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32 /****************************************************************************/
35 * @file xrtcpsu_selftest.c
36 * @addtogroup rtcpsu_v1_0
39 * This file contains the self-test functions for the XRtcPsu driver.
42 * MODIFICATION HISTORY:
44 * Ver Who Date Changes
45 * ----- ------ -------- -----------------------------------------------
46 * 1.00 kvn 04/21/15 First release.
49 ******************************************************************************/
51 /***************************** Include Files *********************************/
56 /************************** Constant Definitions *****************************/
59 /**************************** Type Definitions *******************************/
62 /***************** Macros (Inline Functions) Definitions *********************/
65 /************************** Variable Definitions *****************************/
68 /************************** Function Prototypes ******************************/
71 /****************************************************************************/
74 * This function runs a self-test on the driver and hardware device. This self
75 * test writes reset value into safety check register and read backs the same.
76 * If mismatch offers, returns the failure.
78 * @param InstancePtr is a pointer to the XRtcPsu instance
81 * - XST_SUCCESS if the test was successful
85 * This function can hang if the hardware is not functioning properly.
87 ******************************************************************************/
88 s32 XRtcPsu_SelfTest(XRtcPsu *InstancePtr)
90 s32 Status = XST_SUCCESS;
93 /* Assert validates the input arguments */
94 Xil_AssertNonvoid(InstancePtr != NULL);
95 Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
98 * Write the reset value in safety check register and
99 * try reading back. If mismatch happens, return failure.
101 XRtcPsu_WriteReg(InstancePtr->RtcConfig.BaseAddr + XRTC_SFTY_CHK_OFFSET,
102 XRTC_SFTY_CHK_RSTVAL);
103 SafetyCheck = XRtcPsu_ReadReg(InstancePtr->RtcConfig.BaseAddr +
104 XRTC_SFTY_CHK_OFFSET);
106 if (SafetyCheck != XRTC_SFTY_CHK_RSTVAL) {
107 Status = XST_FAILURE;