Forum - RE: MC Extractor: Intel, AMD & VIA Microcode Extraction Tool

Win-Raid Forum (Drivers - Firmware - Modding) � Special Topics � CPU Microcodes � MC Extractor: Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion

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#196 | RE: MC Extractor: Intel, AMD & VIA Microcode Extraction Tool datum

Mon Nov 26, 2018 4:24 pm

Okay, thanks for your help.

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#197 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Wed Dec 12, 2018 9:59 pm (Last edited: Wed Dec 12, 2018 9:59 pm)

I don´t know if someone mentioned it. For Z370 and Z390 are different MC for 8 core CPU. For Z370 906EC A2 should be used and for Z390 906EC A0.

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#198 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Sat May 11, 2019 2:23 pm

Inside AMD Combo_PI 1.0.0.1 are some new µCodes:
!New_cpu00800F11_ver08001138_2019-02-04_EEAE7E6D.bin
!New_cpu00800F82_ver0800820C_2019-02-04_067D54A0.bin
!New_cpu00810F10_ver08101013_2018-11-29_AF085197.bin
!New_cpu00870F10_ver0870100A_2019-03-22_3F0BF952.bin

Source : http://asrock.pc.cdn.bitgravity.com/BIOS...nd(2.30)ROM.zip

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#199 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Sat May 11, 2019 2:27 pm

Yes, they were reported yesterday as well. Thank you "[P3D] Crashtest", regardless. For microcodes not in DB, please post at Intel, AMD & VIA CPU Microcode Repositories Discussion.

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#200 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Thu Jul 11, 2019 3:26 pm

Where MCE 1.35 version?

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#201 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Thu Jul 11, 2019 4:06 pm

Zitat von Michael_Code im Beitrag #200
Where MCE 1.35 version?

Read the Note of the latest commit.

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#202 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Thu Jul 11, 2019 5:00 pm

Zitat von plutomaniac im Beitrag #201
Zitat von Michael_Code im Beitrag #200
Where MCE 1.35 version?

Read the Note of thelatest commit[/URL].

Thank you!

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#203 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Sat Aug 31, 2019 1:48 am (Last edited: Sat Aug 31, 2019 1:52 am)

@plutomaniac might probably be a false positive but the antivirus is telling me the latest MCE.exe has the "occamy.c" trojan
this is only for the 1.37 version as the 1.36 seems "clean" according to windows antivirus.

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#204 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Sat Aug 31, 2019 2:51 am (Last edited: Sat Aug 31, 2019 2:52 am)

Obviously a false positive, usually of PyInstaller. You can always install python and use the script by itself or build an executable yourself.

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#205 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Sun Dec 15, 2019 9:31 pm (Last edited: Sun Dec 15, 2019 9:32 pm)

Missing on download page

JanCerny has attached files to this post

cpu306F0_platEF_verFFFF0017_2013-07-30_PRE_BFAEF932.zip

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#206 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Tue Dec 17, 2019 3:58 am

Zitat von oldirdey im Beitrag #197
I don´t know if someone mentioned it. For Z370 and Z390 are different MC for 8 core CPU. For Z370 906EC A2 should be used and for Z390 906EC A0.

Not sure what you are saying exactly.

cpu906EC_plat22_ver000000A0_2018-09-17_PRD_8CDAD79E.bin
cpu906EC_plat22_ver000000A2_2018-09-29_PRD_FCAF004B.bin

These microcodes are interchangeable.

Zitat von JanCerny im Beitrag #205
Missing on download page

There are no Intel pre-production microcodes in the GitHub repository.

I have added the 306F0 microcode to this thread, which includes ES/QS microcodes.

1. EVGA Z370 Classified K, Core i9-9900KS @ 5.0 GHz, 4x8GB Patriot Viper Steel DDR4-4133 MHz,
Samsung 970 EVO Plus NVMe 2TB, Asus 2070 Mini OC, Corsair AX850
2. Gigabyte Z390 UD, Core i7-9700K @ 4.9 GHz, 4x8GB Patriot Viper Steel DDR4-3733 MHz,
Samsung 950 Pro NVMe 512MB, GALAX GTX 1060 OC, EVGA G2 850W

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#207 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Wed Jul 22, 2020 7:48 am (Last edited: Wed Jul 22, 2020 8:01 am)

I've found these mCodes in Lenovo T480s latest BIOS

!New_cpu406E3_platC0_ver000000DC_2020-04-27_PRD_459D4483.bin
!New_cpu806E9_platC0_ver000000D6_2020-04-27_PRD_C979B5EA.bin
!New_cpu806EA_platC0_ver000000D6_2020-04-27_PRD_D9DD064F.bin

Updated:
I used outdated MC Extractor 1.38. Those codes were added into 1.43 release.

tarask1n has attached files to this post

20200722_Intel.zip

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#208 | RE: MC Extractor: Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Fri Aug 21, 2020 3:19 am (Last edited: Fri Aug 21, 2020 8:40 pm)

SoniX

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Posts:	2420
Registered since:	06.01.2013
Location:	Russia

Now MCE can count the number of found mCodes. But I understand that he only counts those mCodes that he knows?
If so, can you add another option?
First, we look for and calculate the mCodes that we know.
Then we search and calculate everything only by the general search string
Then we look for and count everything, only by 'pat_acpu'
Compare the results of both searches.
If the results match, then nothing new.
If 'pat_acpu' counter is greater than the known counter, then something has been found and can be analyzed.

If believe AMD's statements, then until the end there will be new 4xxx models, and next year 5xxx models for laptops. And it is difficult to say what the CPUID will be.

Edit/Added:

No calc/count. Example

1
2
3
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while (found (pat_acpu))
        if (check (cpu_id) == false)
                printf ("Found Unknown %X %X\n", CPUID, Offset)
 
 

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#209 | RE: MC Extractor: Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Fri Aug 21, 2020 9:54 pm (Last edited: Fri Aug 21, 2020 9:58 pm)

Zitat von SoniX im Beitrag #208
Now MCE can count the number of found mCodes. But I understand that he only counts those mCodes that he knows?

MCE counts all the microcode patterns detected by pat_icpu + pat_acpu + pat_vcpu + pat_fcpu. There is one pattern for each vendor which should detect all their microcodes and prevent false positives as much as possible. In this case, there is no need to have an extra less strict AMD pattern because it would give false positives and whatever MC count comes from there will be inaccurate.

Unless absolutely necessary (i.e. vendor changed Header structure completely, never happened so far) there should only be 1 pattern per vendor because regex searches are generally very complicated/slow. Optimizations can be made (and are made in MCE) to make them faster but the rule of thumb is to keep them as infrequent as possible.

Regarding CPUID, MCE does not rely on that for the regex patterns. Since AMD, in their infinite wisdom, do not have a microcode size in the header (even though half of it is "reserved"), MCE needs to keep a hardcoded list of generations and their static (unique to AMD) microcode sizes. This is done via the CPUID but only after the microcode has been detected/allowed by the regex pattern:

If a new microcode CPUID is found and MCE does not know its static size yet, an error is shown but the microcode is shown/accepted:

So the problem is not with CPUID. It is a matter of balancing how strict, fast and future-proof the regex pattern is:

The issue with Zen 3 was that the Loader ID value range was set to 0-4 but Zen 3 started using 5 so it needed to be increased first to detect a valid microcode before dealing with the Size (CPUID). Honestly, any vendor can change many things in the header which will break the regex searches (reserved fields, revisions etc) but for AMD, I increased Loader ID to 6 now (should cover the next generation) to be on the safe side and hopefully without extra false positives.

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#210 | RE: MC Extractor Intel, AMD, VIA & Freescale Microcode Extraction Tool Discussion datum

Sun Sep 13, 2020 7:25 pm (Last edited: Sun Sep 13, 2020 7:28 pm)

Zitat von elisw im Beitrag #203
@plutomaniac might probably be a false positive but the antivirus is telling me the latest MCE.exe has the "occamy.c" trojan
this is only for the 1.37 version as the 1.36 seems "clean" according to windows antivirus.

Just came here to post this, was trying to download MC Extractor v1.48.1 r159 and Windows Defender reported a trojan, had a small scare thinking the MC Extractor github was compromised, edge removed it as soon as it was downloaded. Did not happen with R157. Maybe a new version needs to be pushed to remediate this issue?

UPDATE: For some reason, windows is calling r157 as a PUP (Potentially Unwanted Program), still much nicer than to call it a trojan and immediately blocking it, lol

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