Difference between revisions of "Tegra/Mainline SW/Nouveau"

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(kmscube)
Line 95: Line 95:
 
  make -j4
 
  make -j4
 
  make install
 
  make install
 
=== kmscube ===
 
At this point you should be able to quickly try your setup using kmscube. Get the '''master''' branch of git://gitorious.org/thierryreding/kmscube.git, compile and test:
 
 
./autogen.sh --prefix=$NVD
 
make -j4
 
./kmscube /dev/dri/card0 /dev/dri/renderD128
 
 
alternatively,
 
 
./kmscube /dev/dri/card0 /dev/dri/card1
 
 
Should also work.
 
 
You should see a fullscreen cube rotating seamlessly. This validates the accelerated path of the Nouveau driver and the passing of buffers between Nouveau and tegradrm for display.
 
  
 
=== Wayland ===
 
=== Wayland ===
Line 128: Line 113:
 
  make -j4
 
  make -j4
 
  make install
 
  make install
 +
 +
=== kmscube ===
 +
At this point you should be able to quickly try your setup using kmscube. Get the '''master''' branch of git://gitorious.org/thierryreding/kmscube.git, compile and test:
 +
 +
./autogen.sh --prefix=$NVD
 +
make -j4
 +
./kmscube /dev/dri/card0 /dev/dri/renderD128
 +
 +
alternatively,
 +
 +
./kmscube /dev/dri/card0 /dev/dri/card1
 +
 +
Should also work.
 +
 +
You should see a fullscreen cube rotating seamlessly. This validates the accelerated path of the Nouveau driver and the passing of buffers between Nouveau and tegradrm for display.
  
 
=== Weston ===
 
=== Weston ===

Revision as of 00:45, 10 September 2014

Nouveau Support on Jetson TK1

This page keeps track of Nouveau's status on Jetson TK1 and acts as a kind of tutorial to get things running.

Note that Nouveau requires an upstream kernel to work and cannot be used with the L4T kernel. Going through this document will replace your L4T kernel with an upstream one, which may impact your board's usability as upstream kernels are currently less-featured. Due to the current reduced functionality of using Nouveau on Jetson TK1, this should really only be followed by people intending to hack on Nouveau or test it.

Note that as of now, there is no X.org support (Xwayland does work though). All the instructions of this document are for setting up DRM, Mesa and Wayland.

The GPU in Jetson TK1 is called GK20A and will be referred as such throughout this document.

U-boot, Kernel and Nouveau Module (the easy way)

Just follow the instructions on https://github.com/scele/tegra-manifests to easily cross-compile and install the U-boot bootloader, Linux kernel and Nouveau kernel module.

U-boot, Kernel and Nouveau Module (the h4x0r way)

Although the goal is to eventually have all the necessary support in the upstream projects, a few patches are still on their way there and therefore you will need to use non-mainline U-boot, Linux kernel and Nouveau modules branches.

U-boot

Compile and install the master branch of git://git.denx.de/u-boot-tegra.git. An essential patch (df3443dfa4) is required for the GPU to initialize properly and it has not reached mainline yet.

Kernel

Most of the kernel patches have been merged for 3.17, but a few are still pending, hopefully not for too long.

Checkout the drm branch of https://github.com/Gnurou/linux.git. It has just a handful of commits on top of the current -rc.

From the kernel root, create a build directory and go into it:

mkdir build-tegra
cd build-tegra

Select the Tegra configuration and cross-compile the kernel and modules (adapt the CROSS_COMPILE parameter to match your cross-compiler):

make -j4 -C .. ARCH=arm O=`pwd` CROSS_COMPILE=arm-none-eabi- tegra_defconfig dtbs zImage modules

Now install the kernel and modules. Mount the root partition of your Jetson TK1 (if you are booting off eMMC, run "ums 0 mmc 0" from U-boot to make it appear as a USB storage device) and adapt the following lines so the mount directory matches:

cp arch/arm/boot/zImage arch/arm/boot/dts/tegra124-* /path/to/jetson/root/boot
make -C .. ARCH=arm O=`pwd` CROSS_COMPILE=arm-none-eabi- INSTALL_MOD_PATH=/path/to/jetson/root modules_install

Until Tegra K1 SMMU support is merged, you will need CMA memory. Lots of it. Make sure to boot with at least cma=256M in your kernel command-line.

Nouveau Kernel Module

The version of Nouveau in the kernel still lacks a few patches to allow GK20A to be used.

Checkout the gk20a branch of https://github.com/Gnurou/nouveau.git. Then compile the modules against your Linux tree:

cd nouveau/drm
make -j4 ARCH=arm CROSS_COMPILE=arm-none-eabi- O=/path/to/kernel/source/build-tegra M=$PWD -C /path/to/kernel/source modules

Mount your Jetson TK1 root partition again, and install the modules:

make ARCH=arm CROSS_COMPILE=arm-none-eabi- O=/path/to/kernel/source/build-tegra M=$PWD INSTALL_MOD_PATH=/path/to/jetson/root -C /path/to/kernel/source modules_install

NVIDIA GK20A Firmware

GK20A's firmware should eventually end in linux-firmware, but until it is the case you will need to find or extract the 4 firmware files nvea_fuc409c, nvea_fuc409d, nvea_fuc41ac and nvea_fuc41ad. These files are still not officially distributed.

Put the 4 firmware files into /lib/firmware/nouveau of your Jetson TK1 root.

After the kernel, Nouveau modules, and firmware have been installed, you can boot your Jetson: the nouveau module should load successfully despite a few errors in the kernel log. To confirm, check that /dev/dri/renderD128 exists. If it does, the Nouveau module is correctly loaded!

User-space

We will compile all the required projects on the Jetson board. It takes more time, but is easier to achieve than cross-compilation.

Here's a (partial?) list of packages you should have installed before continuing. These package names are from Ubuntu 14.04.

autoconf
bison
flex
pkg-config
libtool
libpthread-stubs0-dev
x11proto-gl-dev
x11proto-dri2-dev
x11proto-dri3-dev
x11proto-present-dev
x11proto-xf86vidmode-dev

We will install all needed programs and libraries into $HOME/usr to avoid overwriting anything on the system. So first let's create an environment file for when we want to use Nouveau stuff, in e.g. ~/nouveau-env.sh:

NVD=$HOME/usr
LD_LIBRARY_PATH=$NVD/lib
PKG_CONFIG_PATH=$NVD/lib/pkgconfig/:$NVD/share/pkgconfig/
ACLOCAL="aclocal -I $NVD/share/aclocal"
export NVD LD_LIBRARY_PATH PKG_CONFIG_PATH ACLOCAL
export PATH="$NVD/bin:$PATH"

You can source this file before doing Nouveau-related work, or better, add the following to your ~/.bashrc:

source ~/nouveau-env.sh

Now with this environment properly set up, let's compile all needed libraries and programs.

libdrm

Some patches on top of mainline are still needed. Get the gk20a branch of https://github.com/Gnurou/drm.git, then compile and install as follows:

./autogen.sh --prefix=$NVD --enable-tegra-experimental-api
make -j4
make install

Wayland

Wayland must be installed prior to Mesa so its Wayland support can be included.

Checkout the master branch (commit 5bed9e46e7 is known to work) from git://anongit.freedesktop.org/wayland/wayland, then compile and install:

./autogen.sh --prefix=$NVD --disable-documentation
make -j4
make install

Mesa

All the needed patches are already in upstream Mesa, horray! But they will not be released until Mesa 10.3. So by the meantime, you will need to compile Mesa from source.

Checkout the master branch (commit e9a4e7492 is known to work) of git://anongit.freedesktop.org/mesa/mesa, then compile as follows:

./autogen.sh --without-dri-drivers --with-gallium-drivers=nouveau --enable-gallium-egl --enable-gbm --enable-egl --with-egl-platforms=drm,wayland --enable-gles1 --enable-gles2 --enable-opengl --prefix=$NVD
make -j4
make install

kmscube

At this point you should be able to quickly try your setup using kmscube. Get the master branch of git://gitorious.org/thierryreding/kmscube.git, compile and test:

./autogen.sh --prefix=$NVD
make -j4
./kmscube /dev/dri/card0 /dev/dri/renderD128

alternatively,

./kmscube /dev/dri/card0 /dev/dri/card1

Should also work.

You should see a fullscreen cube rotating seamlessly. This validates the accelerated path of the Nouveau driver and the passing of buffers between Nouveau and tegradrm for display.

Weston

Checkout the baserock/james/weston branch of git://git.baserock.org/delta/weston.git. Then:

mkdir m4
./autogen.sh --prefix=$NVD
make -j4
sudo make install

You should now be able to run Weston. Make sure you have a keyboard and mouse connected, as it won't run through serial, and start Weston:

weston-launch

You should now see the Weston desktop and be able to run programs!

X.org

No X.org support for now - sorry!

Xwayland

Xwayland can be used to run X applications in Wayland. The Xwayland source can be found in the git repository at git://anongit.freedesktop.org/xorg/xserver. You will need some additional dependencies: libepoxy, X protocol files, libxtrans. For instructions, see http://wayland.freedesktop.org/xserver.html. To build Xwayland, run

 autoreconf -fi
 ./configure --prefix=$NVD \
     --enable-xwayland \
     --enable-dri \
     --disable-xorg \
     --disable-xwin \
     --disable-xquartz \
     --disable-xvfb \
     --disable-xnest \
     --disable-docs \
     --disable-devel-docs
 make -j4
 make install

After installing Xwayland, you need to configure weston to use it and make some symlinks so that it doesn't fail immediately. See http://wayland.freedesktop.org/xserver.html for instruction on doing this.

After installing Xwayland, X applications should just work. At least chromium-browser does.

Enabling Reclocking

Reclocking support is enabled in the kernel, but to support it from user-space the Nouveau module needs to be loaded with a parameter. Paste the following:

options nouveau pstate=1

into /etc/modprobe.d/nouveau.conf and reboot for effect. The pstate file should appear in /sys/devices/soc0/57000000.gpu/. Use cat to list the possible values, and echo 0f to it to max the GPU frequency if needed!