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This kernel has been replaced by linux-libre-64 in libre in
an attempt to unify all 64bit kernels made for 32bit
rootfs.
This has been tested on a SBC that has good upstream
support in linux and in u-boot, and a 64bit CPU.
That SBC is however not officially supported by Parabola
as it still require nonfree binaries in u-boot to boot.
The way to go to add official 64bit support ARM computers
with 64bit CPUs is to get devices that can at least boot
with fully free software.
Some SBCs with an Allwinner SOCs like the A64 seem a good
target to do that as some SBCs have good support in
upstream Linux and u-boot and can boot with free software,
and we already have an uboot4extlinux package for many
boards with Allwinner SOCs, so we could probably reuse most
of that work.
However I don't have an SBC like that yet, so until now I
tested on a board I was given at a conference.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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This is done by enabling CONFIG_COMPAT.
Though when importing the configuration on Linux
v5.4.8 and enabling this configuration with:
make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- xconfig
it updated other parts of the the .config as well.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Without that patch, /boot/vmlinuz-linux-libre-aarch64 ends
up being an Image.gz, however some u-boot configuration
and/or versions seem to not like that and fail with the
following message:
Bad Linux ARM64 Image magic!
Making sure that vmlinuz-linux-libre-aarch64 is an Image
results in the board booting. However it then fails with:
Failed to execute /init (error -8)
This might be because the board I used for testing doesn't
support runing 32bit binaries and/or because we need to
enable more configuration in the kernel to enable that.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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The chromebook package has also been disabled due to the following
error:
| ==> Starting package_linux-libre-aarch64-chromebook()...
| FATAL ERROR: Couldn't open "arch/arm/boot/zImage": No such file or directory
| mkimage: Can't read kernel.itb.tmp: Invalid argument
| ==> ERROR: A failure occurred in package_linux-libre-aarch64-chromebook().
| Aborting...
It could be fixed later on if there is some interest.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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- Compiling a toolchain takes time.
- We also need to make sure to get the toolchain right, usually it
requires 3 steps (gcc-initial, gcc-intermediate, gcc-final) and
here we're trying to do it in two to save compilation time.
- The 2 step toolchain worked for newlib but we don't know PKGBUILD
examples that do that for glibc based toolchains.
- We don't need a libc to build Linux.
Because of all that, we depends on the aarch64 gcc-initial toolchain
for building it now.
Once we have pushed aarch64 gcc, we will need to add it again as
a dependency for building this pacakge, in order to be able to build
this package and aarch64 userspace applications as well with the same
compiler.
Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
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