12500H Efficiency Core Issue

[hykilpikonna]

My setup:

Part	Name
MB	Erying i5-12500H ITX (Taobao)
RAM	32GB (2 * 16) DDR4 3200 Samsung (Taobao)
GPU	AMD Vega 64 Reference Card (Kijiji)
SSD	WD Blue SN570 500GB (Canada Computers)
PSU	Lian Li SP 750 W 80+ Gold (Canada Computers)
Fan	Jonsbo HX4170D (Taobao)
Wifi	Intel AX210 (Taobao)
Case	PCCooler i100 Pro (Taobao)

The system was stuck on #[EB|LOG:EXITBS:START], but successfully launched after I disabled the efficiency cores in bios. ProvideCurrentCpuInfo is correctly set to True.

I first tried configuring my own EFI from a 12th-Gen template, and then tried using many people's existing Erying i7-12700H or i9-12900HK EFI configurations, all stuck on the same #[EB|LOG:EXITBS:START] message. Many others using the 12500H board also reported this issue.

Log: opencore-2023-09-25-052706.txt

[hykilpikonna]

Update: Disabling Hyperthreading while keeping all E-cores enabled also works, and have a higher multi-threading score.

The topology for 12500H is 4P+8E with a total of 16 threads.

Disabling E-cores while enabling Hyperthreading show 4 cores 8 threads: https://browser.geekbench.com/v6/cpu/2783616

Disabling Hyperthreading while enabling E-cores show 12 cores: https://browser.geekbench.com/v6/cpu/2786449

[Wzhhhh123]

哥们我解决了，加内核补丁跳过EB阶段，就可以8核16线程
https://browser.geekbench.com/v6/cpu/5171681

[Wzhhhh123]

[Wzhhhh123]

https://bbs.pcbeta.com/viewthread-1995216-1-1.html

[CCC222gmail]

I tested your EFI and the system was stuck on #[EB|LOG:EXITBS:START]. what is the problem? My motherboard is erying12500H ITX.

[Wzhhhh123]

I tested your EFI and the system was stuck on #[EB|LOG:EXITBS:START]. what is the problem? My motherboard is erying12500H ITX.

I tested this bypass EB patch, because the patch is a patch with AMD bypass EB, it was valid before macos13.3, and after that it is still stuck EB, I am still working on it, and it has not been solved.

[CCC222gmail]

Come on, I look forward to sharing your results