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interferenc/patches.txt

Created February 4, 2018 08:04
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Skylake-X and X299 BIOS patches to disable MSR 0xE2 lock AND TSC Fix
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patches.txt
# SiInit
299D6F8B-2EC9-4E40-9EC6-DDAA7EBF5FD9 12 P:81E10080000033C1:9090909090909090
# PpmInitialize Reset IA32_TSC_ADJUST to 0 instead of enforcing 0xE2 lock
3FFCAE95-23CF-4967-94F5-16352F68E43B 10 P:742CB9E20000000F3248C1E220480BC20FBAE00F488944240872130FBAE80F89442408488B54240848C1EA200F30:BA00000000B800000000B93B0000000F309090909090909090909090909090909090909090909090909090909090
# CpuInitPei Reset IA32_TSC_ADJUST to 0 instead of enforcing 0xE2 lock
01359D99-9446-456D-ADA4-50A711C03ADA 12 P:B9E20000000F328BC8BE0080000023CE0BCF75190BC6894424088954240C8B54240C8B442408B9E20000000F30:BA00000000B800000000B93B0000000F3090909090909090909090909090909090909090909090909090909090
# CpuMpDxe to disable TSC writes
40BEAB40-CECE-4909-B133-20A413AE19E9 10 P:488BD6B9100000008BC648C1EA200F30:90909090909090909090909090909090
@StevenWJ
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Hi Faragó,

The installation got stuck before either TSCAdjustRest or VoodooTSCSync kick in. That's why I was trying to patch my BIOS.
I disassembled your patches and managed to find the point then applied the patch to my BIOS.
And you are right, that doesn't work since the machine won't boot if I write MSR 0x3B.
I finally figure out the issue is caused by my Ivy bridge CPU.
Though the CPU works well with my Z9PE-D8 WS, GAX79-UP4 somehow just doesn't install Mac OS with this CPU.
Once I switched to a Sandy bridge CPU, the motherboard booted correctly and finished the installation.
Due to the poor power management of Sandy bridge CPU, I ended up give up this project.
However, I still learned a lot through the process. Thank you for your work and inspiration on this issue.

Regards,
Steven

@wyhtc
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wyhtc commented Jun 10, 2021 •
edited

Hello,

PpmInitialize Reset IA32_TSC_ADJUST to 0 instead of enforcing 0xE2 lock patch is invalid in ASUS X299 3000 series version BIOS，and TSCAdjustReset.kext also invalid in macOS 12 Monterey with OpenCore bootloader. I tried to find this patch，but it not find in GUID 01359D99-9446-456D-ADA4-50A711C03ADA PE32 images.
Could you help me how to do？

Thanks.

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