# Maintainer: graysky <graysky AT archlinux DOT us>
# Contributor: Tobias Powalowski <tpowa@archlinux.org>
# Contributor: Thomas Baechler <thomas@archlinux.org>
###########################################################################################################
#                                          Patch and Build Options
###########################################################################################################
#
## Note all kernels get the ck patch set with BFS so there is no option to enable/disable it!
#
_usearchlogo="y"  # use the blue Arch logo rather than default tux logo when booting
_makenconfig="n"	# select additional kernel options prior to a build via nconfig
_localmodcfg="n"	# compile ONLY probed modules - see notes below!
_localyescfg="n"	# convert all modules to core - see notes below!
_use_current="n"	# use the current kernel's .config file - see notes below!
_BFQ_enable_="n"	# enable BFQ as the default I/O scheduler
###########################################################################################################
#                                        More Details and References
###########################################################################################################
## LOCALMODCONFIG OPTION
# As of mainline 2.6.32, running with this option will only build the modules that you currently have
# probed in your system VASTLY reducing the number of modules build.
#
# WARNING - make CERTAIN that all modules are modprobed BEFORE you begin making the pkg!
# Read, https://bbs.archlinux.org/viewtopic.php?pid=830221#p830221
# To keep track of which modules are needed for your specific system/hardware, give my module_db script
# a try: http://aur.archlinux.org/packages.php?ID=41689
#
# Note that if you use my script, this PKGBUILD will auto run the reload_data base for you to probe
# all the modules you have logged!
#
## LOCALYESCONFIG OPTION
# This adds the option localyesconfig to make. This is similar to localmodconfig, but after it removes
# unnecessary modules it runs "sed -i s/=m/=y/" on the .config file. It then runs "make silentoldconfig"
# to fix any holes that were created by the conversion of modules to core.
## USE CURRENT KERNEL'S .CONFIG
# Enabling this option will use the .config of the RUNNING kernel rather than the ARCH defaults.
# Useful when the package gets updated and you already went through the trouble of customizing your
# config options.  NOT recommended when a new kernel is released, but again, convenient for package bumps.
## BFQ
# Read, http://algo.ing.unimo.it/people/paolo/disk_sched/
#
###########################################################################################################
pkgname=(linux-ck-corei7-avx linux-ck-corei7-avx-headers)
_kernelname=-ck
_basekernel=3.0
pkgver=${_basekernel}.3
pkgrel=4
arch=('i686' 'x86_64')
url="https://wiki.archlinux.org/index.php/linux-ck"
license=('GPL2')
#makedepends=('xmlto' 'docbook-xsl')
options=('!strip')
_ckpatchversion=1
_ckpatchname="patch-${_basekernel}.0-ck${_ckpatchversion}"
_bfqpath="http://algo.ing.unimo.it/people/paolo/disk_sched/patches/3.0.0"
source=("ftp://ftp.kernel.org/pub/linux/kernel/v3.0/linux-${_basekernel}.tar"
"ftp://ftp.kernel.org/pub/linux/kernel/v3.0/patch-${pkgver}.gz"
# the main kernel config files
'config' 'config.x86_64'
'linux-ck.install' 'linux-ck.preset' # standard config files for mkinitcpio ramdisk
'fix-i915.patch'
'change-default-console-loglevel.patch'
http://www.kernel.org/pub/linux/kernel/people/ck/patches/${_basekernel}/${_basekernel}.0-ck${_ckpatchversion}/${_ckpatchname}.bz2 # ck_patchset
#${_bfqpath}/{0001 0002 0003} # bfq patchset
logo_linux_mono.pbm # optional Arch logo for boot
logo_linux_{clut224,vga16}.ppm) # optional Arch logo for boot

build() {
	cd "${srcdir}/linux-${_basekernel}"

	patch -p1 -i "${srcdir}/patch-${pkgver}"

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

	# fix #19234 i1915 display size
	patch -Np1 -i "${srcdir}/fix-i915.patch"

	# 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"

	### Patch source with ck patchset with BFS
	# Fix double name in EXTRAVERSION
	sed -i -re "s/^(.EXTRAVERSION).*$/\1 = /" ${srcdir}/${_ckpatchname}
	msg "Patching source with the ck1 patch set using bfs v0.406"
	patch -Np1 -i ${srcdir}/${_ckpatchname}

	### Optionally enable BFQ IO Scheduler as default
	#	msg "Patching source with BFQ patches"
	#	for p in $(ls ${srcdir}/000*.patch); do
	#		patch -Np1 -i $p
	#	done

	### Clean tree and copy ARCH config over
	msg "Running make mrproper to clean source tree"
	make mrproper

	if [ "$CARCH" = "x86_64" ]; then
		cat ../config.x86_64 >./.config
	else
		cat ../config >./.config
	fi

	### Optionally use the blue Arch logo at kernel load
	if [ $_usearchlogo = "y" ]; then
		install -m644 ${srcdir}/logo_linux_clut224.ppm drivers/video/logo/
		install -m644 ${srcdir}/logo_linux_mono.pbm drivers/video/logo/
		install -m644 ${srcdir}/logo_linux_vga16.ppm drivers/video/logo/
		sed -i -e 's/# CONFIG_LOGO is not set/CONFIG_LOGO=y\nCONFIG_LOGO_LINUX_MONO=y\nCONFIG_LOGO_LINUX_VGA16=y\nCONFIG_LOGO_LINUX_CLUT224=y/' ./.config
	fi

	### Optionally use running kernel's config
	# code originally by nous; http://aur.archlinux.org/packages.php?ID=40191
	if [ $_use_current = "y" ]; then
		if [[ -s /proc/config.gz ]]; then
			msg "Extracting config from /proc/config.gz..."
			modprobe configs
			zcat /proc/config.gz > ./.config
		else
			warning "You kernel was not compiled with IKCONFIG_PROC!"
			warning "You cannot read the current config!"
			warning "Aborting!"
			exit
		fi
	fi

	if [ "${_kernelname}" != "" ]; then
		sed -i "s|CONFIG_LOCALVERSION=.*|CONFIG_LOCALVERSION=\"${_kernelname}\"|g" ./.config
	fi

	### Optionally enable BFQ as the default io scheduler
	if [ $_BFQ_enable_ = "y" ]; then
		sed -i -e s'/CONFIG_CFQ_GROUP_IOSCHED=y/CONFIG_CFQ_GROUP_IOSCHED=y\nCONFIG_IOSCHED_BFQ=y\nCONFIG_CGROUP_BFQIO=y/' \
			-i -e s'/CONFIG_DEFAULT_CFQ=y/# CONFIG_DEFAULT_CFQ is not set\nCONFIG_DEFAULT_BFQ=y/' \
			-i -e '/CONFIG_DEFAULT_IOSCHED/ s,cfq,bfq,' ./.config
	fi

	# remove the sublevel from Makefile
	# this ensures our kernel version is always 3.X-ARCH
	# this way, minor kernel updates will not break external modules
	# we need to change this soon, see FS#16702
	sed -ri 's|^(SUBLEVEL =).*|\1|' Makefile

	# get kernel version
	msg "Running make prepare for you to enable patched options of your choosing"
	make prepare

	### Optionally load needed modules for the make localmodconfig
	# See http://aur.archlinux.org/packages.php?ID=41689
	if [ $_localmodcfg = "y" ]; then
		msg "If you have modprobe_db installed, running reload_database now"
		if [ -e /usr/bin/reload_database ]; then
			/usr/bin/reload_database
		fi
		msg "Running Steven Rostedt's make localmodconfig now"
		make localmodconfig
	fi

	if [ $_localyescfg = "y" ]; then
		msg "Running make localyesconfig"
		make localyesconfig
	fi

	if [ $_makenconfig = "y" ]; then
		msg "Running make nconfig"
		make nconfig
	fi

	msg "Running make bzImage and modules"
	make ${MAKEFLAGS} KCFLAGS="-march=corei7-avx -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2" KCPPFLAGS="-march=corei7-avx -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -D_FORTIFY_SOURCE=2" bzImage modules
}

package_linux-ck-corei7-avx() {
_Kpkgdesc='The Linux Kernel and modules with Brain Fuck Scheduler v0.406 and all the goodies in the ck1 patch set.'
pkgdesc="${_Kpkgdesc} Intel Sandybridge Core i3/i5/i7 optimized."
depends=('coreutils' 'linux-firmware' 'module-init-tools>=3.16' 'mkinitcpio>=0.7')
optdepends=('crda: to set the correct wireless channels of your country' 'lirc-ck: Linux Infrared Remote Control kernel modules for linux-ck' 'nvidia-ck: nVidia drivers for linux-ck' 'nvidia-beta-ck: nVidia beta drivers for linux-ck' 'modprobed_db: Keeps track of EVERY kernel module that has ever been probed - useful for those of us who make localmodconfig')
provides=("${pkgname}=${pkgver}")
conflicts=('linux-ck-atom' 'linux-ck-core2' 'linux-ck' 'linux-ck-k8' 'linux-ck-k10' 'linux-ck-corei7-avx')
replaces=('kernel26-ck-corei7-avx')
backup=("etc/mkinitcpio.d/linux-ck.preset")
install=linux-ck.install
groups=('ck-corei7-avx')

cd "${srcdir}/linux-${_basekernel}"
KARCH=x86

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

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

# add vmlinux
install -D -m644 vmlinux "${pkgdir}/usr/src/linux-${_kernver}/vmlinux"

# install fallback mkinitcpio.conf file and preset file for kernel
install -D -m644 "${srcdir}/linux-ck.preset" "${pkgdir}/etc/mkinitcpio.d/linux-ck.preset"

# set correct depmod command for install
sed \
	-e  "s/KERNEL_NAME=.*/KERNEL_NAME=${_kernelname}/g" \
	-e  "s/KERNEL_VERSION=.*/KERNEL_VERSION=${_kernver}/g" \
	-i "${startdir}/linux-ck.install"
sed \
	-e "s|default_image=.*|default_image=\"/boot/initramfs-linux-ck.img\"|g" \
	-e "s|fallback_image=.*|fallback_image=\"/boot/initramfs-linux-ck-fallback.img\"|g" \
	-i "${pkgdir}/etc/mkinitcpio.d/linux-ck.preset"

# remove build and source links
rm -f "${pkgdir}"/lib/modules/${_kernver}/{source,build}
# add compat symlink for the kernel image
ln -sf vmlinuz-linux-ck "${pkgdir}/boot/vmlinuz26${_kernelname}"
# remove the firmware
rm -rf "${pkgdir}/lib/firmware"
# gzip -9 all modules to save 100MB of space
find "${pkgdir}" -name '*.ko' -exec gzip -9 {} \;
}

package_linux-ck-corei7-avx-headers() {
_Hpkgdesc='Header files and scripts to build modules for linux-ck.'
pkgdesc="${_Hpkgdesc} Intel Sandybridge Core i3/i5/i7 optimized."
provides=("${pkgname}=${pkgver}")
conflicts=('linux-ck-atom-headers' 'linux-ck-core2-headers'  'linux-ck-corei7-avx-headers' 'linux-ck-headers' 'linux-ck-k8-headers' 'linux-ck-k10-headers')
replaces=('kernel26-ck-corei7-avx-headers')
groups=('ck-corei7-avx')

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

cd "${pkgdir}/lib/modules/${_kernver}"
ln -sf ../../../usr/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/x86"
cp -a arch/x86/include "${pkgdir}/usr/src/linux-${_kernver}/arch/x86/"

# 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,arm,arm26,avr32,blackfin,cris,frv,h8300,ia64,m32r,m68k,m68knommu,mips,microblaze,mn10300,parisc,powerpc,ppc,s390,sh,sh64,sparc,sparc64,um,v850,xtensa}
}
# Global pkgdesc and depends are here so that they will be picked up by AUR
pkgdesc='The Linux Kernel and modules with Brain Fuck Scheduler v0.406 and all the goodies in the ck1 patch set.'
sha256sums=('64b0228b54ce39b0b2df086109a7b737cde58e3df4f779506ddcaccee90356a0'
            'ffc606851dba5c1fe9a6590492f16f39798297c6beb28b5baa1b476018f4b244'
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            'ff686ca6ce4ca152991e34fda7d1408eafeee70d3db392cca129fccb3d817069'
            '2a8bdb10801a1205c90d0f77b227a5e026317156fd0961c14b69aadb9dbb808f'
            'c2cf8cc2600502de348f3dc3aae9a3bde5486759db15cb8a93df7aa35bd6e7da'
            '9ccadbe3eb30bb283af3eb869c3a4bdb764628854811cc616a2e02e9ef398705'
            'b9d79ca33b0b51ff4f6976b7cd6dbb0b624ebf4fbf440222217f8ffc50445de4'
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            '1e5bea8de1c2cc24498fb9a4fdbb313f36f38f671f2bfc46ccf7acbd7958a4b9'
            '111feb3ac4a8a80b6aae616c5dff8cd62e2b9c8719b390dfa72b45101592fadc'
            '5147681ae1ef8ca99d458f3a074058267876647b7287b702f5bcf07e795d7e43')