OpenCore EFI for ASRock X570 Pro 4 with AMD Ryzen

Verified Specification

Component	Model
CPU	AMD Ryzen 9 5900 @ 4.8GHz
Motherboard	ASRock X570 Pro4
RAM	32GB (2 x 16GB) DDR4 @ 2667 MHz
GPU	AMD Radeon RX 5700 XT (8176 MB)
Audio Chipset	Realtek ALC1200
Ethernet	Intel(R) I211.
WiFi & Bluetooth	-
OS Disk (NVMe)	Samsung 980 PRO 512GB

macOS version: 11.6.6 (20G624)
OpenCore version: 0.8.0

Software Compatibility

• ❌ [NOT WORKING*] Monterey (12.x).
• ✅ [WORKING] Big Sur (11.x)

*Monterey is not supported yet due to the Ethernet issue of SmallTreeIntel82576.kext. You can try AppleIGB kext, it works on some systems. If it does not work you have to stay on Big Sur and wait for SmallTree's update.

Installation

Bootable USB

1. Follow this guide to create your bootable USB.

2. Clone this repository and copy "BOOT" & "OC" directories to your "EFI" directory on your bootable USB. The structure should look somewhat like this: EFI -> BOOT, OC.

Modifying kernel patches

3. Modify Core Count patches to match your CPU's cores amount.

• Find three algrey - Force cpuid_cores_per_package patches under Kernel -> Patch in your config.

• Modify these patches for your CPU physical cores. Change first pair of 00 in Replace of these patches to Hex value from below table.

  • e. g. for Ryzen 9 5900X with 12 Cores three modified patches should look like:
    • B8 00 0000 0000 -> B8 0C 0000 0000
    • BA 00 0000 0000 -> BA 0C 0000 0000
    • BA 00 0000 0090 -> BA 0C 0000 0090

Physical CPU cores	Hex value
4 Cores	04
6 Cores	06
8 Cores	08
12 Cores	0C
16 Cores	10

SMBIOS

4. Use this tool to generate your unique SMBIOS info.

• SMBIOS has to be unique, you cannot use one present in this repository.

• Run the tool and select Generate SMBIOS.

• Select the appropriate model for your hardware (e.g. iMac20,1).

• Go to Apple Coverage and paste generated Serial. You need "Invalid Serial" or "Purchase Date not Validated" message. If you get something another you have to generate SMBIOS data and check it again.

• Open config.plist and search for PlatformInfo -> Generic and replace these values:

  • SystemProductName - Model
  • MLB - Board Serial
  • SystemSerialNumber - Serial
  • SystemUUID - SmUUID

• ROM entry should be set to your network card's MAC address, without separators (e. g. :, -).

BIOS Settings

Option	Status
CSM	Disabled
Above 4G Decoding	Enabled
Resizable BAR Support	Disabled
Secure Boot	Disabled
Serial Port	Disabled
Thunderbolt	Disabled