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# Maintainer: Steven De Bondt <egnappah at gmail dot com>
pkgbase=linux-slim
_srcname=linux
gitver=v6.8.8
patchver=20240221.2
patchname=more-uarches-for-kernel-6.8-rc4+.patch
pkgver=6.8.v.8
pkgrel=2
arch=('x86_64')
url="http://www.kernel.org/"
license=('GPL2')
makedepends=('xmlto' 'docbook-xsl' 'kmod' 'inetutils' 'bc' 'git' 'libelf' 'lzop')
options=('!strip')
source=(
"git+https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git#tag=$gitver"
#'git+https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git'
# the main kernel config files
'config.x86_64'
# patch from our graysky archlinux colleague
"https://raw.githubusercontent.com/graysky2/kernel_compiler_patch/$patchver/$patchname"
# fast cppc patch
'fast_cppc.patch'
)
sha256sums=('SKIP'
#config.x86_64
'5fc0390575e78f5169df1ed2317ebacc85d406ed0e9f42347d08730148952a35'
#grayskypatch
'd69232afd0dd6982ae941cf2d1f577f4be2011e3bb847d1db37952acf416b5d3'
# fast cppc patch
'f8a69166a3ee91b797198b4e82b6e397a8f7749feed8aed7f3b323b020798a66'
)
_kernelname=${pkgbase#linux}
pkgver() {
echo $pkgver
}
prepare() {
cd "${_srcname}"
#Inject testingbranch tag
sed -i 's/CONFIG\_LOCALVERSION\=\"\"/CONFIG_LOCALVERSION\=\"_TestingBranch\"/g' "${srcdir}/config.x86_64"
if [ "${CARCH}" = "x86_64" ]; then
cat "${srcdir}/config.x86_64" > ./.config
else
echo "Sorry, non x86_64 arch not supported."
exit 2
fi
# Implement all packaged patches, report errors but advance anyway.
msg2 "Implementing custom kernel patches/reverts"
while read patch; do
echo "Applying $patch"
git apply $patch || exit 2
done <<< $(ls ../*.patch)
# get kernel version
msg2 "Preparing kernel"
yes "" | make prepare
# load configuration
msg2 "Preparing config"
make olddefconfig # old config from previous kernel, defaults for new options
}
build() {
cd "${_srcname}"
#force znver4
make ${MAKEFLAGS} LOCALVERSION= bzImage modules KCFLAGS="-O2 -pipe -march=znver4 -mtune=znver4 -fstack-protector-strong"
}
_package() {
pkgdesc="Linux kernel slimmed down to only work on AMD hardware. Zero compatibility."
depends=('coreutils' 'linux-firmware' 'kmod' 'mkinitcpio>=0.7' 'lzop')
optdepends=('crda: to set the correct wireless channels of your country')
cd "${_srcname}"
KARCH=x86
# get kernel version
_kernver="$(make LOCALVERSION= kernelrelease)"
_basekernel=${_kernver%%-*}
_basekernel=${_basekernel%.*}
mkdir -p "${pkgdir}"/{lib/modules,lib/firmware,boot}
make LOCALVERSION= INSTALL_MOD_PATH="${pkgdir}" modules_install
# remove build link
rm -f "${pkgdir}"/lib/modules/${_kernver}/build
# remove the firmware
rm -rf "${pkgdir}/lib/firmware"
# move module tree /lib -> /usr/lib
mkdir -p "${pkgdir}/usr"
mv "${pkgdir}/lib" "${pkgdir}/usr/"
# add vmlinux
install -D -m644 vmlinux "${pkgdir}/usr/lib/modules/${_kernver}/build/vmlinux"
# add vmlinuz in /usr/lib/modules/ and info for correct hook triggers
cp arch/$KARCH/boot/bzImage "${pkgdir}/usr/lib/modules/${_kernver}/vmlinuz"
echo ${pkgbase} > "${pkgdir}/usr/lib/modules/${_kernver}/pkgbase"
# add System.map
install -D -m644 System.map "${pkgdir}/boot/System.map-${_kernver}"
}
_package-headers() {
pkgdesc="Header files and scripts for building modules for the slimmed down linux kernel."
msg2 "installing modfiles"
install -dm755 "${pkgdir}/usr/lib/modules/${_kernver}"
cd "${_srcname}"
install -D -m644 Makefile \
"${pkgdir}/usr/lib/modules/${_kernver}/build/Makefile"
install -D -m644 kernel/Makefile \
"${pkgdir}/usr/lib/modules/${_kernver}/build/kernel/Makefile"
install -D -m644 .config \
"${pkgdir}/usr/lib/modules/${_kernver}/build/.config"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include"
msg2 "looping mods for including in build"
for i in $(ls include/); do
cp -a include/${i} "${pkgdir}/usr/lib/modules/${_kernver}/build/include/"
done
# copy arch includes for external modules
msg2 "copy arch includes"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/x86"
cp -a arch/x86/include "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/x86/"
# copy files necessary for later builds, like nvidia and vmware
msg2 "copy files for later builds"
cp Module.symvers "${pkgdir}/usr/lib/modules/${_kernver}/build"
cp -a scripts "${pkgdir}/usr/lib/modules/${_kernver}/build"
# fix permissions on scripts dir
msg2 "fix perms on scripts dir"
echo "makedir tmp_versions"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/.tmp_versions"
echo "makedir buildarchkernel"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/kernel"
# add kernel files to headers
msg2 "add kernel files to headers"
cp arch/${KARCH}/Makefile "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/"
cp arch/${KARCH}/kernel/asm-offsets.s "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/kernel/"
# add dm headers
msg2 "add dm headers"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/md"
cp drivers/md/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/md"
# add inotify.h
msg2 "add inotify.h"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux"
cp include/linux/inotify.h "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux/"
# copy in Kconfig files
msg2 "copy in Kconfig files"
for i in $(find . -name "Kconfig*"); do
mkdir -p "${pkgdir}"/usr/lib/modules/${_kernver}/build/`echo ${i} | sed 's|/Kconfig.*||'`
cp ${i} "${pkgdir}/usr/lib/modules/${_kernver}/build/${i}"
done
# Fix file conflicts with -doc package
msg2 "Fix file conflicts with doc package"
rm "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/kbuild"/Kconfig.*-*
rm "${pkgdir}/usr/lib/modules/${_kernver}/build/Documentation/Kconfig"
# Add objtool for CONFIG_STACK_VALIDATION
msg2 "add objtool for stack validation"
mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/tools"
cp -a tools/objtool "${pkgdir}/usr/lib/modules/${_kernver}/build/tools"
chown -R root:root "${pkgdir}/usr/lib/modules/${_kernver}/build"
find "${pkgdir}/usr/lib/modules/${_kernver}/build" -type d -exec chmod 755 {} \;
# strip scripts directory
msg2 "strip scripts directory"
find "${pkgdir}/usr/lib/modules/${_kernver}/build/scripts" -type f -perm -u+w 2>/dev/null | while read binary ; do
case "$(file -bi "${binary}")" in
*application/x-sharedlib*) # Libraries (.so)
/usr/bin/strip ${STRIP_SHARED} "${binary}";;
*application/x-archive*) # Libraries (.a)
/usr/bin/strip ${STRIP_STATIC} "${binary}";;
*application/x-executable*) # Binaries
/usr/bin/strip ${STRIP_BINARIES} "${binary}";;
esac
done
# remove unneeded architectures
msg2 "remove folly archs"
while read modarch; do
rm -rf $modarch
done <<< $(find "${pkgdir}"/usr/lib/modules/${_kernver}/build/arch/ -maxdepth 1 -mindepth 1 -type d | grep -v /x86$)
}
pkgname=("${pkgbase}" "${pkgbase}-headers")
for _p in ${pkgname[@]}; do
eval "package_${_p}() {
$(declare -f "_package${_p#${pkgbase}}")
_package${_p#${pkgbase}}
}"
done
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