arm: add uart echo app

arm/hal/lib/common/clocking/xil_clocking.c

@@ -0,0 +1,128 @@
+/******************************************************************************
+* Copyright (c) 2020 Xilinx, Inc.  All rights reserved.
+* SPDX-License-Identifier: MIT
+******************************************************************************/
+
+/*****************************************************************************/
+/**
+*
+* @file xil_clocking.c
+*
+* The xil_clocking.c file contains clocking related functions and macros.
+*
+* @{
+* <pre>
+* MODIFICATION HISTORY:
+*
+* Ver   Who    Date   Changes
+* ----- ---- -------- -------------------------------------------------------
+* 7.2 sd  02/06/20 First release of clocking
+* 7.2 sd  03/20/20 Added checking for isolation case
+* </pre>
+*
+******************************************************************************/
+
+#include "xil_clocking.h"
+/************************** Variable Definitions *****************************/
+
+#if defined  (XPAR_XCRPSU_0_DEVICE_ID) && defined (XCLOCKING)
+
+XClock ClockInstance;		/* Instance of clock Controller */
+XClockPs_Config *ConfigPtr;
+
+
+XStatus Xil_ClockInit(void)
+{
+	XStatus Status = XST_FAILURE;
+
+	/* Lookup clock configurations */
+	ConfigPtr = XClock_LookupConfig(XPAR_XCLOCKPS_DEVICE_ID);
+
+	/* Initialize the Clock controller driver */
+	Status = XClock_CfgInitialize(&ClockInstance, ConfigPtr);
+	return Status;
+}
+
+XStatus Xil_ClockEnable(XClock_OutputClks ClockId)
+{
+
+	XStatus Status = XST_FAILURE;
+
+	Status = XClock_EnableClock(ClockId);
+	return Status;
+}
+
+XStatus Xil_ClockDisable(XClock_OutputClks ClockId)
+{
+	XStatus Status = XST_FAILURE;
+
+	Status = XClock_DisableClock(ClockId);
+	return Status;
+}
+
+XStatus Xil_ClockGetRate(XClock_OutputClks ClockId, XClockRate *Rate)
+{
+	XStatus Status = XST_FAILURE;
+
+	Xil_AssertNonvoid(Rate != NULL);
+
+	Status = XClock_GetRate(ClockId, Rate);
+	if (XST_SUCCESS == Status) {
+		xdbg_printf(XDBG_DEBUG_GENERAL, "Operating rate =  %lx\n",*Rate);
+	} else {
+		xdbg_printf(XDBG_DEBUG_ERROR, "Failed: Fetching rate\r\n");
+	}
+	return Status;
+}
+
+XStatus Xil_ClockSetRate(XClock_OutputClks ClockId, XClockRate Rate,
+							XClockRate *SetRate)
+{
+	XStatus Status = XST_FAILURE;
+
+	Xil_AssertNonvoid(SetRate != NULL);
+
+	if (Rate == 0) {
+		return XST_FAILURE;
+	}
+	Status = XClock_SetRate(ClockId, Rate, SetRate);
+	if (XST_SUCCESS != Status) {
+		xdbg_printf(XDBG_DEBUG_ERROR, "Failed Setting rate\n");
+	}
+	return Status;
+}
+
+#else
+XStatus Xil_ClockGetRate(XClock_OutputClks ClockId, XClockRate *Rate)
+{
+	(void) ClockId;
+	(void) Rate;
+	return XST_FAILURE;
+}
+
+XStatus Xil_ClockSetRate(XClock_OutputClks ClockId, XClockRate Rate,
+							XClockRate *SetRate) {
+	(void) ClockId;
+	(void) Rate;
+	(void) SetRate;
+	return XST_FAILURE;
+}
+
+XStatus Xil_ClockInit(void)
+{
+	return XST_SUCCESS;
+}
+
+XStatus Xil_ClockEnable(XClock_OutputClks ClockId)
+{
+	(void) ClockId;
+	return XST_SUCCESS;
+}
+
+XStatus Xil_ClockDisable(XClock_OutputClks ClockId)
+{
+	(void) ClockId;
+	return XST_SUCCESS;
+}
+
+#endif /* XCLOCKING */