AMD Microcode ?

Magister · 发表于 2023-08-22 22:57:26

Edited by Magister at 2023-08-22 13:47

I have a SER5 5600H, BIOS V1.15_P4C7M43_Blink

I am using Linux, I see that I have the microcode old version 0x0A50000C in the BIOS, but I discovered a new microcode version 0x0A50000D dated 2021-10-14. It means the one in the BIOS is really old already.

new one:
cpu00A50F00_ver0A50000D_2021-10-14_DDD9A4AA.bin

I successfully patched my CPU with it, but I was wondering if you have a newer version of the microcode especially for mitigations

$ sudo dmesg | grep -i microcode
[ 0.051345] Speculative Return Stack Overflow: IBPB-extending microcode not applied!
[ 0.051346] Speculative Return Stack Overflow: Mitigation: safe RET, no microcode
[ 0.717490] microcode: microcode updated early to new patch_level=0x0a50000d
[ 0.717525] microcode: CPU0: patch_level=0x0a50000d
[ 0.717525] microcode: CPU1: patch_level=0x0a50000d
[ 0.717528] microcode: CPU3: patch_level=0x0a50000d
[ 0.717528] microcode: CPU4: patch_level=0x0a50000d
[ 0.717528] microcode: CPU5: patch_level=0x0a50000d
[ 0.717529] microcode: CPU7: patch_level=0x0a50000d
[ 0.717529] microcode: CPU6: patch_level=0x0a50000d
[ 0.717531] microcode: CPU8: patch_level=0x0a50000d
[ 0.717531] microcode: CPU9: patch_level=0x0a50000d
[ 0.717532] microcode: CPU10: patch_level=0x0a50000d
[ 0.717532] microcode: CPU11: patch_level=0x0a50000d
[ 0.717747] microcode: CPU0: new patch_level=0x0a50000d
[ 0.717749] microcode: CPU3: new patch_level=0x0a50000d
[ 0.717530] microcode: CPU2: patch_level=0x0a50000d
[ 0.717944] microcode: CPU1: new patch_level=0x0a50000d
[ 0.717946] microcode: CPU2: new patch_level=0x0a50000d
[ 0.717949] microcode: CPU8: new patch_level=0x0a50000d
[ 0.717952] microcode: CPU9: new patch_level=0x0a50000d
[ 0.717978] microcode: CPU6: new patch_level=0x0a50000d
[ 0.717981] microcode: CPU7: new patch_level=0x0a50000d
[ 0.718007] microcode: CPU4: new patch_level=0x0a50000d
[ 0.718010] microcode: CPU5: new patch_level=0x0a50000d
[ 0.718011] microcode: CPU10: new patch_level=0x0a50000d
[ 0.718016] microcode: CPU11: new patch_level=0x0a50000d
[ 0.718025] microcode: Microcode Update Driver: v2.2.

复制代码

beelink · 发表于 2023-08-23 13:47:06

Hello there
Sorry for that
We don't have the new microcode for SER5600

gsky · 发表于 2023-09-09 18:43:50

Two questions for you:
1. how did you determine there was a newer firmware for your CPU?
2. how did you patch it yourself?

fxnoob · 发表于 2023-09-09 19:37:20

gsky replied at 2023-09-09 18:43
Two questions for you:
1. how did you determine there was a newer firmware for your CPU?
2. how did ...

You can patch manually linux kernel, the system allows it. Windows, nope, since is closed source OS.

gsky · 发表于 2023-09-09 19:50:27

How did you determine there was a newer firmware for your CPU?

fxnoob · 发表于 2023-09-09 21:19:22

For AMD processors the microcode update files are provided by linux-firmware. Is a system package.

beelink · 发表于 2023-09-11 16:24:21

gsky replied at 2023-09-09 18:43
Two questions for you:
1. how did you determine there was a newer firmware for your CPU?
2. how did ...

Hello there
We will update the BIOS only when the machine has certain bugs that need to be updated.
If you need, We will send BIOS files and tutorials to customers for patching

Magister · 发表于 2023-09-11 22:22:35

Edited by Magister at 2023-09-11 10:02

gsky replied at 2023-09-09 06:50
How did you determine there was a newer firmware for your CPU?

I cannot answer, everytime, the forum says that my post needs moderation?!?

Magister · 发表于 2023-09-11 22:41:59

Search for "U p d a t i n g y o u r A M D m i c r o c o d e i n L i n u x"

Magister · 发表于 2023-10-10 19:27:40

For those interested, there is a new microcode for the 5600H, while the BIOS still have the old 2021 version "C", the new version "F" is dated 2023-07-07, patching latest vulnerabilities.

[ 0.720055] microcode: microcode updated early to new patch_level=0x0a50000f
[ 0.720087] microcode: CPU1: patch_level=0x0a50000f
[ 0.720087] microcode: CPU0: patch_level=0x0a50000f
[ 0.720089] microcode: CPU6: patch_level=0x0a50000f
[ 0.720089] microcode: CPU2: patch_level=0x0a50000f
[ 0.720089] microcode: CPU3: patch_level=0x0a50000f
[ 0.720090] microcode: CPU5: patch_level=0x0a50000f
[ 0.720090] microcode: CPU4: patch_level=0x0a50000f
[ 0.720093] microcode: CPU11: patch_level=0x0a50000f
[ 0.720093] microcode: CPU8: patch_level=0x0a50000f
[ 0.720093] microcode: CPU9: patch_level=0x0a50000f
[ 0.720093] microcode: CPU10: patch_level=0x0a50000f
[ 0.720286] microcode: CPU6: new patch_level=0x0a50000f
[ 0.720286] microcode: CPU7: patch_level=0x0a50000f
[ 0.720485] microcode: CPU7: new patch_level=0x0a50000f
[ 0.720490] microcode: CPU10: new patch_level=0x0a50000f
[ 0.720490] microcode: CPU11: new patch_level=0x0a50000f
[ 0.720491] microcode: CPU0: new patch_level=0x0a50000f
[ 0.720492] microcode: CPU1: new patch_level=0x0a50000f
[ 0.720560] microcode: CPU2: new patch_level=0x0a50000f
[ 0.720564] microcode: CPU4: new patch_level=0x0a50000f
[ 0.720564] microcode: CPU5: new patch_level=0x0a50000f
[ 0.720564] microcode: CPU3: new patch_level=0x0a50000f
[ 0.720568] microcode: CPU8: new patch_level=0x0a50000f
[ 0.720577] microcode: CPU9: new patch_level=0x0a50000f
[ 0.720587] microcode: Microcode Update Driver: v2.2.

复制代码