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# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
pkgname=linux-rpi
pkgver=6.6.21
case $pkgver in
*.*.*) _kernver=${pkgver%.*};;
*.*) _kernver=$pkgver;;
esac
pkgrel=0
pkgdesc="Linux kernel with Raspberry Pi patches"
url=https://github.com/raspberrypi/linux
depends="initramfs-generator linux-firmware-brcm"
_depends_dev="perl gmp-dev elfutils-dev bash mpc1-dev mpfr-dev"
makedepends="$_depends_dev gcc>=13.1.1_git20230603 sed installkernel bc linux-headers linux-firmware
bison flex openssl-dev>3 findutils xz
"
options="!strip !check"
_rpi_repo="https://github.com/raspberrypi/linux.git"
_linux_repo="https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
source="https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/linux-$_kernver.tar.xz
https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/patch-$pkgver.xz
https://dev.alpinelinux.org/archive/rpi-patches/rpi-$pkgver-alpine.patch
common-changes.config
"
arch="armhf armv7 aarch64"
license="GPL-2.0-only"
_flavors="rpi"
for _f in $_flavors; do
if [ "linux-$_f" != "$pkgname" ]; then
subpackages="$subpackages linux-$_f::$CBUILD_ARCH"
fi
subpackages="$subpackages linux-$_f-dev:_dev:$CBUILD_ARCH"
done
case "$CARCH" in
aarch64) _carch="arm64" ;;
arm*) _carch="arm" ;;
esac
prepare() {
local _patch_failed=
cd "$srcdir"/linux-$_kernver
if [ "${pkgver%.0}" = "$pkgver" ]; then
msg "Applying patch-$pkgver.xz"
unxz -c < "$srcdir"/patch-$pkgver.xz | patch -p1 -N
fi
# first apply patches in specified order
for i in $source; do
case $i in
*.patch)
msg "Applying $i..."
if ! patch -s -p1 -N -i "$srcdir"/${i##*/}; then
echo $i >>failed
_patch_failed=1
fi
;;
esac
done
if ! [ -z "$_patch_failed" ]; then
error "The following patches failed:"
cat failed
return 1
fi
# remove localversion from patch if any
rm -f localversion*
local flavor=
for flavor in $_flavors; do
local _builddir="$srcdir"/build-$flavor.$CARCH
mkdir -p "$_builddir"
echo "-$pkgrel-$flavor" > "$_builddir"/localversion-alpine
_genconfig $flavor
make -C "$srcdir"/linux-$_kernver \
O="$_builddir" \
ARCH="$_carch" \
olddefconfig
_verifyconfig $flavor
done
}
# generate config from defconfig and apply local changes.
# common-changes.config holds a list of = delimited
# config command and values used by kernel scripts/config script.
_genconfig() {
local flavor=$1 defconfig=
local builddir="$srcdir"/build-$flavor.$CARCH
local defconfig=
case "$CARCH" in
armhf) defconfig=bcmrpi_defconfig;;
armv7) defconfig=bcm2709_defconfig;;
aarch64) defconfig=bcm2711_defconfig;;
*) die "Unknown CARCH: $CARCH" ;;
esac
cp "$srcdir"/linux-$_kernver/arch/$_carch/configs/$defconfig \
"$builddir"/.config
while read line; do
# skip comments
case "$line" in
"#"*) continue;;
esac
local option=${line%%=*} str=
local cmd=$(echo $line | cut -d= -f2)
case "$cmd" in
y) cmd="enable";;
n) cmd="disable";;
m) cmd="module";;
'"'*) cmd="set-str"; str="${line#*=}";;
[0-9]*) cmd="set-val"; str="${line#*=}";;
*) die "Command $cmd not accepted" ;;
esac
msg "[$flavor] $cmd: $option $str"
"$srcdir"/linux-$_kernver/scripts/config \
--file "$builddir"/.config \
--$cmd "$option" "${str//\"/}"
done < "$srcdir"/common-changes.config
}
# verify if options are set to correct value
_verifyconfig() {
local flavor=$1
local builddir="$srcdir"/build-$flavor.$CARCH
while read line; do
[ ${line:0:1} = "#" ] && continue
local option=${line%%=*} str= invert=
local cmd=$(echo $line | cut -d= -f2)
case "$cmd" in
enable) str="$option=y" ;;
disable) str="$option"; invert="-v" ;;
module) str="$option=m" ;;
set-val) str="$option=${line##*=}" ;;
set-str) str=${line##*=}
str="$option=\"${str//\"/}\"" ;;
esac
grep -q $invert "^$str" "$builddir"/.config || \
die "Config: $option not properly set!"
done < "$srcdir"/common-changes.config
}
build() {
unset LDFLAGS
# for some reason these sometimes leak into the kernel build,
# -Werror=format-security breaks some stuff
unset CFLAGS CPPFLAGS CXXFLAGS
for i in $_flavors; do
cd "$srcdir"/build-$i.$CARCH
local _kver=$(make kernelversion)
if [ "$_kver" != "$pkgver" ]; then
error "Version in Makefile ($_kver) does not correspond with pkgver ($pkgver)"
return 1
fi
make ARCH="$_carch" CC="${CC:-gcc}" \
KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine"
done
}
_package() {
local _buildflavor="$1" _outdir="$2"
local _builddir="$srcdir"/build-$_buildflavor.$CARCH
cd "$_builddir"
local _abi_release="$(make -s kernelrelease)"
mkdir -p "$_outdir"/boot "$_outdir"/lib/modules
local _install
case "$CARCH" in
arm*)
_install="zinstall dtbs_install"
;;
aarch64)
_install="install dtbs_install"
;;
*)
_install=install
;;
esac
# modules_install seems to regenerate a defect Modules.symvers. Work
# around it by backing it up and restore it after modules_install
cp Module.symvers Module.symvers.backup
local INSTALL_DTBS_PATH="$_outdir"/boot
make modules_install $_install \
ARCH="$_carch" \
INSTALL_MOD_PATH="$_outdir" \
INSTALL_PATH="$_outdir"/boot \
INSTALL_DTBS_PATH="$INSTALL_DTBS_PATH"
cp Module.symvers.backup Module.symvers
rm -f "$_outdir"/lib/modules/$_abi_release/build \
"$_outdir"/lib/modules/$_abi_release/source
rm -rf "$_outdir"/lib/firmware
install -D -m644 include/config/kernel.release \
"$_outdir"/usr/share/kernel/$_buildflavor/kernel.release
# allow the initramfs generators to know the package name the kernel came from
echo "${subpkgname:-$pkgname}" > "$_outdir"/lib/modules/$_abi_release/pkgname
if [ "$CARCH" = "aarch64" ]; then
mv -f "$INSTALL_DTBS_PATH"/broadcom/*.dtb \
"$INSTALL_DTBS_PATH"
rmdir "$INSTALL_DTBS_PATH"/broadcom
fi
}
# main flavor installs in $pkgdir
package() {
case "$CARCH" in
armv7)
provides="linux-rpi2=$pkgver-r$pkgrel" # for backward compatibility
replaces="linux-rpi2" # for backward compatibility
;;
aarch64)
provides="linux-rpi4=$pkgver-r$pkgrel" # for backward compatibility
replaces="linux-rpi4" # for backward compatibility
;;
esac
_package rpi "$pkgdir"
}
_dev() {
local _flavor=$(echo $subpkgname | sed -E 's/(^linux-|-dev$)//g')
local _builddir="$srcdir"/build-$_flavor.$CARCH
cd "$_builddir"
local _abi_release="$(make -s kernelrelease)"
# copy the only the parts that we really need for build 3rd party
# kernel modules and install those as /usr/src/linux-headers,
# simlar to what ubuntu does
#
# this way you dont need to install the 300-400 kernel sources to
# build a tiny kernel module
#
pkgdesc="Headers and script for third party modules for $_flavor kernel"
depends="$_depends_dev"
# handle backward compatibility with legacy flavors
case "$_flavor" in
rpi)
case "$CARCH" in
armv7)
provides="linux-rpi2-dev=$pkgver-r$pkgrel"
replaces="linux-rpi2-dev"
;;
aarch64)
provides="linux-rpi4-dev=$pkgver-r$pkgrel"
replaces="linux-rpi4-dev"
;;
esac
;;
*) die "Unknown flavor: $flavor" ;;
esac
local dir="$subpkgdir"/usr/src/linux-headers-$_abi_release
# first we import config, run prepare to set up for building
# external modules, and create the scripts
mkdir -p "$dir"
cp "$_builddir"/.config "$dir"/.config
echo "-$pkgrel-$_flavor" > "$dir"/localversion-alpine
make -j1 -C "$srcdir"/linux-$_kernver ARCH="$_carch" O="$dir" \
syncconfig prepare modules_prepare scripts
# remove the stuff that points to real sources. we want 3rd party
# modules to believe this is the soruces
rm "$dir"/Makefile "$dir"/source
# copy the needed stuff from real sources
#
# this is taken from ubuntu kernel build script
# http://kernel.ubuntu.com/git/ubuntu/ubuntu-zesty.git/tree/debian/rules.d/3-binary-indep.mk
cd "$srcdir"/linux-$_kernver
find . -path './include/*' -prune \
-o -path './scripts/*' -prune -o -type f \
\( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
-name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \
-print | cpio -pdm "$dir"
cp -a scripts include "$dir"
find $(find arch -name include -type d -print) -type f \
| cpio -pdm "$dir"
install -Dm644 "$_builddir"/Module.symvers \
"$dir"/Module.symvers
mkdir -p "$subpkgdir"/lib/modules/$_abi_release
ln -sf /usr/src/linux-headers-$_abi_release \
"$subpkgdir"/lib/modules/$_abi_release/build
}
sha512sums="
458b2c34d46206f9b4ccbac54cc57aeca1eaecaf831bc441e59701bac6eadffc17f6ce24af6eadd0454964e843186539ac0d63295ad2cc32d112b60360c39a35 linux-6.6.tar.xz
e7c8e640fc519d6c92cd13985a7e37d2c8fe0277b7386a9f861c39a6f164d815133b5fb02a691d43c7b79563b09d6ea78674af0ccecfef1b418f4d03bf52a9bc patch-6.6.21.xz
cd73e92fbd2fe47bd756eeaae06b3927813bca528c2aecc7e5833797f0bb1d24cd15dec762088b1faaa8ca9785d8d30027aa6b4a419d030a7f1c7d078c8d6486 rpi-6.6.21-alpine.patch
f014a9b3574df17a3f6e0d8a2c48aef4239f33a062d64704fd56ecd596d090bb0413c8cb2abd6ec3ceeee09fa66243b6a3f7b405657edbd9c7a6407d6ec79fef common-changes.config
"
|