Installing Coriolis2


First set up an schroot debootstrap jail with debian 10. These instructions are based on information taken from here:

In advance, on the host system, edit /etc/fstab and add mount points:

(edit: personally I prefer using mount --bind points. however if doing that then after a reboot the chroot will lose the bind mountpoints and the commands need to be re-run, without which the chroot is unusable)

/dev    /home/chroot/coriolis/dev   none    bind    0   0
/dev/pts /home/chroot/coriolis/dev/pts  none    bind    0   0
/proc   /home/chroot/coriolis/proc  none    bind    0   0
/sys    /home/chroot/coriolis/sys   none    bind    0   0
/tmp    /home/chroot/coriolis/tmp   none    bind    0   0

Then run these commands:

sudo bash
apt-get install debootstrap schroot
mkdir /opt/chroot/coriolis
/usr/sbin/debootstrap buster !$
mount /home/chroot/coriolis/dev
mount /home/chroot/coriolis/dev/pts
mount   /home/chroot/coriolis/proc
mount   /home/chroot/coriolis/sys
mount   /home/chroot/coriolis/tmp
echo "coriolis2" > /home/chroot/coriolis/etc/debian_chroot

To do some preparation (users):

chroot /home/chroot/coriolis2 /bin/bash
adduser {yourpreferredusername}

It is best to make the username the same as the first user that was added during the main (non-chroot) debian install, so that uid 1000 matches between both main and chroot. You can check this by looking at /etc/passwd as root, or by typing "id".

lkcl@fizzy:~$ id
uid=1000(lkcl) gid=1000(lkcl) groups=1000(lkcl),5(tty),....

Alternatively, /etc/passwd and /etc/group may be mount-bound as well as /home however if you later forget you did this and decide to delete the chroot, you will delete the entire /home of your main system, as well as /etc/passwd.

You may wish to follow some of the other things such as configuring apt, locales and keyboard, from the above-linked debian-admin HOWTO.

bootloader, kernel, ssh access, are unnecessary. Do run "apt clean" to clear out /var/cache/apt/archives in the chroot.


Create an schroot file section for the coriolis chroot by editing /etc/schroot/schroot.conf:

description=Debian Buster for Coriolis

Now as an ordinary user - not as root - you may type:

lkcl@fizzy:~$ schroot -c coriolis

and, due to the contents of /etc/debian_chroot, and that you were in fact logged in as uid 1000 and did in fact add a user to the chroot as uid 1000, the prompt should become:


If however you need to run as root, then from outside the chroot, as root, you run this:

lkcl@fizzy:~# schroot -c coriolis

and you will see this as a result:



These are nominally taken from however there are errors in the original at the moment. Do not try qt5, it will not work.

In ~/.bash_profile add the following so that builds (rebuilds) if you need them will be quicker, and you can run the GUI from the chroot:

export PATH=/usr/lib/ccache:"$PATH"
export DISPLAY=:0.0

Second (or at a new terminal / xterm), log in as root on the host (not the chroot) then do schroot -c coriolis to get to be root in the chroot (or, you can install sudo in the chroot and then do "sudo bash" in the chroot).

Then run the following commands, as root, in the chroot:

apt-get update
apt-get install -y automake binutils-dev bison build-essential \
ccache clang cmake doxygen dvipng flex gcc git graphviz \
imagemagick libboost-all-dev libboost-python-dev libbz2-dev \
libmpfr-dev libgmp-dev libmotif-dev libreadline-dev \
libqwt-dev libtool libx11-dev libxaw7-dev libxml2-dev \
libxpm-dev libxt-dev python3.7 python3-jinja2 python3-pip \
python3-setuptools python-dev python-qt4 python-sphinx \
qt4-dev-tools rapidjson-dev tcl tcl-dev tcl-tclreadline \
texlive texlive-fonts-extra texlive-lang-french \
texlive-latex-extra texlive-pictures xfig yosys zlib1g-dev

Then, as the ordinary (non-root) user in the schroot:

mkdir -p ~/coriolis-2.x/src
cd ~/coriolis-2.x/src
git clone
cd coriolis
git checkout devel
./bootstrap/ --project=coriolis --make="-j$(nproc) install"

To set up the coriolis2 environment, run this:

eval `~/coriolis-2.x/src/coriolis/bootstrap/`

For convenience that may be placed in a file and "sourced", to avoid having to look this page up every time

echo "eval `~/coriolis-2.x/src/coriolis/bootstrap/`" > \
source ~/coriolisenv

Testing coriolis2

To run the graphical editor go to the bin directory

cd ~/coriolis-2.x/Linux.MyARCH/Release.Shared/install/bin

Then run the following commands from the menubar

Tutorials / Run Demo (Python Flavour)

If the following window appears you have an error.

click on the chicken several times

If you have the following, congratulations:

Upgrading to latest yosys in the chroot

yosys in debian may not be enough to work with nmigen, therefore it's probably a good idea to upgrade.

As root, in the chroot, run the following:

apt-get update
apt-get build-dep yosys
apt-get install clang
apt-get remove yosys

This will remove debian/buster yosys however getting the build dependencies is quick and easy enough.

As the ordinary user, the following instructions can be followed (

cd ~
git clone
cd yosys
make config-clang
make -j$(nproc)

As root, run:

make install

Check out alliance and alliance-check-toolkit

Adapted from

In the chroot, as the ordinary schroot user, in ~/.bash_profile add the following so that builds (rebuilds, if you need) them will be quicker:

export PATH=/usr/lib/ccache:"$PATH"

In the chroot, as the ordinary schroot user:

mkdir -p alliance/build alliance/install
cd ~/alliance
git clone
mv alliance/alliance/src alliance
rm -rf alliance/alliance
cd alliance/src
cd ~/alliance/build
export ALLIANCE_TOP=$HOME/alliance/install
../alliance/src/configure --prefix=$ALLIANCE_TOP --enable-alc-shared
make -j1 install

The three exports are best added to ~/.bash_profile for later convenience

Tutorials and checks

Install alliance-check-toolkit in the chroot:

Run the following (if not done already):

source ~/coriolisenv

Git clone alliance-check-toolkit:

git clone

You must create a configuration for your user in alliance-check-toolkit to define where the various tools are installed:

touch alliance-check-toolkit/etc/mk/users.d/
cat <<EOF >>alliance-check-toolkit/etc/mk/users.d/
export CORIOLIS_TOP=/home/USERNAME/coriolis-2.x/Linux.x86_64/Release.Shared/install
export ALLIANCE_TOP=/home/USERNAME/alliance/install
export CHECK_TOOLKIT=/home/USERNAME/alliance-check-toolkit
export YOSYS_TOP=/home/USERNAME/yosys

You can try the ARM in alliance-check-toolkit:

cd alliance-check-toolkit/benchsARM/cmos/
make lvx

This should take about five minutes. It's symbolic, but should be a configuration compatible with 180nm. To actually see the results:

make cgt


Select File -> Open Cell or press CTRL + o

Enter as the cell name (without the single quotation marks):


As a very rough approximation, you can say that one lambda equals 180nm.

It depends on the zoom level and of the fact that you ask to see the inside of the cells.

To actually see the transistors:

Tools -> Controller -> Filter Tab -> check "Process Terminal Cells"

You can also tweak the layer display by selecting:

Tools -> Controller -> Layers & Go

You can quicly hide/show the Controller with:


The up-to-date documentation is supplied directly in the Coriolis repository:


The links toward the doxygen doc will be invalid a this point, but everything else works.

After installation, it is put in:


More Information from Jean-Paul

There is a WIP documentation website for Alliance/Coriolis at

There are also very cursory informations about installing Alliance here:

You also have a third repository for various blocks/chip/examples here:

(with a basic doc under "doc/"...)

Clone "soclayout" repository and place and route a layout experiment

In order to do the physical layout of the logical netlists generated by yosys we use coriolis and alliace installed above by doing the following (using experiment9 as an example):

$ cd ~/src
$ git clone
$ cd soclayout/
$ find . -type f -exec sed -i 's/'lkcl'/'"$USER"'/g' {} \;
$ ./
$ cd experiments9
$ ./
$ yosys
yosys> read_ilang
yosys> heirarchy -check -top test_issuer
yosys> synth -top test_issuer
yosys> dfflibmap -liberty /home/USERNAME/alliance/install/cells/sxlib/sxlib.lib
yosys> abc -liberty /home/USERNAME/alliance/install/cells/sxlib/sxlib.lib
yosys> clean
yosys> write_blif test_issuer.blif
yosys> exit
$ make layout (will take between 20min and 2 hours depending on your hardware)
$ make view

A window should open with with contents that look like this (pretty isn't it?)

Issues running from (e.g.) archlinux as host and debian as a chroot

You may run into difficulties firing up GUI applications from the chroot. Try installing Xnest which you should do in the host system. Also remember to install a "basic" window manager (twm, fvwm2)

On the host, run Xnest and a window manager:

Xnest :1 -ac &
twm -display :1 &

Then, in the chroot, change DISPLAY environment variable (permanently in ~/.bash_profile if desired)

export DISPLAY=:1.0

Then, in the chroot, follow the cgt instructions above, or use "make view" in any of the soclayout experiments or alliance-check-toolkit bench tests