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#496 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by kimballen 22.08.2020 21:19

Here are some more

#497 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by Marvin 22.08.2020 21:43

This makes no sense, how are there so many different versions of the same microcode revison?!

#498 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by kimballen 22.08.2020 21:57

I do not know I leave it to someone who knows better therefore I posted them here

#499 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by SoniX 22.08.2020 22:59

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cpu00610F01_ver0600111F_2018-03-05 - 4 files

cpu00630F01_ver06003109_2018-02-27 - 5 files

how to determine really the latest version?

Edit:

Probably have to focus on the post-build Windows 10 Insider?
The last build has these microcodes and with what checksum?

#500 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by Marvin 23.08.2020 10:08

I guess we need a discussion about this. I did a few test editing AMD microcodes and if one changes the data in the AMD microcode file one can just put random data there and get a new checksum and a "new" microcode. It is not as protected as Intel where the checksum contained in the header covers the full microcode. So technically one could generate unlimited numer of AMD microcode files that MCExtractor asks to report.

I guess for AMD microcodes we need a "source log" moving forward, meaning where was the microcode exracted/obtained information is kept as metadata in MCExtractor/this thread?


As a proof of concept here is 3KB of RANDOM data with the first 20 bytes replaced with the AMD microcode header.
DO NOT USE THIS FILE, IT IS RANDOM DATA!!!!
!New_cpu00630F01_ver06003109_2018-02-27_02BB164E
Again, this is just random data with AMD microcode header.

#501 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by SoniX 23.08.2020 12:05

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Zitat von SoniX im Beitrag #499
cpu00610F01_ver0600111F_2018-03-05 - 4 files

cpu00630F01_ver06003109_2018-02-27 - 5 files

how to determine really the latest version?


For this file, I will consider this file as the last release -cpu00610F01_ver0600111F_2018-03-05_AC55EB96.bin
As it is in the last build of Windows 10 (2004).
Differences with similar files start with Offset 0x43C.


I don't know yet what to do with the second mCode.
I think to fix the version as the very first one so that UBU could not update it.

#502 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by plutomaniac 24.08.2020 00:45

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Zitat von kimballen im Beitrag #496
Here are some more

These make no sense to me. I thought about all possible cases and the only sort of logical explanation I can come up with is that these are either created randomly by someone for fun/research or they are sequential tests from AMD to some OEM to test if any of them fix a bug or similar. These extremely weird ones can be verified only if we know where they came from. Either way, they cannot be included in MCE and I'll have to consider the ones we already have had for years as the proper/stable/final microcodes. Also, as I said before, the included Intel one is not a valid microcode so it must be ignored.

Zitat von Marvin im Beitrag #500
I did a few test editing AMD microcodes and if one changes the data in the AMD microcode file one can just put random data there and get a new checksum and a "new" microcode.[/b]

This is known and explained at the CPUMicrocodes repo. The AMD checksum at MCE is created for our own sanity/verification and unless AMD stops being idiots by not including a basic Checksum32, there is nothing more we can do.

Zitat von SoniX im Beitrag #501
I think to fix the version as the very first one so that UBU could not update it.

There is nothing to do. These microcodes will not be included in MCE DB or Github Repository.

#503 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by kimballen 26.08.2020 16:27

found this in som in som old hp BIOSes

cpu10674_plat01_ver00000403_2007-06-01_PRD_F328252B ---->> sp38121
cpu206D7_plat6D_ver0000070E_2013-01-25_PRD_120A3A6A---->> sp64701
cpu30678_plat02_ver00000825_2014-08-06_PRD_E2C91CAA---->> sp68623

#504 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by Marvin 26.08.2020 20:10

A LOT of new in Windows 10 build 20201.
!New_cpu306F2_plat6F_ver00000044_2020-05-27_PRD_AE06DB92.bin
!New_cpu50653_plat97_ver01000159_2020-06-18_PRD_8A7CB578.bin
!New_cpu50654_platB7_ver02006A08_2020-06-16_PRD_8B444904.bin
!New_cpu50656_platBF_ver04003003_2020-06-18_PRD_FBE53D0B.bin
!New_cpu50657_platBF_ver05003003_2020-06-18_PRD_11302452.bin
!New_cpu806E9_plat10_ver000000DE_2020-05-27_PRD_08079D98.bin
!New_cpu806E9_platC0_ver000000DE_2020-05-27_PRD_86ED8490.bin
!New_cpu806EA_platC0_ver000000E0_2020-06-17_PRD_BCACEE16.bin
!New_cpu806EB_platD0_ver000000DE_2020-06-03_PRD_D36B66D0.bin
!New_cpu806EC_plat94_ver000000DE_2020-05-18_PRD_36F78CF0.bin
!New_cpu906E9_plat2A_ver000000DE_2020-05-26_PRD_224E7904.bin
!New_cpu906EA_plat22_ver000000DE_2020-05-25_PRD_76A2F81F.bin
!New_cpu906EB_plat02_ver000000DE_2020-05-25_PRD_DC6BE1EE.bin
!New_cpu906EC_plat22_ver000000DE_2020-06-03_PRD_9AFB648B.bin
!New_cpu906ED_plat22_ver000000DE_2020-05-24_PRD_BAD46B57.bin
!New_cpuA0652_plat20_ver000000DE_2020-06-07_PRD_1965B2DB.bin
!New_cpuA0660_plat80_ver000000DE_2020-06-07_PRD_D128A676.bin
!New_cpuA0661_plat80_ver000000DE_2020-06-07_PRD_A9FDC63D.bin

#505 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by plutomaniac 26.08.2020 21:59

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Nice, thank you very much kimballen and Marvin!

#506 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by bronxamigo 02.09.2020 03:46

Microsoft has published what they call the latest microcodes: https://support.microsoft.com/help/45581...crocode-updates

Funny thing is that the versions are several cycles behind!

#507 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by pinguicodes 03.09.2020 02:50

New microcode from Windows build 20206:
cpu506F1_plat01_ver00000032_2020-03-07_PRD_6538E5EA.bin
cpu706A1_plat01_ver00000034_2020-06-09_PRD_FE4655B4.bin
cpu706A8_plat01_ver00000018_2020-06-09_PRD_1D9A5DFE.bin
cpu706E5_plat80_ver0000009E_2020-07-22_PRD_06DDA133.bin
cpuA0653_plat22_ver000000DE_2020-06-07_PRD_C7F3CE9A.bin
cpuA0655_plat22_ver000000DE_2020-06-07_PRD_A8A672BB.bin

#508 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by plutomaniac 03.09.2020 13:51

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Zitat von pinguicodes im Beitrag #507
New microcode from Windows build 20206:

Thank you, added to next database. Nothing new for AMD, right?

#509 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by Marvin 03.09.2020 14:21

Nothing new for AMD in Windows 10 build 20206.

#510 RE: Intel, AMD, VIA & Freescale CPU Microcode Repositories Discussion by pokuly 03.09.2020 17:12

So many Intel µC updates smells like another Zombiespectre. 706A1 34 works nicely on my ASRock j5005. Still not managed to update the TXE 4 though :(

Edit: Seems we have another tiny bit of speed back. My 8700k does again faster with the latest 906EA DE. I am at ~141x speed now. Related earlier quote of mine: "The first time since a while i see flac encoding with my setting became faster after D2! From ~133x to ~138x speed. Before all mitigations it was above 150x speed."

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