divestedcg / real-ucode

All the microcodes, but packaged!

real-ucode

Overview

• AMD appears to primarily only include microcode for enterprise platforms in the linux-firmware repo.
  • https://divested.dev/misc/amd-ucode.txt
• Intel also appears to miss a few and also doesn't always include the latest available.
  • intel/Intel-Linux-Processor-Microcode-Data-Files#10

Compatibility

• CentOS 9/Stream
• Fedora 38/39

License

• See the LICENSE file

Prebuilts

• Fedora via Divested-RPM: https://divested.dev/index.php?page=software#divested-release

Usage

• Install the package

Verifying it took

• You can do this a few ways:
  • Running lscpu before and after, then diffing
  • Checking logs, eg. journalctl -b0 | grep -i microcode then -b-1

Status

Board	CPU	CPUID	Version	Change	Notes
ASUS M1605YA	7530U	00A50F00	302	0x0a50000d -> 0x0a50000f
ASUS M5402RA	6800H	00A40F41	301	0x0a404101 -> 0x0a404102	severe breakage, stuck at 400MHz after suspend
ASUS TUF Gaming X570	5900X	00A20F10	5003	already latest
ASUS TUF Gaming X670E	7950X	00A60F12	1809	already latest
Gigabyte B450-DS3H	3600	00870F10	F65b	already latest
Lenovo 15ACH6A	5800H	00A50F00	G9CN33WW	0x0a50000c -> 0x0a50000f
Lenovo S340-15API	3500U	00810F81	AMCN31WW	already latest
MSI A5EFK	5800H	00A50F00	E15CKAMS.10C	0x0a50000? -> 0x0a50000f
MSI A5M-288	5700U	00860F81	E155LAMS.115	0x08608103 -> 0x08608104
MSI X570 A-PRO	5900X	00A20F12	7C37vHL	0x0a20120a -> 0x0a20120e

Building

• git clone [THIS REPO]
• CentOS: rpmbuild -ba real-ucode.spec
• Fedora: rpmbuild -ba real-ucode.spec

Updating the microcode

• git clone [THIS REPO]
• git clone https://github.com/platomav/CPUMicrocodes
• git clone https://github.com/AndyLavr/amd-ucodegen
• cd amd-ucodegen
• git apply ../amd-ucodegen-tweak.diff
• make
• cd ../CPUMicrocodes
• mv ../amd-ucodegen/amd-ucodegen .
• source ../process-amd.sh
• source ../process-intel.sh
• update version/date in real-ucode.sh
• commit it with the short git hash of the CPUMicrocodes repo

Credits

• Huge thanks to Plato Mavropoulos for the actual microcode collection
  • https://github.com/platomav/CPUMicrocodes
• Andy Lavr for the AMD conversion program
  • GPL-2.0: https://github.com/AndyLavr/amd-ucodegen
• @chinobino for their extensive microcode collection
  • https://winraid.level1techs.com/t/offer-intel-cpu-microcode-archives/34261
• Contributors to the Winraid/Level1Techs forum for additional microcode
  • https://winraid.level1techs.com/t/intel-amd-via-freescale-cpu-microcode-repositories-discussion/32301

Other Notes

• There is an Arch Linux port on the AUR by @moparisthebest:
  • https://aur.archlinux.org/packages/amd-real-ucode-git
  • https://aur.archlinux.org/packages/intel-real-ucode-git