1 files changed, 39 insertions, 0 deletions
diff --git a/ArmVirtPkg/Library/DebugLibFdtPL011Uart/Write.h b/ArmVirtPkg/Library/DebugLibFdtPL011Uart/Write.h
new file mode 100644
index 0000000000..2cf6106764
--- /dev/null
+++ b/ArmVirtPkg/Library/DebugLibFdtPL011Uart/Write.h
@@ -0,0 +1,39 @@
+/** @file
+  Declare DebugLibFdtPL011UartWrite(), for abstracting PL011 UART initialization
+  differences between flash- vs. RAM-based modules.
+
+  Copyright (C) Red Hat
+  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2012 - 2014, ARM Ltd. All rights reserved.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#ifndef DEBUG_LIB_FDT_PL011_UART_WRITE_H_
+#define DEBUG_LIB_FDT_PL011_UART_WRITE_H_
+
+/**
+  (Copied from SerialPortWrite() in "MdePkg/Include/Library/SerialPortLib.h" at
+  commit c4547aefb3d0, with the Buffer non-nullity assertion removed:)
+
+  Write data from buffer to serial device.
+
+  Writes NumberOfBytes data bytes from Buffer to the serial device.
+  The number of bytes actually written to the serial device is returned.
+  If the return value is less than NumberOfBytes, then the write operation failed.
+  If NumberOfBytes is zero, then return 0.
+
+  @param  Buffer           Pointer to the data buffer to be written.
+  @param  NumberOfBytes    Number of bytes to written to the serial device.
+
+  @retval 0                NumberOfBytes is 0.
+  @retval >0               The number of bytes written to the serial device.
+                           If this value is less than NumberOfBytes, then the write operation failed.
+**/
+UINTN
+DebugLibFdtPL011UartWrite (
+  IN UINT8  *Buffer,
+  IN UINTN  NumberOfBytes
+  );
+
+#endif