# Maintainer: Gunnar Bretthauer <taijian@posteo.de>
# Contributor: Dragonn <dragonn@op.pl>
# Contributor: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>

pkgbase=linux-g14
pkgver=6.8.7.arch1
pkgrel=2
pkgdesc='Linux-g14'
url="https://gitlab.com/dragonn/linux-g14.git"
_url='https://github.com/archlinux/linux'
arch=(x86_64)
license=(GPL-2.0-only)
makedepends=(
  bc
  cpio
  gettext
  git
  libelf
  pahole
  perl
  python
  tar
  xz
#  modprobed-db
)
options=('!strip' '!debug')
_srcname=linux-${pkgver%.*}
_srctag=v${pkgver%.*}-${pkgver##*.}
source=(
  https://cdn.kernel.org/pub/linux/kernel/v${pkgver%%.*}.x/$_srcname.tar.{xz,sign}
  $_url/releases/download/$_srctag/linux-$_srctag.patch.zst{,.sig}
  config         # the main kernel config file
#  modprobed.db
  "choose-gcc-optimization.sh"

  "sys-kernel_arch-sources-g14-6.8+--more-uarches-for-kernel.patch"::"https://raw.githubusercontent.com/graysky2/kernel_compiler_patch/master/more-uarches-for-kernel-6.8-rc4%2B.patch"

  0001-acpi-proc-idle-skip-dummy-wait.patch

  0027-mt76_-mt7921_-Disable-powersave-features-by-default.patch
  
  0001-linux6.8.y-bore4.5.0.patch
  
  0032-Bluetooth-btusb-Add-a-new-PID-VID-0489-e0f6-for-MT7922.patch
  0035-Add_quirk_for_polling_the_KBD_port.patch

  0001-ACPI-resource-Skip-IRQ-override-on-ASUS-TUF-Gaming-A.patch
  0002-ACPI-resource-Skip-IRQ-override-on-ASUS-TUF-Gaming-A.patch

  v2-0005-platform-x86-asus-wmi-don-t-allow-eGPU-switching-.patch

  0038-mediatek-pci-reset.patch
  0040-workaround_hardware_decoding_amdgpu.patch

  0001-platform-x86-asus-wmi-Support-2023-ROG-X16-tablet-mo.patch
  amd-tablet-sfh.patch

  0001-v4-platform-x86-asus-wmi-add-support-for-2024-ROG-Mini-LED.patch
  0002-v4-platform-x86-asus-wmi-add-support-for-Vivobook-GPU-MUX.patch
  0003-v4-platform-x86-asus-wmi-add-support-variant-of-TUF-RGB.patch
  0004-v4-platform-x86-asus-wmi-support-toggling-POST-sound.patch
  0005-v4-platform-x86-asus-wmi-store-a-min-default-for-ppt-op.patch
  0006-v4-platform-x86-asus-wmi-adjust-formatting-of-ppt-fcts.patch
  0007-v4-platform-x86-asus-wmi-ROG-Ally-increase-wait-time.patch
  0008-v4-platform-x86-asus-wmi-add-support-for-MCU-powersave.patch
  0009-v4-platform-x86-asus-wmi-add-clean-up-structs.patch
  
  0001-HID-asus-fix-more-n-key-report-descriptors-if-n-key-.patch
  0001-platform-x86-asus-wmi-add-support-for-vivobook-fan-p.patch
  0002-HID-asus-make-asus_kbd_init-generic-remove-rog_nkey_.patch
  0003-HID-asus-add-ROG-Ally-N-Key-ID-and-keycodes.patch
  0004-HID-asus-add-ROG-Z13-lightbar.patch
  
  #0060-ALSA_hda-realtek_Add_quirks_for_ASUS_Laptops_using_CS35L56.patch
  
  "sys-kernel_arch-sources-g14_files-0047-asus-nb-wmi-Add-tablet_mode_sw-lid-flip.patch"
  "sys-kernel_arch-sources-g14_files-0048-asus-nb-wmi-fix-tablet_mode_sw_int.patch"
)
validpgpkeys=(
  ABAF11C65A2970B130ABE3C479BE3E4300411886  # Linus Torvalds
  647F28654894E3BD457199BE38DBBDC86092693E  # Greg Kroah-Hartman
  83BC8889351B5DEBBB68416EB8AC08600F108CDF  # Jan Alexander Steffens (heftig)
)

sha256sums=('291d1a1faf4e87b3b0ea9729080db887aafd1ff2fac1430ceca921e46bc22fae'
            'SKIP'
            'a49b47f89187d2fce6c79f263683bc06b152974b4cf8d8faee535e4bcf04adc7'
            'SKIP'
            '2fc20cbd7c4f7f3eeeba73b8e354cecb8757050d2c774992959f93ccde16d667'
            '278118011d7a2eeca9971ac97b31bf0c55ab55e99c662ab9ae4717b55819c9a2'
            'd69232afd0dd6982ae941cf2d1f577f4be2011e3bb847d1db37952acf416b5d3'
            '0a7ea482fe20c403788d290826cec42fe395e5a6eab07b88845f8b9a9829998d'
            'ed242f4be3f8eaade2a1d42157c5c6c86281917a08ae43221b088fafdc775ee7'
            '09883311108d461da63a04012d7a2b7f6a4165ee0c4e9cb7a5dc3f9ade326fc7'
            'a8e1e11a4ab1995cc4975c9b134a43ddfe7054ef0c965e52a7d8f9223e15c3e0'
            '315d1839630b37894a626bbc2aea012618b2e1ccb6f9d8aa27c0a3ce5e90e99c'
            'a00b952d53df9d3617d93e8fba4146a4d6169ebe79f029b3a55cca68f738d8ea'
            '4912b1319e46ddd6670147f5e878b4aca8bcfbd7b5c852fe11e434e424666365'
            '9f98765b43f5f31b33ed05f3611508113b02518e680ee82b251de80dae2e141d'
            'd673d034fbcd80426fd8d9c6af56537c5fe5b55fe49d74e313474d7fc285ecc1'
            'e41198b29cee4de7a5132d8df606f48c2d0f9c9076fe4230b00a33c7e0b22c71'
            '1edb362a762c8858374027e30ff58ae0014e117fdc05cc7db6da50f80e7aab87'
            '508f90cbe81a9a145cc540703470f1e6b5d21c7a7b9166d2ce6e56b401262b04'
            'feaf5f5fb62e25e2369f92f77e8327dcd4cb4cf4bc6d0c91d9c7bc40c0f4de46'
            'b9866121c69ce22b4651b3ef2a1956e6d0547e40a14d1224e2f367a4f716ca1a'
            '6f2f248a5ac9b1a37324cbce8d29a65b22a2b20d4b3564c0dc6063789ae733ba'
            '28f2b9bf5a1f4993bdc77d4d8ac32c1905edfeb3f4cce476f0f85a31b573bcd0'
            'fa8de80231c933ca294315168d985ae18261e04e77ef17482c815a0703d6c5fb'
            '62b297619e500b4453e2f3e0305c4dfb92185f69ebbdb67f99e8f76dad139f7a'
            'c2c89baaf134c0151c3f7a3861d16194e32c91c7abc87f870733cab8c5b88389'
            'f5b560d988c47033c44307da0b584599d1f59cc0028a594f4df87affffc219d5'
            'de85da760f6692b284e39aa78479904d6ee78b349f1e98d1d210777f9ef17581'
            '3be072ed798becd91bae66a75d09235c9cb5e84547b1f4eb7768e954ba109e92'
            '93c9a77f6c25494cecbe6b236bd2179065d5f5db5589dabaa425134c1a8c3481'
            'c1d96328d96964c2ce3ef7609fb7c07e97eb136dfab9f6d4efcce072a5739838'
            '2414dc71174c90b92f975a7d16cabc99ba509397d843132764ea9ee91b643dc0'
            '107a08aa610d3ba3c7ecec301df2ea8f345bc74107fcf4dac96fe9e89a23dcf1'
            '15e912a66e4bbce1cf0450f1dc6610653df29df8dd6d5426f9c1b039490436c8'
            '444f2d86de8c2177655b01596f939f99c2e7abfa8efad8a509e0a334f42dfa85')

# notable microarch levels:
#
# 14, Zen2 = CONFIG_MZEN2
# 15, Zen3 = CONFIG_MZEN3
# 38, Skylake (Comet Lake laptops) = CONFIG_MSKYLAKE
# 93, x86-64-v3 (package default) = CONFIG_GENERIC_CPU3
# 98, Intel Native = CONFIG_MNATIVE_INTEL
# 99, AMD Native = CONFIG_MNATIVE_AMD
if [ -z ${_microarchitecture+x} ]; then
  _microarchitecture=93
fi
if [ -z ${Microarchitecture+x} ]; then
  Microarchitecture='CONFIG_GENERIC_CPU3'
fi

export KBUILD_BUILD_HOST=archlinux
export KBUILD_BUILD_USER=$pkgbase
export KBUILD_BUILD_TIMESTAMP="$(date -Ru${SOURCE_DATE_EPOCH:+d @$SOURCE_DATE_EPOCH})"

prepare() {
  cd $_srcname

  echo "Setting version..."
  echo "-$pkgrel" > localversion.10-pkgrel
  echo "${pkgbase#linux}" > localversion.20-pkgname

  local src
  for src in "${source[@]}"; do
    src="${src%%::*}"
    src="${src##*/}"
    src="${src%.zst}"
    [[ $src = *.patch ]] || continue
    echo "Applying patch $src..."
    patch -Np1 < "../$src"
  done

  # if throw is defined we had a hard patch failure, propagate it and stop so we can address
  [[ -z "$_throw" ]]

  echo "Setting config..."
  cp ../config .config
  make olddefconfig
  diff -u ../config .config || :
  
  ## Make use of modprobed-db, if installed
  ## To do this, you need to copy the database into this directory and enable the relevant lines 
  ## at the top of this file!
  # make LSMOD=../modprobed.db localmodconfig 

  ## let user choose microarchitecture optimization in GCC  
  ## this needs to run *after* `make olddefconfig` so that our newly added configuration macros exist
  sh ${srcdir}/choose-gcc-optimization.sh $_microarchitecture
 
  make -s kernelrelease > version
  echo "Prepared $pkgbase version $(<version)"
  
  ## Here comes a section where you can uncomment additional modules that you do not need on your machine
  ## in order to speed up building the kernel
  
  ## Enable this, if your systems is ALL AMD
  # scripts/config --disable CONFIG_DRM_I915 \
  #                --disable CONFIG_DRM_GMA500 \
  #                --disable CONFIG_PINCTRL_INTEL \
  #                --disable CONFIG_AGP_INTEL \
  #                --disable CONFIG_INTEL_GTT \
  #                --disable CONFIG_SND_INTEL_NHLT \
  #                --disable CONFIG_SND_SOC_SOF_INTEL_TOPLEVEL \
  #                --disable CONFIG_SND_SOC_INTEL_SST_TOPLEVEL \
  #                --disable CONFIG_SND_SOC_INTEL_MACH \
  #                --disable CONFIG_INTEL_WMI \
  #                --disable CONFIG_INTEL_IOMMU

  scripts/config --enable CONFIG_PINCTRL_AMD
  scripts/config --enable CONFIG_X86_AMD_PSTATE
  scripts/config --module CONFIG_AMD_PMC

  scripts/config --disable CONFIG_MODULE_COMPRESS_NONE \
                 --enable CONFIG_MODULE_COMPRESS_ZSTD

  ## SET default LRU parameters
  scripts/config --enable CONFIG_LRU_GEN
  scripts/config --enable CONFIG_LRU_GEN_ENABLED
  scripts/config --disable CONFIG_LRU_GEN_STATS
  scripts/config --set-val CONFIG_NR_LRU_GENS 7
  scripts/config --set-val CONFIG_TIERS_PER_GEN 4

  # DISABLE not need modules on ROG laptops
  # XXX: I'm going to make an opinionated decision here and save everyone some compilation time
  # XXX: on drivers almost no-one is going to use; if you need any of theese turn them on in myconfig
  scripts/config  --disable CONFIG_INFINIBAND \
                  --disable CONFIG_DRM_NOUVEAU \
                  --disable CONFIG_DRM_RADEON \
                  --disable CONFIG_IIO \
                  --disable CONFIG_CAN_DEV \
                  --disable CONFIG_PCMCIA_WL3501 \
                  --disable CONFIG_PCMCIA_RAYCS \
                  --disable CONFIG_IWL3945 \
                  --disable CONFIG_IWL4965 \
                  --disable CONFIG_IPW2200 \
                  --disable CONFIG_IPW2100 \
                  --disable CONFIG_FB_NVIDIA \
                  --disable CONFIG_SENSORS_ASUS_EC \
                  --disable CONFIG_SENSORS_ASUS_WMI_EC

  # select slightly more sane block device driver options; NVMe really should be built in 
  scripts/config  --disable CONFIG_RAPIDIO \
                  --module CONFIG_CDROM \
                  --disable CONFIG_PARIDE \

  # bake in s0ix debugging parameters so we get useful problem reports re: suspend
  scripts/config  --enable CONFIG_CMDLINE_BOOL \
                  --set-str CONFIG_CMDLINE "makepkgplaceholderyolo" \
                  --disable CMDLINE_OVERRIDE

  # enable back EFI_HANDOVER_PROTOCOL and EFI_STUB
  scripts/config  --enable CONFIG_EFI_HANDOVER_PROTOCOL \
                  --enable CONFIG_EFI_STUB

  # try to fix stuttering on some ROG laptops
  scripts/config --disable CONFIG_HW_RANDOM_TPM

  # HACK: forcibly fixup CONFIG_CMDLINE here as using scripts/config mangles escaped quotes
  sed -i 's#makepkgplaceholderyolo#ibt=off pm_debug_messages amd_pmc.dyndbg=\\"+p\\" acpi.dyndbg=\\"file drivers/acpi/x86/s2idle.c +p\\"#' .config

  # Note the double escaped quotes above, sed strips one; the final result in .config needs to contain single slash
  # escaped quotes (eg: `CONFIG_CMDLINE="foo.dyndbg=\"+p\""`) to avoid dyndbg parse errors at boot. This is impossible
  # with the current kernel config script.
}

build() {
  cd $_srcname
  make all
  make -C tools/bpf/bpftool vmlinux.h feature-clang-bpf-co-re=1
}

_package() {
  pkgdesc="The $pkgdesc kernel and modules"
  depends=(
    coreutils
    initramfs
    kmod
  )
  optdepends=(
    'wireless-regdb: to set the correct wireless channels of your country'
    'linux-firmware: firmware images needed for some devices'
  )
  provides=(
    KSMBD-MODULE
    VIRTUALBOX-GUEST-MODULES
    WIREGUARD-MODULE
  )
  replaces=(
    virtualbox-guest-modules-arch
    wireguard-arch
  )

  cd $_srcname
  local modulesdir="$pkgdir/usr/lib/modules/$(<version)"

  echo "Installing boot image..."
  # systemd expects to find the kernel here to allow hibernation
  # https://github.com/systemd/systemd/commit/edda44605f06a41fb86b7ab8128dcf99161d2344
  install -Dm644 "$(make -s image_name)" "$modulesdir/vmlinuz"

  # Used by mkinitcpio to name the kernel
  echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"
  echo "#!/bin/bash" > ignore_depmod
  chmod +x ignore_depmod
  echo "Installing modules..."
  ZSTD_CLEVEL=19 make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 \
    DEPMOD=./ignore_depmod modules_install  # Suppress depmod

  # remove build link
  rm "$modulesdir"/build || true
}

_package-headers() {
  pkgdesc="Headers and scripts for building modules for the $pkgdesc kernel"
  provides=(linux-rog-headers)
  depends=(pahole)

  cd $_srcname
  local builddir="$pkgdir/usr/lib/modules/$(<version)/build"

  echo "Installing build files..."
  install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
    localversion.* version vmlinux tools/bpf/bpftool/vmlinux.h
  install -Dt "$builddir/kernel" -m644 kernel/Makefile
  install -Dt "$builddir/arch/x86" -m644 arch/x86/Makefile
  cp -t "$builddir" -a scripts

  # required when STACK_VALIDATION is enabled
  install -Dt "$builddir/tools/objtool" tools/objtool/objtool

  # required when DEBUG_INFO_BTF_MODULES is enabled
  install -Dt "$builddir/tools/bpf/resolve_btfids" tools/bpf/resolve_btfids/resolve_btfids

  echo "Installing headers..."
  cp -t "$builddir" -a include
  cp -t "$builddir/arch/x86" -a arch/x86/include
  install -Dt "$builddir/arch/x86/kernel" -m644 arch/x86/kernel/asm-offsets.s

  install -Dt "$builddir/drivers/md" -m644 drivers/md/*.h
  install -Dt "$builddir/net/mac80211" -m644 net/mac80211/*.h

  # https://bugs.archlinux.org/task/13146
  install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h

  # https://bugs.archlinux.org/task/20402
  install -Dt "$builddir/drivers/media/usb/dvb-usb" -m644 drivers/media/usb/dvb-usb/*.h
  install -Dt "$builddir/drivers/media/dvb-frontends" -m644 drivers/media/dvb-frontends/*.h
  install -Dt "$builddir/drivers/media/tuners" -m644 drivers/media/tuners/*.h

  # https://bugs.archlinux.org/task/71392
  install -Dt "$builddir/drivers/iio/common/hid-sensors" -m644 drivers/iio/common/hid-sensors/*.h

  echo "Installing KConfig files..."
  find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;

  echo "Removing unneeded architectures..."
  local arch
  for arch in "$builddir"/arch/*/; do
    [[ $arch = */x86/ ]] && continue
    echo "Removing $(basename "$arch")"
    rm -r "$arch"
  done

  echo "Removing documentation..."
  rm -r "$builddir/Documentation"

  echo "Removing broken symlinks..."
  find -L "$builddir" -type l -printf 'Removing %P\n' -delete

  echo "Removing loose objects..."
  find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete

  echo "Stripping build tools..."
  local file
  while read -rd '' file; do
    case "$(file -Sib "$file")" in
      application/x-sharedlib\;*)      # Libraries (.so)
        strip -v $STRIP_SHARED "$file" ;;
      application/x-archive\;*)        # Libraries (.a)
        strip -v $STRIP_STATIC "$file" ;;
      application/x-executable\;*)     # Binaries
        strip -v $STRIP_BINARIES "$file" ;;
      application/x-pie-executable\;*) # Relocatable binaries
        strip -v $STRIP_SHARED "$file" ;;
    esac
  done < <(find "$builddir" -type f -perm -u+x ! -name vmlinux -print0)

  echo "Stripping vmlinux..."
  strip -v $STRIP_STATIC "$builddir/vmlinux"

  echo "Adding symlink..."
  mkdir -p "$pkgdir/usr/src"
  ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"
}


pkgname=("$pkgbase" "$pkgbase-headers")
for _p in "${pkgname[@]}"; do
  eval "package_$_p() {
    $(declare -f "_package${_p#$pkgbase}")
    _package${_p#$pkgbase}
  }"
done

# vim:set ts=8 sts=2 sw=2 et: