1 files changed, 22 insertions, 0 deletions
diff --git a/ArmVirtPkg/Include/Guid/Early16550UartBaseAddress.h b/ArmVirtPkg/Include/Guid/Early16550UartBaseAddress.h
new file mode 100644
index 0000000000..6b76f37a27
--- /dev/null
+++ b/ArmVirtPkg/Include/Guid/Early16550UartBaseAddress.h
@@ -0,0 +1,22 @@
+/** @file
+  GUID for the HOB that caches the base address of the 16550 serial port, for
+  when PCD access is not available.
+
+  Copyright (c) 2020, ARM Limited. All rights reserved.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef EARLY_16550_UART_BASE_ADDRESS_H__
+#define EARLY_16550_UART_BASE_ADDRESS_H__
+
+#define EARLY_16550_UART_BASE_ADDRESS_GUID {       \
+  0xea67ca3e, 0x1f54, 0x436b, {                    \
+    0x97, 0x88, 0xd4, 0xeb, 0x29, 0xc3, 0x42, 0x67 \
+    }                                              \
+  }
+
+extern EFI_GUID gEarly16550UartBaseAddressGuid;
+
+#endif // EARLY_16550_UART_BASE_ADDRESS_H__