blob: 2678d8149d7eaaf8d4e9a81270a9fb02185a53ed [file] [log] [blame]
/******************************************************************************
*
* Copyright (C) 2015 Xilinx, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
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*
* The above copyright notice and this permission notice shall be included in
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******************************************************************************/
/****************************************************************************/
/**
*
* @file xrtcpsu_selftest.c
* @addtogroup rtcpsu_v1_5
* @{
*
* This file contains the self-test functions for the XRtcPsu driver.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ------ -------- -----------------------------------------------
* 1.00 kvn 04/21/15 First release.
* </pre>
*
******************************************************************************/
/***************************** Include Files *********************************/
#include "xstatus.h"
#include "xrtcpsu.h"
/************************** Constant Definitions *****************************/
/**************************** Type Definitions *******************************/
/***************** Macros (Inline Functions) Definitions *********************/
/************************** Variable Definitions *****************************/
/************************** Function Prototypes ******************************/
/****************************************************************************/
/**
*
* This function runs a self-test on the driver and hardware device. This self
* test writes reset value into safety check register and read backs the same.
* If mismatch offers, returns the failure.
*
* @param InstancePtr is a pointer to the XRtcPsu instance
*
* @return
* - XST_SUCCESS if the test was successful
*
* @note
*
* This function can hang if the hardware is not functioning properly.
*
******************************************************************************/
s32 XRtcPsu_SelfTest(XRtcPsu *InstancePtr)
{
s32 Status = XST_SUCCESS;
u32 SafetyCheck;
/* Assert validates the input arguments */
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
/*
* Write the reset value in safety check register and
* try reading back. If mismatch happens, return failure.
*/
XRtcPsu_WriteReg(InstancePtr->RtcConfig.BaseAddr + XRTC_SFTY_CHK_OFFSET,
XRTC_SFTY_CHK_RSTVAL);
SafetyCheck = XRtcPsu_ReadReg(InstancePtr->RtcConfig.BaseAddr +
XRTC_SFTY_CHK_OFFSET);
if (SafetyCheck != XRTC_SFTY_CHK_RSTVAL) {
Status = XST_FAILURE;
}
return Status;
}
/** @} */