From e3a2003995ac1b9d52a597e2bcb453ae46598f95 Mon Sep 17 00:00:00 2001
From: jief666 <jief@666>
Date: Tue, 2 Jan 2024 19:55:44 +0100
Subject: [PATCH] Add dummy GetSerialRegisterBase() in BaseSerialPortLibNull.c.

---
 .../BaseSerialPortLibNull.c                    | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.c b/MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.c
index 4f70827f1..51ed98c77 100644
--- a/MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.c
+++ b/MdePkg/Library/BaseSerialPortLibNull/BaseSerialPortLibNull.c
@@ -189,3 +189,21 @@ SerialPortSetAttributes (
   return RETURN_UNSUPPORTED;
 }
 
+
+/**
+  Retrieve the I/O or MMIO base address register for the PCI UART device.
+
+  This function assumes Root Bus Numer is Zero, and enables I/O and MMIO in PCI UART
+  Device if they are not already enabled.
+
+  @return  The base address register of the UART device.
+
+**/
+UINTN
+GetSerialRegisterBase (
+  VOID
+  )
+{
+  return 0;
+}
+