An experimental runtime based on asychronous components

Currently there are four platforms that sadie test/applications runs on:

• Posix which has been tested on linux
• Versatilpb which is tested using qemu-system-arm with -M versatilepb
• pc_x86_64 which runs on qemu-system-x86_64 and real hardware using Grub bootloader
• pc_x86_32 which runs on qemu-system-i386

All files, unless otherwise indicated, are licensed under the Apache 2.0 license. That and any other licenses are available under the LICENSES directory.

• Meson for building, Tested with 0.27
• binutils-gdb Tested with ToT from git repo
• Gcc Tested with 5.2
• qemu Tested with 2.4.0.1

Get the sources for this project from github. NOTE: this git repo uses submodules so use git clone --recursive

mkdir -p ~/prgs
cd ~/prgs
git clone --recursive https://github.com/winksaville/sadie.git
cd sadie

vendor-install-tools/install.py all

To be able to things like power/perf/apic I needed to enable and configure kvm. If you look at the meson.build for Posix and pc_x86_64 platform you'll see that -enable-kvm and -cpu host is being passed to qemu-system-x86_64.runner.sh. On my Arch Linux system I need to install the kvm, kvm_intel and virtio modules, see.

I'll need to see what happens for testing on circleci!!

To load the modules I added cpupower.conf and kvm-virtio.conf to /etc/modules-load.d:

$ cat /etc/modules-load.d/cpupower.conf
msr
cpuid

$ cat /etc/modules-load.d/kvm-virtio.conf
kvm
kvm_intel
virtio

$ cat /etc/modprobe.d/kvm-virtio.conf
options kvm ignore_msrs=1

After rebooting so the modules are loaded we see the ignore_msrs is set to Y:

$ sudo cat /sys/module/kvm/parameters/ignore_msrs
Y

mkdir -p ~/prgs/sadie/build-VersatilePB
cd ~/prgs/sadie/build-VersatilePB
meson -D Platform=VersatilePB --cross-file ../cross-file-VersatilePB --buildtype plain ..
ninja

mkdir -p ~/prgs/sadie/build-Posix
cd ~/prgs/sadie/build-Posix
meson -D Platform=Posix ..
ninja

mkdir -p ~/prgs/sadie/build-pc_x86_64
cd ~/prgs/sadie/build-pc_x86_64
meson -D Platform=pc_x86_64 --cross-file ../cross-file-x86_64 ..
ninja

ninja run-test-ac_putchar

CircleCi is used for testing sadie

For some x86_64 I also test on reapplications like test-ac_putchar you can test using qemu by doing:

ninja run-test-ac_putchar

X86_64 tests can be run on real hardware, in my case a i5 with an MSI B85M-E45 motherboard. The way I test the image on real hardware is to write the image to a usb stick using dd and then insert the usb stick into the test PC which is configured to boot from a usb stick. The dd command I use is below, note the sync command to besure everything is written:

WARNING: Using dd can wipe out your Hard Drive WARNING

sudo dd bs=4M if=tests/test-ac_putchar/test_ac_putchar.img of=/dev/sdb ; sync

I'm using grub2 as the bootloader and I've configured it to route its terminal input/output to the serial port 0 and buad rate is 115200. See tests/test-ac_putchar/grub.cfg for details.

On my MSI B85M-E45 test system I'm using a USB to serial adapter with has a PL2303 chip. I plug it into a USB port on my dev system and connect it to the serial port test system via a NULL modem cable.

On my dev system I use screen to connect to /dev/ttyUSB0 to see the grub and putchar output, I use the following command:

screen /dev/ttyUSB0 115200,cs8