Retropie 4.x on Odroid C2

mphil906

@roleo
Thank you for the reply, I was able to compile emulationstation succesfully. Indeed, the default Ubuntu sdl was installed. I cloned the original posters repository. I'm not entirely sure if this was the issue, but in the function platform_odroid-c2() {...} __platform_flags did not contain mali. This is what I used:

function platform_odroid-c2() {
    __default_cflags="-O3 -march=armv8-a+crc -mtune=cortex-a53 -funsafe-math-optimizations"
    __default_asflags=""
    __default_makeflags="-j2"
    __platform_flags="armv8 neon mali" #added mali flag
    __qemu_cpu=cortex-a9
    __has_binaries=0
}

Not sure if this was the issue, but it compiles and runs. Thanks! Now attempting to compile retroarch.

BuZz

Just to note - I have a board now and will be looking at adding basic support as free time permits (ES + retroarch etc first).

roleo

@mphil906
I think this was the issue.

@BuZz
Great!
Thank you.

Shakz

@mphil906
See now I was just about to give up on this...dang...lemmie drag the darn thing out and give it another shot!
Thanks for posting!

roleo

With the last changes of the EmulationStation github I have a new problem during the configure phase:

cmake . -DFREETYPE_INCLUDE_DIRS=/usr/include/freetype2/

The cmake didn't find the vlc library.

CMake Error at CMake/Packages/FindVLC.cmake:33 (macro_ensure_version):
  MACRO_ENSURE_VERSION Macro invoked with incorrect arguments for macro
  named: MACRO_ENSURE_VERSION
Call Stack (most recent call first):
  CMakeLists.txt:51 (find_package)

--- EDIT ---

Sorry, my mistake.
The libvlc-dev was missing.

BuZz

I am currently working on odroid-c2 support - not trying to put you off working on it, but in case you don't want to duplicate efforts etc.

roleo

Apart reicast, I compiled everything I needed but I will continue to work on it for personal pleasure.
If I can help ...

Thanks for your support.

BuZz

@roleo Thanks.

Are you using the 16.04 aarch64 Ubuntu ? I was wondering as you are targetting aarch32 right ? Are you using an aarch32 targetted gcc ?

I was planning on targetting aarch64.

[edit] actually maybe I just misread - you will likely want to remove the "neon" platform flag though though if you have it as that's all aarch32 neon stuff which I don't think will work on aarch64 (without changes).

roleo

@BuZz
aarch64

odroid@odroid64:~$ uname -a
Linux odroid64 3.14.79-89 #1 SMP PREEMPT Thu Oct 13 08:42:27 BRT 2016 aarch64 aarch64 aarch64 GNU/Linux
odroid@odroid64:~$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/aarch64-linux-gnu/5/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-5 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-arm64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-arm64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-arm64 --with-arch-directory=aarch64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-multiarch --enable-fix-cortex-a53-843419 --disable-werror --enable-checking=release --build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu
Thread model: posix
gcc version 5.4.0 20160609 (Ubuntu/Linaro 5.4.0-6ubuntu1~16.04.4)

--- EDIT ---

I had forgotten. At a later time, I removed neon flag because the gcc doesn't support it.

function platform_odroid-c2() {
    __default_cflags="-O3 -march=armv8-a+crc -mtune=cortex-a53 -funsafe-math-opt
    __default_asflags=""
    __default_makeflags="-j2"
#    __platform_flags="arm armv8 neon mali"
    __platform_flags="arm armv8 mali"
    __qemu_cpu=cortex-a9
    __has_binaries=0
}

As far as I know neon is mandatory for arm64, so no command line flag is needed.

flag

I've an odroidc2 board too, if there's an image to test.

roleo

Hi BuzZ.
When I scroll up/down the game list (for example in MAME menu) I can see a strange screen flickerig due to the chars printed on the back (on the terminal I think).
Is this a known problem? Is there a solution?
This doesn't happen in raspberry image.

BuZz

@roleo to do with the sdl2 driver I guess. Will look into it.

detron

@BuZz

that is great! actually, had I known you needed one to try to get RetroPie support, I would have put some money towards getting you one.

I have an ODroid C2, and would LOVE to see RetroPie using that hardware. thank you Buzz and Hardkernel.

detron

if we get RetroPie working on the C2, I see myself buying more C2s those things are fast!

BuZz

@detron it will never be supported to the level of the rpi, but it will be source installable. I have a branch, doing some more fixing and I will do PR for testing..

WIP is here - https://github.com/joolswills/RetroPie-Setup/tree/odroid_c2

detron

@BuZz said in Retropie 4.x on Odroid C2:

@detron it will never be supported to the level of the rpi, but it will be source installable. I have a branch, doing some more fixing and I will do PR for testing..

WIP is here - https://github.com/joolswills/RetroPie-Setup/tree/odroid_c2

I know it will not be as well supported as the Raspberry Pi, and I would not expect anything else, I would be happy with any support. thank you very much for your effort (and others involved)

BuZz

https://github.com/RetroPie/RetroPie-Setup/pull/1795

roleo

@BuZz
Thank You.
I'm downloading it.

--- EDIT ---

I started with a new installation.
retroarch doesn't finish the build process, I have an error patching glsym_es2.h:
retroarch patch 03_glsym_types.diff failed to apply

emulationstation ok
lr-beetle-ngp ok
lr-beetle-pce-fast ok
lr-beetle-supergrafx ok
lr-fbalpha ok
lr-fceumm ok
lr-gpsp ok
lr-snes9x2005 ok
lr-snes9x2010 ok

--- EDIT ---

The source code of retroarch has changed and the patch is no longer needed.

roleo

Update.

lr-bluemsx ok
lr-mame2003 ok
lr-nestopia ok
lr-stella ok

The autostart script doesn't work.
The system waits for the login. After a successfull login es starts automatically.

ElementZero

I almost find it funny that just last night I decided to see if I could get retropie running on my c2 and then I find this after I had already run the retropie script. Looks like your changes were already merged in though (probably why everything build successfully). FYI I had to run "sudo MAKEFLAGS="-j1" ./retropie_setup.sh" to build emulation station though.

I'm working with the minimal install though so it just fails with an error about mali not working or something (not in front of it ATM so I can't see post the actual message) . I know it's because I need to install lightdm though so I guess that's next.

Thanks for your work on this!