OcAppleKernelLib: Fixed `PowerTimeoutKernelPanic` on macOS 12

closes acidanthera/bugtracker#1673

Changelog.md

@@ -3,6 +3,7 @@ OpenCore Changelog
 #### v0.7.1
 - Added `SyncTableIds` quirk to sync modified table OEM identifiers
 - Added CPU Info (MSRs) dumping to `SysReport`
+- Fixed `PowerTimeoutKernelPanic` on macOS 12
 
 #### v0.7.0
 - Fixed NVRAM reset on firmware with write-protected `BootOptionSupport`

Library/OcAppleKernelLib/CommonPatches.c

@@ -1386,6 +1386,49 @@ mPowerStateTimeoutPanicMasterPatch = {
   .Limit       = 0
 };
 
+STATIC
+UINT8
+mPowerStateTimeoutPanicInlineFind[] = {
+  0x80, 0x00, 0x01, 0x6F,  ///< cmp byte ptr [rax+1], 6Fh ; 'o'
+  0x75, 0x00,              ///< jnz short fail
+  0x80, 0x00, 0x02, 0x6D,  ///< cmp byte ptr [rax+2], 6Dh ; 'm'
+  0x75, 0x00,              ///< jnz short fail
+};
+
+STATIC
+UINT8
+mPowerStateTimeoutPanicInlineMask[] = {
+  0xFF, 0x00, 0xFF, 0xFF,  ///< cmp byte ptr [rax+1], 6Fh ; 'o'
+  0xFF, 0x00,              ///< jnz short fail
+  0xFF, 0x00, 0xFF, 0xFF,  ///< cmp byte ptr [rax+2], 6Dh ; 'm'
+  0xFF, 0x00,              ///< jnz short fail
+};
+
+
+STATIC
+UINT8
+mPowerStateTimeoutPanicInlineReplace[] = {
+  0x80, 0x00, 0x01, 0x6E,  ///< cmp byte ptr [rax+1], 6Fh ; 'n'
+  0x75, 0x00,              ///< jnz short fail
+  0x80, 0x00, 0x02, 0x6D,  ///< cmp byte ptr [rax+2], 6Dh ; 'm'
+  0x75, 0x00,              ///< jnz short fail
+};
+
+STATIC
+PATCHER_GENERIC_PATCH
+mPowerStateTimeoutPanicInlinePatch = {
+  .Comment     = DEBUG_POINTER ("PowerStateTimeout"),
+  .Base        = "__ZN9IOService12ackTimerTickEv",
+  .Find        = mPowerStateTimeoutPanicInlineFind,
+  .Mask        = mPowerStateTimeoutPanicInlineMask,
+  .Replace     = mPowerStateTimeoutPanicInlineReplace,
+  .ReplaceMask = mPowerStateTimeoutPanicInlineMask,
+  .Size        = sizeof (mPowerStateTimeoutPanicInlineFind),
+  .Count       = 1,
+  .Skip        = 0,
+  .Limit       = 0x1000
+};
+
 STATIC
 EFI_STATUS
 PatchPowerStateTimeout (
@@ -1402,6 +1445,14 @@ PatchPowerStateTimeout (
     return EFI_SUCCESS;
   }
 
+  Status = PatcherApplyGenericPatch (Patcher, &mPowerStateTimeoutPanicInlinePatch);
+  if (!EFI_ERROR (Status)) {
+    DEBUG ((DEBUG_INFO, "OCAK: Patch success inline power state\n"));
+    return Status;
+  }
+
+  DEBUG ((DEBUG_INFO, "OCAK: No inline power state patch - %r, trying fallback\n", Status));
+
   Status = PatcherApplyGenericPatch (Patcher, &mPowerStateTimeoutPanicMasterPatch);
   if (EFI_ERROR (Status)) {
     DEBUG ((DEBUG_INFO, "OCAK: Failed to apply power state patch - %r\n", Status));