add(sys-kernel/coreos-firmware): Add firmware package.

This provides firmware from linux-firmware but excludes everything not
explicitly required by coreos-kernel. Note that firmware installed by
this will only be available on the root filesystem, the initrd still
uses the smaller set of firmware the linux repo provides.

The current 3.12 kernel wants a few files missing in the July snapshot:

 * Missing firmware: ct2fw-3.2.1.1.bin (bna.ko)
 * Missing firmware: ctfw-3.2.1.1.bin (bna.ko)
 * Missing firmware: cxgb4/t5fw.bin (cxgb4.ko)

These files have been added to the linux-firmware repo so a newer
snapshot will be required but for now I'm sticking with what is already
in Gentoo so I don't have to generate my own tarball or whatever.

sdk_container/src/third_party/coreos-overlay/coreos-base/coreos/coreos-0.0.1.ebuild

@@ -126,6 +126,8 @@ RDEPEND="${RDEPEND}
 	sys-apps/util-linux
 	sys-fs/e2fsprogs
 	sys-fs/aufs-util
+	sys-kernel/coreos-firmware
+	sys-kernel/coreos-kernel
 	sys-libs/timezone-data
 	sys-process/lsof
 	sys-process/procps

sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-firmware/coreos-firmware-20130728.ebuild

@@ -0,0 +1 @@
+coreos-firmware-99999999.ebuild

sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-firmware/coreos-firmware-99999999.ebuild

@@ -0,0 +1,124 @@
+# Copyright 1999-2013 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/sys-kernel/linux-firmware/linux-firmware-99999999.ebuild,v 1.30 2013/09/05 05:46:37 vapier Exp $
+
+EAPI=5
+
+if [[ ${PV} == 99999999* ]]; then
+	inherit git-2
+	SRC_URI=""
+	EGIT_REPO_URI="git://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git"
+	KEYWORDS=""
+else
+	SRC_URI="mirror://gentoo/linux-firmware-${PV}.tar.xz"
+	KEYWORDS="amd64"
+fi
+
+DESCRIPTION="Linux firmware files"
+HOMEPAGE="http://git.kernel.org/?p=linux/kernel/git/firmware/linux-firmware.git"
+
+LICENSE="GPL-1 GPL-2 GPL-3 BSD freedist"
+SLOT="0"
+IUSE=""
+
+DEPEND="sys-kernel/coreos-kernel:="
+RDEPEND="${DEPEND}
+	!=sys-kernel/coreos-kernel-3.12.6
+	!<=sys-kernel/coreos-kernel-3.11.7-r5
+	!sys-kernel/linux-firmware
+	!sys-firmware/alsa-firmware[alsa_cards_ca0132]
+	!sys-firmware/alsa-firmware[alsa_cards_korg1212]
+	!sys-firmware/alsa-firmware[alsa_cards_maestro3]
+	!sys-firmware/alsa-firmware[alsa_cards_sb16]
+	!sys-firmware/alsa-firmware[alsa_cards_ymfpci]
+	!media-tv/cx18-firmware
+	!<sys-firmware/ivtv-firmware-20080701-r1
+	!media-tv/linuxtv-dvb-firmware[dvb_cards_cx231xx]
+	!media-tv/linuxtv-dvb-firmware[dvb_cards_cx23885]
+	!media-tv/linuxtv-dvb-firmware[dvb_cards_usb-dib0700]
+	!net-dialup/ueagle-atm
+	!net-dialup/ueagle4-atm
+	!net-wireless/ar9271-firmware
+	!net-wireless/i2400m-fw
+	!net-wireless/libertas-firmware
+	!sys-firmware/rt61-firmware
+	!net-wireless/rt73-firmware
+	!net-wireless/rt2860-firmware
+	!net-wireless/rt2870-firmware
+	!sys-block/qla-fc-firmware
+	!sys-firmware/amd-ucode
+	!sys-firmware/iwl1000-ucode
+	!sys-firmware/iwl2000-ucode
+	!sys-firmware/iwl2030-ucode
+	!sys-firmware/iwl3945-ucode
+	!sys-firmware/iwl4965-ucode
+	!sys-firmware/iwl5000-ucode
+	!sys-firmware/iwl5150-ucode
+	!sys-firmware/iwl6000-ucode
+	!sys-firmware/iwl6005-ucode
+	!sys-firmware/iwl6030-ucode
+	!sys-firmware/iwl6050-ucode
+	!x11-drivers/radeon-ucode
+	"
+#add anything else that collides to this
+
+# source name is linux-firmware, not coreos-firmware
+S="${WORKDIR}/linux-firmware-${PV}"
+
+src_unpack() {
+	if [[ ${PV} == 99999999* ]]; then
+		git-2_src_unpack
+	else
+		default
+		# rename directory from git snapshot tarball
+		mv linux-firmware-*/ linux-firmware-${PV} || die
+	fi
+}
+
+src_prepare() {
+	# FIXME(marineam): The linux-info eclass would normally be able to
+	# provide version info but since we don't install kernel source code the
+	# way it expects it doesn't work correctly. Will fix this eventually...
+	local kernel_pkg=$(best_version sys-kernel/coreos-kernel)
+	local kernel_ver="${kernel_pkg#sys-kernel/coreos-kernel-}"
+	kernel_ver="${kernel_ver%_*}"
+	kernel_ver="${kernel_ver%-*}"
+	local kernel_mods="${ROOT}/lib/modules/${kernel_ver}"
+	# the actually version may have a + or other extraversion suffix
+	local kernel_mods=$(ls -d1 "${kernel_mods}"* | tail -n1)
+
+	# If any firmware is missing warn but don't raise a fuss. Missing
+	# files either means linux-firmware probably out-of-date but since
+	# this is new and hacky I'm not going to worry too much just yet.
+
+	einfo "Scanning for files required by ${kernel_pkg}"
+	echo -n > "${T}/firmware-scan"
+	local kofile fwfile
+	for kofile in $(find "${kernel_mods}" -name '*.ko'); do
+		for fwfile in $(modinfo --field firmware "${kofile}"); do
+			if [[ ! -e "${fwfile}" ]]; then
+				ewarn "Missing firmware: ${fwfile} (${kofile##*/})"
+			elif [[ -L "${fwfile}" ]]; then
+				echo "${fwfile}" >> "${T}/firmware-scan"
+				realpath --relative-to=. "${fwfile}" >> "${T}/firmware-scan"
+			else
+				echo "${fwfile}" >> "${T}/firmware-scan"
+			fi
+		done
+	done
+
+	einfo "Pruning all unneeded firmware files..."
+	sort -u "${T}/firmware-scan" > "${T}/firmware"
+	find * -not -type d \
+		| sort "${T}/firmware" "${T}/firmware" - \
+		| uniq -u | xargs -r rm
+	assert
+
+	# Prune empty directories
+	find -type d -empty -delete || die
+}
+
+src_install() {
+	insinto /lib/firmware/
+	doins -r *
+}