# Maintainer: Stephen Oliver <mrsteveman1@gmail.com>

# am33x kernel and headers
#  - note: any other kernel packages should include headers for that march
#  - there will be no v7 kernel26 package, each march will be tagged individually

noautobuild=1
plugrel=1

pkgbase=linux-am33x
pkgname=('linux-am33x' 'linux-headers-am33x')
_kernelname=${pkgname#linux}
_basekernel="am33x"
pkgver=3.2.11
pkgrel=alarm8
arch=('armv7h')
url="http://www.kernel.org/"
license=('GPL2')
makedepends=('xmlto' 'docbook-xsl' 'uboot-mkimage' 'git')
options=('!strip')
source=("config"
	"https://github.com/koenkooi/linux/zipball/linux-ti33x-psp-3.2-r6a+gitr09e9651bcf2ee8d86685f2a8075bc6557b1d3b91"
	"ARM-omap-am33x-BeagleBone-userspace-SPI-support.patch"
	"0002-beaglebone-hack-in-support-for-the-WIP-st7735fb-driv.patch"
	"0003-st7735fb-Make-FB-native-endian-on-little-endian-plat.patch")

build() {

	cd $srcdir

	mv koenkooi-linux-* linux

  	ln -s "${srcdir}/config" "${srcdir}/linux/.config"

	cd $srcdir/linux  
	
	patch -Np0 -i "${srcdir}/ARM-omap-am33x-BeagleBone-userspace-SPI-support.patch"
	
	# these are crude patches that hack in support for an SPI framebuffer, probably conflicts with spidev and cape configuration so they're disabled.
	#patch -Np0 -i "${srcdir}/0002-beaglebone-hack-in-support-for-the-WIP-st7735fb-driv.patch"
	#patch -Np0 -i "${srcdir}/0003-st7735fb-Make-FB-native-endian-on-little-endian-plat.patch"
	make prepare

	make ${MAKEFLAGS} uImage modules
}

package_linux-am33x() {
  pkgdesc="The Linux Kernel and modules - am33x processors"
  groups=('base')
  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' 'kernel26-am33x' 'linux=${pkgver}')
  conflicts=('kernel26-am33x' 'linux-tegra')
  replaces=('kernel26-am33x')
  backup=("etc/mkinitcpio.d/${pkgname}.preset")
  install=${pkgname}.install

  cd "${srcdir}/linux"

  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' -exec 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"
}

package_linux-headers-am33x() {
  pkgdesc="Header files and scripts for building modules for linux kernel - am33x processors"
  provides=('kernel26-headers-am33x' 'linux-headers=${pkgver}')
  conflicts=('kernel26-headers-am33x' 'linux-headers-tegra')
  replaces=('kernel26-headers-am33x')

  mkdir -p "${pkgdir}/lib/modules/${_kernver}"

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

  cd "${srcdir}/linux"
  install -D -m644 Makefile \
    "${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/$KARCH/mach-omap2
  cp -a arch/$KARCH/mach-omap2/include ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/mach-omap2/
  mkdir -p ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/plat-omap
  cp -a arch/$KARCH/plat-omap/include ${pkgdir}/usr/src/linux-${_kernver}/arch/$KARCH/plat-omap/

  # 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 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}
}