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: /bin/ [ drwxr-xr-x ]
name : update-microcode-initrd #!/bin/sh set -e # based on intel-microcode & amd64-microcode initramfs-tools hooks # Copyright (C) 2012-2016 Henrique de Moraes Holschuh <hmh@debian.org> # Copyright (C) 2019 Canonical Ltd # Copyright (C) 2020 Canonical Ltd # Released under the GPL v3 # # Generates a copy of the minimal microcode for all Intel/AMD processors # and installs it to the early initramfs EFWD=$(mktemp -d "/tmp/microcode-initrd_XXXXXXXXXX") EFWCD="${EFWD}/d/kernel/x86/microcode" # note: to build a reproducible early initramfs, we force # the microcode component ordering inside the microcode # firmware file, as well as the timestamp and ordering of # all cpio members. mkdir -p "${EFWCD}" find /lib/firmware/amd-ucode/ -maxdepth 1 -type f -print0 | LC_ALL=C sort -z | xargs -0 -r cat 2>/dev/null >"${EFWCD}/AuthenticAMD.bin" iucode_tool --quiet --write-to="${EFWCD}/GenuineIntel.bin" /lib/firmware/intel-ucode/ find "${EFWD}" -print0 | xargs -0r touch --no-dereference --date="@0" ( cd "${EFWD}/d" ; find . -print0 | LC_ALL=C sort -z | cpio --null --reproducible -R 0:0 -H newc -o --quiet > "${EFWD}/microcode.cpio" ) mv "${EFWD}/microcode.cpio" /boot/ [ -d "${EFWD}" ] && rm -fr "${EFWD}"