arm: add uart echo app

arm/hal/lib/common/xil_testio.h

@@ -0,0 +1,76 @@
+/******************************************************************************
+* Copyright (c) 2009 - 2021 Xilinx, Inc.  All rights reserved.
+* SPDX-License-Identifier: MIT
+******************************************************************************/
+
+/*****************************************************************************/
+/**
+*
+* @file xil_testio.h
+*
+* @addtogroup common_test_utils Test Utilities for Memory and Caches
+* <h2>I/O test </h2>
+* The xil_testio.h file contains utility functions to test endian related memory
+* IO functions.
+*
+* A subset of the memory tests can be selected or all of the tests can be run
+* in order. If there is an error detected by a subtest, the test stops and the
+* failure code is returned. Further tests are not run even if all of the tests
+* are selected.
+*
+* @{
+* <pre>
+* MODIFICATION HISTORY:
+*
+* Ver    Who    Date    Changes
+* ----- ---- -------- -----------------------------------------------
+* 1.00 hbm  08/05/09 First release
+* </pre>
+*
+******************************************************************************/
+
+/**
+ *@cond nocomments
+ */
+
+#ifndef XIL_TESTIO_H	/* prevent circular inclusions */
+#define XIL_TESTIO_H	/* by using protection macros */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/***************************** Include Files *********************************/
+#include "xil_types.h"
+
+/************************** Constant Definitions *****************************/
+
+
+#define XIL_TESTIO_DEFAULT 	0
+#define XIL_TESTIO_LE		1
+#define XIL_TESTIO_BE		2
+
+/**
+ *@endcond
+ */
+
+/**************************** Type Definitions *******************************/
+
+
+/***************** Macros (Inline Functions) Definitions *********************/
+
+
+/************************** Function Prototypes ******************************/
+
+extern s32 Xil_TestIO8(u8 *Addr, s32 Length, u8 Value);
+extern s32 Xil_TestIO16(u16 *Addr, s32 Length, u16 Value, s32 Kind, s32 Swap);
+extern s32 Xil_TestIO32(u32 *Addr, s32 Length, u32 Value, s32 Kind, s32 Swap);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of protection macro */
+/**
+* @} End of "addtogroup common_test_utils".
+*/