# ARMv7 multi-platform
# Maintainer: Kevin Mihelich <kevin@archlinuxarm.org>

buildarch=4

pkgbase=linux-armv7
_srcname=linux-4.20
_kernelname=${pkgbase#linux}
_desc="ARMv7 multi-platform"
pkgver=4.20.2
pkgrel=2
rcnrel=armv7-x3
arch=('armv7h')
url="http://www.kernel.org/"
license=('GPL2')
makedepends=('xmlto' 'docbook-xsl' 'kmod' 'inetutils' 'bc' 'git' 'uboot-tools' 'vboot-utils' 'dtc')
options=('!strip')
source=("http://www.kernel.org/pub/linux/kernel/v4.x/${_srcname}.tar.xz"
        "http://www.kernel.org/pub/linux/kernel/v4.x/patch-${pkgver}.xz"
        "http://rcn-ee.com/deb/sid-armhf/v${pkgver}-${rcnrel}/patch-${pkgver%.0}-${rcnrel}.diff.gz"
        '0001-ARM-atags-add-support-for-Marvell-s-u-boot.patch'
        '0002-ARM-atags-fdt-retrieve-MAC-addresses-from-Marvell-bo.patch'
        '0003-SMILE-Plug-device-tree-file.patch'
        '0004-fix-mvsdio-eMMC-timing.patch'
        '0005-net-smsc95xx-Allow-mac-address-to-be-set-as-a-parame.patch'
        '0006-set-default-cubietruck-led-triggers.patch'
        '0007-exynos4412-odroid-set-higher-minimum-buck2-regulator.patch'
        '0008-ARM-dove-enable-ethernet-on-D3Plug.patch'
        '0009-media-s5p-mfc-fix-incorrect-bus-assignment-in-virtua.patch'
        'config'
        'kernel.its'
        'kernel.keyblock'
        'kernel_data_key.vbprivk'
        'linux.preset'
        '60-linux.hook'
        '90-linux.hook')
md5sums=('d39dd4ba2d5861c54b90d49be19eaf31'
         '17eb4912f0e4141e8a0dc02dd4432bb6'
         '10154f97faeb65748a31806a85481933'
         'a9f76b75f18f89d535bbbe357c08f70e'
         '40708505c237608fbc3923a714f8ffcb'
         '339f1a7d7242c8639f33f6acd370f761'
         'f276f1bfdd926516db36c81096eb6914'
         '32ba1be48b4305dde4a3503097f1ad10'
         '37c972c5bc79514b85846d5f1b13838a'
         'c5fce59d890676702244170c2736dcb1'
         '2907befef7c5dc788ceb5a99fdefd23c'
         '2faa70647c4965b32e9f0f597614fcbf'
         '6b95ea40314c5531cea810e3a16e02f9'
         '4f2379ed84258050edb858ee8d281678'
         '61c5ff73c136ed07a7aadbf58db3d96a'
         '584777ae88bce2c5659960151b64c7d8'
         '86d4a35722b5410e3b29fc92dae15d4b'
         'ce6c81ad1ad1f8b333fd6077d47abdaf'
         '3e2a512f8da5db5fe9f17875405e56a3')

prepare() {
  cd "${srcdir}/${_srcname}"

  # add upstream patch
  git apply --whitespace=nowarn ../patch-${pkgver}

  # RCN patch
  git apply ../patch-${pkgver%.0}-${rcnrel}.diff

  # ALARM patches
  git apply ../0001-ARM-atags-add-support-for-Marvell-s-u-boot.patch
  git apply ../0002-ARM-atags-fdt-retrieve-MAC-addresses-from-Marvell-bo.patch
  git apply ../0003-SMILE-Plug-device-tree-file.patch
  git apply ../0004-fix-mvsdio-eMMC-timing.patch
  git apply ../0005-net-smsc95xx-Allow-mac-address-to-be-set-as-a-parame.patch
  git apply ../0006-set-default-cubietruck-led-triggers.patch
  git apply ../0007-exynos4412-odroid-set-higher-minimum-buck2-regulator.patch
  git apply ../0008-ARM-dove-enable-ethernet-on-D3Plug.patch
  git apply ../0009-media-s5p-mfc-fix-incorrect-bus-assignment-in-virtua.patch

  cat "${srcdir}/config" > ./.config

  # add pkgrel to extraversion
  sed -ri "s|^(EXTRAVERSION =)(.*)|\1 \2-${pkgrel}|" Makefile

  # don't run depmod on 'make install'. We'll do this ourselves in packaging
  sed -i '2iexit 0' scripts/depmod.sh
}

build() {
  cd "${srcdir}/${_srcname}"

  # get kernel version
  make prepare

  # load configuration
  # Configure the kernel. Replace the line below with one of your choice.
  #make menuconfig # CLI menu for configuration
  #make nconfig # new CLI menu for configuration
  #make xconfig # X-based configuration
  #make oldconfig # using old config from previous kernel version
  # ... or manually edit .config

  # Copy back our configuration (use with new kernel version)
  #cp ./.config ../${pkgbase}.config

  ####################
  # stop here
  # this is useful to configure the kernel
  #msg "Stopping build"
  #return 1
  ####################

  #yes "" | make config

  # build!
  make ${MAKEFLAGS} zImage modules dtbs
}

_package() {
  pkgdesc="The Linux Kernel and modules - ${_desc}"
  depends=('coreutils' 'linux-firmware' 'kmod' 'mkinitcpio>=0.7')
  optdepends=('crda: to set the correct wireless channels of your country')
  backup=("etc/mkinitcpio.d/${pkgbase}.preset")
  provides=('kernel26' "linux=${pkgver}")
  conflicts=('linux')
  replaces=('linux-mvebu' 'linux-udoo' 'linux-sun4i' 'linux-sun5i' 'linux-sun7i' 'linux-usbarmory' 'linux-wandboard' 'linux-clearfog')
  install=${pkgname}.install

  cd "${srcdir}/${_srcname}"

  KARCH=arm

  # get kernel version
  _kernver="$(make kernelrelease)"
  _basekernel=${_kernver%%-*}
  _basekernel=${_basekernel%.*}

  mkdir -p "${pkgdir}"/{boot,usr/lib/modules}
  make INSTALL_MOD_PATH="${pkgdir}/usr" modules_install
  make INSTALL_DTBS_PATH="${pkgdir}/boot/dtbs" dtbs_install
  cp arch/$KARCH/boot/zImage "${pkgdir}/boot/zImage"

  # make room for external modules
  local _extramodules="extramodules-${_basekernel}${_kernelname}"
  ln -s "../${_extramodules}" "${pkgdir}/usr/lib/modules/${_kernver}/extramodules"

  # add real version for building modules and running depmod from hook
  echo "${_kernver}" |
    install -Dm644 /dev/stdin "${pkgdir}/usr/lib/modules/${_extramodules}/version"

  # remove build and source links
  rm "${pkgdir}"/usr/lib/modules/${_kernver}/{source,build}

  # now we call depmod...
  depmod -b "${pkgdir}/usr" -F System.map "${_kernver}"

  # sed expression for following substitutions
  local _subst="
    s|%PKGBASE%|${pkgbase}|g
    s|%KERNVER%|${_kernver}|g
    s|%EXTRAMODULES%|${_extramodules}|g
  "

  # install mkinitcpio preset file
  sed "${_subst}" ../linux.preset |
    install -Dm644 /dev/stdin "${pkgdir}/etc/mkinitcpio.d/${pkgbase}.preset"

  # install pacman hooks
  sed "${_subst}" ../60-linux.hook |
    install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/60-${pkgbase}.hook"
  sed "${_subst}" ../90-linux.hook |
    install -Dm644 /dev/stdin "${pkgdir}/usr/share/libalpm/hooks/90-${pkgbase}.hook"
}

_package-headers() {
  pkgdesc="Header files and scripts for building modules for linux kernel - ${_desc}"
  provides=("linux-headers=${pkgver}")
  conflicts=('linux-headers')
  replaces=('linux-mvebu-headers' 'linux-sun4i-headers' 'linux-sun5i-headers' 'linux-sun7i-headers' 'linux-usbarmory-headers' 'linux-wandboard-headers' 'linux-clearfog-headers')

  install -dm755 "${pkgdir}/usr/lib/modules/${_kernver}"

  cd "${srcdir}/${_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"

  for i in acpi asm-generic config crypto drm generated keys linux math-emu \
    media net pcmcia scsi soc sound trace uapi video xen; do
    cp -a include/${i} "${pkgdir}/usr/lib/modules/${_kernver}/build/include/"
  done

  # copy arch includes for external modules
  mkdir -p ${pkgdir}/usr/lib/modules/${_kernver}/build/arch/$KARCH
  cp -a arch/$KARCH/include ${pkgdir}/usr/lib/modules/${_kernver}/build/arch/$KARCH/
  for i in dove exynos omap2; do
    mkdir -p ${pkgdir}/usr/lib/modules/${_kernver}/build/arch/$KARCH/mach-${i}
    cp -a arch/$KARCH/mach-${i}/include ${pkgdir}/usr/lib/modules/${_kernver}/build/arch/$KARCH/mach-${i}/
  done
  for i in omap orion samsung versatile; do
    mkdir -p ${pkgdir}/usr/lib/modules/${_kernver}/build/arch/$KARCH/plat-${i}
    cp -a arch/$KARCH/plat-${i}/include ${pkgdir}/usr/lib/modules/${_kernver}/build/arch/$KARCH/plat-${i}/
  done

  # copy files necessary for later builds, like nvidia and vmware
  cp Module.symvers "${pkgdir}/usr/lib/modules/${_kernver}/build"
  cp -a scripts "${pkgdir}/usr/lib/modules/${_kernver}/build"

  # fix permissions on scripts dir
  chmod og-w -R "${pkgdir}/usr/lib/modules/${_kernver}/build/scripts"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/.tmp_versions"

  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/arch/${KARCH}/kernel"

  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
  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
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux"
  cp include/linux/inotify.h "${pkgdir}/usr/lib/modules/${_kernver}/build/include/linux/"

  # add wireless headers
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/net/mac80211/"
  cp net/mac80211/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/net/mac80211/"

  # add dvb headers for external modules
  # in reference to:
  # http://bugs.archlinux.org/task/11194
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/include/config/dvb/"
  cp include/config/dvb/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/include/config/dvb/"

  # add dvb headers for http://mcentral.de/hg/~mrec/em28xx-new
  # in reference to:
  # http://bugs.archlinux.org/task/13146
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
  cp drivers/media/dvb-frontends/lgdt330x.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/i2c/"
  cp drivers/media/i2c/msp3400-driver.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/i2c/"

  # add dvb headers
  # in reference to:
  # http://bugs.archlinux.org/task/20402
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/usb/dvb-usb"
  cp drivers/media/usb/dvb-usb/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/usb/dvb-usb/"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends"
  cp drivers/media/dvb-frontends/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/dvb-frontends/"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/tuners"
  cp drivers/media/tuners/*.h "${pkgdir}/usr/lib/modules/${_kernver}/build/drivers/media/tuners/"

  # add xfs and shmem for aufs building
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/fs/xfs"
  mkdir -p "${pkgdir}/usr/lib/modules/${_kernver}/build/mm"

  # 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

  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
  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
  rm -rf "${pkgdir}"/usr/lib/modules/${_kernver}/build/arch/{alpha,arc,arm26,arm64,avr32,blackfin,c6x,cris,frv,h8300,hexagon,ia64,m32r,m68k,m68knommu,metag,mips,microblaze,mn10300,openrisc,parisc,powerpc,ppc,s390,score,sh,sh64,sparc,sparc64,tile,unicore32,um,v850,x86,xtensa}
}

_package-smileplug() {
  pkgdesc="The Linux Kernel - ${_desc} - Marvell SMILE Plug"
  depends=('linux-armv7')
  provides=('linux-armv7-uimage')
  conflicts=('linux-armv7-uimage' 'linux-armv7-rc-uimage')
  replaces=('linux-mvebu-smileplug')

  cd "${srcdir}/${_srcname}"

  mkdir -p "${pkgdir}/boot"
  cat arch/$KARCH/boot/zImage arch/$KARCH/boot/dts/armada-370-smileplug.dtb > myimage
  mkimage -A arm -O linux -T kernel -C none -a 0x00008000 -e 0x00008000 -n "${pkgname}" -d myimage "${pkgdir}/boot/uImage"
}

_package-mirabox() {
  pkgdesc="The Linux Kernel - ${_desc} - Globalscale Mirabox"
  depends=('linux-armv7')
  provides=('linux-armv7-uimage')
  conflicts=('linux-armv7-uimage' 'linux-armv7-rc-uimage')
  replaces=('linux-mvebu-mirabox')

  cd "${srcdir}/${_srcname}"

  mkdir -p "${pkgdir}/boot"
  cat arch/$KARCH/boot/zImage arch/$KARCH/boot/dts/armada-370-mirabox.dtb > myimage
  mkimage -A arm -O linux -T kernel -C none -a 0x00008000 -e 0x00008000 -n "${pkgname}" -d myimage "${pkgdir}/boot/uImage"
}

_package-ax3() {
  pkgdesc="The Linux Kernel - ${_desc} - OpenBlocks AX3-4"
  depends=('linux-armv7')
  provides=('linux-armv7-uimage')
  conflicts=('linux-armv7-uimage' 'linux-armv7-rc-uimage')
  replaces=('linux-mvebu-ax3')

  cd "${srcdir}/${_srcname}"

  mkdir -p "${pkgdir}/boot"
  cat arch/$KARCH/boot/zImage arch/$KARCH/boot/dts/armada-xp-openblocks-ax3-4.dtb > myimage
  mkimage -A arm -O linux -T kernel -C none -a 0x00008000 -e 0x00008000 -n "${pkgname}" -d myimage "${pkgdir}/boot/uImage"
}

_package-d3plug() {
  pkgdesc="The Linux Kernel - ${_desc} - Globalscale D3Plug"
  depends=('linux-armv7')
  provides=('linux-armv7-uimage')
  conflicts=('linux-armv7-uimage' 'linux-armv7-rc-uimage')
  replaces=('linux-d3plug')

  cd "${srcdir}/${_srcname}"

  mkdir -p "${pkgdir}/boot"
  cat arch/$KARCH/boot/zImage arch/$KARCH/boot/dts/dove-d3plug.dtb > myimage
  mkimage -A arm -O linux -T kernel -C none -a 0x00008000 -e 0x00008000 -n "${pkgname}" -d myimage "${pkgdir}/boot/uImage"
}

_package-cubox() {
  pkgdesc="The Linux Kernel - ${_desc} - SolidRun Cubox (Marvell)"
  depends=('linux-armv7')
  provides=('linux-armv7-uimage')
  conflicts=('linux-armv7-uimage' 'linux-armv7-rc-uimage')
  #replaces=('linux-cubox')

  cd "${srcdir}/${_srcname}"

  mkdir -p "${pkgdir}/boot"
  cat arch/$KARCH/boot/zImage arch/$KARCH/boot/dts/dove-cubox.dtb > myimage
  mkimage -A arm -O linux -T kernel -C none -a 0x00008000 -e 0x00008000 -n "${pkgname}" -d myimage "${pkgdir}/boot/uImage"
}

_package-chromebook() {
  pkgdesc="The Linux Kernel - ${_desc} - Chromebooks"
  depends=('linux-armv7')
  conflicts=('linux-armv7-rc-chromebook')
  install=${pkgname}.install

  cd "${srcdir}/${_srcname}"

  cp ../kernel.its .
  mkimage -D "-I dts -O dtb -p 2048" -f kernel.its vmlinux.uimg
  dd if=/dev/zero of=bootloader.bin bs=512 count=1
  echo 'console=tty0 init=/sbin/init root=PARTUUID=%U/PARTNROFF=1 rootwait rw noinitrd' > cmdline
  vbutil_kernel \
    --pack vmlinux.kpart \
    --version 1 \
    --vmlinuz vmlinux.uimg \
    --arch arm \
    --keyblock ../kernel.keyblock \
    --signprivate ../kernel_data_key.vbprivk \
    --config cmdline \
    --bootloader bootloader.bin

  mkdir -p "${pkgdir}/boot"
  cp vmlinux.kpart "${pkgdir}/boot"
}

_package-odroidc1() {
  pkgdesc="The Linux Kernel - ${_desc} - ODROID-C1"
  depends=('linux-armv7')
  provides=('linux-armv7-uimage')
  conflicts=('linux-armv7-uimage' 'linux-armv7-rc-uimage')

  cd "${srcdir}/${_srcname}"

  mkdir -p "${pkgdir}/boot"
  mkimage -A arm -O linux -T kernel -C none -a 0x00208000 -e 0x00208000 -n "${pkgname}" -d arch/$KARCH/boot/zImage "${pkgdir}/boot/uImage"
}

pkgname=("${pkgbase}" "${pkgbase}-headers" "${pkgbase}-smileplug" "${pkgbase}-mirabox" "${pkgbase}-ax3" "${pkgbase}-d3plug" "${pkgbase}-cubox" "${pkgbase}-chromebook" "${pkgbase}-odroidc1")
for _p in ${pkgname[@]}; do
  eval "package_${_p}() {
    _package${_p#${pkgbase}}
  }"
done