live-bootstrap/sysa/linux-4.9.10/linux-4.9.10.sh

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Update the linux kernel for sysb/c to 4.9.10. - We do not use latest 4.9.x because it relies on a new version of binutils, while older versions do not. (Note: we should be able to go a bit newer but I didn't bother testing >50 versions to figure this out). - We do not use newer kernel versions because they require one or more of (new perl, new binutils, new make, new gcc, new bison, new tar). - sysb and sysc are updated to use the SATA (libata) subsystem (aka sda) instead of IDE-emulating SATA subsystem (aka hda) which is now available to us. - While theoretically according to docs 4.9 should work OOTB with our version of binutils this is not the case, so we have to do a bit of (interesting) patching. But this does not break anything. - Thankfully serial support in 4.9 is not screwed over like it is in 2.6 so we can revert to that. - 4.9 has the linux-libre project at our disposal, instead of gNewSense. So we use this. Unfortunatley that takes forever because we have to use sed because our version of gawk is too old/buggy. :( I plan to introduce very shortly 1. parallelism 2. 'sysc snapshot' which will start from sysc to avoid this. I do not want to use linux-libre tarballs because they make modificiations directly from this script (aka not easily verifiable, use the source!) and this script allows for much greater flexibility. - We compile the initramfs ahead-of-build using the in-tree cpio generator instead of also building cpio to use less packages. We do NOT build the initramfs into the kernel like 2.6 (unsupported). - Oh and fix a kexec-tools checksum.
2021-08-04 03:56:07 +01:00
# SPDX-FileCopyrightText: 2021 fosslinux <fosslinux@aussies.space>
#
# SPDX-License-Identifier: GPL-3.0-or-later
src_unpack() {
default || true # Predictable link errors - not a problem
cp ../src/deblob-4.9 ../src/deblob-check ${pkg}/
# Clear up storage space
rm -rf ../src
}
generate_autoconf_h() {
# generate include/linux/autoconf.h -- we do not have gperf rn to do it the normal way
mkdir -p include/generated
# Transform each of the CONFIG_* options that are =y into header
grep -E '=y$' .config | sed 's/=y$/ 1/' | sed 's/^/#define /' >> include/generated/autoconf.h
# Transform each of the CONFIG_* options that are unset into headers
grep -E ' is not set$' .config | sed 's/ is not set$//' | sed 's/#/#undef/' >> include/generated/autoconf.h
# Transform each of the non-boolean options into headers
grep -E '=.*$' .config | grep -v -E '=y$' | sed 's/=/ /' | sed 's/^/#define /' >> include/generated/autoconf.h
}
src_prepare() {
default
mv config .config
mkdir -p include/config
cp .config include/config/auto.conf
generate_autoconf_h
# Deblob the kernel
chmod +x deblob-4.9 deblob-check
# Don't use gawk, use sed
AWK=dosentexist ./deblob-4.9
Update the linux kernel for sysb/c to 4.9.10. - We do not use latest 4.9.x because it relies on a new version of binutils, while older versions do not. (Note: we should be able to go a bit newer but I didn't bother testing >50 versions to figure this out). - We do not use newer kernel versions because they require one or more of (new perl, new binutils, new make, new gcc, new bison, new tar). - sysb and sysc are updated to use the SATA (libata) subsystem (aka sda) instead of IDE-emulating SATA subsystem (aka hda) which is now available to us. - While theoretically according to docs 4.9 should work OOTB with our version of binutils this is not the case, so we have to do a bit of (interesting) patching. But this does not break anything. - Thankfully serial support in 4.9 is not screwed over like it is in 2.6 so we can revert to that. - 4.9 has the linux-libre project at our disposal, instead of gNewSense. So we use this. Unfortunatley that takes forever because we have to use sed because our version of gawk is too old/buggy. :( I plan to introduce very shortly 1. parallelism 2. 'sysc snapshot' which will start from sysc to avoid this. I do not want to use linux-libre tarballs because they make modificiations directly from this script (aka not easily verifiable, use the source!) and this script allows for much greater flexibility. - We compile the initramfs ahead-of-build using the in-tree cpio generator instead of also building cpio to use less packages. We do NOT build the initramfs into the kernel like 2.6 (unsupported). - Oh and fix a kexec-tools checksum.
2021-08-04 03:56:07 +01:00
# Remove shipped files
find . -name "*_shipped*" -delete
}
src_compile() {
# Generate the initramfs so we can remove /sysb
make ARCH=i386 prepare
make ARCH=i386 usr/
mkdir -p "${PREFIX}/boot"
mv usr/initramfs_data.cpio.gz "${PREFIX}/boot/initramfs-sysb"
make clean
rm -rf /sysb
sed -i 's:/sysb::' .config
cp .config include/config/auto.conf
rm include/generated/autoconf.h
generate_autoconf_h
make ARCH=i386 prepare
make ARCH=i386
}
src_install() {
cp arch/i386/boot/bzImage "${PREFIX}/boot/linux-4.9.10"
}