m93-opencore-config

OpenCore configuration for my personal desktop.

OpenCore version tested with: 0.5.6

macOS version tested with: 10.15.3

Please do not use this with any newer or older version as some options may no longer exist or be interpreted differently, or new options may be needed in order to successfully boot.

Specs

• System: ThinkCentre M93 Tiny (10A4 / A02400)
• CPU: i3 4130T
• GPU: Intel HD Graphics 4400
• RAM: 8 GB Kingston 1333 MHz DDR3
• SSD: 120 GB Samsung SM863
• Wifi: ASUS Broadcom BCM94352HMB
• Audio: Realtek ALC283

BIOS Settings

See the screenshots under the BIOS directory. TODO

OpenCore config noteworthy things

• SIP is completely enabled
• ig-platform-id is set to 0x00030D22 and the device-id is spoofed to 0x04120000 for the HD 4400 to work like HD 4600.
• vault.plist is disabled for now.
• The system is set to play the startup beep/bong on its internal speaker. Drop the Resources folder from OcBinaryData in your EFI/OC folder. Strip out the excess files for languages you don't use for faster bootup times.

ScanPolicy enabled flags

ScanPolicy is set to a value of 2162947 or binary 001000010000000100000011. This means the following flags are set:

• OC_SCAN_FILE_SYSTEM_LOCK (bit 0)
• OC_SCAN_DEVICE_LOCK (bit 1)
• OC_SCAN_ALLOW_FS_APFS (bit 8)
• OC_SCAN_ALLOW_DEVICE_SATA (bit 16)
• OC_SCAN_ALLOW_DEVICE_USB (bit 21)

Please refer to the OpenCore manual for the meaning of these flags. In short, these flags allow scanning of APFS partitions (for macOS) on SATA and USB drives only. The USB part should be temporary.

ACPI edits

See the ACPI subfolder.

• EC: EC patch
• EHCx_OFF: Turns off the EHC1 and EHC2 controllers, instead putting all devices on the USB3 controller
• PLUG: Sets plugin-type to 1, needed for AGPM and proper CPU power management.
• PM: CPU power management data generated by ssdtPRgen
• UIAC: SSDT defining which ports to keep enabled, for USB Inject All

Device Properties

• PciRoot(0x0)/Pci(0x1b,0x0): Realtek ALC283
  • layout-id: 3, used to tell AppleALC which layout ID to pick to get the onboard sound working. This is the only layout that worked for me with the internal speaker.
• PciRoot(0x0)/Pci(0x2,0x0): Intel HD Graphics 4400
  • ig-platform-id: 0x19120001 (reversed) to enable a connectorless mode for the onboard graphics. Used to get acceleration working in various areas.
• PciRoot(0x0)/Pci(0x1c,0x3)/Pci(0x0,0x0): Broadcom BCM94352HMB
  • brcmfx-country: NL to make optimal use out of the Broadcom card and to reduce possible interference with surrounding devices.

Drivers

Not included in this repo, I use the following drivers:

• ApfsDriverLoader
• AudioDxe
• FwRuntimeServices (in the OpenCore package)
• HFSPlus

Kexts

Not included in this repo, I use the following kexts:

• AirportBrcmFixup: Used to set a country code and also to disable WoWLAN to prevent unnecessary wakeups.
• AppleALC: Fixes for HDMI and onboard audio
• BrcmPatchRAM3 + BrcmFirmwareData + BrcmBluetoothInjector: Used to enable Bluetooth for the Broadcom card.
• IntelMausi: Driver for the built-in Ethernet controller
• Lilu: Requirement for most other kexts in this list
• USB Inject All: Used for injecting only USB ports which are in use, to keep the system inside the 15 port limit
• VirtualSMC: SMC emulator
• WhateverGreen: Required for proper functioning of both the integrated graphics card in headless/connectorless mode, and the RX580

Current issues

Random graphical glitches

Sometimes, most notably when using System Preferences, the UI hangs for a bit and then graphical corruption and heavy flashing may occur. Needs further investigation.