diff options
Diffstat (limited to 'FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo_bsp/ps7_cortexa9_0/libsrc/scutimer_v2_0/src/xscutimer_selftest.c')
-rw-r--r-- | FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo_bsp/ps7_cortexa9_0/libsrc/scutimer_v2_0/src/xscutimer_selftest.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo_bsp/ps7_cortexa9_0/libsrc/scutimer_v2_0/src/xscutimer_selftest.c b/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo_bsp/ps7_cortexa9_0/libsrc/scutimer_v2_0/src/xscutimer_selftest.c new file mode 100644 index 000000000..8aedc2295 --- /dev/null +++ b/FreeRTOS/Demo/CORTEX_A9_Zynq_ZC702/RTOSDemo_bsp/ps7_cortexa9_0/libsrc/scutimer_v2_0/src/xscutimer_selftest.c @@ -0,0 +1,140 @@ +/****************************************************************************** +* +* (c) Copyright 2010-12 Xilinx, Inc. All rights reserved. +* +* This file contains confidential and proprietary information of Xilinx, Inc. +* and is protected under U.S. and international copyright and other +* intellectual property laws. +* +* DISCLAIMER +* This disclaimer is not a license and does not grant any rights to the +* materials distributed herewith. Except as otherwise provided in a valid +* license issued to you by Xilinx, and to the maximum extent permitted by +* applicable law: (1) THESE MATERIALS ARE MADE AVAILABLE "AS IS" AND WITH ALL +* FAULTS, AND XILINX HEREBY DISCLAIMS ALL WARRANTIES AND CONDITIONS, EXPRESS, +* IMPLIED, OR STATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF +* MERCHANTABILITY, NON-INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; +* and (2) Xilinx shall not be liable (whether in contract or tort, including +* negligence, or under any other theory of liability) for any loss or damage +* of any kind or nature related to, arising under or in connection with these +* materials, including for any direct, or any indirect, special, incidental, +* or consequential loss or damage (including loss of data, profits, goodwill, +* or any type of loss or damage suffered as a result of any action brought by +* a third party) even if such damage or loss was reasonably foreseeable or +* Xilinx had been advised of the possibility of the same. +* +* CRITICAL APPLICATIONS +* Xilinx products are not designed or intended to be fail-safe, or for use in +* any application requiring fail-safe performance, such as life-support or +* safety devices or systems, Class III medical devices, nuclear facilities, +* applications related to the deployment of airbags, or any other applications +* that could lead to death, personal injury, or severe property or +* environmental damage (individually and collectively, "Critical +* Applications"). Customer assumes the sole risk and liability of any use of +* Xilinx products in Critical Applications, subject only to applicable laws +* and regulations governing limitations on product liability. +* +* THIS COPYRIGHT NOTICE AND DISCLAIMER MUST BE RETAINED AS PART OF THIS FILE +* AT ALL TIMES. +* +******************************************************************************/ +/****************************************************************************/ +/** +* +* @file xscutimer_selftest.c +* +* Contains diagnostic self-test functions for the XScuTimer driver. +* +* <pre> +* MODIFICATION HISTORY: +* +* Ver Who Date Changes +* ----- --- -------- --------------------------------------------- +* 1.00a nm 03/10/10 First release +* </pre> +* +******************************************************************************/ + +/***************************** Include Files *********************************/ + +#include "xscutimer.h" + +/************************** Constant Definitions *****************************/ + +#define XSCUTIMER_SELFTEST_VALUE 0xA55AF00F + +/**************************** Type Definitions *******************************/ + +/***************** Macros (Inline Functions) Definitions *********************/ + +/************************** Function Prototypes ******************************/ + +/************************** Variable Definitions *****************************/ + +/****************************************************************************/ +/** +* +* Run a self-test on the timer. This test clears the timer enable bit in +* the control register, writes to the timer load register and verifies the +* value read back matches the value written and restores the control register +* and the timer load register. +* +* @param InstancePtr is a pointer to the XScuTimer instance. +* +* @return +* - XST_SUCCESS if self-test was successful. +* - XST_FAILURE if self test was not successful. +* +* @note None. +* +******************************************************************************/ +int XScuTimer_SelfTest(XScuTimer *InstancePtr) +{ + u32 Register; + u32 CtrlOrig; + u32 LoadOrig; + + /* + * Assert to ensure the inputs are valid and the instance has been + * initialized. + */ + Xil_AssertNonvoid(InstancePtr != NULL); + Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY); + + /* + * Save the contents of the Control Register and stop the timer. + */ + CtrlOrig = XScuTimer_ReadReg(InstancePtr->Config.BaseAddr, + XSCUTIMER_CONTROL_OFFSET); + Register = CtrlOrig & ~XSCUTIMER_CONTROL_ENABLE_MASK; + XScuTimer_WriteReg(InstancePtr->Config.BaseAddr, + XSCUTIMER_CONTROL_OFFSET, Register); + + /* + * Save the contents of the Load Register. + * Load a new test value in the Load Register, read it back and + * compare it with the written value. + */ + LoadOrig = XScuTimer_ReadReg((InstancePtr)->Config.BaseAddr, + XSCUTIMER_LOAD_OFFSET); + XScuTimer_LoadTimer(InstancePtr, XSCUTIMER_SELFTEST_VALUE); + Register = XScuTimer_ReadReg((InstancePtr)->Config.BaseAddr, + XSCUTIMER_LOAD_OFFSET); + + /* + * Restore the contents of the Load Register and Control Register. + */ + XScuTimer_LoadTimer(InstancePtr, LoadOrig); + XScuTimer_WriteReg(InstancePtr->Config.BaseAddr, + XSCUTIMER_CONTROL_OFFSET, CtrlOrig); + + /* + * Return a Failure if the contents of the Load Register do not + * match with the value written to it. + */ + if (Register != XSCUTIMER_SELFTEST_VALUE) { + return XST_FAILURE; + } + + return XST_SUCCESS; +} |