ResetSystemLib: Fix Cold Reset

The ColdReset was actually doing a WarmReset. Hardcode the correct settings for Cold and Warm reset instead of using some wrong defined value from FADT. Signed-off-by: Patrick Rudolph <[email protected]>
9elements · Jun 14, 2024 · 06f1483 · 06f1483
1 parent 37b4fdc
commit 06f1483
Showing 1 changed file with 10 additions and 2 deletions.
diff --git a/UefiPayloadPkg/Library/ResetSystemLib/ResetSystemLib.c b/UefiPayloadPkg/Library/ResetSystemLib/ResetSystemLib.c
@@ -58,7 +58,11 @@ ResetCold (
   VOID
   )
 {
-  IoWrite8 ((UINTN)mAcpiBoardInfo.ResetRegAddress, mAcpiBoardInfo.ResetValue);
+  if ((UINTN)mAcpiBoardInfo.ResetRegAddress == 0xcf9) {
+    IoWrite8 (0xcf9, 0xe);
+  } else {
+    IoWrite8 ((UINTN)mAcpiBoardInfo.ResetRegAddress, mAcpiBoardInfo.ResetValue);
+  }
   CpuDeadLoop ();
 }
 
@@ -75,7 +79,11 @@ ResetWarm (
   VOID
   )
 {
-  IoWrite8 ((UINTN)mAcpiBoardInfo.ResetRegAddress, mAcpiBoardInfo.ResetValue);
+  if ((UINTN)mAcpiBoardInfo.ResetRegAddress == 0xcf9) {
+    IoWrite8 (0xcf9, 0x6);
+  } else {
+    IoWrite8 ((UINTN)mAcpiBoardInfo.ResetRegAddress, mAcpiBoardInfo.ResetValue);
+  }
   CpuDeadLoop ();
 }