blob: f83582b660b21197b83e8738c63eb993d3edfc45 [file] [log] [blame]
# Copyright 2019 The Chromium OS Authors. All rights reserved.
# Distributed under the terms of the GNU General Public License v2.
# This package installs a kernel module loadpin-trigger.ko and configures
# OS to load the module on boot. The kernel module calls
# kernel_read_file_from_path to load a dummy file into kernel, which will
# trigger loadpin. We used to rely on loading kernel modules to pin to
# rootfs, but the recent kernel param loadpin.exclude=kernel-module we added
# makes loadpin ignore module loading.
EAPI=6
inherit cos-linux-mod
DESCRIPTION="Kernel module to trigger loadpin on boot"
LICENSE="GPL-2"
SLOT="rt"
KEYWORDS="*"
DEPEND="virtual/linux-sources"
RDEPEND="
${DEPEND}
"
S="${WORKDIR}"
# Prevent kernel module signature being striped.
STRIP_MASK+=" *.ko"
MODULE_NAME="loadpin_trigger"
pkg_setup() {
MODULE_NAMES="${MODULE_NAME}(::)"
# We cannot rely on auto detection because we have two kernels installed.
KERNEL_DIR="$(find "${ROOT}/usr/src" -maxdepth 1 -name "lakitu-kernel-rt-[0-9]*")"
KBUILD_OUTPUT="${KERNEL_DIR}/build"
linux-mod_pkg_setup
BUILD_PARAMS="KERNEL_SOURCES=${KV_DIR} KBUILD_OUTPUT=${KBUILD_OUTPUT}"
}
src_prepare() {
cp "${FILESDIR}"/* .
cos-linux-mod_src_prepare
}
src_compile() {
cros_allow_gnu_build_tools
cos-linux-mod_src_compile
}
src_install() {
cos-linux-mod_src_install
}