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# 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):
# http://www.intel.com/content/www/us/en/search.html?keyword=Processor+Microcode+Data+File
COLLECTION_SNAPSHOT="20180426"
INTEL_SNAPSHOT="20180425"
NUM="27776"
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=""
IUSE="initramfs +split-ucode vanilla"
REQUIRED_USE="|| ( initramfs split-ucode )"
DEPEND="sys-apps/iucode_tool"
RDEPEND="!<sys-apps/microcode-ctl-1.17-r2" #268586
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:
use split-ucode && dodir /lib/firmware/intel-ucode && opts+=( --write-firmware="${ED%/}"/lib/firmware/intel-ucode )
iucode_tool \
"${opts[@]}" \
"${MICROCODE_SRC[@]}" \
|| die "iucode_tool ${opts[@]} ${MICROCODE_SRC[@]}"
dodoc releasenote
}
pkg_preinst() {
use initramfs && mount-boot_pkg_preinst
}
pkg_prerm() {
use initramfs && mount-boot_pkg_prerm
}
pkg_postrm() {
use initramfs && mount-boot_pkg_postrm
}
pkg_postinst() {
use initramfs && mount-boot_pkg_postinst
# We cannot give detailed information if user is affected or not:
# If MICROCODE_BLACKLIST wasn't modified, user can still use MICROCODE_SIGNATURES
# to to force a specific, otherwise blacklisted, microcode. So we
# only show a generic warning based on running kernel version:
if kernel_is -lt 4 14 34; then
ewarn "${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 ${EROOT%/}/usr/share/doc/${P}/releasenot* if your microcode update"
ewarn "requires additional kernel patches or not."
fi
}
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