From 4cc7ac246d99ee3033a651cb7587ec39b6ad13b7 Mon Sep 17 00:00:00 2001
From: PMheart <17109513+PMheart@users.noreply.github.com>
Date: Mon, 5 Jun 2023 22:32:13 +0200
Subject: [PATCH] OcAppleKernelLib: Fixed `AppleXcpmForceBoost` on macOS 14

---
 Changelog.md                             |  1 +
 Library/OcAppleKernelLib/CommonPatches.c | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/Changelog.md b/Changelog.md
index f5d61629..0588e482 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -12,6 +12,7 @@ OpenCore Changelog
 - Added optional `--enable-mouse-click` argument to `CrScreenshotDxe` driver to additionally respond on mouse click
 - Added `--use-conn-none` option to `AudioDxe` driver to discover additional usable output channels on some systems
 - Added `PciIo` protocol override used to fix Aptio IV compatiblity with Above 4G BARs, thx @xCuri0
+- Fixed `AppleXcpmForceBoost` quirk on macOS 14
 
 #### v0.9.2
 - Added `DisableIoMapperMapping` quirk, thx @CaseySJ
diff --git a/Library/OcAppleKernelLib/CommonPatches.c b/Library/OcAppleKernelLib/CommonPatches.c
index 48eedbae..19850dc2 100644
--- a/Library/OcAppleKernelLib/CommonPatches.c
+++ b/Library/OcAppleKernelLib/CommonPatches.c
@@ -488,6 +488,14 @@ CONST UINT8
   0x0F, 0x30                    ///< wrmsr
 };
 
+STATIC
+CONST UINT8
+  mPerfCtrlFind4[] = {
+  0xB9, 0x99, 0x01, 0x00, 0x00, ///< mov ecx, 0x199
+  0x48, 0x89, 0xD8,             ///< mov rax, rbx
+  0x0F, 0x30                    ///< wrmsr
+};
+
 STATIC
 CONST UINT8
   mPerfCtrlMax[] = {
@@ -538,7 +546,8 @@ PatchAppleXcpmForceBoost (
     {
       if (  (CompareMem (&Current[4], &mPerfCtrlFind1[4], sizeof (mPerfCtrlFind1) - 4) == 0)
          || (CompareMem (&Current[4], &mPerfCtrlFind2[4], sizeof (mPerfCtrlFind2) - 4) == 0)
-         || (CompareMem (&Current[4], &mPerfCtrlFind3[4], sizeof (mPerfCtrlFind3) - 4) == 0))
+         || (CompareMem (&Current[4], &mPerfCtrlFind3[4], sizeof (mPerfCtrlFind3) - 4) == 0)
+         || (CompareMem (&Current[4], &mPerfCtrlFind4[4], sizeof (mPerfCtrlFind4) - 4) == 0))
       {
         break;
       }
-- 
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