What were you trying to do that didn't work?

Have amd-ucode early loading work

Please provide the package NVR for which bug is seen:

linux-firmware-20230824-118.git0e048b06.el8.noarch
linux-firmware-20230310-135.el9_2.noarch
linux-firmware-20230814-139.el9.noarch

How reproducible:

100%

Steps to reproduce

Dracut generates AuthenticAMD.bin by doing more or less `cat /usr/lib/firmware/amd-ucode/* > AuthenticAMD.bin`, AuthenticAMD.bin must only contains the uncompressed amd-ucode files, no README*, no .xz.

In Centos stream 8, `linux-firmware` contains (https://centos.pkgs.org/8-stream/centos-baseos-x86_64/linux-firmware-20230824-118.git0e048b06.el8.noarch.rpm.html):

/usr/lib/firmware/amd-ucode/README
/usr/lib/firmware/amd-ucode/microcode_amd.bin
/usr/lib/firmware/amd-ucode/microcode_amd_fam15h.bin
/usr/lib/firmware/amd-ucode/microcode_amd_fam16h.bin
/usr/lib/firmware/amd-ucode/microcode_amd_fam17h.bin
/usr/lib/firmware/amd-ucode/microcode_amd_fam19h.bin

In EL 9.2 (https://rockylinux.pkgs.org/9/rockylinux-baseos-x86_64/linux-firmware-20230310-135.el9_2.noarch.rpm.html)

/usr/lib/firmware/amd-ucode/README.xz
/usr/lib/firmware/amd-ucode/microcode_amd.bin.xz
/usr/lib/firmware/amd-ucode/microcode_amd_fam15h.bin.xz
/usr/lib/firmware/amd-ucode/microcode_amd_fam16h.bin.xz
/usr/lib/firmware/amd-ucode/microcode_amd_fam17h.bin.xz
/usr/lib/firmware/amd-ucode/microcode_amd_fam19h.bin.xz

In Centos stream 9 (https://centos.pkgs.org/9-stream/centos-baseos-x86_64/linux-firmware-20230814-139.el9.noarch.rpm.html)

/usr/lib/firmware/amd-ucode/README.xz
/usr/lib/firmware/amd-ucode/microcode_amd.bin
/usr/lib/firmware/amd-ucode/microcode_amd_fam15h.bin
/usr/lib/firmware/amd-ucode/microcode_amd_fam16h.bin
/usr/lib/firmware/amd-ucode/microcode_amd_fam17h.bin
/usr/lib/firmware/amd-ucode/microcode_amd_fam19h.bin

Expected results

It works

Actual results

At least on EL8, having the README prevented early loading to work, haven't tested with EL9

Additional info

This can be fixed by packaging (moving the README* to `/usr/share/doc/...`), or by fixing dracut (https://github.com/dracutdevs/dracut/pull/2544). This also impacts Fedora.

To uncompress the *bin.xz in 9.2 you can backport https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/WHENCE?id=ee91452dac5abfc4c5b9827cf55e701d8c0ca678