--- /dev/null
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=5
+
+inherit linux-info
+
+DESCRIPTION="Microcode for V.Islands Radeon GPUs and APUs"
+HOMEPAGE="http://people.freedesktop.org/~agd5f/radeon_ucode/"
+SRC_URI="mirror://gentoo/${P}.tar.xz"
+
+LICENSE="radeon-ucode"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="legacy"
+
+RDEPEND="legacy? ( !sys-firmware/radeon-ucode )
+ !>sys-kernel/linux-firmware-20150812[-savedconfig]"
+
+S=${WORKDIR}/radeon_ucode
+
+AMDGPU_LEGACY_CIK="bonaire hawaii kabini kaveri mullins"
+
+src_install() {
+ local directory files legacyfiles
+ if use legacy; then
+ for directory in ${AMDGPU_LEGACY_CIK}; do
+ legacyfiles+=( ${directory}/*.bin )
+ done
+ insinto /lib/firmware/radeon
+ doins ${legacyfiles[@]}
+ fi
+ for directory in */; do
+ if [[ ${AMDGPU_LEGACY_CIK} != *${directory%/}* ]]; then
+ files+=( ${directory}/*.bin )
+ fi
+ done
+ insinto /lib/firmware/amdgpu
+ doins ${files[@]}
+ FILES=( ${files[@]/*\//amdgpu/} ${legacyfiles[@]/*\//radeon/} )
+}
+
+pkg_postinst() {
+ if linux_config_exists && linux_chkconfig_builtin DRM_AMDGPU; then
+ if ! linux_chkconfig_present FIRMWARE_IN_KERNEL || \
+ ! [[ "$(linux_chkconfig_string EXTRA_FIRMWARE)" == *_rlc.bin* ]]; then
+ ewarn "Your kernel has amdgpu DRM built-in but not the microcode."
+ ewarn "For kernel modesetting to work, please set in kernel config"
+ ewarn "CONFIG_FIRMWARE_IN_KERNEL=y"
+ ewarn "CONFIG_EXTRA_FIRMWARE_DIR=\"/lib/firmware\""
+ ewarn "CONFIG_EXTRA_FIRMWARE=\"${FILES[@]}\""
+ ewarn "You may skip microcode files for which no hardware is installed."
+ ewarn "More information at https://wiki.gentoo.org/wiki/AMDGPU#Firmware"
+ fi
+ fi
+}