Nothing seems to support booting uncompressed ARM 32-bit kernels, and
everything supports zImage, so change the default on 32-bit to zImage.
More information about this:
http://www.simtec.co.uk/products/SWLINUX/files/booting_article.html
Bug: 165410044
Test: booted zImage on cuttlefish
Change-Id: I130d38737643dc092900e57e117ac268f6a9bd07
Signed-off-by: Alistair Delva <adelva@google.com>
This reverts commit e145f7b103.
AOSP's distribution of GNU binutils always had a curious target triple
prefix on the binaries. Now that GNU binutils is deprecated for Android
Common Kernels, we can now remove this out of tree workaround. Now
building Android kernels with LLVM matches upstream (see
Documentation/kbuild/llvm.rst).
Bug: 118439987
Bug: 120440614
Bug: 141693040
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Change-Id: Iecaa3264a440f795f2f3a44bdf74fe28ad4ed1cc
The default goals for an ARCH=arm64 kernel will build all of the dtb
files available in the tree, and hard-codes the generation of a
gzip-compressed Image artifact. For GKI, we want to support various
compression methods (gz, lz4 and uncompressed) and this can be handled
outside of kbuild where compressor flags can be tuned. Also, GKI does
not need to build any dtb files because it is board-neutral, and in most
cases the dtbs will come from downstream kernels, not ACK.
On arm and aarch64, this suppresses the generation of the useless gzip
compressed Image artifact, and dtbs on the gki configs, which do not make
sense. The x86 defaults were already optimal but make them match
aarch64. On db845c, this builds only the needed dtb file and a compressed
artifact for backwards compatibility.
Bug: 152546767
Change-Id: If90ea331fc7564358b77a777fb367d7d2f95e6a6
Signed-off-by: Alistair Delva <adelva@google.com>
Enables us to catch build-breaks for 32-bit ARM with an allmodconfig
build in continuous integration testing.
Bug: 151459448
Change-Id: I825a18771c214e6389fc2755fce20c8fc2531695
Signed-off-by: Alistair Delva <adelva@google.com>
