Set PcdSerialClockRate from SerialPortInfo in UefiPayloadEntry

Signed-off-by: Matt DeVillier <[email protected]>
tianocore · Sep 20, 2024 · c358009 · c358009
1 parent 3a3b12c
commit c358009
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diff --git a/UefiPayloadPkg/UefiPayloadEntry/UefiPayloadEntry.c b/UefiPayloadPkg/UefiPayloadEntry/UefiPayloadEntry.c
@@ -432,6 +432,14 @@ _ModuleEntryPoint (
     UniversalSerialPort->RegisterBase    = SerialPortInfo.BaseAddr;
     UniversalSerialPort->BaudRate        = SerialPortInfo.Baud;
     UniversalSerialPort->RegisterStride  = (UINT8)SerialPortInfo.RegWidth;
+    // Set PCD here (vs in PlatformHookLib.c) to avoid adding a new field to UniversalSerialPort struct
+    if (SerialPortInfo.InputHertz > 0) {
+      Status = PcdSet32S (PcdSerialClockRate, SerialPortInfo.InputHertz);
+      if (RETURN_ERROR (Status)) {
+        DEBUG ((DEBUG_ERROR, "Failed to set PcdSerialClockRate; Status = %r\n", Status));
+        return Status;
+      }
+    }
   }
 
   // The library constructors might depend on serial port, so call it after serial port hob

diff --git a/UefiPayloadPkg/UefiPayloadEntry/UefiPayloadEntry.inf b/UefiPayloadPkg/UefiPayloadEntry/UefiPayloadEntry.inf
@@ -96,3 +96,4 @@
   gEfiMdeModulePkgTokenSpaceGuid.PcdDxeNxMemoryProtectionPolicy ## SOMETIMES_CONSUMES
   gEfiMdeModulePkgTokenSpaceGuid.PcdImageProtectionPolicy       ## SOMETIMES_CONSUMES
 
+  gEfiMdeModulePkgTokenSpaceGuid.PcdSerialClockRate             ## PRODUCES