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69 lines
3.5 KiB
Markdown
69 lines
3.5 KiB
Markdown
# SSDTs: The easy way
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So here we'll be using a super simple tool made by CorpNewt: [SSDTTime](https://github.com/corpnewt/SSDTTime)
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What this tool does is dumps your DSDT from your firmware, and then creates SSDTs based off your DSDT. **This must be done on the target machine running either Windows or Linux**
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## So what **can't** SSDTTime do?:
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* **HEDT SSDTs**:
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* The ACPI is odd on these platforms so manual work is required
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* This includes X79, X99 and X299 systems
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* **Laptop EC fix**:
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* This is because you need to use an ACPI rename over an SSDT on laptops
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* **SSDT-PNLF**:
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* No need to configuration required for most, use prebuilt file [here](https://github.com/khronokernel/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-PNLF.aml)
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* **SSDT-GPI0**:
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* Need to be configured to your system: [SSDT-GPI0.dsl](https://github.com/khronokernel/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-GPI0.dsl)
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* **AWAC and RTC0 SSDTs**:
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* 300 series intel boards will also need to figure his out(Z390 systems are most common for requiring this but some gigabyte Z370 do as well)
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* **PMC SSDT**:
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* For fixing 300 series intel NVRAM
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* **USBX SSDT**:
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* This is included on sample SSDTs but SSDTTime only makes the SSDT-EC part, Skylake and newer users can grab a prebuilt here: [SSDT-USBX.aml](https://github.com/khronokernel/Opencore-Vanilla-Desktop-Guide/blob/master/extra-files/SSDT-USBX.aml)
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For users who don't have all the options avaible to them in SSDTTime, you can follow the "SSDTs: The long way" section. You can still use SSDTTime for SSDTs it support for you.
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## Running SSDTTime
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Run the `SSDTTime.bat` file as Admin on the target machine and you should see something like this:
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What are all these options?:
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* `1. FixHPET - Patch out IRQ Conflicts`
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* IRQ patching, mainly needed for X79, X99 and laptop users
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* `2. FakeEC - OS-aware Fake EC`
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* This is the SSDT-EC, required for Catalina users
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* `3. PluginType - Sets plugin-type = 1 on CPU0/PR00`
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* This is the SSDT-PLUG, for Intel only
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* `4. Dump DSDT - Automatically dump the system DSDT`
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* Dumps your DSDT from your firmware
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What we want to do is select option `4. Dump DSDT` first, then select the appropriate option(s) for your system.
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> What about USBX?
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For Skylake+ and AMD, you can grab a prebuilt file here: [SSDT-USBX.aml](https://github.com/khronokernel/Opencore-Vanilla-Desktop-Guide/blob/master/extra-files/SSDT-USBX.aml). This file is plug and play and requires no device configuration, **do not use on Broadwell and older**.
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**Troubleshooting note**: See [General Troubleshooting](https://khronokernel.github.io/Opencore-Vanilla-Desktop-Guide/troubleshooting/troubleshooting.html) if you're having issues running SSDTTime
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## Adding to OpenCore
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Don't forget that SSDTs need to be added to Opencore, eminder that .aml is complied, .dsl is code. **Add only the .aml file**:
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* EFI/OC/ACPI
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* config.plist -> ACPI -> Add
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Reminder that Cmd/Crtl+R with ProperTree pointed at your OC folder will add all your SSDTs, kexts and .efi drivers to the config for you. **Do not add your DSDT to OpenCore, its already in your firmware**
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Users of `FixHPET` will also need to merge oc_patches.plist into their config.plist
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Steps to do this:
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* Open both files,
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* Delete the `ACPI -> Patch` section from config.plist
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* Copy the `ACPI -> Patch` section from patches.plist
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* Paste into where old patches were in config.plist
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