698f4909b7
This patch updates the copy right information for the below drivers can canps spi trafgen srio uartlite uartns550 gpio llfifo emc and xilkernel bsp. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Acked-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
137 lines
4.8 KiB
C
Executable file
137 lines
4.8 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2002 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/****************************************************************************/
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/**
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*
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* @file xuartlite_selftest.c
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*
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* This file contains the self-test functions for the UART Lite component
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* (XUartLite).
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ---- -------- -----------------------------------------------
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* 1.00a ecm 08/31/01 First release
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* 1.00b jhl 02/21/02 Repartitioned the driver for smaller files
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* 2.00a ktn 10/20/09 Updated to use HAL Processor APIs. The macros have been
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* renamed to remove _m from the name.
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* 3.0 adk 17/12/13 Fixed CR:741186,761863 Reset the FIFO's before reading
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* the status register We don't know the status of the Status
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* Register in case of if there is more than one uartlite IP
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* instance in the h/w design.
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* </pre>
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*
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*****************************************************************************/
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/***************************** Include Files ********************************/
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#include "xil_types.h"
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#include "xil_assert.h"
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#include "xstatus.h"
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#include "xuartlite.h"
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#include "xuartlite_i.h"
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#include "xil_io.h"
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/************************** Constant Definitions ****************************/
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/**************************** Type Definitions ******************************/
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/***************** Macros (Inline Functions) Definitions ********************/
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/************************** Variable Definitions ****************************/
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/************************** Function Prototypes *****************************/
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/****************************************************************************/
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/**
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*
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* Runs a self-test on the device hardware. Since there is no way to perform a
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* loopback in the hardware, this test can only check the state of the status
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* register to verify it is correct. This test assumes that the hardware
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* device is still in its reset state, but has been initialized with the
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* Initialize function.
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*
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* @param InstancePtr is a pointer to the XUartLite instance.
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*
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* @return
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* - XST_SUCCESS if the self-test was successful.
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* - XST_FAILURE if the self-test failed, the status register
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* value was not correct
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*
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* @note None.
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*
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******************************************************************************/
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int XUartLite_SelfTest(XUartLite *InstancePtr)
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{
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u32 StatusRegister;
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/*
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* Assert validates the input arguments
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*/
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Xil_AssertNonvoid(InstancePtr != NULL);
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Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
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/*
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* Reset the FIFO's before reading the status register.
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* It is likely that the Uartlite IP may not always have an
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* empty Tx and Rx FIFO when a selftest is performed if more than one
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* uartlite instance is present in the h/w design.
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*/
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XUartLite_ResetFifos(InstancePtr);
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/*
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* Read the Status register value to check if it is the correct value
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* after a reset
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*/
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StatusRegister = XUartLite_ReadReg(InstancePtr->RegBaseAddress,
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XUL_STATUS_REG_OFFSET);
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/*
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* If the status register is any other value other than
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* XUL_SR_TX_FIFO_EMPTY then the test is a failure since this is
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* the not the value after reset
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*/
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if (StatusRegister != XUL_SR_TX_FIFO_EMPTY) {
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return XST_FAILURE;
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}
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return XST_SUCCESS;
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}
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