GECO: OpenCore EFI Generator

Explanation

GECO is a program that allows you to generate and EFI for OpenCore. The purpose of this project is to create the EFI directory to place in the EFI partition of your disk or an USB key. It is mainly an automaton of what is decribed here: https://dortania.github.io/OpenCore-Install-Guide/installer-guide/

The resulting directory will have this structure:

EFI
 |- BOOT
 |    BOOTX64.efi
 |- OC
    |- ACPI
    |- Bootstrap
    |- Drivers
    |- Kexts
    |- Resources
    |- Tools

Reference

Usage

./geco.py --path /path/to/profile

Profile

A profile is a directory containing:

• a YAML file that describes the EFI,
• some SSDTs files to compile,
• some Augeas transformation to apply to the config.plist,
• optionaly a checksum file of the attended result.

YAML file

---
version: "1"

opencore:
  version: "0.6.6"
  variant: "RELEASE"  # RELEASE or DEBUG
  OcBinaryData-ref: "ccf3d0c"  # git reference of https://github.com/acidanthera/OcBinaryData/

kexts:
  - source: "https://github.com/acidanthera/Lilu/releases/download/1.5.3/Lilu-1.5.3-RELEASE.zip"
    files:
      - "Lilu.kext"
  - source: "https://github.com/acidanthera/VirtualSMC/releases/download/1.2.3/VirtualSMC-1.2.3-RELEASE.zip"
    files:
      - "Kexts/VirtualSMC.kext"
      - "Kexts/SMCBatteryManager.kext"
      - "Kexts/SMCProcessor.kext"

SSDTs

This files will be compiled using iasl.

# SSDT/SSDT-PNLF.dsl
DefinitionBlock ("", "SSDT", 2, "X230", "PNLF", 0x00000000)
{
    External (_SB_.PCI0.VID_, DeviceObj)
    External (RMCF.BKLT, IntObj)
    External (RMCF.FBTP, IntObj)
    External (RMCF.GRAN, IntObj)
    External (RMCF.LEVW, IntObj)
    External (RMCF.LMAX, IntObj)

...

}

Tutorials

How-to guides