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Add universal SSDT-EC

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Mykola Grymalyuk
2020-05-08 11:40:51 -06:00
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Universal/ec-fix.md
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What we'll be doing is creating a fake Embedded Controller (EC) to satisfy macOS Catalina's EC addiction, and disabling the EC on desktops to prevent panics and crashes.
For desktops, you'll want to begin by grabbing either one of these uncompiled SSDT files:
## Quick Fix
* [SSDT-EC-USBX](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples/SSDT-EC-USBX.dsl)
What quick fix refers to is a fancy little SSDT that actually determines what EC needs to be turned off and creates a fake EC. The problem with this SSDT is it has a lot of bloat and can result in extra time in booting, so for this guide we **highly** recommends creating your own SSDT.
For desktops, you can grab either one of these pre-compiled SSDT files:
* [SSDT-EC-USBX-DESKTOP](https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-EC-USBX-DESKTOP.aml)
* For Skylake and newer and all AMD systems
* [SSDT-EC](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples/SSDT-EC.dsl)
* [SSDT-EC-DESKTOP](https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-EC-DESKTOP.aml)
* For Broadwell and older
For laptops, you'll can actually use the pre-builts:
For laptops, you'll can use one of these pre-builts:
* [SSDT-EC-USBX-LAPTOP.aml](https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-EC-USBX-LAPTOP.aml)
* For Skylake and newer
* [SSDT-EC-LAPTOP.aml](https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-EC-LAPTOP.aml)
* For Broadwell and older
With laptops it's a simple as that, all this does is check for an existing `EC__` and if one doesn't appear then create a fake EC to make macOS happy.
## Proper Fix
Desktops however will need to follow below on creating a proper SSDT.
To properly patch your EC, we're gonna need some files:
* [SSDT-EC-USBX](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples/SSDT-EC-USBX.dsl)
* For Skylake and newer and all AMD systems
* [SSDT-EC](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples/SSDT-EC.dsl)
* For Broadwell and older
And with these 2, you can continue below
### Fixing the Path
@@ -64,7 +75,7 @@ If you are having issues finding the Scope, you can use the below Hardware IDs o
**Make sure that you do not rename `Device (EC)`. This is what macOS Catalina looks for to boot!**
**Desktop users, continue down below to disabling your actual EC**
**Desktop users, continue down below to disabling your actual EC. Laptops should not diable their EC**. Laptop users should follow [What happens if no `PNP0C09` show up](#what-happens-if-no-pnp0c09-show-up)
### Disabling real EC (Desktops only)