Add NVRAM module

mayankk2308 · Jun 20, 2021 · 35a5969 · 35a5969
1 parent b79a987
commit 35a5969
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diff --git a/Installer/installer.sh b/Installer/installer.sh
@@ -6,6 +6,7 @@
 source "opencore.sh" 
 source "resources.sh"
 source "requirements.sh"
+source "nvram.sh"
 
 version="1.0.0"
 

diff --git a/Installer/nvram.sh b/Installer/nvram.sh
@@ -0,0 +1,26 @@
+#!/bin/bash
+
+# nvram.sh
+# Manipulate NVRAM variables.
+
+source "tools.sh"
+
+power_prefs="FA4CE28D-B62F-4C99-9CC3-6815686E30F9:gpu-power-prefs"
+
+# Set mux.
+nvram_mux() {
+  local val="${1}"
+
+  nvram "${power_prefs}=${val}"
+  exit_if_failed "Unable to set mux."
+}
+
+# Set mux to integrated GPU.
+nvram_muxigpu() {
+  nvram_mux "%01%00%00%00"
+}
+
+# Set mux to discrete GPU.
+nvram_muxdgpu() {
+  nvram_mux "%00%00%00%00"
+}