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#!/usr/bin/env bash
# Copyright 2024 Gentoo Authors
# This script is installed by sys-kernel/linux-firmware, it is executed by
# systemd's kernel-install, NOT by the traditional installkernel. I.e. this
# plugin is run when the systemd USE flag is enabled or
# SYSTEMD_KERNEL_INSTALL=1 is set in the environment.
COMMAND="${1}"
if [[ ${COMMAND} != add ]]; then
exit 0
fi
if [[ ${KERNEL_INSTALL_INITRD_GENERATOR} == dracut ]]; then
# Dracut bundles microcode in its initramfs images
[[ ${KERNEL_INSTALL_VERBOSE} == 1 ]] && echo \
"initrd_generator=${KERNEL_INSTALL_INITRD_GENERATOR} bundles CPU microcode, nothing to do here."
exit 0
fi
# do nothing if somehow make-amd-ucode-img is not installed
if ! command -v make-amd-ucode-img >/dev/null; then
[[ ${KERNEL_INSTALL_VERBOSE} == 1 ]] && echo \
"make-amd-ucode-img command not available"
exit 1
fi
if [[ -d /lib/firmware/amd-ucode ]]; then
[[ ${KERNEL_INSTALL_VERBOSE} == 1 ]] && echo \
"Generating AMD CPU Microcode early initramfs image..."
make-amd-ucode-img \
${KERNEL_INSTALL_STAGING_AREA}/microcode-amd \
/lib/firmware/amd-ucode ||
{ echo "make-amd-ucode-img failed" && exit 1; }
else
[[ ${KERNEL_INSTALL_VERBOSE} == 1 ]] && echo \
"No AMD CPU Microcode installed, nothing to do here."
fi
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