Buildroot for the rock 3 a

flatmax · February 28, 2022, 9:26am

I have a successful and super simple Linux OS for buildroot working.

It is part of the buildroot.rockchip external repo : https://github.com/flatmax/buildroot.rockchip

To make it work, follow the readme or do the following (make sure you have the dependencies setup from the readme first) :

Clone buildroot and the rockchip external dir

git clone git://git.busybox.net/buildroot buildroot
git clone git@github.com:flatmax/buildroot.rockchip.git buildroot.rockchip.ext
git checkout 73248c03fd04eddad78fea5096cd98b2a2d43e81 # note check the readme to make sure this is still correct.

Setup

source buildroot.rockchip.ext/setup.rock3a.sh yourPath/buildroot

Make

make rkbin
make

Write to TF/SDRCARD

The command to write is output at the end of the make process

boot

Uboot commands are still manual at this point. Cut and paste the contents of boot.cmd into console when uboot comes up to get linux to boot. See here : https://github.com/flatmax/buildroot.rockchip/blob/master/board/RK3568/boot.cmd

Login

ssh rock3a.local

dominik · December 9, 2021, 10:42am

Thanks!
I’ll give it a try for sure!

starsky_walker · February 28, 2022, 5:54am

Thanks！
But I met a bug.When I run “make " ,the log prints " buildroot/output/build/.rkdevice-0fe366cf14a6d5d552a5bddbc7b8ff58260ae6e6-br1.tar.gz.ZAWY56/output’ 'http://sources.buildroot.net/rkdevice/rkdevice-0fe366cf14a6d5d552a5bddbc7b8ff58260ae6e6-br1.tar.gz” 404 not found. I visit the http://sources.buildroot.net ,but I can find nothing about rkdevice.So I come here for your help.
Thanks again!

flatmax · February 28, 2022, 9:25am

Thanks for pointing this out.

I have updated the README.md : https://github.com/flatmax/buildroot.rockchip/blob/master/README.md

For the Rock 3a, please make sure you checkout the correct buildroot version before building. This will fix that download issue you were having.

Matt

francesco.agostini · March 18, 2022, 12:38pm

Hi! thank you for your buildroot repo. I tried with a recent version of buildroot. The creator has introduced the package rockchip-mali. With some patches on this package (changed the libmali repo with Radxa repo and the install procedure) I sucessfully built an image with qt5 on EGLFS. If you like it we can make a package on your repo dedicated to Radxa board with rk3568.

patch_buildroot.zip (1.9 KB)

flatmax · March 24, 2022, 7:54am

Very nice - good to hear it works for you.
You may be interested in patching buildroot for those changes ? Those patches look like they apply to buildroot - right ?

francesco.agostini · March 24, 2022, 12:48pm

Hi, about the rockchip-mali patch, I just created an alternative package named radxa-mali, that fetches from radxa libmali repo. But require an additional patch to qt5-base package. I don’t know why on the rockchip-linux GitHub page lot of repositories were deleted. In the next week, I’ll try to create a similar package for radxa’s mpp and rknpu2.

radxa-mali.zip (172 Bytes)

Raezer · April 1, 2022, 12:42pm

Hello, i’m trying to make buildroot using your instruction, but have problem, i have uploaded screenshots, where can i get sources from that deleted repo?

francesco.agostini · April 4, 2022, 6:19am

Hi, you can try to patch the mk file by changing the repo URL https://github.com/Caesar-github/device-custom.git

Raezer · April 4, 2022, 7:04am

Thank you, but i have next error, i think rockchip deleted some repos.

flatmax · April 4, 2022, 7:54am

I noticed this effects the original buidroot.rockchip repo : https://github.com/flatmax/buildroot.rockchip
Specifically the post-image.sh script which calles rktools/mkimage : https://github.com/flatmax/buildroot.rockchip/blob/master/board/RK3568/post-image.sh#L24

That will have to be updated if a suitable mkimage is found for all platforms. I wonder if rockchip have a suitable mkimage somewhere else ?

Raezer · April 4, 2022, 1:21pm

Changed rktools.mk to
RKTOOLS_VERSION = 99fbae9d39bea69edbbb12937d49b7d6c8a9c04d
RKTOOLS_SITE = https://github.com/xlloss/tools.git
and everything is ok. Thank you!

Raezer · April 6, 2022, 9:19am

Hello, i’m trying to add your patch, but i’m getting error (i attached pictures)

francesco.agostini · April 6, 2022, 9:26am

Hi, if you are using radxa kernel you don’t need mali-driver, because is already present in the kernel, just remove the dependency between rockchip-mali and mali-driver.

Raezer · April 6, 2022, 9:30am

Thank you! My mistake.

Raezer · April 6, 2022, 10:12am

Trying to add qt but getting errors, rockchip-mali is enabled, libgbm and eglfs selected.

francesco.agostini · April 6, 2022, 10:30am

Hi, have you tried leaving empty the default graphical platform?

Raezer · April 6, 2022, 10:33am

Yes, first attempt was with empty platform. I’ll try “make clean all”.

Raezer · April 6, 2022, 11:25am

Well, make clean all didn’t help.

Raezer · April 6, 2022, 1:42pm

> pkg-config error with 'cairo-ft': Could not generate cargs for cairo-ft:
> Package glesv2 was not found in the pkg-config search path.

Same with harfbuzz.
Can you share your .config file, if it’s ok of course. I’m not shure whats wrong with my config.