1 files changed, 214 insertions, 0 deletions
diff --git a/sys-firmware/intel-microcode/intel-microcode-20180804.ebuild b/sys-firmware/intel-microcode/intel-microcode-20180804.ebuild
new file mode 100644
index 000000000000..4ab38dc28233
--- /dev/null
+++ b/sys-firmware/intel-microcode/intel-microcode-20180804.ebuild
@@ -0,0 +1,214 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI="6"
+
+inherit linux-info toolchain-funcs mount-boot
+
+# Find updates by searching and clicking the first link (hopefully it's the one):
+# https://www.intel.com/content/www/us/en/search.html?keyword=Processor+Microcode+Data+File
+
+COLLECTION_SNAPSHOT="20180804"
+INTEL_SNAPSHOT="20180703"
+NUM="27945"
+DESCRIPTION="Intel IA32/IA64 microcode update data"
+HOMEPAGE="http://inertiawar.com/microcode/ https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=${NUM}"
+SRC_URI="https://downloadmirror.intel.com/${NUM}/eng/microcode-${INTEL_SNAPSHOT}.tgz
+	https://dev.gentoo.org/~whissi/dist/intel-microcode/intel-microcode-collection-${COLLECTION_SNAPSHOT}.tar.xz"
+
+LICENSE="intel-ucode"
+SLOT="0"
+KEYWORDS="-* ~amd64 ~x86"
+IUSE="hostonly initramfs +split-ucode vanilla"
+REQUIRED_USE="|| ( initramfs split-ucode )"
+
+DEPEND="sys-apps/iucode_tool"
+
+# !<sys-apps/microcode-ctl-1.17-r2 due to bug #268586
+RDEPEND="!<sys-apps/microcode-ctl-1.17-r2
+	hostonly? ( sys-apps/iucode_tool )"
+
+RESTRICT="binchecks strip"
+
+S=${WORKDIR}
+
+# Blacklist bad microcode here.
+# 0x000406f1 aka 06-4f-01 aka CPUID 406F1 require newer microcode loader
+MICROCODE_BLACKLIST_DEFAULT="-s !0x000406f1"
+MICROCODE_BLACKLIST="${MICROCODE_BLACKLIST:=${MICROCODE_BLACKLIST_DEFAULT}}"
+
+# In case we want to set some defaults ...
+MICROCODE_SIGNATURES_DEFAULT=""
+
+# Advanced users only:
+# merge with:
+# only current CPU: MICROCODE_SIGNATURES="-S"
+# only specific CPU: MICROCODE_SIGNATURES="-s 0x00000f4a -s 0x00010676"
+# exclude specific CPU: MICROCODE_SIGNATURES="-s !0x00000686"
+MICROCODE_SIGNATURES="${MICROCODE_SIGNATURES:=${MICROCODE_SIGNATURES_DEFAULT}}"
+
+pkg_pretend() {
+	if [[ "${MICROCODE_BLACKLIST}" != "${MICROCODE_BLACKLIST_DEFAULT}" ]]; then
+		ewarn "MICROCODE_BLACKLIST is set to \"${MICROCODE_BLACKLIST}\" instead of default \"${MICROCODE_BLACKLIST_DEFAULT}\". You are on your own!"
+	fi
+
+	if [[ "${MICROCODE_SIGNATURES}" != "${MICROCODE_SIGNATURES_DEFAULT}" ]]; then
+		ewarn "The user has opted in for advanced use:"
+		ewarn "MICROCODE_SIGNATURES is set to \"${MICROCODE_SIGNATURES}\" instead of default \"${MICROCODE_SIGNATURES_DEFAULT}\"!"
+	fi
+
+	use initramfs && mount-boot_pkg_pretend
+}
+
+src_prepare() {
+	default
+
+	# Prevent "invalid file format" errors from iucode_tool
+	rm -f "${S}"/intel-ucod*/list || die
+}
+
+src_install() {
+	# This will take ALL of the upstream microcode sources:
+	# - microcode.dat
+	# - intel-ucode/
+	# In some cases, they have not contained the same content (eg the directory has newer stuff).
+	MICROCODE_SRC=(
+		"${S}"/intel-ucode/
+		"${S}"/intel-ucode-with-caveats/
+	)
+
+	# Allow users who are scared about microcode updates not included in Intel's official
+	# microcode tarball to opt-out and comply with Intel marketing
+	if ! use vanilla; then
+		MICROCODE_SRC+=( "${S}"/intel-microcode-collection-${COLLECTION_SNAPSHOT} )
+	fi
+
+	opts=(
+		${MICROCODE_BLACKLIST}
+		${MICROCODE_SIGNATURES}
+		# be strict about what we are doing
+		--overwrite
+		--strict-checks
+		--no-ignore-broken
+		# we want to install latest version
+		--no-downgrade
+		# show everything we find
+		--list-all
+		# show what we selected
+		--list
+	)
+
+	# The earlyfw cpio needs to be in /boot because it must be loaded before
+	# rootfs is mounted.
+	use initramfs && dodir /boot && opts+=( --write-earlyfw="${ED%/}"/boot/intel-uc.img )
+	# split location (we use a temporary location so that we are able
+	# to re-run iucode_tool in pkg_preinst; use keepdir instead of dodir to carry
+	# this folder to pkg_preinst to avoid an error even if no microcode was selected):
+	keepdir /tmp/intel-ucode && opts+=( --write-firmware="${ED%/}"/tmp/intel-ucode )
+
+	iucode_tool \
+		"${opts[@]}" \
+		"${MICROCODE_SRC[@]}" \
+		|| die "iucode_tool ${opts[@]} ${MICROCODE_SRC[@]}"
+
+	dodoc releasenote
+}
+
+pkg_preinst() {
+	use initramfs && mount-boot_pkg_preinst
+
+	if use hostonly; then
+		einfo "Removing ucode(s) not supported by any currently available (=online) processor(s) due to USE=hostonly ..."
+		opts=(
+			--scan-system
+			# be strict about what we are doing
+			--overwrite
+			--strict-checks
+			--no-ignore-broken
+			# we want to install latest version
+			--no-downgrade
+			# show everything we find
+			--list-all
+			# show what we selected
+			--list
+		)
+
+		# The earlyfw cpio needs to be in /boot because it must be loaded before
+		# rootfs is mounted.
+		use initramfs && opts+=( --write-earlyfw="${ED%/}"/boot/intel-uc.img )
+		# split location:
+		use split-ucode && dodir /lib/firmware/intel-ucode && opts+=( --write-firmware="${ED%/}"/lib/firmware/intel-ucode )
+
+		iucode_tool \
+			"${opts[@]}" \
+			"${ED%/}"/tmp/intel-ucode \
+			|| die "iucode_tool ${opts[@]} ${ED%/}/tmp/intel-ucode"
+
+	else
+		if use split-ucode; then
+			# Temporary /tmp/intel-ucode will become final /lib/firmware/intel-ucode ...
+			dodir /lib/firmware
+			mv "${ED%/}/tmp/intel-ucode" "${ED%/}/lib/firmware" || die "Failed to install splitted ucodes!"
+		fi
+	fi
+
+	# Cleanup any temporary leftovers so that we don't merge any
+	# unneeded files on disk
+	rm -r "${ED%/}/tmp" || die "Failed to cleanup '${ED%/}/tmp'"
+}
+
+pkg_prerm() {
+	use initramfs && mount-boot_pkg_prerm
+}
+
+pkg_postrm() {
+	use initramfs && mount-boot_pkg_postrm
+}
+
+pkg_postinst() {
+	use initramfs && mount-boot_pkg_postinst
+
+	local _has_installed_something=
+	if use initramfs && [[ -s "${EROOT%/}/boot/intel-uc.img" ]]; then
+		_has_installed_something="yes"
+	elif use split-ucode; then
+		_has_installed_something=$(find "${EROOT%/}/lib/firmware/intel-ucode" -maxdepth 0 -not -empty -exec echo yes \;)
+	fi
+
+	if use hostonly && [[ -n "${_has_installed_something}" ]]; then
+		elog "You only installed ucode(s) for all currently available (=online)"
+		elog "processor(s). Remember to re-emerge this package whenever you"
+		elog "change the system's processor model."
+		elog ""
+	elif [[ -z "${_has_installed_something}" ]]; then
+		ewarn "WARNING:"
+		ewarn "No ucode was installed! You can ignore this warning if there"
+		ewarn "aren't any microcode updates available for your processor(s)."
+		ewarn "But if you use MICROCODE_SIGNATURES variable please double check"
+		ewarn "if you have an invalid select."
+		ewarn ""
+
+		if use hostonly; then
+			ewarn "Unset \"hostonly\" USE flag to install all available ucodes."
+			ewarn ""
+		fi
+	fi
+
+	# We cannot give detailed information if user is affected or not:
+	# If MICROCODE_BLACKLIST wasn't modified, user can still use MICROCODE_SIGNATURES
+	# to to force a specific, otherwise blacklisted, microcode. So we
+	# only show a generic warning based on running kernel version:
+	if kernel_is -lt 4 14 34; then
+		ewarn "${P} contains microcode updates which require"
+		ewarn "additional kernel patches which aren't yet included in kernel <4.14.34."
+		ewarn "Loading such a microcode through kernel interface from an unpatched kernel"
+		ewarn "can crash your system!"
+		ewarn ""
+		ewarn "Those microcodes are blacklisted per default. However, if you have altered"
+		ewarn "MICROCODE_BLACKLIST or MICROCODE_SIGNATURES, you maybe have unintentionally"
+		ewarn "re-enabled those microcodes...!"
+		ewarn ""
+		ewarn "Check \"${EROOT%/}/usr/share/doc/${PN}-*/releasenot*\" if your microcode update"
+		ewarn "requires additional kernel patches or not."
+	fi
+}