Readme.4QEMU

This is the readme file for QEMU platform

After you do ./estuary/build.sh -p QEMU -d Ubuntu, all targets files will be produced into <project root>/build/QEMU directory, they are: UEFI, grub and dtb files are not necessary for QEMU platform

Image

descriptions: Image is the kernel executable program.
target: <project root>/build/QEMU/kernel/arch/arm64/boot/Image
source: <project root>/kernel
Note: Before compiling kernel, gcc-linaro-aarch64-linux-gnu-4.9-2014.09_linux(https://github.com/open-estuary/estuary/blob/master/doc/Toolchains_Guide.4All.md) and libssl-dev should be installed first.

build commands(supposedly, you are in <project root>currently):

build_dir=build
KERNEL_DIR=kernel
mkdir -p $build_dir/QEMU/$KERNEL_DIR 2>/dev/null
kernel_dir=$build_dir/QEMU/$KERNEL_DIR
KERNEL_BIN=$kernel_dir/arch/arm64/boot/Image
CFG_FILE=defconfig
DTB_BIN=
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-

pushd $KERNEL_DIR/

git clean -fdx
git reset --hard
sudo rm -rf ../$kernel_dir/*
make O=../$kernel_dir mrproper

./scripts/kconfig/merge_config.sh -O ../$kernel_dir -m arch/arm64/configs/defconfig \
arch/arm64/configs/distro.config arch/arm64/configs/estuary_defconfig arch/arm64/configs/qemu_defconfig
mv -f ../$kernel_dir/.config ../$kernel_dir/.merged.config
make O=../$kernel_dir KCONFIG_ALLCONFIG=../$kernel_dir/.merged.config alldefconfig

make O=../$kernel_dir -j${corenum} ${KERNEL_BIN##*/}

dtb_dir=${DTB_BIN#*arch/}
dtb_dir=${DTB_BIN%/*}
dtb_dir=../${kernel_dir}/arch/${dtb_dir}

mkdir -p $dtb_dir 2>/dev/null

make O=../$kernel_dir ${DTB_BIN#*/boot/dts/}

qemu-system-aarch64

descriptions: qemu-system-aarch64 is the QEMU executable program.
target: <project root>/build/qemu/bin/qemu-system-aarch64
source: <project root>/qemu
build commands(supposedly, you are in currently):

sudo apt-get install -y gcc zlib1g-dev libperl-dev libgtk2.0-dev libfdt-dev

pushd qemu
./configure --prefix="/home/user/qemubuild" --target-list=aarch64-softmmu
make -j14
make install
popd

/home/user/qemubuild/qemu-system-aarch64 -machine virt -cpu cortex-a57 \
    -kernel <project root>/build/QEMU/binary/Image_QEMU \
    -drive if=none,file=<distribution image>,id=fs \
    -device virtio-blk-device,drive=fs \
    -append "console=ttyAMA0 root=/dev/vda rw" \
    -nographic

More detail about distributions, please refer to Distributions_Guide.md.
More detail about toolchains, please refer to Toolchains_Guide.md.
More detail about how to debug, analyse, diagnose system, please refer to Armor_Manual.md.
More detail about how to benchmark system, please refer to Caliper_Manual.md.