_64_defconfig
;;
x86_64-gem5)
defconfig=qemu_x86_64_defconfig
;;
arm)
# qemu_arm_vexpress_defconfig required a newer QEMU than 2.0.0 on a Ubuntu host.
# so let's stick to versatile for now.
defconfig=qemu_arm_versatile_defconfig
;;
arm-gem5)
# Ideally we should use a custom clean config here.
# But let's just use this one as a starting point for now.
defconfig=qemu_arm_versatile_defconfig
post_script_args="$post_script_args -n"
if "$gem5"; then
# Ideally we should use a custom clean config here.
# But let's just use this one as a starting point for now.
defconfig=qemu_arm_versatile_defconfig
post_script_args="$post_script_args -n"
else
# qemu_arm_vexpress_defconfig required a newer QEMU than 2.0.0 on a Ubuntu host.
# so let's stick to versatile for now.
defconfig=qemu_arm_versatile_defconfig
fi
;;
aarch64)
defconfig=qemu_aarch64_virt_defconfig
@@ -64,6 +66,10 @@ case "$arch" in
defconfig=qemu_mips64r6_malta_defconfig
;;
esac
arch_dir="$arch"
if "$gem5"; then
arch_dir="${arch}-gem5"
fi
cd kernel_module
./make-host.sh -j "$j" clean
@@ -71,14 +77,14 @@ cd ../buildroot
for p in $(find '../buildroot_patches/' -maxdepth 1 -name '*.patch' -print); do
patch -N -r - -p 1 <"$p" || :
done
outdir="output.${arch}~"
make O="$outdir" BR2_EXTERNAL="$(pwd)/../kernel_module" "$defconfig"
outdir="output.${arch_dir}~"
make O="$outdir" BR2_EXTERNAL="$(pwd)/../kernel_module:$(pwd)/../gem5" "$defconfig"
# TODO Can't get rid of this for now.
# http://stackoverflow.com/questions/44078245/is-it-possible-to-use-config-fragments-with-buildroots-config
cat ../buildroot_config_fragment >> "${outdir}/.config"
if echo "$arch" | grep -Eq -- '-gem5$'; then
if "$gem5"; then
echo "\
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE=\"../kernel_config_${arch}\"
BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE=\"../kernel_config_${arch_dir}\"
" >> "${outdir}/.config"
else
echo "\
@@ -105,6 +111,7 @@ time \
make \
O="$outdir" \
BR2_JLEVEL="$j" \
BR2_PACKAGE_GEM5="$("$gem5" && echo y || echo n)" \
BR2_ROOTFS_POST_SCRIPT_ARGS="$post_script_args" \
HOST_QEMU_OPTS="--enable-debug --extra-cflags='-DDEBUG_PL061=1' --enable-trace-backends=simple $qemu_sdl" \
V="$v" \
@@ -113,6 +120,6 @@ time \
all \
;
cd ..
if echo "$arch" | grep -Eq -- '-gem5$'; then
if "$gem5"; then
./build-gem5 -a "$arch"
fi