Let's replicate and update the mini's Linux buildroot-2016
Jun 23, 2020 5:27:08 GMT
spannernick and jj0 like this
Post by threader on Jun 23, 2020 5:27:08 GMT
Hello all!
This is a WIP for y'all to have some fun with.
I decided I would have a crack at the base system of this cool little replica, to see if there is anything to be gained and extended, at first glance I noticed all binaries were all soft-float, not softfp and not utilizing the neon instructions available. Ok, I think to myself, I'll just grab the 2016 buildroot used, get this building and see where I land, this should be quick and easy, as always, I think to myself. As far as quick and easy, this wasn't too bad, I eventually sourced the allwinner sdk's and grabbed the build scripts for buildroot that go together with the kernel 'build suni7 scripts' that handle all the fiddly stuff with producing an image, like handling some .bin files, and should just work in the end, then somewhere along the line I stumbled across the sources for the-c64-mini (though these are not used as of yet).
As this is such a WIP still, I've got no binaries to share yet, 'just' sources to be built, I intend to edit this first post so please don't quote it in full. Once I have linaro glibc built and have studied the official sources some more I hope to make binaries available.
Source: github.com/threader/buildroot-the-c64-mini
README:
This is a WIP for y'all to have some fun with.
I decided I would have a crack at the base system of this cool little replica, to see if there is anything to be gained and extended, at first glance I noticed all binaries were all soft-float, not softfp and not utilizing the neon instructions available. Ok, I think to myself, I'll just grab the 2016 buildroot used, get this building and see where I land, this should be quick and easy, as always, I think to myself. As far as quick and easy, this wasn't too bad, I eventually sourced the allwinner sdk's and grabbed the build scripts for buildroot that go together with the kernel 'build suni7 scripts' that handle all the fiddly stuff with producing an image, like handling some .bin files, and should just work in the end, then somewhere along the line I stumbled across the sources for the-c64-mini (though these are not used as of yet).
As this is such a WIP still, I've got no binaries to share yet, 'just' sources to be built, I intend to edit this first post so please don't quote it in full. Once I have linaro glibc built and have studied the official sources some more I hope to make binaries available.
Source: github.com/threader/buildroot-the-c64-mini
README:
So what is this mess mr.threader?
This is an initial (WIP) effort to reproduce and update the base system for
the c64 mini (at least).
To build:
Grab the following
linaro-gcc-4.9 from https://releases.linaro.org/components/toolchain/binaries/4.9-2016.02/arm-linux-gnueabi/
Kernel from https://github.com/threader/C64Mini-FEL-boot
(patched to allow newer uboots, and one spotted bug)
And I took aim at (currently) 2.31 https://git.linaro.org/toolchain/glibc.git
Copy .config-a20-mali to .config, make sure paths in local.mk
and scripts/build_sun7i.sh are correct. Keeping in-line with the suni7 sdk,
paths are hardcoded in the scripts, this includes
BR2_TOOLCHAIN_EXTERNAL_PATH="/home/thread/dev/sdk/gcc-linaro-4.9-2016.02-x86_64_arm-linux-gnueabi"
in the .config. I chose gcc-4.9 due to the kernel, CROSS_COMPILE could be
defined for gcc-4.9 to build the kernel, but I'm not there yet.
Nor am I there with testing the linaro-libc, I want to build linaro-gcc,
so this should get real fun real fast.
Once you are pretty sure everythig is in order, execute scripts/build_sun7i.sh
After some fidgeting, a base system should emerge, this is as of now not
a replacement for the stock system, this is a WIP. chroot to it and verify
everything is in order and experiment away :)
Do remember to have a backup though.
A big thank you to 'jj0' for excellent posts and answering some of my oddball
newbie suni7 questions getting into this!
just did it with Freetype2.7 too.
