| Item | Model | Notes |
|---|---|---|
| CPU | Intel i7 8700 | |
| MotherBoard | ASRock Z390 Phantom Gaming-ITX/ac | |
| WIFI | BLE | BCM94360CS2 |
| Memory | Asgard 32GB * 2 | OC doesn't require remapping 32GB single memory like Clover did. |
| dGPU | RX460 | |
| System | macOS 11.0.1 | direct upgrade from 10.15.6 to 11.0.1 using build 2aa2cfe. |
| Location | Item | Default Value | My Value | Reason and Result |
|---|---|---|---|---|
| Advanced | Fast Boot | Disabled | Disabled | DK. |
| Advanced | CFG Lock | Disabled | Disabled | Need more resarch |
| Advanced | VT-d | Enabled | Enabled | Enable quirk DisableIoMapper then no need to disable VT-d. |
| Advanced | CSM | Enabled | Disabled | Everybody kept saying disable it but it seems to be no harm except for the super high resolution during booting on my 4K monitor. It's also no harm disabling it so up to you. |
| Advanced | VT-x | Enabled | Enabled | Need more research |
| Advanced | Above 4G decoding | Disabled | Disabled | Need more research |
| Advanced | Hyper Threading | Enabled | Enabled | Need more research |
| Advanced | Execute Disable Bit | Enabled | Enabled | Need more research |
| Advanced | EHCI/XHCI Hand-off | Disabled | Enabled | Boot stalls if with USB devices connected. Seems to be the only necessary change in BIOS. |
| Others | OS type | No option | No option | No option |
| Advanced | Intel SGX | Enabled | Enabled | Need more research |
| Security | Intel(R) Platform Trust Technology | Disabled | Disabled | Need more resarch |
| Advanced | Thunderbolt | Enabled | Enabled | Need more resarch |
| Advanced | iGPU Multi-Monitor | Disabled | Disabled | Probably necessary for those using dGPU. |
Not all the configs were explained here
SSDT-AMAC fix RTC bug
macOS requires RTC._STA to return 0x0F, meaning RTC enabled. While Asrock BIOS (ASUS and some other compaines too) enabled AWAC and disabled RTC by default (Probably for Windows).
After reviewing the codes, I replaced the old renaming hotpatch with SSDT-AWAC SSDT patch.
The renaming hot patch replaced the If ((STAS == One)) of RTC._STA in DSDT with If ((0xFF || 0xFFFF)) , so the RTC._STA will always return 0x0F. It might lead to a conflict in the future, since both RTC and AWAC are enabled at the same time.
If you failed to boot, you may find the renaming method in an older commit, or use SSDT-RTC0 instead.
Reference:
FIX for boot hangs after BIOS update (ACPI PATCH), ACPISamples
SSDT-PLUG enables Native Power Management
XCPM was said to bring better performance ( or sth blah blah ). At least it's harmless.
Check status by sysctl -n machdep.xcpm.mode. 1 for enabled.
You might need to change PR00 to CPU0, depending on your MB model. You could query this by ioreg -p IODeviceTree -c IOACPIPlatformDevice -k cpu-type -k clock-frequency | egrep name | sed -e 's/ *[-|="<a-z>]//g'
You might need to enable Intel SpeedStep in your BIOS. For my MB it's enabled by default.
Reference: Fixing Power Management, SKL+平台XCPM+HWP完整原生电源管理探究, macOS Native CPU/IGPU Power Management, SSDT-PLUG.dsl
SSDT-PPMC fix energy saver options
This SSDT fix seems to be harmless.
You could verify it by looking into Preferences. You should be able to see 5 options (including power nap) instead of 2.
- DisableIoMapper = YES.
This option is a preferred alternative to dropping DMAR ACPI table and disabling VT-d in firmware preferences, which does not break VT-d support in other systems in case they need it.