# Maintainer: Mike Staszel <mikestaszel@plugapps.com>
# Maintainer: Kevin Mihelich <kevin@archlinuxarm.org>
# Maintainer: Jason Plum <jplum@archlinuxarm.org>

buildarch=2

pkgbase=linux
pkgname=('linux' 'linux-headers')
# pkgname=linux-custom       # Build kernel with a different name
_kernelname=${pkgname#linux}
_basekernel=3.1
pkgver=${_basekernel}.10
pkgrel=32
cryptodev_commit=57b5544de80db85c8955499831fdaa30829db77a
bfqver=v7r1
uksmver=0.1.2.2

arch=('arm')
url="http://www.kernel.org/"
license=('GPL2')
makedepends=('xmlto' 'docbook-xsl' 'uboot-mkimage' 'inetutils' 'kmod')
options=('!strip')
source=("ftp://ftp.kernel.org/pub/linux/kernel/v3.x/linux-${_basekernel}.tar.bz2"
        "ftp://ftp.kernel.org/pub/linux/kernel/v3.x/patch-${pkgver}.bz2"
        'archlinuxarm.patch'
        'memset.patch'
        'pciefix.patch'
        'support.patch'
        'aufs3-3.1.patch.xz'
        'config'
        'mach-types::http://www.arm.linux.org.uk/developer/machines/download.php'
        'change-default-console-loglevel.patch'
        'usb-add-reset-resume-quirk-for-several-webcams.patch'
	"http://kerneldedup.org/download/uksm/${uksmver}/uksm-${uksmver}-for-v3.1.ge.10.patch"
        "http://algo.ing.unimo.it/people/paolo/disk_sched/patches/${_basekernel}.0-${bfqver}/0001-block-prepare-I-O-context-code-for-BFQ-${bfqver}-for-${_basekernel}.patch"
        "http://algo.ing.unimo.it/people/paolo/disk_sched/patches/${_basekernel}.0-${bfqver}/0002-block-cgroups-kconfig-build-bits-for-BFQ-${bfqver}-${_basekernel}.patch"
        "http://algo.ing.unimo.it/people/paolo/disk_sched/patches/${_basekernel}.0-${bfqver}/0003-block-introduce-the-BFQ-${bfqver}-I-O-sched-for-${_basekernel}.patch"
        "http://algo.ing.unimo.it/people/paolo/disk_sched/patches/${_basekernel}.0-${bfqver}/0004-block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-${bfqver}-for-${_basekernel}.0.patch"
        "https://github.com/cryptodev-linux/cryptodev-linux/archive/${cryptodev_commit}.tar.gz")

md5sums=('8d43453f8159b2332ad410b19d86a931'
         'a8e1c25a93a685ec2a1c3a808715fe9d'
         '3146a693d9225343de2a8dbeb0c8e841'
         '39be2896f0b968d61a19b33da75ce6e0'
         '61dbbcdb0f35032ea7f82c5b1ef7c769'
         'f5d3635da03cb45904bedd69b47133de'
         'e77f1c6fa171b2cb3d08109c036af069'
         '3486198be707229b40c493a05970f7ba'
         'SKIP'
         '9d3c56a4b999c8bfbd4018089a62f662'
         'd00814b57448895e65fbbc800e8a58ba'
         '19685c92623a8176fe3ed41d1ef8c5d9'
         '463ba3224934240c7053ede55f1be698'
         'efd859a17c1f36e89ece1de6b5b8f4f7'
         '8050818f8951873c10ad5cacde656a48'
         'fe4edc45c3d8fcdaa849f63aa6408d56'
         'a59f78f0a34cfe321921265246a7b725')

prepare() {
msg "Patches:"
  cd "${srcdir}/linux-${_basekernel}"

msg2 "Add upstream patch"
  patch -p1 -i "${srcdir}/patch-${pkgver}"

msg2 "Fix memset for GCC 4.8"
  patch -p1 -i "${srcdir}/memset.patch"

msg2 "Add the pci-e patch backported from 3.6.10 for kirkwoods"
  patch -Np1 -i "${srcdir}/pciefix.patch"

msg2 "Add the USB_QUIRK_RESET_RESUME for several webcams"
  # FS#26528
  patch -Np1 -i "${srcdir}/usb-add-reset-resume-quirk-for-several-webcams.patch"

msg2 "Add Arch Linux ARM patch for ARMv5te plug computers,"
msg2 " requested additional support, mach-types"
  patch -Np1 -i "${srcdir}/archlinuxarm.patch"
  patch -Np1 -i "${srcdir}/support.patch"
  cp "${srcdir}/mach-types" arch/arm/tools

msg2 "Add UKSM patch"
  patch -Np1 -i "${srcdir}/uksm-${uksmver}-for-v3.1.ge.10.patch"

msg2 "Add BFQ I/O scheduler patches"
  patch -Np1 -i "${srcdir}/0001-block-prepare-I-O-context-code-for-BFQ-${bfqver}-for-${_basekernel}.patch"
  patch -Np1 -i "${srcdir}/0002-block-cgroups-kconfig-build-bits-for-BFQ-${bfqver}-${_basekernel}.patch"
  patch -Np1 -i "${srcdir}/0003-block-introduce-the-BFQ-${bfqver}-I-O-sched-for-${_basekernel}.patch"
  patch -Np1 -i "${srcdir}/0004-block-bfq-add-Early-Queue-Merge-EQM-to-BFQ-${bfqver}-for-${_basekernel}.0.patch"

msg2 "Add AUFS3 patches"
  patch -Np1 -i "${srcdir}/aufs3-3.1.patch"

  # add latest fixes from stable queue, if needed
  # http://git.kernel.org/?p=linux/kernel/git/stable/stable-queue.git

msg2 "Set DEFAULT_CONSOLE_LOGLEVEL to 4 (same value as the 'quiet' kernel param)"
  # remove this when a Kconfig knob is made available by upstream
  # (relevant patch sent upstream: https://lkml.org/lkml/2011/7/26/227)
  patch -Np1 -i "${srcdir}/change-default-console-loglevel.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 "${srcdir}/linux-${_basekernel}"

  #Fixes ld errors during build
  unset LDFLAGS

  # 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 ../${_basekernel}.config

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

  #yes "" | make config

msg "Building!"
  make ${MAKEFLAGS} uImage modules

msg "Building cryptodev module"
  cd "${srcdir}/cryptodev-linux-${cryptodev_commit}"
  make KERNEL_DIR="${srcdir}/linux-${_basekernel}"
}

package_linux() {
  pkgdesc="The Linux Kernel and modules"
  depends=('coreutils' 'linux-firmware' 'module-init-tools>=3.16' 'mkinitcpio>=0.7')
  optdepends=('crda: to set the correct wireless channels of your country')
  provides=('kernel26' 'aufs_friendly' 'cryptodev_friendly')
  conflicts=('kernel26')
  replaces=('kernel26')
  install=${pkgname}.install

  cd "${srcdir}/linux-${_basekernel}"

  KARCH=arm

  # get kernel version
  _kernver="$(make kernelrelease)"

  mkdir -p "${pkgdir}"/{lib/modules,lib/firmware,boot}
  make INSTALL_MOD_PATH="${pkgdir}" modules_install
  cp arch/$KARCH/boot/uImage "${pkgdir}/boot/uImage"

  # set correct depmod command for install
  sed \
    -e  "s/KERNEL_NAME=.*/KERNEL_NAME=${_kernelname}/g" \
    -e  "s/KERNEL_VERSION=.*/KERNEL_VERSION=${_kernver}/g" \
    -i "${startdir}/${pkgname}.install"

  # remove build and source links
  rm -f "${pkgdir}"/lib/modules/${_kernver}/{source,build}
  # remove the firmware
  rm -rf "${pkgdir}/lib/firmware"
  # gzip -9 all modules to save 100MB of space
  find "${pkgdir}" -name '*.ko' |xargs -P 2 -n 1 gzip -9
  # make room for external modules
  ln -s "../extramodules-${_basekernel}-${_kernelname:-ARCH}" "${pkgdir}/lib/modules/${_kernver}/extramodules"
  # add real version for building modules and running depmod from post_install/upgrade
  mkdir -p "${pkgdir}/lib/modules/extramodules-${_basekernel}-${_kernelname:-ARCH}"
  echo "${_kernver}" > "${pkgdir}/lib/modules/extramodules-${_basekernel}-${_kernelname:-ARCH}/version"

  # install cryptodev module
  cd "${srcdir}/cryptodev-linux-${cryptodev_commit}"
  make -C "${srcdir}/linux-${_basekernel}" INSTALL_MOD_PATH="${pkgdir}" SUBDIRS=`pwd` modules_install

  cd "${srcdir}/linux-${_basekernel}"

  # Now we call depmod...
  depmod -b "$pkgdir" -F System.map "$_kernver"

  # move module tree /lib -> /usr/lib
  mkdir -p "${pkgdir}/usr"
  mv "$pkgdir/lib" "$pkgdir/usr"
}

package_linux-headers() {
  pkgdesc="Header files and scripts for building modules for linux kernel"
  provides=('kernel26-headers')
  conflicts=('kernel26-headers')
  replaces=('kernel26-headers')

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

  cd "${pkgdir}/usr/lib/modules/${_kernver}"
  ln -sf ../../../src/linux-${_kernver} build

  cd "${srcdir}/linux-${_basekernel}"
  install -D -m644 Makefile \
    "${pkgdir}/usr/src/linux-${_kernver}/Makefile"
  install -D -m644 kernel/Makefile \
    "${pkgdir}/usr/src/linux-${_kernver}/kernel/Makefile"
  install -D -m644 .config \
    "${pkgdir}/usr/src/linux-${_kernver}/.config"

  mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/include"

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

   # copy arch includes for external modules
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH
  cp -a arch/$KARCH/include ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/mach-kirkwood   
  cp -a arch/$KARCH/mach-kirkwood/include ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/mach-kirkwood/
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/plat-orion
  cp -a arch/$KARCH/plat-orion/include ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/plat-orion/


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

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

  mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/arch/${KARCH}/kernel"

  cp arch/${KARCH}/Makefile "${pkgdir}/usr/src/linux-${_kernver}/arch/${KARCH}/"

  if [ "${CARCH}" = "i686" ]; then
    cp arch/${KARCH}/Makefile_32.cpu "${pkgdir}/usr/src/linux-${_kernver}/arch/${KARCH}/"
  fi

  cp arch/${KARCH}/kernel/asm-offsets.s "${pkgdir}/usr/src/linux-${_kernver}/arch/${KARCH}/kernel/"

  # add headers for lirc package
  mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/drivers/media/video"

  cp drivers/media/video/*.h  "${pkgdir}/usr/src/linux-${_kernver}/drivers/media/video/"

  for i in bt8xx cpia2 cx25840 cx88 em28xx et61x251 pwc saa7134 sn9c102; do
    mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/drivers/media/video/${i}"
    cp -a drivers/media/video/${i}/*.h "${pkgdir}/usr/src/linux-${_kernver}/drivers/media/video/${i}"
  done

  # add docbook makefile
  install -D -m644 Documentation/DocBook/Makefile \
    "${pkgdir}/usr/src/linux-${_kernver}/Documentation/DocBook/Makefile"

  # add dm headers
  mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/drivers/md"
  cp drivers/md/*.h "${pkgdir}/usr/src/linux-${_kernver}/drivers/md"

  # add inotify.h
  mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/include/linux"
  cp include/linux/inotify.h "${pkgdir}/usr/src/linux-${_kernver}/include/linux/"

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

  # add dvb headers for external modules
  # in reference to:
  # http://bugs.archlinux.org/task/9912
  mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-core"
  cp drivers/media/dvb/dvb-core/*.h "${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/dvb-core/"
  # and...
  # http://bugs.archlinux.org/task/11194
  mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/include/config/dvb/"
  cp include/config/dvb/*.h "${pkgdir}/usr/src/linux-${_kernver}/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 "${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends/"
  cp drivers/media/dvb/frontends/lgdt330x.h "${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends/"
  cp drivers/media/video/msp3400-driver.h "${pkgdir}/usr/src/linux-${_kernver}/drivers/media/dvb/frontends/"

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

  # add xfs and shmem for aufs building
  mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/fs/xfs"
  mkdir -p "${pkgdir}/usr/src/linux-${_kernver}/mm"
  cp fs/xfs/xfs_sb.h "${pkgdir}/usr/src/linux-${_kernver}/fs/xfs/xfs_sb.h"

  # copy in Kconfig files
  for i in `find . -name "Kconfig*"`; do
    mkdir -p "${pkgdir}"/usr/src/linux-${_kernver}/`echo ${i} | sed 's|/Kconfig.*||'`
    cp ${i} "${pkgdir}/usr/src/linux-${_kernver}/${i}"
  done

  chown -R root.root "${pkgdir}/usr/src/linux-${_kernver}"
  find "${pkgdir}/usr/src/linux-${_kernver}" -type d -exec chmod 755 {} \;

  # strip scripts directory
  find "${pkgdir}/usr/src/linux-${_kernver}/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 "${pkgdir}"/usr/src/linux-${_kernver}/arch/{alpha,arm26,avr32,blackfin,cris,frv,h8300,ia64,m32r,m68k,m68knommu,mips,microblaze,mn10300,parisc,powerpc,ppc,s390,sh,sh64,sparc,sparc64,um,v850,x86,xtensa}

  # install cryptodev header
  cd "${srcdir}/cryptodev-linux-${cryptodev_commit}"
  install -D crypto/cryptodev.h "${pkgdir}/usr/src/linux-${_kernver}/crypto/cryptodev.h"
}